diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bc182a087..ccea9484a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -111,10 +111,13 @@ jobs:
         run: |
           VERSION=$(cat src/adcp/ADCP_VERSION)
           echo "ADCP_VERSION=$VERSION"
-          # Check if version contains pre-release identifiers (alpha, beta, rc)
-          if echo "$VERSION" | grep -qE '(alpha|beta|rc)'; then
+          # Skip regeneration + drift check for pre-release tags (alpha/beta/rc)
+          # and for `latest`, which is a moving dev snapshot — the committed
+          # generated types are frozen against the bundle we last synced, and
+          # CI's fresh sync against today's `latest.tgz` is expected to drift.
+          if echo "$VERSION" | grep -qE '(alpha|beta|rc)' || [ "$VERSION" = "latest" ]; then
             echo "is_prerelease=true" >> $GITHUB_OUTPUT
-            echo "Pre-release version detected - will skip schema sync (may not be publicly accessible)"
+            echo "Pre-release / latest version detected - will skip schema sync"
           else
             echo "is_prerelease=false" >> $GITHUB_OUTPUT
             echo "Stable version - will sync schemas from upstream"
diff --git a/pyproject.toml b/pyproject.toml
index 9ba628fd5..2346660f2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "3.12.0"
+version = "4.0.0b1"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}
@@ -14,7 +14,7 @@ requires-python = ">=3.10"
 license = {text = "Apache-2.0"}
 keywords = ["adcp", "mcp", "a2a", "protocol", "advertising"]
 classifiers = [
-    "Development Status :: 3 - Alpha",
+    "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "License :: OSI Approved :: Apache Software License",
     "Programming Language :: Python :: 3",
@@ -45,7 +45,10 @@ dev = [
     "mypy>=1.0.0",
     "black>=23.0.0",
     "ruff>=0.1.0",
-    "datamodel-code-generator[http]>=0.35.0",
+    # Pin to exact version: codegen's variant numbering (e.g. CreateMediaBuyResponse1 vs
+    # CreateMediaBuyResponse) shifts between versions, producing diff churn and breaking
+    # generated-code imports that reference specific suffixes.
+    "datamodel-code-generator[http]==0.56.1",
 ]
 docs = [
     "pdoc3>=0.10.0",
@@ -150,6 +153,6 @@ skips = ["B101"]  # Allow assert in code (we're not using -O optimization)
 
 [dependency-groups]
 dev = [
-    "datamodel-code-generator>=0.35.0",
+    "datamodel-code-generator==0.56.1",
     "pre-commit>=4.4.0",
 ]
diff --git a/schemas/cache/.hashes.json b/schemas/cache/.hashes.json
deleted file mode 100644
index 7985b9c9a..000000000
--- a/schemas/cache/.hashes.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "https://adcontextprotocol.org/schemas/latest/index.json": "2dfc2ef682b77180b0c9edb67f406bede432fd20f1980019af06a97159859ff1"
-}
\ No newline at end of file
diff --git a/schemas/cache/a2ui/bound-value.json b/schemas/cache/a2ui/bound-value.json
new file mode 100644
index 000000000..94490eaad
--- /dev/null
+++ b/schemas/cache/a2ui/bound-value.json
@@ -0,0 +1,80 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "A2UI Bound Value",
+  "description": "A value that can be a literal or bound to a path in the data model",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Literal string value",
+      "properties": {
+        "literalString": {
+          "type": "string",
+          "description": "Static string value"
+        }
+      },
+      "required": [
+        "literalString"
+      ],
+      "additionalProperties": false
+    },
+    {
+      "type": "object",
+      "description": "Literal number value",
+      "properties": {
+        "literalNumber": {
+          "type": "number",
+          "description": "Static number value"
+        }
+      },
+      "required": [
+        "literalNumber"
+      ],
+      "additionalProperties": false
+    },
+    {
+      "type": "object",
+      "description": "Literal boolean value",
+      "properties": {
+        "literalBoolean": {
+          "type": "boolean",
+          "description": "Static boolean value"
+        }
+      },
+      "required": [
+        "literalBoolean"
+      ],
+      "additionalProperties": false
+    },
+    {
+      "type": "object",
+      "description": "Path to data model value",
+      "properties": {
+        "path": {
+          "type": "string",
+          "description": "JSON pointer path to value in data model (e.g., '/products/0/title')"
+        }
+      },
+      "required": [
+        "path"
+      ],
+      "additionalProperties": false
+    },
+    {
+      "type": "object",
+      "description": "Literal with path binding (sets default and binds)",
+      "properties": {
+        "literalString": {
+          "type": "string"
+        },
+        "path": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "literalString",
+        "path"
+      ],
+      "additionalProperties": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/a2ui/si-catalog.json b/schemas/cache/a2ui/si-catalog.json
new file mode 100644
index 000000000..9596f806a
--- /dev/null
+++ b/schemas/cache/a2ui/si-catalog.json
@@ -0,0 +1,426 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Component Catalog",
+  "description": "A2UI component catalog for Sponsored Intelligence",
+  "definitions": {
+    "Text": {
+      "type": "object",
+      "description": "Text display component",
+      "properties": {
+        "text": {
+          "$ref": "bound-value.json",
+          "description": "Text content to display"
+        },
+        "variant": {
+          "type": "string",
+          "enum": [
+            "body",
+            "heading",
+            "caption",
+            "label"
+          ],
+          "default": "body"
+        }
+      },
+      "required": [
+        "text"
+      ]
+    },
+    "Button": {
+      "type": "object",
+      "description": "Interactive button component",
+      "properties": {
+        "label": {
+          "$ref": "bound-value.json",
+          "description": "Button label text"
+        },
+        "action": {
+          "type": "object",
+          "description": "Action to trigger on click",
+          "properties": {
+            "name": {
+              "type": "string",
+              "description": "Action identifier"
+            },
+            "context": {
+              "type": "object",
+              "description": "Context data to include with action",
+              "additionalProperties": {
+                "$ref": "bound-value.json"
+              }
+            }
+          },
+          "required": [
+            "name"
+          ]
+        },
+        "variant": {
+          "type": "string",
+          "enum": [
+            "primary",
+            "secondary",
+            "text"
+          ],
+          "default": "primary"
+        },
+        "disabled": {
+          "$ref": "bound-value.json"
+        }
+      },
+      "required": [
+        "label",
+        "action"
+      ]
+    },
+    "Link": {
+      "type": "object",
+      "description": "Hyperlink component",
+      "properties": {
+        "label": {
+          "$ref": "bound-value.json",
+          "description": "Link text"
+        },
+        "url": {
+          "$ref": "bound-value.json",
+          "description": "URL to navigate to"
+        },
+        "external": {
+          "type": "boolean",
+          "description": "Opens in new tab if true",
+          "default": true
+        }
+      },
+      "required": [
+        "label",
+        "url"
+      ]
+    },
+    "Image": {
+      "type": "object",
+      "description": "Image display component",
+      "properties": {
+        "src": {
+          "$ref": "bound-value.json",
+          "description": "Image source URL"
+        },
+        "alt": {
+          "$ref": "bound-value.json",
+          "description": "Alt text for accessibility"
+        },
+        "width": {
+          "type": "integer",
+          "description": "Image width in pixels"
+        },
+        "height": {
+          "type": "integer",
+          "description": "Image height in pixels"
+        }
+      },
+      "required": [
+        "src",
+        "alt"
+      ]
+    },
+    "Card": {
+      "type": "object",
+      "description": "Card container for grouped content",
+      "properties": {
+        "title": {
+          "$ref": "bound-value.json",
+          "description": "Card title"
+        },
+        "subtitle": {
+          "$ref": "bound-value.json",
+          "description": "Card subtitle"
+        },
+        "image": {
+          "$ref": "bound-value.json",
+          "description": "Card image URL"
+        },
+        "badge": {
+          "$ref": "bound-value.json",
+          "description": "Badge text (e.g., 'New', 'Sale')"
+        },
+        "action": {
+          "type": "object",
+          "description": "Action to trigger on card click",
+          "properties": {
+            "name": {
+              "type": "string"
+            },
+            "context": {
+              "type": "object",
+              "additionalProperties": {
+                "$ref": "bound-value.json"
+              }
+            }
+          },
+          "required": [
+            "name"
+          ]
+        },
+        "children": {
+          "type": "array",
+          "description": "Child component IDs",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "required": [
+        "title"
+      ]
+    },
+    "ProductCard": {
+      "type": "object",
+      "description": "Product display card (SI-specific)",
+      "properties": {
+        "title": {
+          "$ref": "bound-value.json",
+          "description": "Product name"
+        },
+        "price": {
+          "$ref": "bound-value.json",
+          "description": "Price display string"
+        },
+        "image": {
+          "$ref": "bound-value.json",
+          "description": "Product image URL"
+        },
+        "description": {
+          "$ref": "bound-value.json",
+          "description": "Product description"
+        },
+        "badge": {
+          "$ref": "bound-value.json",
+          "description": "Badge text (e.g., 'Best Seller')"
+        },
+        "ctaLabel": {
+          "$ref": "bound-value.json",
+          "description": "CTA button label"
+        },
+        "action": {
+          "type": "object",
+          "properties": {
+            "name": {
+              "type": "string"
+            },
+            "context": {
+              "type": "object",
+              "additionalProperties": {
+                "$ref": "bound-value.json"
+              }
+            }
+          },
+          "required": [
+            "name"
+          ]
+        }
+      },
+      "required": [
+        "title",
+        "price"
+      ]
+    },
+    "List": {
+      "type": "object",
+      "description": "Data-bound list component",
+      "properties": {
+        "items": {
+          "$ref": "bound-value.json",
+          "description": "Path to array in data model"
+        },
+        "template": {
+          "type": "object",
+          "description": "Template for list items",
+          "properties": {
+            "componentId": {
+              "type": "string",
+              "description": "ID of component to use as template"
+            }
+          },
+          "required": [
+            "componentId"
+          ]
+        },
+        "emptyMessage": {
+          "$ref": "bound-value.json",
+          "description": "Message to show when list is empty"
+        },
+        "layout": {
+          "type": "string",
+          "enum": [
+            "vertical",
+            "horizontal",
+            "grid"
+          ],
+          "default": "vertical"
+        }
+      },
+      "required": [
+        "items",
+        "template"
+      ]
+    },
+    "Row": {
+      "type": "object",
+      "description": "Horizontal layout container",
+      "properties": {
+        "children": {
+          "type": "array",
+          "description": "Child component IDs",
+          "items": {
+            "type": "string"
+          }
+        },
+        "gap": {
+          "type": "string",
+          "description": "Gap between children",
+          "default": "8px"
+        },
+        "align": {
+          "type": "string",
+          "enum": [
+            "start",
+            "center",
+            "end",
+            "stretch"
+          ],
+          "default": "center"
+        },
+        "justify": {
+          "type": "string",
+          "enum": [
+            "start",
+            "center",
+            "end",
+            "between",
+            "around"
+          ],
+          "default": "start"
+        }
+      },
+      "required": [
+        "children"
+      ]
+    },
+    "Column": {
+      "type": "object",
+      "description": "Vertical layout container",
+      "properties": {
+        "children": {
+          "type": "array",
+          "description": "Child component IDs",
+          "items": {
+            "type": "string"
+          }
+        },
+        "gap": {
+          "type": "string",
+          "description": "Gap between children",
+          "default": "8px"
+        },
+        "align": {
+          "type": "string",
+          "enum": [
+            "start",
+            "center",
+            "end",
+            "stretch"
+          ],
+          "default": "stretch"
+        }
+      },
+      "required": [
+        "children"
+      ]
+    },
+    "IntegrationAction": {
+      "type": "object",
+      "description": "MCP/A2A integration action button (SI-specific)",
+      "properties": {
+        "type": {
+          "type": "string",
+          "enum": [
+            "mcp",
+            "a2a"
+          ],
+          "description": "Integration type"
+        },
+        "label": {
+          "$ref": "bound-value.json",
+          "description": "Button label"
+        },
+        "url": {
+          "$ref": "bound-value.json",
+          "description": "Integration endpoint URL"
+        },
+        "highlighted": {
+          "type": "boolean",
+          "description": "Visually emphasize this action",
+          "default": false
+        }
+      },
+      "required": [
+        "type",
+        "label"
+      ]
+    },
+    "AppHandoff": {
+      "type": "object",
+      "description": "Platform app handoff (SI-specific)",
+      "properties": {
+        "apps": {
+          "type": "object",
+          "description": "Platform-specific app configurations",
+          "additionalProperties": {
+            "type": "object",
+            "properties": {
+              "appId": {
+                "type": "string"
+              },
+              "deepLink": {
+                "type": "string"
+              },
+              "url": {
+                "type": "string",
+                "format": "uri"
+              }
+            }
+          }
+        }
+      },
+      "required": [
+        "apps"
+      ]
+    }
+  },
+  "type": "object",
+  "properties": {
+    "catalogId": {
+      "type": "string",
+      "const": "si-standard",
+      "description": "SI standard component catalog"
+    },
+    "components": {
+      "type": "array",
+      "description": "Available component types",
+      "items": {
+        "type": "string",
+        "enum": [
+          "Text",
+          "Button",
+          "Link",
+          "Image",
+          "Card",
+          "ProductCard",
+          "List",
+          "Row",
+          "Column",
+          "IntegrationAction",
+          "AppHandoff"
+        ]
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/a2ui/surface.json b/schemas/cache/a2ui/surface.json
index baf1865d4..40aba240d 100644
--- a/schemas/cache/a2ui/surface.json
+++ b/schemas/cache/a2ui/surface.json
@@ -1,38 +1,38 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "A2UI Surface",
   "description": "A contiguous UI region containing components",
+  "type": "object",
   "properties": {
+    "surfaceId": {
+      "type": "string",
+      "description": "Unique identifier for this surface"
+    },
     "catalogId": {
-      "default": "standard",
+      "type": "string",
       "description": "Component catalog to use for rendering",
-      "type": "string"
+      "default": "standard"
     },
     "components": {
+      "type": "array",
       "description": "Flat list of components (adjacency list structure)",
       "items": {
         "$ref": "component.json"
-      },
-      "type": "array"
-    },
-    "dataModel": {
-      "additionalProperties": true,
-      "description": "Application data that components can bind to",
-      "type": "object"
+      }
     },
     "rootId": {
-      "description": "ID of the root component (if not specified, first component is root)",
-      "type": "string"
+      "type": "string",
+      "description": "ID of the root component (if not specified, first component is root)"
     },
-    "surfaceId": {
-      "description": "Unique identifier for this surface",
-      "type": "string"
+    "dataModel": {
+      "type": "object",
+      "description": "Application data that components can bind to",
+      "additionalProperties": true
     }
   },
   "required": [
     "surfaceId",
     "components"
   ],
-  "title": "A2UI Surface",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/a2ui/user-action.json b/schemas/cache/a2ui/user-action.json
new file mode 100644
index 000000000..9c9a9ccc6
--- /dev/null
+++ b/schemas/cache/a2ui/user-action.json
@@ -0,0 +1,46 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "A2UI User Action",
+  "description": "User interaction event sent from client to agent",
+  "type": "object",
+  "properties": {
+    "surfaceId": {
+      "type": "string",
+      "description": "ID of the surface where the action occurred"
+    },
+    "componentId": {
+      "type": "string",
+      "description": "ID of the component that triggered the action"
+    },
+    "action": {
+      "type": "object",
+      "description": "The action that was triggered",
+      "properties": {
+        "name": {
+          "type": "string",
+          "description": "Action identifier (e.g., 'view_product', 'add_to_cart')"
+        },
+        "context": {
+          "type": "object",
+          "description": "Context data resolved from data model bindings",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "name"
+      ],
+      "additionalProperties": true
+    },
+    "timestamp": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the action occurred"
+    }
+  },
+  "required": [
+    "surfaceId",
+    "componentId",
+    "action"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/account/get-account-financials-request.json b/schemas/cache/account/get-account-financials-request.json
index dc7985b2d..c5d0dd324 100644
--- a/schemas/cache/account/get-account-financials-request.json
+++ b/schemas/cache/account/get-account-financials-request.json
@@ -1,17 +1,45 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Account Financials Request",
   "description": "Request financial status for an operator-billed account. Returns spend summary, credit/balance status, and invoice history. Only applicable when the seller declares account_financials capability.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account to query financials for. Must be an operator-billed account."
+    },
+    "period": {
+      "$ref": "../core/date-range.json",
+      "description": "Date range for the spend summary. Defaults to the current billing cycle if omitted."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "account"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Query by account ID for current billing cycle",
       "data": {
         "account": {
           "account_id": "acc_acme_001"
         }
-      },
-      "description": "Query by account ID for current billing cycle"
+      }
     },
     {
+      "description": "Query by natural key for a specific period",
       "data": {
         "account": {
           "brand": {
@@ -20,44 +48,22 @@
           "operator": "acme-corp.com"
         },
         "period": {
-          "end": "2026-01-31",
-          "start": "2026-01-01"
+          "start": "2026-01-01",
+          "end": "2026-01-31"
         }
-      },
-      "description": "Query by natural key for a specific period"
+      }
     },
     {
+      "description": "Agency querying financials for a client account",
       "data": {
         "account": {
           "brand": {
-            "brand_id": "spark",
-            "domain": "nova-brands.com"
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
           },
           "operator": "pinnacle-media.com"
         }
-      },
-      "description": "Agency querying financials for a client account"
-    }
-  ],
-  "properties": {
-    "account": {
-      "$ref": "../core/account-ref.json",
-      "description": "Account to query financials for. Must be an operator-billed account."
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "period": {
-      "$ref": "../core/date-range.json",
-      "description": "Date range for the spend summary. Defaults to the current billing cycle if omitted."
+      }
     }
-  },
-  "required": [
-    "account"
-  ],
-  "title": "Get Account Financials Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/account/get-account-financials-response.json b/schemas/cache/account/get-account-financials-response.json
index ecaa75023..8bd243278 100644
--- a/schemas/cache/account/get-account-financials-response.json
+++ b/schemas/cache/account/get-account-financials-response.json
@@ -1,200 +1,151 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Account Financials Response",
   "description": "Financial status for an operator-billed account. Returns spend summary, credit/balance status, payment status, and invoice history. The level of detail varies by seller \u2014 only account, currency, and period are guaranteed on success.",
-  "examples": [
+  "type": "object",
+  "oneOf": [
     {
-      "data": {
+      "title": "GetAccountFinancialsSuccess",
+      "description": "Financial data retrieved successfully",
+      "type": "object",
+      "properties": {
         "account": {
-          "account_id": "acc_acme_001"
+          "$ref": "../core/account-ref.json",
+          "description": "Account reference, echoed from the request"
         },
-        "credit": {
-          "available_credit": 54770.0,
-          "credit_limit": 100000.0,
-          "utilization_percent": 45.23
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code for all monetary amounts in this response"
         },
-        "currency": "USD",
-        "invoices": [
-          {
-            "amount": 38500.0,
-            "due_date": "2026-02-28",
-            "invoice_id": "inv_2026_01",
-            "paid_date": "2026-02-15",
-            "period": {
-              "end": "2026-01-31",
-              "start": "2026-01-01"
-            },
-            "status": "paid"
-          }
-        ],
-        "payment_status": "current",
-        "payment_terms": "net_30",
         "period": {
-          "end": "2026-02-28",
-          "start": "2026-02-01"
-        },
-        "spend": {
-          "media_buy_count": 3,
-          "total_spend": 45230.0
-        },
-        "timezone": "America/New_York"
-      },
-      "description": "Credit account \u2014 current, with invoice history"
-    },
-    {
-      "data": {
-        "account": {
-          "brand": {
-            "domain": "acme-corp.com"
-          },
-          "operator": "acme-corp.com"
-        },
-        "balance": {
-          "available": 1800.0,
-          "last_top_up": {
-            "amount": 10000.0,
-            "date": "2026-02-01"
-          }
+          "$ref": "../core/date-range.json",
+          "description": "The actual period covered by spend data. May differ from the requested period if the seller adjusts to billing cycle boundaries."
         },
-        "currency": "USD",
-        "payment_status": "current",
-        "payment_terms": "prepay",
-        "period": {
-          "end": "2026-02-28",
-          "start": "2026-02-01"
+        "timezone": {
+          "type": "string",
+          "description": "IANA timezone of the seller's billing day boundaries (e.g., 'America/New_York'). All dates in this response \u2014 period, invoice periods, due dates \u2014 are calendar dates in this timezone. Buyers in a different timezone should expect spend boundaries to differ from their own calendar day."
         },
         "spend": {
-          "media_buy_count": 2,
-          "total_spend": 8200.0
+          "type": "object",
+          "description": "Spend summary for the period",
+          "properties": {
+            "total_spend": {
+              "type": "number",
+              "minimum": 0,
+              "description": "Total spend in the period, in currency"
+            },
+            "media_buy_count": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of active media buys in the period"
+            }
+          },
+          "required": [
+            "total_spend"
+          ]
         },
-        "timezone": "America/Los_Angeles"
-      },
-      "description": "Prepay account with low balance"
-    },
-    {
-      "data": {
-        "errors": [
-          {
-            "code": "UNSUPPORTED_FEATURE",
-            "message": "Financial data is not available for agent-billed accounts. The agent's own billing system is the source of truth."
-          }
-        ]
-      },
-      "description": "Agent-billed account \u2014 not supported"
-    }
-  ],
-  "oneOf": [
-    {
-      "additionalProperties": true,
-      "description": "Financial data retrieved successfully",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
-      "properties": {
-        "account": {
-          "$ref": "../core/account-ref.json",
-          "description": "Account reference, echoed from the request"
+        "credit": {
+          "type": "object",
+          "description": "Credit status. Present for credit-based accounts (payment_terms like net_30).",
+          "properties": {
+            "credit_limit": {
+              "type": "number",
+              "minimum": 0,
+              "description": "Maximum outstanding balance allowed"
+            },
+            "available_credit": {
+              "type": "number",
+              "description": "Remaining credit available (credit_limit minus outstanding balance)"
+            },
+            "utilization_percent": {
+              "type": "number",
+              "minimum": 0,
+              "maximum": 100,
+              "description": "Credit utilization as a percentage (0-100)"
+            }
+          },
+          "required": [
+            "credit_limit",
+            "available_credit"
+          ]
         },
         "balance": {
+          "type": "object",
           "description": "Prepay balance. Present for prepay accounts.",
           "properties": {
             "available": {
-              "description": "Remaining prepaid balance",
+              "type": "number",
               "minimum": 0,
-              "type": "number"
+              "description": "Remaining prepaid balance"
             },
             "last_top_up": {
+              "type": "object",
               "description": "Most recent balance top-up",
               "properties": {
                 "amount": {
-                  "description": "Top-up amount",
+                  "type": "number",
                   "minimum": 0,
-                  "type": "number"
+                  "description": "Top-up amount"
                 },
                 "date": {
-                  "description": "Date of top-up",
+                  "type": "string",
                   "format": "date",
-                  "type": "string"
+                  "description": "Date of top-up"
                 }
               },
               "required": [
                 "amount",
                 "date"
-              ],
-              "type": "object"
+              ]
             }
           },
           "required": [
             "available"
-          ],
-          "type": "object"
+          ]
         },
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "credit": {
-          "description": "Credit status. Present for credit-based accounts (payment_terms like net_30).",
-          "properties": {
-            "available_credit": {
-              "description": "Remaining credit available (credit_limit minus outstanding balance)",
-              "type": "number"
-            },
-            "credit_limit": {
-              "description": "Maximum outstanding balance allowed",
-              "minimum": 0,
-              "type": "number"
-            },
-            "utilization_percent": {
-              "description": "Credit utilization as a percentage (0-100)",
-              "maximum": 100,
-              "minimum": 0,
-              "type": "number"
-            }
-          },
-          "required": [
-            "credit_limit",
-            "available_credit"
+        "payment_status": {
+          "type": "string",
+          "enum": [
+            "current",
+            "past_due",
+            "suspended"
           ],
-          "type": "object"
+          "description": "Overall payment status. current: all obligations met. past_due: one or more invoices overdue. suspended: account suspended due to payment issues."
         },
-        "currency": {
-          "description": "ISO 4217 currency code for all monetary amounts in this response",
-          "pattern": "^[A-Z]{3}$",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+        "payment_terms": {
+          "type": "string",
+          "enum": [
+            "net_15",
+            "net_30",
+            "net_45",
+            "net_60",
+            "net_90",
+            "prepay"
+          ],
+          "description": "Payment terms in effect for this account"
         },
         "invoices": {
+          "type": "array",
           "description": "Recent invoices. Sellers may limit the number returned.",
           "items": {
+            "type": "object",
             "properties": {
-              "amount": {
-                "description": "Invoice total in currency",
-                "minimum": 0,
-                "type": "number"
-              },
-              "due_date": {
-                "description": "Payment due date",
-                "format": "date",
-                "type": "string"
-              },
               "invoice_id": {
-                "description": "Seller-assigned invoice identifier",
-                "type": "string"
-              },
-              "paid_date": {
-                "description": "Date payment was received. Present when status is 'paid'.",
-                "format": "date",
-                "type": "string"
+                "type": "string",
+                "description": "Seller-assigned invoice identifier"
               },
               "period": {
                 "$ref": "../core/date-range.json",
                 "description": "Billing period covered by this invoice"
               },
+              "amount": {
+                "type": "number",
+                "minimum": 0,
+                "description": "Invoice total in currency"
+              },
               "status": {
-                "description": "Invoice status",
+                "type": "string",
                 "enum": [
                   "draft",
                   "issued",
@@ -202,65 +153,31 @@
                   "past_due",
                   "void"
                 ],
-                "type": "string"
+                "description": "Invoice status"
+              },
+              "due_date": {
+                "type": "string",
+                "format": "date",
+                "description": "Payment due date"
+              },
+              "paid_date": {
+                "type": "string",
+                "format": "date",
+                "description": "Date payment was received. Present when status is 'paid'."
               }
             },
             "required": [
               "invoice_id",
               "amount",
               "status"
-            ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "payment_status": {
-          "description": "Overall payment status. current: all obligations met. past_due: one or more invoices overdue. suspended: account suspended due to payment issues.",
-          "enum": [
-            "current",
-            "past_due",
-            "suspended"
-          ],
-          "type": "string"
-        },
-        "payment_terms": {
-          "description": "Payment terms in effect for this account",
-          "enum": [
-            "net_15",
-            "net_30",
-            "net_45",
-            "net_60",
-            "net_90",
-            "prepay"
-          ],
-          "type": "string"
-        },
-        "period": {
-          "$ref": "../core/date-range.json",
-          "description": "The actual period covered by spend data. May differ from the requested period if the seller adjusts to billing cycle boundaries."
+            ]
+          }
         },
-        "spend": {
-          "description": "Spend summary for the period",
-          "properties": {
-            "media_buy_count": {
-              "description": "Number of active media buys in the period",
-              "minimum": 0,
-              "type": "integer"
-            },
-            "total_spend": {
-              "description": "Total spend in the period, in currency",
-              "minimum": 0,
-              "type": "number"
-            }
-          },
-          "required": [
-            "total_spend"
-          ],
-          "type": "object"
+        "context": {
+          "$ref": "../core/context.json"
         },
-        "timezone": {
-          "description": "IANA timezone of the seller's billing day boundaries (e.g., 'America/New_York'). All dates in this response \u2014 period, invoice periods, due dates \u2014 are calendar dates in this timezone. Buyers in a different timezone should expect spend boundaries to differ from their own calendar day.",
-          "type": "string"
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -269,12 +186,37 @@
         "period",
         "timezone"
       ],
-      "title": "GetAccountFinancialsSuccess",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
+      "title": "GetAccountFinancialsError",
       "description": "Operation failed \u2014 financials not available",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
       "not": {
         "anyOf": [
           {
@@ -298,30 +240,88 @@
             ]
           }
         ]
-      },
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
+      }
+    }
+  ],
+  "examples": [
+    {
+      "description": "Credit account \u2014 current, with invoice history",
+      "data": {
+        "account": {
+          "account_id": "acc_acme_001"
         },
-        "errors": {
-          "description": "Operation-level errors",
-          "items": {
-            "$ref": "../core/error.json"
+        "currency": "USD",
+        "period": {
+          "start": "2026-02-01",
+          "end": "2026-02-28"
+        },
+        "timezone": "America/New_York",
+        "spend": {
+          "total_spend": 45230.0,
+          "media_buy_count": 3
+        },
+        "credit": {
+          "credit_limit": 100000.0,
+          "available_credit": 54770.0,
+          "utilization_percent": 45.23
+        },
+        "payment_status": "current",
+        "payment_terms": "net_30",
+        "invoices": [
+          {
+            "invoice_id": "inv_2026_01",
+            "period": {
+              "start": "2026-01-01",
+              "end": "2026-01-31"
+            },
+            "amount": 38500.0,
+            "status": "paid",
+            "due_date": "2026-02-28",
+            "paid_date": "2026-02-15"
+          }
+        ]
+      }
+    },
+    {
+      "description": "Prepay account with low balance",
+      "data": {
+        "account": {
+          "brand": {
+            "domain": "acme-corp.com"
           },
-          "minItems": 1,
-          "type": "array"
+          "operator": "acme-corp.com"
         },
-        "ext": {
-          "$ref": "../core/ext.json"
-        }
-      },
-      "required": [
-        "errors"
-      ],
-      "title": "GetAccountFinancialsError",
-      "type": "object"
+        "currency": "USD",
+        "period": {
+          "start": "2026-02-01",
+          "end": "2026-02-28"
+        },
+        "timezone": "America/Los_Angeles",
+        "spend": {
+          "total_spend": 8200.0,
+          "media_buy_count": 2
+        },
+        "balance": {
+          "available": 1800.0,
+          "last_top_up": {
+            "amount": 10000.0,
+            "date": "2026-02-01"
+          }
+        },
+        "payment_status": "current",
+        "payment_terms": "prepay"
+      }
+    },
+    {
+      "description": "Agent-billed account \u2014 not supported",
+      "data": {
+        "errors": [
+          {
+            "code": "UNSUPPORTED_FEATURE",
+            "message": "Financial data is not available for agent-billed accounts. The agent's own billing system is the source of truth."
+          }
+        ]
+      }
     }
-  ],
-  "title": "Get Account Financials Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/account/list-accounts-request.json b/schemas/cache/account/list-accounts-request.json
index 8cf254921..0d2dbe0f7 100644
--- a/schemas/cache/account/list-accounts-request.json
+++ b/schemas/cache/account/list-accounts-request.json
@@ -1,23 +1,17 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Accounts Request",
   "description": "Request parameters for listing accounts accessible to the authenticated agent",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-request.json"
-    },
-    "sandbox": {
-      "description": "Filter by sandbox status. true returns only sandbox accounts, false returns only production accounts. Omit to return all accounts. Primarily used with explicit accounts (require_operator_auth: true) where sandbox accounts are pre-existing test accounts on the platform.",
-      "type": "boolean"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "status": {
-      "description": "Filter accounts by status. Omit to return accounts in all statuses.",
+      "type": "string",
       "enum": [
         "active",
         "pending_approval",
@@ -26,10 +20,22 @@
         "suspended",
         "closed"
       ],
-      "type": "string"
+      "description": "Filter accounts by status. Omit to return accounts in all statuses."
+    },
+    "pagination": {
+      "$ref": "../core/pagination-request.json"
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "Filter by sandbox status. true returns only sandbox accounts, false returns only production accounts. Omit to return all accounts. Primarily used with explicit accounts (require_operator_auth: true) where sandbox accounts are pre-existing test accounts on the platform."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [],
-  "title": "List Accounts Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/account/list-accounts-response.json b/schemas/cache/account/list-accounts-response.json
index 2afe44ecf..bd282efaf 100644
--- a/schemas/cache/account/list-accounts-response.json
+++ b/schemas/cache/account/list-accounts-response.json
@@ -1,48 +1,79 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Accounts Response",
   "description": "Response payload for list_accounts task",
+  "type": "object",
+  "properties": {
+    "accounts": {
+      "type": "array",
+      "description": "Array of accounts accessible to the authenticated agent",
+      "items": {
+        "$ref": "../core/account.json"
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings",
+      "items": {
+        "$ref": "../core/error.json"
+      }
+    },
+    "pagination": {
+      "$ref": "../core/pagination-response.json"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "accounts"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Agency with multiple client accounts",
       "data": {
         "accounts": [
           {
             "account_id": "acc_acme_pinnacle",
-            "account_scope": "operator_brand",
+            "name": "Acme c/o Pinnacle",
             "advertiser": "Acme Corp",
-            "billing": "operator",
             "billing_proxy": "Pinnacle Media",
             "brand": {
               "domain": "acme-corp.com"
             },
-            "name": "Acme c/o Pinnacle",
             "operator": "pinnacle-media.com",
+            "billing": "operator",
+            "account_scope": "operator_brand",
             "status": "active"
           },
           {
             "account_id": "acc_nova_pinnacle",
-            "account_scope": "operator_brand",
+            "name": "Nova c/o Pinnacle",
             "advertiser": "Nova Brands",
-            "billing": "operator",
             "billing_proxy": "Pinnacle Media",
             "brand": {
-              "brand_id": "spark",
-              "domain": "nova-brands.com"
+              "domain": "nova-brands.com",
+              "brand_id": "spark"
             },
-            "name": "Nova c/o Pinnacle",
             "operator": "pinnacle-media.com",
+            "billing": "operator",
+            "account_scope": "operator_brand",
             "status": "active"
           },
           {
             "account_id": "acc_pinnacle",
-            "account_scope": "operator",
+            "name": "Pinnacle",
             "advertiser": "Pinnacle Media",
-            "billing": "operator",
             "brand": {
               "domain": "pinnacle-media.com"
             },
-            "name": "Pinnacle",
             "operator": "pinnacle-media.com",
+            "billing": "operator",
+            "account_scope": "operator",
             "status": "active"
           }
         ],
@@ -50,58 +81,27 @@
           "has_more": false,
           "total_count": 3
         }
-      },
-      "description": "Agency with multiple client accounts"
+      }
     },
     {
+      "description": "Direct advertiser with single account",
       "data": {
         "accounts": [
           {
             "account_id": "acc_acme_direct",
-            "account_scope": "brand",
+            "name": "Acme",
             "advertiser": "Acme Corp",
-            "billing": "operator",
             "brand": {
               "domain": "acme-corp.com"
             },
-            "name": "Acme",
             "operator": "acme-corp.com",
-            "rate_card": "acme_vip_2024",
-            "status": "active"
+            "billing": "operator",
+            "account_scope": "brand",
+            "status": "active",
+            "rate_card": "acme_vip_2024"
           }
         ]
-      },
-      "description": "Direct advertiser with single account"
+      }
     }
-  ],
-  "properties": {
-    "accounts": {
-      "description": "Array of accounts accessible to the authenticated agent",
-      "items": {
-        "$ref": "../core/account.json"
-      },
-      "type": "array"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "errors": {
-      "description": "Task-specific errors and warnings",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-response.json"
-    }
-  },
-  "required": [
-    "accounts"
-  ],
-  "title": "List Accounts Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/account/report-usage-request.json b/schemas/cache/account/report-usage-request.json
index 7146f5e09..09195b5bf 100644
--- a/schemas/cache/account/report-usage-request.json
+++ b/schemas/cache/account/report-usage-request.json
@@ -1,126 +1,81 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Report Usage Request",
   "description": "Reports how a vendor's service was consumed after campaign delivery. Used by orchestrators (DSPs, storefronts) to inform vendor agents (signals, governance, creative) what was used so the vendor can track earned revenue and verify billing. Records can span multiple accounts and campaigns in a single request.",
-  "examples": [
-    {
-      "data": {
-        "idempotency_key": "550e8400-e29b-41d4-a716-446655440000",
-        "reporting_period": {
-          "end": "2025-03-31T23:59:59Z",
-          "start": "2025-03-01T00:00:00Z"
-        },
-        "usage": [
-          {
-            "account": {
-              "account_id": "acct_pinnacle_signals"
-            },
-            "currency": "USD",
-            "impressions": 4200000,
-            "media_spend": 21000.0,
-            "pricing_option_id": "po_lux_auto_cpm",
-            "signal_agent_segment_id": "luxury_auto_intenders",
-            "vendor_cost": 2100.0
-          }
-        ]
-      },
-      "description": "Signal usage for a single campaign"
-    },
-    {
-      "data": {
-        "reporting_period": {
-          "end": "2025-03-31T23:59:59Z",
-          "start": "2025-03-01T00:00:00Z"
-        },
-        "usage": [
-          {
-            "account": {
-              "account_id": "acct_pinnacle_signals"
-            },
-            "currency": "USD",
-            "impressions": 2100000,
-            "pricing_option_id": "po_lux_auto_cpm",
-            "signal_agent_segment_id": "luxury_auto_intenders",
-            "vendor_cost": 1050.0
-          },
-          {
-            "account": {
-              "account_id": "acct_nova"
-            },
-            "currency": "USD",
-            "impressions": 800000,
-            "pricing_option_id": "po_eco_cpm",
-            "signal_agent_segment_id": "eco_conscious_shoppers",
-            "vendor_cost": 400.0
-          }
-        ]
-      },
-      "description": "Multi-account batch across two campaigns"
-    }
-  ],
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "idempotency_key": {
-      "description": "Client-generated unique key for this request. If a request with the same key has already been accepted, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request. Prevents duplicate billing on retries.",
-      "type": "string"
+      "type": "string",
+      "description": "Client-generated unique key for this request. If a request with the same key has already been accepted, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request. Prevents duplicate billing on retries."
     },
     "reporting_period": {
       "$ref": "../core/datetime-range.json",
       "description": "The time range covered by this usage report. Applies to all records in the request."
     },
     "usage": {
+      "type": "array",
       "description": "One or more usage records. Each record is self-contained: it carries its own account, allowing a single request to span multiple accounts.",
+      "minItems": 1,
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
           "account": {
             "$ref": "../core/account-ref.json",
             "description": "Account for this usage record."
           },
+          "media_buy_id": {
+            "type": "string",
+            "description": "Seller-assigned media buy identifier. Links this usage record to a specific media buy."
+          },
+          "vendor_cost": {
+            "type": "number",
+            "minimum": 0,
+            "description": "Amount owed to the vendor for this record, denominated in currency."
+          },
           "currency": {
-            "description": "ISO 4217 currency code.",
+            "type": "string",
             "pattern": "^[A-Z]{3}$",
-            "type": "string"
+            "description": "ISO 4217 currency code."
+          },
+          "pricing_option_id": {
+            "type": "string",
+            "description": "Pricing option identifier from the vendor's discovery response (e.g., get_signals, list_content_standards). The vendor uses this to verify the correct rate was applied."
           },
           "impressions": {
-            "description": "Impressions delivered using this vendor service.",
+            "type": "integer",
             "minimum": 0,
-            "type": "integer"
-          },
-          "media_buy_id": {
-            "description": "Seller-assigned media buy identifier. Links this usage record to a specific media buy.",
-            "type": "string"
+            "description": "Impressions delivered using this vendor service."
           },
           "media_spend": {
-            "description": "Media spend in currency for the period. Required when a percent_of_media pricing model was used, so the vendor can verify the applied rate.",
+            "type": "number",
             "minimum": 0,
-            "type": "number"
-          },
-          "pricing_option_id": {
-            "description": "Pricing option identifier from the vendor's discovery response (e.g., get_signals, list_content_standards). The vendor uses this to verify the correct rate was applied.",
-            "type": "string"
-          },
-          "rights_id": {
-            "description": "Rights grant identifier from acquire_rights. Required for brand/rights agents. Links usage records to specific rights grants for cap tracking, billing verification, and overage calculation.",
-            "type": "string"
+            "description": "Media spend in currency for the period. Required when a percent_of_media pricing model was used, so the vendor can verify the applied rate."
           },
           "signal_agent_segment_id": {
-            "description": "Signal identifier from get_signals. Required for signals agents.",
-            "type": "string"
+            "type": "string",
+            "description": "Signal identifier from get_signals. Required for signals agents."
           },
           "standards_id": {
-            "description": "Content standards configuration identifier. Required for governance agents.",
-            "type": "string"
+            "type": "string",
+            "description": "Content standards configuration identifier. Required for governance agents."
           },
-          "vendor_cost": {
-            "description": "Amount owed to the vendor for this record, denominated in currency.",
-            "minimum": 0,
-            "type": "number"
+          "rights_id": {
+            "type": "string",
+            "description": "Rights grant identifier from acquire_rights. Required for brand/rights agents. Links usage records to specific rights grants for cap tracking, billing verification, and overage calculation."
+          },
+          "creative_id": {
+            "type": "string",
+            "description": "Creative identifier from build_creative or list_creatives. Required for creative agents. Links usage records to specific creatives for billing verification."
+          },
+          "property_list_id": {
+            "type": "string",
+            "description": "Property list identifier from list_property_lists. Required for property list agents. Links usage records to specific property lists for billing verification."
           }
         },
         "required": [
@@ -128,16 +83,77 @@
           "vendor_cost",
           "currency"
         ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
+        "additionalProperties": true
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "reporting_period",
     "usage"
   ],
-  "title": "Report Usage Request",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Signal usage for a single campaign",
+      "data": {
+        "idempotency_key": "550e8400-e29b-41d4-a716-446655440000",
+        "reporting_period": {
+          "start": "2025-03-01T00:00:00Z",
+          "end": "2025-03-31T23:59:59Z"
+        },
+        "usage": [
+          {
+            "account": {
+              "account_id": "acct_pinnacle_signals"
+            },
+            "signal_agent_segment_id": "luxury_auto_intenders",
+            "pricing_option_id": "po_lux_auto_cpm",
+            "impressions": 4200000,
+            "media_spend": 21000,
+            "vendor_cost": 2100,
+            "currency": "USD"
+          }
+        ]
+      }
+    },
+    {
+      "description": "Multi-account batch across two campaigns",
+      "data": {
+        "idempotency_key": "8b7a9c2d-3456-4789-abcd-ef0123456789",
+        "reporting_period": {
+          "start": "2025-03-01T00:00:00Z",
+          "end": "2025-03-31T23:59:59Z"
+        },
+        "usage": [
+          {
+            "account": {
+              "account_id": "acct_pinnacle_signals"
+            },
+            "signal_agent_segment_id": "luxury_auto_intenders",
+            "pricing_option_id": "po_lux_auto_cpm",
+            "impressions": 2100000,
+            "vendor_cost": 1050,
+            "currency": "USD"
+          },
+          {
+            "account": {
+              "account_id": "acct_nova"
+            },
+            "signal_agent_segment_id": "eco_conscious_shoppers",
+            "pricing_option_id": "po_eco_cpm",
+            "impressions": 800000,
+            "vendor_cost": 400,
+            "currency": "USD"
+          }
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/account/report-usage-response.json b/schemas/cache/account/report-usage-response.json
index 8a0fc81c0..1254d33dd 100644
--- a/schemas/cache/account/report-usage-response.json
+++ b/schemas/cache/account/report-usage-response.json
@@ -1,55 +1,55 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Report Usage Response",
   "description": "Response from report_usage. Partial acceptance is valid \u2014 records that pass validation are stored even when others fail.",
-  "examples": [
-    {
-      "data": {
-        "accepted": 2
-      },
-      "description": "All records accepted"
-    },
-    {
-      "data": {
-        "accepted": 1,
-        "errors": [
-          {
-            "code": "INVALID_PRICING_OPTION",
-            "field": "usage[1].pricing_option_id",
-            "message": "pricing_option_id 'po_unknown' does not exist on this account"
-          }
-        ]
-      },
-      "description": "Partial acceptance \u2014 one record failed validation"
-    }
-  ],
+  "type": "object",
   "properties": {
     "accepted": {
-      "description": "Number of usage records successfully stored.",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
-    },
-    "context": {
-      "$ref": "../core/context.json"
+      "description": "Number of usage records successfully stored."
     },
     "errors": {
+      "type": "array",
       "description": "Validation errors for individual records. The field property identifies which record failed (e.g., 'usage[1].pricing_option_id').",
       "items": {
         "$ref": "../core/error.json"
-      },
-      "type": "array"
+      }
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, the account is a sandbox account and no billing occurred."
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
-    },
-    "sandbox": {
-      "description": "When true, the account is a sandbox account and no billing occurred.",
-      "type": "boolean"
     }
   },
   "required": [
     "accepted"
   ],
-  "title": "Report Usage Response",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "All records accepted",
+      "data": {
+        "accepted": 2
+      }
+    },
+    {
+      "description": "Partial acceptance \u2014 one record failed validation",
+      "data": {
+        "accepted": 1,
+        "errors": [
+          {
+            "code": "INVALID_PRICING_OPTION",
+            "message": "pricing_option_id 'po_unknown' does not exist on this account",
+            "field": "usage[1].pricing_option_id"
+          }
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/account/sync-accounts-request.json b/schemas/cache/account/sync-accounts-request.json
index 50145dfbf..5337f6195 100644
--- a/schemas/cache/account/sync-accounts-request.json
+++ b/schemas/cache/account/sync-accounts-request.json
@@ -1,190 +1,212 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Accounts Request",
   "description": "Sync advertiser accounts with a seller using upsert semantics. The agent declares which brands it represents, who operates on each brand's behalf, and the billing model. The seller provisions or links accounts accordingly, returning per-account status.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. Natural per-account upsert keys (brand, operator) handle resource-level dedup, but the envelope triggers onboarding webhooks, billing setup, and audit events \u2014 this key prevents those side effects from firing twice on retry. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "accounts": {
+      "type": "array",
+      "description": "Advertiser accounts to sync",
+      "items": {
+        "type": "object",
+        "description": "An advertiser account the agent wants to operate on the seller",
+        "properties": {
+          "brand": {
+            "$ref": "../core/brand-ref.json",
+            "description": "Brand reference identifying the advertiser. Uses the brand's house domain and optional brand_id from brand.json."
+          },
+          "operator": {
+            "type": "string",
+            "description": "Domain of the entity operating on the brand's behalf (e.g., 'pinnacle-media.com'). When the brand operates directly, this is the brand's domain. Verified against the brand's authorized_operators in brand.json.",
+            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+          },
+          "billing": {
+            "type": "string",
+            "enum": [
+              "operator",
+              "agent",
+              "advertiser"
+            ],
+            "description": "Who should be invoiced. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing across brands. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The seller must either accept this billing model or reject the request."
+          },
+          "billing_entity": {
+            "$ref": "../core/business-entity.json",
+            "description": "Business entity details for the party responsible for payment. The agent provides this so the seller has the legal name, tax IDs, address, and bank details needed for formal B2B invoicing."
+          },
+          "payment_terms": {
+            "type": "string",
+            "enum": [
+              "net_15",
+              "net_30",
+              "net_45",
+              "net_60",
+              "net_90",
+              "prepay"
+            ],
+            "description": "Payment terms for this account. The seller must either accept these terms or reject the account \u2014 terms are never silently remapped. When omitted, the seller applies its default terms."
+          },
+          "sandbox": {
+            "type": "boolean",
+            "description": "When true, provision this as a sandbox account with no real platform calls or billing. Only applicable to implicit accounts (require_operator_auth: false). For explicit accounts, sandbox accounts are pre-existing test accounts discovered via list_accounts."
+          },
+          "preferred_reporting_protocol": {
+            "$ref": "../enums/cloud-storage-protocol.json",
+            "description": "Buyer's preferred cloud storage protocol for offline reporting delivery. The seller provisions the account's reporting_bucket using this protocol if supported. When omitted, the seller chooses from its supported offline_delivery_protocols. Only meaningful when the seller's reporting_delivery_methods includes 'offline'."
+          }
+        },
+        "required": [
+          "brand",
+          "operator",
+          "billing"
+        ],
+        "additionalProperties": true
+      },
+      "maxItems": 1000
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, accounts previously synced by this agent but not included in this request will be deactivated. Scoped to the authenticated agent \u2014 does not affect accounts managed by other agents. Use with caution."
+    },
+    "dry_run": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, preview what would change without applying. Returns what would be created/updated/deactivated."
+    },
+    "push_notification_config": {
+      "$ref": "../core/push-notification-config.json",
+      "description": "Webhook for async notifications when account status changes (e.g., pending_approval transitions to active)."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "accounts"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Agency syncing multiple advertisers with different billing",
       "data": {
+        "idempotency_key": "a7f9c2e4-1234-4567-89ab-cdef01234567",
         "accounts": [
           {
-            "billing": "operator",
             "brand": {
-              "brand_id": "spark",
-              "domain": "nova-brands.com"
+              "domain": "nova-brands.com",
+              "brand_id": "spark"
             },
-            "operator": "pinnacle-media.com"
+            "operator": "pinnacle-media.com",
+            "billing": "operator"
           },
           {
-            "billing": "agent",
             "brand": {
-              "brand_id": "glow",
-              "domain": "nova-brands.com"
+              "domain": "nova-brands.com",
+              "brand_id": "glow"
             },
-            "operator": "pinnacle-media.com"
+            "operator": "pinnacle-media.com",
+            "billing": "agent"
           }
         ]
-      },
-      "description": "Agency syncing multiple advertisers with different billing"
+      }
     },
     {
+      "description": "Brand buying direct with payment terms",
       "data": {
+        "idempotency_key": "b8e0d3f5-2345-4678-9abc-def012345678",
         "accounts": [
           {
-            "billing": "operator",
             "brand": {
               "domain": "acme-corp.com"
             },
             "operator": "acme-corp.com",
+            "billing": "operator",
             "payment_terms": "net_30"
           }
         ]
-      },
-      "description": "Brand buying direct with payment terms"
+      }
     },
     {
+      "description": "Agent consolidating billing with net-60 terms",
       "data": {
+        "idempotency_key": "c9f1e4a6-3456-4789-abcd-ef0123456789",
         "accounts": [
           {
-            "billing": "agent",
             "brand": {
-              "brand_id": "spark",
-              "domain": "nova-brands.com"
+              "domain": "nova-brands.com",
+              "brand_id": "spark"
             },
             "operator": "pinnacle-media.com",
+            "billing": "agent",
             "payment_terms": "net_60"
           },
           {
-            "billing": "agent",
             "brand": {
-              "brand_id": "glow",
-              "domain": "nova-brands.com"
+              "domain": "nova-brands.com",
+              "brand_id": "glow"
             },
             "operator": "pinnacle-media.com",
+            "billing": "agent",
             "payment_terms": "net_60"
           }
         ]
-      },
-      "description": "Agent consolidating billing with net-60 terms"
+      }
     },
     {
+      "description": "Advertiser billed directly with structured billing entity (DACH B2B)",
       "data": {
+        "idempotency_key": "d0a2f5b7-4567-489a-bcde-f01234567890",
         "accounts": [
           {
+            "brand": {
+              "domain": "acme-corp.com"
+            },
+            "operator": "pinnacle-media.com",
             "billing": "advertiser",
             "billing_entity": {
+              "legal_name": "Acme Corporation GmbH",
+              "vat_id": "DE987654321",
+              "registration_number": "HRB 67890",
               "address": {
+                "street": "Hauptstrasse 42",
                 "city": "Munich",
-                "country": "DE",
                 "postal_code": "80331",
-                "street": "Hauptstrasse 42"
-              },
-              "bank": {
-                "account_holder": "Acme Corporation GmbH",
-                "bic": "SOLADEST600",
-                "iban": "DE75512108001245126199"
+                "country": "DE"
               },
               "contacts": [
                 {
-                  "email": "billing@acme-corp.com",
+                  "role": "billing",
                   "name": "AP Department",
-                  "role": "billing"
+                  "email": "billing@acme-corp.com"
                 }
               ],
-              "legal_name": "Acme Corporation GmbH",
-              "registration_number": "HRB 67890",
-              "vat_id": "DE987654321"
-            },
-            "brand": {
-              "domain": "acme-corp.com"
+              "bank": {
+                "account_holder": "Acme Corporation GmbH",
+                "iban": "DE75512108001245126199",
+                "bic": "SOLADEST600"
+              }
             },
-            "operator": "pinnacle-media.com",
             "payment_terms": "net_30"
           }
         ]
-      },
-      "description": "Advertiser billed directly with structured billing entity (DACH B2B)"
+      }
     }
-  ],
-  "properties": {
-    "accounts": {
-      "description": "Advertiser accounts to sync",
-      "items": {
-        "additionalProperties": true,
-        "description": "An advertiser account the agent wants to operate on the seller",
-        "properties": {
-          "billing": {
-            "description": "Who should be invoiced. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing across brands. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The seller must either accept this billing model or reject the request.",
-            "enum": [
-              "operator",
-              "agent",
-              "advertiser"
-            ],
-            "type": "string"
-          },
-          "billing_entity": {
-            "$ref": "../core/business-entity.json",
-            "description": "Business entity details for the party responsible for payment. The agent provides this so the seller has the legal name, tax IDs, address, and bank details needed for formal B2B invoicing."
-          },
-          "brand": {
-            "$ref": "../core/brand-ref.json",
-            "description": "Brand reference identifying the advertiser. Uses the brand's house domain and optional brand_id from brand.json."
-          },
-          "operator": {
-            "description": "Domain of the entity operating on the brand's behalf (e.g., 'pinnacle-media.com'). When the brand operates directly, this is the brand's domain. Verified against the brand's authorized_operators in brand.json.",
-            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-            "type": "string"
-          },
-          "payment_terms": {
-            "description": "Payment terms for this account. The seller must either accept these terms or reject the account \u2014 terms are never silently remapped. When omitted, the seller applies its default terms.",
-            "enum": [
-              "net_15",
-              "net_30",
-              "net_45",
-              "net_60",
-              "net_90",
-              "prepay"
-            ],
-            "type": "string"
-          },
-          "sandbox": {
-            "description": "When true, provision this as a sandbox account with no real platform calls or billing. Only applicable to implicit accounts (require_operator_auth: false). For explicit accounts, sandbox accounts are pre-existing test accounts discovered via list_accounts.",
-            "type": "boolean"
-          }
-        },
-        "required": [
-          "brand",
-          "operator",
-          "billing"
-        ],
-        "type": "object"
-      },
-      "maxItems": 1000,
-      "type": "array"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "delete_missing": {
-      "default": false,
-      "description": "When true, accounts previously synced by this agent but not included in this request will be deactivated. Scoped to the authenticated agent \u2014 does not affect accounts managed by other agents. Use with caution.",
-      "type": "boolean"
-    },
-    "dry_run": {
-      "default": false,
-      "description": "When true, preview what would change without applying. Returns what would be created/updated/deactivated.",
-      "type": "boolean"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "push_notification_config": {
-      "$ref": "../core/push-notification-config.json",
-      "description": "Webhook for async notifications when account status changes (e.g., pending_approval transitions to active)."
-    }
-  },
-  "required": [
-    "accounts"
-  ],
-  "title": "Sync Accounts Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/account/sync-accounts-response.json b/schemas/cache/account/sync-accounts-response.json
index 82da86743..000ad803f 100644
--- a/schemas/cache/account/sync-accounts-response.json
+++ b/schemas/cache/account/sync-accounts-response.json
@@ -1,235 +1,115 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Accounts Response",
   "description": "Response from account sync operation. Returns per-account results with status and billing, or operation-level errors on complete failure.",
-  "examples": [
-    {
-      "data": {
-        "accounts": [
-          {
-            "account_id": "acc_spark_001",
-            "account_scope": "operator_brand",
-            "action": "created",
-            "billing": "operator",
-            "brand": {
-              "brand_id": "spark",
-              "domain": "nova-brands.com"
-            },
-            "name": "Spark (via Pinnacle)",
-            "operator": "pinnacle-media.com",
-            "status": "active"
-          },
-          {
-            "account_id": "acc_glow_pending",
-            "account_scope": "operator_brand",
-            "action": "created",
-            "billing": "operator",
-            "brand": {
-              "brand_id": "glow",
-              "domain": "nova-brands.com"
-            },
-            "name": "Glow",
-            "operator": "pinnacle-media.com",
-            "setup": {
-              "expires_at": "2026-03-10T00:00:00Z",
-              "message": "Complete advertiser registration and credit application",
-              "url": "https://seller.example.com/advertiser-onboard"
-            },
-            "status": "pending_approval"
-          }
-        ]
-      },
-      "description": "Mixed results \u2014 one active, one pending approval"
-    },
-    {
-      "data": {
-        "accounts": [
-          {
-            "action": "created",
-            "brand": {
-              "brand_id": "clearance",
-              "domain": "acme-corp.com"
-            },
-            "operator": "acme-corp.com",
-            "status": "rejected",
-            "warnings": [
-              "Account request declined: advertiser category not accepted on this platform."
-            ]
-          }
-        ]
-      },
-      "description": "Rejected account \u2014 no account_id assigned"
-    },
-    {
-      "data": {
-        "accounts": [
-          {
-            "action": "failed",
-            "brand": {
-              "domain": "acme-corp.com"
-            },
-            "errors": [
-              {
-                "code": "BILLING_NOT_SUPPORTED",
-                "message": "Operator billing is not supported. This seller only accepts agent billing."
-              }
-            ],
-            "operator": "acme-corp.com",
-            "status": "rejected"
-          }
-        ]
-      },
-      "description": "Unsupported billing \u2014 seller rejects the request"
-    },
-    {
-      "data": {
-        "accounts": [
-          {
-            "account_id": "acc_acme_direct_bill",
-            "account_scope": "operator_brand",
-            "action": "created",
-            "billing": "advertiser",
-            "billing_entity": {
-              "address": {
-                "city": "Munich",
-                "country": "DE",
-                "postal_code": "80331",
-                "street": "Hauptstrasse 42"
-              },
-              "contacts": [
-                {
-                  "email": "billing@acme-corp.com",
-                  "name": "AP Department",
-                  "role": "billing"
-                }
-              ],
-              "legal_name": "Acme Corporation GmbH",
-              "registration_number": "HRB 67890",
-              "vat_id": "DE987654321"
-            },
-            "brand": {
-              "domain": "acme-corp.com"
-            },
-            "name": "Acme Corp (billed direct)",
-            "operator": "pinnacle-media.com",
-            "payment_terms": "net_30",
-            "status": "active"
-          }
-        ]
-      },
-      "description": "Advertiser billed directly with billing entity (bank details omitted in response)"
-    },
-    {
-      "data": {
-        "accounts": [
-          {
-            "action": "failed",
-            "brand": {
-              "domain": "acme-corp.com"
-            },
-            "errors": [
-              {
-                "code": "PAYMENT_TERMS_NOT_SUPPORTED",
-                "message": "Net-60 payment terms are not available. Omit payment_terms to accept this seller's default terms (net_30)."
-              }
-            ],
-            "operator": "acme-corp.com",
-            "status": "rejected"
-          }
-        ]
-      },
-      "description": "Unsupported payment terms \u2014 seller rejects the request"
-    }
-  ],
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "SyncAccountsSuccess",
       "description": "Sync operation processed accounts (individual accounts may be pending or have action=failed)",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
+        "dry_run": {
+          "type": "boolean",
+          "description": "Whether this was a dry run (no actual changes made)"
+        },
         "accounts": {
+          "type": "array",
           "description": "Results for each account processed",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
               "account_id": {
-                "description": "Seller-assigned account identifier. Use this in subsequent create_media_buy and other account-scoped operations.",
-                "type": "string"
+                "type": "string",
+                "description": "Seller-assigned account identifier. Use this in subsequent create_media_buy and other account-scoped operations."
               },
-              "account_scope": {
-                "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to this operator+brand pair. agent: the agent's default account.",
-                "enum": [
-                  "operator",
-                  "brand",
-                  "operator_brand",
-                  "agent"
-                ],
-                "type": "string"
+              "brand": {
+                "$ref": "../core/brand-ref.json",
+                "description": "Brand reference, echoed from the request"
+              },
+              "operator": {
+                "type": "string",
+                "description": "Operator domain, echoed from request"
+              },
+              "name": {
+                "type": "string",
+                "description": "Human-readable account name assigned by the seller"
               },
               "action": {
-                "description": "Action taken for this account. created: new account provisioned. updated: existing account modified. unchanged: no changes needed. failed: could not process (see errors).",
+                "type": "string",
                 "enum": [
                   "created",
                   "updated",
                   "unchanged",
                   "failed"
                 ],
-                "type": "string"
+                "description": "Action taken for this account. created: new account provisioned. updated: existing account modified. unchanged: no changes needed. failed: could not process (see errors)."
+              },
+              "status": {
+                "type": "string",
+                "enum": [
+                  "active",
+                  "pending_approval",
+                  "rejected",
+                  "payment_required",
+                  "suspended",
+                  "closed"
+                ],
+                "description": "Account status. active: ready for use. pending_approval: seller reviewing (credit, legal). rejected: seller declined the account request. payment_required: credit limit reached or funds depleted. suspended: was active, now paused. closed: was active, now terminated."
               },
               "billing": {
-                "description": "Who is invoiced on this account. Matches the requested billing model.",
+                "type": "string",
                 "enum": [
                   "operator",
                   "agent",
                   "advertiser"
                 ],
-                "type": "string"
+                "description": "Who is invoiced on this account. Matches the requested billing model."
               },
               "billing_entity": {
                 "$ref": "../core/business-entity.json",
                 "description": "Business entity details for the party responsible for payment, echoed from the request. Sellers MAY add fields the agent omitted (e.g., filling in registration_number from a credit check), but MUST NOT return data from a different entity. Bank details are omitted (write-only)."
               },
-              "brand": {
-                "$ref": "../core/brand-ref.json",
-                "description": "Brand reference, echoed from the request"
+              "account_scope": {
+                "type": "string",
+                "enum": [
+                  "operator",
+                  "brand",
+                  "operator_brand",
+                  "agent"
+                ],
+                "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to this operator+brand pair. agent: the agent's default account."
               },
-              "credit_limit": {
+              "setup": {
+                "type": "object",
+                "description": "Setup information for pending accounts. Provides the agent (or human) with next steps to complete account activation.",
                 "properties": {
-                  "amount": {
-                    "minimum": 0,
-                    "type": "number"
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL where the human can complete the required action (credit application, legal agreement, add funds)"
                   },
-                  "currency": {
-                    "pattern": "^[A-Z]{3}$",
-                    "type": "string"
+                  "message": {
+                    "type": "string",
+                    "description": "Human-readable description of what's needed"
+                  },
+                  "expires_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this setup link expires"
                   }
                 },
                 "required": [
-                  "amount",
-                  "currency"
+                  "message"
                 ],
-                "type": "object"
+                "additionalProperties": true
               },
-              "errors": {
-                "description": "Per-account errors (only present when action is 'failed')",
-                "items": {
-                  "$ref": "../core/error.json"
-                },
-                "type": "array"
-              },
-              "name": {
-                "description": "Human-readable account name assigned by the seller",
-                "type": "string"
-              },
-              "operator": {
-                "description": "Operator domain, echoed from request",
-                "type": "string"
+              "rate_card": {
+                "type": "string",
+                "description": "Rate card applied to this account"
               },
               "payment_terms": {
-                "description": "Payment terms agreed for this account. When the account is active, these are the binding terms for all invoices on this account.",
+                "type": "string",
                 "enum": [
                   "net_15",
                   "net_30",
@@ -238,58 +118,42 @@
                   "net_90",
                   "prepay"
                 ],
-                "type": "string"
+                "description": "Payment terms agreed for this account. When the account is active, these are the binding terms for all invoices on this account."
               },
-              "rate_card": {
-                "description": "Rate card applied to this account",
-                "type": "string"
-              },
-              "sandbox": {
-                "description": "Whether this is a sandbox account, echoed from the request. Only present for implicit accounts.",
-                "type": "boolean"
-              },
-              "setup": {
-                "additionalProperties": true,
-                "description": "Setup information for pending accounts. Provides the agent (or human) with next steps to complete account activation.",
+              "credit_limit": {
+                "type": "object",
                 "properties": {
-                  "expires_at": {
-                    "description": "When this setup link expires",
-                    "format": "date-time",
-                    "type": "string"
-                  },
-                  "message": {
-                    "description": "Human-readable description of what's needed",
-                    "type": "string"
+                  "amount": {
+                    "type": "number",
+                    "minimum": 0
                   },
-                  "url": {
-                    "description": "URL where the human can complete the required action (credit application, legal agreement, add funds)",
-                    "format": "uri",
-                    "type": "string"
+                  "currency": {
+                    "type": "string",
+                    "pattern": "^[A-Z]{3}$"
                   }
                 },
                 "required": [
-                  "message"
-                ],
-                "type": "object"
+                  "amount",
+                  "currency"
+                ]
               },
-              "status": {
-                "description": "Account status. active: ready for use. pending_approval: seller reviewing (credit, legal). rejected: seller declined the account request. payment_required: credit limit reached or funds depleted. suspended: was active, now paused. closed: was active, now terminated.",
-                "enum": [
-                  "active",
-                  "pending_approval",
-                  "rejected",
-                  "payment_required",
-                  "suspended",
-                  "closed"
-                ],
-                "type": "string"
+              "errors": {
+                "type": "array",
+                "description": "Per-account errors (only present when action is 'failed')",
+                "items": {
+                  "$ref": "../core/error.json"
+                }
               },
               "warnings": {
+                "type": "array",
                 "description": "Non-fatal warnings about this account",
                 "items": {
                   "type": "string"
-                },
-                "type": "array"
+                }
+              },
+              "sandbox": {
+                "type": "boolean",
+                "description": "Whether this is a sandbox account, echoed from the request. Only present for implicit accounts."
               }
             },
             "required": [
@@ -298,17 +162,12 @@
               "action",
               "status"
             ],
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": true
+          }
         },
         "context": {
           "$ref": "../core/context.json"
         },
-        "dry_run": {
-          "description": "Whether this was a dry run (no actual changes made)",
-          "type": "boolean"
-        },
         "ext": {
           "$ref": "../core/ext.json"
         }
@@ -316,37 +175,28 @@
       "required": [
         "accounts"
       ],
-      "title": "SyncAccountsSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "Operation failed completely, no accounts were processed",
       "not": {
-        "anyOf": [
-          {
-            "required": [
-              "accounts"
-            ]
-          },
-          {
-            "required": [
-              "dry_run"
-            ]
-          }
+        "required": [
+          "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "SyncAccountsError",
+      "description": "Operation failed completely, no accounts were processed",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "description": "Operation-level errors (e.g., authentication failure, service unavailable)",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -355,10 +205,160 @@
       "required": [
         "errors"
       ],
-      "title": "SyncAccountsError",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "accounts"
+            ]
+          },
+          {
+            "required": [
+              "dry_run"
+            ]
+          }
+        ]
+      }
     }
   ],
-  "title": "Sync Accounts Response",
-  "type": "object"
+  "examples": [
+    {
+      "description": "Mixed results \u2014 one active, one pending approval",
+      "data": {
+        "accounts": [
+          {
+            "account_id": "acc_spark_001",
+            "brand": {
+              "domain": "nova-brands.com",
+              "brand_id": "spark"
+            },
+            "operator": "pinnacle-media.com",
+            "name": "Spark (via Pinnacle)",
+            "action": "created",
+            "status": "active",
+            "billing": "operator",
+            "account_scope": "operator_brand"
+          },
+          {
+            "account_id": "acc_glow_pending",
+            "brand": {
+              "domain": "nova-brands.com",
+              "brand_id": "glow"
+            },
+            "operator": "pinnacle-media.com",
+            "name": "Glow",
+            "action": "created",
+            "status": "pending_approval",
+            "billing": "operator",
+            "account_scope": "operator_brand",
+            "setup": {
+              "url": "https://seller.example.com/advertiser-onboard",
+              "message": "Complete advertiser registration and credit application",
+              "expires_at": "2026-03-10T00:00:00Z"
+            }
+          }
+        ]
+      }
+    },
+    {
+      "description": "Rejected account \u2014 no account_id assigned",
+      "data": {
+        "accounts": [
+          {
+            "brand": {
+              "domain": "acme-corp.com",
+              "brand_id": "clearance"
+            },
+            "operator": "acme-corp.com",
+            "action": "created",
+            "status": "rejected",
+            "warnings": [
+              "Account request declined: advertiser category not accepted on this platform."
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "description": "Unsupported billing \u2014 seller rejects the request",
+      "data": {
+        "accounts": [
+          {
+            "brand": {
+              "domain": "acme-corp.com"
+            },
+            "operator": "acme-corp.com",
+            "action": "failed",
+            "status": "rejected",
+            "errors": [
+              {
+                "code": "BILLING_NOT_SUPPORTED",
+                "message": "Operator billing is not supported. This seller only accepts agent billing."
+              }
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "description": "Advertiser billed directly with billing entity (bank details omitted in response)",
+      "data": {
+        "accounts": [
+          {
+            "account_id": "acc_acme_direct_bill",
+            "brand": {
+              "domain": "acme-corp.com"
+            },
+            "operator": "pinnacle-media.com",
+            "name": "Acme Corp (billed direct)",
+            "action": "created",
+            "status": "active",
+            "billing": "advertiser",
+            "billing_entity": {
+              "legal_name": "Acme Corporation GmbH",
+              "vat_id": "DE987654321",
+              "registration_number": "HRB 67890",
+              "address": {
+                "street": "Hauptstrasse 42",
+                "city": "Munich",
+                "postal_code": "80331",
+                "country": "DE"
+              },
+              "contacts": [
+                {
+                  "role": "billing",
+                  "name": "AP Department",
+                  "email": "billing@acme-corp.com"
+                }
+              ]
+            },
+            "account_scope": "operator_brand",
+            "payment_terms": "net_30"
+          }
+        ]
+      }
+    },
+    {
+      "description": "Unsupported payment terms \u2014 seller rejects the request",
+      "data": {
+        "accounts": [
+          {
+            "brand": {
+              "domain": "acme-corp.com"
+            },
+            "operator": "acme-corp.com",
+            "action": "failed",
+            "status": "rejected",
+            "errors": [
+              {
+                "code": "PAYMENT_TERMS_NOT_SUPPORTED",
+                "message": "Net-60 payment terms are not available. Omit payment_terms to accept this seller's default terms (net_30)."
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/account/sync-governance-request.json b/schemas/cache/account/sync-governance-request.json
new file mode 100644
index 000000000..1162d45c5
--- /dev/null
+++ b/schemas/cache/account/sync-governance-request.json
@@ -0,0 +1,168 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Governance Request",
+  "description": "Sync governance agent endpoints against specific accounts. The seller persists these governance agents and calls them for approval during media buy lifecycle events via check_governance. Uses replace semantics: each call replaces any previously synced agents on the specified accounts. The seller MUST verify that the authenticated agent has authority over each referenced account before persisting governance agents.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `account` gives resource-level dedup, but governance changes emit audit events and can trigger reapproval flows \u2014 this key prevents those side effects from firing twice on retry. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "accounts": {
+      "type": "array",
+      "description": "Per-account governance agent configuration. Each entry pairs an account reference with the governance agents for that account.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "account": {
+            "$ref": "../core/account-ref.json",
+            "description": "Account to sync governance agents for. Use account_id for explicit accounts or brand + operator for implicit accounts."
+          },
+          "governance_agents": {
+            "type": "array",
+            "description": "Governance agent endpoints for this account. The seller calls these agents via check_governance during media buy lifecycle events.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "url": {
+                  "type": "string",
+                  "format": "uri",
+                  "pattern": "^https://",
+                  "description": "Governance agent endpoint URL. Must use HTTPS."
+                },
+                "authentication": {
+                  "type": "object",
+                  "description": "Authentication the seller presents when calling this governance agent.",
+                  "properties": {
+                    "schemes": {
+                      "type": "array",
+                      "items": {
+                        "$ref": "../enums/auth-scheme.json"
+                      },
+                      "minItems": 1,
+                      "maxItems": 1
+                    },
+                    "credentials": {
+                      "type": "string",
+                      "description": "Authentication credential (e.g., Bearer token).",
+                      "minLength": 32
+                    }
+                  },
+                  "required": [
+                    "schemes",
+                    "credentials"
+                  ],
+                  "additionalProperties": false
+                },
+                "categories": {
+                  "type": "array",
+                  "items": {
+                    "type": "string",
+                    "maxLength": 64,
+                    "pattern": "^[a-z][a-z0-9_]*$"
+                  },
+                  "description": "Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+                  "maxItems": 20
+                }
+              },
+              "required": [
+                "url",
+                "authentication"
+              ],
+              "additionalProperties": false
+            },
+            "minItems": 1,
+            "maxItems": 10
+          }
+        },
+        "required": [
+          "account",
+          "governance_agents"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1,
+      "maxItems": 100
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "accounts"
+  ],
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Sync governance agents on explicit accounts (by account_id)",
+      "data": {
+        "idempotency_key": "e1b3a6c8-5678-489a-bcde-f01234567891",
+        "accounts": [
+          {
+            "account": {
+              "account_id": "acct-social-001"
+            },
+            "governance_agents": [
+              {
+                "url": "https://governance.pinnacle-media.com/budget",
+                "authentication": {
+                  "schemes": [
+                    "Bearer"
+                  ],
+                  "credentials": "gov-token-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+                },
+                "categories": [
+                  "budget_authority"
+                ]
+              }
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "description": "Sync governance agents on implicit accounts (by brand + operator)",
+      "data": {
+        "idempotency_key": "f2c4b7d9-6789-489b-cdef-012345678902",
+        "accounts": [
+          {
+            "account": {
+              "brand": {
+                "domain": "nova-brands.com",
+                "brand_id": "spark"
+              },
+              "operator": "pinnacle-media.com"
+            },
+            "governance_agents": [
+              {
+                "url": "https://governance.pinnacle-media.com/compliance",
+                "authentication": {
+                  "schemes": [
+                    "Bearer"
+                  ],
+                  "credentials": "gov-token-yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+                },
+                "categories": [
+                  "geo_compliance"
+                ]
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/account/sync-governance-response.json b/schemas/cache/account/sync-governance-response.json
new file mode 100644
index 000000000..7e20d597d
--- /dev/null
+++ b/schemas/cache/account/sync-governance-response.json
@@ -0,0 +1,192 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Governance Response",
+  "description": "Response from governance agent sync. Returns per-account results confirming sync, or operation-level errors on complete failure.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "SyncGovernanceSuccess",
+      "description": "Sync processed \u2014 individual accounts may have errors",
+      "type": "object",
+      "properties": {
+        "accounts": {
+          "type": "array",
+          "description": "Per-account sync results",
+          "items": {
+            "type": "object",
+            "properties": {
+              "account": {
+                "$ref": "../core/account-ref.json",
+                "description": "Account reference, echoed from request"
+              },
+              "status": {
+                "type": "string",
+                "enum": [
+                  "synced",
+                  "failed"
+                ],
+                "description": "Sync result. synced: governance agents persisted. failed: could not complete (see errors)."
+              },
+              "governance_agents": {
+                "type": "array",
+                "description": "Governance agents now synced on this account. Reflects the persisted state after sync.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "pattern": "^https://",
+                      "description": "Governance agent endpoint URL."
+                    },
+                    "categories": {
+                      "type": "array",
+                      "items": {
+                        "type": "string",
+                        "maxLength": 64,
+                        "pattern": "^[a-z][a-z0-9_]*$"
+                      },
+                      "description": "Governance categories this agent handles.",
+                      "maxItems": 20
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": false
+                }
+              },
+              "errors": {
+                "type": "array",
+                "description": "Per-account errors (only present when status is 'failed')",
+                "items": {
+                  "$ref": "../core/error.json"
+                }
+              }
+            },
+            "required": [
+              "account",
+              "status"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "accounts"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "SyncGovernanceError",
+      "description": "Operation failed completely, no accounts were processed",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors (e.g., authentication failure, service unavailable)",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "accounts"
+        ]
+      }
+    }
+  ],
+  "examples": [
+    {
+      "description": "Governance agents synced on two accounts",
+      "data": {
+        "accounts": [
+          {
+            "account": {
+              "account_id": "acct-social-001"
+            },
+            "status": "synced",
+            "governance_agents": [
+              {
+                "url": "https://governance.pinnacle-media.com/budget",
+                "categories": [
+                  "budget_authority"
+                ]
+              }
+            ]
+          },
+          {
+            "account": {
+              "account_id": "acct-social-002"
+            },
+            "status": "synced",
+            "governance_agents": [
+              {
+                "url": "https://governance.pinnacle-media.com/compliance",
+                "categories": [
+                  "geo_compliance"
+                ]
+              }
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "description": "Partial failure \u2014 one account not found",
+      "data": {
+        "accounts": [
+          {
+            "account": {
+              "account_id": "acct-social-001"
+            },
+            "status": "synced",
+            "governance_agents": [
+              {
+                "url": "https://governance.pinnacle-media.com/budget",
+                "categories": [
+                  "budget_authority"
+                ]
+              }
+            ]
+          },
+          {
+            "account": {
+              "account_id": "acct-unknown"
+            },
+            "status": "failed",
+            "errors": [
+              {
+                "code": "ACCOUNT_NOT_FOUND",
+                "message": "Account 'acct-unknown' does not exist or is not accessible to the authenticated agent."
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/adagents.json b/schemas/cache/adagents.json
index ecbd6def0..5d5ee763c 100644
--- a/schemas/cache/adagents.json
+++ b/schemas/cache/adagents.json
@@ -1,574 +1,258 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "AdCP Agents Authorization",
   "description": "Declaration of authorized agents for advertising inventory and data signals. Hosted at /.well-known/adagents.json on publisher domains (for properties) or data provider domains (for signals). Can either contain the full structure inline or reference an authoritative URL.",
-  "examples": [
-    {
-      "$schema": "/schemas/3.0.0-rc.3/adagents.json",
-      "authoritative_location": "https://cdn.example.com/adagents/v2/adagents.json",
-      "last_updated": "2025-01-15T10:00:00Z"
-    },
+  "oneOf": [
     {
-      "$schema": "/schemas/3.0.0-rc.3/adagents.json",
-      "authorized_agents": [
-        {
-          "authorization_type": "property_tags",
-          "authorized_for": "Official sales agent",
-          "countries": [
-            "US",
-            "CA"
-          ],
-          "delegation_type": "direct",
-          "effective_from": "2025-01-01T00:00:00Z",
-          "exclusive": true,
-          "placement_ids": [
-            "homepage_banner"
-          ],
-          "property_tags": [
-            "all"
-          ],
-          "url": "https://agent.example.com"
-        }
-      ],
-      "last_updated": "2025-01-10T12:00:00Z",
-      "placement_tags": {
-        "display": {
-          "description": "Standard display placements",
-          "name": "Display"
+      "type": "object",
+      "description": "URL reference variant - points to the authoritative location of the adagents.json file",
+      "properties": {
+        "$schema": {
+          "type": "string",
+          "description": "JSON Schema identifier for this adagents.json file"
         },
-        "homepage": {
-          "description": "Placements that render on the homepage",
-          "name": "Homepage"
+        "authoritative_location": {
+          "type": "string",
+          "format": "uri",
+          "pattern": "^https://",
+          "description": "HTTPS URL of the authoritative adagents.json file. When present, this file is a reference and the authoritative location contains the actual agent authorization data. Because one deploy can change authorization across every publisher in the network, validators MUST cap response size, refuse redirects on the fetch, enforce short timeouts, and serve the previously cached file on transient 5xx. See docs/governance/property/managed-networks#security-considerations."
         },
-        "premium": {
-          "description": "Premium monetization placements",
-          "name": "Premium"
+        "last_updated": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp indicating when this reference was last updated"
         }
       },
-      "placements": [
-        {
-          "format_ids": [
-            {
-              "agent_url": "https://creative.example.com",
-              "id": "display_728x90"
-            }
-          ],
-          "name": "Homepage Banner",
-          "placement_id": "homepage_banner",
-          "property_ids": [
-            "example_site"
-          ],
-          "tags": [
-            "homepage",
-            "display",
-            "premium"
-          ]
-        }
-      ],
-      "properties": [
-        {
-          "identifiers": [
-            {
-              "type": "domain",
-              "value": "example.com"
-            }
-          ],
-          "name": "Example Site",
-          "property_id": "example_site",
-          "property_type": "website",
-          "publisher_domain": "example.com"
-        }
+      "required": [
+        "authoritative_location"
       ],
-      "tags": {
-        "all": {
-          "description": "All properties in this file",
-          "name": "All Properties"
-        }
-      }
+      "additionalProperties": true
     },
     {
-      "$schema": "/schemas/3.0.0-rc.3/adagents.json",
-      "authorized_agents": [
-        {
-          "authorization_type": "property_tags",
-          "authorized_for": "All Meta properties",
-          "property_tags": [
-            "meta_network"
-          ],
-          "url": "https://meta-ads.com"
-        }
-      ],
-      "contact": {
-        "domain": "meta.com",
-        "email": "adops@meta.com",
-        "name": "Meta Advertising Operations",
-        "privacy_policy_url": "https://www.meta.com/privacy/policy",
-        "seller_id": "pub-meta-12345",
-        "tag_id": "12345"
-      },
-      "last_updated": "2025-01-10T15:30:00Z",
-      "properties": [
-        {
-          "identifiers": [
-            {
-              "type": "ios_bundle",
-              "value": "com.burbn.instagram"
-            },
-            {
-              "type": "android_package",
-              "value": "com.instagram.android"
-            }
-          ],
-          "name": "Instagram",
-          "property_type": "mobile_app",
-          "publisher_domain": "instagram.com",
-          "supported_channels": [
-            "social",
-            "display",
-            "olv"
-          ],
-          "tags": [
-            "meta_network",
-            "social_media"
-          ]
+      "type": "object",
+      "description": "Inline structure variant - contains full agent authorization data",
+      "properties": {
+        "$schema": {
+          "type": "string",
+          "description": "JSON Schema identifier for this adagents.json file"
         },
-        {
-          "identifiers": [
-            {
-              "type": "ios_bundle",
-              "value": "com.facebook.Facebook"
+        "contact": {
+          "type": "object",
+          "description": "Contact information for the entity managing this adagents.json file (may be publisher or third-party operator)",
+          "properties": {
+            "name": {
+              "type": "string",
+              "description": "Name of the entity managing this file (e.g., 'Meta Advertising Operations', 'Clear Channel Digital')",
+              "minLength": 1,
+              "maxLength": 255
             },
-            {
-              "type": "android_package",
-              "value": "com.facebook.katana"
-            }
-          ],
-          "name": "Facebook",
-          "property_type": "mobile_app",
-          "publisher_domain": "facebook.com",
-          "supported_channels": [
-            "social",
-            "display",
-            "olv"
-          ],
-          "tags": [
-            "meta_network",
-            "social_media"
-          ]
-        },
-        {
-          "identifiers": [
-            {
-              "type": "ios_bundle",
-              "value": "net.whatsapp.WhatsApp"
+            "email": {
+              "type": "string",
+              "format": "email",
+              "description": "Contact email for questions or issues with this authorization file",
+              "minLength": 1,
+              "maxLength": 255
             },
-            {
-              "type": "android_package",
-              "value": "com.whatsapp"
+            "domain": {
+              "type": "string",
+              "description": "Primary domain of the entity managing this file",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "seller_id": {
+              "type": "string",
+              "description": "Seller ID from IAB Tech Lab sellers.json (if applicable)",
+              "minLength": 1,
+              "maxLength": 255
+            },
+            "tag_id": {
+              "type": "string",
+              "description": "TAG Certified Against Fraud ID for verification (if applicable)",
+              "minLength": 1,
+              "maxLength": 100
+            },
+            "privacy_policy_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL to the entity's privacy policy. Used for consumer consent flows when interacting with this sales agent."
             }
+          },
+          "required": [
+            "name"
           ],
-          "name": "WhatsApp",
-          "property_type": "mobile_app",
-          "publisher_domain": "whatsapp.com",
-          "supported_channels": [
-            "social",
-            "display"
-          ],
-          "tags": [
-            "meta_network",
-            "messaging"
-          ]
-        }
-      ],
-      "tags": {
-        "messaging": {
-          "description": "Messaging and communication apps",
-          "name": "Messaging Apps"
+          "additionalProperties": true
         },
-        "meta_network": {
-          "description": "All Meta-owned properties",
-          "name": "Meta Network"
+        "properties": {
+          "type": "array",
+          "description": "Array of all properties covered by this adagents.json file. Defines the canonical property list that authorized agents reference.",
+          "items": {
+            "$ref": "core/property.json"
+          },
+          "minItems": 1
         },
-        "social_media": {
-          "description": "Social networking applications",
-          "name": "Social Media Apps"
-        }
-      }
-    },
-    {
-      "$schema": "/schemas/3.0.0-rc.3/adagents.json",
-      "authorized_agents": [
-        {
-          "authorization_type": "property_tags",
-          "authorized_for": "Tumblr corporate properties only",
-          "property_tags": [
-            "corporate"
-          ],
-          "url": "https://tumblr-sales.com"
-        }
-      ],
-      "contact": {
-        "name": "Tumblr Advertising"
-      },
-      "last_updated": "2025-01-10T16:00:00Z",
-      "properties": [
-        {
-          "identifiers": [
-            {
-              "type": "domain",
-              "value": "tumblr.com"
-            }
-          ],
-          "name": "Tumblr Corporate",
-          "property_type": "website",
-          "publisher_domain": "tumblr.com",
-          "tags": [
-            "corporate"
-          ]
-        }
-      ],
-      "tags": {
-        "corporate": {
-          "description": "Tumblr-owned corporate properties (not user blogs)",
-          "name": "Corporate Properties"
-        }
-      }
-    },
-    {
-      "$schema": "/schemas/3.0.0-rc.3/adagents.json",
-      "authorized_agents": [
-        {
-          "authorization_type": "publisher_properties",
-          "authorized_for": "CNN CTV properties via publisher authorization",
-          "publisher_properties": [
-            {
-              "property_ids": [
-                "cnn_ctv_app"
-              ],
-              "publisher_domain": "cnn.com",
-              "selection_type": "by_id"
-            }
-          ],
-          "url": "https://agent.example/api"
+        "collections": {
+          "type": "array",
+          "description": "Collections produced or distributed by this publisher. Declares the content programs whose inventory is sold through authorized agents. Products in get_products responses reference these collections by collection_id.",
+          "items": {
+            "$ref": "core/collection.json"
+          }
         },
-        {
-          "authorization_type": "publisher_properties",
-          "authorized_for": "All CTV properties from multiple publishers",
-          "publisher_properties": [
-            {
-              "property_tags": [
-                "ctv"
-              ],
-              "publisher_domain": "cnn.com",
-              "selection_type": "by_tag"
-            },
-            {
-              "property_tags": [
-                "ctv"
-              ],
-              "publisher_domain": "espn.com",
-              "selection_type": "by_tag"
-            }
-          ],
-          "url": "https://agent.example/api"
-        }
-      ],
-      "contact": {
-        "domain": "agent.example",
-        "email": "sales@agent.example",
-        "name": "Example Third-Party Sales Agent"
-      },
-      "last_updated": "2025-01-10T17:00:00Z"
-    },
-    {
-      "$schema": "/schemas/3.0.0-rc.3/adagents.json",
-      "authorized_agents": [
-        {
-          "authorization_type": "property_tags",
-          "authorized_for": "All news properties",
-          "property_tags": [
-            "news"
-          ],
-          "url": "https://sales.news.example.com"
-        }
-      ],
-      "contact": {
-        "domain": "news.example.com",
-        "email": "adops@news.example.com",
-        "name": "Premium News Publisher"
-      },
-      "last_updated": "2025-01-10T18:00:00Z",
-      "properties": [
-        {
-          "identifiers": [
-            {
-              "type": "domain",
-              "value": "news.example.com"
-            }
-          ],
-          "name": "News Example",
-          "property_type": "website",
-          "publisher_domain": "news.example.com",
-          "tags": [
-            "premium",
-            "news"
-          ]
-        }
-      ],
-      "property_features": [
-        {
-          "features": [
-            "carbon_score",
-            "sustainability_grade"
-          ],
-          "name": "Scope3",
-          "publisher_id": "pub_news_12345",
-          "url": "https://api.scope3.com"
-        },
-        {
-          "features": [
-            "tag_certified_against_fraud",
-            "tag_brand_safety_certified"
-          ],
-          "name": "TAG",
-          "url": "https://api.tagtoday.net"
-        },
-        {
-          "features": [
-            "gdpr_compliant",
-            "tcf_registered",
-            "ccpa_compliant"
-          ],
-          "name": "OneTrust",
-          "publisher_id": "ot_news_67890",
-          "url": "https://api.onetrust.com"
-        }
-      ],
-      "tags": {
-        "news": {
-          "description": "News and journalism content",
-          "name": "News Properties"
-        },
-        "premium": {
-          "description": "High-quality, brand-safe properties",
-          "name": "Premium Properties"
-        }
-      }
-    },
-    {
-      "$schema": "/schemas/3.0.0-rc.3/adagents.json",
-      "authorized_agents": [
-        {
-          "authorization_type": "signal_tags",
-          "authorized_for": "All Polk automotive signals via LiveRamp",
-          "signal_tags": [
-            "automotive"
-          ],
-          "url": "https://liveramp.com/.well-known/adcp/signals"
-        },
-        {
-          "authorization_type": "signal_ids",
-          "authorized_for": "Polk premium signals only",
-          "signal_ids": [
-            "likely_tesla_buyers"
-          ],
-          "url": "https://the-trade-desk.com/.well-known/adcp/signals"
-        }
-      ],
-      "contact": {
-        "domain": "polk.com",
-        "email": "partnerships@polk.com",
-        "name": "Polk Automotive Data"
-      },
-      "last_updated": "2025-01-15T10:00:00Z",
-      "signal_tags": {
-        "automotive": {
-          "description": "Vehicle-related audience segments",
-          "name": "Automotive Signals"
-        },
-        "premium": {
-          "description": "High-value premium audience segments",
-          "name": "Premium Signals"
-        }
-      },
-      "signals": [
-        {
-          "category": "purchase_intent",
-          "description": "Consumers modeled as likely to purchase a Tesla in the next 12 months based on vehicle registration, financial, and behavioral data",
-          "id": "likely_tesla_buyers",
-          "name": "Likely Tesla Buyers",
-          "tags": [
-            "automotive",
-            "premium"
-          ],
-          "value_type": "binary"
-        },
-        {
-          "allowed_values": [
-            "tesla",
-            "bmw",
-            "mercedes",
-            "audi",
-            "lexus",
-            "other_luxury",
-            "non_luxury"
-          ],
-          "category": "ownership",
-          "description": "Current vehicle make owned by the consumer",
-          "id": "vehicle_ownership",
-          "name": "Current Vehicle Ownership",
-          "tags": [
-            "automotive"
-          ],
-          "value_type": "categorical"
-        },
-        {
-          "category": "purchase_intent",
-          "description": "Likelihood score of purchasing any new vehicle in the next 6 months",
-          "id": "purchase_propensity",
-          "name": "Auto Purchase Propensity",
-          "range": {
-            "max": 1,
-            "min": 0,
-            "unit": "score"
+        "placements": {
+          "type": "array",
+          "description": "Canonical placement definitions for properties in this file. Products SHOULD reuse these placement_id values when exposing inventory in get_products, and authorized agents can scope authorization to these placement IDs.",
+          "items": {
+            "$ref": "core/placement-definition.json"
           },
-          "tags": [
-            "automotive"
-          ],
-          "value_type": "numeric"
-        }
-      ]
-    }
-  ],
-  "oneOf": [
-    {
-      "additionalProperties": true,
-      "description": "URL reference variant - points to the authoritative location of the adagents.json file",
-      "properties": {
-        "$schema": {
-          "description": "JSON Schema identifier for this adagents.json file",
-          "type": "string"
+          "minItems": 1
         },
-        "authoritative_location": {
-          "description": "HTTPS URL of the authoritative adagents.json file. When present, this file is a reference and the authoritative location contains the actual agent authorization data.",
-          "format": "uri",
-          "pattern": "^https://",
-          "type": "string"
+        "tags": {
+          "type": "object",
+          "description": "Metadata for each tag referenced by properties. Provides human-readable context for property tag values.",
+          "additionalProperties": {
+            "type": "object",
+            "properties": {
+              "name": {
+                "type": "string",
+                "description": "Human-readable name for this tag"
+              },
+              "description": {
+                "type": "string",
+                "description": "Description of what this tag represents"
+              }
+            },
+            "required": [
+              "name",
+              "description"
+            ],
+            "additionalProperties": true
+          }
         },
-        "last_updated": {
-          "description": "ISO 8601 timestamp indicating when this reference was last updated",
-          "format": "date-time",
-          "type": "string"
-        }
-      },
-      "required": [
-        "authoritative_location"
-      ],
-      "type": "object"
-    },
-    {
-      "additionalProperties": true,
-      "description": "Inline structure variant - contains full agent authorization data",
-      "properties": {
-        "$schema": {
-          "description": "JSON Schema identifier for this adagents.json file",
-          "type": "string"
+        "placement_tags": {
+          "type": "object",
+          "description": "Metadata for each tag referenced by placements. Provides human-readable context for publisher-defined placement tag values used in grouping and authorization.",
+          "additionalProperties": {
+            "type": "object",
+            "properties": {
+              "name": {
+                "type": "string",
+                "description": "Human-readable name for this placement tag"
+              },
+              "description": {
+                "type": "string",
+                "description": "Description of what this placement tag represents"
+              }
+            },
+            "required": [
+              "name",
+              "description"
+            ],
+            "additionalProperties": true
+          }
         },
         "authorized_agents": {
+          "type": "array",
           "description": "Array of sales agents authorized to make inventory from this file available to buyers. Authorization can be scoped to specific properties, collections, countries, and time windows, with optional delegation metadata indicating whether the path is direct, delegated, or network-mediated.",
           "items": {
             "oneOf": [
               {
-                "additionalProperties": true,
+                "type": "object",
                 "properties": {
-                  "authorization_type": {
-                    "const": "property_ids",
-                    "description": "Discriminator indicating authorization by specific property IDs",
-                    "type": "string"
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "The authorized agent's API endpoint URL"
                   },
                   "authorized_for": {
+                    "type": "string",
                     "description": "Human-readable description of what this agent is authorized to sell",
-                    "maxLength": 500,
                     "minLength": 1,
-                    "type": "string"
+                    "maxLength": 500
+                  },
+                  "authorization_type": {
+                    "type": "string",
+                    "const": "property_ids",
+                    "description": "Discriminator indicating authorization by specific property IDs"
+                  },
+                  "property_ids": {
+                    "type": "array",
+                    "description": "Property IDs this agent is authorized for. Resolved against the top-level properties array in this file",
+                    "items": {
+                      "$ref": "core/property-id.json"
+                    },
+                    "minItems": 1
                   },
                   "collections": {
+                    "type": "array",
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
                       "$ref": "core/collection-selector.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "countries": {
-                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
+                  "placement_ids": {
+                    "type": "array",
+                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
                     "items": {
-                      "pattern": "^[A-Z]{2}$",
                       "type": "string"
                     },
-                    "minItems": 1,
+                    "minItems": 1
+                  },
+                  "placement_tags": {
                     "type": "array",
+                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1,
                     "uniqueItems": true
                   },
                   "delegation_type": {
-                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint.",
+                    "type": "string",
                     "enum": [
                       "direct",
                       "delegated",
                       "ad_network"
                     ],
-                    "type": "string"
-                  },
-                  "effective_from": {
-                    "description": "Optional start time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
-                  },
-                  "effective_until": {
-                    "description": "Optional end time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
+                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
                   },
                   "exclusive": {
-                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory.",
-                    "type": "boolean"
-                  },
-                  "placement_ids": {
-                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
-                    "items": {
-                      "type": "string"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                    "type": "boolean",
+                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
                   },
-                  "placement_tags": {
-                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                  "countries": {
+                    "type": "array",
+                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
                     "items": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
                     },
                     "minItems": 1,
-                    "type": "array",
                     "uniqueItems": true
                   },
-                  "property_ids": {
-                    "description": "Property IDs this agent is authorized for. Resolved against the top-level properties array in this file",
-                    "items": {
-                      "$ref": "core/property-id.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                  "effective_from": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional start time for this authorization window."
+                  },
+                  "effective_until": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional end time for this authorization window."
                   },
                   "signing_keys": {
+                    "type": "array",
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
                       "$ref": "core/agent-signing-key.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "url": {
-                    "description": "The authorized agent's API endpoint URL",
-                    "format": "uri",
-                    "type": "string"
+                  "encryption_keys": {
+                    "type": "array",
+                    "description": "X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base \u2014 read replicas encrypt with this public key, only the master can decrypt.",
+                    "items": {
+                      "$ref": "core/agent-encryption-key.json"
+                    },
+                    "minItems": 1
                   }
                 },
                 "required": [
@@ -577,100 +261,108 @@
                   "authorization_type",
                   "property_ids"
                 ],
-                "type": "object"
+                "additionalProperties": true
               },
               {
-                "additionalProperties": true,
+                "type": "object",
                 "properties": {
-                  "authorization_type": {
-                    "const": "property_tags",
-                    "description": "Discriminator indicating authorization by property tags",
-                    "type": "string"
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "The authorized agent's API endpoint URL"
                   },
                   "authorized_for": {
+                    "type": "string",
                     "description": "Human-readable description of what this agent is authorized to sell",
-                    "maxLength": 500,
                     "minLength": 1,
-                    "type": "string"
+                    "maxLength": 500
+                  },
+                  "authorization_type": {
+                    "type": "string",
+                    "const": "property_tags",
+                    "description": "Discriminator indicating authorization by property tags"
+                  },
+                  "property_tags": {
+                    "type": "array",
+                    "description": "Tags identifying which properties this agent is authorized for. Resolved against the top-level properties array in this file using tag matching",
+                    "items": {
+                      "$ref": "core/property-tag.json"
+                    },
+                    "minItems": 1
                   },
                   "collections": {
+                    "type": "array",
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
                       "$ref": "core/collection-selector.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "countries": {
-                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
+                  "placement_ids": {
+                    "type": "array",
+                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
                     "items": {
-                      "pattern": "^[A-Z]{2}$",
                       "type": "string"
                     },
-                    "minItems": 1,
+                    "minItems": 1
+                  },
+                  "placement_tags": {
                     "type": "array",
+                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1,
                     "uniqueItems": true
                   },
                   "delegation_type": {
-                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint.",
+                    "type": "string",
                     "enum": [
                       "direct",
                       "delegated",
                       "ad_network"
                     ],
-                    "type": "string"
-                  },
-                  "effective_from": {
-                    "description": "Optional start time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
-                  },
-                  "effective_until": {
-                    "description": "Optional end time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
+                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
                   },
                   "exclusive": {
-                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory.",
-                    "type": "boolean"
-                  },
-                  "placement_ids": {
-                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
-                    "items": {
-                      "type": "string"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                    "type": "boolean",
+                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
                   },
-                  "placement_tags": {
-                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                  "countries": {
+                    "type": "array",
+                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
                     "items": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
                     },
                     "minItems": 1,
-                    "type": "array",
                     "uniqueItems": true
                   },
-                  "property_tags": {
-                    "description": "Tags identifying which properties this agent is authorized for. Resolved against the top-level properties array in this file using tag matching",
-                    "items": {
-                      "$ref": "core/property-tag.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                  "effective_from": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional start time for this authorization window."
+                  },
+                  "effective_until": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional end time for this authorization window."
                   },
                   "signing_keys": {
+                    "type": "array",
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
                       "$ref": "core/agent-signing-key.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "url": {
-                    "description": "The authorized agent's API endpoint URL",
-                    "format": "uri",
-                    "type": "string"
+                  "encryption_keys": {
+                    "type": "array",
+                    "description": "X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base \u2014 read replicas encrypt with this public key, only the master can decrypt.",
+                    "items": {
+                      "$ref": "core/agent-encryption-key.json"
+                    },
+                    "minItems": 1
                   }
                 },
                 "required": [
@@ -679,100 +371,108 @@
                   "authorization_type",
                   "property_tags"
                 ],
-                "type": "object"
+                "additionalProperties": true
               },
               {
-                "additionalProperties": true,
+                "type": "object",
                 "properties": {
-                  "authorization_type": {
-                    "const": "inline_properties",
-                    "description": "Discriminator indicating authorization by inline property definitions",
-                    "type": "string"
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "The authorized agent's API endpoint URL"
                   },
                   "authorized_for": {
+                    "type": "string",
                     "description": "Human-readable description of what this agent is authorized to sell",
-                    "maxLength": 500,
                     "minLength": 1,
-                    "type": "string"
+                    "maxLength": 500
+                  },
+                  "authorization_type": {
+                    "type": "string",
+                    "const": "inline_properties",
+                    "description": "Discriminator indicating authorization by inline property definitions"
+                  },
+                  "properties": {
+                    "type": "array",
+                    "description": "Specific properties this agent is authorized for (alternative to property_ids/property_tags)",
+                    "items": {
+                      "$ref": "core/property.json"
+                    },
+                    "minItems": 1
                   },
                   "collections": {
+                    "type": "array",
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
                       "$ref": "core/collection-selector.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "countries": {
-                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
+                  "placement_ids": {
+                    "type": "array",
+                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
                     "items": {
-                      "pattern": "^[A-Z]{2}$",
                       "type": "string"
                     },
-                    "minItems": 1,
+                    "minItems": 1
+                  },
+                  "placement_tags": {
                     "type": "array",
+                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1,
                     "uniqueItems": true
                   },
                   "delegation_type": {
-                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint.",
+                    "type": "string",
                     "enum": [
                       "direct",
                       "delegated",
                       "ad_network"
                     ],
-                    "type": "string"
-                  },
-                  "effective_from": {
-                    "description": "Optional start time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
-                  },
-                  "effective_until": {
-                    "description": "Optional end time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
+                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
                   },
                   "exclusive": {
-                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory.",
-                    "type": "boolean"
-                  },
-                  "placement_ids": {
-                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
-                    "items": {
-                      "type": "string"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                    "type": "boolean",
+                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
                   },
-                  "placement_tags": {
-                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                  "countries": {
+                    "type": "array",
+                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
                     "items": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
                     },
                     "minItems": 1,
-                    "type": "array",
                     "uniqueItems": true
                   },
-                  "properties": {
-                    "description": "Specific properties this agent is authorized for (alternative to property_ids/property_tags)",
-                    "items": {
-                      "$ref": "core/property.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                  "effective_from": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional start time for this authorization window."
+                  },
+                  "effective_until": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional end time for this authorization window."
                   },
                   "signing_keys": {
+                    "type": "array",
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
                       "$ref": "core/agent-signing-key.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "url": {
-                    "description": "The authorized agent's API endpoint URL",
-                    "format": "uri",
-                    "type": "string"
+                  "encryption_keys": {
+                    "type": "array",
+                    "description": "X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base \u2014 read replicas encrypt with this public key, only the master can decrypt.",
+                    "items": {
+                      "$ref": "core/agent-encryption-key.json"
+                    },
+                    "minItems": 1
                   }
                 },
                 "required": [
@@ -781,100 +481,108 @@
                   "authorization_type",
                   "properties"
                 ],
-                "type": "object"
+                "additionalProperties": true
               },
               {
-                "additionalProperties": true,
+                "type": "object",
                 "properties": {
-                  "authorization_type": {
-                    "const": "publisher_properties",
-                    "description": "Discriminator indicating authorization for properties from other publisher domains",
-                    "type": "string"
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "The authorized agent's API endpoint URL"
                   },
                   "authorized_for": {
+                    "type": "string",
                     "description": "Human-readable description of what this agent is authorized to sell",
-                    "maxLength": 500,
                     "minLength": 1,
-                    "type": "string"
+                    "maxLength": 500
+                  },
+                  "authorization_type": {
+                    "type": "string",
+                    "const": "publisher_properties",
+                    "description": "Discriminator indicating authorization for properties from other publisher domains"
+                  },
+                  "publisher_properties": {
+                    "type": "array",
+                    "description": "Properties from other publisher domains this agent is authorized for. Each entry specifies a publisher domain and which of their properties this agent can sell",
+                    "items": {
+                      "$ref": "core/publisher-property-selector.json"
+                    },
+                    "minItems": 1
                   },
                   "collections": {
+                    "type": "array",
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
                       "$ref": "core/collection-selector.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "countries": {
-                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
+                  "placement_ids": {
+                    "type": "array",
+                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
                     "items": {
-                      "pattern": "^[A-Z]{2}$",
                       "type": "string"
                     },
-                    "minItems": 1,
+                    "minItems": 1
+                  },
+                  "placement_tags": {
                     "type": "array",
+                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1,
                     "uniqueItems": true
                   },
                   "delegation_type": {
-                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint.",
+                    "type": "string",
                     "enum": [
                       "direct",
                       "delegated",
                       "ad_network"
                     ],
-                    "type": "string"
-                  },
-                  "effective_from": {
-                    "description": "Optional start time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
-                  },
-                  "effective_until": {
-                    "description": "Optional end time for this authorization window.",
-                    "format": "date-time",
-                    "type": "string"
+                    "description": "Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
                   },
                   "exclusive": {
-                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory.",
-                    "type": "boolean"
-                  },
-                  "placement_ids": {
-                    "description": "Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.",
-                    "items": {
-                      "type": "string"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                    "type": "boolean",
+                    "description": "Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
                   },
-                  "placement_tags": {
-                    "description": "Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.",
+                  "countries": {
+                    "type": "array",
+                    "description": "Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.",
                     "items": {
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
                     },
                     "minItems": 1,
-                    "type": "array",
                     "uniqueItems": true
                   },
-                  "publisher_properties": {
-                    "description": "Properties from other publisher domains this agent is authorized for. Each entry specifies a publisher domain and which of their properties this agent can sell",
-                    "items": {
-                      "$ref": "core/publisher-property-selector.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                  "effective_from": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional start time for this authorization window."
+                  },
+                  "effective_until": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Optional end time for this authorization window."
                   },
                   "signing_keys": {
+                    "type": "array",
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
                       "$ref": "core/agent-signing-key.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "url": {
-                    "description": "The authorized agent's API endpoint URL",
-                    "format": "uri",
-                    "type": "string"
+                  "encryption_keys": {
+                    "type": "array",
+                    "description": "X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base \u2014 read replicas encrypt with this public key, only the master can decrypt.",
+                    "items": {
+                      "$ref": "core/agent-encryption-key.json"
+                    },
+                    "minItems": 1
                   }
                 },
                 "required": [
@@ -883,44 +591,52 @@
                   "authorization_type",
                   "publisher_properties"
                 ],
-                "type": "object"
+                "additionalProperties": true
               },
               {
-                "additionalProperties": true,
+                "type": "object",
                 "description": "Authorization for signals by specific signal IDs",
                 "properties": {
-                  "authorization_type": {
-                    "const": "signal_ids",
-                    "description": "Discriminator indicating authorization by specific signal IDs",
-                    "type": "string"
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "The authorized signals agent's API endpoint URL"
                   },
                   "authorized_for": {
+                    "type": "string",
                     "description": "Human-readable description of what signals this agent is authorized to resell",
-                    "maxLength": 500,
                     "minLength": 1,
-                    "type": "string"
+                    "maxLength": 500
+                  },
+                  "authorization_type": {
+                    "type": "string",
+                    "const": "signal_ids",
+                    "description": "Discriminator indicating authorization by specific signal IDs"
                   },
                   "signal_ids": {
+                    "type": "array",
                     "description": "Signal IDs this agent is authorized to resell. Resolved against the top-level signals array in this file",
                     "items": {
-                      "pattern": "^[a-zA-Z0-9_-]+$",
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
                   "signing_keys": {
+                    "type": "array",
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
                       "$ref": "core/agent-signing-key.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "url": {
-                    "description": "The authorized signals agent's API endpoint URL",
-                    "format": "uri",
-                    "type": "string"
+                  "encryption_keys": {
+                    "type": "array",
+                    "description": "X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base \u2014 read replicas encrypt with this public key, only the master can decrypt.",
+                    "items": {
+                      "$ref": "core/agent-encryption-key.json"
+                    },
+                    "minItems": 1
                   }
                 },
                 "required": [
@@ -929,44 +645,52 @@
                   "authorization_type",
                   "signal_ids"
                 ],
-                "type": "object"
+                "additionalProperties": true
               },
               {
-                "additionalProperties": true,
+                "type": "object",
                 "description": "Authorization for signals by tag membership",
                 "properties": {
-                  "authorization_type": {
-                    "const": "signal_tags",
-                    "description": "Discriminator indicating authorization by signal tags",
-                    "type": "string"
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "The authorized signals agent's API endpoint URL"
                   },
                   "authorized_for": {
+                    "type": "string",
                     "description": "Human-readable description of what signals this agent is authorized to resell",
-                    "maxLength": 500,
                     "minLength": 1,
-                    "type": "string"
+                    "maxLength": 500
+                  },
+                  "authorization_type": {
+                    "type": "string",
+                    "const": "signal_tags",
+                    "description": "Discriminator indicating authorization by signal tags"
                   },
                   "signal_tags": {
+                    "type": "array",
                     "description": "Signal tags this agent is authorized for. Agent can resell all signals with these tags",
                     "items": {
-                      "pattern": "^[a-z0-9_-]+$",
-                      "type": "string"
+                      "type": "string",
+                      "pattern": "^[a-z0-9_-]+$"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
                   "signing_keys": {
+                    "type": "array",
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
                       "$ref": "core/agent-signing-key.json"
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
                   },
-                  "url": {
-                    "description": "The authorized signals agent's API endpoint URL",
-                    "format": "uri",
-                    "type": "string"
+                  "encryption_keys": {
+                    "type": "array",
+                    "description": "X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base \u2014 read replicas encrypt with this public key, only the master can decrypt.",
+                    "items": {
+                      "$ref": "core/agent-encryption-key.json"
+                    },
+                    "minItems": 1
                   }
                 },
                 "required": [
@@ -975,133 +699,43 @@
                   "authorization_type",
                   "signal_tags"
                 ],
-                "type": "object"
+                "additionalProperties": true
               }
             ]
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
-        "collections": {
-          "description": "Collections produced or distributed by this publisher. Declares the content programs whose inventory is sold through authorized agents. Products in get_products responses reference these collections by collection_id.",
-          "items": {
-            "$ref": "core/collection.json"
-          },
-          "type": "array"
-        },
-        "contact": {
-          "additionalProperties": true,
-          "description": "Contact information for the entity managing this adagents.json file (may be publisher or third-party operator)",
-          "properties": {
-            "domain": {
-              "description": "Primary domain of the entity managing this file",
-              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-              "type": "string"
-            },
-            "email": {
-              "description": "Contact email for questions or issues with this authorization file",
-              "format": "email",
-              "maxLength": 255,
-              "minLength": 1,
-              "type": "string"
-            },
-            "name": {
-              "description": "Name of the entity managing this file (e.g., 'Meta Advertising Operations', 'Clear Channel Digital')",
-              "maxLength": 255,
-              "minLength": 1,
-              "type": "string"
-            },
-            "privacy_policy_url": {
-              "description": "URL to the entity's privacy policy. Used for consumer consent flows when interacting with this sales agent.",
-              "format": "uri",
-              "type": "string"
-            },
-            "seller_id": {
-              "description": "Seller ID from IAB Tech Lab sellers.json (if applicable)",
-              "maxLength": 255,
-              "minLength": 1,
-              "type": "string"
-            },
-            "tag_id": {
-              "description": "TAG Certified Against Fraud ID for verification (if applicable)",
-              "maxLength": 100,
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "name"
-          ],
-          "type": "object"
-        },
-        "last_updated": {
-          "description": "ISO 8601 timestamp indicating when this file was last updated",
-          "format": "date-time",
-          "type": "string"
-        },
-        "placement_tags": {
-          "additionalProperties": {
-            "additionalProperties": true,
-            "properties": {
-              "description": {
-                "description": "Description of what this placement tag represents",
-                "type": "string"
-              },
-              "name": {
-                "description": "Human-readable name for this placement tag",
-                "type": "string"
-              }
-            },
-            "required": [
-              "name",
-              "description"
-            ],
-            "type": "object"
-          },
-          "description": "Metadata for each tag referenced by placements. Provides human-readable context for publisher-defined placement tag values used in grouping and authorization.",
-          "type": "object"
-        },
-        "placements": {
-          "description": "Canonical placement definitions for properties in this file. Products SHOULD reuse these placement_id values when exposing inventory in get_products, and authorized agents can scope authorization to these placement IDs.",
-          "items": {
-            "$ref": "core/placement-definition.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "properties": {
-          "description": "Array of all properties covered by this adagents.json file. Defines the canonical property list that authorized agents reference.",
-          "items": {
-            "$ref": "core/property.json"
-          },
-          "minItems": 1,
-          "type": "array"
+        "last_updated": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp indicating when this file was last updated"
         },
         "property_features": {
+          "type": "array",
           "description": "[AdCP 3.0] Optional list of agents that provide property feature data (certifications, scores, compliance status). Used for discovery - actual data is accessed through property list filters.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "The agent's API endpoint URL"
+              },
+              "name": {
+                "type": "string",
+                "description": "Human-readable name of the vendor/agent (e.g., 'Scope3', 'TAG', 'OneTrust')"
+              },
               "features": {
+                "type": "array",
                 "description": "Feature IDs this agent provides (e.g., 'carbon_score', 'tag_certified_against_fraud'). Use get_adcp_capabilities on the agent for full definitions.",
                 "items": {
                   "type": "string"
                 },
-                "minItems": 1,
-                "type": "array"
-              },
-              "name": {
-                "description": "Human-readable name of the vendor/agent (e.g., 'Scope3', 'TAG', 'OneTrust')",
-                "type": "string"
+                "minItems": 1
               },
               "publisher_id": {
-                "description": "Optional publisher identifier at this agent (for lookup)",
-                "type": "string"
-              },
-              "url": {
-                "description": "The agent's API endpoint URL",
-                "format": "uri",
-                "type": "string"
+                "type": "string",
+                "description": "Optional publisher identifier at this agent (for lookup)"
               }
             },
             "required": [
@@ -1109,68 +743,482 @@
               "name",
               "features"
             ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "signal_tags": {
-          "additionalProperties": {
-            "additionalProperties": true,
-            "properties": {
-              "description": {
-                "description": "Description of what this tag represents",
-                "type": "string"
-              },
-              "name": {
-                "description": "Human-readable name for this tag",
-                "type": "string"
-              }
-            },
-            "required": [
-              "name",
-              "description"
-            ],
-            "type": "object"
-          },
-          "description": "Metadata for each tag referenced by signals. Provides human-readable context for signal tag values.",
-          "type": "object"
+            "additionalProperties": true
+          }
         },
         "signals": {
+          "type": "array",
           "description": "Signal catalog published by this data provider. Signals agents reference these signals via data_provider_domain + signal_id.",
           "items": {
             "$ref": "core/signal-definition.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
-        "tags": {
+        "signal_tags": {
+          "type": "object",
+          "description": "Metadata for each tag referenced by signals. Provides human-readable context for signal tag values.",
           "additionalProperties": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
-              "description": {
-                "description": "Description of what this tag represents",
-                "type": "string"
-              },
               "name": {
-                "description": "Human-readable name for this tag",
-                "type": "string"
+                "type": "string",
+                "description": "Human-readable name for this tag"
+              },
+              "description": {
+                "type": "string",
+                "description": "Description of what this tag represents"
               }
             },
             "required": [
               "name",
               "description"
             ],
-            "type": "object"
-          },
-          "description": "Metadata for each tag referenced by properties. Provides human-readable context for property tag values.",
-          "type": "object"
+            "additionalProperties": true
+          }
         }
       },
       "required": [
         "authorized_agents"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
   ],
-  "title": "AdCP Agents Authorization"
+  "examples": [
+    {
+      "$schema": "/schemas/latest/adagents.json",
+      "authoritative_location": "https://cdn.example.com/adagents/v2/adagents.json",
+      "last_updated": "2025-01-15T10:00:00Z"
+    },
+    {
+      "$schema": "/schemas/latest/adagents.json",
+      "properties": [
+        {
+          "property_id": "example_site",
+          "property_type": "website",
+          "name": "Example Site",
+          "identifiers": [
+            {
+              "type": "domain",
+              "value": "example.com"
+            }
+          ],
+          "publisher_domain": "example.com"
+        }
+      ],
+      "placements": [
+        {
+          "placement_id": "homepage_banner",
+          "name": "Homepage Banner",
+          "tags": [
+            "homepage",
+            "display",
+            "premium"
+          ],
+          "property_ids": [
+            "example_site"
+          ],
+          "format_ids": [
+            {
+              "agent_url": "https://creative.example.com",
+              "id": "display_728x90"
+            }
+          ]
+        }
+      ],
+      "placement_tags": {
+        "homepage": {
+          "name": "Homepage",
+          "description": "Placements that render on the homepage"
+        },
+        "display": {
+          "name": "Display",
+          "description": "Standard display placements"
+        },
+        "premium": {
+          "name": "Premium",
+          "description": "Premium monetization placements"
+        }
+      },
+      "authorized_agents": [
+        {
+          "url": "https://agent.example.com",
+          "authorized_for": "Official sales agent",
+          "authorization_type": "property_tags",
+          "property_tags": [
+            "all"
+          ],
+          "placement_ids": [
+            "homepage_banner"
+          ],
+          "delegation_type": "direct",
+          "exclusive": true,
+          "countries": [
+            "US",
+            "CA"
+          ],
+          "effective_from": "2025-01-01T00:00:00Z"
+        }
+      ],
+      "tags": {
+        "all": {
+          "name": "All Properties",
+          "description": "All properties in this file"
+        }
+      },
+      "last_updated": "2025-01-10T12:00:00Z"
+    },
+    {
+      "$schema": "/schemas/latest/adagents.json",
+      "contact": {
+        "name": "Meta Advertising Operations",
+        "email": "adops@meta.com",
+        "domain": "meta.com",
+        "seller_id": "pub-meta-12345",
+        "tag_id": "12345",
+        "privacy_policy_url": "https://www.meta.com/privacy/policy"
+      },
+      "properties": [
+        {
+          "property_type": "mobile_app",
+          "name": "Instagram",
+          "identifiers": [
+            {
+              "type": "ios_bundle",
+              "value": "com.burbn.instagram"
+            },
+            {
+              "type": "android_package",
+              "value": "com.instagram.android"
+            }
+          ],
+          "tags": [
+            "meta_network",
+            "social_media"
+          ],
+          "supported_channels": [
+            "social",
+            "display",
+            "olv"
+          ],
+          "publisher_domain": "instagram.com"
+        },
+        {
+          "property_type": "mobile_app",
+          "name": "Facebook",
+          "identifiers": [
+            {
+              "type": "ios_bundle",
+              "value": "com.facebook.Facebook"
+            },
+            {
+              "type": "android_package",
+              "value": "com.facebook.katana"
+            }
+          ],
+          "tags": [
+            "meta_network",
+            "social_media"
+          ],
+          "supported_channels": [
+            "social",
+            "display",
+            "olv"
+          ],
+          "publisher_domain": "facebook.com"
+        },
+        {
+          "property_type": "mobile_app",
+          "name": "WhatsApp",
+          "identifiers": [
+            {
+              "type": "ios_bundle",
+              "value": "net.whatsapp.WhatsApp"
+            },
+            {
+              "type": "android_package",
+              "value": "com.whatsapp"
+            }
+          ],
+          "tags": [
+            "meta_network",
+            "messaging"
+          ],
+          "supported_channels": [
+            "social",
+            "display"
+          ],
+          "publisher_domain": "whatsapp.com"
+        }
+      ],
+      "tags": {
+        "meta_network": {
+          "name": "Meta Network",
+          "description": "All Meta-owned properties"
+        },
+        "social_media": {
+          "name": "Social Media Apps",
+          "description": "Social networking applications"
+        },
+        "messaging": {
+          "name": "Messaging Apps",
+          "description": "Messaging and communication apps"
+        }
+      },
+      "authorized_agents": [
+        {
+          "url": "https://meta-ads.com",
+          "authorized_for": "All Meta properties",
+          "authorization_type": "property_tags",
+          "property_tags": [
+            "meta_network"
+          ]
+        }
+      ],
+      "last_updated": "2025-01-10T15:30:00Z"
+    },
+    {
+      "$schema": "/schemas/latest/adagents.json",
+      "contact": {
+        "name": "Tumblr Advertising"
+      },
+      "properties": [
+        {
+          "property_type": "website",
+          "name": "Tumblr Corporate",
+          "identifiers": [
+            {
+              "type": "domain",
+              "value": "tumblr.com"
+            }
+          ],
+          "tags": [
+            "corporate"
+          ],
+          "publisher_domain": "tumblr.com"
+        }
+      ],
+      "tags": {
+        "corporate": {
+          "name": "Corporate Properties",
+          "description": "Tumblr-owned corporate properties (not user blogs)"
+        }
+      },
+      "authorized_agents": [
+        {
+          "url": "https://tumblr-sales.com",
+          "authorized_for": "Tumblr corporate properties only",
+          "authorization_type": "property_tags",
+          "property_tags": [
+            "corporate"
+          ]
+        }
+      ],
+      "last_updated": "2025-01-10T16:00:00Z"
+    },
+    {
+      "$schema": "/schemas/latest/adagents.json",
+      "contact": {
+        "name": "Example Third-Party Sales Agent",
+        "email": "sales@agent.example",
+        "domain": "agent.example"
+      },
+      "authorized_agents": [
+        {
+          "url": "https://agent.example/api",
+          "authorized_for": "CNN CTV properties via publisher authorization",
+          "authorization_type": "publisher_properties",
+          "publisher_properties": [
+            {
+              "publisher_domain": "cnn.com",
+              "selection_type": "by_id",
+              "property_ids": [
+                "cnn_ctv_app"
+              ]
+            }
+          ]
+        },
+        {
+          "url": "https://agent.example/api",
+          "authorized_for": "All CTV properties from multiple publishers",
+          "authorization_type": "publisher_properties",
+          "publisher_properties": [
+            {
+              "publisher_domain": "cnn.com",
+              "selection_type": "by_tag",
+              "property_tags": [
+                "ctv"
+              ]
+            },
+            {
+              "publisher_domain": "espn.com",
+              "selection_type": "by_tag",
+              "property_tags": [
+                "ctv"
+              ]
+            }
+          ]
+        }
+      ],
+      "last_updated": "2025-01-10T17:00:00Z"
+    },
+    {
+      "$schema": "/schemas/latest/adagents.json",
+      "contact": {
+        "name": "Premium News Publisher",
+        "email": "adops@news.example.com",
+        "domain": "news.example.com"
+      },
+      "properties": [
+        {
+          "property_type": "website",
+          "name": "News Example",
+          "identifiers": [
+            {
+              "type": "domain",
+              "value": "news.example.com"
+            }
+          ],
+          "tags": [
+            "premium",
+            "news"
+          ],
+          "publisher_domain": "news.example.com"
+        }
+      ],
+      "tags": {
+        "premium": {
+          "name": "Premium Properties",
+          "description": "High-quality, brand-safe properties"
+        },
+        "news": {
+          "name": "News Properties",
+          "description": "News and journalism content"
+        }
+      },
+      "authorized_agents": [
+        {
+          "url": "https://sales.news.example.com",
+          "authorized_for": "All news properties",
+          "authorization_type": "property_tags",
+          "property_tags": [
+            "news"
+          ]
+        }
+      ],
+      "property_features": [
+        {
+          "url": "https://api.scope3.com",
+          "name": "Scope3",
+          "features": [
+            "carbon_score",
+            "sustainability_grade"
+          ],
+          "publisher_id": "pub_news_12345"
+        },
+        {
+          "url": "https://api.tagtoday.net",
+          "name": "TAG",
+          "features": [
+            "tag_certified_against_fraud",
+            "tag_brand_safety_certified"
+          ]
+        },
+        {
+          "url": "https://api.onetrust.com",
+          "name": "OneTrust",
+          "features": [
+            "gdpr_compliant",
+            "tcf_registered",
+            "ccpa_compliant"
+          ],
+          "publisher_id": "ot_news_67890"
+        }
+      ],
+      "last_updated": "2025-01-10T18:00:00Z"
+    },
+    {
+      "$schema": "/schemas/latest/adagents.json",
+      "contact": {
+        "name": "Polk Automotive Data",
+        "email": "partnerships@polk.com",
+        "domain": "polk.com"
+      },
+      "signals": [
+        {
+          "id": "likely_tesla_buyers",
+          "name": "Likely Tesla Buyers",
+          "description": "Consumers modeled as likely to purchase a Tesla in the next 12 months based on vehicle registration, financial, and behavioral data",
+          "value_type": "binary",
+          "category": "purchase_intent",
+          "tags": [
+            "automotive",
+            "premium"
+          ]
+        },
+        {
+          "id": "vehicle_ownership",
+          "name": "Current Vehicle Ownership",
+          "description": "Current vehicle make owned by the consumer",
+          "value_type": "categorical",
+          "category": "ownership",
+          "allowed_values": [
+            "tesla",
+            "bmw",
+            "mercedes",
+            "audi",
+            "lexus",
+            "other_luxury",
+            "non_luxury"
+          ],
+          "tags": [
+            "automotive"
+          ]
+        },
+        {
+          "id": "purchase_propensity",
+          "name": "Auto Purchase Propensity",
+          "description": "Likelihood score of purchasing any new vehicle in the next 6 months",
+          "value_type": "numeric",
+          "category": "purchase_intent",
+          "range": {
+            "min": 0,
+            "max": 1,
+            "unit": "score"
+          },
+          "tags": [
+            "automotive"
+          ]
+        }
+      ],
+      "signal_tags": {
+        "automotive": {
+          "name": "Automotive Signals",
+          "description": "Vehicle-related audience segments"
+        },
+        "premium": {
+          "name": "Premium Signals",
+          "description": "High-value premium audience segments"
+        }
+      },
+      "authorized_agents": [
+        {
+          "url": "https://liveramp.com/.well-known/adcp/signals",
+          "authorized_for": "All Polk automotive signals via LiveRamp",
+          "authorization_type": "signal_tags",
+          "signal_tags": [
+            "automotive"
+          ]
+        },
+        {
+          "url": "https://the-trade-desk.com/.well-known/adcp/signals",
+          "authorized_for": "Polk premium signals only",
+          "authorization_type": "signal_ids",
+          "signal_ids": [
+            "likely_tesla_buyers"
+          ]
+        }
+      ],
+      "last_updated": "2025-01-15T10:00:00Z"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/brand.json b/schemas/cache/brand.json
index 33214daac..48ab4bbc9 100644
--- a/schemas/cache/brand.json
+++ b/schemas/cache/brand.json
@@ -1,783 +1,1101 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Brand Discovery",
+  "description": "Brand identity and discovery file. Hosted at /.well-known/brand.json on house domains. Contains the full brand portfolio with identity, creative assets, and digital properties. Brands are identified by house + brand_id (like properties are identified by publisher + property_id). Supports variants: house portfolio (full brand data), brand agent (agent provides brand info via MCP), house redirect (pointer to house domain), or authoritative location redirect.",
   "definitions": {
-    "asset": {
-      "additionalProperties": true,
-      "description": "Brand asset (image, video, audio, text)",
+    "domain": {
+      "type": "string",
+      "description": "A valid domain name",
+      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+    },
+    "brand_id": {
+      "type": "string",
+      "description": "Brand identifier within the house portfolio. Lowercase alphanumeric with underscores. House chooses this ID.",
+      "pattern": "^[a-z0-9_]+$"
+    },
+    "localized_name": {
+      "type": "object",
+      "description": "A localized name with BCP 47 locale code key (e.g., 'en_US', 'fr_CA', 'zh_CN') and name value. Bare language codes ('en') are accepted as wildcards for backwards compatibility.",
+      "minProperties": 1,
+      "maxProperties": 1,
+      "additionalProperties": {
+        "type": "string",
+        "minLength": 1
+      }
+    },
+    "keller_type": {
+      "type": "string",
+      "enum": [
+        "master",
+        "sub_brand",
+        "endorsed",
+        "independent"
+      ],
+      "description": "Brand architecture type from Keller's theory. master: primary brand of house. sub_brand: carries parent name (Nike SB). endorsed: independent identity backed by parent (Air Jordan 'by Nike'). independent: operates separately (Converse under Nike, Inc.)"
+    },
+    "logo": {
+      "type": "object",
+      "description": "Brand logo asset with structured fields for orientation, background compatibility, and variant type",
       "properties": {
-        "asset_id": {
-          "description": "Unique identifier",
-          "type": "string"
-        },
-        "asset_type": {
-          "$ref": "enums/asset-content-type.json",
-          "description": "Type of asset content"
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to the logo asset"
         },
-        "description": {
-          "description": "Asset description or usage notes",
-          "type": "string"
+        "orientation": {
+          "type": "string",
+          "enum": [
+            "square",
+            "horizontal",
+            "vertical",
+            "stacked"
+          ],
+          "description": "Logo aspect ratio orientation. square: ~1:1, horizontal: wide, vertical: tall, stacked: vertically arranged elements"
         },
-        "duration_seconds": {
-          "description": "Video/audio duration in seconds",
-          "type": "number"
+        "background": {
+          "type": "string",
+          "enum": [
+            "dark-bg",
+            "light-bg",
+            "transparent-bg"
+          ],
+          "description": "Background compatibility. dark-bg: use on dark backgrounds, light-bg: use on light backgrounds, transparent-bg: has transparent background"
         },
-        "file_size_bytes": {
-          "description": "File size in bytes",
-          "type": "integer"
+        "variant": {
+          "type": "string",
+          "enum": [
+            "primary",
+            "secondary",
+            "icon",
+            "wordmark",
+            "full-lockup"
+          ],
+          "description": "Logo variant type. primary: main logo, secondary: alternative, icon: symbol only, wordmark: text only, full-lockup: complete logo"
         },
-        "format": {
-          "description": "File format (e.g., 'jpg', 'mp4', 'mp3')",
-          "type": "string"
+        "tags": {
+          "type": "array",
+          "description": "Additional semantic tags for custom categorization beyond the standard orientation, background, and variant fields",
+          "items": {
+            "type": "string"
+          }
         },
-        "height": {
-          "description": "Image/video height in pixels",
-          "type": "integer"
+        "usage": {
+          "type": "string",
+          "description": "Human-readable description of when to use this logo variant (e.g., 'Primary logo for use on light backgrounds')"
         },
-        "metadata": {
-          "additionalProperties": true,
-          "description": "Additional asset-specific metadata",
-          "type": "object"
+        "width": {
+          "type": "integer",
+          "description": "Width in pixels"
         },
-        "name": {
-          "description": "Human-readable name",
-          "type": "string"
+        "height": {
+          "type": "integer",
+          "description": "Height in pixels"
+        }
+      },
+      "required": [
+        "url"
+      ],
+      "additionalProperties": true
+    },
+    "hex_color": {
+      "type": "string",
+      "pattern": "^#[0-9A-Fa-f]{6}$",
+      "description": "A single hex color value"
+    },
+    "color_value": {
+      "oneOf": [
+        {
+          "type": "string",
+          "pattern": "^#[0-9A-Fa-f]{6}$"
         },
-        "tags": {
-          "description": "Tags for discovery (e.g., 'hero', 'lifestyle', 'product', 'holiday')",
+        {
+          "type": "array",
           "items": {
-            "type": "string"
+            "type": "string",
+            "pattern": "^#[0-9A-Fa-f]{6}$"
           },
-          "type": "array"
+          "minItems": 1
+        }
+      ]
+    },
+    "colors": {
+      "type": "object",
+      "description": "Brand color palette. Each role accepts a single hex color or an array of hex colors for brands with multiple values per role. Beyond the core five roles, brands can provide additional color roles for finer granularity \u2014 heading, body, label, border, divider, surface_1, surface_2, etc.",
+      "properties": {
+        "primary": {
+          "$ref": "#/definitions/color_value"
+        },
+        "secondary": {
+          "$ref": "#/definitions/color_value"
+        },
+        "accent": {
+          "$ref": "#/definitions/color_value"
+        },
+        "background": {
+          "$ref": "#/definitions/color_value"
+        },
+        "text": {
+          "$ref": "#/definitions/color_value"
+        },
+        "heading": {
+          "$ref": "#/definitions/color_value"
+        },
+        "body": {
+          "$ref": "#/definitions/color_value"
+        },
+        "label": {
+          "$ref": "#/definitions/color_value"
+        },
+        "border": {
+          "$ref": "#/definitions/color_value"
+        },
+        "divider": {
+          "$ref": "#/definitions/color_value"
+        },
+        "surface_1": {
+          "$ref": "#/definitions/color_value"
         },
+        "surface_2": {
+          "$ref": "#/definitions/color_value"
+        }
+      },
+      "additionalProperties": {
+        "$ref": "#/definitions/color_value"
+      }
+    },
+    "font_file": {
+      "type": "object",
+      "description": "A font file with weight, style, and variable font metadata",
+      "properties": {
         "url": {
-          "description": "URL to CDN-hosted asset file",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "pattern": "^https://",
+          "description": "HTTPS URL to the font file (WOFF2, TTF, or OTF)"
         },
-        "width": {
-          "description": "Image/video width in pixels",
-          "type": "integer"
+        "weight": {
+          "type": "integer",
+          "minimum": 100,
+          "maximum": 900,
+          "description": "CSS numeric font-weight for static fonts (100-900)"
+        },
+        "weight_range": {
+          "type": "array",
+          "items": {
+            "type": "integer",
+            "minimum": 100,
+            "maximum": 900
+          },
+          "minItems": 2,
+          "maxItems": 2,
+          "description": "Variable font weight axis range as [min, max] (e.g., [100, 900]). Use instead of weight for variable fonts."
+        },
+        "style": {
+          "type": "string",
+          "enum": [
+            "normal",
+            "italic",
+            "oblique"
+          ],
+          "description": "CSS font-style"
         }
       },
       "required": [
-        "asset_id",
-        "asset_type",
         "url"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "asset_library": {
-      "additionalProperties": true,
-      "description": "A managed asset library (icon set, illustration system, image collection). The URL is for human access; agent-facing DAM integration is under investigation.",
-      "properties": {
-        "color_guide": {
-          "additionalProperties": true,
-          "description": "Color guide for the asset library defining roles and palettes",
+    "font_role": {
+      "description": "A font role entry. Either a CSS font-family string (simple) or a structured object with family name and font files (rich).",
+      "oneOf": [
+        {
+          "type": "string",
+          "description": "CSS font-family name (e.g., 'Montserrat', 'Arial, sans-serif')"
+        },
+        {
+          "type": "object",
+          "description": "Structured font with family name, downloadable font files, and typographic metadata",
           "properties": {
-            "palettes": {
-              "description": "Named color palettes mapping roles to specific colors",
+            "family": {
+              "type": "string",
+              "description": "CSS font-family name (e.g., 'Brand Sans')"
+            },
+            "files": {
+              "type": "array",
               "items": {
-                "additionalProperties": true,
-                "properties": {
-                  "colors": {
-                    "additionalProperties": {
-                      "$ref": "#/definitions/hex_color"
-                    },
-                    "description": "Map of role names to hex color values",
-                    "type": "object"
-                  },
-                  "name": {
-                    "description": "Palette name",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "name",
-                  "colors"
-                ],
-                "type": "object"
+                "$ref": "#/definitions/font_file"
               },
-              "type": "array"
+              "maxItems": 36,
+              "description": "Font files for different weights and styles"
             },
-            "roles": {
-              "description": "Named color roles used in the library (e.g., base, shadow_1, highlight_1, stroke)",
+            "opentype_features": {
+              "type": "array",
               "items": {
-                "type": "string"
+                "type": "string",
+                "pattern": "^[a-z0-9]{4}$"
+              },
+              "maxItems": 20,
+              "description": "OpenType feature tags to enable (e.g., ['ss01', 'tnum', 'cv01']). These are four-character tags per the OpenType spec."
+            },
+            "fallbacks": {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "maxLength": 100
               },
-              "type": "array"
+              "maxItems": 10,
+              "description": "Ordered fallback font-family names for when the primary font is unavailable or does not support the required script (e.g., ['Noto Sans Arabic', 'Noto Sans SC', 'sans-serif'])"
             }
           },
-          "type": "object"
-        },
-        "description": {
-          "description": "Description of the library contents and usage",
-          "type": "string"
-        },
-        "name": {
-          "description": "Display name of the asset library",
-          "type": "string"
-        },
-        "type": {
-          "description": "Type of asset library",
-          "enum": [
-            "icon_set",
-            "illustration_system",
-            "image_library",
-            "video_library",
-            "template_library"
+          "required": [
+            "family"
           ],
-          "type": "string"
+          "additionalProperties": true
+        }
+      ]
+    },
+    "fonts": {
+      "type": "object",
+      "description": "Brand typography. Each key is a role name (e.g., 'primary', 'secondary') referenced by type_scale entries. Values are either a CSS font-family string or a structured object with font files for reliable resolution.",
+      "maxProperties": 20,
+      "properties": {
+        "primary": {
+          "$ref": "#/definitions/font_role",
+          "description": "Primary font family"
         },
-        "url": {
-          "description": "URL to the asset library (for human access)",
-          "format": "uri",
-          "type": "string"
+        "secondary": {
+          "$ref": "#/definitions/font_role",
+          "description": "Secondary font family"
         }
       },
-      "required": [
-        "name",
-        "url"
-      ],
-      "type": "object"
+      "additionalProperties": {
+        "$ref": "#/definitions/font_role"
+      }
     },
-    "authorized_operator": {
-      "additionalProperties": true,
-      "description": "An entity authorized to represent brands from this house. Verified by resolving the operator's domain.",
+    "asset": {
+      "type": "object",
+      "description": "Brand asset (image, video, audio, text)",
       "properties": {
-        "brands": {
-          "description": "Brand IDs this operator is authorized for. Use ['*'] for all brands in the portfolio.",
-          "items": {
-            "pattern": "^([a-z0-9_]+|\\*)$",
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
+        "asset_id": {
+          "type": "string",
+          "description": "Unique identifier"
         },
-        "countries": {
-          "description": "ISO 3166-1 alpha-2 country codes where this authorization applies. Omit for global authorization.",
+        "asset_type": {
+          "$ref": "enums/asset-content-type.json",
+          "description": "Type of asset content"
+        },
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to CDN-hosted asset file"
+        },
+        "tags": {
+          "type": "array",
           "items": {
-            "pattern": "^[A-Z]{2}$",
             "type": "string"
           },
-          "type": "array"
+          "description": "Tags for discovery (e.g., 'hero', 'lifestyle', 'product', 'holiday')"
         },
-        "domain": {
-          "$ref": "#/definitions/domain",
-          "description": "Domain of the authorized operator (e.g., 'groupm.com')"
+        "name": {
+          "type": "string",
+          "description": "Human-readable name"
+        },
+        "description": {
+          "type": "string",
+          "description": "Asset description or usage notes"
+        },
+        "width": {
+          "type": "integer",
+          "description": "Image/video width in pixels"
+        },
+        "height": {
+          "type": "integer",
+          "description": "Image/video height in pixels"
+        },
+        "duration_seconds": {
+          "type": "number",
+          "description": "Video/audio duration in seconds"
+        },
+        "file_size_bytes": {
+          "type": "integer",
+          "description": "File size in bytes"
+        },
+        "format": {
+          "type": "string",
+          "description": "File format (e.g., 'jpg', 'mp4', 'mp3')"
+        },
+        "metadata": {
+          "type": "object",
+          "description": "Additional asset-specific metadata",
+          "additionalProperties": true
         }
       },
       "required": [
-        "domain",
-        "brands"
+        "asset_id",
+        "asset_type",
+        "url"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "brand": {
-      "additionalProperties": true,
-      "description": "A brand within a house portfolio. Combines identity (who) with creative assets (how to represent). Referenced as domain + brand_id.",
+    "property": {
+      "type": "object",
+      "description": "A digital property associated with a brand. Defaults to owned; use 'relationship' to declare direct, delegated, or ad_network properties. These values match the delegation_type field in adagents.json, creating a bilateral verification chain: the operator declares the relationship here, the publisher confirms by setting the same delegation_type on the agent's authorization in their adagents.json.",
       "properties": {
-        "assets": {
-          "description": "Brand asset library",
-          "items": {
-            "$ref": "#/definitions/asset"
-          },
-          "type": "array"
-        },
-        "avatar": {
-          "additionalProperties": true,
-          "description": "Visual avatar configuration",
-          "properties": {
-            "avatar_id": {
-              "type": "string"
-            },
-            "provider": {
-              "type": "string"
-            },
-            "settings": {
-              "additionalProperties": true,
-              "type": "object"
-            }
-          },
-          "type": "object"
+        "type": {
+          "type": "string",
+          "enum": [
+            "website",
+            "mobile_app",
+            "ctv_app",
+            "desktop_app",
+            "dooh",
+            "podcast",
+            "radio",
+            "streaming_audio"
+          ],
+          "description": "Property type"
         },
-        "brand_agent": {
-          "$ref": "#/definitions/brand_agent",
-          "description": "Brand agent that provides dynamic brand data via MCP"
+        "identifier": {
+          "type": "string",
+          "description": "Property identifier - domain for websites, bundle ID for apps",
+          "minLength": 1
         },
-        "collections": {
-          "description": "Collections this person or brand is associated with. Enables bidirectional linking: a collection's talent references brand.json via brand_url, and brand.json links back to collections.",
+        "store": {
+          "type": "string",
+          "enum": [
+            "apple",
+            "google",
+            "amazon",
+            "roku",
+            "samsung",
+            "lg",
+            "other"
+          ],
+          "description": "App store for mobile/CTV apps"
+        },
+        "region": {
+          "type": "string",
+          "description": "ISO 3166-1 alpha-2 country code or 'global'",
+          "pattern": "^([A-Z]{2}|global)$"
+        },
+        "primary": {
+          "type": "boolean",
+          "default": false,
+          "description": "Whether this is the primary property for the brand"
+        },
+        "relationship": {
+          "type": "string",
+          "enum": [
+            "owned",
+            "direct",
+            "delegated",
+            "ad_network"
+          ],
+          "default": "owned",
+          "description": "How this brand relates to the property, using the same vocabulary as adagents.json delegation_type. 'owned': the brand owns and operates this property (default). 'direct': the brand is the direct sales path for this property, even if a third party operates the software (e.g., a publisher's in-house ad team using a vendor's tech). 'delegated': the brand manages monetization for this property \u2014 they are in charge of ad sales (e.g., Mediavine managing a food blog). 'ad_network': the brand sells this property's inventory as part of a network or exchange \u2014 they are a path to the inventory, not the path (e.g., PubMatic as an SSP). For non-owned properties, the publisher confirms the relationship by setting the matching delegation_type on the agent's authorization in their adagents.json."
+        }
+      },
+      "required": [
+        "type",
+        "identifier"
+      ],
+      "additionalProperties": true
+    },
+    "product_catalog": {
+      "type": "object",
+      "description": "Product catalog for e-commerce brands",
+      "properties": {
+        "feed_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to product catalog feed"
+        },
+        "feed_format": {
+          "type": "string",
+          "enum": [
+            "google_merchant_center",
+            "facebook_catalog",
+            "openai_product_feed",
+            "custom"
+          ],
+          "description": "Format of the product feed"
+        },
+        "categories": {
+          "type": "array",
           "items": {
-            "additionalProperties": true,
-            "properties": {
-              "collection_id": {
-                "description": "Collection identifier as used in the seller's get_products responses",
-                "type": "string"
-              },
-              "name": {
-                "description": "Human-readable collection name",
-                "type": "string"
-              },
-              "role": {
-                "$ref": "enums/talent-role.json",
-                "description": "This person's role on the collection"
-              },
-              "seller_agent_url": {
-                "description": "URL of the sales agent that sells inventory for this collection. Buyer agents can query this agent for collection products.",
-                "format": "uri",
-                "type": "string"
-              }
-            },
-            "required": [
-              "name"
-            ],
-            "type": "object"
+            "type": "string"
           },
-          "type": "array"
+          "description": "Product categories available in the catalog"
         },
-        "colors": {
-          "$ref": "#/definitions/colors"
+        "last_updated": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the product catalog was last updated"
         },
-        "contact": {
-          "description": "Brand-level contact information",
+        "update_frequency": {
+          "type": "string",
+          "enum": [
+            "realtime",
+            "hourly",
+            "daily",
+            "weekly"
+          ],
+          "description": "How frequently the product catalog is updated"
+        },
+        "agentic_checkout": {
+          "type": "object",
+          "description": "Agentic checkout endpoint configuration",
           "properties": {
-            "email": {
-              "description": "Contact email",
-              "format": "email",
-              "type": "string"
+            "endpoint": {
+              "type": "string",
+              "format": "uri",
+              "description": "Base URL for checkout session API"
             },
-            "phone": {
-              "description": "Contact phone number",
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "description": {
-          "description": "Brand description",
-          "type": "string"
-        },
-        "disclaimers": {
-          "description": "Legal disclaimers for creatives",
-          "items": {
-            "properties": {
-              "context": {
-                "type": "string"
-              },
-              "required": {
-                "default": true,
-                "type": "boolean"
-              },
-              "text": {
+            "spec": {
+              "type": "string",
+              "enum": [
+                "openai_agentic_checkout_v1"
+              ],
+              "description": "Checkout API specification"
+            },
+            "supported_payment_providers": {
+              "type": "array",
+              "description": "Payment providers supported by this checkout endpoint",
+              "items": {
                 "type": "string"
               }
-            },
-            "required": [
-              "text"
-            ],
-            "type": "object"
+            }
           },
-          "type": "array"
-        },
-        "fonts": {
-          "$ref": "#/definitions/fonts"
-        },
+          "required": [
+            "endpoint",
+            "spec"
+          ]
+        }
+      },
+      "required": [
+        "feed_url"
+      ],
+      "additionalProperties": true
+    },
+    "brand": {
+      "type": "object",
+      "description": "A brand within a house portfolio. Combines identity (who) with creative assets (how to represent). Referenced as domain + brand_id.",
+      "properties": {
         "id": {
           "$ref": "#/definitions/brand_id",
           "description": "Brand identifier within the house. House chooses this ID."
         },
-        "industries": {
-          "description": "Brand industries (e.g., ['automotive'] or ['healthcare.pharmaceutical', 'cpg'] for a consumer health company). Describes what the company does \u2014 not what regulatory regimes apply (use policy_categories for that). When create_media_buy omits advertiser_industry, sellers may infer from this field.",
-          "items": {
-            "$ref": "enums/advertiser-industry.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "keller_type": {
-          "$ref": "#/definitions/keller_type"
-        },
-        "logos": {
-          "description": "Brand logo assets",
-          "items": {
-            "$ref": "#/definitions/logo"
-          },
-          "type": "array"
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Primary brand URL for context and asset discovery"
         },
         "names": {
+          "type": "array",
           "description": "Localized brand names. Multiple entries per language allowed for aliases.",
           "items": {
             "$ref": "#/definitions/localized_name"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "keller_type": {
+          "$ref": "#/definitions/keller_type"
         },
         "parent_brand": {
           "$ref": "#/definitions/brand_id",
           "description": "Parent brand ID for sub-brands and endorsed brands"
         },
-        "privacy_policy_url": {
-          "description": "URL to the brand's privacy policy",
-          "format": "uri",
-          "type": "string"
-        },
-        "product_catalog": {
-          "$ref": "#/definitions/product_catalog"
+        "description": {
+          "type": "string",
+          "description": "Brand description"
         },
-        "properties": {
-          "description": "Digital properties owned by this brand",
+        "industries": {
+          "type": "array",
           "items": {
-            "$ref": "#/definitions/property"
+            "type": "string"
           },
-          "type": "array"
+          "minItems": 1,
+          "description": "Brand industries (e.g., ['automotive'] or ['pharmaceutical', 'cpg'] for a consumer health company). Describes what the company does \u2014 not what regulatory regimes apply (use policy_categories for that)."
         },
-        "rights_agent": {
-          "$ref": "#/definitions/rights_agent",
-          "description": "Rights licensing agent for this brand"
+        "target_audience": {
+          "type": "string",
+          "description": "Primary target audience"
         },
-        "tagline": {
-          "description": "Brand tagline or slogan. Accepts a plain string or a localized array matching the names pattern.",
-          "oneOf": [
-            {
-              "description": "Plain tagline string for backwards compatibility",
-              "type": "string"
-            },
-            {
-              "description": "Localized taglines with BCP 47 locale codes",
-              "items": {
-                "$ref": "#/definitions/localized_name"
-              },
-              "minItems": 1,
-              "type": "array"
-            }
-          ]
+        "logos": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/logo"
+          },
+          "description": "Brand logo assets"
         },
-        "target_audience": {
-          "description": "Primary target audience",
-          "type": "string"
+        "colors": {
+          "$ref": "#/definitions/colors"
+        },
+        "fonts": {
+          "$ref": "#/definitions/fonts"
         },
         "tone": {
           "description": "Brand voice and messaging tone guidelines",
           "oneOf": [
             {
-              "description": "Simple tone descriptors for backwards compatibility",
-              "type": "string"
+              "type": "string",
+              "description": "Simple tone descriptors for backwards compatibility"
             },
             {
+              "type": "object",
               "description": "Structured brand voice guidelines",
               "properties": {
+                "voice": {
+                  "type": "string",
+                  "description": "High-level voice descriptor (e.g., 'warm and inviting', 'professional and trustworthy')"
+                },
                 "attributes": {
+                  "type": "array",
                   "description": "Personality traits that characterize the brand voice",
                   "items": {
                     "type": "string"
-                  },
-                  "type": "array"
-                },
-                "donts": {
-                  "description": "Guardrails to avoid brand violations - what NOT to do",
-                  "items": {
-                    "type": "string"
-                  },
-                  "type": "array"
+                  }
                 },
                 "dos": {
+                  "type": "array",
                   "description": "Guidance for copy generation - what TO do",
                   "items": {
                     "type": "string"
-                  },
-                  "type": "array"
+                  }
                 },
-                "voice": {
-                  "description": "High-level voice descriptor (e.g., 'warm and inviting', 'professional and trustworthy')",
-                  "type": "string"
+                "donts": {
+                  "type": "array",
+                  "description": "Guardrails to avoid brand violations - what NOT to do",
+                  "items": {
+                    "type": "string"
+                  }
                 }
-              },
-              "type": "object"
+              }
             }
           ]
         },
-        "url": {
-          "description": "Primary brand URL for context and asset discovery",
-          "format": "uri",
-          "type": "string"
+        "tagline": {
+          "oneOf": [
+            {
+              "type": "string",
+              "description": "Plain tagline string for backwards compatibility"
+            },
+            {
+              "type": "array",
+              "description": "Localized taglines with BCP 47 locale codes",
+              "items": {
+                "$ref": "#/definitions/localized_name"
+              },
+              "minItems": 1
+            }
+          ],
+          "description": "Brand tagline or slogan. Accepts a plain string or a localized array matching the names pattern."
         },
-        "visual_guidelines": {
-          "$ref": "#/definitions/visual_guidelines",
-          "description": "Structured visual rules for generative creative systems"
+        "assets": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/asset"
+          },
+          "description": "Brand asset library"
         },
-        "voice_synthesis": {
-          "additionalProperties": true,
-          "description": "TTS voice synthesis configuration for AI-generated audio",
-          "properties": {
+        "properties": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/property"
+          },
+          "description": "Digital properties associated with this brand \u2014 owned, managed, or represented"
+        },
+        "product_catalog": {
+          "$ref": "#/definitions/product_catalog"
+        },
+        "privacy_policy_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to the brand's privacy policy"
+        },
+        "disclaimers": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "properties": {
+              "text": {
+                "type": "string"
+              },
+              "context": {
+                "type": "string"
+              },
+              "required": {
+                "type": "boolean",
+                "default": true
+              }
+            },
+            "required": [
+              "text"
+            ]
+          },
+          "description": "Legal disclaimers for creatives"
+        },
+        "voice_synthesis": {
+          "type": "object",
+          "description": "TTS voice synthesis configuration for AI-generated audio",
+          "properties": {
             "provider": {
               "type": "string"
             },
+            "voice_id": {
+              "type": "string"
+            },
             "settings": {
-              "additionalProperties": true,
-              "type": "object"
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "avatar": {
+          "type": "object",
+          "description": "Visual avatar configuration",
+          "properties": {
+            "provider": {
+              "type": "string"
             },
-            "voice_id": {
+            "avatar_id": {
               "type": "string"
+            },
+            "settings": {
+              "type": "object",
+              "additionalProperties": true
             }
           },
-          "type": "object"
+          "additionalProperties": true
+        },
+        "visual_guidelines": {
+          "$ref": "#/definitions/visual_guidelines",
+          "description": "Structured visual rules for generative creative systems"
+        },
+        "agents": {
+          "$ref": "#/definitions/agents",
+          "description": "Agents authorized to act on behalf of this brand. Overrides house-level agents of the same type."
+        },
+        "brand_agent": {
+          "$ref": "#/definitions/brand_agent",
+          "description": "Deprecated: use agents array with type 'brand' instead. Brand agent that provides dynamic brand data via MCP.",
+          "deprecated": true
+        },
+        "rights_agent": {
+          "$ref": "#/definitions/rights_agent",
+          "description": "Deprecated: use agents array with type 'rights' instead. Rights licensing agent for this brand.",
+          "deprecated": true
+        },
+        "contact": {
+          "type": "object",
+          "description": "Brand-level contact information",
+          "properties": {
+            "email": {
+              "type": "string",
+              "format": "email",
+              "description": "Contact email"
+            },
+            "phone": {
+              "type": "string",
+              "description": "Contact phone number"
+            }
+          }
+        },
+        "collections": {
+          "type": "array",
+          "description": "Collections this person or brand is associated with. Enables bidirectional linking: a collection's talent references brand.json via brand_url, and brand.json links back to collections.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "collection_id": {
+                "type": "string",
+                "description": "Collection identifier as used in the seller's get_products responses"
+              },
+              "name": {
+                "type": "string",
+                "description": "Human-readable collection name"
+              },
+              "role": {
+                "$ref": "enums/talent-role.json",
+                "description": "This person's role on the collection"
+              },
+              "seller_agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the sales agent that sells inventory for this collection. Buyer agents can query this agent for collection products."
+              }
+            },
+            "required": [
+              "name"
+            ],
+            "additionalProperties": true
+          }
         }
       },
       "required": [
         "id",
         "names"
       ],
-      "type": "object"
+      "additionalProperties": true
+    },
+    "house": {
+      "type": "object",
+      "description": "Corporate or organizational entity that owns brands",
+      "properties": {
+        "domain": {
+          "$ref": "#/definitions/domain",
+          "description": "The house's domain where brand.json is hosted"
+        },
+        "name": {
+          "type": "string",
+          "description": "Primary display name of the house",
+          "minLength": 1
+        },
+        "names": {
+          "type": "array",
+          "description": "Localized house names including legal name, stock symbol, etc.",
+          "items": {
+            "$ref": "#/definitions/localized_name"
+          }
+        },
+        "architecture": {
+          "type": "string",
+          "enum": [
+            "branded_house",
+            "house_of_brands",
+            "hybrid"
+          ],
+          "description": "Brand architecture model: branded_house (Google), house_of_brands (P&G), hybrid (Nike)"
+        },
+        "agents": {
+          "$ref": "#/definitions/agents",
+          "description": "House-level agents that apply to all brands unless overridden at the brand level"
+        }
+      },
+      "required": [
+        "domain",
+        "name"
+      ],
+      "additionalProperties": true
     },
     "brand_agent": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Reference to a brand agent that provides brand data via MCP",
       "properties": {
-        "id": {
-          "description": "Agent identifier (useful for logging, multi-tenant DAMs)",
-          "pattern": "^[a-z0-9_]+$",
-          "type": "string"
-        },
         "url": {
-          "description": "Brand agent MCP endpoint URL",
+          "type": "string",
           "format": "uri",
           "pattern": "^https://",
-          "type": "string"
+          "description": "Brand agent MCP endpoint URL"
+        },
+        "id": {
+          "type": "string",
+          "description": "Agent identifier (useful for logging, multi-tenant DAMs)",
+          "pattern": "^[a-z0-9_]+$"
         }
       },
       "required": [
         "url",
         "id"
       ],
-      "type": "object"
-    },
-    "brand_id": {
-      "description": "Brand identifier within the house portfolio. Lowercase alphanumeric with underscores. House chooses this ID.",
-      "pattern": "^[a-z0-9_]+$",
-      "type": "string"
+      "additionalProperties": true
     },
-    "brand_shapes": {
-      "additionalProperties": true,
-      "description": "Distinctive shapes used as part of brand visual identity",
+    "rights_agent": {
+      "type": "object",
+      "description": "Rights licensing agent for this brand. Provides discovery, pricing, and acquisition of licensable rights via MCP. Use get_rights and acquire_rights tasks to interact.",
       "properties": {
-        "primary_shape": {
-          "description": "Primary brand shape (e.g., 'rounded_rectangle', 'circle', 'hexagon')",
-          "type": "string"
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "pattern": "^https://",
+          "description": "Rights agent MCP endpoint URL"
         },
-        "secondary_shapes": {
-          "description": "Secondary shapes in the brand vocabulary",
+        "id": {
+          "type": "string",
+          "description": "Agent identifier",
+          "pattern": "^[a-z0-9_]+$"
+        },
+        "available_uses": {
+          "type": "array",
+          "description": "Rights uses available for licensing through this agent",
           "items": {
-            "type": "string"
+            "$ref": "enums/right-use.json"
           },
-          "type": "array"
+          "minItems": 1
         },
-        "usage": {
-          "additionalProperties": true,
-          "description": "Shape usage rules",
-          "properties": {
-            "max_per_layout": {
-              "description": "Maximum distinct shapes per layout",
-              "type": "integer"
-            },
-            "overlap_allowed": {
-              "description": "Whether shapes may overlap",
-              "type": "boolean"
-            }
+        "right_types": {
+          "type": "array",
+          "description": "Types of rights available",
+          "items": {
+            "$ref": "enums/right-type.json"
           },
-          "type": "object"
-        }
-      },
-      "type": "object"
-    },
-    "color_value": {
-      "oneOf": [
-        {
-          "pattern": "^#[0-9A-Fa-f]{6}$",
-          "type": "string"
+          "minItems": 1
         },
-        {
+        "countries": {
+          "type": "array",
+          "description": "Countries where rights are available (ISO 3166-1 alpha-2)",
           "items": {
-            "pattern": "^#[0-9A-Fa-f]{6}$",
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          }
         }
-      ]
+      },
+      "required": [
+        "url",
+        "id",
+        "available_uses"
+      ],
+      "additionalProperties": true
     },
-    "colors": {
-      "additionalProperties": true,
-      "description": "Brand color palette. Each role accepts a single hex color or an array of hex colors for brands with multiple values per role.",
+    "brand_agent_entry": {
+      "type": "object",
+      "description": "An agent declared by a brand or house. Each entry identifies one agent endpoint and its functional role in the advertising ecosystem.",
       "properties": {
-        "accent": {
-          "$ref": "#/definitions/color_value"
-        },
-        "background": {
-          "$ref": "#/definitions/color_value"
-        },
-        "primary": {
-          "$ref": "#/definitions/color_value"
+        "type": {
+          "$ref": "enums/brand-agent-type.json",
+          "description": "Functional role of this agent"
         },
-        "secondary": {
-          "$ref": "#/definitions/color_value"
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "pattern": "^https://",
+          "description": "Agent endpoint URL (MCP or A2A)"
         },
-        "text": {
-          "$ref": "#/definitions/color_value"
-        }
-      },
-      "type": "object"
-    },
-    "colorway": {
-      "additionalProperties": true,
-      "description": "A named color pairing that defines how colors work together. Colorways ensure foreground/background combinations are always on-brand and accessible.",
-      "properties": {
-        "accent": {
-          "$ref": "#/definitions/hex_color"
+        "id": {
+          "type": "string",
+          "description": "Agent identifier (useful for logging, multi-tenant platforms)",
+          "pattern": "^[a-z0-9_]+$",
+          "maxLength": 100
         },
-        "background": {
-          "$ref": "#/definitions/hex_color"
+        "description": {
+          "type": "string",
+          "description": "Human-readable description of this agent's capabilities or scope",
+          "maxLength": 500
         },
-        "border": {
-          "$ref": "#/definitions/hex_color"
+        "jwks_uri": {
+          "type": "string",
+          "format": "uri",
+          "pattern": "^https://",
+          "description": "HTTPS URL of the agent's JWKS (RFC 7517) containing public keys used to verify artifacts this agent signs or requests it sends. Verified artifacts include signed governance_context tokens (for governance agents) and RFC 9421 HTTP Signatures on outgoing requests (for any agent). When absent, verifiers MUST default to /.well-known/jwks.json on the origin of `url`. Keys are identified by `kid` in the JWS header or RFC 9421 `keyid` parameter; JWKS MAY contain multiple keys to support rotation and per-purpose separation via `key_ops` and `use`."
         },
-        "channels": {
-          "description": "Channels or contexts where this colorway applies (e.g., 'online', 'print', 'pos', 'social', 'outdoor'). Omit for universal colorways.",
+        "scope": {
+          "type": "array",
+          "description": "For governance agents: which governance responsibilities this agent handles. Values correspond to compliance specialisms. When a house declares multiple governance agents, scope distinguishes them. When absent on a governance agent, the agent is assumed to handle all governance categories.",
           "items": {
-            "type": "string"
+            "type": "string",
+            "enum": [
+              "spend_authority",
+              "delivery_monitor",
+              "brand_safety",
+              "regulatory_compliance"
+            ]
           },
-          "type": "array"
-        },
-        "cta_background": {
-          "$ref": "#/definitions/hex_color",
-          "description": "CTA button/container color, if different from accent"
+          "uniqueItems": true
         },
-        "cta_foreground": {
-          "$ref": "#/definitions/hex_color",
-          "description": "CTA text/icon color, if different from foreground"
+        "available_uses": {
+          "type": "array",
+          "description": "For rights agents: rights uses available for licensing",
+          "items": {
+            "$ref": "enums/right-use.json"
+          },
+          "minItems": 1
         },
-        "foreground": {
-          "$ref": "#/definitions/hex_color"
+        "right_types": {
+          "type": "array",
+          "description": "For rights agents: types of rights available",
+          "items": {
+            "$ref": "enums/right-type.json"
+          },
+          "minItems": 1
         },
-        "name": {
-          "description": "Colorway name (e.g., 'primary', 'inverted', 'subtle')",
-          "type": "string"
+        "countries": {
+          "type": "array",
+          "description": "ISO 3166-1 alpha-2 country codes where this agent operates. Omit for global scope.",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          }
         }
       },
       "required": [
-        "name",
-        "foreground",
-        "background"
+        "type",
+        "url",
+        "id"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "composition_rules": {
-      "additionalProperties": true,
-      "description": "Layout composition rules including overlays, textures, and backgrounds",
+    "agents": {
+      "type": "array",
+      "description": "Agents declared by this brand or house. One agent per type.",
+      "items": {
+        "$ref": "#/definitions/brand_agent_entry"
+      },
+      "maxItems": 20
+    },
+    "authorized_operator": {
+      "type": "object",
+      "description": "An entity authorized to represent brands from this house. Verified by resolving the operator's domain.",
       "properties": {
-        "backgrounds": {
-          "additionalProperties": true,
-          "description": "Background treatment rules",
-          "properties": {
-            "types_allowed": {
-              "description": "Permitted background types",
-              "items": {
-                "enum": [
-                  "solid_color",
-                  "gradient",
-                  "blurred_photo",
-                  "image",
-                  "video",
-                  "pattern",
-                  "transparent"
-                ],
-                "type": "string"
-              },
-              "type": "array"
-            }
+        "domain": {
+          "$ref": "#/definitions/domain",
+          "description": "Domain of the authorized operator (e.g., 'groupm.com')"
+        },
+        "brands": {
+          "type": "array",
+          "description": "Brand IDs this operator is authorized for. Use ['*'] for all brands in the portfolio.",
+          "items": {
+            "type": "string",
+            "pattern": "^([a-z0-9_]+|\\*)$"
           },
-          "type": "object"
+          "minItems": 1
         },
-        "overlays": {
-          "additionalProperties": true,
-          "description": "Graphic overlay rules",
+        "countries": {
+          "type": "array",
+          "description": "ISO 3166-1 alpha-2 country codes where this authorization applies. Omit for global authorization.",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          }
+        }
+      },
+      "required": [
+        "domain",
+        "brands"
+      ],
+      "additionalProperties": true
+    },
+    "photography_style": {
+      "type": "object",
+      "description": "Photography style rules for generative creative systems. Defines how brand photography should look when selected or generated.",
+      "properties": {
+        "realism": {
+          "type": "string",
+          "enum": [
+            "natural",
+            "stylized",
+            "hyperreal",
+            "abstract"
+          ],
+          "description": "Level of photographic realism"
+        },
+        "lighting": {
+          "type": "string",
+          "description": "Lighting style (e.g., 'soft daylight', 'studio', 'golden hour', 'high-key', 'low-key')"
+        },
+        "color_temperature": {
+          "type": "string",
+          "enum": [
+            "warm",
+            "neutral",
+            "cool"
+          ],
+          "description": "Overall color temperature of photography"
+        },
+        "contrast": {
+          "type": "string",
+          "enum": [
+            "low",
+            "medium",
+            "high"
+          ],
+          "description": "Contrast level in photography"
+        },
+        "depth_of_field": {
+          "type": "string",
+          "enum": [
+            "shallow",
+            "medium",
+            "deep"
+          ],
+          "description": "Depth of field preference. shallow: blurred background with subject isolation, deep: everything in focus"
+        },
+        "subject": {
+          "type": "object",
+          "description": "Subject matter guidelines",
           "properties": {
-            "gradient_direction": {
-              "description": "Gradient direction (e.g., '45deg', 'to-bottom-right')",
-              "type": "string"
+            "people": {
+              "type": "object",
+              "description": "People photography guidelines",
+              "properties": {
+                "age_range": {
+                  "type": "string",
+                  "description": "Target age range (e.g., '20-35')"
+                },
+                "diversity": {
+                  "type": "string",
+                  "description": "Diversity representation (e.g., 'mixed', 'varied')"
+                },
+                "mood": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  },
+                  "description": "Mood descriptors (e.g., ['confident', 'relaxed'])"
+                }
+              },
+              "additionalProperties": true
             },
-            "gradient_style": {
-              "description": "Gradient type for overlays",
+            "product_focus": {
+              "type": "string",
               "enum": [
-                "linear",
-                "radial",
-                "conic",
-                "none"
+                "in-use",
+                "isolated",
+                "lifestyle",
+                "detail"
               ],
-              "type": "string"
+              "description": "How products are shown"
             },
-            "opacity": {
-              "description": "Overlay opacity (e.g., '70%')",
-              "type": "string"
+            "setting": {
+              "type": "string",
+              "description": "Environmental context for photography (e.g., 'indoor', 'outdoor', 'studio', 'urban', 'nature', 'workplace')"
             }
           },
-          "type": "object"
+          "additionalProperties": true
         },
-        "texture": {
-          "additionalProperties": true,
-          "description": "Texture treatment rules",
+        "framing": {
+          "type": "object",
+          "description": "Camera framing rules",
           "properties": {
-            "intensity": {
-              "description": "Texture intensity",
-              "enum": [
-                "low",
-                "medium",
-                "high"
-              ],
-              "type": "string"
+            "subject_position": {
+              "type": "string",
+              "description": "Where the subject sits in frame (e.g., 'center', 'center-left', 'rule-of-thirds')"
             },
-            "style": {
-              "description": "Texture style applied to creative assets",
-              "enum": [
-                "none",
-                "subtle_grain",
-                "noise",
-                "paper",
-                "fabric",
-                "concrete"
-              ],
-              "type": "string"
+            "crop_style": {
+              "type": "string",
+              "description": "Cropping convention (e.g., 'waist-up', 'full-body', 'close-up', 'wide')"
+            },
+            "perspective": {
+              "type": "string",
+              "description": "Camera perspective (e.g., 'eye-level', 'overhead', 'low-angle')"
             }
           },
-          "type": "object"
-        }
-      },
-      "type": "object"
-    },
-    "contact": {
-      "additionalProperties": true,
-      "description": "Contact information",
-      "properties": {
-        "domain": {
-          "$ref": "#/definitions/domain"
-        },
-        "email": {
-          "format": "email",
-          "maxLength": 255,
-          "type": "string"
+          "additionalProperties": true
         },
-        "name": {
-          "maxLength": 255,
-          "minLength": 1,
-          "type": "string"
-        }
-      },
-      "required": [
-        "name"
-      ],
-      "type": "object"
-    },
-    "domain": {
-      "description": "A valid domain name",
-      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-      "type": "string"
-    },
-    "fonts": {
-      "additionalProperties": true,
-      "description": "Brand typography",
-      "properties": {
-        "font_urls": {
-          "description": "URLs to web font files",
+        "preferred_aspect_ratios": {
+          "type": "array",
           "items": {
-            "format": "uri",
-            "type": "string"
+            "type": "string",
+            "pattern": "^\\d+:\\d+$"
           },
-          "type": "array"
-        },
-        "primary": {
-          "description": "Primary font family",
-          "type": "string"
+          "description": "Preferred aspect ratios for brand photography (e.g., '16:9', '4:5', '1:1')"
         },
-        "secondary": {
-          "description": "Secondary font family",
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "graphic_element": {
-      "additionalProperties": true,
-      "description": "A reusable decorative or structural visual element that is part of the brand identity (e.g., torn paper edges, watermarks, dividers, background patterns)",
-      "properties": {
-        "colors": {
-          "description": "Colors this element may appear in",
+        "tags": {
+          "type": "array",
           "items": {
-            "$ref": "#/definitions/hex_color"
+            "type": "string"
           },
-          "type": "array"
-        },
-        "description": {
-          "description": "How the element is used in layouts",
-          "type": "string"
-        },
-        "max_per_layout": {
-          "description": "Maximum instances per layout",
-          "type": "integer"
-        },
-        "name": {
-          "description": "Element name (e.g., 'Paper Tear', 'Brand Watermark', 'Section Divider')",
-          "type": "string"
-        },
-        "orientation": {
-          "description": "Preferred orientation when used in layouts",
-          "enum": [
-            "horizontal",
-            "vertical",
-            "any"
-          ],
-          "type": "string"
-        },
-        "type": {
-          "description": "Element type",
-          "enum": [
-            "border",
-            "divider",
-            "frame",
-            "watermark",
-            "pattern",
-            "texture_overlay",
-            "decorative"
-          ],
-          "type": "string"
+          "description": "Additional style descriptors"
         }
       },
-      "required": [
-        "name"
-      ],
-      "type": "object"
+      "additionalProperties": true
     },
     "graphic_style": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Visual language for brand graphics and illustrations",
       "properties": {
-        "corner_radius": {
-          "description": "Default corner radius for rounded elements (e.g., '12px', '8px', 'sharp')",
-          "type": "string"
-        },
-        "stroke_style": {
-          "description": "Stroke end/join style",
-          "enum": [
-            "rounded",
-            "square",
-            "mixed",
-            "none"
-          ],
-          "type": "string"
-        },
-        "stroke_weight": {
-          "description": "Stroke weight (e.g., '2px', 'thin', 'bold')",
-          "type": "string"
-        },
         "style_type": {
-          "description": "Primary graphic style",
+          "type": "string",
           "enum": [
             "flat_illustration",
             "geometric",
@@ -789,78 +1107,173 @@
             "isometric",
             "photographic_composite"
           ],
-          "type": "string"
+          "description": "Primary graphic style"
+        },
+        "stroke_style": {
+          "type": "string",
+          "enum": [
+            "rounded",
+            "square",
+            "mixed",
+            "none"
+          ],
+          "description": "Stroke end/join style"
+        },
+        "stroke_weight": {
+          "type": "string",
+          "description": "Stroke weight (e.g., '2px', 'thin', 'bold')"
+        },
+        "corner_radius": {
+          "type": "string",
+          "description": "Default corner radius for graphic and illustration elements (e.g., '12px', '8px', 'sharp'). For UI component radii (buttons, cards, inputs), see visual_guidelines.border_radius."
         },
         "tags": {
-          "description": "Additional style descriptors",
+          "type": "array",
           "items": {
             "type": "string"
           },
-          "type": "array"
+          "description": "Additional style descriptors"
         }
       },
-      "type": "object"
-    },
-    "hex_color": {
-      "description": "A single hex color value",
-      "pattern": "^#[0-9A-Fa-f]{6}$",
-      "type": "string"
+      "additionalProperties": true
     },
-    "house": {
-      "additionalProperties": true,
-      "description": "Corporate or organizational entity that owns brands",
+    "border_radius": {
+      "type": "object",
+      "description": "Named border radius presets for UI components and layout elements. One of the most visible brand differentiators \u2014 Airbnb uses generous 20px, Stripe uses precise 4\u20138px, Spotify uses pill/999px.",
       "properties": {
-        "architecture": {
-          "description": "Brand architecture model: branded_house (Google), house_of_brands (P&G), hybrid (Nike)",
-          "enum": [
-            "branded_house",
-            "house_of_brands",
-            "hybrid"
-          ],
-          "type": "string"
+        "none": {
+          "type": "string",
+          "description": "Explicitly sharp corners (e.g., '0')"
         },
-        "domain": {
-          "$ref": "#/definitions/domain",
-          "description": "The house's domain where brand.json is hosted"
+        "default": {
+          "type": "string",
+          "description": "Default border radius for UI components (e.g., '8px', '12px', '0'). For graphic/illustration elements, see graphic_style.corner_radius."
         },
-        "name": {
-          "description": "Primary display name of the house",
-          "minLength": 1,
-          "type": "string"
+        "small": {
+          "type": "string",
+          "description": "Small border radius for compact elements (e.g., '4px')"
         },
-        "names": {
-          "description": "Localized house names including legal name, stock symbol, etc.",
-          "items": {
-            "$ref": "#/definitions/localized_name"
-          },
-          "type": "array"
+        "large": {
+          "type": "string",
+          "description": "Large border radius for cards and containers (e.g., '16px', '24px')"
+        },
+        "pill": {
+          "type": "string",
+          "description": "Fully rounded / pill shape (e.g., '999px')"
         }
       },
-      "required": [
-        "domain",
-        "name"
-      ],
-      "type": "object"
+      "additionalProperties": {
+        "type": "string"
+      }
     },
-    "iconography": {
-      "additionalProperties": true,
-      "description": "Icon style system and usage rules",
+    "elevation": {
+      "type": "object",
+      "description": "Named shadow/elevation levels. Brands use elevation as identity \u2014 from Stripe's blue-tinted multi-layer shadows to Apple's single diffuse shadow. Values are CSS box-shadow syntax.",
       "properties": {
-        "corner_style": {
-          "description": "Corner style for icon paths",
-          "enum": [
-            "rounded",
-            "square",
-            "mixed"
-          ],
-          "type": "string"
+        "none": {
+          "type": "string",
+          "description": "No shadow (e.g., 'none')"
         },
-        "stroke_weight": {
-          "description": "Icon stroke weight (e.g., '2px', '1.5px')",
-          "type": "string"
+        "subtle": {
+          "type": "string",
+          "description": "Subtle shadow for slight lift (e.g., '0 1px 2px rgba(0,0,0,0.05)')"
+        },
+        "card": {
+          "type": "string",
+          "description": "Card-level shadow (e.g., '0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1)')"
+        },
+        "modal": {
+          "type": "string",
+          "description": "Modal/overlay shadow (e.g., '0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1)')"
+        }
+      },
+      "additionalProperties": {
+        "type": "string"
+      }
+    },
+    "spacing": {
+      "type": "object",
+      "description": "Spacing system for consistent layout rhythm. Most design systems use an 8px base grid.",
+      "properties": {
+        "unit": {
+          "type": "string",
+          "description": "Base grid unit this scale was designed from (e.g., '8px', '4px'). Informational \u2014 agents should use the named scale values, not compute from this."
+        },
+        "scale": {
+          "type": "object",
+          "description": "Named spacing scale built from the base unit",
+          "properties": {
+            "xs": {
+              "type": "string",
+              "description": "Extra small spacing (e.g., '4px')"
+            },
+            "sm": {
+              "type": "string",
+              "description": "Small spacing (e.g., '8px')"
+            },
+            "md": {
+              "type": "string",
+              "description": "Medium spacing (e.g., '16px')"
+            },
+            "lg": {
+              "type": "string",
+              "description": "Large spacing (e.g., '24px')"
+            },
+            "xl": {
+              "type": "string",
+              "description": "Extra large spacing (e.g., '32px')"
+            },
+            "2xl": {
+              "type": "string",
+              "description": "Section-level spacing (e.g., '48px', '64px')"
+            }
+          },
+          "additionalProperties": {
+            "type": "string"
+          }
+        }
+      },
+      "additionalProperties": false
+    },
+    "brand_shapes": {
+      "type": "object",
+      "description": "Distinctive shapes used as part of brand visual identity",
+      "properties": {
+        "primary_shape": {
+          "type": "string",
+          "description": "Primary brand shape (e.g., 'rounded_rectangle', 'circle', 'hexagon')"
+        },
+        "secondary_shapes": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "Secondary shapes in the brand vocabulary"
         },
+        "usage": {
+          "type": "object",
+          "description": "Shape usage rules",
+          "properties": {
+            "max_per_layout": {
+              "type": "integer",
+              "description": "Maximum distinct shapes per layout"
+            },
+            "overlap_allowed": {
+              "type": "boolean",
+              "description": "Whether shapes may overlap"
+            }
+          },
+          "additionalProperties": true
+        }
+      },
+      "additionalProperties": true
+    },
+    "iconography": {
+      "type": "object",
+      "description": "Icon style system and usage rules",
+      "properties": {
         "style": {
-          "description": "Icon rendering style",
+          "type": "string",
           "enum": [
             "outline",
             "filled",
@@ -869,186 +1282,233 @@
             "glyph",
             "hand_drawn"
           ],
-          "type": "string"
+          "description": "Icon rendering style"
+        },
+        "stroke_weight": {
+          "type": "string",
+          "description": "Icon stroke weight (e.g., '2px', '1.5px')"
+        },
+        "corner_style": {
+          "type": "string",
+          "enum": [
+            "rounded",
+            "square",
+            "mixed"
+          ],
+          "description": "Corner style for icon paths"
         },
         "usage": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Icon usage rules",
           "properties": {
             "max_per_frame": {
-              "description": "Maximum icons per creative frame",
-              "type": "integer"
+              "type": "integer",
+              "description": "Maximum icons per creative frame"
             },
             "size_ratio": {
-              "description": "Icon-to-layout size ratio (e.g., '1:8')",
-              "type": "string"
+              "type": "string",
+              "description": "Icon-to-layout size ratio (e.g., '1:8')"
             }
           },
-          "type": "object"
+          "additionalProperties": true
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "keller_type": {
-      "description": "Brand architecture type from Keller's theory. master: primary brand of house. sub_brand: carries parent name (Nike SB). endorsed: independent identity backed by parent (Air Jordan 'by Nike'). independent: operates separately (Converse under Nike, Inc.)",
-      "enum": [
-        "master",
-        "sub_brand",
-        "endorsed",
-        "independent"
-      ],
-      "type": "string"
-    },
-    "localized_name": {
-      "additionalProperties": {
-        "minLength": 1,
-        "type": "string"
+    "composition_rules": {
+      "type": "object",
+      "description": "Layout composition rules including overlays, textures, and backgrounds",
+      "properties": {
+        "overlays": {
+          "type": "object",
+          "description": "Graphic overlay rules",
+          "properties": {
+            "gradient_style": {
+              "type": "string",
+              "enum": [
+                "linear",
+                "radial",
+                "conic",
+                "none"
+              ],
+              "description": "Gradient type for overlays"
+            },
+            "gradient_direction": {
+              "type": "string",
+              "description": "Gradient direction (e.g., '45deg', 'to-bottom-right')"
+            },
+            "opacity": {
+              "type": "string",
+              "description": "Overlay opacity (e.g., '70%')"
+            }
+          },
+          "additionalProperties": true
+        },
+        "texture": {
+          "type": "object",
+          "description": "Texture treatment rules",
+          "properties": {
+            "style": {
+              "type": "string",
+              "enum": [
+                "none",
+                "subtle_grain",
+                "noise",
+                "paper",
+                "fabric",
+                "concrete"
+              ],
+              "description": "Texture style applied to creative assets"
+            },
+            "intensity": {
+              "type": "string",
+              "enum": [
+                "low",
+                "medium",
+                "high"
+              ],
+              "description": "Texture intensity"
+            }
+          },
+          "additionalProperties": true
+        },
+        "backgrounds": {
+          "type": "object",
+          "description": "Background treatment rules",
+          "properties": {
+            "types_allowed": {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "solid_color",
+                  "gradient",
+                  "blurred_photo",
+                  "image",
+                  "video",
+                  "pattern",
+                  "transparent"
+                ]
+              },
+              "description": "Permitted background types"
+            }
+          },
+          "additionalProperties": true
+        }
       },
-      "description": "A localized name with BCP 47 locale code key (e.g., 'en_US', 'fr_CA', 'zh_CN') and name value. Bare language codes ('en') are accepted as wildcards for backwards compatibility.",
-      "maxProperties": 1,
-      "minProperties": 1,
-      "type": "object"
+      "additionalProperties": true
     },
-    "logo": {
-      "additionalProperties": true,
-      "description": "Brand logo asset with structured fields for orientation, background compatibility, and variant type",
+    "colorway": {
+      "type": "object",
+      "description": "A named color pairing that defines how colors work together. Colorways ensure foreground/background combinations are always on-brand and accessible.",
       "properties": {
-        "background": {
-          "description": "Background compatibility. dark-bg: use on dark backgrounds, light-bg: use on light backgrounds, transparent-bg: has transparent background",
-          "enum": [
-            "dark-bg",
-            "light-bg",
-            "transparent-bg"
-          ],
-          "type": "string"
+        "name": {
+          "type": "string",
+          "description": "Colorway name (e.g., 'primary', 'inverted', 'subtle')"
         },
-        "height": {
-          "description": "Height in pixels",
-          "type": "integer"
+        "foreground": {
+          "$ref": "#/definitions/hex_color"
         },
-        "orientation": {
-          "description": "Logo aspect ratio orientation. square: ~1:1, horizontal: wide, vertical: tall, stacked: vertically arranged elements",
-          "enum": [
-            "square",
-            "horizontal",
-            "vertical",
-            "stacked"
-          ],
-          "type": "string"
+        "background": {
+          "$ref": "#/definitions/hex_color"
         },
-        "tags": {
-          "description": "Additional semantic tags for custom categorization beyond the standard orientation, background, and variant fields",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
+        "accent": {
+          "$ref": "#/definitions/hex_color"
         },
-        "url": {
-          "description": "URL to the logo asset",
-          "format": "uri",
-          "type": "string"
+        "border": {
+          "$ref": "#/definitions/hex_color"
         },
-        "usage": {
-          "description": "Human-readable description of when to use this logo variant (e.g., 'Primary logo for use on light backgrounds')",
-          "type": "string"
+        "cta_foreground": {
+          "$ref": "#/definitions/hex_color",
+          "description": "CTA text/icon color, if different from foreground"
         },
-        "variant": {
-          "description": "Logo variant type. primary: main logo, secondary: alternative, icon: symbol only, wordmark: text only, full-lockup: complete logo",
-          "enum": [
-            "primary",
-            "secondary",
-            "icon",
-            "wordmark",
-            "full-lockup"
-          ],
-          "type": "string"
+        "cta_background": {
+          "$ref": "#/definitions/hex_color",
+          "description": "CTA button/container color, if different from accent"
         },
-        "width": {
-          "description": "Width in pixels",
-          "type": "integer"
+        "channels": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "Channels or contexts where this colorway applies (e.g., 'online', 'print', 'pos', 'social', 'outdoor'). Omit for universal colorways."
         }
       },
       "required": [
-        "url"
+        "name",
+        "foreground",
+        "background"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "logo_placement": {
-      "additionalProperties": true,
-      "description": "Logo placement and clear space rules for automated creative production",
+    "type_scale_entry": {
+      "type": "object",
+      "description": "A single entry in the type scale",
       "properties": {
-        "background_contrast": {
-          "description": "Permitted background contrast behind logo",
-          "enum": [
-            "light_only",
-            "dark_only",
-            "any"
-          ],
-          "type": "string"
+        "font": {
+          "type": "string",
+          "description": "Font reference. Use a key from the fonts object (e.g., 'primary', 'secondary') to reference a defined font role, or a literal CSS font-family string as a fallback."
         },
-        "min_clear_space": {
-          "description": "Minimum clear space around the logo, expressed as a multiple of logo height (e.g., '0.5x', '1x') or fixed value (e.g., '16px')",
-          "type": "string"
+        "size": {
+          "type": "string",
+          "description": "Font size (e.g., '48px', '2rem')"
         },
-        "min_height": {
-          "description": "Minimum logo height to maintain legibility (e.g., '40px', '24px')",
-          "type": "string"
+        "weight": {
+          "type": "string",
+          "description": "Font weight (e.g., '700', 'bold')"
         },
-        "preferred_position": {
-          "description": "Preferred logo position in layouts",
+        "line_height": {
+          "type": "string",
+          "description": "Line height (e.g., '1.2', '56px')"
+        },
+        "letter_spacing": {
+          "type": "string",
+          "description": "Letter spacing (e.g., '-0.02em', '0.5px')"
+        },
+        "text_transform": {
+          "type": "string",
           "enum": [
-            "top-left",
-            "top-center",
-            "top-right",
-            "bottom-left",
-            "bottom-center",
-            "bottom-right",
-            "center"
+            "none",
+            "uppercase",
+            "lowercase",
+            "capitalize"
           ],
-          "type": "string"
+          "description": "Text transformation"
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
     "motion_guidelines": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Motion and animation rules for video, animated display, and interactive formats",
       "properties": {
+        "transition_style": {
+          "type": "string",
+          "enum": [
+            "cut",
+            "dissolve",
+            "slide",
+            "wipe",
+            "zoom",
+            "fade"
+          ],
+          "description": "Primary transition style between scenes"
+        },
         "animation_speed": {
-          "description": "Overall animation pacing",
+          "type": "string",
           "enum": [
             "slow",
             "moderate",
             "fast"
           ],
-          "type": "string"
+          "description": "Overall animation pacing"
         },
         "easing": {
-          "description": "Default easing function (e.g., 'ease-in-out', 'spring', 'linear')",
-          "type": "string"
-        },
-        "kinetic_typography": {
-          "description": "Whether animated/kinetic typography is allowed",
-          "type": "boolean"
+          "type": "string",
+          "description": "Default easing function (e.g., 'ease-in-out', 'spring', 'linear')"
         },
-        "pacing": {
-          "description": "Overall editing rhythm",
-          "enum": [
-            "lingering",
-            "moderate",
-            "fast_cuts"
-          ],
-          "type": "string"
-        },
-        "tags": {
-          "description": "Additional motion style descriptors",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "text_entrance": {
-          "description": "How text enters the frame",
+        "text_entrance": {
+          "type": "string",
           "enum": [
             "fade",
             "typewriter",
@@ -1057,621 +1517,592 @@
             "scale",
             "none"
           ],
-          "type": "string"
+          "description": "How text enters the frame"
         },
-        "transition_style": {
-          "description": "Primary transition style between scenes",
+        "pacing": {
+          "type": "string",
           "enum": [
-            "cut",
-            "dissolve",
-            "slide",
-            "wipe",
-            "zoom",
-            "fade"
+            "lingering",
+            "moderate",
+            "fast_cuts"
           ],
-          "type": "string"
+          "description": "Overall editing rhythm"
+        },
+        "kinetic_typography": {
+          "type": "boolean",
+          "description": "Whether animated/kinetic typography is allowed"
+        },
+        "tags": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "Additional motion style descriptors"
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "photography_style": {
-      "additionalProperties": true,
-      "description": "Photography style rules for generative creative systems. Defines how brand photography should look when selected or generated.",
+    "logo_placement": {
+      "type": "object",
+      "description": "Logo placement and clear space rules for automated creative production",
       "properties": {
-        "color_temperature": {
-          "description": "Overall color temperature of photography",
+        "preferred_position": {
+          "type": "string",
           "enum": [
-            "warm",
-            "neutral",
-            "cool"
+            "top-left",
+            "top-center",
+            "top-right",
+            "bottom-left",
+            "bottom-center",
+            "bottom-right",
+            "center"
           ],
-          "type": "string"
+          "description": "Preferred logo position in layouts"
         },
-        "contrast": {
-          "description": "Contrast level in photography",
+        "min_clear_space": {
+          "type": "string",
+          "description": "Minimum clear space around the logo, expressed as a multiple of logo height (e.g., '0.5x', '1x') or fixed value (e.g., '16px')"
+        },
+        "min_height": {
+          "type": "string",
+          "description": "Minimum logo height to maintain legibility (e.g., '40px', '24px')"
+        },
+        "background_contrast": {
+          "type": "string",
           "enum": [
-            "low",
-            "medium",
-            "high"
+            "light_only",
+            "dark_only",
+            "any"
           ],
-          "type": "string"
+          "description": "Permitted background contrast behind logo"
+        }
+      },
+      "additionalProperties": true
+    },
+    "graphic_element": {
+      "type": "object",
+      "description": "A reusable decorative or structural visual element that is part of the brand identity (e.g., torn paper edges, watermarks, dividers, background patterns)",
+      "properties": {
+        "name": {
+          "type": "string",
+          "description": "Element name (e.g., 'Paper Tear', 'Brand Watermark', 'Section Divider')"
         },
-        "depth_of_field": {
-          "description": "Depth of field preference. shallow: blurred background with subject isolation, deep: everything in focus",
+        "type": {
+          "type": "string",
           "enum": [
-            "shallow",
-            "medium",
-            "deep"
+            "border",
+            "divider",
+            "frame",
+            "watermark",
+            "pattern",
+            "texture_overlay",
+            "decorative"
           ],
-          "type": "string"
-        },
-        "framing": {
-          "additionalProperties": true,
-          "description": "Camera framing rules",
-          "properties": {
-            "crop_style": {
-              "description": "Cropping convention (e.g., 'waist-up', 'full-body', 'close-up', 'wide')",
-              "type": "string"
-            },
-            "perspective": {
-              "description": "Camera perspective (e.g., 'eye-level', 'overhead', 'low-angle')",
-              "type": "string"
-            },
-            "subject_position": {
-              "description": "Where the subject sits in frame (e.g., 'center', 'center-left', 'rule-of-thirds')",
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "lighting": {
-          "description": "Lighting style (e.g., 'soft daylight', 'studio', 'golden hour', 'high-key', 'low-key')",
-          "type": "string"
+          "description": "Element type"
         },
-        "preferred_aspect_ratios": {
-          "description": "Preferred aspect ratios for brand photography (e.g., '16:9', '4:5', '1:1')",
-          "items": {
-            "pattern": "^\\d+:\\d+$",
-            "type": "string"
-          },
-          "type": "array"
+        "description": {
+          "type": "string",
+          "description": "How the element is used in layouts"
         },
-        "realism": {
-          "description": "Level of photographic realism",
+        "orientation": {
+          "type": "string",
           "enum": [
-            "natural",
-            "stylized",
-            "hyperreal",
-            "abstract"
+            "horizontal",
+            "vertical",
+            "any"
           ],
-          "type": "string"
+          "description": "Preferred orientation when used in layouts"
         },
-        "subject": {
-          "additionalProperties": true,
-          "description": "Subject matter guidelines",
-          "properties": {
-            "people": {
-              "additionalProperties": true,
-              "description": "People photography guidelines",
-              "properties": {
-                "age_range": {
-                  "description": "Target age range (e.g., '20-35')",
-                  "type": "string"
-                },
-                "diversity": {
-                  "description": "Diversity representation (e.g., 'mixed', 'varied')",
-                  "type": "string"
-                },
-                "mood": {
-                  "description": "Mood descriptors (e.g., ['confident', 'relaxed'])",
-                  "items": {
-                    "type": "string"
-                  },
-                  "type": "array"
-                }
-              },
-              "type": "object"
-            },
-            "product_focus": {
-              "description": "How products are shown",
-              "enum": [
-                "in-use",
-                "isolated",
-                "lifestyle",
-                "detail"
-              ],
-              "type": "string"
-            },
-            "setting": {
-              "description": "Environmental context for photography (e.g., 'indoor', 'outdoor', 'studio', 'urban', 'nature', 'workplace')",
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "tags": {
-          "description": "Additional style descriptors",
+        "colors": {
+          "type": "array",
           "items": {
-            "type": "string"
+            "$ref": "#/definitions/hex_color"
           },
-          "type": "array"
+          "description": "Colors this element may appear in"
+        },
+        "max_per_layout": {
+          "type": "integer",
+          "description": "Maximum instances per layout"
         }
       },
-      "type": "object"
+      "required": [
+        "name"
+      ],
+      "additionalProperties": true
     },
-    "product_catalog": {
-      "additionalProperties": true,
-      "description": "Product catalog for e-commerce brands",
+    "asset_library": {
+      "type": "object",
+      "description": "A managed asset library (icon set, illustration system, image collection). The URL is for human access; agent-facing DAM integration is under investigation.",
       "properties": {
-        "agentic_checkout": {
-          "description": "Agentic checkout endpoint configuration",
-          "properties": {
-            "endpoint": {
-              "description": "Base URL for checkout session API",
-              "format": "uri",
-              "type": "string"
-            },
-            "spec": {
-              "description": "Checkout API specification",
-              "enum": [
-                "openai_agentic_checkout_v1"
-              ],
-              "type": "string"
-            },
-            "supported_payment_providers": {
-              "description": "Payment providers supported by this checkout endpoint",
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
-            }
-          },
-          "required": [
-            "endpoint",
-            "spec"
-          ],
-          "type": "object"
-        },
-        "categories": {
-          "description": "Product categories available in the catalog",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
+        "name": {
+          "type": "string",
+          "description": "Display name of the asset library"
         },
-        "feed_format": {
-          "description": "Format of the product feed",
+        "type": {
+          "type": "string",
           "enum": [
-            "google_merchant_center",
-            "facebook_catalog",
-            "openai_product_feed",
-            "custom"
+            "icon_set",
+            "illustration_system",
+            "image_library",
+            "video_library",
+            "template_library"
           ],
-          "type": "string"
+          "description": "Type of asset library"
         },
-        "feed_url": {
-          "description": "URL to product catalog feed",
+        "url": {
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL to the asset library (for human access)"
         },
-        "last_updated": {
-          "description": "When the product catalog was last updated",
-          "format": "date-time",
-          "type": "string"
+        "description": {
+          "type": "string",
+          "description": "Description of the library contents and usage"
         },
-        "update_frequency": {
-          "description": "How frequently the product catalog is updated",
-          "enum": [
-            "realtime",
-            "hourly",
-            "daily",
-            "weekly"
-          ],
-          "type": "string"
+        "color_guide": {
+          "type": "object",
+          "description": "Color guide for the asset library defining roles and palettes",
+          "properties": {
+            "roles": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Named color roles used in the library (e.g., base, shadow_1, highlight_1, stroke)"
+            },
+            "palettes": {
+              "type": "array",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "name": {
+                    "type": "string",
+                    "description": "Palette name"
+                  },
+                  "colors": {
+                    "type": "object",
+                    "additionalProperties": {
+                      "$ref": "#/definitions/hex_color"
+                    },
+                    "description": "Map of role names to hex color values"
+                  }
+                },
+                "required": [
+                  "name",
+                  "colors"
+                ],
+                "additionalProperties": true
+              },
+              "description": "Named color palettes mapping roles to specific colors"
+            }
+          },
+          "additionalProperties": true
         }
       },
       "required": [
-        "feed_url"
+        "name",
+        "url"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "property": {
-      "additionalProperties": true,
-      "description": "A digital property owned by a brand",
+    "visual_guidelines": {
+      "type": "object",
+      "description": "Structured visual rules for generative creative systems. Defines how brand photography, graphics, typography, and composition should be produced to maintain brand consistency at scale.",
       "properties": {
-        "identifier": {
-          "description": "Property identifier - domain for websites, bundle ID for apps",
-          "minLength": 1,
-          "type": "string"
+        "photography": {
+          "$ref": "#/definitions/photography_style"
         },
-        "primary": {
-          "default": false,
-          "description": "Whether this is the primary property for the brand",
-          "type": "boolean"
+        "graphic_style": {
+          "$ref": "#/definitions/graphic_style"
         },
-        "region": {
-          "description": "ISO 3166-1 alpha-2 country code or 'global'",
-          "pattern": "^([A-Z]{2}|global)$",
-          "type": "string"
+        "shapes": {
+          "$ref": "#/definitions/brand_shapes"
         },
-        "store": {
-          "description": "App store for mobile/CTV apps",
-          "enum": [
-            "apple",
-            "google",
-            "amazon",
-            "roku",
-            "samsung",
-            "lg",
-            "other"
-          ],
-          "type": "string"
+        "iconography": {
+          "$ref": "#/definitions/iconography"
         },
-        "type": {
-          "description": "Property type",
-          "enum": [
-            "website",
-            "mobile_app",
-            "ctv_app",
-            "desktop_app",
-            "dooh",
-            "podcast",
-            "radio",
-            "streaming_audio"
-          ],
-          "type": "string"
-        }
-      },
-      "required": [
-        "type",
-        "identifier"
-      ],
-      "type": "object"
-    },
-    "rights_agent": {
-      "additionalProperties": true,
-      "description": "Rights licensing agent for this brand. Provides discovery, pricing, and acquisition of licensable rights via MCP. Use get_rights and acquire_rights tasks to interact.",
-      "properties": {
-        "available_uses": {
-          "description": "Rights uses available for licensing through this agent",
+        "composition": {
+          "$ref": "#/definitions/composition_rules"
+        },
+        "border_radius": {
+          "$ref": "#/definitions/border_radius"
+        },
+        "elevation": {
+          "$ref": "#/definitions/elevation"
+        },
+        "spacing": {
+          "$ref": "#/definitions/spacing"
+        },
+        "graphic_elements": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/graphic_element"
+          },
+          "description": "Reusable decorative elements that are part of the brand visual identity (e.g., torn paper edges, watermarks, dividers)"
+        },
+        "motion": {
+          "$ref": "#/definitions/motion_guidelines"
+        },
+        "logo_placement": {
+          "$ref": "#/definitions/logo_placement"
+        },
+        "colorways": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/colorway"
+          },
+          "description": "Named color pairings for consistent foreground/background combinations"
+        },
+        "type_scale": {
+          "type": "object",
+          "description": "Typography scale defining sizes and weights for different text roles. When sizes are in px, use base_width to indicate the reference canvas.",
+          "properties": {
+            "base_width": {
+              "type": "string",
+              "description": "Reference canvas width these sizes were designed for (e.g., '1080px'). Generative systems should scale proportionally for other canvas sizes."
+            },
+            "heading": {
+              "$ref": "#/definitions/type_scale_entry"
+            },
+            "subheading": {
+              "$ref": "#/definitions/type_scale_entry"
+            },
+            "body": {
+              "$ref": "#/definitions/type_scale_entry"
+            },
+            "caption": {
+              "$ref": "#/definitions/type_scale_entry"
+            },
+            "cta": {
+              "$ref": "#/definitions/type_scale_entry"
+            }
+          },
+          "additionalProperties": {
+            "$ref": "#/definitions/type_scale_entry"
+          }
+        },
+        "asset_libraries": {
+          "type": "array",
           "items": {
-            "$ref": "enums/right-use.json"
+            "$ref": "#/definitions/asset_library"
           },
-          "minItems": 1,
-          "type": "array"
+          "description": "References to managed asset libraries (icon sets, illustration systems, image collections). URLs are intended for human access; agent-facing DAM integration is under investigation."
         },
-        "countries": {
-          "description": "Countries where rights are available (ISO 3166-1 alpha-2)",
+        "restrictions": {
+          "type": "array",
           "items": {
-            "pattern": "^[A-Z]{2}$",
             "type": "string"
           },
-          "type": "array"
+          "description": "Visual prohibitions and guardrails (e.g., 'Never use black backgrounds', 'Do not crop the logo', 'No stock photography of people on phones')"
+        }
+      },
+      "additionalProperties": true
+    },
+    "contact": {
+      "type": "object",
+      "description": "Contact information",
+      "properties": {
+        "name": {
+          "type": "string",
+          "minLength": 1,
+          "maxLength": 255
         },
-        "id": {
-          "description": "Agent identifier",
-          "pattern": "^[a-z0-9_]+$",
-          "type": "string"
+        "email": {
+          "type": "string",
+          "format": "email",
+          "maxLength": 255
         },
-        "right_types": {
-          "description": "Types of rights available",
-          "items": {
-            "$ref": "enums/right-type.json"
-          },
-          "minItems": 1,
-          "type": "array"
+        "domain": {
+          "$ref": "#/definitions/domain"
+        }
+      },
+      "required": [
+        "name"
+      ],
+      "additionalProperties": true
+    }
+  },
+  "oneOf": [
+    {
+      "type": "object",
+      "title": "Authoritative Location Redirect",
+      "description": "Redirects to a hosted brand.json file at another URL",
+      "properties": {
+        "$schema": {
+          "type": "string"
         },
-        "url": {
-          "description": "Rights agent MCP endpoint URL",
+        "authoritative_location": {
+          "type": "string",
           "format": "uri",
           "pattern": "^https://",
-          "type": "string"
+          "description": "HTTPS URL of the authoritative brand.json file"
+        },
+        "last_updated": {
+          "type": "string",
+          "format": "date-time"
         }
       },
       "required": [
-        "url",
-        "id",
-        "available_uses"
+        "authoritative_location"
       ],
-      "type": "object"
+      "additionalProperties": false
     },
-    "type_scale_entry": {
-      "additionalProperties": true,
-      "description": "A single entry in the type scale",
+    {
+      "type": "object",
+      "title": "House Redirect",
+      "description": "Redirects to the house domain that contains the full brand portfolio",
       "properties": {
-        "font": {
-          "description": "Font family reference (e.g., 'primary', 'secondary', or a specific family name)",
-          "type": "string"
-        },
-        "letter_spacing": {
-          "description": "Letter spacing (e.g., '-0.02em', '0.5px')",
+        "$schema": {
           "type": "string"
         },
-        "line_height": {
-          "description": "Line height (e.g., '1.2', '56px')",
-          "type": "string"
+        "house": {
+          "$ref": "#/definitions/domain",
+          "description": "House domain to fetch brand portfolio from"
         },
-        "size": {
-          "description": "Font size (e.g., '48px', '2rem')",
-          "type": "string"
+        "region": {
+          "type": "string",
+          "pattern": "^[A-Z]{2}$",
+          "description": "ISO 3166-1 alpha-2 country code if this is a regional domain"
         },
-        "text_transform": {
-          "description": "Text transformation",
-          "enum": [
-            "none",
-            "uppercase",
-            "lowercase",
-            "capitalize"
-          ],
+        "note": {
           "type": "string"
         },
-        "weight": {
-          "description": "Font weight (e.g., '700', 'bold')",
-          "type": "string"
+        "last_updated": {
+          "type": "string",
+          "format": "date-time"
         }
       },
-      "type": "object"
+      "required": [
+        "house"
+      ],
+      "additionalProperties": false
     },
-    "visual_guidelines": {
-      "additionalProperties": true,
-      "description": "Structured visual rules for generative creative systems. Defines how brand photography, graphics, typography, and composition should be produced to maintain brand consistency at scale.",
+    {
+      "type": "object",
+      "title": "Brand Agent",
+      "description": "Brand represented by agents that provide brand info via MCP",
       "properties": {
-        "asset_libraries": {
-          "description": "References to managed asset libraries (icon sets, illustration systems, image collections). URLs are intended for human access; agent-facing DAM integration is under investigation.",
-          "items": {
-            "$ref": "#/definitions/asset_library"
-          },
-          "type": "array"
+        "$schema": {
+          "type": "string"
         },
-        "colorways": {
-          "description": "Named color pairings for consistent foreground/background combinations",
-          "items": {
-            "$ref": "#/definitions/colorway"
-          },
-          "type": "array"
+        "version": {
+          "type": "string"
         },
-        "composition": {
-          "$ref": "#/definitions/composition_rules"
+        "agents": {
+          "$ref": "#/definitions/agents"
         },
-        "graphic_elements": {
-          "description": "Reusable decorative elements that are part of the brand visual identity (e.g., torn paper edges, watermarks, dividers)",
-          "items": {
-            "$ref": "#/definitions/graphic_element"
-          },
-          "type": "array"
+        "brand_agent": {
+          "$ref": "#/definitions/brand_agent",
+          "deprecated": true
         },
-        "graphic_style": {
-          "$ref": "#/definitions/graphic_style"
+        "contact": {
+          "$ref": "#/definitions/contact"
         },
-        "iconography": {
-          "$ref": "#/definitions/iconography"
+        "last_updated": {
+          "type": "string",
+          "format": "date-time"
+        }
+      },
+      "anyOf": [
+        {
+          "required": [
+            "agents"
+          ]
         },
-        "logo_placement": {
-          "$ref": "#/definitions/logo_placement"
+        {
+          "required": [
+            "brand_agent"
+          ]
+        }
+      ],
+      "additionalProperties": false
+    },
+    {
+      "type": "object",
+      "title": "House Portfolio",
+      "description": "Full house/brand portfolio with hierarchy, creative assets, and properties",
+      "properties": {
+        "$schema": {
+          "type": "string"
         },
-        "motion": {
-          "$ref": "#/definitions/motion_guidelines"
+        "version": {
+          "type": "string"
         },
-        "photography": {
-          "$ref": "#/definitions/photography_style"
+        "house": {
+          "$ref": "#/definitions/house"
         },
-        "restrictions": {
-          "description": "Visual prohibitions and guardrails (e.g., 'Never use black backgrounds', 'Do not crop the logo', 'No stock photography of people on phones')",
+        "brands": {
+          "type": "array",
+          "description": "Brands owned by this house",
           "items": {
-            "type": "string"
+            "$ref": "#/definitions/brand"
           },
-          "type": "array"
+          "minItems": 1
         },
-        "shapes": {
-          "$ref": "#/definitions/brand_shapes"
+        "contact": {
+          "$ref": "#/definitions/contact"
         },
-        "type_scale": {
-          "additionalProperties": {
-            "$ref": "#/definitions/type_scale_entry"
-          },
-          "description": "Typography scale defining sizes and weights for different text roles. When sizes are in px, use base_width to indicate the reference canvas.",
-          "properties": {
-            "base_width": {
-              "description": "Reference canvas width these sizes were designed for (e.g., '1080px'). Generative systems should scale proportionally for other canvas sizes.",
-              "type": "string"
-            },
-            "body": {
-              "$ref": "#/definitions/type_scale_entry"
-            },
-            "caption": {
-              "$ref": "#/definitions/type_scale_entry"
-            },
-            "cta": {
-              "$ref": "#/definitions/type_scale_entry"
-            },
-            "heading": {
-              "$ref": "#/definitions/type_scale_entry"
+        "authorized_operators": {
+          "type": "array",
+          "description": "Entities authorized to represent brands from this house. Third parties (sellers, platforms) can verify an operator's authorization by checking this list. Operators are identified by domain.",
+          "items": {
+            "$ref": "#/definitions/authorized_operator"
+          }
+        },
+        "trademarks": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "properties": {
+              "registry": {
+                "type": "string"
+              },
+              "number": {
+                "type": "string"
+              },
+              "mark": {
+                "type": "string"
+              }
             },
-            "subheading": {
-              "$ref": "#/definitions/type_scale_entry"
-            }
-          },
-          "type": "object"
+            "required": [
+              "registry",
+              "number",
+              "mark"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "last_updated": {
+          "type": "string",
+          "format": "date-time"
         }
       },
-      "type": "object"
+      "required": [
+        "house",
+        "brands"
+      ],
+      "additionalProperties": false
     }
-  },
-  "description": "Brand identity and discovery file. Hosted at /.well-known/brand.json on house domains. Contains the full brand portfolio with identity, creative assets, and digital properties. Brands are identified by house + brand_id (like properties are identified by publisher + property_id). Supports variants: house portfolio (full brand data), brand agent (agent provides brand info via MCP), house redirect (pointer to house domain), or authoritative location redirect.",
+  ],
   "examples": [
     {
-      "$schema": "/schemas/3.0.0-rc.3/brand.json",
+      "$schema": "/schemas/latest/brand.json",
       "authoritative_location": "https://adcontextprotocol.org/brand/abc123/brand.json"
     },
     {
-      "$schema": "/schemas/3.0.0-rc.3/brand.json",
+      "$schema": "/schemas/latest/brand.json",
       "house": "nikeinc.com",
       "note": "Redirect to house domain for full brand portfolio"
     },
     {
-      "$schema": "/schemas/3.0.0-rc.3/brand.json",
-      "brand_agent": {
-        "id": "acme_brand_agent",
-        "url": "https://agent.acme.com/mcp"
-      },
-      "version": "1.0"
+      "$schema": "/schemas/latest/brand.json",
+      "version": "1.0",
+      "agents": [
+        {
+          "type": "brand",
+          "url": "https://agent.acme.com/mcp",
+          "id": "acme_brand"
+        }
+      ]
     },
     {
-      "$schema": "/schemas/3.0.0-rc.3/brand.json",
+      "$schema": "/schemas/latest/brand.json",
+      "version": "1.0",
+      "house": {
+        "domain": "pg.com",
+        "name": "Procter & Gamble",
+        "architecture": "house_of_brands",
+        "agents": [
+          {
+            "type": "governance",
+            "url": "https://agents.pg.com/governance",
+            "id": "pg_governance",
+            "description": "Brand safety and compliance for all P&G brands",
+            "jwks_uri": "https://agents.pg.com/.well-known/jwks.json",
+            "scope": [
+              "spend_authority",
+              "delivery_monitor",
+              "brand_safety"
+            ]
+          }
+        ]
+      },
       "brands": [
         {
-          "colors": {
-            "primary": "#FF6600",
-            "secondary": "#0066CC"
-          },
-          "contact": {
-            "email": "brands@pg.com"
-          },
-          "description": "Laundry detergent brand",
           "id": "tide",
-          "industries": [
-            "cpg"
-          ],
-          "keller_type": "master",
-          "logos": [
-            {
-              "background": "transparent-bg",
-              "orientation": "square",
-              "url": "https://cdn.pg.com/tide/logo-square.png",
-              "usage": "Primary logo for general use",
-              "variant": "primary"
-            },
-            {
-              "background": "dark-bg",
-              "orientation": "horizontal",
-              "url": "https://cdn.pg.com/tide/logo-horizontal-dark.png",
-              "usage": "Full lockup for dark backgrounds",
-              "variant": "full-lockup"
-            }
-          ],
+          "url": "https://tide.com",
           "names": [
             {
               "en_US": "Tide"
             },
             {
-              "es_MX": "Tide"
-            },
-            {
-              "zh_CN": "\u6c70\u6e0d"
-            }
-          ],
-          "properties": [
-            {
-              "identifier": "tide.com",
-              "primary": true,
-              "type": "website"
+              "es_MX": "Tide"
             },
             {
-              "identifier": "com.pg.tide",
-              "store": "apple",
-              "type": "mobile_app"
+              "zh_CN": "\u6c70\u6e0d"
             }
           ],
-          "tagline": [
+          "keller_type": "master",
+          "industries": [
+            "cpg"
+          ],
+          "description": "Laundry detergent brand",
+          "logos": [
             {
-              "en_US": "Tide's In, Dirt's Out"
+              "url": "https://cdn.pg.com/tide/logo-square.png",
+              "orientation": "square",
+              "background": "transparent-bg",
+              "variant": "primary",
+              "usage": "Primary logo for general use"
+            },
+            {
+              "url": "https://cdn.pg.com/tide/logo-horizontal-dark.png",
+              "orientation": "horizontal",
+              "background": "dark-bg",
+              "variant": "full-lockup",
+              "usage": "Full lockup for dark backgrounds"
             }
           ],
+          "colors": {
+            "primary": "#FF6600",
+            "secondary": "#0066CC",
+            "background": "#FFFFFF",
+            "text": "#1A1A1A",
+            "heading": "#FF6600",
+            "body": "#333333",
+            "label": "#666666",
+            "border": "#E5E5E5",
+            "divider": "#F0F0F0",
+            "surface_1": "#F9F9F9",
+            "surface_2": "#EFEFEF"
+          },
           "tone": {
+            "voice": "clean, fresh, trustworthy",
             "attributes": [
               "reliable",
               "family-friendly",
               "confident"
             ],
-            "donts": [
-              "Avoid technical jargon",
-              "Don't be overly serious"
-            ],
             "dos": [
               "Use simple, direct language",
               "Emphasize cleaning power"
             ],
-            "voice": "clean, fresh, trustworthy"
+            "donts": [
+              "Avoid technical jargon",
+              "Don't be overly serious"
+            ]
           },
-          "url": "https://tide.com",
+          "tagline": [
+            {
+              "en_US": "Tide's In, Dirt's Out"
+            }
+          ],
           "visual_guidelines": {
-            "colorways": [
-              {
-                "accent": "#0066CC",
-                "background": "#FF6600",
-                "foreground": "#FFFFFF",
-                "name": "primary"
-              },
-              {
-                "accent": "#0066CC",
-                "background": "#FFFFFF",
-                "border": "#FF6600",
-                "foreground": "#FF6600",
-                "name": "inverted"
-              }
-            ],
-            "composition": {
-              "backgrounds": {
-                "types_allowed": [
-                  "solid_color",
-                  "gradient",
-                  "blurred_photo"
-                ]
-              },
-              "overlays": {
-                "gradient_direction": "180deg",
-                "gradient_style": "linear",
-                "opacity": "60%"
-              },
-              "texture": {
-                "style": "none"
-              }
-            },
-            "graphic_style": {
-              "corner_radius": "12px",
-              "stroke_style": "rounded",
-              "stroke_weight": "2px",
-              "style_type": "flat_illustration"
-            },
-            "iconography": {
-              "corner_style": "rounded",
-              "stroke_weight": "2px",
-              "style": "outline",
-              "usage": {
-                "max_per_frame": 3,
-                "size_ratio": "1:8"
-              }
-            },
-            "logo_placement": {
-              "background_contrast": "any",
-              "min_clear_space": "0.5x",
-              "min_height": "32px",
-              "preferred_position": "bottom-right"
-            },
-            "motion": {
-              "animation_speed": "moderate",
-              "easing": "ease-in-out",
-              "kinetic_typography": false,
-              "pacing": "moderate",
-              "text_entrance": "fade",
-              "transition_style": "dissolve"
-            },
             "photography": {
+              "realism": "natural",
+              "lighting": "soft daylight",
               "color_temperature": "warm",
               "contrast": "medium",
               "depth_of_field": "medium",
-              "framing": {
-                "crop_style": "waist-up",
-                "perspective": "eye-level",
-                "subject_position": "center"
-              },
-              "lighting": "soft daylight",
-              "preferred_aspect_ratios": [
-                "16:9",
-                "4:5",
-                "1:1"
-              ],
-              "realism": "natural",
               "subject": {
                 "people": {
                   "age_range": "25-45",
@@ -1684,13 +2115,24 @@
                 },
                 "product_focus": "in-use",
                 "setting": "indoor"
-              }
+              },
+              "framing": {
+                "subject_position": "center",
+                "crop_style": "waist-up",
+                "perspective": "eye-level"
+              },
+              "preferred_aspect_ratios": [
+                "16:9",
+                "4:5",
+                "1:1"
+              ]
+            },
+            "graphic_style": {
+              "style_type": "flat_illustration",
+              "stroke_style": "rounded",
+              "stroke_weight": "2px",
+              "corner_radius": "12px"
             },
-            "restrictions": [
-              "Never place text over the product",
-              "Do not use black backgrounds",
-              "No stock photography of people on phones"
-            ],
             "shapes": {
               "primary_shape": "circle",
               "secondary_shapes": [
@@ -1701,191 +2143,244 @@
                 "overlap_allowed": false
               }
             },
+            "iconography": {
+              "style": "outline",
+              "stroke_weight": "2px",
+              "corner_style": "rounded",
+              "usage": {
+                "max_per_frame": 3,
+                "size_ratio": "1:8"
+              }
+            },
+            "composition": {
+              "overlays": {
+                "gradient_style": "linear",
+                "gradient_direction": "180deg",
+                "opacity": "60%"
+              },
+              "texture": {
+                "style": "none"
+              },
+              "backgrounds": {
+                "types_allowed": [
+                  "solid_color",
+                  "gradient",
+                  "blurred_photo"
+                ]
+              }
+            },
+            "border_radius": {
+              "none": "0",
+              "default": "12px",
+              "small": "4px",
+              "large": "20px",
+              "pill": "999px"
+            },
+            "elevation": {
+              "none": "none",
+              "subtle": "0 1px 3px rgba(0,0,0,0.08)",
+              "card": "0 4px 8px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.06)",
+              "modal": "0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.06)"
+            },
+            "spacing": {
+              "unit": "8px",
+              "scale": {
+                "xs": "4px",
+                "sm": "8px",
+                "md": "16px",
+                "lg": "24px",
+                "xl": "32px",
+                "2xl": "48px"
+              }
+            },
+            "motion": {
+              "transition_style": "dissolve",
+              "animation_speed": "moderate",
+              "easing": "ease-in-out",
+              "text_entrance": "fade",
+              "pacing": "moderate",
+              "kinetic_typography": false
+            },
+            "logo_placement": {
+              "preferred_position": "bottom-right",
+              "min_clear_space": "0.5x",
+              "min_height": "32px",
+              "background_contrast": "any"
+            },
+            "colorways": [
+              {
+                "name": "primary",
+                "foreground": "#FFFFFF",
+                "background": "#FF6600",
+                "accent": "#0066CC"
+              },
+              {
+                "name": "inverted",
+                "foreground": "#FF6600",
+                "background": "#FFFFFF",
+                "accent": "#0066CC",
+                "border": "#FF6600"
+              }
+            ],
             "type_scale": {
               "base_width": "1080px",
+              "heading": {
+                "font": "primary",
+                "size": "48px",
+                "weight": "700",
+                "line_height": "1.1",
+                "text_transform": "none"
+              },
+              "subheading": {
+                "font": "primary",
+                "size": "24px",
+                "weight": "600",
+                "line_height": "1.3"
+              },
               "body": {
                 "font": "secondary",
-                "line_height": "1.5",
                 "size": "16px",
-                "weight": "400"
+                "weight": "400",
+                "line_height": "1.5"
               },
               "cta": {
                 "font": "primary",
-                "letter_spacing": "0.05em",
                 "size": "18px",
+                "weight": "700",
                 "text_transform": "uppercase",
-                "weight": "700"
-              },
-              "heading": {
-                "font": "primary",
-                "line_height": "1.1",
-                "size": "48px",
-                "text_transform": "none",
-                "weight": "700"
-              },
-              "subheading": {
-                "font": "primary",
-                "line_height": "1.3",
-                "size": "24px",
-                "weight": "600"
+                "letter_spacing": "0.05em"
               }
+            },
+            "restrictions": [
+              "Never place text over the product",
+              "Do not use black backgrounds",
+              "No stock photography of people on phones"
+            ]
+          },
+          "properties": [
+            {
+              "type": "website",
+              "identifier": "tide.com",
+              "primary": true
+            },
+            {
+              "type": "mobile_app",
+              "store": "apple",
+              "identifier": "com.pg.tide"
             }
+          ],
+          "contact": {
+            "email": "brands@pg.com"
           }
         },
         {
-          "colors": {
-            "primary": "#00A0D2"
-          },
           "id": "pampers",
+          "url": "https://pampers.com",
+          "names": [
+            {
+              "en_US": "Pampers"
+            }
+          ],
+          "keller_type": "master",
           "industries": [
             "cpg"
           ],
-          "keller_type": "master",
           "logos": [
             {
-              "orientation": "horizontal",
               "url": "https://cdn.pg.com/pampers/logo.png",
+              "orientation": "horizontal",
               "variant": "primary"
             }
           ],
-          "names": [
-            {
-              "en_US": "Pampers"
-            }
-          ],
+          "colors": {
+            "primary": "#00A0D2"
+          },
           "properties": [
             {
+              "type": "website",
               "identifier": "pampers.com",
-              "primary": true,
-              "type": "website"
+              "primary": true
             }
-          ],
-          "url": "https://pampers.com"
+          ]
         }
       ],
       "contact": {
-        "email": "brands@pg.com",
-        "name": "P&G Brand Team"
-      },
-      "house": {
-        "architecture": "house_of_brands",
-        "domain": "pg.com",
-        "name": "Procter & Gamble"
+        "name": "P&G Brand Team",
+        "email": "brands@pg.com"
       },
-      "last_updated": "2026-01-15T10:00:00Z",
-      "version": "1.0"
+      "last_updated": "2026-01-15T10:00:00Z"
     },
     {
-      "$schema": "/schemas/3.0.0-rc.3/brand.json",
-      "authorized_operators": [
-        {
-          "brands": [
-            "nike",
-            "air_jordan"
-          ],
-          "countries": [
-            "US",
-            "GB",
-            "DE",
-            "FR"
-          ],
-          "domain": "wpp.com"
-        },
-        {
-          "brands": [
-            "nike"
-          ],
-          "countries": [
-            "JP"
-          ],
-          "domain": "dentsu.co.jp"
-        },
-        {
-          "brands": [
-            "*"
-          ],
-          "domain": "nike.com"
-        }
-      ],
+      "$schema": "/schemas/latest/brand.json",
+      "version": "1.0",
+      "house": {
+        "domain": "nikeinc.com",
+        "name": "Nike, Inc.",
+        "architecture": "hybrid"
+      },
       "brands": [
         {
-          "colors": {
-            "accent": "#FF6600",
-            "primary": "#111111"
-          },
           "id": "nike",
+          "url": "https://nike.com",
+          "names": [
+            {
+              "en_US": "Nike"
+            },
+            {
+              "zh_CN": "\u8010\u514b"
+            },
+            {
+              "ja_JP": "\u30ca\u30a4\u30ad"
+            }
+          ],
           "keller_type": "master",
           "logos": [
             {
-              "background": "dark-bg",
-              "orientation": "horizontal",
               "url": "https://cdn.nike.com/swoosh-dark.svg",
-              "usage": "Swoosh icon for dark backgrounds",
-              "variant": "icon"
+              "orientation": "horizontal",
+              "background": "dark-bg",
+              "variant": "icon",
+              "usage": "Swoosh icon for dark backgrounds"
             },
             {
-              "background": "light-bg",
-              "orientation": "horizontal",
               "url": "https://cdn.nike.com/logo-full.svg",
-              "usage": "Full logo with wordmark for light backgrounds",
-              "variant": "full-lockup"
+              "orientation": "horizontal",
+              "background": "light-bg",
+              "variant": "full-lockup",
+              "usage": "Full logo with wordmark for light backgrounds"
             }
           ],
-          "names": [
-            {
-              "en_US": "Nike"
-            },
-            {
-              "zh_CN": "\u8010\u514b"
-            },
+          "colors": {
+            "primary": "#111111",
+            "accent": "#FF6600"
+          },
+          "tone": "inspirational, bold, athletic",
+          "tagline": [
             {
-              "ja_JP": "\u30ca\u30a4\u30ad"
+              "en_US": "Just Do It"
             }
           ],
           "properties": [
             {
+              "type": "website",
               "identifier": "nike.com",
-              "primary": true,
-              "type": "website"
+              "primary": true
             },
             {
+              "type": "website",
               "identifier": "nike.cn",
-              "region": "CN",
-              "type": "website"
+              "region": "CN"
             },
             {
-              "identifier": "com.nike.omega",
+              "type": "mobile_app",
               "store": "apple",
-              "type": "mobile_app"
-            }
-          ],
-          "tagline": [
-            {
-              "en_US": "Just Do It"
+              "identifier": "com.nike.omega"
             }
-          ],
-          "tone": "inspirational, bold, athletic",
-          "url": "https://nike.com"
+          ]
         },
         {
-          "brand_agent": {
-            "id": "nike_dam",
-            "url": "https://dam.nike.com/mcp"
-          },
-          "colors": {
-            "primary": "#CE1141",
-            "secondary": "#111111"
-          },
           "id": "air_jordan",
-          "keller_type": "endorsed",
-          "logos": [
-            {
-              "background": "transparent-bg",
-              "orientation": "square",
-              "url": "https://cdn.nike.com/jumpman.svg",
-              "variant": "icon"
-            }
-          ],
+          "url": "https://jordan.com",
           "names": [
             {
               "en_US": "Air Jordan"
@@ -1897,202 +2392,143 @@
               "en_US": "Jumpman"
             }
           ],
+          "keller_type": "endorsed",
           "parent_brand": "nike",
+          "logos": [
+            {
+              "url": "https://cdn.nike.com/jumpman.svg",
+              "orientation": "square",
+              "background": "transparent-bg",
+              "variant": "icon"
+            }
+          ],
+          "colors": {
+            "primary": "#CE1141",
+            "secondary": "#111111"
+          },
           "properties": [
             {
+              "type": "website",
               "identifier": "jordan.com",
-              "primary": true,
-              "type": "website"
+              "primary": true
             },
             {
-              "identifier": "jumpman23.com",
-              "type": "website"
+              "type": "website",
+              "identifier": "jumpman23.com"
             }
           ],
-          "url": "https://jordan.com"
+          "brand_agent": {
+            "url": "https://dam.nike.com/mcp",
+            "id": "nike_dam"
+          }
         },
         {
           "id": "converse",
+          "url": "https://converse.com",
+          "names": [
+            {
+              "en_US": "Converse"
+            }
+          ],
           "keller_type": "independent",
           "logos": [
             {
-              "orientation": "square",
               "url": "https://cdn.converse.com/star.svg",
+              "orientation": "square",
               "variant": "icon"
             }
           ],
-          "names": [
-            {
-              "en_US": "Converse"
-            }
-          ],
           "properties": [
             {
+              "type": "website",
               "identifier": "converse.com",
-              "primary": true,
-              "type": "website"
+              "primary": true
             }
-          ],
-          "url": "https://converse.com"
-        }
-      ],
-      "house": {
-        "architecture": "hybrid",
-        "domain": "nikeinc.com",
-        "name": "Nike, Inc."
-      },
-      "last_updated": "2026-01-15T10:00:00Z",
-      "version": "1.0"
-    }
-  ],
-  "oneOf": [
-    {
-      "additionalProperties": false,
-      "description": "Redirects to a hosted brand.json file at another URL",
-      "properties": {
-        "$schema": {
-          "type": "string"
-        },
-        "authoritative_location": {
-          "description": "HTTPS URL of the authoritative brand.json file",
-          "format": "uri",
-          "pattern": "^https://",
-          "type": "string"
-        },
-        "last_updated": {
-          "format": "date-time",
-          "type": "string"
+          ]
         }
-      },
-      "required": [
-        "authoritative_location"
       ],
-      "title": "Authoritative Location Redirect",
-      "type": "object"
-    },
-    {
-      "additionalProperties": false,
-      "description": "Redirects to the house domain that contains the full brand portfolio",
-      "properties": {
-        "$schema": {
-          "type": "string"
-        },
-        "house": {
-          "$ref": "#/definitions/domain",
-          "description": "House domain to fetch brand portfolio from"
-        },
-        "last_updated": {
-          "format": "date-time",
-          "type": "string"
+      "authorized_operators": [
+        {
+          "domain": "wpp.com",
+          "brands": [
+            "nike",
+            "air_jordan"
+          ],
+          "countries": [
+            "US",
+            "GB",
+            "DE",
+            "FR"
+          ]
         },
-        "note": {
-          "type": "string"
+        {
+          "domain": "dentsu.co.jp",
+          "brands": [
+            "nike"
+          ],
+          "countries": [
+            "JP"
+          ]
         },
-        "region": {
-          "description": "ISO 3166-1 alpha-2 country code if this is a regional domain",
-          "pattern": "^[A-Z]{2}$",
-          "type": "string"
+        {
+          "domain": "nike.com",
+          "brands": [
+            "*"
+          ]
         }
-      },
-      "required": [
-        "house"
       ],
-      "title": "House Redirect",
-      "type": "object"
+      "last_updated": "2026-01-15T10:00:00Z"
     },
     {
-      "additionalProperties": false,
-      "description": "Brand with an agent that provides brand info via MCP",
-      "properties": {
-        "$schema": {
-          "type": "string"
-        },
-        "brand_agent": {
-          "$ref": "#/definitions/brand_agent"
-        },
-        "contact": {
-          "$ref": "#/definitions/contact"
-        },
-        "last_updated": {
-          "format": "date-time",
-          "type": "string"
-        },
-        "version": {
-          "type": "string"
-        }
+      "$schema": "/schemas/latest/brand.json",
+      "version": "1.0",
+      "house": {
+        "domain": "mediavine.com",
+        "name": "Mediavine",
+        "architecture": "branded_house"
       },
-      "required": [
-        "brand_agent"
-      ],
-      "title": "Brand Agent",
-      "type": "object"
-    },
-    {
-      "additionalProperties": false,
-      "description": "Full house/brand portfolio with hierarchy, creative assets, and properties",
-      "properties": {
-        "$schema": {
-          "type": "string"
-        },
-        "authorized_operators": {
-          "description": "Entities authorized to represent brands from this house. Third parties (sellers, platforms) can verify an operator's authorization by checking this list. Operators are identified by domain.",
-          "items": {
-            "$ref": "#/definitions/authorized_operator"
-          },
-          "type": "array"
-        },
-        "brands": {
-          "description": "Brands owned by this house",
-          "items": {
-            "$ref": "#/definitions/brand"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "contact": {
-          "$ref": "#/definitions/contact"
-        },
-        "house": {
-          "$ref": "#/definitions/house"
-        },
-        "last_updated": {
-          "format": "date-time",
-          "type": "string"
-        },
-        "trademarks": {
-          "items": {
-            "additionalProperties": true,
-            "properties": {
-              "mark": {
-                "type": "string"
-              },
-              "number": {
-                "type": "string"
-              },
-              "registry": {
-                "type": "string"
-              }
+      "brands": [
+        {
+          "id": "mediavine",
+          "url": "https://mediavine.com",
+          "names": [
+            {
+              "en_US": "Mediavine"
+            }
+          ],
+          "keller_type": "master",
+          "properties": [
+            {
+              "type": "website",
+              "identifier": "mediavine.com",
+              "primary": true
             },
-            "required": [
-              "registry",
-              "number",
-              "mark"
-            ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "version": {
-          "type": "string"
+            {
+              "type": "website",
+              "identifier": "thehollywoodgossip.com",
+              "relationship": "delegated"
+            },
+            {
+              "type": "website",
+              "identifier": "foodfanatic.com",
+              "relationship": "delegated"
+            },
+            {
+              "type": "website",
+              "identifier": "thebiglead.com",
+              "relationship": "delegated"
+            }
+          ],
+          "agents": [
+            {
+              "type": "sales",
+              "url": "https://ads.mediavine.com/mcp",
+              "id": "mediavine_sales"
+            }
+          ]
         }
-      },
-      "required": [
-        "house",
-        "brands"
       ],
-      "title": "House Portfolio",
-      "type": "object"
+      "last_updated": "2026-01-15T10:00:00Z"
     }
-  ],
-  "title": "Brand Discovery"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/acquire-rights-request.json b/schemas/cache/brand/acquire-rights-request.json
index c58ee48f7..24805599c 100644
--- a/schemas/cache/brand/acquire-rights-request.json
+++ b/schemas/cache/brand/acquire-rights-request.json
@@ -1,101 +1,109 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Acquire Rights Request",
   "description": "Binding contractual request to acquire rights from a brand agent. Parallels create_media_buy \u2014 the buyer selects a pricing_option_id from a get_rights response and provides campaign details. The agent clears against existing contracts and returns terms, generation credentials, and disclosure requirements.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "rights_id": {
+      "type": "string",
+      "description": "Rights offering identifier from get_rights response"
+    },
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Selected pricing option from the rights offering"
+    },
     "buyer": {
       "$ref": "../core/brand-ref.json",
       "description": "The buyer's brand identity"
     },
     "campaign": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Campaign details for rights clearance",
       "properties": {
-        "countries": {
-          "description": "Countries where the campaign will run (ISO 3166-1 alpha-2)",
-          "items": {
-            "pattern": "^[A-Z]{2}$",
-            "type": "string"
-          },
-          "type": "array"
-        },
         "description": {
-          "description": "Description of how the rights will be used",
-          "type": "string"
+          "type": "string",
+          "description": "Description of how the rights will be used"
         },
-        "end_date": {
-          "description": "Campaign end date (ISO 8601)",
-          "format": "date",
-          "type": "string"
+        "uses": {
+          "type": "array",
+          "description": "Specific rights uses for this campaign",
+          "items": {
+            "$ref": "../enums/right-use.json"
+          },
+          "minItems": 1
         },
-        "estimated_impressions": {
-          "description": "Estimated total impressions for the campaign",
-          "minimum": 0,
-          "type": "integer"
+        "countries": {
+          "type": "array",
+          "description": "Countries where the campaign will run (ISO 3166-1 alpha-2)",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          }
         },
         "format_ids": {
+          "type": "array",
           "description": "Creative formats that will be produced",
           "items": {
             "$ref": "../core/format-id.json"
-          },
-          "type": "array"
+          }
+        },
+        "estimated_impressions": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Estimated total impressions for the campaign"
         },
         "start_date": {
-          "description": "Campaign start date (ISO 8601)",
+          "type": "string",
           "format": "date",
-          "type": "string"
+          "description": "Campaign start date (ISO 8601)"
         },
-        "uses": {
-          "description": "Specific rights uses for this campaign",
-          "items": {
-            "$ref": "../enums/right-use.json"
-          },
-          "minItems": 1,
-          "type": "array"
+        "end_date": {
+          "type": "string",
+          "format": "date",
+          "description": "Campaign end date (ISO 8601)"
         }
       },
       "required": [
         "description",
         "uses"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "revocation_webhook": {
+      "$ref": "../core/push-notification-config.json",
+      "description": "Webhook for rights revocation notifications. If the rights holder needs to revoke rights (talent scandal, contract violation, etc.), they POST a revocation-notification to this URL. The buyer is responsible for stopping creative delivery upon receipt."
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "push_notification_config": {
+      "$ref": "../core/push-notification-config.json",
+      "description": "Webhook for async status updates if the acquisition requires approval. The rights agent sends a webhook notification when the status transitions to acquired or rejected."
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated key for safe retries. Resubmitting with the same key returns the original response rather than creating a duplicate acquisition. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
-    },
-    "pricing_option_id": {
-      "description": "Selected pricing option from the rights offering",
-      "type": "string"
-    },
-    "push_notification_config": {
-      "$ref": "../core/push-notification-config.json",
-      "description": "Webhook for async status updates if the acquisition requires approval. The rights agent sends a webhook notification when the status transitions to acquired or rejected."
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
-    "revocation_webhook": {
-      "$ref": "../core/push-notification-config.json",
-      "description": "Webhook for rights revocation notifications. If the rights holder needs to revoke rights (talent scandal, contract violation, etc.), they POST a revocation-notification to this URL. The buyer is responsible for stopping creative delivery upon receipt."
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "rights_id": {
-      "description": "Rights offering identifier from get_rights response",
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "rights_id",
     "pricing_option_id",
     "buyer",
     "campaign",
     "revocation_webhook"
   ],
-  "title": "Acquire Rights Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/acquire-rights-response.json b/schemas/cache/brand/acquire-rights-response.json
index fe5bd1cc7..07eb5ff1c 100644
--- a/schemas/cache/brand/acquire-rights-response.json
+++ b/schemas/cache/brand/acquire-rights-response.json
@@ -1,82 +1,79 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Acquire Rights Response",
   "description": "Result of a rights acquisition request. Returns one of three statuses: acquired (with terms and generation credentials), pending_approval (requires rights holder review), or rejected (with reason). Uses discriminated union on status field.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "title": "AcquireRightsAcquired",
       "properties": {
-        "approval_webhook": {
-          "$ref": "../core/push-notification-config.json",
-          "description": "Authenticated webhook for submitting creatives for approval. POST a creative-approval-request to the URL using the provided authentication. The response is a creative-approval-response."
+        "rights_id": {
+          "type": "string",
+          "description": "Rights grant identifier"
+        },
+        "status": {
+          "type": "string",
+          "const": "acquired",
+          "description": "Rights have been cleared and credentials issued"
         },
         "brand_id": {
-          "description": "Brand identifier of the rights subject",
-          "type": "string"
+          "type": "string",
+          "description": "Brand identifier of the rights subject"
         },
-        "context": {
-          "$ref": "../core/context.json"
+        "terms": {
+          "$ref": "rights-terms.json",
+          "description": "Agreed contractual terms"
+        },
+        "generation_credentials": {
+          "type": "array",
+          "description": "Scoped credentials for generating rights-cleared content",
+          "items": {
+            "$ref": "../core/generation-credential.json"
+          }
+        },
+        "restrictions": {
+          "type": "array",
+          "description": "Usage restrictions and requirements",
+          "items": {
+            "type": "string"
+          }
         },
         "disclosure": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Required disclosure for creatives using these rights",
           "properties": {
             "required": {
-              "description": "Whether disclosure is required",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Whether disclosure is required"
             },
             "text": {
-              "description": "Disclosure text to include with the creative",
-              "type": "string"
+              "type": "string",
+              "description": "Disclosure text to include with the creative"
             }
           },
           "required": [
             "required"
           ],
-          "type": "object"
+          "additionalProperties": true
         },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "generation_credentials": {
-          "description": "Scoped credentials for generating rights-cleared content",
-          "items": {
-            "$ref": "../core/generation-credential.json"
-          },
-          "type": "array"
+        "approval_webhook": {
+          "$ref": "../core/push-notification-config.json",
+          "description": "Authenticated webhook for submitting creatives for approval. POST a creative-approval-request to the URL using the provided authentication. The response is a creative-approval-response."
         },
-        "restrictions": {
-          "description": "Usage restrictions and requirements",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
+        "usage_reporting_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Endpoint for reporting usage against these rights"
         },
         "rights_constraint": {
           "$ref": "../core/rights-constraint.json",
           "description": "Pre-built rights constraint for embedding in creative manifests. Populated from the agreed terms \u2014 the buyer does not need to construct it manually."
         },
-        "rights_id": {
-          "description": "Rights grant identifier",
-          "type": "string"
-        },
-        "status": {
-          "const": "acquired",
-          "description": "Rights have been cleared and credentials issued",
-          "type": "string"
-        },
-        "terms": {
-          "$ref": "rights-terms.json",
-          "description": "Agreed contractual terms"
+        "context": {
+          "$ref": "../core/context.json"
         },
-        "usage_reporting_url": {
-          "description": "Endpoint for reporting usage against these rights",
-          "format": "uri",
-          "type": "string"
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -87,40 +84,40 @@
         "generation_credentials",
         "rights_constraint"
       ],
-      "title": "AcquireRightsAcquired"
-    },
-    {
       "additionalProperties": true,
       "not": {
         "required": [
           "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "AcquireRightsPendingApproval",
       "properties": {
-        "brand_id": {
+        "rights_id": {
           "type": "string"
         },
-        "context": {
-          "$ref": "../core/context.json"
+        "status": {
+          "type": "string",
+          "const": "pending_approval",
+          "description": "Rights require approval from the rights holder"
         },
-        "detail": {
-          "description": "Explanation of what requires approval",
+        "brand_id": {
           "type": "string"
         },
+        "detail": {
+          "type": "string",
+          "description": "Explanation of what requires approval"
+        },
         "estimated_response_time": {
-          "description": "Expected time for approval decision (e.g., '48h', '3 business days')",
-          "type": "string"
+          "type": "string",
+          "description": "Expected time for approval decision (e.g., '48h', '3 business days')"
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "rights_id": {
-          "type": "string"
-        },
-        "status": {
-          "const": "pending_approval",
-          "description": "Rights require approval from the rights holder",
-          "type": "string"
         }
       },
       "required": [
@@ -128,43 +125,43 @@
         "status",
         "brand_id"
       ],
-      "title": "AcquireRightsPendingApproval"
-    },
-    {
       "additionalProperties": true,
       "not": {
         "required": [
           "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "AcquireRightsRejected",
       "properties": {
-        "brand_id": {
-          "type": "string"
-        },
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "reason": {
-          "description": "Why the rights request was rejected. May be sanitized to protect confidential brand rules \u2014 e.g., 'This violates our public figures brand guidelines' rather than naming the specific rule.",
-          "type": "string"
-        },
         "rights_id": {
           "type": "string"
         },
         "status": {
+          "type": "string",
           "const": "rejected",
-          "description": "Rights request was rejected",
+          "description": "Rights request was rejected"
+        },
+        "brand_id": {
           "type": "string"
         },
+        "reason": {
+          "type": "string",
+          "description": "Why the rights request was rejected. May be sanitized to protect confidential brand rules \u2014 e.g., 'This violates our public figures brand guidelines' rather than naming the specific rule."
+        },
         "suggestions": {
+          "type": "array",
           "description": "Actionable alternatives the buyer can try. If present, the rejection is fixable \u2014 the buyer can adjust their request. If absent, the rejection is final for this talent/rights combination.",
           "items": {
             "type": "string"
-          },
-          "type": "array"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -173,29 +170,25 @@
         "brand_id",
         "reason"
       ],
-      "title": "AcquireRightsRejected"
-    },
-    {
       "additionalProperties": true,
       "not": {
-        "anyOf": [
-          {
-            "required": [
-              "status"
-            ]
-          }
+        "required": [
+          "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "AcquireRightsError",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -204,9 +197,16 @@
       "required": [
         "errors"
       ],
-      "title": "AcquireRightsError"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "status"
+            ]
+          }
+        ]
+      }
     }
-  ],
-  "title": "Acquire Rights Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/creative-approval-request.json b/schemas/cache/brand/creative-approval-request.json
new file mode 100644
index 000000000..cf2eaf43d
--- /dev/null
+++ b/schemas/cache/brand/creative-approval-request.json
@@ -0,0 +1,59 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Approval Request",
+  "description": "Payload submitted by the buyer to the approval_webhook URL from acquire_rights. Contains the creative for rights holder review before distribution.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "rights_id": {
+      "type": "string",
+      "description": "Rights grant this creative was produced under"
+    },
+    "creative_id": {
+      "type": "string",
+      "description": "Buyer-assigned creative identifier. Equivalent to OpenRTB crid. Used to track approval status across resubmissions."
+    },
+    "creative_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL where the creative asset can be retrieved for review"
+    },
+    "creative_format": {
+      "$ref": "../core/format-id.json",
+      "description": "Format of the creative being submitted"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of the creative for reviewer context"
+    },
+    "metadata": {
+      "type": "object",
+      "description": "Additional creative metadata (duration, dimensions, target audience, etc.)",
+      "additionalProperties": true
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated key for safe retries. Resubmitting with the same key returns the original response. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "rights_id",
+    "creative_url"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/brand/creative-approval-response.json b/schemas/cache/brand/creative-approval-response.json
new file mode 100644
index 000000000..18cf23137
--- /dev/null
+++ b/schemas/cache/brand/creative-approval-response.json
@@ -0,0 +1,182 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Approval Response",
+  "description": "Response from the approval_webhook after reviewing a submitted creative. Uses discriminated union on status field: approved, rejected, or pending_review.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "CreativeApproved",
+      "properties": {
+        "status": {
+          "type": "string",
+          "const": "approved",
+          "description": "Creative has been approved for distribution"
+        },
+        "rights_id": {
+          "type": "string"
+        },
+        "creative_id": {
+          "type": "string",
+          "description": "Echo of the buyer's creative identifier"
+        },
+        "creative_url": {
+          "type": "string",
+          "format": "uri"
+        },
+        "approved_at": {
+          "type": "string",
+          "format": "date-time"
+        },
+        "conditions": {
+          "type": "array",
+          "description": "Conditions on the approval (e.g., 'approved for NL market only')",
+          "items": {
+            "type": "string"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "status",
+        "rights_id"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "CreativeRejected",
+      "properties": {
+        "status": {
+          "type": "string",
+          "const": "rejected",
+          "description": "Creative was rejected"
+        },
+        "rights_id": {
+          "type": "string"
+        },
+        "creative_id": {
+          "type": "string",
+          "description": "Echo of the buyer's creative identifier"
+        },
+        "creative_url": {
+          "type": "string",
+          "format": "uri"
+        },
+        "reason": {
+          "type": "string",
+          "description": "Why the creative was rejected"
+        },
+        "suggestions": {
+          "type": "array",
+          "description": "Actionable feedback for revision. If present, the buyer can revise and resubmit the creative. If absent, the rejection is final for this creative concept.",
+          "items": {
+            "type": "string"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "status",
+        "rights_id",
+        "reason"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "CreativePendingReview",
+      "properties": {
+        "status": {
+          "type": "string",
+          "const": "pending_review",
+          "description": "Creative is queued for review"
+        },
+        "rights_id": {
+          "type": "string"
+        },
+        "creative_id": {
+          "type": "string",
+          "description": "Echo of the buyer's creative identifier"
+        },
+        "creative_url": {
+          "type": "string",
+          "format": "uri"
+        },
+        "estimated_response_time": {
+          "type": "string",
+          "description": "Expected time for review (e.g., '24h', '2 business days')"
+        },
+        "status_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to poll for updated approval status. GET this URL to receive a creative-approval-response. Poll at reasonable intervals (suggested: every 5 minutes, back off after 1 hour to every 30 minutes). Stop polling after estimated_response_time has elapsed and the status is still pending_review."
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "status",
+        "rights_id"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "CreativeApprovalError",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "status"
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/brand/get-brand-identity-request.json b/schemas/cache/brand/get-brand-identity-request.json
index 6ada8f377..554e5bebd 100644
--- a/schemas/cache/brand/get-brand-identity-request.json
+++ b/schemas/cache/brand/get-brand-identity-request.json
@@ -1,21 +1,25 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Brand Identity Request",
   "description": "Request brand identity data from a brand agent. Core identity (house, names, description, logos) is always public. Linked accounts get deeper data: high-res assets, voice configs, tone guidelines, and rights availability.",
+  "type": "object",
   "properties": {
-    "brand_id": {
-      "description": "Brand identifier from brand.json brands array",
-      "type": "string"
-    },
-    "context": {
-      "$ref": "../core/context.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "brand_id": {
+      "type": "string",
+      "description": "Brand identifier from brand.json brands array"
     },
     "fields": {
+      "type": "array",
       "description": "Optional identity sections to include in the response. When omitted, all sections the caller is authorized to see are returned. Core fields (brand_id, house, names) are always returned and do not need to be requested.",
+      "minItems": 1,
       "items": {
+        "type": "string",
         "enum": [
           "description",
           "industries",
@@ -29,20 +33,22 @@
           "voice_synthesis",
           "assets",
           "rights"
-        ],
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
+        ]
+      }
     },
     "use_case": {
-      "description": "Intended use case, so the agent can tailor the response. A 'voice_synthesis' use case returns voice configs; a 'likeness' use case returns high-res photos and appearance guidelines.",
-      "type": "string"
+      "type": "string",
+      "description": "Intended use case, so the agent can tailor the response. A 'voice_synthesis' use case returns voice configs; a 'likeness' use case returns high-res photos and appearance guidelines."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "brand_id"
   ],
-  "title": "Get Brand Identity Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/get-brand-identity-response.json b/schemas/cache/brand/get-brand-identity-response.json
index 0ab4a0a1b..160a6ccf9 100644
--- a/schemas/cache/brand/get-brand-identity-response.json
+++ b/schemas/cache/brand/get-brand-identity-response.json
@@ -1,452 +1,529 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Brand Identity Response",
   "description": "Brand identity data from a brand agent. Core identity (house, names, description, logos) is always public. Authorized callers receive richer data (high-res assets, voice synthesis, tone guidelines, rights availability). Includes available_fields to signal what the caller could unlock by linking their account.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "title": "GetBrandIdentitySuccess",
       "properties": {
-        "assets": {
-          "description": "Available brand assets (images, audio, video). Authorized callers only. Shape matches brand.json asset definition.",
+        "brand_id": {
+          "type": "string",
+          "description": "Brand identifier"
+        },
+        "house": {
+          "type": "object",
+          "description": "The house (corporate entity) this brand belongs to. Always returned regardless of authorization level.",
+          "properties": {
+            "domain": {
+              "type": "string",
+              "description": "House domain (e.g., nikeinc.com)"
+            },
+            "name": {
+              "type": "string",
+              "description": "House display name"
+            }
+          },
+          "required": [
+            "domain",
+            "name"
+          ],
+          "additionalProperties": true
+        },
+        "names": {
+          "type": "array",
+          "description": "Localized brand names with BCP 47 locale code keys (e.g., 'en_US', 'fr_CA'). Bare language codes ('en') are accepted as wildcards for backwards compatibility.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
+            "minProperties": 1,
+            "additionalProperties": {
+              "type": "string"
+            }
+          }
+        },
+        "description": {
+          "type": "string",
+          "description": "Brand description"
+        },
+        "industries": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "Brand industries."
+        },
+        "keller_type": {
+          "type": "string",
+          "enum": [
+            "master",
+            "sub_brand",
+            "endorsed",
+            "independent"
+          ],
+          "description": "Brand architecture type: master (primary brand of house), sub_brand (carries parent name), endorsed (independent identity backed by parent), independent (operates separately)"
+        },
+        "logos": {
+          "type": "array",
+          "description": "Brand logos. Public callers get standard logos; authorized callers also receive high-res variants. Shape matches brand.json logo definition.",
+          "items": {
+            "type": "object",
             "properties": {
-              "asset_id": {
-                "description": "Unique identifier",
-                "type": "string"
-              },
-              "asset_type": {
-                "$ref": "../enums/asset-content-type.json",
-                "description": "Type of asset content"
-              },
-              "description": {
-                "description": "Asset description or usage notes",
-                "type": "string"
-              },
-              "duration_seconds": {
-                "description": "Video/audio duration in seconds",
-                "type": "number"
-              },
-              "file_size_bytes": {
-                "description": "File size in bytes",
-                "type": "integer"
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to the logo asset"
               },
-              "format": {
-                "description": "File format (e.g., 'jpg', 'mp4')",
-                "type": "string"
+              "orientation": {
+                "type": "string",
+                "enum": [
+                  "square",
+                  "horizontal",
+                  "vertical",
+                  "stacked"
+                ],
+                "description": "Logo aspect ratio orientation"
               },
-              "height": {
-                "description": "Image/video height in pixels",
-                "type": "integer"
+              "background": {
+                "type": "string",
+                "enum": [
+                  "dark-bg",
+                  "light-bg",
+                  "transparent-bg"
+                ],
+                "description": "Background compatibility"
               },
-              "name": {
-                "description": "Human-readable name",
-                "type": "string"
+              "variant": {
+                "type": "string",
+                "enum": [
+                  "primary",
+                  "secondary",
+                  "icon",
+                  "wordmark",
+                  "full-lockup"
+                ],
+                "description": "Logo variant type"
               },
               "tags": {
-                "description": "Tags for discovery",
+                "type": "array",
                 "items": {
                   "type": "string"
                 },
-                "type": "array"
+                "description": "Additional semantic tags"
               },
-              "url": {
-                "description": "URL to CDN-hosted asset file",
-                "format": "uri",
-                "type": "string"
+              "usage": {
+                "type": "string",
+                "description": "When to use this logo variant"
               },
               "width": {
-                "description": "Image/video width in pixels",
-                "type": "integer"
+                "type": "integer",
+                "description": "Width in pixels"
+              },
+              "height": {
+                "type": "integer",
+                "description": "Height in pixels"
               }
             },
             "required": [
-              "asset_id",
-              "asset_type",
               "url"
             ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "available_fields": {
-          "description": "Fields available but not returned in this response due to authorization level. Tells the caller what they would gain by linking their account via sync_accounts. Values match the request fields enum.",
-          "items": {
-            "enum": [
-              "description",
-              "industries",
-              "keller_type",
-              "logos",
-              "colors",
-              "fonts",
-              "visual_guidelines",
-              "tone",
-              "tagline",
-              "voice_synthesis",
-              "assets",
-              "rights"
-            ],
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "brand_id": {
-          "description": "Brand identifier",
-          "type": "string"
+            "additionalProperties": true
+          }
         },
         "colors": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Brand color palette. Each role accepts a single hex color or an array of hex colors. Shape matches brand.json colors definition.",
           "properties": {
-            "accent": {
+            "primary": {
               "oneOf": [
                 {
-                  "pattern": "^#[0-9A-Fa-f]{6}$",
-                  "type": "string"
+                  "type": "string",
+                  "pattern": "^#[0-9A-Fa-f]{6}$"
                 },
                 {
+                  "type": "array",
                   "items": {
-                    "pattern": "^#[0-9A-Fa-f]{6}$",
-                    "type": "string"
+                    "type": "string",
+                    "pattern": "^#[0-9A-Fa-f]{6}$"
                   },
-                  "minItems": 1,
-                  "type": "array"
+                  "minItems": 1
                 }
               ]
             },
-            "background": {
+            "secondary": {
               "oneOf": [
                 {
-                  "pattern": "^#[0-9A-Fa-f]{6}$",
-                  "type": "string"
+                  "type": "string",
+                  "pattern": "^#[0-9A-Fa-f]{6}$"
                 },
                 {
+                  "type": "array",
                   "items": {
-                    "pattern": "^#[0-9A-Fa-f]{6}$",
-                    "type": "string"
+                    "type": "string",
+                    "pattern": "^#[0-9A-Fa-f]{6}$"
                   },
-                  "minItems": 1,
-                  "type": "array"
+                  "minItems": 1
                 }
               ]
             },
-            "primary": {
+            "accent": {
               "oneOf": [
                 {
-                  "pattern": "^#[0-9A-Fa-f]{6}$",
-                  "type": "string"
+                  "type": "string",
+                  "pattern": "^#[0-9A-Fa-f]{6}$"
                 },
                 {
+                  "type": "array",
                   "items": {
-                    "pattern": "^#[0-9A-Fa-f]{6}$",
-                    "type": "string"
+                    "type": "string",
+                    "pattern": "^#[0-9A-Fa-f]{6}$"
                   },
-                  "minItems": 1,
-                  "type": "array"
+                  "minItems": 1
                 }
               ]
             },
-            "secondary": {
+            "background": {
               "oneOf": [
                 {
-                  "pattern": "^#[0-9A-Fa-f]{6}$",
-                  "type": "string"
+                  "type": "string",
+                  "pattern": "^#[0-9A-Fa-f]{6}$"
                 },
                 {
+                  "type": "array",
                   "items": {
-                    "pattern": "^#[0-9A-Fa-f]{6}$",
-                    "type": "string"
+                    "type": "string",
+                    "pattern": "^#[0-9A-Fa-f]{6}$"
                   },
-                  "minItems": 1,
-                  "type": "array"
+                  "minItems": 1
                 }
               ]
             },
             "text": {
               "oneOf": [
                 {
-                  "pattern": "^#[0-9A-Fa-f]{6}$",
-                  "type": "string"
+                  "type": "string",
+                  "pattern": "^#[0-9A-Fa-f]{6}$"
                 },
                 {
+                  "type": "array",
                   "items": {
-                    "pattern": "^#[0-9A-Fa-f]{6}$",
-                    "type": "string"
+                    "type": "string",
+                    "pattern": "^#[0-9A-Fa-f]{6}$"
                   },
-                  "minItems": 1,
-                  "type": "array"
+                  "minItems": 1
                 }
               ]
             }
           },
-          "type": "object"
-        },
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "description": {
-          "description": "Brand description",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+          "additionalProperties": true
         },
         "fonts": {
+          "type": "object",
+          "description": "Brand typography. Each key is a role name (e.g., 'primary', 'secondary') referenced by type_scale entries. Values are either a CSS font-family string or a structured object with family name and font files. Shape matches brand.json fonts definition.",
+          "maxProperties": 20,
+          "definitions": {
+            "font_role": {
+              "oneOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "family": {
+                      "type": "string",
+                      "description": "CSS font-family name"
+                    },
+                    "files": {
+                      "type": "array",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "pattern": "^https://",
+                            "description": "HTTPS URL to the font file"
+                          },
+                          "weight": {
+                            "type": "integer",
+                            "minimum": 100,
+                            "maximum": 900,
+                            "description": "CSS numeric font-weight"
+                          },
+                          "weight_range": {
+                            "type": "array",
+                            "items": {
+                              "type": "integer",
+                              "minimum": 100,
+                              "maximum": 900
+                            },
+                            "minItems": 2,
+                            "maxItems": 2,
+                            "description": "Variable font weight axis range as [min, max]"
+                          },
+                          "style": {
+                            "type": "string",
+                            "enum": [
+                              "normal",
+                              "italic",
+                              "oblique"
+                            ],
+                            "description": "CSS font-style"
+                          }
+                        },
+                        "required": [
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "maxItems": 36
+                    },
+                    "opentype_features": {
+                      "type": "array",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[a-z0-9]{4}$"
+                      },
+                      "maxItems": 20,
+                      "description": "OpenType feature tags to enable (e.g., ['ss01', 'tnum'])"
+                    },
+                    "fallbacks": {
+                      "type": "array",
+                      "items": {
+                        "type": "string",
+                        "maxLength": 100
+                      },
+                      "maxItems": 10,
+                      "description": "Ordered fallback font-family names for script coverage"
+                    }
+                  },
+                  "required": [
+                    "family"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            }
+          },
+          "properties": {
+            "primary": {
+              "$ref": "#/oneOf/0/properties/fonts/definitions/font_role",
+              "description": "Primary font family"
+            },
+            "secondary": {
+              "$ref": "#/oneOf/0/properties/fonts/definitions/font_role",
+              "description": "Secondary font family"
+            }
+          },
+          "additionalProperties": {
+            "$ref": "#/oneOf/0/properties/fonts/definitions/font_role"
+          }
+        },
+        "visual_guidelines": {
+          "type": "object",
           "additionalProperties": true,
-          "description": "Brand typography. Shape matches brand.json fonts definition.",
+          "description": "Structured visual rules for generative creative systems (photography, graphic_style, colorways, type_scale, motion). Matches brand.json visual_guidelines definition. Authorized callers only."
+        },
+        "tone": {
+          "type": "object",
+          "description": "Brand voice and messaging guidelines",
           "properties": {
-            "font_urls": {
-              "description": "URLs to web font files",
+            "voice": {
+              "type": "string",
+              "description": "Brand personality described as comma-separated adjectives (e.g., 'enthusiastic, warm, competitive')"
+            },
+            "attributes": {
+              "type": "array",
               "items": {
-                "format": "uri",
                 "type": "string"
               },
-              "type": "array"
+              "description": "Personality traits that characterize the brand voice, used as prompt guidance"
             },
-            "primary": {
-              "description": "Primary font family",
-              "type": "string"
+            "dos": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Approved messaging approaches, content themes, and reference points"
             },
-            "secondary": {
-              "description": "Secondary font family",
-              "type": "string"
+            "donts": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Prohibited topics, competitor references, and phrasings to avoid"
             }
           },
-          "type": "object"
+          "additionalProperties": true
         },
-        "house": {
-          "additionalProperties": true,
-          "description": "The house (corporate entity) this brand belongs to. Always returned regardless of authorization level.",
+        "tagline": {
+          "oneOf": [
+            {
+              "type": "string",
+              "description": "Plain tagline string for backwards compatibility"
+            },
+            {
+              "type": "array",
+              "description": "Localized taglines with BCP 47 locale codes",
+              "items": {
+                "type": "object",
+                "minProperties": 1,
+                "maxProperties": 1,
+                "additionalProperties": {
+                  "type": "string",
+                  "minLength": 1
+                }
+              },
+              "minItems": 1
+            }
+          ],
+          "description": "Brand tagline or slogan. Accepts a plain string or a localized array matching the names pattern."
+        },
+        "voice_synthesis": {
+          "type": "object",
+          "description": "Voice synthesis configuration for AI-generated audio",
           "properties": {
-            "domain": {
-              "description": "House domain (e.g., nikeinc.com)",
+            "provider": {
               "type": "string"
             },
-            "name": {
-              "description": "House display name",
+            "voice_id": {
               "type": "string"
+            },
+            "settings": {
+              "type": "object",
+              "additionalProperties": true
             }
           },
-          "required": [
-            "domain",
-            "name"
-          ],
-          "type": "object"
-        },
-        "industries": {
-          "description": "Brand industries.",
-          "items": {
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
+          "additionalProperties": true
         },
-        "keller_type": {
-          "description": "Brand architecture type: master (primary brand of house), sub_brand (carries parent name), endorsed (independent identity backed by parent), independent (operates separately)",
-          "enum": [
-            "master",
-            "sub_brand",
-            "endorsed",
-            "independent"
-          ],
-          "type": "string"
-        },
-        "logos": {
-          "description": "Brand logos. Public callers get standard logos; authorized callers also receive high-res variants. Shape matches brand.json logo definition.",
+        "assets": {
+          "type": "array",
+          "description": "Available brand assets (images, audio, video). Authorized callers only. Shape matches brand.json asset definition.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
-              "background": {
-                "description": "Background compatibility",
-                "enum": [
-                  "dark-bg",
-                  "light-bg",
-                  "transparent-bg"
-                ],
-                "type": "string"
+              "asset_id": {
+                "type": "string",
+                "description": "Unique identifier"
               },
-              "height": {
-                "description": "Height in pixels",
-                "type": "integer"
+              "asset_type": {
+                "$ref": "../enums/asset-content-type.json",
+                "description": "Type of asset content"
               },
-              "orientation": {
-                "description": "Logo aspect ratio orientation",
-                "enum": [
-                  "square",
-                  "horizontal",
-                  "vertical",
-                  "stacked"
-                ],
-                "type": "string"
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to CDN-hosted asset file"
               },
               "tags": {
-                "description": "Additional semantic tags",
+                "type": "array",
                 "items": {
                   "type": "string"
                 },
-                "type": "array"
+                "description": "Tags for discovery"
               },
-              "url": {
-                "description": "URL to the logo asset",
-                "format": "uri",
-                "type": "string"
-              },
-              "usage": {
-                "description": "When to use this logo variant",
-                "type": "string"
+              "name": {
+                "type": "string",
+                "description": "Human-readable name"
               },
-              "variant": {
-                "description": "Logo variant type",
-                "enum": [
-                  "primary",
-                  "secondary",
-                  "icon",
-                  "wordmark",
-                  "full-lockup"
-                ],
-                "type": "string"
+              "description": {
+                "type": "string",
+                "description": "Asset description or usage notes"
               },
               "width": {
-                "description": "Width in pixels",
-                "type": "integer"
+                "type": "integer",
+                "description": "Image/video width in pixels"
+              },
+              "height": {
+                "type": "integer",
+                "description": "Image/video height in pixels"
+              },
+              "duration_seconds": {
+                "type": "number",
+                "description": "Video/audio duration in seconds"
+              },
+              "file_size_bytes": {
+                "type": "integer",
+                "description": "File size in bytes"
+              },
+              "format": {
+                "type": "string",
+                "description": "File format (e.g., 'jpg', 'mp4')"
               }
             },
             "required": [
+              "asset_id",
+              "asset_type",
               "url"
             ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "names": {
-          "description": "Localized brand names with BCP 47 locale code keys (e.g., 'en_US', 'fr_CA'). Bare language codes ('en') are accepted as wildcards for backwards compatibility.",
-          "items": {
-            "additionalProperties": {
-              "type": "string"
-            },
-            "minProperties": 1,
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": true
+          }
         },
         "rights": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Rights availability summary. For detailed pricing, use get_rights.",
           "properties": {
             "available_uses": {
+              "type": "array",
               "items": {
                 "$ref": "../enums/right-use.json"
-              },
-              "type": "array"
-            },
-            "content_restrictions": {
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
+              }
             },
             "countries": {
+              "type": "array",
               "description": "Countries where rights are available (ISO 3166-1 alpha-2). If omitted, rights are available worldwide.",
               "items": {
-                "pattern": "^[A-Z]{2}$",
-                "type": "string"
-              },
-              "type": "array"
+                "type": "string",
+                "pattern": "^[A-Z]{2}$"
+              }
             },
             "excluded_countries": {
+              "type": "array",
               "description": "Countries excluded from availability (ISO 3166-1 alpha-2)",
               "items": {
-                "pattern": "^[A-Z]{2}$",
-                "type": "string"
-              },
-              "type": "array"
+                "type": "string",
+                "pattern": "^[A-Z]{2}$"
+              }
             },
             "exclusivity_model": {
               "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "tagline": {
-          "description": "Brand tagline or slogan. Accepts a plain string or a localized array matching the names pattern.",
-          "oneOf": [
-            {
-              "description": "Plain tagline string for backwards compatibility",
-              "type": "string"
             },
-            {
-              "description": "Localized taglines with BCP 47 locale codes",
-              "items": {
-                "additionalProperties": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "maxProperties": 1,
-                "minProperties": 1,
-                "type": "object"
-              },
-              "minItems": 1,
-              "type": "array"
-            }
-          ]
-        },
-        "tone": {
-          "additionalProperties": true,
-          "description": "Brand voice and messaging guidelines",
-          "properties": {
-            "attributes": {
-              "description": "Personality traits that characterize the brand voice, used as prompt guidance",
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
-            },
-            "donts": {
-              "description": "Prohibited topics, competitor references, and phrasings to avoid",
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
-            },
-            "dos": {
-              "description": "Approved messaging approaches, content themes, and reference points",
+            "content_restrictions": {
+              "type": "array",
               "items": {
                 "type": "string"
-              },
-              "type": "array"
-            },
-            "voice": {
-              "description": "Brand personality described as comma-separated adjectives (e.g., 'enthusiastic, warm, competitive')",
-              "type": "string"
+              }
             }
           },
-          "type": "object"
+          "additionalProperties": true
         },
-        "visual_guidelines": {
-          "additionalProperties": true,
-          "description": "Structured visual rules for generative creative systems (photography, graphic_style, colorways, type_scale, motion). Matches brand.json visual_guidelines definition. Authorized callers only.",
-          "type": "object"
+        "available_fields": {
+          "type": "array",
+          "description": "Fields available but not returned in this response due to authorization level. Tells the caller what they would gain by linking their account via sync_accounts. Values match the request fields enum.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "description",
+              "industries",
+              "keller_type",
+              "logos",
+              "colors",
+              "fonts",
+              "visual_guidelines",
+              "tone",
+              "tagline",
+              "voice_synthesis",
+              "assets",
+              "rights"
+            ]
+          }
         },
-        "voice_synthesis": {
-          "additionalProperties": true,
-          "description": "Voice synthesis configuration for AI-generated audio",
-          "properties": {
-            "provider": {
-              "type": "string"
-            },
-            "settings": {
-              "additionalProperties": true,
-              "type": "object"
-            },
-            "voice_id": {
-              "type": "string"
-            }
-          },
-          "type": "object"
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -454,9 +531,33 @@
         "house",
         "names"
       ],
-      "title": "GetBrandIdentitySuccess"
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
     },
     {
+      "title": "GetBrandIdentityError",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
       "additionalProperties": true,
       "not": {
         "anyOf": [
@@ -476,28 +577,7 @@
             ]
           }
         ]
-      },
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "errors": {
-          "items": {
-            "$ref": "../core/error.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        }
-      },
-      "required": [
-        "errors"
-      ],
-      "title": "GetBrandIdentityError"
+      }
     }
-  ],
-  "title": "Get Brand Identity Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/get-rights-request.json b/schemas/cache/brand/get-rights-request.json
index 967dc7432..d2766409c 100644
--- a/schemas/cache/brand/get-rights-request.json
+++ b/schemas/cache/brand/get-rights-request.json
@@ -1,61 +1,67 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Rights Request",
   "description": "Search for licensable rights across a brand agent's roster. Returns matches with pricing. Discovery is natural-language-first \u2014 no taxonomy for categories. The agent interprets intent from the query and filters based on the buyer's brand compatibility.",
+  "type": "object",
   "properties": {
-    "brand_id": {
-      "description": "Search within a specific brand's rights. If omitted, searches across the agent's full roster.",
-      "type": "string"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "query": {
+      "type": "string",
+      "description": "Natural language description of desired rights. The agent interprets intent, budget signals, and compatibility from this text.",
+      "maxLength": 2000
+    },
+    "uses": {
+      "type": "array",
+      "description": "Rights uses being requested. The agent returns options covering these uses, potentially bundled into composite pricing.",
+      "items": {
+        "$ref": "../enums/right-use.json"
+      },
+      "minItems": 1
     },
     "buyer_brand": {
       "$ref": "../core/brand-ref.json",
       "description": "The buyer's brand. The agent fetches the buyer's brand.json for compatibility filtering (e.g., dietary conflicts, competitor exclusions)."
     },
-    "context": {
-      "$ref": "../core/context.json"
-    },
     "countries": {
+      "type": "array",
       "description": "Countries where rights are needed (ISO 3166-1 alpha-2). Filters to rights available in these markets.",
       "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
-      },
-      "type": "array"
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
+      }
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "brand_id": {
+      "type": "string",
+      "description": "Search within a specific brand's rights. If omitted, searches across the agent's full roster."
+    },
+    "right_type": {
+      "$ref": "../enums/right-type.json",
+      "description": "Filter by type of rights (talent, music, stock_media, etc.)"
     },
     "include_excluded": {
-      "default": false,
+      "type": "boolean",
       "description": "Include filtered-out results in the excluded array with reasons. Defaults to false.",
-      "type": "boolean"
+      "default": false
     },
     "pagination": {
       "$ref": "../core/pagination-request.json",
       "description": "Pagination parameters for large result sets"
     },
-    "query": {
-      "description": "Natural language description of desired rights. The agent interprets intent, budget signals, and compatibility from this text.",
-      "maxLength": 2000,
-      "type": "string"
-    },
-    "right_type": {
-      "$ref": "../enums/right-type.json",
-      "description": "Filter by type of rights (talent, music, stock_media, etc.)"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "uses": {
-      "description": "Rights uses being requested. The agent returns options covering these uses, potentially bundled into composite pricing.",
-      "items": {
-        "$ref": "../enums/right-use.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "query",
     "uses"
   ],
-  "title": "Get Rights Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/get-rights-response.json b/schemas/cache/brand/get-rights-response.json
index fcc3d13d0..f402b02f6 100644
--- a/schemas/cache/brand/get-rights-response.json
+++ b/schemas/cache/brand/get-rights-response.json
@@ -1,138 +1,115 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Rights Response",
   "description": "Licensable rights matching the search criteria, with pricing options. Each result is a complete snapshot of current availability (stateless, DDEX PIE pattern). Excluded results explain why they were filtered out.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "title": "GetRightsSuccess",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "excluded": {
-          "description": "Results that matched but were filtered out, with reasons",
+        "rights": {
+          "type": "array",
+          "description": "Matching rights with pricing options, ranked by relevance",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
+              "rights_id": {
+                "type": "string",
+                "description": "Identifier for this rights offering. Referenced in acquire_rights."
+              },
               "brand_id": {
-                "type": "string"
+                "type": "string",
+                "description": "Brand identifier from the agent's roster"
               },
               "name": {
-                "type": "string"
+                "type": "string",
+                "description": "Display name of the rights subject"
               },
-              "reason": {
-                "description": "Why this result was excluded. May be sanitized to protect confidential brand rules.",
-                "type": "string"
+              "description": {
+                "type": "string",
+                "description": "Description of the rights subject"
               },
-              "suggestions": {
-                "description": "Actionable alternatives if the exclusion is fixable (e.g., 'Available in BE and DE markets'). Absent if the exclusion is final.",
+              "right_type": {
+                "$ref": "../enums/right-type.json"
+              },
+              "match_score": {
+                "type": "number",
+                "minimum": 0,
+                "maximum": 1,
+                "description": "Relevance score from 0 to 1"
+              },
+              "match_reasons": {
+                "type": "array",
+                "description": "Human-readable reasons for the match",
                 "items": {
                   "type": "string"
-                },
-                "type": "array"
-              }
-            },
-            "required": [
-              "brand_id",
-              "reason"
-            ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "rights": {
-          "description": "Matching rights with pricing options, ranked by relevance",
-          "items": {
-            "additionalProperties": true,
-            "properties": {
+                }
+              },
               "available_uses": {
+                "type": "array",
                 "description": "Rights uses available for licensing",
                 "items": {
                   "$ref": "../enums/right-use.json"
-                },
-                "type": "array"
-              },
-              "brand_id": {
-                "description": "Brand identifier from the agent's roster",
-                "type": "string"
-              },
-              "content_restrictions": {
-                "description": "Content restrictions or approval requirements",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
+                }
               },
               "countries": {
+                "type": "array",
                 "description": "Countries where rights are available (ISO 3166-1 alpha-2). When both countries and excluded_countries are present, the effective set is countries minus excluded_countries. If neither is present, all countries are available.",
                 "items": {
-                  "pattern": "^[A-Z]{2}$",
-                  "type": "string"
-                },
-                "type": "array"
-              },
-              "description": {
-                "description": "Description of the rights subject",
-                "type": "string"
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
               },
               "excluded_countries": {
+                "type": "array",
                 "description": "Countries excluded from availability",
                 "items": {
-                  "pattern": "^[A-Z]{2}$",
-                  "type": "string"
-                },
-                "type": "array"
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
               },
               "exclusivity_status": {
-                "additionalProperties": true,
+                "type": "object",
                 "description": "Current exclusivity availability",
                 "properties": {
                   "available": {
-                    "description": "Whether exclusivity is available",
-                    "type": "boolean"
+                    "type": "boolean",
+                    "description": "Whether exclusivity is available"
                   },
                   "existing_exclusives": {
+                    "type": "array",
                     "description": "Active exclusivity commitments that may affect availability. Implementers should use vague descriptions ('exclusive commitment in this category') rather than specific deal terms to protect confidential business relationships.",
                     "items": {
                       "type": "string"
-                    },
-                    "type": "array"
+                    }
                   }
                 },
-                "type": "object"
+                "additionalProperties": true
               },
-              "match_reasons": {
-                "description": "Human-readable reasons for the match",
+              "pricing_options": {
+                "type": "array",
+                "description": "Available pricing options for these rights",
                 "items": {
-                  "type": "string"
+                  "$ref": "rights-pricing-option.json"
                 },
-                "type": "array"
-              },
-              "match_score": {
-                "description": "Relevance score from 0 to 1",
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
+                "minItems": 1
               },
-              "name": {
-                "description": "Display name of the rights subject",
-                "type": "string"
+              "content_restrictions": {
+                "type": "array",
+                "description": "Content restrictions or approval requirements",
+                "items": {
+                  "type": "string"
+                }
               },
               "preview_assets": {
+                "type": "array",
                 "description": "Preview-only assets for evaluation",
                 "items": {
-                  "additionalProperties": true,
+                  "type": "object",
                   "properties": {
                     "url": {
-                      "format": "uri",
-                      "type": "string"
+                      "type": "string",
+                      "format": "uri"
                     },
                     "usage": {
                       "type": "string"
@@ -141,24 +118,8 @@
                   "required": [
                     "url"
                   ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "pricing_options": {
-                "description": "Available pricing options for these rights",
-                "items": {
-                  "$ref": "rights-pricing-option.json"
-                },
-                "minItems": 1,
-                "type": "array"
-              },
-              "right_type": {
-                "$ref": "../enums/right-type.json"
-              },
-              "rights_id": {
-                "description": "Identifier for this rights offering. Referenced in acquire_rights.",
-                "type": "string"
+                  "additionalProperties": true
+                }
               }
             },
             "required": [
@@ -168,37 +129,69 @@
               "available_uses",
               "pricing_options"
             ],
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": true
+          }
+        },
+        "excluded": {
+          "type": "array",
+          "description": "Results that matched but were filtered out, with reasons",
+          "items": {
+            "type": "object",
+            "properties": {
+              "brand_id": {
+                "type": "string"
+              },
+              "name": {
+                "type": "string"
+              },
+              "reason": {
+                "type": "string",
+                "description": "Why this result was excluded. May be sanitized to protect confidential brand rules."
+              },
+              "suggestions": {
+                "type": "array",
+                "description": "Actionable alternatives if the exclusion is fixable (e.g., 'Available in BE and DE markets'). Absent if the exclusion is final.",
+                "items": {
+                  "type": "string"
+                }
+              }
+            },
+            "required": [
+              "brand_id",
+              "reason"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "rights"
       ],
-      "title": "GetRightsSuccess"
-    },
-    {
       "additionalProperties": true,
       "not": {
-        "anyOf": [
-          {
-            "required": [
-              "rights"
-            ]
-          }
+        "required": [
+          "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "GetRightsError",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -207,9 +200,16 @@
       "required": [
         "errors"
       ],
-      "title": "GetRightsError"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "rights"
+            ]
+          }
+        ]
+      }
     }
-  ],
-  "title": "Get Rights Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/revocation-notification.json b/schemas/cache/brand/revocation-notification.json
new file mode 100644
index 000000000..9bb1fbde0
--- /dev/null
+++ b/schemas/cache/brand/revocation-notification.json
@@ -0,0 +1,51 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Revocation Notification",
+  "description": "Payload sent by a rights holder to a buyer's revocation_webhook when rights are revoked. The buyer must cease creative delivery by effective_at. Partial revocation is supported \u2014 if revoked_uses is present, only those uses are revoked.",
+  "type": "object",
+  "properties": {
+    "notification_id": {
+      "type": "string",
+      "description": "Unique identifier for this notification. Buyers use this for deduplication \u2014 the same revocation may be delivered multiple times."
+    },
+    "rights_id": {
+      "type": "string",
+      "description": "The revoked rights grant identifier"
+    },
+    "brand_id": {
+      "type": "string",
+      "description": "Brand identifier of the rights subject"
+    },
+    "reason": {
+      "type": "string",
+      "description": "Human-readable reason for revocation"
+    },
+    "effective_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the revocation takes effect. Immediate revocations use current time. Grace periods use a future time. The buyer must stop serving creative using these rights by this time."
+    },
+    "revoked_uses": {
+      "type": "array",
+      "description": "If present, only these uses are revoked (partial revocation). If absent, all uses under the grant are revoked.",
+      "items": {
+        "$ref": "../enums/right-use.json"
+      },
+      "minItems": 1
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "notification_id",
+    "rights_id",
+    "brand_id",
+    "reason",
+    "effective_at"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/brand/rights-pricing-option.json b/schemas/cache/brand/rights-pricing-option.json
index a46f964b5..0a251b18b 100644
--- a/schemas/cache/brand/rights-pricing-option.json
+++ b/schemas/cache/brand/rights-pricing-option.json
@@ -1,36 +1,37 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Rights Pricing Option",
   "description": "A pricing option for licensable rights. Separate from media-buy pricing options \u2014 rights pricing includes period, impression caps, overage rates, and use-type scoping.",
+  "type": "object",
   "properties": {
-    "currency": {
-      "description": "ISO 4217 currency code",
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "description": {
-      "description": "Human-readable description of this pricing option",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "impression_cap": {
-      "description": "Maximum impressions included in this pricing option per period",
-      "minimum": 1,
-      "type": "integer"
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option. Referenced in acquire_rights and report_usage."
     },
     "model": {
       "$ref": "../enums/pricing-model.json",
       "description": "Pricing model (cpm, flat_rate, etc.)"
     },
-    "overage_cpm": {
-      "description": "CPM rate applied to impressions exceeding the impression_cap",
+    "price": {
+      "type": "number",
       "minimum": 0,
-      "type": "number"
+      "description": "Price amount. Interpretation depends on model: CPM = cost per 1,000 impressions, flat_rate = fixed cost per period."
+    },
+    "currency": {
+      "type": "string",
+      "pattern": "^[A-Z]{3}$",
+      "description": "ISO 4217 currency code"
+    },
+    "uses": {
+      "type": "array",
+      "description": "Which rights uses this pricing option covers. A single option can bundle multiple uses (e.g., likeness + voice).",
+      "items": {
+        "$ref": "../enums/right-use.json"
+      },
+      "minItems": 1
     },
     "period": {
-      "description": "Billing period for flat_rate and time-based models",
+      "type": "string",
       "enum": [
         "daily",
         "weekly",
@@ -39,24 +40,24 @@
         "annual",
         "one_time"
       ],
-      "type": "string"
+      "description": "Billing period for flat_rate and time-based models"
     },
-    "price": {
-      "description": "Price amount. Interpretation depends on model: CPM = cost per 1,000 impressions, flat_rate = fixed cost per period.",
+    "impression_cap": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum impressions included in this pricing option per period"
+    },
+    "overage_cpm": {
+      "type": "number",
       "minimum": 0,
-      "type": "number"
+      "description": "CPM rate applied to impressions exceeding the impression_cap"
     },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option. Referenced in acquire_rights and report_usage.",
-      "type": "string"
+    "description": {
+      "type": "string",
+      "description": "Human-readable description of this pricing option"
     },
-    "uses": {
-      "description": "Which rights uses this pricing option covers. A single option can bundle multiple uses (e.g., likeness + voice).",
-      "items": {
-        "$ref": "../enums/right-use.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -66,6 +67,5 @@
     "currency",
     "uses"
   ],
-  "title": "Rights Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/rights-terms.json b/schemas/cache/brand/rights-terms.json
index ba0f6b84c..f50e7763c 100644
--- a/schemas/cache/brand/rights-terms.json
+++ b/schemas/cache/brand/rights-terms.json
@@ -1,46 +1,22 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Rights Terms",
   "description": "Contractual terms for a rights grant. Shared between acquire_rights and update_rights responses.",
+  "type": "object",
   "properties": {
-    "amount": {
-      "minimum": 0,
-      "type": "number"
-    },
-    "currency": {
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "end_date": {
-      "format": "date",
+    "pricing_option_id": {
       "type": "string"
     },
-    "exclusivity": {
-      "additionalProperties": true,
-      "description": "Exclusivity terms if applicable",
-      "properties": {
-        "countries": {
-          "items": {
-            "pattern": "^[A-Z]{2}$",
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "scope": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "impression_cap": {
-      "minimum": 1,
-      "type": "integer"
+    "amount": {
+      "type": "number",
+      "minimum": 0
     },
-    "overage_cpm": {
-      "minimum": 0,
-      "type": "number"
+    "currency": {
+      "type": "string",
+      "pattern": "^[A-Z]{3}$"
     },
     "period": {
+      "type": "string",
       "enum": [
         "daily",
         "weekly",
@@ -48,21 +24,46 @@
         "quarterly",
         "annual",
         "one_time"
-      ],
-      "type": "string"
-    },
-    "pricing_option_id": {
-      "type": "string"
-    },
-    "start_date": {
-      "format": "date",
-      "type": "string"
+      ]
     },
     "uses": {
+      "type": "array",
       "items": {
         "$ref": "../enums/right-use.json"
+      }
+    },
+    "impression_cap": {
+      "type": "integer",
+      "minimum": 1
+    },
+    "overage_cpm": {
+      "type": "number",
+      "minimum": 0
+    },
+    "start_date": {
+      "type": "string",
+      "format": "date"
+    },
+    "end_date": {
+      "type": "string",
+      "format": "date"
+    },
+    "exclusivity": {
+      "type": "object",
+      "description": "Exclusivity terms if applicable",
+      "properties": {
+        "scope": {
+          "type": "string"
+        },
+        "countries": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          }
+        }
       },
-      "type": "array"
+      "additionalProperties": true
     }
   },
   "required": [
@@ -71,6 +72,5 @@
     "currency",
     "uses"
   ],
-  "title": "Rights Terms",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/brand/update-rights-request.json b/schemas/cache/brand/update-rights-request.json
new file mode 100644
index 000000000..90323293e
--- /dev/null
+++ b/schemas/cache/brand/update-rights-request.json
@@ -0,0 +1,58 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Rights Request",
+  "description": "Modify an existing rights grant \u2014 extend dates, adjust impression caps, change pricing, or pause/resume. Parallels update_media_buy. Only the fields provided are updated; omitted fields remain unchanged.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "rights_id": {
+      "type": "string",
+      "description": "Rights grant identifier from acquire_rights response"
+    },
+    "end_date": {
+      "type": "string",
+      "format": "date",
+      "description": "New end date for the rights grant (must be >= current end_date). Extending the grant may re-issue generation credentials with updated expiration."
+    },
+    "impression_cap": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "New impression cap for the grant. Must be >= impressions already delivered."
+    },
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Switch to a different pricing option from the original get_rights offering. The new option must be compatible with the existing grant's uses and countries."
+    },
+    "paused": {
+      "type": "boolean",
+      "description": "Pause or resume the rights grant. When paused, generation credentials are suspended and creative delivery should stop. When resumed, credentials are re-activated."
+    },
+    "push_notification_config": {
+      "$ref": "../core/push-notification-config.json",
+      "description": "Webhook for async update notifications if the update requires approval"
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated idempotency key for safe retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "rights_id"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/brand/update-rights-response.json b/schemas/cache/brand/update-rights-response.json
new file mode 100644
index 000000000..5bca70983
--- /dev/null
+++ b/schemas/cache/brand/update-rights-response.json
@@ -0,0 +1,96 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Rights Response",
+  "description": "Result of a rights update request. Returns updated terms and re-issued credentials on success, or errors if the update cannot be applied.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "UpdateRightsSuccess",
+      "properties": {
+        "rights_id": {
+          "type": "string",
+          "description": "Rights grant identifier"
+        },
+        "terms": {
+          "$ref": "rights-terms.json",
+          "description": "Updated contractual terms (same shape as acquire_rights acquired response)"
+        },
+        "generation_credentials": {
+          "type": "array",
+          "description": "Re-issued credentials reflecting updated terms (new expiration dates, adjusted caps)",
+          "items": {
+            "$ref": "../core/generation-credential.json"
+          }
+        },
+        "rights_constraint": {
+          "$ref": "../core/rights-constraint.json",
+          "description": "Updated rights constraint for re-embedding in creative manifests"
+        },
+        "paused": {
+          "type": "boolean",
+          "description": "Whether the grant is currently paused. Included when the update changes pause state."
+        },
+        "implementation_date": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "format": "date-time",
+          "description": "When changes take effect (null if pending approval from rights holder)"
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "rights_id",
+        "terms"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "UpdateRightsError",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "rights_id"
+            ]
+          },
+          {
+            "required": [
+              "terms"
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/calibrate-content-request.json b/schemas/cache/bundled/content-standards/calibrate-content-request.json
new file mode 100644
index 000000000..97ad32a0c
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/calibrate-content-request.json
@@ -0,0 +1,1892 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Calibrate Content Request",
+  "description": "Request parameters for evaluating content during calibration. Multi-turn dialogue is handled at the protocol layer via contextId.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "standards_id": {
+      "type": "string",
+      "description": "Standards configuration to calibrate against"
+    },
+    "artifact": {
+      "title": "Artifact",
+      "description": "Artifact to evaluate",
+      "type": "object",
+      "properties": {
+        "property_rid": {
+          "type": "string",
+          "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+        },
+        "artifact_id": {
+          "type": "string",
+          "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        },
+        "variant_id": {
+          "type": "string",
+          "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        },
+        "format_id": {
+          "title": "Format ID",
+          "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+          "type": "object",
+          "properties": {
+            "agent_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+            },
+            "id": {
+              "type": "string",
+              "pattern": "^[a-zA-Z0-9_-]+$",
+              "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+            },
+            "width": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "height": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "duration_ms": {
+              "type": "number",
+              "minimum": 1,
+              "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+            }
+          },
+          "required": [
+            "agent_url",
+            "id"
+          ],
+          "additionalProperties": true,
+          "dependencies": {
+            "width": [
+              "height"
+            ],
+            "height": [
+              "width"
+            ]
+          }
+        },
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+        },
+        "published_time": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the artifact was published (ISO 8601 format)"
+        },
+        "last_update_time": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the artifact was last modified (ISO 8601 format)"
+        },
+        "assets": {
+          "type": "array",
+          "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+          "maxItems": 200,
+          "items": {
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "Text block (paragraph, heading, etc.)",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "text"
+                  },
+                  "role": {
+                    "type": "string",
+                    "enum": [
+                      "title",
+                      "paragraph",
+                      "heading",
+                      "caption",
+                      "quote",
+                      "list_item",
+                      "description"
+                    ],
+                    "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                  },
+                  "content": {
+                    "type": "string",
+                    "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                    "maxLength": 100000
+                  },
+                  "content_format": {
+                    "type": "string",
+                    "enum": [
+                      "text/plain",
+                      "text/markdown",
+                      "text/html",
+                      "application/json"
+                    ],
+                    "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                    "default": "text/plain"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                  },
+                  "heading_level": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "maximum": 6,
+                    "description": "Heading level (1-6), only for role=heading"
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance for this text block, overrides artifact-level provenance",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "type",
+                  "content"
+                ]
+              },
+              {
+                "type": "object",
+                "description": "Image asset",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "image"
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Image URL"
+                  },
+                  "access": {
+                    "$ref": "#/$defs/asset_access",
+                    "description": "Authentication for secured URLs"
+                  },
+                  "alt_text": {
+                    "type": "string",
+                    "description": "Alt text or image description"
+                  },
+                  "caption": {
+                    "type": "string",
+                    "description": "Image caption"
+                  },
+                  "width": {
+                    "type": "integer",
+                    "description": "Image width in pixels"
+                  },
+                  "height": {
+                    "type": "integer",
+                    "description": "Image height in pixels"
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance for this image, overrides artifact-level provenance",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "type",
+                  "url"
+                ]
+              },
+              {
+                "type": "object",
+                "description": "Video asset",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "video"
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Video URL"
+                  },
+                  "access": {
+                    "$ref": "#/$defs/asset_access",
+                    "description": "Authentication for secured URLs"
+                  },
+                  "duration_ms": {
+                    "type": "integer",
+                    "description": "Video duration in milliseconds"
+                  },
+                  "transcript": {
+                    "type": "string",
+                    "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                    "maxLength": 200000
+                  },
+                  "transcript_format": {
+                    "type": "string",
+                    "enum": [
+                      "text/plain",
+                      "text/markdown",
+                      "application/json"
+                    ],
+                    "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                    "default": "text/plain"
+                  },
+                  "transcript_source": {
+                    "type": "string",
+                    "enum": [
+                      "original_script",
+                      "subtitles",
+                      "closed_captions",
+                      "dub",
+                      "generated"
+                    ],
+                    "description": "How the transcript was generated"
+                  },
+                  "thumbnail_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Video thumbnail URL"
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance for this video, overrides artifact-level provenance",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "type",
+                  "url"
+                ]
+              },
+              {
+                "type": "object",
+                "description": "Audio asset",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "audio"
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Audio URL"
+                  },
+                  "access": {
+                    "$ref": "#/$defs/asset_access",
+                    "description": "Authentication for secured URLs"
+                  },
+                  "duration_ms": {
+                    "type": "integer",
+                    "description": "Audio duration in milliseconds"
+                  },
+                  "transcript": {
+                    "type": "string",
+                    "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                    "maxLength": 200000
+                  },
+                  "transcript_format": {
+                    "type": "string",
+                    "enum": [
+                      "text/plain",
+                      "text/markdown",
+                      "application/json"
+                    ],
+                    "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                    "default": "text/plain"
+                  },
+                  "transcript_source": {
+                    "type": "string",
+                    "enum": [
+                      "original_script",
+                      "closed_captions",
+                      "generated"
+                    ],
+                    "description": "How the transcript was generated"
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance for this audio, overrides artifact-level provenance",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "type",
+                  "url"
+                ]
+              }
+            ]
+          }
+        },
+        "metadata": {
+          "type": "object",
+          "description": "Rich metadata extracted from the artifact",
+          "properties": {
+            "canonical": {
+              "type": "string",
+              "format": "uri",
+              "description": "Canonical URL"
+            },
+            "author": {
+              "type": "string",
+              "description": "Artifact author name"
+            },
+            "keywords": {
+              "type": "string",
+              "description": "Artifact keywords"
+            },
+            "open_graph": {
+              "type": "object",
+              "description": "Open Graph protocol metadata",
+              "additionalProperties": true
+            },
+            "twitter_card": {
+              "type": "object",
+              "description": "Twitter Card metadata",
+              "additionalProperties": true
+            },
+            "json_ld": {
+              "type": "array",
+              "description": "JSON-LD structured data (schema.org)",
+              "items": {
+                "type": "object"
+              }
+            }
+          },
+          "additionalProperties": true
+        },
+        "provenance": {
+          "title": "Provenance",
+          "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+          "type": "object",
+          "properties": {
+            "digital_source_type": {
+              "title": "Digital Source Type",
+              "description": "IPTC-aligned classification of AI involvement in producing this content",
+              "type": "string",
+              "enum": [
+                "digital_capture",
+                "digital_creation",
+                "trained_algorithmic_media",
+                "composite_with_trained_algorithmic_media",
+                "algorithmic_media",
+                "composite_capture",
+                "composite_synthetic",
+                "human_edits",
+                "data_driven_media"
+              ],
+              "enumDescriptions": {
+                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                "composite_capture": "Multiple digital captures composited together without AI",
+                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+              }
+            },
+            "ai_tool": {
+              "type": "object",
+              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                },
+                "version": {
+                  "type": "string",
+                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                },
+                "provider": {
+                  "type": "string",
+                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                }
+              },
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
+            },
+            "human_oversight": {
+              "type": "string",
+              "description": "Level of human involvement in the AI-assisted creation process",
+              "enum": [
+                "none",
+                "prompt_only",
+                "selected",
+                "edited",
+                "directed"
+              ],
+              "enumDescriptions": {
+                "none": "Fully automated with no human involvement in generation",
+                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                "selected": "Human selected from multiple AI-generated candidates",
+                "edited": "Human edited or refined AI-generated output",
+                "directed": "Human directed the creative process with AI as an assistive tool"
+              }
+            },
+            "declared_by": {
+              "type": "object",
+              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent or service that declared this provenance"
+                },
+                "role": {
+                  "type": "string",
+                  "enum": [
+                    "creator",
+                    "advertiser",
+                    "agency",
+                    "platform",
+                    "tool"
+                  ],
+                  "description": "Role of the declaring party in the supply chain",
+                  "enumDescriptions": {
+                    "creator": "The party that created or generated the content",
+                    "advertiser": "The brand or advertiser that owns the content",
+                    "agency": "Agency acting on behalf of the advertiser",
+                    "platform": "Ad platform or publisher that processed the content",
+                    "tool": "Automated tool or service that attached provenance metadata"
+                  }
+                }
+              },
+              "required": [
+                "role"
+              ],
+              "additionalProperties": true
+            },
+            "declared_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+            },
+            "created_time": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this content was created or generated (ISO 8601)"
+            },
+            "c2pa": {
+              "type": "object",
+              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+              "properties": {
+                "manifest_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL to the C2PA manifest store for this content"
+                }
+              },
+              "required": [
+                "manifest_url"
+              ],
+              "additionalProperties": true
+            },
+            "disclosure": {
+              "type": "object",
+              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+              "properties": {
+                "required": {
+                  "type": "boolean",
+                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                },
+                "jurisdictions": {
+                  "type": "array",
+                  "description": "Jurisdictions where disclosure obligations apply",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "country": {
+                        "type": "string",
+                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                      },
+                      "region": {
+                        "type": "string",
+                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                      },
+                      "regulation": {
+                        "type": "string",
+                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                      },
+                      "label_text": {
+                        "type": "string",
+                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                      },
+                      "render_guidance": {
+                        "type": "object",
+                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                        "minProperties": 1,
+                        "properties": {
+                          "persistence": {
+                            "title": "Disclosure Persistence",
+                            "description": "How long the disclosure must persist during content playback or display",
+                            "type": "string",
+                            "enum": [
+                              "continuous",
+                              "initial",
+                              "flexible"
+                            ],
+                            "enumDescriptions": {
+                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                            }
+                          },
+                          "min_duration_ms": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                          },
+                          "positions": {
+                            "type": "array",
+                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                            "items": {
+                              "title": "Disclosure Position",
+                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                              "type": "string",
+                              "enum": [
+                                "prominent",
+                                "footer",
+                                "audio",
+                                "subtitle",
+                                "overlay",
+                                "end_card",
+                                "pre_roll",
+                                "companion"
+                              ]
+                            },
+                            "minItems": 1,
+                            "uniqueItems": true
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "country",
+                      "regulation"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "required"
+              ],
+              "additionalProperties": true
+            },
+            "verification": {
+              "type": "array",
+              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+              "minItems": 1,
+              "items": {
+                "type": "object",
+                "properties": {
+                  "verified_by": {
+                    "type": "string",
+                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                  },
+                  "verified_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the verification was performed (ISO 8601)"
+                  },
+                  "result": {
+                    "type": "string",
+                    "enum": [
+                      "authentic",
+                      "ai_generated",
+                      "ai_modified",
+                      "inconclusive"
+                    ],
+                    "description": "Verification outcome"
+                  },
+                  "confidence": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                  },
+                  "details_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL to the full verification report"
+                  }
+                },
+                "required": [
+                  "verified_by",
+                  "result"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "identifiers": {
+          "type": "object",
+          "description": "Platform-specific identifiers for this artifact",
+          "properties": {
+            "apple_podcast_id": {
+              "type": "string",
+              "description": "Apple Podcasts ID"
+            },
+            "spotify_collection_id": {
+              "type": "string",
+              "description": "Spotify collection ID"
+            },
+            "podcast_guid": {
+              "type": "string",
+              "description": "Podcast GUID (from RSS feed)"
+            },
+            "youtube_video_id": {
+              "type": "string",
+              "description": "YouTube video ID"
+            },
+            "rss_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "RSS feed URL"
+            }
+          },
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "property_rid",
+        "artifact_id",
+        "assets"
+      ],
+      "additionalProperties": true,
+      "$defs": {
+        "asset_access": {
+          "type": "object",
+          "description": "Authentication for accessing secured asset URLs",
+          "oneOf": [
+            {
+              "type": "object",
+              "description": "Bearer token authentication",
+              "properties": {
+                "method": {
+                  "type": "string",
+                  "const": "bearer_token"
+                },
+                "token": {
+                  "type": "string",
+                  "description": "OAuth2 bearer token for Authorization header"
+                }
+              },
+              "required": [
+                "method",
+                "token"
+              ]
+            },
+            {
+              "type": "object",
+              "description": "Service account authentication (GCP, AWS)",
+              "properties": {
+                "method": {
+                  "type": "string",
+                  "const": "service_account"
+                },
+                "provider": {
+                  "type": "string",
+                  "enum": [
+                    "gcp",
+                    "aws"
+                  ],
+                  "description": "Cloud provider"
+                },
+                "credentials": {
+                  "type": "object",
+                  "description": "Service account credentials",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "method",
+                "provider"
+              ]
+            },
+            {
+              "type": "object",
+              "description": "Pre-signed URL (credentials embedded in URL)",
+              "properties": {
+                "method": {
+                  "type": "string",
+                  "const": "signed_url"
+                }
+              },
+              "required": [
+                "method"
+              ]
+            }
+          ]
+        }
+      }
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "standards_id",
+    "artifact"
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.167Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/calibrate-content-response.json b/schemas/cache/bundled/content-standards/calibrate-content-response.json
new file mode 100644
index 000000000..03707b939
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/calibrate-content-response.json
@@ -0,0 +1,166 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Calibrate Content Response",
+  "description": "Response payload with verdict and detailed explanations for collaborative calibration",
+  "type": "object",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Success response with detailed calibration feedback",
+      "properties": {
+        "verdict": {
+          "type": "string",
+          "enum": [
+            "pass",
+            "fail"
+          ],
+          "description": "Overall pass/fail verdict for the content evaluation"
+        },
+        "confidence": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 1,
+          "description": "Model confidence in the verdict (0-1)"
+        },
+        "explanation": {
+          "type": "string",
+          "description": "Detailed natural language explanation of the decision"
+        },
+        "features": {
+          "type": "array",
+          "description": "Per-feature breakdown with explanations. Mirrors validate_content_delivery feature shape so calibration loops can correlate against production verdicts by policy_id.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'competitor_adjacency'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact'. Reserved prefixes: 'record:', 'delivery:'."
+              },
+              "status": {
+                "type": "string",
+                "enum": [
+                  "passed",
+                  "failed",
+                  "warning",
+                  "unevaluated"
+                ],
+                "description": "Evaluation status for this feature"
+              },
+              "policy_id": {
+                "type": "string",
+                "description": "Policy ID that triggered this result. Enables the calibration loop to iterate on specific policies by correlating sample outcomes to policy ids."
+              },
+              "explanation": {
+                "type": "string",
+                "description": "Human-readable explanation of why this feature passed or failed"
+              },
+              "confidence": {
+                "type": "number",
+                "minimum": 0,
+                "maximum": 1,
+                "description": "Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones."
+              }
+            },
+            "required": [
+              "feature_id",
+              "status"
+            ]
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "verdict"
+      ]
+    },
+    {
+      "type": "object",
+      "description": "Error response",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ]
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.169Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/create-content-standards-request.json b/schemas/cache/bundled/content-standards/create-content-standards-request.json
new file mode 100644
index 000000000..51b3ac619
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/create-content-standards-request.json
@@ -0,0 +1,4143 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Content Standards Request",
+  "description": "Request parameters for creating a new content standards configuration",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "scope": {
+      "type": "object",
+      "description": "Where this standards configuration applies",
+      "properties": {
+        "countries_all": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic)."
+        },
+        "channels_any": {
+          "type": "array",
+          "items": {
+            "title": "Media Channel",
+            "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+            "type": "string",
+            "enum": [
+              "display",
+              "olv",
+              "social",
+              "search",
+              "ctv",
+              "linear_tv",
+              "radio",
+              "streaming_audio",
+              "podcast",
+              "dooh",
+              "ooh",
+              "print",
+              "cinema",
+              "email",
+              "gaming",
+              "retail_media",
+              "influencer",
+              "affiliate",
+              "product_placement",
+              "sponsored_intelligence"
+            ],
+            "enumDescriptions": {
+              "display": "Digital display advertising (banners, native, rich media) across web and app",
+              "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+              "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+              "search": "Search engine advertising and search networks",
+              "ctv": "Connected TV and streaming on television screens",
+              "linear_tv": "Traditional broadcast and cable television",
+              "radio": "Traditional AM/FM radio broadcast",
+              "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+              "podcast": "Podcast advertising (host-read or dynamically inserted)",
+              "dooh": "Digital out-of-home screens in public spaces",
+              "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+              "print": "Newspapers, magazines, and other print publications",
+              "cinema": "Movie theater advertising",
+              "email": "Email advertising and sponsored newsletter content",
+              "gaming": "In-game advertising across platforms",
+              "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+              "influencer": "Creator and influencer marketing partnerships",
+              "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+              "product_placement": "Product placement, branded content, and sponsorship integrations",
+              "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+            }
+          },
+          "minItems": 1,
+          "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic)."
+        },
+        "languages_any": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards."
+        },
+        "description": {
+          "type": "string",
+          "description": "Human-readable description of this scope"
+        }
+      },
+      "required": [
+        "languages_any"
+      ]
+    },
+    "registry_policy_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Registry policy IDs to use as the evaluation basis for this content standard. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria. The 'policy' field becomes optional when registry_policy_ids is provided."
+    },
+    "policies": {
+      "type": "array",
+      "description": "Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id and carries its own enforcement (must|should); governance findings reference the policy_id that triggered them. Inline bespoke policies can omit version/name/category (defaulted by the server). Combines with registry_policy_ids \u2014 registry policies and bespoke policies are both evaluated. Bespoke policy_ids MUST be flat (no colons/slashes) to avoid collision with namespaced registry ids.",
+      "items": {
+        "title": "Policy Entry",
+        "description": "A policy \u2014 either published to the shared registry (with full regulatory metadata) or authored inline by a buyer for their own campaign (lightweight, metadata optional). Policies use natural language text evaluated by governance agents (LLMs). Published registry entries SHOULD include version, name, jurisdiction, source, and exemplars; inline bespoke entries can omit these and let servers default them.",
+        "type": "object",
+        "properties": {
+          "policy_id": {
+            "type": "string",
+            "description": "Unique identifier for this policy. Registry-published ids are canonical (e.g., \"uk_hfss\", \"garm:brand_safety:violence\"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio)."
+          },
+          "source": {
+            "type": "string",
+            "enum": [
+              "registry",
+              "inline"
+            ],
+            "default": "inline",
+            "description": "Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+          },
+          "version": {
+            "type": "string",
+            "description": "Semver version string (e.g., \"1.0.0\"). Incremented when policy content changes. Optional for inline bespoke policies \u2014 defaults to \"1.0.0\". SHOULD be provided for registry-published policies."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name (e.g., \"UK HFSS Restrictions\"). Optional for inline bespoke policies \u2014 servers MAY default to policy_id."
+          },
+          "description": {
+            "type": "string",
+            "description": "Brief summary of what this policy covers."
+          },
+          "category": {
+            "title": "Policy Category",
+            "description": "The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies \u2014 defaults to \"standard\".",
+            "type": "string",
+            "enum": [
+              "regulation",
+              "standard"
+            ],
+            "enumDescriptions": {
+              "regulation": "Legal requirement with jurisdiction scope. Violations have legal consequences. Enforcement is hard (must).",
+              "standard": "Industry best practice, voluntary but recommended. Protects brand value and campaign effectiveness. Enforcement is soft (should)."
+            }
+          },
+          "enforcement": {
+            "title": "Policy Enforcement Level",
+            "description": "How governance agents treat violations. Regulations are typically \"must\"; standards are typically \"should\".",
+            "type": "string",
+            "enum": [
+              "must",
+              "should",
+              "may"
+            ],
+            "enumDescriptions": {
+              "must": "Legal requirement. Governance agents reject actions that violate this policy.",
+              "should": "Best practice. Governance agents warn on violations but do not block.",
+              "may": "Recommendation. Governance agents log for informational purposes only."
+            }
+          },
+          "jurisdictions": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific."
+          },
+          "region_aliases": {
+            "type": "object",
+            "description": "Named groups of jurisdictions for convenience (e.g., {\"EU\": [\"AT\",\"BE\",\"BG\",...]}). Governance agents expand aliases when matching against a plan's target jurisdictions.",
+            "additionalProperties": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            }
+          },
+          "policy_categories": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "Regulatory categories this policy belongs to (e.g., [\"children_directed\", \"age_restricted\"]). Used for automatic matching against a campaign plan's declared policy_categories. A single policy can belong to multiple categories."
+          },
+          "channels": {
+            "type": "array",
+            "items": {
+              "title": "Media Channel",
+              "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+              "type": "string",
+              "enum": [
+                "display",
+                "olv",
+                "social",
+                "search",
+                "ctv",
+                "linear_tv",
+                "radio",
+                "streaming_audio",
+                "podcast",
+                "dooh",
+                "ooh",
+                "print",
+                "cinema",
+                "email",
+                "gaming",
+                "retail_media",
+                "influencer",
+                "affiliate",
+                "product_placement",
+                "sponsored_intelligence"
+              ],
+              "enumDescriptions": {
+                "display": "Digital display advertising (banners, native, rich media) across web and app",
+                "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                "search": "Search engine advertising and search networks",
+                "ctv": "Connected TV and streaming on television screens",
+                "linear_tv": "Traditional broadcast and cable television",
+                "radio": "Traditional AM/FM radio broadcast",
+                "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                "dooh": "Digital out-of-home screens in public spaces",
+                "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                "print": "Newspapers, magazines, and other print publications",
+                "cinema": "Movie theater advertising",
+                "email": "Email advertising and sponsored newsletter content",
+                "gaming": "In-game advertising across platforms",
+                "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                "influencer": "Creator and influencer marketing partnerships",
+                "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                "product_placement": "Product placement, branded content, and sponsorship integrations",
+                "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+              }
+            },
+            "description": "Advertising channels this policy applies to. If omitted or null, the policy applies to all channels."
+          },
+          "governance_domains": {
+            "type": "array",
+            "items": {
+              "title": "Governance Domain",
+              "description": "Governance sub-domains that a registry policy applies to. Used to indicate which types of governance agents can evaluate this policy.",
+              "type": "string",
+              "enum": [
+                "campaign",
+                "property",
+                "creative",
+                "content_standards"
+              ]
+            },
+            "description": "Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains [\"creative\", \"property\"] can be declared as a feature by both creative and property governance agents."
+          },
+          "effective_date": {
+            "type": "string",
+            "format": "date",
+            "description": "ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level."
+          },
+          "sunset_date": {
+            "type": "string",
+            "format": "date",
+            "description": "ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration."
+          },
+          "source_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Link to the source regulation, standard, or legislation."
+          },
+          "source_name": {
+            "type": "string",
+            "description": "Name of the issuing body (e.g., \"UK Food Standards Agency\", \"US Federal Trade Commission\")."
+          },
+          "policy": {
+            "type": "string",
+            "description": "Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy."
+          },
+          "guidance": {
+            "type": "string",
+            "description": "Implementation notes for governance agent developers. Not used in evaluation prompts."
+          },
+          "exemplars": {
+            "type": "object",
+            "description": "Calibration examples for governance agents, following the Content Standards pattern.",
+            "properties": {
+              "pass": {
+                "type": "array",
+                "items": {
+                  "$ref": "#/$defs/exemplar"
+                },
+                "description": "Scenarios that comply with this policy."
+              },
+              "fail": {
+                "type": "array",
+                "items": {
+                  "$ref": "#/$defs/exemplar"
+                },
+                "description": "Scenarios that violate this policy."
+              }
+            },
+            "additionalProperties": false
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "policy_id",
+          "enforcement",
+          "policy"
+        ],
+        "additionalProperties": false,
+        "$defs": {
+          "exemplar": {
+            "type": "object",
+            "properties": {
+              "scenario": {
+                "type": "string",
+                "description": "A concrete scenario describing an advertising action or configuration."
+              },
+              "explanation": {
+                "type": "string",
+                "description": "Why this scenario passes or fails the policy."
+              }
+            },
+            "required": [
+              "scenario",
+              "explanation"
+            ],
+            "additionalProperties": false
+          }
+        }
+      },
+      "minItems": 1
+    },
+    "calibration_exemplars": {
+      "type": "object",
+      "description": "Training/test set to calibrate policy interpretation. Use URL references for pages to be fetched and analyzed, or full artifacts for pre-extracted content.",
+      "properties": {
+        "pass": {
+          "type": "array",
+          "items": {
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "URL reference - specific page to fetch and evaluate",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "url",
+                    "description": "Indicates this is a URL reference"
+                  },
+                  "value": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ]
+              },
+              {
+                "title": "Artifact",
+                "description": "Full artifact with pre-extracted content (text, images, video, audio)",
+                "type": "object",
+                "properties": {
+                  "property_rid": {
+                    "type": "string",
+                    "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                  },
+                  "artifact_id": {
+                    "type": "string",
+                    "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                  },
+                  "variant_id": {
+                    "type": "string",
+                    "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                  },
+                  "format_id": {
+                    "title": "Format ID",
+                    "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                  },
+                  "published_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was published (ISO 8601 format)"
+                  },
+                  "last_update_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was last modified (ISO 8601 format)"
+                  },
+                  "assets": {
+                    "type": "array",
+                    "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                    "maxItems": 200,
+                    "items": {
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Text block (paragraph, heading, etc.)",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "text"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "title",
+                                "paragraph",
+                                "heading",
+                                "caption",
+                                "quote",
+                                "list_item",
+                                "description"
+                              ],
+                              "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 100000
+                            },
+                            "content_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "text/html",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                            },
+                            "heading_level": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "maximum": 6,
+                              "description": "Heading level (1-6), only for role=heading"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this text block, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "content"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Image asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "image"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Image URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alt text or image description"
+                            },
+                            "caption": {
+                              "type": "string",
+                              "description": "Image caption"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "description": "Image width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "description": "Image height in pixels"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this image, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Video asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "video"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "subtitles",
+                                "closed_captions",
+                                "dub",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "thumbnail_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video thumbnail URL"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this video, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Audio asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "audio"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Audio URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "closed_captions",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this audio, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "metadata": {
+                    "type": "object",
+                    "description": "Rich metadata extracted from the artifact",
+                    "properties": {
+                      "canonical": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Canonical URL"
+                      },
+                      "author": {
+                        "type": "string",
+                        "description": "Artifact author name"
+                      },
+                      "keywords": {
+                        "type": "string",
+                        "description": "Artifact keywords"
+                      },
+                      "open_graph": {
+                        "type": "object",
+                        "description": "Open Graph protocol metadata",
+                        "additionalProperties": true
+                      },
+                      "twitter_card": {
+                        "type": "object",
+                        "description": "Twitter Card metadata",
+                        "additionalProperties": true
+                      },
+                      "json_ld": {
+                        "type": "array",
+                        "description": "JSON-LD structured data (schema.org)",
+                        "items": {
+                          "type": "object"
+                        }
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "identifiers": {
+                    "type": "object",
+                    "description": "Platform-specific identifiers for this artifact",
+                    "properties": {
+                      "apple_podcast_id": {
+                        "type": "string",
+                        "description": "Apple Podcasts ID"
+                      },
+                      "spotify_collection_id": {
+                        "type": "string",
+                        "description": "Spotify collection ID"
+                      },
+                      "podcast_guid": {
+                        "type": "string",
+                        "description": "Podcast GUID (from RSS feed)"
+                      },
+                      "youtube_video_id": {
+                        "type": "string",
+                        "description": "YouTube video ID"
+                      },
+                      "rss_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "RSS feed URL"
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "property_rid",
+                  "artifact_id",
+                  "assets"
+                ],
+                "additionalProperties": true,
+                "$defs": {
+                  "asset_access": {
+                    "type": "object",
+                    "description": "Authentication for accessing secured asset URLs",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Bearer token authentication",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "bearer_token"
+                          },
+                          "token": {
+                            "type": "string",
+                            "description": "OAuth2 bearer token for Authorization header"
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "token"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Service account authentication (GCP, AWS)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "service_account"
+                          },
+                          "provider": {
+                            "type": "string",
+                            "enum": [
+                              "gcp",
+                              "aws"
+                            ],
+                            "description": "Cloud provider"
+                          },
+                          "credentials": {
+                            "type": "object",
+                            "description": "Service account credentials",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "provider"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Pre-signed URL (credentials embedded in URL)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "signed_url"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      }
+                    ]
+                  }
+                }
+              }
+            ]
+          },
+          "description": "Content that passes the standards"
+        },
+        "fail": {
+          "type": "array",
+          "items": {
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "URL reference - specific page to fetch and evaluate",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "url",
+                    "description": "Indicates this is a URL reference"
+                  },
+                  "value": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ]
+              },
+              {
+                "title": "Artifact",
+                "description": "Full artifact with pre-extracted content (text, images, video, audio)",
+                "type": "object",
+                "properties": {
+                  "property_rid": {
+                    "type": "string",
+                    "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                  },
+                  "artifact_id": {
+                    "type": "string",
+                    "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                  },
+                  "variant_id": {
+                    "type": "string",
+                    "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                  },
+                  "format_id": {
+                    "title": "Format ID",
+                    "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                  },
+                  "published_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was published (ISO 8601 format)"
+                  },
+                  "last_update_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was last modified (ISO 8601 format)"
+                  },
+                  "assets": {
+                    "type": "array",
+                    "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                    "maxItems": 200,
+                    "items": {
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Text block (paragraph, heading, etc.)",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "text"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "title",
+                                "paragraph",
+                                "heading",
+                                "caption",
+                                "quote",
+                                "list_item",
+                                "description"
+                              ],
+                              "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 100000
+                            },
+                            "content_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "text/html",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                            },
+                            "heading_level": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "maximum": 6,
+                              "description": "Heading level (1-6), only for role=heading"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this text block, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "content"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Image asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "image"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Image URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alt text or image description"
+                            },
+                            "caption": {
+                              "type": "string",
+                              "description": "Image caption"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "description": "Image width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "description": "Image height in pixels"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this image, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Video asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "video"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "subtitles",
+                                "closed_captions",
+                                "dub",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "thumbnail_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video thumbnail URL"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this video, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Audio asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "audio"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Audio URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "closed_captions",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this audio, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "metadata": {
+                    "type": "object",
+                    "description": "Rich metadata extracted from the artifact",
+                    "properties": {
+                      "canonical": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Canonical URL"
+                      },
+                      "author": {
+                        "type": "string",
+                        "description": "Artifact author name"
+                      },
+                      "keywords": {
+                        "type": "string",
+                        "description": "Artifact keywords"
+                      },
+                      "open_graph": {
+                        "type": "object",
+                        "description": "Open Graph protocol metadata",
+                        "additionalProperties": true
+                      },
+                      "twitter_card": {
+                        "type": "object",
+                        "description": "Twitter Card metadata",
+                        "additionalProperties": true
+                      },
+                      "json_ld": {
+                        "type": "array",
+                        "description": "JSON-LD structured data (schema.org)",
+                        "items": {
+                          "type": "object"
+                        }
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "identifiers": {
+                    "type": "object",
+                    "description": "Platform-specific identifiers for this artifact",
+                    "properties": {
+                      "apple_podcast_id": {
+                        "type": "string",
+                        "description": "Apple Podcasts ID"
+                      },
+                      "spotify_collection_id": {
+                        "type": "string",
+                        "description": "Spotify collection ID"
+                      },
+                      "podcast_guid": {
+                        "type": "string",
+                        "description": "Podcast GUID (from RSS feed)"
+                      },
+                      "youtube_video_id": {
+                        "type": "string",
+                        "description": "YouTube video ID"
+                      },
+                      "rss_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "RSS feed URL"
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "property_rid",
+                  "artifact_id",
+                  "assets"
+                ],
+                "additionalProperties": true,
+                "$defs": {
+                  "asset_access": {
+                    "type": "object",
+                    "description": "Authentication for accessing secured asset URLs",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Bearer token authentication",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "bearer_token"
+                          },
+                          "token": {
+                            "type": "string",
+                            "description": "OAuth2 bearer token for Authorization header"
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "token"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Service account authentication (GCP, AWS)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "service_account"
+                          },
+                          "provider": {
+                            "type": "string",
+                            "enum": [
+                              "gcp",
+                              "aws"
+                            ],
+                            "description": "Cloud provider"
+                          },
+                          "credentials": {
+                            "type": "object",
+                            "description": "Service account credentials",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "provider"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Pre-signed URL (credentials embedded in URL)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "signed_url"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      }
+                    ]
+                  }
+                }
+              }
+            ]
+          },
+          "description": "Content that fails the standards"
+        }
+      }
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate content standards creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "scope"
+  ],
+  "anyOf": [
+    {
+      "required": [
+        "policies"
+      ]
+    },
+    {
+      "required": [
+        "registry_policy_ids"
+      ]
+    }
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.177Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/create-content-standards-response.json b/schemas/cache/bundled/content-standards/create-content-standards-response.json
new file mode 100644
index 000000000..6d137f7c3
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/create-content-standards-response.json
@@ -0,0 +1,115 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Content Standards Response",
+  "description": "Response payload for creating a content standards configuration",
+  "type": "object",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Success response - returns the created standards identifier",
+      "properties": {
+        "standards_id": {
+          "type": "string",
+          "description": "Unique identifier for the created standards configuration"
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "standards_id"
+      ]
+    },
+    {
+      "type": "object",
+      "description": "Error response",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "conflicting_standards_id": {
+          "type": "string",
+          "description": "If the error is a scope conflict, the ID of the existing standards that conflict"
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ]
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.181Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/get-content-standards-request.json b/schemas/cache/bundled/content-standards/get-content-standards-request.json
new file mode 100644
index 000000000..5343dfa4c
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/get-content-standards-request.json
@@ -0,0 +1,37 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Content Standards Request",
+  "description": "Request parameters for retrieving content safety policies",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "standards_id": {
+      "type": "string",
+      "description": "Identifier for the standards configuration to retrieve"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "standards_id"
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.182Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/get-content-standards-response.json b/schemas/cache/bundled/content-standards/get-content-standards-response.json
new file mode 100644
index 000000000..058f507e0
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/get-content-standards-response.json
@@ -0,0 +1,4327 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Content Standards Response",
+  "description": "Response payload with content safety policies",
+  "type": "object",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Success response - returns the content standards configuration",
+      "allOf": [
+        {
+          "title": "Content Standards",
+          "description": "A content standards configuration defining brand safety and suitability policies. Standards are scoped by brand, geography, and channel. Multiple standards can be active simultaneously for different scopes.",
+          "type": "object",
+          "properties": {
+            "standards_id": {
+              "type": "string",
+              "description": "Unique identifier for this standards configuration"
+            },
+            "name": {
+              "type": "string",
+              "description": "Human-readable name for this standards configuration"
+            },
+            "countries_all": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "minItems": 1,
+              "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic)."
+            },
+            "channels_any": {
+              "type": "array",
+              "items": {
+                "title": "Media Channel",
+                "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                "type": "string",
+                "enum": [
+                  "display",
+                  "olv",
+                  "social",
+                  "search",
+                  "ctv",
+                  "linear_tv",
+                  "radio",
+                  "streaming_audio",
+                  "podcast",
+                  "dooh",
+                  "ooh",
+                  "print",
+                  "cinema",
+                  "email",
+                  "gaming",
+                  "retail_media",
+                  "influencer",
+                  "affiliate",
+                  "product_placement",
+                  "sponsored_intelligence"
+                ],
+                "enumDescriptions": {
+                  "display": "Digital display advertising (banners, native, rich media) across web and app",
+                  "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                  "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                  "search": "Search engine advertising and search networks",
+                  "ctv": "Connected TV and streaming on television screens",
+                  "linear_tv": "Traditional broadcast and cable television",
+                  "radio": "Traditional AM/FM radio broadcast",
+                  "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                  "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                  "dooh": "Digital out-of-home screens in public spaces",
+                  "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                  "print": "Newspapers, magazines, and other print publications",
+                  "cinema": "Movie theater advertising",
+                  "email": "Email advertising and sponsored newsletter content",
+                  "gaming": "In-game advertising across platforms",
+                  "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                  "influencer": "Creator and influencer marketing partnerships",
+                  "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                  "product_placement": "Product placement, branded content, and sponsorship integrations",
+                  "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                }
+              },
+              "minItems": 1,
+              "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic)."
+            },
+            "languages_any": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "minItems": 1,
+              "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards."
+            },
+            "policies": {
+              "type": "array",
+              "description": "Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id; governance findings reference the policy_id that triggered them.",
+              "items": {
+                "title": "Policy Entry",
+                "description": "A policy \u2014 either published to the shared registry (with full regulatory metadata) or authored inline by a buyer for their own campaign (lightweight, metadata optional). Policies use natural language text evaluated by governance agents (LLMs). Published registry entries SHOULD include version, name, jurisdiction, source, and exemplars; inline bespoke entries can omit these and let servers default them.",
+                "type": "object",
+                "properties": {
+                  "policy_id": {
+                    "type": "string",
+                    "description": "Unique identifier for this policy. Registry-published ids are canonical (e.g., \"uk_hfss\", \"garm:brand_safety:violence\"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio)."
+                  },
+                  "source": {
+                    "type": "string",
+                    "enum": [
+                      "registry",
+                      "inline"
+                    ],
+                    "default": "inline",
+                    "description": "Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+                  },
+                  "version": {
+                    "type": "string",
+                    "description": "Semver version string (e.g., \"1.0.0\"). Incremented when policy content changes. Optional for inline bespoke policies \u2014 defaults to \"1.0.0\". SHOULD be provided for registry-published policies."
+                  },
+                  "name": {
+                    "type": "string",
+                    "description": "Human-readable name (e.g., \"UK HFSS Restrictions\"). Optional for inline bespoke policies \u2014 servers MAY default to policy_id."
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "Brief summary of what this policy covers."
+                  },
+                  "category": {
+                    "title": "Policy Category",
+                    "description": "The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies \u2014 defaults to \"standard\".",
+                    "type": "string",
+                    "enum": [
+                      "regulation",
+                      "standard"
+                    ],
+                    "enumDescriptions": {
+                      "regulation": "Legal requirement with jurisdiction scope. Violations have legal consequences. Enforcement is hard (must).",
+                      "standard": "Industry best practice, voluntary but recommended. Protects brand value and campaign effectiveness. Enforcement is soft (should)."
+                    }
+                  },
+                  "enforcement": {
+                    "title": "Policy Enforcement Level",
+                    "description": "How governance agents treat violations. Regulations are typically \"must\"; standards are typically \"should\".",
+                    "type": "string",
+                    "enum": [
+                      "must",
+                      "should",
+                      "may"
+                    ],
+                    "enumDescriptions": {
+                      "must": "Legal requirement. Governance agents reject actions that violate this policy.",
+                      "should": "Best practice. Governance agents warn on violations but do not block.",
+                      "may": "Recommendation. Governance agents log for informational purposes only."
+                    }
+                  },
+                  "jurisdictions": {
+                    "type": "array",
+                    "items": {
+                      "type": "string"
+                    },
+                    "description": "ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific."
+                  },
+                  "region_aliases": {
+                    "type": "object",
+                    "description": "Named groups of jurisdictions for convenience (e.g., {\"EU\": [\"AT\",\"BE\",\"BG\",...]}). Governance agents expand aliases when matching against a plan's target jurisdictions.",
+                    "additionalProperties": {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      }
+                    }
+                  },
+                  "policy_categories": {
+                    "type": "array",
+                    "items": {
+                      "type": "string"
+                    },
+                    "description": "Regulatory categories this policy belongs to (e.g., [\"children_directed\", \"age_restricted\"]). Used for automatic matching against a campaign plan's declared policy_categories. A single policy can belong to multiple categories."
+                  },
+                  "channels": {
+                    "type": "array",
+                    "items": {
+                      "title": "Media Channel",
+                      "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                      "type": "string",
+                      "enum": [
+                        "display",
+                        "olv",
+                        "social",
+                        "search",
+                        "ctv",
+                        "linear_tv",
+                        "radio",
+                        "streaming_audio",
+                        "podcast",
+                        "dooh",
+                        "ooh",
+                        "print",
+                        "cinema",
+                        "email",
+                        "gaming",
+                        "retail_media",
+                        "influencer",
+                        "affiliate",
+                        "product_placement",
+                        "sponsored_intelligence"
+                      ],
+                      "enumDescriptions": {
+                        "display": "Digital display advertising (banners, native, rich media) across web and app",
+                        "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                        "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                        "search": "Search engine advertising and search networks",
+                        "ctv": "Connected TV and streaming on television screens",
+                        "linear_tv": "Traditional broadcast and cable television",
+                        "radio": "Traditional AM/FM radio broadcast",
+                        "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                        "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                        "dooh": "Digital out-of-home screens in public spaces",
+                        "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                        "print": "Newspapers, magazines, and other print publications",
+                        "cinema": "Movie theater advertising",
+                        "email": "Email advertising and sponsored newsletter content",
+                        "gaming": "In-game advertising across platforms",
+                        "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                        "influencer": "Creator and influencer marketing partnerships",
+                        "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                        "product_placement": "Product placement, branded content, and sponsorship integrations",
+                        "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                      }
+                    },
+                    "description": "Advertising channels this policy applies to. If omitted or null, the policy applies to all channels."
+                  },
+                  "governance_domains": {
+                    "type": "array",
+                    "items": {
+                      "title": "Governance Domain",
+                      "description": "Governance sub-domains that a registry policy applies to. Used to indicate which types of governance agents can evaluate this policy.",
+                      "type": "string",
+                      "enum": [
+                        "campaign",
+                        "property",
+                        "creative",
+                        "content_standards"
+                      ]
+                    },
+                    "description": "Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains [\"creative\", \"property\"] can be declared as a feature by both creative and property governance agents."
+                  },
+                  "effective_date": {
+                    "type": "string",
+                    "format": "date",
+                    "description": "ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level."
+                  },
+                  "sunset_date": {
+                    "type": "string",
+                    "format": "date",
+                    "description": "ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration."
+                  },
+                  "source_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Link to the source regulation, standard, or legislation."
+                  },
+                  "source_name": {
+                    "type": "string",
+                    "description": "Name of the issuing body (e.g., \"UK Food Standards Agency\", \"US Federal Trade Commission\")."
+                  },
+                  "policy": {
+                    "type": "string",
+                    "description": "Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy."
+                  },
+                  "guidance": {
+                    "type": "string",
+                    "description": "Implementation notes for governance agent developers. Not used in evaluation prompts."
+                  },
+                  "exemplars": {
+                    "type": "object",
+                    "description": "Calibration examples for governance agents, following the Content Standards pattern.",
+                    "properties": {
+                      "pass": {
+                        "type": "array",
+                        "items": {
+                          "$ref": "#/$defs/exemplar"
+                        },
+                        "description": "Scenarios that comply with this policy."
+                      },
+                      "fail": {
+                        "type": "array",
+                        "items": {
+                          "$ref": "#/$defs/exemplar"
+                        },
+                        "description": "Scenarios that violate this policy."
+                      }
+                    },
+                    "additionalProperties": false
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "policy_id",
+                  "enforcement",
+                  "policy"
+                ],
+                "additionalProperties": false,
+                "$defs": {
+                  "exemplar": {
+                    "type": "object",
+                    "properties": {
+                      "scenario": {
+                        "type": "string",
+                        "description": "A concrete scenario describing an advertising action or configuration."
+                      },
+                      "explanation": {
+                        "type": "string",
+                        "description": "Why this scenario passes or fails the policy."
+                      }
+                    },
+                    "required": [
+                      "scenario",
+                      "explanation"
+                    ],
+                    "additionalProperties": false
+                  }
+                }
+              },
+              "minItems": 1
+            },
+            "calibration_exemplars": {
+              "type": "object",
+              "description": "Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.",
+              "properties": {
+                "pass": {
+                  "type": "array",
+                  "items": {
+                    "title": "Artifact",
+                    "description": "Content artifact for safety and suitability evaluation. An artifact represents content adjacent to an ad placement - a news article, podcast segment, video chapter, or social post. Artifacts are collections of assets (text, images, video, audio) plus metadata and signals.",
+                    "type": "object",
+                    "properties": {
+                      "property_rid": {
+                        "type": "string",
+                        "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                      },
+                      "artifact_id": {
+                        "type": "string",
+                        "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                      },
+                      "variant_id": {
+                        "type": "string",
+                        "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                      },
+                      "format_id": {
+                        "title": "Format ID",
+                        "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                        "type": "object",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                          },
+                          "width": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                          },
+                          "height": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                          },
+                          "duration_ms": {
+                            "type": "number",
+                            "minimum": 1,
+                            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                          }
+                        },
+                        "required": [
+                          "agent_url",
+                          "id"
+                        ],
+                        "additionalProperties": true,
+                        "dependencies": {
+                          "width": [
+                            "height"
+                          ],
+                          "height": [
+                            "width"
+                          ]
+                        }
+                      },
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                      },
+                      "published_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When the artifact was published (ISO 8601 format)"
+                      },
+                      "last_update_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When the artifact was last modified (ISO 8601 format)"
+                      },
+                      "assets": {
+                        "type": "array",
+                        "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                        "maxItems": 200,
+                        "items": {
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Text block (paragraph, heading, etc.)",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "text"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "title",
+                                    "paragraph",
+                                    "heading",
+                                    "caption",
+                                    "quote",
+                                    "list_item",
+                                    "description"
+                                  ],
+                                  "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                  "maxLength": 100000
+                                },
+                                "content_format": {
+                                  "type": "string",
+                                  "enum": [
+                                    "text/plain",
+                                    "text/markdown",
+                                    "text/html",
+                                    "application/json"
+                                  ],
+                                  "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                                  "default": "text/plain"
+                                },
+                                "language": {
+                                  "type": "string",
+                                  "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                                },
+                                "heading_level": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "maximum": 6,
+                                  "description": "Heading level (1-6), only for role=heading"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this text block, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "content"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Image asset",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "image"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Image URL"
+                                },
+                                "access": {
+                                  "$ref": "#/$defs/asset_access",
+                                  "description": "Authentication for secured URLs"
+                                },
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Alt text or image description"
+                                },
+                                "caption": {
+                                  "type": "string",
+                                  "description": "Image caption"
+                                },
+                                "width": {
+                                  "type": "integer",
+                                  "description": "Image width in pixels"
+                                },
+                                "height": {
+                                  "type": "integer",
+                                  "description": "Image height in pixels"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this image, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "url"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Video asset",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "video"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Video URL"
+                                },
+                                "access": {
+                                  "$ref": "#/$defs/asset_access",
+                                  "description": "Authentication for secured URLs"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Video duration in milliseconds"
+                                },
+                                "transcript": {
+                                  "type": "string",
+                                  "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                  "maxLength": 200000
+                                },
+                                "transcript_format": {
+                                  "type": "string",
+                                  "enum": [
+                                    "text/plain",
+                                    "text/markdown",
+                                    "application/json"
+                                  ],
+                                  "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                  "default": "text/plain"
+                                },
+                                "transcript_source": {
+                                  "type": "string",
+                                  "enum": [
+                                    "original_script",
+                                    "subtitles",
+                                    "closed_captions",
+                                    "dub",
+                                    "generated"
+                                  ],
+                                  "description": "How the transcript was generated"
+                                },
+                                "thumbnail_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Video thumbnail URL"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this video, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "url"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Audio asset",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "audio"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Audio URL"
+                                },
+                                "access": {
+                                  "$ref": "#/$defs/asset_access",
+                                  "description": "Authentication for secured URLs"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Audio duration in milliseconds"
+                                },
+                                "transcript": {
+                                  "type": "string",
+                                  "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                  "maxLength": 200000
+                                },
+                                "transcript_format": {
+                                  "type": "string",
+                                  "enum": [
+                                    "text/plain",
+                                    "text/markdown",
+                                    "application/json"
+                                  ],
+                                  "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                  "default": "text/plain"
+                                },
+                                "transcript_source": {
+                                  "type": "string",
+                                  "enum": [
+                                    "original_script",
+                                    "closed_captions",
+                                    "generated"
+                                  ],
+                                  "description": "How the transcript was generated"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this audio, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "url"
+                              ]
+                            }
+                          ]
+                        }
+                      },
+                      "metadata": {
+                        "type": "object",
+                        "description": "Rich metadata extracted from the artifact",
+                        "properties": {
+                          "canonical": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "Canonical URL"
+                          },
+                          "author": {
+                            "type": "string",
+                            "description": "Artifact author name"
+                          },
+                          "keywords": {
+                            "type": "string",
+                            "description": "Artifact keywords"
+                          },
+                          "open_graph": {
+                            "type": "object",
+                            "description": "Open Graph protocol metadata",
+                            "additionalProperties": true
+                          },
+                          "twitter_card": {
+                            "type": "object",
+                            "description": "Twitter Card metadata",
+                            "additionalProperties": true
+                          },
+                          "json_ld": {
+                            "type": "array",
+                            "description": "JSON-LD structured data (schema.org)",
+                            "items": {
+                              "type": "object"
+                            }
+                          }
+                        },
+                        "additionalProperties": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      },
+                      "identifiers": {
+                        "type": "object",
+                        "description": "Platform-specific identifiers for this artifact",
+                        "properties": {
+                          "apple_podcast_id": {
+                            "type": "string",
+                            "description": "Apple Podcasts ID"
+                          },
+                          "spotify_collection_id": {
+                            "type": "string",
+                            "description": "Spotify collection ID"
+                          },
+                          "podcast_guid": {
+                            "type": "string",
+                            "description": "Podcast GUID (from RSS feed)"
+                          },
+                          "youtube_video_id": {
+                            "type": "string",
+                            "description": "YouTube video ID"
+                          },
+                          "rss_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "RSS feed URL"
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "property_rid",
+                      "artifact_id",
+                      "assets"
+                    ],
+                    "additionalProperties": true,
+                    "$defs": {
+                      "asset_access": {
+                        "type": "object",
+                        "description": "Authentication for accessing secured asset URLs",
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "description": "Bearer token authentication",
+                            "properties": {
+                              "method": {
+                                "type": "string",
+                                "const": "bearer_token"
+                              },
+                              "token": {
+                                "type": "string",
+                                "description": "OAuth2 bearer token for Authorization header"
+                              }
+                            },
+                            "required": [
+                              "method",
+                              "token"
+                            ]
+                          },
+                          {
+                            "type": "object",
+                            "description": "Service account authentication (GCP, AWS)",
+                            "properties": {
+                              "method": {
+                                "type": "string",
+                                "const": "service_account"
+                              },
+                              "provider": {
+                                "type": "string",
+                                "enum": [
+                                  "gcp",
+                                  "aws"
+                                ],
+                                "description": "Cloud provider"
+                              },
+                              "credentials": {
+                                "type": "object",
+                                "description": "Service account credentials",
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "method",
+                              "provider"
+                            ]
+                          },
+                          {
+                            "type": "object",
+                            "description": "Pre-signed URL (credentials embedded in URL)",
+                            "properties": {
+                              "method": {
+                                "type": "string",
+                                "const": "signed_url"
+                              }
+                            },
+                            "required": [
+                              "method"
+                            ]
+                          }
+                        ]
+                      }
+                    }
+                  },
+                  "description": "Artifacts that pass the content standards"
+                },
+                "fail": {
+                  "type": "array",
+                  "items": {
+                    "title": "Artifact",
+                    "description": "Content artifact for safety and suitability evaluation. An artifact represents content adjacent to an ad placement - a news article, podcast segment, video chapter, or social post. Artifacts are collections of assets (text, images, video, audio) plus metadata and signals.",
+                    "type": "object",
+                    "properties": {
+                      "property_rid": {
+                        "type": "string",
+                        "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                      },
+                      "artifact_id": {
+                        "type": "string",
+                        "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                      },
+                      "variant_id": {
+                        "type": "string",
+                        "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                      },
+                      "format_id": {
+                        "title": "Format ID",
+                        "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                        "type": "object",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                          },
+                          "width": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                          },
+                          "height": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                          },
+                          "duration_ms": {
+                            "type": "number",
+                            "minimum": 1,
+                            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                          }
+                        },
+                        "required": [
+                          "agent_url",
+                          "id"
+                        ],
+                        "additionalProperties": true,
+                        "dependencies": {
+                          "width": [
+                            "height"
+                          ],
+                          "height": [
+                            "width"
+                          ]
+                        }
+                      },
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                      },
+                      "published_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When the artifact was published (ISO 8601 format)"
+                      },
+                      "last_update_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When the artifact was last modified (ISO 8601 format)"
+                      },
+                      "assets": {
+                        "type": "array",
+                        "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                        "maxItems": 200,
+                        "items": {
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Text block (paragraph, heading, etc.)",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "text"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "title",
+                                    "paragraph",
+                                    "heading",
+                                    "caption",
+                                    "quote",
+                                    "list_item",
+                                    "description"
+                                  ],
+                                  "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                  "maxLength": 100000
+                                },
+                                "content_format": {
+                                  "type": "string",
+                                  "enum": [
+                                    "text/plain",
+                                    "text/markdown",
+                                    "text/html",
+                                    "application/json"
+                                  ],
+                                  "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                                  "default": "text/plain"
+                                },
+                                "language": {
+                                  "type": "string",
+                                  "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                                },
+                                "heading_level": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "maximum": 6,
+                                  "description": "Heading level (1-6), only for role=heading"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this text block, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "content"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Image asset",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "image"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Image URL"
+                                },
+                                "access": {
+                                  "$ref": "#/$defs/asset_access",
+                                  "description": "Authentication for secured URLs"
+                                },
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Alt text or image description"
+                                },
+                                "caption": {
+                                  "type": "string",
+                                  "description": "Image caption"
+                                },
+                                "width": {
+                                  "type": "integer",
+                                  "description": "Image width in pixels"
+                                },
+                                "height": {
+                                  "type": "integer",
+                                  "description": "Image height in pixels"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this image, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "url"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Video asset",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "video"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Video URL"
+                                },
+                                "access": {
+                                  "$ref": "#/$defs/asset_access",
+                                  "description": "Authentication for secured URLs"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Video duration in milliseconds"
+                                },
+                                "transcript": {
+                                  "type": "string",
+                                  "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                  "maxLength": 200000
+                                },
+                                "transcript_format": {
+                                  "type": "string",
+                                  "enum": [
+                                    "text/plain",
+                                    "text/markdown",
+                                    "application/json"
+                                  ],
+                                  "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                  "default": "text/plain"
+                                },
+                                "transcript_source": {
+                                  "type": "string",
+                                  "enum": [
+                                    "original_script",
+                                    "subtitles",
+                                    "closed_captions",
+                                    "dub",
+                                    "generated"
+                                  ],
+                                  "description": "How the transcript was generated"
+                                },
+                                "thumbnail_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Video thumbnail URL"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this video, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "url"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Audio asset",
+                              "properties": {
+                                "type": {
+                                  "type": "string",
+                                  "const": "audio"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "Audio URL"
+                                },
+                                "access": {
+                                  "$ref": "#/$defs/asset_access",
+                                  "description": "Authentication for secured URLs"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Audio duration in milliseconds"
+                                },
+                                "transcript": {
+                                  "type": "string",
+                                  "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                  "maxLength": 200000
+                                },
+                                "transcript_format": {
+                                  "type": "string",
+                                  "enum": [
+                                    "text/plain",
+                                    "text/markdown",
+                                    "application/json"
+                                  ],
+                                  "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                  "default": "text/plain"
+                                },
+                                "transcript_source": {
+                                  "type": "string",
+                                  "enum": [
+                                    "original_script",
+                                    "closed_captions",
+                                    "generated"
+                                  ],
+                                  "description": "How the transcript was generated"
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance for this audio, overrides artifact-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "url"
+                              ]
+                            }
+                          ]
+                        }
+                      },
+                      "metadata": {
+                        "type": "object",
+                        "description": "Rich metadata extracted from the artifact",
+                        "properties": {
+                          "canonical": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "Canonical URL"
+                          },
+                          "author": {
+                            "type": "string",
+                            "description": "Artifact author name"
+                          },
+                          "keywords": {
+                            "type": "string",
+                            "description": "Artifact keywords"
+                          },
+                          "open_graph": {
+                            "type": "object",
+                            "description": "Open Graph protocol metadata",
+                            "additionalProperties": true
+                          },
+                          "twitter_card": {
+                            "type": "object",
+                            "description": "Twitter Card metadata",
+                            "additionalProperties": true
+                          },
+                          "json_ld": {
+                            "type": "array",
+                            "description": "JSON-LD structured data (schema.org)",
+                            "items": {
+                              "type": "object"
+                            }
+                          }
+                        },
+                        "additionalProperties": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      },
+                      "identifiers": {
+                        "type": "object",
+                        "description": "Platform-specific identifiers for this artifact",
+                        "properties": {
+                          "apple_podcast_id": {
+                            "type": "string",
+                            "description": "Apple Podcasts ID"
+                          },
+                          "spotify_collection_id": {
+                            "type": "string",
+                            "description": "Spotify collection ID"
+                          },
+                          "podcast_guid": {
+                            "type": "string",
+                            "description": "Podcast GUID (from RSS feed)"
+                          },
+                          "youtube_video_id": {
+                            "type": "string",
+                            "description": "YouTube video ID"
+                          },
+                          "rss_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "RSS feed URL"
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "property_rid",
+                      "artifact_id",
+                      "assets"
+                    ],
+                    "additionalProperties": true,
+                    "$defs": {
+                      "asset_access": {
+                        "type": "object",
+                        "description": "Authentication for accessing secured asset URLs",
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "description": "Bearer token authentication",
+                            "properties": {
+                              "method": {
+                                "type": "string",
+                                "const": "bearer_token"
+                              },
+                              "token": {
+                                "type": "string",
+                                "description": "OAuth2 bearer token for Authorization header"
+                              }
+                            },
+                            "required": [
+                              "method",
+                              "token"
+                            ]
+                          },
+                          {
+                            "type": "object",
+                            "description": "Service account authentication (GCP, AWS)",
+                            "properties": {
+                              "method": {
+                                "type": "string",
+                                "const": "service_account"
+                              },
+                              "provider": {
+                                "type": "string",
+                                "enum": [
+                                  "gcp",
+                                  "aws"
+                                ],
+                                "description": "Cloud provider"
+                              },
+                              "credentials": {
+                                "type": "object",
+                                "description": "Service account credentials",
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "method",
+                              "provider"
+                            ]
+                          },
+                          {
+                            "type": "object",
+                            "description": "Pre-signed URL (credentials embedded in URL)",
+                            "properties": {
+                              "method": {
+                                "type": "string",
+                                "const": "signed_url"
+                              }
+                            },
+                            "required": [
+                              "method"
+                            ]
+                          }
+                        ]
+                      }
+                    }
+                  },
+                  "description": "Artifacts that fail the content standards"
+                }
+              }
+            },
+            "pricing_options": {
+              "type": "array",
+              "description": "Pricing options for this content standards service. The buyer passes the selected pricing_option_id in report_usage for billing verification.",
+              "items": {
+                "title": "Vendor Pricing Option",
+                "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+                "allOf": [
+                  {
+                    "type": "object",
+                    "properties": {
+                      "pricing_option_id": {
+                        "type": "string",
+                        "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                      }
+                    },
+                    "required": [
+                      "pricing_option_id"
+                    ]
+                  },
+                  {
+                    "title": "Vendor Pricing",
+                    "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                    "type": "object",
+                    "oneOf": [
+                      {
+                        "title": "CpmPricing",
+                        "description": "Fixed cost per thousand impressions",
+                        "type": "object",
+                        "properties": {
+                          "model": {
+                            "type": "string",
+                            "const": "cpm"
+                          },
+                          "cpm": {
+                            "type": "number",
+                            "description": "Cost per thousand impressions",
+                            "minimum": 0
+                          },
+                          "currency": {
+                            "type": "string",
+                            "description": "ISO 4217 currency code",
+                            "pattern": "^[A-Z]{3}$"
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "model",
+                          "cpm",
+                          "currency"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "PercentOfMediaPricing",
+                        "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                        "type": "object",
+                        "properties": {
+                          "model": {
+                            "type": "string",
+                            "const": "percent_of_media"
+                          },
+                          "percent": {
+                            "type": "number",
+                            "description": "Percentage of media spend, e.g. 15 = 15%",
+                            "minimum": 0,
+                            "maximum": 100
+                          },
+                          "max_cpm": {
+                            "type": "number",
+                            "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                            "minimum": 0
+                          },
+                          "currency": {
+                            "type": "string",
+                            "description": "ISO 4217 currency code for the resulting charge",
+                            "pattern": "^[A-Z]{3}$"
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "model",
+                          "percent",
+                          "currency"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "FlatFeePricing",
+                        "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                        "type": "object",
+                        "properties": {
+                          "model": {
+                            "type": "string",
+                            "const": "flat_fee"
+                          },
+                          "amount": {
+                            "type": "number",
+                            "description": "Fixed charge for the billing period",
+                            "minimum": 0
+                          },
+                          "period": {
+                            "type": "string",
+                            "enum": [
+                              "monthly",
+                              "quarterly",
+                              "annual",
+                              "campaign"
+                            ],
+                            "description": "Billing period for the flat fee."
+                          },
+                          "currency": {
+                            "type": "string",
+                            "description": "ISO 4217 currency code",
+                            "pattern": "^[A-Z]{3}$"
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "model",
+                          "amount",
+                          "period",
+                          "currency"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "PerUnitPricing",
+                        "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                        "type": "object",
+                        "properties": {
+                          "model": {
+                            "type": "string",
+                            "const": "per_unit"
+                          },
+                          "unit": {
+                            "type": "string",
+                            "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                          },
+                          "unit_price": {
+                            "type": "number",
+                            "description": "Cost per one unit",
+                            "minimum": 0
+                          },
+                          "currency": {
+                            "type": "string",
+                            "description": "ISO 4217 currency code",
+                            "pattern": "^[A-Z]{3}$"
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "model",
+                          "unit",
+                          "unit_price",
+                          "currency"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  }
+                ]
+              },
+              "minItems": 1
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "standards_id"
+          ]
+        }
+      ],
+      "properties": {
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      }
+    },
+    {
+      "type": "object",
+      "description": "Error response",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ]
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.190Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/get-media-buy-artifacts-request.json b/schemas/cache/bundled/content-standards/get-media-buy-artifacts-request.json
new file mode 100644
index 000000000..ee3122e39
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/get-media-buy-artifacts-request.json
@@ -0,0 +1,189 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buy Artifacts Request",
+  "description": "Request parameters for retrieving content artifacts from a media buy for validation",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Filter artifacts to a specific account. When omitted, returns artifacts across all accessible accounts.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "Media buy to get artifacts from"
+    },
+    "package_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "description": "Filter to specific packages within the media buy"
+    },
+    "failures_only": {
+      "type": "boolean",
+      "description": "When true, only return artifacts where the seller's local model returned local_verdict: 'fail'. Useful for auditing false positives. Not useful when the seller does not run a local evaluation model (all verdicts are 'unevaluated').",
+      "default": false
+    },
+    "time_range": {
+      "type": "object",
+      "description": "Filter to specific time period",
+      "properties": {
+        "start": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Start of time range (inclusive)"
+        },
+        "end": {
+          "type": "string",
+          "format": "date-time",
+          "description": "End of time range (exclusive)"
+        }
+      }
+    },
+    "pagination": {
+      "type": "object",
+      "description": "Pagination parameters. Uses higher limits than standard pagination because artifact result sets can be very large.",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 10000,
+          "default": 1000,
+          "description": "Maximum number of artifacts to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "media_buy_id"
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.193Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/get-media-buy-artifacts-response.json b/schemas/cache/bundled/content-standards/get-media-buy-artifacts-response.json
new file mode 100644
index 000000000..2e185694c
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/get-media-buy-artifacts-response.json
@@ -0,0 +1,2061 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buy Artifacts Response",
+  "description": "Response containing content artifacts from a media buy for validation",
+  "type": "object",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Success response with artifacts",
+      "properties": {
+        "media_buy_id": {
+          "type": "string",
+          "description": "Media buy these artifacts belong to"
+        },
+        "artifacts": {
+          "type": "array",
+          "description": "Delivery records with full artifact content",
+          "items": {
+            "type": "object",
+            "properties": {
+              "record_id": {
+                "type": "string",
+                "description": "Unique identifier for this delivery record"
+              },
+              "timestamp": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When the delivery occurred"
+              },
+              "package_id": {
+                "type": "string",
+                "description": "Which package this delivery belongs to"
+              },
+              "artifact": {
+                "title": "Artifact",
+                "description": "Full artifact with content assets",
+                "type": "object",
+                "properties": {
+                  "property_rid": {
+                    "type": "string",
+                    "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                  },
+                  "artifact_id": {
+                    "type": "string",
+                    "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                  },
+                  "variant_id": {
+                    "type": "string",
+                    "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                  },
+                  "format_id": {
+                    "title": "Format ID",
+                    "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                  },
+                  "published_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was published (ISO 8601 format)"
+                  },
+                  "last_update_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was last modified (ISO 8601 format)"
+                  },
+                  "assets": {
+                    "type": "array",
+                    "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                    "maxItems": 200,
+                    "items": {
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Text block (paragraph, heading, etc.)",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "text"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "title",
+                                "paragraph",
+                                "heading",
+                                "caption",
+                                "quote",
+                                "list_item",
+                                "description"
+                              ],
+                              "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 100000
+                            },
+                            "content_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "text/html",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                            },
+                            "heading_level": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "maximum": 6,
+                              "description": "Heading level (1-6), only for role=heading"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this text block, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "content"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Image asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "image"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Image URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alt text or image description"
+                            },
+                            "caption": {
+                              "type": "string",
+                              "description": "Image caption"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "description": "Image width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "description": "Image height in pixels"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this image, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Video asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "video"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "subtitles",
+                                "closed_captions",
+                                "dub",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "thumbnail_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video thumbnail URL"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this video, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Audio asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "audio"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Audio URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "closed_captions",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this audio, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "metadata": {
+                    "type": "object",
+                    "description": "Rich metadata extracted from the artifact",
+                    "properties": {
+                      "canonical": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Canonical URL"
+                      },
+                      "author": {
+                        "type": "string",
+                        "description": "Artifact author name"
+                      },
+                      "keywords": {
+                        "type": "string",
+                        "description": "Artifact keywords"
+                      },
+                      "open_graph": {
+                        "type": "object",
+                        "description": "Open Graph protocol metadata",
+                        "additionalProperties": true
+                      },
+                      "twitter_card": {
+                        "type": "object",
+                        "description": "Twitter Card metadata",
+                        "additionalProperties": true
+                      },
+                      "json_ld": {
+                        "type": "array",
+                        "description": "JSON-LD structured data (schema.org)",
+                        "items": {
+                          "type": "object"
+                        }
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "identifiers": {
+                    "type": "object",
+                    "description": "Platform-specific identifiers for this artifact",
+                    "properties": {
+                      "apple_podcast_id": {
+                        "type": "string",
+                        "description": "Apple Podcasts ID"
+                      },
+                      "spotify_collection_id": {
+                        "type": "string",
+                        "description": "Spotify collection ID"
+                      },
+                      "podcast_guid": {
+                        "type": "string",
+                        "description": "Podcast GUID (from RSS feed)"
+                      },
+                      "youtube_video_id": {
+                        "type": "string",
+                        "description": "YouTube video ID"
+                      },
+                      "rss_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "RSS feed URL"
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "property_rid",
+                  "artifact_id",
+                  "assets"
+                ],
+                "additionalProperties": true,
+                "$defs": {
+                  "asset_access": {
+                    "type": "object",
+                    "description": "Authentication for accessing secured asset URLs",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Bearer token authentication",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "bearer_token"
+                          },
+                          "token": {
+                            "type": "string",
+                            "description": "OAuth2 bearer token for Authorization header"
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "token"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Service account authentication (GCP, AWS)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "service_account"
+                          },
+                          "provider": {
+                            "type": "string",
+                            "enum": [
+                              "gcp",
+                              "aws"
+                            ],
+                            "description": "Cloud provider"
+                          },
+                          "credentials": {
+                            "type": "object",
+                            "description": "Service account credentials",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "provider"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Pre-signed URL (credentials embedded in URL)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "signed_url"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      }
+                    ]
+                  }
+                }
+              },
+              "country": {
+                "type": "string",
+                "description": "ISO 3166-1 alpha-2 country code where delivery occurred"
+              },
+              "channel": {
+                "type": "string",
+                "description": "Channel type (e.g., display, video, audio, social)"
+              },
+              "brand_context": {
+                "type": "object",
+                "description": "Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.",
+                "properties": {
+                  "brand_id": {
+                    "type": "string",
+                    "description": "Brand identifier"
+                  },
+                  "sku_id": {
+                    "type": "string",
+                    "description": "Product/SKU identifier if applicable"
+                  }
+                }
+              },
+              "local_verdict": {
+                "type": "string",
+                "enum": [
+                  "pass",
+                  "fail",
+                  "unevaluated"
+                ],
+                "description": "Seller's local model verdict for this artifact"
+              }
+            },
+            "required": [
+              "record_id",
+              "artifact"
+            ]
+          }
+        },
+        "collection_info": {
+          "type": "object",
+          "description": "Information about artifact collection for this media buy. Sampling is configured at buy creation time \u2014 this reports what was actually collected.",
+          "properties": {
+            "total_deliveries": {
+              "type": "integer",
+              "description": "Total deliveries in the requested time range"
+            },
+            "total_collected": {
+              "type": "integer",
+              "description": "Total artifacts collected (per the buy's sampling configuration)"
+            },
+            "returned_count": {
+              "type": "integer",
+              "description": "Number of artifacts in this response (may be less than total_collected due to pagination or filters)"
+            },
+            "effective_rate": {
+              "type": "number",
+              "description": "Actual collection rate achieved (total_collected / total_deliveries)"
+            }
+          }
+        },
+        "pagination": {
+          "title": "Pagination Response",
+          "description": "Standard cursor-based pagination metadata for list responses",
+          "type": "object",
+          "properties": {
+            "has_more": {
+              "type": "boolean",
+              "description": "Whether more results are available beyond this page"
+            },
+            "cursor": {
+              "type": "string",
+              "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+            },
+            "total_count": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+            }
+          },
+          "required": [
+            "has_more"
+          ],
+          "additionalProperties": false
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "media_buy_id",
+        "artifacts"
+      ]
+    },
+    {
+      "type": "object",
+      "description": "Error response",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ]
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.196Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/list-content-standards-request.json b/schemas/cache/bundled/content-standards/list-content-standards-request.json
new file mode 100644
index 000000000..556c0db37
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/list-content-standards-request.json
@@ -0,0 +1,120 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Content Standards Request",
+  "description": "Request parameters for listing content standards configurations",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "channels": {
+      "type": "array",
+      "items": {
+        "title": "Media Channel",
+        "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+        "type": "string",
+        "enum": [
+          "display",
+          "olv",
+          "social",
+          "search",
+          "ctv",
+          "linear_tv",
+          "radio",
+          "streaming_audio",
+          "podcast",
+          "dooh",
+          "ooh",
+          "print",
+          "cinema",
+          "email",
+          "gaming",
+          "retail_media",
+          "influencer",
+          "affiliate",
+          "product_placement",
+          "sponsored_intelligence"
+        ],
+        "enumDescriptions": {
+          "display": "Digital display advertising (banners, native, rich media) across web and app",
+          "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+          "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+          "search": "Search engine advertising and search networks",
+          "ctv": "Connected TV and streaming on television screens",
+          "linear_tv": "Traditional broadcast and cable television",
+          "radio": "Traditional AM/FM radio broadcast",
+          "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+          "podcast": "Podcast advertising (host-read or dynamically inserted)",
+          "dooh": "Digital out-of-home screens in public spaces",
+          "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+          "print": "Newspapers, magazines, and other print publications",
+          "cinema": "Movie theater advertising",
+          "email": "Email advertising and sponsored newsletter content",
+          "gaming": "In-game advertising across platforms",
+          "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+          "influencer": "Creator and influencer marketing partnerships",
+          "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+          "product_placement": "Product placement, branded content, and sponsorship integrations",
+          "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+        }
+      },
+      "minItems": 1,
+      "description": "Filter by channel"
+    },
+    "languages": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "description": "Filter by BCP 47 language tags"
+    },
+    "countries": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "description": "Filter by ISO 3166-1 alpha-2 country codes"
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.197Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/list-content-standards-response.json b/schemas/cache/bundled/content-standards/list-content-standards-response.json
new file mode 100644
index 000000000..1180b41f0
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/list-content-standards-response.json
@@ -0,0 +1,4356 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Content Standards Response",
+  "description": "Response payload with list of content standards configurations",
+  "type": "object",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Success response - returns array of content standards",
+      "properties": {
+        "standards": {
+          "type": "array",
+          "items": {
+            "title": "Content Standards",
+            "description": "A content standards configuration defining brand safety and suitability policies. Standards are scoped by brand, geography, and channel. Multiple standards can be active simultaneously for different scopes.",
+            "type": "object",
+            "properties": {
+              "standards_id": {
+                "type": "string",
+                "description": "Unique identifier for this standards configuration"
+              },
+              "name": {
+                "type": "string",
+                "description": "Human-readable name for this standards configuration"
+              },
+              "countries_all": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1,
+                "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic)."
+              },
+              "channels_any": {
+                "type": "array",
+                "items": {
+                  "title": "Media Channel",
+                  "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                  "type": "string",
+                  "enum": [
+                    "display",
+                    "olv",
+                    "social",
+                    "search",
+                    "ctv",
+                    "linear_tv",
+                    "radio",
+                    "streaming_audio",
+                    "podcast",
+                    "dooh",
+                    "ooh",
+                    "print",
+                    "cinema",
+                    "email",
+                    "gaming",
+                    "retail_media",
+                    "influencer",
+                    "affiliate",
+                    "product_placement",
+                    "sponsored_intelligence"
+                  ],
+                  "enumDescriptions": {
+                    "display": "Digital display advertising (banners, native, rich media) across web and app",
+                    "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                    "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                    "search": "Search engine advertising and search networks",
+                    "ctv": "Connected TV and streaming on television screens",
+                    "linear_tv": "Traditional broadcast and cable television",
+                    "radio": "Traditional AM/FM radio broadcast",
+                    "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                    "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                    "dooh": "Digital out-of-home screens in public spaces",
+                    "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                    "print": "Newspapers, magazines, and other print publications",
+                    "cinema": "Movie theater advertising",
+                    "email": "Email advertising and sponsored newsletter content",
+                    "gaming": "In-game advertising across platforms",
+                    "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                    "influencer": "Creator and influencer marketing partnerships",
+                    "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                    "product_placement": "Product placement, branded content, and sponsorship integrations",
+                    "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                  }
+                },
+                "minItems": 1,
+                "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic)."
+              },
+              "languages_any": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1,
+                "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards."
+              },
+              "policies": {
+                "type": "array",
+                "description": "Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id; governance findings reference the policy_id that triggered them.",
+                "items": {
+                  "title": "Policy Entry",
+                  "description": "A policy \u2014 either published to the shared registry (with full regulatory metadata) or authored inline by a buyer for their own campaign (lightweight, metadata optional). Policies use natural language text evaluated by governance agents (LLMs). Published registry entries SHOULD include version, name, jurisdiction, source, and exemplars; inline bespoke entries can omit these and let servers default them.",
+                  "type": "object",
+                  "properties": {
+                    "policy_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this policy. Registry-published ids are canonical (e.g., \"uk_hfss\", \"garm:brand_safety:violence\"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio)."
+                    },
+                    "source": {
+                      "type": "string",
+                      "enum": [
+                        "registry",
+                        "inline"
+                      ],
+                      "default": "inline",
+                      "description": "Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+                    },
+                    "version": {
+                      "type": "string",
+                      "description": "Semver version string (e.g., \"1.0.0\"). Incremented when policy content changes. Optional for inline bespoke policies \u2014 defaults to \"1.0.0\". SHOULD be provided for registry-published policies."
+                    },
+                    "name": {
+                      "type": "string",
+                      "description": "Human-readable name (e.g., \"UK HFSS Restrictions\"). Optional for inline bespoke policies \u2014 servers MAY default to policy_id."
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Brief summary of what this policy covers."
+                    },
+                    "category": {
+                      "title": "Policy Category",
+                      "description": "The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies \u2014 defaults to \"standard\".",
+                      "type": "string",
+                      "enum": [
+                        "regulation",
+                        "standard"
+                      ],
+                      "enumDescriptions": {
+                        "regulation": "Legal requirement with jurisdiction scope. Violations have legal consequences. Enforcement is hard (must).",
+                        "standard": "Industry best practice, voluntary but recommended. Protects brand value and campaign effectiveness. Enforcement is soft (should)."
+                      }
+                    },
+                    "enforcement": {
+                      "title": "Policy Enforcement Level",
+                      "description": "How governance agents treat violations. Regulations are typically \"must\"; standards are typically \"should\".",
+                      "type": "string",
+                      "enum": [
+                        "must",
+                        "should",
+                        "may"
+                      ],
+                      "enumDescriptions": {
+                        "must": "Legal requirement. Governance agents reject actions that violate this policy.",
+                        "should": "Best practice. Governance agents warn on violations but do not block.",
+                        "may": "Recommendation. Governance agents log for informational purposes only."
+                      }
+                    },
+                    "jurisdictions": {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      },
+                      "description": "ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific."
+                    },
+                    "region_aliases": {
+                      "type": "object",
+                      "description": "Named groups of jurisdictions for convenience (e.g., {\"EU\": [\"AT\",\"BE\",\"BG\",...]}). Governance agents expand aliases when matching against a plan's target jurisdictions.",
+                      "additionalProperties": {
+                        "type": "array",
+                        "items": {
+                          "type": "string"
+                        }
+                      }
+                    },
+                    "policy_categories": {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      },
+                      "description": "Regulatory categories this policy belongs to (e.g., [\"children_directed\", \"age_restricted\"]). Used for automatic matching against a campaign plan's declared policy_categories. A single policy can belong to multiple categories."
+                    },
+                    "channels": {
+                      "type": "array",
+                      "items": {
+                        "title": "Media Channel",
+                        "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                        "type": "string",
+                        "enum": [
+                          "display",
+                          "olv",
+                          "social",
+                          "search",
+                          "ctv",
+                          "linear_tv",
+                          "radio",
+                          "streaming_audio",
+                          "podcast",
+                          "dooh",
+                          "ooh",
+                          "print",
+                          "cinema",
+                          "email",
+                          "gaming",
+                          "retail_media",
+                          "influencer",
+                          "affiliate",
+                          "product_placement",
+                          "sponsored_intelligence"
+                        ],
+                        "enumDescriptions": {
+                          "display": "Digital display advertising (banners, native, rich media) across web and app",
+                          "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                          "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                          "search": "Search engine advertising and search networks",
+                          "ctv": "Connected TV and streaming on television screens",
+                          "linear_tv": "Traditional broadcast and cable television",
+                          "radio": "Traditional AM/FM radio broadcast",
+                          "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                          "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                          "dooh": "Digital out-of-home screens in public spaces",
+                          "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                          "print": "Newspapers, magazines, and other print publications",
+                          "cinema": "Movie theater advertising",
+                          "email": "Email advertising and sponsored newsletter content",
+                          "gaming": "In-game advertising across platforms",
+                          "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                          "influencer": "Creator and influencer marketing partnerships",
+                          "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                          "product_placement": "Product placement, branded content, and sponsorship integrations",
+                          "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                        }
+                      },
+                      "description": "Advertising channels this policy applies to. If omitted or null, the policy applies to all channels."
+                    },
+                    "governance_domains": {
+                      "type": "array",
+                      "items": {
+                        "title": "Governance Domain",
+                        "description": "Governance sub-domains that a registry policy applies to. Used to indicate which types of governance agents can evaluate this policy.",
+                        "type": "string",
+                        "enum": [
+                          "campaign",
+                          "property",
+                          "creative",
+                          "content_standards"
+                        ]
+                      },
+                      "description": "Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains [\"creative\", \"property\"] can be declared as a feature by both creative and property governance agents."
+                    },
+                    "effective_date": {
+                      "type": "string",
+                      "format": "date",
+                      "description": "ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level."
+                    },
+                    "sunset_date": {
+                      "type": "string",
+                      "format": "date",
+                      "description": "ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration."
+                    },
+                    "source_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "Link to the source regulation, standard, or legislation."
+                    },
+                    "source_name": {
+                      "type": "string",
+                      "description": "Name of the issuing body (e.g., \"UK Food Standards Agency\", \"US Federal Trade Commission\")."
+                    },
+                    "policy": {
+                      "type": "string",
+                      "description": "Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy."
+                    },
+                    "guidance": {
+                      "type": "string",
+                      "description": "Implementation notes for governance agent developers. Not used in evaluation prompts."
+                    },
+                    "exemplars": {
+                      "type": "object",
+                      "description": "Calibration examples for governance agents, following the Content Standards pattern.",
+                      "properties": {
+                        "pass": {
+                          "type": "array",
+                          "items": {
+                            "$ref": "#/$defs/exemplar"
+                          },
+                          "description": "Scenarios that comply with this policy."
+                        },
+                        "fail": {
+                          "type": "array",
+                          "items": {
+                            "$ref": "#/$defs/exemplar"
+                          },
+                          "description": "Scenarios that violate this policy."
+                        }
+                      },
+                      "additionalProperties": false
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "policy_id",
+                    "enforcement",
+                    "policy"
+                  ],
+                  "additionalProperties": false,
+                  "$defs": {
+                    "exemplar": {
+                      "type": "object",
+                      "properties": {
+                        "scenario": {
+                          "type": "string",
+                          "description": "A concrete scenario describing an advertising action or configuration."
+                        },
+                        "explanation": {
+                          "type": "string",
+                          "description": "Why this scenario passes or fails the policy."
+                        }
+                      },
+                      "required": [
+                        "scenario",
+                        "explanation"
+                      ],
+                      "additionalProperties": false
+                    }
+                  }
+                },
+                "minItems": 1
+              },
+              "calibration_exemplars": {
+                "type": "object",
+                "description": "Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.",
+                "properties": {
+                  "pass": {
+                    "type": "array",
+                    "items": {
+                      "title": "Artifact",
+                      "description": "Content artifact for safety and suitability evaluation. An artifact represents content adjacent to an ad placement - a news article, podcast segment, video chapter, or social post. Artifacts are collections of assets (text, images, video, audio) plus metadata and signals.",
+                      "type": "object",
+                      "properties": {
+                        "property_rid": {
+                          "type": "string",
+                          "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                        },
+                        "artifact_id": {
+                          "type": "string",
+                          "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                        },
+                        "variant_id": {
+                          "type": "string",
+                          "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                        },
+                        "format_id": {
+                          "title": "Format ID",
+                          "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                          "type": "object",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                            },
+                            "id": {
+                              "type": "string",
+                              "pattern": "^[a-zA-Z0-9_-]+$",
+                              "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                            },
+                            "duration_ms": {
+                              "type": "number",
+                              "minimum": 1,
+                              "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                            }
+                          },
+                          "required": [
+                            "agent_url",
+                            "id"
+                          ],
+                          "additionalProperties": true,
+                          "dependencies": {
+                            "width": [
+                              "height"
+                            ],
+                            "height": [
+                              "width"
+                            ]
+                          }
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                        },
+                        "published_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When the artifact was published (ISO 8601 format)"
+                        },
+                        "last_update_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When the artifact was last modified (ISO 8601 format)"
+                        },
+                        "assets": {
+                          "type": "array",
+                          "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                          "maxItems": 200,
+                          "items": {
+                            "oneOf": [
+                              {
+                                "type": "object",
+                                "description": "Text block (paragraph, heading, etc.)",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "text"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "title",
+                                      "paragraph",
+                                      "heading",
+                                      "caption",
+                                      "quote",
+                                      "list_item",
+                                      "description"
+                                    ],
+                                    "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                                  },
+                                  "content": {
+                                    "type": "string",
+                                    "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                    "maxLength": 100000
+                                  },
+                                  "content_format": {
+                                    "type": "string",
+                                    "enum": [
+                                      "text/plain",
+                                      "text/markdown",
+                                      "text/html",
+                                      "application/json"
+                                    ],
+                                    "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                                    "default": "text/plain"
+                                  },
+                                  "language": {
+                                    "type": "string",
+                                    "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                                  },
+                                  "heading_level": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "maximum": 6,
+                                    "description": "Heading level (1-6), only for role=heading"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this text block, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "content"
+                                ]
+                              },
+                              {
+                                "type": "object",
+                                "description": "Image asset",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "image"
+                                  },
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Image URL"
+                                  },
+                                  "access": {
+                                    "$ref": "#/$defs/asset_access",
+                                    "description": "Authentication for secured URLs"
+                                  },
+                                  "alt_text": {
+                                    "type": "string",
+                                    "description": "Alt text or image description"
+                                  },
+                                  "caption": {
+                                    "type": "string",
+                                    "description": "Image caption"
+                                  },
+                                  "width": {
+                                    "type": "integer",
+                                    "description": "Image width in pixels"
+                                  },
+                                  "height": {
+                                    "type": "integer",
+                                    "description": "Image height in pixels"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this image, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "url"
+                                ]
+                              },
+                              {
+                                "type": "object",
+                                "description": "Video asset",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "video"
+                                  },
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Video URL"
+                                  },
+                                  "access": {
+                                    "$ref": "#/$defs/asset_access",
+                                    "description": "Authentication for secured URLs"
+                                  },
+                                  "duration_ms": {
+                                    "type": "integer",
+                                    "description": "Video duration in milliseconds"
+                                  },
+                                  "transcript": {
+                                    "type": "string",
+                                    "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                    "maxLength": 200000
+                                  },
+                                  "transcript_format": {
+                                    "type": "string",
+                                    "enum": [
+                                      "text/plain",
+                                      "text/markdown",
+                                      "application/json"
+                                    ],
+                                    "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                    "default": "text/plain"
+                                  },
+                                  "transcript_source": {
+                                    "type": "string",
+                                    "enum": [
+                                      "original_script",
+                                      "subtitles",
+                                      "closed_captions",
+                                      "dub",
+                                      "generated"
+                                    ],
+                                    "description": "How the transcript was generated"
+                                  },
+                                  "thumbnail_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Video thumbnail URL"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this video, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "url"
+                                ]
+                              },
+                              {
+                                "type": "object",
+                                "description": "Audio asset",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "audio"
+                                  },
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Audio URL"
+                                  },
+                                  "access": {
+                                    "$ref": "#/$defs/asset_access",
+                                    "description": "Authentication for secured URLs"
+                                  },
+                                  "duration_ms": {
+                                    "type": "integer",
+                                    "description": "Audio duration in milliseconds"
+                                  },
+                                  "transcript": {
+                                    "type": "string",
+                                    "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                    "maxLength": 200000
+                                  },
+                                  "transcript_format": {
+                                    "type": "string",
+                                    "enum": [
+                                      "text/plain",
+                                      "text/markdown",
+                                      "application/json"
+                                    ],
+                                    "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                    "default": "text/plain"
+                                  },
+                                  "transcript_source": {
+                                    "type": "string",
+                                    "enum": [
+                                      "original_script",
+                                      "closed_captions",
+                                      "generated"
+                                    ],
+                                    "description": "How the transcript was generated"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this audio, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "url"
+                                ]
+                              }
+                            ]
+                          }
+                        },
+                        "metadata": {
+                          "type": "object",
+                          "description": "Rich metadata extracted from the artifact",
+                          "properties": {
+                            "canonical": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Canonical URL"
+                            },
+                            "author": {
+                              "type": "string",
+                              "description": "Artifact author name"
+                            },
+                            "keywords": {
+                              "type": "string",
+                              "description": "Artifact keywords"
+                            },
+                            "open_graph": {
+                              "type": "object",
+                              "description": "Open Graph protocol metadata",
+                              "additionalProperties": true
+                            },
+                            "twitter_card": {
+                              "type": "object",
+                              "description": "Twitter Card metadata",
+                              "additionalProperties": true
+                            },
+                            "json_ld": {
+                              "type": "array",
+                              "description": "JSON-LD structured data (schema.org)",
+                              "items": {
+                                "type": "object"
+                              }
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "identifiers": {
+                          "type": "object",
+                          "description": "Platform-specific identifiers for this artifact",
+                          "properties": {
+                            "apple_podcast_id": {
+                              "type": "string",
+                              "description": "Apple Podcasts ID"
+                            },
+                            "spotify_collection_id": {
+                              "type": "string",
+                              "description": "Spotify collection ID"
+                            },
+                            "podcast_guid": {
+                              "type": "string",
+                              "description": "Podcast GUID (from RSS feed)"
+                            },
+                            "youtube_video_id": {
+                              "type": "string",
+                              "description": "YouTube video ID"
+                            },
+                            "rss_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "RSS feed URL"
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "property_rid",
+                        "artifact_id",
+                        "assets"
+                      ],
+                      "additionalProperties": true,
+                      "$defs": {
+                        "asset_access": {
+                          "type": "object",
+                          "description": "Authentication for accessing secured asset URLs",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Bearer token authentication",
+                              "properties": {
+                                "method": {
+                                  "type": "string",
+                                  "const": "bearer_token"
+                                },
+                                "token": {
+                                  "type": "string",
+                                  "description": "OAuth2 bearer token for Authorization header"
+                                }
+                              },
+                              "required": [
+                                "method",
+                                "token"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Service account authentication (GCP, AWS)",
+                              "properties": {
+                                "method": {
+                                  "type": "string",
+                                  "const": "service_account"
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "enum": [
+                                    "gcp",
+                                    "aws"
+                                  ],
+                                  "description": "Cloud provider"
+                                },
+                                "credentials": {
+                                  "type": "object",
+                                  "description": "Service account credentials",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "method",
+                                "provider"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Pre-signed URL (credentials embedded in URL)",
+                              "properties": {
+                                "method": {
+                                  "type": "string",
+                                  "const": "signed_url"
+                                }
+                              },
+                              "required": [
+                                "method"
+                              ]
+                            }
+                          ]
+                        }
+                      }
+                    },
+                    "description": "Artifacts that pass the content standards"
+                  },
+                  "fail": {
+                    "type": "array",
+                    "items": {
+                      "title": "Artifact",
+                      "description": "Content artifact for safety and suitability evaluation. An artifact represents content adjacent to an ad placement - a news article, podcast segment, video chapter, or social post. Artifacts are collections of assets (text, images, video, audio) plus metadata and signals.",
+                      "type": "object",
+                      "properties": {
+                        "property_rid": {
+                          "type": "string",
+                          "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                        },
+                        "artifact_id": {
+                          "type": "string",
+                          "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                        },
+                        "variant_id": {
+                          "type": "string",
+                          "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                        },
+                        "format_id": {
+                          "title": "Format ID",
+                          "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                          "type": "object",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                            },
+                            "id": {
+                              "type": "string",
+                              "pattern": "^[a-zA-Z0-9_-]+$",
+                              "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                            },
+                            "duration_ms": {
+                              "type": "number",
+                              "minimum": 1,
+                              "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                            }
+                          },
+                          "required": [
+                            "agent_url",
+                            "id"
+                          ],
+                          "additionalProperties": true,
+                          "dependencies": {
+                            "width": [
+                              "height"
+                            ],
+                            "height": [
+                              "width"
+                            ]
+                          }
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                        },
+                        "published_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When the artifact was published (ISO 8601 format)"
+                        },
+                        "last_update_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When the artifact was last modified (ISO 8601 format)"
+                        },
+                        "assets": {
+                          "type": "array",
+                          "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                          "maxItems": 200,
+                          "items": {
+                            "oneOf": [
+                              {
+                                "type": "object",
+                                "description": "Text block (paragraph, heading, etc.)",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "text"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "title",
+                                      "paragraph",
+                                      "heading",
+                                      "caption",
+                                      "quote",
+                                      "list_item",
+                                      "description"
+                                    ],
+                                    "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                                  },
+                                  "content": {
+                                    "type": "string",
+                                    "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                    "maxLength": 100000
+                                  },
+                                  "content_format": {
+                                    "type": "string",
+                                    "enum": [
+                                      "text/plain",
+                                      "text/markdown",
+                                      "text/html",
+                                      "application/json"
+                                    ],
+                                    "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                                    "default": "text/plain"
+                                  },
+                                  "language": {
+                                    "type": "string",
+                                    "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                                  },
+                                  "heading_level": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "maximum": 6,
+                                    "description": "Heading level (1-6), only for role=heading"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this text block, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "content"
+                                ]
+                              },
+                              {
+                                "type": "object",
+                                "description": "Image asset",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "image"
+                                  },
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Image URL"
+                                  },
+                                  "access": {
+                                    "$ref": "#/$defs/asset_access",
+                                    "description": "Authentication for secured URLs"
+                                  },
+                                  "alt_text": {
+                                    "type": "string",
+                                    "description": "Alt text or image description"
+                                  },
+                                  "caption": {
+                                    "type": "string",
+                                    "description": "Image caption"
+                                  },
+                                  "width": {
+                                    "type": "integer",
+                                    "description": "Image width in pixels"
+                                  },
+                                  "height": {
+                                    "type": "integer",
+                                    "description": "Image height in pixels"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this image, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "url"
+                                ]
+                              },
+                              {
+                                "type": "object",
+                                "description": "Video asset",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "video"
+                                  },
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Video URL"
+                                  },
+                                  "access": {
+                                    "$ref": "#/$defs/asset_access",
+                                    "description": "Authentication for secured URLs"
+                                  },
+                                  "duration_ms": {
+                                    "type": "integer",
+                                    "description": "Video duration in milliseconds"
+                                  },
+                                  "transcript": {
+                                    "type": "string",
+                                    "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                    "maxLength": 200000
+                                  },
+                                  "transcript_format": {
+                                    "type": "string",
+                                    "enum": [
+                                      "text/plain",
+                                      "text/markdown",
+                                      "application/json"
+                                    ],
+                                    "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                    "default": "text/plain"
+                                  },
+                                  "transcript_source": {
+                                    "type": "string",
+                                    "enum": [
+                                      "original_script",
+                                      "subtitles",
+                                      "closed_captions",
+                                      "dub",
+                                      "generated"
+                                    ],
+                                    "description": "How the transcript was generated"
+                                  },
+                                  "thumbnail_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Video thumbnail URL"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this video, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "url"
+                                ]
+                              },
+                              {
+                                "type": "object",
+                                "description": "Audio asset",
+                                "properties": {
+                                  "type": {
+                                    "type": "string",
+                                    "const": "audio"
+                                  },
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "Audio URL"
+                                  },
+                                  "access": {
+                                    "$ref": "#/$defs/asset_access",
+                                    "description": "Authentication for secured URLs"
+                                  },
+                                  "duration_ms": {
+                                    "type": "integer",
+                                    "description": "Audio duration in milliseconds"
+                                  },
+                                  "transcript": {
+                                    "type": "string",
+                                    "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                                    "maxLength": 200000
+                                  },
+                                  "transcript_format": {
+                                    "type": "string",
+                                    "enum": [
+                                      "text/plain",
+                                      "text/markdown",
+                                      "application/json"
+                                    ],
+                                    "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                                    "default": "text/plain"
+                                  },
+                                  "transcript_source": {
+                                    "type": "string",
+                                    "enum": [
+                                      "original_script",
+                                      "closed_captions",
+                                      "generated"
+                                    ],
+                                    "description": "How the transcript was generated"
+                                  },
+                                  "provenance": {
+                                    "title": "Provenance",
+                                    "description": "Provenance for this audio, overrides artifact-level provenance",
+                                    "type": "object",
+                                    "properties": {
+                                      "digital_source_type": {
+                                        "title": "Digital Source Type",
+                                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                        "type": "string",
+                                        "enum": [
+                                          "digital_capture",
+                                          "digital_creation",
+                                          "trained_algorithmic_media",
+                                          "composite_with_trained_algorithmic_media",
+                                          "algorithmic_media",
+                                          "composite_capture",
+                                          "composite_synthetic",
+                                          "human_edits",
+                                          "data_driven_media"
+                                        ],
+                                        "enumDescriptions": {
+                                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                          "composite_capture": "Multiple digital captures composited together without AI",
+                                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                        }
+                                      },
+                                      "ai_tool": {
+                                        "type": "object",
+                                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                        "properties": {
+                                          "name": {
+                                            "type": "string",
+                                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                          },
+                                          "version": {
+                                            "type": "string",
+                                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                          },
+                                          "provider": {
+                                            "type": "string",
+                                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                          }
+                                        },
+                                        "required": [
+                                          "name"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "human_oversight": {
+                                        "type": "string",
+                                        "description": "Level of human involvement in the AI-assisted creation process",
+                                        "enum": [
+                                          "none",
+                                          "prompt_only",
+                                          "selected",
+                                          "edited",
+                                          "directed"
+                                        ],
+                                        "enumDescriptions": {
+                                          "none": "Fully automated with no human involvement in generation",
+                                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                          "selected": "Human selected from multiple AI-generated candidates",
+                                          "edited": "Human edited or refined AI-generated output",
+                                          "directed": "Human directed the creative process with AI as an assistive tool"
+                                        }
+                                      },
+                                      "declared_by": {
+                                        "type": "object",
+                                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                        "properties": {
+                                          "agent_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL of the agent or service that declared this provenance"
+                                          },
+                                          "role": {
+                                            "type": "string",
+                                            "enum": [
+                                              "creator",
+                                              "advertiser",
+                                              "agency",
+                                              "platform",
+                                              "tool"
+                                            ],
+                                            "description": "Role of the declaring party in the supply chain",
+                                            "enumDescriptions": {
+                                              "creator": "The party that created or generated the content",
+                                              "advertiser": "The brand or advertiser that owns the content",
+                                              "agency": "Agency acting on behalf of the advertiser",
+                                              "platform": "Ad platform or publisher that processed the content",
+                                              "tool": "Automated tool or service that attached provenance metadata"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "role"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "declared_at": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                      },
+                                      "created_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When this content was created or generated (ISO 8601)"
+                                      },
+                                      "c2pa": {
+                                        "type": "object",
+                                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                        "properties": {
+                                          "manifest_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the C2PA manifest store for this content"
+                                          }
+                                        },
+                                        "required": [
+                                          "manifest_url"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "disclosure": {
+                                        "type": "object",
+                                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                        "properties": {
+                                          "required": {
+                                            "type": "boolean",
+                                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where disclosure obligations apply",
+                                            "items": {
+                                              "type": "object",
+                                              "properties": {
+                                                "country": {
+                                                  "type": "string",
+                                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                },
+                                                "region": {
+                                                  "type": "string",
+                                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                },
+                                                "regulation": {
+                                                  "type": "string",
+                                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                },
+                                                "label_text": {
+                                                  "type": "string",
+                                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                },
+                                                "render_guidance": {
+                                                  "type": "object",
+                                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                  "minProperties": 1,
+                                                  "properties": {
+                                                    "persistence": {
+                                                      "title": "Disclosure Persistence",
+                                                      "description": "How long the disclosure must persist during content playback or display",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "continuous",
+                                                        "initial",
+                                                        "flexible"
+                                                      ],
+                                                      "enumDescriptions": {
+                                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                      }
+                                                    },
+                                                    "min_duration_ms": {
+                                                      "type": "integer",
+                                                      "minimum": 1,
+                                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                    },
+                                                    "positions": {
+                                                      "type": "array",
+                                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                      "items": {
+                                                        "title": "Disclosure Position",
+                                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "prominent",
+                                                          "footer",
+                                                          "audio",
+                                                          "subtitle",
+                                                          "overlay",
+                                                          "end_card",
+                                                          "pre_roll",
+                                                          "companion"
+                                                        ]
+                                                      },
+                                                      "minItems": 1,
+                                                      "uniqueItems": true
+                                                    },
+                                                    "ext": {
+                                                      "title": "Extension Object",
+                                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                      "type": "object",
+                                                      "additionalProperties": true
+                                                    }
+                                                  },
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "required": [
+                                                "country",
+                                                "regulation"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "minItems": 1
+                                          }
+                                        },
+                                        "required": [
+                                          "required"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "verification": {
+                                        "type": "array",
+                                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                        "minItems": 1,
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "verified_by": {
+                                              "type": "string",
+                                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                            },
+                                            "verified_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When the verification was performed (ISO 8601)"
+                                            },
+                                            "result": {
+                                              "type": "string",
+                                              "enum": [
+                                                "authentic",
+                                                "ai_generated",
+                                                "ai_modified",
+                                                "inconclusive"
+                                              ],
+                                              "description": "Verification outcome"
+                                            },
+                                            "confidence": {
+                                              "type": "number",
+                                              "minimum": 0,
+                                              "maximum": 1,
+                                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                            },
+                                            "details_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the full verification report"
+                                            }
+                                          },
+                                          "required": [
+                                            "verified_by",
+                                            "result"
+                                          ],
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "type",
+                                  "url"
+                                ]
+                              }
+                            ]
+                          }
+                        },
+                        "metadata": {
+                          "type": "object",
+                          "description": "Rich metadata extracted from the artifact",
+                          "properties": {
+                            "canonical": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Canonical URL"
+                            },
+                            "author": {
+                              "type": "string",
+                              "description": "Artifact author name"
+                            },
+                            "keywords": {
+                              "type": "string",
+                              "description": "Artifact keywords"
+                            },
+                            "open_graph": {
+                              "type": "object",
+                              "description": "Open Graph protocol metadata",
+                              "additionalProperties": true
+                            },
+                            "twitter_card": {
+                              "type": "object",
+                              "description": "Twitter Card metadata",
+                              "additionalProperties": true
+                            },
+                            "json_ld": {
+                              "type": "array",
+                              "description": "JSON-LD structured data (schema.org)",
+                              "items": {
+                                "type": "object"
+                              }
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "identifiers": {
+                          "type": "object",
+                          "description": "Platform-specific identifiers for this artifact",
+                          "properties": {
+                            "apple_podcast_id": {
+                              "type": "string",
+                              "description": "Apple Podcasts ID"
+                            },
+                            "spotify_collection_id": {
+                              "type": "string",
+                              "description": "Spotify collection ID"
+                            },
+                            "podcast_guid": {
+                              "type": "string",
+                              "description": "Podcast GUID (from RSS feed)"
+                            },
+                            "youtube_video_id": {
+                              "type": "string",
+                              "description": "YouTube video ID"
+                            },
+                            "rss_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "RSS feed URL"
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "property_rid",
+                        "artifact_id",
+                        "assets"
+                      ],
+                      "additionalProperties": true,
+                      "$defs": {
+                        "asset_access": {
+                          "type": "object",
+                          "description": "Authentication for accessing secured asset URLs",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Bearer token authentication",
+                              "properties": {
+                                "method": {
+                                  "type": "string",
+                                  "const": "bearer_token"
+                                },
+                                "token": {
+                                  "type": "string",
+                                  "description": "OAuth2 bearer token for Authorization header"
+                                }
+                              },
+                              "required": [
+                                "method",
+                                "token"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Service account authentication (GCP, AWS)",
+                              "properties": {
+                                "method": {
+                                  "type": "string",
+                                  "const": "service_account"
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "enum": [
+                                    "gcp",
+                                    "aws"
+                                  ],
+                                  "description": "Cloud provider"
+                                },
+                                "credentials": {
+                                  "type": "object",
+                                  "description": "Service account credentials",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "method",
+                                "provider"
+                              ]
+                            },
+                            {
+                              "type": "object",
+                              "description": "Pre-signed URL (credentials embedded in URL)",
+                              "properties": {
+                                "method": {
+                                  "type": "string",
+                                  "const": "signed_url"
+                                }
+                              },
+                              "required": [
+                                "method"
+                              ]
+                            }
+                          ]
+                        }
+                      }
+                    },
+                    "description": "Artifacts that fail the content standards"
+                  }
+                }
+              },
+              "pricing_options": {
+                "type": "array",
+                "description": "Pricing options for this content standards service. The buyer passes the selected pricing_option_id in report_usage for billing verification.",
+                "items": {
+                  "title": "Vendor Pricing Option",
+                  "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+                  "allOf": [
+                    {
+                      "type": "object",
+                      "properties": {
+                        "pricing_option_id": {
+                          "type": "string",
+                          "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                        }
+                      },
+                      "required": [
+                        "pricing_option_id"
+                      ]
+                    },
+                    {
+                      "title": "Vendor Pricing",
+                      "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                      "type": "object",
+                      "oneOf": [
+                        {
+                          "title": "CpmPricing",
+                          "description": "Fixed cost per thousand impressions",
+                          "type": "object",
+                          "properties": {
+                            "model": {
+                              "type": "string",
+                              "const": "cpm"
+                            },
+                            "cpm": {
+                              "type": "number",
+                              "description": "Cost per thousand impressions",
+                              "minimum": 0
+                            },
+                            "currency": {
+                              "type": "string",
+                              "description": "ISO 4217 currency code",
+                              "pattern": "^[A-Z]{3}$"
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "model",
+                            "cpm",
+                            "currency"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "PercentOfMediaPricing",
+                          "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                          "type": "object",
+                          "properties": {
+                            "model": {
+                              "type": "string",
+                              "const": "percent_of_media"
+                            },
+                            "percent": {
+                              "type": "number",
+                              "description": "Percentage of media spend, e.g. 15 = 15%",
+                              "minimum": 0,
+                              "maximum": 100
+                            },
+                            "max_cpm": {
+                              "type": "number",
+                              "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                              "minimum": 0
+                            },
+                            "currency": {
+                              "type": "string",
+                              "description": "ISO 4217 currency code for the resulting charge",
+                              "pattern": "^[A-Z]{3}$"
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "model",
+                            "percent",
+                            "currency"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "FlatFeePricing",
+                          "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                          "type": "object",
+                          "properties": {
+                            "model": {
+                              "type": "string",
+                              "const": "flat_fee"
+                            },
+                            "amount": {
+                              "type": "number",
+                              "description": "Fixed charge for the billing period",
+                              "minimum": 0
+                            },
+                            "period": {
+                              "type": "string",
+                              "enum": [
+                                "monthly",
+                                "quarterly",
+                                "annual",
+                                "campaign"
+                              ],
+                              "description": "Billing period for the flat fee."
+                            },
+                            "currency": {
+                              "type": "string",
+                              "description": "ISO 4217 currency code",
+                              "pattern": "^[A-Z]{3}$"
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "model",
+                            "amount",
+                            "period",
+                            "currency"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "PerUnitPricing",
+                          "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                          "type": "object",
+                          "properties": {
+                            "model": {
+                              "type": "string",
+                              "const": "per_unit"
+                            },
+                            "unit": {
+                              "type": "string",
+                              "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                            },
+                            "unit_price": {
+                              "type": "number",
+                              "description": "Cost per one unit",
+                              "minimum": 0
+                            },
+                            "currency": {
+                              "type": "string",
+                              "description": "ISO 4217 currency code",
+                              "pattern": "^[A-Z]{3}$"
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "model",
+                            "unit",
+                            "unit_price",
+                            "currency"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    }
+                  ]
+                },
+                "minItems": 1
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "standards_id"
+            ]
+          },
+          "description": "Array of content standards configurations matching the filter criteria"
+        },
+        "pagination": {
+          "title": "Pagination Response",
+          "description": "Standard cursor-based pagination metadata for list responses",
+          "type": "object",
+          "properties": {
+            "has_more": {
+              "type": "boolean",
+              "description": "Whether more results are available beyond this page"
+            },
+            "cursor": {
+              "type": "string",
+              "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+            },
+            "total_count": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+            }
+          },
+          "required": [
+            "has_more"
+          ],
+          "additionalProperties": false
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "standards"
+      ]
+    },
+    {
+      "type": "object",
+      "description": "Error response",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ]
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.202Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/update-content-standards-request.json b/schemas/cache/bundled/content-standards/update-content-standards-request.json
new file mode 100644
index 000000000..db93feb59
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/update-content-standards-request.json
@@ -0,0 +1,4132 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Content Standards Request",
+  "description": "Request parameters for updating an existing content standards configuration. Creates a new version.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "standards_id": {
+      "type": "string",
+      "description": "ID of the standards configuration to update"
+    },
+    "scope": {
+      "type": "object",
+      "description": "Updated scope for where this standards configuration applies",
+      "properties": {
+        "countries_all": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic)."
+        },
+        "channels_any": {
+          "type": "array",
+          "items": {
+            "title": "Media Channel",
+            "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+            "type": "string",
+            "enum": [
+              "display",
+              "olv",
+              "social",
+              "search",
+              "ctv",
+              "linear_tv",
+              "radio",
+              "streaming_audio",
+              "podcast",
+              "dooh",
+              "ooh",
+              "print",
+              "cinema",
+              "email",
+              "gaming",
+              "retail_media",
+              "influencer",
+              "affiliate",
+              "product_placement",
+              "sponsored_intelligence"
+            ],
+            "enumDescriptions": {
+              "display": "Digital display advertising (banners, native, rich media) across web and app",
+              "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+              "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+              "search": "Search engine advertising and search networks",
+              "ctv": "Connected TV and streaming on television screens",
+              "linear_tv": "Traditional broadcast and cable television",
+              "radio": "Traditional AM/FM radio broadcast",
+              "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+              "podcast": "Podcast advertising (host-read or dynamically inserted)",
+              "dooh": "Digital out-of-home screens in public spaces",
+              "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+              "print": "Newspapers, magazines, and other print publications",
+              "cinema": "Movie theater advertising",
+              "email": "Email advertising and sponsored newsletter content",
+              "gaming": "In-game advertising across platforms",
+              "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+              "influencer": "Creator and influencer marketing partnerships",
+              "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+              "product_placement": "Product placement, branded content, and sponsorship integrations",
+              "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+            }
+          },
+          "minItems": 1,
+          "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic)."
+        },
+        "languages_any": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards."
+        },
+        "description": {
+          "type": "string",
+          "description": "Human-readable description of this scope"
+        }
+      }
+    },
+    "registry_policy_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Registry policy IDs to use as the evaluation basis. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria."
+    },
+    "policies": {
+      "type": "array",
+      "description": "Updated bespoke policies for this content-standards configuration, using the same shape as registry entries. Replaces the existing policies array; use stable policy_ids to track policies across versions. Combines with registry_policy_ids. Bespoke policy_ids MUST be flat (no colons/slashes).",
+      "items": {
+        "title": "Policy Entry",
+        "description": "A policy \u2014 either published to the shared registry (with full regulatory metadata) or authored inline by a buyer for their own campaign (lightweight, metadata optional). Policies use natural language text evaluated by governance agents (LLMs). Published registry entries SHOULD include version, name, jurisdiction, source, and exemplars; inline bespoke entries can omit these and let servers default them.",
+        "type": "object",
+        "properties": {
+          "policy_id": {
+            "type": "string",
+            "description": "Unique identifier for this policy. Registry-published ids are canonical (e.g., \"uk_hfss\", \"garm:brand_safety:violence\"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio)."
+          },
+          "source": {
+            "type": "string",
+            "enum": [
+              "registry",
+              "inline"
+            ],
+            "default": "inline",
+            "description": "Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+          },
+          "version": {
+            "type": "string",
+            "description": "Semver version string (e.g., \"1.0.0\"). Incremented when policy content changes. Optional for inline bespoke policies \u2014 defaults to \"1.0.0\". SHOULD be provided for registry-published policies."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name (e.g., \"UK HFSS Restrictions\"). Optional for inline bespoke policies \u2014 servers MAY default to policy_id."
+          },
+          "description": {
+            "type": "string",
+            "description": "Brief summary of what this policy covers."
+          },
+          "category": {
+            "title": "Policy Category",
+            "description": "The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies \u2014 defaults to \"standard\".",
+            "type": "string",
+            "enum": [
+              "regulation",
+              "standard"
+            ],
+            "enumDescriptions": {
+              "regulation": "Legal requirement with jurisdiction scope. Violations have legal consequences. Enforcement is hard (must).",
+              "standard": "Industry best practice, voluntary but recommended. Protects brand value and campaign effectiveness. Enforcement is soft (should)."
+            }
+          },
+          "enforcement": {
+            "title": "Policy Enforcement Level",
+            "description": "How governance agents treat violations. Regulations are typically \"must\"; standards are typically \"should\".",
+            "type": "string",
+            "enum": [
+              "must",
+              "should",
+              "may"
+            ],
+            "enumDescriptions": {
+              "must": "Legal requirement. Governance agents reject actions that violate this policy.",
+              "should": "Best practice. Governance agents warn on violations but do not block.",
+              "may": "Recommendation. Governance agents log for informational purposes only."
+            }
+          },
+          "jurisdictions": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific."
+          },
+          "region_aliases": {
+            "type": "object",
+            "description": "Named groups of jurisdictions for convenience (e.g., {\"EU\": [\"AT\",\"BE\",\"BG\",...]}). Governance agents expand aliases when matching against a plan's target jurisdictions.",
+            "additionalProperties": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            }
+          },
+          "policy_categories": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "Regulatory categories this policy belongs to (e.g., [\"children_directed\", \"age_restricted\"]). Used for automatic matching against a campaign plan's declared policy_categories. A single policy can belong to multiple categories."
+          },
+          "channels": {
+            "type": "array",
+            "items": {
+              "title": "Media Channel",
+              "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+              "type": "string",
+              "enum": [
+                "display",
+                "olv",
+                "social",
+                "search",
+                "ctv",
+                "linear_tv",
+                "radio",
+                "streaming_audio",
+                "podcast",
+                "dooh",
+                "ooh",
+                "print",
+                "cinema",
+                "email",
+                "gaming",
+                "retail_media",
+                "influencer",
+                "affiliate",
+                "product_placement",
+                "sponsored_intelligence"
+              ],
+              "enumDescriptions": {
+                "display": "Digital display advertising (banners, native, rich media) across web and app",
+                "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                "search": "Search engine advertising and search networks",
+                "ctv": "Connected TV and streaming on television screens",
+                "linear_tv": "Traditional broadcast and cable television",
+                "radio": "Traditional AM/FM radio broadcast",
+                "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                "dooh": "Digital out-of-home screens in public spaces",
+                "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                "print": "Newspapers, magazines, and other print publications",
+                "cinema": "Movie theater advertising",
+                "email": "Email advertising and sponsored newsletter content",
+                "gaming": "In-game advertising across platforms",
+                "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                "influencer": "Creator and influencer marketing partnerships",
+                "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                "product_placement": "Product placement, branded content, and sponsorship integrations",
+                "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+              }
+            },
+            "description": "Advertising channels this policy applies to. If omitted or null, the policy applies to all channels."
+          },
+          "governance_domains": {
+            "type": "array",
+            "items": {
+              "title": "Governance Domain",
+              "description": "Governance sub-domains that a registry policy applies to. Used to indicate which types of governance agents can evaluate this policy.",
+              "type": "string",
+              "enum": [
+                "campaign",
+                "property",
+                "creative",
+                "content_standards"
+              ]
+            },
+            "description": "Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains [\"creative\", \"property\"] can be declared as a feature by both creative and property governance agents."
+          },
+          "effective_date": {
+            "type": "string",
+            "format": "date",
+            "description": "ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level."
+          },
+          "sunset_date": {
+            "type": "string",
+            "format": "date",
+            "description": "ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration."
+          },
+          "source_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Link to the source regulation, standard, or legislation."
+          },
+          "source_name": {
+            "type": "string",
+            "description": "Name of the issuing body (e.g., \"UK Food Standards Agency\", \"US Federal Trade Commission\")."
+          },
+          "policy": {
+            "type": "string",
+            "description": "Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy."
+          },
+          "guidance": {
+            "type": "string",
+            "description": "Implementation notes for governance agent developers. Not used in evaluation prompts."
+          },
+          "exemplars": {
+            "type": "object",
+            "description": "Calibration examples for governance agents, following the Content Standards pattern.",
+            "properties": {
+              "pass": {
+                "type": "array",
+                "items": {
+                  "$ref": "#/$defs/exemplar"
+                },
+                "description": "Scenarios that comply with this policy."
+              },
+              "fail": {
+                "type": "array",
+                "items": {
+                  "$ref": "#/$defs/exemplar"
+                },
+                "description": "Scenarios that violate this policy."
+              }
+            },
+            "additionalProperties": false
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "policy_id",
+          "enforcement",
+          "policy"
+        ],
+        "additionalProperties": false,
+        "$defs": {
+          "exemplar": {
+            "type": "object",
+            "properties": {
+              "scenario": {
+                "type": "string",
+                "description": "A concrete scenario describing an advertising action or configuration."
+              },
+              "explanation": {
+                "type": "string",
+                "description": "Why this scenario passes or fails the policy."
+              }
+            },
+            "required": [
+              "scenario",
+              "explanation"
+            ],
+            "additionalProperties": false
+          }
+        }
+      },
+      "minItems": 1
+    },
+    "calibration_exemplars": {
+      "type": "object",
+      "description": "Updated training/test set to calibrate policy interpretation. Use URL references for pages to be fetched and analyzed, or full artifacts for pre-extracted content.",
+      "properties": {
+        "pass": {
+          "type": "array",
+          "items": {
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "URL reference - specific page to fetch and evaluate",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "url",
+                    "description": "Indicates this is a URL reference"
+                  },
+                  "value": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ]
+              },
+              {
+                "title": "Artifact",
+                "description": "Full artifact with pre-extracted content (text, images, video, audio)",
+                "type": "object",
+                "properties": {
+                  "property_rid": {
+                    "type": "string",
+                    "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                  },
+                  "artifact_id": {
+                    "type": "string",
+                    "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                  },
+                  "variant_id": {
+                    "type": "string",
+                    "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                  },
+                  "format_id": {
+                    "title": "Format ID",
+                    "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                  },
+                  "published_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was published (ISO 8601 format)"
+                  },
+                  "last_update_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was last modified (ISO 8601 format)"
+                  },
+                  "assets": {
+                    "type": "array",
+                    "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                    "maxItems": 200,
+                    "items": {
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Text block (paragraph, heading, etc.)",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "text"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "title",
+                                "paragraph",
+                                "heading",
+                                "caption",
+                                "quote",
+                                "list_item",
+                                "description"
+                              ],
+                              "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 100000
+                            },
+                            "content_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "text/html",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                            },
+                            "heading_level": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "maximum": 6,
+                              "description": "Heading level (1-6), only for role=heading"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this text block, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "content"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Image asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "image"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Image URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alt text or image description"
+                            },
+                            "caption": {
+                              "type": "string",
+                              "description": "Image caption"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "description": "Image width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "description": "Image height in pixels"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this image, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Video asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "video"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "subtitles",
+                                "closed_captions",
+                                "dub",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "thumbnail_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video thumbnail URL"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this video, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Audio asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "audio"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Audio URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "closed_captions",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this audio, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "metadata": {
+                    "type": "object",
+                    "description": "Rich metadata extracted from the artifact",
+                    "properties": {
+                      "canonical": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Canonical URL"
+                      },
+                      "author": {
+                        "type": "string",
+                        "description": "Artifact author name"
+                      },
+                      "keywords": {
+                        "type": "string",
+                        "description": "Artifact keywords"
+                      },
+                      "open_graph": {
+                        "type": "object",
+                        "description": "Open Graph protocol metadata",
+                        "additionalProperties": true
+                      },
+                      "twitter_card": {
+                        "type": "object",
+                        "description": "Twitter Card metadata",
+                        "additionalProperties": true
+                      },
+                      "json_ld": {
+                        "type": "array",
+                        "description": "JSON-LD structured data (schema.org)",
+                        "items": {
+                          "type": "object"
+                        }
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "identifiers": {
+                    "type": "object",
+                    "description": "Platform-specific identifiers for this artifact",
+                    "properties": {
+                      "apple_podcast_id": {
+                        "type": "string",
+                        "description": "Apple Podcasts ID"
+                      },
+                      "spotify_collection_id": {
+                        "type": "string",
+                        "description": "Spotify collection ID"
+                      },
+                      "podcast_guid": {
+                        "type": "string",
+                        "description": "Podcast GUID (from RSS feed)"
+                      },
+                      "youtube_video_id": {
+                        "type": "string",
+                        "description": "YouTube video ID"
+                      },
+                      "rss_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "RSS feed URL"
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "property_rid",
+                  "artifact_id",
+                  "assets"
+                ],
+                "additionalProperties": true,
+                "$defs": {
+                  "asset_access": {
+                    "type": "object",
+                    "description": "Authentication for accessing secured asset URLs",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Bearer token authentication",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "bearer_token"
+                          },
+                          "token": {
+                            "type": "string",
+                            "description": "OAuth2 bearer token for Authorization header"
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "token"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Service account authentication (GCP, AWS)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "service_account"
+                          },
+                          "provider": {
+                            "type": "string",
+                            "enum": [
+                              "gcp",
+                              "aws"
+                            ],
+                            "description": "Cloud provider"
+                          },
+                          "credentials": {
+                            "type": "object",
+                            "description": "Service account credentials",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "provider"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Pre-signed URL (credentials embedded in URL)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "signed_url"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      }
+                    ]
+                  }
+                }
+              }
+            ]
+          },
+          "description": "Content that passes the standards"
+        },
+        "fail": {
+          "type": "array",
+          "items": {
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "URL reference - specific page to fetch and evaluate",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "url",
+                    "description": "Indicates this is a URL reference"
+                  },
+                  "value": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ]
+              },
+              {
+                "title": "Artifact",
+                "description": "Full artifact with pre-extracted content (text, images, video, audio)",
+                "type": "object",
+                "properties": {
+                  "property_rid": {
+                    "type": "string",
+                    "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+                  },
+                  "artifact_id": {
+                    "type": "string",
+                    "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+                  },
+                  "variant_id": {
+                    "type": "string",
+                    "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+                  },
+                  "format_id": {
+                    "title": "Format ID",
+                    "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+                  },
+                  "published_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was published (ISO 8601 format)"
+                  },
+                  "last_update_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the artifact was last modified (ISO 8601 format)"
+                  },
+                  "assets": {
+                    "type": "array",
+                    "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                    "maxItems": 200,
+                    "items": {
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Text block (paragraph, heading, etc.)",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "text"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "title",
+                                "paragraph",
+                                "heading",
+                                "caption",
+                                "quote",
+                                "list_item",
+                                "description"
+                              ],
+                              "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 100000
+                            },
+                            "content_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "text/html",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                            },
+                            "heading_level": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "maximum": 6,
+                              "description": "Heading level (1-6), only for role=heading"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this text block, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "content"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Image asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "image"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Image URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alt text or image description"
+                            },
+                            "caption": {
+                              "type": "string",
+                              "description": "Image caption"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "description": "Image width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "description": "Image height in pixels"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this image, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Video asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "video"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "subtitles",
+                                "closed_captions",
+                                "dub",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "thumbnail_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Video thumbnail URL"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this video, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        },
+                        {
+                          "type": "object",
+                          "description": "Audio asset",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "audio"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Audio URL"
+                            },
+                            "access": {
+                              "$ref": "#/$defs/asset_access",
+                              "description": "Authentication for secured URLs"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds"
+                            },
+                            "transcript": {
+                              "type": "string",
+                              "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                              "maxLength": 200000
+                            },
+                            "transcript_format": {
+                              "type": "string",
+                              "enum": [
+                                "text/plain",
+                                "text/markdown",
+                                "application/json"
+                              ],
+                              "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                              "default": "text/plain"
+                            },
+                            "transcript_source": {
+                              "type": "string",
+                              "enum": [
+                                "original_script",
+                                "closed_captions",
+                                "generated"
+                              ],
+                              "description": "How the transcript was generated"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance for this audio, overrides artifact-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "url"
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "metadata": {
+                    "type": "object",
+                    "description": "Rich metadata extracted from the artifact",
+                    "properties": {
+                      "canonical": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Canonical URL"
+                      },
+                      "author": {
+                        "type": "string",
+                        "description": "Artifact author name"
+                      },
+                      "keywords": {
+                        "type": "string",
+                        "description": "Artifact keywords"
+                      },
+                      "open_graph": {
+                        "type": "object",
+                        "description": "Open Graph protocol metadata",
+                        "additionalProperties": true
+                      },
+                      "twitter_card": {
+                        "type": "object",
+                        "description": "Twitter Card metadata",
+                        "additionalProperties": true
+                      },
+                      "json_ld": {
+                        "type": "array",
+                        "description": "JSON-LD structured data (schema.org)",
+                        "items": {
+                          "type": "object"
+                        }
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "provenance": {
+                    "title": "Provenance",
+                    "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                    "type": "object",
+                    "properties": {
+                      "digital_source_type": {
+                        "title": "Digital Source Type",
+                        "description": "IPTC-aligned classification of AI involvement in producing this content",
+                        "type": "string",
+                        "enum": [
+                          "digital_capture",
+                          "digital_creation",
+                          "trained_algorithmic_media",
+                          "composite_with_trained_algorithmic_media",
+                          "algorithmic_media",
+                          "composite_capture",
+                          "composite_synthetic",
+                          "human_edits",
+                          "data_driven_media"
+                        ],
+                        "enumDescriptions": {
+                          "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                          "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                          "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                          "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                          "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                          "composite_capture": "Multiple digital captures composited together without AI",
+                          "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                          "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                          "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                        }
+                      },
+                      "ai_tool": {
+                        "type": "object",
+                        "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                          },
+                          "provider": {
+                            "type": "string",
+                            "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "human_oversight": {
+                        "type": "string",
+                        "description": "Level of human involvement in the AI-assisted creation process",
+                        "enum": [
+                          "none",
+                          "prompt_only",
+                          "selected",
+                          "edited",
+                          "directed"
+                        ],
+                        "enumDescriptions": {
+                          "none": "Fully automated with no human involvement in generation",
+                          "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                          "selected": "Human selected from multiple AI-generated candidates",
+                          "edited": "Human edited or refined AI-generated output",
+                          "directed": "Human directed the creative process with AI as an assistive tool"
+                        }
+                      },
+                      "declared_by": {
+                        "type": "object",
+                        "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                        "properties": {
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the agent or service that declared this provenance"
+                          },
+                          "role": {
+                            "type": "string",
+                            "enum": [
+                              "creator",
+                              "advertiser",
+                              "agency",
+                              "platform",
+                              "tool"
+                            ],
+                            "description": "Role of the declaring party in the supply chain",
+                            "enumDescriptions": {
+                              "creator": "The party that created or generated the content",
+                              "advertiser": "The brand or advertiser that owns the content",
+                              "agency": "Agency acting on behalf of the advertiser",
+                              "platform": "Ad platform or publisher that processed the content",
+                              "tool": "Automated tool or service that attached provenance metadata"
+                            }
+                          }
+                        },
+                        "required": [
+                          "role"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "declared_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                      },
+                      "created_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this content was created or generated (ISO 8601)"
+                      },
+                      "c2pa": {
+                        "type": "object",
+                        "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                        "properties": {
+                          "manifest_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the C2PA manifest store for this content"
+                          }
+                        },
+                        "required": [
+                          "manifest_url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "disclosure": {
+                        "type": "object",
+                        "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                        "properties": {
+                          "required": {
+                            "type": "boolean",
+                            "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                          },
+                          "jurisdictions": {
+                            "type": "array",
+                            "description": "Jurisdictions where disclosure obligations apply",
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "country": {
+                                  "type": "string",
+                                  "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                },
+                                "region": {
+                                  "type": "string",
+                                  "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                },
+                                "regulation": {
+                                  "type": "string",
+                                  "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                },
+                                "label_text": {
+                                  "type": "string",
+                                  "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                },
+                                "render_guidance": {
+                                  "type": "object",
+                                  "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                  "minProperties": 1,
+                                  "properties": {
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                    },
+                                    "positions": {
+                                      "type": "array",
+                                      "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                      "items": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "minItems": 1,
+                                      "uniqueItems": true
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "country",
+                                "regulation"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "required"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "verification": {
+                        "type": "array",
+                        "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                        "minItems": 1,
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "verified_by": {
+                              "type": "string",
+                              "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                            },
+                            "verified_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When the verification was performed (ISO 8601)"
+                            },
+                            "result": {
+                              "type": "string",
+                              "enum": [
+                                "authentic",
+                                "ai_generated",
+                                "ai_modified",
+                                "inconclusive"
+                              ],
+                              "description": "Verification outcome"
+                            },
+                            "confidence": {
+                              "type": "number",
+                              "minimum": 0,
+                              "maximum": 1,
+                              "description": "Confidence score of the verification result (0.0 to 1.0)"
+                            },
+                            "details_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the full verification report"
+                            }
+                          },
+                          "required": [
+                            "verified_by",
+                            "result"
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "identifiers": {
+                    "type": "object",
+                    "description": "Platform-specific identifiers for this artifact",
+                    "properties": {
+                      "apple_podcast_id": {
+                        "type": "string",
+                        "description": "Apple Podcasts ID"
+                      },
+                      "spotify_collection_id": {
+                        "type": "string",
+                        "description": "Spotify collection ID"
+                      },
+                      "podcast_guid": {
+                        "type": "string",
+                        "description": "Podcast GUID (from RSS feed)"
+                      },
+                      "youtube_video_id": {
+                        "type": "string",
+                        "description": "YouTube video ID"
+                      },
+                      "rss_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "RSS feed URL"
+                      }
+                    },
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "property_rid",
+                  "artifact_id",
+                  "assets"
+                ],
+                "additionalProperties": true,
+                "$defs": {
+                  "asset_access": {
+                    "type": "object",
+                    "description": "Authentication for accessing secured asset URLs",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Bearer token authentication",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "bearer_token"
+                          },
+                          "token": {
+                            "type": "string",
+                            "description": "OAuth2 bearer token for Authorization header"
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "token"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Service account authentication (GCP, AWS)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "service_account"
+                          },
+                          "provider": {
+                            "type": "string",
+                            "enum": [
+                              "gcp",
+                              "aws"
+                            ],
+                            "description": "Cloud provider"
+                          },
+                          "credentials": {
+                            "type": "object",
+                            "description": "Service account credentials",
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "method",
+                          "provider"
+                        ]
+                      },
+                      {
+                        "type": "object",
+                        "description": "Pre-signed URL (credentials embedded in URL)",
+                        "properties": {
+                          "method": {
+                            "type": "string",
+                            "const": "signed_url"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      }
+                    ]
+                  }
+                }
+              }
+            ]
+          },
+          "description": "Content that fails the standards"
+        }
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "standards_id"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.210Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/update-content-standards-response.json b/schemas/cache/bundled/content-standards/update-content-standards-response.json
new file mode 100644
index 000000000..71211aa1b
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/update-content-standards-response.json
@@ -0,0 +1,130 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Content Standards Response",
+  "description": "Response from updating a content standards configuration",
+  "oneOf": [
+    {
+      "title": "UpdateContentStandardsSuccess",
+      "type": "object",
+      "properties": {
+        "success": {
+          "type": "boolean",
+          "const": true,
+          "description": "Indicates the update was applied successfully"
+        },
+        "standards_id": {
+          "type": "string",
+          "description": "ID of the updated standards configuration"
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "success",
+        "standards_id"
+      ],
+      "additionalProperties": true
+    },
+    {
+      "title": "UpdateContentStandardsError",
+      "type": "object",
+      "properties": {
+        "success": {
+          "type": "boolean",
+          "const": false,
+          "description": "Indicates the update failed"
+        },
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "description": "Errors that occurred during the update",
+          "minItems": 1
+        },
+        "conflicting_standards_id": {
+          "type": "string",
+          "description": "If scope change conflicts with another configuration, the ID of the conflicting standards"
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "success",
+        "errors"
+      ],
+      "additionalProperties": true
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.214Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/validate-content-delivery-request.json b/schemas/cache/bundled/content-standards/validate-content-delivery-request.json
new file mode 100644
index 000000000..cabe25e88
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/validate-content-delivery-request.json
@@ -0,0 +1,1947 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Content Delivery Request",
+  "description": "Request parameters for batch validating delivery records against content safety policies",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "standards_id": {
+      "type": "string",
+      "description": "Standards configuration to validate against"
+    },
+    "records": {
+      "type": "array",
+      "description": "Delivery records to validate (max 10,000)",
+      "minItems": 1,
+      "maxItems": 10000,
+      "items": {
+        "type": "object",
+        "properties": {
+          "record_id": {
+            "type": "string",
+            "description": "Unique identifier for this delivery record"
+          },
+          "media_buy_id": {
+            "type": "string",
+            "description": "Media buy this record belongs to (when batching across multiple buys)"
+          },
+          "timestamp": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the delivery occurred"
+          },
+          "artifact": {
+            "title": "Artifact",
+            "description": "Artifact where ad was delivered",
+            "type": "object",
+            "properties": {
+              "property_rid": {
+                "type": "string",
+                "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+              },
+              "artifact_id": {
+                "type": "string",
+                "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+              },
+              "variant_id": {
+                "type": "string",
+                "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+              },
+              "format_id": {
+                "title": "Format ID",
+                "description": "Optional reference to a format definition. Uses the same format registry as creative formats.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+              },
+              "published_time": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When the artifact was published (ISO 8601 format)"
+              },
+              "last_update_time": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When the artifact was last modified (ISO 8601 format)"
+              },
+              "assets": {
+                "type": "array",
+                "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+                "maxItems": 200,
+                "items": {
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "description": "Text block (paragraph, heading, etc.)",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "const": "text"
+                        },
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "title",
+                            "paragraph",
+                            "heading",
+                            "caption",
+                            "quote",
+                            "list_item",
+                            "description"
+                          ],
+                          "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+                        },
+                        "content": {
+                          "type": "string",
+                          "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                          "maxLength": 100000
+                        },
+                        "content_format": {
+                          "type": "string",
+                          "enum": [
+                            "text/plain",
+                            "text/markdown",
+                            "text/html",
+                            "application/json"
+                          ],
+                          "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                          "default": "text/plain"
+                        },
+                        "language": {
+                          "type": "string",
+                          "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+                        },
+                        "heading_level": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "maximum": 6,
+                          "description": "Heading level (1-6), only for role=heading"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance for this text block, overrides artifact-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "content"
+                      ]
+                    },
+                    {
+                      "type": "object",
+                      "description": "Image asset",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "const": "image"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Image URL"
+                        },
+                        "access": {
+                          "$ref": "#/$defs/asset_access",
+                          "description": "Authentication for secured URLs"
+                        },
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Alt text or image description"
+                        },
+                        "caption": {
+                          "type": "string",
+                          "description": "Image caption"
+                        },
+                        "width": {
+                          "type": "integer",
+                          "description": "Image width in pixels"
+                        },
+                        "height": {
+                          "type": "integer",
+                          "description": "Image height in pixels"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance for this image, overrides artifact-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "url"
+                      ]
+                    },
+                    {
+                      "type": "object",
+                      "description": "Video asset",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "const": "video"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Video URL"
+                        },
+                        "access": {
+                          "$ref": "#/$defs/asset_access",
+                          "description": "Authentication for secured URLs"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Video duration in milliseconds"
+                        },
+                        "transcript": {
+                          "type": "string",
+                          "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                          "maxLength": 200000
+                        },
+                        "transcript_format": {
+                          "type": "string",
+                          "enum": [
+                            "text/plain",
+                            "text/markdown",
+                            "application/json"
+                          ],
+                          "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                          "default": "text/plain"
+                        },
+                        "transcript_source": {
+                          "type": "string",
+                          "enum": [
+                            "original_script",
+                            "subtitles",
+                            "closed_captions",
+                            "dub",
+                            "generated"
+                          ],
+                          "description": "How the transcript was generated"
+                        },
+                        "thumbnail_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Video thumbnail URL"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance for this video, overrides artifact-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "url"
+                      ]
+                    },
+                    {
+                      "type": "object",
+                      "description": "Audio asset",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "const": "audio"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Audio URL"
+                        },
+                        "access": {
+                          "$ref": "#/$defs/asset_access",
+                          "description": "Authentication for secured URLs"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Audio duration in milliseconds"
+                        },
+                        "transcript": {
+                          "type": "string",
+                          "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
+                          "maxLength": 200000
+                        },
+                        "transcript_format": {
+                          "type": "string",
+                          "enum": [
+                            "text/plain",
+                            "text/markdown",
+                            "application/json"
+                          ],
+                          "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                          "default": "text/plain"
+                        },
+                        "transcript_source": {
+                          "type": "string",
+                          "enum": [
+                            "original_script",
+                            "closed_captions",
+                            "generated"
+                          ],
+                          "description": "How the transcript was generated"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance for this audio, overrides artifact-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "url"
+                      ]
+                    }
+                  ]
+                }
+              },
+              "metadata": {
+                "type": "object",
+                "description": "Rich metadata extracted from the artifact",
+                "properties": {
+                  "canonical": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Canonical URL"
+                  },
+                  "author": {
+                    "type": "string",
+                    "description": "Artifact author name"
+                  },
+                  "keywords": {
+                    "type": "string",
+                    "description": "Artifact keywords"
+                  },
+                  "open_graph": {
+                    "type": "object",
+                    "description": "Open Graph protocol metadata",
+                    "additionalProperties": true
+                  },
+                  "twitter_card": {
+                    "type": "object",
+                    "description": "Twitter Card metadata",
+                    "additionalProperties": true
+                  },
+                  "json_ld": {
+                    "type": "array",
+                    "description": "JSON-LD structured data (schema.org)",
+                    "items": {
+                      "type": "object"
+                    }
+                  }
+                },
+                "additionalProperties": true
+              },
+              "provenance": {
+                "title": "Provenance",
+                "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance.",
+                "type": "object",
+                "properties": {
+                  "digital_source_type": {
+                    "title": "Digital Source Type",
+                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                    "type": "string",
+                    "enum": [
+                      "digital_capture",
+                      "digital_creation",
+                      "trained_algorithmic_media",
+                      "composite_with_trained_algorithmic_media",
+                      "algorithmic_media",
+                      "composite_capture",
+                      "composite_synthetic",
+                      "human_edits",
+                      "data_driven_media"
+                    ],
+                    "enumDescriptions": {
+                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                      "composite_capture": "Multiple digital captures composited together without AI",
+                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                    }
+                  },
+                  "ai_tool": {
+                    "type": "object",
+                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                      },
+                      "version": {
+                        "type": "string",
+                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                      },
+                      "provider": {
+                        "type": "string",
+                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "human_oversight": {
+                    "type": "string",
+                    "description": "Level of human involvement in the AI-assisted creation process",
+                    "enum": [
+                      "none",
+                      "prompt_only",
+                      "selected",
+                      "edited",
+                      "directed"
+                    ],
+                    "enumDescriptions": {
+                      "none": "Fully automated with no human involvement in generation",
+                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                      "selected": "Human selected from multiple AI-generated candidates",
+                      "edited": "Human edited or refined AI-generated output",
+                      "directed": "Human directed the creative process with AI as an assistive tool"
+                    }
+                  },
+                  "declared_by": {
+                    "type": "object",
+                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent or service that declared this provenance"
+                      },
+                      "role": {
+                        "type": "string",
+                        "enum": [
+                          "creator",
+                          "advertiser",
+                          "agency",
+                          "platform",
+                          "tool"
+                        ],
+                        "description": "Role of the declaring party in the supply chain",
+                        "enumDescriptions": {
+                          "creator": "The party that created or generated the content",
+                          "advertiser": "The brand or advertiser that owns the content",
+                          "agency": "Agency acting on behalf of the advertiser",
+                          "platform": "Ad platform or publisher that processed the content",
+                          "tool": "Automated tool or service that attached provenance metadata"
+                        }
+                      }
+                    },
+                    "required": [
+                      "role"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "declared_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                  },
+                  "created_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this content was created or generated (ISO 8601)"
+                  },
+                  "c2pa": {
+                    "type": "object",
+                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                    "properties": {
+                      "manifest_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the C2PA manifest store for this content"
+                      }
+                    },
+                    "required": [
+                      "manifest_url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "disclosure": {
+                    "type": "object",
+                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                    "properties": {
+                      "required": {
+                        "type": "boolean",
+                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                      },
+                      "jurisdictions": {
+                        "type": "array",
+                        "description": "Jurisdictions where disclosure obligations apply",
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "country": {
+                              "type": "string",
+                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                            },
+                            "region": {
+                              "type": "string",
+                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                            },
+                            "regulation": {
+                              "type": "string",
+                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                            },
+                            "label_text": {
+                              "type": "string",
+                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                            },
+                            "render_guidance": {
+                              "type": "object",
+                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                              "minProperties": 1,
+                              "properties": {
+                                "persistence": {
+                                  "title": "Disclosure Persistence",
+                                  "description": "How long the disclosure must persist during content playback or display",
+                                  "type": "string",
+                                  "enum": [
+                                    "continuous",
+                                    "initial",
+                                    "flexible"
+                                  ],
+                                  "enumDescriptions": {
+                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                  }
+                                },
+                                "min_duration_ms": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                },
+                                "positions": {
+                                  "type": "array",
+                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                  "items": {
+                                    "title": "Disclosure Position",
+                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                    "type": "string",
+                                    "enum": [
+                                      "prominent",
+                                      "footer",
+                                      "audio",
+                                      "subtitle",
+                                      "overlay",
+                                      "end_card",
+                                      "pre_roll",
+                                      "companion"
+                                    ]
+                                  },
+                                  "minItems": 1,
+                                  "uniqueItems": true
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "country",
+                            "regulation"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "minItems": 1
+                      }
+                    },
+                    "required": [
+                      "required"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "verification": {
+                    "type": "array",
+                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                    "minItems": 1,
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "verified_by": {
+                          "type": "string",
+                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                        },
+                        "verified_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When the verification was performed (ISO 8601)"
+                        },
+                        "result": {
+                          "type": "string",
+                          "enum": [
+                            "authentic",
+                            "ai_generated",
+                            "ai_modified",
+                            "inconclusive"
+                          ],
+                          "description": "Verification outcome"
+                        },
+                        "confidence": {
+                          "type": "number",
+                          "minimum": 0,
+                          "maximum": 1,
+                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                        },
+                        "details_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the full verification report"
+                        }
+                      },
+                      "required": [
+                        "verified_by",
+                        "result"
+                      ],
+                      "additionalProperties": true
+                    }
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "additionalProperties": true
+              },
+              "identifiers": {
+                "type": "object",
+                "description": "Platform-specific identifiers for this artifact",
+                "properties": {
+                  "apple_podcast_id": {
+                    "type": "string",
+                    "description": "Apple Podcasts ID"
+                  },
+                  "spotify_collection_id": {
+                    "type": "string",
+                    "description": "Spotify collection ID"
+                  },
+                  "podcast_guid": {
+                    "type": "string",
+                    "description": "Podcast GUID (from RSS feed)"
+                  },
+                  "youtube_video_id": {
+                    "type": "string",
+                    "description": "YouTube video ID"
+                  },
+                  "rss_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "RSS feed URL"
+                  }
+                },
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "property_rid",
+              "artifact_id",
+              "assets"
+            ],
+            "additionalProperties": true,
+            "$defs": {
+              "asset_access": {
+                "type": "object",
+                "description": "Authentication for accessing secured asset URLs",
+                "oneOf": [
+                  {
+                    "type": "object",
+                    "description": "Bearer token authentication",
+                    "properties": {
+                      "method": {
+                        "type": "string",
+                        "const": "bearer_token"
+                      },
+                      "token": {
+                        "type": "string",
+                        "description": "OAuth2 bearer token for Authorization header"
+                      }
+                    },
+                    "required": [
+                      "method",
+                      "token"
+                    ]
+                  },
+                  {
+                    "type": "object",
+                    "description": "Service account authentication (GCP, AWS)",
+                    "properties": {
+                      "method": {
+                        "type": "string",
+                        "const": "service_account"
+                      },
+                      "provider": {
+                        "type": "string",
+                        "enum": [
+                          "gcp",
+                          "aws"
+                        ],
+                        "description": "Cloud provider"
+                      },
+                      "credentials": {
+                        "type": "object",
+                        "description": "Service account credentials",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "method",
+                      "provider"
+                    ]
+                  },
+                  {
+                    "type": "object",
+                    "description": "Pre-signed URL (credentials embedded in URL)",
+                    "properties": {
+                      "method": {
+                        "type": "string",
+                        "const": "signed_url"
+                      }
+                    },
+                    "required": [
+                      "method"
+                    ]
+                  }
+                ]
+              }
+            }
+          },
+          "country": {
+            "type": "string",
+            "description": "ISO 3166-1 alpha-2 country code where delivery occurred"
+          },
+          "channel": {
+            "type": "string",
+            "description": "Channel type (e.g., display, video, audio, social)"
+          },
+          "brand_context": {
+            "type": "object",
+            "description": "Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.",
+            "properties": {
+              "brand_id": {
+                "type": "string",
+                "description": "Brand identifier"
+              },
+              "sku_id": {
+                "type": "string",
+                "description": "Product/SKU identifier if applicable"
+              }
+            }
+          }
+        },
+        "required": [
+          "record_id",
+          "artifact"
+        ]
+      }
+    },
+    "feature_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "description": "Specific features to evaluate (defaults to all)"
+    },
+    "include_passed": {
+      "type": "boolean",
+      "default": true,
+      "description": "Include passed records in results"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "standards_id",
+    "records"
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.216Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/content-standards/validate-content-delivery-response.json b/schemas/cache/bundled/content-standards/validate-content-delivery-response.json
new file mode 100644
index 000000000..3892969f0
--- /dev/null
+++ b/schemas/cache/bundled/content-standards/validate-content-delivery-response.json
@@ -0,0 +1,193 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Content Delivery Response",
+  "description": "Response payload with per-record verdicts and optional feature breakdown",
+  "type": "object",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Success response",
+      "properties": {
+        "summary": {
+          "type": "object",
+          "description": "Summary counts across all records",
+          "properties": {
+            "total_records": {
+              "type": "integer"
+            },
+            "passed_records": {
+              "type": "integer"
+            },
+            "failed_records": {
+              "type": "integer"
+            }
+          },
+          "required": [
+            "total_records",
+            "passed_records",
+            "failed_records"
+          ]
+        },
+        "results": {
+          "type": "array",
+          "description": "Per-record evaluation results",
+          "items": {
+            "type": "object",
+            "properties": {
+              "record_id": {
+                "type": "string",
+                "description": "Which delivery record was evaluated"
+              },
+              "verdict": {
+                "type": "string",
+                "enum": [
+                  "pass",
+                  "fail"
+                ],
+                "description": "Overall pass/fail verdict for this record"
+              },
+              "features": {
+                "type": "array",
+                "description": "Per-feature breakdown. When present, SHOULD include all failed and warning features. MAY include passed features. Oracle pattern: exposes verdict + rule pointer, never the seller's threshold or the caller's submitted value (the seller authored the content standards).",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "feature_id": {
+                      "type": "string",
+                      "description": "Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'image_dpi'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact', 'delivery:authorization'. Reserved prefixes: 'record:', 'delivery:'."
+                    },
+                    "status": {
+                      "type": "string",
+                      "enum": [
+                        "passed",
+                        "failed",
+                        "warning",
+                        "unevaluated"
+                      ]
+                    },
+                    "policy_id": {
+                      "type": "string",
+                      "description": "Registry policy ID that triggered this result. Present when the result originates from a specific registry policy (e.g., GARM category, CSBS standard). Enables programmatic routing by looking up the policy in the registry."
+                    },
+                    "explanation": {
+                      "type": "string",
+                      "description": "Directional human-readable explanation (e.g., 'Below minimum resolution for display placement'). Avoid quantitative thresholds \u2014 the evaluator is the oracle."
+                    },
+                    "confidence": {
+                      "type": "number",
+                      "minimum": 0,
+                      "maximum": 1,
+                      "description": "Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones."
+                    }
+                  },
+                  "required": [
+                    "feature_id",
+                    "status"
+                  ]
+                }
+              }
+            },
+            "required": [
+              "record_id",
+              "verdict"
+            ]
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "summary",
+        "results"
+      ]
+    },
+    {
+      "type": "object",
+      "description": "Error response",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ]
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.217Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/core/tasks-get-request.json b/schemas/cache/bundled/core/tasks-get-request.json
new file mode 100644
index 000000000..23662b2fe
--- /dev/null
+++ b/schemas/cache/bundled/core/tasks-get-request.json
@@ -0,0 +1,58 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks Get Request",
+  "description": "Request parameters for retrieving a specific task by ID with optional conversation history across all AdCP domains",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "task_id": {
+      "type": "string",
+      "description": "Unique identifier of the task to retrieve"
+    },
+    "include_history": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include full conversation history for this task (may increase response size)"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "task_id"
+  ],
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Check task status",
+      "data": {
+        "task_id": "task_456"
+      }
+    },
+    {
+      "description": "Get task with full conversation history",
+      "data": {
+        "task_id": "task_123",
+        "include_history": true
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.219Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/core/tasks-get-response.json b/schemas/cache/bundled/core/tasks-get-response.json
new file mode 100644
index 000000000..f4951b4cd
--- /dev/null
+++ b/schemas/cache/bundled/core/tasks-get-response.json
@@ -0,0 +1,275 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks Get Response",
+  "description": "Response containing detailed information about a specific task including status and optional conversation history across all AdCP protocols",
+  "type": "object",
+  "properties": {
+    "task_id": {
+      "type": "string",
+      "description": "Unique identifier for this task"
+    },
+    "task_type": {
+      "title": "Task Type",
+      "description": "Type of AdCP operation",
+      "type": "string",
+      "enum": [
+        "create_media_buy",
+        "update_media_buy",
+        "sync_creatives",
+        "activate_signal",
+        "get_signals",
+        "create_property_list",
+        "update_property_list",
+        "get_property_list",
+        "list_property_lists",
+        "delete_property_list",
+        "sync_accounts",
+        "get_account_financials",
+        "get_creative_delivery",
+        "sync_event_sources",
+        "sync_audiences",
+        "sync_catalogs",
+        "log_event",
+        "get_brand_identity",
+        "get_rights",
+        "acquire_rights"
+      ],
+      "enumDescriptions": {
+        "create_media_buy": "Media-buy domain: Create a new advertising campaign with one or more packages",
+        "update_media_buy": "Media-buy domain: Update campaign settings, package configuration, or delivery parameters",
+        "sync_creatives": "Media-buy domain: Sync creative assets to publisher's library with upsert semantics",
+        "activate_signal": "Signals domain: Activate an audience signal on a specific platform or account",
+        "get_signals": "Signals domain: Discover available audience signals based on natural language description",
+        "create_property_list": "Property domain: Create a new property list with filters and brand reference",
+        "update_property_list": "Property domain: Update an existing property list",
+        "get_property_list": "Property domain: Retrieve a property list with resolved properties",
+        "list_property_lists": "Property domain: List all accessible property lists",
+        "delete_property_list": "Property domain: Delete a property list",
+        "sync_accounts": "Account domain: Sync advertiser accounts with a seller using upsert semantics",
+        "get_account_financials": "Account domain: Query financial status of an operator-billed account (spend, credit, invoices)",
+        "get_creative_delivery": "Creative domain: Retrieve variant-level creative delivery data",
+        "sync_event_sources": "Media-buy domain: Configure event sources on an account with upsert semantics",
+        "sync_audiences": "Media-buy domain: Manage first-party CRM audiences on an account with delta upsert semantics",
+        "sync_catalogs": "Media-buy domain: Sync catalog feeds (products, inventory, stores, promotions, offerings) to a platform with approval workflow",
+        "log_event": "Media-buy domain: Send conversion or marketing events for attribution",
+        "get_brand_identity": "Brand domain: Retrieve brand identity data (logos, colors, tone, assets, voice config) from a brand agent",
+        "get_rights": "Brand domain: Search for licensable rights across a brand agent's roster with pricing",
+        "acquire_rights": "Brand domain: Acquire rights from a brand agent with contractual clearance and generation credentials"
+      },
+      "notes": [
+        "Task types map to specific AdCP task operations",
+        "Each task type belongs to the 'media-buy', 'signals', 'property', 'account', 'creative', or 'brand' domain",
+        "This enum is used in task management APIs (tasks/list, tasks/get) and webhook payloads",
+        "New task types require a minor version bump per semantic versioning"
+      ]
+    },
+    "protocol": {
+      "title": "AdCP Protocol",
+      "description": "AdCP protocol this task belongs to",
+      "type": "string",
+      "enum": [
+        "media-buy",
+        "signals",
+        "governance",
+        "creative",
+        "brand",
+        "sponsored-intelligence"
+      ],
+      "enumDescriptions": {
+        "media-buy": "Campaign creation, package management, delivery optimization, and conversion tracking",
+        "signals": "Audience signal discovery and activation",
+        "governance": "Property governance (identity, authorization, data, selection), brand standards, and compliance",
+        "creative": "Creative asset management, format discovery, and rendering",
+        "brand": "Brand identity, rights discovery, and rights acquisition",
+        "sponsored-intelligence": "AI-mediated commerce and conversational sponsored experiences, including buyer-agent sessions and measurement of AI-surfaced outcomes"
+      }
+    },
+    "status": {
+      "title": "Task Status",
+      "description": "Current task status",
+      "type": "string",
+      "enum": [
+        "submitted",
+        "working",
+        "input-required",
+        "completed",
+        "canceled",
+        "failed",
+        "rejected",
+        "auth-required",
+        "unknown"
+      ],
+      "enumDescriptions": {
+        "submitted": "Task accepted and queued for long-running execution (hours to days). Client should poll with tasks/get or provide webhook_url at protocol level.",
+        "working": "Agent is actively processing the task, expect completion within 120 seconds",
+        "input-required": "Task is paused and waiting for input from the user (e.g., clarification, approval)",
+        "completed": "Task has been successfully completed",
+        "canceled": "Task was canceled by the user",
+        "failed": "Task failed due to an error during execution",
+        "rejected": "Task was rejected by the agent and was not started",
+        "auth-required": "Task requires authentication to proceed",
+        "unknown": "Task is in an unknown or indeterminate state"
+      }
+    },
+    "created_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the task was initially created (ISO 8601)"
+    },
+    "updated_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the task was last updated (ISO 8601)"
+    },
+    "completed_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the task completed (ISO 8601, only for completed/failed/canceled tasks)"
+    },
+    "has_webhook": {
+      "type": "boolean",
+      "description": "Whether this task has webhook configuration"
+    },
+    "progress": {
+      "type": "object",
+      "description": "Progress information for long-running tasks",
+      "properties": {
+        "percentage": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 100,
+          "description": "Completion percentage (0-100)"
+        },
+        "current_step": {
+          "type": "string",
+          "description": "Current step or phase of the operation"
+        },
+        "total_steps": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Total number of steps in the operation"
+        },
+        "step_number": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Current step number"
+        }
+      },
+      "additionalProperties": true
+    },
+    "error": {
+      "type": "object",
+      "description": "Error details for failed tasks",
+      "properties": {
+        "code": {
+          "type": "string",
+          "description": "Error code for programmatic handling"
+        },
+        "message": {
+          "type": "string",
+          "description": "Detailed error message"
+        },
+        "details": {
+          "type": "object",
+          "description": "Additional error context",
+          "properties": {
+            "protocol": {
+              "title": "AdCP Protocol",
+              "description": "AdCP protocol where error occurred",
+              "type": "string",
+              "enum": [
+                "media-buy",
+                "signals",
+                "governance",
+                "creative",
+                "brand",
+                "sponsored-intelligence"
+              ],
+              "enumDescriptions": {
+                "media-buy": "Campaign creation, package management, delivery optimization, and conversion tracking",
+                "signals": "Audience signal discovery and activation",
+                "governance": "Property governance (identity, authorization, data, selection), brand standards, and compliance",
+                "creative": "Creative asset management, format discovery, and rendering",
+                "brand": "Brand identity, rights discovery, and rights acquisition",
+                "sponsored-intelligence": "AI-mediated commerce and conversational sponsored experiences, including buyer-agent sessions and measurement of AI-surfaced outcomes"
+              }
+            },
+            "operation": {
+              "type": "string",
+              "description": "Specific operation that failed"
+            },
+            "specific_context": {
+              "type": "object",
+              "description": "Domain-specific error context",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "code",
+        "message"
+      ],
+      "additionalProperties": true
+    },
+    "history": {
+      "type": "array",
+      "description": "Complete conversation history for this task (only included if include_history was true in request)",
+      "items": {
+        "type": "object",
+        "properties": {
+          "timestamp": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When this exchange occurred (ISO 8601)"
+          },
+          "type": {
+            "type": "string",
+            "enum": [
+              "request",
+              "response"
+            ],
+            "description": "Whether this was a request from client or response from server"
+          },
+          "data": {
+            "type": "object",
+            "description": "The full request or response payload",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "timestamp",
+          "type",
+          "data"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "task_id",
+    "task_type",
+    "protocol",
+    "status",
+    "created_at",
+    "updated_at"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.219Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/core/tasks-list-request.json b/schemas/cache/bundled/core/tasks-list-request.json
new file mode 100644
index 000000000..657353c29
--- /dev/null
+++ b/schemas/cache/bundled/core/tasks-list-request.json
@@ -0,0 +1,400 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks List Request",
+  "description": "Request parameters for listing and filtering async tasks across all AdCP protocols with state reconciliation capabilities",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "filters": {
+      "type": "object",
+      "description": "Filter criteria for querying tasks",
+      "properties": {
+        "protocol": {
+          "title": "AdCP Protocol",
+          "description": "Filter by single AdCP protocol",
+          "type": "string",
+          "enum": [
+            "media-buy",
+            "signals",
+            "governance",
+            "creative",
+            "brand",
+            "sponsored-intelligence"
+          ],
+          "enumDescriptions": {
+            "media-buy": "Campaign creation, package management, delivery optimization, and conversion tracking",
+            "signals": "Audience signal discovery and activation",
+            "governance": "Property governance (identity, authorization, data, selection), brand standards, and compliance",
+            "creative": "Creative asset management, format discovery, and rendering",
+            "brand": "Brand identity, rights discovery, and rights acquisition",
+            "sponsored-intelligence": "AI-mediated commerce and conversational sponsored experiences, including buyer-agent sessions and measurement of AI-surfaced outcomes"
+          }
+        },
+        "protocols": {
+          "type": "array",
+          "description": "Filter by multiple AdCP protocols",
+          "items": {
+            "title": "AdCP Protocol",
+            "description": "AdCP protocols for task categorization \u2014 referenced by tasks-list-request, webhook payloads, and other task-lifecycle surfaces. Values are kebab-case. This enum shares the same axis as supported_protocols (see /schemas/protocol/get-adcp-capabilities-response.json), which uses snake_case on the wire. Compliance testing support is declared via the `capabilities.compliance_testing` block, not as a protocol value.",
+            "type": "string",
+            "enum": [
+              "media-buy",
+              "signals",
+              "governance",
+              "creative",
+              "brand",
+              "sponsored-intelligence"
+            ],
+            "enumDescriptions": {
+              "media-buy": "Campaign creation, package management, delivery optimization, and conversion tracking",
+              "signals": "Audience signal discovery and activation",
+              "governance": "Property governance (identity, authorization, data, selection), brand standards, and compliance",
+              "creative": "Creative asset management, format discovery, and rendering",
+              "brand": "Brand identity, rights discovery, and rights acquisition",
+              "sponsored-intelligence": "AI-mediated commerce and conversational sponsored experiences, including buyer-agent sessions and measurement of AI-surfaced outcomes"
+            }
+          },
+          "minItems": 1
+        },
+        "status": {
+          "title": "Task Status",
+          "description": "Filter by single task status",
+          "type": "string",
+          "enum": [
+            "submitted",
+            "working",
+            "input-required",
+            "completed",
+            "canceled",
+            "failed",
+            "rejected",
+            "auth-required",
+            "unknown"
+          ],
+          "enumDescriptions": {
+            "submitted": "Task accepted and queued for long-running execution (hours to days). Client should poll with tasks/get or provide webhook_url at protocol level.",
+            "working": "Agent is actively processing the task, expect completion within 120 seconds",
+            "input-required": "Task is paused and waiting for input from the user (e.g., clarification, approval)",
+            "completed": "Task has been successfully completed",
+            "canceled": "Task was canceled by the user",
+            "failed": "Task failed due to an error during execution",
+            "rejected": "Task was rejected by the agent and was not started",
+            "auth-required": "Task requires authentication to proceed",
+            "unknown": "Task is in an unknown or indeterminate state"
+          }
+        },
+        "statuses": {
+          "type": "array",
+          "description": "Filter by multiple task statuses",
+          "items": {
+            "title": "Task Status",
+            "description": "Standardized task status values based on A2A TaskState enum. Indicates the current state of any AdCP operation.",
+            "type": "string",
+            "enum": [
+              "submitted",
+              "working",
+              "input-required",
+              "completed",
+              "canceled",
+              "failed",
+              "rejected",
+              "auth-required",
+              "unknown"
+            ],
+            "enumDescriptions": {
+              "submitted": "Task accepted and queued for long-running execution (hours to days). Client should poll with tasks/get or provide webhook_url at protocol level.",
+              "working": "Agent is actively processing the task, expect completion within 120 seconds",
+              "input-required": "Task is paused and waiting for input from the user (e.g., clarification, approval)",
+              "completed": "Task has been successfully completed",
+              "canceled": "Task was canceled by the user",
+              "failed": "Task failed due to an error during execution",
+              "rejected": "Task was rejected by the agent and was not started",
+              "auth-required": "Task requires authentication to proceed",
+              "unknown": "Task is in an unknown or indeterminate state"
+            }
+          },
+          "minItems": 1
+        },
+        "task_type": {
+          "title": "Task Type",
+          "description": "Filter by single task type",
+          "type": "string",
+          "enum": [
+            "create_media_buy",
+            "update_media_buy",
+            "sync_creatives",
+            "activate_signal",
+            "get_signals",
+            "create_property_list",
+            "update_property_list",
+            "get_property_list",
+            "list_property_lists",
+            "delete_property_list",
+            "sync_accounts",
+            "get_account_financials",
+            "get_creative_delivery",
+            "sync_event_sources",
+            "sync_audiences",
+            "sync_catalogs",
+            "log_event",
+            "get_brand_identity",
+            "get_rights",
+            "acquire_rights"
+          ],
+          "enumDescriptions": {
+            "create_media_buy": "Media-buy domain: Create a new advertising campaign with one or more packages",
+            "update_media_buy": "Media-buy domain: Update campaign settings, package configuration, or delivery parameters",
+            "sync_creatives": "Media-buy domain: Sync creative assets to publisher's library with upsert semantics",
+            "activate_signal": "Signals domain: Activate an audience signal on a specific platform or account",
+            "get_signals": "Signals domain: Discover available audience signals based on natural language description",
+            "create_property_list": "Property domain: Create a new property list with filters and brand reference",
+            "update_property_list": "Property domain: Update an existing property list",
+            "get_property_list": "Property domain: Retrieve a property list with resolved properties",
+            "list_property_lists": "Property domain: List all accessible property lists",
+            "delete_property_list": "Property domain: Delete a property list",
+            "sync_accounts": "Account domain: Sync advertiser accounts with a seller using upsert semantics",
+            "get_account_financials": "Account domain: Query financial status of an operator-billed account (spend, credit, invoices)",
+            "get_creative_delivery": "Creative domain: Retrieve variant-level creative delivery data",
+            "sync_event_sources": "Media-buy domain: Configure event sources on an account with upsert semantics",
+            "sync_audiences": "Media-buy domain: Manage first-party CRM audiences on an account with delta upsert semantics",
+            "sync_catalogs": "Media-buy domain: Sync catalog feeds (products, inventory, stores, promotions, offerings) to a platform with approval workflow",
+            "log_event": "Media-buy domain: Send conversion or marketing events for attribution",
+            "get_brand_identity": "Brand domain: Retrieve brand identity data (logos, colors, tone, assets, voice config) from a brand agent",
+            "get_rights": "Brand domain: Search for licensable rights across a brand agent's roster with pricing",
+            "acquire_rights": "Brand domain: Acquire rights from a brand agent with contractual clearance and generation credentials"
+          },
+          "notes": [
+            "Task types map to specific AdCP task operations",
+            "Each task type belongs to the 'media-buy', 'signals', 'property', 'account', 'creative', or 'brand' domain",
+            "This enum is used in task management APIs (tasks/list, tasks/get) and webhook payloads",
+            "New task types require a minor version bump per semantic versioning"
+          ]
+        },
+        "task_types": {
+          "type": "array",
+          "description": "Filter by multiple task types",
+          "items": {
+            "title": "Task Type",
+            "description": "Valid AdCP task types across all domains. These represent the complete set of operations that can be tracked via the task management system.",
+            "type": "string",
+            "enum": [
+              "create_media_buy",
+              "update_media_buy",
+              "sync_creatives",
+              "activate_signal",
+              "get_signals",
+              "create_property_list",
+              "update_property_list",
+              "get_property_list",
+              "list_property_lists",
+              "delete_property_list",
+              "sync_accounts",
+              "get_account_financials",
+              "get_creative_delivery",
+              "sync_event_sources",
+              "sync_audiences",
+              "sync_catalogs",
+              "log_event",
+              "get_brand_identity",
+              "get_rights",
+              "acquire_rights"
+            ],
+            "enumDescriptions": {
+              "create_media_buy": "Media-buy domain: Create a new advertising campaign with one or more packages",
+              "update_media_buy": "Media-buy domain: Update campaign settings, package configuration, or delivery parameters",
+              "sync_creatives": "Media-buy domain: Sync creative assets to publisher's library with upsert semantics",
+              "activate_signal": "Signals domain: Activate an audience signal on a specific platform or account",
+              "get_signals": "Signals domain: Discover available audience signals based on natural language description",
+              "create_property_list": "Property domain: Create a new property list with filters and brand reference",
+              "update_property_list": "Property domain: Update an existing property list",
+              "get_property_list": "Property domain: Retrieve a property list with resolved properties",
+              "list_property_lists": "Property domain: List all accessible property lists",
+              "delete_property_list": "Property domain: Delete a property list",
+              "sync_accounts": "Account domain: Sync advertiser accounts with a seller using upsert semantics",
+              "get_account_financials": "Account domain: Query financial status of an operator-billed account (spend, credit, invoices)",
+              "get_creative_delivery": "Creative domain: Retrieve variant-level creative delivery data",
+              "sync_event_sources": "Media-buy domain: Configure event sources on an account with upsert semantics",
+              "sync_audiences": "Media-buy domain: Manage first-party CRM audiences on an account with delta upsert semantics",
+              "sync_catalogs": "Media-buy domain: Sync catalog feeds (products, inventory, stores, promotions, offerings) to a platform with approval workflow",
+              "log_event": "Media-buy domain: Send conversion or marketing events for attribution",
+              "get_brand_identity": "Brand domain: Retrieve brand identity data (logos, colors, tone, assets, voice config) from a brand agent",
+              "get_rights": "Brand domain: Search for licensable rights across a brand agent's roster with pricing",
+              "acquire_rights": "Brand domain: Acquire rights from a brand agent with contractual clearance and generation credentials"
+            },
+            "notes": [
+              "Task types map to specific AdCP task operations",
+              "Each task type belongs to the 'media-buy', 'signals', 'property', 'account', 'creative', or 'brand' domain",
+              "This enum is used in task management APIs (tasks/list, tasks/get) and webhook payloads",
+              "New task types require a minor version bump per semantic versioning"
+            ]
+          },
+          "minItems": 1
+        },
+        "created_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks created after this date (ISO 8601)"
+        },
+        "created_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks created before this date (ISO 8601)"
+        },
+        "updated_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks last updated after this date (ISO 8601)"
+        },
+        "updated_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks last updated before this date (ISO 8601)"
+        },
+        "task_ids": {
+          "type": "array",
+          "description": "Filter by specific task IDs",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "maxItems": 100
+        },
+        "context_contains": {
+          "type": "string",
+          "description": "Filter tasks where context contains this text (searches media_buy_id, signal_id, etc.)"
+        },
+        "has_webhook": {
+          "type": "boolean",
+          "description": "Filter tasks that have webhook configuration when true"
+        }
+      },
+      "additionalProperties": true
+    },
+    "sort": {
+      "type": "object",
+      "description": "Sorting parameters",
+      "properties": {
+        "field": {
+          "type": "string",
+          "enum": [
+            "created_at",
+            "updated_at",
+            "status",
+            "task_type",
+            "protocol"
+          ],
+          "default": "created_at",
+          "description": "Field to sort by"
+        },
+        "direction": {
+          "title": "Sort Direction",
+          "description": "Sort direction",
+          "type": "string",
+          "enum": [
+            "asc",
+            "desc"
+          ],
+          "default": "desc"
+        }
+      },
+      "additionalProperties": true
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "include_history": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include full conversation history for each task (may significantly increase response size)"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "List all pending tasks across protocols",
+      "data": {
+        "filters": {
+          "statuses": [
+            "submitted",
+            "working",
+            "input-required"
+          ]
+        }
+      }
+    },
+    {
+      "description": "Find media-buy tasks requiring attention",
+      "data": {
+        "filters": {
+          "protocol": "media-buy",
+          "statuses": [
+            "input-required",
+            "failed"
+          ]
+        },
+        "sort": {
+          "field": "updated_at",
+          "direction": "asc"
+        }
+      }
+    },
+    {
+      "description": "Recent signal operations",
+      "data": {
+        "filters": {
+          "protocol": "signals",
+          "created_after": "2025-01-01T00:00:00Z"
+        },
+        "pagination": {
+          "max_results": 20
+        }
+      }
+    },
+    {
+      "description": "State reconciliation for specific campaign",
+      "data": {
+        "filters": {
+          "context_contains": "nike_q1_2025"
+        },
+        "include_history": true
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.220Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/core/tasks-list-response.json b/schemas/cache/bundled/core/tasks-list-response.json
new file mode 100644
index 000000000..dead47bf1
--- /dev/null
+++ b/schemas/cache/bundled/core/tasks-list-response.json
@@ -0,0 +1,256 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks List Response",
+  "description": "Response from task listing query with filtered results and state reconciliation data across all AdCP domains",
+  "type": "object",
+  "properties": {
+    "query_summary": {
+      "type": "object",
+      "description": "Summary of the query that was executed",
+      "properties": {
+        "total_matching": {
+          "type": "integer",
+          "description": "Total number of tasks matching filters (across all pages)",
+          "minimum": 0
+        },
+        "returned": {
+          "type": "integer",
+          "description": "Number of tasks returned in this response",
+          "minimum": 0
+        },
+        "domain_breakdown": {
+          "type": "object",
+          "description": "Count of tasks by domain",
+          "properties": {
+            "media-buy": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of media-buy tasks in results"
+            },
+            "signals": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of signals tasks in results"
+            }
+          },
+          "additionalProperties": true
+        },
+        "status_breakdown": {
+          "type": "object",
+          "description": "Count of tasks by status",
+          "additionalProperties": {
+            "type": "integer",
+            "minimum": 0
+          }
+        },
+        "filters_applied": {
+          "type": "array",
+          "description": "List of filters that were applied to the query",
+          "items": {
+            "type": "string"
+          }
+        },
+        "sort_applied": {
+          "type": "object",
+          "description": "Sort order that was applied",
+          "properties": {
+            "field": {
+              "type": "string"
+            },
+            "direction": {
+              "type": "string",
+              "enum": [
+                "asc",
+                "desc"
+              ]
+            }
+          },
+          "required": [
+            "field",
+            "direction"
+          ],
+          "additionalProperties": true
+        }
+      },
+      "required": [],
+      "additionalProperties": true
+    },
+    "tasks": {
+      "type": "array",
+      "description": "Array of tasks matching the query criteria",
+      "items": {
+        "type": "object",
+        "properties": {
+          "task_id": {
+            "type": "string",
+            "description": "Unique identifier for this task"
+          },
+          "task_type": {
+            "title": "Task Type",
+            "description": "Type of AdCP operation",
+            "type": "string",
+            "enum": [
+              "create_media_buy",
+              "update_media_buy",
+              "sync_creatives",
+              "activate_signal",
+              "get_signals",
+              "create_property_list",
+              "update_property_list",
+              "get_property_list",
+              "list_property_lists",
+              "delete_property_list",
+              "sync_accounts",
+              "get_account_financials",
+              "get_creative_delivery",
+              "sync_event_sources",
+              "sync_audiences",
+              "sync_catalogs",
+              "log_event",
+              "get_brand_identity",
+              "get_rights",
+              "acquire_rights"
+            ],
+            "enumDescriptions": {
+              "create_media_buy": "Media-buy domain: Create a new advertising campaign with one or more packages",
+              "update_media_buy": "Media-buy domain: Update campaign settings, package configuration, or delivery parameters",
+              "sync_creatives": "Media-buy domain: Sync creative assets to publisher's library with upsert semantics",
+              "activate_signal": "Signals domain: Activate an audience signal on a specific platform or account",
+              "get_signals": "Signals domain: Discover available audience signals based on natural language description",
+              "create_property_list": "Property domain: Create a new property list with filters and brand reference",
+              "update_property_list": "Property domain: Update an existing property list",
+              "get_property_list": "Property domain: Retrieve a property list with resolved properties",
+              "list_property_lists": "Property domain: List all accessible property lists",
+              "delete_property_list": "Property domain: Delete a property list",
+              "sync_accounts": "Account domain: Sync advertiser accounts with a seller using upsert semantics",
+              "get_account_financials": "Account domain: Query financial status of an operator-billed account (spend, credit, invoices)",
+              "get_creative_delivery": "Creative domain: Retrieve variant-level creative delivery data",
+              "sync_event_sources": "Media-buy domain: Configure event sources on an account with upsert semantics",
+              "sync_audiences": "Media-buy domain: Manage first-party CRM audiences on an account with delta upsert semantics",
+              "sync_catalogs": "Media-buy domain: Sync catalog feeds (products, inventory, stores, promotions, offerings) to a platform with approval workflow",
+              "log_event": "Media-buy domain: Send conversion or marketing events for attribution",
+              "get_brand_identity": "Brand domain: Retrieve brand identity data (logos, colors, tone, assets, voice config) from a brand agent",
+              "get_rights": "Brand domain: Search for licensable rights across a brand agent's roster with pricing",
+              "acquire_rights": "Brand domain: Acquire rights from a brand agent with contractual clearance and generation credentials"
+            },
+            "notes": [
+              "Task types map to specific AdCP task operations",
+              "Each task type belongs to the 'media-buy', 'signals', 'property', 'account', 'creative', or 'brand' domain",
+              "This enum is used in task management APIs (tasks/list, tasks/get) and webhook payloads",
+              "New task types require a minor version bump per semantic versioning"
+            ]
+          },
+          "domain": {
+            "type": "string",
+            "description": "AdCP domain this task belongs to",
+            "enum": [
+              "media-buy",
+              "signals"
+            ]
+          },
+          "status": {
+            "title": "Task Status",
+            "description": "Current task status",
+            "type": "string",
+            "enum": [
+              "submitted",
+              "working",
+              "input-required",
+              "completed",
+              "canceled",
+              "failed",
+              "rejected",
+              "auth-required",
+              "unknown"
+            ],
+            "enumDescriptions": {
+              "submitted": "Task accepted and queued for long-running execution (hours to days). Client should poll with tasks/get or provide webhook_url at protocol level.",
+              "working": "Agent is actively processing the task, expect completion within 120 seconds",
+              "input-required": "Task is paused and waiting for input from the user (e.g., clarification, approval)",
+              "completed": "Task has been successfully completed",
+              "canceled": "Task was canceled by the user",
+              "failed": "Task failed due to an error during execution",
+              "rejected": "Task was rejected by the agent and was not started",
+              "auth-required": "Task requires authentication to proceed",
+              "unknown": "Task is in an unknown or indeterminate state"
+            }
+          },
+          "created_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the task was initially created (ISO 8601)"
+          },
+          "updated_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the task was last updated (ISO 8601)"
+          },
+          "completed_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the task completed (ISO 8601, only for completed/failed/canceled tasks)"
+          },
+          "has_webhook": {
+            "type": "boolean",
+            "description": "Whether this task has webhook configuration"
+          }
+        },
+        "required": [
+          "task_id",
+          "task_type",
+          "domain",
+          "status",
+          "created_at",
+          "updated_at"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "query_summary",
+    "tasks",
+    "pagination"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.221Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/get-creative-delivery-request.json b/schemas/cache/bundled/creative/get-creative-delivery-request.json
new file mode 100644
index 000000000..c03ea73ef
--- /dev/null
+++ b/schemas/cache/bundled/creative/get-creative-delivery-request.json
@@ -0,0 +1,198 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Creative Delivery Request",
+  "description": "Request parameters for retrieving creative delivery data including variant-level metrics from a creative agent. At least one scoping filter (media_buy_ids or creative_ids) is required.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account for routing and scoping. Limits results to creatives within this account.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "media_buy_ids": {
+      "type": "array",
+      "description": "Filter to specific media buys by publisher ID. If omitted, returns creative delivery across all matching media buys.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "creative_ids": {
+      "type": "array",
+      "description": "Filter to specific creatives by ID. If omitted, returns delivery for all creatives matching the other filters.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "start_date": {
+      "type": "string",
+      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+      "description": "Start date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone."
+    },
+    "end_date": {
+      "type": "string",
+      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+      "description": "End date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone."
+    },
+    "max_variants": {
+      "type": "integer",
+      "description": "Maximum number of variants to return per creative. When omitted, the agent returns all variants. Use this to limit response size for generative creatives that may produce large numbers of variants.",
+      "minimum": 1
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Pagination parameters for the creatives array in the response. Uses cursor-based pagination consistent with other list operations.",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "anyOf": [
+    {
+      "required": [
+        "media_buy_ids"
+      ]
+    },
+    {
+      "required": [
+        "creative_ids"
+      ]
+    }
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.221Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/get-creative-delivery-response.json b/schemas/cache/bundled/creative/get-creative-delivery-response.json
new file mode 100644
index 000000000..6861b0929
--- /dev/null
+++ b/schemas/cache/bundled/creative/get-creative-delivery-response.json
@@ -0,0 +1,7379 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Creative Delivery Response",
+  "description": "Response payload for get_creative_delivery task. Returns creative delivery data with variant-level breakdowns including manifests and metrics.",
+  "type": "object",
+  "properties": {
+    "account_id": {
+      "type": "string",
+      "description": "Account identifier. Present when the response spans or is scoped to a specific account."
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "Publisher's media buy identifier. Present when the request was scoped to a single media buy."
+    },
+    "currency": {
+      "type": "string",
+      "description": "ISO 4217 currency code for monetary values in this response (e.g., 'USD', 'EUR')",
+      "pattern": "^[A-Z]{3}$"
+    },
+    "reporting_period": {
+      "type": "object",
+      "description": "Date range for the report.",
+      "properties": {
+        "start": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 start timestamp"
+        },
+        "end": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 end timestamp"
+        },
+        "timezone": {
+          "type": "string",
+          "description": "IANA timezone identifier for the reporting period (e.g., 'America/New_York', 'UTC'). Platforms report in their native timezone."
+        }
+      },
+      "required": [
+        "start",
+        "end"
+      ],
+      "additionalProperties": true
+    },
+    "creatives": {
+      "type": "array",
+      "description": "Creative delivery data with variant breakdowns",
+      "items": {
+        "type": "object",
+        "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "Creative identifier"
+          },
+          "media_buy_id": {
+            "type": "string",
+            "description": "Publisher's media buy identifier for this creative. Present when the request spanned multiple media buys, so the buyer can correlate each creative to its media buy."
+          },
+          "format_id": {
+            "title": "Format ID",
+            "description": "Format of this creative",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "totals": {
+            "title": "Delivery Metrics",
+            "description": "Aggregate delivery metrics across all variants of this creative",
+            "type": "object",
+            "properties": {
+              "impressions": {
+                "type": "number",
+                "description": "Impressions delivered",
+                "minimum": 0
+              },
+              "spend": {
+                "type": "number",
+                "description": "Amount spent",
+                "minimum": 0
+              },
+              "clicks": {
+                "type": "number",
+                "description": "Total clicks",
+                "minimum": 0
+              },
+              "ctr": {
+                "type": "number",
+                "description": "Click-through rate (clicks/impressions)",
+                "minimum": 0,
+                "maximum": 1
+              },
+              "views": {
+                "type": "number",
+                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                "minimum": 0
+              },
+              "completed_views": {
+                "type": "number",
+                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                "minimum": 0
+              },
+              "completion_rate": {
+                "type": "number",
+                "description": "Completion rate (completed_views/impressions)",
+                "minimum": 0,
+                "maximum": 1
+              },
+              "conversions": {
+                "type": "number",
+                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                "minimum": 0
+              },
+              "conversion_value": {
+                "type": "number",
+                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                "minimum": 0
+              },
+              "roas": {
+                "type": "number",
+                "description": "Return on ad spend (conversion_value / spend)",
+                "minimum": 0
+              },
+              "cost_per_acquisition": {
+                "type": "number",
+                "description": "Cost per conversion (spend / conversions)",
+                "minimum": 0
+              },
+              "new_to_brand_rate": {
+                "type": "number",
+                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                "minimum": 0,
+                "maximum": 1
+              },
+              "leads": {
+                "type": "number",
+                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                "minimum": 0
+              },
+              "by_event_type": {
+                "type": "array",
+                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "event_type": {
+                      "title": "Event Type",
+                      "description": "The event type",
+                      "type": "string",
+                      "enum": [
+                        "page_view",
+                        "view_content",
+                        "select_content",
+                        "select_item",
+                        "search",
+                        "share",
+                        "add_to_cart",
+                        "remove_from_cart",
+                        "viewed_cart",
+                        "add_to_wishlist",
+                        "initiate_checkout",
+                        "add_payment_info",
+                        "purchase",
+                        "refund",
+                        "lead",
+                        "qualify_lead",
+                        "close_convert_lead",
+                        "disqualify_lead",
+                        "complete_registration",
+                        "subscribe",
+                        "start_trial",
+                        "app_install",
+                        "app_launch",
+                        "contact",
+                        "schedule",
+                        "donate",
+                        "submit_application",
+                        "custom"
+                      ],
+                      "enumDescriptions": {
+                        "page_view": "User viewed a page",
+                        "view_content": "User viewed specific content (product, article, etc.)",
+                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                        "select_item": "User selected a specific product or item from a list",
+                        "search": "User performed a search",
+                        "share": "User shared content via social or messaging",
+                        "add_to_cart": "User added an item to cart",
+                        "remove_from_cart": "User removed an item from cart",
+                        "viewed_cart": "User viewed their shopping cart",
+                        "add_to_wishlist": "User added an item to a wishlist",
+                        "initiate_checkout": "User started checkout process",
+                        "add_payment_info": "User added payment information",
+                        "purchase": "User completed a purchase",
+                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                        "lead": "User expressed interest (form submission, signup, etc.)",
+                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                        "complete_registration": "User completed account registration",
+                        "subscribe": "User subscribed to a service or newsletter",
+                        "start_trial": "User started a free trial",
+                        "app_install": "User installed an application",
+                        "app_launch": "User launched an application",
+                        "contact": "User initiated contact (call, message, etc.)",
+                        "schedule": "User scheduled an appointment or event",
+                        "donate": "User made a donation",
+                        "submit_application": "User submitted an application (loan, job, etc.)",
+                        "custom": "Custom event type (specify in custom_event_name)"
+                      }
+                    },
+                    "event_source_id": {
+                      "type": "string",
+                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                    },
+                    "count": {
+                      "type": "number",
+                      "description": "Number of events of this type",
+                      "minimum": 0
+                    },
+                    "value": {
+                      "type": "number",
+                      "description": "Total monetary value of events of this type",
+                      "minimum": 0
+                    }
+                  },
+                  "required": [
+                    "event_type",
+                    "count"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "grps": {
+                "type": "number",
+                "description": "Gross Rating Points delivered (for CPP)",
+                "minimum": 0
+              },
+              "reach": {
+                "type": "number",
+                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                "minimum": 0
+              },
+              "reach_unit": {
+                "allOf": [
+                  {
+                    "title": "Reach Unit",
+                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                    "type": "string",
+                    "enum": [
+                      "individuals",
+                      "households",
+                      "devices",
+                      "accounts",
+                      "cookies",
+                      "custom"
+                    ],
+                    "enumDescriptions": {
+                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                      "households": "Unique households or TV homes.",
+                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                      "cookies": "Unique browser cookies.",
+                      "custom": "Publisher-defined reach unit. Describe in ext."
+                    }
+                  }
+                ],
+                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+              },
+              "frequency": {
+                "type": "number",
+                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                "minimum": 0
+              },
+              "quartile_data": {
+                "type": "object",
+                "description": "Audio/video quartile completion data",
+                "properties": {
+                  "q1_views": {
+                    "type": "number",
+                    "description": "25% completion views",
+                    "minimum": 0
+                  },
+                  "q2_views": {
+                    "type": "number",
+                    "description": "50% completion views",
+                    "minimum": 0
+                  },
+                  "q3_views": {
+                    "type": "number",
+                    "description": "75% completion views",
+                    "minimum": 0
+                  },
+                  "q4_views": {
+                    "type": "number",
+                    "description": "100% completion views",
+                    "minimum": 0
+                  }
+                }
+              },
+              "dooh_metrics": {
+                "type": "object",
+                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                "properties": {
+                  "loop_plays": {
+                    "type": "integer",
+                    "description": "Number of times ad played in rotation",
+                    "minimum": 0
+                  },
+                  "screens_used": {
+                    "type": "integer",
+                    "description": "Number of unique screens displaying the ad",
+                    "minimum": 0
+                  },
+                  "screen_time_seconds": {
+                    "type": "integer",
+                    "description": "Total display time in seconds",
+                    "minimum": 0
+                  },
+                  "sov_achieved": {
+                    "type": "number",
+                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                    "minimum": 0,
+                    "maximum": 1
+                  },
+                  "calculation_notes": {
+                    "type": "string",
+                    "description": "Explanation of how DOOH impressions were calculated"
+                  },
+                  "venue_breakdown": {
+                    "type": "array",
+                    "description": "Per-venue performance breakdown",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "venue_id": {
+                          "type": "string",
+                          "description": "Venue identifier"
+                        },
+                        "venue_name": {
+                          "type": "string",
+                          "description": "Human-readable venue name"
+                        },
+                        "venue_type": {
+                          "type": "string",
+                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                        },
+                        "impressions": {
+                          "type": "integer",
+                          "description": "Impressions delivered at this venue",
+                          "minimum": 0
+                        },
+                        "loop_plays": {
+                          "type": "integer",
+                          "description": "Loop plays at this venue",
+                          "minimum": 0
+                        },
+                        "screens_used": {
+                          "type": "integer",
+                          "description": "Number of screens used at this venue",
+                          "minimum": 0
+                        }
+                      },
+                      "required": [
+                        "venue_id",
+                        "impressions"
+                      ],
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                "additionalProperties": true
+              },
+              "viewability": {
+                "type": "object",
+                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                "properties": {
+                  "measurable_impressions": {
+                    "type": "number",
+                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                    "minimum": 0
+                  },
+                  "viewable_impressions": {
+                    "type": "number",
+                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                    "minimum": 0
+                  },
+                  "viewable_rate": {
+                    "type": "number",
+                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                    "minimum": 0,
+                    "maximum": 1
+                  },
+                  "standard": {
+                    "title": "Viewability Standard",
+                    "description": "Viewability measurement standard applied to these metrics.",
+                    "type": "string",
+                    "enum": [
+                      "mrc",
+                      "groupm"
+                    ],
+                    "enumDescriptions": {
+                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                    }
+                  }
+                },
+                "additionalProperties": true
+              },
+              "engagements": {
+                "type": "number",
+                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                "minimum": 0
+              },
+              "follows": {
+                "type": "number",
+                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                "minimum": 0
+              },
+              "saves": {
+                "type": "number",
+                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                "minimum": 0
+              },
+              "profile_visits": {
+                "type": "number",
+                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                "minimum": 0
+              },
+              "engagement_rate": {
+                "type": "number",
+                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                "minimum": 0,
+                "maximum": 1
+              },
+              "cost_per_click": {
+                "type": "number",
+                "description": "Cost per click (spend / clicks)",
+                "minimum": 0
+              },
+              "by_action_source": {
+                "type": "array",
+                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "action_source": {
+                      "title": "Action Source",
+                      "description": "Where the conversion occurred",
+                      "type": "string",
+                      "enum": [
+                        "website",
+                        "app",
+                        "offline",
+                        "phone_call",
+                        "chat",
+                        "email",
+                        "in_store",
+                        "system_generated",
+                        "other"
+                      ],
+                      "enumDescriptions": {
+                        "website": "Event occurred on a website",
+                        "app": "Event occurred in a mobile or desktop app",
+                        "offline": "Event occurred offline (imported data)",
+                        "phone_call": "Event originated from a phone call",
+                        "chat": "Event originated from a chat conversation",
+                        "email": "Event originated from an email interaction",
+                        "in_store": "Event occurred at a physical retail location",
+                        "system_generated": "Event generated by an automated system",
+                        "other": "Other source (specify in ext)"
+                      }
+                    },
+                    "event_source_id": {
+                      "type": "string",
+                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                    },
+                    "count": {
+                      "type": "number",
+                      "description": "Number of conversions from this action source",
+                      "minimum": 0
+                    },
+                    "value": {
+                      "type": "number",
+                      "description": "Total monetary value of conversions from this action source",
+                      "minimum": 0
+                    }
+                  },
+                  "required": [
+                    "action_source",
+                    "count"
+                  ],
+                  "additionalProperties": true
+                }
+              }
+            },
+            "dependencies": {
+              "reach": [
+                "reach_unit"
+              ]
+            },
+            "additionalProperties": true
+          },
+          "variant_count": {
+            "type": "integer",
+            "description": "Total number of variants for this creative. When max_variants was specified in the request, this may exceed the number of items in the variants array.",
+            "minimum": 0
+          },
+          "variants": {
+            "type": "array",
+            "description": "Variant-level delivery breakdown. Each variant includes the rendered manifest and delivery metrics. For standard creatives, contains a single variant. For asset group optimization, one per combination. For generative creative, one per generated execution. Empty when a creative has no variants yet.",
+            "items": {
+              "title": "Creative Variant",
+              "description": "A specific execution variant of a creative with delivery metrics. For catalog-driven packages, each catalog item rendered as a distinct ad execution is a variant \u2014 the variant's manifest includes the catalog reference with the specific item rendered. For asset group optimization, represents one combination of assets the platform selected. For generative creative, represents a platform-generated variant. For standard creatives, maps 1:1 with the creative itself.",
+              "type": "object",
+              "allOf": [
+                {
+                  "title": "Delivery Metrics",
+                  "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                  "type": "object",
+                  "properties": {
+                    "impressions": {
+                      "type": "number",
+                      "description": "Impressions delivered",
+                      "minimum": 0
+                    },
+                    "spend": {
+                      "type": "number",
+                      "description": "Amount spent",
+                      "minimum": 0
+                    },
+                    "clicks": {
+                      "type": "number",
+                      "description": "Total clicks",
+                      "minimum": 0
+                    },
+                    "ctr": {
+                      "type": "number",
+                      "description": "Click-through rate (clicks/impressions)",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "views": {
+                      "type": "number",
+                      "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                      "minimum": 0
+                    },
+                    "completed_views": {
+                      "type": "number",
+                      "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                      "minimum": 0
+                    },
+                    "completion_rate": {
+                      "type": "number",
+                      "description": "Completion rate (completed_views/impressions)",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "conversions": {
+                      "type": "number",
+                      "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                      "minimum": 0
+                    },
+                    "conversion_value": {
+                      "type": "number",
+                      "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                      "minimum": 0
+                    },
+                    "roas": {
+                      "type": "number",
+                      "description": "Return on ad spend (conversion_value / spend)",
+                      "minimum": 0
+                    },
+                    "cost_per_acquisition": {
+                      "type": "number",
+                      "description": "Cost per conversion (spend / conversions)",
+                      "minimum": 0
+                    },
+                    "new_to_brand_rate": {
+                      "type": "number",
+                      "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "leads": {
+                      "type": "number",
+                      "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                      "minimum": 0
+                    },
+                    "by_event_type": {
+                      "type": "array",
+                      "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "event_type": {
+                            "title": "Event Type",
+                            "description": "The event type",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "event_source_id": {
+                            "type": "string",
+                            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                          },
+                          "count": {
+                            "type": "number",
+                            "description": "Number of events of this type",
+                            "minimum": 0
+                          },
+                          "value": {
+                            "type": "number",
+                            "description": "Total monetary value of events of this type",
+                            "minimum": 0
+                          }
+                        },
+                        "required": [
+                          "event_type",
+                          "count"
+                        ],
+                        "additionalProperties": true
+                      }
+                    },
+                    "grps": {
+                      "type": "number",
+                      "description": "Gross Rating Points delivered (for CPP)",
+                      "minimum": 0
+                    },
+                    "reach": {
+                      "type": "number",
+                      "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                      "minimum": 0
+                    },
+                    "reach_unit": {
+                      "allOf": [
+                        {
+                          "title": "Reach Unit",
+                          "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                          "type": "string",
+                          "enum": [
+                            "individuals",
+                            "households",
+                            "devices",
+                            "accounts",
+                            "cookies",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                            "households": "Unique households or TV homes.",
+                            "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                            "accounts": "Unique logged-in accounts (platform-specific identity).",
+                            "cookies": "Unique browser cookies.",
+                            "custom": "Publisher-defined reach unit. Describe in ext."
+                          }
+                        }
+                      ],
+                      "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                    },
+                    "frequency": {
+                      "type": "number",
+                      "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                      "minimum": 0
+                    },
+                    "quartile_data": {
+                      "type": "object",
+                      "description": "Audio/video quartile completion data",
+                      "properties": {
+                        "q1_views": {
+                          "type": "number",
+                          "description": "25% completion views",
+                          "minimum": 0
+                        },
+                        "q2_views": {
+                          "type": "number",
+                          "description": "50% completion views",
+                          "minimum": 0
+                        },
+                        "q3_views": {
+                          "type": "number",
+                          "description": "75% completion views",
+                          "minimum": 0
+                        },
+                        "q4_views": {
+                          "type": "number",
+                          "description": "100% completion views",
+                          "minimum": 0
+                        }
+                      }
+                    },
+                    "dooh_metrics": {
+                      "type": "object",
+                      "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                      "properties": {
+                        "loop_plays": {
+                          "type": "integer",
+                          "description": "Number of times ad played in rotation",
+                          "minimum": 0
+                        },
+                        "screens_used": {
+                          "type": "integer",
+                          "description": "Number of unique screens displaying the ad",
+                          "minimum": 0
+                        },
+                        "screen_time_seconds": {
+                          "type": "integer",
+                          "description": "Total display time in seconds",
+                          "minimum": 0
+                        },
+                        "sov_achieved": {
+                          "type": "number",
+                          "description": "Actual share of voice delivered (0.0 to 1.0)",
+                          "minimum": 0,
+                          "maximum": 1
+                        },
+                        "calculation_notes": {
+                          "type": "string",
+                          "description": "Explanation of how DOOH impressions were calculated"
+                        },
+                        "venue_breakdown": {
+                          "type": "array",
+                          "description": "Per-venue performance breakdown",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "venue_id": {
+                                "type": "string",
+                                "description": "Venue identifier"
+                              },
+                              "venue_name": {
+                                "type": "string",
+                                "description": "Human-readable venue name"
+                              },
+                              "venue_type": {
+                                "type": "string",
+                                "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                              },
+                              "impressions": {
+                                "type": "integer",
+                                "description": "Impressions delivered at this venue",
+                                "minimum": 0
+                              },
+                              "loop_plays": {
+                                "type": "integer",
+                                "description": "Loop plays at this venue",
+                                "minimum": 0
+                              },
+                              "screens_used": {
+                                "type": "integer",
+                                "description": "Number of screens used at this venue",
+                                "minimum": 0
+                              }
+                            },
+                            "required": [
+                              "venue_id",
+                              "impressions"
+                            ],
+                            "additionalProperties": true
+                          }
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "viewability": {
+                      "type": "object",
+                      "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                      "properties": {
+                        "measurable_impressions": {
+                          "type": "number",
+                          "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                          "minimum": 0
+                        },
+                        "viewable_impressions": {
+                          "type": "number",
+                          "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                          "minimum": 0
+                        },
+                        "viewable_rate": {
+                          "type": "number",
+                          "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                          "minimum": 0,
+                          "maximum": 1
+                        },
+                        "standard": {
+                          "title": "Viewability Standard",
+                          "description": "Viewability measurement standard applied to these metrics.",
+                          "type": "string",
+                          "enum": [
+                            "mrc",
+                            "groupm"
+                          ],
+                          "enumDescriptions": {
+                            "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                            "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                          }
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "engagements": {
+                      "type": "number",
+                      "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                      "minimum": 0
+                    },
+                    "follows": {
+                      "type": "number",
+                      "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                      "minimum": 0
+                    },
+                    "saves": {
+                      "type": "number",
+                      "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                      "minimum": 0
+                    },
+                    "profile_visits": {
+                      "type": "number",
+                      "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                      "minimum": 0
+                    },
+                    "engagement_rate": {
+                      "type": "number",
+                      "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "cost_per_click": {
+                      "type": "number",
+                      "description": "Cost per click (spend / clicks)",
+                      "minimum": 0
+                    },
+                    "by_action_source": {
+                      "type": "array",
+                      "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "action_source": {
+                            "title": "Action Source",
+                            "description": "Where the conversion occurred",
+                            "type": "string",
+                            "enum": [
+                              "website",
+                              "app",
+                              "offline",
+                              "phone_call",
+                              "chat",
+                              "email",
+                              "in_store",
+                              "system_generated",
+                              "other"
+                            ],
+                            "enumDescriptions": {
+                              "website": "Event occurred on a website",
+                              "app": "Event occurred in a mobile or desktop app",
+                              "offline": "Event occurred offline (imported data)",
+                              "phone_call": "Event originated from a phone call",
+                              "chat": "Event originated from a chat conversation",
+                              "email": "Event originated from an email interaction",
+                              "in_store": "Event occurred at a physical retail location",
+                              "system_generated": "Event generated by an automated system",
+                              "other": "Other source (specify in ext)"
+                            }
+                          },
+                          "event_source_id": {
+                            "type": "string",
+                            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                          },
+                          "count": {
+                            "type": "number",
+                            "description": "Number of conversions from this action source",
+                            "minimum": 0
+                          },
+                          "value": {
+                            "type": "number",
+                            "description": "Total monetary value of conversions from this action source",
+                            "minimum": 0
+                          }
+                        },
+                        "required": [
+                          "action_source",
+                          "count"
+                        ],
+                        "additionalProperties": true
+                      }
+                    }
+                  },
+                  "dependencies": {
+                    "reach": [
+                      "reach_unit"
+                    ]
+                  },
+                  "additionalProperties": true
+                },
+                {
+                  "properties": {
+                    "variant_id": {
+                      "type": "string",
+                      "description": "Platform-assigned identifier for this variant"
+                    },
+                    "manifest": {
+                      "title": "Creative Manifest",
+                      "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets. Contains format_id and the resolved assets (specific headline, image, video, etc. the platform selected or generated). For Tier 2, shows which asset combination was picked. For Tier 3, contains the generated assets which may differ entirely from the input brand identity. Pass to preview_creative to re-render.",
+                      "type": "object",
+                      "properties": {
+                        "format_id": {
+                          "title": "Format ID",
+                          "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+                          "type": "object",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                            },
+                            "id": {
+                              "type": "string",
+                              "pattern": "^[a-zA-Z0-9_-]+$",
+                              "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                            },
+                            "duration_ms": {
+                              "type": "number",
+                              "minimum": 1,
+                              "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                            }
+                          },
+                          "required": [
+                            "agent_url",
+                            "id"
+                          ],
+                          "additionalProperties": true,
+                          "dependencies": {
+                            "width": [
+                              "height"
+                            ],
+                            "height": [
+                              "width"
+                            ]
+                          }
+                        },
+                        "assets": {
+                          "type": "object",
+                          "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+                          "patternProperties": {
+                            "^[a-z0-9_]+$": {
+                              "anyOf": [
+                                {
+                                  "title": "Image Asset",
+                                  "description": "Image asset with URL and dimensions",
+                                  "type": "object",
+                                  "properties": {
+                                    "url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the image asset"
+                                    },
+                                    "width": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Width in pixels"
+                                    },
+                                    "height": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Height in pixels"
+                                    },
+                                    "format": {
+                                      "type": "string",
+                                      "description": "Image file format (jpg, png, gif, webp, etc.)"
+                                    },
+                                    "alt_text": {
+                                      "type": "string",
+                                      "description": "Alternative text for accessibility",
+                                      "x-accessibility": true
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "url",
+                                    "width",
+                                    "height"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "Video Asset",
+                                  "description": "Video asset with URL and technical specifications including audio track properties",
+                                  "type": "object",
+                                  "properties": {
+                                    "url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the video asset"
+                                    },
+                                    "width": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Width in pixels"
+                                    },
+                                    "height": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Height in pixels"
+                                    },
+                                    "duration_ms": {
+                                      "type": "integer",
+                                      "description": "Video duration in milliseconds",
+                                      "minimum": 1
+                                    },
+                                    "file_size_bytes": {
+                                      "type": "integer",
+                                      "description": "File size in bytes",
+                                      "minimum": 1
+                                    },
+                                    "container_format": {
+                                      "type": "string",
+                                      "description": "Video container format (mp4, webm, mov, etc.)"
+                                    },
+                                    "video_codec": {
+                                      "type": "string",
+                                      "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                                    },
+                                    "video_bitrate_kbps": {
+                                      "type": "integer",
+                                      "description": "Video stream bitrate in kilobits per second",
+                                      "minimum": 1
+                                    },
+                                    "frame_rate": {
+                                      "type": "string",
+                                      "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                                    },
+                                    "frame_rate_type": {
+                                      "type": "string",
+                                      "enum": [
+                                        "constant",
+                                        "variable"
+                                      ],
+                                      "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                                    },
+                                    "scan_type": {
+                                      "type": "string",
+                                      "enum": [
+                                        "progressive",
+                                        "interlaced"
+                                      ],
+                                      "description": "Scan type of the video"
+                                    },
+                                    "color_space": {
+                                      "type": "string",
+                                      "enum": [
+                                        "rec709",
+                                        "rec2020",
+                                        "rec2100",
+                                        "srgb",
+                                        "dci_p3"
+                                      ],
+                                      "description": "Color space of the video"
+                                    },
+                                    "hdr_format": {
+                                      "type": "string",
+                                      "enum": [
+                                        "sdr",
+                                        "hdr10",
+                                        "hdr10_plus",
+                                        "hlg",
+                                        "dolby_vision"
+                                      ],
+                                      "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                                    },
+                                    "chroma_subsampling": {
+                                      "type": "string",
+                                      "enum": [
+                                        "4:2:0",
+                                        "4:2:2",
+                                        "4:4:4"
+                                      ],
+                                      "description": "Chroma subsampling format"
+                                    },
+                                    "video_bit_depth": {
+                                      "type": "integer",
+                                      "enum": [
+                                        8,
+                                        10,
+                                        12
+                                      ],
+                                      "description": "Video bit depth"
+                                    },
+                                    "gop_interval_seconds": {
+                                      "type": "number",
+                                      "description": "GOP/keyframe interval in seconds"
+                                    },
+                                    "gop_type": {
+                                      "type": "string",
+                                      "enum": [
+                                        "closed",
+                                        "open"
+                                      ],
+                                      "description": "GOP structure type"
+                                    },
+                                    "moov_atom_position": {
+                                      "type": "string",
+                                      "enum": [
+                                        "start",
+                                        "end"
+                                      ],
+                                      "description": "Position of moov atom in MP4 container"
+                                    },
+                                    "has_audio": {
+                                      "type": "boolean",
+                                      "description": "Whether the video contains an audio track"
+                                    },
+                                    "audio_codec": {
+                                      "type": "string",
+                                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                                    },
+                                    "audio_sampling_rate_hz": {
+                                      "type": "integer",
+                                      "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                                    },
+                                    "audio_channels": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mono",
+                                        "stereo",
+                                        "5.1",
+                                        "7.1"
+                                      ],
+                                      "description": "Audio channel configuration"
+                                    },
+                                    "audio_bit_depth": {
+                                      "type": "integer",
+                                      "enum": [
+                                        16,
+                                        24,
+                                        32
+                                      ],
+                                      "description": "Audio bit depth"
+                                    },
+                                    "audio_bitrate_kbps": {
+                                      "type": "integer",
+                                      "description": "Audio bitrate in kilobits per second",
+                                      "minimum": 1
+                                    },
+                                    "audio_loudness_lufs": {
+                                      "type": "number",
+                                      "description": "Integrated loudness in LUFS"
+                                    },
+                                    "audio_true_peak_dbfs": {
+                                      "type": "number",
+                                      "description": "True peak level in dBFS"
+                                    },
+                                    "captions_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                      "x-accessibility": true
+                                    },
+                                    "transcript_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to text transcript of the video content",
+                                      "x-accessibility": true
+                                    },
+                                    "audio_description_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to audio description track for visually impaired users",
+                                      "x-accessibility": true
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "url",
+                                    "width",
+                                    "height"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "Audio Asset",
+                                  "description": "Audio asset with URL and technical specifications",
+                                  "type": "object",
+                                  "properties": {
+                                    "url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the audio asset"
+                                    },
+                                    "duration_ms": {
+                                      "type": "integer",
+                                      "description": "Audio duration in milliseconds",
+                                      "minimum": 0
+                                    },
+                                    "file_size_bytes": {
+                                      "type": "integer",
+                                      "description": "File size in bytes",
+                                      "minimum": 1
+                                    },
+                                    "container_format": {
+                                      "type": "string",
+                                      "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                                    },
+                                    "codec": {
+                                      "type": "string",
+                                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                                    },
+                                    "sampling_rate_hz": {
+                                      "type": "integer",
+                                      "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                                    },
+                                    "channels": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mono",
+                                        "stereo",
+                                        "5.1",
+                                        "7.1"
+                                      ],
+                                      "description": "Channel configuration"
+                                    },
+                                    "bit_depth": {
+                                      "type": "integer",
+                                      "enum": [
+                                        16,
+                                        24,
+                                        32
+                                      ],
+                                      "description": "Bit depth"
+                                    },
+                                    "bitrate_kbps": {
+                                      "type": "integer",
+                                      "description": "Bitrate in kilobits per second",
+                                      "minimum": 1
+                                    },
+                                    "loudness_lufs": {
+                                      "type": "number",
+                                      "description": "Integrated loudness in LUFS"
+                                    },
+                                    "true_peak_dbfs": {
+                                      "type": "number",
+                                      "description": "True peak level in dBFS"
+                                    },
+                                    "transcript_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to text transcript of the audio content",
+                                      "x-accessibility": true
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "VAST Asset",
+                                  "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                                  "oneOf": [
+                                    {
+                                      "type": "object",
+                                      "properties": {
+                                        "delivery_type": {
+                                          "type": "string",
+                                          "const": "url",
+                                          "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                                        },
+                                        "url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL endpoint that returns VAST XML"
+                                        },
+                                        "vast_version": {
+                                          "title": "VAST Version",
+                                          "description": "VAST specification version",
+                                          "type": "string",
+                                          "enum": [
+                                            "2.0",
+                                            "3.0",
+                                            "4.0",
+                                            "4.1",
+                                            "4.2"
+                                          ]
+                                        },
+                                        "vpaid_enabled": {
+                                          "type": "boolean",
+                                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                        },
+                                        "duration_ms": {
+                                          "type": "integer",
+                                          "description": "Expected video duration in milliseconds (if known)",
+                                          "minimum": 0
+                                        },
+                                        "tracking_events": {
+                                          "type": "array",
+                                          "items": {
+                                            "title": "VAST Tracking Event",
+                                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                            "type": "string",
+                                            "enum": [
+                                              "impression",
+                                              "creativeView",
+                                              "loaded",
+                                              "start",
+                                              "firstQuartile",
+                                              "midpoint",
+                                              "thirdQuartile",
+                                              "complete",
+                                              "mute",
+                                              "unmute",
+                                              "pause",
+                                              "resume",
+                                              "rewind",
+                                              "skip",
+                                              "playerExpand",
+                                              "playerCollapse",
+                                              "fullscreen",
+                                              "exitFullscreen",
+                                              "progress",
+                                              "notUsed",
+                                              "otherAdInteraction",
+                                              "interactiveStart",
+                                              "clickTracking",
+                                              "customClick",
+                                              "close",
+                                              "closeLinear",
+                                              "error",
+                                              "viewable",
+                                              "notViewable",
+                                              "viewUndetermined",
+                                              "measurableImpression",
+                                              "viewableImpression"
+                                            ]
+                                          },
+                                          "description": "Tracking events supported by this VAST tag"
+                                        },
+                                        "captions_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                          "x-accessibility": true
+                                        },
+                                        "audio_description_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to audio description track for visually impaired users",
+                                          "x-accessibility": true
+                                        },
+                                        "provenance": {
+                                          "title": "Provenance",
+                                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                          "type": "object",
+                                          "properties": {
+                                            "digital_source_type": {
+                                              "title": "Digital Source Type",
+                                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                              "type": "string",
+                                              "enum": [
+                                                "digital_capture",
+                                                "digital_creation",
+                                                "trained_algorithmic_media",
+                                                "composite_with_trained_algorithmic_media",
+                                                "algorithmic_media",
+                                                "composite_capture",
+                                                "composite_synthetic",
+                                                "human_edits",
+                                                "data_driven_media"
+                                              ],
+                                              "enumDescriptions": {
+                                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                                "composite_capture": "Multiple digital captures composited together without AI",
+                                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                              }
+                                            },
+                                            "ai_tool": {
+                                              "type": "object",
+                                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                              "properties": {
+                                                "name": {
+                                                  "type": "string",
+                                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                                },
+                                                "version": {
+                                                  "type": "string",
+                                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                                },
+                                                "provider": {
+                                                  "type": "string",
+                                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                                }
+                                              },
+                                              "required": [
+                                                "name"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "human_oversight": {
+                                              "type": "string",
+                                              "description": "Level of human involvement in the AI-assisted creation process",
+                                              "enum": [
+                                                "none",
+                                                "prompt_only",
+                                                "selected",
+                                                "edited",
+                                                "directed"
+                                              ],
+                                              "enumDescriptions": {
+                                                "none": "Fully automated with no human involvement in generation",
+                                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                                "selected": "Human selected from multiple AI-generated candidates",
+                                                "edited": "Human edited or refined AI-generated output",
+                                                "directed": "Human directed the creative process with AI as an assistive tool"
+                                              }
+                                            },
+                                            "declared_by": {
+                                              "type": "object",
+                                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                              "properties": {
+                                                "agent_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL of the agent or service that declared this provenance"
+                                                },
+                                                "role": {
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "creator",
+                                                    "advertiser",
+                                                    "agency",
+                                                    "platform",
+                                                    "tool"
+                                                  ],
+                                                  "description": "Role of the declaring party in the supply chain",
+                                                  "enumDescriptions": {
+                                                    "creator": "The party that created or generated the content",
+                                                    "advertiser": "The brand or advertiser that owns the content",
+                                                    "agency": "Agency acting on behalf of the advertiser",
+                                                    "platform": "Ad platform or publisher that processed the content",
+                                                    "tool": "Automated tool or service that attached provenance metadata"
+                                                  }
+                                                }
+                                              },
+                                              "required": [
+                                                "role"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "declared_at": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                            },
+                                            "created_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this content was created or generated (ISO 8601)"
+                                            },
+                                            "c2pa": {
+                                              "type": "object",
+                                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                              "properties": {
+                                                "manifest_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL to the C2PA manifest store for this content"
+                                                }
+                                              },
+                                              "required": [
+                                                "manifest_url"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "disclosure": {
+                                              "type": "object",
+                                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                              "properties": {
+                                                "required": {
+                                                  "type": "boolean",
+                                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                                },
+                                                "jurisdictions": {
+                                                  "type": "array",
+                                                  "description": "Jurisdictions where disclosure obligations apply",
+                                                  "items": {
+                                                    "type": "object",
+                                                    "properties": {
+                                                      "country": {
+                                                        "type": "string",
+                                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                      },
+                                                      "region": {
+                                                        "type": "string",
+                                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                      },
+                                                      "regulation": {
+                                                        "type": "string",
+                                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                      },
+                                                      "label_text": {
+                                                        "type": "string",
+                                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                      },
+                                                      "render_guidance": {
+                                                        "type": "object",
+                                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                        "minProperties": 1,
+                                                        "properties": {
+                                                          "persistence": {
+                                                            "title": "Disclosure Persistence",
+                                                            "description": "How long the disclosure must persist during content playback or display",
+                                                            "type": "string",
+                                                            "enum": [
+                                                              "continuous",
+                                                              "initial",
+                                                              "flexible"
+                                                            ],
+                                                            "enumDescriptions": {
+                                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                            }
+                                                          },
+                                                          "min_duration_ms": {
+                                                            "type": "integer",
+                                                            "minimum": 1,
+                                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                          },
+                                                          "positions": {
+                                                            "type": "array",
+                                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                            "items": {
+                                                              "title": "Disclosure Position",
+                                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                              "type": "string",
+                                                              "enum": [
+                                                                "prominent",
+                                                                "footer",
+                                                                "audio",
+                                                                "subtitle",
+                                                                "overlay",
+                                                                "end_card",
+                                                                "pre_roll",
+                                                                "companion"
+                                                              ]
+                                                            },
+                                                            "minItems": 1,
+                                                            "uniqueItems": true
+                                                          },
+                                                          "ext": {
+                                                            "title": "Extension Object",
+                                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                            "type": "object",
+                                                            "additionalProperties": true
+                                                          }
+                                                        },
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "required": [
+                                                      "country",
+                                                      "regulation"
+                                                    ],
+                                                    "additionalProperties": true
+                                                  },
+                                                  "minItems": 1
+                                                }
+                                              },
+                                              "required": [
+                                                "required"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "verification": {
+                                              "type": "array",
+                                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                              "minItems": 1,
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "verified_by": {
+                                                    "type": "string",
+                                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                                  },
+                                                  "verified_time": {
+                                                    "type": "string",
+                                                    "format": "date-time",
+                                                    "description": "When the verification was performed (ISO 8601)"
+                                                  },
+                                                  "result": {
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "authentic",
+                                                      "ai_generated",
+                                                      "ai_modified",
+                                                      "inconclusive"
+                                                    ],
+                                                    "description": "Verification outcome"
+                                                  },
+                                                  "confidence": {
+                                                    "type": "number",
+                                                    "minimum": 0,
+                                                    "maximum": 1,
+                                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                                  },
+                                                  "details_url": {
+                                                    "type": "string",
+                                                    "format": "uri",
+                                                    "description": "URL to the full verification report"
+                                                  }
+                                                },
+                                                "required": [
+                                                  "verified_by",
+                                                  "result"
+                                                ],
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "delivery_type",
+                                        "url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    {
+                                      "type": "object",
+                                      "properties": {
+                                        "delivery_type": {
+                                          "type": "string",
+                                          "const": "inline",
+                                          "description": "Discriminator indicating VAST is delivered as inline XML content"
+                                        },
+                                        "content": {
+                                          "type": "string",
+                                          "description": "Inline VAST XML content"
+                                        },
+                                        "vast_version": {
+                                          "title": "VAST Version",
+                                          "description": "VAST specification version",
+                                          "type": "string",
+                                          "enum": [
+                                            "2.0",
+                                            "3.0",
+                                            "4.0",
+                                            "4.1",
+                                            "4.2"
+                                          ]
+                                        },
+                                        "vpaid_enabled": {
+                                          "type": "boolean",
+                                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                        },
+                                        "duration_ms": {
+                                          "type": "integer",
+                                          "description": "Expected video duration in milliseconds (if known)",
+                                          "minimum": 0
+                                        },
+                                        "tracking_events": {
+                                          "type": "array",
+                                          "items": {
+                                            "title": "VAST Tracking Event",
+                                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                            "type": "string",
+                                            "enum": [
+                                              "impression",
+                                              "creativeView",
+                                              "loaded",
+                                              "start",
+                                              "firstQuartile",
+                                              "midpoint",
+                                              "thirdQuartile",
+                                              "complete",
+                                              "mute",
+                                              "unmute",
+                                              "pause",
+                                              "resume",
+                                              "rewind",
+                                              "skip",
+                                              "playerExpand",
+                                              "playerCollapse",
+                                              "fullscreen",
+                                              "exitFullscreen",
+                                              "progress",
+                                              "notUsed",
+                                              "otherAdInteraction",
+                                              "interactiveStart",
+                                              "clickTracking",
+                                              "customClick",
+                                              "close",
+                                              "closeLinear",
+                                              "error",
+                                              "viewable",
+                                              "notViewable",
+                                              "viewUndetermined",
+                                              "measurableImpression",
+                                              "viewableImpression"
+                                            ]
+                                          },
+                                          "description": "Tracking events supported by this VAST tag"
+                                        },
+                                        "captions_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                          "x-accessibility": true
+                                        },
+                                        "audio_description_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to audio description track for visually impaired users",
+                                          "x-accessibility": true
+                                        },
+                                        "provenance": {
+                                          "title": "Provenance",
+                                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                          "type": "object",
+                                          "properties": {
+                                            "digital_source_type": {
+                                              "title": "Digital Source Type",
+                                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                              "type": "string",
+                                              "enum": [
+                                                "digital_capture",
+                                                "digital_creation",
+                                                "trained_algorithmic_media",
+                                                "composite_with_trained_algorithmic_media",
+                                                "algorithmic_media",
+                                                "composite_capture",
+                                                "composite_synthetic",
+                                                "human_edits",
+                                                "data_driven_media"
+                                              ],
+                                              "enumDescriptions": {
+                                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                                "composite_capture": "Multiple digital captures composited together without AI",
+                                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                              }
+                                            },
+                                            "ai_tool": {
+                                              "type": "object",
+                                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                              "properties": {
+                                                "name": {
+                                                  "type": "string",
+                                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                                },
+                                                "version": {
+                                                  "type": "string",
+                                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                                },
+                                                "provider": {
+                                                  "type": "string",
+                                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                                }
+                                              },
+                                              "required": [
+                                                "name"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "human_oversight": {
+                                              "type": "string",
+                                              "description": "Level of human involvement in the AI-assisted creation process",
+                                              "enum": [
+                                                "none",
+                                                "prompt_only",
+                                                "selected",
+                                                "edited",
+                                                "directed"
+                                              ],
+                                              "enumDescriptions": {
+                                                "none": "Fully automated with no human involvement in generation",
+                                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                                "selected": "Human selected from multiple AI-generated candidates",
+                                                "edited": "Human edited or refined AI-generated output",
+                                                "directed": "Human directed the creative process with AI as an assistive tool"
+                                              }
+                                            },
+                                            "declared_by": {
+                                              "type": "object",
+                                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                              "properties": {
+                                                "agent_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL of the agent or service that declared this provenance"
+                                                },
+                                                "role": {
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "creator",
+                                                    "advertiser",
+                                                    "agency",
+                                                    "platform",
+                                                    "tool"
+                                                  ],
+                                                  "description": "Role of the declaring party in the supply chain",
+                                                  "enumDescriptions": {
+                                                    "creator": "The party that created or generated the content",
+                                                    "advertiser": "The brand or advertiser that owns the content",
+                                                    "agency": "Agency acting on behalf of the advertiser",
+                                                    "platform": "Ad platform or publisher that processed the content",
+                                                    "tool": "Automated tool or service that attached provenance metadata"
+                                                  }
+                                                }
+                                              },
+                                              "required": [
+                                                "role"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "declared_at": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                            },
+                                            "created_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this content was created or generated (ISO 8601)"
+                                            },
+                                            "c2pa": {
+                                              "type": "object",
+                                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                              "properties": {
+                                                "manifest_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL to the C2PA manifest store for this content"
+                                                }
+                                              },
+                                              "required": [
+                                                "manifest_url"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "disclosure": {
+                                              "type": "object",
+                                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                              "properties": {
+                                                "required": {
+                                                  "type": "boolean",
+                                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                                },
+                                                "jurisdictions": {
+                                                  "type": "array",
+                                                  "description": "Jurisdictions where disclosure obligations apply",
+                                                  "items": {
+                                                    "type": "object",
+                                                    "properties": {
+                                                      "country": {
+                                                        "type": "string",
+                                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                      },
+                                                      "region": {
+                                                        "type": "string",
+                                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                      },
+                                                      "regulation": {
+                                                        "type": "string",
+                                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                      },
+                                                      "label_text": {
+                                                        "type": "string",
+                                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                      },
+                                                      "render_guidance": {
+                                                        "type": "object",
+                                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                        "minProperties": 1,
+                                                        "properties": {
+                                                          "persistence": {
+                                                            "title": "Disclosure Persistence",
+                                                            "description": "How long the disclosure must persist during content playback or display",
+                                                            "type": "string",
+                                                            "enum": [
+                                                              "continuous",
+                                                              "initial",
+                                                              "flexible"
+                                                            ],
+                                                            "enumDescriptions": {
+                                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                            }
+                                                          },
+                                                          "min_duration_ms": {
+                                                            "type": "integer",
+                                                            "minimum": 1,
+                                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                          },
+                                                          "positions": {
+                                                            "type": "array",
+                                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                            "items": {
+                                                              "title": "Disclosure Position",
+                                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                              "type": "string",
+                                                              "enum": [
+                                                                "prominent",
+                                                                "footer",
+                                                                "audio",
+                                                                "subtitle",
+                                                                "overlay",
+                                                                "end_card",
+                                                                "pre_roll",
+                                                                "companion"
+                                                              ]
+                                                            },
+                                                            "minItems": 1,
+                                                            "uniqueItems": true
+                                                          },
+                                                          "ext": {
+                                                            "title": "Extension Object",
+                                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                            "type": "object",
+                                                            "additionalProperties": true
+                                                          }
+                                                        },
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "required": [
+                                                      "country",
+                                                      "regulation"
+                                                    ],
+                                                    "additionalProperties": true
+                                                  },
+                                                  "minItems": 1
+                                                }
+                                              },
+                                              "required": [
+                                                "required"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "verification": {
+                                              "type": "array",
+                                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                              "minItems": 1,
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "verified_by": {
+                                                    "type": "string",
+                                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                                  },
+                                                  "verified_time": {
+                                                    "type": "string",
+                                                    "format": "date-time",
+                                                    "description": "When the verification was performed (ISO 8601)"
+                                                  },
+                                                  "result": {
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "authentic",
+                                                      "ai_generated",
+                                                      "ai_modified",
+                                                      "inconclusive"
+                                                    ],
+                                                    "description": "Verification outcome"
+                                                  },
+                                                  "confidence": {
+                                                    "type": "number",
+                                                    "minimum": 0,
+                                                    "maximum": 1,
+                                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                                  },
+                                                  "details_url": {
+                                                    "type": "string",
+                                                    "format": "uri",
+                                                    "description": "URL to the full verification report"
+                                                  }
+                                                },
+                                                "required": [
+                                                  "verified_by",
+                                                  "result"
+                                                ],
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "delivery_type",
+                                        "content"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  ]
+                                },
+                                {
+                                  "title": "Text Asset",
+                                  "description": "Text content asset",
+                                  "type": "object",
+                                  "properties": {
+                                    "content": {
+                                      "type": "string",
+                                      "description": "Text content"
+                                    },
+                                    "language": {
+                                      "type": "string",
+                                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "content"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "URL Asset",
+                                  "description": "URL reference asset",
+                                  "type": "object",
+                                  "properties": {
+                                    "url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL reference"
+                                    },
+                                    "url_type": {
+                                      "title": "URL Asset Type",
+                                      "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                                      "type": "string",
+                                      "enum": [
+                                        "clickthrough",
+                                        "tracker_pixel",
+                                        "tracker_script"
+                                      ]
+                                    },
+                                    "description": {
+                                      "type": "string",
+                                      "description": "Description of what this URL points to"
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "HTML Asset",
+                                  "description": "HTML content asset",
+                                  "type": "object",
+                                  "properties": {
+                                    "content": {
+                                      "type": "string",
+                                      "description": "HTML content"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "HTML version (e.g., 'HTML5')"
+                                    },
+                                    "accessibility": {
+                                      "type": "object",
+                                      "description": "Self-declared accessibility properties for this opaque creative",
+                                      "x-accessibility": true,
+                                      "properties": {
+                                        "alt_text": {
+                                          "type": "string",
+                                          "description": "Text alternative describing the creative content"
+                                        },
+                                        "keyboard_navigable": {
+                                          "type": "boolean",
+                                          "description": "Whether the creative can be fully operated via keyboard"
+                                        },
+                                        "motion_control": {
+                                          "type": "boolean",
+                                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                        },
+                                        "screen_reader_tested": {
+                                          "type": "boolean",
+                                          "description": "Whether the creative has been tested with screen readers"
+                                        }
+                                      }
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "content"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "JavaScript Asset",
+                                  "description": "JavaScript code asset",
+                                  "type": "object",
+                                  "properties": {
+                                    "content": {
+                                      "type": "string",
+                                      "description": "JavaScript content"
+                                    },
+                                    "module_type": {
+                                      "title": "JavaScript Module Type",
+                                      "description": "JavaScript module type",
+                                      "type": "string",
+                                      "enum": [
+                                        "esm",
+                                        "commonjs",
+                                        "script"
+                                      ]
+                                    },
+                                    "accessibility": {
+                                      "type": "object",
+                                      "description": "Self-declared accessibility properties for this opaque creative",
+                                      "x-accessibility": true,
+                                      "properties": {
+                                        "alt_text": {
+                                          "type": "string",
+                                          "description": "Text alternative describing the creative content"
+                                        },
+                                        "keyboard_navigable": {
+                                          "type": "boolean",
+                                          "description": "Whether the creative can be fully operated via keyboard"
+                                        },
+                                        "motion_control": {
+                                          "type": "boolean",
+                                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                        },
+                                        "screen_reader_tested": {
+                                          "type": "boolean",
+                                          "description": "Whether the creative has been tested with screen readers"
+                                        }
+                                      }
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "content"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "Webhook Asset",
+                                  "description": "Webhook for server-side dynamic content rendering (DCO)",
+                                  "type": "object",
+                                  "properties": {
+                                    "url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "Webhook URL to call for dynamic content"
+                                    },
+                                    "method": {
+                                      "title": "HTTP Method",
+                                      "description": "HTTP method",
+                                      "type": "string",
+                                      "enum": [
+                                        "GET",
+                                        "POST"
+                                      ],
+                                      "default": "POST"
+                                    },
+                                    "timeout_ms": {
+                                      "type": "integer",
+                                      "minimum": 10,
+                                      "maximum": 5000,
+                                      "default": 500,
+                                      "description": "Maximum time to wait for response in milliseconds"
+                                    },
+                                    "supported_macros": {
+                                      "type": "array",
+                                      "items": {
+                                        "oneOf": [
+                                          {
+                                            "title": "Universal Macro",
+                                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                            "type": "string",
+                                            "enum": [
+                                              "MEDIA_BUY_ID",
+                                              "PACKAGE_ID",
+                                              "CREATIVE_ID",
+                                              "CACHEBUSTER",
+                                              "TIMESTAMP",
+                                              "CLICK_URL",
+                                              "GDPR",
+                                              "GDPR_CONSENT",
+                                              "US_PRIVACY",
+                                              "GPP_STRING",
+                                              "GPP_SID",
+                                              "IP_ADDRESS",
+                                              "LIMIT_AD_TRACKING",
+                                              "DEVICE_TYPE",
+                                              "OS",
+                                              "OS_VERSION",
+                                              "DEVICE_MAKE",
+                                              "DEVICE_MODEL",
+                                              "USER_AGENT",
+                                              "APP_BUNDLE",
+                                              "APP_NAME",
+                                              "COUNTRY",
+                                              "REGION",
+                                              "CITY",
+                                              "ZIP",
+                                              "DMA",
+                                              "LAT",
+                                              "LONG",
+                                              "DEVICE_ID",
+                                              "DEVICE_ID_TYPE",
+                                              "DOMAIN",
+                                              "PAGE_URL",
+                                              "REFERRER",
+                                              "KEYWORDS",
+                                              "PLACEMENT_ID",
+                                              "FOLD_POSITION",
+                                              "AD_WIDTH",
+                                              "AD_HEIGHT",
+                                              "VIDEO_ID",
+                                              "VIDEO_TITLE",
+                                              "VIDEO_DURATION",
+                                              "VIDEO_CATEGORY",
+                                              "CONTENT_GENRE",
+                                              "CONTENT_RATING",
+                                              "PLAYER_WIDTH",
+                                              "PLAYER_HEIGHT",
+                                              "POD_POSITION",
+                                              "POD_SIZE",
+                                              "AD_BREAK_ID",
+                                              "STATION_ID",
+                                              "COLLECTION_NAME",
+                                              "INSTALLMENT_ID",
+                                              "AUDIO_DURATION",
+                                              "TMPX",
+                                              "AXEM",
+                                              "CATALOG_ID",
+                                              "SKU",
+                                              "GTIN",
+                                              "OFFERING_ID",
+                                              "JOB_ID",
+                                              "HOTEL_ID",
+                                              "FLIGHT_ID",
+                                              "VEHICLE_ID",
+                                              "LISTING_ID",
+                                              "STORE_ID",
+                                              "PROGRAM_ID",
+                                              "DESTINATION_ID",
+                                              "CREATIVE_VARIANT_ID",
+                                              "APP_ITEM_ID"
+                                            ],
+                                            "enumDescriptions": {
+                                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                              "PACKAGE_ID": "AdCP package identifier",
+                                              "CREATIVE_ID": "AdCP creative identifier",
+                                              "CACHEBUSTER": "Random number to prevent caching",
+                                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                              "US_PRIVACY": "US Privacy (CCPA) string",
+                                              "GPP_STRING": "Global Privacy Platform consent string",
+                                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                              "OS_VERSION": "OS version number",
+                                              "DEVICE_MAKE": "Device manufacturer",
+                                              "DEVICE_MODEL": "Device model identifier",
+                                              "USER_AGENT": "Full user agent string",
+                                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                              "APP_NAME": "Human-readable app name",
+                                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                              "REGION": "State/province/region code",
+                                              "CITY": "City name",
+                                              "ZIP": "Postal code",
+                                              "DMA": "Nielsen DMA code (US TV markets)",
+                                              "LAT": "Latitude coordinate",
+                                              "LONG": "Longitude coordinate",
+                                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                              "DOMAIN": "Domain where ad is shown",
+                                              "PAGE_URL": "Full page URL (encoded)",
+                                              "REFERRER": "HTTP referrer URL",
+                                              "KEYWORDS": "Page keywords (comma-separated)",
+                                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                              "AD_WIDTH": "Ad slot width in pixels",
+                                              "AD_HEIGHT": "Ad slot height in pixels",
+                                              "VIDEO_ID": "Content video identifier",
+                                              "VIDEO_TITLE": "Content video title",
+                                              "VIDEO_DURATION": "Content duration in seconds",
+                                              "VIDEO_CATEGORY": "IAB content category",
+                                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                              "PLAYER_WIDTH": "Video player width in pixels",
+                                              "PLAYER_HEIGHT": "Video player height in pixels",
+                                              "POD_POSITION": "Position within ad break",
+                                              "POD_SIZE": "Total ads in the ad break",
+                                              "AD_BREAK_ID": "Unique ad break identifier",
+                                              "STATION_ID": "Radio station or podcast identifier",
+                                              "COLLECTION_NAME": "Program or collection name",
+                                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                              "AUDIO_DURATION": "Audio content duration in seconds",
+                                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                            }
+                                          },
+                                          {
+                                            "type": "string",
+                                            "description": "Custom or publisher-specific macro name"
+                                          }
+                                        ]
+                                      },
+                                      "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                                    },
+                                    "required_macros": {
+                                      "type": "array",
+                                      "items": {
+                                        "oneOf": [
+                                          {
+                                            "title": "Universal Macro",
+                                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                            "type": "string",
+                                            "enum": [
+                                              "MEDIA_BUY_ID",
+                                              "PACKAGE_ID",
+                                              "CREATIVE_ID",
+                                              "CACHEBUSTER",
+                                              "TIMESTAMP",
+                                              "CLICK_URL",
+                                              "GDPR",
+                                              "GDPR_CONSENT",
+                                              "US_PRIVACY",
+                                              "GPP_STRING",
+                                              "GPP_SID",
+                                              "IP_ADDRESS",
+                                              "LIMIT_AD_TRACKING",
+                                              "DEVICE_TYPE",
+                                              "OS",
+                                              "OS_VERSION",
+                                              "DEVICE_MAKE",
+                                              "DEVICE_MODEL",
+                                              "USER_AGENT",
+                                              "APP_BUNDLE",
+                                              "APP_NAME",
+                                              "COUNTRY",
+                                              "REGION",
+                                              "CITY",
+                                              "ZIP",
+                                              "DMA",
+                                              "LAT",
+                                              "LONG",
+                                              "DEVICE_ID",
+                                              "DEVICE_ID_TYPE",
+                                              "DOMAIN",
+                                              "PAGE_URL",
+                                              "REFERRER",
+                                              "KEYWORDS",
+                                              "PLACEMENT_ID",
+                                              "FOLD_POSITION",
+                                              "AD_WIDTH",
+                                              "AD_HEIGHT",
+                                              "VIDEO_ID",
+                                              "VIDEO_TITLE",
+                                              "VIDEO_DURATION",
+                                              "VIDEO_CATEGORY",
+                                              "CONTENT_GENRE",
+                                              "CONTENT_RATING",
+                                              "PLAYER_WIDTH",
+                                              "PLAYER_HEIGHT",
+                                              "POD_POSITION",
+                                              "POD_SIZE",
+                                              "AD_BREAK_ID",
+                                              "STATION_ID",
+                                              "COLLECTION_NAME",
+                                              "INSTALLMENT_ID",
+                                              "AUDIO_DURATION",
+                                              "TMPX",
+                                              "AXEM",
+                                              "CATALOG_ID",
+                                              "SKU",
+                                              "GTIN",
+                                              "OFFERING_ID",
+                                              "JOB_ID",
+                                              "HOTEL_ID",
+                                              "FLIGHT_ID",
+                                              "VEHICLE_ID",
+                                              "LISTING_ID",
+                                              "STORE_ID",
+                                              "PROGRAM_ID",
+                                              "DESTINATION_ID",
+                                              "CREATIVE_VARIANT_ID",
+                                              "APP_ITEM_ID"
+                                            ],
+                                            "enumDescriptions": {
+                                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                              "PACKAGE_ID": "AdCP package identifier",
+                                              "CREATIVE_ID": "AdCP creative identifier",
+                                              "CACHEBUSTER": "Random number to prevent caching",
+                                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                              "US_PRIVACY": "US Privacy (CCPA) string",
+                                              "GPP_STRING": "Global Privacy Platform consent string",
+                                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                              "OS_VERSION": "OS version number",
+                                              "DEVICE_MAKE": "Device manufacturer",
+                                              "DEVICE_MODEL": "Device model identifier",
+                                              "USER_AGENT": "Full user agent string",
+                                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                              "APP_NAME": "Human-readable app name",
+                                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                              "REGION": "State/province/region code",
+                                              "CITY": "City name",
+                                              "ZIP": "Postal code",
+                                              "DMA": "Nielsen DMA code (US TV markets)",
+                                              "LAT": "Latitude coordinate",
+                                              "LONG": "Longitude coordinate",
+                                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                              "DOMAIN": "Domain where ad is shown",
+                                              "PAGE_URL": "Full page URL (encoded)",
+                                              "REFERRER": "HTTP referrer URL",
+                                              "KEYWORDS": "Page keywords (comma-separated)",
+                                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                              "AD_WIDTH": "Ad slot width in pixels",
+                                              "AD_HEIGHT": "Ad slot height in pixels",
+                                              "VIDEO_ID": "Content video identifier",
+                                              "VIDEO_TITLE": "Content video title",
+                                              "VIDEO_DURATION": "Content duration in seconds",
+                                              "VIDEO_CATEGORY": "IAB content category",
+                                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                              "PLAYER_WIDTH": "Video player width in pixels",
+                                              "PLAYER_HEIGHT": "Video player height in pixels",
+                                              "POD_POSITION": "Position within ad break",
+                                              "POD_SIZE": "Total ads in the ad break",
+                                              "AD_BREAK_ID": "Unique ad break identifier",
+                                              "STATION_ID": "Radio station or podcast identifier",
+                                              "COLLECTION_NAME": "Program or collection name",
+                                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                              "AUDIO_DURATION": "Audio content duration in seconds",
+                                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                            }
+                                          },
+                                          {
+                                            "type": "string",
+                                            "description": "Custom or publisher-specific macro name"
+                                          }
+                                        ]
+                                      },
+                                      "description": "Universal macros that must be provided for webhook to function"
+                                    },
+                                    "response_type": {
+                                      "title": "Webhook Response Type",
+                                      "description": "Expected content type of webhook response",
+                                      "type": "string",
+                                      "enum": [
+                                        "html",
+                                        "json",
+                                        "xml",
+                                        "javascript"
+                                      ]
+                                    },
+                                    "security": {
+                                      "type": "object",
+                                      "description": "Security configuration for webhook calls",
+                                      "properties": {
+                                        "method": {
+                                          "title": "Webhook Security Method",
+                                          "description": "Authentication method",
+                                          "type": "string",
+                                          "enum": [
+                                            "hmac_sha256",
+                                            "api_key",
+                                            "none"
+                                          ]
+                                        },
+                                        "hmac_header": {
+                                          "type": "string",
+                                          "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                                        },
+                                        "api_key_header": {
+                                          "type": "string",
+                                          "description": "Header name for API key (e.g., 'X-API-Key')"
+                                        }
+                                      },
+                                      "required": [
+                                        "method"
+                                      ]
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "url",
+                                    "response_type",
+                                    "security"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "CSS Asset",
+                                  "description": "CSS stylesheet asset",
+                                  "type": "object",
+                                  "properties": {
+                                    "content": {
+                                      "type": "string",
+                                      "description": "CSS content"
+                                    },
+                                    "media": {
+                                      "type": "string",
+                                      "description": "CSS media query context (e.g., 'screen', 'print')"
+                                    },
+                                    "provenance": {
+                                      "title": "Provenance",
+                                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                      "type": "object",
+                                      "properties": {
+                                        "digital_source_type": {
+                                          "title": "Digital Source Type",
+                                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                          "type": "string",
+                                          "enum": [
+                                            "digital_capture",
+                                            "digital_creation",
+                                            "trained_algorithmic_media",
+                                            "composite_with_trained_algorithmic_media",
+                                            "algorithmic_media",
+                                            "composite_capture",
+                                            "composite_synthetic",
+                                            "human_edits",
+                                            "data_driven_media"
+                                          ],
+                                          "enumDescriptions": {
+                                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                            "composite_capture": "Multiple digital captures composited together without AI",
+                                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                          }
+                                        },
+                                        "ai_tool": {
+                                          "type": "object",
+                                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                          "properties": {
+                                            "name": {
+                                              "type": "string",
+                                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                            },
+                                            "version": {
+                                              "type": "string",
+                                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                            },
+                                            "provider": {
+                                              "type": "string",
+                                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                            }
+                                          },
+                                          "required": [
+                                            "name"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "human_oversight": {
+                                          "type": "string",
+                                          "description": "Level of human involvement in the AI-assisted creation process",
+                                          "enum": [
+                                            "none",
+                                            "prompt_only",
+                                            "selected",
+                                            "edited",
+                                            "directed"
+                                          ],
+                                          "enumDescriptions": {
+                                            "none": "Fully automated with no human involvement in generation",
+                                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                            "selected": "Human selected from multiple AI-generated candidates",
+                                            "edited": "Human edited or refined AI-generated output",
+                                            "directed": "Human directed the creative process with AI as an assistive tool"
+                                          }
+                                        },
+                                        "declared_by": {
+                                          "type": "object",
+                                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                          "properties": {
+                                            "agent_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL of the agent or service that declared this provenance"
+                                            },
+                                            "role": {
+                                              "type": "string",
+                                              "enum": [
+                                                "creator",
+                                                "advertiser",
+                                                "agency",
+                                                "platform",
+                                                "tool"
+                                              ],
+                                              "description": "Role of the declaring party in the supply chain",
+                                              "enumDescriptions": {
+                                                "creator": "The party that created or generated the content",
+                                                "advertiser": "The brand or advertiser that owns the content",
+                                                "agency": "Agency acting on behalf of the advertiser",
+                                                "platform": "Ad platform or publisher that processed the content",
+                                                "tool": "Automated tool or service that attached provenance metadata"
+                                              }
+                                            }
+                                          },
+                                          "required": [
+                                            "role"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "declared_at": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                        },
+                                        "created_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When this content was created or generated (ISO 8601)"
+                                        },
+                                        "c2pa": {
+                                          "type": "object",
+                                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                          "properties": {
+                                            "manifest_url": {
+                                              "type": "string",
+                                              "format": "uri",
+                                              "description": "URL to the C2PA manifest store for this content"
+                                            }
+                                          },
+                                          "required": [
+                                            "manifest_url"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "disclosure": {
+                                          "type": "object",
+                                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                          "properties": {
+                                            "required": {
+                                              "type": "boolean",
+                                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                            },
+                                            "jurisdictions": {
+                                              "type": "array",
+                                              "description": "Jurisdictions where disclosure obligations apply",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "country": {
+                                                    "type": "string",
+                                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                  },
+                                                  "region": {
+                                                    "type": "string",
+                                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                  },
+                                                  "label_text": {
+                                                    "type": "string",
+                                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                  },
+                                                  "render_guidance": {
+                                                    "type": "object",
+                                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                    "minProperties": 1,
+                                                    "properties": {
+                                                      "persistence": {
+                                                        "title": "Disclosure Persistence",
+                                                        "description": "How long the disclosure must persist during content playback or display",
+                                                        "type": "string",
+                                                        "enum": [
+                                                          "continuous",
+                                                          "initial",
+                                                          "flexible"
+                                                        ],
+                                                        "enumDescriptions": {
+                                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                        }
+                                                      },
+                                                      "min_duration_ms": {
+                                                        "type": "integer",
+                                                        "minimum": 1,
+                                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                      },
+                                                      "positions": {
+                                                        "type": "array",
+                                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                        "items": {
+                                                          "title": "Disclosure Position",
+                                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                          "type": "string",
+                                                          "enum": [
+                                                            "prominent",
+                                                            "footer",
+                                                            "audio",
+                                                            "subtitle",
+                                                            "overlay",
+                                                            "end_card",
+                                                            "pre_roll",
+                                                            "companion"
+                                                          ]
+                                                        },
+                                                        "minItems": 1,
+                                                        "uniqueItems": true
+                                                      },
+                                                      "ext": {
+                                                        "title": "Extension Object",
+                                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                        "type": "object",
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "required": [
+                                                  "country",
+                                                  "regulation"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "required": [
+                                            "required"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "verification": {
+                                          "type": "array",
+                                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                          "minItems": 1,
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "verified_by": {
+                                                "type": "string",
+                                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                              },
+                                              "verified_time": {
+                                                "type": "string",
+                                                "format": "date-time",
+                                                "description": "When the verification was performed (ISO 8601)"
+                                              },
+                                              "result": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "authentic",
+                                                  "ai_generated",
+                                                  "ai_modified",
+                                                  "inconclusive"
+                                                ],
+                                                "description": "Verification outcome"
+                                              },
+                                              "confidence": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "maximum": 1,
+                                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                              },
+                                              "details_url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the full verification report"
+                                              }
+                                            },
+                                            "required": [
+                                              "verified_by",
+                                              "result"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "content"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "DAAST Asset",
+                                  "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                                  "oneOf": [
+                                    {
+                                      "type": "object",
+                                      "properties": {
+                                        "delivery_type": {
+                                          "type": "string",
+                                          "const": "url",
+                                          "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                                        },
+                                        "url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL endpoint that returns DAAST XML"
+                                        },
+                                        "daast_version": {
+                                          "title": "DAAST Version",
+                                          "description": "DAAST specification version",
+                                          "type": "string",
+                                          "enum": [
+                                            "1.0",
+                                            "1.1"
+                                          ]
+                                        },
+                                        "duration_ms": {
+                                          "type": "integer",
+                                          "description": "Expected audio duration in milliseconds (if known)",
+                                          "minimum": 0
+                                        },
+                                        "tracking_events": {
+                                          "type": "array",
+                                          "items": {
+                                            "title": "DAAST Tracking Event",
+                                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                            "type": "string",
+                                            "enum": [
+                                              "impression",
+                                              "creativeView",
+                                              "loaded",
+                                              "start",
+                                              "firstQuartile",
+                                              "midpoint",
+                                              "thirdQuartile",
+                                              "complete",
+                                              "mute",
+                                              "unmute",
+                                              "pause",
+                                              "resume",
+                                              "skip",
+                                              "progress",
+                                              "clickTracking",
+                                              "customClick",
+                                              "close",
+                                              "error",
+                                              "viewable",
+                                              "notViewable",
+                                              "viewUndetermined",
+                                              "measurableImpression",
+                                              "viewableImpression"
+                                            ]
+                                          },
+                                          "description": "Tracking events supported by this DAAST tag"
+                                        },
+                                        "companion_ads": {
+                                          "type": "boolean",
+                                          "description": "Whether companion display ads are included"
+                                        },
+                                        "transcript_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to text transcript of the audio content",
+                                          "x-accessibility": true
+                                        },
+                                        "provenance": {
+                                          "title": "Provenance",
+                                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                          "type": "object",
+                                          "properties": {
+                                            "digital_source_type": {
+                                              "title": "Digital Source Type",
+                                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                              "type": "string",
+                                              "enum": [
+                                                "digital_capture",
+                                                "digital_creation",
+                                                "trained_algorithmic_media",
+                                                "composite_with_trained_algorithmic_media",
+                                                "algorithmic_media",
+                                                "composite_capture",
+                                                "composite_synthetic",
+                                                "human_edits",
+                                                "data_driven_media"
+                                              ],
+                                              "enumDescriptions": {
+                                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                                "composite_capture": "Multiple digital captures composited together without AI",
+                                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                              }
+                                            },
+                                            "ai_tool": {
+                                              "type": "object",
+                                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                              "properties": {
+                                                "name": {
+                                                  "type": "string",
+                                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                                },
+                                                "version": {
+                                                  "type": "string",
+                                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                                },
+                                                "provider": {
+                                                  "type": "string",
+                                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                                }
+                                              },
+                                              "required": [
+                                                "name"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "human_oversight": {
+                                              "type": "string",
+                                              "description": "Level of human involvement in the AI-assisted creation process",
+                                              "enum": [
+                                                "none",
+                                                "prompt_only",
+                                                "selected",
+                                                "edited",
+                                                "directed"
+                                              ],
+                                              "enumDescriptions": {
+                                                "none": "Fully automated with no human involvement in generation",
+                                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                                "selected": "Human selected from multiple AI-generated candidates",
+                                                "edited": "Human edited or refined AI-generated output",
+                                                "directed": "Human directed the creative process with AI as an assistive tool"
+                                              }
+                                            },
+                                            "declared_by": {
+                                              "type": "object",
+                                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                              "properties": {
+                                                "agent_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL of the agent or service that declared this provenance"
+                                                },
+                                                "role": {
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "creator",
+                                                    "advertiser",
+                                                    "agency",
+                                                    "platform",
+                                                    "tool"
+                                                  ],
+                                                  "description": "Role of the declaring party in the supply chain",
+                                                  "enumDescriptions": {
+                                                    "creator": "The party that created or generated the content",
+                                                    "advertiser": "The brand or advertiser that owns the content",
+                                                    "agency": "Agency acting on behalf of the advertiser",
+                                                    "platform": "Ad platform or publisher that processed the content",
+                                                    "tool": "Automated tool or service that attached provenance metadata"
+                                                  }
+                                                }
+                                              },
+                                              "required": [
+                                                "role"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "declared_at": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                            },
+                                            "created_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this content was created or generated (ISO 8601)"
+                                            },
+                                            "c2pa": {
+                                              "type": "object",
+                                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                              "properties": {
+                                                "manifest_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL to the C2PA manifest store for this content"
+                                                }
+                                              },
+                                              "required": [
+                                                "manifest_url"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "disclosure": {
+                                              "type": "object",
+                                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                              "properties": {
+                                                "required": {
+                                                  "type": "boolean",
+                                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                                },
+                                                "jurisdictions": {
+                                                  "type": "array",
+                                                  "description": "Jurisdictions where disclosure obligations apply",
+                                                  "items": {
+                                                    "type": "object",
+                                                    "properties": {
+                                                      "country": {
+                                                        "type": "string",
+                                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                      },
+                                                      "region": {
+                                                        "type": "string",
+                                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                      },
+                                                      "regulation": {
+                                                        "type": "string",
+                                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                      },
+                                                      "label_text": {
+                                                        "type": "string",
+                                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                      },
+                                                      "render_guidance": {
+                                                        "type": "object",
+                                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                        "minProperties": 1,
+                                                        "properties": {
+                                                          "persistence": {
+                                                            "title": "Disclosure Persistence",
+                                                            "description": "How long the disclosure must persist during content playback or display",
+                                                            "type": "string",
+                                                            "enum": [
+                                                              "continuous",
+                                                              "initial",
+                                                              "flexible"
+                                                            ],
+                                                            "enumDescriptions": {
+                                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                            }
+                                                          },
+                                                          "min_duration_ms": {
+                                                            "type": "integer",
+                                                            "minimum": 1,
+                                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                          },
+                                                          "positions": {
+                                                            "type": "array",
+                                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                            "items": {
+                                                              "title": "Disclosure Position",
+                                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                              "type": "string",
+                                                              "enum": [
+                                                                "prominent",
+                                                                "footer",
+                                                                "audio",
+                                                                "subtitle",
+                                                                "overlay",
+                                                                "end_card",
+                                                                "pre_roll",
+                                                                "companion"
+                                                              ]
+                                                            },
+                                                            "minItems": 1,
+                                                            "uniqueItems": true
+                                                          },
+                                                          "ext": {
+                                                            "title": "Extension Object",
+                                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                            "type": "object",
+                                                            "additionalProperties": true
+                                                          }
+                                                        },
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "required": [
+                                                      "country",
+                                                      "regulation"
+                                                    ],
+                                                    "additionalProperties": true
+                                                  },
+                                                  "minItems": 1
+                                                }
+                                              },
+                                              "required": [
+                                                "required"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "verification": {
+                                              "type": "array",
+                                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                              "minItems": 1,
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "verified_by": {
+                                                    "type": "string",
+                                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                                  },
+                                                  "verified_time": {
+                                                    "type": "string",
+                                                    "format": "date-time",
+                                                    "description": "When the verification was performed (ISO 8601)"
+                                                  },
+                                                  "result": {
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "authentic",
+                                                      "ai_generated",
+                                                      "ai_modified",
+                                                      "inconclusive"
+                                                    ],
+                                                    "description": "Verification outcome"
+                                                  },
+                                                  "confidence": {
+                                                    "type": "number",
+                                                    "minimum": 0,
+                                                    "maximum": 1,
+                                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                                  },
+                                                  "details_url": {
+                                                    "type": "string",
+                                                    "format": "uri",
+                                                    "description": "URL to the full verification report"
+                                                  }
+                                                },
+                                                "required": [
+                                                  "verified_by",
+                                                  "result"
+                                                ],
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "delivery_type",
+                                        "url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    {
+                                      "type": "object",
+                                      "properties": {
+                                        "delivery_type": {
+                                          "type": "string",
+                                          "const": "inline",
+                                          "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                                        },
+                                        "content": {
+                                          "type": "string",
+                                          "description": "Inline DAAST XML content"
+                                        },
+                                        "daast_version": {
+                                          "title": "DAAST Version",
+                                          "description": "DAAST specification version",
+                                          "type": "string",
+                                          "enum": [
+                                            "1.0",
+                                            "1.1"
+                                          ]
+                                        },
+                                        "duration_ms": {
+                                          "type": "integer",
+                                          "description": "Expected audio duration in milliseconds (if known)",
+                                          "minimum": 0
+                                        },
+                                        "tracking_events": {
+                                          "type": "array",
+                                          "items": {
+                                            "title": "DAAST Tracking Event",
+                                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                            "type": "string",
+                                            "enum": [
+                                              "impression",
+                                              "creativeView",
+                                              "loaded",
+                                              "start",
+                                              "firstQuartile",
+                                              "midpoint",
+                                              "thirdQuartile",
+                                              "complete",
+                                              "mute",
+                                              "unmute",
+                                              "pause",
+                                              "resume",
+                                              "skip",
+                                              "progress",
+                                              "clickTracking",
+                                              "customClick",
+                                              "close",
+                                              "error",
+                                              "viewable",
+                                              "notViewable",
+                                              "viewUndetermined",
+                                              "measurableImpression",
+                                              "viewableImpression"
+                                            ]
+                                          },
+                                          "description": "Tracking events supported by this DAAST tag"
+                                        },
+                                        "companion_ads": {
+                                          "type": "boolean",
+                                          "description": "Whether companion display ads are included"
+                                        },
+                                        "transcript_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to text transcript of the audio content",
+                                          "x-accessibility": true
+                                        },
+                                        "provenance": {
+                                          "title": "Provenance",
+                                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                          "type": "object",
+                                          "properties": {
+                                            "digital_source_type": {
+                                              "title": "Digital Source Type",
+                                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                              "type": "string",
+                                              "enum": [
+                                                "digital_capture",
+                                                "digital_creation",
+                                                "trained_algorithmic_media",
+                                                "composite_with_trained_algorithmic_media",
+                                                "algorithmic_media",
+                                                "composite_capture",
+                                                "composite_synthetic",
+                                                "human_edits",
+                                                "data_driven_media"
+                                              ],
+                                              "enumDescriptions": {
+                                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                                "composite_capture": "Multiple digital captures composited together without AI",
+                                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                              }
+                                            },
+                                            "ai_tool": {
+                                              "type": "object",
+                                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                              "properties": {
+                                                "name": {
+                                                  "type": "string",
+                                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                                },
+                                                "version": {
+                                                  "type": "string",
+                                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                                },
+                                                "provider": {
+                                                  "type": "string",
+                                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                                }
+                                              },
+                                              "required": [
+                                                "name"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "human_oversight": {
+                                              "type": "string",
+                                              "description": "Level of human involvement in the AI-assisted creation process",
+                                              "enum": [
+                                                "none",
+                                                "prompt_only",
+                                                "selected",
+                                                "edited",
+                                                "directed"
+                                              ],
+                                              "enumDescriptions": {
+                                                "none": "Fully automated with no human involvement in generation",
+                                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                                "selected": "Human selected from multiple AI-generated candidates",
+                                                "edited": "Human edited or refined AI-generated output",
+                                                "directed": "Human directed the creative process with AI as an assistive tool"
+                                              }
+                                            },
+                                            "declared_by": {
+                                              "type": "object",
+                                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                              "properties": {
+                                                "agent_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL of the agent or service that declared this provenance"
+                                                },
+                                                "role": {
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "creator",
+                                                    "advertiser",
+                                                    "agency",
+                                                    "platform",
+                                                    "tool"
+                                                  ],
+                                                  "description": "Role of the declaring party in the supply chain",
+                                                  "enumDescriptions": {
+                                                    "creator": "The party that created or generated the content",
+                                                    "advertiser": "The brand or advertiser that owns the content",
+                                                    "agency": "Agency acting on behalf of the advertiser",
+                                                    "platform": "Ad platform or publisher that processed the content",
+                                                    "tool": "Automated tool or service that attached provenance metadata"
+                                                  }
+                                                }
+                                              },
+                                              "required": [
+                                                "role"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "declared_at": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                            },
+                                            "created_time": {
+                                              "type": "string",
+                                              "format": "date-time",
+                                              "description": "When this content was created or generated (ISO 8601)"
+                                            },
+                                            "c2pa": {
+                                              "type": "object",
+                                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                              "properties": {
+                                                "manifest_url": {
+                                                  "type": "string",
+                                                  "format": "uri",
+                                                  "description": "URL to the C2PA manifest store for this content"
+                                                }
+                                              },
+                                              "required": [
+                                                "manifest_url"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "disclosure": {
+                                              "type": "object",
+                                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                              "properties": {
+                                                "required": {
+                                                  "type": "boolean",
+                                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                                },
+                                                "jurisdictions": {
+                                                  "type": "array",
+                                                  "description": "Jurisdictions where disclosure obligations apply",
+                                                  "items": {
+                                                    "type": "object",
+                                                    "properties": {
+                                                      "country": {
+                                                        "type": "string",
+                                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                                      },
+                                                      "region": {
+                                                        "type": "string",
+                                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                                      },
+                                                      "regulation": {
+                                                        "type": "string",
+                                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                                      },
+                                                      "label_text": {
+                                                        "type": "string",
+                                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                                      },
+                                                      "render_guidance": {
+                                                        "type": "object",
+                                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                        "minProperties": 1,
+                                                        "properties": {
+                                                          "persistence": {
+                                                            "title": "Disclosure Persistence",
+                                                            "description": "How long the disclosure must persist during content playback or display",
+                                                            "type": "string",
+                                                            "enum": [
+                                                              "continuous",
+                                                              "initial",
+                                                              "flexible"
+                                                            ],
+                                                            "enumDescriptions": {
+                                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                            }
+                                                          },
+                                                          "min_duration_ms": {
+                                                            "type": "integer",
+                                                            "minimum": 1,
+                                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                          },
+                                                          "positions": {
+                                                            "type": "array",
+                                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                            "items": {
+                                                              "title": "Disclosure Position",
+                                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                              "type": "string",
+                                                              "enum": [
+                                                                "prominent",
+                                                                "footer",
+                                                                "audio",
+                                                                "subtitle",
+                                                                "overlay",
+                                                                "end_card",
+                                                                "pre_roll",
+                                                                "companion"
+                                                              ]
+                                                            },
+                                                            "minItems": 1,
+                                                            "uniqueItems": true
+                                                          },
+                                                          "ext": {
+                                                            "title": "Extension Object",
+                                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                            "type": "object",
+                                                            "additionalProperties": true
+                                                          }
+                                                        },
+                                                        "additionalProperties": true
+                                                      }
+                                                    },
+                                                    "required": [
+                                                      "country",
+                                                      "regulation"
+                                                    ],
+                                                    "additionalProperties": true
+                                                  },
+                                                  "minItems": 1
+                                                }
+                                              },
+                                              "required": [
+                                                "required"
+                                              ],
+                                              "additionalProperties": true
+                                            },
+                                            "verification": {
+                                              "type": "array",
+                                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                              "minItems": 1,
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "verified_by": {
+                                                    "type": "string",
+                                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                                  },
+                                                  "verified_time": {
+                                                    "type": "string",
+                                                    "format": "date-time",
+                                                    "description": "When the verification was performed (ISO 8601)"
+                                                  },
+                                                  "result": {
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "authentic",
+                                                      "ai_generated",
+                                                      "ai_modified",
+                                                      "inconclusive"
+                                                    ],
+                                                    "description": "Verification outcome"
+                                                  },
+                                                  "confidence": {
+                                                    "type": "number",
+                                                    "minimum": 0,
+                                                    "maximum": 1,
+                                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                                  },
+                                                  "details_url": {
+                                                    "type": "string",
+                                                    "format": "uri",
+                                                    "description": "URL to the full verification report"
+                                                  }
+                                                },
+                                                "required": [
+                                                  "verified_by",
+                                                  "result"
+                                                ],
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "delivery_type",
+                                        "content"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  ]
+                                },
+                                {
+                                  "title": "Markdown Asset",
+                                  "description": "Markdown-formatted text content following CommonMark specification",
+                                  "type": "object",
+                                  "properties": {
+                                    "content": {
+                                      "type": "string",
+                                      "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                                    },
+                                    "language": {
+                                      "type": "string",
+                                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                                    },
+                                    "markdown_flavor": {
+                                      "title": "Markdown Flavor",
+                                      "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                                      "type": "string",
+                                      "enum": [
+                                        "commonmark",
+                                        "gfm"
+                                      ],
+                                      "default": "commonmark"
+                                    },
+                                    "allow_raw_html": {
+                                      "type": "boolean",
+                                      "default": false,
+                                      "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                                    }
+                                  },
+                                  "required": [
+                                    "content"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                {
+                                  "title": "Brief Asset",
+                                  "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                                  "allOf": [
+                                    {
+                                      "title": "Creative Brief",
+                                      "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                                      "type": "object",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Campaign or flight name for identification"
+                                        },
+                                        "objective": {
+                                          "type": "string",
+                                          "enum": [
+                                            "awareness",
+                                            "consideration",
+                                            "conversion",
+                                            "retention",
+                                            "engagement"
+                                          ],
+                                          "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                                        },
+                                        "tone": {
+                                          "type": "string",
+                                          "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                                        },
+                                        "audience": {
+                                          "type": "string",
+                                          "description": "Target audience description for this campaign"
+                                        },
+                                        "territory": {
+                                          "type": "string",
+                                          "description": "Creative territory or positioning the campaign should occupy"
+                                        },
+                                        "messaging": {
+                                          "type": "object",
+                                          "description": "Messaging framework for the campaign",
+                                          "properties": {
+                                            "headline": {
+                                              "type": "string",
+                                              "description": "Primary headline"
+                                            },
+                                            "tagline": {
+                                              "type": "string",
+                                              "description": "Supporting tagline or sub-headline"
+                                            },
+                                            "cta": {
+                                              "type": "string",
+                                              "description": "Call-to-action text"
+                                            },
+                                            "key_messages": {
+                                              "type": "array",
+                                              "description": "Key messages to communicate in priority order",
+                                              "items": {
+                                                "type": "string"
+                                              }
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        },
+                                        "reference_assets": {
+                                          "type": "array",
+                                          "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                                          "items": {
+                                            "title": "Reference Asset",
+                                            "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                            "type": "object",
+                                            "properties": {
+                                              "url": {
+                                                "type": "string",
+                                                "format": "uri",
+                                                "description": "URL to the reference asset (image, video, or document)"
+                                              },
+                                              "role": {
+                                                "type": "string",
+                                                "enum": [
+                                                  "style_reference",
+                                                  "product_shot",
+                                                  "mood_board",
+                                                  "example_creative",
+                                                  "logo",
+                                                  "strategy_doc",
+                                                  "storyboard"
+                                                ],
+                                                "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                              },
+                                              "description": {
+                                                "type": "string",
+                                                "description": "Human-readable description of the asset and how it should inform creative generation"
+                                              }
+                                            },
+                                            "required": [
+                                              "url",
+                                              "role"
+                                            ],
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "compliance": {
+                                          "type": "object",
+                                          "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                                          "properties": {
+                                            "required_disclosures": {
+                                              "type": "array",
+                                              "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                              "items": {
+                                                "type": "object",
+                                                "properties": {
+                                                  "text": {
+                                                    "type": "string",
+                                                    "description": "The disclosure text that must appear in the creative"
+                                                  },
+                                                  "position": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "jurisdictions": {
+                                                    "type": "array",
+                                                    "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                                    "items": {
+                                                      "type": "string",
+                                                      "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                                    },
+                                                    "minItems": 1
+                                                  },
+                                                  "regulation": {
+                                                    "type": "string",
+                                                    "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                                  },
+                                                  "language": {
+                                                    "type": "string",
+                                                    "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                                  },
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  }
+                                                },
+                                                "required": [
+                                                  "text"
+                                                ],
+                                                "additionalProperties": true
+                                              },
+                                              "minItems": 1
+                                            },
+                                            "prohibited_claims": {
+                                              "type": "array",
+                                              "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                              "items": {
+                                                "type": "string"
+                                              },
+                                              "minItems": 1
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  ]
+                                },
+                                {
+                                  "title": "Catalog Asset",
+                                  "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                                  "allOf": [
+                                    {
+                                      "title": "Catalog",
+                                      "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                                      "type": "object",
+                                      "properties": {
+                                        "catalog_id": {
+                                          "type": "string",
+                                          "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                                        },
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                                        },
+                                        "type": {
+                                          "title": "Catalog Type",
+                                          "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                                          "type": "string",
+                                          "enum": [
+                                            "offering",
+                                            "product",
+                                            "inventory",
+                                            "store",
+                                            "promotion",
+                                            "hotel",
+                                            "flight",
+                                            "job",
+                                            "vehicle",
+                                            "real_estate",
+                                            "education",
+                                            "destination",
+                                            "app"
+                                          ]
+                                        },
+                                        "url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                                        },
+                                        "feed_format": {
+                                          "title": "Feed Format",
+                                          "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                                          "type": "string",
+                                          "enum": [
+                                            "google_merchant_center",
+                                            "facebook_catalog",
+                                            "shopify",
+                                            "linkedin_jobs",
+                                            "custom"
+                                          ]
+                                        },
+                                        "update_frequency": {
+                                          "title": "Update Frequency",
+                                          "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                                          "type": "string",
+                                          "enum": [
+                                            "realtime",
+                                            "hourly",
+                                            "daily",
+                                            "weekly"
+                                          ]
+                                        },
+                                        "items": {
+                                          "type": "array",
+                                          "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                                          "items": {
+                                            "type": "object"
+                                          },
+                                          "minItems": 1
+                                        },
+                                        "ids": {
+                                          "type": "array",
+                                          "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                                          "items": {
+                                            "type": "string"
+                                          },
+                                          "minItems": 1
+                                        },
+                                        "gtins": {
+                                          "type": "array",
+                                          "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                                          "items": {
+                                            "type": "string",
+                                            "pattern": "^[0-9]{8,14}$"
+                                          },
+                                          "minItems": 1
+                                        },
+                                        "tags": {
+                                          "type": "array",
+                                          "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                                          "items": {
+                                            "type": "string"
+                                          },
+                                          "minItems": 1
+                                        },
+                                        "category": {
+                                          "type": "string",
+                                          "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                                        },
+                                        "query": {
+                                          "type": "string",
+                                          "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                                        },
+                                        "conversion_events": {
+                                          "type": "array",
+                                          "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                                          "items": {
+                                            "title": "Event Type",
+                                            "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                            "type": "string",
+                                            "enum": [
+                                              "page_view",
+                                              "view_content",
+                                              "select_content",
+                                              "select_item",
+                                              "search",
+                                              "share",
+                                              "add_to_cart",
+                                              "remove_from_cart",
+                                              "viewed_cart",
+                                              "add_to_wishlist",
+                                              "initiate_checkout",
+                                              "add_payment_info",
+                                              "purchase",
+                                              "refund",
+                                              "lead",
+                                              "qualify_lead",
+                                              "close_convert_lead",
+                                              "disqualify_lead",
+                                              "complete_registration",
+                                              "subscribe",
+                                              "start_trial",
+                                              "app_install",
+                                              "app_launch",
+                                              "contact",
+                                              "schedule",
+                                              "donate",
+                                              "submit_application",
+                                              "custom"
+                                            ],
+                                            "enumDescriptions": {
+                                              "page_view": "User viewed a page",
+                                              "view_content": "User viewed specific content (product, article, etc.)",
+                                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                                              "select_item": "User selected a specific product or item from a list",
+                                              "search": "User performed a search",
+                                              "share": "User shared content via social or messaging",
+                                              "add_to_cart": "User added an item to cart",
+                                              "remove_from_cart": "User removed an item from cart",
+                                              "viewed_cart": "User viewed their shopping cart",
+                                              "add_to_wishlist": "User added an item to a wishlist",
+                                              "initiate_checkout": "User started checkout process",
+                                              "add_payment_info": "User added payment information",
+                                              "purchase": "User completed a purchase",
+                                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                              "lead": "User expressed interest (form submission, signup, etc.)",
+                                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                                              "complete_registration": "User completed account registration",
+                                              "subscribe": "User subscribed to a service or newsletter",
+                                              "start_trial": "User started a free trial",
+                                              "app_install": "User installed an application",
+                                              "app_launch": "User launched an application",
+                                              "contact": "User initiated contact (call, message, etc.)",
+                                              "schedule": "User scheduled an appointment or event",
+                                              "donate": "User made a donation",
+                                              "submit_application": "User submitted an application (loan, job, etc.)",
+                                              "custom": "Custom event type (specify in custom_event_name)"
+                                            }
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "content_id_type": {
+                                          "title": "Content ID Type",
+                                          "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                                          "type": "string",
+                                          "enum": [
+                                            "sku",
+                                            "gtin",
+                                            "offering_id",
+                                            "job_id",
+                                            "hotel_id",
+                                            "flight_id",
+                                            "vehicle_id",
+                                            "listing_id",
+                                            "store_id",
+                                            "program_id",
+                                            "destination_id",
+                                            "app_id"
+                                          ]
+                                        },
+                                        "feed_field_mappings": {
+                                          "type": "array",
+                                          "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                                          "items": {
+                                            "title": "Catalog Field Mapping",
+                                            "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                            "type": "object",
+                                            "properties": {
+                                              "feed_field": {
+                                                "type": "string",
+                                                "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                              },
+                                              "catalog_field": {
+                                                "type": "string",
+                                                "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                              },
+                                              "asset_group_id": {
+                                                "type": "string",
+                                                "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                              },
+                                              "value": {
+                                                "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                              },
+                                              "transform": {
+                                                "type": "string",
+                                                "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                                "enum": [
+                                                  "date",
+                                                  "divide",
+                                                  "boolean",
+                                                  "split"
+                                                ]
+                                              },
+                                              "format": {
+                                                "type": "string",
+                                                "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                              },
+                                              "timezone": {
+                                                "type": "string",
+                                                "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                              },
+                                              "by": {
+                                                "type": "number",
+                                                "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                                "exclusiveMinimum": 0
+                                              },
+                                              "separator": {
+                                                "type": "string",
+                                                "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                                "default": ","
+                                              },
+                                              "default": {
+                                                "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "allOf": [
+                                              {
+                                                "not": {
+                                                  "required": [
+                                                    "feed_field",
+                                                    "value"
+                                                  ]
+                                                }
+                                              },
+                                              {
+                                                "not": {
+                                                  "required": [
+                                                    "catalog_field",
+                                                    "asset_group_id"
+                                                  ]
+                                                }
+                                              }
+                                            ],
+                                            "additionalProperties": true,
+                                            "examples": [
+                                              {
+                                                "description": "Simple field rename",
+                                                "data": {
+                                                  "feed_field": "hotel_name",
+                                                  "catalog_field": "name"
+                                                }
+                                              },
+                                              {
+                                                "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                                "data": {
+                                                  "feed_field": "available_from",
+                                                  "catalog_field": "valid_from",
+                                                  "transform": "date",
+                                                  "format": "YYYYMMDD",
+                                                  "timezone": "UTC"
+                                                }
+                                              },
+                                              {
+                                                "description": "Divide cents to dollars",
+                                                "data": {
+                                                  "feed_field": "price_cents",
+                                                  "catalog_field": "price.amount",
+                                                  "transform": "divide",
+                                                  "by": 100
+                                                }
+                                              },
+                                              {
+                                                "description": "Static literal injection \u2014 currency not in feed",
+                                                "data": {
+                                                  "catalog_field": "price.currency",
+                                                  "value": "USD"
+                                                }
+                                              },
+                                              {
+                                                "description": "Image URL assigned to typed asset pool",
+                                                "data": {
+                                                  "feed_field": "primary_photo_url",
+                                                  "asset_group_id": "images_landscape"
+                                                }
+                                              },
+                                              {
+                                                "description": "Vertical photo URL assigned to vertical pool",
+                                                "data": {
+                                                  "feed_field": "portrait_photo_url",
+                                                  "asset_group_id": "images_vertical"
+                                                }
+                                              },
+                                              {
+                                                "description": "Split comma-separated tags to array",
+                                                "data": {
+                                                  "feed_field": "amenity_list",
+                                                  "catalog_field": "amenities",
+                                                  "transform": "split",
+                                                  "separator": ","
+                                                }
+                                              },
+                                              {
+                                                "description": "Boolean coercion with default",
+                                                "data": {
+                                                  "feed_field": "is_available",
+                                                  "catalog_field": "available",
+                                                  "transform": "boolean",
+                                                  "default": false
+                                                }
+                                              }
+                                            ]
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "type"
+                                      ],
+                                      "additionalProperties": true,
+                                      "examples": [
+                                        {
+                                          "description": "Synced product catalog from Google Merchant Center",
+                                          "data": {
+                                            "catalog_id": "gmc-primary",
+                                            "name": "Primary Product Feed",
+                                            "type": "product",
+                                            "url": "https://feeds.acmecorp.com/products.xml",
+                                            "feed_format": "google_merchant_center",
+                                            "update_frequency": "daily"
+                                          }
+                                        },
+                                        {
+                                          "description": "Inventory feed for store-level stock data",
+                                          "data": {
+                                            "catalog_id": "store-inventory",
+                                            "name": "Store Inventory",
+                                            "type": "inventory",
+                                            "url": "https://feeds.acmecorp.com/inventory.json",
+                                            "feed_format": "custom",
+                                            "update_frequency": "hourly"
+                                          }
+                                        },
+                                        {
+                                          "description": "Store locator feed",
+                                          "data": {
+                                            "catalog_id": "retail-locations",
+                                            "name": "Retail Locations",
+                                            "type": "store",
+                                            "url": "https://feeds.acmecorp.com/stores.json",
+                                            "feed_format": "custom",
+                                            "update_frequency": "weekly"
+                                          }
+                                        },
+                                        {
+                                          "description": "Promotional pricing feed",
+                                          "data": {
+                                            "catalog_id": "summer-sale",
+                                            "name": "Summer Sale Promotions",
+                                            "type": "promotion",
+                                            "url": "https://feeds.acmecorp.com/promotions.json",
+                                            "feed_format": "google_merchant_center",
+                                            "update_frequency": "daily"
+                                          }
+                                        },
+                                        {
+                                          "description": "Inline offering catalog (no sync needed)",
+                                          "data": {
+                                            "type": "offering",
+                                            "items": [
+                                              {
+                                                "offering_id": "summer-sale",
+                                                "name": "Summer Sale",
+                                                "landing_url": "https://acme.com/summer"
+                                              }
+                                            ]
+                                          }
+                                        },
+                                        {
+                                          "description": "Reference to a previously synced catalog by ID",
+                                          "data": {
+                                            "catalog_id": "gmc-primary",
+                                            "type": "product",
+                                            "ids": [
+                                              "SKU-12345",
+                                              "SKU-67890"
+                                            ]
+                                          }
+                                        },
+                                        {
+                                          "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                                          "data": {
+                                            "type": "product",
+                                            "gtins": [
+                                              "00013000006040",
+                                              "00013000006057"
+                                            ],
+                                            "content_id_type": "gtin",
+                                            "conversion_events": [
+                                              "purchase",
+                                              "add_to_cart"
+                                            ]
+                                          }
+                                        },
+                                        {
+                                          "description": "Inline store catalog with catchment areas",
+                                          "data": {
+                                            "catalog_id": "retail-locations",
+                                            "name": "Retail Locations",
+                                            "type": "store",
+                                            "items": [
+                                              {
+                                                "store_id": "amsterdam-flagship",
+                                                "name": "Amsterdam Flagship",
+                                                "location": {
+                                                  "lat": 52.3676,
+                                                  "lng": 4.9041
+                                                },
+                                                "catchments": [
+                                                  {
+                                                    "catchment_id": "walk",
+                                                    "travel_time": {
+                                                      "value": 10,
+                                                      "unit": "min"
+                                                    },
+                                                    "transport_mode": "walking"
+                                                  },
+                                                  {
+                                                    "catchment_id": "drive",
+                                                    "travel_time": {
+                                                      "value": 15,
+                                                      "unit": "min"
+                                                    },
+                                                    "transport_mode": "driving"
+                                                  }
+                                                ]
+                                              }
+                                            ]
+                                          }
+                                        }
+                                      ]
+                                    }
+                                  ]
+                                }
+                              ]
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "rights": {
+                          "type": "array",
+                          "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                          "items": {
+                            "title": "Rights Constraint",
+                            "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                            "type": "object",
+                            "properties": {
+                              "rights_id": {
+                                "type": "string",
+                                "description": "Rights grant identifier from the acquire_rights response"
+                              },
+                              "rights_agent": {
+                                "type": "object",
+                                "description": "The agent that granted these rights",
+                                "properties": {
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "MCP endpoint URL of the rights agent"
+                                  },
+                                  "id": {
+                                    "type": "string",
+                                    "description": "Agent identifier"
+                                  }
+                                },
+                                "required": [
+                                  "url",
+                                  "id"
+                                ]
+                              },
+                              "valid_from": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "Start of the rights validity period"
+                              },
+                              "valid_until": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "End of the rights validity period. Creative should not be served after this time."
+                              },
+                              "uses": {
+                                "type": "array",
+                                "description": "Rights uses covered by this constraint",
+                                "items": {
+                                  "title": "Right Use",
+                                  "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                                  "type": "string",
+                                  "enum": [
+                                    "likeness",
+                                    "voice",
+                                    "name",
+                                    "endorsement",
+                                    "motion_capture",
+                                    "signature",
+                                    "catchphrase",
+                                    "sync",
+                                    "background_music",
+                                    "editorial",
+                                    "commercial"
+                                  ],
+                                  "enumDescriptions": {
+                                    "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                                    "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                                    "name": "Use of a person's name in advertising or promotional materials",
+                                    "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                                    "motion_capture": "Use of a person's movement patterns for animation or video",
+                                    "signature": "Use of a person's signature or autograph",
+                                    "catchphrase": "Use of a person's well-known phrases or sayings",
+                                    "sync": "Synchronization of music with visual media (ads, video)",
+                                    "background_music": "Use of music as background audio in advertising",
+                                    "editorial": "Use in editorial or informational contexts",
+                                    "commercial": "Use in commercial advertising and promotional contexts"
+                                  }
+                                },
+                                "minItems": 1
+                              },
+                              "countries": {
+                                "type": "array",
+                                "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                                "items": {
+                                  "type": "string",
+                                  "pattern": "^[A-Z]{2}$"
+                                }
+                              },
+                              "excluded_countries": {
+                                "type": "array",
+                                "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                                "items": {
+                                  "type": "string",
+                                  "pattern": "^[A-Z]{2}$"
+                                }
+                              },
+                              "impression_cap": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+                              },
+                              "right_type": {
+                                "title": "Right Type",
+                                "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                                "type": "string",
+                                "enum": [
+                                  "talent",
+                                  "character",
+                                  "brand_ip",
+                                  "music",
+                                  "stock_media"
+                                ],
+                                "enumDescriptions": {
+                                  "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                                  "character": "Rights to fictional characters for advertising or co-branding",
+                                  "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                                  "music": "Rights to musical compositions or recordings (sync, background music)",
+                                  "stock_media": "Rights to stock photography, video, or audio collections"
+                                }
+                              },
+                              "approval_status": {
+                                "type": "string",
+                                "enum": [
+                                  "pending",
+                                  "approved",
+                                  "rejected"
+                                ],
+                                "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+                              },
+                              "verification_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "rights_id",
+                              "rights_agent",
+                              "uses"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "industry_identifiers": {
+                          "type": "array",
+                          "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+                          "items": {
+                            "title": "Industry Identifier",
+                            "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                            "type": "object",
+                            "properties": {
+                              "type": {
+                                "title": "Creative Identifier Type",
+                                "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                                "type": "string",
+                                "enum": [
+                                  "ad_id",
+                                  "isci",
+                                  "clearcast_clock"
+                                ],
+                                "enumDescriptions": {
+                                  "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                                  "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                                  "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                                },
+                                "examples": [
+                                  "ad_id",
+                                  "isci",
+                                  "clearcast_clock"
+                                ]
+                              },
+                              "value": {
+                                "type": "string",
+                                "maxLength": 64,
+                                "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                              }
+                            },
+                            "required": [
+                              "type",
+                              "value"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "uniqueItems": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "format_id",
+                        "assets"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "generation_context": {
+                      "type": "object",
+                      "description": "Input signals that triggered generation of this variant (Tier 3). Describes why the platform created this specific variant. Platforms should provide summarized or anonymized signals rather than raw user input. For web contexts, may include page topic or URL. For conversational contexts, an anonymized content signal. For search, query category or intent. When the content context is managed through AdCP content standards, reference the artifact directly via the artifact field.",
+                      "properties": {
+                        "context_type": {
+                          "type": "string",
+                          "description": "Type of context that triggered generation (e.g., 'web_page', 'conversational', 'search', 'app', 'dooh')"
+                        },
+                        "artifact": {
+                          "type": "object",
+                          "description": "Reference to the content-standards artifact that provided the generation context. Links this variant to the specific piece of content (article, video, podcast segment, etc.) where the ad was placed.",
+                          "properties": {
+                            "property_id": {
+                              "title": "Identifier",
+                              "description": "Property where the artifact appears",
+                              "type": "object",
+                              "properties": {
+                                "type": {
+                                  "title": "Property Identifier Types",
+                                  "description": "Type of identifier",
+                                  "type": "string",
+                                  "enum": [
+                                    "domain",
+                                    "subdomain",
+                                    "network_id",
+                                    "ios_bundle",
+                                    "android_package",
+                                    "apple_app_store_id",
+                                    "google_play_id",
+                                    "roku_store_id",
+                                    "fire_tv_asin",
+                                    "samsung_app_id",
+                                    "apple_tv_bundle",
+                                    "bundle_id",
+                                    "venue_id",
+                                    "screen_id",
+                                    "openooh_venue_type",
+                                    "rss_url",
+                                    "apple_podcast_id",
+                                    "spotify_collection_id",
+                                    "podcast_guid",
+                                    "station_id",
+                                    "facility_id"
+                                  ],
+                                  "enumDescriptions": {
+                                    "domain": "Web domain (e.g., example.com)",
+                                    "subdomain": "Specific subdomain (e.g., news.example.com)",
+                                    "network_id": "Network or platform-specific identifier",
+                                    "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                                    "android_package": "Android package name (e.g., com.example.app)",
+                                    "apple_app_store_id": "Apple App Store numeric ID",
+                                    "google_play_id": "Google Play Store package ID",
+                                    "roku_store_id": "Roku Channel Store identifier",
+                                    "fire_tv_asin": "Amazon Fire TV ASIN",
+                                    "samsung_app_id": "Samsung TV app identifier",
+                                    "apple_tv_bundle": "Apple TV app bundle identifier",
+                                    "bundle_id": "Generic app bundle identifier",
+                                    "venue_id": "DOOH venue identifier",
+                                    "screen_id": "DOOH screen identifier within a venue",
+                                    "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                                    "rss_url": "RSS feed URL for podcast or content feed",
+                                    "apple_podcast_id": "Apple Podcasts numeric ID",
+                                    "spotify_collection_id": "Spotify show or collection URI",
+                                    "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                                    "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                                    "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                                  },
+                                  "examples": [
+                                    "domain",
+                                    "ios_bundle",
+                                    "venue_id",
+                                    "apple_podcast_id",
+                                    "station_id",
+                                    "facility_id"
+                                  ]
+                                },
+                                "value": {
+                                  "type": "string",
+                                  "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                                }
+                              },
+                              "required": [
+                                "type",
+                                "value"
+                              ],
+                              "additionalProperties": false
+                            },
+                            "artifact_id": {
+                              "type": "string",
+                              "description": "Artifact identifier within the property"
+                            }
+                          },
+                          "required": [
+                            "property_id",
+                            "artifact_id"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "variant_id"
+                  ]
+                }
+              ]
+            }
+          }
+        },
+        "required": [
+          "creative_id",
+          "variants"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "pagination": {
+      "type": "object",
+      "description": "Pagination information. Present when the request included pagination parameters.",
+      "properties": {
+        "limit": {
+          "type": "integer",
+          "description": "Maximum number of creatives requested",
+          "minimum": 1
+        },
+        "offset": {
+          "type": "integer",
+          "description": "Number of creatives skipped",
+          "minimum": 0
+        },
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more creatives are available beyond this page"
+        },
+        "total": {
+          "type": "integer",
+          "description": "Total number of creatives matching the request filters",
+          "minimum": 0
+        }
+      },
+      "required": [
+        "limit",
+        "offset",
+        "has_more"
+      ],
+      "additionalProperties": true
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "reporting_period",
+    "currency",
+    "creatives"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.233Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/get-creative-features-request.json b/schemas/cache/bundled/creative/get-creative-features-request.json
new file mode 100644
index 000000000..04a23c9e5
--- /dev/null
+++ b/schemas/cache/bundled/creative/get-creative-features-request.json
@@ -0,0 +1,6300 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Creative Features Request",
+  "description": "Request payload for the get_creative_features task. Submits a creative manifest for evaluation by a governance agent, which analyzes the creative and returns scored feature values (brand safety, content categorization, quality metrics, etc.).",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "creative_manifest": {
+      "title": "Creative Manifest",
+      "description": "The creative manifest to evaluate. Contains format_id and assets.",
+      "type": "object",
+      "properties": {
+        "format_id": {
+          "title": "Format ID",
+          "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+          "type": "object",
+          "properties": {
+            "agent_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+            },
+            "id": {
+              "type": "string",
+              "pattern": "^[a-zA-Z0-9_-]+$",
+              "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+            },
+            "width": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "height": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "duration_ms": {
+              "type": "number",
+              "minimum": 1,
+              "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+            }
+          },
+          "required": [
+            "agent_url",
+            "id"
+          ],
+          "additionalProperties": true,
+          "dependencies": {
+            "width": [
+              "height"
+            ],
+            "height": [
+              "width"
+            ]
+          }
+        },
+        "assets": {
+          "type": "object",
+          "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+          "patternProperties": {
+            "^[a-z0-9_]+$": {
+              "anyOf": [
+                {
+                  "title": "Image Asset",
+                  "description": "Image asset with URL and dimensions",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the image asset"
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels"
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels"
+                    },
+                    "format": {
+                      "type": "string",
+                      "description": "Image file format (jpg, png, gif, webp, etc.)"
+                    },
+                    "alt_text": {
+                      "type": "string",
+                      "description": "Alternative text for accessibility",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "width",
+                    "height"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Video Asset",
+                  "description": "Video asset with URL and technical specifications including audio track properties",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the video asset"
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels"
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels"
+                    },
+                    "duration_ms": {
+                      "type": "integer",
+                      "description": "Video duration in milliseconds",
+                      "minimum": 1
+                    },
+                    "file_size_bytes": {
+                      "type": "integer",
+                      "description": "File size in bytes",
+                      "minimum": 1
+                    },
+                    "container_format": {
+                      "type": "string",
+                      "description": "Video container format (mp4, webm, mov, etc.)"
+                    },
+                    "video_codec": {
+                      "type": "string",
+                      "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                    },
+                    "video_bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Video stream bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "frame_rate": {
+                      "type": "string",
+                      "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                    },
+                    "frame_rate_type": {
+                      "type": "string",
+                      "enum": [
+                        "constant",
+                        "variable"
+                      ],
+                      "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                    },
+                    "scan_type": {
+                      "type": "string",
+                      "enum": [
+                        "progressive",
+                        "interlaced"
+                      ],
+                      "description": "Scan type of the video"
+                    },
+                    "color_space": {
+                      "type": "string",
+                      "enum": [
+                        "rec709",
+                        "rec2020",
+                        "rec2100",
+                        "srgb",
+                        "dci_p3"
+                      ],
+                      "description": "Color space of the video"
+                    },
+                    "hdr_format": {
+                      "type": "string",
+                      "enum": [
+                        "sdr",
+                        "hdr10",
+                        "hdr10_plus",
+                        "hlg",
+                        "dolby_vision"
+                      ],
+                      "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                    },
+                    "chroma_subsampling": {
+                      "type": "string",
+                      "enum": [
+                        "4:2:0",
+                        "4:2:2",
+                        "4:4:4"
+                      ],
+                      "description": "Chroma subsampling format"
+                    },
+                    "video_bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        8,
+                        10,
+                        12
+                      ],
+                      "description": "Video bit depth"
+                    },
+                    "gop_interval_seconds": {
+                      "type": "number",
+                      "description": "GOP/keyframe interval in seconds"
+                    },
+                    "gop_type": {
+                      "type": "string",
+                      "enum": [
+                        "closed",
+                        "open"
+                      ],
+                      "description": "GOP structure type"
+                    },
+                    "moov_atom_position": {
+                      "type": "string",
+                      "enum": [
+                        "start",
+                        "end"
+                      ],
+                      "description": "Position of moov atom in MP4 container"
+                    },
+                    "has_audio": {
+                      "type": "boolean",
+                      "description": "Whether the video contains an audio track"
+                    },
+                    "audio_codec": {
+                      "type": "string",
+                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                    },
+                    "audio_sampling_rate_hz": {
+                      "type": "integer",
+                      "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                    },
+                    "audio_channels": {
+                      "type": "string",
+                      "enum": [
+                        "mono",
+                        "stereo",
+                        "5.1",
+                        "7.1"
+                      ],
+                      "description": "Audio channel configuration"
+                    },
+                    "audio_bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        16,
+                        24,
+                        32
+                      ],
+                      "description": "Audio bit depth"
+                    },
+                    "audio_bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Audio bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "audio_loudness_lufs": {
+                      "type": "number",
+                      "description": "Integrated loudness in LUFS"
+                    },
+                    "audio_true_peak_dbfs": {
+                      "type": "number",
+                      "description": "True peak level in dBFS"
+                    },
+                    "captions_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to captions file (WebVTT, SRT, etc.)",
+                      "x-accessibility": true
+                    },
+                    "transcript_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to text transcript of the video content",
+                      "x-accessibility": true
+                    },
+                    "audio_description_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to audio description track for visually impaired users",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "width",
+                    "height"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Audio Asset",
+                  "description": "Audio asset with URL and technical specifications",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the audio asset"
+                    },
+                    "duration_ms": {
+                      "type": "integer",
+                      "description": "Audio duration in milliseconds",
+                      "minimum": 0
+                    },
+                    "file_size_bytes": {
+                      "type": "integer",
+                      "description": "File size in bytes",
+                      "minimum": 1
+                    },
+                    "container_format": {
+                      "type": "string",
+                      "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                    },
+                    "codec": {
+                      "type": "string",
+                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                    },
+                    "sampling_rate_hz": {
+                      "type": "integer",
+                      "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                    },
+                    "channels": {
+                      "type": "string",
+                      "enum": [
+                        "mono",
+                        "stereo",
+                        "5.1",
+                        "7.1"
+                      ],
+                      "description": "Channel configuration"
+                    },
+                    "bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        16,
+                        24,
+                        32
+                      ],
+                      "description": "Bit depth"
+                    },
+                    "bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "loudness_lufs": {
+                      "type": "number",
+                      "description": "Integrated loudness in LUFS"
+                    },
+                    "true_peak_dbfs": {
+                      "type": "number",
+                      "description": "True peak level in dBFS"
+                    },
+                    "transcript_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to text transcript of the audio content",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "VAST Asset",
+                  "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL endpoint that returns VAST XML"
+                        },
+                        "vast_version": {
+                          "title": "VAST Version",
+                          "description": "VAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ]
+                        },
+                        "vpaid_enabled": {
+                          "type": "boolean",
+                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected video duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "VAST Tracking Event",
+                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "rewind",
+                              "skip",
+                              "playerExpand",
+                              "playerCollapse",
+                              "fullscreen",
+                              "exitFullscreen",
+                              "progress",
+                              "notUsed",
+                              "otherAdInteraction",
+                              "interactiveStart",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "closeLinear",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this VAST tag"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "inline",
+                          "description": "Discriminator indicating VAST is delivered as inline XML content"
+                        },
+                        "content": {
+                          "type": "string",
+                          "description": "Inline VAST XML content"
+                        },
+                        "vast_version": {
+                          "title": "VAST Version",
+                          "description": "VAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ]
+                        },
+                        "vpaid_enabled": {
+                          "type": "boolean",
+                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected video duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "VAST Tracking Event",
+                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "rewind",
+                              "skip",
+                              "playerExpand",
+                              "playerCollapse",
+                              "fullscreen",
+                              "exitFullscreen",
+                              "progress",
+                              "notUsed",
+                              "otherAdInteraction",
+                              "interactiveStart",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "closeLinear",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this VAST tag"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Text Asset",
+                  "description": "Text content asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "Text content"
+                    },
+                    "language": {
+                      "type": "string",
+                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "URL Asset",
+                  "description": "URL reference asset",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL reference"
+                    },
+                    "url_type": {
+                      "title": "URL Asset Type",
+                      "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                      "type": "string",
+                      "enum": [
+                        "clickthrough",
+                        "tracker_pixel",
+                        "tracker_script"
+                      ]
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Description of what this URL points to"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "HTML Asset",
+                  "description": "HTML content asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "HTML content"
+                    },
+                    "version": {
+                      "type": "string",
+                      "description": "HTML version (e.g., 'HTML5')"
+                    },
+                    "accessibility": {
+                      "type": "object",
+                      "description": "Self-declared accessibility properties for this opaque creative",
+                      "x-accessibility": true,
+                      "properties": {
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Text alternative describing the creative content"
+                        },
+                        "keyboard_navigable": {
+                          "type": "boolean",
+                          "description": "Whether the creative can be fully operated via keyboard"
+                        },
+                        "motion_control": {
+                          "type": "boolean",
+                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                        },
+                        "screen_reader_tested": {
+                          "type": "boolean",
+                          "description": "Whether the creative has been tested with screen readers"
+                        }
+                      }
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "JavaScript Asset",
+                  "description": "JavaScript code asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "JavaScript content"
+                    },
+                    "module_type": {
+                      "title": "JavaScript Module Type",
+                      "description": "JavaScript module type",
+                      "type": "string",
+                      "enum": [
+                        "esm",
+                        "commonjs",
+                        "script"
+                      ]
+                    },
+                    "accessibility": {
+                      "type": "object",
+                      "description": "Self-declared accessibility properties for this opaque creative",
+                      "x-accessibility": true,
+                      "properties": {
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Text alternative describing the creative content"
+                        },
+                        "keyboard_navigable": {
+                          "type": "boolean",
+                          "description": "Whether the creative can be fully operated via keyboard"
+                        },
+                        "motion_control": {
+                          "type": "boolean",
+                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                        },
+                        "screen_reader_tested": {
+                          "type": "boolean",
+                          "description": "Whether the creative has been tested with screen readers"
+                        }
+                      }
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Webhook Asset",
+                  "description": "Webhook for server-side dynamic content rendering (DCO)",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "Webhook URL to call for dynamic content"
+                    },
+                    "method": {
+                      "title": "HTTP Method",
+                      "description": "HTTP method",
+                      "type": "string",
+                      "enum": [
+                        "GET",
+                        "POST"
+                      ],
+                      "default": "POST"
+                    },
+                    "timeout_ms": {
+                      "type": "integer",
+                      "minimum": 10,
+                      "maximum": 5000,
+                      "default": 500,
+                      "description": "Maximum time to wait for response in milliseconds"
+                    },
+                    "supported_macros": {
+                      "type": "array",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "title": "Universal Macro",
+                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                            "type": "string",
+                            "enum": [
+                              "MEDIA_BUY_ID",
+                              "PACKAGE_ID",
+                              "CREATIVE_ID",
+                              "CACHEBUSTER",
+                              "TIMESTAMP",
+                              "CLICK_URL",
+                              "GDPR",
+                              "GDPR_CONSENT",
+                              "US_PRIVACY",
+                              "GPP_STRING",
+                              "GPP_SID",
+                              "IP_ADDRESS",
+                              "LIMIT_AD_TRACKING",
+                              "DEVICE_TYPE",
+                              "OS",
+                              "OS_VERSION",
+                              "DEVICE_MAKE",
+                              "DEVICE_MODEL",
+                              "USER_AGENT",
+                              "APP_BUNDLE",
+                              "APP_NAME",
+                              "COUNTRY",
+                              "REGION",
+                              "CITY",
+                              "ZIP",
+                              "DMA",
+                              "LAT",
+                              "LONG",
+                              "DEVICE_ID",
+                              "DEVICE_ID_TYPE",
+                              "DOMAIN",
+                              "PAGE_URL",
+                              "REFERRER",
+                              "KEYWORDS",
+                              "PLACEMENT_ID",
+                              "FOLD_POSITION",
+                              "AD_WIDTH",
+                              "AD_HEIGHT",
+                              "VIDEO_ID",
+                              "VIDEO_TITLE",
+                              "VIDEO_DURATION",
+                              "VIDEO_CATEGORY",
+                              "CONTENT_GENRE",
+                              "CONTENT_RATING",
+                              "PLAYER_WIDTH",
+                              "PLAYER_HEIGHT",
+                              "POD_POSITION",
+                              "POD_SIZE",
+                              "AD_BREAK_ID",
+                              "STATION_ID",
+                              "COLLECTION_NAME",
+                              "INSTALLMENT_ID",
+                              "AUDIO_DURATION",
+                              "TMPX",
+                              "AXEM",
+                              "CATALOG_ID",
+                              "SKU",
+                              "GTIN",
+                              "OFFERING_ID",
+                              "JOB_ID",
+                              "HOTEL_ID",
+                              "FLIGHT_ID",
+                              "VEHICLE_ID",
+                              "LISTING_ID",
+                              "STORE_ID",
+                              "PROGRAM_ID",
+                              "DESTINATION_ID",
+                              "CREATIVE_VARIANT_ID",
+                              "APP_ITEM_ID"
+                            ],
+                            "enumDescriptions": {
+                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                              "PACKAGE_ID": "AdCP package identifier",
+                              "CREATIVE_ID": "AdCP creative identifier",
+                              "CACHEBUSTER": "Random number to prevent caching",
+                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                              "US_PRIVACY": "US Privacy (CCPA) string",
+                              "GPP_STRING": "Global Privacy Platform consent string",
+                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                              "OS_VERSION": "OS version number",
+                              "DEVICE_MAKE": "Device manufacturer",
+                              "DEVICE_MODEL": "Device model identifier",
+                              "USER_AGENT": "Full user agent string",
+                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                              "APP_NAME": "Human-readable app name",
+                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                              "REGION": "State/province/region code",
+                              "CITY": "City name",
+                              "ZIP": "Postal code",
+                              "DMA": "Nielsen DMA code (US TV markets)",
+                              "LAT": "Latitude coordinate",
+                              "LONG": "Longitude coordinate",
+                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                              "DOMAIN": "Domain where ad is shown",
+                              "PAGE_URL": "Full page URL (encoded)",
+                              "REFERRER": "HTTP referrer URL",
+                              "KEYWORDS": "Page keywords (comma-separated)",
+                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                              "AD_WIDTH": "Ad slot width in pixels",
+                              "AD_HEIGHT": "Ad slot height in pixels",
+                              "VIDEO_ID": "Content video identifier",
+                              "VIDEO_TITLE": "Content video title",
+                              "VIDEO_DURATION": "Content duration in seconds",
+                              "VIDEO_CATEGORY": "IAB content category",
+                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                              "PLAYER_WIDTH": "Video player width in pixels",
+                              "PLAYER_HEIGHT": "Video player height in pixels",
+                              "POD_POSITION": "Position within ad break",
+                              "POD_SIZE": "Total ads in the ad break",
+                              "AD_BREAK_ID": "Unique ad break identifier",
+                              "STATION_ID": "Radio station or podcast identifier",
+                              "COLLECTION_NAME": "Program or collection name",
+                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                              "AUDIO_DURATION": "Audio content duration in seconds",
+                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                            }
+                          },
+                          {
+                            "type": "string",
+                            "description": "Custom or publisher-specific macro name"
+                          }
+                        ]
+                      },
+                      "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                    },
+                    "required_macros": {
+                      "type": "array",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "title": "Universal Macro",
+                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                            "type": "string",
+                            "enum": [
+                              "MEDIA_BUY_ID",
+                              "PACKAGE_ID",
+                              "CREATIVE_ID",
+                              "CACHEBUSTER",
+                              "TIMESTAMP",
+                              "CLICK_URL",
+                              "GDPR",
+                              "GDPR_CONSENT",
+                              "US_PRIVACY",
+                              "GPP_STRING",
+                              "GPP_SID",
+                              "IP_ADDRESS",
+                              "LIMIT_AD_TRACKING",
+                              "DEVICE_TYPE",
+                              "OS",
+                              "OS_VERSION",
+                              "DEVICE_MAKE",
+                              "DEVICE_MODEL",
+                              "USER_AGENT",
+                              "APP_BUNDLE",
+                              "APP_NAME",
+                              "COUNTRY",
+                              "REGION",
+                              "CITY",
+                              "ZIP",
+                              "DMA",
+                              "LAT",
+                              "LONG",
+                              "DEVICE_ID",
+                              "DEVICE_ID_TYPE",
+                              "DOMAIN",
+                              "PAGE_URL",
+                              "REFERRER",
+                              "KEYWORDS",
+                              "PLACEMENT_ID",
+                              "FOLD_POSITION",
+                              "AD_WIDTH",
+                              "AD_HEIGHT",
+                              "VIDEO_ID",
+                              "VIDEO_TITLE",
+                              "VIDEO_DURATION",
+                              "VIDEO_CATEGORY",
+                              "CONTENT_GENRE",
+                              "CONTENT_RATING",
+                              "PLAYER_WIDTH",
+                              "PLAYER_HEIGHT",
+                              "POD_POSITION",
+                              "POD_SIZE",
+                              "AD_BREAK_ID",
+                              "STATION_ID",
+                              "COLLECTION_NAME",
+                              "INSTALLMENT_ID",
+                              "AUDIO_DURATION",
+                              "TMPX",
+                              "AXEM",
+                              "CATALOG_ID",
+                              "SKU",
+                              "GTIN",
+                              "OFFERING_ID",
+                              "JOB_ID",
+                              "HOTEL_ID",
+                              "FLIGHT_ID",
+                              "VEHICLE_ID",
+                              "LISTING_ID",
+                              "STORE_ID",
+                              "PROGRAM_ID",
+                              "DESTINATION_ID",
+                              "CREATIVE_VARIANT_ID",
+                              "APP_ITEM_ID"
+                            ],
+                            "enumDescriptions": {
+                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                              "PACKAGE_ID": "AdCP package identifier",
+                              "CREATIVE_ID": "AdCP creative identifier",
+                              "CACHEBUSTER": "Random number to prevent caching",
+                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                              "US_PRIVACY": "US Privacy (CCPA) string",
+                              "GPP_STRING": "Global Privacy Platform consent string",
+                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                              "OS_VERSION": "OS version number",
+                              "DEVICE_MAKE": "Device manufacturer",
+                              "DEVICE_MODEL": "Device model identifier",
+                              "USER_AGENT": "Full user agent string",
+                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                              "APP_NAME": "Human-readable app name",
+                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                              "REGION": "State/province/region code",
+                              "CITY": "City name",
+                              "ZIP": "Postal code",
+                              "DMA": "Nielsen DMA code (US TV markets)",
+                              "LAT": "Latitude coordinate",
+                              "LONG": "Longitude coordinate",
+                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                              "DOMAIN": "Domain where ad is shown",
+                              "PAGE_URL": "Full page URL (encoded)",
+                              "REFERRER": "HTTP referrer URL",
+                              "KEYWORDS": "Page keywords (comma-separated)",
+                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                              "AD_WIDTH": "Ad slot width in pixels",
+                              "AD_HEIGHT": "Ad slot height in pixels",
+                              "VIDEO_ID": "Content video identifier",
+                              "VIDEO_TITLE": "Content video title",
+                              "VIDEO_DURATION": "Content duration in seconds",
+                              "VIDEO_CATEGORY": "IAB content category",
+                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                              "PLAYER_WIDTH": "Video player width in pixels",
+                              "PLAYER_HEIGHT": "Video player height in pixels",
+                              "POD_POSITION": "Position within ad break",
+                              "POD_SIZE": "Total ads in the ad break",
+                              "AD_BREAK_ID": "Unique ad break identifier",
+                              "STATION_ID": "Radio station or podcast identifier",
+                              "COLLECTION_NAME": "Program or collection name",
+                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                              "AUDIO_DURATION": "Audio content duration in seconds",
+                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                            }
+                          },
+                          {
+                            "type": "string",
+                            "description": "Custom or publisher-specific macro name"
+                          }
+                        ]
+                      },
+                      "description": "Universal macros that must be provided for webhook to function"
+                    },
+                    "response_type": {
+                      "title": "Webhook Response Type",
+                      "description": "Expected content type of webhook response",
+                      "type": "string",
+                      "enum": [
+                        "html",
+                        "json",
+                        "xml",
+                        "javascript"
+                      ]
+                    },
+                    "security": {
+                      "type": "object",
+                      "description": "Security configuration for webhook calls",
+                      "properties": {
+                        "method": {
+                          "title": "Webhook Security Method",
+                          "description": "Authentication method",
+                          "type": "string",
+                          "enum": [
+                            "hmac_sha256",
+                            "api_key",
+                            "none"
+                          ]
+                        },
+                        "hmac_header": {
+                          "type": "string",
+                          "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                        },
+                        "api_key_header": {
+                          "type": "string",
+                          "description": "Header name for API key (e.g., 'X-API-Key')"
+                        }
+                      },
+                      "required": [
+                        "method"
+                      ]
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "response_type",
+                    "security"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CSS Asset",
+                  "description": "CSS stylesheet asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "CSS content"
+                    },
+                    "media": {
+                      "type": "string",
+                      "description": "CSS media query context (e.g., 'screen', 'print')"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "DAAST Asset",
+                  "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL endpoint that returns DAAST XML"
+                        },
+                        "daast_version": {
+                          "title": "DAAST Version",
+                          "description": "DAAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "1.0",
+                            "1.1"
+                          ]
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected audio duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "DAAST Tracking Event",
+                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "skip",
+                              "progress",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this DAAST tag"
+                        },
+                        "companion_ads": {
+                          "type": "boolean",
+                          "description": "Whether companion display ads are included"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "inline",
+                          "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                        },
+                        "content": {
+                          "type": "string",
+                          "description": "Inline DAAST XML content"
+                        },
+                        "daast_version": {
+                          "title": "DAAST Version",
+                          "description": "DAAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "1.0",
+                            "1.1"
+                          ]
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected audio duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "DAAST Tracking Event",
+                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "skip",
+                              "progress",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this DAAST tag"
+                        },
+                        "companion_ads": {
+                          "type": "boolean",
+                          "description": "Whether companion display ads are included"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Markdown Asset",
+                  "description": "Markdown-formatted text content following CommonMark specification",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                    },
+                    "language": {
+                      "type": "string",
+                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                    },
+                    "markdown_flavor": {
+                      "title": "Markdown Flavor",
+                      "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                      "type": "string",
+                      "enum": [
+                        "commonmark",
+                        "gfm"
+                      ],
+                      "default": "commonmark"
+                    },
+                    "allow_raw_html": {
+                      "type": "boolean",
+                      "default": false,
+                      "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Brief Asset",
+                  "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                  "allOf": [
+                    {
+                      "title": "Creative Brief",
+                      "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                      "type": "object",
+                      "properties": {
+                        "name": {
+                          "type": "string",
+                          "description": "Campaign or flight name for identification"
+                        },
+                        "objective": {
+                          "type": "string",
+                          "enum": [
+                            "awareness",
+                            "consideration",
+                            "conversion",
+                            "retention",
+                            "engagement"
+                          ],
+                          "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                        },
+                        "tone": {
+                          "type": "string",
+                          "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                        },
+                        "audience": {
+                          "type": "string",
+                          "description": "Target audience description for this campaign"
+                        },
+                        "territory": {
+                          "type": "string",
+                          "description": "Creative territory or positioning the campaign should occupy"
+                        },
+                        "messaging": {
+                          "type": "object",
+                          "description": "Messaging framework for the campaign",
+                          "properties": {
+                            "headline": {
+                              "type": "string",
+                              "description": "Primary headline"
+                            },
+                            "tagline": {
+                              "type": "string",
+                              "description": "Supporting tagline or sub-headline"
+                            },
+                            "cta": {
+                              "type": "string",
+                              "description": "Call-to-action text"
+                            },
+                            "key_messages": {
+                              "type": "array",
+                              "description": "Key messages to communicate in priority order",
+                              "items": {
+                                "type": "string"
+                              }
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "reference_assets": {
+                          "type": "array",
+                          "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                          "items": {
+                            "title": "Reference Asset",
+                            "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                            "type": "object",
+                            "properties": {
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the reference asset (image, video, or document)"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "style_reference",
+                                  "product_shot",
+                                  "mood_board",
+                                  "example_creative",
+                                  "logo",
+                                  "strategy_doc",
+                                  "storyboard"
+                                ],
+                                "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of the asset and how it should inform creative generation"
+                              }
+                            },
+                            "required": [
+                              "url",
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "compliance": {
+                          "type": "object",
+                          "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                          "properties": {
+                            "required_disclosures": {
+                              "type": "array",
+                              "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "text": {
+                                    "type": "string",
+                                    "description": "The disclosure text that must appear in the creative"
+                                  },
+                                  "position": {
+                                    "title": "Disclosure Position",
+                                    "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                    "type": "string",
+                                    "enum": [
+                                      "prominent",
+                                      "footer",
+                                      "audio",
+                                      "subtitle",
+                                      "overlay",
+                                      "end_card",
+                                      "pre_roll",
+                                      "companion"
+                                    ]
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                    "items": {
+                                      "type": "string",
+                                      "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                    },
+                                    "minItems": 1
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                  },
+                                  "language": {
+                                    "type": "string",
+                                    "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                  },
+                                  "persistence": {
+                                    "title": "Disclosure Persistence",
+                                    "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                    "type": "string",
+                                    "enum": [
+                                      "continuous",
+                                      "initial",
+                                      "flexible"
+                                    ],
+                                    "enumDescriptions": {
+                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "text"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            },
+                            "prohibited_claims": {
+                              "type": "array",
+                              "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                              "items": {
+                                "type": "string"
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "name"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Catalog Asset",
+                  "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                  "allOf": [
+                    {
+                      "title": "Catalog",
+                      "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                      "type": "object",
+                      "properties": {
+                        "catalog_id": {
+                          "type": "string",
+                          "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                        },
+                        "name": {
+                          "type": "string",
+                          "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                        },
+                        "type": {
+                          "title": "Catalog Type",
+                          "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                          "type": "string",
+                          "enum": [
+                            "offering",
+                            "product",
+                            "inventory",
+                            "store",
+                            "promotion",
+                            "hotel",
+                            "flight",
+                            "job",
+                            "vehicle",
+                            "real_estate",
+                            "education",
+                            "destination",
+                            "app"
+                          ]
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                        },
+                        "feed_format": {
+                          "title": "Feed Format",
+                          "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                          "type": "string",
+                          "enum": [
+                            "google_merchant_center",
+                            "facebook_catalog",
+                            "shopify",
+                            "linkedin_jobs",
+                            "custom"
+                          ]
+                        },
+                        "update_frequency": {
+                          "title": "Update Frequency",
+                          "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                          "type": "string",
+                          "enum": [
+                            "realtime",
+                            "hourly",
+                            "daily",
+                            "weekly"
+                          ]
+                        },
+                        "items": {
+                          "type": "array",
+                          "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                          "items": {
+                            "type": "object"
+                          },
+                          "minItems": 1
+                        },
+                        "ids": {
+                          "type": "array",
+                          "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "gtins": {
+                          "type": "array",
+                          "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                          "items": {
+                            "type": "string",
+                            "pattern": "^[0-9]{8,14}$"
+                          },
+                          "minItems": 1
+                        },
+                        "tags": {
+                          "type": "array",
+                          "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "category": {
+                          "type": "string",
+                          "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                        },
+                        "query": {
+                          "type": "string",
+                          "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                        },
+                        "conversion_events": {
+                          "type": "array",
+                          "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                          "items": {
+                            "title": "Event Type",
+                            "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "content_id_type": {
+                          "title": "Content ID Type",
+                          "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                          "type": "string",
+                          "enum": [
+                            "sku",
+                            "gtin",
+                            "offering_id",
+                            "job_id",
+                            "hotel_id",
+                            "flight_id",
+                            "vehicle_id",
+                            "listing_id",
+                            "store_id",
+                            "program_id",
+                            "destination_id",
+                            "app_id"
+                          ]
+                        },
+                        "feed_field_mappings": {
+                          "type": "array",
+                          "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                          "items": {
+                            "title": "Catalog Field Mapping",
+                            "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                            "type": "object",
+                            "properties": {
+                              "feed_field": {
+                                "type": "string",
+                                "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                              },
+                              "catalog_field": {
+                                "type": "string",
+                                "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                              },
+                              "asset_group_id": {
+                                "type": "string",
+                                "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                              },
+                              "value": {
+                                "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                              },
+                              "transform": {
+                                "type": "string",
+                                "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                "enum": [
+                                  "date",
+                                  "divide",
+                                  "boolean",
+                                  "split"
+                                ]
+                              },
+                              "format": {
+                                "type": "string",
+                                "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                              },
+                              "timezone": {
+                                "type": "string",
+                                "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                              },
+                              "by": {
+                                "type": "number",
+                                "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                "exclusiveMinimum": 0
+                              },
+                              "separator": {
+                                "type": "string",
+                                "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                "default": ","
+                              },
+                              "default": {
+                                "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "allOf": [
+                              {
+                                "not": {
+                                  "required": [
+                                    "feed_field",
+                                    "value"
+                                  ]
+                                }
+                              },
+                              {
+                                "not": {
+                                  "required": [
+                                    "catalog_field",
+                                    "asset_group_id"
+                                  ]
+                                }
+                              }
+                            ],
+                            "additionalProperties": true,
+                            "examples": [
+                              {
+                                "description": "Simple field rename",
+                                "data": {
+                                  "feed_field": "hotel_name",
+                                  "catalog_field": "name"
+                                }
+                              },
+                              {
+                                "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                "data": {
+                                  "feed_field": "available_from",
+                                  "catalog_field": "valid_from",
+                                  "transform": "date",
+                                  "format": "YYYYMMDD",
+                                  "timezone": "UTC"
+                                }
+                              },
+                              {
+                                "description": "Divide cents to dollars",
+                                "data": {
+                                  "feed_field": "price_cents",
+                                  "catalog_field": "price.amount",
+                                  "transform": "divide",
+                                  "by": 100
+                                }
+                              },
+                              {
+                                "description": "Static literal injection \u2014 currency not in feed",
+                                "data": {
+                                  "catalog_field": "price.currency",
+                                  "value": "USD"
+                                }
+                              },
+                              {
+                                "description": "Image URL assigned to typed asset pool",
+                                "data": {
+                                  "feed_field": "primary_photo_url",
+                                  "asset_group_id": "images_landscape"
+                                }
+                              },
+                              {
+                                "description": "Vertical photo URL assigned to vertical pool",
+                                "data": {
+                                  "feed_field": "portrait_photo_url",
+                                  "asset_group_id": "images_vertical"
+                                }
+                              },
+                              {
+                                "description": "Split comma-separated tags to array",
+                                "data": {
+                                  "feed_field": "amenity_list",
+                                  "catalog_field": "amenities",
+                                  "transform": "split",
+                                  "separator": ","
+                                }
+                              },
+                              {
+                                "description": "Boolean coercion with default",
+                                "data": {
+                                  "feed_field": "is_available",
+                                  "catalog_field": "available",
+                                  "transform": "boolean",
+                                  "default": false
+                                }
+                              }
+                            ]
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "type"
+                      ],
+                      "additionalProperties": true,
+                      "examples": [
+                        {
+                          "description": "Synced product catalog from Google Merchant Center",
+                          "data": {
+                            "catalog_id": "gmc-primary",
+                            "name": "Primary Product Feed",
+                            "type": "product",
+                            "url": "https://feeds.acmecorp.com/products.xml",
+                            "feed_format": "google_merchant_center",
+                            "update_frequency": "daily"
+                          }
+                        },
+                        {
+                          "description": "Inventory feed for store-level stock data",
+                          "data": {
+                            "catalog_id": "store-inventory",
+                            "name": "Store Inventory",
+                            "type": "inventory",
+                            "url": "https://feeds.acmecorp.com/inventory.json",
+                            "feed_format": "custom",
+                            "update_frequency": "hourly"
+                          }
+                        },
+                        {
+                          "description": "Store locator feed",
+                          "data": {
+                            "catalog_id": "retail-locations",
+                            "name": "Retail Locations",
+                            "type": "store",
+                            "url": "https://feeds.acmecorp.com/stores.json",
+                            "feed_format": "custom",
+                            "update_frequency": "weekly"
+                          }
+                        },
+                        {
+                          "description": "Promotional pricing feed",
+                          "data": {
+                            "catalog_id": "summer-sale",
+                            "name": "Summer Sale Promotions",
+                            "type": "promotion",
+                            "url": "https://feeds.acmecorp.com/promotions.json",
+                            "feed_format": "google_merchant_center",
+                            "update_frequency": "daily"
+                          }
+                        },
+                        {
+                          "description": "Inline offering catalog (no sync needed)",
+                          "data": {
+                            "type": "offering",
+                            "items": [
+                              {
+                                "offering_id": "summer-sale",
+                                "name": "Summer Sale",
+                                "landing_url": "https://acme.com/summer"
+                              }
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Reference to a previously synced catalog by ID",
+                          "data": {
+                            "catalog_id": "gmc-primary",
+                            "type": "product",
+                            "ids": [
+                              "SKU-12345",
+                              "SKU-67890"
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                          "data": {
+                            "type": "product",
+                            "gtins": [
+                              "00013000006040",
+                              "00013000006057"
+                            ],
+                            "content_id_type": "gtin",
+                            "conversion_events": [
+                              "purchase",
+                              "add_to_cart"
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Inline store catalog with catchment areas",
+                          "data": {
+                            "catalog_id": "retail-locations",
+                            "name": "Retail Locations",
+                            "type": "store",
+                            "items": [
+                              {
+                                "store_id": "amsterdam-flagship",
+                                "name": "Amsterdam Flagship",
+                                "location": {
+                                  "lat": 52.3676,
+                                  "lng": 4.9041
+                                },
+                                "catchments": [
+                                  {
+                                    "catchment_id": "walk",
+                                    "travel_time": {
+                                      "value": 10,
+                                      "unit": "min"
+                                    },
+                                    "transport_mode": "walking"
+                                  },
+                                  {
+                                    "catchment_id": "drive",
+                                    "travel_time": {
+                                      "value": 15,
+                                      "unit": "min"
+                                    },
+                                    "transport_mode": "driving"
+                                  }
+                                ]
+                              }
+                            ]
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "additionalProperties": true
+        },
+        "rights": {
+          "type": "array",
+          "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+          "items": {
+            "title": "Rights Constraint",
+            "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+            "type": "object",
+            "properties": {
+              "rights_id": {
+                "type": "string",
+                "description": "Rights grant identifier from the acquire_rights response"
+              },
+              "rights_agent": {
+                "type": "object",
+                "description": "The agent that granted these rights",
+                "properties": {
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "MCP endpoint URL of the rights agent"
+                  },
+                  "id": {
+                    "type": "string",
+                    "description": "Agent identifier"
+                  }
+                },
+                "required": [
+                  "url",
+                  "id"
+                ]
+              },
+              "valid_from": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Start of the rights validity period"
+              },
+              "valid_until": {
+                "type": "string",
+                "format": "date-time",
+                "description": "End of the rights validity period. Creative should not be served after this time."
+              },
+              "uses": {
+                "type": "array",
+                "description": "Rights uses covered by this constraint",
+                "items": {
+                  "title": "Right Use",
+                  "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                  "type": "string",
+                  "enum": [
+                    "likeness",
+                    "voice",
+                    "name",
+                    "endorsement",
+                    "motion_capture",
+                    "signature",
+                    "catchphrase",
+                    "sync",
+                    "background_music",
+                    "editorial",
+                    "commercial"
+                  ],
+                  "enumDescriptions": {
+                    "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                    "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                    "name": "Use of a person's name in advertising or promotional materials",
+                    "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                    "motion_capture": "Use of a person's movement patterns for animation or video",
+                    "signature": "Use of a person's signature or autograph",
+                    "catchphrase": "Use of a person's well-known phrases or sayings",
+                    "sync": "Synchronization of music with visual media (ads, video)",
+                    "background_music": "Use of music as background audio in advertising",
+                    "editorial": "Use in editorial or informational contexts",
+                    "commercial": "Use in commercial advertising and promotional contexts"
+                  }
+                },
+                "minItems": 1
+              },
+              "countries": {
+                "type": "array",
+                "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "excluded_countries": {
+                "type": "array",
+                "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "impression_cap": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+              },
+              "right_type": {
+                "title": "Right Type",
+                "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                "type": "string",
+                "enum": [
+                  "talent",
+                  "character",
+                  "brand_ip",
+                  "music",
+                  "stock_media"
+                ],
+                "enumDescriptions": {
+                  "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                  "character": "Rights to fictional characters for advertising or co-branding",
+                  "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                  "music": "Rights to musical compositions or recordings (sync, background music)",
+                  "stock_media": "Rights to stock photography, video, or audio collections"
+                }
+              },
+              "approval_status": {
+                "type": "string",
+                "enum": [
+                  "pending",
+                  "approved",
+                  "rejected"
+                ],
+                "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+              },
+              "verification_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "rights_id",
+              "rights_agent",
+              "uses"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "industry_identifiers": {
+          "type": "array",
+          "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+          "items": {
+            "title": "Industry Identifier",
+            "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+            "type": "object",
+            "properties": {
+              "type": {
+                "title": "Creative Identifier Type",
+                "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                "type": "string",
+                "enum": [
+                  "ad_id",
+                  "isci",
+                  "clearcast_clock"
+                ],
+                "enumDescriptions": {
+                  "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                  "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                  "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                },
+                "examples": [
+                  "ad_id",
+                  "isci",
+                  "clearcast_clock"
+                ]
+              },
+              "value": {
+                "type": "string",
+                "maxLength": 64,
+                "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": true
+          },
+          "uniqueItems": true
+        },
+        "provenance": {
+          "title": "Provenance",
+          "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+          "type": "object",
+          "properties": {
+            "digital_source_type": {
+              "title": "Digital Source Type",
+              "description": "IPTC-aligned classification of AI involvement in producing this content",
+              "type": "string",
+              "enum": [
+                "digital_capture",
+                "digital_creation",
+                "trained_algorithmic_media",
+                "composite_with_trained_algorithmic_media",
+                "algorithmic_media",
+                "composite_capture",
+                "composite_synthetic",
+                "human_edits",
+                "data_driven_media"
+              ],
+              "enumDescriptions": {
+                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                "composite_capture": "Multiple digital captures composited together without AI",
+                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+              }
+            },
+            "ai_tool": {
+              "type": "object",
+              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                },
+                "version": {
+                  "type": "string",
+                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                },
+                "provider": {
+                  "type": "string",
+                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                }
+              },
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
+            },
+            "human_oversight": {
+              "type": "string",
+              "description": "Level of human involvement in the AI-assisted creation process",
+              "enum": [
+                "none",
+                "prompt_only",
+                "selected",
+                "edited",
+                "directed"
+              ],
+              "enumDescriptions": {
+                "none": "Fully automated with no human involvement in generation",
+                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                "selected": "Human selected from multiple AI-generated candidates",
+                "edited": "Human edited or refined AI-generated output",
+                "directed": "Human directed the creative process with AI as an assistive tool"
+              }
+            },
+            "declared_by": {
+              "type": "object",
+              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent or service that declared this provenance"
+                },
+                "role": {
+                  "type": "string",
+                  "enum": [
+                    "creator",
+                    "advertiser",
+                    "agency",
+                    "platform",
+                    "tool"
+                  ],
+                  "description": "Role of the declaring party in the supply chain",
+                  "enumDescriptions": {
+                    "creator": "The party that created or generated the content",
+                    "advertiser": "The brand or advertiser that owns the content",
+                    "agency": "Agency acting on behalf of the advertiser",
+                    "platform": "Ad platform or publisher that processed the content",
+                    "tool": "Automated tool or service that attached provenance metadata"
+                  }
+                }
+              },
+              "required": [
+                "role"
+              ],
+              "additionalProperties": true
+            },
+            "declared_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+            },
+            "created_time": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this content was created or generated (ISO 8601)"
+            },
+            "c2pa": {
+              "type": "object",
+              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+              "properties": {
+                "manifest_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL to the C2PA manifest store for this content"
+                }
+              },
+              "required": [
+                "manifest_url"
+              ],
+              "additionalProperties": true
+            },
+            "disclosure": {
+              "type": "object",
+              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+              "properties": {
+                "required": {
+                  "type": "boolean",
+                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                },
+                "jurisdictions": {
+                  "type": "array",
+                  "description": "Jurisdictions where disclosure obligations apply",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "country": {
+                        "type": "string",
+                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                      },
+                      "region": {
+                        "type": "string",
+                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                      },
+                      "regulation": {
+                        "type": "string",
+                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                      },
+                      "label_text": {
+                        "type": "string",
+                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                      },
+                      "render_guidance": {
+                        "type": "object",
+                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                        "minProperties": 1,
+                        "properties": {
+                          "persistence": {
+                            "title": "Disclosure Persistence",
+                            "description": "How long the disclosure must persist during content playback or display",
+                            "type": "string",
+                            "enum": [
+                              "continuous",
+                              "initial",
+                              "flexible"
+                            ],
+                            "enumDescriptions": {
+                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                            }
+                          },
+                          "min_duration_ms": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                          },
+                          "positions": {
+                            "type": "array",
+                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                            "items": {
+                              "title": "Disclosure Position",
+                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                              "type": "string",
+                              "enum": [
+                                "prominent",
+                                "footer",
+                                "audio",
+                                "subtitle",
+                                "overlay",
+                                "end_card",
+                                "pre_roll",
+                                "companion"
+                              ]
+                            },
+                            "minItems": 1,
+                            "uniqueItems": true
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "country",
+                      "regulation"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "required"
+              ],
+              "additionalProperties": true
+            },
+            "verification": {
+              "type": "array",
+              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+              "minItems": 1,
+              "items": {
+                "type": "object",
+                "properties": {
+                  "verified_by": {
+                    "type": "string",
+                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                  },
+                  "verified_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the verification was performed (ISO 8601)"
+                  },
+                  "result": {
+                    "type": "string",
+                    "enum": [
+                      "authentic",
+                      "ai_generated",
+                      "ai_modified",
+                      "inconclusive"
+                    ],
+                    "description": "Verification outcome"
+                  },
+                  "confidence": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                  },
+                  "details_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL to the full verification report"
+                  }
+                },
+                "required": [
+                  "verified_by",
+                  "result"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "format_id",
+        "assets"
+      ],
+      "additionalProperties": true
+    },
+    "feature_ids": {
+      "type": "array",
+      "description": "Optional filter to specific features. If omitted, returns all available features.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account for billing this evaluation. Required when the governance agent charges per evaluation.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "creative_manifest"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.246Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/get-creative-features-response.json b/schemas/cache/bundled/creative/get-creative-features-response.json
new file mode 100644
index 000000000..6142f5156
--- /dev/null
+++ b/schemas/cache/bundled/creative/get-creative-features-response.json
@@ -0,0 +1,227 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Creative Features Response",
+  "description": "Response payload for the get_creative_features task. Returns scored feature values from the governance agent's evaluation of the submitted creative manifest.",
+  "type": "object",
+  "oneOf": [
+    {
+      "type": "object",
+      "description": "Success response",
+      "properties": {
+        "results": {
+          "type": "array",
+          "description": "Feature values for the evaluated creative",
+          "items": {
+            "title": "Creative Feature Result",
+            "description": "A single feature evaluation result for a creative. Uses the same value structure as property-feature-value (value, confidence, expires_at, etc.).",
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "The feature that was evaluated (e.g., 'auto_redirect', 'brand_consistency'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:eu_ai_act_article_50'). Unprefixed feature IDs are agent-defined."
+              },
+              "value": {
+                "description": "The feature value. Type depends on feature definition: boolean for binary, number for quantitative, string for categorical.",
+                "oneOf": [
+                  {
+                    "type": "boolean"
+                  },
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "string"
+                  }
+                ]
+              },
+              "unit": {
+                "type": "string",
+                "description": "Unit of measurement for quantitative values (e.g., 'percentage', 'score')"
+              },
+              "confidence": {
+                "type": "number",
+                "minimum": 0,
+                "maximum": 1,
+                "description": "Confidence score for this value (0-1)"
+              },
+              "measured_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this feature was evaluated"
+              },
+              "expires_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this evaluation expires and should be refreshed"
+              },
+              "methodology_version": {
+                "type": "string",
+                "description": "Version of the methodology used to evaluate this feature"
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional vendor-specific details about this evaluation",
+                "additionalProperties": true
+              },
+              "policy_id": {
+                "type": "string",
+                "description": "Optional attribution \u2014 when this feature was evaluated to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "feature_id",
+              "value"
+            ],
+            "additionalProperties": false
+          }
+        },
+        "detail_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to the vendor's full assessment report. The vendor controls what information is disclosed and access control."
+        },
+        "pricing_option_id": {
+          "type": "string",
+          "description": "Which rate card pricing option was applied for this evaluation. Present when the governance agent charges for evaluations and account was provided in the request."
+        },
+        "vendor_cost": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Cost incurred for this evaluation, denominated in currency."
+        },
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code for vendor_cost."
+        },
+        "consumption": {
+          "title": "Creative Consumption",
+          "description": "Structured consumption details for this evaluation. Informational \u2014 lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth.",
+          "type": "object",
+          "properties": {
+            "tokens": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "LLM or generation tokens consumed during creative generation."
+            },
+            "images_generated": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of images produced during generation."
+            },
+            "renders": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of render passes performed (video, animation)."
+            },
+            "duration_seconds": {
+              "type": "number",
+              "minimum": 0,
+              "description": "Processing time billed, in seconds. For compute-time pricing models."
+            }
+          },
+          "additionalProperties": true
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "results"
+      ]
+    },
+    {
+      "type": "object",
+      "description": "Error response",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ]
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.251Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/list-creative-formats-request.json b/schemas/cache/bundled/creative/list-creative-formats-request.json
new file mode 100644
index 000000000..afc39e63f
--- /dev/null
+++ b/schemas/cache/bundled/creative/list-creative-formats-request.json
@@ -0,0 +1,418 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Creative Formats Request (Creative Agent)",
+  "description": "Request parameters for discovering creative formats provided by this creative agent",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "format_ids": {
+      "type": "array",
+      "description": "Return only these specific format IDs",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1
+    },
+    "type": {
+      "type": "string",
+      "description": "Filter by format type (technical categories with distinct requirements)",
+      "enum": [
+        "audio",
+        "video",
+        "display",
+        "dooh"
+      ]
+    },
+    "asset_types": {
+      "type": "array",
+      "description": "Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
+      "items": {
+        "type": "string",
+        "enum": [
+          "image",
+          "video",
+          "audio",
+          "text",
+          "html",
+          "javascript",
+          "url"
+        ]
+      },
+      "minItems": 1
+    },
+    "max_width": {
+      "type": "integer",
+      "description": "Maximum width in pixels (inclusive). Returns formats with width <= this value. Omit for responsive/fluid formats."
+    },
+    "max_height": {
+      "type": "integer",
+      "description": "Maximum height in pixels (inclusive). Returns formats with height <= this value. Omit for responsive/fluid formats."
+    },
+    "min_width": {
+      "type": "integer",
+      "description": "Minimum width in pixels (inclusive). Returns formats with width >= this value."
+    },
+    "min_height": {
+      "type": "integer",
+      "description": "Minimum height in pixels (inclusive). Returns formats with height >= this value."
+    },
+    "is_responsive": {
+      "type": "boolean",
+      "description": "Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions."
+    },
+    "name_search": {
+      "type": "string",
+      "description": "Search for formats by name (case-insensitive partial match)"
+    },
+    "wcag_level": {
+      "title": "WCAG Level",
+      "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)",
+      "type": "string",
+      "enum": [
+        "A",
+        "AA",
+        "AAA"
+      ],
+      "enumDescriptions": {
+        "A": "Minimum level of conformance. Addresses the most basic accessibility barriers.",
+        "AA": "Addresses the most common barriers for disabled users. Required by most accessibility regulations.",
+        "AAA": "Highest level of conformance. Addresses the widest range of accessibility barriers."
+      }
+    },
+    "disclosure_positions": {
+      "type": "array",
+      "description": "Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
+      "items": {
+        "title": "Disclosure Position",
+        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+        "type": "string",
+        "enum": [
+          "prominent",
+          "footer",
+          "audio",
+          "subtitle",
+          "overlay",
+          "end_card",
+          "pre_roll",
+          "companion"
+        ]
+      },
+      "minItems": 1,
+      "uniqueItems": true
+    },
+    "disclosure_persistence": {
+      "type": "array",
+      "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
+      "items": {
+        "title": "Disclosure Persistence",
+        "description": "How long a disclosure must persist during content playback or display. Different jurisdictions and regulations require different persistence behaviors for AI-generated content labels. When multiple sources specify persistence for the same jurisdiction (e.g., brief and provenance), the most restrictive mode applies: continuous > initial > flexible.",
+        "type": "string",
+        "enum": [
+          "continuous",
+          "initial",
+          "flexible"
+        ],
+        "enumDescriptions": {
+          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+        }
+      },
+      "minItems": 1,
+      "uniqueItems": true
+    },
+    "output_format_ids": {
+      "type": "array",
+      "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1
+    },
+    "input_format_ids": {
+      "type": "array",
+      "description": "Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input \u2014 inspect each result's output_format_ids to see what they can produce.",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1
+    },
+    "include_pricing": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include pricing_options on each format. Used by transformation and generation agents that charge per format or per unit of work. Requires account. When false or omitted, pricing is not computed."
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account reference for pricing. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each format.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.252Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/list-creative-formats-response.json b/schemas/cache/bundled/creative/list-creative-formats-response.json
new file mode 100644
index 000000000..431903669
--- /dev/null
+++ b/schemas/cache/bundled/creative/list-creative-formats-response.json
@@ -0,0 +1,4047 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Creative Formats Response (Creative Agent)",
+  "description": "Response payload for list_creative_formats task from creative agent - returns full format definitions",
+  "type": "object",
+  "properties": {
+    "formats": {
+      "type": "array",
+      "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
+      "items": {
+        "title": "Format",
+        "description": "Represents a creative format with its requirements",
+        "type": "object",
+        "$defs": {
+          "baseIndividualAsset": {
+            "type": "object",
+            "properties": {
+              "item_type": {
+                "type": "string",
+                "const": "individual",
+                "description": "Discriminator indicating this is an individual asset"
+              },
+              "asset_id": {
+                "type": "string",
+                "description": "Unique identifier for this asset. Creative manifests MUST use this exact value as the key in the assets object."
+              },
+              "asset_role": {
+                "type": "string",
+                "description": "Descriptive label for this asset's purpose (e.g., 'hero_image', 'logo', 'third_party_tracking'). For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role."
+              },
+              "required": {
+                "type": "boolean",
+                "description": "Whether this asset is required (true) or optional (false). Required assets must be provided for a valid creative. Optional assets enhance the creative but are not mandatory."
+              },
+              "overlays": {
+                "type": "array",
+                "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., video player controls, publisher logos). Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+                "items": {
+                  "title": "Overlay",
+                  "description": "A publisher-controlled element that renders on top of buyer creative content within the ad placement. Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+                  "type": "object",
+                  "properties": {
+                    "id": {
+                      "type": "string",
+                      "description": "Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')"
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Human-readable explanation of what this overlay is and how buyers should account for it"
+                    },
+                    "visual": {
+                      "type": "object",
+                      "description": "Optional visual reference for this overlay element. Useful for creative agents compositing previews and for buyers understanding what will appear over their content. Must include at least one of: url, light, or dark.",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor."
+                        },
+                        "light": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)"
+                        },
+                        "dark": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on dark backgrounds (SVG or PNG)"
+                        }
+                      },
+                      "minProperties": 1,
+                      "additionalProperties": false
+                    },
+                    "bounds": {
+                      "type": "object",
+                      "description": "Position and size of the overlay relative to the asset's own top-left corner. See 'unit' for coordinate interpretation.",
+                      "properties": {
+                        "x": {
+                          "type": "number",
+                          "description": "Horizontal offset from the asset's left edge"
+                        },
+                        "y": {
+                          "type": "number",
+                          "description": "Vertical offset from the asset's top edge"
+                        },
+                        "width": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Width of the overlay"
+                        },
+                        "height": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Height of the overlay"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "px",
+                            "fraction",
+                            "inches",
+                            "cm",
+                            "mm",
+                            "pt"
+                          ],
+                          "description": "'px' = absolute pixels from asset top-left. 'fraction' = proportional to asset dimensions (0.0 = edge, 1.0 = opposite edge). 'inches', 'cm', 'mm', 'pt' (1/72 inch) = physical units for print overlays, measured from asset top-left."
+                        }
+                      },
+                      "required": [
+                        "x",
+                        "y",
+                        "width",
+                        "height",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    }
+                  },
+                  "required": [
+                    "id",
+                    "bounds"
+                  ],
+                  "additionalProperties": false
+                }
+              }
+            },
+            "required": [
+              "item_type",
+              "asset_id",
+              "asset_type",
+              "required"
+            ]
+          },
+          "baseGroupAsset": {
+            "type": "object",
+            "properties": {
+              "asset_id": {
+                "type": "string",
+                "description": "Identifier for this asset within the group"
+              },
+              "asset_role": {
+                "type": "string",
+                "description": "Descriptive label for this asset's purpose. For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role."
+              },
+              "required": {
+                "type": "boolean",
+                "description": "Whether this asset is required within each repetition of the group",
+                "default": false
+              },
+              "overlays": {
+                "type": "array",
+                "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., carousel navigation arrows, slide indicators). Creative agents should avoid placing critical content within overlay bounds.",
+                "items": {
+                  "title": "Overlay",
+                  "description": "A publisher-controlled element that renders on top of buyer creative content within the ad placement. Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+                  "type": "object",
+                  "properties": {
+                    "id": {
+                      "type": "string",
+                      "description": "Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')"
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Human-readable explanation of what this overlay is and how buyers should account for it"
+                    },
+                    "visual": {
+                      "type": "object",
+                      "description": "Optional visual reference for this overlay element. Useful for creative agents compositing previews and for buyers understanding what will appear over their content. Must include at least one of: url, light, or dark.",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor."
+                        },
+                        "light": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)"
+                        },
+                        "dark": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on dark backgrounds (SVG or PNG)"
+                        }
+                      },
+                      "minProperties": 1,
+                      "additionalProperties": false
+                    },
+                    "bounds": {
+                      "type": "object",
+                      "description": "Position and size of the overlay relative to the asset's own top-left corner. See 'unit' for coordinate interpretation.",
+                      "properties": {
+                        "x": {
+                          "type": "number",
+                          "description": "Horizontal offset from the asset's left edge"
+                        },
+                        "y": {
+                          "type": "number",
+                          "description": "Vertical offset from the asset's top edge"
+                        },
+                        "width": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Width of the overlay"
+                        },
+                        "height": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Height of the overlay"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "px",
+                            "fraction",
+                            "inches",
+                            "cm",
+                            "mm",
+                            "pt"
+                          ],
+                          "description": "'px' = absolute pixels from asset top-left. 'fraction' = proportional to asset dimensions (0.0 = edge, 1.0 = opposite edge). 'inches', 'cm', 'mm', 'pt' (1/72 inch) = physical units for print overlays, measured from asset top-left."
+                        }
+                      },
+                      "required": [
+                        "x",
+                        "y",
+                        "width",
+                        "height",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    }
+                  },
+                  "required": [
+                    "id",
+                    "bounds"
+                  ],
+                  "additionalProperties": false
+                }
+              }
+            },
+            "required": [
+              "asset_id",
+              "asset_type",
+              "required"
+            ]
+          }
+        },
+        "properties": {
+          "format_id": {
+            "title": "Format ID",
+            "description": "Structured format identifier with agent URL and format name",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable format name"
+          },
+          "description": {
+            "type": "string",
+            "description": "Plain text explanation of what this format does and what assets it requires"
+          },
+          "example_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Optional URL to showcase page with examples and interactive demos of this format"
+          },
+          "accepts_parameters": {
+            "type": "array",
+            "description": "List of parameters this format accepts in format_id. Template formats define which parameters (dimensions, duration, etc.) can be specified when instantiating the format. Empty or omitted means this is a concrete format with fixed parameters.",
+            "items": {
+              "title": "Format ID Parameter",
+              "description": "Types of parameters that template formats accept in format_id objects to create parameterized format identifiers",
+              "type": "string",
+              "enum": [
+                "dimensions",
+                "duration"
+              ]
+            },
+            "uniqueItems": true
+          },
+          "renders": {
+            "type": "array",
+            "description": "Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "role": {
+                  "type": "string",
+                  "description": "Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+                },
+                "parameters_from_format_id": {
+                  "type": "boolean",
+                  "description": "When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly."
+                },
+                "dimensions": {
+                  "type": "object",
+                  "description": "Dimensions for this rendered piece. Defaults to pixels when unit is absent.",
+                  "properties": {
+                    "width": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Fixed width. Interpretation depends on unit (default: pixels)."
+                    },
+                    "height": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Fixed height. Interpretation depends on unit (default: pixels)."
+                    },
+                    "min_width": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Minimum width for responsive renders"
+                    },
+                    "min_height": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Minimum height for responsive renders"
+                    },
+                    "max_width": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Maximum width for responsive renders"
+                    },
+                    "max_height": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Maximum height for responsive renders"
+                    },
+                    "unit": {
+                      "title": "Dimension Unit",
+                      "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                      "type": "string",
+                      "enum": [
+                        "px",
+                        "dp",
+                        "inches",
+                        "cm",
+                        "mm",
+                        "pt"
+                      ]
+                    },
+                    "responsive": {
+                      "type": "object",
+                      "description": "Indicates which dimensions are responsive/fluid",
+                      "properties": {
+                        "width": {
+                          "type": "boolean"
+                        },
+                        "height": {
+                          "type": "boolean"
+                        }
+                      },
+                      "required": [
+                        "width",
+                        "height"
+                      ]
+                    },
+                    "aspect_ratio": {
+                      "type": "string",
+                      "description": "Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
+                      "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$"
+                    }
+                  }
+                }
+              },
+              "required": [
+                "role"
+              ],
+              "oneOf": [
+                {
+                  "required": [
+                    "dimensions"
+                  ],
+                  "not": {
+                    "required": [
+                      "parameters_from_format_id"
+                    ]
+                  }
+                },
+                {
+                  "required": [
+                    "parameters_from_format_id"
+                  ],
+                  "properties": {
+                    "parameters_from_format_id": {
+                      "const": true
+                    }
+                  },
+                  "not": {
+                    "required": [
+                      "dimensions"
+                    ]
+                  }
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "assets": {
+            "type": "array",
+            "description": "Array of all assets supported for this format. Each asset is identified by its asset_id, which must be used as the key in creative manifests. Use the 'required' boolean on each asset to indicate whether it's mandatory.",
+            "items": {
+              "oneOf": [
+                {
+                  "description": "Image asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "image"
+                    },
+                    "requirements": {
+                      "title": "Image Asset Requirements",
+                      "description": "Requirements for image creative assets. These define the technical constraints for image files.",
+                      "type": "object",
+                      "properties": {
+                        "min_width": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                        },
+                        "max_width": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                        },
+                        "min_height": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                        },
+                        "max_height": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                        },
+                        "unit": {
+                          "title": "Dimension Unit",
+                          "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                          "type": "string",
+                          "enum": [
+                            "px",
+                            "dp",
+                            "inches",
+                            "cm",
+                            "mm",
+                            "pt"
+                          ]
+                        },
+                        "aspect_ratio": {
+                          "type": "string",
+                          "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
+                          "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')"
+                        },
+                        "formats": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "jpg",
+                              "jpeg",
+                              "png",
+                              "gif",
+                              "webp",
+                              "svg",
+                              "avif",
+                              "tiff",
+                              "pdf",
+                              "eps"
+                            ]
+                          },
+                          "description": "Accepted image file formats"
+                        },
+                        "min_dpi": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI."
+                        },
+                        "bleed": {
+                          "type": "object",
+                          "description": "Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.",
+                          "oneOf": [
+                            {
+                              "properties": {
+                                "uniform": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "description": "Same bleed on all four sides"
+                                }
+                              },
+                              "required": [
+                                "uniform"
+                              ],
+                              "additionalProperties": false
+                            },
+                            {
+                              "properties": {
+                                "top": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "right": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "bottom": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "left": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "top",
+                                "right",
+                                "bottom",
+                                "left"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ]
+                        },
+                        "color_space": {
+                          "type": "string",
+                          "enum": [
+                            "rgb",
+                            "cmyk",
+                            "grayscale"
+                          ],
+                          "description": "Required color space. Print typically requires CMYK."
+                        },
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        },
+                        "transparency_required": {
+                          "type": "boolean",
+                          "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)"
+                        },
+                        "animation_allowed": {
+                          "type": "boolean",
+                          "description": "Whether animated images (GIF, animated WebP) are accepted"
+                        },
+                        "max_animation_duration_ms": {
+                          "type": "integer",
+                          "minimum": 0,
+                          "description": "Maximum animation duration in milliseconds (if animation_allowed is true)"
+                        },
+                        "max_weight_grams": {
+                          "type": "integer",
+                          "exclusiveMinimum": 0,
+                          "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels."
+                        }
+                      },
+                      "if": {
+                        "required": [
+                          "min_dpi"
+                        ]
+                      },
+                      "then": {
+                        "required": [
+                          "unit"
+                        ]
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Video asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "video"
+                    },
+                    "requirements": {
+                      "title": "Video Asset Requirements",
+                      "description": "Requirements for video creative assets. These define the technical constraints for video files.",
+                      "type": "object",
+                      "properties": {
+                        "min_width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum width in pixels"
+                        },
+                        "max_width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum width in pixels"
+                        },
+                        "min_height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum height in pixels"
+                        },
+                        "max_height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum height in pixels"
+                        },
+                        "aspect_ratio": {
+                          "type": "string",
+                          "pattern": "^\\d+:\\d+$",
+                          "description": "Required aspect ratio (e.g., '16:9', '9:16')"
+                        },
+                        "min_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum duration in milliseconds"
+                        },
+                        "max_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum duration in milliseconds"
+                        },
+                        "containers": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mp4",
+                              "webm",
+                              "mov",
+                              "avi",
+                              "mkv"
+                            ]
+                          },
+                          "description": "Accepted video container formats"
+                        },
+                        "codecs": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "h264",
+                              "h265",
+                              "vp8",
+                              "vp9",
+                              "av1",
+                              "prores"
+                            ]
+                          },
+                          "description": "Accepted video codecs"
+                        },
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        },
+                        "min_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum video bitrate in kilobits per second"
+                        },
+                        "max_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum video bitrate in kilobits per second"
+                        },
+                        "frame_rates": {
+                          "type": "array",
+                          "items": {
+                            "type": "number",
+                            "minimum": 1
+                          },
+                          "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])"
+                        },
+                        "audio_required": {
+                          "type": "boolean",
+                          "description": "Whether the video must include an audio track"
+                        },
+                        "frame_rate_type": {
+                          "type": "string",
+                          "enum": [
+                            "constant",
+                            "variable"
+                          ],
+                          "description": "Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing."
+                        },
+                        "scan_type": {
+                          "type": "string",
+                          "enum": [
+                            "progressive",
+                            "interlaced"
+                          ],
+                          "description": "Required scan type. Modern delivery requires progressive scan."
+                        },
+                        "gop_type": {
+                          "type": "string",
+                          "enum": [
+                            "closed",
+                            "open"
+                          ],
+                          "description": "Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points."
+                        },
+                        "min_gop_interval_seconds": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Minimum keyframe interval in seconds"
+                        },
+                        "max_gop_interval_seconds": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals."
+                        },
+                        "moov_atom_position": {
+                          "type": "string",
+                          "enum": [
+                            "start",
+                            "end"
+                          ],
+                          "description": "Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+                        },
+                        "audio_codecs": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "aac",
+                              "pcm",
+                              "ac3",
+                              "eac3",
+                              "mp3",
+                              "opus",
+                              "vorbis",
+                              "flac"
+                            ]
+                          },
+                          "description": "Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"
+                        },
+                        "audio_sample_rates": {
+                          "type": "array",
+                          "items": {
+                            "type": "integer",
+                            "minimum": 1
+                          },
+                          "description": "Accepted audio sample rates in Hz (e.g., [44100, 48000])"
+                        },
+                        "audio_channels": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo",
+                              "5.1",
+                              "7.1"
+                            ]
+                          },
+                          "description": "Accepted audio channel configurations"
+                        },
+                        "loudness_lufs": {
+                          "type": "number",
+                          "description": "Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)"
+                        },
+                        "loudness_tolerance_db": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)"
+                        },
+                        "true_peak_dbfs": {
+                          "type": "number",
+                          "description": "Maximum true peak level in dBFS (e.g., -2 for broadcast)"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Audio asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "audio"
+                    },
+                    "requirements": {
+                      "title": "Audio Asset Requirements",
+                      "description": "Requirements for audio creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "min_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum duration in milliseconds"
+                        },
+                        "max_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum duration in milliseconds"
+                        },
+                        "formats": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mp3",
+                              "aac",
+                              "wav",
+                              "ogg",
+                              "flac"
+                            ]
+                          },
+                          "description": "Accepted audio file formats"
+                        },
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        },
+                        "sample_rates": {
+                          "type": "array",
+                          "items": {
+                            "type": "integer",
+                            "minimum": 1
+                          },
+                          "description": "Accepted sample rates in Hz (e.g., [44100, 48000])"
+                        },
+                        "channels": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo"
+                            ]
+                          },
+                          "description": "Accepted audio channel configurations"
+                        },
+                        "min_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum audio bitrate in kilobits per second"
+                        },
+                        "max_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum audio bitrate in kilobits per second"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Text asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "text"
+                    },
+                    "requirements": {
+                      "title": "Text Asset Requirements",
+                      "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
+                      "type": "object",
+                      "properties": {
+                        "min_length": {
+                          "type": "integer",
+                          "minimum": 0,
+                          "description": "Minimum character length"
+                        },
+                        "max_length": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum character length"
+                        },
+                        "min_lines": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum number of lines"
+                        },
+                        "max_lines": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum number of lines"
+                        },
+                        "character_pattern": {
+                          "type": "string",
+                          "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+                        },
+                        "prohibited_terms": {
+                          "type": "array",
+                          "items": {
+                            "type": "string"
+                          },
+                          "description": "List of prohibited words or phrases"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Markdown asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "markdown"
+                    },
+                    "requirements": {
+                      "title": "Markdown Asset Requirements",
+                      "description": "Requirements for markdown creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "max_length": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum character length"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "HTML asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "html"
+                    },
+                    "requirements": {
+                      "title": "HTML Asset Requirements",
+                      "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
+                      "type": "object",
+                      "properties": {
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes for the HTML asset"
+                        },
+                        "sandbox": {
+                          "type": "string",
+                          "enum": [
+                            "none",
+                            "iframe",
+                            "safeframe",
+                            "fencedframe"
+                          ],
+                          "default": "none",
+                          "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+                        },
+                        "external_resources_allowed": {
+                          "type": "boolean",
+                          "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled."
+                        },
+                        "allowed_external_domains": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "format": "hostname"
+                          },
+                          "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true."
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "CSS asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "css"
+                    },
+                    "requirements": {
+                      "title": "CSS Asset Requirements",
+                      "description": "Requirements for CSS creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "JavaScript asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "javascript"
+                    },
+                    "requirements": {
+                      "title": "JavaScript Asset Requirements",
+                      "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
+                      "type": "object",
+                      "properties": {
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes for the JavaScript asset"
+                        },
+                        "module_type": {
+                          "type": "string",
+                          "enum": [
+                            "script",
+                            "module",
+                            "iife"
+                          ],
+                          "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+                        },
+                        "strict_mode_required": {
+                          "type": "boolean",
+                          "description": "Whether the JavaScript must use strict mode"
+                        },
+                        "external_resources_allowed": {
+                          "type": "boolean",
+                          "description": "Whether the JavaScript can load external resources dynamically"
+                        },
+                        "allowed_external_domains": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "format": "hostname"
+                          },
+                          "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true."
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "VAST asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "vast"
+                    },
+                    "requirements": {
+                      "title": "VAST Asset Requirements",
+                      "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "vast_version": {
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ],
+                          "description": "Required VAST version"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "DAAST asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "daast"
+                    },
+                    "requirements": {
+                      "title": "DAAST Asset Requirements",
+                      "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "daast_version": {
+                          "type": "string",
+                          "enum": [
+                            "1.0"
+                          ],
+                          "description": "Required DAAST version. DAAST 1.0 is the current IAB standard."
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "URL asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "url"
+                    },
+                    "requirements": {
+                      "title": "URL Asset Requirements",
+                      "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
+                      "type": "object",
+                      "properties": {
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "clickthrough",
+                            "landing_page",
+                            "impression_tracker",
+                            "click_tracker",
+                            "viewability_tracker",
+                            "third_party_tracker"
+                          ],
+                          "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum."
+                        },
+                        "protocols": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "https",
+                              "http"
+                            ]
+                          },
+                          "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs."
+                        },
+                        "allowed_domains": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "format": "hostname"
+                          },
+                          "description": "List of allowed domains for the URL"
+                        },
+                        "max_length": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum URL length in characters"
+                        },
+                        "macro_support": {
+                          "type": "boolean",
+                          "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Webhook asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "webhook"
+                    },
+                    "requirements": {
+                      "title": "Webhook Asset Requirements",
+                      "description": "Requirements for webhook creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "methods": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "GET",
+                              "POST"
+                            ]
+                          },
+                          "description": "Allowed HTTP methods"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Brief asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "brief"
+                    }
+                  }
+                },
+                {
+                  "description": "Catalog asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "catalog"
+                    },
+                    "requirements": {
+                      "title": "Catalog Requirements",
+                      "description": "Format-level declaration of what catalog feeds a creative needs. Formats that render product listings, store locators, or promotional content declare which catalog types must be synced and what fields each catalog must provide. Buyers use this to ensure the right catalogs are synced before submitting creatives.",
+                      "type": "object",
+                      "properties": {
+                        "catalog_type": {
+                          "title": "Catalog Type",
+                          "description": "The catalog type this requirement applies to",
+                          "type": "string",
+                          "enum": [
+                            "offering",
+                            "product",
+                            "inventory",
+                            "store",
+                            "promotion",
+                            "hotel",
+                            "flight",
+                            "job",
+                            "vehicle",
+                            "real_estate",
+                            "education",
+                            "destination",
+                            "app"
+                          ]
+                        },
+                        "required": {
+                          "type": "boolean",
+                          "description": "Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.",
+                          "default": true
+                        },
+                        "min_items": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)"
+                        },
+                        "max_items": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum number of items the format can render. Items beyond this limit are ignored. Useful for fixed-slot layouts (e.g., a 3-product card) or feed-size constraints."
+                        },
+                        "required_fields": {
+                          "type": "array",
+                          "description": "Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "feed_formats": {
+                          "type": "array",
+                          "description": "Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.",
+                          "items": {
+                            "title": "Feed Format",
+                            "description": "Catalog feed formats. Determines how the platform parses items from an external feed URL.",
+                            "type": "string",
+                            "enum": [
+                              "google_merchant_center",
+                              "facebook_catalog",
+                              "shopify",
+                              "linkedin_jobs",
+                              "custom"
+                            ]
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "offering_asset_constraints": {
+                          "type": "array",
+                          "description": "Per-item creative asset requirements. Declares what asset groups (headlines, images, videos) each catalog item must provide in its assets array, along with count bounds and per-asset technical constraints. Applicable to 'offering' and all vertical catalog types (hotel, flight, job, etc.) whose items carry typed assets.",
+                          "items": {
+                            "title": "Offering Asset Constraint",
+                            "description": "Declares per-group creative requirements that each offering must satisfy. Allows formats to specify what asset groups (headlines, images, videos) offerings must provide, along with count and per-asset technical constraints.",
+                            "type": "object",
+                            "properties": {
+                              "asset_group_id": {
+                                "type": "string",
+                                "description": "The asset group this constraint applies to. Values are format-defined vocabulary \u2014 each format chooses its own group IDs (e.g., 'headlines', 'images', 'videos'). Buyers discover them via list_creative_formats."
+                              },
+                              "asset_type": {
+                                "title": "Asset Content Type",
+                                "description": "The expected content type for this group.",
+                                "type": "string",
+                                "enum": [
+                                  "image",
+                                  "video",
+                                  "audio",
+                                  "text",
+                                  "markdown",
+                                  "html",
+                                  "css",
+                                  "javascript",
+                                  "vast",
+                                  "daast",
+                                  "url",
+                                  "webhook",
+                                  "brief",
+                                  "catalog"
+                                ]
+                              },
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether this asset group must be present in each offering. Defaults to true.",
+                                "default": true
+                              },
+                              "min_count": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Minimum number of items required in this group."
+                              },
+                              "max_count": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Maximum number of items allowed in this group."
+                              },
+                              "asset_requirements": {
+                                "title": "Asset Requirements",
+                                "description": "Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group.",
+                                "anyOf": [
+                                  {
+                                    "title": "Image Asset Requirements",
+                                    "description": "Requirements for image creative assets. These define the technical constraints for image files.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_width": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                      },
+                                      "max_width": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                      },
+                                      "min_height": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                      },
+                                      "max_height": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                      },
+                                      "unit": {
+                                        "title": "Dimension Unit",
+                                        "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                                        "type": "string",
+                                        "enum": [
+                                          "px",
+                                          "dp",
+                                          "inches",
+                                          "cm",
+                                          "mm",
+                                          "pt"
+                                        ]
+                                      },
+                                      "aspect_ratio": {
+                                        "type": "string",
+                                        "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
+                                        "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')"
+                                      },
+                                      "formats": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "jpg",
+                                            "jpeg",
+                                            "png",
+                                            "gif",
+                                            "webp",
+                                            "svg",
+                                            "avif",
+                                            "tiff",
+                                            "pdf",
+                                            "eps"
+                                          ]
+                                        },
+                                        "description": "Accepted image file formats"
+                                      },
+                                      "min_dpi": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI."
+                                      },
+                                      "bleed": {
+                                        "type": "object",
+                                        "description": "Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.",
+                                        "oneOf": [
+                                          {
+                                            "properties": {
+                                              "uniform": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "description": "Same bleed on all four sides"
+                                              }
+                                            },
+                                            "required": [
+                                              "uniform"
+                                            ],
+                                            "additionalProperties": false
+                                          },
+                                          {
+                                            "properties": {
+                                              "top": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              },
+                                              "right": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              },
+                                              "bottom": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              },
+                                              "left": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              }
+                                            },
+                                            "required": [
+                                              "top",
+                                              "right",
+                                              "bottom",
+                                              "left"
+                                            ],
+                                            "additionalProperties": false
+                                          }
+                                        ]
+                                      },
+                                      "color_space": {
+                                        "type": "string",
+                                        "enum": [
+                                          "rgb",
+                                          "cmyk",
+                                          "grayscale"
+                                        ],
+                                        "description": "Required color space. Print typically requires CMYK."
+                                      },
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      },
+                                      "transparency_required": {
+                                        "type": "boolean",
+                                        "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)"
+                                      },
+                                      "animation_allowed": {
+                                        "type": "boolean",
+                                        "description": "Whether animated images (GIF, animated WebP) are accepted"
+                                      },
+                                      "max_animation_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 0,
+                                        "description": "Maximum animation duration in milliseconds (if animation_allowed is true)"
+                                      },
+                                      "max_weight_grams": {
+                                        "type": "integer",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels."
+                                      }
+                                    },
+                                    "if": {
+                                      "required": [
+                                        "min_dpi"
+                                      ]
+                                    },
+                                    "then": {
+                                      "required": [
+                                        "unit"
+                                      ]
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Video Asset Requirements",
+                                    "description": "Requirements for video creative assets. These define the technical constraints for video files.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_width": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum width in pixels"
+                                      },
+                                      "max_width": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum width in pixels"
+                                      },
+                                      "min_height": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum height in pixels"
+                                      },
+                                      "max_height": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum height in pixels"
+                                      },
+                                      "aspect_ratio": {
+                                        "type": "string",
+                                        "pattern": "^\\d+:\\d+$",
+                                        "description": "Required aspect ratio (e.g., '16:9', '9:16')"
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum duration in milliseconds"
+                                      },
+                                      "max_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum duration in milliseconds"
+                                      },
+                                      "containers": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mp4",
+                                            "webm",
+                                            "mov",
+                                            "avi",
+                                            "mkv"
+                                          ]
+                                        },
+                                        "description": "Accepted video container formats"
+                                      },
+                                      "codecs": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "h264",
+                                            "h265",
+                                            "vp8",
+                                            "vp9",
+                                            "av1",
+                                            "prores"
+                                          ]
+                                        },
+                                        "description": "Accepted video codecs"
+                                      },
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      },
+                                      "min_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum video bitrate in kilobits per second"
+                                      },
+                                      "max_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum video bitrate in kilobits per second"
+                                      },
+                                      "frame_rates": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "number",
+                                          "minimum": 1
+                                        },
+                                        "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])"
+                                      },
+                                      "audio_required": {
+                                        "type": "boolean",
+                                        "description": "Whether the video must include an audio track"
+                                      },
+                                      "frame_rate_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "constant",
+                                          "variable"
+                                        ],
+                                        "description": "Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing."
+                                      },
+                                      "scan_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "progressive",
+                                          "interlaced"
+                                        ],
+                                        "description": "Required scan type. Modern delivery requires progressive scan."
+                                      },
+                                      "gop_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "closed",
+                                          "open"
+                                        ],
+                                        "description": "Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points."
+                                      },
+                                      "min_gop_interval_seconds": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "description": "Minimum keyframe interval in seconds"
+                                      },
+                                      "max_gop_interval_seconds": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "description": "Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals."
+                                      },
+                                      "moov_atom_position": {
+                                        "type": "string",
+                                        "enum": [
+                                          "start",
+                                          "end"
+                                        ],
+                                        "description": "Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+                                      },
+                                      "audio_codecs": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "aac",
+                                            "pcm",
+                                            "ac3",
+                                            "eac3",
+                                            "mp3",
+                                            "opus",
+                                            "vorbis",
+                                            "flac"
+                                          ]
+                                        },
+                                        "description": "Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"
+                                      },
+                                      "audio_sample_rates": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "integer",
+                                          "minimum": 1
+                                        },
+                                        "description": "Accepted audio sample rates in Hz (e.g., [44100, 48000])"
+                                      },
+                                      "audio_channels": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mono",
+                                            "stereo",
+                                            "5.1",
+                                            "7.1"
+                                          ]
+                                        },
+                                        "description": "Accepted audio channel configurations"
+                                      },
+                                      "loudness_lufs": {
+                                        "type": "number",
+                                        "description": "Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)"
+                                      },
+                                      "loudness_tolerance_db": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "description": "Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)"
+                                      },
+                                      "true_peak_dbfs": {
+                                        "type": "number",
+                                        "description": "Maximum true peak level in dBFS (e.g., -2 for broadcast)"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Audio Asset Requirements",
+                                    "description": "Requirements for audio creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum duration in milliseconds"
+                                      },
+                                      "max_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum duration in milliseconds"
+                                      },
+                                      "formats": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mp3",
+                                            "aac",
+                                            "wav",
+                                            "ogg",
+                                            "flac"
+                                          ]
+                                        },
+                                        "description": "Accepted audio file formats"
+                                      },
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      },
+                                      "sample_rates": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "integer",
+                                          "minimum": 1
+                                        },
+                                        "description": "Accepted sample rates in Hz (e.g., [44100, 48000])"
+                                      },
+                                      "channels": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mono",
+                                            "stereo"
+                                          ]
+                                        },
+                                        "description": "Accepted audio channel configurations"
+                                      },
+                                      "min_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum audio bitrate in kilobits per second"
+                                      },
+                                      "max_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum audio bitrate in kilobits per second"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Text Asset Requirements",
+                                    "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_length": {
+                                        "type": "integer",
+                                        "minimum": 0,
+                                        "description": "Minimum character length"
+                                      },
+                                      "max_length": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum character length"
+                                      },
+                                      "min_lines": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum number of lines"
+                                      },
+                                      "max_lines": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum number of lines"
+                                      },
+                                      "character_pattern": {
+                                        "type": "string",
+                                        "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+                                      },
+                                      "prohibited_terms": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string"
+                                        },
+                                        "description": "List of prohibited words or phrases"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Markdown Asset Requirements",
+                                    "description": "Requirements for markdown creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_length": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum character length"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "HTML Asset Requirements",
+                                    "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes for the HTML asset"
+                                      },
+                                      "sandbox": {
+                                        "type": "string",
+                                        "enum": [
+                                          "none",
+                                          "iframe",
+                                          "safeframe",
+                                          "fencedframe"
+                                        ],
+                                        "default": "none",
+                                        "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+                                      },
+                                      "external_resources_allowed": {
+                                        "type": "boolean",
+                                        "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled."
+                                      },
+                                      "allowed_external_domains": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "format": "hostname"
+                                        },
+                                        "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true."
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "CSS Asset Requirements",
+                                    "description": "Requirements for CSS creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "JavaScript Asset Requirements",
+                                    "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes for the JavaScript asset"
+                                      },
+                                      "module_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "script",
+                                          "module",
+                                          "iife"
+                                        ],
+                                        "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+                                      },
+                                      "strict_mode_required": {
+                                        "type": "boolean",
+                                        "description": "Whether the JavaScript must use strict mode"
+                                      },
+                                      "external_resources_allowed": {
+                                        "type": "boolean",
+                                        "description": "Whether the JavaScript can load external resources dynamically"
+                                      },
+                                      "allowed_external_domains": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "format": "hostname"
+                                        },
+                                        "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true."
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "VAST Asset Requirements",
+                                    "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "vast_version": {
+                                        "type": "string",
+                                        "enum": [
+                                          "2.0",
+                                          "3.0",
+                                          "4.0",
+                                          "4.1",
+                                          "4.2"
+                                        ],
+                                        "description": "Required VAST version"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "DAAST Asset Requirements",
+                                    "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "daast_version": {
+                                        "type": "string",
+                                        "enum": [
+                                          "1.0"
+                                        ],
+                                        "description": "Required DAAST version. DAAST 1.0 is the current IAB standard."
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "URL Asset Requirements",
+                                    "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
+                                    "type": "object",
+                                    "properties": {
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "clickthrough",
+                                          "landing_page",
+                                          "impression_tracker",
+                                          "click_tracker",
+                                          "viewability_tracker",
+                                          "third_party_tracker"
+                                        ],
+                                        "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum."
+                                      },
+                                      "protocols": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "https",
+                                            "http"
+                                          ]
+                                        },
+                                        "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs."
+                                      },
+                                      "allowed_domains": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "format": "hostname"
+                                        },
+                                        "description": "List of allowed domains for the URL"
+                                      },
+                                      "max_length": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum URL length in characters"
+                                      },
+                                      "macro_support": {
+                                        "type": "boolean",
+                                        "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Webhook Asset Requirements",
+                                    "description": "Requirements for webhook creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "methods": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "GET",
+                                            "POST"
+                                          ]
+                                        },
+                                        "description": "Allowed HTTP methods"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                ]
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "asset_group_id",
+                              "asset_type"
+                            ],
+                            "additionalProperties": true,
+                            "examples": [
+                              {
+                                "description": "Headline constraint with count bounds",
+                                "data": {
+                                  "asset_group_id": "headlines",
+                                  "asset_type": "text",
+                                  "required": true,
+                                  "min_count": 3,
+                                  "max_count": 15
+                                }
+                              },
+                              {
+                                "description": "Landscape image constraint with count bounds",
+                                "data": {
+                                  "asset_group_id": "images_landscape",
+                                  "asset_type": "image",
+                                  "required": true,
+                                  "min_count": 1,
+                                  "max_count": 20
+                                }
+                              }
+                            ]
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "field_bindings": {
+                          "type": "array",
+                          "description": "Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional \u2014 creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id \u2192 catalog_field), asset pools (asset_id \u2192 asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.",
+                          "items": {
+                            "title": "Catalog Field Binding",
+                            "description": "Maps a format template slot to a catalog item field or typed asset pool. The 'kind' field identifies the binding variant. All bindings are optional \u2014 agents can still infer mappings without them.",
+                            "definitions": {
+                              "ScalarBinding": {
+                                "type": "object",
+                                "description": "Maps an individual format asset to a catalog item field via dot-notation path.",
+                                "properties": {
+                                  "kind": {
+                                    "type": "string",
+                                    "const": "scalar"
+                                  },
+                                  "asset_id": {
+                                    "type": "string",
+                                    "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
+                                  },
+                                  "catalog_field": {
+                                    "type": "string",
+                                    "description": "Dot-notation path to the field on the catalog item (e.g., 'name', 'price.amount', 'location.city')."
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "kind",
+                                  "asset_id",
+                                  "catalog_field"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "AssetPoolBinding": {
+                                "type": "object",
+                                "description": "Maps an individual format asset to a typed asset pool on the catalog item (e.g., images_landscape, images_vertical, logo). The format slot receives the first item in the pool.",
+                                "properties": {
+                                  "kind": {
+                                    "type": "string",
+                                    "const": "asset_pool"
+                                  },
+                                  "asset_id": {
+                                    "type": "string",
+                                    "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
+                                  },
+                                  "asset_group_id": {
+                                    "type": "string",
+                                    "description": "The asset_group_id on the catalog item's assets array to pull from (e.g., 'images_landscape', 'images_vertical', 'logo')."
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "kind",
+                                  "asset_id",
+                                  "asset_group_id"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "oneOf": [
+                              {
+                                "$ref": "#/definitions/ScalarBinding"
+                              },
+                              {
+                                "$ref": "#/definitions/AssetPoolBinding"
+                              },
+                              {
+                                "type": "object",
+                                "description": "A format repeatable_group where each repetition corresponds to one catalog item. Iterates the group over catalog items in catalog item order.",
+                                "properties": {
+                                  "kind": {
+                                    "type": "string",
+                                    "const": "catalog_group"
+                                  },
+                                  "format_group_id": {
+                                    "type": "string",
+                                    "description": "The asset_group_id of a repeatable_group in the format's assets array."
+                                  },
+                                  "catalog_item": {
+                                    "type": "boolean",
+                                    "const": true,
+                                    "description": "Each repetition of the format's repeatable_group maps to one item from the catalog."
+                                  },
+                                  "per_item_bindings": {
+                                    "type": "array",
+                                    "description": "Scalar and asset pool bindings that apply within each repetition of the group. Nested catalog_group bindings are not permitted.",
+                                    "items": {
+                                      "oneOf": [
+                                        {
+                                          "$ref": "#/definitions/ScalarBinding"
+                                        },
+                                        {
+                                          "$ref": "#/definitions/AssetPoolBinding"
+                                        }
+                                      ]
+                                    },
+                                    "minItems": 1
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "kind",
+                                  "format_group_id",
+                                  "catalog_item"
+                                ],
+                                "additionalProperties": true
+                              }
+                            ],
+                            "examples": [
+                              {
+                                "description": "Scalar binding \u2014 hotel name to headline slot",
+                                "data": {
+                                  "kind": "scalar",
+                                  "asset_id": "headline",
+                                  "catalog_field": "name"
+                                }
+                              },
+                              {
+                                "description": "Scalar binding \u2014 nested field (nightly rate)",
+                                "data": {
+                                  "kind": "scalar",
+                                  "asset_id": "price_badge",
+                                  "catalog_field": "price.amount"
+                                }
+                              },
+                              {
+                                "description": "Asset pool binding \u2014 hero image from landscape pool",
+                                "data": {
+                                  "kind": "asset_pool",
+                                  "asset_id": "hero_image",
+                                  "asset_group_id": "images_landscape"
+                                }
+                              },
+                              {
+                                "description": "Asset pool binding \u2014 Snap vertical background from vertical pool",
+                                "data": {
+                                  "kind": "asset_pool",
+                                  "asset_id": "snap_background",
+                                  "asset_group_id": "images_vertical"
+                                }
+                              },
+                              {
+                                "description": "Catalog group binding \u2014 carousel where each slide is one hotel",
+                                "data": {
+                                  "kind": "catalog_group",
+                                  "format_group_id": "slide",
+                                  "catalog_item": true,
+                                  "per_item_bindings": [
+                                    {
+                                      "kind": "scalar",
+                                      "asset_id": "title",
+                                      "catalog_field": "name"
+                                    },
+                                    {
+                                      "kind": "scalar",
+                                      "asset_id": "price",
+                                      "catalog_field": "price.amount"
+                                    },
+                                    {
+                                      "kind": "asset_pool",
+                                      "asset_id": "image",
+                                      "asset_group_id": "images_landscape"
+                                    }
+                                  ]
+                                }
+                              }
+                            ]
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        }
+                      },
+                      "required": [
+                        "catalog_type"
+                      ],
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Repeatable asset group (for carousels, slideshows, playlists, etc.)",
+                  "type": "object",
+                  "properties": {
+                    "item_type": {
+                      "type": "string",
+                      "const": "repeatable_group",
+                      "description": "Discriminator indicating this is a repeatable asset group"
+                    },
+                    "asset_group_id": {
+                      "type": "string",
+                      "description": "Identifier for this asset group (e.g., 'product', 'slide', 'card')"
+                    },
+                    "required": {
+                      "type": "boolean",
+                      "description": "Whether this asset group is required. If true, at least min_count repetitions must be provided."
+                    },
+                    "min_count": {
+                      "type": "integer",
+                      "description": "Minimum number of repetitions required (if group is required) or allowed (if optional)",
+                      "minimum": 0
+                    },
+                    "max_count": {
+                      "type": "integer",
+                      "description": "Maximum number of repetitions allowed",
+                      "minimum": 1
+                    },
+                    "selection_mode": {
+                      "type": "string",
+                      "description": "How the platform uses repetitions of this group. 'sequential' means all items display in order (carousels, playlists). 'optimize' means the platform selects the best-performing combination from alternatives (asset group optimization like Meta Advantage+ or Google Pmax).",
+                      "enum": [
+                        "sequential",
+                        "optimize"
+                      ],
+                      "default": "sequential"
+                    },
+                    "assets": {
+                      "type": "array",
+                      "description": "Assets within each repetition of this group",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "description": "Image asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "image"
+                              },
+                              "requirements": {
+                                "title": "Image Asset Requirements",
+                                "description": "Requirements for image creative assets. These define the technical constraints for image files.",
+                                "type": "object",
+                                "properties": {
+                                  "min_width": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                  },
+                                  "max_width": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                  },
+                                  "min_height": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                  },
+                                  "max_height": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                  },
+                                  "unit": {
+                                    "title": "Dimension Unit",
+                                    "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                                    "type": "string",
+                                    "enum": [
+                                      "px",
+                                      "dp",
+                                      "inches",
+                                      "cm",
+                                      "mm",
+                                      "pt"
+                                    ]
+                                  },
+                                  "aspect_ratio": {
+                                    "type": "string",
+                                    "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
+                                    "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')"
+                                  },
+                                  "formats": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "jpg",
+                                        "jpeg",
+                                        "png",
+                                        "gif",
+                                        "webp",
+                                        "svg",
+                                        "avif",
+                                        "tiff",
+                                        "pdf",
+                                        "eps"
+                                      ]
+                                    },
+                                    "description": "Accepted image file formats"
+                                  },
+                                  "min_dpi": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI."
+                                  },
+                                  "bleed": {
+                                    "type": "object",
+                                    "description": "Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.",
+                                    "oneOf": [
+                                      {
+                                        "properties": {
+                                          "uniform": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "description": "Same bleed on all four sides"
+                                          }
+                                        },
+                                        "required": [
+                                          "uniform"
+                                        ],
+                                        "additionalProperties": false
+                                      },
+                                      {
+                                        "properties": {
+                                          "top": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          },
+                                          "right": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          },
+                                          "bottom": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          },
+                                          "left": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          }
+                                        },
+                                        "required": [
+                                          "top",
+                                          "right",
+                                          "bottom",
+                                          "left"
+                                        ],
+                                        "additionalProperties": false
+                                      }
+                                    ]
+                                  },
+                                  "color_space": {
+                                    "type": "string",
+                                    "enum": [
+                                      "rgb",
+                                      "cmyk",
+                                      "grayscale"
+                                    ],
+                                    "description": "Required color space. Print typically requires CMYK."
+                                  },
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  },
+                                  "transparency_required": {
+                                    "type": "boolean",
+                                    "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)"
+                                  },
+                                  "animation_allowed": {
+                                    "type": "boolean",
+                                    "description": "Whether animated images (GIF, animated WebP) are accepted"
+                                  },
+                                  "max_animation_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 0,
+                                    "description": "Maximum animation duration in milliseconds (if animation_allowed is true)"
+                                  },
+                                  "max_weight_grams": {
+                                    "type": "integer",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels."
+                                  }
+                                },
+                                "if": {
+                                  "required": [
+                                    "min_dpi"
+                                  ]
+                                },
+                                "then": {
+                                  "required": [
+                                    "unit"
+                                  ]
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Video asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "video"
+                              },
+                              "requirements": {
+                                "title": "Video Asset Requirements",
+                                "description": "Requirements for video creative assets. These define the technical constraints for video files.",
+                                "type": "object",
+                                "properties": {
+                                  "min_width": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum width in pixels"
+                                  },
+                                  "max_width": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum width in pixels"
+                                  },
+                                  "min_height": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum height in pixels"
+                                  },
+                                  "max_height": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum height in pixels"
+                                  },
+                                  "aspect_ratio": {
+                                    "type": "string",
+                                    "pattern": "^\\d+:\\d+$",
+                                    "description": "Required aspect ratio (e.g., '16:9', '9:16')"
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum duration in milliseconds"
+                                  },
+                                  "max_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum duration in milliseconds"
+                                  },
+                                  "containers": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mp4",
+                                        "webm",
+                                        "mov",
+                                        "avi",
+                                        "mkv"
+                                      ]
+                                    },
+                                    "description": "Accepted video container formats"
+                                  },
+                                  "codecs": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "h264",
+                                        "h265",
+                                        "vp8",
+                                        "vp9",
+                                        "av1",
+                                        "prores"
+                                      ]
+                                    },
+                                    "description": "Accepted video codecs"
+                                  },
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  },
+                                  "min_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum video bitrate in kilobits per second"
+                                  },
+                                  "max_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum video bitrate in kilobits per second"
+                                  },
+                                  "frame_rates": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "number",
+                                      "minimum": 1
+                                    },
+                                    "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])"
+                                  },
+                                  "audio_required": {
+                                    "type": "boolean",
+                                    "description": "Whether the video must include an audio track"
+                                  },
+                                  "frame_rate_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "constant",
+                                      "variable"
+                                    ],
+                                    "description": "Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing."
+                                  },
+                                  "scan_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "progressive",
+                                      "interlaced"
+                                    ],
+                                    "description": "Required scan type. Modern delivery requires progressive scan."
+                                  },
+                                  "gop_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "closed",
+                                      "open"
+                                    ],
+                                    "description": "Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points."
+                                  },
+                                  "min_gop_interval_seconds": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "Minimum keyframe interval in seconds"
+                                  },
+                                  "max_gop_interval_seconds": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals."
+                                  },
+                                  "moov_atom_position": {
+                                    "type": "string",
+                                    "enum": [
+                                      "start",
+                                      "end"
+                                    ],
+                                    "description": "Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+                                  },
+                                  "audio_codecs": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "aac",
+                                        "pcm",
+                                        "ac3",
+                                        "eac3",
+                                        "mp3",
+                                        "opus",
+                                        "vorbis",
+                                        "flac"
+                                      ]
+                                    },
+                                    "description": "Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"
+                                  },
+                                  "audio_sample_rates": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "integer",
+                                      "minimum": 1
+                                    },
+                                    "description": "Accepted audio sample rates in Hz (e.g., [44100, 48000])"
+                                  },
+                                  "audio_channels": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mono",
+                                        "stereo",
+                                        "5.1",
+                                        "7.1"
+                                      ]
+                                    },
+                                    "description": "Accepted audio channel configurations"
+                                  },
+                                  "loudness_lufs": {
+                                    "type": "number",
+                                    "description": "Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)"
+                                  },
+                                  "loudness_tolerance_db": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)"
+                                  },
+                                  "true_peak_dbfs": {
+                                    "type": "number",
+                                    "description": "Maximum true peak level in dBFS (e.g., -2 for broadcast)"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Audio asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "audio"
+                              },
+                              "requirements": {
+                                "title": "Audio Asset Requirements",
+                                "description": "Requirements for audio creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum duration in milliseconds"
+                                  },
+                                  "max_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum duration in milliseconds"
+                                  },
+                                  "formats": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mp3",
+                                        "aac",
+                                        "wav",
+                                        "ogg",
+                                        "flac"
+                                      ]
+                                    },
+                                    "description": "Accepted audio file formats"
+                                  },
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  },
+                                  "sample_rates": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "integer",
+                                      "minimum": 1
+                                    },
+                                    "description": "Accepted sample rates in Hz (e.g., [44100, 48000])"
+                                  },
+                                  "channels": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mono",
+                                        "stereo"
+                                      ]
+                                    },
+                                    "description": "Accepted audio channel configurations"
+                                  },
+                                  "min_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum audio bitrate in kilobits per second"
+                                  },
+                                  "max_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum audio bitrate in kilobits per second"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Text asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "text"
+                              },
+                              "requirements": {
+                                "title": "Text Asset Requirements",
+                                "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
+                                "type": "object",
+                                "properties": {
+                                  "min_length": {
+                                    "type": "integer",
+                                    "minimum": 0,
+                                    "description": "Minimum character length"
+                                  },
+                                  "max_length": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum character length"
+                                  },
+                                  "min_lines": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum number of lines"
+                                  },
+                                  "max_lines": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum number of lines"
+                                  },
+                                  "character_pattern": {
+                                    "type": "string",
+                                    "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+                                  },
+                                  "prohibited_terms": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string"
+                                    },
+                                    "description": "List of prohibited words or phrases"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Markdown asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "markdown"
+                              },
+                              "requirements": {
+                                "title": "Markdown Asset Requirements",
+                                "description": "Requirements for markdown creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "max_length": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum character length"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "HTML asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "html"
+                              },
+                              "requirements": {
+                                "title": "HTML Asset Requirements",
+                                "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
+                                "type": "object",
+                                "properties": {
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes for the HTML asset"
+                                  },
+                                  "sandbox": {
+                                    "type": "string",
+                                    "enum": [
+                                      "none",
+                                      "iframe",
+                                      "safeframe",
+                                      "fencedframe"
+                                    ],
+                                    "default": "none",
+                                    "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+                                  },
+                                  "external_resources_allowed": {
+                                    "type": "boolean",
+                                    "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled."
+                                  },
+                                  "allowed_external_domains": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "format": "hostname"
+                                    },
+                                    "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true."
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "CSS asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "css"
+                              },
+                              "requirements": {
+                                "title": "CSS Asset Requirements",
+                                "description": "Requirements for CSS creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "JavaScript asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "javascript"
+                              },
+                              "requirements": {
+                                "title": "JavaScript Asset Requirements",
+                                "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
+                                "type": "object",
+                                "properties": {
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes for the JavaScript asset"
+                                  },
+                                  "module_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "script",
+                                      "module",
+                                      "iife"
+                                    ],
+                                    "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+                                  },
+                                  "strict_mode_required": {
+                                    "type": "boolean",
+                                    "description": "Whether the JavaScript must use strict mode"
+                                  },
+                                  "external_resources_allowed": {
+                                    "type": "boolean",
+                                    "description": "Whether the JavaScript can load external resources dynamically"
+                                  },
+                                  "allowed_external_domains": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "format": "hostname"
+                                    },
+                                    "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true."
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "VAST asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "vast"
+                              },
+                              "requirements": {
+                                "title": "VAST Asset Requirements",
+                                "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "vast_version": {
+                                    "type": "string",
+                                    "enum": [
+                                      "2.0",
+                                      "3.0",
+                                      "4.0",
+                                      "4.1",
+                                      "4.2"
+                                    ],
+                                    "description": "Required VAST version"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "DAAST asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "daast"
+                              },
+                              "requirements": {
+                                "title": "DAAST Asset Requirements",
+                                "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "daast_version": {
+                                    "type": "string",
+                                    "enum": [
+                                      "1.0"
+                                    ],
+                                    "description": "Required DAAST version. DAAST 1.0 is the current IAB standard."
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "URL asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "url"
+                              },
+                              "requirements": {
+                                "title": "URL Asset Requirements",
+                                "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
+                                "type": "object",
+                                "properties": {
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "clickthrough",
+                                      "landing_page",
+                                      "impression_tracker",
+                                      "click_tracker",
+                                      "viewability_tracker",
+                                      "third_party_tracker"
+                                    ],
+                                    "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum."
+                                  },
+                                  "protocols": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "https",
+                                        "http"
+                                      ]
+                                    },
+                                    "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs."
+                                  },
+                                  "allowed_domains": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "format": "hostname"
+                                    },
+                                    "description": "List of allowed domains for the URL"
+                                  },
+                                  "max_length": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum URL length in characters"
+                                  },
+                                  "macro_support": {
+                                    "type": "boolean",
+                                    "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Webhook asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "webhook"
+                              },
+                              "requirements": {
+                                "title": "Webhook Asset Requirements",
+                                "description": "Requirements for webhook creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "methods": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "GET",
+                                        "POST"
+                                      ]
+                                    },
+                                    "description": "Allowed HTTP methods"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          }
+                        ]
+                      }
+                    }
+                  },
+                  "required": [
+                    "item_type",
+                    "asset_group_id",
+                    "required",
+                    "min_count",
+                    "max_count",
+                    "assets"
+                  ]
+                }
+              ]
+            }
+          },
+          "delivery": {
+            "type": "object",
+            "description": "Delivery method specifications (e.g., hosted, VAST, third-party tags)",
+            "additionalProperties": true
+          },
+          "supported_macros": {
+            "type": "array",
+            "description": "List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.",
+            "items": {
+              "oneOf": [
+                {
+                  "title": "Universal Macro",
+                  "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                  "type": "string",
+                  "enum": [
+                    "MEDIA_BUY_ID",
+                    "PACKAGE_ID",
+                    "CREATIVE_ID",
+                    "CACHEBUSTER",
+                    "TIMESTAMP",
+                    "CLICK_URL",
+                    "GDPR",
+                    "GDPR_CONSENT",
+                    "US_PRIVACY",
+                    "GPP_STRING",
+                    "GPP_SID",
+                    "IP_ADDRESS",
+                    "LIMIT_AD_TRACKING",
+                    "DEVICE_TYPE",
+                    "OS",
+                    "OS_VERSION",
+                    "DEVICE_MAKE",
+                    "DEVICE_MODEL",
+                    "USER_AGENT",
+                    "APP_BUNDLE",
+                    "APP_NAME",
+                    "COUNTRY",
+                    "REGION",
+                    "CITY",
+                    "ZIP",
+                    "DMA",
+                    "LAT",
+                    "LONG",
+                    "DEVICE_ID",
+                    "DEVICE_ID_TYPE",
+                    "DOMAIN",
+                    "PAGE_URL",
+                    "REFERRER",
+                    "KEYWORDS",
+                    "PLACEMENT_ID",
+                    "FOLD_POSITION",
+                    "AD_WIDTH",
+                    "AD_HEIGHT",
+                    "VIDEO_ID",
+                    "VIDEO_TITLE",
+                    "VIDEO_DURATION",
+                    "VIDEO_CATEGORY",
+                    "CONTENT_GENRE",
+                    "CONTENT_RATING",
+                    "PLAYER_WIDTH",
+                    "PLAYER_HEIGHT",
+                    "POD_POSITION",
+                    "POD_SIZE",
+                    "AD_BREAK_ID",
+                    "STATION_ID",
+                    "COLLECTION_NAME",
+                    "INSTALLMENT_ID",
+                    "AUDIO_DURATION",
+                    "TMPX",
+                    "AXEM",
+                    "CATALOG_ID",
+                    "SKU",
+                    "GTIN",
+                    "OFFERING_ID",
+                    "JOB_ID",
+                    "HOTEL_ID",
+                    "FLIGHT_ID",
+                    "VEHICLE_ID",
+                    "LISTING_ID",
+                    "STORE_ID",
+                    "PROGRAM_ID",
+                    "DESTINATION_ID",
+                    "CREATIVE_VARIANT_ID",
+                    "APP_ITEM_ID"
+                  ],
+                  "enumDescriptions": {
+                    "MEDIA_BUY_ID": "AdCP media buy identifier",
+                    "PACKAGE_ID": "AdCP package identifier",
+                    "CREATIVE_ID": "AdCP creative identifier",
+                    "CACHEBUSTER": "Random number to prevent caching",
+                    "TIMESTAMP": "Unix timestamp in milliseconds",
+                    "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                    "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                    "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                    "US_PRIVACY": "US Privacy (CCPA) string",
+                    "GPP_STRING": "Global Privacy Platform consent string",
+                    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                    "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                    "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                    "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                    "OS_VERSION": "OS version number",
+                    "DEVICE_MAKE": "Device manufacturer",
+                    "DEVICE_MODEL": "Device model identifier",
+                    "USER_AGENT": "Full user agent string",
+                    "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                    "APP_NAME": "Human-readable app name",
+                    "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                    "REGION": "State/province/region code",
+                    "CITY": "City name",
+                    "ZIP": "Postal code",
+                    "DMA": "Nielsen DMA code (US TV markets)",
+                    "LAT": "Latitude coordinate",
+                    "LONG": "Longitude coordinate",
+                    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                    "DOMAIN": "Domain where ad is shown",
+                    "PAGE_URL": "Full page URL (encoded)",
+                    "REFERRER": "HTTP referrer URL",
+                    "KEYWORDS": "Page keywords (comma-separated)",
+                    "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                    "AD_WIDTH": "Ad slot width in pixels",
+                    "AD_HEIGHT": "Ad slot height in pixels",
+                    "VIDEO_ID": "Content video identifier",
+                    "VIDEO_TITLE": "Content video title",
+                    "VIDEO_DURATION": "Content duration in seconds",
+                    "VIDEO_CATEGORY": "IAB content category",
+                    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                    "PLAYER_WIDTH": "Video player width in pixels",
+                    "PLAYER_HEIGHT": "Video player height in pixels",
+                    "POD_POSITION": "Position within ad break",
+                    "POD_SIZE": "Total ads in the ad break",
+                    "AD_BREAK_ID": "Unique ad break identifier",
+                    "STATION_ID": "Radio station or podcast identifier",
+                    "COLLECTION_NAME": "Program or collection name",
+                    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                    "AUDIO_DURATION": "Audio content duration in seconds",
+                    "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                    "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                    "SKU": "Product SKU identifier for the catalog item being rendered",
+                    "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                    "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                    "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                    "STORE_ID": "Store location identifier for the catalog item being rendered",
+                    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                  }
+                },
+                {
+                  "type": "string",
+                  "description": "Custom or publisher-specific macro name"
+                }
+              ]
+            }
+          },
+          "input_format_ids": {
+            "type": "array",
+            "description": "Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.",
+            "items": {
+              "title": "Format ID",
+              "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            }
+          },
+          "output_format_ids": {
+            "type": "array",
+            "description": "Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).",
+            "items": {
+              "title": "Format ID",
+              "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            }
+          },
+          "format_card": {
+            "type": "object",
+            "description": "Optional standard visual card (300x400px) for displaying this format in user interfaces. Can be rendered via preview_creative or pre-generated.",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Creative format defining the card layout (typically format_card_standard)",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "manifest": {
+                "type": "object",
+                "description": "Asset manifest for rendering the card, structure defined by the format",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "manifest"
+            ],
+            "additionalProperties": true
+          },
+          "accessibility": {
+            "type": "object",
+            "description": "Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.",
+            "properties": {
+              "wcag_level": {
+                "title": "WCAG Level",
+                "description": "WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level.",
+                "type": "string",
+                "enum": [
+                  "A",
+                  "AA",
+                  "AAA"
+                ],
+                "enumDescriptions": {
+                  "A": "Minimum level of conformance. Addresses the most basic accessibility barriers.",
+                  "AA": "Addresses the most common barriers for disabled users. Required by most accessibility regulations.",
+                  "AAA": "Highest level of conformance. Addresses the widest range of accessibility barriers."
+                }
+              },
+              "requires_accessible_assets": {
+                "type": "boolean",
+                "description": "When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties."
+              }
+            },
+            "required": [
+              "wcag_level"
+            ]
+          },
+          "supported_disclosure_positions": {
+            "type": "array",
+            "description": "Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees \u2014 creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.",
+            "items": {
+              "title": "Disclosure Position",
+              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+              "type": "string",
+              "enum": [
+                "prominent",
+                "footer",
+                "audio",
+                "subtitle",
+                "overlay",
+                "end_card",
+                "pre_roll",
+                "companion"
+              ]
+            },
+            "minItems": 1,
+            "uniqueItems": true
+          },
+          "disclosure_capabilities": {
+            "type": "array",
+            "description": "Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "position": {
+                  "title": "Disclosure Position",
+                  "description": "The disclosure position",
+                  "type": "string",
+                  "enum": [
+                    "prominent",
+                    "footer",
+                    "audio",
+                    "subtitle",
+                    "overlay",
+                    "end_card",
+                    "pre_roll",
+                    "companion"
+                  ]
+                },
+                "persistence": {
+                  "type": "array",
+                  "description": "Persistence modes this position supports",
+                  "items": {
+                    "title": "Disclosure Persistence",
+                    "description": "How long a disclosure must persist during content playback or display. Different jurisdictions and regulations require different persistence behaviors for AI-generated content labels. When multiple sources specify persistence for the same jurisdiction (e.g., brief and provenance), the most restrictive mode applies: continuous > initial > flexible.",
+                    "type": "string",
+                    "enum": [
+                      "continuous",
+                      "initial",
+                      "flexible"
+                    ],
+                    "enumDescriptions": {
+                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                    }
+                  },
+                  "minItems": 1,
+                  "uniqueItems": true
+                }
+              },
+              "required": [
+                "position",
+                "persistence"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "format_card_detailed": {
+            "type": "object",
+            "description": "Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Creative format defining the detailed card layout (typically format_card_detailed)",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "manifest": {
+                "type": "object",
+                "description": "Asset manifest for rendering the detailed card, structure defined by the format",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "manifest"
+            ],
+            "additionalProperties": true
+          },
+          "reported_metrics": {
+            "type": "array",
+            "description": "Metrics this format can produce in delivery reporting. Buyers receive the intersection of format reported_metrics and product available_metrics. If omitted, the format defers entirely to product-level metric declarations.",
+            "items": {
+              "title": "Available Metric",
+              "description": "Standard delivery and performance metrics available for reporting",
+              "type": "string",
+              "enum": [
+                "impressions",
+                "spend",
+                "clicks",
+                "ctr",
+                "video_completions",
+                "completion_rate",
+                "conversions",
+                "conversion_value",
+                "roas",
+                "cost_per_acquisition",
+                "new_to_brand_rate",
+                "viewability",
+                "engagement_rate",
+                "views",
+                "completed_views",
+                "leads",
+                "reach",
+                "frequency",
+                "grps",
+                "quartile_data",
+                "dooh_metrics",
+                "cost_per_click"
+              ]
+            },
+            "minItems": 1,
+            "uniqueItems": true
+          },
+          "pricing_options": {
+            "type": "array",
+            "description": "Pricing options for this format. Used by transformation and generation agents that charge per format adapted, per image generated, or per unit of work. Present when the request included include_pricing=true and account. Ad servers and library-based agents expose pricing on list_creatives instead.",
+            "items": {
+              "title": "Vendor Pricing Option",
+              "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+              "allOf": [
+                {
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id"
+                  ]
+                },
+                {
+                  "title": "Vendor Pricing",
+                  "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                  "type": "object",
+                  "oneOf": [
+                    {
+                      "title": "CpmPricing",
+                      "description": "Fixed cost per thousand impressions",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "cpm"
+                        },
+                        "cpm": {
+                          "type": "number",
+                          "description": "Cost per thousand impressions",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "cpm",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PercentOfMediaPricing",
+                      "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "percent_of_media"
+                        },
+                        "percent": {
+                          "type": "number",
+                          "description": "Percentage of media spend, e.g. 15 = 15%",
+                          "minimum": 0,
+                          "maximum": 100
+                        },
+                        "max_cpm": {
+                          "type": "number",
+                          "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code for the resulting charge",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "percent",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "FlatFeePricing",
+                      "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "flat_fee"
+                        },
+                        "amount": {
+                          "type": "number",
+                          "description": "Fixed charge for the billing period",
+                          "minimum": 0
+                        },
+                        "period": {
+                          "type": "string",
+                          "enum": [
+                            "monthly",
+                            "quarterly",
+                            "annual",
+                            "campaign"
+                          ],
+                          "description": "Billing period for the flat fee."
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "amount",
+                        "period",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PerUnitPricing",
+                      "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "per_unit"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                        },
+                        "unit_price": {
+                          "type": "number",
+                          "description": "Cost per one unit",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "unit",
+                        "unit_price",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                }
+              ]
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "format_id",
+          "name"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "creative_agents": {
+      "type": "array",
+      "description": "Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
+          },
+          "agent_name": {
+            "type": "string",
+            "description": "Human-readable name for the creative agent"
+          },
+          "capabilities": {
+            "type": "array",
+            "description": "Capabilities this creative agent provides",
+            "items": {
+              "title": "Creative Agent Capability",
+              "description": "Capabilities supported by creative agents for format handling",
+              "type": "string",
+              "enum": [
+                "validation",
+                "assembly",
+                "generation",
+                "preview",
+                "delivery"
+              ]
+            }
+          }
+        },
+        "required": [
+          "agent_url"
+        ]
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "formats"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.256Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/list-creatives-request.json b/schemas/cache/bundled/creative/list-creatives-request.json
new file mode 100644
index 000000000..6dfdd2dd7
--- /dev/null
+++ b/schemas/cache/bundled/creative/list-creatives-request.json
@@ -0,0 +1,578 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Creatives Request",
+  "description": "Request parameters for querying creative assets from a creative library with filtering, sorting, and pagination. Implemented by any agent that hosts a creative library \u2014 creative agents (ad servers, creative platforms) and sales agents that manage creatives.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "filters": {
+      "title": "Creative Filters",
+      "description": "Filter criteria for querying creatives from a creative library. By default, archived creatives are excluded from results. To include archived creatives, explicitly filter by status='archived' or include 'archived' in the statuses array.",
+      "type": "object",
+      "properties": {
+        "accounts": {
+          "type": "array",
+          "description": "Filter creatives by owning accounts. Useful for agencies managing multiple client accounts.",
+          "items": {
+            "title": "Account Reference",
+            "description": "Reference to an account by seller-assigned ID or natural key. Use account_id for explicit accounts (require_operator_auth: true, discovered via list_accounts). Use the natural key (brand + operator) for implicit accounts (require_operator_auth: false, declared via sync_accounts). For sandbox: explicit accounts use account_id (pre-existing test account), implicit accounts use the natural key with sandbox: true.",
+            "type": "object",
+            "oneOf": [
+              {
+                "properties": {
+                  "account_id": {
+                    "type": "string",
+                    "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+                  }
+                },
+                "required": [
+                  "account_id"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "properties": {
+                  "brand": {
+                    "title": "Brand Reference",
+                    "description": "Brand reference identifying the advertiser",
+                    "type": "object",
+                    "properties": {
+                      "domain": {
+                        "type": "string",
+                        "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                        "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                      },
+                      "brand_id": {
+                        "title": "Brand ID",
+                        "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "tide",
+                          "cheerios",
+                          "air_jordan",
+                          "nike",
+                          "pampers"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "domain"
+                    ],
+                    "additionalProperties": false,
+                    "examples": [
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "spark"
+                      },
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "glow"
+                      },
+                      {
+                        "domain": "acme-corp.com"
+                      }
+                    ]
+                  },
+                  "operator": {
+                    "type": "string",
+                    "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "sandbox": {
+                    "type": "boolean",
+                    "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+                    "default": false
+                  }
+                },
+                "required": [
+                  "brand",
+                  "operator"
+                ],
+                "additionalProperties": false
+              }
+            ],
+            "examples": [
+              {
+                "account_id": "acc_acme_001"
+              },
+              {
+                "brand": {
+                  "domain": "acme-corp.com"
+                },
+                "operator": "acme-corp.com"
+              },
+              {
+                "brand": {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                "operator": "pinnacle-media.com"
+              },
+              {
+                "brand": {
+                  "domain": "acme-corp.com"
+                },
+                "operator": "acme-corp.com",
+                "sandbox": true
+              }
+            ]
+          },
+          "minItems": 1
+        },
+        "statuses": {
+          "type": "array",
+          "description": "Filter by creative approval statuses",
+          "items": {
+            "title": "Creative Status",
+            "description": "Lifecycle status of a creative asset in a creative library. See the Creative Protocol specification for transition rules.",
+            "type": "string",
+            "enum": [
+              "processing",
+              "pending_review",
+              "approved",
+              "rejected",
+              "archived"
+            ],
+            "enumDescriptions": {
+              "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
+              "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+              "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+              "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+              "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+            }
+          },
+          "minItems": 1
+        },
+        "tags": {
+          "type": "array",
+          "description": "Filter by creative tags (all tags must match)",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "tags_any": {
+          "type": "array",
+          "description": "Filter by creative tags (any tag must match)",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "name_contains": {
+          "type": "string",
+          "description": "Filter by creative names containing this text (case-insensitive)"
+        },
+        "creative_ids": {
+          "type": "array",
+          "description": "Filter by specific creative IDs",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "maxItems": 100
+        },
+        "created_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter creatives created after this date (ISO 8601)"
+        },
+        "created_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter creatives created before this date (ISO 8601)"
+        },
+        "updated_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter creatives last updated after this date (ISO 8601)"
+        },
+        "updated_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter creatives last updated before this date (ISO 8601)"
+        },
+        "assigned_to_packages": {
+          "type": "array",
+          "description": "Filter creatives assigned to any of these packages. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter.",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "media_buy_ids": {
+          "type": "array",
+          "description": "Filter creatives assigned to any of these media buys. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter.",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "unassigned": {
+          "type": "boolean",
+          "description": "Filter for unassigned creatives when true, assigned creatives when false. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter."
+        },
+        "has_served": {
+          "type": "boolean",
+          "description": "When true, return only creatives that have served at least one impression. When false, return only creatives that have never served."
+        },
+        "concept_ids": {
+          "type": "array",
+          "description": "Filter by creative concept IDs. Concepts group related creatives across sizes and formats (e.g., Flashtalking concepts, Celtra campaign folders, CM360 creative groups).",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "format_ids": {
+          "type": "array",
+          "description": "Filter by structured format IDs. Returns creatives that match any of these formats.",
+          "items": {
+            "title": "Format ID",
+            "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "minItems": 1
+        },
+        "has_variables": {
+          "type": "boolean",
+          "description": "When true, return only creatives with dynamic variables (DCO). When false, return only static creatives."
+        }
+      },
+      "additionalProperties": true
+    },
+    "sort": {
+      "type": "object",
+      "description": "Sorting parameters",
+      "properties": {
+        "field": {
+          "title": "Creative Sort Field",
+          "description": "Field to sort by",
+          "type": "string",
+          "enum": [
+            "created_date",
+            "updated_date",
+            "name",
+            "status",
+            "assignment_count"
+          ],
+          "default": "created_date"
+        },
+        "direction": {
+          "title": "Sort Direction",
+          "description": "Sort direction",
+          "type": "string",
+          "enum": [
+            "asc",
+            "desc"
+          ],
+          "default": "desc"
+        }
+      },
+      "additionalProperties": true
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "include_assignments": {
+      "type": "boolean",
+      "default": true,
+      "description": "Include package assignment information in response"
+    },
+    "include_snapshot": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include a lightweight delivery snapshot per creative (lifetime impressions and last-served date). For detailed performance analytics, use get_creative_delivery."
+    },
+    "include_items": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include items for multi-asset formats like carousels and native ads"
+    },
+    "include_variables": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include dynamic content variable definitions (DCO slots) for each creative"
+    },
+    "include_pricing": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include pricing_options on each creative. Requires account to be provided. When false or omitted, pricing is not computed."
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account reference for pricing and access. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each creative.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "fields": {
+      "type": "array",
+      "description": "Specific fields to include in response (omit for all fields). The 'concept' value returns both concept_id and concept_name.",
+      "minItems": 1,
+      "items": {
+        "type": "string",
+        "enum": [
+          "creative_id",
+          "name",
+          "format_id",
+          "status",
+          "created_date",
+          "updated_date",
+          "tags",
+          "assignments",
+          "snapshot",
+          "items",
+          "variables",
+          "concept",
+          "pricing_options"
+        ]
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "List all approved creatives",
+      "data": {
+        "filters": {
+          "statuses": [
+            "approved"
+          ]
+        }
+      }
+    },
+    {
+      "description": "List creatives in a specific concept matching a format",
+      "data": {
+        "filters": {
+          "concept_ids": [
+            "concept_holiday_2026"
+          ],
+          "format_ids": [
+            {
+              "agent_url": "https://creative.example.com",
+              "id": "display_static",
+              "width": 300,
+              "height": 250
+            }
+          ]
+        },
+        "include_variables": true
+      }
+    },
+    {
+      "description": "Find DCO creatives for dynamic campaigns",
+      "data": {
+        "filters": {
+          "has_variables": true,
+          "statuses": [
+            "approved"
+          ]
+        },
+        "include_variables": true
+      }
+    },
+    {
+      "description": "Lightweight list with minimal fields",
+      "data": {
+        "fields": [
+          "creative_id",
+          "name",
+          "status"
+        ],
+        "include_assignments": false
+      }
+    },
+    {
+      "description": "List creatives with account-specific pricing",
+      "data": {
+        "account": {
+          "account_id": "acct_acme_creative"
+        },
+        "include_pricing": true,
+        "filters": {
+          "statuses": [
+            "approved"
+          ]
+        }
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.259Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/list-creatives-response.json b/schemas/cache/bundled/creative/list-creatives-response.json
new file mode 100644
index 000000000..54d36fc63
--- /dev/null
+++ b/schemas/cache/bundled/creative/list-creatives-response.json
@@ -0,0 +1,7061 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Creatives Response",
+  "description": "Response from creative library query with filtered results, metadata, and optional enriched data",
+  "type": "object",
+  "properties": {
+    "query_summary": {
+      "type": "object",
+      "description": "Summary of the query that was executed",
+      "properties": {
+        "total_matching": {
+          "type": "integer",
+          "description": "Total number of creatives matching filters (across all pages)",
+          "minimum": 0
+        },
+        "returned": {
+          "type": "integer",
+          "description": "Number of creatives returned in this response",
+          "minimum": 0
+        },
+        "filters_applied": {
+          "type": "array",
+          "description": "List of filters that were applied to the query",
+          "items": {
+            "type": "string"
+          }
+        },
+        "sort_applied": {
+          "type": "object",
+          "description": "Sort order that was applied",
+          "properties": {
+            "field": {
+              "type": "string"
+            },
+            "direction": {
+              "title": "Sort Direction",
+              "description": "Sort direction for list queries",
+              "type": "string",
+              "enum": [
+                "asc",
+                "desc"
+              ]
+            }
+          }
+        }
+      },
+      "required": [
+        "total_matching",
+        "returned"
+      ],
+      "additionalProperties": true
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "creatives": {
+      "type": "array",
+      "description": "Array of creative assets matching the query",
+      "items": {
+        "type": "object",
+        "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "Unique identifier for the creative"
+          },
+          "account": {
+            "title": "Account",
+            "description": "Account that owns this creative",
+            "type": "object",
+            "properties": {
+              "account_id": {
+                "type": "string",
+                "description": "Unique identifier for this account"
+              },
+              "name": {
+                "type": "string",
+                "description": "Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')"
+              },
+              "advertiser": {
+                "type": "string",
+                "description": "The advertiser whose rates apply to this account"
+              },
+              "billing_proxy": {
+                "type": "string",
+                "description": "Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)"
+              },
+              "status": {
+                "title": "Account Status",
+                "description": "Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.",
+                "type": "string",
+                "enum": [
+                  "active",
+                  "pending_approval",
+                  "rejected",
+                  "payment_required",
+                  "suspended",
+                  "closed"
+                ],
+                "enumDescriptions": {
+                  "active": "Account is operational and can create media buys",
+                  "pending_approval": "Seller is reviewing the account (credit, contracts)",
+                  "rejected": "Seller declined the account request \u2014 terminal state",
+                  "payment_required": "Credit limit reached or funds depleted",
+                  "suspended": "Was active, now paused \u2014 operations gated",
+                  "closed": "Was active, now terminated \u2014 terminal state"
+                }
+              },
+              "brand": {
+                "title": "Brand Reference",
+                "description": "Brand reference identifying the advertiser",
+                "type": "object",
+                "properties": {
+                  "domain": {
+                    "type": "string",
+                    "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "brand_id": {
+                    "title": "Brand ID",
+                    "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                    "type": "string",
+                    "pattern": "^[a-z0-9_]+$",
+                    "examples": [
+                      "tide",
+                      "cheerios",
+                      "air_jordan",
+                      "nike",
+                      "pampers"
+                    ]
+                  }
+                },
+                "required": [
+                  "domain"
+                ],
+                "additionalProperties": false,
+                "examples": [
+                  {
+                    "domain": "nova-brands.com",
+                    "brand_id": "spark"
+                  },
+                  {
+                    "domain": "nova-brands.com",
+                    "brand_id": "glow"
+                  },
+                  {
+                    "domain": "acme-corp.com"
+                  }
+                ]
+              },
+              "operator": {
+                "type": "string",
+                "description": "Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "billing": {
+                "type": "string",
+                "enum": [
+                  "operator",
+                  "agent",
+                  "advertiser"
+                ],
+                "description": "Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+              },
+              "billing_entity": {
+                "title": "Business Entity",
+                "description": "Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).",
+                "type": "object",
+                "properties": {
+                  "legal_name": {
+                    "type": "string",
+                    "description": "Registered legal name of the business entity",
+                    "maxLength": 200
+                  },
+                  "vat_id": {
+                    "type": "string",
+                    "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+                    "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+                  },
+                  "tax_id": {
+                    "type": "string",
+                    "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+                    "maxLength": 30
+                  },
+                  "registration_number": {
+                    "type": "string",
+                    "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+                    "maxLength": 50
+                  },
+                  "address": {
+                    "type": "object",
+                    "description": "Postal address for invoicing and legal correspondence",
+                    "properties": {
+                      "street": {
+                        "type": "string",
+                        "description": "Street address including building number",
+                        "maxLength": 200
+                      },
+                      "city": {
+                        "type": "string",
+                        "maxLength": 100
+                      },
+                      "postal_code": {
+                        "type": "string",
+                        "maxLength": 20
+                      },
+                      "region": {
+                        "type": "string",
+                        "description": "State, province, or region",
+                        "maxLength": 100
+                      },
+                      "country": {
+                        "type": "string",
+                        "description": "ISO 3166-1 alpha-2 country code",
+                        "pattern": "^[A-Z]{2}$"
+                      }
+                    },
+                    "required": [
+                      "street",
+                      "city",
+                      "postal_code",
+                      "country"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "contacts": {
+                    "type": "array",
+                    "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "billing",
+                            "legal",
+                            "creative",
+                            "general"
+                          ],
+                          "enumDescriptions": {
+                            "billing": "Accounts payable and invoice queries",
+                            "legal": "Contract and compliance matters",
+                            "creative": "Material submission and creative approval",
+                            "general": "Default contact when no specific role applies"
+                          },
+                          "description": "Contact's functional role in the business relationship"
+                        },
+                        "name": {
+                          "type": "string",
+                          "description": "Full name of the contact",
+                          "maxLength": 200
+                        },
+                        "email": {
+                          "type": "string",
+                          "format": "email",
+                          "maxLength": 254
+                        },
+                        "phone": {
+                          "type": "string",
+                          "maxLength": 30
+                        }
+                      },
+                      "required": [
+                        "role"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "maxItems": 10
+                  },
+                  "bank": {
+                    "type": "object",
+                    "writeOnly": true,
+                    "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+                    "properties": {
+                      "account_holder": {
+                        "type": "string",
+                        "description": "Name on the bank account",
+                        "maxLength": 200
+                      },
+                      "iban": {
+                        "type": "string",
+                        "description": "International Bank Account Number (SEPA markets)",
+                        "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+                      },
+                      "bic": {
+                        "type": "string",
+                        "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+                        "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+                      },
+                      "routing_number": {
+                        "type": "string",
+                        "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+                        "maxLength": 30
+                      },
+                      "account_number": {
+                        "type": "string",
+                        "description": "Bank account number for non-SEPA markets",
+                        "maxLength": 30
+                      }
+                    },
+                    "required": [
+                      "account_holder"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "legal_name"
+                ],
+                "additionalProperties": false,
+                "examples": [
+                  {
+                    "description": "German agency with full B2B details",
+                    "data": {
+                      "legal_name": "Pinnacle Media GmbH",
+                      "vat_id": "DE123456789",
+                      "registration_number": "HRB 12345",
+                      "address": {
+                        "street": "Friedrichstrasse 100",
+                        "city": "Berlin",
+                        "postal_code": "10117",
+                        "country": "DE"
+                      },
+                      "contacts": [
+                        {
+                          "role": "billing",
+                          "name": "Sam Adeyemi",
+                          "email": "billing@pinnacle-media.com",
+                          "phone": "+49 30 12345678"
+                        }
+                      ],
+                      "bank": {
+                        "account_holder": "Pinnacle Media GmbH",
+                        "iban": "DE89370400440532013000",
+                        "bic": "COBADEFFXXX"
+                      }
+                    }
+                  },
+                  {
+                    "description": "US advertiser with EIN and domestic bank details",
+                    "data": {
+                      "legal_name": "Acme Corporation",
+                      "tax_id": "12-3456789",
+                      "address": {
+                        "street": "123 Main St",
+                        "city": "New York",
+                        "postal_code": "10001",
+                        "region": "NY",
+                        "country": "US"
+                      },
+                      "contacts": [
+                        {
+                          "role": "billing",
+                          "name": "AP Department",
+                          "email": "ap@acme-corp.com"
+                        }
+                      ],
+                      "bank": {
+                        "account_holder": "Acme Corporation",
+                        "routing_number": "021000021",
+                        "account_number": "123456789"
+                      }
+                    }
+                  }
+                ]
+              },
+              "rate_card": {
+                "type": "string",
+                "description": "Identifier for the rate card applied to this account"
+              },
+              "payment_terms": {
+                "type": "string",
+                "enum": [
+                  "net_15",
+                  "net_30",
+                  "net_45",
+                  "net_60",
+                  "net_90",
+                  "prepay"
+                ],
+                "description": "Payment terms agreed for this account. Binding for all invoices when the account is active."
+              },
+              "credit_limit": {
+                "type": "object",
+                "description": "Maximum outstanding balance allowed",
+                "properties": {
+                  "amount": {
+                    "type": "number",
+                    "minimum": 0
+                  },
+                  "currency": {
+                    "type": "string",
+                    "pattern": "^[A-Z]{3}$"
+                  }
+                },
+                "required": [
+                  "amount",
+                  "currency"
+                ]
+              },
+              "setup": {
+                "type": "object",
+                "description": "Present when status is 'pending_approval'. Contains next steps for completing account activation.",
+                "properties": {
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL where the human can complete the required action (credit application, legal agreement, add funds)."
+                  },
+                  "message": {
+                    "type": "string",
+                    "description": "Human-readable description of what's needed."
+                  },
+                  "expires_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this setup link expires."
+                  }
+                },
+                "required": [
+                  "message"
+                ],
+                "additionalProperties": true
+              },
+              "account_scope": {
+                "type": "string",
+                "enum": [
+                  "operator",
+                  "brand",
+                  "operator_brand",
+                  "agent"
+                ],
+                "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+              },
+              "governance_agents": {
+                "type": "array",
+                "description": "Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses \u2014 use sync_governance to set or update credentials.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "pattern": "^https://",
+                      "description": "Governance agent endpoint URL. Must use HTTPS."
+                    },
+                    "categories": {
+                      "type": "array",
+                      "items": {
+                        "type": "string",
+                        "maxLength": 64,
+                        "pattern": "^[a-z][a-z0-9_]*$"
+                      },
+                      "description": "Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+                      "maxItems": 20
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": false
+                },
+                "maxItems": 10
+              },
+              "reporting_bucket": {
+                "type": "object",
+                "description": "Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix \u2014 bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities).",
+                "properties": {
+                  "protocol": {
+                    "title": "Cloud Storage Protocol",
+                    "description": "Cloud storage protocol",
+                    "type": "string",
+                    "enum": [
+                      "s3",
+                      "gcs",
+                      "azure_blob"
+                    ]
+                  },
+                  "bucket": {
+                    "type": "string",
+                    "description": "Bucket or container name",
+                    "minLength": 3,
+                    "maxLength": 63,
+                    "pattern": "^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$"
+                  },
+                  "prefix": {
+                    "type": "string",
+                    "description": "Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.",
+                    "maxLength": 512,
+                    "pattern": "^[a-zA-Z0-9/_.-]+$",
+                    "examples": [
+                      "accounts/pinnacle/adcp",
+                      "reporting/2024"
+                    ]
+                  },
+                  "region": {
+                    "type": "string",
+                    "description": "Cloud region for the bucket",
+                    "maxLength": 64,
+                    "pattern": "^[a-z0-9-]+$",
+                    "examples": [
+                      "us-east-1",
+                      "europe-west1"
+                    ]
+                  },
+                  "format": {
+                    "type": "string",
+                    "enum": [
+                      "jsonl",
+                      "csv",
+                      "parquet",
+                      "avro",
+                      "orc"
+                    ],
+                    "description": "File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).",
+                    "default": "jsonl"
+                  },
+                  "compression": {
+                    "type": "string",
+                    "enum": [
+                      "gzip",
+                      "none"
+                    ],
+                    "description": "Compression applied to delivered files",
+                    "default": "gzip"
+                  },
+                  "file_retention_days": {
+                    "type": "integer",
+                    "description": "How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.",
+                    "minimum": 1,
+                    "examples": [
+                      14,
+                      30,
+                      90
+                    ]
+                  },
+                  "setup_instructions": {
+                    "type": "string",
+                    "format": "uri",
+                    "pattern": "^https://",
+                    "description": "URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation \u2014 buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery."
+                  }
+                },
+                "required": [
+                  "protocol",
+                  "bucket",
+                  "file_retention_days"
+                ],
+                "additionalProperties": false
+              },
+              "sandbox": {
+                "type": "boolean",
+                "description": "When true, this is a sandbox account \u2014 no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "account_id",
+              "name",
+              "status"
+            ],
+            "additionalProperties": true,
+            "examples": [
+              {
+                "description": "Direct advertiser account",
+                "data": {
+                  "account_id": "acc_acme_direct",
+                  "name": "Acme",
+                  "advertiser": "Acme Corp",
+                  "brand": {
+                    "domain": "acme-corp.com"
+                  },
+                  "operator": "acme-corp.com",
+                  "status": "active",
+                  "billing": "operator",
+                  "account_scope": "brand",
+                  "rate_card": "acme_vip_2024",
+                  "payment_terms": "net_30"
+                }
+              },
+              {
+                "description": "Advertiser account with agency billing proxy",
+                "data": {
+                  "account_id": "acc_acme_pinnacle",
+                  "name": "Acme c/o Pinnacle",
+                  "advertiser": "Acme Corp",
+                  "billing_proxy": "Pinnacle Media",
+                  "brand": {
+                    "domain": "acme-corp.com"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "status": "active",
+                  "billing": "operator",
+                  "account_scope": "operator_brand",
+                  "rate_card": "acme_vip_2024",
+                  "payment_terms": "net_60"
+                }
+              },
+              {
+                "description": "Agency as direct buyer",
+                "data": {
+                  "account_id": "acc_pinnacle",
+                  "name": "Pinnacle",
+                  "advertiser": "Pinnacle Media",
+                  "brand": {
+                    "domain": "pinnacle-media.com"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "status": "active",
+                  "billing": "operator",
+                  "account_scope": "operator",
+                  "rate_card": "agency_standard",
+                  "payment_terms": "net_45"
+                }
+              },
+              {
+                "description": "Account with brand identity and operator (via sync_accounts)",
+                "data": {
+                  "account_id": "acc_spark_001",
+                  "name": "Spark (via Pinnacle)",
+                  "advertiser": "Nova Brands",
+                  "status": "active",
+                  "brand": {
+                    "domain": "nova-brands.com",
+                    "brand_id": "spark"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "billing": "agent",
+                  "account_scope": "operator_brand",
+                  "payment_terms": "net_30"
+                }
+              },
+              {
+                "description": "Pending account awaiting seller approval",
+                "data": {
+                  "account_id": "acc_glow_pending",
+                  "name": "Glow",
+                  "advertiser": "Nova Brands",
+                  "status": "pending_approval",
+                  "brand": {
+                    "domain": "nova-brands.com",
+                    "brand_id": "glow"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "billing": "operator",
+                  "account_scope": "brand"
+                }
+              },
+              {
+                "description": "Agency operates but advertiser is billed directly with structured billing entity",
+                "data": {
+                  "account_id": "acc_acme_direct_bill",
+                  "name": "Acme (billed direct)",
+                  "advertiser": "Acme Corp",
+                  "brand": {
+                    "domain": "acme-corp.com"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "status": "active",
+                  "billing": "advertiser",
+                  "billing_entity": {
+                    "legal_name": "Acme Corporation GmbH",
+                    "vat_id": "DE987654321",
+                    "address": {
+                      "street": "Hauptstrasse 42",
+                      "city": "Munich",
+                      "postal_code": "80331",
+                      "country": "DE"
+                    },
+                    "contacts": [
+                      {
+                        "role": "billing",
+                        "name": "AP Department",
+                        "email": "billing@acme-corp.com"
+                      }
+                    ]
+                  },
+                  "account_scope": "operator_brand",
+                  "payment_terms": "net_30"
+                }
+              }
+            ]
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable creative name"
+          },
+          "format_id": {
+            "title": "Format ID",
+            "description": "Format identifier specifying which format this creative conforms to",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "status": {
+            "title": "Creative Status",
+            "description": "Current approval status of the creative",
+            "type": "string",
+            "enum": [
+              "processing",
+              "pending_review",
+              "approved",
+              "rejected",
+              "archived"
+            ],
+            "enumDescriptions": {
+              "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
+              "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+              "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+              "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+              "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+            }
+          },
+          "created_date": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the creative was created"
+          },
+          "updated_date": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the creative was last modified"
+          },
+          "assets": {
+            "type": "object",
+            "description": "Assets for this creative, keyed by asset_id",
+            "patternProperties": {
+              "^[a-z0-9_]+$": {
+                "anyOf": [
+                  {
+                    "title": "Image Asset",
+                    "description": "Image asset with URL and dimensions",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the image asset"
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels"
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels"
+                      },
+                      "format": {
+                        "type": "string",
+                        "description": "Image file format (jpg, png, gif, webp, etc.)"
+                      },
+                      "alt_text": {
+                        "type": "string",
+                        "description": "Alternative text for accessibility",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "width",
+                      "height"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Video Asset",
+                    "description": "Video asset with URL and technical specifications including audio track properties",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the video asset"
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels"
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels"
+                      },
+                      "duration_ms": {
+                        "type": "integer",
+                        "description": "Video duration in milliseconds",
+                        "minimum": 1
+                      },
+                      "file_size_bytes": {
+                        "type": "integer",
+                        "description": "File size in bytes",
+                        "minimum": 1
+                      },
+                      "container_format": {
+                        "type": "string",
+                        "description": "Video container format (mp4, webm, mov, etc.)"
+                      },
+                      "video_codec": {
+                        "type": "string",
+                        "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                      },
+                      "video_bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Video stream bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "frame_rate": {
+                        "type": "string",
+                        "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                      },
+                      "frame_rate_type": {
+                        "type": "string",
+                        "enum": [
+                          "constant",
+                          "variable"
+                        ],
+                        "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                      },
+                      "scan_type": {
+                        "type": "string",
+                        "enum": [
+                          "progressive",
+                          "interlaced"
+                        ],
+                        "description": "Scan type of the video"
+                      },
+                      "color_space": {
+                        "type": "string",
+                        "enum": [
+                          "rec709",
+                          "rec2020",
+                          "rec2100",
+                          "srgb",
+                          "dci_p3"
+                        ],
+                        "description": "Color space of the video"
+                      },
+                      "hdr_format": {
+                        "type": "string",
+                        "enum": [
+                          "sdr",
+                          "hdr10",
+                          "hdr10_plus",
+                          "hlg",
+                          "dolby_vision"
+                        ],
+                        "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                      },
+                      "chroma_subsampling": {
+                        "type": "string",
+                        "enum": [
+                          "4:2:0",
+                          "4:2:2",
+                          "4:4:4"
+                        ],
+                        "description": "Chroma subsampling format"
+                      },
+                      "video_bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          8,
+                          10,
+                          12
+                        ],
+                        "description": "Video bit depth"
+                      },
+                      "gop_interval_seconds": {
+                        "type": "number",
+                        "description": "GOP/keyframe interval in seconds"
+                      },
+                      "gop_type": {
+                        "type": "string",
+                        "enum": [
+                          "closed",
+                          "open"
+                        ],
+                        "description": "GOP structure type"
+                      },
+                      "moov_atom_position": {
+                        "type": "string",
+                        "enum": [
+                          "start",
+                          "end"
+                        ],
+                        "description": "Position of moov atom in MP4 container"
+                      },
+                      "has_audio": {
+                        "type": "boolean",
+                        "description": "Whether the video contains an audio track"
+                      },
+                      "audio_codec": {
+                        "type": "string",
+                        "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                      },
+                      "audio_sampling_rate_hz": {
+                        "type": "integer",
+                        "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                      },
+                      "audio_channels": {
+                        "type": "string",
+                        "enum": [
+                          "mono",
+                          "stereo",
+                          "5.1",
+                          "7.1"
+                        ],
+                        "description": "Audio channel configuration"
+                      },
+                      "audio_bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          16,
+                          24,
+                          32
+                        ],
+                        "description": "Audio bit depth"
+                      },
+                      "audio_bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Audio bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "audio_loudness_lufs": {
+                        "type": "number",
+                        "description": "Integrated loudness in LUFS"
+                      },
+                      "audio_true_peak_dbfs": {
+                        "type": "number",
+                        "description": "True peak level in dBFS"
+                      },
+                      "captions_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to captions file (WebVTT, SRT, etc.)",
+                        "x-accessibility": true
+                      },
+                      "transcript_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to text transcript of the video content",
+                        "x-accessibility": true
+                      },
+                      "audio_description_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to audio description track for visually impaired users",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "width",
+                      "height"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Audio Asset",
+                    "description": "Audio asset with URL and technical specifications",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the audio asset"
+                      },
+                      "duration_ms": {
+                        "type": "integer",
+                        "description": "Audio duration in milliseconds",
+                        "minimum": 0
+                      },
+                      "file_size_bytes": {
+                        "type": "integer",
+                        "description": "File size in bytes",
+                        "minimum": 1
+                      },
+                      "container_format": {
+                        "type": "string",
+                        "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                      },
+                      "codec": {
+                        "type": "string",
+                        "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                      },
+                      "sampling_rate_hz": {
+                        "type": "integer",
+                        "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                      },
+                      "channels": {
+                        "type": "string",
+                        "enum": [
+                          "mono",
+                          "stereo",
+                          "5.1",
+                          "7.1"
+                        ],
+                        "description": "Channel configuration"
+                      },
+                      "bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          16,
+                          24,
+                          32
+                        ],
+                        "description": "Bit depth"
+                      },
+                      "bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "loudness_lufs": {
+                        "type": "number",
+                        "description": "Integrated loudness in LUFS"
+                      },
+                      "true_peak_dbfs": {
+                        "type": "number",
+                        "description": "True peak level in dBFS"
+                      },
+                      "transcript_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to text transcript of the audio content",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "VAST Asset",
+                    "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "url",
+                            "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL endpoint that returns VAST XML"
+                          },
+                          "vast_version": {
+                            "title": "VAST Version",
+                            "description": "VAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "2.0",
+                              "3.0",
+                              "4.0",
+                              "4.1",
+                              "4.2"
+                            ]
+                          },
+                          "vpaid_enabled": {
+                            "type": "boolean",
+                            "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected video duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "VAST Tracking Event",
+                              "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "rewind",
+                                "skip",
+                                "playerExpand",
+                                "playerCollapse",
+                                "fullscreen",
+                                "exitFullscreen",
+                                "progress",
+                                "notUsed",
+                                "otherAdInteraction",
+                                "interactiveStart",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "closeLinear",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this VAST tag"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "inline",
+                            "description": "Discriminator indicating VAST is delivered as inline XML content"
+                          },
+                          "content": {
+                            "type": "string",
+                            "description": "Inline VAST XML content"
+                          },
+                          "vast_version": {
+                            "title": "VAST Version",
+                            "description": "VAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "2.0",
+                              "3.0",
+                              "4.0",
+                              "4.1",
+                              "4.2"
+                            ]
+                          },
+                          "vpaid_enabled": {
+                            "type": "boolean",
+                            "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected video duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "VAST Tracking Event",
+                              "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "rewind",
+                                "skip",
+                                "playerExpand",
+                                "playerCollapse",
+                                "fullscreen",
+                                "exitFullscreen",
+                                "progress",
+                                "notUsed",
+                                "otherAdInteraction",
+                                "interactiveStart",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "closeLinear",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this VAST tag"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Text Asset",
+                    "description": "Text content asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "Text content"
+                      },
+                      "language": {
+                        "type": "string",
+                        "description": "Language code (e.g., 'en', 'es', 'fr')"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "URL Asset",
+                    "description": "URL reference asset",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL reference"
+                      },
+                      "url_type": {
+                        "title": "URL Asset Type",
+                        "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                        "type": "string",
+                        "enum": [
+                          "clickthrough",
+                          "tracker_pixel",
+                          "tracker_script"
+                        ]
+                      },
+                      "description": {
+                        "type": "string",
+                        "description": "Description of what this URL points to"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "HTML Asset",
+                    "description": "HTML content asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "HTML content"
+                      },
+                      "version": {
+                        "type": "string",
+                        "description": "HTML version (e.g., 'HTML5')"
+                      },
+                      "accessibility": {
+                        "type": "object",
+                        "description": "Self-declared accessibility properties for this opaque creative",
+                        "x-accessibility": true,
+                        "properties": {
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Text alternative describing the creative content"
+                          },
+                          "keyboard_navigable": {
+                            "type": "boolean",
+                            "description": "Whether the creative can be fully operated via keyboard"
+                          },
+                          "motion_control": {
+                            "type": "boolean",
+                            "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                          },
+                          "screen_reader_tested": {
+                            "type": "boolean",
+                            "description": "Whether the creative has been tested with screen readers"
+                          }
+                        }
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "JavaScript Asset",
+                    "description": "JavaScript code asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "JavaScript content"
+                      },
+                      "module_type": {
+                        "title": "JavaScript Module Type",
+                        "description": "JavaScript module type",
+                        "type": "string",
+                        "enum": [
+                          "esm",
+                          "commonjs",
+                          "script"
+                        ]
+                      },
+                      "accessibility": {
+                        "type": "object",
+                        "description": "Self-declared accessibility properties for this opaque creative",
+                        "x-accessibility": true,
+                        "properties": {
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Text alternative describing the creative content"
+                          },
+                          "keyboard_navigable": {
+                            "type": "boolean",
+                            "description": "Whether the creative can be fully operated via keyboard"
+                          },
+                          "motion_control": {
+                            "type": "boolean",
+                            "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                          },
+                          "screen_reader_tested": {
+                            "type": "boolean",
+                            "description": "Whether the creative has been tested with screen readers"
+                          }
+                        }
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Webhook Asset",
+                    "description": "Webhook for server-side dynamic content rendering (DCO)",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Webhook URL to call for dynamic content"
+                      },
+                      "method": {
+                        "title": "HTTP Method",
+                        "description": "HTTP method",
+                        "type": "string",
+                        "enum": [
+                          "GET",
+                          "POST"
+                        ],
+                        "default": "POST"
+                      },
+                      "timeout_ms": {
+                        "type": "integer",
+                        "minimum": 10,
+                        "maximum": 5000,
+                        "default": 500,
+                        "description": "Maximum time to wait for response in milliseconds"
+                      },
+                      "supported_macros": {
+                        "type": "array",
+                        "items": {
+                          "oneOf": [
+                            {
+                              "title": "Universal Macro",
+                              "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                              "type": "string",
+                              "enum": [
+                                "MEDIA_BUY_ID",
+                                "PACKAGE_ID",
+                                "CREATIVE_ID",
+                                "CACHEBUSTER",
+                                "TIMESTAMP",
+                                "CLICK_URL",
+                                "GDPR",
+                                "GDPR_CONSENT",
+                                "US_PRIVACY",
+                                "GPP_STRING",
+                                "GPP_SID",
+                                "IP_ADDRESS",
+                                "LIMIT_AD_TRACKING",
+                                "DEVICE_TYPE",
+                                "OS",
+                                "OS_VERSION",
+                                "DEVICE_MAKE",
+                                "DEVICE_MODEL",
+                                "USER_AGENT",
+                                "APP_BUNDLE",
+                                "APP_NAME",
+                                "COUNTRY",
+                                "REGION",
+                                "CITY",
+                                "ZIP",
+                                "DMA",
+                                "LAT",
+                                "LONG",
+                                "DEVICE_ID",
+                                "DEVICE_ID_TYPE",
+                                "DOMAIN",
+                                "PAGE_URL",
+                                "REFERRER",
+                                "KEYWORDS",
+                                "PLACEMENT_ID",
+                                "FOLD_POSITION",
+                                "AD_WIDTH",
+                                "AD_HEIGHT",
+                                "VIDEO_ID",
+                                "VIDEO_TITLE",
+                                "VIDEO_DURATION",
+                                "VIDEO_CATEGORY",
+                                "CONTENT_GENRE",
+                                "CONTENT_RATING",
+                                "PLAYER_WIDTH",
+                                "PLAYER_HEIGHT",
+                                "POD_POSITION",
+                                "POD_SIZE",
+                                "AD_BREAK_ID",
+                                "STATION_ID",
+                                "COLLECTION_NAME",
+                                "INSTALLMENT_ID",
+                                "AUDIO_DURATION",
+                                "TMPX",
+                                "AXEM",
+                                "CATALOG_ID",
+                                "SKU",
+                                "GTIN",
+                                "OFFERING_ID",
+                                "JOB_ID",
+                                "HOTEL_ID",
+                                "FLIGHT_ID",
+                                "VEHICLE_ID",
+                                "LISTING_ID",
+                                "STORE_ID",
+                                "PROGRAM_ID",
+                                "DESTINATION_ID",
+                                "CREATIVE_VARIANT_ID",
+                                "APP_ITEM_ID"
+                              ],
+                              "enumDescriptions": {
+                                "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                "PACKAGE_ID": "AdCP package identifier",
+                                "CREATIVE_ID": "AdCP creative identifier",
+                                "CACHEBUSTER": "Random number to prevent caching",
+                                "TIMESTAMP": "Unix timestamp in milliseconds",
+                                "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                "US_PRIVACY": "US Privacy (CCPA) string",
+                                "GPP_STRING": "Global Privacy Platform consent string",
+                                "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                "OS_VERSION": "OS version number",
+                                "DEVICE_MAKE": "Device manufacturer",
+                                "DEVICE_MODEL": "Device model identifier",
+                                "USER_AGENT": "Full user agent string",
+                                "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                "APP_NAME": "Human-readable app name",
+                                "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                "REGION": "State/province/region code",
+                                "CITY": "City name",
+                                "ZIP": "Postal code",
+                                "DMA": "Nielsen DMA code (US TV markets)",
+                                "LAT": "Latitude coordinate",
+                                "LONG": "Longitude coordinate",
+                                "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                "DOMAIN": "Domain where ad is shown",
+                                "PAGE_URL": "Full page URL (encoded)",
+                                "REFERRER": "HTTP referrer URL",
+                                "KEYWORDS": "Page keywords (comma-separated)",
+                                "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                "AD_WIDTH": "Ad slot width in pixels",
+                                "AD_HEIGHT": "Ad slot height in pixels",
+                                "VIDEO_ID": "Content video identifier",
+                                "VIDEO_TITLE": "Content video title",
+                                "VIDEO_DURATION": "Content duration in seconds",
+                                "VIDEO_CATEGORY": "IAB content category",
+                                "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                "PLAYER_WIDTH": "Video player width in pixels",
+                                "PLAYER_HEIGHT": "Video player height in pixels",
+                                "POD_POSITION": "Position within ad break",
+                                "POD_SIZE": "Total ads in the ad break",
+                                "AD_BREAK_ID": "Unique ad break identifier",
+                                "STATION_ID": "Radio station or podcast identifier",
+                                "COLLECTION_NAME": "Program or collection name",
+                                "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                "AUDIO_DURATION": "Audio content duration in seconds",
+                                "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                "SKU": "Product SKU identifier for the catalog item being rendered",
+                                "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                              }
+                            },
+                            {
+                              "type": "string",
+                              "description": "Custom or publisher-specific macro name"
+                            }
+                          ]
+                        },
+                        "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                      },
+                      "required_macros": {
+                        "type": "array",
+                        "items": {
+                          "oneOf": [
+                            {
+                              "title": "Universal Macro",
+                              "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                              "type": "string",
+                              "enum": [
+                                "MEDIA_BUY_ID",
+                                "PACKAGE_ID",
+                                "CREATIVE_ID",
+                                "CACHEBUSTER",
+                                "TIMESTAMP",
+                                "CLICK_URL",
+                                "GDPR",
+                                "GDPR_CONSENT",
+                                "US_PRIVACY",
+                                "GPP_STRING",
+                                "GPP_SID",
+                                "IP_ADDRESS",
+                                "LIMIT_AD_TRACKING",
+                                "DEVICE_TYPE",
+                                "OS",
+                                "OS_VERSION",
+                                "DEVICE_MAKE",
+                                "DEVICE_MODEL",
+                                "USER_AGENT",
+                                "APP_BUNDLE",
+                                "APP_NAME",
+                                "COUNTRY",
+                                "REGION",
+                                "CITY",
+                                "ZIP",
+                                "DMA",
+                                "LAT",
+                                "LONG",
+                                "DEVICE_ID",
+                                "DEVICE_ID_TYPE",
+                                "DOMAIN",
+                                "PAGE_URL",
+                                "REFERRER",
+                                "KEYWORDS",
+                                "PLACEMENT_ID",
+                                "FOLD_POSITION",
+                                "AD_WIDTH",
+                                "AD_HEIGHT",
+                                "VIDEO_ID",
+                                "VIDEO_TITLE",
+                                "VIDEO_DURATION",
+                                "VIDEO_CATEGORY",
+                                "CONTENT_GENRE",
+                                "CONTENT_RATING",
+                                "PLAYER_WIDTH",
+                                "PLAYER_HEIGHT",
+                                "POD_POSITION",
+                                "POD_SIZE",
+                                "AD_BREAK_ID",
+                                "STATION_ID",
+                                "COLLECTION_NAME",
+                                "INSTALLMENT_ID",
+                                "AUDIO_DURATION",
+                                "TMPX",
+                                "AXEM",
+                                "CATALOG_ID",
+                                "SKU",
+                                "GTIN",
+                                "OFFERING_ID",
+                                "JOB_ID",
+                                "HOTEL_ID",
+                                "FLIGHT_ID",
+                                "VEHICLE_ID",
+                                "LISTING_ID",
+                                "STORE_ID",
+                                "PROGRAM_ID",
+                                "DESTINATION_ID",
+                                "CREATIVE_VARIANT_ID",
+                                "APP_ITEM_ID"
+                              ],
+                              "enumDescriptions": {
+                                "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                "PACKAGE_ID": "AdCP package identifier",
+                                "CREATIVE_ID": "AdCP creative identifier",
+                                "CACHEBUSTER": "Random number to prevent caching",
+                                "TIMESTAMP": "Unix timestamp in milliseconds",
+                                "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                "US_PRIVACY": "US Privacy (CCPA) string",
+                                "GPP_STRING": "Global Privacy Platform consent string",
+                                "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                "OS_VERSION": "OS version number",
+                                "DEVICE_MAKE": "Device manufacturer",
+                                "DEVICE_MODEL": "Device model identifier",
+                                "USER_AGENT": "Full user agent string",
+                                "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                "APP_NAME": "Human-readable app name",
+                                "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                "REGION": "State/province/region code",
+                                "CITY": "City name",
+                                "ZIP": "Postal code",
+                                "DMA": "Nielsen DMA code (US TV markets)",
+                                "LAT": "Latitude coordinate",
+                                "LONG": "Longitude coordinate",
+                                "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                "DOMAIN": "Domain where ad is shown",
+                                "PAGE_URL": "Full page URL (encoded)",
+                                "REFERRER": "HTTP referrer URL",
+                                "KEYWORDS": "Page keywords (comma-separated)",
+                                "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                "AD_WIDTH": "Ad slot width in pixels",
+                                "AD_HEIGHT": "Ad slot height in pixels",
+                                "VIDEO_ID": "Content video identifier",
+                                "VIDEO_TITLE": "Content video title",
+                                "VIDEO_DURATION": "Content duration in seconds",
+                                "VIDEO_CATEGORY": "IAB content category",
+                                "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                "PLAYER_WIDTH": "Video player width in pixels",
+                                "PLAYER_HEIGHT": "Video player height in pixels",
+                                "POD_POSITION": "Position within ad break",
+                                "POD_SIZE": "Total ads in the ad break",
+                                "AD_BREAK_ID": "Unique ad break identifier",
+                                "STATION_ID": "Radio station or podcast identifier",
+                                "COLLECTION_NAME": "Program or collection name",
+                                "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                "AUDIO_DURATION": "Audio content duration in seconds",
+                                "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                "SKU": "Product SKU identifier for the catalog item being rendered",
+                                "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                              }
+                            },
+                            {
+                              "type": "string",
+                              "description": "Custom or publisher-specific macro name"
+                            }
+                          ]
+                        },
+                        "description": "Universal macros that must be provided for webhook to function"
+                      },
+                      "response_type": {
+                        "title": "Webhook Response Type",
+                        "description": "Expected content type of webhook response",
+                        "type": "string",
+                        "enum": [
+                          "html",
+                          "json",
+                          "xml",
+                          "javascript"
+                        ]
+                      },
+                      "security": {
+                        "type": "object",
+                        "description": "Security configuration for webhook calls",
+                        "properties": {
+                          "method": {
+                            "title": "Webhook Security Method",
+                            "description": "Authentication method",
+                            "type": "string",
+                            "enum": [
+                              "hmac_sha256",
+                              "api_key",
+                              "none"
+                            ]
+                          },
+                          "hmac_header": {
+                            "type": "string",
+                            "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                          },
+                          "api_key_header": {
+                            "type": "string",
+                            "description": "Header name for API key (e.g., 'X-API-Key')"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "response_type",
+                      "security"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "CSS Asset",
+                    "description": "CSS stylesheet asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "CSS content"
+                      },
+                      "media": {
+                        "type": "string",
+                        "description": "CSS media query context (e.g., 'screen', 'print')"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "DAAST Asset",
+                    "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "url",
+                            "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL endpoint that returns DAAST XML"
+                          },
+                          "daast_version": {
+                            "title": "DAAST Version",
+                            "description": "DAAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "1.0",
+                              "1.1"
+                            ]
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected audio duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "DAAST Tracking Event",
+                              "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "skip",
+                                "progress",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this DAAST tag"
+                          },
+                          "companion_ads": {
+                            "type": "boolean",
+                            "description": "Whether companion display ads are included"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "inline",
+                            "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                          },
+                          "content": {
+                            "type": "string",
+                            "description": "Inline DAAST XML content"
+                          },
+                          "daast_version": {
+                            "title": "DAAST Version",
+                            "description": "DAAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "1.0",
+                              "1.1"
+                            ]
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected audio duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "DAAST Tracking Event",
+                              "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "skip",
+                                "progress",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this DAAST tag"
+                          },
+                          "companion_ads": {
+                            "type": "boolean",
+                            "description": "Whether companion display ads are included"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Markdown Asset",
+                    "description": "Markdown-formatted text content following CommonMark specification",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                      },
+                      "language": {
+                        "type": "string",
+                        "description": "Language code (e.g., 'en', 'es', 'fr')"
+                      },
+                      "markdown_flavor": {
+                        "title": "Markdown Flavor",
+                        "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                        "type": "string",
+                        "enum": [
+                          "commonmark",
+                          "gfm"
+                        ],
+                        "default": "commonmark"
+                      },
+                      "allow_raw_html": {
+                        "type": "boolean",
+                        "default": false,
+                        "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Brief Asset",
+                    "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                    "allOf": [
+                      {
+                        "title": "Creative Brief",
+                        "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                        "type": "object",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Campaign or flight name for identification"
+                          },
+                          "objective": {
+                            "type": "string",
+                            "enum": [
+                              "awareness",
+                              "consideration",
+                              "conversion",
+                              "retention",
+                              "engagement"
+                            ],
+                            "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                          },
+                          "tone": {
+                            "type": "string",
+                            "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                          },
+                          "audience": {
+                            "type": "string",
+                            "description": "Target audience description for this campaign"
+                          },
+                          "territory": {
+                            "type": "string",
+                            "description": "Creative territory or positioning the campaign should occupy"
+                          },
+                          "messaging": {
+                            "type": "object",
+                            "description": "Messaging framework for the campaign",
+                            "properties": {
+                              "headline": {
+                                "type": "string",
+                                "description": "Primary headline"
+                              },
+                              "tagline": {
+                                "type": "string",
+                                "description": "Supporting tagline or sub-headline"
+                              },
+                              "cta": {
+                                "type": "string",
+                                "description": "Call-to-action text"
+                              },
+                              "key_messages": {
+                                "type": "array",
+                                "description": "Key messages to communicate in priority order",
+                                "items": {
+                                  "type": "string"
+                                }
+                              }
+                            },
+                            "additionalProperties": true
+                          },
+                          "reference_assets": {
+                            "type": "array",
+                            "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                            "items": {
+                              "title": "Reference Asset",
+                              "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                              "type": "object",
+                              "properties": {
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the reference asset (image, video, or document)"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "style_reference",
+                                    "product_shot",
+                                    "mood_board",
+                                    "example_creative",
+                                    "logo",
+                                    "strategy_doc",
+                                    "storyboard"
+                                  ],
+                                  "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                },
+                                "description": {
+                                  "type": "string",
+                                  "description": "Human-readable description of the asset and how it should inform creative generation"
+                                }
+                              },
+                              "required": [
+                                "url",
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "compliance": {
+                            "type": "object",
+                            "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                            "properties": {
+                              "required_disclosures": {
+                                "type": "array",
+                                "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "text": {
+                                      "type": "string",
+                                      "description": "The disclosure text that must appear in the creative"
+                                    },
+                                    "position": {
+                                      "title": "Disclosure Position",
+                                      "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                      "type": "string",
+                                      "enum": [
+                                        "prominent",
+                                        "footer",
+                                        "audio",
+                                        "subtitle",
+                                        "overlay",
+                                        "end_card",
+                                        "pre_roll",
+                                        "companion"
+                                      ]
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                      "items": {
+                                        "type": "string",
+                                        "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                      },
+                                      "minItems": 1
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                    },
+                                    "language": {
+                                      "type": "string",
+                                      "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                    },
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "text"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              },
+                              "prohibited_claims": {
+                                "type": "array",
+                                "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                "items": {
+                                  "type": "string"
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Catalog Asset",
+                    "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                    "allOf": [
+                      {
+                        "title": "Catalog",
+                        "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                        "type": "object",
+                        "properties": {
+                          "catalog_id": {
+                            "type": "string",
+                            "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                          },
+                          "name": {
+                            "type": "string",
+                            "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                          },
+                          "type": {
+                            "title": "Catalog Type",
+                            "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                            "type": "string",
+                            "enum": [
+                              "offering",
+                              "product",
+                              "inventory",
+                              "store",
+                              "promotion",
+                              "hotel",
+                              "flight",
+                              "job",
+                              "vehicle",
+                              "real_estate",
+                              "education",
+                              "destination",
+                              "app"
+                            ]
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                          },
+                          "feed_format": {
+                            "title": "Feed Format",
+                            "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                            "type": "string",
+                            "enum": [
+                              "google_merchant_center",
+                              "facebook_catalog",
+                              "shopify",
+                              "linkedin_jobs",
+                              "custom"
+                            ]
+                          },
+                          "update_frequency": {
+                            "title": "Update Frequency",
+                            "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                            "type": "string",
+                            "enum": [
+                              "realtime",
+                              "hourly",
+                              "daily",
+                              "weekly"
+                            ]
+                          },
+                          "items": {
+                            "type": "array",
+                            "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                            "items": {
+                              "type": "object"
+                            },
+                            "minItems": 1
+                          },
+                          "ids": {
+                            "type": "array",
+                            "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                            "items": {
+                              "type": "string"
+                            },
+                            "minItems": 1
+                          },
+                          "gtins": {
+                            "type": "array",
+                            "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                            "items": {
+                              "type": "string",
+                              "pattern": "^[0-9]{8,14}$"
+                            },
+                            "minItems": 1
+                          },
+                          "tags": {
+                            "type": "array",
+                            "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                            "items": {
+                              "type": "string"
+                            },
+                            "minItems": 1
+                          },
+                          "category": {
+                            "type": "string",
+                            "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                          },
+                          "query": {
+                            "type": "string",
+                            "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                          },
+                          "conversion_events": {
+                            "type": "array",
+                            "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                            "items": {
+                              "title": "Event Type",
+                              "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                              "type": "string",
+                              "enum": [
+                                "page_view",
+                                "view_content",
+                                "select_content",
+                                "select_item",
+                                "search",
+                                "share",
+                                "add_to_cart",
+                                "remove_from_cart",
+                                "viewed_cart",
+                                "add_to_wishlist",
+                                "initiate_checkout",
+                                "add_payment_info",
+                                "purchase",
+                                "refund",
+                                "lead",
+                                "qualify_lead",
+                                "close_convert_lead",
+                                "disqualify_lead",
+                                "complete_registration",
+                                "subscribe",
+                                "start_trial",
+                                "app_install",
+                                "app_launch",
+                                "contact",
+                                "schedule",
+                                "donate",
+                                "submit_application",
+                                "custom"
+                              ],
+                              "enumDescriptions": {
+                                "page_view": "User viewed a page",
+                                "view_content": "User viewed specific content (product, article, etc.)",
+                                "select_content": "User selected or clicked on content (article, video, etc.)",
+                                "select_item": "User selected a specific product or item from a list",
+                                "search": "User performed a search",
+                                "share": "User shared content via social or messaging",
+                                "add_to_cart": "User added an item to cart",
+                                "remove_from_cart": "User removed an item from cart",
+                                "viewed_cart": "User viewed their shopping cart",
+                                "add_to_wishlist": "User added an item to a wishlist",
+                                "initiate_checkout": "User started checkout process",
+                                "add_payment_info": "User added payment information",
+                                "purchase": "User completed a purchase",
+                                "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                "lead": "User expressed interest (form submission, signup, etc.)",
+                                "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                "close_convert_lead": "Lead converted to a customer or closed deal",
+                                "disqualify_lead": "Lead disqualified or marked as not viable",
+                                "complete_registration": "User completed account registration",
+                                "subscribe": "User subscribed to a service or newsletter",
+                                "start_trial": "User started a free trial",
+                                "app_install": "User installed an application",
+                                "app_launch": "User launched an application",
+                                "contact": "User initiated contact (call, message, etc.)",
+                                "schedule": "User scheduled an appointment or event",
+                                "donate": "User made a donation",
+                                "submit_application": "User submitted an application (loan, job, etc.)",
+                                "custom": "Custom event type (specify in custom_event_name)"
+                              }
+                            },
+                            "minItems": 1,
+                            "uniqueItems": true
+                          },
+                          "content_id_type": {
+                            "title": "Content ID Type",
+                            "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                            "type": "string",
+                            "enum": [
+                              "sku",
+                              "gtin",
+                              "offering_id",
+                              "job_id",
+                              "hotel_id",
+                              "flight_id",
+                              "vehicle_id",
+                              "listing_id",
+                              "store_id",
+                              "program_id",
+                              "destination_id",
+                              "app_id"
+                            ]
+                          },
+                          "feed_field_mappings": {
+                            "type": "array",
+                            "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                            "items": {
+                              "title": "Catalog Field Mapping",
+                              "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                              "type": "object",
+                              "properties": {
+                                "feed_field": {
+                                  "type": "string",
+                                  "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                },
+                                "catalog_field": {
+                                  "type": "string",
+                                  "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                },
+                                "asset_group_id": {
+                                  "type": "string",
+                                  "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                },
+                                "value": {
+                                  "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                },
+                                "transform": {
+                                  "type": "string",
+                                  "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                  "enum": [
+                                    "date",
+                                    "divide",
+                                    "boolean",
+                                    "split"
+                                  ]
+                                },
+                                "format": {
+                                  "type": "string",
+                                  "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                },
+                                "timezone": {
+                                  "type": "string",
+                                  "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                },
+                                "by": {
+                                  "type": "number",
+                                  "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                  "exclusiveMinimum": 0
+                                },
+                                "separator": {
+                                  "type": "string",
+                                  "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                  "default": ","
+                                },
+                                "default": {
+                                  "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "allOf": [
+                                {
+                                  "not": {
+                                    "required": [
+                                      "feed_field",
+                                      "value"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "not": {
+                                    "required": [
+                                      "catalog_field",
+                                      "asset_group_id"
+                                    ]
+                                  }
+                                }
+                              ],
+                              "additionalProperties": true,
+                              "examples": [
+                                {
+                                  "description": "Simple field rename",
+                                  "data": {
+                                    "feed_field": "hotel_name",
+                                    "catalog_field": "name"
+                                  }
+                                },
+                                {
+                                  "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                  "data": {
+                                    "feed_field": "available_from",
+                                    "catalog_field": "valid_from",
+                                    "transform": "date",
+                                    "format": "YYYYMMDD",
+                                    "timezone": "UTC"
+                                  }
+                                },
+                                {
+                                  "description": "Divide cents to dollars",
+                                  "data": {
+                                    "feed_field": "price_cents",
+                                    "catalog_field": "price.amount",
+                                    "transform": "divide",
+                                    "by": 100
+                                  }
+                                },
+                                {
+                                  "description": "Static literal injection \u2014 currency not in feed",
+                                  "data": {
+                                    "catalog_field": "price.currency",
+                                    "value": "USD"
+                                  }
+                                },
+                                {
+                                  "description": "Image URL assigned to typed asset pool",
+                                  "data": {
+                                    "feed_field": "primary_photo_url",
+                                    "asset_group_id": "images_landscape"
+                                  }
+                                },
+                                {
+                                  "description": "Vertical photo URL assigned to vertical pool",
+                                  "data": {
+                                    "feed_field": "portrait_photo_url",
+                                    "asset_group_id": "images_vertical"
+                                  }
+                                },
+                                {
+                                  "description": "Split comma-separated tags to array",
+                                  "data": {
+                                    "feed_field": "amenity_list",
+                                    "catalog_field": "amenities",
+                                    "transform": "split",
+                                    "separator": ","
+                                  }
+                                },
+                                {
+                                  "description": "Boolean coercion with default",
+                                  "data": {
+                                    "feed_field": "is_available",
+                                    "catalog_field": "available",
+                                    "transform": "boolean",
+                                    "default": false
+                                  }
+                                }
+                              ]
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "type"
+                        ],
+                        "additionalProperties": true,
+                        "examples": [
+                          {
+                            "description": "Synced product catalog from Google Merchant Center",
+                            "data": {
+                              "catalog_id": "gmc-primary",
+                              "name": "Primary Product Feed",
+                              "type": "product",
+                              "url": "https://feeds.acmecorp.com/products.xml",
+                              "feed_format": "google_merchant_center",
+                              "update_frequency": "daily"
+                            }
+                          },
+                          {
+                            "description": "Inventory feed for store-level stock data",
+                            "data": {
+                              "catalog_id": "store-inventory",
+                              "name": "Store Inventory",
+                              "type": "inventory",
+                              "url": "https://feeds.acmecorp.com/inventory.json",
+                              "feed_format": "custom",
+                              "update_frequency": "hourly"
+                            }
+                          },
+                          {
+                            "description": "Store locator feed",
+                            "data": {
+                              "catalog_id": "retail-locations",
+                              "name": "Retail Locations",
+                              "type": "store",
+                              "url": "https://feeds.acmecorp.com/stores.json",
+                              "feed_format": "custom",
+                              "update_frequency": "weekly"
+                            }
+                          },
+                          {
+                            "description": "Promotional pricing feed",
+                            "data": {
+                              "catalog_id": "summer-sale",
+                              "name": "Summer Sale Promotions",
+                              "type": "promotion",
+                              "url": "https://feeds.acmecorp.com/promotions.json",
+                              "feed_format": "google_merchant_center",
+                              "update_frequency": "daily"
+                            }
+                          },
+                          {
+                            "description": "Inline offering catalog (no sync needed)",
+                            "data": {
+                              "type": "offering",
+                              "items": [
+                                {
+                                  "offering_id": "summer-sale",
+                                  "name": "Summer Sale",
+                                  "landing_url": "https://acme.com/summer"
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Reference to a previously synced catalog by ID",
+                            "data": {
+                              "catalog_id": "gmc-primary",
+                              "type": "product",
+                              "ids": [
+                                "SKU-12345",
+                                "SKU-67890"
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                            "data": {
+                              "type": "product",
+                              "gtins": [
+                                "00013000006040",
+                                "00013000006057"
+                              ],
+                              "content_id_type": "gtin",
+                              "conversion_events": [
+                                "purchase",
+                                "add_to_cart"
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Inline store catalog with catchment areas",
+                            "data": {
+                              "catalog_id": "retail-locations",
+                              "name": "Retail Locations",
+                              "type": "store",
+                              "items": [
+                                {
+                                  "store_id": "amsterdam-flagship",
+                                  "name": "Amsterdam Flagship",
+                                  "location": {
+                                    "lat": 52.3676,
+                                    "lng": 4.9041
+                                  },
+                                  "catchments": [
+                                    {
+                                      "catchment_id": "walk",
+                                      "travel_time": {
+                                        "value": 10,
+                                        "unit": "min"
+                                      },
+                                      "transport_mode": "walking"
+                                    },
+                                    {
+                                      "catchment_id": "drive",
+                                      "travel_time": {
+                                        "value": 15,
+                                        "unit": "min"
+                                      },
+                                      "transport_mode": "driving"
+                                    }
+                                  ]
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                ]
+              }
+            },
+            "additionalProperties": true
+          },
+          "tags": {
+            "type": "array",
+            "description": "User-defined tags for organization and searchability",
+            "items": {
+              "type": "string"
+            }
+          },
+          "concept_id": {
+            "type": "string",
+            "description": "Creative concept this creative belongs to. Concepts group related creatives across sizes and formats."
+          },
+          "concept_name": {
+            "type": "string",
+            "description": "Human-readable concept name"
+          },
+          "variables": {
+            "type": "array",
+            "description": "Dynamic content variables (DCO slots) for this creative. Included when include_variables=true.",
+            "items": {
+              "title": "Creative Variable",
+              "description": "A dynamic content variable (DCO slot) on a creative. Variables represent content that can change at serve time \u2014 headlines, images, product data, etc.",
+              "type": "object",
+              "properties": {
+                "variable_id": {
+                  "type": "string",
+                  "description": "Variable identifier on the creative platform"
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable variable name"
+                },
+                "variable_type": {
+                  "type": "string",
+                  "enum": [
+                    "text",
+                    "image",
+                    "video",
+                    "audio",
+                    "url",
+                    "number",
+                    "boolean",
+                    "color",
+                    "date"
+                  ],
+                  "description": "Data type of the variable. Each type represents a semantic content slot: text (headlines, body copy), image/video/audio (media URLs), url (clickthrough or tracking URLs), number (prices, counts), boolean (conditional flags like show_discount or is_raining), color (hex color values), date (ISO 8601 date-time for countdowns and offer expirations)."
+                },
+                "default_value": {
+                  "type": "string",
+                  "description": "Default value used when no dynamic value is provided at serve time. All types are string-encoded: text/image/video/audio/url as literal strings, number as decimal (e.g., \"42.99\"), boolean as \"true\"/\"false\", color as \"#RRGGBB\", date as ISO 8601 (e.g., \"2026-12-25T00:00:00Z\")."
+                },
+                "required": {
+                  "type": "boolean",
+                  "description": "Whether this variable must have a value for the creative to serve",
+                  "default": false
+                }
+              },
+              "required": [
+                "variable_id",
+                "name",
+                "variable_type"
+              ],
+              "additionalProperties": true
+            }
+          },
+          "assignments": {
+            "type": "object",
+            "description": "Current package assignments (included when include_assignments=true)",
+            "properties": {
+              "assignment_count": {
+                "type": "integer",
+                "description": "Total number of active package assignments",
+                "minimum": 0
+              },
+              "assigned_packages": {
+                "type": "array",
+                "description": "List of packages this creative is assigned to",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "package_id": {
+                      "type": "string",
+                      "description": "Package identifier"
+                    },
+                    "assigned_date": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this assignment was created"
+                    }
+                  },
+                  "required": [
+                    "package_id",
+                    "assigned_date"
+                  ],
+                  "additionalProperties": true
+                }
+              }
+            },
+            "required": [
+              "assignment_count"
+            ],
+            "additionalProperties": true
+          },
+          "snapshot": {
+            "type": "object",
+            "description": "Lightweight delivery snapshot (included when include_snapshot=true). For detailed performance analytics, use get_creative_delivery.",
+            "properties": {
+              "as_of": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this snapshot was captured by the platform"
+              },
+              "staleness_seconds": {
+                "type": "integer",
+                "description": "Maximum age of this data in seconds. For example, 3600 means the data may be up to 1 hour old.",
+                "minimum": 0
+              },
+              "impressions": {
+                "type": "integer",
+                "description": "Lifetime impressions across all assignments. Not scoped to any date range.",
+                "minimum": 0
+              },
+              "last_served": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Last time this creative served an impression. Absent when the creative has never served."
+              }
+            },
+            "required": [
+              "as_of",
+              "staleness_seconds",
+              "impressions"
+            ],
+            "additionalProperties": true
+          },
+          "snapshot_unavailable_reason": {
+            "type": "string",
+            "description": "Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot data is unavailable for this creative.",
+            "enum": [
+              "SNAPSHOT_UNSUPPORTED",
+              "SNAPSHOT_TEMPORARILY_UNAVAILABLE",
+              "SNAPSHOT_PERMISSION_DENIED"
+            ]
+          },
+          "items": {
+            "type": "array",
+            "description": "Items for multi-asset formats like carousels and native ads (included when include_items=true)",
+            "items": {
+              "title": "Creative Item",
+              "description": "Item within a multi-asset creative format. Used for carousel products, native ad components, and other formats composed of multiple distinct elements.",
+              "oneOf": [
+                {
+                  "type": "object",
+                  "properties": {
+                    "asset_kind": {
+                      "type": "string",
+                      "const": "media",
+                      "description": "Discriminator indicating this is a media asset with content_uri"
+                    },
+                    "asset_type": {
+                      "type": "string",
+                      "description": "Type of asset. Common types: thumbnail_image, product_image, featured_image, logo"
+                    },
+                    "asset_id": {
+                      "type": "string",
+                      "description": "Unique identifier for the asset within the creative"
+                    },
+                    "content_uri": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL for media assets (images, videos, etc.)"
+                    }
+                  },
+                  "required": [
+                    "asset_kind",
+                    "asset_type",
+                    "asset_id",
+                    "content_uri"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "asset_kind": {
+                      "type": "string",
+                      "const": "text",
+                      "description": "Discriminator indicating this is a text asset with content"
+                    },
+                    "asset_type": {
+                      "type": "string",
+                      "description": "Type of asset. Common types: headline, body_text, cta_text, price_text, sponsor_name, author_name, click_url"
+                    },
+                    "asset_id": {
+                      "type": "string",
+                      "description": "Unique identifier for the asset within the creative"
+                    },
+                    "content": {
+                      "oneOf": [
+                        {
+                          "type": "string",
+                          "description": "Single text content value"
+                        },
+                        {
+                          "type": "array",
+                          "description": "Multiple text content values (for A/B testing or variations)",
+                          "items": {
+                            "type": "string"
+                          }
+                        }
+                      ],
+                      "description": "Text content for text-based assets like headlines, body text, CTA text, etc."
+                    }
+                  },
+                  "required": [
+                    "asset_kind",
+                    "asset_type",
+                    "asset_id",
+                    "content"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            }
+          },
+          "pricing_options": {
+            "type": "array",
+            "description": "Pricing options for using this creative (serving, delivery). Used by ad servers and library agents. Transformation agents expose format-level pricing on list_creative_formats instead. Present when include_pricing=true and account provided. The buyer passes the applied pricing_option_id in report_usage.",
+            "items": {
+              "title": "Vendor Pricing Option",
+              "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+              "allOf": [
+                {
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id"
+                  ]
+                },
+                {
+                  "title": "Vendor Pricing",
+                  "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                  "type": "object",
+                  "oneOf": [
+                    {
+                      "title": "CpmPricing",
+                      "description": "Fixed cost per thousand impressions",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "cpm"
+                        },
+                        "cpm": {
+                          "type": "number",
+                          "description": "Cost per thousand impressions",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "cpm",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PercentOfMediaPricing",
+                      "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "percent_of_media"
+                        },
+                        "percent": {
+                          "type": "number",
+                          "description": "Percentage of media spend, e.g. 15 = 15%",
+                          "minimum": 0,
+                          "maximum": 100
+                        },
+                        "max_cpm": {
+                          "type": "number",
+                          "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code for the resulting charge",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "percent",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "FlatFeePricing",
+                      "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "flat_fee"
+                        },
+                        "amount": {
+                          "type": "number",
+                          "description": "Fixed charge for the billing period",
+                          "minimum": 0
+                        },
+                        "period": {
+                          "type": "string",
+                          "enum": [
+                            "monthly",
+                            "quarterly",
+                            "annual",
+                            "campaign"
+                          ],
+                          "description": "Billing period for the flat fee."
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "amount",
+                        "period",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PerUnitPricing",
+                      "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "per_unit"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                        },
+                        "unit_price": {
+                          "type": "number",
+                          "description": "Cost per one unit",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "unit",
+                        "unit_price",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                }
+              ]
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "creative_id",
+          "name",
+          "format_id",
+          "status",
+          "created_date",
+          "updated_date"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "format_summary": {
+      "type": "object",
+      "description": "Breakdown of creatives by format. Keys are agent-defined format identifiers, optionally including dimensions (e.g., 'display_static_300x250', 'video_30s_vast'). Key construction is platform-specific \u2014 there is no required format.",
+      "patternProperties": {
+        "^[a-zA-Z0-9_-]+$": {
+          "type": "integer",
+          "description": "Number of creatives with this format",
+          "minimum": 0
+        }
+      },
+      "additionalProperties": true
+    },
+    "status_summary": {
+      "type": "object",
+      "description": "Breakdown of creatives by status",
+      "properties": {
+        "processing": {
+          "type": "integer",
+          "description": "Number of creatives being processed",
+          "minimum": 0
+        },
+        "approved": {
+          "type": "integer",
+          "description": "Number of approved creatives",
+          "minimum": 0
+        },
+        "pending_review": {
+          "type": "integer",
+          "description": "Number of creatives pending review",
+          "minimum": 0
+        },
+        "rejected": {
+          "type": "integer",
+          "description": "Number of rejected creatives",
+          "minimum": 0
+        },
+        "archived": {
+          "type": "integer",
+          "description": "Number of archived creatives",
+          "minimum": 0
+        }
+      },
+      "additionalProperties": true
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors (e.g., invalid filters, account not found)",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "query_summary",
+    "pagination",
+    "creatives"
+  ],
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Library query with creatives and variables",
+      "data": {
+        "query_summary": {
+          "total_matching": 2,
+          "returned": 2,
+          "filters_applied": [
+            "concept_ids=concept_holiday_2026",
+            "statuses=approved"
+          ]
+        },
+        "pagination": {
+          "has_more": false,
+          "total_count": 2
+        },
+        "creatives": [
+          {
+            "creative_id": "ft_88201",
+            "name": "Holiday Sale - Medium Rectangle",
+            "format_id": {
+              "agent_url": "https://creative.example.com",
+              "id": "display_static",
+              "width": 300,
+              "height": 250
+            },
+            "status": "approved",
+            "created_date": "2026-01-10T14:00:00Z",
+            "updated_date": "2026-02-20T09:30:00Z",
+            "assets": {
+              "banner_image": {
+                "url": "https://cdn.example.com/holiday_300x250.png",
+                "width": 300,
+                "height": 250
+              },
+              "clickthrough_url": {
+                "url": "https://acmecorp.example.com/holiday-sale"
+              }
+            },
+            "tags": [
+              "holiday_2026",
+              "display"
+            ],
+            "concept_id": "concept_holiday_2026",
+            "concept_name": "Holiday 2026 Campaign",
+            "variables": [
+              {
+                "variable_id": "headline_text",
+                "name": "Headline",
+                "variable_type": "text",
+                "default_value": "Holiday Sale - 50% Off",
+                "required": true
+              },
+              {
+                "variable_id": "hero_image",
+                "name": "Hero Image",
+                "variable_type": "image",
+                "required": false
+              }
+            ]
+          },
+          {
+            "creative_id": "ft_88202",
+            "name": "Holiday Sale - Leaderboard",
+            "format_id": {
+              "agent_url": "https://creative.example.com",
+              "id": "display_static",
+              "width": 728,
+              "height": 90
+            },
+            "status": "approved",
+            "created_date": "2026-01-10T14:30:00Z",
+            "updated_date": "2026-02-20T09:35:00Z",
+            "assets": {
+              "banner_image": {
+                "url": "https://cdn.example.com/holiday_728x90.png",
+                "width": 728,
+                "height": 90
+              },
+              "clickthrough_url": {
+                "url": "https://acmecorp.example.com/holiday-sale"
+              }
+            },
+            "tags": [
+              "holiday_2026",
+              "display"
+            ],
+            "concept_id": "concept_holiday_2026",
+            "concept_name": "Holiday 2026 Campaign",
+            "variables": []
+          }
+        ],
+        "format_summary": {
+          "display_static_300x250": 1,
+          "display_static_728x90": 1
+        },
+        "status_summary": {
+          "approved": 2,
+          "pending_review": 0,
+          "rejected": 0,
+          "archived": 0
+        }
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.267Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/preview-creative-request.json b/schemas/cache/bundled/creative/preview-creative-request.json
new file mode 100644
index 000000000..6339672de
--- /dev/null
+++ b/schemas/cache/bundled/creative/preview-creative-request.json
@@ -0,0 +1,12628 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Preview Creative Request",
+  "description": "Request to generate previews of creative manifests. Uses request_type to select single, batch, or variant mode.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "request_type": {
+      "type": "string",
+      "enum": [
+        "single",
+        "batch",
+        "variant"
+      ],
+      "description": "Preview mode. 'single' previews one creative manifest. 'batch' previews multiple creatives in one call. 'variant' replays a post-flight variant by ID."
+    },
+    "creative_manifest": {
+      "title": "Creative Manifest",
+      "description": "Complete creative manifest with all required assets for the format. Required when request_type is 'single'. Also accepted per item in batch mode.",
+      "type": "object",
+      "properties": {
+        "format_id": {
+          "title": "Format ID",
+          "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+          "type": "object",
+          "properties": {
+            "agent_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+            },
+            "id": {
+              "type": "string",
+              "pattern": "^[a-zA-Z0-9_-]+$",
+              "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+            },
+            "width": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "height": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "duration_ms": {
+              "type": "number",
+              "minimum": 1,
+              "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+            }
+          },
+          "required": [
+            "agent_url",
+            "id"
+          ],
+          "additionalProperties": true,
+          "dependencies": {
+            "width": [
+              "height"
+            ],
+            "height": [
+              "width"
+            ]
+          }
+        },
+        "assets": {
+          "type": "object",
+          "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+          "patternProperties": {
+            "^[a-z0-9_]+$": {
+              "anyOf": [
+                {
+                  "title": "Image Asset",
+                  "description": "Image asset with URL and dimensions",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the image asset"
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels"
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels"
+                    },
+                    "format": {
+                      "type": "string",
+                      "description": "Image file format (jpg, png, gif, webp, etc.)"
+                    },
+                    "alt_text": {
+                      "type": "string",
+                      "description": "Alternative text for accessibility",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "width",
+                    "height"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Video Asset",
+                  "description": "Video asset with URL and technical specifications including audio track properties",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the video asset"
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels"
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels"
+                    },
+                    "duration_ms": {
+                      "type": "integer",
+                      "description": "Video duration in milliseconds",
+                      "minimum": 1
+                    },
+                    "file_size_bytes": {
+                      "type": "integer",
+                      "description": "File size in bytes",
+                      "minimum": 1
+                    },
+                    "container_format": {
+                      "type": "string",
+                      "description": "Video container format (mp4, webm, mov, etc.)"
+                    },
+                    "video_codec": {
+                      "type": "string",
+                      "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                    },
+                    "video_bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Video stream bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "frame_rate": {
+                      "type": "string",
+                      "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                    },
+                    "frame_rate_type": {
+                      "type": "string",
+                      "enum": [
+                        "constant",
+                        "variable"
+                      ],
+                      "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                    },
+                    "scan_type": {
+                      "type": "string",
+                      "enum": [
+                        "progressive",
+                        "interlaced"
+                      ],
+                      "description": "Scan type of the video"
+                    },
+                    "color_space": {
+                      "type": "string",
+                      "enum": [
+                        "rec709",
+                        "rec2020",
+                        "rec2100",
+                        "srgb",
+                        "dci_p3"
+                      ],
+                      "description": "Color space of the video"
+                    },
+                    "hdr_format": {
+                      "type": "string",
+                      "enum": [
+                        "sdr",
+                        "hdr10",
+                        "hdr10_plus",
+                        "hlg",
+                        "dolby_vision"
+                      ],
+                      "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                    },
+                    "chroma_subsampling": {
+                      "type": "string",
+                      "enum": [
+                        "4:2:0",
+                        "4:2:2",
+                        "4:4:4"
+                      ],
+                      "description": "Chroma subsampling format"
+                    },
+                    "video_bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        8,
+                        10,
+                        12
+                      ],
+                      "description": "Video bit depth"
+                    },
+                    "gop_interval_seconds": {
+                      "type": "number",
+                      "description": "GOP/keyframe interval in seconds"
+                    },
+                    "gop_type": {
+                      "type": "string",
+                      "enum": [
+                        "closed",
+                        "open"
+                      ],
+                      "description": "GOP structure type"
+                    },
+                    "moov_atom_position": {
+                      "type": "string",
+                      "enum": [
+                        "start",
+                        "end"
+                      ],
+                      "description": "Position of moov atom in MP4 container"
+                    },
+                    "has_audio": {
+                      "type": "boolean",
+                      "description": "Whether the video contains an audio track"
+                    },
+                    "audio_codec": {
+                      "type": "string",
+                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                    },
+                    "audio_sampling_rate_hz": {
+                      "type": "integer",
+                      "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                    },
+                    "audio_channels": {
+                      "type": "string",
+                      "enum": [
+                        "mono",
+                        "stereo",
+                        "5.1",
+                        "7.1"
+                      ],
+                      "description": "Audio channel configuration"
+                    },
+                    "audio_bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        16,
+                        24,
+                        32
+                      ],
+                      "description": "Audio bit depth"
+                    },
+                    "audio_bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Audio bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "audio_loudness_lufs": {
+                      "type": "number",
+                      "description": "Integrated loudness in LUFS"
+                    },
+                    "audio_true_peak_dbfs": {
+                      "type": "number",
+                      "description": "True peak level in dBFS"
+                    },
+                    "captions_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to captions file (WebVTT, SRT, etc.)",
+                      "x-accessibility": true
+                    },
+                    "transcript_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to text transcript of the video content",
+                      "x-accessibility": true
+                    },
+                    "audio_description_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to audio description track for visually impaired users",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "width",
+                    "height"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Audio Asset",
+                  "description": "Audio asset with URL and technical specifications",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the audio asset"
+                    },
+                    "duration_ms": {
+                      "type": "integer",
+                      "description": "Audio duration in milliseconds",
+                      "minimum": 0
+                    },
+                    "file_size_bytes": {
+                      "type": "integer",
+                      "description": "File size in bytes",
+                      "minimum": 1
+                    },
+                    "container_format": {
+                      "type": "string",
+                      "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                    },
+                    "codec": {
+                      "type": "string",
+                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                    },
+                    "sampling_rate_hz": {
+                      "type": "integer",
+                      "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                    },
+                    "channels": {
+                      "type": "string",
+                      "enum": [
+                        "mono",
+                        "stereo",
+                        "5.1",
+                        "7.1"
+                      ],
+                      "description": "Channel configuration"
+                    },
+                    "bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        16,
+                        24,
+                        32
+                      ],
+                      "description": "Bit depth"
+                    },
+                    "bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "loudness_lufs": {
+                      "type": "number",
+                      "description": "Integrated loudness in LUFS"
+                    },
+                    "true_peak_dbfs": {
+                      "type": "number",
+                      "description": "True peak level in dBFS"
+                    },
+                    "transcript_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to text transcript of the audio content",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "VAST Asset",
+                  "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL endpoint that returns VAST XML"
+                        },
+                        "vast_version": {
+                          "title": "VAST Version",
+                          "description": "VAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ]
+                        },
+                        "vpaid_enabled": {
+                          "type": "boolean",
+                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected video duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "VAST Tracking Event",
+                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "rewind",
+                              "skip",
+                              "playerExpand",
+                              "playerCollapse",
+                              "fullscreen",
+                              "exitFullscreen",
+                              "progress",
+                              "notUsed",
+                              "otherAdInteraction",
+                              "interactiveStart",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "closeLinear",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this VAST tag"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "inline",
+                          "description": "Discriminator indicating VAST is delivered as inline XML content"
+                        },
+                        "content": {
+                          "type": "string",
+                          "description": "Inline VAST XML content"
+                        },
+                        "vast_version": {
+                          "title": "VAST Version",
+                          "description": "VAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ]
+                        },
+                        "vpaid_enabled": {
+                          "type": "boolean",
+                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected video duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "VAST Tracking Event",
+                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "rewind",
+                              "skip",
+                              "playerExpand",
+                              "playerCollapse",
+                              "fullscreen",
+                              "exitFullscreen",
+                              "progress",
+                              "notUsed",
+                              "otherAdInteraction",
+                              "interactiveStart",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "closeLinear",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this VAST tag"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Text Asset",
+                  "description": "Text content asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "Text content"
+                    },
+                    "language": {
+                      "type": "string",
+                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "URL Asset",
+                  "description": "URL reference asset",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL reference"
+                    },
+                    "url_type": {
+                      "title": "URL Asset Type",
+                      "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                      "type": "string",
+                      "enum": [
+                        "clickthrough",
+                        "tracker_pixel",
+                        "tracker_script"
+                      ]
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Description of what this URL points to"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "HTML Asset",
+                  "description": "HTML content asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "HTML content"
+                    },
+                    "version": {
+                      "type": "string",
+                      "description": "HTML version (e.g., 'HTML5')"
+                    },
+                    "accessibility": {
+                      "type": "object",
+                      "description": "Self-declared accessibility properties for this opaque creative",
+                      "x-accessibility": true,
+                      "properties": {
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Text alternative describing the creative content"
+                        },
+                        "keyboard_navigable": {
+                          "type": "boolean",
+                          "description": "Whether the creative can be fully operated via keyboard"
+                        },
+                        "motion_control": {
+                          "type": "boolean",
+                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                        },
+                        "screen_reader_tested": {
+                          "type": "boolean",
+                          "description": "Whether the creative has been tested with screen readers"
+                        }
+                      }
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "JavaScript Asset",
+                  "description": "JavaScript code asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "JavaScript content"
+                    },
+                    "module_type": {
+                      "title": "JavaScript Module Type",
+                      "description": "JavaScript module type",
+                      "type": "string",
+                      "enum": [
+                        "esm",
+                        "commonjs",
+                        "script"
+                      ]
+                    },
+                    "accessibility": {
+                      "type": "object",
+                      "description": "Self-declared accessibility properties for this opaque creative",
+                      "x-accessibility": true,
+                      "properties": {
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Text alternative describing the creative content"
+                        },
+                        "keyboard_navigable": {
+                          "type": "boolean",
+                          "description": "Whether the creative can be fully operated via keyboard"
+                        },
+                        "motion_control": {
+                          "type": "boolean",
+                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                        },
+                        "screen_reader_tested": {
+                          "type": "boolean",
+                          "description": "Whether the creative has been tested with screen readers"
+                        }
+                      }
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Webhook Asset",
+                  "description": "Webhook for server-side dynamic content rendering (DCO)",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "Webhook URL to call for dynamic content"
+                    },
+                    "method": {
+                      "title": "HTTP Method",
+                      "description": "HTTP method",
+                      "type": "string",
+                      "enum": [
+                        "GET",
+                        "POST"
+                      ],
+                      "default": "POST"
+                    },
+                    "timeout_ms": {
+                      "type": "integer",
+                      "minimum": 10,
+                      "maximum": 5000,
+                      "default": 500,
+                      "description": "Maximum time to wait for response in milliseconds"
+                    },
+                    "supported_macros": {
+                      "type": "array",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "title": "Universal Macro",
+                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                            "type": "string",
+                            "enum": [
+                              "MEDIA_BUY_ID",
+                              "PACKAGE_ID",
+                              "CREATIVE_ID",
+                              "CACHEBUSTER",
+                              "TIMESTAMP",
+                              "CLICK_URL",
+                              "GDPR",
+                              "GDPR_CONSENT",
+                              "US_PRIVACY",
+                              "GPP_STRING",
+                              "GPP_SID",
+                              "IP_ADDRESS",
+                              "LIMIT_AD_TRACKING",
+                              "DEVICE_TYPE",
+                              "OS",
+                              "OS_VERSION",
+                              "DEVICE_MAKE",
+                              "DEVICE_MODEL",
+                              "USER_AGENT",
+                              "APP_BUNDLE",
+                              "APP_NAME",
+                              "COUNTRY",
+                              "REGION",
+                              "CITY",
+                              "ZIP",
+                              "DMA",
+                              "LAT",
+                              "LONG",
+                              "DEVICE_ID",
+                              "DEVICE_ID_TYPE",
+                              "DOMAIN",
+                              "PAGE_URL",
+                              "REFERRER",
+                              "KEYWORDS",
+                              "PLACEMENT_ID",
+                              "FOLD_POSITION",
+                              "AD_WIDTH",
+                              "AD_HEIGHT",
+                              "VIDEO_ID",
+                              "VIDEO_TITLE",
+                              "VIDEO_DURATION",
+                              "VIDEO_CATEGORY",
+                              "CONTENT_GENRE",
+                              "CONTENT_RATING",
+                              "PLAYER_WIDTH",
+                              "PLAYER_HEIGHT",
+                              "POD_POSITION",
+                              "POD_SIZE",
+                              "AD_BREAK_ID",
+                              "STATION_ID",
+                              "COLLECTION_NAME",
+                              "INSTALLMENT_ID",
+                              "AUDIO_DURATION",
+                              "TMPX",
+                              "AXEM",
+                              "CATALOG_ID",
+                              "SKU",
+                              "GTIN",
+                              "OFFERING_ID",
+                              "JOB_ID",
+                              "HOTEL_ID",
+                              "FLIGHT_ID",
+                              "VEHICLE_ID",
+                              "LISTING_ID",
+                              "STORE_ID",
+                              "PROGRAM_ID",
+                              "DESTINATION_ID",
+                              "CREATIVE_VARIANT_ID",
+                              "APP_ITEM_ID"
+                            ],
+                            "enumDescriptions": {
+                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                              "PACKAGE_ID": "AdCP package identifier",
+                              "CREATIVE_ID": "AdCP creative identifier",
+                              "CACHEBUSTER": "Random number to prevent caching",
+                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                              "US_PRIVACY": "US Privacy (CCPA) string",
+                              "GPP_STRING": "Global Privacy Platform consent string",
+                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                              "OS_VERSION": "OS version number",
+                              "DEVICE_MAKE": "Device manufacturer",
+                              "DEVICE_MODEL": "Device model identifier",
+                              "USER_AGENT": "Full user agent string",
+                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                              "APP_NAME": "Human-readable app name",
+                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                              "REGION": "State/province/region code",
+                              "CITY": "City name",
+                              "ZIP": "Postal code",
+                              "DMA": "Nielsen DMA code (US TV markets)",
+                              "LAT": "Latitude coordinate",
+                              "LONG": "Longitude coordinate",
+                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                              "DOMAIN": "Domain where ad is shown",
+                              "PAGE_URL": "Full page URL (encoded)",
+                              "REFERRER": "HTTP referrer URL",
+                              "KEYWORDS": "Page keywords (comma-separated)",
+                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                              "AD_WIDTH": "Ad slot width in pixels",
+                              "AD_HEIGHT": "Ad slot height in pixels",
+                              "VIDEO_ID": "Content video identifier",
+                              "VIDEO_TITLE": "Content video title",
+                              "VIDEO_DURATION": "Content duration in seconds",
+                              "VIDEO_CATEGORY": "IAB content category",
+                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                              "PLAYER_WIDTH": "Video player width in pixels",
+                              "PLAYER_HEIGHT": "Video player height in pixels",
+                              "POD_POSITION": "Position within ad break",
+                              "POD_SIZE": "Total ads in the ad break",
+                              "AD_BREAK_ID": "Unique ad break identifier",
+                              "STATION_ID": "Radio station or podcast identifier",
+                              "COLLECTION_NAME": "Program or collection name",
+                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                              "AUDIO_DURATION": "Audio content duration in seconds",
+                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                            }
+                          },
+                          {
+                            "type": "string",
+                            "description": "Custom or publisher-specific macro name"
+                          }
+                        ]
+                      },
+                      "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                    },
+                    "required_macros": {
+                      "type": "array",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "title": "Universal Macro",
+                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                            "type": "string",
+                            "enum": [
+                              "MEDIA_BUY_ID",
+                              "PACKAGE_ID",
+                              "CREATIVE_ID",
+                              "CACHEBUSTER",
+                              "TIMESTAMP",
+                              "CLICK_URL",
+                              "GDPR",
+                              "GDPR_CONSENT",
+                              "US_PRIVACY",
+                              "GPP_STRING",
+                              "GPP_SID",
+                              "IP_ADDRESS",
+                              "LIMIT_AD_TRACKING",
+                              "DEVICE_TYPE",
+                              "OS",
+                              "OS_VERSION",
+                              "DEVICE_MAKE",
+                              "DEVICE_MODEL",
+                              "USER_AGENT",
+                              "APP_BUNDLE",
+                              "APP_NAME",
+                              "COUNTRY",
+                              "REGION",
+                              "CITY",
+                              "ZIP",
+                              "DMA",
+                              "LAT",
+                              "LONG",
+                              "DEVICE_ID",
+                              "DEVICE_ID_TYPE",
+                              "DOMAIN",
+                              "PAGE_URL",
+                              "REFERRER",
+                              "KEYWORDS",
+                              "PLACEMENT_ID",
+                              "FOLD_POSITION",
+                              "AD_WIDTH",
+                              "AD_HEIGHT",
+                              "VIDEO_ID",
+                              "VIDEO_TITLE",
+                              "VIDEO_DURATION",
+                              "VIDEO_CATEGORY",
+                              "CONTENT_GENRE",
+                              "CONTENT_RATING",
+                              "PLAYER_WIDTH",
+                              "PLAYER_HEIGHT",
+                              "POD_POSITION",
+                              "POD_SIZE",
+                              "AD_BREAK_ID",
+                              "STATION_ID",
+                              "COLLECTION_NAME",
+                              "INSTALLMENT_ID",
+                              "AUDIO_DURATION",
+                              "TMPX",
+                              "AXEM",
+                              "CATALOG_ID",
+                              "SKU",
+                              "GTIN",
+                              "OFFERING_ID",
+                              "JOB_ID",
+                              "HOTEL_ID",
+                              "FLIGHT_ID",
+                              "VEHICLE_ID",
+                              "LISTING_ID",
+                              "STORE_ID",
+                              "PROGRAM_ID",
+                              "DESTINATION_ID",
+                              "CREATIVE_VARIANT_ID",
+                              "APP_ITEM_ID"
+                            ],
+                            "enumDescriptions": {
+                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                              "PACKAGE_ID": "AdCP package identifier",
+                              "CREATIVE_ID": "AdCP creative identifier",
+                              "CACHEBUSTER": "Random number to prevent caching",
+                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                              "US_PRIVACY": "US Privacy (CCPA) string",
+                              "GPP_STRING": "Global Privacy Platform consent string",
+                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                              "OS_VERSION": "OS version number",
+                              "DEVICE_MAKE": "Device manufacturer",
+                              "DEVICE_MODEL": "Device model identifier",
+                              "USER_AGENT": "Full user agent string",
+                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                              "APP_NAME": "Human-readable app name",
+                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                              "REGION": "State/province/region code",
+                              "CITY": "City name",
+                              "ZIP": "Postal code",
+                              "DMA": "Nielsen DMA code (US TV markets)",
+                              "LAT": "Latitude coordinate",
+                              "LONG": "Longitude coordinate",
+                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                              "DOMAIN": "Domain where ad is shown",
+                              "PAGE_URL": "Full page URL (encoded)",
+                              "REFERRER": "HTTP referrer URL",
+                              "KEYWORDS": "Page keywords (comma-separated)",
+                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                              "AD_WIDTH": "Ad slot width in pixels",
+                              "AD_HEIGHT": "Ad slot height in pixels",
+                              "VIDEO_ID": "Content video identifier",
+                              "VIDEO_TITLE": "Content video title",
+                              "VIDEO_DURATION": "Content duration in seconds",
+                              "VIDEO_CATEGORY": "IAB content category",
+                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                              "PLAYER_WIDTH": "Video player width in pixels",
+                              "PLAYER_HEIGHT": "Video player height in pixels",
+                              "POD_POSITION": "Position within ad break",
+                              "POD_SIZE": "Total ads in the ad break",
+                              "AD_BREAK_ID": "Unique ad break identifier",
+                              "STATION_ID": "Radio station or podcast identifier",
+                              "COLLECTION_NAME": "Program or collection name",
+                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                              "AUDIO_DURATION": "Audio content duration in seconds",
+                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                            }
+                          },
+                          {
+                            "type": "string",
+                            "description": "Custom or publisher-specific macro name"
+                          }
+                        ]
+                      },
+                      "description": "Universal macros that must be provided for webhook to function"
+                    },
+                    "response_type": {
+                      "title": "Webhook Response Type",
+                      "description": "Expected content type of webhook response",
+                      "type": "string",
+                      "enum": [
+                        "html",
+                        "json",
+                        "xml",
+                        "javascript"
+                      ]
+                    },
+                    "security": {
+                      "type": "object",
+                      "description": "Security configuration for webhook calls",
+                      "properties": {
+                        "method": {
+                          "title": "Webhook Security Method",
+                          "description": "Authentication method",
+                          "type": "string",
+                          "enum": [
+                            "hmac_sha256",
+                            "api_key",
+                            "none"
+                          ]
+                        },
+                        "hmac_header": {
+                          "type": "string",
+                          "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                        },
+                        "api_key_header": {
+                          "type": "string",
+                          "description": "Header name for API key (e.g., 'X-API-Key')"
+                        }
+                      },
+                      "required": [
+                        "method"
+                      ]
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "response_type",
+                    "security"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CSS Asset",
+                  "description": "CSS stylesheet asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "CSS content"
+                    },
+                    "media": {
+                      "type": "string",
+                      "description": "CSS media query context (e.g., 'screen', 'print')"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "DAAST Asset",
+                  "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL endpoint that returns DAAST XML"
+                        },
+                        "daast_version": {
+                          "title": "DAAST Version",
+                          "description": "DAAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "1.0",
+                            "1.1"
+                          ]
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected audio duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "DAAST Tracking Event",
+                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "skip",
+                              "progress",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this DAAST tag"
+                        },
+                        "companion_ads": {
+                          "type": "boolean",
+                          "description": "Whether companion display ads are included"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "inline",
+                          "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                        },
+                        "content": {
+                          "type": "string",
+                          "description": "Inline DAAST XML content"
+                        },
+                        "daast_version": {
+                          "title": "DAAST Version",
+                          "description": "DAAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "1.0",
+                            "1.1"
+                          ]
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected audio duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "DAAST Tracking Event",
+                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "skip",
+                              "progress",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this DAAST tag"
+                        },
+                        "companion_ads": {
+                          "type": "boolean",
+                          "description": "Whether companion display ads are included"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Markdown Asset",
+                  "description": "Markdown-formatted text content following CommonMark specification",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                    },
+                    "language": {
+                      "type": "string",
+                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                    },
+                    "markdown_flavor": {
+                      "title": "Markdown Flavor",
+                      "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                      "type": "string",
+                      "enum": [
+                        "commonmark",
+                        "gfm"
+                      ],
+                      "default": "commonmark"
+                    },
+                    "allow_raw_html": {
+                      "type": "boolean",
+                      "default": false,
+                      "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Brief Asset",
+                  "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                  "allOf": [
+                    {
+                      "title": "Creative Brief",
+                      "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                      "type": "object",
+                      "properties": {
+                        "name": {
+                          "type": "string",
+                          "description": "Campaign or flight name for identification"
+                        },
+                        "objective": {
+                          "type": "string",
+                          "enum": [
+                            "awareness",
+                            "consideration",
+                            "conversion",
+                            "retention",
+                            "engagement"
+                          ],
+                          "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                        },
+                        "tone": {
+                          "type": "string",
+                          "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                        },
+                        "audience": {
+                          "type": "string",
+                          "description": "Target audience description for this campaign"
+                        },
+                        "territory": {
+                          "type": "string",
+                          "description": "Creative territory or positioning the campaign should occupy"
+                        },
+                        "messaging": {
+                          "type": "object",
+                          "description": "Messaging framework for the campaign",
+                          "properties": {
+                            "headline": {
+                              "type": "string",
+                              "description": "Primary headline"
+                            },
+                            "tagline": {
+                              "type": "string",
+                              "description": "Supporting tagline or sub-headline"
+                            },
+                            "cta": {
+                              "type": "string",
+                              "description": "Call-to-action text"
+                            },
+                            "key_messages": {
+                              "type": "array",
+                              "description": "Key messages to communicate in priority order",
+                              "items": {
+                                "type": "string"
+                              }
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "reference_assets": {
+                          "type": "array",
+                          "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                          "items": {
+                            "title": "Reference Asset",
+                            "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                            "type": "object",
+                            "properties": {
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the reference asset (image, video, or document)"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "style_reference",
+                                  "product_shot",
+                                  "mood_board",
+                                  "example_creative",
+                                  "logo",
+                                  "strategy_doc",
+                                  "storyboard"
+                                ],
+                                "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of the asset and how it should inform creative generation"
+                              }
+                            },
+                            "required": [
+                              "url",
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "compliance": {
+                          "type": "object",
+                          "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                          "properties": {
+                            "required_disclosures": {
+                              "type": "array",
+                              "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "text": {
+                                    "type": "string",
+                                    "description": "The disclosure text that must appear in the creative"
+                                  },
+                                  "position": {
+                                    "title": "Disclosure Position",
+                                    "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                    "type": "string",
+                                    "enum": [
+                                      "prominent",
+                                      "footer",
+                                      "audio",
+                                      "subtitle",
+                                      "overlay",
+                                      "end_card",
+                                      "pre_roll",
+                                      "companion"
+                                    ]
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                    "items": {
+                                      "type": "string",
+                                      "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                    },
+                                    "minItems": 1
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                  },
+                                  "language": {
+                                    "type": "string",
+                                    "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                  },
+                                  "persistence": {
+                                    "title": "Disclosure Persistence",
+                                    "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                    "type": "string",
+                                    "enum": [
+                                      "continuous",
+                                      "initial",
+                                      "flexible"
+                                    ],
+                                    "enumDescriptions": {
+                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "text"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            },
+                            "prohibited_claims": {
+                              "type": "array",
+                              "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                              "items": {
+                                "type": "string"
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "name"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Catalog Asset",
+                  "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                  "allOf": [
+                    {
+                      "title": "Catalog",
+                      "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                      "type": "object",
+                      "properties": {
+                        "catalog_id": {
+                          "type": "string",
+                          "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                        },
+                        "name": {
+                          "type": "string",
+                          "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                        },
+                        "type": {
+                          "title": "Catalog Type",
+                          "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                          "type": "string",
+                          "enum": [
+                            "offering",
+                            "product",
+                            "inventory",
+                            "store",
+                            "promotion",
+                            "hotel",
+                            "flight",
+                            "job",
+                            "vehicle",
+                            "real_estate",
+                            "education",
+                            "destination",
+                            "app"
+                          ]
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                        },
+                        "feed_format": {
+                          "title": "Feed Format",
+                          "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                          "type": "string",
+                          "enum": [
+                            "google_merchant_center",
+                            "facebook_catalog",
+                            "shopify",
+                            "linkedin_jobs",
+                            "custom"
+                          ]
+                        },
+                        "update_frequency": {
+                          "title": "Update Frequency",
+                          "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                          "type": "string",
+                          "enum": [
+                            "realtime",
+                            "hourly",
+                            "daily",
+                            "weekly"
+                          ]
+                        },
+                        "items": {
+                          "type": "array",
+                          "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                          "items": {
+                            "type": "object"
+                          },
+                          "minItems": 1
+                        },
+                        "ids": {
+                          "type": "array",
+                          "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "gtins": {
+                          "type": "array",
+                          "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                          "items": {
+                            "type": "string",
+                            "pattern": "^[0-9]{8,14}$"
+                          },
+                          "minItems": 1
+                        },
+                        "tags": {
+                          "type": "array",
+                          "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "category": {
+                          "type": "string",
+                          "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                        },
+                        "query": {
+                          "type": "string",
+                          "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                        },
+                        "conversion_events": {
+                          "type": "array",
+                          "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                          "items": {
+                            "title": "Event Type",
+                            "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "content_id_type": {
+                          "title": "Content ID Type",
+                          "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                          "type": "string",
+                          "enum": [
+                            "sku",
+                            "gtin",
+                            "offering_id",
+                            "job_id",
+                            "hotel_id",
+                            "flight_id",
+                            "vehicle_id",
+                            "listing_id",
+                            "store_id",
+                            "program_id",
+                            "destination_id",
+                            "app_id"
+                          ]
+                        },
+                        "feed_field_mappings": {
+                          "type": "array",
+                          "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                          "items": {
+                            "title": "Catalog Field Mapping",
+                            "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                            "type": "object",
+                            "properties": {
+                              "feed_field": {
+                                "type": "string",
+                                "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                              },
+                              "catalog_field": {
+                                "type": "string",
+                                "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                              },
+                              "asset_group_id": {
+                                "type": "string",
+                                "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                              },
+                              "value": {
+                                "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                              },
+                              "transform": {
+                                "type": "string",
+                                "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                "enum": [
+                                  "date",
+                                  "divide",
+                                  "boolean",
+                                  "split"
+                                ]
+                              },
+                              "format": {
+                                "type": "string",
+                                "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                              },
+                              "timezone": {
+                                "type": "string",
+                                "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                              },
+                              "by": {
+                                "type": "number",
+                                "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                "exclusiveMinimum": 0
+                              },
+                              "separator": {
+                                "type": "string",
+                                "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                "default": ","
+                              },
+                              "default": {
+                                "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "allOf": [
+                              {
+                                "not": {
+                                  "required": [
+                                    "feed_field",
+                                    "value"
+                                  ]
+                                }
+                              },
+                              {
+                                "not": {
+                                  "required": [
+                                    "catalog_field",
+                                    "asset_group_id"
+                                  ]
+                                }
+                              }
+                            ],
+                            "additionalProperties": true,
+                            "examples": [
+                              {
+                                "description": "Simple field rename",
+                                "data": {
+                                  "feed_field": "hotel_name",
+                                  "catalog_field": "name"
+                                }
+                              },
+                              {
+                                "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                "data": {
+                                  "feed_field": "available_from",
+                                  "catalog_field": "valid_from",
+                                  "transform": "date",
+                                  "format": "YYYYMMDD",
+                                  "timezone": "UTC"
+                                }
+                              },
+                              {
+                                "description": "Divide cents to dollars",
+                                "data": {
+                                  "feed_field": "price_cents",
+                                  "catalog_field": "price.amount",
+                                  "transform": "divide",
+                                  "by": 100
+                                }
+                              },
+                              {
+                                "description": "Static literal injection \u2014 currency not in feed",
+                                "data": {
+                                  "catalog_field": "price.currency",
+                                  "value": "USD"
+                                }
+                              },
+                              {
+                                "description": "Image URL assigned to typed asset pool",
+                                "data": {
+                                  "feed_field": "primary_photo_url",
+                                  "asset_group_id": "images_landscape"
+                                }
+                              },
+                              {
+                                "description": "Vertical photo URL assigned to vertical pool",
+                                "data": {
+                                  "feed_field": "portrait_photo_url",
+                                  "asset_group_id": "images_vertical"
+                                }
+                              },
+                              {
+                                "description": "Split comma-separated tags to array",
+                                "data": {
+                                  "feed_field": "amenity_list",
+                                  "catalog_field": "amenities",
+                                  "transform": "split",
+                                  "separator": ","
+                                }
+                              },
+                              {
+                                "description": "Boolean coercion with default",
+                                "data": {
+                                  "feed_field": "is_available",
+                                  "catalog_field": "available",
+                                  "transform": "boolean",
+                                  "default": false
+                                }
+                              }
+                            ]
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "type"
+                      ],
+                      "additionalProperties": true,
+                      "examples": [
+                        {
+                          "description": "Synced product catalog from Google Merchant Center",
+                          "data": {
+                            "catalog_id": "gmc-primary",
+                            "name": "Primary Product Feed",
+                            "type": "product",
+                            "url": "https://feeds.acmecorp.com/products.xml",
+                            "feed_format": "google_merchant_center",
+                            "update_frequency": "daily"
+                          }
+                        },
+                        {
+                          "description": "Inventory feed for store-level stock data",
+                          "data": {
+                            "catalog_id": "store-inventory",
+                            "name": "Store Inventory",
+                            "type": "inventory",
+                            "url": "https://feeds.acmecorp.com/inventory.json",
+                            "feed_format": "custom",
+                            "update_frequency": "hourly"
+                          }
+                        },
+                        {
+                          "description": "Store locator feed",
+                          "data": {
+                            "catalog_id": "retail-locations",
+                            "name": "Retail Locations",
+                            "type": "store",
+                            "url": "https://feeds.acmecorp.com/stores.json",
+                            "feed_format": "custom",
+                            "update_frequency": "weekly"
+                          }
+                        },
+                        {
+                          "description": "Promotional pricing feed",
+                          "data": {
+                            "catalog_id": "summer-sale",
+                            "name": "Summer Sale Promotions",
+                            "type": "promotion",
+                            "url": "https://feeds.acmecorp.com/promotions.json",
+                            "feed_format": "google_merchant_center",
+                            "update_frequency": "daily"
+                          }
+                        },
+                        {
+                          "description": "Inline offering catalog (no sync needed)",
+                          "data": {
+                            "type": "offering",
+                            "items": [
+                              {
+                                "offering_id": "summer-sale",
+                                "name": "Summer Sale",
+                                "landing_url": "https://acme.com/summer"
+                              }
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Reference to a previously synced catalog by ID",
+                          "data": {
+                            "catalog_id": "gmc-primary",
+                            "type": "product",
+                            "ids": [
+                              "SKU-12345",
+                              "SKU-67890"
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                          "data": {
+                            "type": "product",
+                            "gtins": [
+                              "00013000006040",
+                              "00013000006057"
+                            ],
+                            "content_id_type": "gtin",
+                            "conversion_events": [
+                              "purchase",
+                              "add_to_cart"
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Inline store catalog with catchment areas",
+                          "data": {
+                            "catalog_id": "retail-locations",
+                            "name": "Retail Locations",
+                            "type": "store",
+                            "items": [
+                              {
+                                "store_id": "amsterdam-flagship",
+                                "name": "Amsterdam Flagship",
+                                "location": {
+                                  "lat": 52.3676,
+                                  "lng": 4.9041
+                                },
+                                "catchments": [
+                                  {
+                                    "catchment_id": "walk",
+                                    "travel_time": {
+                                      "value": 10,
+                                      "unit": "min"
+                                    },
+                                    "transport_mode": "walking"
+                                  },
+                                  {
+                                    "catchment_id": "drive",
+                                    "travel_time": {
+                                      "value": 15,
+                                      "unit": "min"
+                                    },
+                                    "transport_mode": "driving"
+                                  }
+                                ]
+                              }
+                            ]
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "additionalProperties": true
+        },
+        "rights": {
+          "type": "array",
+          "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+          "items": {
+            "title": "Rights Constraint",
+            "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+            "type": "object",
+            "properties": {
+              "rights_id": {
+                "type": "string",
+                "description": "Rights grant identifier from the acquire_rights response"
+              },
+              "rights_agent": {
+                "type": "object",
+                "description": "The agent that granted these rights",
+                "properties": {
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "MCP endpoint URL of the rights agent"
+                  },
+                  "id": {
+                    "type": "string",
+                    "description": "Agent identifier"
+                  }
+                },
+                "required": [
+                  "url",
+                  "id"
+                ]
+              },
+              "valid_from": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Start of the rights validity period"
+              },
+              "valid_until": {
+                "type": "string",
+                "format": "date-time",
+                "description": "End of the rights validity period. Creative should not be served after this time."
+              },
+              "uses": {
+                "type": "array",
+                "description": "Rights uses covered by this constraint",
+                "items": {
+                  "title": "Right Use",
+                  "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                  "type": "string",
+                  "enum": [
+                    "likeness",
+                    "voice",
+                    "name",
+                    "endorsement",
+                    "motion_capture",
+                    "signature",
+                    "catchphrase",
+                    "sync",
+                    "background_music",
+                    "editorial",
+                    "commercial"
+                  ],
+                  "enumDescriptions": {
+                    "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                    "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                    "name": "Use of a person's name in advertising or promotional materials",
+                    "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                    "motion_capture": "Use of a person's movement patterns for animation or video",
+                    "signature": "Use of a person's signature or autograph",
+                    "catchphrase": "Use of a person's well-known phrases or sayings",
+                    "sync": "Synchronization of music with visual media (ads, video)",
+                    "background_music": "Use of music as background audio in advertising",
+                    "editorial": "Use in editorial or informational contexts",
+                    "commercial": "Use in commercial advertising and promotional contexts"
+                  }
+                },
+                "minItems": 1
+              },
+              "countries": {
+                "type": "array",
+                "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "excluded_countries": {
+                "type": "array",
+                "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "impression_cap": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+              },
+              "right_type": {
+                "title": "Right Type",
+                "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                "type": "string",
+                "enum": [
+                  "talent",
+                  "character",
+                  "brand_ip",
+                  "music",
+                  "stock_media"
+                ],
+                "enumDescriptions": {
+                  "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                  "character": "Rights to fictional characters for advertising or co-branding",
+                  "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                  "music": "Rights to musical compositions or recordings (sync, background music)",
+                  "stock_media": "Rights to stock photography, video, or audio collections"
+                }
+              },
+              "approval_status": {
+                "type": "string",
+                "enum": [
+                  "pending",
+                  "approved",
+                  "rejected"
+                ],
+                "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+              },
+              "verification_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "rights_id",
+              "rights_agent",
+              "uses"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "industry_identifiers": {
+          "type": "array",
+          "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+          "items": {
+            "title": "Industry Identifier",
+            "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+            "type": "object",
+            "properties": {
+              "type": {
+                "title": "Creative Identifier Type",
+                "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                "type": "string",
+                "enum": [
+                  "ad_id",
+                  "isci",
+                  "clearcast_clock"
+                ],
+                "enumDescriptions": {
+                  "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                  "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                  "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                },
+                "examples": [
+                  "ad_id",
+                  "isci",
+                  "clearcast_clock"
+                ]
+              },
+              "value": {
+                "type": "string",
+                "maxLength": 64,
+                "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": true
+          },
+          "uniqueItems": true
+        },
+        "provenance": {
+          "title": "Provenance",
+          "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+          "type": "object",
+          "properties": {
+            "digital_source_type": {
+              "title": "Digital Source Type",
+              "description": "IPTC-aligned classification of AI involvement in producing this content",
+              "type": "string",
+              "enum": [
+                "digital_capture",
+                "digital_creation",
+                "trained_algorithmic_media",
+                "composite_with_trained_algorithmic_media",
+                "algorithmic_media",
+                "composite_capture",
+                "composite_synthetic",
+                "human_edits",
+                "data_driven_media"
+              ],
+              "enumDescriptions": {
+                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                "composite_capture": "Multiple digital captures composited together without AI",
+                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+              }
+            },
+            "ai_tool": {
+              "type": "object",
+              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                },
+                "version": {
+                  "type": "string",
+                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                },
+                "provider": {
+                  "type": "string",
+                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                }
+              },
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
+            },
+            "human_oversight": {
+              "type": "string",
+              "description": "Level of human involvement in the AI-assisted creation process",
+              "enum": [
+                "none",
+                "prompt_only",
+                "selected",
+                "edited",
+                "directed"
+              ],
+              "enumDescriptions": {
+                "none": "Fully automated with no human involvement in generation",
+                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                "selected": "Human selected from multiple AI-generated candidates",
+                "edited": "Human edited or refined AI-generated output",
+                "directed": "Human directed the creative process with AI as an assistive tool"
+              }
+            },
+            "declared_by": {
+              "type": "object",
+              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent or service that declared this provenance"
+                },
+                "role": {
+                  "type": "string",
+                  "enum": [
+                    "creator",
+                    "advertiser",
+                    "agency",
+                    "platform",
+                    "tool"
+                  ],
+                  "description": "Role of the declaring party in the supply chain",
+                  "enumDescriptions": {
+                    "creator": "The party that created or generated the content",
+                    "advertiser": "The brand or advertiser that owns the content",
+                    "agency": "Agency acting on behalf of the advertiser",
+                    "platform": "Ad platform or publisher that processed the content",
+                    "tool": "Automated tool or service that attached provenance metadata"
+                  }
+                }
+              },
+              "required": [
+                "role"
+              ],
+              "additionalProperties": true
+            },
+            "declared_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+            },
+            "created_time": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this content was created or generated (ISO 8601)"
+            },
+            "c2pa": {
+              "type": "object",
+              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+              "properties": {
+                "manifest_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL to the C2PA manifest store for this content"
+                }
+              },
+              "required": [
+                "manifest_url"
+              ],
+              "additionalProperties": true
+            },
+            "disclosure": {
+              "type": "object",
+              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+              "properties": {
+                "required": {
+                  "type": "boolean",
+                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                },
+                "jurisdictions": {
+                  "type": "array",
+                  "description": "Jurisdictions where disclosure obligations apply",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "country": {
+                        "type": "string",
+                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                      },
+                      "region": {
+                        "type": "string",
+                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                      },
+                      "regulation": {
+                        "type": "string",
+                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                      },
+                      "label_text": {
+                        "type": "string",
+                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                      },
+                      "render_guidance": {
+                        "type": "object",
+                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                        "minProperties": 1,
+                        "properties": {
+                          "persistence": {
+                            "title": "Disclosure Persistence",
+                            "description": "How long the disclosure must persist during content playback or display",
+                            "type": "string",
+                            "enum": [
+                              "continuous",
+                              "initial",
+                              "flexible"
+                            ],
+                            "enumDescriptions": {
+                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                            }
+                          },
+                          "min_duration_ms": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                          },
+                          "positions": {
+                            "type": "array",
+                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                            "items": {
+                              "title": "Disclosure Position",
+                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                              "type": "string",
+                              "enum": [
+                                "prominent",
+                                "footer",
+                                "audio",
+                                "subtitle",
+                                "overlay",
+                                "end_card",
+                                "pre_roll",
+                                "companion"
+                              ]
+                            },
+                            "minItems": 1,
+                            "uniqueItems": true
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "country",
+                      "regulation"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "required"
+              ],
+              "additionalProperties": true
+            },
+            "verification": {
+              "type": "array",
+              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+              "minItems": 1,
+              "items": {
+                "type": "object",
+                "properties": {
+                  "verified_by": {
+                    "type": "string",
+                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                  },
+                  "verified_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the verification was performed (ISO 8601)"
+                  },
+                  "result": {
+                    "type": "string",
+                    "enum": [
+                      "authentic",
+                      "ai_generated",
+                      "ai_modified",
+                      "inconclusive"
+                    ],
+                    "description": "Verification outcome"
+                  },
+                  "confidence": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                  },
+                  "details_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL to the full verification report"
+                  }
+                },
+                "required": [
+                  "verified_by",
+                  "result"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "format_id",
+        "assets"
+      ],
+      "additionalProperties": true
+    },
+    "format_id": {
+      "title": "Format ID",
+      "description": "Format identifier for rendering the preview. Defaults to creative_manifest.format_id if omitted. Used in single mode.",
+      "type": "object",
+      "properties": {
+        "agent_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        },
+        "id": {
+          "type": "string",
+          "pattern": "^[a-zA-Z0-9_-]+$",
+          "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+        },
+        "width": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+        },
+        "height": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+        },
+        "duration_ms": {
+          "type": "number",
+          "minimum": 1,
+          "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+        }
+      },
+      "required": [
+        "agent_url",
+        "id"
+      ],
+      "additionalProperties": true,
+      "dependencies": {
+        "width": [
+          "height"
+        ],
+        "height": [
+          "width"
+        ]
+      }
+    },
+    "inputs": {
+      "type": "array",
+      "description": "Array of input sets for generating multiple preview variants. Each input set defines macros and context values for one preview rendering. Used in single mode.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad', 'Desktop dark mode')"
+          },
+          "macros": {
+            "type": "object",
+            "description": "Macro values to use for this preview. Supports all universal macros from the format's supported_macros list.",
+            "additionalProperties": {
+              "type": "string"
+            }
+          },
+          "context_description": {
+            "type": "string",
+            "description": "Natural language description of the context for AI-generated content (e.g., 'User just searched for running shoes', 'Podcast discussing weather patterns')"
+          }
+        },
+        "required": [
+          "name"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "template_id": {
+      "type": "string",
+      "description": "Specific template ID for custom format rendering. Used in single mode."
+    },
+    "quality": {
+      "title": "Creative Quality",
+      "description": "Render quality. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. In batch mode, sets the default for all requests (individual items can override).",
+      "type": "string",
+      "enum": [
+        "draft",
+        "production"
+      ],
+      "enumDescriptions": {
+        "draft": "Fast, lower-fidelity output for iteration and review",
+        "production": "Full-quality output for final delivery"
+      }
+    },
+    "output_format": {
+      "title": "Preview Output Format",
+      "description": "Output format. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). In batch mode, sets the default for all requests (individual items can override). Default: 'url'.",
+      "type": "string",
+      "enum": [
+        "url",
+        "html"
+      ],
+      "default": "url"
+    },
+    "item_limit": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum number of catalog items to render per preview variant. Used in single mode. Creative agents SHOULD default to a reasonable sample when omitted and the catalog is large."
+    },
+    "requests": {
+      "type": "array",
+      "description": "Array of preview requests (1-50 items). Required when request_type is 'batch'. Each item follows the single request structure.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "format_id": {
+            "title": "Format ID",
+            "description": "Format identifier for rendering the preview. Defaults to creative_manifest.format_id if omitted.",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "creative_manifest": {
+            "title": "Creative Manifest",
+            "description": "Complete creative manifest with all required assets.",
+            "type": "object",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "assets": {
+                "type": "object",
+                "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+                "patternProperties": {
+                  "^[a-z0-9_]+$": {
+                    "anyOf": [
+                      {
+                        "title": "Image Asset",
+                        "description": "Image asset with URL and dimensions",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the image asset"
+                          },
+                          "width": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Width in pixels"
+                          },
+                          "height": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Height in pixels"
+                          },
+                          "format": {
+                            "type": "string",
+                            "description": "Image file format (jpg, png, gif, webp, etc.)"
+                          },
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Alternative text for accessibility",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url",
+                          "width",
+                          "height"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Video Asset",
+                        "description": "Video asset with URL and technical specifications including audio track properties",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the video asset"
+                          },
+                          "width": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Width in pixels"
+                          },
+                          "height": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Height in pixels"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Video duration in milliseconds",
+                            "minimum": 1
+                          },
+                          "file_size_bytes": {
+                            "type": "integer",
+                            "description": "File size in bytes",
+                            "minimum": 1
+                          },
+                          "container_format": {
+                            "type": "string",
+                            "description": "Video container format (mp4, webm, mov, etc.)"
+                          },
+                          "video_codec": {
+                            "type": "string",
+                            "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                          },
+                          "video_bitrate_kbps": {
+                            "type": "integer",
+                            "description": "Video stream bitrate in kilobits per second",
+                            "minimum": 1
+                          },
+                          "frame_rate": {
+                            "type": "string",
+                            "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                          },
+                          "frame_rate_type": {
+                            "type": "string",
+                            "enum": [
+                              "constant",
+                              "variable"
+                            ],
+                            "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                          },
+                          "scan_type": {
+                            "type": "string",
+                            "enum": [
+                              "progressive",
+                              "interlaced"
+                            ],
+                            "description": "Scan type of the video"
+                          },
+                          "color_space": {
+                            "type": "string",
+                            "enum": [
+                              "rec709",
+                              "rec2020",
+                              "rec2100",
+                              "srgb",
+                              "dci_p3"
+                            ],
+                            "description": "Color space of the video"
+                          },
+                          "hdr_format": {
+                            "type": "string",
+                            "enum": [
+                              "sdr",
+                              "hdr10",
+                              "hdr10_plus",
+                              "hlg",
+                              "dolby_vision"
+                            ],
+                            "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                          },
+                          "chroma_subsampling": {
+                            "type": "string",
+                            "enum": [
+                              "4:2:0",
+                              "4:2:2",
+                              "4:4:4"
+                            ],
+                            "description": "Chroma subsampling format"
+                          },
+                          "video_bit_depth": {
+                            "type": "integer",
+                            "enum": [
+                              8,
+                              10,
+                              12
+                            ],
+                            "description": "Video bit depth"
+                          },
+                          "gop_interval_seconds": {
+                            "type": "number",
+                            "description": "GOP/keyframe interval in seconds"
+                          },
+                          "gop_type": {
+                            "type": "string",
+                            "enum": [
+                              "closed",
+                              "open"
+                            ],
+                            "description": "GOP structure type"
+                          },
+                          "moov_atom_position": {
+                            "type": "string",
+                            "enum": [
+                              "start",
+                              "end"
+                            ],
+                            "description": "Position of moov atom in MP4 container"
+                          },
+                          "has_audio": {
+                            "type": "boolean",
+                            "description": "Whether the video contains an audio track"
+                          },
+                          "audio_codec": {
+                            "type": "string",
+                            "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                          },
+                          "audio_sampling_rate_hz": {
+                            "type": "integer",
+                            "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                          },
+                          "audio_channels": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo",
+                              "5.1",
+                              "7.1"
+                            ],
+                            "description": "Audio channel configuration"
+                          },
+                          "audio_bit_depth": {
+                            "type": "integer",
+                            "enum": [
+                              16,
+                              24,
+                              32
+                            ],
+                            "description": "Audio bit depth"
+                          },
+                          "audio_bitrate_kbps": {
+                            "type": "integer",
+                            "description": "Audio bitrate in kilobits per second",
+                            "minimum": 1
+                          },
+                          "audio_loudness_lufs": {
+                            "type": "number",
+                            "description": "Integrated loudness in LUFS"
+                          },
+                          "audio_true_peak_dbfs": {
+                            "type": "number",
+                            "description": "True peak level in dBFS"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the video content",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url",
+                          "width",
+                          "height"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Audio Asset",
+                        "description": "Audio asset with URL and technical specifications",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the audio asset"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Audio duration in milliseconds",
+                            "minimum": 0
+                          },
+                          "file_size_bytes": {
+                            "type": "integer",
+                            "description": "File size in bytes",
+                            "minimum": 1
+                          },
+                          "container_format": {
+                            "type": "string",
+                            "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                          },
+                          "codec": {
+                            "type": "string",
+                            "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                          },
+                          "sampling_rate_hz": {
+                            "type": "integer",
+                            "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                          },
+                          "channels": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo",
+                              "5.1",
+                              "7.1"
+                            ],
+                            "description": "Channel configuration"
+                          },
+                          "bit_depth": {
+                            "type": "integer",
+                            "enum": [
+                              16,
+                              24,
+                              32
+                            ],
+                            "description": "Bit depth"
+                          },
+                          "bitrate_kbps": {
+                            "type": "integer",
+                            "description": "Bitrate in kilobits per second",
+                            "minimum": 1
+                          },
+                          "loudness_lufs": {
+                            "type": "number",
+                            "description": "Integrated loudness in LUFS"
+                          },
+                          "true_peak_dbfs": {
+                            "type": "number",
+                            "description": "True peak level in dBFS"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "VAST Asset",
+                        "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "url",
+                                "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL endpoint that returns VAST XML"
+                              },
+                              "vast_version": {
+                                "title": "VAST Version",
+                                "description": "VAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "2.0",
+                                  "3.0",
+                                  "4.0",
+                                  "4.1",
+                                  "4.2"
+                                ]
+                              },
+                              "vpaid_enabled": {
+                                "type": "boolean",
+                                "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected video duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "VAST Tracking Event",
+                                  "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "rewind",
+                                    "skip",
+                                    "playerExpand",
+                                    "playerCollapse",
+                                    "fullscreen",
+                                    "exitFullscreen",
+                                    "progress",
+                                    "notUsed",
+                                    "otherAdInteraction",
+                                    "interactiveStart",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "closeLinear",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this VAST tag"
+                              },
+                              "captions_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                "x-accessibility": true
+                              },
+                              "audio_description_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to audio description track for visually impaired users",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "inline",
+                                "description": "Discriminator indicating VAST is delivered as inline XML content"
+                              },
+                              "content": {
+                                "type": "string",
+                                "description": "Inline VAST XML content"
+                              },
+                              "vast_version": {
+                                "title": "VAST Version",
+                                "description": "VAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "2.0",
+                                  "3.0",
+                                  "4.0",
+                                  "4.1",
+                                  "4.2"
+                                ]
+                              },
+                              "vpaid_enabled": {
+                                "type": "boolean",
+                                "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected video duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "VAST Tracking Event",
+                                  "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "rewind",
+                                    "skip",
+                                    "playerExpand",
+                                    "playerCollapse",
+                                    "fullscreen",
+                                    "exitFullscreen",
+                                    "progress",
+                                    "notUsed",
+                                    "otherAdInteraction",
+                                    "interactiveStart",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "closeLinear",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this VAST tag"
+                              },
+                              "captions_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                "x-accessibility": true
+                              },
+                              "audio_description_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to audio description track for visually impaired users",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "content"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      {
+                        "title": "Text Asset",
+                        "description": "Text content asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "Text content"
+                          },
+                          "language": {
+                            "type": "string",
+                            "description": "Language code (e.g., 'en', 'es', 'fr')"
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "URL Asset",
+                        "description": "URL reference asset",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL reference"
+                          },
+                          "url_type": {
+                            "title": "URL Asset Type",
+                            "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                            "type": "string",
+                            "enum": [
+                              "clickthrough",
+                              "tracker_pixel",
+                              "tracker_script"
+                            ]
+                          },
+                          "description": {
+                            "type": "string",
+                            "description": "Description of what this URL points to"
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "HTML Asset",
+                        "description": "HTML content asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "HTML content"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "HTML version (e.g., 'HTML5')"
+                          },
+                          "accessibility": {
+                            "type": "object",
+                            "description": "Self-declared accessibility properties for this opaque creative",
+                            "x-accessibility": true,
+                            "properties": {
+                              "alt_text": {
+                                "type": "string",
+                                "description": "Text alternative describing the creative content"
+                              },
+                              "keyboard_navigable": {
+                                "type": "boolean",
+                                "description": "Whether the creative can be fully operated via keyboard"
+                              },
+                              "motion_control": {
+                                "type": "boolean",
+                                "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                              },
+                              "screen_reader_tested": {
+                                "type": "boolean",
+                                "description": "Whether the creative has been tested with screen readers"
+                              }
+                            }
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "JavaScript Asset",
+                        "description": "JavaScript code asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "JavaScript content"
+                          },
+                          "module_type": {
+                            "title": "JavaScript Module Type",
+                            "description": "JavaScript module type",
+                            "type": "string",
+                            "enum": [
+                              "esm",
+                              "commonjs",
+                              "script"
+                            ]
+                          },
+                          "accessibility": {
+                            "type": "object",
+                            "description": "Self-declared accessibility properties for this opaque creative",
+                            "x-accessibility": true,
+                            "properties": {
+                              "alt_text": {
+                                "type": "string",
+                                "description": "Text alternative describing the creative content"
+                              },
+                              "keyboard_navigable": {
+                                "type": "boolean",
+                                "description": "Whether the creative can be fully operated via keyboard"
+                              },
+                              "motion_control": {
+                                "type": "boolean",
+                                "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                              },
+                              "screen_reader_tested": {
+                                "type": "boolean",
+                                "description": "Whether the creative has been tested with screen readers"
+                              }
+                            }
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Webhook Asset",
+                        "description": "Webhook for server-side dynamic content rendering (DCO)",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "Webhook URL to call for dynamic content"
+                          },
+                          "method": {
+                            "title": "HTTP Method",
+                            "description": "HTTP method",
+                            "type": "string",
+                            "enum": [
+                              "GET",
+                              "POST"
+                            ],
+                            "default": "POST"
+                          },
+                          "timeout_ms": {
+                            "type": "integer",
+                            "minimum": 10,
+                            "maximum": 5000,
+                            "default": 500,
+                            "description": "Maximum time to wait for response in milliseconds"
+                          },
+                          "supported_macros": {
+                            "type": "array",
+                            "items": {
+                              "oneOf": [
+                                {
+                                  "title": "Universal Macro",
+                                  "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                  "type": "string",
+                                  "enum": [
+                                    "MEDIA_BUY_ID",
+                                    "PACKAGE_ID",
+                                    "CREATIVE_ID",
+                                    "CACHEBUSTER",
+                                    "TIMESTAMP",
+                                    "CLICK_URL",
+                                    "GDPR",
+                                    "GDPR_CONSENT",
+                                    "US_PRIVACY",
+                                    "GPP_STRING",
+                                    "GPP_SID",
+                                    "IP_ADDRESS",
+                                    "LIMIT_AD_TRACKING",
+                                    "DEVICE_TYPE",
+                                    "OS",
+                                    "OS_VERSION",
+                                    "DEVICE_MAKE",
+                                    "DEVICE_MODEL",
+                                    "USER_AGENT",
+                                    "APP_BUNDLE",
+                                    "APP_NAME",
+                                    "COUNTRY",
+                                    "REGION",
+                                    "CITY",
+                                    "ZIP",
+                                    "DMA",
+                                    "LAT",
+                                    "LONG",
+                                    "DEVICE_ID",
+                                    "DEVICE_ID_TYPE",
+                                    "DOMAIN",
+                                    "PAGE_URL",
+                                    "REFERRER",
+                                    "KEYWORDS",
+                                    "PLACEMENT_ID",
+                                    "FOLD_POSITION",
+                                    "AD_WIDTH",
+                                    "AD_HEIGHT",
+                                    "VIDEO_ID",
+                                    "VIDEO_TITLE",
+                                    "VIDEO_DURATION",
+                                    "VIDEO_CATEGORY",
+                                    "CONTENT_GENRE",
+                                    "CONTENT_RATING",
+                                    "PLAYER_WIDTH",
+                                    "PLAYER_HEIGHT",
+                                    "POD_POSITION",
+                                    "POD_SIZE",
+                                    "AD_BREAK_ID",
+                                    "STATION_ID",
+                                    "COLLECTION_NAME",
+                                    "INSTALLMENT_ID",
+                                    "AUDIO_DURATION",
+                                    "TMPX",
+                                    "AXEM",
+                                    "CATALOG_ID",
+                                    "SKU",
+                                    "GTIN",
+                                    "OFFERING_ID",
+                                    "JOB_ID",
+                                    "HOTEL_ID",
+                                    "FLIGHT_ID",
+                                    "VEHICLE_ID",
+                                    "LISTING_ID",
+                                    "STORE_ID",
+                                    "PROGRAM_ID",
+                                    "DESTINATION_ID",
+                                    "CREATIVE_VARIANT_ID",
+                                    "APP_ITEM_ID"
+                                  ],
+                                  "enumDescriptions": {
+                                    "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                    "PACKAGE_ID": "AdCP package identifier",
+                                    "CREATIVE_ID": "AdCP creative identifier",
+                                    "CACHEBUSTER": "Random number to prevent caching",
+                                    "TIMESTAMP": "Unix timestamp in milliseconds",
+                                    "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                    "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                    "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                    "US_PRIVACY": "US Privacy (CCPA) string",
+                                    "GPP_STRING": "Global Privacy Platform consent string",
+                                    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                    "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                    "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                    "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                    "OS_VERSION": "OS version number",
+                                    "DEVICE_MAKE": "Device manufacturer",
+                                    "DEVICE_MODEL": "Device model identifier",
+                                    "USER_AGENT": "Full user agent string",
+                                    "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                    "APP_NAME": "Human-readable app name",
+                                    "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                    "REGION": "State/province/region code",
+                                    "CITY": "City name",
+                                    "ZIP": "Postal code",
+                                    "DMA": "Nielsen DMA code (US TV markets)",
+                                    "LAT": "Latitude coordinate",
+                                    "LONG": "Longitude coordinate",
+                                    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                    "DOMAIN": "Domain where ad is shown",
+                                    "PAGE_URL": "Full page URL (encoded)",
+                                    "REFERRER": "HTTP referrer URL",
+                                    "KEYWORDS": "Page keywords (comma-separated)",
+                                    "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                    "AD_WIDTH": "Ad slot width in pixels",
+                                    "AD_HEIGHT": "Ad slot height in pixels",
+                                    "VIDEO_ID": "Content video identifier",
+                                    "VIDEO_TITLE": "Content video title",
+                                    "VIDEO_DURATION": "Content duration in seconds",
+                                    "VIDEO_CATEGORY": "IAB content category",
+                                    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                    "PLAYER_WIDTH": "Video player width in pixels",
+                                    "PLAYER_HEIGHT": "Video player height in pixels",
+                                    "POD_POSITION": "Position within ad break",
+                                    "POD_SIZE": "Total ads in the ad break",
+                                    "AD_BREAK_ID": "Unique ad break identifier",
+                                    "STATION_ID": "Radio station or podcast identifier",
+                                    "COLLECTION_NAME": "Program or collection name",
+                                    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                    "AUDIO_DURATION": "Audio content duration in seconds",
+                                    "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                    "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                    "SKU": "Product SKU identifier for the catalog item being rendered",
+                                    "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                    "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                    "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                    "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                  }
+                                },
+                                {
+                                  "type": "string",
+                                  "description": "Custom or publisher-specific macro name"
+                                }
+                              ]
+                            },
+                            "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                          },
+                          "required_macros": {
+                            "type": "array",
+                            "items": {
+                              "oneOf": [
+                                {
+                                  "title": "Universal Macro",
+                                  "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                  "type": "string",
+                                  "enum": [
+                                    "MEDIA_BUY_ID",
+                                    "PACKAGE_ID",
+                                    "CREATIVE_ID",
+                                    "CACHEBUSTER",
+                                    "TIMESTAMP",
+                                    "CLICK_URL",
+                                    "GDPR",
+                                    "GDPR_CONSENT",
+                                    "US_PRIVACY",
+                                    "GPP_STRING",
+                                    "GPP_SID",
+                                    "IP_ADDRESS",
+                                    "LIMIT_AD_TRACKING",
+                                    "DEVICE_TYPE",
+                                    "OS",
+                                    "OS_VERSION",
+                                    "DEVICE_MAKE",
+                                    "DEVICE_MODEL",
+                                    "USER_AGENT",
+                                    "APP_BUNDLE",
+                                    "APP_NAME",
+                                    "COUNTRY",
+                                    "REGION",
+                                    "CITY",
+                                    "ZIP",
+                                    "DMA",
+                                    "LAT",
+                                    "LONG",
+                                    "DEVICE_ID",
+                                    "DEVICE_ID_TYPE",
+                                    "DOMAIN",
+                                    "PAGE_URL",
+                                    "REFERRER",
+                                    "KEYWORDS",
+                                    "PLACEMENT_ID",
+                                    "FOLD_POSITION",
+                                    "AD_WIDTH",
+                                    "AD_HEIGHT",
+                                    "VIDEO_ID",
+                                    "VIDEO_TITLE",
+                                    "VIDEO_DURATION",
+                                    "VIDEO_CATEGORY",
+                                    "CONTENT_GENRE",
+                                    "CONTENT_RATING",
+                                    "PLAYER_WIDTH",
+                                    "PLAYER_HEIGHT",
+                                    "POD_POSITION",
+                                    "POD_SIZE",
+                                    "AD_BREAK_ID",
+                                    "STATION_ID",
+                                    "COLLECTION_NAME",
+                                    "INSTALLMENT_ID",
+                                    "AUDIO_DURATION",
+                                    "TMPX",
+                                    "AXEM",
+                                    "CATALOG_ID",
+                                    "SKU",
+                                    "GTIN",
+                                    "OFFERING_ID",
+                                    "JOB_ID",
+                                    "HOTEL_ID",
+                                    "FLIGHT_ID",
+                                    "VEHICLE_ID",
+                                    "LISTING_ID",
+                                    "STORE_ID",
+                                    "PROGRAM_ID",
+                                    "DESTINATION_ID",
+                                    "CREATIVE_VARIANT_ID",
+                                    "APP_ITEM_ID"
+                                  ],
+                                  "enumDescriptions": {
+                                    "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                    "PACKAGE_ID": "AdCP package identifier",
+                                    "CREATIVE_ID": "AdCP creative identifier",
+                                    "CACHEBUSTER": "Random number to prevent caching",
+                                    "TIMESTAMP": "Unix timestamp in milliseconds",
+                                    "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                    "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                    "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                    "US_PRIVACY": "US Privacy (CCPA) string",
+                                    "GPP_STRING": "Global Privacy Platform consent string",
+                                    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                    "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                    "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                    "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                    "OS_VERSION": "OS version number",
+                                    "DEVICE_MAKE": "Device manufacturer",
+                                    "DEVICE_MODEL": "Device model identifier",
+                                    "USER_AGENT": "Full user agent string",
+                                    "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                    "APP_NAME": "Human-readable app name",
+                                    "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                    "REGION": "State/province/region code",
+                                    "CITY": "City name",
+                                    "ZIP": "Postal code",
+                                    "DMA": "Nielsen DMA code (US TV markets)",
+                                    "LAT": "Latitude coordinate",
+                                    "LONG": "Longitude coordinate",
+                                    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                    "DOMAIN": "Domain where ad is shown",
+                                    "PAGE_URL": "Full page URL (encoded)",
+                                    "REFERRER": "HTTP referrer URL",
+                                    "KEYWORDS": "Page keywords (comma-separated)",
+                                    "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                    "AD_WIDTH": "Ad slot width in pixels",
+                                    "AD_HEIGHT": "Ad slot height in pixels",
+                                    "VIDEO_ID": "Content video identifier",
+                                    "VIDEO_TITLE": "Content video title",
+                                    "VIDEO_DURATION": "Content duration in seconds",
+                                    "VIDEO_CATEGORY": "IAB content category",
+                                    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                    "PLAYER_WIDTH": "Video player width in pixels",
+                                    "PLAYER_HEIGHT": "Video player height in pixels",
+                                    "POD_POSITION": "Position within ad break",
+                                    "POD_SIZE": "Total ads in the ad break",
+                                    "AD_BREAK_ID": "Unique ad break identifier",
+                                    "STATION_ID": "Radio station or podcast identifier",
+                                    "COLLECTION_NAME": "Program or collection name",
+                                    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                    "AUDIO_DURATION": "Audio content duration in seconds",
+                                    "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                    "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                    "SKU": "Product SKU identifier for the catalog item being rendered",
+                                    "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                    "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                    "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                    "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                  }
+                                },
+                                {
+                                  "type": "string",
+                                  "description": "Custom or publisher-specific macro name"
+                                }
+                              ]
+                            },
+                            "description": "Universal macros that must be provided for webhook to function"
+                          },
+                          "response_type": {
+                            "title": "Webhook Response Type",
+                            "description": "Expected content type of webhook response",
+                            "type": "string",
+                            "enum": [
+                              "html",
+                              "json",
+                              "xml",
+                              "javascript"
+                            ]
+                          },
+                          "security": {
+                            "type": "object",
+                            "description": "Security configuration for webhook calls",
+                            "properties": {
+                              "method": {
+                                "title": "Webhook Security Method",
+                                "description": "Authentication method",
+                                "type": "string",
+                                "enum": [
+                                  "hmac_sha256",
+                                  "api_key",
+                                  "none"
+                                ]
+                              },
+                              "hmac_header": {
+                                "type": "string",
+                                "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                              },
+                              "api_key_header": {
+                                "type": "string",
+                                "description": "Header name for API key (e.g., 'X-API-Key')"
+                              }
+                            },
+                            "required": [
+                              "method"
+                            ]
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url",
+                          "response_type",
+                          "security"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "CSS Asset",
+                        "description": "CSS stylesheet asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "CSS content"
+                          },
+                          "media": {
+                            "type": "string",
+                            "description": "CSS media query context (e.g., 'screen', 'print')"
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "DAAST Asset",
+                        "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "url",
+                                "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL endpoint that returns DAAST XML"
+                              },
+                              "daast_version": {
+                                "title": "DAAST Version",
+                                "description": "DAAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "1.0",
+                                  "1.1"
+                                ]
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected audio duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "DAAST Tracking Event",
+                                  "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "skip",
+                                    "progress",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this DAAST tag"
+                              },
+                              "companion_ads": {
+                                "type": "boolean",
+                                "description": "Whether companion display ads are included"
+                              },
+                              "transcript_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to text transcript of the audio content",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "inline",
+                                "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                              },
+                              "content": {
+                                "type": "string",
+                                "description": "Inline DAAST XML content"
+                              },
+                              "daast_version": {
+                                "title": "DAAST Version",
+                                "description": "DAAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "1.0",
+                                  "1.1"
+                                ]
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected audio duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "DAAST Tracking Event",
+                                  "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "skip",
+                                    "progress",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this DAAST tag"
+                              },
+                              "companion_ads": {
+                                "type": "boolean",
+                                "description": "Whether companion display ads are included"
+                              },
+                              "transcript_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to text transcript of the audio content",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "content"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      {
+                        "title": "Markdown Asset",
+                        "description": "Markdown-formatted text content following CommonMark specification",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                          },
+                          "language": {
+                            "type": "string",
+                            "description": "Language code (e.g., 'en', 'es', 'fr')"
+                          },
+                          "markdown_flavor": {
+                            "title": "Markdown Flavor",
+                            "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                            "type": "string",
+                            "enum": [
+                              "commonmark",
+                              "gfm"
+                            ],
+                            "default": "commonmark"
+                          },
+                          "allow_raw_html": {
+                            "type": "boolean",
+                            "default": false,
+                            "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Brief Asset",
+                        "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                        "allOf": [
+                          {
+                            "title": "Creative Brief",
+                            "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                            "type": "object",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Campaign or flight name for identification"
+                              },
+                              "objective": {
+                                "type": "string",
+                                "enum": [
+                                  "awareness",
+                                  "consideration",
+                                  "conversion",
+                                  "retention",
+                                  "engagement"
+                                ],
+                                "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                              },
+                              "tone": {
+                                "type": "string",
+                                "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                              },
+                              "audience": {
+                                "type": "string",
+                                "description": "Target audience description for this campaign"
+                              },
+                              "territory": {
+                                "type": "string",
+                                "description": "Creative territory or positioning the campaign should occupy"
+                              },
+                              "messaging": {
+                                "type": "object",
+                                "description": "Messaging framework for the campaign",
+                                "properties": {
+                                  "headline": {
+                                    "type": "string",
+                                    "description": "Primary headline"
+                                  },
+                                  "tagline": {
+                                    "type": "string",
+                                    "description": "Supporting tagline or sub-headline"
+                                  },
+                                  "cta": {
+                                    "type": "string",
+                                    "description": "Call-to-action text"
+                                  },
+                                  "key_messages": {
+                                    "type": "array",
+                                    "description": "Key messages to communicate in priority order",
+                                    "items": {
+                                      "type": "string"
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "reference_assets": {
+                                "type": "array",
+                                "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                                "items": {
+                                  "title": "Reference Asset",
+                                  "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                  "type": "object",
+                                  "properties": {
+                                    "url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the reference asset (image, video, or document)"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "style_reference",
+                                        "product_shot",
+                                        "mood_board",
+                                        "example_creative",
+                                        "logo",
+                                        "strategy_doc",
+                                        "storyboard"
+                                      ],
+                                      "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                    },
+                                    "description": {
+                                      "type": "string",
+                                      "description": "Human-readable description of the asset and how it should inform creative generation"
+                                    }
+                                  },
+                                  "required": [
+                                    "url",
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "compliance": {
+                                "type": "object",
+                                "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                                "properties": {
+                                  "required_disclosures": {
+                                    "type": "array",
+                                    "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "text": {
+                                          "type": "string",
+                                          "description": "The disclosure text that must appear in the creative"
+                                        },
+                                        "position": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                          "items": {
+                                            "type": "string",
+                                            "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                          },
+                                          "minItems": 1
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                        },
+                                        "language": {
+                                          "type": "string",
+                                          "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                        },
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "text"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  },
+                                  "prohibited_claims": {
+                                    "type": "array",
+                                    "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                    "items": {
+                                      "type": "string"
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      {
+                        "title": "Catalog Asset",
+                        "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                        "allOf": [
+                          {
+                            "title": "Catalog",
+                            "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                            "type": "object",
+                            "properties": {
+                              "catalog_id": {
+                                "type": "string",
+                                "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                              },
+                              "type": {
+                                "title": "Catalog Type",
+                                "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                                "type": "string",
+                                "enum": [
+                                  "offering",
+                                  "product",
+                                  "inventory",
+                                  "store",
+                                  "promotion",
+                                  "hotel",
+                                  "flight",
+                                  "job",
+                                  "vehicle",
+                                  "real_estate",
+                                  "education",
+                                  "destination",
+                                  "app"
+                                ]
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                              },
+                              "feed_format": {
+                                "title": "Feed Format",
+                                "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                                "type": "string",
+                                "enum": [
+                                  "google_merchant_center",
+                                  "facebook_catalog",
+                                  "shopify",
+                                  "linkedin_jobs",
+                                  "custom"
+                                ]
+                              },
+                              "update_frequency": {
+                                "title": "Update Frequency",
+                                "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                                "type": "string",
+                                "enum": [
+                                  "realtime",
+                                  "hourly",
+                                  "daily",
+                                  "weekly"
+                                ]
+                              },
+                              "items": {
+                                "type": "array",
+                                "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                                "items": {
+                                  "type": "object"
+                                },
+                                "minItems": 1
+                              },
+                              "ids": {
+                                "type": "array",
+                                "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                                "items": {
+                                  "type": "string"
+                                },
+                                "minItems": 1
+                              },
+                              "gtins": {
+                                "type": "array",
+                                "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                                "items": {
+                                  "type": "string",
+                                  "pattern": "^[0-9]{8,14}$"
+                                },
+                                "minItems": 1
+                              },
+                              "tags": {
+                                "type": "array",
+                                "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                                "items": {
+                                  "type": "string"
+                                },
+                                "minItems": 1
+                              },
+                              "category": {
+                                "type": "string",
+                                "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                              },
+                              "query": {
+                                "type": "string",
+                                "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                              },
+                              "conversion_events": {
+                                "type": "array",
+                                "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                                "items": {
+                                  "title": "Event Type",
+                                  "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                  "type": "string",
+                                  "enum": [
+                                    "page_view",
+                                    "view_content",
+                                    "select_content",
+                                    "select_item",
+                                    "search",
+                                    "share",
+                                    "add_to_cart",
+                                    "remove_from_cart",
+                                    "viewed_cart",
+                                    "add_to_wishlist",
+                                    "initiate_checkout",
+                                    "add_payment_info",
+                                    "purchase",
+                                    "refund",
+                                    "lead",
+                                    "qualify_lead",
+                                    "close_convert_lead",
+                                    "disqualify_lead",
+                                    "complete_registration",
+                                    "subscribe",
+                                    "start_trial",
+                                    "app_install",
+                                    "app_launch",
+                                    "contact",
+                                    "schedule",
+                                    "donate",
+                                    "submit_application",
+                                    "custom"
+                                  ],
+                                  "enumDescriptions": {
+                                    "page_view": "User viewed a page",
+                                    "view_content": "User viewed specific content (product, article, etc.)",
+                                    "select_content": "User selected or clicked on content (article, video, etc.)",
+                                    "select_item": "User selected a specific product or item from a list",
+                                    "search": "User performed a search",
+                                    "share": "User shared content via social or messaging",
+                                    "add_to_cart": "User added an item to cart",
+                                    "remove_from_cart": "User removed an item from cart",
+                                    "viewed_cart": "User viewed their shopping cart",
+                                    "add_to_wishlist": "User added an item to a wishlist",
+                                    "initiate_checkout": "User started checkout process",
+                                    "add_payment_info": "User added payment information",
+                                    "purchase": "User completed a purchase",
+                                    "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                    "lead": "User expressed interest (form submission, signup, etc.)",
+                                    "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                    "close_convert_lead": "Lead converted to a customer or closed deal",
+                                    "disqualify_lead": "Lead disqualified or marked as not viable",
+                                    "complete_registration": "User completed account registration",
+                                    "subscribe": "User subscribed to a service or newsletter",
+                                    "start_trial": "User started a free trial",
+                                    "app_install": "User installed an application",
+                                    "app_launch": "User launched an application",
+                                    "contact": "User initiated contact (call, message, etc.)",
+                                    "schedule": "User scheduled an appointment or event",
+                                    "donate": "User made a donation",
+                                    "submit_application": "User submitted an application (loan, job, etc.)",
+                                    "custom": "Custom event type (specify in custom_event_name)"
+                                  }
+                                },
+                                "minItems": 1,
+                                "uniqueItems": true
+                              },
+                              "content_id_type": {
+                                "title": "Content ID Type",
+                                "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                                "type": "string",
+                                "enum": [
+                                  "sku",
+                                  "gtin",
+                                  "offering_id",
+                                  "job_id",
+                                  "hotel_id",
+                                  "flight_id",
+                                  "vehicle_id",
+                                  "listing_id",
+                                  "store_id",
+                                  "program_id",
+                                  "destination_id",
+                                  "app_id"
+                                ]
+                              },
+                              "feed_field_mappings": {
+                                "type": "array",
+                                "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                                "items": {
+                                  "title": "Catalog Field Mapping",
+                                  "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                  "type": "object",
+                                  "properties": {
+                                    "feed_field": {
+                                      "type": "string",
+                                      "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                    },
+                                    "catalog_field": {
+                                      "type": "string",
+                                      "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                    },
+                                    "asset_group_id": {
+                                      "type": "string",
+                                      "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                    },
+                                    "value": {
+                                      "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                    },
+                                    "transform": {
+                                      "type": "string",
+                                      "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                      "enum": [
+                                        "date",
+                                        "divide",
+                                        "boolean",
+                                        "split"
+                                      ]
+                                    },
+                                    "format": {
+                                      "type": "string",
+                                      "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                    },
+                                    "timezone": {
+                                      "type": "string",
+                                      "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                    },
+                                    "by": {
+                                      "type": "number",
+                                      "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                      "exclusiveMinimum": 0
+                                    },
+                                    "separator": {
+                                      "type": "string",
+                                      "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                      "default": ","
+                                    },
+                                    "default": {
+                                      "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "allOf": [
+                                    {
+                                      "not": {
+                                        "required": [
+                                          "feed_field",
+                                          "value"
+                                        ]
+                                      }
+                                    },
+                                    {
+                                      "not": {
+                                        "required": [
+                                          "catalog_field",
+                                          "asset_group_id"
+                                        ]
+                                      }
+                                    }
+                                  ],
+                                  "additionalProperties": true,
+                                  "examples": [
+                                    {
+                                      "description": "Simple field rename",
+                                      "data": {
+                                        "feed_field": "hotel_name",
+                                        "catalog_field": "name"
+                                      }
+                                    },
+                                    {
+                                      "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                      "data": {
+                                        "feed_field": "available_from",
+                                        "catalog_field": "valid_from",
+                                        "transform": "date",
+                                        "format": "YYYYMMDD",
+                                        "timezone": "UTC"
+                                      }
+                                    },
+                                    {
+                                      "description": "Divide cents to dollars",
+                                      "data": {
+                                        "feed_field": "price_cents",
+                                        "catalog_field": "price.amount",
+                                        "transform": "divide",
+                                        "by": 100
+                                      }
+                                    },
+                                    {
+                                      "description": "Static literal injection \u2014 currency not in feed",
+                                      "data": {
+                                        "catalog_field": "price.currency",
+                                        "value": "USD"
+                                      }
+                                    },
+                                    {
+                                      "description": "Image URL assigned to typed asset pool",
+                                      "data": {
+                                        "feed_field": "primary_photo_url",
+                                        "asset_group_id": "images_landscape"
+                                      }
+                                    },
+                                    {
+                                      "description": "Vertical photo URL assigned to vertical pool",
+                                      "data": {
+                                        "feed_field": "portrait_photo_url",
+                                        "asset_group_id": "images_vertical"
+                                      }
+                                    },
+                                    {
+                                      "description": "Split comma-separated tags to array",
+                                      "data": {
+                                        "feed_field": "amenity_list",
+                                        "catalog_field": "amenities",
+                                        "transform": "split",
+                                        "separator": ","
+                                      }
+                                    },
+                                    {
+                                      "description": "Boolean coercion with default",
+                                      "data": {
+                                        "feed_field": "is_available",
+                                        "catalog_field": "available",
+                                        "transform": "boolean",
+                                        "default": false
+                                      }
+                                    }
+                                  ]
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "type"
+                            ],
+                            "additionalProperties": true,
+                            "examples": [
+                              {
+                                "description": "Synced product catalog from Google Merchant Center",
+                                "data": {
+                                  "catalog_id": "gmc-primary",
+                                  "name": "Primary Product Feed",
+                                  "type": "product",
+                                  "url": "https://feeds.acmecorp.com/products.xml",
+                                  "feed_format": "google_merchant_center",
+                                  "update_frequency": "daily"
+                                }
+                              },
+                              {
+                                "description": "Inventory feed for store-level stock data",
+                                "data": {
+                                  "catalog_id": "store-inventory",
+                                  "name": "Store Inventory",
+                                  "type": "inventory",
+                                  "url": "https://feeds.acmecorp.com/inventory.json",
+                                  "feed_format": "custom",
+                                  "update_frequency": "hourly"
+                                }
+                              },
+                              {
+                                "description": "Store locator feed",
+                                "data": {
+                                  "catalog_id": "retail-locations",
+                                  "name": "Retail Locations",
+                                  "type": "store",
+                                  "url": "https://feeds.acmecorp.com/stores.json",
+                                  "feed_format": "custom",
+                                  "update_frequency": "weekly"
+                                }
+                              },
+                              {
+                                "description": "Promotional pricing feed",
+                                "data": {
+                                  "catalog_id": "summer-sale",
+                                  "name": "Summer Sale Promotions",
+                                  "type": "promotion",
+                                  "url": "https://feeds.acmecorp.com/promotions.json",
+                                  "feed_format": "google_merchant_center",
+                                  "update_frequency": "daily"
+                                }
+                              },
+                              {
+                                "description": "Inline offering catalog (no sync needed)",
+                                "data": {
+                                  "type": "offering",
+                                  "items": [
+                                    {
+                                      "offering_id": "summer-sale",
+                                      "name": "Summer Sale",
+                                      "landing_url": "https://acme.com/summer"
+                                    }
+                                  ]
+                                }
+                              },
+                              {
+                                "description": "Reference to a previously synced catalog by ID",
+                                "data": {
+                                  "catalog_id": "gmc-primary",
+                                  "type": "product",
+                                  "ids": [
+                                    "SKU-12345",
+                                    "SKU-67890"
+                                  ]
+                                }
+                              },
+                              {
+                                "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                                "data": {
+                                  "type": "product",
+                                  "gtins": [
+                                    "00013000006040",
+                                    "00013000006057"
+                                  ],
+                                  "content_id_type": "gtin",
+                                  "conversion_events": [
+                                    "purchase",
+                                    "add_to_cart"
+                                  ]
+                                }
+                              },
+                              {
+                                "description": "Inline store catalog with catchment areas",
+                                "data": {
+                                  "catalog_id": "retail-locations",
+                                  "name": "Retail Locations",
+                                  "type": "store",
+                                  "items": [
+                                    {
+                                      "store_id": "amsterdam-flagship",
+                                      "name": "Amsterdam Flagship",
+                                      "location": {
+                                        "lat": 52.3676,
+                                        "lng": 4.9041
+                                      },
+                                      "catchments": [
+                                        {
+                                          "catchment_id": "walk",
+                                          "travel_time": {
+                                            "value": 10,
+                                            "unit": "min"
+                                          },
+                                          "transport_mode": "walking"
+                                        },
+                                        {
+                                          "catchment_id": "drive",
+                                          "travel_time": {
+                                            "value": 15,
+                                            "unit": "min"
+                                          },
+                                          "transport_mode": "driving"
+                                        }
+                                      ]
+                                    }
+                                  ]
+                                }
+                              }
+                            ]
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                "additionalProperties": true
+              },
+              "rights": {
+                "type": "array",
+                "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                "items": {
+                  "title": "Rights Constraint",
+                  "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                  "type": "object",
+                  "properties": {
+                    "rights_id": {
+                      "type": "string",
+                      "description": "Rights grant identifier from the acquire_rights response"
+                    },
+                    "rights_agent": {
+                      "type": "object",
+                      "description": "The agent that granted these rights",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "MCP endpoint URL of the rights agent"
+                        },
+                        "id": {
+                          "type": "string",
+                          "description": "Agent identifier"
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "id"
+                      ]
+                    },
+                    "valid_from": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "Start of the rights validity period"
+                    },
+                    "valid_until": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "End of the rights validity period. Creative should not be served after this time."
+                    },
+                    "uses": {
+                      "type": "array",
+                      "description": "Rights uses covered by this constraint",
+                      "items": {
+                        "title": "Right Use",
+                        "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                        "type": "string",
+                        "enum": [
+                          "likeness",
+                          "voice",
+                          "name",
+                          "endorsement",
+                          "motion_capture",
+                          "signature",
+                          "catchphrase",
+                          "sync",
+                          "background_music",
+                          "editorial",
+                          "commercial"
+                        ],
+                        "enumDescriptions": {
+                          "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                          "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                          "name": "Use of a person's name in advertising or promotional materials",
+                          "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                          "motion_capture": "Use of a person's movement patterns for animation or video",
+                          "signature": "Use of a person's signature or autograph",
+                          "catchphrase": "Use of a person's well-known phrases or sayings",
+                          "sync": "Synchronization of music with visual media (ads, video)",
+                          "background_music": "Use of music as background audio in advertising",
+                          "editorial": "Use in editorial or informational contexts",
+                          "commercial": "Use in commercial advertising and promotional contexts"
+                        }
+                      },
+                      "minItems": 1
+                    },
+                    "countries": {
+                      "type": "array",
+                      "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[A-Z]{2}$"
+                      }
+                    },
+                    "excluded_countries": {
+                      "type": "array",
+                      "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[A-Z]{2}$"
+                      }
+                    },
+                    "impression_cap": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+                    },
+                    "right_type": {
+                      "title": "Right Type",
+                      "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                      "type": "string",
+                      "enum": [
+                        "talent",
+                        "character",
+                        "brand_ip",
+                        "music",
+                        "stock_media"
+                      ],
+                      "enumDescriptions": {
+                        "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                        "character": "Rights to fictional characters for advertising or co-branding",
+                        "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                        "music": "Rights to musical compositions or recordings (sync, background music)",
+                        "stock_media": "Rights to stock photography, video, or audio collections"
+                      }
+                    },
+                    "approval_status": {
+                      "type": "string",
+                      "enum": [
+                        "pending",
+                        "approved",
+                        "rejected"
+                      ],
+                      "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+                    },
+                    "verification_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "rights_id",
+                    "rights_agent",
+                    "uses"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "industry_identifiers": {
+                "type": "array",
+                "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+                "items": {
+                  "title": "Industry Identifier",
+                  "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "title": "Creative Identifier Type",
+                      "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                      "type": "string",
+                      "enum": [
+                        "ad_id",
+                        "isci",
+                        "clearcast_clock"
+                      ],
+                      "enumDescriptions": {
+                        "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                        "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                        "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                      },
+                      "examples": [
+                        "ad_id",
+                        "isci",
+                        "clearcast_clock"
+                      ]
+                    },
+                    "value": {
+                      "type": "string",
+                      "maxLength": 64,
+                      "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "value"
+                  ],
+                  "additionalProperties": true
+                },
+                "uniqueItems": true
+              },
+              "provenance": {
+                "title": "Provenance",
+                "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+                "type": "object",
+                "properties": {
+                  "digital_source_type": {
+                    "title": "Digital Source Type",
+                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                    "type": "string",
+                    "enum": [
+                      "digital_capture",
+                      "digital_creation",
+                      "trained_algorithmic_media",
+                      "composite_with_trained_algorithmic_media",
+                      "algorithmic_media",
+                      "composite_capture",
+                      "composite_synthetic",
+                      "human_edits",
+                      "data_driven_media"
+                    ],
+                    "enumDescriptions": {
+                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                      "composite_capture": "Multiple digital captures composited together without AI",
+                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                    }
+                  },
+                  "ai_tool": {
+                    "type": "object",
+                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                      },
+                      "version": {
+                        "type": "string",
+                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                      },
+                      "provider": {
+                        "type": "string",
+                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "human_oversight": {
+                    "type": "string",
+                    "description": "Level of human involvement in the AI-assisted creation process",
+                    "enum": [
+                      "none",
+                      "prompt_only",
+                      "selected",
+                      "edited",
+                      "directed"
+                    ],
+                    "enumDescriptions": {
+                      "none": "Fully automated with no human involvement in generation",
+                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                      "selected": "Human selected from multiple AI-generated candidates",
+                      "edited": "Human edited or refined AI-generated output",
+                      "directed": "Human directed the creative process with AI as an assistive tool"
+                    }
+                  },
+                  "declared_by": {
+                    "type": "object",
+                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent or service that declared this provenance"
+                      },
+                      "role": {
+                        "type": "string",
+                        "enum": [
+                          "creator",
+                          "advertiser",
+                          "agency",
+                          "platform",
+                          "tool"
+                        ],
+                        "description": "Role of the declaring party in the supply chain",
+                        "enumDescriptions": {
+                          "creator": "The party that created or generated the content",
+                          "advertiser": "The brand or advertiser that owns the content",
+                          "agency": "Agency acting on behalf of the advertiser",
+                          "platform": "Ad platform or publisher that processed the content",
+                          "tool": "Automated tool or service that attached provenance metadata"
+                        }
+                      }
+                    },
+                    "required": [
+                      "role"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "declared_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                  },
+                  "created_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this content was created or generated (ISO 8601)"
+                  },
+                  "c2pa": {
+                    "type": "object",
+                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                    "properties": {
+                      "manifest_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the C2PA manifest store for this content"
+                      }
+                    },
+                    "required": [
+                      "manifest_url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "disclosure": {
+                    "type": "object",
+                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                    "properties": {
+                      "required": {
+                        "type": "boolean",
+                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                      },
+                      "jurisdictions": {
+                        "type": "array",
+                        "description": "Jurisdictions where disclosure obligations apply",
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "country": {
+                              "type": "string",
+                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                            },
+                            "region": {
+                              "type": "string",
+                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                            },
+                            "regulation": {
+                              "type": "string",
+                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                            },
+                            "label_text": {
+                              "type": "string",
+                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                            },
+                            "render_guidance": {
+                              "type": "object",
+                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                              "minProperties": 1,
+                              "properties": {
+                                "persistence": {
+                                  "title": "Disclosure Persistence",
+                                  "description": "How long the disclosure must persist during content playback or display",
+                                  "type": "string",
+                                  "enum": [
+                                    "continuous",
+                                    "initial",
+                                    "flexible"
+                                  ],
+                                  "enumDescriptions": {
+                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                  }
+                                },
+                                "min_duration_ms": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                },
+                                "positions": {
+                                  "type": "array",
+                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                  "items": {
+                                    "title": "Disclosure Position",
+                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                    "type": "string",
+                                    "enum": [
+                                      "prominent",
+                                      "footer",
+                                      "audio",
+                                      "subtitle",
+                                      "overlay",
+                                      "end_card",
+                                      "pre_roll",
+                                      "companion"
+                                    ]
+                                  },
+                                  "minItems": 1,
+                                  "uniqueItems": true
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "country",
+                            "regulation"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "minItems": 1
+                      }
+                    },
+                    "required": [
+                      "required"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "verification": {
+                    "type": "array",
+                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                    "minItems": 1,
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "verified_by": {
+                          "type": "string",
+                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                        },
+                        "verified_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When the verification was performed (ISO 8601)"
+                        },
+                        "result": {
+                          "type": "string",
+                          "enum": [
+                            "authentic",
+                            "ai_generated",
+                            "ai_modified",
+                            "inconclusive"
+                          ],
+                          "description": "Verification outcome"
+                        },
+                        "confidence": {
+                          "type": "number",
+                          "minimum": 0,
+                          "maximum": 1,
+                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                        },
+                        "details_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the full verification report"
+                        }
+                      },
+                      "required": [
+                        "verified_by",
+                        "result"
+                      ],
+                      "additionalProperties": true
+                    }
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "additionalProperties": true
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "assets"
+            ],
+            "additionalProperties": true
+          },
+          "inputs": {
+            "type": "array",
+            "description": "Array of input sets for generating multiple preview variants",
+            "items": {
+              "type": "object",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for this input set"
+                },
+                "macros": {
+                  "type": "object",
+                  "description": "Macro values to use for this preview",
+                  "additionalProperties": {
+                    "type": "string"
+                  }
+                },
+                "context_description": {
+                  "type": "string",
+                  "description": "Natural language description of the context for AI-generated content"
+                }
+              },
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "template_id": {
+            "type": "string",
+            "description": "Specific template ID for custom format rendering"
+          },
+          "quality": {
+            "title": "Creative Quality",
+            "description": "Render quality for this preview. Overrides batch-level default.",
+            "type": "string",
+            "enum": [
+              "draft",
+              "production"
+            ],
+            "enumDescriptions": {
+              "draft": "Fast, lower-fidelity output for iteration and review",
+              "production": "Full-quality output for final delivery"
+            }
+          },
+          "output_format": {
+            "title": "Preview Output Format",
+            "description": "Output format for this preview. Overrides batch-level default.",
+            "type": "string",
+            "enum": [
+              "url",
+              "html"
+            ],
+            "default": "url"
+          },
+          "item_limit": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Maximum number of catalog items to render in this preview."
+          }
+        },
+        "required": [
+          "creative_manifest"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1,
+      "maxItems": 50
+    },
+    "variant_id": {
+      "type": "string",
+      "description": "Platform-assigned variant identifier from get_creative_delivery response. Required when request_type is 'variant'."
+    },
+    "creative_id": {
+      "type": "string",
+      "description": "Creative identifier for context. Used in variant mode."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "request_type"
+  ],
+  "allOf": [
+    {
+      "if": {
+        "properties": {
+          "request_type": {
+            "const": "single"
+          }
+        }
+      },
+      "then": {
+        "required": [
+          "creative_manifest"
+        ]
+      }
+    },
+    {
+      "if": {
+        "properties": {
+          "request_type": {
+            "const": "batch"
+          }
+        }
+      },
+      "then": {
+        "required": [
+          "requests"
+        ]
+      }
+    },
+    {
+      "if": {
+        "properties": {
+          "request_type": {
+            "const": "variant"
+          }
+        }
+      },
+      "then": {
+        "required": [
+          "variant_id"
+        ]
+      }
+    }
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.284Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/preview-creative-response.json b/schemas/cache/bundled/creative/preview-creative-response.json
new file mode 100644
index 000000000..ae8e91e19
--- /dev/null
+++ b/schemas/cache/bundled/creative/preview-creative-response.json
@@ -0,0 +1,7182 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Preview Creative Response",
+  "description": "Response containing preview links for one or more creatives. Format matches the request: single preview response for single requests, batch results for batch requests.",
+  "oneOf": [
+    {
+      "title": "PreviewCreativeSingleResponse",
+      "type": "object",
+      "description": "Single preview response - each preview URL returns an HTML page that can be embedded in an iframe",
+      "properties": {
+        "response_type": {
+          "type": "string",
+          "const": "single",
+          "description": "Discriminator indicating this is a single preview response"
+        },
+        "previews": {
+          "type": "array",
+          "description": "Array of preview variants. Each preview corresponds to an input set from the request. If no inputs were provided, returns a single default preview.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "preview_id": {
+                "type": "string",
+                "description": "Unique identifier for this preview variant"
+              },
+              "renders": {
+                "type": "array",
+                "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats (video + banner), multi-placement formats, and adaptive formats render as multiple pieces.",
+                "items": {
+                  "title": "Preview Render",
+                  "description": "A single rendered piece of a creative preview with discriminated output format",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "description": "URL-only preview format",
+                      "properties": {
+                        "render_id": {
+                          "type": "string",
+                          "description": "Unique identifier for this rendered piece within the variant"
+                        },
+                        "output_format": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating preview_url is provided"
+                        },
+                        "preview_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                        },
+                        "role": {
+                          "type": "string",
+                          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                        },
+                        "dimensions": {
+                          "type": "object",
+                          "description": "Dimensions for this rendered piece",
+                          "properties": {
+                            "width": {
+                              "type": "number",
+                              "minimum": 0
+                            },
+                            "height": {
+                              "type": "number",
+                              "minimum": 0
+                            }
+                          },
+                          "required": [
+                            "width",
+                            "height"
+                          ]
+                        },
+                        "embedding": {
+                          "type": "object",
+                          "description": "Optional security and embedding metadata for safe iframe integration",
+                          "properties": {
+                            "recommended_sandbox": {
+                              "type": "string",
+                              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                            },
+                            "requires_https": {
+                              "type": "boolean",
+                              "description": "Whether this output requires HTTPS for secure embedding"
+                            },
+                            "supports_fullscreen": {
+                              "type": "boolean",
+                              "description": "Whether this output supports fullscreen mode"
+                            },
+                            "csp_policy": {
+                              "type": "string",
+                              "description": "Content Security Policy requirements for embedding"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "render_id",
+                        "output_format",
+                        "preview_url",
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "description": "HTML-only preview format",
+                      "properties": {
+                        "render_id": {
+                          "type": "string",
+                          "description": "Unique identifier for this rendered piece within the variant"
+                        },
+                        "output_format": {
+                          "type": "string",
+                          "const": "html",
+                          "description": "Discriminator indicating preview_html is provided"
+                        },
+                        "preview_html": {
+                          "type": "string",
+                          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                        },
+                        "role": {
+                          "type": "string",
+                          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                        },
+                        "dimensions": {
+                          "type": "object",
+                          "description": "Dimensions for this rendered piece",
+                          "properties": {
+                            "width": {
+                              "type": "number",
+                              "minimum": 0
+                            },
+                            "height": {
+                              "type": "number",
+                              "minimum": 0
+                            }
+                          },
+                          "required": [
+                            "width",
+                            "height"
+                          ]
+                        },
+                        "embedding": {
+                          "type": "object",
+                          "description": "Optional security and embedding metadata",
+                          "properties": {
+                            "recommended_sandbox": {
+                              "type": "string",
+                              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                            },
+                            "requires_https": {
+                              "type": "boolean",
+                              "description": "Whether this output requires HTTPS for secure embedding"
+                            },
+                            "supports_fullscreen": {
+                              "type": "boolean",
+                              "description": "Whether this output supports fullscreen mode"
+                            },
+                            "csp_policy": {
+                              "type": "string",
+                              "description": "Content Security Policy requirements for embedding"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "render_id",
+                        "output_format",
+                        "preview_html",
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "description": "Both URL and HTML preview format",
+                      "properties": {
+                        "render_id": {
+                          "type": "string",
+                          "description": "Unique identifier for this rendered piece within the variant"
+                        },
+                        "output_format": {
+                          "type": "string",
+                          "const": "both",
+                          "description": "Discriminator indicating both preview_url and preview_html are provided"
+                        },
+                        "preview_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                        },
+                        "preview_html": {
+                          "type": "string",
+                          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                        },
+                        "role": {
+                          "type": "string",
+                          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                        },
+                        "dimensions": {
+                          "type": "object",
+                          "description": "Dimensions for this rendered piece",
+                          "properties": {
+                            "width": {
+                              "type": "number",
+                              "minimum": 0
+                            },
+                            "height": {
+                              "type": "number",
+                              "minimum": 0
+                            }
+                          },
+                          "required": [
+                            "width",
+                            "height"
+                          ]
+                        },
+                        "embedding": {
+                          "type": "object",
+                          "description": "Optional security and embedding metadata for safe iframe integration",
+                          "properties": {
+                            "recommended_sandbox": {
+                              "type": "string",
+                              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                            },
+                            "requires_https": {
+                              "type": "boolean",
+                              "description": "Whether this output requires HTTPS for secure embedding"
+                            },
+                            "supports_fullscreen": {
+                              "type": "boolean",
+                              "description": "Whether this output supports fullscreen mode"
+                            },
+                            "csp_policy": {
+                              "type": "string",
+                              "description": "Content Security Policy requirements for embedding"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "render_id",
+                        "output_format",
+                        "preview_url",
+                        "preview_html",
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                "minItems": 1
+              },
+              "input": {
+                "type": "object",
+                "description": "The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.",
+                "properties": {
+                  "name": {
+                    "type": "string",
+                    "description": "Human-readable name for this variant"
+                  },
+                  "macros": {
+                    "type": "object",
+                    "description": "Macro values applied to this variant",
+                    "additionalProperties": {
+                      "type": "string"
+                    }
+                  },
+                  "context_description": {
+                    "type": "string",
+                    "description": "Context description applied to this variant"
+                  }
+                },
+                "required": [
+                  "name"
+                ]
+              }
+            },
+            "required": [
+              "preview_id",
+              "renders",
+              "input"
+            ]
+          },
+          "minItems": 1
+        },
+        "interactive_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Optional URL to an interactive testing page that shows all preview variants with controls to switch between them, modify macro values, and test different scenarios."
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when preview links expire"
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "response_type",
+        "previews",
+        "expires_at"
+      ],
+      "additionalProperties": true
+    },
+    {
+      "title": "PreviewCreativeBatchResponse",
+      "type": "object",
+      "description": "Batch preview response - contains results for multiple creative requests",
+      "properties": {
+        "response_type": {
+          "type": "string",
+          "const": "batch",
+          "description": "Discriminator indicating this is a batch preview response"
+        },
+        "results": {
+          "type": "array",
+          "description": "Array of preview results corresponding to each request in the same order. results[0] is the result for requests[0], results[1] for requests[1], etc. Order is guaranteed even when some requests fail. Each result contains either a successful preview response or an error.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "success": {
+                "type": "boolean",
+                "description": "Whether this preview request succeeded"
+              },
+              "creative_id": {
+                "type": "string",
+                "description": "ID of the creative this result corresponds to. Enables correlation when processing batch results."
+              },
+              "response": {
+                "type": "object",
+                "description": "Preview data for successful requests",
+                "properties": {
+                  "previews": {
+                    "type": "array",
+                    "description": "Array of preview variants for this creative",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "preview_id": {
+                          "type": "string"
+                        },
+                        "renders": {
+                          "type": "array",
+                          "items": {
+                            "title": "Preview Render",
+                            "description": "A single rendered piece of a creative preview with discriminated output format",
+                            "oneOf": [
+                              {
+                                "type": "object",
+                                "description": "URL-only preview format",
+                                "properties": {
+                                  "render_id": {
+                                    "type": "string",
+                                    "description": "Unique identifier for this rendered piece within the variant"
+                                  },
+                                  "output_format": {
+                                    "type": "string",
+                                    "const": "url",
+                                    "description": "Discriminator indicating preview_url is provided"
+                                  },
+                                  "preview_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                                  },
+                                  "dimensions": {
+                                    "type": "object",
+                                    "description": "Dimensions for this rendered piece",
+                                    "properties": {
+                                      "width": {
+                                        "type": "number",
+                                        "minimum": 0
+                                      },
+                                      "height": {
+                                        "type": "number",
+                                        "minimum": 0
+                                      }
+                                    },
+                                    "required": [
+                                      "width",
+                                      "height"
+                                    ]
+                                  },
+                                  "embedding": {
+                                    "type": "object",
+                                    "description": "Optional security and embedding metadata for safe iframe integration",
+                                    "properties": {
+                                      "recommended_sandbox": {
+                                        "type": "string",
+                                        "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                      },
+                                      "requires_https": {
+                                        "type": "boolean",
+                                        "description": "Whether this output requires HTTPS for secure embedding"
+                                      },
+                                      "supports_fullscreen": {
+                                        "type": "boolean",
+                                        "description": "Whether this output supports fullscreen mode"
+                                      },
+                                      "csp_policy": {
+                                        "type": "string",
+                                        "description": "Content Security Policy requirements for embedding"
+                                      }
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "render_id",
+                                  "output_format",
+                                  "preview_url",
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              {
+                                "type": "object",
+                                "description": "HTML-only preview format",
+                                "properties": {
+                                  "render_id": {
+                                    "type": "string",
+                                    "description": "Unique identifier for this rendered piece within the variant"
+                                  },
+                                  "output_format": {
+                                    "type": "string",
+                                    "const": "html",
+                                    "description": "Discriminator indicating preview_html is provided"
+                                  },
+                                  "preview_html": {
+                                    "type": "string",
+                                    "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                                  },
+                                  "dimensions": {
+                                    "type": "object",
+                                    "description": "Dimensions for this rendered piece",
+                                    "properties": {
+                                      "width": {
+                                        "type": "number",
+                                        "minimum": 0
+                                      },
+                                      "height": {
+                                        "type": "number",
+                                        "minimum": 0
+                                      }
+                                    },
+                                    "required": [
+                                      "width",
+                                      "height"
+                                    ]
+                                  },
+                                  "embedding": {
+                                    "type": "object",
+                                    "description": "Optional security and embedding metadata",
+                                    "properties": {
+                                      "recommended_sandbox": {
+                                        "type": "string",
+                                        "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                      },
+                                      "requires_https": {
+                                        "type": "boolean",
+                                        "description": "Whether this output requires HTTPS for secure embedding"
+                                      },
+                                      "supports_fullscreen": {
+                                        "type": "boolean",
+                                        "description": "Whether this output supports fullscreen mode"
+                                      },
+                                      "csp_policy": {
+                                        "type": "string",
+                                        "description": "Content Security Policy requirements for embedding"
+                                      }
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "render_id",
+                                  "output_format",
+                                  "preview_html",
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              {
+                                "type": "object",
+                                "description": "Both URL and HTML preview format",
+                                "properties": {
+                                  "render_id": {
+                                    "type": "string",
+                                    "description": "Unique identifier for this rendered piece within the variant"
+                                  },
+                                  "output_format": {
+                                    "type": "string",
+                                    "const": "both",
+                                    "description": "Discriminator indicating both preview_url and preview_html are provided"
+                                  },
+                                  "preview_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                                  },
+                                  "preview_html": {
+                                    "type": "string",
+                                    "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                                  },
+                                  "dimensions": {
+                                    "type": "object",
+                                    "description": "Dimensions for this rendered piece",
+                                    "properties": {
+                                      "width": {
+                                        "type": "number",
+                                        "minimum": 0
+                                      },
+                                      "height": {
+                                        "type": "number",
+                                        "minimum": 0
+                                      }
+                                    },
+                                    "required": [
+                                      "width",
+                                      "height"
+                                    ]
+                                  },
+                                  "embedding": {
+                                    "type": "object",
+                                    "description": "Optional security and embedding metadata for safe iframe integration",
+                                    "properties": {
+                                      "recommended_sandbox": {
+                                        "type": "string",
+                                        "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                      },
+                                      "requires_https": {
+                                        "type": "boolean",
+                                        "description": "Whether this output requires HTTPS for secure embedding"
+                                      },
+                                      "supports_fullscreen": {
+                                        "type": "boolean",
+                                        "description": "Whether this output supports fullscreen mode"
+                                      },
+                                      "csp_policy": {
+                                        "type": "string",
+                                        "description": "Content Security Policy requirements for embedding"
+                                      }
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "render_id",
+                                  "output_format",
+                                  "preview_url",
+                                  "preview_html",
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              }
+                            ]
+                          },
+                          "minItems": 1
+                        },
+                        "input": {
+                          "type": "object",
+                          "properties": {
+                            "name": {
+                              "type": "string"
+                            },
+                            "macros": {
+                              "type": "object",
+                              "additionalProperties": {
+                                "type": "string"
+                              }
+                            },
+                            "context_description": {
+                              "type": "string"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ]
+                        }
+                      },
+                      "required": [
+                        "preview_id",
+                        "renders",
+                        "input"
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "interactive_url": {
+                    "type": "string",
+                    "format": "uri"
+                  },
+                  "expires_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the preview URLs expire"
+                  }
+                },
+                "required": [
+                  "previews",
+                  "expires_at"
+                ]
+              },
+              "errors": {
+                "type": "array",
+                "description": "Errors for failed requests",
+                "items": {
+                  "title": "Error",
+                  "description": "Standard error structure for task-specific errors and warnings",
+                  "type": "object",
+                  "properties": {
+                    "code": {
+                      "type": "string",
+                      "minLength": 1,
+                      "maxLength": 64,
+                      "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+                    },
+                    "message": {
+                      "type": "string",
+                      "description": "Human-readable error message"
+                    },
+                    "field": {
+                      "type": "string",
+                      "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+                    },
+                    "suggestion": {
+                      "type": "string",
+                      "description": "Suggested fix for the error"
+                    },
+                    "retry_after": {
+                      "type": "number",
+                      "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                      "minimum": 1,
+                      "maximum": 3600
+                    },
+                    "details": {
+                      "type": "object",
+                      "description": "Additional task-specific error details",
+                      "additionalProperties": true
+                    },
+                    "recovery": {
+                      "type": "string",
+                      "enum": [
+                        "transient",
+                        "correctable",
+                        "terminal"
+                      ],
+                      "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "message"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "success",
+              "creative_id"
+            ],
+            "oneOf": [
+              {
+                "title": "PreviewBatchResultSuccess",
+                "properties": {
+                  "success": {
+                    "type": "boolean",
+                    "const": true,
+                    "description": "Indicates this preview request succeeded"
+                  }
+                },
+                "required": [
+                  "response"
+                ]
+              },
+              {
+                "title": "PreviewBatchResultError",
+                "properties": {
+                  "success": {
+                    "type": "boolean",
+                    "const": false,
+                    "description": "Indicates this preview request failed"
+                  }
+                },
+                "required": [
+                  "errors"
+                ]
+              }
+            ]
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "response_type",
+        "results"
+      ],
+      "additionalProperties": true
+    },
+    {
+      "title": "PreviewCreativeVariantResponse",
+      "type": "object",
+      "description": "Variant preview response - shows what a specific creative variant looked like when served during delivery",
+      "properties": {
+        "response_type": {
+          "type": "string",
+          "const": "variant",
+          "description": "Discriminator indicating this is a variant preview response"
+        },
+        "variant_id": {
+          "type": "string",
+          "description": "Platform-assigned variant identifier"
+        },
+        "creative_id": {
+          "type": "string",
+          "description": "Creative identifier this variant belongs to"
+        },
+        "previews": {
+          "type": "array",
+          "description": "Array of rendered pieces for this variant. Most formats render as a single piece.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "preview_id": {
+                "type": "string",
+                "description": "Unique identifier for this preview"
+              },
+              "renders": {
+                "type": "array",
+                "description": "Rendered pieces for this variant",
+                "items": {
+                  "title": "Preview Render",
+                  "description": "A single rendered piece of a creative preview with discriminated output format",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "description": "URL-only preview format",
+                      "properties": {
+                        "render_id": {
+                          "type": "string",
+                          "description": "Unique identifier for this rendered piece within the variant"
+                        },
+                        "output_format": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating preview_url is provided"
+                        },
+                        "preview_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                        },
+                        "role": {
+                          "type": "string",
+                          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                        },
+                        "dimensions": {
+                          "type": "object",
+                          "description": "Dimensions for this rendered piece",
+                          "properties": {
+                            "width": {
+                              "type": "number",
+                              "minimum": 0
+                            },
+                            "height": {
+                              "type": "number",
+                              "minimum": 0
+                            }
+                          },
+                          "required": [
+                            "width",
+                            "height"
+                          ]
+                        },
+                        "embedding": {
+                          "type": "object",
+                          "description": "Optional security and embedding metadata for safe iframe integration",
+                          "properties": {
+                            "recommended_sandbox": {
+                              "type": "string",
+                              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                            },
+                            "requires_https": {
+                              "type": "boolean",
+                              "description": "Whether this output requires HTTPS for secure embedding"
+                            },
+                            "supports_fullscreen": {
+                              "type": "boolean",
+                              "description": "Whether this output supports fullscreen mode"
+                            },
+                            "csp_policy": {
+                              "type": "string",
+                              "description": "Content Security Policy requirements for embedding"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "render_id",
+                        "output_format",
+                        "preview_url",
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "description": "HTML-only preview format",
+                      "properties": {
+                        "render_id": {
+                          "type": "string",
+                          "description": "Unique identifier for this rendered piece within the variant"
+                        },
+                        "output_format": {
+                          "type": "string",
+                          "const": "html",
+                          "description": "Discriminator indicating preview_html is provided"
+                        },
+                        "preview_html": {
+                          "type": "string",
+                          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                        },
+                        "role": {
+                          "type": "string",
+                          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                        },
+                        "dimensions": {
+                          "type": "object",
+                          "description": "Dimensions for this rendered piece",
+                          "properties": {
+                            "width": {
+                              "type": "number",
+                              "minimum": 0
+                            },
+                            "height": {
+                              "type": "number",
+                              "minimum": 0
+                            }
+                          },
+                          "required": [
+                            "width",
+                            "height"
+                          ]
+                        },
+                        "embedding": {
+                          "type": "object",
+                          "description": "Optional security and embedding metadata",
+                          "properties": {
+                            "recommended_sandbox": {
+                              "type": "string",
+                              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                            },
+                            "requires_https": {
+                              "type": "boolean",
+                              "description": "Whether this output requires HTTPS for secure embedding"
+                            },
+                            "supports_fullscreen": {
+                              "type": "boolean",
+                              "description": "Whether this output supports fullscreen mode"
+                            },
+                            "csp_policy": {
+                              "type": "string",
+                              "description": "Content Security Policy requirements for embedding"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "render_id",
+                        "output_format",
+                        "preview_html",
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "description": "Both URL and HTML preview format",
+                      "properties": {
+                        "render_id": {
+                          "type": "string",
+                          "description": "Unique identifier for this rendered piece within the variant"
+                        },
+                        "output_format": {
+                          "type": "string",
+                          "const": "both",
+                          "description": "Discriminator indicating both preview_url and preview_html are provided"
+                        },
+                        "preview_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                        },
+                        "preview_html": {
+                          "type": "string",
+                          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                        },
+                        "role": {
+                          "type": "string",
+                          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                        },
+                        "dimensions": {
+                          "type": "object",
+                          "description": "Dimensions for this rendered piece",
+                          "properties": {
+                            "width": {
+                              "type": "number",
+                              "minimum": 0
+                            },
+                            "height": {
+                              "type": "number",
+                              "minimum": 0
+                            }
+                          },
+                          "required": [
+                            "width",
+                            "height"
+                          ]
+                        },
+                        "embedding": {
+                          "type": "object",
+                          "description": "Optional security and embedding metadata for safe iframe integration",
+                          "properties": {
+                            "recommended_sandbox": {
+                              "type": "string",
+                              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                            },
+                            "requires_https": {
+                              "type": "boolean",
+                              "description": "Whether this output requires HTTPS for secure embedding"
+                            },
+                            "supports_fullscreen": {
+                              "type": "boolean",
+                              "description": "Whether this output supports fullscreen mode"
+                            },
+                            "csp_policy": {
+                              "type": "string",
+                              "description": "Content Security Policy requirements for embedding"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "render_id",
+                        "output_format",
+                        "preview_url",
+                        "preview_html",
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "preview_id",
+              "renders"
+            ]
+          },
+          "minItems": 1
+        },
+        "manifest": {
+          "title": "Creative Manifest",
+          "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets",
+          "type": "object",
+          "properties": {
+            "format_id": {
+              "title": "Format ID",
+              "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            },
+            "assets": {
+              "type": "object",
+              "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+              "patternProperties": {
+                "^[a-z0-9_]+$": {
+                  "anyOf": [
+                    {
+                      "title": "Image Asset",
+                      "description": "Image asset with URL and dimensions",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the image asset"
+                        },
+                        "width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Width in pixels"
+                        },
+                        "height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Height in pixels"
+                        },
+                        "format": {
+                          "type": "string",
+                          "description": "Image file format (jpg, png, gif, webp, etc.)"
+                        },
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Alternative text for accessibility",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "width",
+                        "height"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Video Asset",
+                      "description": "Video asset with URL and technical specifications including audio track properties",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the video asset"
+                        },
+                        "width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Width in pixels"
+                        },
+                        "height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Height in pixels"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Video duration in milliseconds",
+                          "minimum": 1
+                        },
+                        "file_size_bytes": {
+                          "type": "integer",
+                          "description": "File size in bytes",
+                          "minimum": 1
+                        },
+                        "container_format": {
+                          "type": "string",
+                          "description": "Video container format (mp4, webm, mov, etc.)"
+                        },
+                        "video_codec": {
+                          "type": "string",
+                          "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                        },
+                        "video_bitrate_kbps": {
+                          "type": "integer",
+                          "description": "Video stream bitrate in kilobits per second",
+                          "minimum": 1
+                        },
+                        "frame_rate": {
+                          "type": "string",
+                          "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                        },
+                        "frame_rate_type": {
+                          "type": "string",
+                          "enum": [
+                            "constant",
+                            "variable"
+                          ],
+                          "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                        },
+                        "scan_type": {
+                          "type": "string",
+                          "enum": [
+                            "progressive",
+                            "interlaced"
+                          ],
+                          "description": "Scan type of the video"
+                        },
+                        "color_space": {
+                          "type": "string",
+                          "enum": [
+                            "rec709",
+                            "rec2020",
+                            "rec2100",
+                            "srgb",
+                            "dci_p3"
+                          ],
+                          "description": "Color space of the video"
+                        },
+                        "hdr_format": {
+                          "type": "string",
+                          "enum": [
+                            "sdr",
+                            "hdr10",
+                            "hdr10_plus",
+                            "hlg",
+                            "dolby_vision"
+                          ],
+                          "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                        },
+                        "chroma_subsampling": {
+                          "type": "string",
+                          "enum": [
+                            "4:2:0",
+                            "4:2:2",
+                            "4:4:4"
+                          ],
+                          "description": "Chroma subsampling format"
+                        },
+                        "video_bit_depth": {
+                          "type": "integer",
+                          "enum": [
+                            8,
+                            10,
+                            12
+                          ],
+                          "description": "Video bit depth"
+                        },
+                        "gop_interval_seconds": {
+                          "type": "number",
+                          "description": "GOP/keyframe interval in seconds"
+                        },
+                        "gop_type": {
+                          "type": "string",
+                          "enum": [
+                            "closed",
+                            "open"
+                          ],
+                          "description": "GOP structure type"
+                        },
+                        "moov_atom_position": {
+                          "type": "string",
+                          "enum": [
+                            "start",
+                            "end"
+                          ],
+                          "description": "Position of moov atom in MP4 container"
+                        },
+                        "has_audio": {
+                          "type": "boolean",
+                          "description": "Whether the video contains an audio track"
+                        },
+                        "audio_codec": {
+                          "type": "string",
+                          "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                        },
+                        "audio_sampling_rate_hz": {
+                          "type": "integer",
+                          "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                        },
+                        "audio_channels": {
+                          "type": "string",
+                          "enum": [
+                            "mono",
+                            "stereo",
+                            "5.1",
+                            "7.1"
+                          ],
+                          "description": "Audio channel configuration"
+                        },
+                        "audio_bit_depth": {
+                          "type": "integer",
+                          "enum": [
+                            16,
+                            24,
+                            32
+                          ],
+                          "description": "Audio bit depth"
+                        },
+                        "audio_bitrate_kbps": {
+                          "type": "integer",
+                          "description": "Audio bitrate in kilobits per second",
+                          "minimum": 1
+                        },
+                        "audio_loudness_lufs": {
+                          "type": "number",
+                          "description": "Integrated loudness in LUFS"
+                        },
+                        "audio_true_peak_dbfs": {
+                          "type": "number",
+                          "description": "True peak level in dBFS"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the video content",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "width",
+                        "height"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Audio Asset",
+                      "description": "Audio asset with URL and technical specifications",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the audio asset"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Audio duration in milliseconds",
+                          "minimum": 0
+                        },
+                        "file_size_bytes": {
+                          "type": "integer",
+                          "description": "File size in bytes",
+                          "minimum": 1
+                        },
+                        "container_format": {
+                          "type": "string",
+                          "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                        },
+                        "codec": {
+                          "type": "string",
+                          "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                        },
+                        "sampling_rate_hz": {
+                          "type": "integer",
+                          "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                        },
+                        "channels": {
+                          "type": "string",
+                          "enum": [
+                            "mono",
+                            "stereo",
+                            "5.1",
+                            "7.1"
+                          ],
+                          "description": "Channel configuration"
+                        },
+                        "bit_depth": {
+                          "type": "integer",
+                          "enum": [
+                            16,
+                            24,
+                            32
+                          ],
+                          "description": "Bit depth"
+                        },
+                        "bitrate_kbps": {
+                          "type": "integer",
+                          "description": "Bitrate in kilobits per second",
+                          "minimum": 1
+                        },
+                        "loudness_lufs": {
+                          "type": "number",
+                          "description": "Integrated loudness in LUFS"
+                        },
+                        "true_peak_dbfs": {
+                          "type": "number",
+                          "description": "True peak level in dBFS"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "VAST Asset",
+                      "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "url",
+                              "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL endpoint that returns VAST XML"
+                            },
+                            "vast_version": {
+                              "title": "VAST Version",
+                              "description": "VAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "2.0",
+                                "3.0",
+                                "4.0",
+                                "4.1",
+                                "4.2"
+                              ]
+                            },
+                            "vpaid_enabled": {
+                              "type": "boolean",
+                              "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected video duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "VAST Tracking Event",
+                                "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "rewind",
+                                  "skip",
+                                  "playerExpand",
+                                  "playerCollapse",
+                                  "fullscreen",
+                                  "exitFullscreen",
+                                  "progress",
+                                  "notUsed",
+                                  "otherAdInteraction",
+                                  "interactiveStart",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "closeLinear",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this VAST tag"
+                            },
+                            "captions_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to captions file (WebVTT, SRT, etc.)",
+                              "x-accessibility": true
+                            },
+                            "audio_description_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to audio description track for visually impaired users",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "inline",
+                              "description": "Discriminator indicating VAST is delivered as inline XML content"
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Inline VAST XML content"
+                            },
+                            "vast_version": {
+                              "title": "VAST Version",
+                              "description": "VAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "2.0",
+                                "3.0",
+                                "4.0",
+                                "4.1",
+                                "4.2"
+                              ]
+                            },
+                            "vpaid_enabled": {
+                              "type": "boolean",
+                              "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected video duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "VAST Tracking Event",
+                                "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "rewind",
+                                  "skip",
+                                  "playerExpand",
+                                  "playerCollapse",
+                                  "fullscreen",
+                                  "exitFullscreen",
+                                  "progress",
+                                  "notUsed",
+                                  "otherAdInteraction",
+                                  "interactiveStart",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "closeLinear",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this VAST tag"
+                            },
+                            "captions_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to captions file (WebVTT, SRT, etc.)",
+                              "x-accessibility": true
+                            },
+                            "audio_description_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to audio description track for visually impaired users",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    {
+                      "title": "Text Asset",
+                      "description": "Text content asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "Text content"
+                        },
+                        "language": {
+                          "type": "string",
+                          "description": "Language code (e.g., 'en', 'es', 'fr')"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "URL Asset",
+                      "description": "URL reference asset",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL reference"
+                        },
+                        "url_type": {
+                          "title": "URL Asset Type",
+                          "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                          "type": "string",
+                          "enum": [
+                            "clickthrough",
+                            "tracker_pixel",
+                            "tracker_script"
+                          ]
+                        },
+                        "description": {
+                          "type": "string",
+                          "description": "Description of what this URL points to"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "HTML Asset",
+                      "description": "HTML content asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "HTML content"
+                        },
+                        "version": {
+                          "type": "string",
+                          "description": "HTML version (e.g., 'HTML5')"
+                        },
+                        "accessibility": {
+                          "type": "object",
+                          "description": "Self-declared accessibility properties for this opaque creative",
+                          "x-accessibility": true,
+                          "properties": {
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Text alternative describing the creative content"
+                            },
+                            "keyboard_navigable": {
+                              "type": "boolean",
+                              "description": "Whether the creative can be fully operated via keyboard"
+                            },
+                            "motion_control": {
+                              "type": "boolean",
+                              "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                            },
+                            "screen_reader_tested": {
+                              "type": "boolean",
+                              "description": "Whether the creative has been tested with screen readers"
+                            }
+                          }
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "JavaScript Asset",
+                      "description": "JavaScript code asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "JavaScript content"
+                        },
+                        "module_type": {
+                          "title": "JavaScript Module Type",
+                          "description": "JavaScript module type",
+                          "type": "string",
+                          "enum": [
+                            "esm",
+                            "commonjs",
+                            "script"
+                          ]
+                        },
+                        "accessibility": {
+                          "type": "object",
+                          "description": "Self-declared accessibility properties for this opaque creative",
+                          "x-accessibility": true,
+                          "properties": {
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Text alternative describing the creative content"
+                            },
+                            "keyboard_navigable": {
+                              "type": "boolean",
+                              "description": "Whether the creative can be fully operated via keyboard"
+                            },
+                            "motion_control": {
+                              "type": "boolean",
+                              "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                            },
+                            "screen_reader_tested": {
+                              "type": "boolean",
+                              "description": "Whether the creative has been tested with screen readers"
+                            }
+                          }
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Webhook Asset",
+                      "description": "Webhook for server-side dynamic content rendering (DCO)",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Webhook URL to call for dynamic content"
+                        },
+                        "method": {
+                          "title": "HTTP Method",
+                          "description": "HTTP method",
+                          "type": "string",
+                          "enum": [
+                            "GET",
+                            "POST"
+                          ],
+                          "default": "POST"
+                        },
+                        "timeout_ms": {
+                          "type": "integer",
+                          "minimum": 10,
+                          "maximum": 5000,
+                          "default": 500,
+                          "description": "Maximum time to wait for response in milliseconds"
+                        },
+                        "supported_macros": {
+                          "type": "array",
+                          "items": {
+                            "oneOf": [
+                              {
+                                "title": "Universal Macro",
+                                "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                "type": "string",
+                                "enum": [
+                                  "MEDIA_BUY_ID",
+                                  "PACKAGE_ID",
+                                  "CREATIVE_ID",
+                                  "CACHEBUSTER",
+                                  "TIMESTAMP",
+                                  "CLICK_URL",
+                                  "GDPR",
+                                  "GDPR_CONSENT",
+                                  "US_PRIVACY",
+                                  "GPP_STRING",
+                                  "GPP_SID",
+                                  "IP_ADDRESS",
+                                  "LIMIT_AD_TRACKING",
+                                  "DEVICE_TYPE",
+                                  "OS",
+                                  "OS_VERSION",
+                                  "DEVICE_MAKE",
+                                  "DEVICE_MODEL",
+                                  "USER_AGENT",
+                                  "APP_BUNDLE",
+                                  "APP_NAME",
+                                  "COUNTRY",
+                                  "REGION",
+                                  "CITY",
+                                  "ZIP",
+                                  "DMA",
+                                  "LAT",
+                                  "LONG",
+                                  "DEVICE_ID",
+                                  "DEVICE_ID_TYPE",
+                                  "DOMAIN",
+                                  "PAGE_URL",
+                                  "REFERRER",
+                                  "KEYWORDS",
+                                  "PLACEMENT_ID",
+                                  "FOLD_POSITION",
+                                  "AD_WIDTH",
+                                  "AD_HEIGHT",
+                                  "VIDEO_ID",
+                                  "VIDEO_TITLE",
+                                  "VIDEO_DURATION",
+                                  "VIDEO_CATEGORY",
+                                  "CONTENT_GENRE",
+                                  "CONTENT_RATING",
+                                  "PLAYER_WIDTH",
+                                  "PLAYER_HEIGHT",
+                                  "POD_POSITION",
+                                  "POD_SIZE",
+                                  "AD_BREAK_ID",
+                                  "STATION_ID",
+                                  "COLLECTION_NAME",
+                                  "INSTALLMENT_ID",
+                                  "AUDIO_DURATION",
+                                  "TMPX",
+                                  "AXEM",
+                                  "CATALOG_ID",
+                                  "SKU",
+                                  "GTIN",
+                                  "OFFERING_ID",
+                                  "JOB_ID",
+                                  "HOTEL_ID",
+                                  "FLIGHT_ID",
+                                  "VEHICLE_ID",
+                                  "LISTING_ID",
+                                  "STORE_ID",
+                                  "PROGRAM_ID",
+                                  "DESTINATION_ID",
+                                  "CREATIVE_VARIANT_ID",
+                                  "APP_ITEM_ID"
+                                ],
+                                "enumDescriptions": {
+                                  "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                  "PACKAGE_ID": "AdCP package identifier",
+                                  "CREATIVE_ID": "AdCP creative identifier",
+                                  "CACHEBUSTER": "Random number to prevent caching",
+                                  "TIMESTAMP": "Unix timestamp in milliseconds",
+                                  "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                  "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                  "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                  "US_PRIVACY": "US Privacy (CCPA) string",
+                                  "GPP_STRING": "Global Privacy Platform consent string",
+                                  "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                  "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                  "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                  "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                  "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                  "OS_VERSION": "OS version number",
+                                  "DEVICE_MAKE": "Device manufacturer",
+                                  "DEVICE_MODEL": "Device model identifier",
+                                  "USER_AGENT": "Full user agent string",
+                                  "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                  "APP_NAME": "Human-readable app name",
+                                  "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                  "REGION": "State/province/region code",
+                                  "CITY": "City name",
+                                  "ZIP": "Postal code",
+                                  "DMA": "Nielsen DMA code (US TV markets)",
+                                  "LAT": "Latitude coordinate",
+                                  "LONG": "Longitude coordinate",
+                                  "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                  "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                  "DOMAIN": "Domain where ad is shown",
+                                  "PAGE_URL": "Full page URL (encoded)",
+                                  "REFERRER": "HTTP referrer URL",
+                                  "KEYWORDS": "Page keywords (comma-separated)",
+                                  "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                  "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                  "AD_WIDTH": "Ad slot width in pixels",
+                                  "AD_HEIGHT": "Ad slot height in pixels",
+                                  "VIDEO_ID": "Content video identifier",
+                                  "VIDEO_TITLE": "Content video title",
+                                  "VIDEO_DURATION": "Content duration in seconds",
+                                  "VIDEO_CATEGORY": "IAB content category",
+                                  "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                  "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                  "PLAYER_WIDTH": "Video player width in pixels",
+                                  "PLAYER_HEIGHT": "Video player height in pixels",
+                                  "POD_POSITION": "Position within ad break",
+                                  "POD_SIZE": "Total ads in the ad break",
+                                  "AD_BREAK_ID": "Unique ad break identifier",
+                                  "STATION_ID": "Radio station or podcast identifier",
+                                  "COLLECTION_NAME": "Program or collection name",
+                                  "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                  "AUDIO_DURATION": "Audio content duration in seconds",
+                                  "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                  "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                  "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                  "SKU": "Product SKU identifier for the catalog item being rendered",
+                                  "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                  "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                  "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                  "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                  "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                  "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                  "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                  "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                  "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                  "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                  "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                  "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                }
+                              },
+                              {
+                                "type": "string",
+                                "description": "Custom or publisher-specific macro name"
+                              }
+                            ]
+                          },
+                          "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                        },
+                        "required_macros": {
+                          "type": "array",
+                          "items": {
+                            "oneOf": [
+                              {
+                                "title": "Universal Macro",
+                                "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                "type": "string",
+                                "enum": [
+                                  "MEDIA_BUY_ID",
+                                  "PACKAGE_ID",
+                                  "CREATIVE_ID",
+                                  "CACHEBUSTER",
+                                  "TIMESTAMP",
+                                  "CLICK_URL",
+                                  "GDPR",
+                                  "GDPR_CONSENT",
+                                  "US_PRIVACY",
+                                  "GPP_STRING",
+                                  "GPP_SID",
+                                  "IP_ADDRESS",
+                                  "LIMIT_AD_TRACKING",
+                                  "DEVICE_TYPE",
+                                  "OS",
+                                  "OS_VERSION",
+                                  "DEVICE_MAKE",
+                                  "DEVICE_MODEL",
+                                  "USER_AGENT",
+                                  "APP_BUNDLE",
+                                  "APP_NAME",
+                                  "COUNTRY",
+                                  "REGION",
+                                  "CITY",
+                                  "ZIP",
+                                  "DMA",
+                                  "LAT",
+                                  "LONG",
+                                  "DEVICE_ID",
+                                  "DEVICE_ID_TYPE",
+                                  "DOMAIN",
+                                  "PAGE_URL",
+                                  "REFERRER",
+                                  "KEYWORDS",
+                                  "PLACEMENT_ID",
+                                  "FOLD_POSITION",
+                                  "AD_WIDTH",
+                                  "AD_HEIGHT",
+                                  "VIDEO_ID",
+                                  "VIDEO_TITLE",
+                                  "VIDEO_DURATION",
+                                  "VIDEO_CATEGORY",
+                                  "CONTENT_GENRE",
+                                  "CONTENT_RATING",
+                                  "PLAYER_WIDTH",
+                                  "PLAYER_HEIGHT",
+                                  "POD_POSITION",
+                                  "POD_SIZE",
+                                  "AD_BREAK_ID",
+                                  "STATION_ID",
+                                  "COLLECTION_NAME",
+                                  "INSTALLMENT_ID",
+                                  "AUDIO_DURATION",
+                                  "TMPX",
+                                  "AXEM",
+                                  "CATALOG_ID",
+                                  "SKU",
+                                  "GTIN",
+                                  "OFFERING_ID",
+                                  "JOB_ID",
+                                  "HOTEL_ID",
+                                  "FLIGHT_ID",
+                                  "VEHICLE_ID",
+                                  "LISTING_ID",
+                                  "STORE_ID",
+                                  "PROGRAM_ID",
+                                  "DESTINATION_ID",
+                                  "CREATIVE_VARIANT_ID",
+                                  "APP_ITEM_ID"
+                                ],
+                                "enumDescriptions": {
+                                  "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                  "PACKAGE_ID": "AdCP package identifier",
+                                  "CREATIVE_ID": "AdCP creative identifier",
+                                  "CACHEBUSTER": "Random number to prevent caching",
+                                  "TIMESTAMP": "Unix timestamp in milliseconds",
+                                  "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                  "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                  "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                  "US_PRIVACY": "US Privacy (CCPA) string",
+                                  "GPP_STRING": "Global Privacy Platform consent string",
+                                  "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                  "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                  "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                  "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                  "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                  "OS_VERSION": "OS version number",
+                                  "DEVICE_MAKE": "Device manufacturer",
+                                  "DEVICE_MODEL": "Device model identifier",
+                                  "USER_AGENT": "Full user agent string",
+                                  "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                  "APP_NAME": "Human-readable app name",
+                                  "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                  "REGION": "State/province/region code",
+                                  "CITY": "City name",
+                                  "ZIP": "Postal code",
+                                  "DMA": "Nielsen DMA code (US TV markets)",
+                                  "LAT": "Latitude coordinate",
+                                  "LONG": "Longitude coordinate",
+                                  "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                  "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                  "DOMAIN": "Domain where ad is shown",
+                                  "PAGE_URL": "Full page URL (encoded)",
+                                  "REFERRER": "HTTP referrer URL",
+                                  "KEYWORDS": "Page keywords (comma-separated)",
+                                  "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                  "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                  "AD_WIDTH": "Ad slot width in pixels",
+                                  "AD_HEIGHT": "Ad slot height in pixels",
+                                  "VIDEO_ID": "Content video identifier",
+                                  "VIDEO_TITLE": "Content video title",
+                                  "VIDEO_DURATION": "Content duration in seconds",
+                                  "VIDEO_CATEGORY": "IAB content category",
+                                  "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                  "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                  "PLAYER_WIDTH": "Video player width in pixels",
+                                  "PLAYER_HEIGHT": "Video player height in pixels",
+                                  "POD_POSITION": "Position within ad break",
+                                  "POD_SIZE": "Total ads in the ad break",
+                                  "AD_BREAK_ID": "Unique ad break identifier",
+                                  "STATION_ID": "Radio station or podcast identifier",
+                                  "COLLECTION_NAME": "Program or collection name",
+                                  "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                  "AUDIO_DURATION": "Audio content duration in seconds",
+                                  "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                  "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                  "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                  "SKU": "Product SKU identifier for the catalog item being rendered",
+                                  "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                  "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                  "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                  "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                  "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                  "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                  "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                  "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                  "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                  "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                  "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                  "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                }
+                              },
+                              {
+                                "type": "string",
+                                "description": "Custom or publisher-specific macro name"
+                              }
+                            ]
+                          },
+                          "description": "Universal macros that must be provided for webhook to function"
+                        },
+                        "response_type": {
+                          "title": "Webhook Response Type",
+                          "description": "Expected content type of webhook response",
+                          "type": "string",
+                          "enum": [
+                            "html",
+                            "json",
+                            "xml",
+                            "javascript"
+                          ]
+                        },
+                        "security": {
+                          "type": "object",
+                          "description": "Security configuration for webhook calls",
+                          "properties": {
+                            "method": {
+                              "title": "Webhook Security Method",
+                              "description": "Authentication method",
+                              "type": "string",
+                              "enum": [
+                                "hmac_sha256",
+                                "api_key",
+                                "none"
+                              ]
+                            },
+                            "hmac_header": {
+                              "type": "string",
+                              "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                            },
+                            "api_key_header": {
+                              "type": "string",
+                              "description": "Header name for API key (e.g., 'X-API-Key')"
+                            }
+                          },
+                          "required": [
+                            "method"
+                          ]
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "response_type",
+                        "security"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "CSS Asset",
+                      "description": "CSS stylesheet asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "CSS content"
+                        },
+                        "media": {
+                          "type": "string",
+                          "description": "CSS media query context (e.g., 'screen', 'print')"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "DAAST Asset",
+                      "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "url",
+                              "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL endpoint that returns DAAST XML"
+                            },
+                            "daast_version": {
+                              "title": "DAAST Version",
+                              "description": "DAAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "1.0",
+                                "1.1"
+                              ]
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected audio duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "DAAST Tracking Event",
+                                "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "skip",
+                                  "progress",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this DAAST tag"
+                            },
+                            "companion_ads": {
+                              "type": "boolean",
+                              "description": "Whether companion display ads are included"
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the audio content",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "inline",
+                              "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Inline DAAST XML content"
+                            },
+                            "daast_version": {
+                              "title": "DAAST Version",
+                              "description": "DAAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "1.0",
+                                "1.1"
+                              ]
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected audio duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "DAAST Tracking Event",
+                                "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "skip",
+                                  "progress",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this DAAST tag"
+                            },
+                            "companion_ads": {
+                              "type": "boolean",
+                              "description": "Whether companion display ads are included"
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the audio content",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    {
+                      "title": "Markdown Asset",
+                      "description": "Markdown-formatted text content following CommonMark specification",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                        },
+                        "language": {
+                          "type": "string",
+                          "description": "Language code (e.g., 'en', 'es', 'fr')"
+                        },
+                        "markdown_flavor": {
+                          "title": "Markdown Flavor",
+                          "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                          "type": "string",
+                          "enum": [
+                            "commonmark",
+                            "gfm"
+                          ],
+                          "default": "commonmark"
+                        },
+                        "allow_raw_html": {
+                          "type": "boolean",
+                          "default": false,
+                          "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Brief Asset",
+                      "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                      "allOf": [
+                        {
+                          "title": "Creative Brief",
+                          "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                          "type": "object",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Campaign or flight name for identification"
+                            },
+                            "objective": {
+                              "type": "string",
+                              "enum": [
+                                "awareness",
+                                "consideration",
+                                "conversion",
+                                "retention",
+                                "engagement"
+                              ],
+                              "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                            },
+                            "tone": {
+                              "type": "string",
+                              "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                            },
+                            "audience": {
+                              "type": "string",
+                              "description": "Target audience description for this campaign"
+                            },
+                            "territory": {
+                              "type": "string",
+                              "description": "Creative territory or positioning the campaign should occupy"
+                            },
+                            "messaging": {
+                              "type": "object",
+                              "description": "Messaging framework for the campaign",
+                              "properties": {
+                                "headline": {
+                                  "type": "string",
+                                  "description": "Primary headline"
+                                },
+                                "tagline": {
+                                  "type": "string",
+                                  "description": "Supporting tagline or sub-headline"
+                                },
+                                "cta": {
+                                  "type": "string",
+                                  "description": "Call-to-action text"
+                                },
+                                "key_messages": {
+                                  "type": "array",
+                                  "description": "Key messages to communicate in priority order",
+                                  "items": {
+                                    "type": "string"
+                                  }
+                                }
+                              },
+                              "additionalProperties": true
+                            },
+                            "reference_assets": {
+                              "type": "array",
+                              "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                              "items": {
+                                "title": "Reference Asset",
+                                "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                "type": "object",
+                                "properties": {
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the reference asset (image, video, or document)"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "style_reference",
+                                      "product_shot",
+                                      "mood_board",
+                                      "example_creative",
+                                      "logo",
+                                      "strategy_doc",
+                                      "storyboard"
+                                    ],
+                                    "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                  },
+                                  "description": {
+                                    "type": "string",
+                                    "description": "Human-readable description of the asset and how it should inform creative generation"
+                                  }
+                                },
+                                "required": [
+                                  "url",
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "compliance": {
+                              "type": "object",
+                              "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                              "properties": {
+                                "required_disclosures": {
+                                  "type": "array",
+                                  "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "text": {
+                                        "type": "string",
+                                        "description": "The disclosure text that must appear in the creative"
+                                      },
+                                      "position": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                        "items": {
+                                          "type": "string",
+                                          "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                        },
+                                        "minItems": 1
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                      },
+                                      "language": {
+                                        "type": "string",
+                                        "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                      },
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "text"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                },
+                                "prohibited_claims": {
+                                  "type": "array",
+                                  "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    {
+                      "title": "Catalog Asset",
+                      "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                      "allOf": [
+                        {
+                          "title": "Catalog",
+                          "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                          "type": "object",
+                          "properties": {
+                            "catalog_id": {
+                              "type": "string",
+                              "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                            },
+                            "name": {
+                              "type": "string",
+                              "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                            },
+                            "type": {
+                              "title": "Catalog Type",
+                              "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                              "type": "string",
+                              "enum": [
+                                "offering",
+                                "product",
+                                "inventory",
+                                "store",
+                                "promotion",
+                                "hotel",
+                                "flight",
+                                "job",
+                                "vehicle",
+                                "real_estate",
+                                "education",
+                                "destination",
+                                "app"
+                              ]
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                            },
+                            "feed_format": {
+                              "title": "Feed Format",
+                              "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                              "type": "string",
+                              "enum": [
+                                "google_merchant_center",
+                                "facebook_catalog",
+                                "shopify",
+                                "linkedin_jobs",
+                                "custom"
+                              ]
+                            },
+                            "update_frequency": {
+                              "title": "Update Frequency",
+                              "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                              "type": "string",
+                              "enum": [
+                                "realtime",
+                                "hourly",
+                                "daily",
+                                "weekly"
+                              ]
+                            },
+                            "items": {
+                              "type": "array",
+                              "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                              "items": {
+                                "type": "object"
+                              },
+                              "minItems": 1
+                            },
+                            "ids": {
+                              "type": "array",
+                              "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                              "items": {
+                                "type": "string"
+                              },
+                              "minItems": 1
+                            },
+                            "gtins": {
+                              "type": "array",
+                              "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                              "items": {
+                                "type": "string",
+                                "pattern": "^[0-9]{8,14}$"
+                              },
+                              "minItems": 1
+                            },
+                            "tags": {
+                              "type": "array",
+                              "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                              "items": {
+                                "type": "string"
+                              },
+                              "minItems": 1
+                            },
+                            "category": {
+                              "type": "string",
+                              "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                            },
+                            "query": {
+                              "type": "string",
+                              "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                            },
+                            "conversion_events": {
+                              "type": "array",
+                              "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                              "items": {
+                                "title": "Event Type",
+                                "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                "type": "string",
+                                "enum": [
+                                  "page_view",
+                                  "view_content",
+                                  "select_content",
+                                  "select_item",
+                                  "search",
+                                  "share",
+                                  "add_to_cart",
+                                  "remove_from_cart",
+                                  "viewed_cart",
+                                  "add_to_wishlist",
+                                  "initiate_checkout",
+                                  "add_payment_info",
+                                  "purchase",
+                                  "refund",
+                                  "lead",
+                                  "qualify_lead",
+                                  "close_convert_lead",
+                                  "disqualify_lead",
+                                  "complete_registration",
+                                  "subscribe",
+                                  "start_trial",
+                                  "app_install",
+                                  "app_launch",
+                                  "contact",
+                                  "schedule",
+                                  "donate",
+                                  "submit_application",
+                                  "custom"
+                                ],
+                                "enumDescriptions": {
+                                  "page_view": "User viewed a page",
+                                  "view_content": "User viewed specific content (product, article, etc.)",
+                                  "select_content": "User selected or clicked on content (article, video, etc.)",
+                                  "select_item": "User selected a specific product or item from a list",
+                                  "search": "User performed a search",
+                                  "share": "User shared content via social or messaging",
+                                  "add_to_cart": "User added an item to cart",
+                                  "remove_from_cart": "User removed an item from cart",
+                                  "viewed_cart": "User viewed their shopping cart",
+                                  "add_to_wishlist": "User added an item to a wishlist",
+                                  "initiate_checkout": "User started checkout process",
+                                  "add_payment_info": "User added payment information",
+                                  "purchase": "User completed a purchase",
+                                  "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                  "lead": "User expressed interest (form submission, signup, etc.)",
+                                  "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                  "close_convert_lead": "Lead converted to a customer or closed deal",
+                                  "disqualify_lead": "Lead disqualified or marked as not viable",
+                                  "complete_registration": "User completed account registration",
+                                  "subscribe": "User subscribed to a service or newsletter",
+                                  "start_trial": "User started a free trial",
+                                  "app_install": "User installed an application",
+                                  "app_launch": "User launched an application",
+                                  "contact": "User initiated contact (call, message, etc.)",
+                                  "schedule": "User scheduled an appointment or event",
+                                  "donate": "User made a donation",
+                                  "submit_application": "User submitted an application (loan, job, etc.)",
+                                  "custom": "Custom event type (specify in custom_event_name)"
+                                }
+                              },
+                              "minItems": 1,
+                              "uniqueItems": true
+                            },
+                            "content_id_type": {
+                              "title": "Content ID Type",
+                              "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                              "type": "string",
+                              "enum": [
+                                "sku",
+                                "gtin",
+                                "offering_id",
+                                "job_id",
+                                "hotel_id",
+                                "flight_id",
+                                "vehicle_id",
+                                "listing_id",
+                                "store_id",
+                                "program_id",
+                                "destination_id",
+                                "app_id"
+                              ]
+                            },
+                            "feed_field_mappings": {
+                              "type": "array",
+                              "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                              "items": {
+                                "title": "Catalog Field Mapping",
+                                "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                "type": "object",
+                                "properties": {
+                                  "feed_field": {
+                                    "type": "string",
+                                    "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                  },
+                                  "catalog_field": {
+                                    "type": "string",
+                                    "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                  },
+                                  "asset_group_id": {
+                                    "type": "string",
+                                    "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                  },
+                                  "value": {
+                                    "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                  },
+                                  "transform": {
+                                    "type": "string",
+                                    "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                    "enum": [
+                                      "date",
+                                      "divide",
+                                      "boolean",
+                                      "split"
+                                    ]
+                                  },
+                                  "format": {
+                                    "type": "string",
+                                    "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                  },
+                                  "timezone": {
+                                    "type": "string",
+                                    "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                  },
+                                  "by": {
+                                    "type": "number",
+                                    "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                    "exclusiveMinimum": 0
+                                  },
+                                  "separator": {
+                                    "type": "string",
+                                    "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                    "default": ","
+                                  },
+                                  "default": {
+                                    "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "allOf": [
+                                  {
+                                    "not": {
+                                      "required": [
+                                        "feed_field",
+                                        "value"
+                                      ]
+                                    }
+                                  },
+                                  {
+                                    "not": {
+                                      "required": [
+                                        "catalog_field",
+                                        "asset_group_id"
+                                      ]
+                                    }
+                                  }
+                                ],
+                                "additionalProperties": true,
+                                "examples": [
+                                  {
+                                    "description": "Simple field rename",
+                                    "data": {
+                                      "feed_field": "hotel_name",
+                                      "catalog_field": "name"
+                                    }
+                                  },
+                                  {
+                                    "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                    "data": {
+                                      "feed_field": "available_from",
+                                      "catalog_field": "valid_from",
+                                      "transform": "date",
+                                      "format": "YYYYMMDD",
+                                      "timezone": "UTC"
+                                    }
+                                  },
+                                  {
+                                    "description": "Divide cents to dollars",
+                                    "data": {
+                                      "feed_field": "price_cents",
+                                      "catalog_field": "price.amount",
+                                      "transform": "divide",
+                                      "by": 100
+                                    }
+                                  },
+                                  {
+                                    "description": "Static literal injection \u2014 currency not in feed",
+                                    "data": {
+                                      "catalog_field": "price.currency",
+                                      "value": "USD"
+                                    }
+                                  },
+                                  {
+                                    "description": "Image URL assigned to typed asset pool",
+                                    "data": {
+                                      "feed_field": "primary_photo_url",
+                                      "asset_group_id": "images_landscape"
+                                    }
+                                  },
+                                  {
+                                    "description": "Vertical photo URL assigned to vertical pool",
+                                    "data": {
+                                      "feed_field": "portrait_photo_url",
+                                      "asset_group_id": "images_vertical"
+                                    }
+                                  },
+                                  {
+                                    "description": "Split comma-separated tags to array",
+                                    "data": {
+                                      "feed_field": "amenity_list",
+                                      "catalog_field": "amenities",
+                                      "transform": "split",
+                                      "separator": ","
+                                    }
+                                  },
+                                  {
+                                    "description": "Boolean coercion with default",
+                                    "data": {
+                                      "feed_field": "is_available",
+                                      "catalog_field": "available",
+                                      "transform": "boolean",
+                                      "default": false
+                                    }
+                                  }
+                                ]
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "type"
+                          ],
+                          "additionalProperties": true,
+                          "examples": [
+                            {
+                              "description": "Synced product catalog from Google Merchant Center",
+                              "data": {
+                                "catalog_id": "gmc-primary",
+                                "name": "Primary Product Feed",
+                                "type": "product",
+                                "url": "https://feeds.acmecorp.com/products.xml",
+                                "feed_format": "google_merchant_center",
+                                "update_frequency": "daily"
+                              }
+                            },
+                            {
+                              "description": "Inventory feed for store-level stock data",
+                              "data": {
+                                "catalog_id": "store-inventory",
+                                "name": "Store Inventory",
+                                "type": "inventory",
+                                "url": "https://feeds.acmecorp.com/inventory.json",
+                                "feed_format": "custom",
+                                "update_frequency": "hourly"
+                              }
+                            },
+                            {
+                              "description": "Store locator feed",
+                              "data": {
+                                "catalog_id": "retail-locations",
+                                "name": "Retail Locations",
+                                "type": "store",
+                                "url": "https://feeds.acmecorp.com/stores.json",
+                                "feed_format": "custom",
+                                "update_frequency": "weekly"
+                              }
+                            },
+                            {
+                              "description": "Promotional pricing feed",
+                              "data": {
+                                "catalog_id": "summer-sale",
+                                "name": "Summer Sale Promotions",
+                                "type": "promotion",
+                                "url": "https://feeds.acmecorp.com/promotions.json",
+                                "feed_format": "google_merchant_center",
+                                "update_frequency": "daily"
+                              }
+                            },
+                            {
+                              "description": "Inline offering catalog (no sync needed)",
+                              "data": {
+                                "type": "offering",
+                                "items": [
+                                  {
+                                    "offering_id": "summer-sale",
+                                    "name": "Summer Sale",
+                                    "landing_url": "https://acme.com/summer"
+                                  }
+                                ]
+                              }
+                            },
+                            {
+                              "description": "Reference to a previously synced catalog by ID",
+                              "data": {
+                                "catalog_id": "gmc-primary",
+                                "type": "product",
+                                "ids": [
+                                  "SKU-12345",
+                                  "SKU-67890"
+                                ]
+                              }
+                            },
+                            {
+                              "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                              "data": {
+                                "type": "product",
+                                "gtins": [
+                                  "00013000006040",
+                                  "00013000006057"
+                                ],
+                                "content_id_type": "gtin",
+                                "conversion_events": [
+                                  "purchase",
+                                  "add_to_cart"
+                                ]
+                              }
+                            },
+                            {
+                              "description": "Inline store catalog with catchment areas",
+                              "data": {
+                                "catalog_id": "retail-locations",
+                                "name": "Retail Locations",
+                                "type": "store",
+                                "items": [
+                                  {
+                                    "store_id": "amsterdam-flagship",
+                                    "name": "Amsterdam Flagship",
+                                    "location": {
+                                      "lat": 52.3676,
+                                      "lng": 4.9041
+                                    },
+                                    "catchments": [
+                                      {
+                                        "catchment_id": "walk",
+                                        "travel_time": {
+                                          "value": 10,
+                                          "unit": "min"
+                                        },
+                                        "transport_mode": "walking"
+                                      },
+                                      {
+                                        "catchment_id": "drive",
+                                        "travel_time": {
+                                          "value": 15,
+                                          "unit": "min"
+                                        },
+                                        "transport_mode": "driving"
+                                      }
+                                    ]
+                                  }
+                                ]
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  ]
+                }
+              },
+              "additionalProperties": true
+            },
+            "rights": {
+              "type": "array",
+              "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+              "items": {
+                "title": "Rights Constraint",
+                "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                "type": "object",
+                "properties": {
+                  "rights_id": {
+                    "type": "string",
+                    "description": "Rights grant identifier from the acquire_rights response"
+                  },
+                  "rights_agent": {
+                    "type": "object",
+                    "description": "The agent that granted these rights",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "MCP endpoint URL of the rights agent"
+                      },
+                      "id": {
+                        "type": "string",
+                        "description": "Agent identifier"
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "id"
+                    ]
+                  },
+                  "valid_from": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Start of the rights validity period"
+                  },
+                  "valid_until": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "End of the rights validity period. Creative should not be served after this time."
+                  },
+                  "uses": {
+                    "type": "array",
+                    "description": "Rights uses covered by this constraint",
+                    "items": {
+                      "title": "Right Use",
+                      "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                      "type": "string",
+                      "enum": [
+                        "likeness",
+                        "voice",
+                        "name",
+                        "endorsement",
+                        "motion_capture",
+                        "signature",
+                        "catchphrase",
+                        "sync",
+                        "background_music",
+                        "editorial",
+                        "commercial"
+                      ],
+                      "enumDescriptions": {
+                        "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                        "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                        "name": "Use of a person's name in advertising or promotional materials",
+                        "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                        "motion_capture": "Use of a person's movement patterns for animation or video",
+                        "signature": "Use of a person's signature or autograph",
+                        "catchphrase": "Use of a person's well-known phrases or sayings",
+                        "sync": "Synchronization of music with visual media (ads, video)",
+                        "background_music": "Use of music as background audio in advertising",
+                        "editorial": "Use in editorial or informational contexts",
+                        "commercial": "Use in commercial advertising and promotional contexts"
+                      }
+                    },
+                    "minItems": 1
+                  },
+                  "countries": {
+                    "type": "array",
+                    "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    }
+                  },
+                  "excluded_countries": {
+                    "type": "array",
+                    "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    }
+                  },
+                  "impression_cap": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+                  },
+                  "right_type": {
+                    "title": "Right Type",
+                    "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                    "type": "string",
+                    "enum": [
+                      "talent",
+                      "character",
+                      "brand_ip",
+                      "music",
+                      "stock_media"
+                    ],
+                    "enumDescriptions": {
+                      "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                      "character": "Rights to fictional characters for advertising or co-branding",
+                      "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                      "music": "Rights to musical compositions or recordings (sync, background music)",
+                      "stock_media": "Rights to stock photography, video, or audio collections"
+                    }
+                  },
+                  "approval_status": {
+                    "type": "string",
+                    "enum": [
+                      "pending",
+                      "approved",
+                      "rejected"
+                    ],
+                    "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+                  },
+                  "verification_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "rights_id",
+                  "rights_agent",
+                  "uses"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "industry_identifiers": {
+              "type": "array",
+              "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+              "items": {
+                "title": "Industry Identifier",
+                "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "title": "Creative Identifier Type",
+                    "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                    "type": "string",
+                    "enum": [
+                      "ad_id",
+                      "isci",
+                      "clearcast_clock"
+                    ],
+                    "enumDescriptions": {
+                      "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                      "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                      "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                    },
+                    "examples": [
+                      "ad_id",
+                      "isci",
+                      "clearcast_clock"
+                    ]
+                  },
+                  "value": {
+                    "type": "string",
+                    "maxLength": 64,
+                    "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ],
+                "additionalProperties": true
+              },
+              "uniqueItems": true
+            },
+            "provenance": {
+              "title": "Provenance",
+              "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+              "type": "object",
+              "properties": {
+                "digital_source_type": {
+                  "title": "Digital Source Type",
+                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                  "type": "string",
+                  "enum": [
+                    "digital_capture",
+                    "digital_creation",
+                    "trained_algorithmic_media",
+                    "composite_with_trained_algorithmic_media",
+                    "algorithmic_media",
+                    "composite_capture",
+                    "composite_synthetic",
+                    "human_edits",
+                    "data_driven_media"
+                  ],
+                  "enumDescriptions": {
+                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                    "composite_capture": "Multiple digital captures composited together without AI",
+                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                  }
+                },
+                "ai_tool": {
+                  "type": "object",
+                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                  "properties": {
+                    "name": {
+                      "type": "string",
+                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                    },
+                    "version": {
+                      "type": "string",
+                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                    },
+                    "provider": {
+                      "type": "string",
+                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                    }
+                  },
+                  "required": [
+                    "name"
+                  ],
+                  "additionalProperties": true
+                },
+                "human_oversight": {
+                  "type": "string",
+                  "description": "Level of human involvement in the AI-assisted creation process",
+                  "enum": [
+                    "none",
+                    "prompt_only",
+                    "selected",
+                    "edited",
+                    "directed"
+                  ],
+                  "enumDescriptions": {
+                    "none": "Fully automated with no human involvement in generation",
+                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                    "selected": "Human selected from multiple AI-generated candidates",
+                    "edited": "Human edited or refined AI-generated output",
+                    "directed": "Human directed the creative process with AI as an assistive tool"
+                  }
+                },
+                "declared_by": {
+                  "type": "object",
+                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent or service that declared this provenance"
+                    },
+                    "role": {
+                      "type": "string",
+                      "enum": [
+                        "creator",
+                        "advertiser",
+                        "agency",
+                        "platform",
+                        "tool"
+                      ],
+                      "description": "Role of the declaring party in the supply chain",
+                      "enumDescriptions": {
+                        "creator": "The party that created or generated the content",
+                        "advertiser": "The brand or advertiser that owns the content",
+                        "agency": "Agency acting on behalf of the advertiser",
+                        "platform": "Ad platform or publisher that processed the content",
+                        "tool": "Automated tool or service that attached provenance metadata"
+                      }
+                    }
+                  },
+                  "required": [
+                    "role"
+                  ],
+                  "additionalProperties": true
+                },
+                "declared_at": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                },
+                "created_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this content was created or generated (ISO 8601)"
+                },
+                "c2pa": {
+                  "type": "object",
+                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                  "properties": {
+                    "manifest_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the C2PA manifest store for this content"
+                    }
+                  },
+                  "required": [
+                    "manifest_url"
+                  ],
+                  "additionalProperties": true
+                },
+                "disclosure": {
+                  "type": "object",
+                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                  "properties": {
+                    "required": {
+                      "type": "boolean",
+                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                    },
+                    "jurisdictions": {
+                      "type": "array",
+                      "description": "Jurisdictions where disclosure obligations apply",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "country": {
+                            "type": "string",
+                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                          },
+                          "region": {
+                            "type": "string",
+                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                          },
+                          "regulation": {
+                            "type": "string",
+                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                          },
+                          "label_text": {
+                            "type": "string",
+                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                          },
+                          "render_guidance": {
+                            "type": "object",
+                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                            "minProperties": 1,
+                            "properties": {
+                              "persistence": {
+                                "title": "Disclosure Persistence",
+                                "description": "How long the disclosure must persist during content playback or display",
+                                "type": "string",
+                                "enum": [
+                                  "continuous",
+                                  "initial",
+                                  "flexible"
+                                ],
+                                "enumDescriptions": {
+                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                }
+                              },
+                              "min_duration_ms": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                              },
+                              "positions": {
+                                "type": "array",
+                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                "items": {
+                                  "title": "Disclosure Position",
+                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                  "type": "string",
+                                  "enum": [
+                                    "prominent",
+                                    "footer",
+                                    "audio",
+                                    "subtitle",
+                                    "overlay",
+                                    "end_card",
+                                    "pre_roll",
+                                    "companion"
+                                  ]
+                                },
+                                "minItems": 1,
+                                "uniqueItems": true
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "country",
+                          "regulation"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "required"
+                  ],
+                  "additionalProperties": true
+                },
+                "verification": {
+                  "type": "array",
+                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                  "minItems": 1,
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "verified_by": {
+                        "type": "string",
+                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                      },
+                      "verified_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When the verification was performed (ISO 8601)"
+                      },
+                      "result": {
+                        "type": "string",
+                        "enum": [
+                          "authentic",
+                          "ai_generated",
+                          "ai_modified",
+                          "inconclusive"
+                        ],
+                        "description": "Verification outcome"
+                      },
+                      "confidence": {
+                        "type": "number",
+                        "minimum": 0,
+                        "maximum": 1,
+                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                      },
+                      "details_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the full verification report"
+                      }
+                    },
+                    "required": [
+                      "verified_by",
+                      "result"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "additionalProperties": true
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "format_id",
+            "assets"
+          ],
+          "additionalProperties": true
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when preview links expire"
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "response_type",
+        "variant_id",
+        "previews"
+      ],
+      "additionalProperties": true
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.299Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/sync-creatives-request.json b/schemas/cache/bundled/creative/sync-creatives-request.json
new file mode 100644
index 000000000..2aff17355
--- /dev/null
+++ b/schemas/cache/bundled/creative/sync-creatives-request.json
@@ -0,0 +1,6472 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Creatives Request",
+  "description": "Request parameters for syncing creative assets with upsert semantics - supports bulk operations, scoped updates, and assignment management",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account that owns these creatives.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "creatives": {
+      "type": "array",
+      "description": "Array of creative assets to sync (create or update)",
+      "items": {
+        "title": "Creative Asset",
+        "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party snippets",
+        "type": "object",
+        "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "Unique identifier for the creative"
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable creative name"
+          },
+          "format_id": {
+            "title": "Format ID",
+            "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "assets": {
+            "type": "object",
+            "description": "Assets required by the format, keyed by asset_id",
+            "patternProperties": {
+              "^[a-z0-9_]+$": {
+                "anyOf": [
+                  {
+                    "title": "Image Asset",
+                    "description": "Image asset with URL and dimensions",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the image asset"
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels"
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels"
+                      },
+                      "format": {
+                        "type": "string",
+                        "description": "Image file format (jpg, png, gif, webp, etc.)"
+                      },
+                      "alt_text": {
+                        "type": "string",
+                        "description": "Alternative text for accessibility",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "width",
+                      "height"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Video Asset",
+                    "description": "Video asset with URL and technical specifications including audio track properties",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the video asset"
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels"
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels"
+                      },
+                      "duration_ms": {
+                        "type": "integer",
+                        "description": "Video duration in milliseconds",
+                        "minimum": 1
+                      },
+                      "file_size_bytes": {
+                        "type": "integer",
+                        "description": "File size in bytes",
+                        "minimum": 1
+                      },
+                      "container_format": {
+                        "type": "string",
+                        "description": "Video container format (mp4, webm, mov, etc.)"
+                      },
+                      "video_codec": {
+                        "type": "string",
+                        "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                      },
+                      "video_bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Video stream bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "frame_rate": {
+                        "type": "string",
+                        "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                      },
+                      "frame_rate_type": {
+                        "type": "string",
+                        "enum": [
+                          "constant",
+                          "variable"
+                        ],
+                        "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                      },
+                      "scan_type": {
+                        "type": "string",
+                        "enum": [
+                          "progressive",
+                          "interlaced"
+                        ],
+                        "description": "Scan type of the video"
+                      },
+                      "color_space": {
+                        "type": "string",
+                        "enum": [
+                          "rec709",
+                          "rec2020",
+                          "rec2100",
+                          "srgb",
+                          "dci_p3"
+                        ],
+                        "description": "Color space of the video"
+                      },
+                      "hdr_format": {
+                        "type": "string",
+                        "enum": [
+                          "sdr",
+                          "hdr10",
+                          "hdr10_plus",
+                          "hlg",
+                          "dolby_vision"
+                        ],
+                        "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                      },
+                      "chroma_subsampling": {
+                        "type": "string",
+                        "enum": [
+                          "4:2:0",
+                          "4:2:2",
+                          "4:4:4"
+                        ],
+                        "description": "Chroma subsampling format"
+                      },
+                      "video_bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          8,
+                          10,
+                          12
+                        ],
+                        "description": "Video bit depth"
+                      },
+                      "gop_interval_seconds": {
+                        "type": "number",
+                        "description": "GOP/keyframe interval in seconds"
+                      },
+                      "gop_type": {
+                        "type": "string",
+                        "enum": [
+                          "closed",
+                          "open"
+                        ],
+                        "description": "GOP structure type"
+                      },
+                      "moov_atom_position": {
+                        "type": "string",
+                        "enum": [
+                          "start",
+                          "end"
+                        ],
+                        "description": "Position of moov atom in MP4 container"
+                      },
+                      "has_audio": {
+                        "type": "boolean",
+                        "description": "Whether the video contains an audio track"
+                      },
+                      "audio_codec": {
+                        "type": "string",
+                        "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                      },
+                      "audio_sampling_rate_hz": {
+                        "type": "integer",
+                        "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                      },
+                      "audio_channels": {
+                        "type": "string",
+                        "enum": [
+                          "mono",
+                          "stereo",
+                          "5.1",
+                          "7.1"
+                        ],
+                        "description": "Audio channel configuration"
+                      },
+                      "audio_bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          16,
+                          24,
+                          32
+                        ],
+                        "description": "Audio bit depth"
+                      },
+                      "audio_bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Audio bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "audio_loudness_lufs": {
+                        "type": "number",
+                        "description": "Integrated loudness in LUFS"
+                      },
+                      "audio_true_peak_dbfs": {
+                        "type": "number",
+                        "description": "True peak level in dBFS"
+                      },
+                      "captions_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to captions file (WebVTT, SRT, etc.)",
+                        "x-accessibility": true
+                      },
+                      "transcript_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to text transcript of the video content",
+                        "x-accessibility": true
+                      },
+                      "audio_description_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to audio description track for visually impaired users",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "width",
+                      "height"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Audio Asset",
+                    "description": "Audio asset with URL and technical specifications",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the audio asset"
+                      },
+                      "duration_ms": {
+                        "type": "integer",
+                        "description": "Audio duration in milliseconds",
+                        "minimum": 0
+                      },
+                      "file_size_bytes": {
+                        "type": "integer",
+                        "description": "File size in bytes",
+                        "minimum": 1
+                      },
+                      "container_format": {
+                        "type": "string",
+                        "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                      },
+                      "codec": {
+                        "type": "string",
+                        "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                      },
+                      "sampling_rate_hz": {
+                        "type": "integer",
+                        "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                      },
+                      "channels": {
+                        "type": "string",
+                        "enum": [
+                          "mono",
+                          "stereo",
+                          "5.1",
+                          "7.1"
+                        ],
+                        "description": "Channel configuration"
+                      },
+                      "bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          16,
+                          24,
+                          32
+                        ],
+                        "description": "Bit depth"
+                      },
+                      "bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "loudness_lufs": {
+                        "type": "number",
+                        "description": "Integrated loudness in LUFS"
+                      },
+                      "true_peak_dbfs": {
+                        "type": "number",
+                        "description": "True peak level in dBFS"
+                      },
+                      "transcript_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to text transcript of the audio content",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "VAST Asset",
+                    "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "url",
+                            "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL endpoint that returns VAST XML"
+                          },
+                          "vast_version": {
+                            "title": "VAST Version",
+                            "description": "VAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "2.0",
+                              "3.0",
+                              "4.0",
+                              "4.1",
+                              "4.2"
+                            ]
+                          },
+                          "vpaid_enabled": {
+                            "type": "boolean",
+                            "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected video duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "VAST Tracking Event",
+                              "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "rewind",
+                                "skip",
+                                "playerExpand",
+                                "playerCollapse",
+                                "fullscreen",
+                                "exitFullscreen",
+                                "progress",
+                                "notUsed",
+                                "otherAdInteraction",
+                                "interactiveStart",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "closeLinear",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this VAST tag"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "inline",
+                            "description": "Discriminator indicating VAST is delivered as inline XML content"
+                          },
+                          "content": {
+                            "type": "string",
+                            "description": "Inline VAST XML content"
+                          },
+                          "vast_version": {
+                            "title": "VAST Version",
+                            "description": "VAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "2.0",
+                              "3.0",
+                              "4.0",
+                              "4.1",
+                              "4.2"
+                            ]
+                          },
+                          "vpaid_enabled": {
+                            "type": "boolean",
+                            "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected video duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "VAST Tracking Event",
+                              "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "rewind",
+                                "skip",
+                                "playerExpand",
+                                "playerCollapse",
+                                "fullscreen",
+                                "exitFullscreen",
+                                "progress",
+                                "notUsed",
+                                "otherAdInteraction",
+                                "interactiveStart",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "closeLinear",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this VAST tag"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Text Asset",
+                    "description": "Text content asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "Text content"
+                      },
+                      "language": {
+                        "type": "string",
+                        "description": "Language code (e.g., 'en', 'es', 'fr')"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "URL Asset",
+                    "description": "URL reference asset",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL reference"
+                      },
+                      "url_type": {
+                        "title": "URL Asset Type",
+                        "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                        "type": "string",
+                        "enum": [
+                          "clickthrough",
+                          "tracker_pixel",
+                          "tracker_script"
+                        ]
+                      },
+                      "description": {
+                        "type": "string",
+                        "description": "Description of what this URL points to"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "HTML Asset",
+                    "description": "HTML content asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "HTML content"
+                      },
+                      "version": {
+                        "type": "string",
+                        "description": "HTML version (e.g., 'HTML5')"
+                      },
+                      "accessibility": {
+                        "type": "object",
+                        "description": "Self-declared accessibility properties for this opaque creative",
+                        "x-accessibility": true,
+                        "properties": {
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Text alternative describing the creative content"
+                          },
+                          "keyboard_navigable": {
+                            "type": "boolean",
+                            "description": "Whether the creative can be fully operated via keyboard"
+                          },
+                          "motion_control": {
+                            "type": "boolean",
+                            "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                          },
+                          "screen_reader_tested": {
+                            "type": "boolean",
+                            "description": "Whether the creative has been tested with screen readers"
+                          }
+                        }
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "JavaScript Asset",
+                    "description": "JavaScript code asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "JavaScript content"
+                      },
+                      "module_type": {
+                        "title": "JavaScript Module Type",
+                        "description": "JavaScript module type",
+                        "type": "string",
+                        "enum": [
+                          "esm",
+                          "commonjs",
+                          "script"
+                        ]
+                      },
+                      "accessibility": {
+                        "type": "object",
+                        "description": "Self-declared accessibility properties for this opaque creative",
+                        "x-accessibility": true,
+                        "properties": {
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Text alternative describing the creative content"
+                          },
+                          "keyboard_navigable": {
+                            "type": "boolean",
+                            "description": "Whether the creative can be fully operated via keyboard"
+                          },
+                          "motion_control": {
+                            "type": "boolean",
+                            "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                          },
+                          "screen_reader_tested": {
+                            "type": "boolean",
+                            "description": "Whether the creative has been tested with screen readers"
+                          }
+                        }
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Webhook Asset",
+                    "description": "Webhook for server-side dynamic content rendering (DCO)",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Webhook URL to call for dynamic content"
+                      },
+                      "method": {
+                        "title": "HTTP Method",
+                        "description": "HTTP method",
+                        "type": "string",
+                        "enum": [
+                          "GET",
+                          "POST"
+                        ],
+                        "default": "POST"
+                      },
+                      "timeout_ms": {
+                        "type": "integer",
+                        "minimum": 10,
+                        "maximum": 5000,
+                        "default": 500,
+                        "description": "Maximum time to wait for response in milliseconds"
+                      },
+                      "supported_macros": {
+                        "type": "array",
+                        "items": {
+                          "oneOf": [
+                            {
+                              "title": "Universal Macro",
+                              "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                              "type": "string",
+                              "enum": [
+                                "MEDIA_BUY_ID",
+                                "PACKAGE_ID",
+                                "CREATIVE_ID",
+                                "CACHEBUSTER",
+                                "TIMESTAMP",
+                                "CLICK_URL",
+                                "GDPR",
+                                "GDPR_CONSENT",
+                                "US_PRIVACY",
+                                "GPP_STRING",
+                                "GPP_SID",
+                                "IP_ADDRESS",
+                                "LIMIT_AD_TRACKING",
+                                "DEVICE_TYPE",
+                                "OS",
+                                "OS_VERSION",
+                                "DEVICE_MAKE",
+                                "DEVICE_MODEL",
+                                "USER_AGENT",
+                                "APP_BUNDLE",
+                                "APP_NAME",
+                                "COUNTRY",
+                                "REGION",
+                                "CITY",
+                                "ZIP",
+                                "DMA",
+                                "LAT",
+                                "LONG",
+                                "DEVICE_ID",
+                                "DEVICE_ID_TYPE",
+                                "DOMAIN",
+                                "PAGE_URL",
+                                "REFERRER",
+                                "KEYWORDS",
+                                "PLACEMENT_ID",
+                                "FOLD_POSITION",
+                                "AD_WIDTH",
+                                "AD_HEIGHT",
+                                "VIDEO_ID",
+                                "VIDEO_TITLE",
+                                "VIDEO_DURATION",
+                                "VIDEO_CATEGORY",
+                                "CONTENT_GENRE",
+                                "CONTENT_RATING",
+                                "PLAYER_WIDTH",
+                                "PLAYER_HEIGHT",
+                                "POD_POSITION",
+                                "POD_SIZE",
+                                "AD_BREAK_ID",
+                                "STATION_ID",
+                                "COLLECTION_NAME",
+                                "INSTALLMENT_ID",
+                                "AUDIO_DURATION",
+                                "TMPX",
+                                "AXEM",
+                                "CATALOG_ID",
+                                "SKU",
+                                "GTIN",
+                                "OFFERING_ID",
+                                "JOB_ID",
+                                "HOTEL_ID",
+                                "FLIGHT_ID",
+                                "VEHICLE_ID",
+                                "LISTING_ID",
+                                "STORE_ID",
+                                "PROGRAM_ID",
+                                "DESTINATION_ID",
+                                "CREATIVE_VARIANT_ID",
+                                "APP_ITEM_ID"
+                              ],
+                              "enumDescriptions": {
+                                "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                "PACKAGE_ID": "AdCP package identifier",
+                                "CREATIVE_ID": "AdCP creative identifier",
+                                "CACHEBUSTER": "Random number to prevent caching",
+                                "TIMESTAMP": "Unix timestamp in milliseconds",
+                                "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                "US_PRIVACY": "US Privacy (CCPA) string",
+                                "GPP_STRING": "Global Privacy Platform consent string",
+                                "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                "OS_VERSION": "OS version number",
+                                "DEVICE_MAKE": "Device manufacturer",
+                                "DEVICE_MODEL": "Device model identifier",
+                                "USER_AGENT": "Full user agent string",
+                                "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                "APP_NAME": "Human-readable app name",
+                                "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                "REGION": "State/province/region code",
+                                "CITY": "City name",
+                                "ZIP": "Postal code",
+                                "DMA": "Nielsen DMA code (US TV markets)",
+                                "LAT": "Latitude coordinate",
+                                "LONG": "Longitude coordinate",
+                                "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                "DOMAIN": "Domain where ad is shown",
+                                "PAGE_URL": "Full page URL (encoded)",
+                                "REFERRER": "HTTP referrer URL",
+                                "KEYWORDS": "Page keywords (comma-separated)",
+                                "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                "AD_WIDTH": "Ad slot width in pixels",
+                                "AD_HEIGHT": "Ad slot height in pixels",
+                                "VIDEO_ID": "Content video identifier",
+                                "VIDEO_TITLE": "Content video title",
+                                "VIDEO_DURATION": "Content duration in seconds",
+                                "VIDEO_CATEGORY": "IAB content category",
+                                "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                "PLAYER_WIDTH": "Video player width in pixels",
+                                "PLAYER_HEIGHT": "Video player height in pixels",
+                                "POD_POSITION": "Position within ad break",
+                                "POD_SIZE": "Total ads in the ad break",
+                                "AD_BREAK_ID": "Unique ad break identifier",
+                                "STATION_ID": "Radio station or podcast identifier",
+                                "COLLECTION_NAME": "Program or collection name",
+                                "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                "AUDIO_DURATION": "Audio content duration in seconds",
+                                "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                "SKU": "Product SKU identifier for the catalog item being rendered",
+                                "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                              }
+                            },
+                            {
+                              "type": "string",
+                              "description": "Custom or publisher-specific macro name"
+                            }
+                          ]
+                        },
+                        "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                      },
+                      "required_macros": {
+                        "type": "array",
+                        "items": {
+                          "oneOf": [
+                            {
+                              "title": "Universal Macro",
+                              "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                              "type": "string",
+                              "enum": [
+                                "MEDIA_BUY_ID",
+                                "PACKAGE_ID",
+                                "CREATIVE_ID",
+                                "CACHEBUSTER",
+                                "TIMESTAMP",
+                                "CLICK_URL",
+                                "GDPR",
+                                "GDPR_CONSENT",
+                                "US_PRIVACY",
+                                "GPP_STRING",
+                                "GPP_SID",
+                                "IP_ADDRESS",
+                                "LIMIT_AD_TRACKING",
+                                "DEVICE_TYPE",
+                                "OS",
+                                "OS_VERSION",
+                                "DEVICE_MAKE",
+                                "DEVICE_MODEL",
+                                "USER_AGENT",
+                                "APP_BUNDLE",
+                                "APP_NAME",
+                                "COUNTRY",
+                                "REGION",
+                                "CITY",
+                                "ZIP",
+                                "DMA",
+                                "LAT",
+                                "LONG",
+                                "DEVICE_ID",
+                                "DEVICE_ID_TYPE",
+                                "DOMAIN",
+                                "PAGE_URL",
+                                "REFERRER",
+                                "KEYWORDS",
+                                "PLACEMENT_ID",
+                                "FOLD_POSITION",
+                                "AD_WIDTH",
+                                "AD_HEIGHT",
+                                "VIDEO_ID",
+                                "VIDEO_TITLE",
+                                "VIDEO_DURATION",
+                                "VIDEO_CATEGORY",
+                                "CONTENT_GENRE",
+                                "CONTENT_RATING",
+                                "PLAYER_WIDTH",
+                                "PLAYER_HEIGHT",
+                                "POD_POSITION",
+                                "POD_SIZE",
+                                "AD_BREAK_ID",
+                                "STATION_ID",
+                                "COLLECTION_NAME",
+                                "INSTALLMENT_ID",
+                                "AUDIO_DURATION",
+                                "TMPX",
+                                "AXEM",
+                                "CATALOG_ID",
+                                "SKU",
+                                "GTIN",
+                                "OFFERING_ID",
+                                "JOB_ID",
+                                "HOTEL_ID",
+                                "FLIGHT_ID",
+                                "VEHICLE_ID",
+                                "LISTING_ID",
+                                "STORE_ID",
+                                "PROGRAM_ID",
+                                "DESTINATION_ID",
+                                "CREATIVE_VARIANT_ID",
+                                "APP_ITEM_ID"
+                              ],
+                              "enumDescriptions": {
+                                "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                "PACKAGE_ID": "AdCP package identifier",
+                                "CREATIVE_ID": "AdCP creative identifier",
+                                "CACHEBUSTER": "Random number to prevent caching",
+                                "TIMESTAMP": "Unix timestamp in milliseconds",
+                                "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                "US_PRIVACY": "US Privacy (CCPA) string",
+                                "GPP_STRING": "Global Privacy Platform consent string",
+                                "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                "OS_VERSION": "OS version number",
+                                "DEVICE_MAKE": "Device manufacturer",
+                                "DEVICE_MODEL": "Device model identifier",
+                                "USER_AGENT": "Full user agent string",
+                                "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                "APP_NAME": "Human-readable app name",
+                                "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                "REGION": "State/province/region code",
+                                "CITY": "City name",
+                                "ZIP": "Postal code",
+                                "DMA": "Nielsen DMA code (US TV markets)",
+                                "LAT": "Latitude coordinate",
+                                "LONG": "Longitude coordinate",
+                                "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                "DOMAIN": "Domain where ad is shown",
+                                "PAGE_URL": "Full page URL (encoded)",
+                                "REFERRER": "HTTP referrer URL",
+                                "KEYWORDS": "Page keywords (comma-separated)",
+                                "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                "AD_WIDTH": "Ad slot width in pixels",
+                                "AD_HEIGHT": "Ad slot height in pixels",
+                                "VIDEO_ID": "Content video identifier",
+                                "VIDEO_TITLE": "Content video title",
+                                "VIDEO_DURATION": "Content duration in seconds",
+                                "VIDEO_CATEGORY": "IAB content category",
+                                "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                "PLAYER_WIDTH": "Video player width in pixels",
+                                "PLAYER_HEIGHT": "Video player height in pixels",
+                                "POD_POSITION": "Position within ad break",
+                                "POD_SIZE": "Total ads in the ad break",
+                                "AD_BREAK_ID": "Unique ad break identifier",
+                                "STATION_ID": "Radio station or podcast identifier",
+                                "COLLECTION_NAME": "Program or collection name",
+                                "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                "AUDIO_DURATION": "Audio content duration in seconds",
+                                "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                "SKU": "Product SKU identifier for the catalog item being rendered",
+                                "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                              }
+                            },
+                            {
+                              "type": "string",
+                              "description": "Custom or publisher-specific macro name"
+                            }
+                          ]
+                        },
+                        "description": "Universal macros that must be provided for webhook to function"
+                      },
+                      "response_type": {
+                        "title": "Webhook Response Type",
+                        "description": "Expected content type of webhook response",
+                        "type": "string",
+                        "enum": [
+                          "html",
+                          "json",
+                          "xml",
+                          "javascript"
+                        ]
+                      },
+                      "security": {
+                        "type": "object",
+                        "description": "Security configuration for webhook calls",
+                        "properties": {
+                          "method": {
+                            "title": "Webhook Security Method",
+                            "description": "Authentication method",
+                            "type": "string",
+                            "enum": [
+                              "hmac_sha256",
+                              "api_key",
+                              "none"
+                            ]
+                          },
+                          "hmac_header": {
+                            "type": "string",
+                            "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                          },
+                          "api_key_header": {
+                            "type": "string",
+                            "description": "Header name for API key (e.g., 'X-API-Key')"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "response_type",
+                      "security"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "CSS Asset",
+                    "description": "CSS stylesheet asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "CSS content"
+                      },
+                      "media": {
+                        "type": "string",
+                        "description": "CSS media query context (e.g., 'screen', 'print')"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "DAAST Asset",
+                    "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "url",
+                            "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL endpoint that returns DAAST XML"
+                          },
+                          "daast_version": {
+                            "title": "DAAST Version",
+                            "description": "DAAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "1.0",
+                              "1.1"
+                            ]
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected audio duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "DAAST Tracking Event",
+                              "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "skip",
+                                "progress",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this DAAST tag"
+                          },
+                          "companion_ads": {
+                            "type": "boolean",
+                            "description": "Whether companion display ads are included"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "inline",
+                            "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                          },
+                          "content": {
+                            "type": "string",
+                            "description": "Inline DAAST XML content"
+                          },
+                          "daast_version": {
+                            "title": "DAAST Version",
+                            "description": "DAAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "1.0",
+                              "1.1"
+                            ]
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected audio duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "DAAST Tracking Event",
+                              "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "skip",
+                                "progress",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this DAAST tag"
+                          },
+                          "companion_ads": {
+                            "type": "boolean",
+                            "description": "Whether companion display ads are included"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Markdown Asset",
+                    "description": "Markdown-formatted text content following CommonMark specification",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                      },
+                      "language": {
+                        "type": "string",
+                        "description": "Language code (e.g., 'en', 'es', 'fr')"
+                      },
+                      "markdown_flavor": {
+                        "title": "Markdown Flavor",
+                        "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                        "type": "string",
+                        "enum": [
+                          "commonmark",
+                          "gfm"
+                        ],
+                        "default": "commonmark"
+                      },
+                      "allow_raw_html": {
+                        "type": "boolean",
+                        "default": false,
+                        "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Brief Asset",
+                    "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                    "allOf": [
+                      {
+                        "title": "Creative Brief",
+                        "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                        "type": "object",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Campaign or flight name for identification"
+                          },
+                          "objective": {
+                            "type": "string",
+                            "enum": [
+                              "awareness",
+                              "consideration",
+                              "conversion",
+                              "retention",
+                              "engagement"
+                            ],
+                            "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                          },
+                          "tone": {
+                            "type": "string",
+                            "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                          },
+                          "audience": {
+                            "type": "string",
+                            "description": "Target audience description for this campaign"
+                          },
+                          "territory": {
+                            "type": "string",
+                            "description": "Creative territory or positioning the campaign should occupy"
+                          },
+                          "messaging": {
+                            "type": "object",
+                            "description": "Messaging framework for the campaign",
+                            "properties": {
+                              "headline": {
+                                "type": "string",
+                                "description": "Primary headline"
+                              },
+                              "tagline": {
+                                "type": "string",
+                                "description": "Supporting tagline or sub-headline"
+                              },
+                              "cta": {
+                                "type": "string",
+                                "description": "Call-to-action text"
+                              },
+                              "key_messages": {
+                                "type": "array",
+                                "description": "Key messages to communicate in priority order",
+                                "items": {
+                                  "type": "string"
+                                }
+                              }
+                            },
+                            "additionalProperties": true
+                          },
+                          "reference_assets": {
+                            "type": "array",
+                            "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                            "items": {
+                              "title": "Reference Asset",
+                              "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                              "type": "object",
+                              "properties": {
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the reference asset (image, video, or document)"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "style_reference",
+                                    "product_shot",
+                                    "mood_board",
+                                    "example_creative",
+                                    "logo",
+                                    "strategy_doc",
+                                    "storyboard"
+                                  ],
+                                  "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                },
+                                "description": {
+                                  "type": "string",
+                                  "description": "Human-readable description of the asset and how it should inform creative generation"
+                                }
+                              },
+                              "required": [
+                                "url",
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "compliance": {
+                            "type": "object",
+                            "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                            "properties": {
+                              "required_disclosures": {
+                                "type": "array",
+                                "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "text": {
+                                      "type": "string",
+                                      "description": "The disclosure text that must appear in the creative"
+                                    },
+                                    "position": {
+                                      "title": "Disclosure Position",
+                                      "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                      "type": "string",
+                                      "enum": [
+                                        "prominent",
+                                        "footer",
+                                        "audio",
+                                        "subtitle",
+                                        "overlay",
+                                        "end_card",
+                                        "pre_roll",
+                                        "companion"
+                                      ]
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                      "items": {
+                                        "type": "string",
+                                        "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                      },
+                                      "minItems": 1
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                    },
+                                    "language": {
+                                      "type": "string",
+                                      "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                    },
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "text"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              },
+                              "prohibited_claims": {
+                                "type": "array",
+                                "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                "items": {
+                                  "type": "string"
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Catalog Asset",
+                    "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                    "allOf": [
+                      {
+                        "title": "Catalog",
+                        "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                        "type": "object",
+                        "properties": {
+                          "catalog_id": {
+                            "type": "string",
+                            "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                          },
+                          "name": {
+                            "type": "string",
+                            "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                          },
+                          "type": {
+                            "title": "Catalog Type",
+                            "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                            "type": "string",
+                            "enum": [
+                              "offering",
+                              "product",
+                              "inventory",
+                              "store",
+                              "promotion",
+                              "hotel",
+                              "flight",
+                              "job",
+                              "vehicle",
+                              "real_estate",
+                              "education",
+                              "destination",
+                              "app"
+                            ]
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                          },
+                          "feed_format": {
+                            "title": "Feed Format",
+                            "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                            "type": "string",
+                            "enum": [
+                              "google_merchant_center",
+                              "facebook_catalog",
+                              "shopify",
+                              "linkedin_jobs",
+                              "custom"
+                            ]
+                          },
+                          "update_frequency": {
+                            "title": "Update Frequency",
+                            "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                            "type": "string",
+                            "enum": [
+                              "realtime",
+                              "hourly",
+                              "daily",
+                              "weekly"
+                            ]
+                          },
+                          "items": {
+                            "type": "array",
+                            "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                            "items": {
+                              "type": "object"
+                            },
+                            "minItems": 1
+                          },
+                          "ids": {
+                            "type": "array",
+                            "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                            "items": {
+                              "type": "string"
+                            },
+                            "minItems": 1
+                          },
+                          "gtins": {
+                            "type": "array",
+                            "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                            "items": {
+                              "type": "string",
+                              "pattern": "^[0-9]{8,14}$"
+                            },
+                            "minItems": 1
+                          },
+                          "tags": {
+                            "type": "array",
+                            "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                            "items": {
+                              "type": "string"
+                            },
+                            "minItems": 1
+                          },
+                          "category": {
+                            "type": "string",
+                            "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                          },
+                          "query": {
+                            "type": "string",
+                            "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                          },
+                          "conversion_events": {
+                            "type": "array",
+                            "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                            "items": {
+                              "title": "Event Type",
+                              "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                              "type": "string",
+                              "enum": [
+                                "page_view",
+                                "view_content",
+                                "select_content",
+                                "select_item",
+                                "search",
+                                "share",
+                                "add_to_cart",
+                                "remove_from_cart",
+                                "viewed_cart",
+                                "add_to_wishlist",
+                                "initiate_checkout",
+                                "add_payment_info",
+                                "purchase",
+                                "refund",
+                                "lead",
+                                "qualify_lead",
+                                "close_convert_lead",
+                                "disqualify_lead",
+                                "complete_registration",
+                                "subscribe",
+                                "start_trial",
+                                "app_install",
+                                "app_launch",
+                                "contact",
+                                "schedule",
+                                "donate",
+                                "submit_application",
+                                "custom"
+                              ],
+                              "enumDescriptions": {
+                                "page_view": "User viewed a page",
+                                "view_content": "User viewed specific content (product, article, etc.)",
+                                "select_content": "User selected or clicked on content (article, video, etc.)",
+                                "select_item": "User selected a specific product or item from a list",
+                                "search": "User performed a search",
+                                "share": "User shared content via social or messaging",
+                                "add_to_cart": "User added an item to cart",
+                                "remove_from_cart": "User removed an item from cart",
+                                "viewed_cart": "User viewed their shopping cart",
+                                "add_to_wishlist": "User added an item to a wishlist",
+                                "initiate_checkout": "User started checkout process",
+                                "add_payment_info": "User added payment information",
+                                "purchase": "User completed a purchase",
+                                "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                "lead": "User expressed interest (form submission, signup, etc.)",
+                                "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                "close_convert_lead": "Lead converted to a customer or closed deal",
+                                "disqualify_lead": "Lead disqualified or marked as not viable",
+                                "complete_registration": "User completed account registration",
+                                "subscribe": "User subscribed to a service or newsletter",
+                                "start_trial": "User started a free trial",
+                                "app_install": "User installed an application",
+                                "app_launch": "User launched an application",
+                                "contact": "User initiated contact (call, message, etc.)",
+                                "schedule": "User scheduled an appointment or event",
+                                "donate": "User made a donation",
+                                "submit_application": "User submitted an application (loan, job, etc.)",
+                                "custom": "Custom event type (specify in custom_event_name)"
+                              }
+                            },
+                            "minItems": 1,
+                            "uniqueItems": true
+                          },
+                          "content_id_type": {
+                            "title": "Content ID Type",
+                            "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                            "type": "string",
+                            "enum": [
+                              "sku",
+                              "gtin",
+                              "offering_id",
+                              "job_id",
+                              "hotel_id",
+                              "flight_id",
+                              "vehicle_id",
+                              "listing_id",
+                              "store_id",
+                              "program_id",
+                              "destination_id",
+                              "app_id"
+                            ]
+                          },
+                          "feed_field_mappings": {
+                            "type": "array",
+                            "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                            "items": {
+                              "title": "Catalog Field Mapping",
+                              "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                              "type": "object",
+                              "properties": {
+                                "feed_field": {
+                                  "type": "string",
+                                  "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                },
+                                "catalog_field": {
+                                  "type": "string",
+                                  "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                },
+                                "asset_group_id": {
+                                  "type": "string",
+                                  "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                },
+                                "value": {
+                                  "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                },
+                                "transform": {
+                                  "type": "string",
+                                  "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                  "enum": [
+                                    "date",
+                                    "divide",
+                                    "boolean",
+                                    "split"
+                                  ]
+                                },
+                                "format": {
+                                  "type": "string",
+                                  "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                },
+                                "timezone": {
+                                  "type": "string",
+                                  "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                },
+                                "by": {
+                                  "type": "number",
+                                  "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                  "exclusiveMinimum": 0
+                                },
+                                "separator": {
+                                  "type": "string",
+                                  "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                  "default": ","
+                                },
+                                "default": {
+                                  "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "allOf": [
+                                {
+                                  "not": {
+                                    "required": [
+                                      "feed_field",
+                                      "value"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "not": {
+                                    "required": [
+                                      "catalog_field",
+                                      "asset_group_id"
+                                    ]
+                                  }
+                                }
+                              ],
+                              "additionalProperties": true,
+                              "examples": [
+                                {
+                                  "description": "Simple field rename",
+                                  "data": {
+                                    "feed_field": "hotel_name",
+                                    "catalog_field": "name"
+                                  }
+                                },
+                                {
+                                  "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                  "data": {
+                                    "feed_field": "available_from",
+                                    "catalog_field": "valid_from",
+                                    "transform": "date",
+                                    "format": "YYYYMMDD",
+                                    "timezone": "UTC"
+                                  }
+                                },
+                                {
+                                  "description": "Divide cents to dollars",
+                                  "data": {
+                                    "feed_field": "price_cents",
+                                    "catalog_field": "price.amount",
+                                    "transform": "divide",
+                                    "by": 100
+                                  }
+                                },
+                                {
+                                  "description": "Static literal injection \u2014 currency not in feed",
+                                  "data": {
+                                    "catalog_field": "price.currency",
+                                    "value": "USD"
+                                  }
+                                },
+                                {
+                                  "description": "Image URL assigned to typed asset pool",
+                                  "data": {
+                                    "feed_field": "primary_photo_url",
+                                    "asset_group_id": "images_landscape"
+                                  }
+                                },
+                                {
+                                  "description": "Vertical photo URL assigned to vertical pool",
+                                  "data": {
+                                    "feed_field": "portrait_photo_url",
+                                    "asset_group_id": "images_vertical"
+                                  }
+                                },
+                                {
+                                  "description": "Split comma-separated tags to array",
+                                  "data": {
+                                    "feed_field": "amenity_list",
+                                    "catalog_field": "amenities",
+                                    "transform": "split",
+                                    "separator": ","
+                                  }
+                                },
+                                {
+                                  "description": "Boolean coercion with default",
+                                  "data": {
+                                    "feed_field": "is_available",
+                                    "catalog_field": "available",
+                                    "transform": "boolean",
+                                    "default": false
+                                  }
+                                }
+                              ]
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "type"
+                        ],
+                        "additionalProperties": true,
+                        "examples": [
+                          {
+                            "description": "Synced product catalog from Google Merchant Center",
+                            "data": {
+                              "catalog_id": "gmc-primary",
+                              "name": "Primary Product Feed",
+                              "type": "product",
+                              "url": "https://feeds.acmecorp.com/products.xml",
+                              "feed_format": "google_merchant_center",
+                              "update_frequency": "daily"
+                            }
+                          },
+                          {
+                            "description": "Inventory feed for store-level stock data",
+                            "data": {
+                              "catalog_id": "store-inventory",
+                              "name": "Store Inventory",
+                              "type": "inventory",
+                              "url": "https://feeds.acmecorp.com/inventory.json",
+                              "feed_format": "custom",
+                              "update_frequency": "hourly"
+                            }
+                          },
+                          {
+                            "description": "Store locator feed",
+                            "data": {
+                              "catalog_id": "retail-locations",
+                              "name": "Retail Locations",
+                              "type": "store",
+                              "url": "https://feeds.acmecorp.com/stores.json",
+                              "feed_format": "custom",
+                              "update_frequency": "weekly"
+                            }
+                          },
+                          {
+                            "description": "Promotional pricing feed",
+                            "data": {
+                              "catalog_id": "summer-sale",
+                              "name": "Summer Sale Promotions",
+                              "type": "promotion",
+                              "url": "https://feeds.acmecorp.com/promotions.json",
+                              "feed_format": "google_merchant_center",
+                              "update_frequency": "daily"
+                            }
+                          },
+                          {
+                            "description": "Inline offering catalog (no sync needed)",
+                            "data": {
+                              "type": "offering",
+                              "items": [
+                                {
+                                  "offering_id": "summer-sale",
+                                  "name": "Summer Sale",
+                                  "landing_url": "https://acme.com/summer"
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Reference to a previously synced catalog by ID",
+                            "data": {
+                              "catalog_id": "gmc-primary",
+                              "type": "product",
+                              "ids": [
+                                "SKU-12345",
+                                "SKU-67890"
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                            "data": {
+                              "type": "product",
+                              "gtins": [
+                                "00013000006040",
+                                "00013000006057"
+                              ],
+                              "content_id_type": "gtin",
+                              "conversion_events": [
+                                "purchase",
+                                "add_to_cart"
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Inline store catalog with catchment areas",
+                            "data": {
+                              "catalog_id": "retail-locations",
+                              "name": "Retail Locations",
+                              "type": "store",
+                              "items": [
+                                {
+                                  "store_id": "amsterdam-flagship",
+                                  "name": "Amsterdam Flagship",
+                                  "location": {
+                                    "lat": 52.3676,
+                                    "lng": 4.9041
+                                  },
+                                  "catchments": [
+                                    {
+                                      "catchment_id": "walk",
+                                      "travel_time": {
+                                        "value": 10,
+                                        "unit": "min"
+                                      },
+                                      "transport_mode": "walking"
+                                    },
+                                    {
+                                      "catchment_id": "drive",
+                                      "travel_time": {
+                                        "value": 15,
+                                        "unit": "min"
+                                      },
+                                      "transport_mode": "driving"
+                                    }
+                                  ]
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                ]
+              }
+            },
+            "additionalProperties": true
+          },
+          "inputs": {
+            "type": "array",
+            "description": "Preview contexts for generative formats - defines what scenarios to generate previews for",
+            "items": {
+              "type": "object",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for this preview variant"
+                },
+                "macros": {
+                  "type": "object",
+                  "description": "Macro values to apply for this preview",
+                  "additionalProperties": {
+                    "type": "string"
+                  }
+                },
+                "context_description": {
+                  "type": "string",
+                  "description": "Natural language description of the context for AI-generated content"
+                }
+              },
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
+            }
+          },
+          "tags": {
+            "type": "array",
+            "description": "User-defined tags for organization and searchability",
+            "items": {
+              "type": "string"
+            }
+          },
+          "status": {
+            "title": "Creative Status",
+            "description": "For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+            "type": "string",
+            "enum": [
+              "processing",
+              "pending_review",
+              "approved",
+              "rejected",
+              "archived"
+            ],
+            "enumDescriptions": {
+              "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
+              "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+              "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+              "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+              "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+            }
+          },
+          "weight": {
+            "type": "number",
+            "description": "Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.",
+            "minimum": 0,
+            "maximum": 100
+          },
+          "placement_ids": {
+            "type": "array",
+            "description": "Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "industry_identifiers": {
+            "type": "array",
+            "description": "Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.",
+            "items": {
+              "title": "Industry Identifier",
+              "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+              "type": "object",
+              "properties": {
+                "type": {
+                  "title": "Creative Identifier Type",
+                  "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                  "type": "string",
+                  "enum": [
+                    "ad_id",
+                    "isci",
+                    "clearcast_clock"
+                  ],
+                  "enumDescriptions": {
+                    "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                    "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                    "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                  },
+                  "examples": [
+                    "ad_id",
+                    "isci",
+                    "clearcast_clock"
+                  ]
+                },
+                "value": {
+                  "type": "string",
+                  "maxLength": 64,
+                  "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                }
+              },
+              "required": [
+                "type",
+                "value"
+              ],
+              "additionalProperties": true
+            },
+            "uniqueItems": true
+          },
+          "provenance": {
+            "title": "Provenance",
+            "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).",
+            "type": "object",
+            "properties": {
+              "digital_source_type": {
+                "title": "Digital Source Type",
+                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                "type": "string",
+                "enum": [
+                  "digital_capture",
+                  "digital_creation",
+                  "trained_algorithmic_media",
+                  "composite_with_trained_algorithmic_media",
+                  "algorithmic_media",
+                  "composite_capture",
+                  "composite_synthetic",
+                  "human_edits",
+                  "data_driven_media"
+                ],
+                "enumDescriptions": {
+                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                  "composite_capture": "Multiple digital captures composited together without AI",
+                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                }
+              },
+              "ai_tool": {
+                "type": "object",
+                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                "properties": {
+                  "name": {
+                    "type": "string",
+                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                  },
+                  "version": {
+                    "type": "string",
+                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                  },
+                  "provider": {
+                    "type": "string",
+                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                  }
+                },
+                "required": [
+                  "name"
+                ],
+                "additionalProperties": true
+              },
+              "human_oversight": {
+                "type": "string",
+                "description": "Level of human involvement in the AI-assisted creation process",
+                "enum": [
+                  "none",
+                  "prompt_only",
+                  "selected",
+                  "edited",
+                  "directed"
+                ],
+                "enumDescriptions": {
+                  "none": "Fully automated with no human involvement in generation",
+                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                  "selected": "Human selected from multiple AI-generated candidates",
+                  "edited": "Human edited or refined AI-generated output",
+                  "directed": "Human directed the creative process with AI as an assistive tool"
+                }
+              },
+              "declared_by": {
+                "type": "object",
+                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent or service that declared this provenance"
+                  },
+                  "role": {
+                    "type": "string",
+                    "enum": [
+                      "creator",
+                      "advertiser",
+                      "agency",
+                      "platform",
+                      "tool"
+                    ],
+                    "description": "Role of the declaring party in the supply chain",
+                    "enumDescriptions": {
+                      "creator": "The party that created or generated the content",
+                      "advertiser": "The brand or advertiser that owns the content",
+                      "agency": "Agency acting on behalf of the advertiser",
+                      "platform": "Ad platform or publisher that processed the content",
+                      "tool": "Automated tool or service that attached provenance metadata"
+                    }
+                  }
+                },
+                "required": [
+                  "role"
+                ],
+                "additionalProperties": true
+              },
+              "declared_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+              },
+              "created_time": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this content was created or generated (ISO 8601)"
+              },
+              "c2pa": {
+                "type": "object",
+                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                "properties": {
+                  "manifest_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL to the C2PA manifest store for this content"
+                  }
+                },
+                "required": [
+                  "manifest_url"
+                ],
+                "additionalProperties": true
+              },
+              "disclosure": {
+                "type": "object",
+                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                "properties": {
+                  "required": {
+                    "type": "boolean",
+                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                  },
+                  "jurisdictions": {
+                    "type": "array",
+                    "description": "Jurisdictions where disclosure obligations apply",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "country": {
+                          "type": "string",
+                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                        },
+                        "region": {
+                          "type": "string",
+                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                        },
+                        "regulation": {
+                          "type": "string",
+                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                        },
+                        "label_text": {
+                          "type": "string",
+                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                        },
+                        "render_guidance": {
+                          "type": "object",
+                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                          "minProperties": 1,
+                          "properties": {
+                            "persistence": {
+                              "title": "Disclosure Persistence",
+                              "description": "How long the disclosure must persist during content playback or display",
+                              "type": "string",
+                              "enum": [
+                                "continuous",
+                                "initial",
+                                "flexible"
+                              ],
+                              "enumDescriptions": {
+                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                              }
+                            },
+                            "min_duration_ms": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                            },
+                            "positions": {
+                              "type": "array",
+                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                              "items": {
+                                "title": "Disclosure Position",
+                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                "type": "string",
+                                "enum": [
+                                  "prominent",
+                                  "footer",
+                                  "audio",
+                                  "subtitle",
+                                  "overlay",
+                                  "end_card",
+                                  "pre_roll",
+                                  "companion"
+                                ]
+                              },
+                              "minItems": 1,
+                              "uniqueItems": true
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "country",
+                        "regulation"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "required"
+                ],
+                "additionalProperties": true
+              },
+              "verification": {
+                "type": "array",
+                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                "minItems": 1,
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "verified_by": {
+                      "type": "string",
+                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                    },
+                    "verified_time": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When the verification was performed (ISO 8601)"
+                    },
+                    "result": {
+                      "type": "string",
+                      "enum": [
+                        "authentic",
+                        "ai_generated",
+                        "ai_modified",
+                        "inconclusive"
+                      ],
+                      "description": "Verification outcome"
+                    },
+                    "confidence": {
+                      "type": "number",
+                      "minimum": 0,
+                      "maximum": 1,
+                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                    },
+                    "details_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the full verification report"
+                    }
+                  },
+                  "required": [
+                    "verified_by",
+                    "result"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "creative_id",
+          "name",
+          "format_id",
+          "assets"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1,
+      "maxItems": 100
+    },
+    "creative_ids": {
+      "type": "array",
+      "description": "Optional filter to limit sync scope to specific creative IDs. When provided, only these creatives will be created/updated. Other creatives in the library are unaffected. Useful for partial updates and error recovery.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "maxItems": 100
+    },
+    "assignments": {
+      "type": "array",
+      "description": "Optional bulk assignment of creatives to packages. Each entry maps one creative to one package with optional weight and placement targeting. Standalone creative agents that do not manage media buys ignore this field.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "ID of the creative to assign"
+          },
+          "package_id": {
+            "type": "string",
+            "description": "ID of the package to assign the creative to"
+          },
+          "weight": {
+            "type": "number",
+            "description": "Relative delivery weight (0-100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+            "minimum": 0,
+            "maximum": 100
+          },
+          "placement_ids": {
+            "type": "array",
+            "description": "Restrict this creative to specific placements within the package. When omitted, the creative is eligible for all placements.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "creative_id",
+          "package_id"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated idempotency key for safe retries. If a sync fails without a response, resending with the same idempotency_key guarantees at-most-once execution. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, creatives not included in this sync will be archived. Use with caution for full library replacement. Invalid when creative_ids is provided \u2014 delete_missing applies to the entire library scope, not a filtered subset."
+    },
+    "dry_run": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, preview changes without applying them. Returns what would be created/updated/deleted."
+    },
+    "validation_mode": {
+      "title": "Validation Mode",
+      "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid creatives and reports errors.",
+      "type": "string",
+      "enum": [
+        "strict",
+        "lenient"
+      ],
+      "default": "strict"
+    },
+    "push_notification_config": {
+      "title": "Push Notification Config",
+      "description": "Optional webhook configuration for async sync notifications. The agent will send a webhook when sync completes if the operation takes longer than immediate response time (typically for large bulk operations or manual approval/HITL).",
+      "type": "object",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for task status notifications"
+        },
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "title": "Authentication Scheme",
+                "description": "Authentication schemes for push notification endpoints",
+                "type": "string",
+                "enum": [
+                  "Bearer",
+                  "HMAC-SHA256"
+                ]
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        }
+      },
+      "required": [
+        "url",
+        "authentication"
+      ]
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account",
+    "creatives"
+  ],
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Full sync with hosted video creative",
+      "data": {
+        "idempotency_key": "550e8400-e29b-41d4-a716-446655440000",
+        "account": {
+          "account_id": "acct_acmecorp"
+        },
+        "creatives": [
+          {
+            "creative_id": "hero_video_30s",
+            "name": "Brand Hero Video 30s",
+            "format_id": {
+              "agent_url": "https://creative.adcontextprotocol.org",
+              "id": "video_standard_30s"
+            },
+            "assets": {
+              "video": {
+                "url": "https://cdn.example.com/hero-video.mp4",
+                "width": 1920,
+                "height": 1080,
+                "duration_ms": 30000
+              }
+            },
+            "tags": [
+              "q1_2026",
+              "video"
+            ]
+          }
+        ],
+        "assignments": [
+          {
+            "creative_id": "hero_video_30s",
+            "package_id": "pkg_ctv_001"
+          },
+          {
+            "creative_id": "hero_video_30s",
+            "package_id": "pkg_ctv_002"
+          }
+        ]
+      }
+    },
+    {
+      "description": "Generative creative with approval",
+      "data": {
+        "idempotency_key": "5f8b1f3a-1234-4a5b-9cde-1234567890ab",
+        "account": {
+          "account_id": "acct_acmecorp"
+        },
+        "creatives": [
+          {
+            "creative_id": "holiday_hero",
+            "name": "Holiday Campaign Hero",
+            "format_id": {
+              "agent_url": "https://creative.example.com",
+              "id": "premium_bespoke_display"
+            },
+            "assets": {
+              "product_catalog": {
+                "type": "product",
+                "catalog_id": "winter-products"
+              },
+              "generation_prompt": {
+                "content": "Create a warm, festive holiday campaign featuring winter products"
+              }
+            },
+            "tags": [
+              "holiday",
+              "q4_2026"
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "description": "Scoped update using creative_ids filter",
+      "data": {
+        "idempotency_key": "6a9c2f4b-5678-49ab-8def-fedcba987654",
+        "account": {
+          "account_id": "acct_acmecorp"
+        },
+        "creative_ids": [
+          "hero_video_30s",
+          "banner_300x250"
+        ],
+        "creatives": [
+          {
+            "creative_id": "hero_video_30s",
+            "name": "Brand Hero Video 30s - Updated",
+            "format_id": {
+              "agent_url": "https://creative.adcontextprotocol.org",
+              "id": "video_standard_30s"
+            },
+            "assets": {
+              "video": {
+                "url": "https://cdn.example.com/updated-hero.mp4",
+                "width": 1920,
+                "height": 1080,
+                "duration_ms": 30000
+              }
+            }
+          },
+          {
+            "creative_id": "banner_300x250",
+            "name": "Display Banner 300x250 - Updated",
+            "format_id": {
+              "agent_url": "https://creative.adcontextprotocol.org",
+              "id": "display_300x250"
+            },
+            "assets": {
+              "image": {
+                "url": "https://cdn.example.com/updated-banner.png",
+                "width": 300,
+                "height": 250
+              }
+            }
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.312Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/creative/sync-creatives-response.json b/schemas/cache/bundled/creative/sync-creatives-response.json
new file mode 100644
index 000000000..d3f73f59c
--- /dev/null
+++ b/schemas/cache/bundled/creative/sync-creatives-response.json
@@ -0,0 +1,903 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Creatives Response",
+  "description": "Response from creative sync operation. Returns either per-creative results (best-effort processing) OR operation-level errors (complete failure). This enforces atomic semantics at the operation level while allowing per-item failures within successful operations.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "SyncCreativesSuccess",
+      "description": "Success response - sync operation processed creatives (may include per-item failures)",
+      "type": "object",
+      "properties": {
+        "dry_run": {
+          "type": "boolean",
+          "description": "Whether this was a dry run (no actual changes made)"
+        },
+        "creatives": {
+          "type": "array",
+          "description": "Results for each creative processed. Items with action='failed' indicate per-item validation/processing failures, not operation-level failures.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "creative_id": {
+                "type": "string",
+                "description": "Creative ID from the request"
+              },
+              "account": {
+                "title": "Account",
+                "description": "Account that owns this creative",
+                "type": "object",
+                "properties": {
+                  "account_id": {
+                    "type": "string",
+                    "description": "Unique identifier for this account"
+                  },
+                  "name": {
+                    "type": "string",
+                    "description": "Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')"
+                  },
+                  "advertiser": {
+                    "type": "string",
+                    "description": "The advertiser whose rates apply to this account"
+                  },
+                  "billing_proxy": {
+                    "type": "string",
+                    "description": "Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)"
+                  },
+                  "status": {
+                    "title": "Account Status",
+                    "description": "Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.",
+                    "type": "string",
+                    "enum": [
+                      "active",
+                      "pending_approval",
+                      "rejected",
+                      "payment_required",
+                      "suspended",
+                      "closed"
+                    ],
+                    "enumDescriptions": {
+                      "active": "Account is operational and can create media buys",
+                      "pending_approval": "Seller is reviewing the account (credit, contracts)",
+                      "rejected": "Seller declined the account request \u2014 terminal state",
+                      "payment_required": "Credit limit reached or funds depleted",
+                      "suspended": "Was active, now paused \u2014 operations gated",
+                      "closed": "Was active, now terminated \u2014 terminal state"
+                    }
+                  },
+                  "brand": {
+                    "title": "Brand Reference",
+                    "description": "Brand reference identifying the advertiser",
+                    "type": "object",
+                    "properties": {
+                      "domain": {
+                        "type": "string",
+                        "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                        "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                      },
+                      "brand_id": {
+                        "title": "Brand ID",
+                        "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "tide",
+                          "cheerios",
+                          "air_jordan",
+                          "nike",
+                          "pampers"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "domain"
+                    ],
+                    "additionalProperties": false,
+                    "examples": [
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "spark"
+                      },
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "glow"
+                      },
+                      {
+                        "domain": "acme-corp.com"
+                      }
+                    ]
+                  },
+                  "operator": {
+                    "type": "string",
+                    "description": "Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "billing": {
+                    "type": "string",
+                    "enum": [
+                      "operator",
+                      "agent",
+                      "advertiser"
+                    ],
+                    "description": "Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+                  },
+                  "billing_entity": {
+                    "title": "Business Entity",
+                    "description": "Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).",
+                    "type": "object",
+                    "properties": {
+                      "legal_name": {
+                        "type": "string",
+                        "description": "Registered legal name of the business entity",
+                        "maxLength": 200
+                      },
+                      "vat_id": {
+                        "type": "string",
+                        "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+                        "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+                      },
+                      "tax_id": {
+                        "type": "string",
+                        "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+                        "maxLength": 30
+                      },
+                      "registration_number": {
+                        "type": "string",
+                        "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+                        "maxLength": 50
+                      },
+                      "address": {
+                        "type": "object",
+                        "description": "Postal address for invoicing and legal correspondence",
+                        "properties": {
+                          "street": {
+                            "type": "string",
+                            "description": "Street address including building number",
+                            "maxLength": 200
+                          },
+                          "city": {
+                            "type": "string",
+                            "maxLength": 100
+                          },
+                          "postal_code": {
+                            "type": "string",
+                            "maxLength": 20
+                          },
+                          "region": {
+                            "type": "string",
+                            "description": "State, province, or region",
+                            "maxLength": 100
+                          },
+                          "country": {
+                            "type": "string",
+                            "description": "ISO 3166-1 alpha-2 country code",
+                            "pattern": "^[A-Z]{2}$"
+                          }
+                        },
+                        "required": [
+                          "street",
+                          "city",
+                          "postal_code",
+                          "country"
+                        ],
+                        "additionalProperties": false
+                      },
+                      "contacts": {
+                        "type": "array",
+                        "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "billing",
+                                "legal",
+                                "creative",
+                                "general"
+                              ],
+                              "enumDescriptions": {
+                                "billing": "Accounts payable and invoice queries",
+                                "legal": "Contract and compliance matters",
+                                "creative": "Material submission and creative approval",
+                                "general": "Default contact when no specific role applies"
+                              },
+                              "description": "Contact's functional role in the business relationship"
+                            },
+                            "name": {
+                              "type": "string",
+                              "description": "Full name of the contact",
+                              "maxLength": 200
+                            },
+                            "email": {
+                              "type": "string",
+                              "format": "email",
+                              "maxLength": 254
+                            },
+                            "phone": {
+                              "type": "string",
+                              "maxLength": 30
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "maxItems": 10
+                      },
+                      "bank": {
+                        "type": "object",
+                        "writeOnly": true,
+                        "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+                        "properties": {
+                          "account_holder": {
+                            "type": "string",
+                            "description": "Name on the bank account",
+                            "maxLength": 200
+                          },
+                          "iban": {
+                            "type": "string",
+                            "description": "International Bank Account Number (SEPA markets)",
+                            "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+                          },
+                          "bic": {
+                            "type": "string",
+                            "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+                            "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+                          },
+                          "routing_number": {
+                            "type": "string",
+                            "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+                            "maxLength": 30
+                          },
+                          "account_number": {
+                            "type": "string",
+                            "description": "Bank account number for non-SEPA markets",
+                            "maxLength": 30
+                          }
+                        },
+                        "required": [
+                          "account_holder"
+                        ],
+                        "additionalProperties": false
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "legal_name"
+                    ],
+                    "additionalProperties": false,
+                    "examples": [
+                      {
+                        "description": "German agency with full B2B details",
+                        "data": {
+                          "legal_name": "Pinnacle Media GmbH",
+                          "vat_id": "DE123456789",
+                          "registration_number": "HRB 12345",
+                          "address": {
+                            "street": "Friedrichstrasse 100",
+                            "city": "Berlin",
+                            "postal_code": "10117",
+                            "country": "DE"
+                          },
+                          "contacts": [
+                            {
+                              "role": "billing",
+                              "name": "Sam Adeyemi",
+                              "email": "billing@pinnacle-media.com",
+                              "phone": "+49 30 12345678"
+                            }
+                          ],
+                          "bank": {
+                            "account_holder": "Pinnacle Media GmbH",
+                            "iban": "DE89370400440532013000",
+                            "bic": "COBADEFFXXX"
+                          }
+                        }
+                      },
+                      {
+                        "description": "US advertiser with EIN and domestic bank details",
+                        "data": {
+                          "legal_name": "Acme Corporation",
+                          "tax_id": "12-3456789",
+                          "address": {
+                            "street": "123 Main St",
+                            "city": "New York",
+                            "postal_code": "10001",
+                            "region": "NY",
+                            "country": "US"
+                          },
+                          "contacts": [
+                            {
+                              "role": "billing",
+                              "name": "AP Department",
+                              "email": "ap@acme-corp.com"
+                            }
+                          ],
+                          "bank": {
+                            "account_holder": "Acme Corporation",
+                            "routing_number": "021000021",
+                            "account_number": "123456789"
+                          }
+                        }
+                      }
+                    ]
+                  },
+                  "rate_card": {
+                    "type": "string",
+                    "description": "Identifier for the rate card applied to this account"
+                  },
+                  "payment_terms": {
+                    "type": "string",
+                    "enum": [
+                      "net_15",
+                      "net_30",
+                      "net_45",
+                      "net_60",
+                      "net_90",
+                      "prepay"
+                    ],
+                    "description": "Payment terms agreed for this account. Binding for all invoices when the account is active."
+                  },
+                  "credit_limit": {
+                    "type": "object",
+                    "description": "Maximum outstanding balance allowed",
+                    "properties": {
+                      "amount": {
+                        "type": "number",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "pattern": "^[A-Z]{3}$"
+                      }
+                    },
+                    "required": [
+                      "amount",
+                      "currency"
+                    ]
+                  },
+                  "setup": {
+                    "type": "object",
+                    "description": "Present when status is 'pending_approval'. Contains next steps for completing account activation.",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL where the human can complete the required action (credit application, legal agreement, add funds)."
+                      },
+                      "message": {
+                        "type": "string",
+                        "description": "Human-readable description of what's needed."
+                      },
+                      "expires_at": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When this setup link expires."
+                      }
+                    },
+                    "required": [
+                      "message"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "account_scope": {
+                    "type": "string",
+                    "enum": [
+                      "operator",
+                      "brand",
+                      "operator_brand",
+                      "agent"
+                    ],
+                    "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+                  },
+                  "governance_agents": {
+                    "type": "array",
+                    "description": "Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses \u2014 use sync_governance to set or update credentials.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "pattern": "^https://",
+                          "description": "Governance agent endpoint URL. Must use HTTPS."
+                        },
+                        "categories": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "maxLength": 64,
+                            "pattern": "^[a-z][a-z0-9_]*$"
+                          },
+                          "description": "Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "url"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "maxItems": 10
+                  },
+                  "reporting_bucket": {
+                    "type": "object",
+                    "description": "Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix \u2014 bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities).",
+                    "properties": {
+                      "protocol": {
+                        "title": "Cloud Storage Protocol",
+                        "description": "Cloud storage protocol",
+                        "type": "string",
+                        "enum": [
+                          "s3",
+                          "gcs",
+                          "azure_blob"
+                        ]
+                      },
+                      "bucket": {
+                        "type": "string",
+                        "description": "Bucket or container name",
+                        "minLength": 3,
+                        "maxLength": 63,
+                        "pattern": "^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$"
+                      },
+                      "prefix": {
+                        "type": "string",
+                        "description": "Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.",
+                        "maxLength": 512,
+                        "pattern": "^[a-zA-Z0-9/_.-]+$",
+                        "examples": [
+                          "accounts/pinnacle/adcp",
+                          "reporting/2024"
+                        ]
+                      },
+                      "region": {
+                        "type": "string",
+                        "description": "Cloud region for the bucket",
+                        "maxLength": 64,
+                        "pattern": "^[a-z0-9-]+$",
+                        "examples": [
+                          "us-east-1",
+                          "europe-west1"
+                        ]
+                      },
+                      "format": {
+                        "type": "string",
+                        "enum": [
+                          "jsonl",
+                          "csv",
+                          "parquet",
+                          "avro",
+                          "orc"
+                        ],
+                        "description": "File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).",
+                        "default": "jsonl"
+                      },
+                      "compression": {
+                        "type": "string",
+                        "enum": [
+                          "gzip",
+                          "none"
+                        ],
+                        "description": "Compression applied to delivered files",
+                        "default": "gzip"
+                      },
+                      "file_retention_days": {
+                        "type": "integer",
+                        "description": "How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.",
+                        "minimum": 1,
+                        "examples": [
+                          14,
+                          30,
+                          90
+                        ]
+                      },
+                      "setup_instructions": {
+                        "type": "string",
+                        "format": "uri",
+                        "pattern": "^https://",
+                        "description": "URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation \u2014 buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery."
+                      }
+                    },
+                    "required": [
+                      "protocol",
+                      "bucket",
+                      "file_retention_days"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "sandbox": {
+                    "type": "boolean",
+                    "description": "When true, this is a sandbox account \u2014 no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account."
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "account_id",
+                  "name",
+                  "status"
+                ],
+                "additionalProperties": true,
+                "examples": [
+                  {
+                    "description": "Direct advertiser account",
+                    "data": {
+                      "account_id": "acc_acme_direct",
+                      "name": "Acme",
+                      "advertiser": "Acme Corp",
+                      "brand": {
+                        "domain": "acme-corp.com"
+                      },
+                      "operator": "acme-corp.com",
+                      "status": "active",
+                      "billing": "operator",
+                      "account_scope": "brand",
+                      "rate_card": "acme_vip_2024",
+                      "payment_terms": "net_30"
+                    }
+                  },
+                  {
+                    "description": "Advertiser account with agency billing proxy",
+                    "data": {
+                      "account_id": "acc_acme_pinnacle",
+                      "name": "Acme c/o Pinnacle",
+                      "advertiser": "Acme Corp",
+                      "billing_proxy": "Pinnacle Media",
+                      "brand": {
+                        "domain": "acme-corp.com"
+                      },
+                      "operator": "pinnacle-media.com",
+                      "status": "active",
+                      "billing": "operator",
+                      "account_scope": "operator_brand",
+                      "rate_card": "acme_vip_2024",
+                      "payment_terms": "net_60"
+                    }
+                  },
+                  {
+                    "description": "Agency as direct buyer",
+                    "data": {
+                      "account_id": "acc_pinnacle",
+                      "name": "Pinnacle",
+                      "advertiser": "Pinnacle Media",
+                      "brand": {
+                        "domain": "pinnacle-media.com"
+                      },
+                      "operator": "pinnacle-media.com",
+                      "status": "active",
+                      "billing": "operator",
+                      "account_scope": "operator",
+                      "rate_card": "agency_standard",
+                      "payment_terms": "net_45"
+                    }
+                  },
+                  {
+                    "description": "Account with brand identity and operator (via sync_accounts)",
+                    "data": {
+                      "account_id": "acc_spark_001",
+                      "name": "Spark (via Pinnacle)",
+                      "advertiser": "Nova Brands",
+                      "status": "active",
+                      "brand": {
+                        "domain": "nova-brands.com",
+                        "brand_id": "spark"
+                      },
+                      "operator": "pinnacle-media.com",
+                      "billing": "agent",
+                      "account_scope": "operator_brand",
+                      "payment_terms": "net_30"
+                    }
+                  },
+                  {
+                    "description": "Pending account awaiting seller approval",
+                    "data": {
+                      "account_id": "acc_glow_pending",
+                      "name": "Glow",
+                      "advertiser": "Nova Brands",
+                      "status": "pending_approval",
+                      "brand": {
+                        "domain": "nova-brands.com",
+                        "brand_id": "glow"
+                      },
+                      "operator": "pinnacle-media.com",
+                      "billing": "operator",
+                      "account_scope": "brand"
+                    }
+                  },
+                  {
+                    "description": "Agency operates but advertiser is billed directly with structured billing entity",
+                    "data": {
+                      "account_id": "acc_acme_direct_bill",
+                      "name": "Acme (billed direct)",
+                      "advertiser": "Acme Corp",
+                      "brand": {
+                        "domain": "acme-corp.com"
+                      },
+                      "operator": "pinnacle-media.com",
+                      "status": "active",
+                      "billing": "advertiser",
+                      "billing_entity": {
+                        "legal_name": "Acme Corporation GmbH",
+                        "vat_id": "DE987654321",
+                        "address": {
+                          "street": "Hauptstrasse 42",
+                          "city": "Munich",
+                          "postal_code": "80331",
+                          "country": "DE"
+                        },
+                        "contacts": [
+                          {
+                            "role": "billing",
+                            "name": "AP Department",
+                            "email": "billing@acme-corp.com"
+                          }
+                        ]
+                      },
+                      "account_scope": "operator_brand",
+                      "payment_terms": "net_30"
+                    }
+                  }
+                ]
+              },
+              "action": {
+                "title": "Creative Action",
+                "description": "Action taken for this creative",
+                "type": "string",
+                "enum": [
+                  "created",
+                  "updated",
+                  "unchanged",
+                  "failed",
+                  "deleted"
+                ]
+              },
+              "platform_id": {
+                "type": "string",
+                "description": "Platform-specific ID assigned to the creative"
+              },
+              "changes": {
+                "type": "array",
+                "description": "Field names that were modified (only present when action='updated')",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "errors": {
+                "type": "array",
+                "description": "Validation or processing errors (only present when action='failed')",
+                "items": {
+                  "title": "Error",
+                  "description": "Standard error structure for task-specific errors and warnings",
+                  "type": "object",
+                  "properties": {
+                    "code": {
+                      "type": "string",
+                      "minLength": 1,
+                      "maxLength": 64,
+                      "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+                    },
+                    "message": {
+                      "type": "string",
+                      "description": "Human-readable error message"
+                    },
+                    "field": {
+                      "type": "string",
+                      "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+                    },
+                    "suggestion": {
+                      "type": "string",
+                      "description": "Suggested fix for the error"
+                    },
+                    "retry_after": {
+                      "type": "number",
+                      "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                      "minimum": 1,
+                      "maximum": 3600
+                    },
+                    "details": {
+                      "type": "object",
+                      "description": "Additional task-specific error details",
+                      "additionalProperties": true
+                    },
+                    "recovery": {
+                      "type": "string",
+                      "enum": [
+                        "transient",
+                        "correctable",
+                        "terminal"
+                      ],
+                      "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "message"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "warnings": {
+                "type": "array",
+                "description": "Non-fatal warnings about this creative",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "preview_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Preview URL for generative creatives (only present for generative formats)"
+              },
+              "expires_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp when preview link expires (only present when preview_url exists)"
+              },
+              "assigned_to": {
+                "type": "array",
+                "description": "Package IDs this creative was successfully assigned to (only present when assignments were requested)",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "assignment_errors": {
+                "type": "object",
+                "description": "Assignment errors by package ID (only present when assignment failures occurred)",
+                "patternProperties": {
+                  "^[a-zA-Z0-9_-]+$": {
+                    "type": "string",
+                    "description": "Error message for this package assignment"
+                  }
+                },
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "creative_id",
+              "action"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "creatives"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "SyncCreativesError",
+      "description": "Error response - operation failed completely, no creatives were processed",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors that prevented processing any creatives (e.g., authentication failure, service unavailable, invalid request format)",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "creatives"
+            ]
+          },
+          {
+            "required": [
+              "dry_run"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.317Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/build-creative-request.json b/schemas/cache/bundled/media-buy/build-creative-request.json
new file mode 100644
index 000000000..1299fdcc0
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/build-creative-request.json
@@ -0,0 +1,6537 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Build Creative Request",
+  "description": "Request to transform, generate, or retrieve a creative manifest. Supports three modes: (1) generation from a brief or seed assets, (2) transformation of an existing manifest, (3) retrieval from a creative library by creative_id. Produces target manifest(s) in the specified format(s). Provide either target_format_id for a single format or target_format_ids for multiple formats.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "message": {
+      "type": "string",
+      "description": "Natural language instructions for the transformation or generation. For pure generation, this is the creative brief. For transformation, this provides guidance on how to adapt the creative. For refinement, this describes the desired changes."
+    },
+    "creative_manifest": {
+      "title": "Creative Manifest",
+      "description": "Creative manifest to transform or generate from. For pure generation, this should include the target format_id and any required input assets. For transformation (e.g., resizing, reformatting), this is the complete creative to adapt. When creative_id is provided, the agent resolves the creative from its library and this field is ignored.",
+      "type": "object",
+      "properties": {
+        "format_id": {
+          "title": "Format ID",
+          "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+          "type": "object",
+          "properties": {
+            "agent_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+            },
+            "id": {
+              "type": "string",
+              "pattern": "^[a-zA-Z0-9_-]+$",
+              "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+            },
+            "width": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "height": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+            },
+            "duration_ms": {
+              "type": "number",
+              "minimum": 1,
+              "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+            }
+          },
+          "required": [
+            "agent_url",
+            "id"
+          ],
+          "additionalProperties": true,
+          "dependencies": {
+            "width": [
+              "height"
+            ],
+            "height": [
+              "width"
+            ]
+          }
+        },
+        "assets": {
+          "type": "object",
+          "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+          "patternProperties": {
+            "^[a-z0-9_]+$": {
+              "anyOf": [
+                {
+                  "title": "Image Asset",
+                  "description": "Image asset with URL and dimensions",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the image asset"
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels"
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels"
+                    },
+                    "format": {
+                      "type": "string",
+                      "description": "Image file format (jpg, png, gif, webp, etc.)"
+                    },
+                    "alt_text": {
+                      "type": "string",
+                      "description": "Alternative text for accessibility",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "width",
+                    "height"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Video Asset",
+                  "description": "Video asset with URL and technical specifications including audio track properties",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the video asset"
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels"
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels"
+                    },
+                    "duration_ms": {
+                      "type": "integer",
+                      "description": "Video duration in milliseconds",
+                      "minimum": 1
+                    },
+                    "file_size_bytes": {
+                      "type": "integer",
+                      "description": "File size in bytes",
+                      "minimum": 1
+                    },
+                    "container_format": {
+                      "type": "string",
+                      "description": "Video container format (mp4, webm, mov, etc.)"
+                    },
+                    "video_codec": {
+                      "type": "string",
+                      "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                    },
+                    "video_bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Video stream bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "frame_rate": {
+                      "type": "string",
+                      "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                    },
+                    "frame_rate_type": {
+                      "type": "string",
+                      "enum": [
+                        "constant",
+                        "variable"
+                      ],
+                      "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                    },
+                    "scan_type": {
+                      "type": "string",
+                      "enum": [
+                        "progressive",
+                        "interlaced"
+                      ],
+                      "description": "Scan type of the video"
+                    },
+                    "color_space": {
+                      "type": "string",
+                      "enum": [
+                        "rec709",
+                        "rec2020",
+                        "rec2100",
+                        "srgb",
+                        "dci_p3"
+                      ],
+                      "description": "Color space of the video"
+                    },
+                    "hdr_format": {
+                      "type": "string",
+                      "enum": [
+                        "sdr",
+                        "hdr10",
+                        "hdr10_plus",
+                        "hlg",
+                        "dolby_vision"
+                      ],
+                      "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                    },
+                    "chroma_subsampling": {
+                      "type": "string",
+                      "enum": [
+                        "4:2:0",
+                        "4:2:2",
+                        "4:4:4"
+                      ],
+                      "description": "Chroma subsampling format"
+                    },
+                    "video_bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        8,
+                        10,
+                        12
+                      ],
+                      "description": "Video bit depth"
+                    },
+                    "gop_interval_seconds": {
+                      "type": "number",
+                      "description": "GOP/keyframe interval in seconds"
+                    },
+                    "gop_type": {
+                      "type": "string",
+                      "enum": [
+                        "closed",
+                        "open"
+                      ],
+                      "description": "GOP structure type"
+                    },
+                    "moov_atom_position": {
+                      "type": "string",
+                      "enum": [
+                        "start",
+                        "end"
+                      ],
+                      "description": "Position of moov atom in MP4 container"
+                    },
+                    "has_audio": {
+                      "type": "boolean",
+                      "description": "Whether the video contains an audio track"
+                    },
+                    "audio_codec": {
+                      "type": "string",
+                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                    },
+                    "audio_sampling_rate_hz": {
+                      "type": "integer",
+                      "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                    },
+                    "audio_channels": {
+                      "type": "string",
+                      "enum": [
+                        "mono",
+                        "stereo",
+                        "5.1",
+                        "7.1"
+                      ],
+                      "description": "Audio channel configuration"
+                    },
+                    "audio_bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        16,
+                        24,
+                        32
+                      ],
+                      "description": "Audio bit depth"
+                    },
+                    "audio_bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Audio bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "audio_loudness_lufs": {
+                      "type": "number",
+                      "description": "Integrated loudness in LUFS"
+                    },
+                    "audio_true_peak_dbfs": {
+                      "type": "number",
+                      "description": "True peak level in dBFS"
+                    },
+                    "captions_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to captions file (WebVTT, SRT, etc.)",
+                      "x-accessibility": true
+                    },
+                    "transcript_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to text transcript of the video content",
+                      "x-accessibility": true
+                    },
+                    "audio_description_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to audio description track for visually impaired users",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "width",
+                    "height"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Audio Asset",
+                  "description": "Audio asset with URL and technical specifications",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the audio asset"
+                    },
+                    "duration_ms": {
+                      "type": "integer",
+                      "description": "Audio duration in milliseconds",
+                      "minimum": 0
+                    },
+                    "file_size_bytes": {
+                      "type": "integer",
+                      "description": "File size in bytes",
+                      "minimum": 1
+                    },
+                    "container_format": {
+                      "type": "string",
+                      "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                    },
+                    "codec": {
+                      "type": "string",
+                      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                    },
+                    "sampling_rate_hz": {
+                      "type": "integer",
+                      "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                    },
+                    "channels": {
+                      "type": "string",
+                      "enum": [
+                        "mono",
+                        "stereo",
+                        "5.1",
+                        "7.1"
+                      ],
+                      "description": "Channel configuration"
+                    },
+                    "bit_depth": {
+                      "type": "integer",
+                      "enum": [
+                        16,
+                        24,
+                        32
+                      ],
+                      "description": "Bit depth"
+                    },
+                    "bitrate_kbps": {
+                      "type": "integer",
+                      "description": "Bitrate in kilobits per second",
+                      "minimum": 1
+                    },
+                    "loudness_lufs": {
+                      "type": "number",
+                      "description": "Integrated loudness in LUFS"
+                    },
+                    "true_peak_dbfs": {
+                      "type": "number",
+                      "description": "True peak level in dBFS"
+                    },
+                    "transcript_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to text transcript of the audio content",
+                      "x-accessibility": true
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "VAST Asset",
+                  "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL endpoint that returns VAST XML"
+                        },
+                        "vast_version": {
+                          "title": "VAST Version",
+                          "description": "VAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ]
+                        },
+                        "vpaid_enabled": {
+                          "type": "boolean",
+                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected video duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "VAST Tracking Event",
+                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "rewind",
+                              "skip",
+                              "playerExpand",
+                              "playerCollapse",
+                              "fullscreen",
+                              "exitFullscreen",
+                              "progress",
+                              "notUsed",
+                              "otherAdInteraction",
+                              "interactiveStart",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "closeLinear",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this VAST tag"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "inline",
+                          "description": "Discriminator indicating VAST is delivered as inline XML content"
+                        },
+                        "content": {
+                          "type": "string",
+                          "description": "Inline VAST XML content"
+                        },
+                        "vast_version": {
+                          "title": "VAST Version",
+                          "description": "VAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ]
+                        },
+                        "vpaid_enabled": {
+                          "type": "boolean",
+                          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected video duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "VAST Tracking Event",
+                            "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "rewind",
+                              "skip",
+                              "playerExpand",
+                              "playerCollapse",
+                              "fullscreen",
+                              "exitFullscreen",
+                              "progress",
+                              "notUsed",
+                              "otherAdInteraction",
+                              "interactiveStart",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "closeLinear",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this VAST tag"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Text Asset",
+                  "description": "Text content asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "Text content"
+                    },
+                    "language": {
+                      "type": "string",
+                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "URL Asset",
+                  "description": "URL reference asset",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL reference"
+                    },
+                    "url_type": {
+                      "title": "URL Asset Type",
+                      "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                      "type": "string",
+                      "enum": [
+                        "clickthrough",
+                        "tracker_pixel",
+                        "tracker_script"
+                      ]
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Description of what this URL points to"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "HTML Asset",
+                  "description": "HTML content asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "HTML content"
+                    },
+                    "version": {
+                      "type": "string",
+                      "description": "HTML version (e.g., 'HTML5')"
+                    },
+                    "accessibility": {
+                      "type": "object",
+                      "description": "Self-declared accessibility properties for this opaque creative",
+                      "x-accessibility": true,
+                      "properties": {
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Text alternative describing the creative content"
+                        },
+                        "keyboard_navigable": {
+                          "type": "boolean",
+                          "description": "Whether the creative can be fully operated via keyboard"
+                        },
+                        "motion_control": {
+                          "type": "boolean",
+                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                        },
+                        "screen_reader_tested": {
+                          "type": "boolean",
+                          "description": "Whether the creative has been tested with screen readers"
+                        }
+                      }
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "JavaScript Asset",
+                  "description": "JavaScript code asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "JavaScript content"
+                    },
+                    "module_type": {
+                      "title": "JavaScript Module Type",
+                      "description": "JavaScript module type",
+                      "type": "string",
+                      "enum": [
+                        "esm",
+                        "commonjs",
+                        "script"
+                      ]
+                    },
+                    "accessibility": {
+                      "type": "object",
+                      "description": "Self-declared accessibility properties for this opaque creative",
+                      "x-accessibility": true,
+                      "properties": {
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Text alternative describing the creative content"
+                        },
+                        "keyboard_navigable": {
+                          "type": "boolean",
+                          "description": "Whether the creative can be fully operated via keyboard"
+                        },
+                        "motion_control": {
+                          "type": "boolean",
+                          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                        },
+                        "screen_reader_tested": {
+                          "type": "boolean",
+                          "description": "Whether the creative has been tested with screen readers"
+                        }
+                      }
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Webhook Asset",
+                  "description": "Webhook for server-side dynamic content rendering (DCO)",
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "Webhook URL to call for dynamic content"
+                    },
+                    "method": {
+                      "title": "HTTP Method",
+                      "description": "HTTP method",
+                      "type": "string",
+                      "enum": [
+                        "GET",
+                        "POST"
+                      ],
+                      "default": "POST"
+                    },
+                    "timeout_ms": {
+                      "type": "integer",
+                      "minimum": 10,
+                      "maximum": 5000,
+                      "default": 500,
+                      "description": "Maximum time to wait for response in milliseconds"
+                    },
+                    "supported_macros": {
+                      "type": "array",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "title": "Universal Macro",
+                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                            "type": "string",
+                            "enum": [
+                              "MEDIA_BUY_ID",
+                              "PACKAGE_ID",
+                              "CREATIVE_ID",
+                              "CACHEBUSTER",
+                              "TIMESTAMP",
+                              "CLICK_URL",
+                              "GDPR",
+                              "GDPR_CONSENT",
+                              "US_PRIVACY",
+                              "GPP_STRING",
+                              "GPP_SID",
+                              "IP_ADDRESS",
+                              "LIMIT_AD_TRACKING",
+                              "DEVICE_TYPE",
+                              "OS",
+                              "OS_VERSION",
+                              "DEVICE_MAKE",
+                              "DEVICE_MODEL",
+                              "USER_AGENT",
+                              "APP_BUNDLE",
+                              "APP_NAME",
+                              "COUNTRY",
+                              "REGION",
+                              "CITY",
+                              "ZIP",
+                              "DMA",
+                              "LAT",
+                              "LONG",
+                              "DEVICE_ID",
+                              "DEVICE_ID_TYPE",
+                              "DOMAIN",
+                              "PAGE_URL",
+                              "REFERRER",
+                              "KEYWORDS",
+                              "PLACEMENT_ID",
+                              "FOLD_POSITION",
+                              "AD_WIDTH",
+                              "AD_HEIGHT",
+                              "VIDEO_ID",
+                              "VIDEO_TITLE",
+                              "VIDEO_DURATION",
+                              "VIDEO_CATEGORY",
+                              "CONTENT_GENRE",
+                              "CONTENT_RATING",
+                              "PLAYER_WIDTH",
+                              "PLAYER_HEIGHT",
+                              "POD_POSITION",
+                              "POD_SIZE",
+                              "AD_BREAK_ID",
+                              "STATION_ID",
+                              "COLLECTION_NAME",
+                              "INSTALLMENT_ID",
+                              "AUDIO_DURATION",
+                              "TMPX",
+                              "AXEM",
+                              "CATALOG_ID",
+                              "SKU",
+                              "GTIN",
+                              "OFFERING_ID",
+                              "JOB_ID",
+                              "HOTEL_ID",
+                              "FLIGHT_ID",
+                              "VEHICLE_ID",
+                              "LISTING_ID",
+                              "STORE_ID",
+                              "PROGRAM_ID",
+                              "DESTINATION_ID",
+                              "CREATIVE_VARIANT_ID",
+                              "APP_ITEM_ID"
+                            ],
+                            "enumDescriptions": {
+                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                              "PACKAGE_ID": "AdCP package identifier",
+                              "CREATIVE_ID": "AdCP creative identifier",
+                              "CACHEBUSTER": "Random number to prevent caching",
+                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                              "US_PRIVACY": "US Privacy (CCPA) string",
+                              "GPP_STRING": "Global Privacy Platform consent string",
+                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                              "OS_VERSION": "OS version number",
+                              "DEVICE_MAKE": "Device manufacturer",
+                              "DEVICE_MODEL": "Device model identifier",
+                              "USER_AGENT": "Full user agent string",
+                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                              "APP_NAME": "Human-readable app name",
+                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                              "REGION": "State/province/region code",
+                              "CITY": "City name",
+                              "ZIP": "Postal code",
+                              "DMA": "Nielsen DMA code (US TV markets)",
+                              "LAT": "Latitude coordinate",
+                              "LONG": "Longitude coordinate",
+                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                              "DOMAIN": "Domain where ad is shown",
+                              "PAGE_URL": "Full page URL (encoded)",
+                              "REFERRER": "HTTP referrer URL",
+                              "KEYWORDS": "Page keywords (comma-separated)",
+                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                              "AD_WIDTH": "Ad slot width in pixels",
+                              "AD_HEIGHT": "Ad slot height in pixels",
+                              "VIDEO_ID": "Content video identifier",
+                              "VIDEO_TITLE": "Content video title",
+                              "VIDEO_DURATION": "Content duration in seconds",
+                              "VIDEO_CATEGORY": "IAB content category",
+                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                              "PLAYER_WIDTH": "Video player width in pixels",
+                              "PLAYER_HEIGHT": "Video player height in pixels",
+                              "POD_POSITION": "Position within ad break",
+                              "POD_SIZE": "Total ads in the ad break",
+                              "AD_BREAK_ID": "Unique ad break identifier",
+                              "STATION_ID": "Radio station or podcast identifier",
+                              "COLLECTION_NAME": "Program or collection name",
+                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                              "AUDIO_DURATION": "Audio content duration in seconds",
+                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                            }
+                          },
+                          {
+                            "type": "string",
+                            "description": "Custom or publisher-specific macro name"
+                          }
+                        ]
+                      },
+                      "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                    },
+                    "required_macros": {
+                      "type": "array",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "title": "Universal Macro",
+                            "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                            "type": "string",
+                            "enum": [
+                              "MEDIA_BUY_ID",
+                              "PACKAGE_ID",
+                              "CREATIVE_ID",
+                              "CACHEBUSTER",
+                              "TIMESTAMP",
+                              "CLICK_URL",
+                              "GDPR",
+                              "GDPR_CONSENT",
+                              "US_PRIVACY",
+                              "GPP_STRING",
+                              "GPP_SID",
+                              "IP_ADDRESS",
+                              "LIMIT_AD_TRACKING",
+                              "DEVICE_TYPE",
+                              "OS",
+                              "OS_VERSION",
+                              "DEVICE_MAKE",
+                              "DEVICE_MODEL",
+                              "USER_AGENT",
+                              "APP_BUNDLE",
+                              "APP_NAME",
+                              "COUNTRY",
+                              "REGION",
+                              "CITY",
+                              "ZIP",
+                              "DMA",
+                              "LAT",
+                              "LONG",
+                              "DEVICE_ID",
+                              "DEVICE_ID_TYPE",
+                              "DOMAIN",
+                              "PAGE_URL",
+                              "REFERRER",
+                              "KEYWORDS",
+                              "PLACEMENT_ID",
+                              "FOLD_POSITION",
+                              "AD_WIDTH",
+                              "AD_HEIGHT",
+                              "VIDEO_ID",
+                              "VIDEO_TITLE",
+                              "VIDEO_DURATION",
+                              "VIDEO_CATEGORY",
+                              "CONTENT_GENRE",
+                              "CONTENT_RATING",
+                              "PLAYER_WIDTH",
+                              "PLAYER_HEIGHT",
+                              "POD_POSITION",
+                              "POD_SIZE",
+                              "AD_BREAK_ID",
+                              "STATION_ID",
+                              "COLLECTION_NAME",
+                              "INSTALLMENT_ID",
+                              "AUDIO_DURATION",
+                              "TMPX",
+                              "AXEM",
+                              "CATALOG_ID",
+                              "SKU",
+                              "GTIN",
+                              "OFFERING_ID",
+                              "JOB_ID",
+                              "HOTEL_ID",
+                              "FLIGHT_ID",
+                              "VEHICLE_ID",
+                              "LISTING_ID",
+                              "STORE_ID",
+                              "PROGRAM_ID",
+                              "DESTINATION_ID",
+                              "CREATIVE_VARIANT_ID",
+                              "APP_ITEM_ID"
+                            ],
+                            "enumDescriptions": {
+                              "MEDIA_BUY_ID": "AdCP media buy identifier",
+                              "PACKAGE_ID": "AdCP package identifier",
+                              "CREATIVE_ID": "AdCP creative identifier",
+                              "CACHEBUSTER": "Random number to prevent caching",
+                              "TIMESTAMP": "Unix timestamp in milliseconds",
+                              "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                              "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                              "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                              "US_PRIVACY": "US Privacy (CCPA) string",
+                              "GPP_STRING": "Global Privacy Platform consent string",
+                              "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                              "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                              "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                              "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                              "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                              "OS_VERSION": "OS version number",
+                              "DEVICE_MAKE": "Device manufacturer",
+                              "DEVICE_MODEL": "Device model identifier",
+                              "USER_AGENT": "Full user agent string",
+                              "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                              "APP_NAME": "Human-readable app name",
+                              "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                              "REGION": "State/province/region code",
+                              "CITY": "City name",
+                              "ZIP": "Postal code",
+                              "DMA": "Nielsen DMA code (US TV markets)",
+                              "LAT": "Latitude coordinate",
+                              "LONG": "Longitude coordinate",
+                              "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                              "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                              "DOMAIN": "Domain where ad is shown",
+                              "PAGE_URL": "Full page URL (encoded)",
+                              "REFERRER": "HTTP referrer URL",
+                              "KEYWORDS": "Page keywords (comma-separated)",
+                              "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                              "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                              "AD_WIDTH": "Ad slot width in pixels",
+                              "AD_HEIGHT": "Ad slot height in pixels",
+                              "VIDEO_ID": "Content video identifier",
+                              "VIDEO_TITLE": "Content video title",
+                              "VIDEO_DURATION": "Content duration in seconds",
+                              "VIDEO_CATEGORY": "IAB content category",
+                              "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                              "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                              "PLAYER_WIDTH": "Video player width in pixels",
+                              "PLAYER_HEIGHT": "Video player height in pixels",
+                              "POD_POSITION": "Position within ad break",
+                              "POD_SIZE": "Total ads in the ad break",
+                              "AD_BREAK_ID": "Unique ad break identifier",
+                              "STATION_ID": "Radio station or podcast identifier",
+                              "COLLECTION_NAME": "Program or collection name",
+                              "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                              "AUDIO_DURATION": "Audio content duration in seconds",
+                              "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                              "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                              "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                              "SKU": "Product SKU identifier for the catalog item being rendered",
+                              "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                              "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                              "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                              "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                              "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                              "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                              "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                              "STORE_ID": "Store location identifier for the catalog item being rendered",
+                              "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                              "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                              "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                              "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                            }
+                          },
+                          {
+                            "type": "string",
+                            "description": "Custom or publisher-specific macro name"
+                          }
+                        ]
+                      },
+                      "description": "Universal macros that must be provided for webhook to function"
+                    },
+                    "response_type": {
+                      "title": "Webhook Response Type",
+                      "description": "Expected content type of webhook response",
+                      "type": "string",
+                      "enum": [
+                        "html",
+                        "json",
+                        "xml",
+                        "javascript"
+                      ]
+                    },
+                    "security": {
+                      "type": "object",
+                      "description": "Security configuration for webhook calls",
+                      "properties": {
+                        "method": {
+                          "title": "Webhook Security Method",
+                          "description": "Authentication method",
+                          "type": "string",
+                          "enum": [
+                            "hmac_sha256",
+                            "api_key",
+                            "none"
+                          ]
+                        },
+                        "hmac_header": {
+                          "type": "string",
+                          "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                        },
+                        "api_key_header": {
+                          "type": "string",
+                          "description": "Header name for API key (e.g., 'X-API-Key')"
+                        }
+                      },
+                      "required": [
+                        "method"
+                      ]
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "url",
+                    "response_type",
+                    "security"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CSS Asset",
+                  "description": "CSS stylesheet asset",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "CSS content"
+                    },
+                    "media": {
+                      "type": "string",
+                      "description": "CSS media query context (e.g., 'screen', 'print')"
+                    },
+                    "provenance": {
+                      "title": "Provenance",
+                      "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                      "type": "object",
+                      "properties": {
+                        "digital_source_type": {
+                          "title": "Digital Source Type",
+                          "description": "IPTC-aligned classification of AI involvement in producing this content",
+                          "type": "string",
+                          "enum": [
+                            "digital_capture",
+                            "digital_creation",
+                            "trained_algorithmic_media",
+                            "composite_with_trained_algorithmic_media",
+                            "algorithmic_media",
+                            "composite_capture",
+                            "composite_synthetic",
+                            "human_edits",
+                            "data_driven_media"
+                          ],
+                          "enumDescriptions": {
+                            "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                            "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                            "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                            "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                            "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                            "composite_capture": "Multiple digital captures composited together without AI",
+                            "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                            "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                            "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                          }
+                        },
+                        "ai_tool": {
+                          "type": "object",
+                          "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                            },
+                            "provider": {
+                              "type": "string",
+                              "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "human_oversight": {
+                          "type": "string",
+                          "description": "Level of human involvement in the AI-assisted creation process",
+                          "enum": [
+                            "none",
+                            "prompt_only",
+                            "selected",
+                            "edited",
+                            "directed"
+                          ],
+                          "enumDescriptions": {
+                            "none": "Fully automated with no human involvement in generation",
+                            "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                            "selected": "Human selected from multiple AI-generated candidates",
+                            "edited": "Human edited or refined AI-generated output",
+                            "directed": "Human directed the creative process with AI as an assistive tool"
+                          }
+                        },
+                        "declared_by": {
+                          "type": "object",
+                          "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                          "properties": {
+                            "agent_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL of the agent or service that declared this provenance"
+                            },
+                            "role": {
+                              "type": "string",
+                              "enum": [
+                                "creator",
+                                "advertiser",
+                                "agency",
+                                "platform",
+                                "tool"
+                              ],
+                              "description": "Role of the declaring party in the supply chain",
+                              "enumDescriptions": {
+                                "creator": "The party that created or generated the content",
+                                "advertiser": "The brand or advertiser that owns the content",
+                                "agency": "Agency acting on behalf of the advertiser",
+                                "platform": "Ad platform or publisher that processed the content",
+                                "tool": "Automated tool or service that attached provenance metadata"
+                              }
+                            }
+                          },
+                          "required": [
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "declared_at": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                        },
+                        "created_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When this content was created or generated (ISO 8601)"
+                        },
+                        "c2pa": {
+                          "type": "object",
+                          "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                          "properties": {
+                            "manifest_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the C2PA manifest store for this content"
+                            }
+                          },
+                          "required": [
+                            "manifest_url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "disclosure": {
+                          "type": "object",
+                          "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                          "properties": {
+                            "required": {
+                              "type": "boolean",
+                              "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                            },
+                            "jurisdictions": {
+                              "type": "array",
+                              "description": "Jurisdictions where disclosure obligations apply",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "country": {
+                                    "type": "string",
+                                    "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                  },
+                                  "region": {
+                                    "type": "string",
+                                    "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                  },
+                                  "label_text": {
+                                    "type": "string",
+                                    "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                  },
+                                  "render_guidance": {
+                                    "type": "object",
+                                    "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                    "minProperties": 1,
+                                    "properties": {
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                      },
+                                      "positions": {
+                                        "type": "array",
+                                        "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                        "items": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "minItems": 1,
+                                        "uniqueItems": true
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "country",
+                                  "regulation"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "required"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "verification": {
+                          "type": "array",
+                          "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                          "minItems": 1,
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "verified_by": {
+                                "type": "string",
+                                "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                              },
+                              "verified_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When the verification was performed (ISO 8601)"
+                              },
+                              "result": {
+                                "type": "string",
+                                "enum": [
+                                  "authentic",
+                                  "ai_generated",
+                                  "ai_modified",
+                                  "inconclusive"
+                                ],
+                                "description": "Verification outcome"
+                              },
+                              "confidence": {
+                                "type": "number",
+                                "minimum": 0,
+                                "maximum": 1,
+                                "description": "Confidence score of the verification result (0.0 to 1.0)"
+                              },
+                              "details_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the full verification report"
+                              }
+                            },
+                            "required": [
+                              "verified_by",
+                              "result"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "DAAST Asset",
+                  "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "url",
+                          "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL endpoint that returns DAAST XML"
+                        },
+                        "daast_version": {
+                          "title": "DAAST Version",
+                          "description": "DAAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "1.0",
+                            "1.1"
+                          ]
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected audio duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "DAAST Tracking Event",
+                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "skip",
+                              "progress",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this DAAST tag"
+                        },
+                        "companion_ads": {
+                          "type": "boolean",
+                          "description": "Whether companion display ads are included"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "delivery_type": {
+                          "type": "string",
+                          "const": "inline",
+                          "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                        },
+                        "content": {
+                          "type": "string",
+                          "description": "Inline DAAST XML content"
+                        },
+                        "daast_version": {
+                          "title": "DAAST Version",
+                          "description": "DAAST specification version",
+                          "type": "string",
+                          "enum": [
+                            "1.0",
+                            "1.1"
+                          ]
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Expected audio duration in milliseconds (if known)",
+                          "minimum": 0
+                        },
+                        "tracking_events": {
+                          "type": "array",
+                          "items": {
+                            "title": "DAAST Tracking Event",
+                            "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                            "type": "string",
+                            "enum": [
+                              "impression",
+                              "creativeView",
+                              "loaded",
+                              "start",
+                              "firstQuartile",
+                              "midpoint",
+                              "thirdQuartile",
+                              "complete",
+                              "mute",
+                              "unmute",
+                              "pause",
+                              "resume",
+                              "skip",
+                              "progress",
+                              "clickTracking",
+                              "customClick",
+                              "close",
+                              "error",
+                              "viewable",
+                              "notViewable",
+                              "viewUndetermined",
+                              "measurableImpression",
+                              "viewableImpression"
+                            ]
+                          },
+                          "description": "Tracking events supported by this DAAST tag"
+                        },
+                        "companion_ads": {
+                          "type": "boolean",
+                          "description": "Whether companion display ads are included"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "delivery_type",
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Markdown Asset",
+                  "description": "Markdown-formatted text content following CommonMark specification",
+                  "type": "object",
+                  "properties": {
+                    "content": {
+                      "type": "string",
+                      "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                    },
+                    "language": {
+                      "type": "string",
+                      "description": "Language code (e.g., 'en', 'es', 'fr')"
+                    },
+                    "markdown_flavor": {
+                      "title": "Markdown Flavor",
+                      "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                      "type": "string",
+                      "enum": [
+                        "commonmark",
+                        "gfm"
+                      ],
+                      "default": "commonmark"
+                    },
+                    "allow_raw_html": {
+                      "type": "boolean",
+                      "default": false,
+                      "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                    }
+                  },
+                  "required": [
+                    "content"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Brief Asset",
+                  "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                  "allOf": [
+                    {
+                      "title": "Creative Brief",
+                      "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                      "type": "object",
+                      "properties": {
+                        "name": {
+                          "type": "string",
+                          "description": "Campaign or flight name for identification"
+                        },
+                        "objective": {
+                          "type": "string",
+                          "enum": [
+                            "awareness",
+                            "consideration",
+                            "conversion",
+                            "retention",
+                            "engagement"
+                          ],
+                          "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                        },
+                        "tone": {
+                          "type": "string",
+                          "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                        },
+                        "audience": {
+                          "type": "string",
+                          "description": "Target audience description for this campaign"
+                        },
+                        "territory": {
+                          "type": "string",
+                          "description": "Creative territory or positioning the campaign should occupy"
+                        },
+                        "messaging": {
+                          "type": "object",
+                          "description": "Messaging framework for the campaign",
+                          "properties": {
+                            "headline": {
+                              "type": "string",
+                              "description": "Primary headline"
+                            },
+                            "tagline": {
+                              "type": "string",
+                              "description": "Supporting tagline or sub-headline"
+                            },
+                            "cta": {
+                              "type": "string",
+                              "description": "Call-to-action text"
+                            },
+                            "key_messages": {
+                              "type": "array",
+                              "description": "Key messages to communicate in priority order",
+                              "items": {
+                                "type": "string"
+                              }
+                            }
+                          },
+                          "additionalProperties": true
+                        },
+                        "reference_assets": {
+                          "type": "array",
+                          "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                          "items": {
+                            "title": "Reference Asset",
+                            "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                            "type": "object",
+                            "properties": {
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the reference asset (image, video, or document)"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "style_reference",
+                                  "product_shot",
+                                  "mood_board",
+                                  "example_creative",
+                                  "logo",
+                                  "strategy_doc",
+                                  "storyboard"
+                                ],
+                                "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of the asset and how it should inform creative generation"
+                              }
+                            },
+                            "required": [
+                              "url",
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          }
+                        },
+                        "compliance": {
+                          "type": "object",
+                          "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                          "properties": {
+                            "required_disclosures": {
+                              "type": "array",
+                              "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "text": {
+                                    "type": "string",
+                                    "description": "The disclosure text that must appear in the creative"
+                                  },
+                                  "position": {
+                                    "title": "Disclosure Position",
+                                    "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                    "type": "string",
+                                    "enum": [
+                                      "prominent",
+                                      "footer",
+                                      "audio",
+                                      "subtitle",
+                                      "overlay",
+                                      "end_card",
+                                      "pre_roll",
+                                      "companion"
+                                    ]
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                    "items": {
+                                      "type": "string",
+                                      "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                    },
+                                    "minItems": 1
+                                  },
+                                  "regulation": {
+                                    "type": "string",
+                                    "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                  },
+                                  "language": {
+                                    "type": "string",
+                                    "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                  },
+                                  "persistence": {
+                                    "title": "Disclosure Persistence",
+                                    "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                    "type": "string",
+                                    "enum": [
+                                      "continuous",
+                                      "initial",
+                                      "flexible"
+                                    ],
+                                    "enumDescriptions": {
+                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "text"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "minItems": 1
+                            },
+                            "prohibited_claims": {
+                              "type": "array",
+                              "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                              "items": {
+                                "type": "string"
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "name"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                {
+                  "title": "Catalog Asset",
+                  "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                  "allOf": [
+                    {
+                      "title": "Catalog",
+                      "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                      "type": "object",
+                      "properties": {
+                        "catalog_id": {
+                          "type": "string",
+                          "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                        },
+                        "name": {
+                          "type": "string",
+                          "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                        },
+                        "type": {
+                          "title": "Catalog Type",
+                          "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                          "type": "string",
+                          "enum": [
+                            "offering",
+                            "product",
+                            "inventory",
+                            "store",
+                            "promotion",
+                            "hotel",
+                            "flight",
+                            "job",
+                            "vehicle",
+                            "real_estate",
+                            "education",
+                            "destination",
+                            "app"
+                          ]
+                        },
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                        },
+                        "feed_format": {
+                          "title": "Feed Format",
+                          "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                          "type": "string",
+                          "enum": [
+                            "google_merchant_center",
+                            "facebook_catalog",
+                            "shopify",
+                            "linkedin_jobs",
+                            "custom"
+                          ]
+                        },
+                        "update_frequency": {
+                          "title": "Update Frequency",
+                          "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                          "type": "string",
+                          "enum": [
+                            "realtime",
+                            "hourly",
+                            "daily",
+                            "weekly"
+                          ]
+                        },
+                        "items": {
+                          "type": "array",
+                          "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                          "items": {
+                            "type": "object"
+                          },
+                          "minItems": 1
+                        },
+                        "ids": {
+                          "type": "array",
+                          "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "gtins": {
+                          "type": "array",
+                          "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                          "items": {
+                            "type": "string",
+                            "pattern": "^[0-9]{8,14}$"
+                          },
+                          "minItems": 1
+                        },
+                        "tags": {
+                          "type": "array",
+                          "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "category": {
+                          "type": "string",
+                          "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                        },
+                        "query": {
+                          "type": "string",
+                          "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                        },
+                        "conversion_events": {
+                          "type": "array",
+                          "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                          "items": {
+                            "title": "Event Type",
+                            "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "content_id_type": {
+                          "title": "Content ID Type",
+                          "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                          "type": "string",
+                          "enum": [
+                            "sku",
+                            "gtin",
+                            "offering_id",
+                            "job_id",
+                            "hotel_id",
+                            "flight_id",
+                            "vehicle_id",
+                            "listing_id",
+                            "store_id",
+                            "program_id",
+                            "destination_id",
+                            "app_id"
+                          ]
+                        },
+                        "feed_field_mappings": {
+                          "type": "array",
+                          "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                          "items": {
+                            "title": "Catalog Field Mapping",
+                            "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                            "type": "object",
+                            "properties": {
+                              "feed_field": {
+                                "type": "string",
+                                "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                              },
+                              "catalog_field": {
+                                "type": "string",
+                                "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                              },
+                              "asset_group_id": {
+                                "type": "string",
+                                "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                              },
+                              "value": {
+                                "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                              },
+                              "transform": {
+                                "type": "string",
+                                "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                "enum": [
+                                  "date",
+                                  "divide",
+                                  "boolean",
+                                  "split"
+                                ]
+                              },
+                              "format": {
+                                "type": "string",
+                                "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                              },
+                              "timezone": {
+                                "type": "string",
+                                "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                              },
+                              "by": {
+                                "type": "number",
+                                "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                "exclusiveMinimum": 0
+                              },
+                              "separator": {
+                                "type": "string",
+                                "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                "default": ","
+                              },
+                              "default": {
+                                "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "allOf": [
+                              {
+                                "not": {
+                                  "required": [
+                                    "feed_field",
+                                    "value"
+                                  ]
+                                }
+                              },
+                              {
+                                "not": {
+                                  "required": [
+                                    "catalog_field",
+                                    "asset_group_id"
+                                  ]
+                                }
+                              }
+                            ],
+                            "additionalProperties": true,
+                            "examples": [
+                              {
+                                "description": "Simple field rename",
+                                "data": {
+                                  "feed_field": "hotel_name",
+                                  "catalog_field": "name"
+                                }
+                              },
+                              {
+                                "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                "data": {
+                                  "feed_field": "available_from",
+                                  "catalog_field": "valid_from",
+                                  "transform": "date",
+                                  "format": "YYYYMMDD",
+                                  "timezone": "UTC"
+                                }
+                              },
+                              {
+                                "description": "Divide cents to dollars",
+                                "data": {
+                                  "feed_field": "price_cents",
+                                  "catalog_field": "price.amount",
+                                  "transform": "divide",
+                                  "by": 100
+                                }
+                              },
+                              {
+                                "description": "Static literal injection \u2014 currency not in feed",
+                                "data": {
+                                  "catalog_field": "price.currency",
+                                  "value": "USD"
+                                }
+                              },
+                              {
+                                "description": "Image URL assigned to typed asset pool",
+                                "data": {
+                                  "feed_field": "primary_photo_url",
+                                  "asset_group_id": "images_landscape"
+                                }
+                              },
+                              {
+                                "description": "Vertical photo URL assigned to vertical pool",
+                                "data": {
+                                  "feed_field": "portrait_photo_url",
+                                  "asset_group_id": "images_vertical"
+                                }
+                              },
+                              {
+                                "description": "Split comma-separated tags to array",
+                                "data": {
+                                  "feed_field": "amenity_list",
+                                  "catalog_field": "amenities",
+                                  "transform": "split",
+                                  "separator": ","
+                                }
+                              },
+                              {
+                                "description": "Boolean coercion with default",
+                                "data": {
+                                  "feed_field": "is_available",
+                                  "catalog_field": "available",
+                                  "transform": "boolean",
+                                  "default": false
+                                }
+                              }
+                            ]
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "type"
+                      ],
+                      "additionalProperties": true,
+                      "examples": [
+                        {
+                          "description": "Synced product catalog from Google Merchant Center",
+                          "data": {
+                            "catalog_id": "gmc-primary",
+                            "name": "Primary Product Feed",
+                            "type": "product",
+                            "url": "https://feeds.acmecorp.com/products.xml",
+                            "feed_format": "google_merchant_center",
+                            "update_frequency": "daily"
+                          }
+                        },
+                        {
+                          "description": "Inventory feed for store-level stock data",
+                          "data": {
+                            "catalog_id": "store-inventory",
+                            "name": "Store Inventory",
+                            "type": "inventory",
+                            "url": "https://feeds.acmecorp.com/inventory.json",
+                            "feed_format": "custom",
+                            "update_frequency": "hourly"
+                          }
+                        },
+                        {
+                          "description": "Store locator feed",
+                          "data": {
+                            "catalog_id": "retail-locations",
+                            "name": "Retail Locations",
+                            "type": "store",
+                            "url": "https://feeds.acmecorp.com/stores.json",
+                            "feed_format": "custom",
+                            "update_frequency": "weekly"
+                          }
+                        },
+                        {
+                          "description": "Promotional pricing feed",
+                          "data": {
+                            "catalog_id": "summer-sale",
+                            "name": "Summer Sale Promotions",
+                            "type": "promotion",
+                            "url": "https://feeds.acmecorp.com/promotions.json",
+                            "feed_format": "google_merchant_center",
+                            "update_frequency": "daily"
+                          }
+                        },
+                        {
+                          "description": "Inline offering catalog (no sync needed)",
+                          "data": {
+                            "type": "offering",
+                            "items": [
+                              {
+                                "offering_id": "summer-sale",
+                                "name": "Summer Sale",
+                                "landing_url": "https://acme.com/summer"
+                              }
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Reference to a previously synced catalog by ID",
+                          "data": {
+                            "catalog_id": "gmc-primary",
+                            "type": "product",
+                            "ids": [
+                              "SKU-12345",
+                              "SKU-67890"
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                          "data": {
+                            "type": "product",
+                            "gtins": [
+                              "00013000006040",
+                              "00013000006057"
+                            ],
+                            "content_id_type": "gtin",
+                            "conversion_events": [
+                              "purchase",
+                              "add_to_cart"
+                            ]
+                          }
+                        },
+                        {
+                          "description": "Inline store catalog with catchment areas",
+                          "data": {
+                            "catalog_id": "retail-locations",
+                            "name": "Retail Locations",
+                            "type": "store",
+                            "items": [
+                              {
+                                "store_id": "amsterdam-flagship",
+                                "name": "Amsterdam Flagship",
+                                "location": {
+                                  "lat": 52.3676,
+                                  "lng": 4.9041
+                                },
+                                "catchments": [
+                                  {
+                                    "catchment_id": "walk",
+                                    "travel_time": {
+                                      "value": 10,
+                                      "unit": "min"
+                                    },
+                                    "transport_mode": "walking"
+                                  },
+                                  {
+                                    "catchment_id": "drive",
+                                    "travel_time": {
+                                      "value": 15,
+                                      "unit": "min"
+                                    },
+                                    "transport_mode": "driving"
+                                  }
+                                ]
+                              }
+                            ]
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "additionalProperties": true
+        },
+        "rights": {
+          "type": "array",
+          "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+          "items": {
+            "title": "Rights Constraint",
+            "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+            "type": "object",
+            "properties": {
+              "rights_id": {
+                "type": "string",
+                "description": "Rights grant identifier from the acquire_rights response"
+              },
+              "rights_agent": {
+                "type": "object",
+                "description": "The agent that granted these rights",
+                "properties": {
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "MCP endpoint URL of the rights agent"
+                  },
+                  "id": {
+                    "type": "string",
+                    "description": "Agent identifier"
+                  }
+                },
+                "required": [
+                  "url",
+                  "id"
+                ]
+              },
+              "valid_from": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Start of the rights validity period"
+              },
+              "valid_until": {
+                "type": "string",
+                "format": "date-time",
+                "description": "End of the rights validity period. Creative should not be served after this time."
+              },
+              "uses": {
+                "type": "array",
+                "description": "Rights uses covered by this constraint",
+                "items": {
+                  "title": "Right Use",
+                  "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                  "type": "string",
+                  "enum": [
+                    "likeness",
+                    "voice",
+                    "name",
+                    "endorsement",
+                    "motion_capture",
+                    "signature",
+                    "catchphrase",
+                    "sync",
+                    "background_music",
+                    "editorial",
+                    "commercial"
+                  ],
+                  "enumDescriptions": {
+                    "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                    "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                    "name": "Use of a person's name in advertising or promotional materials",
+                    "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                    "motion_capture": "Use of a person's movement patterns for animation or video",
+                    "signature": "Use of a person's signature or autograph",
+                    "catchphrase": "Use of a person's well-known phrases or sayings",
+                    "sync": "Synchronization of music with visual media (ads, video)",
+                    "background_music": "Use of music as background audio in advertising",
+                    "editorial": "Use in editorial or informational contexts",
+                    "commercial": "Use in commercial advertising and promotional contexts"
+                  }
+                },
+                "minItems": 1
+              },
+              "countries": {
+                "type": "array",
+                "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "excluded_countries": {
+                "type": "array",
+                "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "impression_cap": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+              },
+              "right_type": {
+                "title": "Right Type",
+                "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                "type": "string",
+                "enum": [
+                  "talent",
+                  "character",
+                  "brand_ip",
+                  "music",
+                  "stock_media"
+                ],
+                "enumDescriptions": {
+                  "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                  "character": "Rights to fictional characters for advertising or co-branding",
+                  "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                  "music": "Rights to musical compositions or recordings (sync, background music)",
+                  "stock_media": "Rights to stock photography, video, or audio collections"
+                }
+              },
+              "approval_status": {
+                "type": "string",
+                "enum": [
+                  "pending",
+                  "approved",
+                  "rejected"
+                ],
+                "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+              },
+              "verification_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "rights_id",
+              "rights_agent",
+              "uses"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "industry_identifiers": {
+          "type": "array",
+          "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+          "items": {
+            "title": "Industry Identifier",
+            "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+            "type": "object",
+            "properties": {
+              "type": {
+                "title": "Creative Identifier Type",
+                "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                "type": "string",
+                "enum": [
+                  "ad_id",
+                  "isci",
+                  "clearcast_clock"
+                ],
+                "enumDescriptions": {
+                  "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                  "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                  "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                },
+                "examples": [
+                  "ad_id",
+                  "isci",
+                  "clearcast_clock"
+                ]
+              },
+              "value": {
+                "type": "string",
+                "maxLength": 64,
+                "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": true
+          },
+          "uniqueItems": true
+        },
+        "provenance": {
+          "title": "Provenance",
+          "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+          "type": "object",
+          "properties": {
+            "digital_source_type": {
+              "title": "Digital Source Type",
+              "description": "IPTC-aligned classification of AI involvement in producing this content",
+              "type": "string",
+              "enum": [
+                "digital_capture",
+                "digital_creation",
+                "trained_algorithmic_media",
+                "composite_with_trained_algorithmic_media",
+                "algorithmic_media",
+                "composite_capture",
+                "composite_synthetic",
+                "human_edits",
+                "data_driven_media"
+              ],
+              "enumDescriptions": {
+                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                "composite_capture": "Multiple digital captures composited together without AI",
+                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+              }
+            },
+            "ai_tool": {
+              "type": "object",
+              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                },
+                "version": {
+                  "type": "string",
+                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                },
+                "provider": {
+                  "type": "string",
+                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                }
+              },
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
+            },
+            "human_oversight": {
+              "type": "string",
+              "description": "Level of human involvement in the AI-assisted creation process",
+              "enum": [
+                "none",
+                "prompt_only",
+                "selected",
+                "edited",
+                "directed"
+              ],
+              "enumDescriptions": {
+                "none": "Fully automated with no human involvement in generation",
+                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                "selected": "Human selected from multiple AI-generated candidates",
+                "edited": "Human edited or refined AI-generated output",
+                "directed": "Human directed the creative process with AI as an assistive tool"
+              }
+            },
+            "declared_by": {
+              "type": "object",
+              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent or service that declared this provenance"
+                },
+                "role": {
+                  "type": "string",
+                  "enum": [
+                    "creator",
+                    "advertiser",
+                    "agency",
+                    "platform",
+                    "tool"
+                  ],
+                  "description": "Role of the declaring party in the supply chain",
+                  "enumDescriptions": {
+                    "creator": "The party that created or generated the content",
+                    "advertiser": "The brand or advertiser that owns the content",
+                    "agency": "Agency acting on behalf of the advertiser",
+                    "platform": "Ad platform or publisher that processed the content",
+                    "tool": "Automated tool or service that attached provenance metadata"
+                  }
+                }
+              },
+              "required": [
+                "role"
+              ],
+              "additionalProperties": true
+            },
+            "declared_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+            },
+            "created_time": {
+              "type": "string",
+              "format": "date-time",
+              "description": "When this content was created or generated (ISO 8601)"
+            },
+            "c2pa": {
+              "type": "object",
+              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+              "properties": {
+                "manifest_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL to the C2PA manifest store for this content"
+                }
+              },
+              "required": [
+                "manifest_url"
+              ],
+              "additionalProperties": true
+            },
+            "disclosure": {
+              "type": "object",
+              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+              "properties": {
+                "required": {
+                  "type": "boolean",
+                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                },
+                "jurisdictions": {
+                  "type": "array",
+                  "description": "Jurisdictions where disclosure obligations apply",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "country": {
+                        "type": "string",
+                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                      },
+                      "region": {
+                        "type": "string",
+                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                      },
+                      "regulation": {
+                        "type": "string",
+                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                      },
+                      "label_text": {
+                        "type": "string",
+                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                      },
+                      "render_guidance": {
+                        "type": "object",
+                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                        "minProperties": 1,
+                        "properties": {
+                          "persistence": {
+                            "title": "Disclosure Persistence",
+                            "description": "How long the disclosure must persist during content playback or display",
+                            "type": "string",
+                            "enum": [
+                              "continuous",
+                              "initial",
+                              "flexible"
+                            ],
+                            "enumDescriptions": {
+                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                            }
+                          },
+                          "min_duration_ms": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                          },
+                          "positions": {
+                            "type": "array",
+                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                            "items": {
+                              "title": "Disclosure Position",
+                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                              "type": "string",
+                              "enum": [
+                                "prominent",
+                                "footer",
+                                "audio",
+                                "subtitle",
+                                "overlay",
+                                "end_card",
+                                "pre_roll",
+                                "companion"
+                              ]
+                            },
+                            "minItems": 1,
+                            "uniqueItems": true
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "country",
+                      "regulation"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "required"
+              ],
+              "additionalProperties": true
+            },
+            "verification": {
+              "type": "array",
+              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+              "minItems": 1,
+              "items": {
+                "type": "object",
+                "properties": {
+                  "verified_by": {
+                    "type": "string",
+                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                  },
+                  "verified_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the verification was performed (ISO 8601)"
+                  },
+                  "result": {
+                    "type": "string",
+                    "enum": [
+                      "authentic",
+                      "ai_generated",
+                      "ai_modified",
+                      "inconclusive"
+                    ],
+                    "description": "Verification outcome"
+                  },
+                  "confidence": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                  },
+                  "details_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL to the full verification report"
+                  }
+                },
+                "required": [
+                  "verified_by",
+                  "result"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "format_id",
+        "assets"
+      ],
+      "additionalProperties": true
+    },
+    "creative_id": {
+      "type": "string",
+      "description": "Reference to a creative in the agent's library. The creative agent resolves this to a manifest from its library. Use this instead of creative_manifest when retrieving an existing creative for tag generation or format adaptation."
+    },
+    "concept_id": {
+      "type": "string",
+      "description": "Creative concept containing the creative. Creative agents SHOULD assign globally unique creative_id values; when they cannot guarantee uniqueness, concept_id is REQUIRED to disambiguate."
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "Media buy identifier for tag generation context. When the creative agent is also the ad server, this provides the trafficking context needed to generate placement-specific tags (e.g., CM360 placement ID). Not needed when tags are generated at the creative level (most creative platforms)."
+    },
+    "package_id": {
+      "type": "string",
+      "description": "Package identifier within the media buy. Used with media_buy_id when the creative agent needs line-item-level context for tag generation. Omit to get a tag not scoped to a specific package."
+    },
+    "target_format_id": {
+      "title": "Format ID",
+      "description": "Single format ID to generate. Mutually exclusive with target_format_ids. The format definition specifies required input assets and output structure.",
+      "type": "object",
+      "properties": {
+        "agent_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        },
+        "id": {
+          "type": "string",
+          "pattern": "^[a-zA-Z0-9_-]+$",
+          "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+        },
+        "width": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+        },
+        "height": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+        },
+        "duration_ms": {
+          "type": "number",
+          "minimum": 1,
+          "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+        }
+      },
+      "required": [
+        "agent_url",
+        "id"
+      ],
+      "additionalProperties": true,
+      "dependencies": {
+        "width": [
+          "height"
+        ],
+        "height": [
+          "width"
+        ]
+      }
+    },
+    "target_format_ids": {
+      "type": "array",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1,
+      "description": "Array of format IDs to generate in a single call. Mutually exclusive with target_format_id. The creative agent produces one manifest per format. Each format definition specifies its own required input assets and output structure."
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account reference for pricing and billing. When present, the creative agent applies account-specific pricing from the rate card, records the build against the account for billing, and can enforce account-level quotas or entitlements. Required by creative agents that charge for their services.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "brand": {
+      "title": "Brand Reference",
+      "description": "Brand reference for creative generation. Resolved to full brand identity (colors, logos, tone) at execution time.",
+      "type": "object",
+      "properties": {
+        "domain": {
+          "type": "string",
+          "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
+        "brand_id": {
+          "title": "Brand ID",
+          "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+          "type": "string",
+          "pattern": "^[a-z0-9_]+$",
+          "examples": [
+            "tide",
+            "cheerios",
+            "air_jordan",
+            "nike",
+            "pampers"
+          ]
+        }
+      },
+      "required": [
+        "domain"
+      ],
+      "additionalProperties": false,
+      "examples": [
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "spark"
+        },
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "glow"
+        },
+        {
+          "domain": "acme-corp.com"
+        }
+      ]
+    },
+    "quality": {
+      "title": "Creative Quality",
+      "description": "Quality tier for generation. 'draft' produces fast, lower-fidelity output for iteration and review. 'production' produces full-quality output for final delivery. If omitted, the creative agent uses its own default. For non-generative transforms (e.g., format resizing), creative agents MAY ignore this field.",
+      "type": "string",
+      "enum": [
+        "draft",
+        "production"
+      ],
+      "enumDescriptions": {
+        "draft": "Fast, lower-fidelity output for iteration and review",
+        "production": "Full-quality output for final delivery"
+      }
+    },
+    "item_limit": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum number of catalog items to use when generating. When a catalog asset contains more items than this limit, the creative agent selects the top items based on relevance or catalog ordering. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets."
+    },
+    "include_preview": {
+      "type": "boolean",
+      "description": "When true, requests the creative agent to include preview renders in the response alongside the manifest. Agents that support this return a 'preview' object in the response using the same structure as preview_creative. Agents that do not support inline preview simply omit the field. This avoids a separate preview_creative round trip for platforms that generate previews as a byproduct of building."
+    },
+    "preview_inputs": {
+      "type": "array",
+      "description": "Input sets for preview generation when include_preview is true. Each input set defines macros and context values for one preview variant. If include_preview is true but this is omitted, the agent generates a single default preview. Only supported with target_format_id (single-format requests). Ignored when using target_format_ids \u2014 multi-format requests generate one default preview per format. Ignored when include_preview is false or omitted.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad')"
+          },
+          "macros": {
+            "type": "object",
+            "description": "Macro values to use for this preview variant",
+            "additionalProperties": {
+              "type": "string"
+            }
+          },
+          "context_description": {
+            "type": "string",
+            "description": "Natural language description of the context for AI-generated content"
+          }
+        },
+        "required": [
+          "name"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "preview_quality": {
+      "title": "Creative Quality",
+      "description": "Render quality for inline preview when include_preview is true. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Independent of the build quality parameter \u2014 you can build at draft quality and preview at production quality, or vice versa. If omitted, the creative agent uses its own default. Ignored when include_preview is false or omitted.",
+      "type": "string",
+      "enum": [
+        "draft",
+        "production"
+      ],
+      "enumDescriptions": {
+        "draft": "Fast, lower-fidelity output for iteration and review",
+        "production": "Full-quality output for final delivery"
+      }
+    },
+    "preview_output_format": {
+      "title": "Preview Output Format",
+      "description": "Output format for preview renders when include_preview is true. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). Ignored when include_preview is false or omitted.",
+      "type": "string",
+      "enum": [
+        "url",
+        "html"
+      ],
+      "default": "url"
+    },
+    "macro_values": {
+      "type": "object",
+      "description": "Macro values to pre-substitute into the output manifest's assets. Keys are universal macro names (e.g., CLICK_URL, CACHEBUSTER); values are the substitution strings. The creative agent translates universal macros to its platform's native syntax. Substitution is literal \u2014 all occurrences of each macro in output assets are replaced with the provided value. The caller is responsible for URL-encoding values if the output context requires it. Macros not provided here remain as {MACRO} placeholders for the sales agent to resolve at serve time. Creative agents MUST ignore keys they do not recognize \u2014 unknown macro names are not an error.",
+      "additionalProperties": {
+        "type": "string"
+      }
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate creative generation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.324Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/build-creative-response.json b/schemas/cache/bundled/media-buy/build-creative-response.json
new file mode 100644
index 000000000..107958acf
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/build-creative-response.json
@@ -0,0 +1,13279 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Build Creative Response",
+  "description": "Response containing the transformed or generated creative manifest(s), ready for use with preview_creative or sync_creatives. Returns either a single creative_manifest, an array of creative_manifests (for multi-format requests), or error information.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "BuildCreativeSuccess",
+      "description": "Single-format success response. Returned when the request used target_format_id.",
+      "type": "object",
+      "properties": {
+        "creative_manifest": {
+          "title": "Creative Manifest",
+          "description": "The generated or transformed creative manifest",
+          "type": "object",
+          "properties": {
+            "format_id": {
+              "title": "Format ID",
+              "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            },
+            "assets": {
+              "type": "object",
+              "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+              "patternProperties": {
+                "^[a-z0-9_]+$": {
+                  "anyOf": [
+                    {
+                      "title": "Image Asset",
+                      "description": "Image asset with URL and dimensions",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the image asset"
+                        },
+                        "width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Width in pixels"
+                        },
+                        "height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Height in pixels"
+                        },
+                        "format": {
+                          "type": "string",
+                          "description": "Image file format (jpg, png, gif, webp, etc.)"
+                        },
+                        "alt_text": {
+                          "type": "string",
+                          "description": "Alternative text for accessibility",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "width",
+                        "height"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Video Asset",
+                      "description": "Video asset with URL and technical specifications including audio track properties",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the video asset"
+                        },
+                        "width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Width in pixels"
+                        },
+                        "height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Height in pixels"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Video duration in milliseconds",
+                          "minimum": 1
+                        },
+                        "file_size_bytes": {
+                          "type": "integer",
+                          "description": "File size in bytes",
+                          "minimum": 1
+                        },
+                        "container_format": {
+                          "type": "string",
+                          "description": "Video container format (mp4, webm, mov, etc.)"
+                        },
+                        "video_codec": {
+                          "type": "string",
+                          "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                        },
+                        "video_bitrate_kbps": {
+                          "type": "integer",
+                          "description": "Video stream bitrate in kilobits per second",
+                          "minimum": 1
+                        },
+                        "frame_rate": {
+                          "type": "string",
+                          "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                        },
+                        "frame_rate_type": {
+                          "type": "string",
+                          "enum": [
+                            "constant",
+                            "variable"
+                          ],
+                          "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                        },
+                        "scan_type": {
+                          "type": "string",
+                          "enum": [
+                            "progressive",
+                            "interlaced"
+                          ],
+                          "description": "Scan type of the video"
+                        },
+                        "color_space": {
+                          "type": "string",
+                          "enum": [
+                            "rec709",
+                            "rec2020",
+                            "rec2100",
+                            "srgb",
+                            "dci_p3"
+                          ],
+                          "description": "Color space of the video"
+                        },
+                        "hdr_format": {
+                          "type": "string",
+                          "enum": [
+                            "sdr",
+                            "hdr10",
+                            "hdr10_plus",
+                            "hlg",
+                            "dolby_vision"
+                          ],
+                          "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                        },
+                        "chroma_subsampling": {
+                          "type": "string",
+                          "enum": [
+                            "4:2:0",
+                            "4:2:2",
+                            "4:4:4"
+                          ],
+                          "description": "Chroma subsampling format"
+                        },
+                        "video_bit_depth": {
+                          "type": "integer",
+                          "enum": [
+                            8,
+                            10,
+                            12
+                          ],
+                          "description": "Video bit depth"
+                        },
+                        "gop_interval_seconds": {
+                          "type": "number",
+                          "description": "GOP/keyframe interval in seconds"
+                        },
+                        "gop_type": {
+                          "type": "string",
+                          "enum": [
+                            "closed",
+                            "open"
+                          ],
+                          "description": "GOP structure type"
+                        },
+                        "moov_atom_position": {
+                          "type": "string",
+                          "enum": [
+                            "start",
+                            "end"
+                          ],
+                          "description": "Position of moov atom in MP4 container"
+                        },
+                        "has_audio": {
+                          "type": "boolean",
+                          "description": "Whether the video contains an audio track"
+                        },
+                        "audio_codec": {
+                          "type": "string",
+                          "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                        },
+                        "audio_sampling_rate_hz": {
+                          "type": "integer",
+                          "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                        },
+                        "audio_channels": {
+                          "type": "string",
+                          "enum": [
+                            "mono",
+                            "stereo",
+                            "5.1",
+                            "7.1"
+                          ],
+                          "description": "Audio channel configuration"
+                        },
+                        "audio_bit_depth": {
+                          "type": "integer",
+                          "enum": [
+                            16,
+                            24,
+                            32
+                          ],
+                          "description": "Audio bit depth"
+                        },
+                        "audio_bitrate_kbps": {
+                          "type": "integer",
+                          "description": "Audio bitrate in kilobits per second",
+                          "minimum": 1
+                        },
+                        "audio_loudness_lufs": {
+                          "type": "number",
+                          "description": "Integrated loudness in LUFS"
+                        },
+                        "audio_true_peak_dbfs": {
+                          "type": "number",
+                          "description": "True peak level in dBFS"
+                        },
+                        "captions_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to captions file (WebVTT, SRT, etc.)",
+                          "x-accessibility": true
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the video content",
+                          "x-accessibility": true
+                        },
+                        "audio_description_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to audio description track for visually impaired users",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "width",
+                        "height"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Audio Asset",
+                      "description": "Audio asset with URL and technical specifications",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the audio asset"
+                        },
+                        "duration_ms": {
+                          "type": "integer",
+                          "description": "Audio duration in milliseconds",
+                          "minimum": 0
+                        },
+                        "file_size_bytes": {
+                          "type": "integer",
+                          "description": "File size in bytes",
+                          "minimum": 1
+                        },
+                        "container_format": {
+                          "type": "string",
+                          "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                        },
+                        "codec": {
+                          "type": "string",
+                          "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                        },
+                        "sampling_rate_hz": {
+                          "type": "integer",
+                          "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                        },
+                        "channels": {
+                          "type": "string",
+                          "enum": [
+                            "mono",
+                            "stereo",
+                            "5.1",
+                            "7.1"
+                          ],
+                          "description": "Channel configuration"
+                        },
+                        "bit_depth": {
+                          "type": "integer",
+                          "enum": [
+                            16,
+                            24,
+                            32
+                          ],
+                          "description": "Bit depth"
+                        },
+                        "bitrate_kbps": {
+                          "type": "integer",
+                          "description": "Bitrate in kilobits per second",
+                          "minimum": 1
+                        },
+                        "loudness_lufs": {
+                          "type": "number",
+                          "description": "Integrated loudness in LUFS"
+                        },
+                        "true_peak_dbfs": {
+                          "type": "number",
+                          "description": "True peak level in dBFS"
+                        },
+                        "transcript_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to text transcript of the audio content",
+                          "x-accessibility": true
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "VAST Asset",
+                      "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "url",
+                              "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL endpoint that returns VAST XML"
+                            },
+                            "vast_version": {
+                              "title": "VAST Version",
+                              "description": "VAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "2.0",
+                                "3.0",
+                                "4.0",
+                                "4.1",
+                                "4.2"
+                              ]
+                            },
+                            "vpaid_enabled": {
+                              "type": "boolean",
+                              "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected video duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "VAST Tracking Event",
+                                "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "rewind",
+                                  "skip",
+                                  "playerExpand",
+                                  "playerCollapse",
+                                  "fullscreen",
+                                  "exitFullscreen",
+                                  "progress",
+                                  "notUsed",
+                                  "otherAdInteraction",
+                                  "interactiveStart",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "closeLinear",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this VAST tag"
+                            },
+                            "captions_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to captions file (WebVTT, SRT, etc.)",
+                              "x-accessibility": true
+                            },
+                            "audio_description_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to audio description track for visually impaired users",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "inline",
+                              "description": "Discriminator indicating VAST is delivered as inline XML content"
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Inline VAST XML content"
+                            },
+                            "vast_version": {
+                              "title": "VAST Version",
+                              "description": "VAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "2.0",
+                                "3.0",
+                                "4.0",
+                                "4.1",
+                                "4.2"
+                              ]
+                            },
+                            "vpaid_enabled": {
+                              "type": "boolean",
+                              "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected video duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "VAST Tracking Event",
+                                "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "rewind",
+                                  "skip",
+                                  "playerExpand",
+                                  "playerCollapse",
+                                  "fullscreen",
+                                  "exitFullscreen",
+                                  "progress",
+                                  "notUsed",
+                                  "otherAdInteraction",
+                                  "interactiveStart",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "closeLinear",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this VAST tag"
+                            },
+                            "captions_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to captions file (WebVTT, SRT, etc.)",
+                              "x-accessibility": true
+                            },
+                            "audio_description_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to audio description track for visually impaired users",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    {
+                      "title": "Text Asset",
+                      "description": "Text content asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "Text content"
+                        },
+                        "language": {
+                          "type": "string",
+                          "description": "Language code (e.g., 'en', 'es', 'fr')"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "URL Asset",
+                      "description": "URL reference asset",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL reference"
+                        },
+                        "url_type": {
+                          "title": "URL Asset Type",
+                          "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                          "type": "string",
+                          "enum": [
+                            "clickthrough",
+                            "tracker_pixel",
+                            "tracker_script"
+                          ]
+                        },
+                        "description": {
+                          "type": "string",
+                          "description": "Description of what this URL points to"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "HTML Asset",
+                      "description": "HTML content asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "HTML content"
+                        },
+                        "version": {
+                          "type": "string",
+                          "description": "HTML version (e.g., 'HTML5')"
+                        },
+                        "accessibility": {
+                          "type": "object",
+                          "description": "Self-declared accessibility properties for this opaque creative",
+                          "x-accessibility": true,
+                          "properties": {
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Text alternative describing the creative content"
+                            },
+                            "keyboard_navigable": {
+                              "type": "boolean",
+                              "description": "Whether the creative can be fully operated via keyboard"
+                            },
+                            "motion_control": {
+                              "type": "boolean",
+                              "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                            },
+                            "screen_reader_tested": {
+                              "type": "boolean",
+                              "description": "Whether the creative has been tested with screen readers"
+                            }
+                          }
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "JavaScript Asset",
+                      "description": "JavaScript code asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "JavaScript content"
+                        },
+                        "module_type": {
+                          "title": "JavaScript Module Type",
+                          "description": "JavaScript module type",
+                          "type": "string",
+                          "enum": [
+                            "esm",
+                            "commonjs",
+                            "script"
+                          ]
+                        },
+                        "accessibility": {
+                          "type": "object",
+                          "description": "Self-declared accessibility properties for this opaque creative",
+                          "x-accessibility": true,
+                          "properties": {
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Text alternative describing the creative content"
+                            },
+                            "keyboard_navigable": {
+                              "type": "boolean",
+                              "description": "Whether the creative can be fully operated via keyboard"
+                            },
+                            "motion_control": {
+                              "type": "boolean",
+                              "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                            },
+                            "screen_reader_tested": {
+                              "type": "boolean",
+                              "description": "Whether the creative has been tested with screen readers"
+                            }
+                          }
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Webhook Asset",
+                      "description": "Webhook for server-side dynamic content rendering (DCO)",
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Webhook URL to call for dynamic content"
+                        },
+                        "method": {
+                          "title": "HTTP Method",
+                          "description": "HTTP method",
+                          "type": "string",
+                          "enum": [
+                            "GET",
+                            "POST"
+                          ],
+                          "default": "POST"
+                        },
+                        "timeout_ms": {
+                          "type": "integer",
+                          "minimum": 10,
+                          "maximum": 5000,
+                          "default": 500,
+                          "description": "Maximum time to wait for response in milliseconds"
+                        },
+                        "supported_macros": {
+                          "type": "array",
+                          "items": {
+                            "oneOf": [
+                              {
+                                "title": "Universal Macro",
+                                "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                "type": "string",
+                                "enum": [
+                                  "MEDIA_BUY_ID",
+                                  "PACKAGE_ID",
+                                  "CREATIVE_ID",
+                                  "CACHEBUSTER",
+                                  "TIMESTAMP",
+                                  "CLICK_URL",
+                                  "GDPR",
+                                  "GDPR_CONSENT",
+                                  "US_PRIVACY",
+                                  "GPP_STRING",
+                                  "GPP_SID",
+                                  "IP_ADDRESS",
+                                  "LIMIT_AD_TRACKING",
+                                  "DEVICE_TYPE",
+                                  "OS",
+                                  "OS_VERSION",
+                                  "DEVICE_MAKE",
+                                  "DEVICE_MODEL",
+                                  "USER_AGENT",
+                                  "APP_BUNDLE",
+                                  "APP_NAME",
+                                  "COUNTRY",
+                                  "REGION",
+                                  "CITY",
+                                  "ZIP",
+                                  "DMA",
+                                  "LAT",
+                                  "LONG",
+                                  "DEVICE_ID",
+                                  "DEVICE_ID_TYPE",
+                                  "DOMAIN",
+                                  "PAGE_URL",
+                                  "REFERRER",
+                                  "KEYWORDS",
+                                  "PLACEMENT_ID",
+                                  "FOLD_POSITION",
+                                  "AD_WIDTH",
+                                  "AD_HEIGHT",
+                                  "VIDEO_ID",
+                                  "VIDEO_TITLE",
+                                  "VIDEO_DURATION",
+                                  "VIDEO_CATEGORY",
+                                  "CONTENT_GENRE",
+                                  "CONTENT_RATING",
+                                  "PLAYER_WIDTH",
+                                  "PLAYER_HEIGHT",
+                                  "POD_POSITION",
+                                  "POD_SIZE",
+                                  "AD_BREAK_ID",
+                                  "STATION_ID",
+                                  "COLLECTION_NAME",
+                                  "INSTALLMENT_ID",
+                                  "AUDIO_DURATION",
+                                  "TMPX",
+                                  "AXEM",
+                                  "CATALOG_ID",
+                                  "SKU",
+                                  "GTIN",
+                                  "OFFERING_ID",
+                                  "JOB_ID",
+                                  "HOTEL_ID",
+                                  "FLIGHT_ID",
+                                  "VEHICLE_ID",
+                                  "LISTING_ID",
+                                  "STORE_ID",
+                                  "PROGRAM_ID",
+                                  "DESTINATION_ID",
+                                  "CREATIVE_VARIANT_ID",
+                                  "APP_ITEM_ID"
+                                ],
+                                "enumDescriptions": {
+                                  "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                  "PACKAGE_ID": "AdCP package identifier",
+                                  "CREATIVE_ID": "AdCP creative identifier",
+                                  "CACHEBUSTER": "Random number to prevent caching",
+                                  "TIMESTAMP": "Unix timestamp in milliseconds",
+                                  "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                  "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                  "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                  "US_PRIVACY": "US Privacy (CCPA) string",
+                                  "GPP_STRING": "Global Privacy Platform consent string",
+                                  "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                  "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                  "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                  "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                  "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                  "OS_VERSION": "OS version number",
+                                  "DEVICE_MAKE": "Device manufacturer",
+                                  "DEVICE_MODEL": "Device model identifier",
+                                  "USER_AGENT": "Full user agent string",
+                                  "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                  "APP_NAME": "Human-readable app name",
+                                  "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                  "REGION": "State/province/region code",
+                                  "CITY": "City name",
+                                  "ZIP": "Postal code",
+                                  "DMA": "Nielsen DMA code (US TV markets)",
+                                  "LAT": "Latitude coordinate",
+                                  "LONG": "Longitude coordinate",
+                                  "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                  "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                  "DOMAIN": "Domain where ad is shown",
+                                  "PAGE_URL": "Full page URL (encoded)",
+                                  "REFERRER": "HTTP referrer URL",
+                                  "KEYWORDS": "Page keywords (comma-separated)",
+                                  "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                  "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                  "AD_WIDTH": "Ad slot width in pixels",
+                                  "AD_HEIGHT": "Ad slot height in pixels",
+                                  "VIDEO_ID": "Content video identifier",
+                                  "VIDEO_TITLE": "Content video title",
+                                  "VIDEO_DURATION": "Content duration in seconds",
+                                  "VIDEO_CATEGORY": "IAB content category",
+                                  "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                  "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                  "PLAYER_WIDTH": "Video player width in pixels",
+                                  "PLAYER_HEIGHT": "Video player height in pixels",
+                                  "POD_POSITION": "Position within ad break",
+                                  "POD_SIZE": "Total ads in the ad break",
+                                  "AD_BREAK_ID": "Unique ad break identifier",
+                                  "STATION_ID": "Radio station or podcast identifier",
+                                  "COLLECTION_NAME": "Program or collection name",
+                                  "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                  "AUDIO_DURATION": "Audio content duration in seconds",
+                                  "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                  "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                  "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                  "SKU": "Product SKU identifier for the catalog item being rendered",
+                                  "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                  "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                  "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                  "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                  "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                  "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                  "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                  "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                  "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                  "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                  "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                  "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                }
+                              },
+                              {
+                                "type": "string",
+                                "description": "Custom or publisher-specific macro name"
+                              }
+                            ]
+                          },
+                          "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                        },
+                        "required_macros": {
+                          "type": "array",
+                          "items": {
+                            "oneOf": [
+                              {
+                                "title": "Universal Macro",
+                                "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                "type": "string",
+                                "enum": [
+                                  "MEDIA_BUY_ID",
+                                  "PACKAGE_ID",
+                                  "CREATIVE_ID",
+                                  "CACHEBUSTER",
+                                  "TIMESTAMP",
+                                  "CLICK_URL",
+                                  "GDPR",
+                                  "GDPR_CONSENT",
+                                  "US_PRIVACY",
+                                  "GPP_STRING",
+                                  "GPP_SID",
+                                  "IP_ADDRESS",
+                                  "LIMIT_AD_TRACKING",
+                                  "DEVICE_TYPE",
+                                  "OS",
+                                  "OS_VERSION",
+                                  "DEVICE_MAKE",
+                                  "DEVICE_MODEL",
+                                  "USER_AGENT",
+                                  "APP_BUNDLE",
+                                  "APP_NAME",
+                                  "COUNTRY",
+                                  "REGION",
+                                  "CITY",
+                                  "ZIP",
+                                  "DMA",
+                                  "LAT",
+                                  "LONG",
+                                  "DEVICE_ID",
+                                  "DEVICE_ID_TYPE",
+                                  "DOMAIN",
+                                  "PAGE_URL",
+                                  "REFERRER",
+                                  "KEYWORDS",
+                                  "PLACEMENT_ID",
+                                  "FOLD_POSITION",
+                                  "AD_WIDTH",
+                                  "AD_HEIGHT",
+                                  "VIDEO_ID",
+                                  "VIDEO_TITLE",
+                                  "VIDEO_DURATION",
+                                  "VIDEO_CATEGORY",
+                                  "CONTENT_GENRE",
+                                  "CONTENT_RATING",
+                                  "PLAYER_WIDTH",
+                                  "PLAYER_HEIGHT",
+                                  "POD_POSITION",
+                                  "POD_SIZE",
+                                  "AD_BREAK_ID",
+                                  "STATION_ID",
+                                  "COLLECTION_NAME",
+                                  "INSTALLMENT_ID",
+                                  "AUDIO_DURATION",
+                                  "TMPX",
+                                  "AXEM",
+                                  "CATALOG_ID",
+                                  "SKU",
+                                  "GTIN",
+                                  "OFFERING_ID",
+                                  "JOB_ID",
+                                  "HOTEL_ID",
+                                  "FLIGHT_ID",
+                                  "VEHICLE_ID",
+                                  "LISTING_ID",
+                                  "STORE_ID",
+                                  "PROGRAM_ID",
+                                  "DESTINATION_ID",
+                                  "CREATIVE_VARIANT_ID",
+                                  "APP_ITEM_ID"
+                                ],
+                                "enumDescriptions": {
+                                  "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                  "PACKAGE_ID": "AdCP package identifier",
+                                  "CREATIVE_ID": "AdCP creative identifier",
+                                  "CACHEBUSTER": "Random number to prevent caching",
+                                  "TIMESTAMP": "Unix timestamp in milliseconds",
+                                  "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                  "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                  "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                  "US_PRIVACY": "US Privacy (CCPA) string",
+                                  "GPP_STRING": "Global Privacy Platform consent string",
+                                  "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                  "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                  "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                  "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                  "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                  "OS_VERSION": "OS version number",
+                                  "DEVICE_MAKE": "Device manufacturer",
+                                  "DEVICE_MODEL": "Device model identifier",
+                                  "USER_AGENT": "Full user agent string",
+                                  "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                  "APP_NAME": "Human-readable app name",
+                                  "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                  "REGION": "State/province/region code",
+                                  "CITY": "City name",
+                                  "ZIP": "Postal code",
+                                  "DMA": "Nielsen DMA code (US TV markets)",
+                                  "LAT": "Latitude coordinate",
+                                  "LONG": "Longitude coordinate",
+                                  "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                  "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                  "DOMAIN": "Domain where ad is shown",
+                                  "PAGE_URL": "Full page URL (encoded)",
+                                  "REFERRER": "HTTP referrer URL",
+                                  "KEYWORDS": "Page keywords (comma-separated)",
+                                  "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                  "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                  "AD_WIDTH": "Ad slot width in pixels",
+                                  "AD_HEIGHT": "Ad slot height in pixels",
+                                  "VIDEO_ID": "Content video identifier",
+                                  "VIDEO_TITLE": "Content video title",
+                                  "VIDEO_DURATION": "Content duration in seconds",
+                                  "VIDEO_CATEGORY": "IAB content category",
+                                  "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                  "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                  "PLAYER_WIDTH": "Video player width in pixels",
+                                  "PLAYER_HEIGHT": "Video player height in pixels",
+                                  "POD_POSITION": "Position within ad break",
+                                  "POD_SIZE": "Total ads in the ad break",
+                                  "AD_BREAK_ID": "Unique ad break identifier",
+                                  "STATION_ID": "Radio station or podcast identifier",
+                                  "COLLECTION_NAME": "Program or collection name",
+                                  "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                  "AUDIO_DURATION": "Audio content duration in seconds",
+                                  "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                  "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                  "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                  "SKU": "Product SKU identifier for the catalog item being rendered",
+                                  "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                  "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                  "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                  "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                  "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                  "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                  "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                  "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                  "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                  "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                  "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                  "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                }
+                              },
+                              {
+                                "type": "string",
+                                "description": "Custom or publisher-specific macro name"
+                              }
+                            ]
+                          },
+                          "description": "Universal macros that must be provided for webhook to function"
+                        },
+                        "response_type": {
+                          "title": "Webhook Response Type",
+                          "description": "Expected content type of webhook response",
+                          "type": "string",
+                          "enum": [
+                            "html",
+                            "json",
+                            "xml",
+                            "javascript"
+                          ]
+                        },
+                        "security": {
+                          "type": "object",
+                          "description": "Security configuration for webhook calls",
+                          "properties": {
+                            "method": {
+                              "title": "Webhook Security Method",
+                              "description": "Authentication method",
+                              "type": "string",
+                              "enum": [
+                                "hmac_sha256",
+                                "api_key",
+                                "none"
+                              ]
+                            },
+                            "hmac_header": {
+                              "type": "string",
+                              "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                            },
+                            "api_key_header": {
+                              "type": "string",
+                              "description": "Header name for API key (e.g., 'X-API-Key')"
+                            }
+                          },
+                          "required": [
+                            "method"
+                          ]
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "response_type",
+                        "security"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "CSS Asset",
+                      "description": "CSS stylesheet asset",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "CSS content"
+                        },
+                        "media": {
+                          "type": "string",
+                          "description": "CSS media query context (e.g., 'screen', 'print')"
+                        },
+                        "provenance": {
+                          "title": "Provenance",
+                          "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                          "type": "object",
+                          "properties": {
+                            "digital_source_type": {
+                              "title": "Digital Source Type",
+                              "description": "IPTC-aligned classification of AI involvement in producing this content",
+                              "type": "string",
+                              "enum": [
+                                "digital_capture",
+                                "digital_creation",
+                                "trained_algorithmic_media",
+                                "composite_with_trained_algorithmic_media",
+                                "algorithmic_media",
+                                "composite_capture",
+                                "composite_synthetic",
+                                "human_edits",
+                                "data_driven_media"
+                              ],
+                              "enumDescriptions": {
+                                "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                "composite_capture": "Multiple digital captures composited together without AI",
+                                "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                              }
+                            },
+                            "ai_tool": {
+                              "type": "object",
+                              "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                },
+                                "version": {
+                                  "type": "string",
+                                  "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                },
+                                "provider": {
+                                  "type": "string",
+                                  "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "human_oversight": {
+                              "type": "string",
+                              "description": "Level of human involvement in the AI-assisted creation process",
+                              "enum": [
+                                "none",
+                                "prompt_only",
+                                "selected",
+                                "edited",
+                                "directed"
+                              ],
+                              "enumDescriptions": {
+                                "none": "Fully automated with no human involvement in generation",
+                                "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                "selected": "Human selected from multiple AI-generated candidates",
+                                "edited": "Human edited or refined AI-generated output",
+                                "directed": "Human directed the creative process with AI as an assistive tool"
+                              }
+                            },
+                            "declared_by": {
+                              "type": "object",
+                              "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                              "properties": {
+                                "agent_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL of the agent or service that declared this provenance"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "creator",
+                                    "advertiser",
+                                    "agency",
+                                    "platform",
+                                    "tool"
+                                  ],
+                                  "description": "Role of the declaring party in the supply chain",
+                                  "enumDescriptions": {
+                                    "creator": "The party that created or generated the content",
+                                    "advertiser": "The brand or advertiser that owns the content",
+                                    "agency": "Agency acting on behalf of the advertiser",
+                                    "platform": "Ad platform or publisher that processed the content",
+                                    "tool": "Automated tool or service that attached provenance metadata"
+                                  }
+                                }
+                              },
+                              "required": [
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "declared_at": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                            },
+                            "created_time": {
+                              "type": "string",
+                              "format": "date-time",
+                              "description": "When this content was created or generated (ISO 8601)"
+                            },
+                            "c2pa": {
+                              "type": "object",
+                              "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                              "properties": {
+                                "manifest_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the C2PA manifest store for this content"
+                                }
+                              },
+                              "required": [
+                                "manifest_url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "disclosure": {
+                              "type": "object",
+                              "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                              "properties": {
+                                "required": {
+                                  "type": "boolean",
+                                  "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                },
+                                "jurisdictions": {
+                                  "type": "array",
+                                  "description": "Jurisdictions where disclosure obligations apply",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "country": {
+                                        "type": "string",
+                                        "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                      },
+                                      "region": {
+                                        "type": "string",
+                                        "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                      },
+                                      "label_text": {
+                                        "type": "string",
+                                        "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                      },
+                                      "render_guidance": {
+                                        "type": "object",
+                                        "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                        "minProperties": 1,
+                                        "properties": {
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                          },
+                                          "positions": {
+                                            "type": "array",
+                                            "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                            "items": {
+                                              "title": "Disclosure Position",
+                                              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                              "type": "string",
+                                              "enum": [
+                                                "prominent",
+                                                "footer",
+                                                "audio",
+                                                "subtitle",
+                                                "overlay",
+                                                "end_card",
+                                                "pre_roll",
+                                                "companion"
+                                              ]
+                                            },
+                                            "minItems": 1,
+                                            "uniqueItems": true
+                                          },
+                                          "ext": {
+                                            "title": "Extension Object",
+                                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                            "type": "object",
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "required": [
+                                      "country",
+                                      "regulation"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "required"
+                              ],
+                              "additionalProperties": true
+                            },
+                            "verification": {
+                              "type": "array",
+                              "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                              "minItems": 1,
+                              "items": {
+                                "type": "object",
+                                "properties": {
+                                  "verified_by": {
+                                    "type": "string",
+                                    "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                  },
+                                  "verified_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When the verification was performed (ISO 8601)"
+                                  },
+                                  "result": {
+                                    "type": "string",
+                                    "enum": [
+                                      "authentic",
+                                      "ai_generated",
+                                      "ai_modified",
+                                      "inconclusive"
+                                    ],
+                                    "description": "Verification outcome"
+                                  },
+                                  "confidence": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "maximum": 1,
+                                    "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                  },
+                                  "details_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the full verification report"
+                                  }
+                                },
+                                "required": [
+                                  "verified_by",
+                                  "result"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "DAAST Asset",
+                      "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "url",
+                              "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL endpoint that returns DAAST XML"
+                            },
+                            "daast_version": {
+                              "title": "DAAST Version",
+                              "description": "DAAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "1.0",
+                                "1.1"
+                              ]
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected audio duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "DAAST Tracking Event",
+                                "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "skip",
+                                  "progress",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this DAAST tag"
+                            },
+                            "companion_ads": {
+                              "type": "boolean",
+                              "description": "Whether companion display ads are included"
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the audio content",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "properties": {
+                            "delivery_type": {
+                              "type": "string",
+                              "const": "inline",
+                              "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                            },
+                            "content": {
+                              "type": "string",
+                              "description": "Inline DAAST XML content"
+                            },
+                            "daast_version": {
+                              "title": "DAAST Version",
+                              "description": "DAAST specification version",
+                              "type": "string",
+                              "enum": [
+                                "1.0",
+                                "1.1"
+                              ]
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Expected audio duration in milliseconds (if known)",
+                              "minimum": 0
+                            },
+                            "tracking_events": {
+                              "type": "array",
+                              "items": {
+                                "title": "DAAST Tracking Event",
+                                "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                "type": "string",
+                                "enum": [
+                                  "impression",
+                                  "creativeView",
+                                  "loaded",
+                                  "start",
+                                  "firstQuartile",
+                                  "midpoint",
+                                  "thirdQuartile",
+                                  "complete",
+                                  "mute",
+                                  "unmute",
+                                  "pause",
+                                  "resume",
+                                  "skip",
+                                  "progress",
+                                  "clickTracking",
+                                  "customClick",
+                                  "close",
+                                  "error",
+                                  "viewable",
+                                  "notViewable",
+                                  "viewUndetermined",
+                                  "measurableImpression",
+                                  "viewableImpression"
+                                ]
+                              },
+                              "description": "Tracking events supported by this DAAST tag"
+                            },
+                            "companion_ads": {
+                              "type": "boolean",
+                              "description": "Whether companion display ads are included"
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the audio content",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "delivery_type",
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    {
+                      "title": "Markdown Asset",
+                      "description": "Markdown-formatted text content following CommonMark specification",
+                      "type": "object",
+                      "properties": {
+                        "content": {
+                          "type": "string",
+                          "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                        },
+                        "language": {
+                          "type": "string",
+                          "description": "Language code (e.g., 'en', 'es', 'fr')"
+                        },
+                        "markdown_flavor": {
+                          "title": "Markdown Flavor",
+                          "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                          "type": "string",
+                          "enum": [
+                            "commonmark",
+                            "gfm"
+                          ],
+                          "default": "commonmark"
+                        },
+                        "allow_raw_html": {
+                          "type": "boolean",
+                          "default": false,
+                          "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                        }
+                      },
+                      "required": [
+                        "content"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "Brief Asset",
+                      "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                      "allOf": [
+                        {
+                          "title": "Creative Brief",
+                          "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                          "type": "object",
+                          "properties": {
+                            "name": {
+                              "type": "string",
+                              "description": "Campaign or flight name for identification"
+                            },
+                            "objective": {
+                              "type": "string",
+                              "enum": [
+                                "awareness",
+                                "consideration",
+                                "conversion",
+                                "retention",
+                                "engagement"
+                              ],
+                              "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                            },
+                            "tone": {
+                              "type": "string",
+                              "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                            },
+                            "audience": {
+                              "type": "string",
+                              "description": "Target audience description for this campaign"
+                            },
+                            "territory": {
+                              "type": "string",
+                              "description": "Creative territory or positioning the campaign should occupy"
+                            },
+                            "messaging": {
+                              "type": "object",
+                              "description": "Messaging framework for the campaign",
+                              "properties": {
+                                "headline": {
+                                  "type": "string",
+                                  "description": "Primary headline"
+                                },
+                                "tagline": {
+                                  "type": "string",
+                                  "description": "Supporting tagline or sub-headline"
+                                },
+                                "cta": {
+                                  "type": "string",
+                                  "description": "Call-to-action text"
+                                },
+                                "key_messages": {
+                                  "type": "array",
+                                  "description": "Key messages to communicate in priority order",
+                                  "items": {
+                                    "type": "string"
+                                  }
+                                }
+                              },
+                              "additionalProperties": true
+                            },
+                            "reference_assets": {
+                              "type": "array",
+                              "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                              "items": {
+                                "title": "Reference Asset",
+                                "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                "type": "object",
+                                "properties": {
+                                  "url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the reference asset (image, video, or document)"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "style_reference",
+                                      "product_shot",
+                                      "mood_board",
+                                      "example_creative",
+                                      "logo",
+                                      "strategy_doc",
+                                      "storyboard"
+                                    ],
+                                    "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                  },
+                                  "description": {
+                                    "type": "string",
+                                    "description": "Human-readable description of the asset and how it should inform creative generation"
+                                  }
+                                },
+                                "required": [
+                                  "url",
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "compliance": {
+                              "type": "object",
+                              "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                              "properties": {
+                                "required_disclosures": {
+                                  "type": "array",
+                                  "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "text": {
+                                        "type": "string",
+                                        "description": "The disclosure text that must appear in the creative"
+                                      },
+                                      "position": {
+                                        "title": "Disclosure Position",
+                                        "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                        "type": "string",
+                                        "enum": [
+                                          "prominent",
+                                          "footer",
+                                          "audio",
+                                          "subtitle",
+                                          "overlay",
+                                          "end_card",
+                                          "pre_roll",
+                                          "companion"
+                                        ]
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                        "items": {
+                                          "type": "string",
+                                          "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                        },
+                                        "minItems": 1
+                                      },
+                                      "regulation": {
+                                        "type": "string",
+                                        "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                      },
+                                      "language": {
+                                        "type": "string",
+                                        "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                      },
+                                      "persistence": {
+                                        "title": "Disclosure Persistence",
+                                        "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                        "type": "string",
+                                        "enum": [
+                                          "continuous",
+                                          "initial",
+                                          "flexible"
+                                        ],
+                                        "enumDescriptions": {
+                                          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "text"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "minItems": 1
+                                },
+                                "prohibited_claims": {
+                                  "type": "array",
+                                  "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "name"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    {
+                      "title": "Catalog Asset",
+                      "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                      "allOf": [
+                        {
+                          "title": "Catalog",
+                          "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                          "type": "object",
+                          "properties": {
+                            "catalog_id": {
+                              "type": "string",
+                              "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                            },
+                            "name": {
+                              "type": "string",
+                              "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                            },
+                            "type": {
+                              "title": "Catalog Type",
+                              "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                              "type": "string",
+                              "enum": [
+                                "offering",
+                                "product",
+                                "inventory",
+                                "store",
+                                "promotion",
+                                "hotel",
+                                "flight",
+                                "job",
+                                "vehicle",
+                                "real_estate",
+                                "education",
+                                "destination",
+                                "app"
+                              ]
+                            },
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                            },
+                            "feed_format": {
+                              "title": "Feed Format",
+                              "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                              "type": "string",
+                              "enum": [
+                                "google_merchant_center",
+                                "facebook_catalog",
+                                "shopify",
+                                "linkedin_jobs",
+                                "custom"
+                              ]
+                            },
+                            "update_frequency": {
+                              "title": "Update Frequency",
+                              "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                              "type": "string",
+                              "enum": [
+                                "realtime",
+                                "hourly",
+                                "daily",
+                                "weekly"
+                              ]
+                            },
+                            "items": {
+                              "type": "array",
+                              "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                              "items": {
+                                "type": "object"
+                              },
+                              "minItems": 1
+                            },
+                            "ids": {
+                              "type": "array",
+                              "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                              "items": {
+                                "type": "string"
+                              },
+                              "minItems": 1
+                            },
+                            "gtins": {
+                              "type": "array",
+                              "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                              "items": {
+                                "type": "string",
+                                "pattern": "^[0-9]{8,14}$"
+                              },
+                              "minItems": 1
+                            },
+                            "tags": {
+                              "type": "array",
+                              "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                              "items": {
+                                "type": "string"
+                              },
+                              "minItems": 1
+                            },
+                            "category": {
+                              "type": "string",
+                              "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                            },
+                            "query": {
+                              "type": "string",
+                              "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                            },
+                            "conversion_events": {
+                              "type": "array",
+                              "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                              "items": {
+                                "title": "Event Type",
+                                "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                "type": "string",
+                                "enum": [
+                                  "page_view",
+                                  "view_content",
+                                  "select_content",
+                                  "select_item",
+                                  "search",
+                                  "share",
+                                  "add_to_cart",
+                                  "remove_from_cart",
+                                  "viewed_cart",
+                                  "add_to_wishlist",
+                                  "initiate_checkout",
+                                  "add_payment_info",
+                                  "purchase",
+                                  "refund",
+                                  "lead",
+                                  "qualify_lead",
+                                  "close_convert_lead",
+                                  "disqualify_lead",
+                                  "complete_registration",
+                                  "subscribe",
+                                  "start_trial",
+                                  "app_install",
+                                  "app_launch",
+                                  "contact",
+                                  "schedule",
+                                  "donate",
+                                  "submit_application",
+                                  "custom"
+                                ],
+                                "enumDescriptions": {
+                                  "page_view": "User viewed a page",
+                                  "view_content": "User viewed specific content (product, article, etc.)",
+                                  "select_content": "User selected or clicked on content (article, video, etc.)",
+                                  "select_item": "User selected a specific product or item from a list",
+                                  "search": "User performed a search",
+                                  "share": "User shared content via social or messaging",
+                                  "add_to_cart": "User added an item to cart",
+                                  "remove_from_cart": "User removed an item from cart",
+                                  "viewed_cart": "User viewed their shopping cart",
+                                  "add_to_wishlist": "User added an item to a wishlist",
+                                  "initiate_checkout": "User started checkout process",
+                                  "add_payment_info": "User added payment information",
+                                  "purchase": "User completed a purchase",
+                                  "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                  "lead": "User expressed interest (form submission, signup, etc.)",
+                                  "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                  "close_convert_lead": "Lead converted to a customer or closed deal",
+                                  "disqualify_lead": "Lead disqualified or marked as not viable",
+                                  "complete_registration": "User completed account registration",
+                                  "subscribe": "User subscribed to a service or newsletter",
+                                  "start_trial": "User started a free trial",
+                                  "app_install": "User installed an application",
+                                  "app_launch": "User launched an application",
+                                  "contact": "User initiated contact (call, message, etc.)",
+                                  "schedule": "User scheduled an appointment or event",
+                                  "donate": "User made a donation",
+                                  "submit_application": "User submitted an application (loan, job, etc.)",
+                                  "custom": "Custom event type (specify in custom_event_name)"
+                                }
+                              },
+                              "minItems": 1,
+                              "uniqueItems": true
+                            },
+                            "content_id_type": {
+                              "title": "Content ID Type",
+                              "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                              "type": "string",
+                              "enum": [
+                                "sku",
+                                "gtin",
+                                "offering_id",
+                                "job_id",
+                                "hotel_id",
+                                "flight_id",
+                                "vehicle_id",
+                                "listing_id",
+                                "store_id",
+                                "program_id",
+                                "destination_id",
+                                "app_id"
+                              ]
+                            },
+                            "feed_field_mappings": {
+                              "type": "array",
+                              "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                              "items": {
+                                "title": "Catalog Field Mapping",
+                                "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                "type": "object",
+                                "properties": {
+                                  "feed_field": {
+                                    "type": "string",
+                                    "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                  },
+                                  "catalog_field": {
+                                    "type": "string",
+                                    "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                  },
+                                  "asset_group_id": {
+                                    "type": "string",
+                                    "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                  },
+                                  "value": {
+                                    "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                  },
+                                  "transform": {
+                                    "type": "string",
+                                    "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                    "enum": [
+                                      "date",
+                                      "divide",
+                                      "boolean",
+                                      "split"
+                                    ]
+                                  },
+                                  "format": {
+                                    "type": "string",
+                                    "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                  },
+                                  "timezone": {
+                                    "type": "string",
+                                    "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                  },
+                                  "by": {
+                                    "type": "number",
+                                    "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                    "exclusiveMinimum": 0
+                                  },
+                                  "separator": {
+                                    "type": "string",
+                                    "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                    "default": ","
+                                  },
+                                  "default": {
+                                    "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "allOf": [
+                                  {
+                                    "not": {
+                                      "required": [
+                                        "feed_field",
+                                        "value"
+                                      ]
+                                    }
+                                  },
+                                  {
+                                    "not": {
+                                      "required": [
+                                        "catalog_field",
+                                        "asset_group_id"
+                                      ]
+                                    }
+                                  }
+                                ],
+                                "additionalProperties": true,
+                                "examples": [
+                                  {
+                                    "description": "Simple field rename",
+                                    "data": {
+                                      "feed_field": "hotel_name",
+                                      "catalog_field": "name"
+                                    }
+                                  },
+                                  {
+                                    "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                    "data": {
+                                      "feed_field": "available_from",
+                                      "catalog_field": "valid_from",
+                                      "transform": "date",
+                                      "format": "YYYYMMDD",
+                                      "timezone": "UTC"
+                                    }
+                                  },
+                                  {
+                                    "description": "Divide cents to dollars",
+                                    "data": {
+                                      "feed_field": "price_cents",
+                                      "catalog_field": "price.amount",
+                                      "transform": "divide",
+                                      "by": 100
+                                    }
+                                  },
+                                  {
+                                    "description": "Static literal injection \u2014 currency not in feed",
+                                    "data": {
+                                      "catalog_field": "price.currency",
+                                      "value": "USD"
+                                    }
+                                  },
+                                  {
+                                    "description": "Image URL assigned to typed asset pool",
+                                    "data": {
+                                      "feed_field": "primary_photo_url",
+                                      "asset_group_id": "images_landscape"
+                                    }
+                                  },
+                                  {
+                                    "description": "Vertical photo URL assigned to vertical pool",
+                                    "data": {
+                                      "feed_field": "portrait_photo_url",
+                                      "asset_group_id": "images_vertical"
+                                    }
+                                  },
+                                  {
+                                    "description": "Split comma-separated tags to array",
+                                    "data": {
+                                      "feed_field": "amenity_list",
+                                      "catalog_field": "amenities",
+                                      "transform": "split",
+                                      "separator": ","
+                                    }
+                                  },
+                                  {
+                                    "description": "Boolean coercion with default",
+                                    "data": {
+                                      "feed_field": "is_available",
+                                      "catalog_field": "available",
+                                      "transform": "boolean",
+                                      "default": false
+                                    }
+                                  }
+                                ]
+                              },
+                              "minItems": 1
+                            }
+                          },
+                          "required": [
+                            "type"
+                          ],
+                          "additionalProperties": true,
+                          "examples": [
+                            {
+                              "description": "Synced product catalog from Google Merchant Center",
+                              "data": {
+                                "catalog_id": "gmc-primary",
+                                "name": "Primary Product Feed",
+                                "type": "product",
+                                "url": "https://feeds.acmecorp.com/products.xml",
+                                "feed_format": "google_merchant_center",
+                                "update_frequency": "daily"
+                              }
+                            },
+                            {
+                              "description": "Inventory feed for store-level stock data",
+                              "data": {
+                                "catalog_id": "store-inventory",
+                                "name": "Store Inventory",
+                                "type": "inventory",
+                                "url": "https://feeds.acmecorp.com/inventory.json",
+                                "feed_format": "custom",
+                                "update_frequency": "hourly"
+                              }
+                            },
+                            {
+                              "description": "Store locator feed",
+                              "data": {
+                                "catalog_id": "retail-locations",
+                                "name": "Retail Locations",
+                                "type": "store",
+                                "url": "https://feeds.acmecorp.com/stores.json",
+                                "feed_format": "custom",
+                                "update_frequency": "weekly"
+                              }
+                            },
+                            {
+                              "description": "Promotional pricing feed",
+                              "data": {
+                                "catalog_id": "summer-sale",
+                                "name": "Summer Sale Promotions",
+                                "type": "promotion",
+                                "url": "https://feeds.acmecorp.com/promotions.json",
+                                "feed_format": "google_merchant_center",
+                                "update_frequency": "daily"
+                              }
+                            },
+                            {
+                              "description": "Inline offering catalog (no sync needed)",
+                              "data": {
+                                "type": "offering",
+                                "items": [
+                                  {
+                                    "offering_id": "summer-sale",
+                                    "name": "Summer Sale",
+                                    "landing_url": "https://acme.com/summer"
+                                  }
+                                ]
+                              }
+                            },
+                            {
+                              "description": "Reference to a previously synced catalog by ID",
+                              "data": {
+                                "catalog_id": "gmc-primary",
+                                "type": "product",
+                                "ids": [
+                                  "SKU-12345",
+                                  "SKU-67890"
+                                ]
+                              }
+                            },
+                            {
+                              "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                              "data": {
+                                "type": "product",
+                                "gtins": [
+                                  "00013000006040",
+                                  "00013000006057"
+                                ],
+                                "content_id_type": "gtin",
+                                "conversion_events": [
+                                  "purchase",
+                                  "add_to_cart"
+                                ]
+                              }
+                            },
+                            {
+                              "description": "Inline store catalog with catchment areas",
+                              "data": {
+                                "catalog_id": "retail-locations",
+                                "name": "Retail Locations",
+                                "type": "store",
+                                "items": [
+                                  {
+                                    "store_id": "amsterdam-flagship",
+                                    "name": "Amsterdam Flagship",
+                                    "location": {
+                                      "lat": 52.3676,
+                                      "lng": 4.9041
+                                    },
+                                    "catchments": [
+                                      {
+                                        "catchment_id": "walk",
+                                        "travel_time": {
+                                          "value": 10,
+                                          "unit": "min"
+                                        },
+                                        "transport_mode": "walking"
+                                      },
+                                      {
+                                        "catchment_id": "drive",
+                                        "travel_time": {
+                                          "value": 15,
+                                          "unit": "min"
+                                        },
+                                        "transport_mode": "driving"
+                                      }
+                                    ]
+                                  }
+                                ]
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  ]
+                }
+              },
+              "additionalProperties": true
+            },
+            "rights": {
+              "type": "array",
+              "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+              "items": {
+                "title": "Rights Constraint",
+                "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                "type": "object",
+                "properties": {
+                  "rights_id": {
+                    "type": "string",
+                    "description": "Rights grant identifier from the acquire_rights response"
+                  },
+                  "rights_agent": {
+                    "type": "object",
+                    "description": "The agent that granted these rights",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "MCP endpoint URL of the rights agent"
+                      },
+                      "id": {
+                        "type": "string",
+                        "description": "Agent identifier"
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "id"
+                    ]
+                  },
+                  "valid_from": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Start of the rights validity period"
+                  },
+                  "valid_until": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "End of the rights validity period. Creative should not be served after this time."
+                  },
+                  "uses": {
+                    "type": "array",
+                    "description": "Rights uses covered by this constraint",
+                    "items": {
+                      "title": "Right Use",
+                      "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                      "type": "string",
+                      "enum": [
+                        "likeness",
+                        "voice",
+                        "name",
+                        "endorsement",
+                        "motion_capture",
+                        "signature",
+                        "catchphrase",
+                        "sync",
+                        "background_music",
+                        "editorial",
+                        "commercial"
+                      ],
+                      "enumDescriptions": {
+                        "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                        "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                        "name": "Use of a person's name in advertising or promotional materials",
+                        "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                        "motion_capture": "Use of a person's movement patterns for animation or video",
+                        "signature": "Use of a person's signature or autograph",
+                        "catchphrase": "Use of a person's well-known phrases or sayings",
+                        "sync": "Synchronization of music with visual media (ads, video)",
+                        "background_music": "Use of music as background audio in advertising",
+                        "editorial": "Use in editorial or informational contexts",
+                        "commercial": "Use in commercial advertising and promotional contexts"
+                      }
+                    },
+                    "minItems": 1
+                  },
+                  "countries": {
+                    "type": "array",
+                    "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    }
+                  },
+                  "excluded_countries": {
+                    "type": "array",
+                    "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    }
+                  },
+                  "impression_cap": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+                  },
+                  "right_type": {
+                    "title": "Right Type",
+                    "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                    "type": "string",
+                    "enum": [
+                      "talent",
+                      "character",
+                      "brand_ip",
+                      "music",
+                      "stock_media"
+                    ],
+                    "enumDescriptions": {
+                      "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                      "character": "Rights to fictional characters for advertising or co-branding",
+                      "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                      "music": "Rights to musical compositions or recordings (sync, background music)",
+                      "stock_media": "Rights to stock photography, video, or audio collections"
+                    }
+                  },
+                  "approval_status": {
+                    "type": "string",
+                    "enum": [
+                      "pending",
+                      "approved",
+                      "rejected"
+                    ],
+                    "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+                  },
+                  "verification_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "rights_id",
+                  "rights_agent",
+                  "uses"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "industry_identifiers": {
+              "type": "array",
+              "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+              "items": {
+                "title": "Industry Identifier",
+                "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "title": "Creative Identifier Type",
+                    "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                    "type": "string",
+                    "enum": [
+                      "ad_id",
+                      "isci",
+                      "clearcast_clock"
+                    ],
+                    "enumDescriptions": {
+                      "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                      "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                      "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                    },
+                    "examples": [
+                      "ad_id",
+                      "isci",
+                      "clearcast_clock"
+                    ]
+                  },
+                  "value": {
+                    "type": "string",
+                    "maxLength": 64,
+                    "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ],
+                "additionalProperties": true
+              },
+              "uniqueItems": true
+            },
+            "provenance": {
+              "title": "Provenance",
+              "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+              "type": "object",
+              "properties": {
+                "digital_source_type": {
+                  "title": "Digital Source Type",
+                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                  "type": "string",
+                  "enum": [
+                    "digital_capture",
+                    "digital_creation",
+                    "trained_algorithmic_media",
+                    "composite_with_trained_algorithmic_media",
+                    "algorithmic_media",
+                    "composite_capture",
+                    "composite_synthetic",
+                    "human_edits",
+                    "data_driven_media"
+                  ],
+                  "enumDescriptions": {
+                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                    "composite_capture": "Multiple digital captures composited together without AI",
+                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                  }
+                },
+                "ai_tool": {
+                  "type": "object",
+                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                  "properties": {
+                    "name": {
+                      "type": "string",
+                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                    },
+                    "version": {
+                      "type": "string",
+                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                    },
+                    "provider": {
+                      "type": "string",
+                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                    }
+                  },
+                  "required": [
+                    "name"
+                  ],
+                  "additionalProperties": true
+                },
+                "human_oversight": {
+                  "type": "string",
+                  "description": "Level of human involvement in the AI-assisted creation process",
+                  "enum": [
+                    "none",
+                    "prompt_only",
+                    "selected",
+                    "edited",
+                    "directed"
+                  ],
+                  "enumDescriptions": {
+                    "none": "Fully automated with no human involvement in generation",
+                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                    "selected": "Human selected from multiple AI-generated candidates",
+                    "edited": "Human edited or refined AI-generated output",
+                    "directed": "Human directed the creative process with AI as an assistive tool"
+                  }
+                },
+                "declared_by": {
+                  "type": "object",
+                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent or service that declared this provenance"
+                    },
+                    "role": {
+                      "type": "string",
+                      "enum": [
+                        "creator",
+                        "advertiser",
+                        "agency",
+                        "platform",
+                        "tool"
+                      ],
+                      "description": "Role of the declaring party in the supply chain",
+                      "enumDescriptions": {
+                        "creator": "The party that created or generated the content",
+                        "advertiser": "The brand or advertiser that owns the content",
+                        "agency": "Agency acting on behalf of the advertiser",
+                        "platform": "Ad platform or publisher that processed the content",
+                        "tool": "Automated tool or service that attached provenance metadata"
+                      }
+                    }
+                  },
+                  "required": [
+                    "role"
+                  ],
+                  "additionalProperties": true
+                },
+                "declared_at": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                },
+                "created_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this content was created or generated (ISO 8601)"
+                },
+                "c2pa": {
+                  "type": "object",
+                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                  "properties": {
+                    "manifest_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the C2PA manifest store for this content"
+                    }
+                  },
+                  "required": [
+                    "manifest_url"
+                  ],
+                  "additionalProperties": true
+                },
+                "disclosure": {
+                  "type": "object",
+                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                  "properties": {
+                    "required": {
+                      "type": "boolean",
+                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                    },
+                    "jurisdictions": {
+                      "type": "array",
+                      "description": "Jurisdictions where disclosure obligations apply",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "country": {
+                            "type": "string",
+                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                          },
+                          "region": {
+                            "type": "string",
+                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                          },
+                          "regulation": {
+                            "type": "string",
+                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                          },
+                          "label_text": {
+                            "type": "string",
+                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                          },
+                          "render_guidance": {
+                            "type": "object",
+                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                            "minProperties": 1,
+                            "properties": {
+                              "persistence": {
+                                "title": "Disclosure Persistence",
+                                "description": "How long the disclosure must persist during content playback or display",
+                                "type": "string",
+                                "enum": [
+                                  "continuous",
+                                  "initial",
+                                  "flexible"
+                                ],
+                                "enumDescriptions": {
+                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                }
+                              },
+                              "min_duration_ms": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                              },
+                              "positions": {
+                                "type": "array",
+                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                "items": {
+                                  "title": "Disclosure Position",
+                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                  "type": "string",
+                                  "enum": [
+                                    "prominent",
+                                    "footer",
+                                    "audio",
+                                    "subtitle",
+                                    "overlay",
+                                    "end_card",
+                                    "pre_roll",
+                                    "companion"
+                                  ]
+                                },
+                                "minItems": 1,
+                                "uniqueItems": true
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "country",
+                          "regulation"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "required"
+                  ],
+                  "additionalProperties": true
+                },
+                "verification": {
+                  "type": "array",
+                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                  "minItems": 1,
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "verified_by": {
+                        "type": "string",
+                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                      },
+                      "verified_time": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "When the verification was performed (ISO 8601)"
+                      },
+                      "result": {
+                        "type": "string",
+                        "enum": [
+                          "authentic",
+                          "ai_generated",
+                          "ai_modified",
+                          "inconclusive"
+                        ],
+                        "description": "Verification outcome"
+                      },
+                      "confidence": {
+                        "type": "number",
+                        "minimum": 0,
+                        "maximum": 1,
+                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                      },
+                      "details_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the full verification report"
+                      }
+                    },
+                    "required": [
+                      "verified_by",
+                      "result"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "additionalProperties": true
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "format_id",
+            "assets"
+          ],
+          "additionalProperties": true
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when generated asset URLs in the manifest expire. Set to the earliest expiration across all generated assets. Re-build the creative after this time to get fresh URLs."
+        },
+        "preview": {
+          "type": "object",
+          "description": "Preview renders included when the request set include_preview to true and the agent supports it. Contains the same content fields as a preview_creative single response (previews, interactive_url, expires_at) minus the response_type discriminator, so clients can reuse the same preview rendering logic.",
+          "properties": {
+            "previews": {
+              "type": "array",
+              "description": "Array of preview variants. Each preview corresponds to an input set from preview_inputs, or a single default preview if no inputs were provided.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "preview_id": {
+                    "type": "string",
+                    "description": "Unique identifier for this preview variant"
+                  },
+                  "renders": {
+                    "type": "array",
+                    "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
+                    "items": {
+                      "title": "Preview Render",
+                      "description": "A single rendered piece of a creative preview with discriminated output format",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "URL-only preview format",
+                          "properties": {
+                            "render_id": {
+                              "type": "string",
+                              "description": "Unique identifier for this rendered piece within the variant"
+                            },
+                            "output_format": {
+                              "type": "string",
+                              "const": "url",
+                              "description": "Discriminator indicating preview_url is provided"
+                            },
+                            "preview_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                            },
+                            "role": {
+                              "type": "string",
+                              "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                            },
+                            "dimensions": {
+                              "type": "object",
+                              "description": "Dimensions for this rendered piece",
+                              "properties": {
+                                "width": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "height": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "width",
+                                "height"
+                              ]
+                            },
+                            "embedding": {
+                              "type": "object",
+                              "description": "Optional security and embedding metadata for safe iframe integration",
+                              "properties": {
+                                "recommended_sandbox": {
+                                  "type": "string",
+                                  "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                },
+                                "requires_https": {
+                                  "type": "boolean",
+                                  "description": "Whether this output requires HTTPS for secure embedding"
+                                },
+                                "supports_fullscreen": {
+                                  "type": "boolean",
+                                  "description": "Whether this output supports fullscreen mode"
+                                },
+                                "csp_policy": {
+                                  "type": "string",
+                                  "description": "Content Security Policy requirements for embedding"
+                                }
+                              }
+                            }
+                          },
+                          "required": [
+                            "render_id",
+                            "output_format",
+                            "preview_url",
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "HTML-only preview format",
+                          "properties": {
+                            "render_id": {
+                              "type": "string",
+                              "description": "Unique identifier for this rendered piece within the variant"
+                            },
+                            "output_format": {
+                              "type": "string",
+                              "const": "html",
+                              "description": "Discriminator indicating preview_html is provided"
+                            },
+                            "preview_html": {
+                              "type": "string",
+                              "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                            },
+                            "role": {
+                              "type": "string",
+                              "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                            },
+                            "dimensions": {
+                              "type": "object",
+                              "description": "Dimensions for this rendered piece",
+                              "properties": {
+                                "width": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "height": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "width",
+                                "height"
+                              ]
+                            },
+                            "embedding": {
+                              "type": "object",
+                              "description": "Optional security and embedding metadata",
+                              "properties": {
+                                "recommended_sandbox": {
+                                  "type": "string",
+                                  "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                },
+                                "requires_https": {
+                                  "type": "boolean",
+                                  "description": "Whether this output requires HTTPS for secure embedding"
+                                },
+                                "supports_fullscreen": {
+                                  "type": "boolean",
+                                  "description": "Whether this output supports fullscreen mode"
+                                },
+                                "csp_policy": {
+                                  "type": "string",
+                                  "description": "Content Security Policy requirements for embedding"
+                                }
+                              }
+                            }
+                          },
+                          "required": [
+                            "render_id",
+                            "output_format",
+                            "preview_html",
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Both URL and HTML preview format",
+                          "properties": {
+                            "render_id": {
+                              "type": "string",
+                              "description": "Unique identifier for this rendered piece within the variant"
+                            },
+                            "output_format": {
+                              "type": "string",
+                              "const": "both",
+                              "description": "Discriminator indicating both preview_url and preview_html are provided"
+                            },
+                            "preview_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                            },
+                            "preview_html": {
+                              "type": "string",
+                              "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                            },
+                            "role": {
+                              "type": "string",
+                              "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                            },
+                            "dimensions": {
+                              "type": "object",
+                              "description": "Dimensions for this rendered piece",
+                              "properties": {
+                                "width": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "height": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "width",
+                                "height"
+                              ]
+                            },
+                            "embedding": {
+                              "type": "object",
+                              "description": "Optional security and embedding metadata for safe iframe integration",
+                              "properties": {
+                                "recommended_sandbox": {
+                                  "type": "string",
+                                  "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                },
+                                "requires_https": {
+                                  "type": "boolean",
+                                  "description": "Whether this output requires HTTPS for secure embedding"
+                                },
+                                "supports_fullscreen": {
+                                  "type": "boolean",
+                                  "description": "Whether this output supports fullscreen mode"
+                                },
+                                "csp_policy": {
+                                  "type": "string",
+                                  "description": "Content Security Policy requirements for embedding"
+                                }
+                              }
+                            }
+                          },
+                          "required": [
+                            "render_id",
+                            "output_format",
+                            "preview_url",
+                            "preview_html",
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "input": {
+                    "type": "object",
+                    "description": "The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Human-readable name for this variant"
+                      },
+                      "macros": {
+                        "type": "object",
+                        "description": "Macro values applied to this variant",
+                        "additionalProperties": {
+                          "type": "string"
+                        }
+                      },
+                      "context_description": {
+                        "type": "string",
+                        "description": "Context description applied to this variant"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "preview_id",
+                  "renders",
+                  "input"
+                ]
+              },
+              "minItems": 1
+            },
+            "interactive_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "Optional URL to an interactive testing page that shows all preview variants with controls to switch between them."
+            },
+            "expires_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
+            }
+          },
+          "required": [
+            "previews",
+            "expires_at"
+          ]
+        },
+        "preview_error": {
+          "title": "Error",
+          "description": "When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Distinguishes 'agent does not support inline preview' (preview and preview_error both absent) from 'preview generation failed' (preview absent, preview_error present). Omitted when preview succeeded or was not requested.",
+          "type": "object",
+          "properties": {
+            "code": {
+              "type": "string",
+              "minLength": 1,
+              "maxLength": 64,
+              "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+            },
+            "message": {
+              "type": "string",
+              "description": "Human-readable error message"
+            },
+            "field": {
+              "type": "string",
+              "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+            },
+            "suggestion": {
+              "type": "string",
+              "description": "Suggested fix for the error"
+            },
+            "retry_after": {
+              "type": "number",
+              "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+              "minimum": 1,
+              "maximum": 3600
+            },
+            "details": {
+              "type": "object",
+              "description": "Additional task-specific error details",
+              "additionalProperties": true
+            },
+            "recovery": {
+              "type": "string",
+              "enum": [
+                "transient",
+                "correctable",
+                "terminal"
+              ],
+              "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+            }
+          },
+          "required": [
+            "code",
+            "message"
+          ],
+          "additionalProperties": true
+        },
+        "pricing_option_id": {
+          "type": "string",
+          "description": "Which rate card pricing option was applied for this build. Present when the creative agent charges for its services. Pass this in report_usage to identify which pricing option was applied."
+        },
+        "vendor_cost": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Cost incurred for this build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time rather than build time."
+        },
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code for vendor_cost."
+        },
+        "consumption": {
+          "title": "Creative Consumption",
+          "description": "Structured consumption details for this build. Informational \u2014 lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth.",
+          "type": "object",
+          "properties": {
+            "tokens": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "LLM or generation tokens consumed during creative generation."
+            },
+            "images_generated": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of images produced during generation."
+            },
+            "renders": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of render passes performed (video, animation)."
+            },
+            "duration_seconds": {
+              "type": "number",
+              "minimum": 0,
+              "description": "Processing time billed, in seconds. For compute-time pricing models."
+            }
+          },
+          "additionalProperties": true
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "creative_manifest"
+      ],
+      "additionalProperties": true
+    },
+    {
+      "title": "BuildCreativeMultiSuccess",
+      "description": "Multi-format success response. Returned when the request used target_format_ids. Contains one manifest per requested format. Multi-format requests are atomic \u2014 all formats must succeed or the entire request fails with an error response. Array order corresponds to the target_format_ids request order.",
+      "type": "object",
+      "properties": {
+        "creative_manifests": {
+          "type": "array",
+          "items": {
+            "title": "Creative Manifest",
+            "description": "Complete specification of a creative: format_id + assets. Everything the creative needs \u2014 images, text, briefs, catalogs \u2014 lives in the assets map, declared by the format. Each asset is typed according to its asset_type from the format specification.",
+            "type": "object",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "assets": {
+                "type": "object",
+                "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
+                "patternProperties": {
+                  "^[a-z0-9_]+$": {
+                    "anyOf": [
+                      {
+                        "title": "Image Asset",
+                        "description": "Image asset with URL and dimensions",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the image asset"
+                          },
+                          "width": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Width in pixels"
+                          },
+                          "height": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Height in pixels"
+                          },
+                          "format": {
+                            "type": "string",
+                            "description": "Image file format (jpg, png, gif, webp, etc.)"
+                          },
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Alternative text for accessibility",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url",
+                          "width",
+                          "height"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Video Asset",
+                        "description": "Video asset with URL and technical specifications including audio track properties",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the video asset"
+                          },
+                          "width": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Width in pixels"
+                          },
+                          "height": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Height in pixels"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Video duration in milliseconds",
+                            "minimum": 1
+                          },
+                          "file_size_bytes": {
+                            "type": "integer",
+                            "description": "File size in bytes",
+                            "minimum": 1
+                          },
+                          "container_format": {
+                            "type": "string",
+                            "description": "Video container format (mp4, webm, mov, etc.)"
+                          },
+                          "video_codec": {
+                            "type": "string",
+                            "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                          },
+                          "video_bitrate_kbps": {
+                            "type": "integer",
+                            "description": "Video stream bitrate in kilobits per second",
+                            "minimum": 1
+                          },
+                          "frame_rate": {
+                            "type": "string",
+                            "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                          },
+                          "frame_rate_type": {
+                            "type": "string",
+                            "enum": [
+                              "constant",
+                              "variable"
+                            ],
+                            "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                          },
+                          "scan_type": {
+                            "type": "string",
+                            "enum": [
+                              "progressive",
+                              "interlaced"
+                            ],
+                            "description": "Scan type of the video"
+                          },
+                          "color_space": {
+                            "type": "string",
+                            "enum": [
+                              "rec709",
+                              "rec2020",
+                              "rec2100",
+                              "srgb",
+                              "dci_p3"
+                            ],
+                            "description": "Color space of the video"
+                          },
+                          "hdr_format": {
+                            "type": "string",
+                            "enum": [
+                              "sdr",
+                              "hdr10",
+                              "hdr10_plus",
+                              "hlg",
+                              "dolby_vision"
+                            ],
+                            "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                          },
+                          "chroma_subsampling": {
+                            "type": "string",
+                            "enum": [
+                              "4:2:0",
+                              "4:2:2",
+                              "4:4:4"
+                            ],
+                            "description": "Chroma subsampling format"
+                          },
+                          "video_bit_depth": {
+                            "type": "integer",
+                            "enum": [
+                              8,
+                              10,
+                              12
+                            ],
+                            "description": "Video bit depth"
+                          },
+                          "gop_interval_seconds": {
+                            "type": "number",
+                            "description": "GOP/keyframe interval in seconds"
+                          },
+                          "gop_type": {
+                            "type": "string",
+                            "enum": [
+                              "closed",
+                              "open"
+                            ],
+                            "description": "GOP structure type"
+                          },
+                          "moov_atom_position": {
+                            "type": "string",
+                            "enum": [
+                              "start",
+                              "end"
+                            ],
+                            "description": "Position of moov atom in MP4 container"
+                          },
+                          "has_audio": {
+                            "type": "boolean",
+                            "description": "Whether the video contains an audio track"
+                          },
+                          "audio_codec": {
+                            "type": "string",
+                            "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                          },
+                          "audio_sampling_rate_hz": {
+                            "type": "integer",
+                            "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                          },
+                          "audio_channels": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo",
+                              "5.1",
+                              "7.1"
+                            ],
+                            "description": "Audio channel configuration"
+                          },
+                          "audio_bit_depth": {
+                            "type": "integer",
+                            "enum": [
+                              16,
+                              24,
+                              32
+                            ],
+                            "description": "Audio bit depth"
+                          },
+                          "audio_bitrate_kbps": {
+                            "type": "integer",
+                            "description": "Audio bitrate in kilobits per second",
+                            "minimum": 1
+                          },
+                          "audio_loudness_lufs": {
+                            "type": "number",
+                            "description": "Integrated loudness in LUFS"
+                          },
+                          "audio_true_peak_dbfs": {
+                            "type": "number",
+                            "description": "True peak level in dBFS"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the video content",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url",
+                          "width",
+                          "height"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Audio Asset",
+                        "description": "Audio asset with URL and technical specifications",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the audio asset"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Audio duration in milliseconds",
+                            "minimum": 0
+                          },
+                          "file_size_bytes": {
+                            "type": "integer",
+                            "description": "File size in bytes",
+                            "minimum": 1
+                          },
+                          "container_format": {
+                            "type": "string",
+                            "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                          },
+                          "codec": {
+                            "type": "string",
+                            "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                          },
+                          "sampling_rate_hz": {
+                            "type": "integer",
+                            "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                          },
+                          "channels": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo",
+                              "5.1",
+                              "7.1"
+                            ],
+                            "description": "Channel configuration"
+                          },
+                          "bit_depth": {
+                            "type": "integer",
+                            "enum": [
+                              16,
+                              24,
+                              32
+                            ],
+                            "description": "Bit depth"
+                          },
+                          "bitrate_kbps": {
+                            "type": "integer",
+                            "description": "Bitrate in kilobits per second",
+                            "minimum": 1
+                          },
+                          "loudness_lufs": {
+                            "type": "number",
+                            "description": "Integrated loudness in LUFS"
+                          },
+                          "true_peak_dbfs": {
+                            "type": "number",
+                            "description": "True peak level in dBFS"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "VAST Asset",
+                        "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "url",
+                                "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL endpoint that returns VAST XML"
+                              },
+                              "vast_version": {
+                                "title": "VAST Version",
+                                "description": "VAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "2.0",
+                                  "3.0",
+                                  "4.0",
+                                  "4.1",
+                                  "4.2"
+                                ]
+                              },
+                              "vpaid_enabled": {
+                                "type": "boolean",
+                                "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected video duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "VAST Tracking Event",
+                                  "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "rewind",
+                                    "skip",
+                                    "playerExpand",
+                                    "playerCollapse",
+                                    "fullscreen",
+                                    "exitFullscreen",
+                                    "progress",
+                                    "notUsed",
+                                    "otherAdInteraction",
+                                    "interactiveStart",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "closeLinear",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this VAST tag"
+                              },
+                              "captions_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                "x-accessibility": true
+                              },
+                              "audio_description_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to audio description track for visually impaired users",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "inline",
+                                "description": "Discriminator indicating VAST is delivered as inline XML content"
+                              },
+                              "content": {
+                                "type": "string",
+                                "description": "Inline VAST XML content"
+                              },
+                              "vast_version": {
+                                "title": "VAST Version",
+                                "description": "VAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "2.0",
+                                  "3.0",
+                                  "4.0",
+                                  "4.1",
+                                  "4.2"
+                                ]
+                              },
+                              "vpaid_enabled": {
+                                "type": "boolean",
+                                "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected video duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "VAST Tracking Event",
+                                  "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "rewind",
+                                    "skip",
+                                    "playerExpand",
+                                    "playerCollapse",
+                                    "fullscreen",
+                                    "exitFullscreen",
+                                    "progress",
+                                    "notUsed",
+                                    "otherAdInteraction",
+                                    "interactiveStart",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "closeLinear",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this VAST tag"
+                              },
+                              "captions_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                "x-accessibility": true
+                              },
+                              "audio_description_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to audio description track for visually impaired users",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "content"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      {
+                        "title": "Text Asset",
+                        "description": "Text content asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "Text content"
+                          },
+                          "language": {
+                            "type": "string",
+                            "description": "Language code (e.g., 'en', 'es', 'fr')"
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "URL Asset",
+                        "description": "URL reference asset",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL reference"
+                          },
+                          "url_type": {
+                            "title": "URL Asset Type",
+                            "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                            "type": "string",
+                            "enum": [
+                              "clickthrough",
+                              "tracker_pixel",
+                              "tracker_script"
+                            ]
+                          },
+                          "description": {
+                            "type": "string",
+                            "description": "Description of what this URL points to"
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "HTML Asset",
+                        "description": "HTML content asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "HTML content"
+                          },
+                          "version": {
+                            "type": "string",
+                            "description": "HTML version (e.g., 'HTML5')"
+                          },
+                          "accessibility": {
+                            "type": "object",
+                            "description": "Self-declared accessibility properties for this opaque creative",
+                            "x-accessibility": true,
+                            "properties": {
+                              "alt_text": {
+                                "type": "string",
+                                "description": "Text alternative describing the creative content"
+                              },
+                              "keyboard_navigable": {
+                                "type": "boolean",
+                                "description": "Whether the creative can be fully operated via keyboard"
+                              },
+                              "motion_control": {
+                                "type": "boolean",
+                                "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                              },
+                              "screen_reader_tested": {
+                                "type": "boolean",
+                                "description": "Whether the creative has been tested with screen readers"
+                              }
+                            }
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "JavaScript Asset",
+                        "description": "JavaScript code asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "JavaScript content"
+                          },
+                          "module_type": {
+                            "title": "JavaScript Module Type",
+                            "description": "JavaScript module type",
+                            "type": "string",
+                            "enum": [
+                              "esm",
+                              "commonjs",
+                              "script"
+                            ]
+                          },
+                          "accessibility": {
+                            "type": "object",
+                            "description": "Self-declared accessibility properties for this opaque creative",
+                            "x-accessibility": true,
+                            "properties": {
+                              "alt_text": {
+                                "type": "string",
+                                "description": "Text alternative describing the creative content"
+                              },
+                              "keyboard_navigable": {
+                                "type": "boolean",
+                                "description": "Whether the creative can be fully operated via keyboard"
+                              },
+                              "motion_control": {
+                                "type": "boolean",
+                                "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                              },
+                              "screen_reader_tested": {
+                                "type": "boolean",
+                                "description": "Whether the creative has been tested with screen readers"
+                              }
+                            }
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Webhook Asset",
+                        "description": "Webhook for server-side dynamic content rendering (DCO)",
+                        "type": "object",
+                        "properties": {
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "Webhook URL to call for dynamic content"
+                          },
+                          "method": {
+                            "title": "HTTP Method",
+                            "description": "HTTP method",
+                            "type": "string",
+                            "enum": [
+                              "GET",
+                              "POST"
+                            ],
+                            "default": "POST"
+                          },
+                          "timeout_ms": {
+                            "type": "integer",
+                            "minimum": 10,
+                            "maximum": 5000,
+                            "default": 500,
+                            "description": "Maximum time to wait for response in milliseconds"
+                          },
+                          "supported_macros": {
+                            "type": "array",
+                            "items": {
+                              "oneOf": [
+                                {
+                                  "title": "Universal Macro",
+                                  "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                  "type": "string",
+                                  "enum": [
+                                    "MEDIA_BUY_ID",
+                                    "PACKAGE_ID",
+                                    "CREATIVE_ID",
+                                    "CACHEBUSTER",
+                                    "TIMESTAMP",
+                                    "CLICK_URL",
+                                    "GDPR",
+                                    "GDPR_CONSENT",
+                                    "US_PRIVACY",
+                                    "GPP_STRING",
+                                    "GPP_SID",
+                                    "IP_ADDRESS",
+                                    "LIMIT_AD_TRACKING",
+                                    "DEVICE_TYPE",
+                                    "OS",
+                                    "OS_VERSION",
+                                    "DEVICE_MAKE",
+                                    "DEVICE_MODEL",
+                                    "USER_AGENT",
+                                    "APP_BUNDLE",
+                                    "APP_NAME",
+                                    "COUNTRY",
+                                    "REGION",
+                                    "CITY",
+                                    "ZIP",
+                                    "DMA",
+                                    "LAT",
+                                    "LONG",
+                                    "DEVICE_ID",
+                                    "DEVICE_ID_TYPE",
+                                    "DOMAIN",
+                                    "PAGE_URL",
+                                    "REFERRER",
+                                    "KEYWORDS",
+                                    "PLACEMENT_ID",
+                                    "FOLD_POSITION",
+                                    "AD_WIDTH",
+                                    "AD_HEIGHT",
+                                    "VIDEO_ID",
+                                    "VIDEO_TITLE",
+                                    "VIDEO_DURATION",
+                                    "VIDEO_CATEGORY",
+                                    "CONTENT_GENRE",
+                                    "CONTENT_RATING",
+                                    "PLAYER_WIDTH",
+                                    "PLAYER_HEIGHT",
+                                    "POD_POSITION",
+                                    "POD_SIZE",
+                                    "AD_BREAK_ID",
+                                    "STATION_ID",
+                                    "COLLECTION_NAME",
+                                    "INSTALLMENT_ID",
+                                    "AUDIO_DURATION",
+                                    "TMPX",
+                                    "AXEM",
+                                    "CATALOG_ID",
+                                    "SKU",
+                                    "GTIN",
+                                    "OFFERING_ID",
+                                    "JOB_ID",
+                                    "HOTEL_ID",
+                                    "FLIGHT_ID",
+                                    "VEHICLE_ID",
+                                    "LISTING_ID",
+                                    "STORE_ID",
+                                    "PROGRAM_ID",
+                                    "DESTINATION_ID",
+                                    "CREATIVE_VARIANT_ID",
+                                    "APP_ITEM_ID"
+                                  ],
+                                  "enumDescriptions": {
+                                    "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                    "PACKAGE_ID": "AdCP package identifier",
+                                    "CREATIVE_ID": "AdCP creative identifier",
+                                    "CACHEBUSTER": "Random number to prevent caching",
+                                    "TIMESTAMP": "Unix timestamp in milliseconds",
+                                    "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                    "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                    "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                    "US_PRIVACY": "US Privacy (CCPA) string",
+                                    "GPP_STRING": "Global Privacy Platform consent string",
+                                    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                    "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                    "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                    "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                    "OS_VERSION": "OS version number",
+                                    "DEVICE_MAKE": "Device manufacturer",
+                                    "DEVICE_MODEL": "Device model identifier",
+                                    "USER_AGENT": "Full user agent string",
+                                    "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                    "APP_NAME": "Human-readable app name",
+                                    "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                    "REGION": "State/province/region code",
+                                    "CITY": "City name",
+                                    "ZIP": "Postal code",
+                                    "DMA": "Nielsen DMA code (US TV markets)",
+                                    "LAT": "Latitude coordinate",
+                                    "LONG": "Longitude coordinate",
+                                    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                    "DOMAIN": "Domain where ad is shown",
+                                    "PAGE_URL": "Full page URL (encoded)",
+                                    "REFERRER": "HTTP referrer URL",
+                                    "KEYWORDS": "Page keywords (comma-separated)",
+                                    "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                    "AD_WIDTH": "Ad slot width in pixels",
+                                    "AD_HEIGHT": "Ad slot height in pixels",
+                                    "VIDEO_ID": "Content video identifier",
+                                    "VIDEO_TITLE": "Content video title",
+                                    "VIDEO_DURATION": "Content duration in seconds",
+                                    "VIDEO_CATEGORY": "IAB content category",
+                                    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                    "PLAYER_WIDTH": "Video player width in pixels",
+                                    "PLAYER_HEIGHT": "Video player height in pixels",
+                                    "POD_POSITION": "Position within ad break",
+                                    "POD_SIZE": "Total ads in the ad break",
+                                    "AD_BREAK_ID": "Unique ad break identifier",
+                                    "STATION_ID": "Radio station or podcast identifier",
+                                    "COLLECTION_NAME": "Program or collection name",
+                                    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                    "AUDIO_DURATION": "Audio content duration in seconds",
+                                    "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                    "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                    "SKU": "Product SKU identifier for the catalog item being rendered",
+                                    "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                    "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                    "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                    "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                  }
+                                },
+                                {
+                                  "type": "string",
+                                  "description": "Custom or publisher-specific macro name"
+                                }
+                              ]
+                            },
+                            "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                          },
+                          "required_macros": {
+                            "type": "array",
+                            "items": {
+                              "oneOf": [
+                                {
+                                  "title": "Universal Macro",
+                                  "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                  "type": "string",
+                                  "enum": [
+                                    "MEDIA_BUY_ID",
+                                    "PACKAGE_ID",
+                                    "CREATIVE_ID",
+                                    "CACHEBUSTER",
+                                    "TIMESTAMP",
+                                    "CLICK_URL",
+                                    "GDPR",
+                                    "GDPR_CONSENT",
+                                    "US_PRIVACY",
+                                    "GPP_STRING",
+                                    "GPP_SID",
+                                    "IP_ADDRESS",
+                                    "LIMIT_AD_TRACKING",
+                                    "DEVICE_TYPE",
+                                    "OS",
+                                    "OS_VERSION",
+                                    "DEVICE_MAKE",
+                                    "DEVICE_MODEL",
+                                    "USER_AGENT",
+                                    "APP_BUNDLE",
+                                    "APP_NAME",
+                                    "COUNTRY",
+                                    "REGION",
+                                    "CITY",
+                                    "ZIP",
+                                    "DMA",
+                                    "LAT",
+                                    "LONG",
+                                    "DEVICE_ID",
+                                    "DEVICE_ID_TYPE",
+                                    "DOMAIN",
+                                    "PAGE_URL",
+                                    "REFERRER",
+                                    "KEYWORDS",
+                                    "PLACEMENT_ID",
+                                    "FOLD_POSITION",
+                                    "AD_WIDTH",
+                                    "AD_HEIGHT",
+                                    "VIDEO_ID",
+                                    "VIDEO_TITLE",
+                                    "VIDEO_DURATION",
+                                    "VIDEO_CATEGORY",
+                                    "CONTENT_GENRE",
+                                    "CONTENT_RATING",
+                                    "PLAYER_WIDTH",
+                                    "PLAYER_HEIGHT",
+                                    "POD_POSITION",
+                                    "POD_SIZE",
+                                    "AD_BREAK_ID",
+                                    "STATION_ID",
+                                    "COLLECTION_NAME",
+                                    "INSTALLMENT_ID",
+                                    "AUDIO_DURATION",
+                                    "TMPX",
+                                    "AXEM",
+                                    "CATALOG_ID",
+                                    "SKU",
+                                    "GTIN",
+                                    "OFFERING_ID",
+                                    "JOB_ID",
+                                    "HOTEL_ID",
+                                    "FLIGHT_ID",
+                                    "VEHICLE_ID",
+                                    "LISTING_ID",
+                                    "STORE_ID",
+                                    "PROGRAM_ID",
+                                    "DESTINATION_ID",
+                                    "CREATIVE_VARIANT_ID",
+                                    "APP_ITEM_ID"
+                                  ],
+                                  "enumDescriptions": {
+                                    "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                    "PACKAGE_ID": "AdCP package identifier",
+                                    "CREATIVE_ID": "AdCP creative identifier",
+                                    "CACHEBUSTER": "Random number to prevent caching",
+                                    "TIMESTAMP": "Unix timestamp in milliseconds",
+                                    "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                    "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                    "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                    "US_PRIVACY": "US Privacy (CCPA) string",
+                                    "GPP_STRING": "Global Privacy Platform consent string",
+                                    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                    "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                    "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                    "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                    "OS_VERSION": "OS version number",
+                                    "DEVICE_MAKE": "Device manufacturer",
+                                    "DEVICE_MODEL": "Device model identifier",
+                                    "USER_AGENT": "Full user agent string",
+                                    "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                    "APP_NAME": "Human-readable app name",
+                                    "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                    "REGION": "State/province/region code",
+                                    "CITY": "City name",
+                                    "ZIP": "Postal code",
+                                    "DMA": "Nielsen DMA code (US TV markets)",
+                                    "LAT": "Latitude coordinate",
+                                    "LONG": "Longitude coordinate",
+                                    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                    "DOMAIN": "Domain where ad is shown",
+                                    "PAGE_URL": "Full page URL (encoded)",
+                                    "REFERRER": "HTTP referrer URL",
+                                    "KEYWORDS": "Page keywords (comma-separated)",
+                                    "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                    "AD_WIDTH": "Ad slot width in pixels",
+                                    "AD_HEIGHT": "Ad slot height in pixels",
+                                    "VIDEO_ID": "Content video identifier",
+                                    "VIDEO_TITLE": "Content video title",
+                                    "VIDEO_DURATION": "Content duration in seconds",
+                                    "VIDEO_CATEGORY": "IAB content category",
+                                    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                    "PLAYER_WIDTH": "Video player width in pixels",
+                                    "PLAYER_HEIGHT": "Video player height in pixels",
+                                    "POD_POSITION": "Position within ad break",
+                                    "POD_SIZE": "Total ads in the ad break",
+                                    "AD_BREAK_ID": "Unique ad break identifier",
+                                    "STATION_ID": "Radio station or podcast identifier",
+                                    "COLLECTION_NAME": "Program or collection name",
+                                    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                    "AUDIO_DURATION": "Audio content duration in seconds",
+                                    "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                    "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                    "SKU": "Product SKU identifier for the catalog item being rendered",
+                                    "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                    "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                    "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                    "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                  }
+                                },
+                                {
+                                  "type": "string",
+                                  "description": "Custom or publisher-specific macro name"
+                                }
+                              ]
+                            },
+                            "description": "Universal macros that must be provided for webhook to function"
+                          },
+                          "response_type": {
+                            "title": "Webhook Response Type",
+                            "description": "Expected content type of webhook response",
+                            "type": "string",
+                            "enum": [
+                              "html",
+                              "json",
+                              "xml",
+                              "javascript"
+                            ]
+                          },
+                          "security": {
+                            "type": "object",
+                            "description": "Security configuration for webhook calls",
+                            "properties": {
+                              "method": {
+                                "title": "Webhook Security Method",
+                                "description": "Authentication method",
+                                "type": "string",
+                                "enum": [
+                                  "hmac_sha256",
+                                  "api_key",
+                                  "none"
+                                ]
+                              },
+                              "hmac_header": {
+                                "type": "string",
+                                "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                              },
+                              "api_key_header": {
+                                "type": "string",
+                                "description": "Header name for API key (e.g., 'X-API-Key')"
+                              }
+                            },
+                            "required": [
+                              "method"
+                            ]
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "url",
+                          "response_type",
+                          "security"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "CSS Asset",
+                        "description": "CSS stylesheet asset",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "CSS content"
+                          },
+                          "media": {
+                            "type": "string",
+                            "description": "CSS media query context (e.g., 'screen', 'print')"
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "DAAST Asset",
+                        "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "url",
+                                "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL endpoint that returns DAAST XML"
+                              },
+                              "daast_version": {
+                                "title": "DAAST Version",
+                                "description": "DAAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "1.0",
+                                  "1.1"
+                                ]
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected audio duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "DAAST Tracking Event",
+                                  "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "skip",
+                                    "progress",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this DAAST tag"
+                              },
+                              "companion_ads": {
+                                "type": "boolean",
+                                "description": "Whether companion display ads are included"
+                              },
+                              "transcript_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to text transcript of the audio content",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "delivery_type": {
+                                "type": "string",
+                                "const": "inline",
+                                "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                              },
+                              "content": {
+                                "type": "string",
+                                "description": "Inline DAAST XML content"
+                              },
+                              "daast_version": {
+                                "title": "DAAST Version",
+                                "description": "DAAST specification version",
+                                "type": "string",
+                                "enum": [
+                                  "1.0",
+                                  "1.1"
+                                ]
+                              },
+                              "duration_ms": {
+                                "type": "integer",
+                                "description": "Expected audio duration in milliseconds (if known)",
+                                "minimum": 0
+                              },
+                              "tracking_events": {
+                                "type": "array",
+                                "items": {
+                                  "title": "DAAST Tracking Event",
+                                  "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                  "type": "string",
+                                  "enum": [
+                                    "impression",
+                                    "creativeView",
+                                    "loaded",
+                                    "start",
+                                    "firstQuartile",
+                                    "midpoint",
+                                    "thirdQuartile",
+                                    "complete",
+                                    "mute",
+                                    "unmute",
+                                    "pause",
+                                    "resume",
+                                    "skip",
+                                    "progress",
+                                    "clickTracking",
+                                    "customClick",
+                                    "close",
+                                    "error",
+                                    "viewable",
+                                    "notViewable",
+                                    "viewUndetermined",
+                                    "measurableImpression",
+                                    "viewableImpression"
+                                  ]
+                                },
+                                "description": "Tracking events supported by this DAAST tag"
+                              },
+                              "companion_ads": {
+                                "type": "boolean",
+                                "description": "Whether companion display ads are included"
+                              },
+                              "transcript_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to text transcript of the audio content",
+                                "x-accessibility": true
+                              },
+                              "provenance": {
+                                "title": "Provenance",
+                                "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                "type": "object",
+                                "properties": {
+                                  "digital_source_type": {
+                                    "title": "Digital Source Type",
+                                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                    "type": "string",
+                                    "enum": [
+                                      "digital_capture",
+                                      "digital_creation",
+                                      "trained_algorithmic_media",
+                                      "composite_with_trained_algorithmic_media",
+                                      "algorithmic_media",
+                                      "composite_capture",
+                                      "composite_synthetic",
+                                      "human_edits",
+                                      "data_driven_media"
+                                    ],
+                                    "enumDescriptions": {
+                                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                      "composite_capture": "Multiple digital captures composited together without AI",
+                                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                    }
+                                  },
+                                  "ai_tool": {
+                                    "type": "object",
+                                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                    "properties": {
+                                      "name": {
+                                        "type": "string",
+                                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                      },
+                                      "version": {
+                                        "type": "string",
+                                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                      },
+                                      "provider": {
+                                        "type": "string",
+                                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                      }
+                                    },
+                                    "required": [
+                                      "name"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "human_oversight": {
+                                    "type": "string",
+                                    "description": "Level of human involvement in the AI-assisted creation process",
+                                    "enum": [
+                                      "none",
+                                      "prompt_only",
+                                      "selected",
+                                      "edited",
+                                      "directed"
+                                    ],
+                                    "enumDescriptions": {
+                                      "none": "Fully automated with no human involvement in generation",
+                                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                      "selected": "Human selected from multiple AI-generated candidates",
+                                      "edited": "Human edited or refined AI-generated output",
+                                      "directed": "Human directed the creative process with AI as an assistive tool"
+                                    }
+                                  },
+                                  "declared_by": {
+                                    "type": "object",
+                                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                    "properties": {
+                                      "agent_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL of the agent or service that declared this provenance"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "creator",
+                                          "advertiser",
+                                          "agency",
+                                          "platform",
+                                          "tool"
+                                        ],
+                                        "description": "Role of the declaring party in the supply chain",
+                                        "enumDescriptions": {
+                                          "creator": "The party that created or generated the content",
+                                          "advertiser": "The brand or advertiser that owns the content",
+                                          "agency": "Agency acting on behalf of the advertiser",
+                                          "platform": "Ad platform or publisher that processed the content",
+                                          "tool": "Automated tool or service that attached provenance metadata"
+                                        }
+                                      }
+                                    },
+                                    "required": [
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "declared_at": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                  },
+                                  "created_time": {
+                                    "type": "string",
+                                    "format": "date-time",
+                                    "description": "When this content was created or generated (ISO 8601)"
+                                  },
+                                  "c2pa": {
+                                    "type": "object",
+                                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                    "properties": {
+                                      "manifest_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the C2PA manifest store for this content"
+                                      }
+                                    },
+                                    "required": [
+                                      "manifest_url"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "disclosure": {
+                                    "type": "object",
+                                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                    "properties": {
+                                      "required": {
+                                        "type": "boolean",
+                                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                      },
+                                      "jurisdictions": {
+                                        "type": "array",
+                                        "description": "Jurisdictions where disclosure obligations apply",
+                                        "items": {
+                                          "type": "object",
+                                          "properties": {
+                                            "country": {
+                                              "type": "string",
+                                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                            },
+                                            "region": {
+                                              "type": "string",
+                                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                            },
+                                            "regulation": {
+                                              "type": "string",
+                                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                            },
+                                            "label_text": {
+                                              "type": "string",
+                                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                            },
+                                            "render_guidance": {
+                                              "type": "object",
+                                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                              "minProperties": 1,
+                                              "properties": {
+                                                "persistence": {
+                                                  "title": "Disclosure Persistence",
+                                                  "description": "How long the disclosure must persist during content playback or display",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "continuous",
+                                                    "initial",
+                                                    "flexible"
+                                                  ],
+                                                  "enumDescriptions": {
+                                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                  }
+                                                },
+                                                "min_duration_ms": {
+                                                  "type": "integer",
+                                                  "minimum": 1,
+                                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                },
+                                                "positions": {
+                                                  "type": "array",
+                                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                  "items": {
+                                                    "title": "Disclosure Position",
+                                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "prominent",
+                                                      "footer",
+                                                      "audio",
+                                                      "subtitle",
+                                                      "overlay",
+                                                      "end_card",
+                                                      "pre_roll",
+                                                      "companion"
+                                                    ]
+                                                  },
+                                                  "minItems": 1,
+                                                  "uniqueItems": true
+                                                },
+                                                "ext": {
+                                                  "title": "Extension Object",
+                                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                  "type": "object",
+                                                  "additionalProperties": true
+                                                }
+                                              },
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "required": [
+                                            "country",
+                                            "regulation"
+                                          ],
+                                          "additionalProperties": true
+                                        },
+                                        "minItems": 1
+                                      }
+                                    },
+                                    "required": [
+                                      "required"
+                                    ],
+                                    "additionalProperties": true
+                                  },
+                                  "verification": {
+                                    "type": "array",
+                                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                    "minItems": 1,
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "verified_by": {
+                                          "type": "string",
+                                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                        },
+                                        "verified_time": {
+                                          "type": "string",
+                                          "format": "date-time",
+                                          "description": "When the verification was performed (ISO 8601)"
+                                        },
+                                        "result": {
+                                          "type": "string",
+                                          "enum": [
+                                            "authentic",
+                                            "ai_generated",
+                                            "ai_modified",
+                                            "inconclusive"
+                                          ],
+                                          "description": "Verification outcome"
+                                        },
+                                        "confidence": {
+                                          "type": "number",
+                                          "minimum": 0,
+                                          "maximum": 1,
+                                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                        },
+                                        "details_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the full verification report"
+                                        }
+                                      },
+                                      "required": [
+                                        "verified_by",
+                                        "result"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "delivery_type",
+                              "content"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      {
+                        "title": "Markdown Asset",
+                        "description": "Markdown-formatted text content following CommonMark specification",
+                        "type": "object",
+                        "properties": {
+                          "content": {
+                            "type": "string",
+                            "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                          },
+                          "language": {
+                            "type": "string",
+                            "description": "Language code (e.g., 'en', 'es', 'fr')"
+                          },
+                          "markdown_flavor": {
+                            "title": "Markdown Flavor",
+                            "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                            "type": "string",
+                            "enum": [
+                              "commonmark",
+                              "gfm"
+                            ],
+                            "default": "commonmark"
+                          },
+                          "allow_raw_html": {
+                            "type": "boolean",
+                            "default": false,
+                            "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                          }
+                        },
+                        "required": [
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "title": "Brief Asset",
+                        "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                        "allOf": [
+                          {
+                            "title": "Creative Brief",
+                            "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                            "type": "object",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Campaign or flight name for identification"
+                              },
+                              "objective": {
+                                "type": "string",
+                                "enum": [
+                                  "awareness",
+                                  "consideration",
+                                  "conversion",
+                                  "retention",
+                                  "engagement"
+                                ],
+                                "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                              },
+                              "tone": {
+                                "type": "string",
+                                "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                              },
+                              "audience": {
+                                "type": "string",
+                                "description": "Target audience description for this campaign"
+                              },
+                              "territory": {
+                                "type": "string",
+                                "description": "Creative territory or positioning the campaign should occupy"
+                              },
+                              "messaging": {
+                                "type": "object",
+                                "description": "Messaging framework for the campaign",
+                                "properties": {
+                                  "headline": {
+                                    "type": "string",
+                                    "description": "Primary headline"
+                                  },
+                                  "tagline": {
+                                    "type": "string",
+                                    "description": "Supporting tagline or sub-headline"
+                                  },
+                                  "cta": {
+                                    "type": "string",
+                                    "description": "Call-to-action text"
+                                  },
+                                  "key_messages": {
+                                    "type": "array",
+                                    "description": "Key messages to communicate in priority order",
+                                    "items": {
+                                      "type": "string"
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "reference_assets": {
+                                "type": "array",
+                                "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                                "items": {
+                                  "title": "Reference Asset",
+                                  "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                  "type": "object",
+                                  "properties": {
+                                    "url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the reference asset (image, video, or document)"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "style_reference",
+                                        "product_shot",
+                                        "mood_board",
+                                        "example_creative",
+                                        "logo",
+                                        "strategy_doc",
+                                        "storyboard"
+                                      ],
+                                      "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                    },
+                                    "description": {
+                                      "type": "string",
+                                      "description": "Human-readable description of the asset and how it should inform creative generation"
+                                    }
+                                  },
+                                  "required": [
+                                    "url",
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "compliance": {
+                                "type": "object",
+                                "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                                "properties": {
+                                  "required_disclosures": {
+                                    "type": "array",
+                                    "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "text": {
+                                          "type": "string",
+                                          "description": "The disclosure text that must appear in the creative"
+                                        },
+                                        "position": {
+                                          "title": "Disclosure Position",
+                                          "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                          "type": "string",
+                                          "enum": [
+                                            "prominent",
+                                            "footer",
+                                            "audio",
+                                            "subtitle",
+                                            "overlay",
+                                            "end_card",
+                                            "pre_roll",
+                                            "companion"
+                                          ]
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                          "items": {
+                                            "type": "string",
+                                            "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                          },
+                                          "minItems": 1
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                        },
+                                        "language": {
+                                          "type": "string",
+                                          "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                        },
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "text"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  },
+                                  "prohibited_claims": {
+                                    "type": "array",
+                                    "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                    "items": {
+                                      "type": "string"
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      {
+                        "title": "Catalog Asset",
+                        "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                        "allOf": [
+                          {
+                            "title": "Catalog",
+                            "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                            "type": "object",
+                            "properties": {
+                              "catalog_id": {
+                                "type": "string",
+                                "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                              },
+                              "type": {
+                                "title": "Catalog Type",
+                                "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                                "type": "string",
+                                "enum": [
+                                  "offering",
+                                  "product",
+                                  "inventory",
+                                  "store",
+                                  "promotion",
+                                  "hotel",
+                                  "flight",
+                                  "job",
+                                  "vehicle",
+                                  "real_estate",
+                                  "education",
+                                  "destination",
+                                  "app"
+                                ]
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                              },
+                              "feed_format": {
+                                "title": "Feed Format",
+                                "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                                "type": "string",
+                                "enum": [
+                                  "google_merchant_center",
+                                  "facebook_catalog",
+                                  "shopify",
+                                  "linkedin_jobs",
+                                  "custom"
+                                ]
+                              },
+                              "update_frequency": {
+                                "title": "Update Frequency",
+                                "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                                "type": "string",
+                                "enum": [
+                                  "realtime",
+                                  "hourly",
+                                  "daily",
+                                  "weekly"
+                                ]
+                              },
+                              "items": {
+                                "type": "array",
+                                "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                                "items": {
+                                  "type": "object"
+                                },
+                                "minItems": 1
+                              },
+                              "ids": {
+                                "type": "array",
+                                "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                                "items": {
+                                  "type": "string"
+                                },
+                                "minItems": 1
+                              },
+                              "gtins": {
+                                "type": "array",
+                                "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                                "items": {
+                                  "type": "string",
+                                  "pattern": "^[0-9]{8,14}$"
+                                },
+                                "minItems": 1
+                              },
+                              "tags": {
+                                "type": "array",
+                                "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                                "items": {
+                                  "type": "string"
+                                },
+                                "minItems": 1
+                              },
+                              "category": {
+                                "type": "string",
+                                "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                              },
+                              "query": {
+                                "type": "string",
+                                "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                              },
+                              "conversion_events": {
+                                "type": "array",
+                                "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                                "items": {
+                                  "title": "Event Type",
+                                  "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                  "type": "string",
+                                  "enum": [
+                                    "page_view",
+                                    "view_content",
+                                    "select_content",
+                                    "select_item",
+                                    "search",
+                                    "share",
+                                    "add_to_cart",
+                                    "remove_from_cart",
+                                    "viewed_cart",
+                                    "add_to_wishlist",
+                                    "initiate_checkout",
+                                    "add_payment_info",
+                                    "purchase",
+                                    "refund",
+                                    "lead",
+                                    "qualify_lead",
+                                    "close_convert_lead",
+                                    "disqualify_lead",
+                                    "complete_registration",
+                                    "subscribe",
+                                    "start_trial",
+                                    "app_install",
+                                    "app_launch",
+                                    "contact",
+                                    "schedule",
+                                    "donate",
+                                    "submit_application",
+                                    "custom"
+                                  ],
+                                  "enumDescriptions": {
+                                    "page_view": "User viewed a page",
+                                    "view_content": "User viewed specific content (product, article, etc.)",
+                                    "select_content": "User selected or clicked on content (article, video, etc.)",
+                                    "select_item": "User selected a specific product or item from a list",
+                                    "search": "User performed a search",
+                                    "share": "User shared content via social or messaging",
+                                    "add_to_cart": "User added an item to cart",
+                                    "remove_from_cart": "User removed an item from cart",
+                                    "viewed_cart": "User viewed their shopping cart",
+                                    "add_to_wishlist": "User added an item to a wishlist",
+                                    "initiate_checkout": "User started checkout process",
+                                    "add_payment_info": "User added payment information",
+                                    "purchase": "User completed a purchase",
+                                    "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                    "lead": "User expressed interest (form submission, signup, etc.)",
+                                    "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                    "close_convert_lead": "Lead converted to a customer or closed deal",
+                                    "disqualify_lead": "Lead disqualified or marked as not viable",
+                                    "complete_registration": "User completed account registration",
+                                    "subscribe": "User subscribed to a service or newsletter",
+                                    "start_trial": "User started a free trial",
+                                    "app_install": "User installed an application",
+                                    "app_launch": "User launched an application",
+                                    "contact": "User initiated contact (call, message, etc.)",
+                                    "schedule": "User scheduled an appointment or event",
+                                    "donate": "User made a donation",
+                                    "submit_application": "User submitted an application (loan, job, etc.)",
+                                    "custom": "Custom event type (specify in custom_event_name)"
+                                  }
+                                },
+                                "minItems": 1,
+                                "uniqueItems": true
+                              },
+                              "content_id_type": {
+                                "title": "Content ID Type",
+                                "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                                "type": "string",
+                                "enum": [
+                                  "sku",
+                                  "gtin",
+                                  "offering_id",
+                                  "job_id",
+                                  "hotel_id",
+                                  "flight_id",
+                                  "vehicle_id",
+                                  "listing_id",
+                                  "store_id",
+                                  "program_id",
+                                  "destination_id",
+                                  "app_id"
+                                ]
+                              },
+                              "feed_field_mappings": {
+                                "type": "array",
+                                "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                                "items": {
+                                  "title": "Catalog Field Mapping",
+                                  "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                  "type": "object",
+                                  "properties": {
+                                    "feed_field": {
+                                      "type": "string",
+                                      "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                    },
+                                    "catalog_field": {
+                                      "type": "string",
+                                      "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                    },
+                                    "asset_group_id": {
+                                      "type": "string",
+                                      "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                    },
+                                    "value": {
+                                      "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                    },
+                                    "transform": {
+                                      "type": "string",
+                                      "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                      "enum": [
+                                        "date",
+                                        "divide",
+                                        "boolean",
+                                        "split"
+                                      ]
+                                    },
+                                    "format": {
+                                      "type": "string",
+                                      "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                    },
+                                    "timezone": {
+                                      "type": "string",
+                                      "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                    },
+                                    "by": {
+                                      "type": "number",
+                                      "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                      "exclusiveMinimum": 0
+                                    },
+                                    "separator": {
+                                      "type": "string",
+                                      "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                      "default": ","
+                                    },
+                                    "default": {
+                                      "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "allOf": [
+                                    {
+                                      "not": {
+                                        "required": [
+                                          "feed_field",
+                                          "value"
+                                        ]
+                                      }
+                                    },
+                                    {
+                                      "not": {
+                                        "required": [
+                                          "catalog_field",
+                                          "asset_group_id"
+                                        ]
+                                      }
+                                    }
+                                  ],
+                                  "additionalProperties": true,
+                                  "examples": [
+                                    {
+                                      "description": "Simple field rename",
+                                      "data": {
+                                        "feed_field": "hotel_name",
+                                        "catalog_field": "name"
+                                      }
+                                    },
+                                    {
+                                      "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                      "data": {
+                                        "feed_field": "available_from",
+                                        "catalog_field": "valid_from",
+                                        "transform": "date",
+                                        "format": "YYYYMMDD",
+                                        "timezone": "UTC"
+                                      }
+                                    },
+                                    {
+                                      "description": "Divide cents to dollars",
+                                      "data": {
+                                        "feed_field": "price_cents",
+                                        "catalog_field": "price.amount",
+                                        "transform": "divide",
+                                        "by": 100
+                                      }
+                                    },
+                                    {
+                                      "description": "Static literal injection \u2014 currency not in feed",
+                                      "data": {
+                                        "catalog_field": "price.currency",
+                                        "value": "USD"
+                                      }
+                                    },
+                                    {
+                                      "description": "Image URL assigned to typed asset pool",
+                                      "data": {
+                                        "feed_field": "primary_photo_url",
+                                        "asset_group_id": "images_landscape"
+                                      }
+                                    },
+                                    {
+                                      "description": "Vertical photo URL assigned to vertical pool",
+                                      "data": {
+                                        "feed_field": "portrait_photo_url",
+                                        "asset_group_id": "images_vertical"
+                                      }
+                                    },
+                                    {
+                                      "description": "Split comma-separated tags to array",
+                                      "data": {
+                                        "feed_field": "amenity_list",
+                                        "catalog_field": "amenities",
+                                        "transform": "split",
+                                        "separator": ","
+                                      }
+                                    },
+                                    {
+                                      "description": "Boolean coercion with default",
+                                      "data": {
+                                        "feed_field": "is_available",
+                                        "catalog_field": "available",
+                                        "transform": "boolean",
+                                        "default": false
+                                      }
+                                    }
+                                  ]
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "type"
+                            ],
+                            "additionalProperties": true,
+                            "examples": [
+                              {
+                                "description": "Synced product catalog from Google Merchant Center",
+                                "data": {
+                                  "catalog_id": "gmc-primary",
+                                  "name": "Primary Product Feed",
+                                  "type": "product",
+                                  "url": "https://feeds.acmecorp.com/products.xml",
+                                  "feed_format": "google_merchant_center",
+                                  "update_frequency": "daily"
+                                }
+                              },
+                              {
+                                "description": "Inventory feed for store-level stock data",
+                                "data": {
+                                  "catalog_id": "store-inventory",
+                                  "name": "Store Inventory",
+                                  "type": "inventory",
+                                  "url": "https://feeds.acmecorp.com/inventory.json",
+                                  "feed_format": "custom",
+                                  "update_frequency": "hourly"
+                                }
+                              },
+                              {
+                                "description": "Store locator feed",
+                                "data": {
+                                  "catalog_id": "retail-locations",
+                                  "name": "Retail Locations",
+                                  "type": "store",
+                                  "url": "https://feeds.acmecorp.com/stores.json",
+                                  "feed_format": "custom",
+                                  "update_frequency": "weekly"
+                                }
+                              },
+                              {
+                                "description": "Promotional pricing feed",
+                                "data": {
+                                  "catalog_id": "summer-sale",
+                                  "name": "Summer Sale Promotions",
+                                  "type": "promotion",
+                                  "url": "https://feeds.acmecorp.com/promotions.json",
+                                  "feed_format": "google_merchant_center",
+                                  "update_frequency": "daily"
+                                }
+                              },
+                              {
+                                "description": "Inline offering catalog (no sync needed)",
+                                "data": {
+                                  "type": "offering",
+                                  "items": [
+                                    {
+                                      "offering_id": "summer-sale",
+                                      "name": "Summer Sale",
+                                      "landing_url": "https://acme.com/summer"
+                                    }
+                                  ]
+                                }
+                              },
+                              {
+                                "description": "Reference to a previously synced catalog by ID",
+                                "data": {
+                                  "catalog_id": "gmc-primary",
+                                  "type": "product",
+                                  "ids": [
+                                    "SKU-12345",
+                                    "SKU-67890"
+                                  ]
+                                }
+                              },
+                              {
+                                "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                                "data": {
+                                  "type": "product",
+                                  "gtins": [
+                                    "00013000006040",
+                                    "00013000006057"
+                                  ],
+                                  "content_id_type": "gtin",
+                                  "conversion_events": [
+                                    "purchase",
+                                    "add_to_cart"
+                                  ]
+                                }
+                              },
+                              {
+                                "description": "Inline store catalog with catchment areas",
+                                "data": {
+                                  "catalog_id": "retail-locations",
+                                  "name": "Retail Locations",
+                                  "type": "store",
+                                  "items": [
+                                    {
+                                      "store_id": "amsterdam-flagship",
+                                      "name": "Amsterdam Flagship",
+                                      "location": {
+                                        "lat": 52.3676,
+                                        "lng": 4.9041
+                                      },
+                                      "catchments": [
+                                        {
+                                          "catchment_id": "walk",
+                                          "travel_time": {
+                                            "value": 10,
+                                            "unit": "min"
+                                          },
+                                          "transport_mode": "walking"
+                                        },
+                                        {
+                                          "catchment_id": "drive",
+                                          "travel_time": {
+                                            "value": 15,
+                                            "unit": "min"
+                                          },
+                                          "transport_mode": "driving"
+                                        }
+                                      ]
+                                    }
+                                  ]
+                                }
+                              }
+                            ]
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                "additionalProperties": true
+              },
+              "rights": {
+                "type": "array",
+                "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                "items": {
+                  "title": "Rights Constraint",
+                  "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+                  "type": "object",
+                  "properties": {
+                    "rights_id": {
+                      "type": "string",
+                      "description": "Rights grant identifier from the acquire_rights response"
+                    },
+                    "rights_agent": {
+                      "type": "object",
+                      "description": "The agent that granted these rights",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "MCP endpoint URL of the rights agent"
+                        },
+                        "id": {
+                          "type": "string",
+                          "description": "Agent identifier"
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "id"
+                      ]
+                    },
+                    "valid_from": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "Start of the rights validity period"
+                    },
+                    "valid_until": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "End of the rights validity period. Creative should not be served after this time."
+                    },
+                    "uses": {
+                      "type": "array",
+                      "description": "Rights uses covered by this constraint",
+                      "items": {
+                        "title": "Right Use",
+                        "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+                        "type": "string",
+                        "enum": [
+                          "likeness",
+                          "voice",
+                          "name",
+                          "endorsement",
+                          "motion_capture",
+                          "signature",
+                          "catchphrase",
+                          "sync",
+                          "background_music",
+                          "editorial",
+                          "commercial"
+                        ],
+                        "enumDescriptions": {
+                          "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+                          "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+                          "name": "Use of a person's name in advertising or promotional materials",
+                          "endorsement": "Implied or explicit endorsement of a product or service by a person",
+                          "motion_capture": "Use of a person's movement patterns for animation or video",
+                          "signature": "Use of a person's signature or autograph",
+                          "catchphrase": "Use of a person's well-known phrases or sayings",
+                          "sync": "Synchronization of music with visual media (ads, video)",
+                          "background_music": "Use of music as background audio in advertising",
+                          "editorial": "Use in editorial or informational contexts",
+                          "commercial": "Use in commercial advertising and promotional contexts"
+                        }
+                      },
+                      "minItems": 1
+                    },
+                    "countries": {
+                      "type": "array",
+                      "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[A-Z]{2}$"
+                      }
+                    },
+                    "excluded_countries": {
+                      "type": "array",
+                      "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[A-Z]{2}$"
+                      }
+                    },
+                    "impression_cap": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+                    },
+                    "right_type": {
+                      "title": "Right Type",
+                      "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.",
+                      "type": "string",
+                      "enum": [
+                        "talent",
+                        "character",
+                        "brand_ip",
+                        "music",
+                        "stock_media"
+                      ],
+                      "enumDescriptions": {
+                        "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+                        "character": "Rights to fictional characters for advertising or co-branding",
+                        "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+                        "music": "Rights to musical compositions or recordings (sync, background music)",
+                        "stock_media": "Rights to stock photography, video, or audio collections"
+                      }
+                    },
+                    "approval_status": {
+                      "type": "string",
+                      "enum": [
+                        "pending",
+                        "approved",
+                        "rejected"
+                      ],
+                      "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
+                    },
+                    "verification_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "rights_id",
+                    "rights_agent",
+                    "uses"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "industry_identifiers": {
+                "type": "array",
+                "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+                "items": {
+                  "title": "Industry Identifier",
+                  "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "title": "Creative Identifier Type",
+                      "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                      "type": "string",
+                      "enum": [
+                        "ad_id",
+                        "isci",
+                        "clearcast_clock"
+                      ],
+                      "enumDescriptions": {
+                        "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                        "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                        "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                      },
+                      "examples": [
+                        "ad_id",
+                        "isci",
+                        "clearcast_clock"
+                      ]
+                    },
+                    "value": {
+                      "type": "string",
+                      "maxLength": 64,
+                      "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "value"
+                  ],
+                  "additionalProperties": true
+                },
+                "uniqueItems": true
+              },
+              "provenance": {
+                "title": "Provenance",
+                "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).",
+                "type": "object",
+                "properties": {
+                  "digital_source_type": {
+                    "title": "Digital Source Type",
+                    "description": "IPTC-aligned classification of AI involvement in producing this content",
+                    "type": "string",
+                    "enum": [
+                      "digital_capture",
+                      "digital_creation",
+                      "trained_algorithmic_media",
+                      "composite_with_trained_algorithmic_media",
+                      "algorithmic_media",
+                      "composite_capture",
+                      "composite_synthetic",
+                      "human_edits",
+                      "data_driven_media"
+                    ],
+                    "enumDescriptions": {
+                      "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                      "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                      "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                      "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                      "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                      "composite_capture": "Multiple digital captures composited together without AI",
+                      "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                      "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                      "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                    }
+                  },
+                  "ai_tool": {
+                    "type": "object",
+                    "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                      },
+                      "version": {
+                        "type": "string",
+                        "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                      },
+                      "provider": {
+                        "type": "string",
+                        "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "human_oversight": {
+                    "type": "string",
+                    "description": "Level of human involvement in the AI-assisted creation process",
+                    "enum": [
+                      "none",
+                      "prompt_only",
+                      "selected",
+                      "edited",
+                      "directed"
+                    ],
+                    "enumDescriptions": {
+                      "none": "Fully automated with no human involvement in generation",
+                      "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                      "selected": "Human selected from multiple AI-generated candidates",
+                      "edited": "Human edited or refined AI-generated output",
+                      "directed": "Human directed the creative process with AI as an assistive tool"
+                    }
+                  },
+                  "declared_by": {
+                    "type": "object",
+                    "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent or service that declared this provenance"
+                      },
+                      "role": {
+                        "type": "string",
+                        "enum": [
+                          "creator",
+                          "advertiser",
+                          "agency",
+                          "platform",
+                          "tool"
+                        ],
+                        "description": "Role of the declaring party in the supply chain",
+                        "enumDescriptions": {
+                          "creator": "The party that created or generated the content",
+                          "advertiser": "The brand or advertiser that owns the content",
+                          "agency": "Agency acting on behalf of the advertiser",
+                          "platform": "Ad platform or publisher that processed the content",
+                          "tool": "Automated tool or service that attached provenance metadata"
+                        }
+                      }
+                    },
+                    "required": [
+                      "role"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "declared_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                  },
+                  "created_time": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this content was created or generated (ISO 8601)"
+                  },
+                  "c2pa": {
+                    "type": "object",
+                    "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                    "properties": {
+                      "manifest_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the C2PA manifest store for this content"
+                      }
+                    },
+                    "required": [
+                      "manifest_url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "disclosure": {
+                    "type": "object",
+                    "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                    "properties": {
+                      "required": {
+                        "type": "boolean",
+                        "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                      },
+                      "jurisdictions": {
+                        "type": "array",
+                        "description": "Jurisdictions where disclosure obligations apply",
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "country": {
+                              "type": "string",
+                              "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                            },
+                            "region": {
+                              "type": "string",
+                              "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                            },
+                            "regulation": {
+                              "type": "string",
+                              "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                            },
+                            "label_text": {
+                              "type": "string",
+                              "description": "Required disclosure label text for this jurisdiction, in the local language"
+                            },
+                            "render_guidance": {
+                              "type": "object",
+                              "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                              "minProperties": 1,
+                              "properties": {
+                                "persistence": {
+                                  "title": "Disclosure Persistence",
+                                  "description": "How long the disclosure must persist during content playback or display",
+                                  "type": "string",
+                                  "enum": [
+                                    "continuous",
+                                    "initial",
+                                    "flexible"
+                                  ],
+                                  "enumDescriptions": {
+                                    "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                  }
+                                },
+                                "min_duration_ms": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                },
+                                "positions": {
+                                  "type": "array",
+                                  "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                  "items": {
+                                    "title": "Disclosure Position",
+                                    "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                    "type": "string",
+                                    "enum": [
+                                      "prominent",
+                                      "footer",
+                                      "audio",
+                                      "subtitle",
+                                      "overlay",
+                                      "end_card",
+                                      "pre_roll",
+                                      "companion"
+                                    ]
+                                  },
+                                  "minItems": 1,
+                                  "uniqueItems": true
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "country",
+                            "regulation"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "minItems": 1
+                      }
+                    },
+                    "required": [
+                      "required"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "verification": {
+                    "type": "array",
+                    "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                    "minItems": 1,
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "verified_by": {
+                          "type": "string",
+                          "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                        },
+                        "verified_time": {
+                          "type": "string",
+                          "format": "date-time",
+                          "description": "When the verification was performed (ISO 8601)"
+                        },
+                        "result": {
+                          "type": "string",
+                          "enum": [
+                            "authentic",
+                            "ai_generated",
+                            "ai_modified",
+                            "inconclusive"
+                          ],
+                          "description": "Verification outcome"
+                        },
+                        "confidence": {
+                          "type": "number",
+                          "minimum": 0,
+                          "maximum": 1,
+                          "description": "Confidence score of the verification result (0.0 to 1.0)"
+                        },
+                        "details_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the full verification report"
+                        }
+                      },
+                      "required": [
+                        "verified_by",
+                        "result"
+                      ],
+                      "additionalProperties": true
+                    }
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "additionalProperties": true
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "assets"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1,
+          "description": "Array of generated creative manifests, one per requested format. Each manifest contains its own format_id identifying which format it was generated for."
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when the earliest generated asset URL expires across all manifests. Re-build after this time to get fresh URLs."
+        },
+        "preview": {
+          "type": "object",
+          "description": "Preview renders included when the request set include_preview to true and the agent supports it. Contains one default preview per requested format. preview_inputs is ignored for multi-format requests.",
+          "properties": {
+            "previews": {
+              "type": "array",
+              "description": "Array of preview entries, one per requested format. Array order matches creative_manifests. Each entry includes a format_id for explicit correlation.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "preview_id": {
+                    "type": "string",
+                    "description": "Unique identifier for this preview"
+                  },
+                  "format_id": {
+                    "title": "Format ID",
+                    "description": "The format this preview was generated for. Matches one of the requested target_format_ids.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  },
+                  "renders": {
+                    "type": "array",
+                    "description": "Array of rendered pieces for this format's preview. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
+                    "items": {
+                      "title": "Preview Render",
+                      "description": "A single rendered piece of a creative preview with discriminated output format",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "URL-only preview format",
+                          "properties": {
+                            "render_id": {
+                              "type": "string",
+                              "description": "Unique identifier for this rendered piece within the variant"
+                            },
+                            "output_format": {
+                              "type": "string",
+                              "const": "url",
+                              "description": "Discriminator indicating preview_url is provided"
+                            },
+                            "preview_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                            },
+                            "role": {
+                              "type": "string",
+                              "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                            },
+                            "dimensions": {
+                              "type": "object",
+                              "description": "Dimensions for this rendered piece",
+                              "properties": {
+                                "width": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "height": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "width",
+                                "height"
+                              ]
+                            },
+                            "embedding": {
+                              "type": "object",
+                              "description": "Optional security and embedding metadata for safe iframe integration",
+                              "properties": {
+                                "recommended_sandbox": {
+                                  "type": "string",
+                                  "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                },
+                                "requires_https": {
+                                  "type": "boolean",
+                                  "description": "Whether this output requires HTTPS for secure embedding"
+                                },
+                                "supports_fullscreen": {
+                                  "type": "boolean",
+                                  "description": "Whether this output supports fullscreen mode"
+                                },
+                                "csp_policy": {
+                                  "type": "string",
+                                  "description": "Content Security Policy requirements for embedding"
+                                }
+                              }
+                            }
+                          },
+                          "required": [
+                            "render_id",
+                            "output_format",
+                            "preview_url",
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "HTML-only preview format",
+                          "properties": {
+                            "render_id": {
+                              "type": "string",
+                              "description": "Unique identifier for this rendered piece within the variant"
+                            },
+                            "output_format": {
+                              "type": "string",
+                              "const": "html",
+                              "description": "Discriminator indicating preview_html is provided"
+                            },
+                            "preview_html": {
+                              "type": "string",
+                              "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                            },
+                            "role": {
+                              "type": "string",
+                              "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                            },
+                            "dimensions": {
+                              "type": "object",
+                              "description": "Dimensions for this rendered piece",
+                              "properties": {
+                                "width": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "height": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "width",
+                                "height"
+                              ]
+                            },
+                            "embedding": {
+                              "type": "object",
+                              "description": "Optional security and embedding metadata",
+                              "properties": {
+                                "recommended_sandbox": {
+                                  "type": "string",
+                                  "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                },
+                                "requires_https": {
+                                  "type": "boolean",
+                                  "description": "Whether this output requires HTTPS for secure embedding"
+                                },
+                                "supports_fullscreen": {
+                                  "type": "boolean",
+                                  "description": "Whether this output supports fullscreen mode"
+                                },
+                                "csp_policy": {
+                                  "type": "string",
+                                  "description": "Content Security Policy requirements for embedding"
+                                }
+                              }
+                            }
+                          },
+                          "required": [
+                            "render_id",
+                            "output_format",
+                            "preview_html",
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Both URL and HTML preview format",
+                          "properties": {
+                            "render_id": {
+                              "type": "string",
+                              "description": "Unique identifier for this rendered piece within the variant"
+                            },
+                            "output_format": {
+                              "type": "string",
+                              "const": "both",
+                              "description": "Discriminator indicating both preview_url and preview_html are provided"
+                            },
+                            "preview_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+                            },
+                            "preview_html": {
+                              "type": "string",
+                              "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+                            },
+                            "role": {
+                              "type": "string",
+                              "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+                            },
+                            "dimensions": {
+                              "type": "object",
+                              "description": "Dimensions for this rendered piece",
+                              "properties": {
+                                "width": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "height": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "width",
+                                "height"
+                              ]
+                            },
+                            "embedding": {
+                              "type": "object",
+                              "description": "Optional security and embedding metadata for safe iframe integration",
+                              "properties": {
+                                "recommended_sandbox": {
+                                  "type": "string",
+                                  "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+                                },
+                                "requires_https": {
+                                  "type": "boolean",
+                                  "description": "Whether this output requires HTTPS for secure embedding"
+                                },
+                                "supports_fullscreen": {
+                                  "type": "boolean",
+                                  "description": "Whether this output supports fullscreen mode"
+                                },
+                                "csp_policy": {
+                                  "type": "string",
+                                  "description": "Content Security Policy requirements for embedding"
+                                }
+                              }
+                            }
+                          },
+                          "required": [
+                            "render_id",
+                            "output_format",
+                            "preview_url",
+                            "preview_html",
+                            "role"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "input": {
+                    "type": "object",
+                    "description": "The input parameters that generated this preview. For multi-format responses, this is always a default input.",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Human-readable name for this preview"
+                      },
+                      "macros": {
+                        "type": "object",
+                        "description": "Macro values applied to this preview",
+                        "additionalProperties": {
+                          "type": "string"
+                        }
+                      },
+                      "context_description": {
+                        "type": "string",
+                        "description": "Context description applied to this preview"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "preview_id",
+                  "format_id",
+                  "renders",
+                  "input"
+                ]
+              },
+              "minItems": 1
+            },
+            "interactive_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "Optional URL to an interactive testing page that shows all format previews with controls to switch between them."
+            },
+            "expires_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
+            }
+          },
+          "required": [
+            "previews",
+            "expires_at"
+          ]
+        },
+        "preview_error": {
+          "title": "Error",
+          "description": "When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Omitted when preview succeeded or was not requested.",
+          "type": "object",
+          "properties": {
+            "code": {
+              "type": "string",
+              "minLength": 1,
+              "maxLength": 64,
+              "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+            },
+            "message": {
+              "type": "string",
+              "description": "Human-readable error message"
+            },
+            "field": {
+              "type": "string",
+              "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+            },
+            "suggestion": {
+              "type": "string",
+              "description": "Suggested fix for the error"
+            },
+            "retry_after": {
+              "type": "number",
+              "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+              "minimum": 1,
+              "maximum": 3600
+            },
+            "details": {
+              "type": "object",
+              "description": "Additional task-specific error details",
+              "additionalProperties": true
+            },
+            "recovery": {
+              "type": "string",
+              "enum": [
+                "transient",
+                "correctable",
+                "terminal"
+              ],
+              "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+            }
+          },
+          "required": [
+            "code",
+            "message"
+          ],
+          "additionalProperties": true
+        },
+        "pricing_option_id": {
+          "type": "string",
+          "description": "Which rate card pricing option was applied for this build. Represents the total cost of the entire multi-format build call. Present when the creative agent charges for its services."
+        },
+        "vendor_cost": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Total cost incurred for this multi-format build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time."
+        },
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code for vendor_cost."
+        },
+        "consumption": {
+          "title": "Creative Consumption",
+          "description": "Structured consumption details for this build. Informational \u2014 lets the buyer verify that vendor_cost is consistent with the rate card.",
+          "type": "object",
+          "properties": {
+            "tokens": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "LLM or generation tokens consumed during creative generation."
+            },
+            "images_generated": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of images produced during generation."
+            },
+            "renders": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of render passes performed (video, animation)."
+            },
+            "duration_seconds": {
+              "type": "number",
+              "minimum": 0,
+              "description": "Processing time billed, in seconds. For compute-time pricing models."
+            }
+          },
+          "additionalProperties": true
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "creative_manifests"
+      ],
+      "additionalProperties": true
+    },
+    {
+      "title": "BuildCreativeError",
+      "description": "Error response - creative generation failed",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Array of errors explaining why creative generation failed",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.342Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/create-media-buy-request.json b/schemas/cache/bundled/media-buy/create-media-buy-request.json
new file mode 100644
index 000000000..80526d040
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/create-media-buy-request.json
@@ -0,0 +1,9170 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Media Buy Request",
+  "description": "Request parameters for creating a media buy. Supports two modes: (1) Manual mode - provide packages array with explicit line item configurations, or (2) Proposal mode - provide proposal_id and total_budget to execute a proposal from get_products. One of packages or proposal_id must be provided.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. If a request with the same idempotency_key and account has already been processed, the seller returns the existing media buy rather than creating a duplicate. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "plan_id": {
+      "type": "string",
+      "description": "Campaign governance plan identifier. Required when the account has governance_agents. The seller includes this in the committed check_governance request so the governance agent can validate against the correct plan."
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account to bill for this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "proposal_id": {
+      "type": "string",
+      "description": "ID of a proposal from get_products to execute. When provided with total_budget, the publisher converts the proposal's allocation percentages into packages automatically. Alternative to providing packages array."
+    },
+    "total_budget": {
+      "type": "object",
+      "description": "Total budget for the media buy when executing a proposal. The publisher applies the proposal's allocation percentages to this amount to derive package budgets.",
+      "properties": {
+        "amount": {
+          "type": "number",
+          "description": "Total budget amount",
+          "minimum": 0
+        },
+        "currency": {
+          "type": "string",
+          "description": "ISO 4217 currency code"
+        }
+      },
+      "required": [
+        "amount",
+        "currency"
+      ],
+      "additionalProperties": false
+    },
+    "packages": {
+      "type": "array",
+      "description": "Array of package configurations. Required when not using proposal_id. When executing a proposal, this can be omitted and packages will be derived from the proposal's allocations.",
+      "items": {
+        "title": "Package Request",
+        "description": "Package configuration for media buy creation",
+        "type": "object",
+        "properties": {
+          "adcp_major_version": {
+            "type": "integer",
+            "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            "minimum": 1,
+            "maximum": 99
+          },
+          "product_id": {
+            "type": "string",
+            "description": "Product ID for this package"
+          },
+          "format_ids": {
+            "type": "array",
+            "description": "Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.",
+            "items": {
+              "title": "Format ID",
+              "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            },
+            "minItems": 1
+          },
+          "budget": {
+            "type": "number",
+            "description": "Budget allocation for this package in the media buy's currency",
+            "minimum": 0
+          },
+          "pacing": {
+            "title": "Pacing",
+            "description": "Budget pacing strategy",
+            "type": "string",
+            "enum": [
+              "even",
+              "asap",
+              "front_loaded"
+            ],
+            "enumDescriptions": {
+              "even": "Allocate remaining budget evenly over remaining campaign duration (default)",
+              "asap": "Spend remaining budget as quickly as possible",
+              "front_loaded": "Allocate more remaining budget earlier in the remaining campaign period"
+            }
+          },
+          "pricing_option_id": {
+            "type": "string",
+            "description": "ID of the selected pricing option from the product's pricing_options array"
+          },
+          "bid_price": {
+            "type": "number",
+            "description": "Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            "minimum": 0
+          },
+          "impressions": {
+            "type": "number",
+            "description": "Impression goal for this package",
+            "minimum": 0
+          },
+          "start_time": {
+            "type": "string",
+            "format": "date-time",
+            "not": {
+              "const": "asap"
+            },
+            "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
+          },
+          "end_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
+          },
+          "paused": {
+            "type": "boolean",
+            "description": "Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.",
+            "default": false
+          },
+          "catalogs": {
+            "type": "array",
+            "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.",
+            "items": {
+              "title": "Catalog",
+              "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+              "type": "object",
+              "properties": {
+                "catalog_id": {
+                  "type": "string",
+                  "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                },
+                "type": {
+                  "title": "Catalog Type",
+                  "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                  "type": "string",
+                  "enum": [
+                    "offering",
+                    "product",
+                    "inventory",
+                    "store",
+                    "promotion",
+                    "hotel",
+                    "flight",
+                    "job",
+                    "vehicle",
+                    "real_estate",
+                    "education",
+                    "destination",
+                    "app"
+                  ]
+                },
+                "url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                },
+                "feed_format": {
+                  "title": "Feed Format",
+                  "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                  "type": "string",
+                  "enum": [
+                    "google_merchant_center",
+                    "facebook_catalog",
+                    "shopify",
+                    "linkedin_jobs",
+                    "custom"
+                  ]
+                },
+                "update_frequency": {
+                  "title": "Update Frequency",
+                  "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                  "type": "string",
+                  "enum": [
+                    "realtime",
+                    "hourly",
+                    "daily",
+                    "weekly"
+                  ]
+                },
+                "items": {
+                  "type": "array",
+                  "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                  "items": {
+                    "type": "object"
+                  },
+                  "minItems": 1
+                },
+                "ids": {
+                  "type": "array",
+                  "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "gtins": {
+                  "type": "array",
+                  "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                  "items": {
+                    "type": "string",
+                    "pattern": "^[0-9]{8,14}$"
+                  },
+                  "minItems": 1
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "category": {
+                  "type": "string",
+                  "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                },
+                "query": {
+                  "type": "string",
+                  "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                },
+                "conversion_events": {
+                  "type": "array",
+                  "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                  "items": {
+                    "title": "Event Type",
+                    "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                    "type": "string",
+                    "enum": [
+                      "page_view",
+                      "view_content",
+                      "select_content",
+                      "select_item",
+                      "search",
+                      "share",
+                      "add_to_cart",
+                      "remove_from_cart",
+                      "viewed_cart",
+                      "add_to_wishlist",
+                      "initiate_checkout",
+                      "add_payment_info",
+                      "purchase",
+                      "refund",
+                      "lead",
+                      "qualify_lead",
+                      "close_convert_lead",
+                      "disqualify_lead",
+                      "complete_registration",
+                      "subscribe",
+                      "start_trial",
+                      "app_install",
+                      "app_launch",
+                      "contact",
+                      "schedule",
+                      "donate",
+                      "submit_application",
+                      "custom"
+                    ],
+                    "enumDescriptions": {
+                      "page_view": "User viewed a page",
+                      "view_content": "User viewed specific content (product, article, etc.)",
+                      "select_content": "User selected or clicked on content (article, video, etc.)",
+                      "select_item": "User selected a specific product or item from a list",
+                      "search": "User performed a search",
+                      "share": "User shared content via social or messaging",
+                      "add_to_cart": "User added an item to cart",
+                      "remove_from_cart": "User removed an item from cart",
+                      "viewed_cart": "User viewed their shopping cart",
+                      "add_to_wishlist": "User added an item to a wishlist",
+                      "initiate_checkout": "User started checkout process",
+                      "add_payment_info": "User added payment information",
+                      "purchase": "User completed a purchase",
+                      "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                      "lead": "User expressed interest (form submission, signup, etc.)",
+                      "qualify_lead": "Lead qualified by sales or scoring criteria",
+                      "close_convert_lead": "Lead converted to a customer or closed deal",
+                      "disqualify_lead": "Lead disqualified or marked as not viable",
+                      "complete_registration": "User completed account registration",
+                      "subscribe": "User subscribed to a service or newsletter",
+                      "start_trial": "User started a free trial",
+                      "app_install": "User installed an application",
+                      "app_launch": "User launched an application",
+                      "contact": "User initiated contact (call, message, etc.)",
+                      "schedule": "User scheduled an appointment or event",
+                      "donate": "User made a donation",
+                      "submit_application": "User submitted an application (loan, job, etc.)",
+                      "custom": "Custom event type (specify in custom_event_name)"
+                    }
+                  },
+                  "minItems": 1,
+                  "uniqueItems": true
+                },
+                "content_id_type": {
+                  "title": "Content ID Type",
+                  "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                  "type": "string",
+                  "enum": [
+                    "sku",
+                    "gtin",
+                    "offering_id",
+                    "job_id",
+                    "hotel_id",
+                    "flight_id",
+                    "vehicle_id",
+                    "listing_id",
+                    "store_id",
+                    "program_id",
+                    "destination_id",
+                    "app_id"
+                  ]
+                },
+                "feed_field_mappings": {
+                  "type": "array",
+                  "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                  "items": {
+                    "title": "Catalog Field Mapping",
+                    "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                    "type": "object",
+                    "properties": {
+                      "feed_field": {
+                        "type": "string",
+                        "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                      },
+                      "catalog_field": {
+                        "type": "string",
+                        "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                      },
+                      "asset_group_id": {
+                        "type": "string",
+                        "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                      },
+                      "value": {
+                        "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                      },
+                      "transform": {
+                        "type": "string",
+                        "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                        "enum": [
+                          "date",
+                          "divide",
+                          "boolean",
+                          "split"
+                        ]
+                      },
+                      "format": {
+                        "type": "string",
+                        "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                      },
+                      "timezone": {
+                        "type": "string",
+                        "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                      },
+                      "by": {
+                        "type": "number",
+                        "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                        "exclusiveMinimum": 0
+                      },
+                      "separator": {
+                        "type": "string",
+                        "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                        "default": ","
+                      },
+                      "default": {
+                        "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "allOf": [
+                      {
+                        "not": {
+                          "required": [
+                            "feed_field",
+                            "value"
+                          ]
+                        }
+                      },
+                      {
+                        "not": {
+                          "required": [
+                            "catalog_field",
+                            "asset_group_id"
+                          ]
+                        }
+                      }
+                    ],
+                    "additionalProperties": true,
+                    "examples": [
+                      {
+                        "description": "Simple field rename",
+                        "data": {
+                          "feed_field": "hotel_name",
+                          "catalog_field": "name"
+                        }
+                      },
+                      {
+                        "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                        "data": {
+                          "feed_field": "available_from",
+                          "catalog_field": "valid_from",
+                          "transform": "date",
+                          "format": "YYYYMMDD",
+                          "timezone": "UTC"
+                        }
+                      },
+                      {
+                        "description": "Divide cents to dollars",
+                        "data": {
+                          "feed_field": "price_cents",
+                          "catalog_field": "price.amount",
+                          "transform": "divide",
+                          "by": 100
+                        }
+                      },
+                      {
+                        "description": "Static literal injection \u2014 currency not in feed",
+                        "data": {
+                          "catalog_field": "price.currency",
+                          "value": "USD"
+                        }
+                      },
+                      {
+                        "description": "Image URL assigned to typed asset pool",
+                        "data": {
+                          "feed_field": "primary_photo_url",
+                          "asset_group_id": "images_landscape"
+                        }
+                      },
+                      {
+                        "description": "Vertical photo URL assigned to vertical pool",
+                        "data": {
+                          "feed_field": "portrait_photo_url",
+                          "asset_group_id": "images_vertical"
+                        }
+                      },
+                      {
+                        "description": "Split comma-separated tags to array",
+                        "data": {
+                          "feed_field": "amenity_list",
+                          "catalog_field": "amenities",
+                          "transform": "split",
+                          "separator": ","
+                        }
+                      },
+                      {
+                        "description": "Boolean coercion with default",
+                        "data": {
+                          "feed_field": "is_available",
+                          "catalog_field": "available",
+                          "transform": "boolean",
+                          "default": false
+                        }
+                      }
+                    ]
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "type"
+              ],
+              "additionalProperties": true,
+              "examples": [
+                {
+                  "description": "Synced product catalog from Google Merchant Center",
+                  "data": {
+                    "catalog_id": "gmc-primary",
+                    "name": "Primary Product Feed",
+                    "type": "product",
+                    "url": "https://feeds.acmecorp.com/products.xml",
+                    "feed_format": "google_merchant_center",
+                    "update_frequency": "daily"
+                  }
+                },
+                {
+                  "description": "Inventory feed for store-level stock data",
+                  "data": {
+                    "catalog_id": "store-inventory",
+                    "name": "Store Inventory",
+                    "type": "inventory",
+                    "url": "https://feeds.acmecorp.com/inventory.json",
+                    "feed_format": "custom",
+                    "update_frequency": "hourly"
+                  }
+                },
+                {
+                  "description": "Store locator feed",
+                  "data": {
+                    "catalog_id": "retail-locations",
+                    "name": "Retail Locations",
+                    "type": "store",
+                    "url": "https://feeds.acmecorp.com/stores.json",
+                    "feed_format": "custom",
+                    "update_frequency": "weekly"
+                  }
+                },
+                {
+                  "description": "Promotional pricing feed",
+                  "data": {
+                    "catalog_id": "summer-sale",
+                    "name": "Summer Sale Promotions",
+                    "type": "promotion",
+                    "url": "https://feeds.acmecorp.com/promotions.json",
+                    "feed_format": "google_merchant_center",
+                    "update_frequency": "daily"
+                  }
+                },
+                {
+                  "description": "Inline offering catalog (no sync needed)",
+                  "data": {
+                    "type": "offering",
+                    "items": [
+                      {
+                        "offering_id": "summer-sale",
+                        "name": "Summer Sale",
+                        "landing_url": "https://acme.com/summer"
+                      }
+                    ]
+                  }
+                },
+                {
+                  "description": "Reference to a previously synced catalog by ID",
+                  "data": {
+                    "catalog_id": "gmc-primary",
+                    "type": "product",
+                    "ids": [
+                      "SKU-12345",
+                      "SKU-67890"
+                    ]
+                  }
+                },
+                {
+                  "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                  "data": {
+                    "type": "product",
+                    "gtins": [
+                      "00013000006040",
+                      "00013000006057"
+                    ],
+                    "content_id_type": "gtin",
+                    "conversion_events": [
+                      "purchase",
+                      "add_to_cart"
+                    ]
+                  }
+                },
+                {
+                  "description": "Inline store catalog with catchment areas",
+                  "data": {
+                    "catalog_id": "retail-locations",
+                    "name": "Retail Locations",
+                    "type": "store",
+                    "items": [
+                      {
+                        "store_id": "amsterdam-flagship",
+                        "name": "Amsterdam Flagship",
+                        "location": {
+                          "lat": 52.3676,
+                          "lng": 4.9041
+                        },
+                        "catchments": [
+                          {
+                            "catchment_id": "walk",
+                            "travel_time": {
+                              "value": 10,
+                              "unit": "min"
+                            },
+                            "transport_mode": "walking"
+                          },
+                          {
+                            "catchment_id": "drive",
+                            "travel_time": {
+                              "value": 15,
+                              "unit": "min"
+                            },
+                            "transport_mode": "driving"
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                }
+              ]
+            }
+          },
+          "optimization_goals": {
+            "type": "array",
+            "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
+            "items": {
+              "title": "Optimization Goal",
+              "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
+              "oneOf": [
+                {
+                  "type": "object",
+                  "description": "Optimize for a seller-tracked delivery metric. No event source required \u2014 the seller tracks these natively.",
+                  "properties": {
+                    "kind": {
+                      "type": "string",
+                      "const": "metric"
+                    },
+                    "metric": {
+                      "type": "string",
+                      "enum": [
+                        "clicks",
+                        "views",
+                        "completed_views",
+                        "viewed_seconds",
+                        "attention_seconds",
+                        "attention_score",
+                        "engagements",
+                        "follows",
+                        "saves",
+                        "profile_visits",
+                        "reach"
+                      ],
+                      "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+                    },
+                    "reach_unit": {
+                      "allOf": [
+                        {
+                          "title": "Reach Unit",
+                          "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                          "type": "string",
+                          "enum": [
+                            "individuals",
+                            "households",
+                            "devices",
+                            "accounts",
+                            "cookies",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                            "households": "Unique households or TV homes.",
+                            "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                            "accounts": "Unique logged-in accounts (platform-specific identity).",
+                            "cookies": "Unique browser cookies.",
+                            "custom": "Publisher-defined reach unit. Describe in ext."
+                          }
+                        }
+                      ],
+                      "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+                    },
+                    "target_frequency": {
+                      "type": "object",
+                      "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
+                      "properties": {
+                        "min": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1)."
+                        },
+                        "max": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point."
+                        },
+                        "window": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
+                        }
+                      },
+                      "required": [
+                        "window"
+                      ],
+                      "anyOf": [
+                        {
+                          "required": [
+                            "min"
+                          ]
+                        },
+                        {
+                          "required": [
+                            "max"
+                          ]
+                        }
+                      ],
+                      "additionalProperties": true
+                    },
+                    "view_duration_seconds": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies."
+                    },
+                    "target": {
+                      "description": "Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Target cost per unit of the metric (e.g., cost per click, cost per completed view).",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "cost_per"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target cost per metric unit in the buy currency"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Minimum per-impression rate for this metric. The metric defines the units: proportions for count metrics (e.g., 0.001 for 0.1% CTR, 0.70 for 70% viewability), seconds for duration metrics (e.g., 3.0 for 3s in view), or score for score metrics.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "threshold_rate"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score)."
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "priority": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "metric"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "description": "Optimize for advertiser-tracked conversion events. Requires event sources registered via sync_event_sources.",
+                  "properties": {
+                    "kind": {
+                      "type": "string",
+                      "const": "event"
+                    },
+                    "event_sources": {
+                      "type": "array",
+                      "description": "Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries \u2014 the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "event_source_id": {
+                            "type": "string",
+                            "minLength": 1,
+                            "description": "Event source to include (must be configured on this account via sync_event_sources)"
+                          },
+                          "event_type": {
+                            "title": "Event Type",
+                            "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "custom_event_name": {
+                            "type": "string",
+                            "description": "Required when event_type is 'custom'. Platform-specific name for the custom event."
+                          },
+                          "value_field": {
+                            "type": "string",
+                            "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' \u2014 sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism."
+                          },
+                          "value_factor": {
+                            "type": "number",
+                            "default": 1,
+                            "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics."
+                          }
+                        },
+                        "required": [
+                          "event_source_id",
+                          "event_type"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "minItems": 1
+                    },
+                    "target": {
+                      "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget \u2014 regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Target cost per conversion event (after deduplication across event_sources).",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "cost_per"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target cost per event in the buy currency"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Target return per unit of ad spend, calculated as sum(value_field * value_factor) / spend across all deduplicated events. Requires value_field on at least one event_sources entry.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "per_ad_spend"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Maximize total conversion value within budget, without a specific return ratio target. Steers spend toward higher-value conversions rather than maximizing conversion count. Requires value_field on at least one event_sources entry.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "maximize_value"
+                            }
+                          },
+                          "required": [
+                            "kind"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "attribution_window": {
+                      "type": "object",
+                      "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
+                      "properties": {
+                        "post_click": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
+                        },
+                        "post_view": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
+                        }
+                      },
+                      "required": [
+                        "post_click"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "priority": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "event_sources"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "targeting_overlay": {
+            "title": "Targeting Overlay",
+            "description": "Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).",
+            "type": "object",
+            "properties": {
+              "geo_countries": {
+                "type": "array",
+                "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "geo_countries_exclude": {
+                "type": "array",
+                "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "geo_regions": {
+                "type": "array",
+                "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                },
+                "minItems": 1
+              },
+              "geo_regions_exclude": {
+                "type": "array",
+                "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                },
+                "minItems": 1
+              },
+              "geo_metros": {
+                "type": "array",
+                "description": "Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Metro Area System",
+                      "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                      "type": "string",
+                      "enum": [
+                        "nielsen_dma",
+                        "uk_itl1",
+                        "uk_itl2",
+                        "eurostat_nuts2",
+                        "custom"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_metros_exclude": {
+                "type": "array",
+                "description": "Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Metro Area System",
+                      "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                      "type": "string",
+                      "enum": [
+                        "nielsen_dma",
+                        "uk_itl1",
+                        "uk_itl2",
+                        "eurostat_nuts2",
+                        "custom"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_postal_areas": {
+                "type": "array",
+                "description": "Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Postal Code System",
+                      "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                      "type": "string",
+                      "enum": [
+                        "us_zip",
+                        "us_zip_plus_four",
+                        "gb_outward",
+                        "gb_full",
+                        "ca_fsa",
+                        "ca_full",
+                        "de_plz",
+                        "fr_code_postal",
+                        "au_postcode",
+                        "ch_plz",
+                        "at_plz"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_postal_areas_exclude": {
+                "type": "array",
+                "description": "Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Postal Code System",
+                      "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                      "type": "string",
+                      "enum": [
+                        "us_zip",
+                        "us_zip_plus_four",
+                        "gb_outward",
+                        "gb_full",
+                        "ca_fsa",
+                        "ca_full",
+                        "de_plz",
+                        "fr_code_postal",
+                        "au_postcode",
+                        "ch_plz",
+                        "at_plz"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "daypart_targets": {
+                "type": "array",
+                "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
+                "items": {
+                  "title": "Daypart Target",
+                  "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+                  "type": "object",
+                  "properties": {
+                    "days": {
+                      "type": "array",
+                      "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
+                      "items": {
+                        "title": "Day of Week",
+                        "description": "Days of the week for daypart targeting",
+                        "type": "string",
+                        "enum": [
+                          "monday",
+                          "tuesday",
+                          "wednesday",
+                          "thursday",
+                          "friday",
+                          "saturday",
+                          "sunday"
+                        ]
+                      },
+                      "minItems": 1
+                    },
+                    "start_hour": {
+                      "type": "integer",
+                      "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+                      "minimum": 0,
+                      "maximum": 23
+                    },
+                    "end_hour": {
+                      "type": "integer",
+                      "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
+                      "minimum": 1,
+                      "maximum": 24
+                    },
+                    "label": {
+                      "type": "string",
+                      "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+                    }
+                  },
+                  "required": [
+                    "days",
+                    "start_hour",
+                    "end_hour"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "axe_include_segment": {
+                "type": "string",
+                "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
+                "deprecated": true
+              },
+              "axe_exclude_segment": {
+                "type": "string",
+                "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
+                "deprecated": true
+              },
+              "audience_include": {
+                "type": "array",
+                "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              },
+              "audience_exclude": {
+                "type": "array",
+                "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              },
+              "frequency_cap": {
+                "title": "Frequency Cap",
+                "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
+                "type": "object",
+                "properties": {
+                  "suppress": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+                  },
+                  "suppress_minutes": {
+                    "type": "number",
+                    "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+                    "minimum": 0
+                  },
+                  "max_impressions": {
+                    "type": "integer",
+                    "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+                    "minimum": 1
+                  },
+                  "per": {
+                    "allOf": [
+                      {
+                        "title": "Reach Unit",
+                        "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                        "type": "string",
+                        "enum": [
+                          "individuals",
+                          "households",
+                          "devices",
+                          "accounts",
+                          "cookies",
+                          "custom"
+                        ],
+                        "enumDescriptions": {
+                          "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                          "households": "Unique households or TV homes.",
+                          "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                          "accounts": "Unique logged-in accounts (platform-specific identity).",
+                          "cookies": "Unique browser cookies.",
+                          "custom": "Publisher-defined reach unit. Describe in ext."
+                        }
+                      }
+                    ],
+                    "description": "Entity granularity for impression counting. Required when max_impressions is set."
+                  },
+                  "window": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+                  }
+                },
+                "anyOf": [
+                  {
+                    "required": [
+                      "suppress"
+                    ]
+                  },
+                  {
+                    "required": [
+                      "suppress_minutes"
+                    ]
+                  },
+                  {
+                    "required": [
+                      "max_impressions"
+                    ]
+                  }
+                ],
+                "dependencies": {
+                  "max_impressions": [
+                    "per",
+                    "window"
+                  ],
+                  "per": [
+                    "max_impressions"
+                  ],
+                  "window": [
+                    "max_impressions"
+                  ]
+                },
+                "additionalProperties": true
+              },
+              "property_list": {
+                "title": "Property List Reference",
+                "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the property list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the property list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "collection_list": {
+                "title": "Collection List Reference",
+                "description": "Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the collection list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the collection list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "collection_list_exclude": {
+                "title": "Collection List Reference",
+                "description": "Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the collection list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the collection list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "age_restriction": {
+                "type": "object",
+                "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
+                "properties": {
+                  "min": {
+                    "type": "integer",
+                    "minimum": 13,
+                    "maximum": 99,
+                    "description": "Minimum age required"
+                  },
+                  "verification_required": {
+                    "type": "boolean",
+                    "default": false,
+                    "description": "Whether verified age (not inferred) is required for compliance"
+                  },
+                  "accepted_methods": {
+                    "type": "array",
+                    "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
+                    "items": {
+                      "title": "Age Verification Method",
+                      "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+                      "type": "string",
+                      "enum": [
+                        "facial_age_estimation",
+                        "id_document",
+                        "digital_id",
+                        "credit_card",
+                        "world_id"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "min"
+                ],
+                "additionalProperties": false
+              },
+              "device_platform": {
+                "type": "array",
+                "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
+                "items": {
+                  "title": "Device Platform",
+                  "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
+                  "type": "string",
+                  "enum": [
+                    "ios",
+                    "android",
+                    "windows",
+                    "macos",
+                    "linux",
+                    "chromeos",
+                    "tvos",
+                    "tizen",
+                    "webos",
+                    "fire_os",
+                    "roku_os",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "device_type": {
+                "type": "array",
+                "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+                "items": {
+                  "title": "Device Type",
+                  "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                  "type": "string",
+                  "enum": [
+                    "desktop",
+                    "mobile",
+                    "tablet",
+                    "ctv",
+                    "dooh",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "device_type_exclude": {
+                "type": "array",
+                "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+                "items": {
+                  "title": "Device Type",
+                  "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                  "type": "string",
+                  "enum": [
+                    "desktop",
+                    "mobile",
+                    "tablet",
+                    "ctv",
+                    "dooh",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "store_catchments": {
+                "type": "array",
+                "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "catalog_id": {
+                      "type": "string",
+                      "description": "Synced store-type catalog ID from sync_catalogs."
+                    },
+                    "store_ids": {
+                      "type": "array",
+                      "description": "Filter to specific stores within the catalog. Omit to target all stores.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    },
+                    "catchment_ids": {
+                      "type": "array",
+                      "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "catalog_id"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "geo_proximity": {
+                "type": "array",
+                "description": "Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics \u2014 a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "lat": {
+                      "type": "number",
+                      "minimum": -90,
+                      "maximum": 90,
+                      "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                    },
+                    "lng": {
+                      "type": "number",
+                      "minimum": -180,
+                      "maximum": 180,
+                      "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                    },
+                    "label": {
+                      "type": "string",
+                      "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area')."
+                    },
+                    "travel_time": {
+                      "type": "object",
+                      "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
+                      "properties": {
+                        "value": {
+                          "type": "number",
+                          "minimum": 1,
+                          "description": "Travel time limit."
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "min",
+                            "hr"
+                          ],
+                          "description": "Time unit."
+                        }
+                      },
+                      "required": [
+                        "value",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "transport_mode": {
+                      "title": "Transport Mode",
+                      "description": "Transportation mode for isochrone calculation. Required when travel_time is provided.",
+                      "type": "string",
+                      "enum": [
+                        "walking",
+                        "cycling",
+                        "driving",
+                        "public_transport"
+                      ],
+                      "enumDescriptions": {
+                        "walking": "Pedestrian travel on walkable paths and sidewalks",
+                        "cycling": "Bicycle travel on roads and cycle paths",
+                        "driving": "Motor vehicle travel on road networks",
+                        "public_transport": "Public transit including bus, rail, metro, and ferry"
+                      }
+                    },
+                    "radius": {
+                      "type": "object",
+                      "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
+                      "properties": {
+                        "value": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Radius distance."
+                        },
+                        "unit": {
+                          "title": "Distance Unit",
+                          "description": "Distance unit.",
+                          "type": "string",
+                          "enum": [
+                            "km",
+                            "mi",
+                            "m"
+                          ],
+                          "enumDescriptions": {
+                            "km": "Kilometers",
+                            "mi": "Miles",
+                            "m": "Meters"
+                          }
+                        }
+                      },
+                      "required": [
+                        "value",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "geometry": {
+                      "type": "object",
+                      "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "enum": [
+                            "Polygon",
+                            "MultiPolygon"
+                          ],
+                          "description": "GeoJSON geometry type."
+                        },
+                        "coordinates": {
+                          "type": "array",
+                          "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "coordinates"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "oneOf": [
+                    {
+                      "required": [
+                        "lat",
+                        "lng",
+                        "travel_time",
+                        "transport_mode"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "radius"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "geometry"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "required": [
+                        "lat",
+                        "lng",
+                        "radius"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "travel_time"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "geometry"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "required": [
+                        "geometry"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "travel_time"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "radius"
+                            ]
+                          }
+                        ]
+                      }
+                    }
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "language": {
+                "type": "array",
+                "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[a-z]{2}$"
+                },
+                "minItems": 1
+              },
+              "keyword_targets": {
+                "type": "array",
+                "description": "Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) \u2014 the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "keyword": {
+                      "type": "string",
+                      "minLength": 1,
+                      "description": "The keyword to target"
+                    },
+                    "match_type": {
+                      "type": "string",
+                      "enum": [
+                        "broad",
+                        "phrase",
+                        "exact"
+                      ],
+                      "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly"
+                    },
+                    "bid_price": {
+                      "type": "number",
+                      "minimum": 0,
+                      "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies."
+                    }
+                  },
+                  "required": [
+                    "keyword",
+                    "match_type"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "negative_keywords": {
+                "type": "array",
+                "description": "Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "keyword": {
+                      "type": "string",
+                      "minLength": 1,
+                      "description": "The keyword to exclude"
+                    },
+                    "match_type": {
+                      "type": "string",
+                      "enum": [
+                        "broad",
+                        "phrase",
+                        "exact"
+                      ],
+                      "description": "Match type for exclusion"
+                    }
+                  },
+                  "required": [
+                    "keyword",
+                    "match_type"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              }
+            },
+            "additionalProperties": true
+          },
+          "measurement_terms": {
+            "title": "Measurement Terms",
+            "description": "Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply.",
+            "type": "object",
+            "properties": {
+              "billing_measurement": {
+                "type": "object",
+                "description": "Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV).",
+                "properties": {
+                  "vendor": {
+                    "title": "Brand Reference",
+                    "description": "Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+                    "type": "object",
+                    "properties": {
+                      "domain": {
+                        "type": "string",
+                        "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                        "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                      },
+                      "brand_id": {
+                        "title": "Brand ID",
+                        "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "tide",
+                          "cheerios",
+                          "air_jordan",
+                          "nike",
+                          "pampers"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "domain"
+                    ],
+                    "additionalProperties": false,
+                    "examples": [
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "spark"
+                      },
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "glow"
+                      },
+                      {
+                        "domain": "acme-corp.com"
+                      }
+                    ]
+                  },
+                  "max_variance_percent": {
+                    "type": "number",
+                    "minimum": 0,
+                    "exclusiveMaximum": 100,
+                    "description": "Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review)."
+                  },
+                  "measurement_window": {
+                    "type": "string",
+                    "description": "Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+                    "examples": [
+                      "live",
+                      "c3",
+                      "c7",
+                      "tentative",
+                      "final",
+                      "post_ivt",
+                      "post_sivt",
+                      "downloads_30d"
+                    ]
+                  }
+                },
+                "required": [
+                  "vendor"
+                ],
+                "additionalProperties": true
+              },
+              "makegood_policy": {
+                "type": "object",
+                "description": "Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.",
+                "properties": {
+                  "available_remedies": {
+                    "type": "array",
+                    "description": "Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.",
+                    "items": {
+                      "title": "Makegood Remedy",
+                      "description": "Remedy types available when a performance standard or billing measurement threshold is breached.",
+                      "type": "string",
+                      "enum": [
+                        "additional_delivery",
+                        "credit",
+                        "invoice_adjustment"
+                      ],
+                      "enumDescriptions": {
+                        "additional_delivery": "Seller extends or adds impressions to compensate for the shortfall. Delivery is like-for-like on the same campaign or a subsequent campaign within the same account.",
+                        "credit": "Seller issues a credit toward future media buys on the same account.",
+                        "invoice_adjustment": "Seller reduces the invoice for the current media buy to reflect actual delivered value."
+                      }
+                    },
+                    "minItems": 1,
+                    "uniqueItems": true
+                  }
+                },
+                "required": [
+                  "available_remedies"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "additionalProperties": true
+          },
+          "performance_standards": {
+            "type": "array",
+            "description": "Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+            "items": {
+              "title": "Performance Standard",
+              "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+              "type": "object",
+              "properties": {
+                "metric": {
+                  "title": "Performance Standard Metric",
+                  "description": "The performance metric this standard applies to.",
+                  "type": "string",
+                  "enum": [
+                    "viewability",
+                    "ivt",
+                    "completion_rate",
+                    "brand_safety",
+                    "attention_score"
+                  ],
+                  "enumDescriptions": {
+                    "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+                    "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+                    "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                    "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                    "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+                  }
+                },
+                "threshold": {
+                  "type": "number",
+                  "minimum": 0,
+                  "maximum": 1,
+                  "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+                },
+                "standard": {
+                  "title": "Viewability Standard",
+                  "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+                  "type": "string",
+                  "enum": [
+                    "mrc",
+                    "groupm"
+                  ],
+                  "enumDescriptions": {
+                    "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                    "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                  }
+                },
+                "vendor": {
+                  "title": "Brand Reference",
+                  "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+                  "type": "object",
+                  "properties": {
+                    "domain": {
+                      "type": "string",
+                      "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "brand_id": {
+                      "title": "Brand ID",
+                      "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "tide",
+                        "cheerios",
+                        "air_jordan",
+                        "nike",
+                        "pampers"
+                      ]
+                    }
+                  },
+                  "required": [
+                    "domain"
+                  ],
+                  "additionalProperties": false,
+                  "examples": [
+                    {
+                      "domain": "nova-brands.com",
+                      "brand_id": "spark"
+                    },
+                    {
+                      "domain": "nova-brands.com",
+                      "brand_id": "glow"
+                    },
+                    {
+                      "domain": "acme-corp.com"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "metric",
+                "threshold",
+                "vendor"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "creative_assignments": {
+            "type": "array",
+            "description": "Assign existing library creatives to this package with optional weights and placement targeting",
+            "items": {
+              "title": "Creative Assignment",
+              "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
+              "type": "object",
+              "properties": {
+                "creative_id": {
+                  "type": "string",
+                  "description": "Unique identifier for the creative"
+                },
+                "weight": {
+                  "type": "number",
+                  "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+                  "minimum": 0,
+                  "maximum": 100
+                },
+                "placement_ids": {
+                  "type": "array",
+                  "description": "Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "creative_id"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "creatives": {
+            "type": "array",
+            "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
+            "items": {
+              "title": "Creative Asset",
+              "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party snippets",
+              "type": "object",
+              "properties": {
+                "creative_id": {
+                  "type": "string",
+                  "description": "Unique identifier for the creative"
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable creative name"
+                },
+                "format_id": {
+                  "title": "Format ID",
+                  "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.",
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                    },
+                    "id": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$",
+                      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "duration_ms": {
+                      "type": "number",
+                      "minimum": 1,
+                      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                    }
+                  },
+                  "required": [
+                    "agent_url",
+                    "id"
+                  ],
+                  "additionalProperties": true,
+                  "dependencies": {
+                    "width": [
+                      "height"
+                    ],
+                    "height": [
+                      "width"
+                    ]
+                  }
+                },
+                "assets": {
+                  "type": "object",
+                  "description": "Assets required by the format, keyed by asset_id",
+                  "patternProperties": {
+                    "^[a-z0-9_]+$": {
+                      "anyOf": [
+                        {
+                          "title": "Image Asset",
+                          "description": "Image asset with URL and dimensions",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the image asset"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels"
+                            },
+                            "format": {
+                              "type": "string",
+                              "description": "Image file format (jpg, png, gif, webp, etc.)"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alternative text for accessibility",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "width",
+                            "height"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Video Asset",
+                          "description": "Video asset with URL and technical specifications including audio track properties",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the video asset"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds",
+                              "minimum": 1
+                            },
+                            "file_size_bytes": {
+                              "type": "integer",
+                              "description": "File size in bytes",
+                              "minimum": 1
+                            },
+                            "container_format": {
+                              "type": "string",
+                              "description": "Video container format (mp4, webm, mov, etc.)"
+                            },
+                            "video_codec": {
+                              "type": "string",
+                              "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                            },
+                            "video_bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Video stream bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "frame_rate": {
+                              "type": "string",
+                              "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                            },
+                            "frame_rate_type": {
+                              "type": "string",
+                              "enum": [
+                                "constant",
+                                "variable"
+                              ],
+                              "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                            },
+                            "scan_type": {
+                              "type": "string",
+                              "enum": [
+                                "progressive",
+                                "interlaced"
+                              ],
+                              "description": "Scan type of the video"
+                            },
+                            "color_space": {
+                              "type": "string",
+                              "enum": [
+                                "rec709",
+                                "rec2020",
+                                "rec2100",
+                                "srgb",
+                                "dci_p3"
+                              ],
+                              "description": "Color space of the video"
+                            },
+                            "hdr_format": {
+                              "type": "string",
+                              "enum": [
+                                "sdr",
+                                "hdr10",
+                                "hdr10_plus",
+                                "hlg",
+                                "dolby_vision"
+                              ],
+                              "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                            },
+                            "chroma_subsampling": {
+                              "type": "string",
+                              "enum": [
+                                "4:2:0",
+                                "4:2:2",
+                                "4:4:4"
+                              ],
+                              "description": "Chroma subsampling format"
+                            },
+                            "video_bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                8,
+                                10,
+                                12
+                              ],
+                              "description": "Video bit depth"
+                            },
+                            "gop_interval_seconds": {
+                              "type": "number",
+                              "description": "GOP/keyframe interval in seconds"
+                            },
+                            "gop_type": {
+                              "type": "string",
+                              "enum": [
+                                "closed",
+                                "open"
+                              ],
+                              "description": "GOP structure type"
+                            },
+                            "moov_atom_position": {
+                              "type": "string",
+                              "enum": [
+                                "start",
+                                "end"
+                              ],
+                              "description": "Position of moov atom in MP4 container"
+                            },
+                            "has_audio": {
+                              "type": "boolean",
+                              "description": "Whether the video contains an audio track"
+                            },
+                            "audio_codec": {
+                              "type": "string",
+                              "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                            },
+                            "audio_sampling_rate_hz": {
+                              "type": "integer",
+                              "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                            },
+                            "audio_channels": {
+                              "type": "string",
+                              "enum": [
+                                "mono",
+                                "stereo",
+                                "5.1",
+                                "7.1"
+                              ],
+                              "description": "Audio channel configuration"
+                            },
+                            "audio_bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                16,
+                                24,
+                                32
+                              ],
+                              "description": "Audio bit depth"
+                            },
+                            "audio_bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Audio bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "audio_loudness_lufs": {
+                              "type": "number",
+                              "description": "Integrated loudness in LUFS"
+                            },
+                            "audio_true_peak_dbfs": {
+                              "type": "number",
+                              "description": "True peak level in dBFS"
+                            },
+                            "captions_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to captions file (WebVTT, SRT, etc.)",
+                              "x-accessibility": true
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the video content",
+                              "x-accessibility": true
+                            },
+                            "audio_description_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to audio description track for visually impaired users",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "width",
+                            "height"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Audio Asset",
+                          "description": "Audio asset with URL and technical specifications",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the audio asset"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds",
+                              "minimum": 0
+                            },
+                            "file_size_bytes": {
+                              "type": "integer",
+                              "description": "File size in bytes",
+                              "minimum": 1
+                            },
+                            "container_format": {
+                              "type": "string",
+                              "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                            },
+                            "codec": {
+                              "type": "string",
+                              "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                            },
+                            "sampling_rate_hz": {
+                              "type": "integer",
+                              "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                            },
+                            "channels": {
+                              "type": "string",
+                              "enum": [
+                                "mono",
+                                "stereo",
+                                "5.1",
+                                "7.1"
+                              ],
+                              "description": "Channel configuration"
+                            },
+                            "bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                16,
+                                24,
+                                32
+                              ],
+                              "description": "Bit depth"
+                            },
+                            "bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "loudness_lufs": {
+                              "type": "number",
+                              "description": "Integrated loudness in LUFS"
+                            },
+                            "true_peak_dbfs": {
+                              "type": "number",
+                              "description": "True peak level in dBFS"
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the audio content",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "VAST Asset",
+                          "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "url",
+                                  "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL endpoint that returns VAST XML"
+                                },
+                                "vast_version": {
+                                  "title": "VAST Version",
+                                  "description": "VAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "2.0",
+                                    "3.0",
+                                    "4.0",
+                                    "4.1",
+                                    "4.2"
+                                  ]
+                                },
+                                "vpaid_enabled": {
+                                  "type": "boolean",
+                                  "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected video duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "VAST Tracking Event",
+                                    "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "rewind",
+                                      "skip",
+                                      "playerExpand",
+                                      "playerCollapse",
+                                      "fullscreen",
+                                      "exitFullscreen",
+                                      "progress",
+                                      "notUsed",
+                                      "otherAdInteraction",
+                                      "interactiveStart",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "closeLinear",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this VAST tag"
+                                },
+                                "captions_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                  "x-accessibility": true
+                                },
+                                "audio_description_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to audio description track for visually impaired users",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "inline",
+                                  "description": "Discriminator indicating VAST is delivered as inline XML content"
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Inline VAST XML content"
+                                },
+                                "vast_version": {
+                                  "title": "VAST Version",
+                                  "description": "VAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "2.0",
+                                    "3.0",
+                                    "4.0",
+                                    "4.1",
+                                    "4.2"
+                                  ]
+                                },
+                                "vpaid_enabled": {
+                                  "type": "boolean",
+                                  "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected video duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "VAST Tracking Event",
+                                    "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "rewind",
+                                      "skip",
+                                      "playerExpand",
+                                      "playerCollapse",
+                                      "fullscreen",
+                                      "exitFullscreen",
+                                      "progress",
+                                      "notUsed",
+                                      "otherAdInteraction",
+                                      "interactiveStart",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "closeLinear",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this VAST tag"
+                                },
+                                "captions_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                  "x-accessibility": true
+                                },
+                                "audio_description_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to audio description track for visually impaired users",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "content"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Text Asset",
+                          "description": "Text content asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "Text content"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "Language code (e.g., 'en', 'es', 'fr')"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "URL Asset",
+                          "description": "URL reference asset",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL reference"
+                            },
+                            "url_type": {
+                              "title": "URL Asset Type",
+                              "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                              "type": "string",
+                              "enum": [
+                                "clickthrough",
+                                "tracker_pixel",
+                                "tracker_script"
+                              ]
+                            },
+                            "description": {
+                              "type": "string",
+                              "description": "Description of what this URL points to"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "HTML Asset",
+                          "description": "HTML content asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "HTML content"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "HTML version (e.g., 'HTML5')"
+                            },
+                            "accessibility": {
+                              "type": "object",
+                              "description": "Self-declared accessibility properties for this opaque creative",
+                              "x-accessibility": true,
+                              "properties": {
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Text alternative describing the creative content"
+                                },
+                                "keyboard_navigable": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative can be fully operated via keyboard"
+                                },
+                                "motion_control": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                },
+                                "screen_reader_tested": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative has been tested with screen readers"
+                                }
+                              }
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "JavaScript Asset",
+                          "description": "JavaScript code asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "JavaScript content"
+                            },
+                            "module_type": {
+                              "title": "JavaScript Module Type",
+                              "description": "JavaScript module type",
+                              "type": "string",
+                              "enum": [
+                                "esm",
+                                "commonjs",
+                                "script"
+                              ]
+                            },
+                            "accessibility": {
+                              "type": "object",
+                              "description": "Self-declared accessibility properties for this opaque creative",
+                              "x-accessibility": true,
+                              "properties": {
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Text alternative describing the creative content"
+                                },
+                                "keyboard_navigable": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative can be fully operated via keyboard"
+                                },
+                                "motion_control": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                },
+                                "screen_reader_tested": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative has been tested with screen readers"
+                                }
+                              }
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Webhook Asset",
+                          "description": "Webhook for server-side dynamic content rendering (DCO)",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Webhook URL to call for dynamic content"
+                            },
+                            "method": {
+                              "title": "HTTP Method",
+                              "description": "HTTP method",
+                              "type": "string",
+                              "enum": [
+                                "GET",
+                                "POST"
+                              ],
+                              "default": "POST"
+                            },
+                            "timeout_ms": {
+                              "type": "integer",
+                              "minimum": 10,
+                              "maximum": 5000,
+                              "default": 500,
+                              "description": "Maximum time to wait for response in milliseconds"
+                            },
+                            "supported_macros": {
+                              "type": "array",
+                              "items": {
+                                "oneOf": [
+                                  {
+                                    "title": "Universal Macro",
+                                    "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                    "type": "string",
+                                    "enum": [
+                                      "MEDIA_BUY_ID",
+                                      "PACKAGE_ID",
+                                      "CREATIVE_ID",
+                                      "CACHEBUSTER",
+                                      "TIMESTAMP",
+                                      "CLICK_URL",
+                                      "GDPR",
+                                      "GDPR_CONSENT",
+                                      "US_PRIVACY",
+                                      "GPP_STRING",
+                                      "GPP_SID",
+                                      "IP_ADDRESS",
+                                      "LIMIT_AD_TRACKING",
+                                      "DEVICE_TYPE",
+                                      "OS",
+                                      "OS_VERSION",
+                                      "DEVICE_MAKE",
+                                      "DEVICE_MODEL",
+                                      "USER_AGENT",
+                                      "APP_BUNDLE",
+                                      "APP_NAME",
+                                      "COUNTRY",
+                                      "REGION",
+                                      "CITY",
+                                      "ZIP",
+                                      "DMA",
+                                      "LAT",
+                                      "LONG",
+                                      "DEVICE_ID",
+                                      "DEVICE_ID_TYPE",
+                                      "DOMAIN",
+                                      "PAGE_URL",
+                                      "REFERRER",
+                                      "KEYWORDS",
+                                      "PLACEMENT_ID",
+                                      "FOLD_POSITION",
+                                      "AD_WIDTH",
+                                      "AD_HEIGHT",
+                                      "VIDEO_ID",
+                                      "VIDEO_TITLE",
+                                      "VIDEO_DURATION",
+                                      "VIDEO_CATEGORY",
+                                      "CONTENT_GENRE",
+                                      "CONTENT_RATING",
+                                      "PLAYER_WIDTH",
+                                      "PLAYER_HEIGHT",
+                                      "POD_POSITION",
+                                      "POD_SIZE",
+                                      "AD_BREAK_ID",
+                                      "STATION_ID",
+                                      "COLLECTION_NAME",
+                                      "INSTALLMENT_ID",
+                                      "AUDIO_DURATION",
+                                      "TMPX",
+                                      "AXEM",
+                                      "CATALOG_ID",
+                                      "SKU",
+                                      "GTIN",
+                                      "OFFERING_ID",
+                                      "JOB_ID",
+                                      "HOTEL_ID",
+                                      "FLIGHT_ID",
+                                      "VEHICLE_ID",
+                                      "LISTING_ID",
+                                      "STORE_ID",
+                                      "PROGRAM_ID",
+                                      "DESTINATION_ID",
+                                      "CREATIVE_VARIANT_ID",
+                                      "APP_ITEM_ID"
+                                    ],
+                                    "enumDescriptions": {
+                                      "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                      "PACKAGE_ID": "AdCP package identifier",
+                                      "CREATIVE_ID": "AdCP creative identifier",
+                                      "CACHEBUSTER": "Random number to prevent caching",
+                                      "TIMESTAMP": "Unix timestamp in milliseconds",
+                                      "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                      "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                      "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                      "US_PRIVACY": "US Privacy (CCPA) string",
+                                      "GPP_STRING": "Global Privacy Platform consent string",
+                                      "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                      "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                      "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                      "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                      "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                      "OS_VERSION": "OS version number",
+                                      "DEVICE_MAKE": "Device manufacturer",
+                                      "DEVICE_MODEL": "Device model identifier",
+                                      "USER_AGENT": "Full user agent string",
+                                      "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                      "APP_NAME": "Human-readable app name",
+                                      "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                      "REGION": "State/province/region code",
+                                      "CITY": "City name",
+                                      "ZIP": "Postal code",
+                                      "DMA": "Nielsen DMA code (US TV markets)",
+                                      "LAT": "Latitude coordinate",
+                                      "LONG": "Longitude coordinate",
+                                      "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                      "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                      "DOMAIN": "Domain where ad is shown",
+                                      "PAGE_URL": "Full page URL (encoded)",
+                                      "REFERRER": "HTTP referrer URL",
+                                      "KEYWORDS": "Page keywords (comma-separated)",
+                                      "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                      "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                      "AD_WIDTH": "Ad slot width in pixels",
+                                      "AD_HEIGHT": "Ad slot height in pixels",
+                                      "VIDEO_ID": "Content video identifier",
+                                      "VIDEO_TITLE": "Content video title",
+                                      "VIDEO_DURATION": "Content duration in seconds",
+                                      "VIDEO_CATEGORY": "IAB content category",
+                                      "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                      "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                      "PLAYER_WIDTH": "Video player width in pixels",
+                                      "PLAYER_HEIGHT": "Video player height in pixels",
+                                      "POD_POSITION": "Position within ad break",
+                                      "POD_SIZE": "Total ads in the ad break",
+                                      "AD_BREAK_ID": "Unique ad break identifier",
+                                      "STATION_ID": "Radio station or podcast identifier",
+                                      "COLLECTION_NAME": "Program or collection name",
+                                      "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                      "AUDIO_DURATION": "Audio content duration in seconds",
+                                      "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                      "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                      "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                      "SKU": "Product SKU identifier for the catalog item being rendered",
+                                      "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                      "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                      "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                      "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                      "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                      "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                      "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                      "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                      "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                      "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                      "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                      "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                    }
+                                  },
+                                  {
+                                    "type": "string",
+                                    "description": "Custom or publisher-specific macro name"
+                                  }
+                                ]
+                              },
+                              "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                            },
+                            "required_macros": {
+                              "type": "array",
+                              "items": {
+                                "oneOf": [
+                                  {
+                                    "title": "Universal Macro",
+                                    "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                    "type": "string",
+                                    "enum": [
+                                      "MEDIA_BUY_ID",
+                                      "PACKAGE_ID",
+                                      "CREATIVE_ID",
+                                      "CACHEBUSTER",
+                                      "TIMESTAMP",
+                                      "CLICK_URL",
+                                      "GDPR",
+                                      "GDPR_CONSENT",
+                                      "US_PRIVACY",
+                                      "GPP_STRING",
+                                      "GPP_SID",
+                                      "IP_ADDRESS",
+                                      "LIMIT_AD_TRACKING",
+                                      "DEVICE_TYPE",
+                                      "OS",
+                                      "OS_VERSION",
+                                      "DEVICE_MAKE",
+                                      "DEVICE_MODEL",
+                                      "USER_AGENT",
+                                      "APP_BUNDLE",
+                                      "APP_NAME",
+                                      "COUNTRY",
+                                      "REGION",
+                                      "CITY",
+                                      "ZIP",
+                                      "DMA",
+                                      "LAT",
+                                      "LONG",
+                                      "DEVICE_ID",
+                                      "DEVICE_ID_TYPE",
+                                      "DOMAIN",
+                                      "PAGE_URL",
+                                      "REFERRER",
+                                      "KEYWORDS",
+                                      "PLACEMENT_ID",
+                                      "FOLD_POSITION",
+                                      "AD_WIDTH",
+                                      "AD_HEIGHT",
+                                      "VIDEO_ID",
+                                      "VIDEO_TITLE",
+                                      "VIDEO_DURATION",
+                                      "VIDEO_CATEGORY",
+                                      "CONTENT_GENRE",
+                                      "CONTENT_RATING",
+                                      "PLAYER_WIDTH",
+                                      "PLAYER_HEIGHT",
+                                      "POD_POSITION",
+                                      "POD_SIZE",
+                                      "AD_BREAK_ID",
+                                      "STATION_ID",
+                                      "COLLECTION_NAME",
+                                      "INSTALLMENT_ID",
+                                      "AUDIO_DURATION",
+                                      "TMPX",
+                                      "AXEM",
+                                      "CATALOG_ID",
+                                      "SKU",
+                                      "GTIN",
+                                      "OFFERING_ID",
+                                      "JOB_ID",
+                                      "HOTEL_ID",
+                                      "FLIGHT_ID",
+                                      "VEHICLE_ID",
+                                      "LISTING_ID",
+                                      "STORE_ID",
+                                      "PROGRAM_ID",
+                                      "DESTINATION_ID",
+                                      "CREATIVE_VARIANT_ID",
+                                      "APP_ITEM_ID"
+                                    ],
+                                    "enumDescriptions": {
+                                      "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                      "PACKAGE_ID": "AdCP package identifier",
+                                      "CREATIVE_ID": "AdCP creative identifier",
+                                      "CACHEBUSTER": "Random number to prevent caching",
+                                      "TIMESTAMP": "Unix timestamp in milliseconds",
+                                      "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                      "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                      "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                      "US_PRIVACY": "US Privacy (CCPA) string",
+                                      "GPP_STRING": "Global Privacy Platform consent string",
+                                      "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                      "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                      "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                      "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                      "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                      "OS_VERSION": "OS version number",
+                                      "DEVICE_MAKE": "Device manufacturer",
+                                      "DEVICE_MODEL": "Device model identifier",
+                                      "USER_AGENT": "Full user agent string",
+                                      "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                      "APP_NAME": "Human-readable app name",
+                                      "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                      "REGION": "State/province/region code",
+                                      "CITY": "City name",
+                                      "ZIP": "Postal code",
+                                      "DMA": "Nielsen DMA code (US TV markets)",
+                                      "LAT": "Latitude coordinate",
+                                      "LONG": "Longitude coordinate",
+                                      "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                      "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                      "DOMAIN": "Domain where ad is shown",
+                                      "PAGE_URL": "Full page URL (encoded)",
+                                      "REFERRER": "HTTP referrer URL",
+                                      "KEYWORDS": "Page keywords (comma-separated)",
+                                      "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                      "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                      "AD_WIDTH": "Ad slot width in pixels",
+                                      "AD_HEIGHT": "Ad slot height in pixels",
+                                      "VIDEO_ID": "Content video identifier",
+                                      "VIDEO_TITLE": "Content video title",
+                                      "VIDEO_DURATION": "Content duration in seconds",
+                                      "VIDEO_CATEGORY": "IAB content category",
+                                      "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                      "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                      "PLAYER_WIDTH": "Video player width in pixels",
+                                      "PLAYER_HEIGHT": "Video player height in pixels",
+                                      "POD_POSITION": "Position within ad break",
+                                      "POD_SIZE": "Total ads in the ad break",
+                                      "AD_BREAK_ID": "Unique ad break identifier",
+                                      "STATION_ID": "Radio station or podcast identifier",
+                                      "COLLECTION_NAME": "Program or collection name",
+                                      "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                      "AUDIO_DURATION": "Audio content duration in seconds",
+                                      "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                      "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                      "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                      "SKU": "Product SKU identifier for the catalog item being rendered",
+                                      "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                      "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                      "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                      "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                      "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                      "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                      "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                      "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                      "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                      "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                      "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                      "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                    }
+                                  },
+                                  {
+                                    "type": "string",
+                                    "description": "Custom or publisher-specific macro name"
+                                  }
+                                ]
+                              },
+                              "description": "Universal macros that must be provided for webhook to function"
+                            },
+                            "response_type": {
+                              "title": "Webhook Response Type",
+                              "description": "Expected content type of webhook response",
+                              "type": "string",
+                              "enum": [
+                                "html",
+                                "json",
+                                "xml",
+                                "javascript"
+                              ]
+                            },
+                            "security": {
+                              "type": "object",
+                              "description": "Security configuration for webhook calls",
+                              "properties": {
+                                "method": {
+                                  "title": "Webhook Security Method",
+                                  "description": "Authentication method",
+                                  "type": "string",
+                                  "enum": [
+                                    "hmac_sha256",
+                                    "api_key",
+                                    "none"
+                                  ]
+                                },
+                                "hmac_header": {
+                                  "type": "string",
+                                  "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                                },
+                                "api_key_header": {
+                                  "type": "string",
+                                  "description": "Header name for API key (e.g., 'X-API-Key')"
+                                }
+                              },
+                              "required": [
+                                "method"
+                              ]
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "response_type",
+                            "security"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "CSS Asset",
+                          "description": "CSS stylesheet asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "CSS content"
+                            },
+                            "media": {
+                              "type": "string",
+                              "description": "CSS media query context (e.g., 'screen', 'print')"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "DAAST Asset",
+                          "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "url",
+                                  "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL endpoint that returns DAAST XML"
+                                },
+                                "daast_version": {
+                                  "title": "DAAST Version",
+                                  "description": "DAAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "1.0",
+                                    "1.1"
+                                  ]
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected audio duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "DAAST Tracking Event",
+                                    "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "skip",
+                                      "progress",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this DAAST tag"
+                                },
+                                "companion_ads": {
+                                  "type": "boolean",
+                                  "description": "Whether companion display ads are included"
+                                },
+                                "transcript_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to text transcript of the audio content",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "inline",
+                                  "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Inline DAAST XML content"
+                                },
+                                "daast_version": {
+                                  "title": "DAAST Version",
+                                  "description": "DAAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "1.0",
+                                    "1.1"
+                                  ]
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected audio duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "DAAST Tracking Event",
+                                    "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "skip",
+                                      "progress",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this DAAST tag"
+                                },
+                                "companion_ads": {
+                                  "type": "boolean",
+                                  "description": "Whether companion display ads are included"
+                                },
+                                "transcript_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to text transcript of the audio content",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "content"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Markdown Asset",
+                          "description": "Markdown-formatted text content following CommonMark specification",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "Language code (e.g., 'en', 'es', 'fr')"
+                            },
+                            "markdown_flavor": {
+                              "title": "Markdown Flavor",
+                              "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                              "type": "string",
+                              "enum": [
+                                "commonmark",
+                                "gfm"
+                              ],
+                              "default": "commonmark"
+                            },
+                            "allow_raw_html": {
+                              "type": "boolean",
+                              "default": false,
+                              "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Brief Asset",
+                          "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                          "allOf": [
+                            {
+                              "title": "Creative Brief",
+                              "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                              "type": "object",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Campaign or flight name for identification"
+                                },
+                                "objective": {
+                                  "type": "string",
+                                  "enum": [
+                                    "awareness",
+                                    "consideration",
+                                    "conversion",
+                                    "retention",
+                                    "engagement"
+                                  ],
+                                  "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                                },
+                                "tone": {
+                                  "type": "string",
+                                  "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                                },
+                                "audience": {
+                                  "type": "string",
+                                  "description": "Target audience description for this campaign"
+                                },
+                                "territory": {
+                                  "type": "string",
+                                  "description": "Creative territory or positioning the campaign should occupy"
+                                },
+                                "messaging": {
+                                  "type": "object",
+                                  "description": "Messaging framework for the campaign",
+                                  "properties": {
+                                    "headline": {
+                                      "type": "string",
+                                      "description": "Primary headline"
+                                    },
+                                    "tagline": {
+                                      "type": "string",
+                                      "description": "Supporting tagline or sub-headline"
+                                    },
+                                    "cta": {
+                                      "type": "string",
+                                      "description": "Call-to-action text"
+                                    },
+                                    "key_messages": {
+                                      "type": "array",
+                                      "description": "Key messages to communicate in priority order",
+                                      "items": {
+                                        "type": "string"
+                                      }
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                },
+                                "reference_assets": {
+                                  "type": "array",
+                                  "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                                  "items": {
+                                    "title": "Reference Asset",
+                                    "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                    "type": "object",
+                                    "properties": {
+                                      "url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the reference asset (image, video, or document)"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "style_reference",
+                                          "product_shot",
+                                          "mood_board",
+                                          "example_creative",
+                                          "logo",
+                                          "strategy_doc",
+                                          "storyboard"
+                                        ],
+                                        "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                      },
+                                      "description": {
+                                        "type": "string",
+                                        "description": "Human-readable description of the asset and how it should inform creative generation"
+                                      }
+                                    },
+                                    "required": [
+                                      "url",
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "compliance": {
+                                  "type": "object",
+                                  "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                                  "properties": {
+                                    "required_disclosures": {
+                                      "type": "array",
+                                      "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "text": {
+                                            "type": "string",
+                                            "description": "The disclosure text that must appear in the creative"
+                                          },
+                                          "position": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                            "items": {
+                                              "type": "string",
+                                              "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                            },
+                                            "minItems": 1
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                          },
+                                          "language": {
+                                            "type": "string",
+                                            "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                          },
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "text"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    },
+                                    "prohibited_claims": {
+                                      "type": "array",
+                                      "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                      "items": {
+                                        "type": "string"
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Catalog Asset",
+                          "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                          "allOf": [
+                            {
+                              "title": "Catalog",
+                              "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                              "type": "object",
+                              "properties": {
+                                "catalog_id": {
+                                  "type": "string",
+                                  "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                                },
+                                "name": {
+                                  "type": "string",
+                                  "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                                },
+                                "type": {
+                                  "title": "Catalog Type",
+                                  "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                                  "type": "string",
+                                  "enum": [
+                                    "offering",
+                                    "product",
+                                    "inventory",
+                                    "store",
+                                    "promotion",
+                                    "hotel",
+                                    "flight",
+                                    "job",
+                                    "vehicle",
+                                    "real_estate",
+                                    "education",
+                                    "destination",
+                                    "app"
+                                  ]
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                                },
+                                "feed_format": {
+                                  "title": "Feed Format",
+                                  "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                                  "type": "string",
+                                  "enum": [
+                                    "google_merchant_center",
+                                    "facebook_catalog",
+                                    "shopify",
+                                    "linkedin_jobs",
+                                    "custom"
+                                  ]
+                                },
+                                "update_frequency": {
+                                  "title": "Update Frequency",
+                                  "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                                  "type": "string",
+                                  "enum": [
+                                    "realtime",
+                                    "hourly",
+                                    "daily",
+                                    "weekly"
+                                  ]
+                                },
+                                "items": {
+                                  "type": "array",
+                                  "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                                  "items": {
+                                    "type": "object"
+                                  },
+                                  "minItems": 1
+                                },
+                                "ids": {
+                                  "type": "array",
+                                  "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                },
+                                "gtins": {
+                                  "type": "array",
+                                  "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                                  "items": {
+                                    "type": "string",
+                                    "pattern": "^[0-9]{8,14}$"
+                                  },
+                                  "minItems": 1
+                                },
+                                "tags": {
+                                  "type": "array",
+                                  "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                },
+                                "category": {
+                                  "type": "string",
+                                  "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                                },
+                                "query": {
+                                  "type": "string",
+                                  "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                                },
+                                "conversion_events": {
+                                  "type": "array",
+                                  "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                                  "items": {
+                                    "title": "Event Type",
+                                    "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                    "type": "string",
+                                    "enum": [
+                                      "page_view",
+                                      "view_content",
+                                      "select_content",
+                                      "select_item",
+                                      "search",
+                                      "share",
+                                      "add_to_cart",
+                                      "remove_from_cart",
+                                      "viewed_cart",
+                                      "add_to_wishlist",
+                                      "initiate_checkout",
+                                      "add_payment_info",
+                                      "purchase",
+                                      "refund",
+                                      "lead",
+                                      "qualify_lead",
+                                      "close_convert_lead",
+                                      "disqualify_lead",
+                                      "complete_registration",
+                                      "subscribe",
+                                      "start_trial",
+                                      "app_install",
+                                      "app_launch",
+                                      "contact",
+                                      "schedule",
+                                      "donate",
+                                      "submit_application",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "page_view": "User viewed a page",
+                                      "view_content": "User viewed specific content (product, article, etc.)",
+                                      "select_content": "User selected or clicked on content (article, video, etc.)",
+                                      "select_item": "User selected a specific product or item from a list",
+                                      "search": "User performed a search",
+                                      "share": "User shared content via social or messaging",
+                                      "add_to_cart": "User added an item to cart",
+                                      "remove_from_cart": "User removed an item from cart",
+                                      "viewed_cart": "User viewed their shopping cart",
+                                      "add_to_wishlist": "User added an item to a wishlist",
+                                      "initiate_checkout": "User started checkout process",
+                                      "add_payment_info": "User added payment information",
+                                      "purchase": "User completed a purchase",
+                                      "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                      "lead": "User expressed interest (form submission, signup, etc.)",
+                                      "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                      "close_convert_lead": "Lead converted to a customer or closed deal",
+                                      "disqualify_lead": "Lead disqualified or marked as not viable",
+                                      "complete_registration": "User completed account registration",
+                                      "subscribe": "User subscribed to a service or newsletter",
+                                      "start_trial": "User started a free trial",
+                                      "app_install": "User installed an application",
+                                      "app_launch": "User launched an application",
+                                      "contact": "User initiated contact (call, message, etc.)",
+                                      "schedule": "User scheduled an appointment or event",
+                                      "donate": "User made a donation",
+                                      "submit_application": "User submitted an application (loan, job, etc.)",
+                                      "custom": "Custom event type (specify in custom_event_name)"
+                                    }
+                                  },
+                                  "minItems": 1,
+                                  "uniqueItems": true
+                                },
+                                "content_id_type": {
+                                  "title": "Content ID Type",
+                                  "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                                  "type": "string",
+                                  "enum": [
+                                    "sku",
+                                    "gtin",
+                                    "offering_id",
+                                    "job_id",
+                                    "hotel_id",
+                                    "flight_id",
+                                    "vehicle_id",
+                                    "listing_id",
+                                    "store_id",
+                                    "program_id",
+                                    "destination_id",
+                                    "app_id"
+                                  ]
+                                },
+                                "feed_field_mappings": {
+                                  "type": "array",
+                                  "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                                  "items": {
+                                    "title": "Catalog Field Mapping",
+                                    "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                    "type": "object",
+                                    "properties": {
+                                      "feed_field": {
+                                        "type": "string",
+                                        "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                      },
+                                      "catalog_field": {
+                                        "type": "string",
+                                        "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                      },
+                                      "asset_group_id": {
+                                        "type": "string",
+                                        "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                      },
+                                      "value": {
+                                        "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                      },
+                                      "transform": {
+                                        "type": "string",
+                                        "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                        "enum": [
+                                          "date",
+                                          "divide",
+                                          "boolean",
+                                          "split"
+                                        ]
+                                      },
+                                      "format": {
+                                        "type": "string",
+                                        "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                      },
+                                      "timezone": {
+                                        "type": "string",
+                                        "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                      },
+                                      "by": {
+                                        "type": "number",
+                                        "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                        "exclusiveMinimum": 0
+                                      },
+                                      "separator": {
+                                        "type": "string",
+                                        "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                        "default": ","
+                                      },
+                                      "default": {
+                                        "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "allOf": [
+                                      {
+                                        "not": {
+                                          "required": [
+                                            "feed_field",
+                                            "value"
+                                          ]
+                                        }
+                                      },
+                                      {
+                                        "not": {
+                                          "required": [
+                                            "catalog_field",
+                                            "asset_group_id"
+                                          ]
+                                        }
+                                      }
+                                    ],
+                                    "additionalProperties": true,
+                                    "examples": [
+                                      {
+                                        "description": "Simple field rename",
+                                        "data": {
+                                          "feed_field": "hotel_name",
+                                          "catalog_field": "name"
+                                        }
+                                      },
+                                      {
+                                        "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                        "data": {
+                                          "feed_field": "available_from",
+                                          "catalog_field": "valid_from",
+                                          "transform": "date",
+                                          "format": "YYYYMMDD",
+                                          "timezone": "UTC"
+                                        }
+                                      },
+                                      {
+                                        "description": "Divide cents to dollars",
+                                        "data": {
+                                          "feed_field": "price_cents",
+                                          "catalog_field": "price.amount",
+                                          "transform": "divide",
+                                          "by": 100
+                                        }
+                                      },
+                                      {
+                                        "description": "Static literal injection \u2014 currency not in feed",
+                                        "data": {
+                                          "catalog_field": "price.currency",
+                                          "value": "USD"
+                                        }
+                                      },
+                                      {
+                                        "description": "Image URL assigned to typed asset pool",
+                                        "data": {
+                                          "feed_field": "primary_photo_url",
+                                          "asset_group_id": "images_landscape"
+                                        }
+                                      },
+                                      {
+                                        "description": "Vertical photo URL assigned to vertical pool",
+                                        "data": {
+                                          "feed_field": "portrait_photo_url",
+                                          "asset_group_id": "images_vertical"
+                                        }
+                                      },
+                                      {
+                                        "description": "Split comma-separated tags to array",
+                                        "data": {
+                                          "feed_field": "amenity_list",
+                                          "catalog_field": "amenities",
+                                          "transform": "split",
+                                          "separator": ","
+                                        }
+                                      },
+                                      {
+                                        "description": "Boolean coercion with default",
+                                        "data": {
+                                          "feed_field": "is_available",
+                                          "catalog_field": "available",
+                                          "transform": "boolean",
+                                          "default": false
+                                        }
+                                      }
+                                    ]
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "type"
+                              ],
+                              "additionalProperties": true,
+                              "examples": [
+                                {
+                                  "description": "Synced product catalog from Google Merchant Center",
+                                  "data": {
+                                    "catalog_id": "gmc-primary",
+                                    "name": "Primary Product Feed",
+                                    "type": "product",
+                                    "url": "https://feeds.acmecorp.com/products.xml",
+                                    "feed_format": "google_merchant_center",
+                                    "update_frequency": "daily"
+                                  }
+                                },
+                                {
+                                  "description": "Inventory feed for store-level stock data",
+                                  "data": {
+                                    "catalog_id": "store-inventory",
+                                    "name": "Store Inventory",
+                                    "type": "inventory",
+                                    "url": "https://feeds.acmecorp.com/inventory.json",
+                                    "feed_format": "custom",
+                                    "update_frequency": "hourly"
+                                  }
+                                },
+                                {
+                                  "description": "Store locator feed",
+                                  "data": {
+                                    "catalog_id": "retail-locations",
+                                    "name": "Retail Locations",
+                                    "type": "store",
+                                    "url": "https://feeds.acmecorp.com/stores.json",
+                                    "feed_format": "custom",
+                                    "update_frequency": "weekly"
+                                  }
+                                },
+                                {
+                                  "description": "Promotional pricing feed",
+                                  "data": {
+                                    "catalog_id": "summer-sale",
+                                    "name": "Summer Sale Promotions",
+                                    "type": "promotion",
+                                    "url": "https://feeds.acmecorp.com/promotions.json",
+                                    "feed_format": "google_merchant_center",
+                                    "update_frequency": "daily"
+                                  }
+                                },
+                                {
+                                  "description": "Inline offering catalog (no sync needed)",
+                                  "data": {
+                                    "type": "offering",
+                                    "items": [
+                                      {
+                                        "offering_id": "summer-sale",
+                                        "name": "Summer Sale",
+                                        "landing_url": "https://acme.com/summer"
+                                      }
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Reference to a previously synced catalog by ID",
+                                  "data": {
+                                    "catalog_id": "gmc-primary",
+                                    "type": "product",
+                                    "ids": [
+                                      "SKU-12345",
+                                      "SKU-67890"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                                  "data": {
+                                    "type": "product",
+                                    "gtins": [
+                                      "00013000006040",
+                                      "00013000006057"
+                                    ],
+                                    "content_id_type": "gtin",
+                                    "conversion_events": [
+                                      "purchase",
+                                      "add_to_cart"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Inline store catalog with catchment areas",
+                                  "data": {
+                                    "catalog_id": "retail-locations",
+                                    "name": "Retail Locations",
+                                    "type": "store",
+                                    "items": [
+                                      {
+                                        "store_id": "amsterdam-flagship",
+                                        "name": "Amsterdam Flagship",
+                                        "location": {
+                                          "lat": 52.3676,
+                                          "lng": 4.9041
+                                        },
+                                        "catchments": [
+                                          {
+                                            "catchment_id": "walk",
+                                            "travel_time": {
+                                              "value": 10,
+                                              "unit": "min"
+                                            },
+                                            "transport_mode": "walking"
+                                          },
+                                          {
+                                            "catchment_id": "drive",
+                                            "travel_time": {
+                                              "value": 15,
+                                              "unit": "min"
+                                            },
+                                            "transport_mode": "driving"
+                                          }
+                                        ]
+                                      }
+                                    ]
+                                  }
+                                }
+                              ]
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "additionalProperties": true
+                },
+                "inputs": {
+                  "type": "array",
+                  "description": "Preview contexts for generative formats - defines what scenarios to generate previews for",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Human-readable name for this preview variant"
+                      },
+                      "macros": {
+                        "type": "object",
+                        "description": "Macro values to apply for this preview",
+                        "additionalProperties": {
+                          "type": "string"
+                        }
+                      },
+                      "context_description": {
+                        "type": "string",
+                        "description": "Natural language description of the context for AI-generated content"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "User-defined tags for organization and searchability",
+                  "items": {
+                    "type": "string"
+                  }
+                },
+                "status": {
+                  "title": "Creative Status",
+                  "description": "For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+                  "type": "string",
+                  "enum": [
+                    "processing",
+                    "pending_review",
+                    "approved",
+                    "rejected",
+                    "archived"
+                  ],
+                  "enumDescriptions": {
+                    "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
+                    "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+                    "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+                    "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+                    "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+                  }
+                },
+                "weight": {
+                  "type": "number",
+                  "description": "Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.",
+                  "minimum": 0,
+                  "maximum": 100
+                },
+                "placement_ids": {
+                  "type": "array",
+                  "description": "Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "industry_identifiers": {
+                  "type": "array",
+                  "description": "Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.",
+                  "items": {
+                    "title": "Industry Identifier",
+                    "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                    "type": "object",
+                    "properties": {
+                      "type": {
+                        "title": "Creative Identifier Type",
+                        "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                        "type": "string",
+                        "enum": [
+                          "ad_id",
+                          "isci",
+                          "clearcast_clock"
+                        ],
+                        "enumDescriptions": {
+                          "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                          "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                          "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                        },
+                        "examples": [
+                          "ad_id",
+                          "isci",
+                          "clearcast_clock"
+                        ]
+                      },
+                      "value": {
+                        "type": "string",
+                        "maxLength": 64,
+                        "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "uniqueItems": true
+                },
+                "provenance": {
+                  "title": "Provenance",
+                  "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).",
+                  "type": "object",
+                  "properties": {
+                    "digital_source_type": {
+                      "title": "Digital Source Type",
+                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                      "type": "string",
+                      "enum": [
+                        "digital_capture",
+                        "digital_creation",
+                        "trained_algorithmic_media",
+                        "composite_with_trained_algorithmic_media",
+                        "algorithmic_media",
+                        "composite_capture",
+                        "composite_synthetic",
+                        "human_edits",
+                        "data_driven_media"
+                      ],
+                      "enumDescriptions": {
+                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                        "composite_capture": "Multiple digital captures composited together without AI",
+                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                      }
+                    },
+                    "ai_tool": {
+                      "type": "object",
+                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                      "properties": {
+                        "name": {
+                          "type": "string",
+                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                        },
+                        "version": {
+                          "type": "string",
+                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                        },
+                        "provider": {
+                          "type": "string",
+                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                        }
+                      },
+                      "required": [
+                        "name"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "human_oversight": {
+                      "type": "string",
+                      "description": "Level of human involvement in the AI-assisted creation process",
+                      "enum": [
+                        "none",
+                        "prompt_only",
+                        "selected",
+                        "edited",
+                        "directed"
+                      ],
+                      "enumDescriptions": {
+                        "none": "Fully automated with no human involvement in generation",
+                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                        "selected": "Human selected from multiple AI-generated candidates",
+                        "edited": "Human edited or refined AI-generated output",
+                        "directed": "Human directed the creative process with AI as an assistive tool"
+                      }
+                    },
+                    "declared_by": {
+                      "type": "object",
+                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                      "properties": {
+                        "agent_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL of the agent or service that declared this provenance"
+                        },
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "creator",
+                            "advertiser",
+                            "agency",
+                            "platform",
+                            "tool"
+                          ],
+                          "description": "Role of the declaring party in the supply chain",
+                          "enumDescriptions": {
+                            "creator": "The party that created or generated the content",
+                            "advertiser": "The brand or advertiser that owns the content",
+                            "agency": "Agency acting on behalf of the advertiser",
+                            "platform": "Ad platform or publisher that processed the content",
+                            "tool": "Automated tool or service that attached provenance metadata"
+                          }
+                        }
+                      },
+                      "required": [
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "declared_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                    },
+                    "created_time": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this content was created or generated (ISO 8601)"
+                    },
+                    "c2pa": {
+                      "type": "object",
+                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                      "properties": {
+                        "manifest_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the C2PA manifest store for this content"
+                        }
+                      },
+                      "required": [
+                        "manifest_url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "disclosure": {
+                      "type": "object",
+                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                      "properties": {
+                        "required": {
+                          "type": "boolean",
+                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                        },
+                        "jurisdictions": {
+                          "type": "array",
+                          "description": "Jurisdictions where disclosure obligations apply",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "country": {
+                                "type": "string",
+                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                              },
+                              "region": {
+                                "type": "string",
+                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                              },
+                              "regulation": {
+                                "type": "string",
+                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                              },
+                              "label_text": {
+                                "type": "string",
+                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                              },
+                              "render_guidance": {
+                                "type": "object",
+                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                "minProperties": 1,
+                                "properties": {
+                                  "persistence": {
+                                    "title": "Disclosure Persistence",
+                                    "description": "How long the disclosure must persist during content playback or display",
+                                    "type": "string",
+                                    "enum": [
+                                      "continuous",
+                                      "initial",
+                                      "flexible"
+                                    ],
+                                    "enumDescriptions": {
+                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                    }
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                  },
+                                  "positions": {
+                                    "type": "array",
+                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                    "items": {
+                                      "title": "Disclosure Position",
+                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                      "type": "string",
+                                      "enum": [
+                                        "prominent",
+                                        "footer",
+                                        "audio",
+                                        "subtitle",
+                                        "overlay",
+                                        "end_card",
+                                        "pre_roll",
+                                        "companion"
+                                      ]
+                                    },
+                                    "minItems": 1,
+                                    "uniqueItems": true
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "country",
+                              "regulation"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "required"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "verification": {
+                      "type": "array",
+                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                      "minItems": 1,
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "verified_by": {
+                            "type": "string",
+                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                          },
+                          "verified_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When the verification was performed (ISO 8601)"
+                          },
+                          "result": {
+                            "type": "string",
+                            "enum": [
+                              "authentic",
+                              "ai_generated",
+                              "ai_modified",
+                              "inconclusive"
+                            ],
+                            "description": "Verification outcome"
+                          },
+                          "confidence": {
+                            "type": "number",
+                            "minimum": 0,
+                            "maximum": 1,
+                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                          },
+                          "details_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the full verification report"
+                          }
+                        },
+                        "required": [
+                          "verified_by",
+                          "result"
+                        ],
+                        "additionalProperties": true
+                      }
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "creative_id",
+                "name",
+                "format_id",
+                "assets"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1,
+            "maxItems": 100
+          },
+          "agency_estimate_number": {
+            "type": "string",
+            "maxLength": 100,
+            "description": "Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy)."
+          },
+          "context": {
+            "title": "Context Object",
+            "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            "type": "object",
+            "additionalProperties": true
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "product_id",
+          "budget",
+          "pricing_option_id"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "brand": {
+      "title": "Brand Reference",
+      "description": "Brand reference for this media buy. Resolved to full brand identity at execution time from brand.json or the registry.",
+      "type": "object",
+      "properties": {
+        "domain": {
+          "type": "string",
+          "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
+        "brand_id": {
+          "title": "Brand ID",
+          "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+          "type": "string",
+          "pattern": "^[a-z0-9_]+$",
+          "examples": [
+            "tide",
+            "cheerios",
+            "air_jordan",
+            "nike",
+            "pampers"
+          ]
+        }
+      },
+      "required": [
+        "domain"
+      ],
+      "additionalProperties": false,
+      "examples": [
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "spark"
+        },
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "glow"
+        },
+        {
+          "domain": "acme-corp.com"
+        }
+      ]
+    },
+    "advertiser_industry": {
+      "title": "Advertiser Industry",
+      "description": "Industry classification for this specific campaign. A brand may operate across multiple industries (brand.json industries field), but each media buy targets one. For example, a consumer health company running a wellness campaign sends 'healthcare.wellness', not 'cpg'. Sellers map this to platform-native codes (e.g., Spotify ADV categories, LinkedIn industry IDs). When omitted, sellers may infer from the brand manifest's industries field.",
+      "type": "string",
+      "x-extensible": true,
+      "x-pattern": "^[a-z][a-z0-9_]+(\\.[a-z][a-z0-9_]+)?$",
+      "enum": [
+        "automotive",
+        "automotive.electric_vehicles",
+        "automotive.parts_accessories",
+        "automotive.luxury",
+        "beauty_cosmetics",
+        "beauty_cosmetics.skincare",
+        "beauty_cosmetics.fragrance",
+        "beauty_cosmetics.haircare",
+        "cannabis",
+        "cpg",
+        "cpg.personal_care",
+        "cpg.household",
+        "dating",
+        "education",
+        "education.higher_education",
+        "education.online_learning",
+        "education.k12",
+        "energy_utilities",
+        "energy_utilities.renewable",
+        "fashion_apparel",
+        "fashion_apparel.luxury",
+        "fashion_apparel.sportswear",
+        "finance",
+        "finance.banking",
+        "finance.insurance",
+        "finance.investment",
+        "finance.cryptocurrency",
+        "food_beverage",
+        "food_beverage.alcohol",
+        "food_beverage.restaurants",
+        "food_beverage.packaged_goods",
+        "gambling_betting",
+        "gambling_betting.sports_betting",
+        "gambling_betting.casino",
+        "gaming",
+        "gaming.mobile",
+        "gaming.console_pc",
+        "gaming.esports",
+        "government_nonprofit",
+        "government_nonprofit.political",
+        "government_nonprofit.charity",
+        "healthcare",
+        "healthcare.pharmaceutical",
+        "healthcare.medical_devices",
+        "healthcare.wellness",
+        "home_garden",
+        "home_garden.furniture",
+        "home_garden.home_improvement",
+        "media_entertainment",
+        "media_entertainment.podcasts",
+        "media_entertainment.music",
+        "media_entertainment.film_tv",
+        "media_entertainment.publishing",
+        "media_entertainment.live_events",
+        "pets",
+        "professional_services",
+        "professional_services.legal",
+        "professional_services.consulting",
+        "real_estate",
+        "real_estate.residential",
+        "real_estate.commercial",
+        "recruitment_hr",
+        "retail",
+        "retail.ecommerce",
+        "retail.department_stores",
+        "sports_fitness",
+        "sports_fitness.equipment",
+        "sports_fitness.teams_leagues",
+        "technology",
+        "technology.software",
+        "technology.hardware",
+        "technology.ai_ml",
+        "telecom",
+        "telecom.mobile_carriers",
+        "telecom.internet_providers",
+        "transportation_logistics",
+        "travel_hospitality",
+        "travel_hospitality.airlines",
+        "travel_hospitality.hotels",
+        "travel_hospitality.cruise",
+        "travel_hospitality.tourism"
+      ],
+      "enumDescriptions": {
+        "automotive": "Automotive manufacturers, dealerships, and auto industry",
+        "automotive.electric_vehicles": "Electric vehicle manufacturers and charging infrastructure",
+        "automotive.parts_accessories": "Auto parts, accessories, and aftermarket products",
+        "automotive.luxury": "Luxury and premium automotive brands",
+        "beauty_cosmetics": "Beauty, cosmetics, and prestige skincare brands. Distinct from cpg.personal_care \u2014 use beauty_cosmetics for brands whose identity is rooted in beauty (L'Oreal Paris, Estee Lauder, Sephora) and cpg.personal_care for mass-market personal hygiene (Dove, Colgate)",
+        "beauty_cosmetics.skincare": "Skincare brands and dermatological products",
+        "beauty_cosmetics.fragrance": "Perfume and fragrance brands",
+        "beauty_cosmetics.haircare": "Professional and prestige haircare brands",
+        "cannabis": "Cannabis products and dispensaries. Subject to heavy platform restrictions \u2014 most platforms require explicit category declaration for ad acceptance",
+        "cpg": "Consumer packaged goods \u2014 mass-market products sold through retail. For food and beverage manufacturers, use food_beverage. For prestige beauty, use beauty_cosmetics",
+        "cpg.personal_care": "Mass-market personal care and hygiene products (deodorant, toothpaste, soap). For prestige beauty brands, use beauty_cosmetics",
+        "cpg.household": "Household cleaning and maintenance products",
+        "dating": "Dating apps and matchmaking services. Subject to platform restrictions similar to gambling_betting",
+        "education": "Educational institutions and learning services",
+        "education.higher_education": "Universities, colleges, and graduate programs",
+        "education.online_learning": "Online courses, MOOCs, and digital education platforms",
+        "education.k12": "Primary and secondary education",
+        "energy_utilities": "Energy companies and utilities",
+        "energy_utilities.renewable": "Renewable energy, solar, wind, and clean technology",
+        "fashion_apparel": "Clothing, footwear, and fashion accessories",
+        "fashion_apparel.luxury": "Luxury fashion and designer brands",
+        "fashion_apparel.sportswear": "Athletic and sportswear brands",
+        "finance": "Financial services, banking, and insurance",
+        "finance.banking": "Retail and commercial banking",
+        "finance.insurance": "Insurance products and services",
+        "finance.investment": "Investment, wealth management, and brokerage",
+        "finance.cryptocurrency": "Cryptocurrency exchanges and blockchain financial products",
+        "food_beverage": "Food and beverage companies \u2014 manufacturers (Coca-Cola, Nestle), restaurants, and alcohol brands. For non-food packaged goods, use cpg",
+        "food_beverage.alcohol": "Alcoholic beverages (beer, wine, spirits). Subject to platform age-gating and regional restrictions",
+        "food_beverage.restaurants": "Restaurants, fast food, and food delivery",
+        "food_beverage.packaged_goods": "Packaged food and non-alcoholic beverages",
+        "gambling_betting": "Gambling, sports betting, and wagering. Subject to heavy platform restrictions \u2014 most platforms require explicit category declaration",
+        "gambling_betting.sports_betting": "Sports betting and daily fantasy sports",
+        "gambling_betting.casino": "Online casinos and traditional gambling",
+        "gaming": "Video games and interactive entertainment",
+        "gaming.mobile": "Mobile gaming",
+        "gaming.console_pc": "Console and PC gaming",
+        "gaming.esports": "Esports teams, tournaments, and streaming",
+        "government_nonprofit": "Government agencies and nonprofit organizations",
+        "government_nonprofit.political": "Political advertising and advocacy. Subject to platform transparency and disclosure requirements",
+        "government_nonprofit.charity": "Charitable organizations and fundraising",
+        "healthcare": "Healthcare, pharmaceuticals, and medical",
+        "healthcare.pharmaceutical": "Pharmaceutical and biotech companies. Subject to platform restrictions on drug advertising",
+        "healthcare.medical_devices": "Medical devices and health technology",
+        "healthcare.wellness": "Wellness, supplements, and alternative health",
+        "home_garden": "Home furnishing, improvement, and garden",
+        "home_garden.furniture": "Furniture and home decor",
+        "home_garden.home_improvement": "Home improvement, tools, and renovation",
+        "media_entertainment": "Media, entertainment, and content",
+        "media_entertainment.podcasts": "Podcast networks and podcast-first brands",
+        "media_entertainment.music": "Music labels, streaming, and artists",
+        "media_entertainment.film_tv": "Film studios, TV networks, and streaming services",
+        "media_entertainment.publishing": "Book publishers, magazines, and digital publications",
+        "media_entertainment.live_events": "Concerts, festivals, and live entertainment",
+        "pets": "Pet food, supplies, and veterinary services",
+        "professional_services": "Professional and business services",
+        "professional_services.legal": "Law firms and legal services",
+        "professional_services.consulting": "Management and business consulting",
+        "real_estate": "Real estate, property, and construction",
+        "real_estate.residential": "Residential real estate and housing",
+        "real_estate.commercial": "Commercial real estate and property management",
+        "recruitment_hr": "Job boards, staffing agencies, and HR technology",
+        "retail": "Retail stores and e-commerce",
+        "retail.ecommerce": "Online-first retailers and marketplaces",
+        "retail.department_stores": "Department stores and multi-brand retailers",
+        "sports_fitness": "Sports, fitness, and athletics",
+        "sports_fitness.equipment": "Sports and fitness equipment",
+        "sports_fitness.teams_leagues": "Professional sports teams and leagues",
+        "technology": "Technology companies and digital services",
+        "technology.software": "Software products, platforms, and SaaS",
+        "technology.hardware": "Consumer electronics and hardware",
+        "technology.ai_ml": "Artificial intelligence and machine learning companies",
+        "telecom": "Telecommunications and connectivity",
+        "telecom.mobile_carriers": "Mobile network operators",
+        "telecom.internet_providers": "Internet service providers and broadband",
+        "transportation_logistics": "Shipping, logistics, and freight services",
+        "travel_hospitality": "Travel, hospitality, and tourism",
+        "travel_hospitality.airlines": "Airlines and air travel",
+        "travel_hospitality.hotels": "Hotels, resorts, and accommodation",
+        "travel_hospitality.cruise": "Cruise lines and ocean travel",
+        "travel_hospitality.tourism": "Tourism boards and travel agencies"
+      }
+    },
+    "invoice_recipient": {
+      "title": "Business Entity",
+      "description": "Override the account's default billing entity for this specific buy. When provided, the seller invoices this entity instead. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request.",
+      "type": "object",
+      "properties": {
+        "legal_name": {
+          "type": "string",
+          "description": "Registered legal name of the business entity",
+          "maxLength": 200
+        },
+        "vat_id": {
+          "type": "string",
+          "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+          "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+        },
+        "tax_id": {
+          "type": "string",
+          "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+          "maxLength": 30
+        },
+        "registration_number": {
+          "type": "string",
+          "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+          "maxLength": 50
+        },
+        "address": {
+          "type": "object",
+          "description": "Postal address for invoicing and legal correspondence",
+          "properties": {
+            "street": {
+              "type": "string",
+              "description": "Street address including building number",
+              "maxLength": 200
+            },
+            "city": {
+              "type": "string",
+              "maxLength": 100
+            },
+            "postal_code": {
+              "type": "string",
+              "maxLength": 20
+            },
+            "region": {
+              "type": "string",
+              "description": "State, province, or region",
+              "maxLength": 100
+            },
+            "country": {
+              "type": "string",
+              "description": "ISO 3166-1 alpha-2 country code",
+              "pattern": "^[A-Z]{2}$"
+            }
+          },
+          "required": [
+            "street",
+            "city",
+            "postal_code",
+            "country"
+          ],
+          "additionalProperties": false
+        },
+        "contacts": {
+          "type": "array",
+          "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "role": {
+                "type": "string",
+                "enum": [
+                  "billing",
+                  "legal",
+                  "creative",
+                  "general"
+                ],
+                "enumDescriptions": {
+                  "billing": "Accounts payable and invoice queries",
+                  "legal": "Contract and compliance matters",
+                  "creative": "Material submission and creative approval",
+                  "general": "Default contact when no specific role applies"
+                },
+                "description": "Contact's functional role in the business relationship"
+              },
+              "name": {
+                "type": "string",
+                "description": "Full name of the contact",
+                "maxLength": 200
+              },
+              "email": {
+                "type": "string",
+                "format": "email",
+                "maxLength": 254
+              },
+              "phone": {
+                "type": "string",
+                "maxLength": 30
+              }
+            },
+            "required": [
+              "role"
+            ],
+            "additionalProperties": false
+          },
+          "maxItems": 10
+        },
+        "bank": {
+          "type": "object",
+          "writeOnly": true,
+          "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+          "properties": {
+            "account_holder": {
+              "type": "string",
+              "description": "Name on the bank account",
+              "maxLength": 200
+            },
+            "iban": {
+              "type": "string",
+              "description": "International Bank Account Number (SEPA markets)",
+              "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+            },
+            "bic": {
+              "type": "string",
+              "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+              "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+            },
+            "routing_number": {
+              "type": "string",
+              "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+              "maxLength": 30
+            },
+            "account_number": {
+              "type": "string",
+              "description": "Bank account number for non-SEPA markets",
+              "maxLength": 30
+            }
+          },
+          "required": [
+            "account_holder"
+          ],
+          "additionalProperties": false
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "legal_name"
+      ],
+      "additionalProperties": false,
+      "examples": [
+        {
+          "description": "German agency with full B2B details",
+          "data": {
+            "legal_name": "Pinnacle Media GmbH",
+            "vat_id": "DE123456789",
+            "registration_number": "HRB 12345",
+            "address": {
+              "street": "Friedrichstrasse 100",
+              "city": "Berlin",
+              "postal_code": "10117",
+              "country": "DE"
+            },
+            "contacts": [
+              {
+                "role": "billing",
+                "name": "Sam Adeyemi",
+                "email": "billing@pinnacle-media.com",
+                "phone": "+49 30 12345678"
+              }
+            ],
+            "bank": {
+              "account_holder": "Pinnacle Media GmbH",
+              "iban": "DE89370400440532013000",
+              "bic": "COBADEFFXXX"
+            }
+          }
+        },
+        {
+          "description": "US advertiser with EIN and domestic bank details",
+          "data": {
+            "legal_name": "Acme Corporation",
+            "tax_id": "12-3456789",
+            "address": {
+              "street": "123 Main St",
+              "city": "New York",
+              "postal_code": "10001",
+              "region": "NY",
+              "country": "US"
+            },
+            "contacts": [
+              {
+                "role": "billing",
+                "name": "AP Department",
+                "email": "ap@acme-corp.com"
+              }
+            ],
+            "bank": {
+              "account_holder": "Acme Corporation",
+              "routing_number": "021000021",
+              "account_number": "123456789"
+            }
+          }
+        }
+      ]
+    },
+    "io_acceptance": {
+      "type": "object",
+      "description": "Acceptance of an insertion order from a committed proposal. Required when the proposal's insertion_order has requires_signature: true. References the io_id from the proposal's insertion_order.",
+      "properties": {
+        "io_id": {
+          "type": "string",
+          "description": "The io_id from the proposal's insertion_order being accepted"
+        },
+        "accepted_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when the IO was accepted"
+        },
+        "signatory": {
+          "type": "string",
+          "description": "Who accepted the IO \u2014 agent identifier or human name",
+          "minLength": 1,
+          "maxLength": 250
+        },
+        "signature_id": {
+          "type": "string",
+          "description": "Reference to the electronic signature from the signing service, when signing_url was used"
+        }
+      },
+      "required": [
+        "io_id",
+        "accepted_at",
+        "signatory"
+      ],
+      "additionalProperties": true
+    },
+    "po_number": {
+      "type": "string",
+      "description": "Purchase order number for tracking"
+    },
+    "agency_estimate_number": {
+      "type": "string",
+      "maxLength": 100,
+      "description": "Agency estimate or authorization number. Primary financial reference for broadcast buys \u2014 links the order to the agency's media plan and billing system. Travels with the order and Ad-IDs through the transaction lifecycle."
+    },
+    "start_time": {
+      "title": "Start Timing",
+      "description": "Campaign start timing: 'asap' or ISO 8601 date-time",
+      "oneOf": [
+        {
+          "type": "string",
+          "const": "asap",
+          "description": "Start campaign as soon as possible"
+        },
+        {
+          "type": "string",
+          "format": "date-time",
+          "description": "Scheduled start date/time in ISO 8601 format"
+        }
+      ]
+    },
+    "end_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Campaign end date/time in ISO 8601 format"
+    },
+    "push_notification_config": {
+      "title": "Push Notification Config",
+      "description": "Optional webhook configuration for async task status notifications. Publisher will send webhooks when status changes (working, input-required, completed, failed). The client generates an operation_id and embeds it in the URL before sending \u2014 the publisher echoes it back in webhook payloads for correlation.",
+      "type": "object",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for task status notifications"
+        },
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "title": "Authentication Scheme",
+                "description": "Authentication schemes for push notification endpoints",
+                "type": "string",
+                "enum": [
+                  "Bearer",
+                  "HMAC-SHA256"
+                ]
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        }
+      },
+      "required": [
+        "url",
+        "authentication"
+      ]
+    },
+    "reporting_webhook": {
+      "title": "Reporting Webhook",
+      "description": "Optional webhook configuration for automated reporting delivery",
+      "type": "object",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for reporting notifications"
+        },
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "title": "Authentication Scheme",
+                "description": "Authentication schemes for push notification endpoints",
+                "type": "string",
+                "enum": [
+                  "Bearer",
+                  "HMAC-SHA256"
+                ]
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        },
+        "reporting_frequency": {
+          "type": "string",
+          "enum": [
+            "hourly",
+            "daily",
+            "monthly"
+          ],
+          "description": "Frequency for automated reporting delivery. Must be supported by all products in the media buy."
+        },
+        "requested_metrics": {
+          "type": "array",
+          "description": "Optional list of metrics to include in webhook notifications. If omitted, all available metrics are included. Must be subset of product's available_metrics.",
+          "items": {
+            "title": "Available Metric",
+            "description": "Standard delivery and performance metrics available for reporting",
+            "type": "string",
+            "enum": [
+              "impressions",
+              "spend",
+              "clicks",
+              "ctr",
+              "video_completions",
+              "completion_rate",
+              "conversions",
+              "conversion_value",
+              "roas",
+              "cost_per_acquisition",
+              "new_to_brand_rate",
+              "viewability",
+              "engagement_rate",
+              "views",
+              "completed_views",
+              "leads",
+              "reach",
+              "frequency",
+              "grps",
+              "quartile_data",
+              "dooh_metrics",
+              "cost_per_click"
+            ]
+          },
+          "uniqueItems": true
+        }
+      },
+      "required": [
+        "url",
+        "authentication",
+        "reporting_frequency"
+      ],
+      "additionalProperties": true
+    },
+    "artifact_webhook": {
+      "$comment": "Webhook configuration for content artifact delivery - enables governance validation. Same authentication structure as reporting_webhook.",
+      "type": "object",
+      "description": "Optional webhook configuration for content artifact delivery. Used by governance agents to validate content adjacency. Seller pushes artifacts to this endpoint; orchestrator forwards to governance agent for validation.",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for artifact delivery"
+        },
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "title": "Authentication Scheme",
+                "description": "Authentication schemes for push notification endpoints",
+                "type": "string",
+                "enum": [
+                  "Bearer",
+                  "HMAC-SHA256"
+                ]
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        },
+        "delivery_mode": {
+          "type": "string",
+          "enum": [
+            "realtime",
+            "batched"
+          ],
+          "description": "How artifacts are delivered. 'realtime' pushes artifacts as impressions occur. 'batched' aggregates artifacts and pushes periodically (see batch_frequency)."
+        },
+        "batch_frequency": {
+          "type": "string",
+          "enum": [
+            "hourly",
+            "daily"
+          ],
+          "description": "For batched delivery, how often to push artifacts. Required when delivery_mode is 'batched'."
+        },
+        "sampling_rate": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 1,
+          "description": "Fraction of impressions to include (0-1). 1.0 = all impressions, 0.1 = 10% sample. Default: 1.0"
+        }
+      },
+      "required": [
+        "url",
+        "authentication",
+        "delivery_mode"
+      ],
+      "additionalProperties": true
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account",
+    "brand",
+    "start_time",
+    "end_time"
+  ],
+  "dependencies": {
+    "proposal_id": [
+      "total_budget"
+    ]
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.361Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/create-media-buy-response.json b/schemas/cache/bundled/media-buy/create-media-buy-response.json
new file mode 100644
index 000000000..a95999c8e
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/create-media-buy-response.json
@@ -0,0 +1,3993 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Media Buy Response",
+  "description": "Response payload for create_media_buy task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - the media buy is either fully created or not created at all.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "CreateMediaBuySuccess",
+      "description": "Success response - media buy created successfully",
+      "type": "object",
+      "properties": {
+        "media_buy_id": {
+          "type": "string",
+          "description": "Seller's unique identifier for the created media buy"
+        },
+        "account": {
+          "title": "Account",
+          "description": "Account billed for this media buy. Includes advertiser, billing proxy (if any), and rate card applied.",
+          "type": "object",
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Unique identifier for this account"
+            },
+            "name": {
+              "type": "string",
+              "description": "Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')"
+            },
+            "advertiser": {
+              "type": "string",
+              "description": "The advertiser whose rates apply to this account"
+            },
+            "billing_proxy": {
+              "type": "string",
+              "description": "Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)"
+            },
+            "status": {
+              "title": "Account Status",
+              "description": "Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.",
+              "type": "string",
+              "enum": [
+                "active",
+                "pending_approval",
+                "rejected",
+                "payment_required",
+                "suspended",
+                "closed"
+              ],
+              "enumDescriptions": {
+                "active": "Account is operational and can create media buys",
+                "pending_approval": "Seller is reviewing the account (credit, contracts)",
+                "rejected": "Seller declined the account request \u2014 terminal state",
+                "payment_required": "Credit limit reached or funds depleted",
+                "suspended": "Was active, now paused \u2014 operations gated",
+                "closed": "Was active, now terminated \u2014 terminal state"
+              }
+            },
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "billing": {
+              "type": "string",
+              "enum": [
+                "operator",
+                "agent",
+                "advertiser"
+              ],
+              "description": "Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+            },
+            "billing_entity": {
+              "title": "Business Entity",
+              "description": "Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).",
+              "type": "object",
+              "properties": {
+                "legal_name": {
+                  "type": "string",
+                  "description": "Registered legal name of the business entity",
+                  "maxLength": 200
+                },
+                "vat_id": {
+                  "type": "string",
+                  "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+                  "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+                },
+                "tax_id": {
+                  "type": "string",
+                  "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+                  "maxLength": 30
+                },
+                "registration_number": {
+                  "type": "string",
+                  "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+                  "maxLength": 50
+                },
+                "address": {
+                  "type": "object",
+                  "description": "Postal address for invoicing and legal correspondence",
+                  "properties": {
+                    "street": {
+                      "type": "string",
+                      "description": "Street address including building number",
+                      "maxLength": 200
+                    },
+                    "city": {
+                      "type": "string",
+                      "maxLength": 100
+                    },
+                    "postal_code": {
+                      "type": "string",
+                      "maxLength": 20
+                    },
+                    "region": {
+                      "type": "string",
+                      "description": "State, province, or region",
+                      "maxLength": 100
+                    },
+                    "country": {
+                      "type": "string",
+                      "description": "ISO 3166-1 alpha-2 country code",
+                      "pattern": "^[A-Z]{2}$"
+                    }
+                  },
+                  "required": [
+                    "street",
+                    "city",
+                    "postal_code",
+                    "country"
+                  ],
+                  "additionalProperties": false
+                },
+                "contacts": {
+                  "type": "array",
+                  "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "role": {
+                        "type": "string",
+                        "enum": [
+                          "billing",
+                          "legal",
+                          "creative",
+                          "general"
+                        ],
+                        "enumDescriptions": {
+                          "billing": "Accounts payable and invoice queries",
+                          "legal": "Contract and compliance matters",
+                          "creative": "Material submission and creative approval",
+                          "general": "Default contact when no specific role applies"
+                        },
+                        "description": "Contact's functional role in the business relationship"
+                      },
+                      "name": {
+                        "type": "string",
+                        "description": "Full name of the contact",
+                        "maxLength": 200
+                      },
+                      "email": {
+                        "type": "string",
+                        "format": "email",
+                        "maxLength": 254
+                      },
+                      "phone": {
+                        "type": "string",
+                        "maxLength": 30
+                      }
+                    },
+                    "required": [
+                      "role"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "maxItems": 10
+                },
+                "bank": {
+                  "type": "object",
+                  "writeOnly": true,
+                  "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+                  "properties": {
+                    "account_holder": {
+                      "type": "string",
+                      "description": "Name on the bank account",
+                      "maxLength": 200
+                    },
+                    "iban": {
+                      "type": "string",
+                      "description": "International Bank Account Number (SEPA markets)",
+                      "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+                    },
+                    "bic": {
+                      "type": "string",
+                      "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+                      "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+                    },
+                    "routing_number": {
+                      "type": "string",
+                      "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+                      "maxLength": 30
+                    },
+                    "account_number": {
+                      "type": "string",
+                      "description": "Bank account number for non-SEPA markets",
+                      "maxLength": 30
+                    }
+                  },
+                  "required": [
+                    "account_holder"
+                  ],
+                  "additionalProperties": false
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "legal_name"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "description": "German agency with full B2B details",
+                  "data": {
+                    "legal_name": "Pinnacle Media GmbH",
+                    "vat_id": "DE123456789",
+                    "registration_number": "HRB 12345",
+                    "address": {
+                      "street": "Friedrichstrasse 100",
+                      "city": "Berlin",
+                      "postal_code": "10117",
+                      "country": "DE"
+                    },
+                    "contacts": [
+                      {
+                        "role": "billing",
+                        "name": "Sam Adeyemi",
+                        "email": "billing@pinnacle-media.com",
+                        "phone": "+49 30 12345678"
+                      }
+                    ],
+                    "bank": {
+                      "account_holder": "Pinnacle Media GmbH",
+                      "iban": "DE89370400440532013000",
+                      "bic": "COBADEFFXXX"
+                    }
+                  }
+                },
+                {
+                  "description": "US advertiser with EIN and domestic bank details",
+                  "data": {
+                    "legal_name": "Acme Corporation",
+                    "tax_id": "12-3456789",
+                    "address": {
+                      "street": "123 Main St",
+                      "city": "New York",
+                      "postal_code": "10001",
+                      "region": "NY",
+                      "country": "US"
+                    },
+                    "contacts": [
+                      {
+                        "role": "billing",
+                        "name": "AP Department",
+                        "email": "ap@acme-corp.com"
+                      }
+                    ],
+                    "bank": {
+                      "account_holder": "Acme Corporation",
+                      "routing_number": "021000021",
+                      "account_number": "123456789"
+                    }
+                  }
+                }
+              ]
+            },
+            "rate_card": {
+              "type": "string",
+              "description": "Identifier for the rate card applied to this account"
+            },
+            "payment_terms": {
+              "type": "string",
+              "enum": [
+                "net_15",
+                "net_30",
+                "net_45",
+                "net_60",
+                "net_90",
+                "prepay"
+              ],
+              "description": "Payment terms agreed for this account. Binding for all invoices when the account is active."
+            },
+            "credit_limit": {
+              "type": "object",
+              "description": "Maximum outstanding balance allowed",
+              "properties": {
+                "amount": {
+                  "type": "number",
+                  "minimum": 0
+                },
+                "currency": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{3}$"
+                }
+              },
+              "required": [
+                "amount",
+                "currency"
+              ]
+            },
+            "setup": {
+              "type": "object",
+              "description": "Present when status is 'pending_approval'. Contains next steps for completing account activation.",
+              "properties": {
+                "url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL where the human can complete the required action (credit application, legal agreement, add funds)."
+                },
+                "message": {
+                  "type": "string",
+                  "description": "Human-readable description of what's needed."
+                },
+                "expires_at": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this setup link expires."
+                }
+              },
+              "required": [
+                "message"
+              ],
+              "additionalProperties": true
+            },
+            "account_scope": {
+              "type": "string",
+              "enum": [
+                "operator",
+                "brand",
+                "operator_brand",
+                "agent"
+              ],
+              "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+            },
+            "governance_agents": {
+              "type": "array",
+              "description": "Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses \u2014 use sync_governance to set or update credentials.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "pattern": "^https://",
+                    "description": "Governance agent endpoint URL. Must use HTTPS."
+                  },
+                  "categories": {
+                    "type": "array",
+                    "items": {
+                      "type": "string",
+                      "maxLength": 64,
+                      "pattern": "^[a-z][a-z0-9_]*$"
+                    },
+                    "description": "Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+                    "maxItems": 20
+                  }
+                },
+                "required": [
+                  "url"
+                ],
+                "additionalProperties": false
+              },
+              "maxItems": 10
+            },
+            "reporting_bucket": {
+              "type": "object",
+              "description": "Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix \u2014 bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities).",
+              "properties": {
+                "protocol": {
+                  "title": "Cloud Storage Protocol",
+                  "description": "Cloud storage protocol",
+                  "type": "string",
+                  "enum": [
+                    "s3",
+                    "gcs",
+                    "azure_blob"
+                  ]
+                },
+                "bucket": {
+                  "type": "string",
+                  "description": "Bucket or container name",
+                  "minLength": 3,
+                  "maxLength": 63,
+                  "pattern": "^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$"
+                },
+                "prefix": {
+                  "type": "string",
+                  "description": "Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.",
+                  "maxLength": 512,
+                  "pattern": "^[a-zA-Z0-9/_.-]+$",
+                  "examples": [
+                    "accounts/pinnacle/adcp",
+                    "reporting/2024"
+                  ]
+                },
+                "region": {
+                  "type": "string",
+                  "description": "Cloud region for the bucket",
+                  "maxLength": 64,
+                  "pattern": "^[a-z0-9-]+$",
+                  "examples": [
+                    "us-east-1",
+                    "europe-west1"
+                  ]
+                },
+                "format": {
+                  "type": "string",
+                  "enum": [
+                    "jsonl",
+                    "csv",
+                    "parquet",
+                    "avro",
+                    "orc"
+                  ],
+                  "description": "File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).",
+                  "default": "jsonl"
+                },
+                "compression": {
+                  "type": "string",
+                  "enum": [
+                    "gzip",
+                    "none"
+                  ],
+                  "description": "Compression applied to delivered files",
+                  "default": "gzip"
+                },
+                "file_retention_days": {
+                  "type": "integer",
+                  "description": "How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.",
+                  "minimum": 1,
+                  "examples": [
+                    14,
+                    30,
+                    90
+                  ]
+                },
+                "setup_instructions": {
+                  "type": "string",
+                  "format": "uri",
+                  "pattern": "^https://",
+                  "description": "URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation \u2014 buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery."
+                }
+              },
+              "required": [
+                "protocol",
+                "bucket",
+                "file_retention_days"
+              ],
+              "additionalProperties": false
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, this is a sandbox account \u2014 no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account."
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "account_id",
+            "name",
+            "status"
+          ],
+          "additionalProperties": true,
+          "examples": [
+            {
+              "description": "Direct advertiser account",
+              "data": {
+                "account_id": "acc_acme_direct",
+                "name": "Acme",
+                "advertiser": "Acme Corp",
+                "brand": {
+                  "domain": "acme-corp.com"
+                },
+                "operator": "acme-corp.com",
+                "status": "active",
+                "billing": "operator",
+                "account_scope": "brand",
+                "rate_card": "acme_vip_2024",
+                "payment_terms": "net_30"
+              }
+            },
+            {
+              "description": "Advertiser account with agency billing proxy",
+              "data": {
+                "account_id": "acc_acme_pinnacle",
+                "name": "Acme c/o Pinnacle",
+                "advertiser": "Acme Corp",
+                "billing_proxy": "Pinnacle Media",
+                "brand": {
+                  "domain": "acme-corp.com"
+                },
+                "operator": "pinnacle-media.com",
+                "status": "active",
+                "billing": "operator",
+                "account_scope": "operator_brand",
+                "rate_card": "acme_vip_2024",
+                "payment_terms": "net_60"
+              }
+            },
+            {
+              "description": "Agency as direct buyer",
+              "data": {
+                "account_id": "acc_pinnacle",
+                "name": "Pinnacle",
+                "advertiser": "Pinnacle Media",
+                "brand": {
+                  "domain": "pinnacle-media.com"
+                },
+                "operator": "pinnacle-media.com",
+                "status": "active",
+                "billing": "operator",
+                "account_scope": "operator",
+                "rate_card": "agency_standard",
+                "payment_terms": "net_45"
+              }
+            },
+            {
+              "description": "Account with brand identity and operator (via sync_accounts)",
+              "data": {
+                "account_id": "acc_spark_001",
+                "name": "Spark (via Pinnacle)",
+                "advertiser": "Nova Brands",
+                "status": "active",
+                "brand": {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                "operator": "pinnacle-media.com",
+                "billing": "agent",
+                "account_scope": "operator_brand",
+                "payment_terms": "net_30"
+              }
+            },
+            {
+              "description": "Pending account awaiting seller approval",
+              "data": {
+                "account_id": "acc_glow_pending",
+                "name": "Glow",
+                "advertiser": "Nova Brands",
+                "status": "pending_approval",
+                "brand": {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                "operator": "pinnacle-media.com",
+                "billing": "operator",
+                "account_scope": "brand"
+              }
+            },
+            {
+              "description": "Agency operates but advertiser is billed directly with structured billing entity",
+              "data": {
+                "account_id": "acc_acme_direct_bill",
+                "name": "Acme (billed direct)",
+                "advertiser": "Acme Corp",
+                "brand": {
+                  "domain": "acme-corp.com"
+                },
+                "operator": "pinnacle-media.com",
+                "status": "active",
+                "billing": "advertiser",
+                "billing_entity": {
+                  "legal_name": "Acme Corporation GmbH",
+                  "vat_id": "DE987654321",
+                  "address": {
+                    "street": "Hauptstrasse 42",
+                    "city": "Munich",
+                    "postal_code": "80331",
+                    "country": "DE"
+                  },
+                  "contacts": [
+                    {
+                      "role": "billing",
+                      "name": "AP Department",
+                      "email": "billing@acme-corp.com"
+                    }
+                  ]
+                },
+                "account_scope": "operator_brand",
+                "payment_terms": "net_30"
+              }
+            }
+          ]
+        },
+        "invoice_recipient": {
+          "title": "Business Entity",
+          "description": "Per-buy invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).",
+          "type": "object",
+          "properties": {
+            "legal_name": {
+              "type": "string",
+              "description": "Registered legal name of the business entity",
+              "maxLength": 200
+            },
+            "vat_id": {
+              "type": "string",
+              "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+              "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+            },
+            "tax_id": {
+              "type": "string",
+              "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+              "maxLength": 30
+            },
+            "registration_number": {
+              "type": "string",
+              "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+              "maxLength": 50
+            },
+            "address": {
+              "type": "object",
+              "description": "Postal address for invoicing and legal correspondence",
+              "properties": {
+                "street": {
+                  "type": "string",
+                  "description": "Street address including building number",
+                  "maxLength": 200
+                },
+                "city": {
+                  "type": "string",
+                  "maxLength": 100
+                },
+                "postal_code": {
+                  "type": "string",
+                  "maxLength": 20
+                },
+                "region": {
+                  "type": "string",
+                  "description": "State, province, or region",
+                  "maxLength": 100
+                },
+                "country": {
+                  "type": "string",
+                  "description": "ISO 3166-1 alpha-2 country code",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "required": [
+                "street",
+                "city",
+                "postal_code",
+                "country"
+              ],
+              "additionalProperties": false
+            },
+            "contacts": {
+              "type": "array",
+              "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "role": {
+                    "type": "string",
+                    "enum": [
+                      "billing",
+                      "legal",
+                      "creative",
+                      "general"
+                    ],
+                    "enumDescriptions": {
+                      "billing": "Accounts payable and invoice queries",
+                      "legal": "Contract and compliance matters",
+                      "creative": "Material submission and creative approval",
+                      "general": "Default contact when no specific role applies"
+                    },
+                    "description": "Contact's functional role in the business relationship"
+                  },
+                  "name": {
+                    "type": "string",
+                    "description": "Full name of the contact",
+                    "maxLength": 200
+                  },
+                  "email": {
+                    "type": "string",
+                    "format": "email",
+                    "maxLength": 254
+                  },
+                  "phone": {
+                    "type": "string",
+                    "maxLength": 30
+                  }
+                },
+                "required": [
+                  "role"
+                ],
+                "additionalProperties": false
+              },
+              "maxItems": 10
+            },
+            "bank": {
+              "type": "object",
+              "writeOnly": true,
+              "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+              "properties": {
+                "account_holder": {
+                  "type": "string",
+                  "description": "Name on the bank account",
+                  "maxLength": 200
+                },
+                "iban": {
+                  "type": "string",
+                  "description": "International Bank Account Number (SEPA markets)",
+                  "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+                },
+                "bic": {
+                  "type": "string",
+                  "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+                  "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+                },
+                "routing_number": {
+                  "type": "string",
+                  "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+                  "maxLength": 30
+                },
+                "account_number": {
+                  "type": "string",
+                  "description": "Bank account number for non-SEPA markets",
+                  "maxLength": 30
+                }
+              },
+              "required": [
+                "account_holder"
+              ],
+              "additionalProperties": false
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "legal_name"
+          ],
+          "additionalProperties": false,
+          "examples": [
+            {
+              "description": "German agency with full B2B details",
+              "data": {
+                "legal_name": "Pinnacle Media GmbH",
+                "vat_id": "DE123456789",
+                "registration_number": "HRB 12345",
+                "address": {
+                  "street": "Friedrichstrasse 100",
+                  "city": "Berlin",
+                  "postal_code": "10117",
+                  "country": "DE"
+                },
+                "contacts": [
+                  {
+                    "role": "billing",
+                    "name": "Sam Adeyemi",
+                    "email": "billing@pinnacle-media.com",
+                    "phone": "+49 30 12345678"
+                  }
+                ],
+                "bank": {
+                  "account_holder": "Pinnacle Media GmbH",
+                  "iban": "DE89370400440532013000",
+                  "bic": "COBADEFFXXX"
+                }
+              }
+            },
+            {
+              "description": "US advertiser with EIN and domestic bank details",
+              "data": {
+                "legal_name": "Acme Corporation",
+                "tax_id": "12-3456789",
+                "address": {
+                  "street": "123 Main St",
+                  "city": "New York",
+                  "postal_code": "10001",
+                  "region": "NY",
+                  "country": "US"
+                },
+                "contacts": [
+                  {
+                    "role": "billing",
+                    "name": "AP Department",
+                    "email": "ap@acme-corp.com"
+                  }
+                ],
+                "bank": {
+                  "account_holder": "Acme Corporation",
+                  "routing_number": "021000021",
+                  "account_number": "123456789"
+                }
+              }
+            }
+          ]
+        },
+        "status": {
+          "title": "Media Buy Status",
+          "description": "Initial media buy status. Either 'pending_creatives' (awaiting creative assets), 'pending_start' (ready to serve, waiting for flight date), or 'active' (immediate activation).",
+          "type": "string",
+          "enum": [
+            "pending_creatives",
+            "pending_start",
+            "active",
+            "paused",
+            "completed",
+            "rejected",
+            "canceled"
+          ],
+          "enumDescriptions": {
+            "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+            "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
+            "active": "Media buy is currently running",
+            "paused": "Media buy is temporarily paused",
+            "completed": "Media buy has finished running",
+            "rejected": "Media buy was declined by the seller after creation",
+            "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+          }
+        },
+        "confirmed_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when this media buy was confirmed by the seller. A successful create_media_buy response constitutes order confirmation."
+        },
+        "creative_deadline": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp for creative upload deadline"
+        },
+        "revision": {
+          "type": "integer",
+          "description": "Initial revision number for this media buy. Use in subsequent update_media_buy requests for optimistic concurrency.",
+          "minimum": 1
+        },
+        "valid_actions": {
+          "type": "array",
+          "description": "Actions the buyer can perform on this media buy after creation. Saves a round-trip to get_media_buys.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "pause",
+              "resume",
+              "cancel",
+              "update_budget",
+              "update_dates",
+              "update_packages",
+              "add_packages",
+              "sync_creatives"
+            ]
+          }
+        },
+        "packages": {
+          "type": "array",
+          "description": "Array of created packages with complete state information",
+          "items": {
+            "title": "Package",
+            "description": "A specific product within a media buy (line item)",
+            "type": "object",
+            "properties": {
+              "package_id": {
+                "type": "string",
+                "description": "Seller's unique identifier for the package"
+              },
+              "product_id": {
+                "type": "string",
+                "description": "ID of the product this package is based on"
+              },
+              "budget": {
+                "type": "number",
+                "description": "Budget allocation for this package in the currency specified by the pricing option",
+                "minimum": 0
+              },
+              "pacing": {
+                "title": "Pacing",
+                "description": "Budget pacing strategy",
+                "type": "string",
+                "enum": [
+                  "even",
+                  "asap",
+                  "front_loaded"
+                ],
+                "enumDescriptions": {
+                  "even": "Allocate remaining budget evenly over remaining campaign duration (default)",
+                  "asap": "Spend remaining budget as quickly as possible",
+                  "front_loaded": "Allocate more remaining budget earlier in the remaining campaign period"
+                }
+              },
+              "pricing_option_id": {
+                "type": "string",
+                "description": "ID of the selected pricing option from the product's pricing_options array"
+              },
+              "bid_price": {
+                "type": "number",
+                "description": "Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+                "minimum": 0
+              },
+              "price_breakdown": {
+                "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                "title": "Price Breakdown",
+                "type": "object",
+                "properties": {
+                  "list_price": {
+                    "type": "number",
+                    "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                    "exclusiveMinimum": 0
+                  },
+                  "adjustments": {
+                    "type": "array",
+                    "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "kind": {
+                          "title": "Price Adjustment Kind",
+                          "description": "Categorizes how a price adjustment affects the transaction",
+                          "type": "string",
+                          "enum": [
+                            "fee",
+                            "discount",
+                            "commission",
+                            "settlement"
+                          ],
+                          "enumDescriptions": {
+                            "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                            "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                            "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                            "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                          }
+                        },
+                        "name": {
+                          "type": "string",
+                          "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                          "maxLength": 64,
+                          "examples": [
+                            "ad_serving",
+                            "data_targeting",
+                            "brand_safety",
+                            "volume",
+                            "negotiated",
+                            "early_booking",
+                            "agency",
+                            "intermediary",
+                            "cash_discount",
+                            "early_payment"
+                          ]
+                        },
+                        "rate": {
+                          "type": "number",
+                          "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                          "exclusiveMinimum": 0,
+                          "exclusiveMaximum": 1
+                        },
+                        "amount": {
+                          "type": "number",
+                          "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                          "exclusiveMinimum": 0
+                        },
+                        "description": {
+                          "type": "string",
+                          "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                          "maxLength": 256
+                        },
+                        "beneficiary": {
+                          "type": "string",
+                          "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                          "maxLength": 256
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "name"
+                      ],
+                      "oneOf": [
+                        {
+                          "required": [
+                            "rate"
+                          ]
+                        },
+                        {
+                          "required": [
+                            "amount"
+                          ]
+                        }
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1,
+                    "maxItems": 20
+                  }
+                },
+                "required": [
+                  "list_price",
+                  "adjustments"
+                ],
+                "additionalProperties": true
+              },
+              "impressions": {
+                "type": "number",
+                "description": "Impression goal for this package",
+                "minimum": 0
+              },
+              "catalogs": {
+                "type": "array",
+                "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Echoed from the create_media_buy request.",
+                "items": {
+                  "title": "Catalog",
+                  "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                  "type": "object",
+                  "properties": {
+                    "catalog_id": {
+                      "type": "string",
+                      "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                    },
+                    "name": {
+                      "type": "string",
+                      "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                    },
+                    "type": {
+                      "title": "Catalog Type",
+                      "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                      "type": "string",
+                      "enum": [
+                        "offering",
+                        "product",
+                        "inventory",
+                        "store",
+                        "promotion",
+                        "hotel",
+                        "flight",
+                        "job",
+                        "vehicle",
+                        "real_estate",
+                        "education",
+                        "destination",
+                        "app"
+                      ]
+                    },
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                    },
+                    "feed_format": {
+                      "title": "Feed Format",
+                      "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                      "type": "string",
+                      "enum": [
+                        "google_merchant_center",
+                        "facebook_catalog",
+                        "shopify",
+                        "linkedin_jobs",
+                        "custom"
+                      ]
+                    },
+                    "update_frequency": {
+                      "title": "Update Frequency",
+                      "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                      "type": "string",
+                      "enum": [
+                        "realtime",
+                        "hourly",
+                        "daily",
+                        "weekly"
+                      ]
+                    },
+                    "items": {
+                      "type": "array",
+                      "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                      "items": {
+                        "type": "object"
+                      },
+                      "minItems": 1
+                    },
+                    "ids": {
+                      "type": "array",
+                      "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    },
+                    "gtins": {
+                      "type": "array",
+                      "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[0-9]{8,14}$"
+                      },
+                      "minItems": 1
+                    },
+                    "tags": {
+                      "type": "array",
+                      "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    },
+                    "category": {
+                      "type": "string",
+                      "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                    },
+                    "query": {
+                      "type": "string",
+                      "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                    },
+                    "conversion_events": {
+                      "type": "array",
+                      "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                      "items": {
+                        "title": "Event Type",
+                        "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                        "type": "string",
+                        "enum": [
+                          "page_view",
+                          "view_content",
+                          "select_content",
+                          "select_item",
+                          "search",
+                          "share",
+                          "add_to_cart",
+                          "remove_from_cart",
+                          "viewed_cart",
+                          "add_to_wishlist",
+                          "initiate_checkout",
+                          "add_payment_info",
+                          "purchase",
+                          "refund",
+                          "lead",
+                          "qualify_lead",
+                          "close_convert_lead",
+                          "disqualify_lead",
+                          "complete_registration",
+                          "subscribe",
+                          "start_trial",
+                          "app_install",
+                          "app_launch",
+                          "contact",
+                          "schedule",
+                          "donate",
+                          "submit_application",
+                          "custom"
+                        ],
+                        "enumDescriptions": {
+                          "page_view": "User viewed a page",
+                          "view_content": "User viewed specific content (product, article, etc.)",
+                          "select_content": "User selected or clicked on content (article, video, etc.)",
+                          "select_item": "User selected a specific product or item from a list",
+                          "search": "User performed a search",
+                          "share": "User shared content via social or messaging",
+                          "add_to_cart": "User added an item to cart",
+                          "remove_from_cart": "User removed an item from cart",
+                          "viewed_cart": "User viewed their shopping cart",
+                          "add_to_wishlist": "User added an item to a wishlist",
+                          "initiate_checkout": "User started checkout process",
+                          "add_payment_info": "User added payment information",
+                          "purchase": "User completed a purchase",
+                          "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                          "lead": "User expressed interest (form submission, signup, etc.)",
+                          "qualify_lead": "Lead qualified by sales or scoring criteria",
+                          "close_convert_lead": "Lead converted to a customer or closed deal",
+                          "disqualify_lead": "Lead disqualified or marked as not viable",
+                          "complete_registration": "User completed account registration",
+                          "subscribe": "User subscribed to a service or newsletter",
+                          "start_trial": "User started a free trial",
+                          "app_install": "User installed an application",
+                          "app_launch": "User launched an application",
+                          "contact": "User initiated contact (call, message, etc.)",
+                          "schedule": "User scheduled an appointment or event",
+                          "donate": "User made a donation",
+                          "submit_application": "User submitted an application (loan, job, etc.)",
+                          "custom": "Custom event type (specify in custom_event_name)"
+                        }
+                      },
+                      "minItems": 1,
+                      "uniqueItems": true
+                    },
+                    "content_id_type": {
+                      "title": "Content ID Type",
+                      "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                      "type": "string",
+                      "enum": [
+                        "sku",
+                        "gtin",
+                        "offering_id",
+                        "job_id",
+                        "hotel_id",
+                        "flight_id",
+                        "vehicle_id",
+                        "listing_id",
+                        "store_id",
+                        "program_id",
+                        "destination_id",
+                        "app_id"
+                      ]
+                    },
+                    "feed_field_mappings": {
+                      "type": "array",
+                      "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                      "items": {
+                        "title": "Catalog Field Mapping",
+                        "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                        "type": "object",
+                        "properties": {
+                          "feed_field": {
+                            "type": "string",
+                            "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                          },
+                          "catalog_field": {
+                            "type": "string",
+                            "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                          },
+                          "asset_group_id": {
+                            "type": "string",
+                            "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                          },
+                          "value": {
+                            "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                          },
+                          "transform": {
+                            "type": "string",
+                            "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                            "enum": [
+                              "date",
+                              "divide",
+                              "boolean",
+                              "split"
+                            ]
+                          },
+                          "format": {
+                            "type": "string",
+                            "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                          },
+                          "timezone": {
+                            "type": "string",
+                            "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                          },
+                          "by": {
+                            "type": "number",
+                            "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                            "exclusiveMinimum": 0
+                          },
+                          "separator": {
+                            "type": "string",
+                            "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                            "default": ","
+                          },
+                          "default": {
+                            "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "allOf": [
+                          {
+                            "not": {
+                              "required": [
+                                "feed_field",
+                                "value"
+                              ]
+                            }
+                          },
+                          {
+                            "not": {
+                              "required": [
+                                "catalog_field",
+                                "asset_group_id"
+                              ]
+                            }
+                          }
+                        ],
+                        "additionalProperties": true,
+                        "examples": [
+                          {
+                            "description": "Simple field rename",
+                            "data": {
+                              "feed_field": "hotel_name",
+                              "catalog_field": "name"
+                            }
+                          },
+                          {
+                            "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                            "data": {
+                              "feed_field": "available_from",
+                              "catalog_field": "valid_from",
+                              "transform": "date",
+                              "format": "YYYYMMDD",
+                              "timezone": "UTC"
+                            }
+                          },
+                          {
+                            "description": "Divide cents to dollars",
+                            "data": {
+                              "feed_field": "price_cents",
+                              "catalog_field": "price.amount",
+                              "transform": "divide",
+                              "by": 100
+                            }
+                          },
+                          {
+                            "description": "Static literal injection \u2014 currency not in feed",
+                            "data": {
+                              "catalog_field": "price.currency",
+                              "value": "USD"
+                            }
+                          },
+                          {
+                            "description": "Image URL assigned to typed asset pool",
+                            "data": {
+                              "feed_field": "primary_photo_url",
+                              "asset_group_id": "images_landscape"
+                            }
+                          },
+                          {
+                            "description": "Vertical photo URL assigned to vertical pool",
+                            "data": {
+                              "feed_field": "portrait_photo_url",
+                              "asset_group_id": "images_vertical"
+                            }
+                          },
+                          {
+                            "description": "Split comma-separated tags to array",
+                            "data": {
+                              "feed_field": "amenity_list",
+                              "catalog_field": "amenities",
+                              "transform": "split",
+                              "separator": ","
+                            }
+                          },
+                          {
+                            "description": "Boolean coercion with default",
+                            "data": {
+                              "feed_field": "is_available",
+                              "catalog_field": "available",
+                              "transform": "boolean",
+                              "default": false
+                            }
+                          }
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "type"
+                  ],
+                  "additionalProperties": true,
+                  "examples": [
+                    {
+                      "description": "Synced product catalog from Google Merchant Center",
+                      "data": {
+                        "catalog_id": "gmc-primary",
+                        "name": "Primary Product Feed",
+                        "type": "product",
+                        "url": "https://feeds.acmecorp.com/products.xml",
+                        "feed_format": "google_merchant_center",
+                        "update_frequency": "daily"
+                      }
+                    },
+                    {
+                      "description": "Inventory feed for store-level stock data",
+                      "data": {
+                        "catalog_id": "store-inventory",
+                        "name": "Store Inventory",
+                        "type": "inventory",
+                        "url": "https://feeds.acmecorp.com/inventory.json",
+                        "feed_format": "custom",
+                        "update_frequency": "hourly"
+                      }
+                    },
+                    {
+                      "description": "Store locator feed",
+                      "data": {
+                        "catalog_id": "retail-locations",
+                        "name": "Retail Locations",
+                        "type": "store",
+                        "url": "https://feeds.acmecorp.com/stores.json",
+                        "feed_format": "custom",
+                        "update_frequency": "weekly"
+                      }
+                    },
+                    {
+                      "description": "Promotional pricing feed",
+                      "data": {
+                        "catalog_id": "summer-sale",
+                        "name": "Summer Sale Promotions",
+                        "type": "promotion",
+                        "url": "https://feeds.acmecorp.com/promotions.json",
+                        "feed_format": "google_merchant_center",
+                        "update_frequency": "daily"
+                      }
+                    },
+                    {
+                      "description": "Inline offering catalog (no sync needed)",
+                      "data": {
+                        "type": "offering",
+                        "items": [
+                          {
+                            "offering_id": "summer-sale",
+                            "name": "Summer Sale",
+                            "landing_url": "https://acme.com/summer"
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "description": "Reference to a previously synced catalog by ID",
+                      "data": {
+                        "catalog_id": "gmc-primary",
+                        "type": "product",
+                        "ids": [
+                          "SKU-12345",
+                          "SKU-67890"
+                        ]
+                      }
+                    },
+                    {
+                      "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                      "data": {
+                        "type": "product",
+                        "gtins": [
+                          "00013000006040",
+                          "00013000006057"
+                        ],
+                        "content_id_type": "gtin",
+                        "conversion_events": [
+                          "purchase",
+                          "add_to_cart"
+                        ]
+                      }
+                    },
+                    {
+                      "description": "Inline store catalog with catchment areas",
+                      "data": {
+                        "catalog_id": "retail-locations",
+                        "name": "Retail Locations",
+                        "type": "store",
+                        "items": [
+                          {
+                            "store_id": "amsterdam-flagship",
+                            "name": "Amsterdam Flagship",
+                            "location": {
+                              "lat": 52.3676,
+                              "lng": 4.9041
+                            },
+                            "catchments": [
+                              {
+                                "catchment_id": "walk",
+                                "travel_time": {
+                                  "value": 10,
+                                  "unit": "min"
+                                },
+                                "transport_mode": "walking"
+                              },
+                              {
+                                "catchment_id": "drive",
+                                "travel_time": {
+                                  "value": 15,
+                                  "unit": "min"
+                                },
+                                "transport_mode": "driving"
+                              }
+                            ]
+                          }
+                        ]
+                      }
+                    }
+                  ]
+                }
+              },
+              "format_ids": {
+                "type": "array",
+                "description": "Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.",
+                "items": {
+                  "title": "Format ID",
+                  "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                    },
+                    "id": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$",
+                      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "duration_ms": {
+                      "type": "number",
+                      "minimum": 1,
+                      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                    }
+                  },
+                  "required": [
+                    "agent_url",
+                    "id"
+                  ],
+                  "additionalProperties": true,
+                  "dependencies": {
+                    "width": [
+                      "height"
+                    ],
+                    "height": [
+                      "width"
+                    ]
+                  }
+                }
+              },
+              "targeting_overlay": {
+                "title": "Targeting Overlay",
+                "description": "Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).",
+                "type": "object",
+                "properties": {
+                  "geo_countries": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_countries_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_regions": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_regions_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_metros": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Metro Area System",
+                          "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                          "type": "string",
+                          "enum": [
+                            "nielsen_dma",
+                            "uk_itl1",
+                            "uk_itl2",
+                            "eurostat_nuts2",
+                            "custom"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "geo_metros_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Metro Area System",
+                          "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                          "type": "string",
+                          "enum": [
+                            "nielsen_dma",
+                            "uk_itl1",
+                            "uk_itl2",
+                            "eurostat_nuts2",
+                            "custom"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "geo_postal_areas": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Postal Code System",
+                          "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                          "type": "string",
+                          "enum": [
+                            "us_zip",
+                            "us_zip_plus_four",
+                            "gb_outward",
+                            "gb_full",
+                            "ca_fsa",
+                            "ca_full",
+                            "de_plz",
+                            "fr_code_postal",
+                            "au_postcode",
+                            "ch_plz",
+                            "at_plz"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "geo_postal_areas_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Postal Code System",
+                          "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                          "type": "string",
+                          "enum": [
+                            "us_zip",
+                            "us_zip_plus_four",
+                            "gb_outward",
+                            "gb_full",
+                            "ca_fsa",
+                            "ca_full",
+                            "de_plz",
+                            "fr_code_postal",
+                            "au_postcode",
+                            "ch_plz",
+                            "at_plz"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "daypart_targets": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
+                    "items": {
+                      "title": "Daypart Target",
+                      "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+                      "type": "object",
+                      "properties": {
+                        "days": {
+                          "type": "array",
+                          "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
+                          "items": {
+                            "title": "Day of Week",
+                            "description": "Days of the week for daypart targeting",
+                            "type": "string",
+                            "enum": [
+                              "monday",
+                              "tuesday",
+                              "wednesday",
+                              "thursday",
+                              "friday",
+                              "saturday",
+                              "sunday"
+                            ]
+                          },
+                          "minItems": 1
+                        },
+                        "start_hour": {
+                          "type": "integer",
+                          "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+                          "minimum": 0,
+                          "maximum": 23
+                        },
+                        "end_hour": {
+                          "type": "integer",
+                          "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
+                          "minimum": 1,
+                          "maximum": 24
+                        },
+                        "label": {
+                          "type": "string",
+                          "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+                        }
+                      },
+                      "required": [
+                        "days",
+                        "start_hour",
+                        "end_hour"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "axe_include_segment": {
+                    "type": "string",
+                    "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
+                    "deprecated": true
+                  },
+                  "axe_exclude_segment": {
+                    "type": "string",
+                    "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
+                    "deprecated": true
+                  },
+                  "audience_include": {
+                    "type": "array",
+                    "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1
+                  },
+                  "audience_exclude": {
+                    "type": "array",
+                    "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1
+                  },
+                  "frequency_cap": {
+                    "title": "Frequency Cap",
+                    "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
+                    "type": "object",
+                    "properties": {
+                      "suppress": {
+                        "allOf": [
+                          {
+                            "title": "Duration",
+                            "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                            "type": "object",
+                            "properties": {
+                              "interval": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                              },
+                              "unit": {
+                                "type": "string",
+                                "enum": [
+                                  "seconds",
+                                  "minutes",
+                                  "hours",
+                                  "days",
+                                  "campaign"
+                                ],
+                                "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                              }
+                            },
+                            "required": [
+                              "interval",
+                              "unit"
+                            ],
+                            "additionalProperties": false
+                          }
+                        ],
+                        "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+                      },
+                      "suppress_minutes": {
+                        "type": "number",
+                        "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+                        "minimum": 0
+                      },
+                      "max_impressions": {
+                        "type": "integer",
+                        "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+                        "minimum": 1
+                      },
+                      "per": {
+                        "allOf": [
+                          {
+                            "title": "Reach Unit",
+                            "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                            "type": "string",
+                            "enum": [
+                              "individuals",
+                              "households",
+                              "devices",
+                              "accounts",
+                              "cookies",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                              "households": "Unique households or TV homes.",
+                              "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                              "accounts": "Unique logged-in accounts (platform-specific identity).",
+                              "cookies": "Unique browser cookies.",
+                              "custom": "Publisher-defined reach unit. Describe in ext."
+                            }
+                          }
+                        ],
+                        "description": "Entity granularity for impression counting. Required when max_impressions is set."
+                      },
+                      "window": {
+                        "allOf": [
+                          {
+                            "title": "Duration",
+                            "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                            "type": "object",
+                            "properties": {
+                              "interval": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                              },
+                              "unit": {
+                                "type": "string",
+                                "enum": [
+                                  "seconds",
+                                  "minutes",
+                                  "hours",
+                                  "days",
+                                  "campaign"
+                                ],
+                                "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                              }
+                            },
+                            "required": [
+                              "interval",
+                              "unit"
+                            ],
+                            "additionalProperties": false
+                          }
+                        ],
+                        "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+                      }
+                    },
+                    "anyOf": [
+                      {
+                        "required": [
+                          "suppress"
+                        ]
+                      },
+                      {
+                        "required": [
+                          "suppress_minutes"
+                        ]
+                      },
+                      {
+                        "required": [
+                          "max_impressions"
+                        ]
+                      }
+                    ],
+                    "dependencies": {
+                      "max_impressions": [
+                        "per",
+                        "window"
+                      ],
+                      "per": [
+                        "max_impressions"
+                      ],
+                      "window": [
+                        "max_impressions"
+                      ]
+                    },
+                    "additionalProperties": true
+                  },
+                  "property_list": {
+                    "title": "Property List Reference",
+                    "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent managing the property list"
+                      },
+                      "list_id": {
+                        "type": "string",
+                        "description": "Identifier for the property list within the agent",
+                        "minLength": 1
+                      },
+                      "auth_token": {
+                        "type": "string",
+                        "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "list_id"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "collection_list": {
+                    "title": "Collection List Reference",
+                    "description": "Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent managing the collection list"
+                      },
+                      "list_id": {
+                        "type": "string",
+                        "description": "Identifier for the collection list within the agent",
+                        "minLength": 1
+                      },
+                      "auth_token": {
+                        "type": "string",
+                        "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "list_id"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "collection_list_exclude": {
+                    "title": "Collection List Reference",
+                    "description": "Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent managing the collection list"
+                      },
+                      "list_id": {
+                        "type": "string",
+                        "description": "Identifier for the collection list within the agent",
+                        "minLength": 1
+                      },
+                      "auth_token": {
+                        "type": "string",
+                        "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "list_id"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "age_restriction": {
+                    "type": "object",
+                    "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
+                    "properties": {
+                      "min": {
+                        "type": "integer",
+                        "minimum": 13,
+                        "maximum": 99,
+                        "description": "Minimum age required"
+                      },
+                      "verification_required": {
+                        "type": "boolean",
+                        "default": false,
+                        "description": "Whether verified age (not inferred) is required for compliance"
+                      },
+                      "accepted_methods": {
+                        "type": "array",
+                        "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
+                        "items": {
+                          "title": "Age Verification Method",
+                          "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+                          "type": "string",
+                          "enum": [
+                            "facial_age_estimation",
+                            "id_document",
+                            "digital_id",
+                            "credit_card",
+                            "world_id"
+                          ]
+                        },
+                        "minItems": 1
+                      }
+                    },
+                    "required": [
+                      "min"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "device_platform": {
+                    "type": "array",
+                    "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
+                    "items": {
+                      "title": "Device Platform",
+                      "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
+                      "type": "string",
+                      "enum": [
+                        "ios",
+                        "android",
+                        "windows",
+                        "macos",
+                        "linux",
+                        "chromeos",
+                        "tvos",
+                        "tizen",
+                        "webos",
+                        "fire_os",
+                        "roku_os",
+                        "unknown"
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "device_type": {
+                    "type": "array",
+                    "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+                    "items": {
+                      "title": "Device Type",
+                      "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                      "type": "string",
+                      "enum": [
+                        "desktop",
+                        "mobile",
+                        "tablet",
+                        "ctv",
+                        "dooh",
+                        "unknown"
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "device_type_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+                    "items": {
+                      "title": "Device Type",
+                      "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                      "type": "string",
+                      "enum": [
+                        "desktop",
+                        "mobile",
+                        "tablet",
+                        "ctv",
+                        "dooh",
+                        "unknown"
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "store_catchments": {
+                    "type": "array",
+                    "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "catalog_id": {
+                          "type": "string",
+                          "description": "Synced store-type catalog ID from sync_catalogs."
+                        },
+                        "store_ids": {
+                          "type": "array",
+                          "description": "Filter to specific stores within the catalog. Omit to target all stores.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "catchment_ids": {
+                          "type": "array",
+                          "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "catalog_id"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1
+                  },
+                  "geo_proximity": {
+                    "type": "array",
+                    "description": "Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics \u2014 a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "lat": {
+                          "type": "number",
+                          "minimum": -90,
+                          "maximum": 90,
+                          "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                        },
+                        "lng": {
+                          "type": "number",
+                          "minimum": -180,
+                          "maximum": 180,
+                          "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                        },
+                        "label": {
+                          "type": "string",
+                          "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area')."
+                        },
+                        "travel_time": {
+                          "type": "object",
+                          "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
+                          "properties": {
+                            "value": {
+                              "type": "number",
+                              "minimum": 1,
+                              "description": "Travel time limit."
+                            },
+                            "unit": {
+                              "type": "string",
+                              "enum": [
+                                "min",
+                                "hr"
+                              ],
+                              "description": "Time unit."
+                            }
+                          },
+                          "required": [
+                            "value",
+                            "unit"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "transport_mode": {
+                          "title": "Transport Mode",
+                          "description": "Transportation mode for isochrone calculation. Required when travel_time is provided.",
+                          "type": "string",
+                          "enum": [
+                            "walking",
+                            "cycling",
+                            "driving",
+                            "public_transport"
+                          ],
+                          "enumDescriptions": {
+                            "walking": "Pedestrian travel on walkable paths and sidewalks",
+                            "cycling": "Bicycle travel on roads and cycle paths",
+                            "driving": "Motor vehicle travel on road networks",
+                            "public_transport": "Public transit including bus, rail, metro, and ferry"
+                          }
+                        },
+                        "radius": {
+                          "type": "object",
+                          "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
+                          "properties": {
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Radius distance."
+                            },
+                            "unit": {
+                              "title": "Distance Unit",
+                              "description": "Distance unit.",
+                              "type": "string",
+                              "enum": [
+                                "km",
+                                "mi",
+                                "m"
+                              ],
+                              "enumDescriptions": {
+                                "km": "Kilometers",
+                                "mi": "Miles",
+                                "m": "Meters"
+                              }
+                            }
+                          },
+                          "required": [
+                            "value",
+                            "unit"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "geometry": {
+                          "type": "object",
+                          "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "enum": [
+                                "Polygon",
+                                "MultiPolygon"
+                              ],
+                              "description": "GeoJSON geometry type."
+                            },
+                            "coordinates": {
+                              "type": "array",
+                              "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "coordinates"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "oneOf": [
+                        {
+                          "required": [
+                            "lat",
+                            "lng",
+                            "travel_time",
+                            "transport_mode"
+                          ],
+                          "not": {
+                            "anyOf": [
+                              {
+                                "required": [
+                                  "radius"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "geometry"
+                                ]
+                              }
+                            ]
+                          }
+                        },
+                        {
+                          "required": [
+                            "lat",
+                            "lng",
+                            "radius"
+                          ],
+                          "not": {
+                            "anyOf": [
+                              {
+                                "required": [
+                                  "travel_time"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "geometry"
+                                ]
+                              }
+                            ]
+                          }
+                        },
+                        {
+                          "required": [
+                            "geometry"
+                          ],
+                          "not": {
+                            "anyOf": [
+                              {
+                                "required": [
+                                  "travel_time"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "radius"
+                                ]
+                              }
+                            ]
+                          }
+                        }
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1
+                  },
+                  "language": {
+                    "type": "array",
+                    "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[a-z]{2}$"
+                    },
+                    "minItems": 1
+                  },
+                  "keyword_targets": {
+                    "type": "array",
+                    "description": "Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) \u2014 the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "keyword": {
+                          "type": "string",
+                          "minLength": 1,
+                          "description": "The keyword to target"
+                        },
+                        "match_type": {
+                          "type": "string",
+                          "enum": [
+                            "broad",
+                            "phrase",
+                            "exact"
+                          ],
+                          "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly"
+                        },
+                        "bid_price": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies."
+                        }
+                      },
+                      "required": [
+                        "keyword",
+                        "match_type"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "negative_keywords": {
+                    "type": "array",
+                    "description": "Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "keyword": {
+                          "type": "string",
+                          "minLength": 1,
+                          "description": "The keyword to exclude"
+                        },
+                        "match_type": {
+                          "type": "string",
+                          "enum": [
+                            "broad",
+                            "phrase",
+                            "exact"
+                          ],
+                          "description": "Match type for exclusion"
+                        }
+                      },
+                      "required": [
+                        "keyword",
+                        "match_type"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  }
+                },
+                "additionalProperties": true
+              },
+              "measurement_terms": {
+                "title": "Measurement Terms",
+                "description": "Agreed billing measurement and makegood terms for this package. Reflects what was negotiated \u2014 may differ from the buyer's proposal or the product's defaults. When present, these terms are binding for the package's duration.",
+                "type": "object",
+                "properties": {
+                  "billing_measurement": {
+                    "type": "object",
+                    "description": "Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV).",
+                    "properties": {
+                      "vendor": {
+                        "title": "Brand Reference",
+                        "description": "Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+                        "type": "object",
+                        "properties": {
+                          "domain": {
+                            "type": "string",
+                            "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                          },
+                          "brand_id": {
+                            "title": "Brand ID",
+                            "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                            "type": "string",
+                            "pattern": "^[a-z0-9_]+$",
+                            "examples": [
+                              "tide",
+                              "cheerios",
+                              "air_jordan",
+                              "nike",
+                              "pampers"
+                            ]
+                          }
+                        },
+                        "required": [
+                          "domain"
+                        ],
+                        "additionalProperties": false,
+                        "examples": [
+                          {
+                            "domain": "nova-brands.com",
+                            "brand_id": "spark"
+                          },
+                          {
+                            "domain": "nova-brands.com",
+                            "brand_id": "glow"
+                          },
+                          {
+                            "domain": "acme-corp.com"
+                          }
+                        ]
+                      },
+                      "max_variance_percent": {
+                        "type": "number",
+                        "minimum": 0,
+                        "exclusiveMaximum": 100,
+                        "description": "Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review)."
+                      },
+                      "measurement_window": {
+                        "type": "string",
+                        "description": "Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+                        "examples": [
+                          "live",
+                          "c3",
+                          "c7",
+                          "tentative",
+                          "final",
+                          "post_ivt",
+                          "post_sivt",
+                          "downloads_30d"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "vendor"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "makegood_policy": {
+                    "type": "object",
+                    "description": "Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.",
+                    "properties": {
+                      "available_remedies": {
+                        "type": "array",
+                        "description": "Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.",
+                        "items": {
+                          "title": "Makegood Remedy",
+                          "description": "Remedy types available when a performance standard or billing measurement threshold is breached.",
+                          "type": "string",
+                          "enum": [
+                            "additional_delivery",
+                            "credit",
+                            "invoice_adjustment"
+                          ],
+                          "enumDescriptions": {
+                            "additional_delivery": "Seller extends or adds impressions to compensate for the shortfall. Delivery is like-for-like on the same campaign or a subsequent campaign within the same account.",
+                            "credit": "Seller issues a credit toward future media buys on the same account.",
+                            "invoice_adjustment": "Seller reduces the invoice for the current media buy to reflect actual delivered value."
+                          }
+                        },
+                        "minItems": 1,
+                        "uniqueItems": true
+                      }
+                    },
+                    "required": [
+                      "available_remedies"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "additionalProperties": true
+              },
+              "performance_standards": {
+                "type": "array",
+                "description": "Agreed performance standards for this package. When any entry specifies a vendor, creatives assigned to this package MUST include corresponding tracker_script or tracker_pixel assets from that vendor.",
+                "items": {
+                  "title": "Performance Standard",
+                  "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+                  "type": "object",
+                  "properties": {
+                    "metric": {
+                      "title": "Performance Standard Metric",
+                      "description": "The performance metric this standard applies to.",
+                      "type": "string",
+                      "enum": [
+                        "viewability",
+                        "ivt",
+                        "completion_rate",
+                        "brand_safety",
+                        "attention_score"
+                      ],
+                      "enumDescriptions": {
+                        "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+                        "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+                        "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                        "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                        "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+                      }
+                    },
+                    "threshold": {
+                      "type": "number",
+                      "minimum": 0,
+                      "maximum": 1,
+                      "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+                    },
+                    "standard": {
+                      "title": "Viewability Standard",
+                      "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+                      "type": "string",
+                      "enum": [
+                        "mrc",
+                        "groupm"
+                      ],
+                      "enumDescriptions": {
+                        "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                        "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                      }
+                    },
+                    "vendor": {
+                      "title": "Brand Reference",
+                      "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+                      "type": "object",
+                      "properties": {
+                        "domain": {
+                          "type": "string",
+                          "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                        },
+                        "brand_id": {
+                          "title": "Brand ID",
+                          "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                          "type": "string",
+                          "pattern": "^[a-z0-9_]+$",
+                          "examples": [
+                            "tide",
+                            "cheerios",
+                            "air_jordan",
+                            "nike",
+                            "pampers"
+                          ]
+                        }
+                      },
+                      "required": [
+                        "domain"
+                      ],
+                      "additionalProperties": false,
+                      "examples": [
+                        {
+                          "domain": "nova-brands.com",
+                          "brand_id": "spark"
+                        },
+                        {
+                          "domain": "nova-brands.com",
+                          "brand_id": "glow"
+                        },
+                        {
+                          "domain": "acme-corp.com"
+                        }
+                      ]
+                    }
+                  },
+                  "required": [
+                    "metric",
+                    "threshold",
+                    "vendor"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "creative_assignments": {
+                "type": "array",
+                "description": "Creative assets assigned to this package",
+                "items": {
+                  "title": "Creative Assignment",
+                  "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
+                  "type": "object",
+                  "properties": {
+                    "creative_id": {
+                      "type": "string",
+                      "description": "Unique identifier for the creative"
+                    },
+                    "weight": {
+                      "type": "number",
+                      "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+                      "minimum": 0,
+                      "maximum": 100
+                    },
+                    "placement_ids": {
+                      "type": "array",
+                      "description": "Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "creative_id"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "format_ids_to_provide": {
+                "type": "array",
+                "description": "Format IDs that creative assets will be provided for this package",
+                "items": {
+                  "title": "Format ID",
+                  "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                    },
+                    "id": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$",
+                      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "duration_ms": {
+                      "type": "number",
+                      "minimum": 1,
+                      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                    }
+                  },
+                  "required": [
+                    "agent_url",
+                    "id"
+                  ],
+                  "additionalProperties": true,
+                  "dependencies": {
+                    "width": [
+                      "height"
+                    ],
+                    "height": [
+                      "width"
+                    ]
+                  }
+                }
+              },
+              "optimization_goals": {
+                "type": "array",
+                "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
+                "items": {
+                  "title": "Optimization Goal",
+                  "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "description": "Optimize for a seller-tracked delivery metric. No event source required \u2014 the seller tracks these natively.",
+                      "properties": {
+                        "kind": {
+                          "type": "string",
+                          "const": "metric"
+                        },
+                        "metric": {
+                          "type": "string",
+                          "enum": [
+                            "clicks",
+                            "views",
+                            "completed_views",
+                            "viewed_seconds",
+                            "attention_seconds",
+                            "attention_score",
+                            "engagements",
+                            "follows",
+                            "saves",
+                            "profile_visits",
+                            "reach"
+                          ],
+                          "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+                        },
+                        "reach_unit": {
+                          "allOf": [
+                            {
+                              "title": "Reach Unit",
+                              "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                              "type": "string",
+                              "enum": [
+                                "individuals",
+                                "households",
+                                "devices",
+                                "accounts",
+                                "cookies",
+                                "custom"
+                              ],
+                              "enumDescriptions": {
+                                "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                "households": "Unique households or TV homes.",
+                                "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                "cookies": "Unique browser cookies.",
+                                "custom": "Publisher-defined reach unit. Describe in ext."
+                              }
+                            }
+                          ],
+                          "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+                        },
+                        "target_frequency": {
+                          "type": "object",
+                          "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
+                          "properties": {
+                            "min": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1)."
+                            },
+                            "max": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point."
+                            },
+                            "window": {
+                              "allOf": [
+                                {
+                                  "title": "Duration",
+                                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                                  "type": "object",
+                                  "properties": {
+                                    "interval": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                    },
+                                    "unit": {
+                                      "type": "string",
+                                      "enum": [
+                                        "seconds",
+                                        "minutes",
+                                        "hours",
+                                        "days",
+                                        "campaign"
+                                      ],
+                                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                    }
+                                  },
+                                  "required": [
+                                    "interval",
+                                    "unit"
+                                  ],
+                                  "additionalProperties": false
+                                }
+                              ],
+                              "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
+                            }
+                          },
+                          "required": [
+                            "window"
+                          ],
+                          "anyOf": [
+                            {
+                              "required": [
+                                "min"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "max"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "view_duration_seconds": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies."
+                        },
+                        "target": {
+                          "description": "Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Target cost per unit of the metric (e.g., cost per click, cost per completed view).",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "cost_per"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Target cost per metric unit in the buy currency"
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "description": "Minimum per-impression rate for this metric. The metric defines the units: proportions for count metrics (e.g., 0.001 for 0.1% CTR, 0.70 for 70% viewability), seconds for duration metrics (e.g., 3.0 for 3s in view), or score for score metrics.",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "threshold_rate"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score)."
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        "priority": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "metric"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "description": "Optimize for advertiser-tracked conversion events. Requires event sources registered via sync_event_sources.",
+                      "properties": {
+                        "kind": {
+                          "type": "string",
+                          "const": "event"
+                        },
+                        "event_sources": {
+                          "type": "array",
+                          "description": "Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries \u2014 the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "event_source_id": {
+                                "type": "string",
+                                "minLength": 1,
+                                "description": "Event source to include (must be configured on this account via sync_event_sources)"
+                              },
+                              "event_type": {
+                                "title": "Event Type",
+                                "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)",
+                                "type": "string",
+                                "enum": [
+                                  "page_view",
+                                  "view_content",
+                                  "select_content",
+                                  "select_item",
+                                  "search",
+                                  "share",
+                                  "add_to_cart",
+                                  "remove_from_cart",
+                                  "viewed_cart",
+                                  "add_to_wishlist",
+                                  "initiate_checkout",
+                                  "add_payment_info",
+                                  "purchase",
+                                  "refund",
+                                  "lead",
+                                  "qualify_lead",
+                                  "close_convert_lead",
+                                  "disqualify_lead",
+                                  "complete_registration",
+                                  "subscribe",
+                                  "start_trial",
+                                  "app_install",
+                                  "app_launch",
+                                  "contact",
+                                  "schedule",
+                                  "donate",
+                                  "submit_application",
+                                  "custom"
+                                ],
+                                "enumDescriptions": {
+                                  "page_view": "User viewed a page",
+                                  "view_content": "User viewed specific content (product, article, etc.)",
+                                  "select_content": "User selected or clicked on content (article, video, etc.)",
+                                  "select_item": "User selected a specific product or item from a list",
+                                  "search": "User performed a search",
+                                  "share": "User shared content via social or messaging",
+                                  "add_to_cart": "User added an item to cart",
+                                  "remove_from_cart": "User removed an item from cart",
+                                  "viewed_cart": "User viewed their shopping cart",
+                                  "add_to_wishlist": "User added an item to a wishlist",
+                                  "initiate_checkout": "User started checkout process",
+                                  "add_payment_info": "User added payment information",
+                                  "purchase": "User completed a purchase",
+                                  "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                  "lead": "User expressed interest (form submission, signup, etc.)",
+                                  "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                  "close_convert_lead": "Lead converted to a customer or closed deal",
+                                  "disqualify_lead": "Lead disqualified or marked as not viable",
+                                  "complete_registration": "User completed account registration",
+                                  "subscribe": "User subscribed to a service or newsletter",
+                                  "start_trial": "User started a free trial",
+                                  "app_install": "User installed an application",
+                                  "app_launch": "User launched an application",
+                                  "contact": "User initiated contact (call, message, etc.)",
+                                  "schedule": "User scheduled an appointment or event",
+                                  "donate": "User made a donation",
+                                  "submit_application": "User submitted an application (loan, job, etc.)",
+                                  "custom": "Custom event type (specify in custom_event_name)"
+                                }
+                              },
+                              "custom_event_name": {
+                                "type": "string",
+                                "description": "Required when event_type is 'custom'. Platform-specific name for the custom event."
+                              },
+                              "value_field": {
+                                "type": "string",
+                                "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' \u2014 sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism."
+                              },
+                              "value_factor": {
+                                "type": "number",
+                                "default": 1,
+                                "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics."
+                              }
+                            },
+                            "required": [
+                              "event_source_id",
+                              "event_type"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1
+                        },
+                        "target": {
+                          "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget \u2014 regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Target cost per conversion event (after deduplication across event_sources).",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "cost_per"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Target cost per event in the buy currency"
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "description": "Target return per unit of ad spend, calculated as sum(value_field * value_factor) / spend across all deduplicated events. Requires value_field on at least one event_sources entry.",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "per_ad_spend"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)"
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "description": "Maximize total conversion value within budget, without a specific return ratio target. Steers spend toward higher-value conversions rather than maximizing conversion count. Requires value_field on at least one event_sources entry.",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "maximize_value"
+                                }
+                              },
+                              "required": [
+                                "kind"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        "attribution_window": {
+                          "type": "object",
+                          "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
+                          "properties": {
+                            "post_click": {
+                              "allOf": [
+                                {
+                                  "title": "Duration",
+                                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                                  "type": "object",
+                                  "properties": {
+                                    "interval": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                    },
+                                    "unit": {
+                                      "type": "string",
+                                      "enum": [
+                                        "seconds",
+                                        "minutes",
+                                        "hours",
+                                        "days",
+                                        "campaign"
+                                      ],
+                                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                    }
+                                  },
+                                  "required": [
+                                    "interval",
+                                    "unit"
+                                  ],
+                                  "additionalProperties": false
+                                }
+                              ],
+                              "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
+                            },
+                            "post_view": {
+                              "allOf": [
+                                {
+                                  "title": "Duration",
+                                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                                  "type": "object",
+                                  "properties": {
+                                    "interval": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                    },
+                                    "unit": {
+                                      "type": "string",
+                                      "enum": [
+                                        "seconds",
+                                        "minutes",
+                                        "hours",
+                                        "days",
+                                        "campaign"
+                                      ],
+                                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                    }
+                                  },
+                                  "required": [
+                                    "interval",
+                                    "unit"
+                                  ],
+                                  "additionalProperties": false
+                                }
+                              ],
+                              "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
+                            }
+                          },
+                          "required": [
+                            "post_click"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "priority": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "event_sources"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                "minItems": 1
+              },
+              "start_time": {
+                "type": "string",
+                "format": "date-time",
+                "not": {
+                  "const": "asap"
+                },
+                "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+              },
+              "end_time": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+              },
+              "paused": {
+                "type": "boolean",
+                "description": "Whether this package is paused by the buyer. Paused packages do not deliver impressions. Defaults to false.",
+                "default": false
+              },
+              "canceled": {
+                "type": "boolean",
+                "description": "Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.",
+                "default": false
+              },
+              "cancellation": {
+                "type": "object",
+                "description": "Cancellation metadata. Present only when canceled is true.",
+                "required": [
+                  "canceled_at",
+                  "canceled_by"
+                ],
+                "properties": {
+                  "canceled_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "ISO 8601 timestamp when this package was canceled."
+                  },
+                  "canceled_by": {
+                    "title": "Canceled By",
+                    "description": "Which party initiated the package cancellation.",
+                    "type": "string",
+                    "enum": [
+                      "buyer",
+                      "seller"
+                    ],
+                    "enumDescriptions": {
+                      "buyer": "Cancellation initiated by the buyer via update_media_buy",
+                      "seller": "Cancellation initiated by the seller (e.g., policy violation, inventory withdrawal)"
+                    }
+                  },
+                  "reason": {
+                    "type": "string",
+                    "description": "Reason the package was canceled.",
+                    "maxLength": 500
+                  },
+                  "acknowledged_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation."
+                  }
+                },
+                "additionalProperties": false
+              },
+              "agency_estimate_number": {
+                "type": "string",
+                "maxLength": 100,
+                "description": "Agency estimate or authorization number for this package. Echoed from the buyer's request. When present on the package, takes precedence over the media buy-level estimate number."
+              },
+              "creative_deadline": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
+              },
+              "context": {
+                "title": "Context Object",
+                "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+                "type": "object",
+                "additionalProperties": true
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "package_id"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "planned_delivery": {
+          "title": "Planned Delivery",
+          "description": "The seller's interpreted delivery parameters. Describes what the seller will actually run -- geo, channels, flight dates, frequency caps, and budget. Present when the account has governance_agents or when the seller chooses to provide delivery transparency.",
+          "type": "object",
+          "properties": {
+            "geo": {
+              "type": "object",
+              "description": "Geographic targeting the seller will apply.",
+              "properties": {
+                "countries": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  },
+                  "description": "ISO 3166-1 alpha-2 country codes where ads will deliver."
+                },
+                "regions": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  },
+                  "description": "ISO 3166-2 subdivision codes where ads will deliver."
+                }
+              },
+              "additionalProperties": true
+            },
+            "channels": {
+              "type": "array",
+              "items": {
+                "title": "Media Channel",
+                "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                "type": "string",
+                "enum": [
+                  "display",
+                  "olv",
+                  "social",
+                  "search",
+                  "ctv",
+                  "linear_tv",
+                  "radio",
+                  "streaming_audio",
+                  "podcast",
+                  "dooh",
+                  "ooh",
+                  "print",
+                  "cinema",
+                  "email",
+                  "gaming",
+                  "retail_media",
+                  "influencer",
+                  "affiliate",
+                  "product_placement",
+                  "sponsored_intelligence"
+                ],
+                "enumDescriptions": {
+                  "display": "Digital display advertising (banners, native, rich media) across web and app",
+                  "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                  "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                  "search": "Search engine advertising and search networks",
+                  "ctv": "Connected TV and streaming on television screens",
+                  "linear_tv": "Traditional broadcast and cable television",
+                  "radio": "Traditional AM/FM radio broadcast",
+                  "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                  "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                  "dooh": "Digital out-of-home screens in public spaces",
+                  "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                  "print": "Newspapers, magazines, and other print publications",
+                  "cinema": "Movie theater advertising",
+                  "email": "Email advertising and sponsored newsletter content",
+                  "gaming": "In-game advertising across platforms",
+                  "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                  "influencer": "Creator and influencer marketing partnerships",
+                  "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                  "product_placement": "Product placement, branded content, and sponsorship integrations",
+                  "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                }
+              },
+              "description": "Channels the seller will deliver on."
+            },
+            "start_time": {
+              "type": "string",
+              "format": "date-time",
+              "description": "Actual flight start the seller will use."
+            },
+            "end_time": {
+              "type": "string",
+              "format": "date-time",
+              "description": "Actual flight end the seller will use."
+            },
+            "frequency_cap": {
+              "title": "Frequency Cap",
+              "description": "Frequency cap the seller will apply.",
+              "type": "object",
+              "properties": {
+                "suppress": {
+                  "allOf": [
+                    {
+                      "title": "Duration",
+                      "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                      "type": "object",
+                      "properties": {
+                        "interval": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "seconds",
+                            "minutes",
+                            "hours",
+                            "days",
+                            "campaign"
+                          ],
+                          "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                        }
+                      },
+                      "required": [
+                        "interval",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    }
+                  ],
+                  "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+                },
+                "suppress_minutes": {
+                  "type": "number",
+                  "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+                  "minimum": 0
+                },
+                "max_impressions": {
+                  "type": "integer",
+                  "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+                  "minimum": 1
+                },
+                "per": {
+                  "allOf": [
+                    {
+                      "title": "Reach Unit",
+                      "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                      "type": "string",
+                      "enum": [
+                        "individuals",
+                        "households",
+                        "devices",
+                        "accounts",
+                        "cookies",
+                        "custom"
+                      ],
+                      "enumDescriptions": {
+                        "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                        "households": "Unique households or TV homes.",
+                        "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                        "accounts": "Unique logged-in accounts (platform-specific identity).",
+                        "cookies": "Unique browser cookies.",
+                        "custom": "Publisher-defined reach unit. Describe in ext."
+                      }
+                    }
+                  ],
+                  "description": "Entity granularity for impression counting. Required when max_impressions is set."
+                },
+                "window": {
+                  "allOf": [
+                    {
+                      "title": "Duration",
+                      "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                      "type": "object",
+                      "properties": {
+                        "interval": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "seconds",
+                            "minutes",
+                            "hours",
+                            "days",
+                            "campaign"
+                          ],
+                          "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                        }
+                      },
+                      "required": [
+                        "interval",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    }
+                  ],
+                  "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+                }
+              },
+              "anyOf": [
+                {
+                  "required": [
+                    "suppress"
+                  ]
+                },
+                {
+                  "required": [
+                    "suppress_minutes"
+                  ]
+                },
+                {
+                  "required": [
+                    "max_impressions"
+                  ]
+                }
+              ],
+              "dependencies": {
+                "max_impressions": [
+                  "per",
+                  "window"
+                ],
+                "per": [
+                  "max_impressions"
+                ],
+                "window": [
+                  "max_impressions"
+                ]
+              },
+              "additionalProperties": true
+            },
+            "audience_summary": {
+              "type": "string",
+              "description": "Human-readable summary of the audience the seller will target."
+            },
+            "audience_targeting": {
+              "type": "array",
+              "description": "Structured audience targeting the seller will activate. Each entry is either a signal reference or a descriptive criterion. When present, governance agents MUST use this for bias/fairness validation and SHOULD ignore audience_summary for validation purposes. The audience_summary field is a human-readable rendering of this array, not an independent declaration.",
+              "items": {
+                "title": "Audience Selector",
+                "description": "Selects an audience by signal reference or natural language description. Uses 'type' as the primary discriminator (signal vs description). Signal selectors additionally use 'value_type' to determine the targeting expression format (matching signal-targeting.json variants).",
+                "oneOf": [
+                  {
+                    "type": "object",
+                    "description": "Signal-based selector for binary signals \u2014 user either matches or doesn't. The governance agent can resolve catalog signals to their full definition for structural validation.",
+                    "properties": {
+                      "type": {
+                        "type": "string",
+                        "const": "signal",
+                        "description": "Discriminator for signal-based selectors"
+                      },
+                      "signal_id": {
+                        "title": "Signal ID",
+                        "description": "The signal to target",
+                        "discriminator": {
+                          "propertyName": "source"
+                        },
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+                            "properties": {
+                              "source": {
+                                "type": "string",
+                                "const": "catalog",
+                                "description": "Discriminator indicating this signal is from a data provider's published catalog"
+                              },
+                              "data_provider_domain": {
+                                "type": "string",
+                                "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                              },
+                              "id": {
+                                "type": "string",
+                                "pattern": "^[a-zA-Z0-9_-]+$",
+                                "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+                              }
+                            },
+                            "required": [
+                              "source",
+                              "data_provider_domain",
+                              "id"
+                            ],
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+                            "properties": {
+                              "source": {
+                                "type": "string",
+                                "const": "agent",
+                                "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+                              },
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+                              },
+                              "id": {
+                                "type": "string",
+                                "pattern": "^[a-zA-Z0-9_-]+$",
+                                "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+                              }
+                            },
+                            "required": [
+                              "source",
+                              "agent_url",
+                              "id"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      "value_type": {
+                        "type": "string",
+                        "const": "binary",
+                        "description": "Discriminator for binary signals"
+                      },
+                      "value": {
+                        "type": "boolean",
+                        "description": "Whether to include (true) or exclude (false) users matching this signal"
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "signal_id",
+                      "value_type",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "type": "object",
+                    "description": "Signal-based selector for categorical signals \u2014 target users with specific values.",
+                    "properties": {
+                      "type": {
+                        "type": "string",
+                        "const": "signal",
+                        "description": "Discriminator for signal-based selectors"
+                      },
+                      "signal_id": {
+                        "title": "Signal ID",
+                        "description": "The signal to target",
+                        "discriminator": {
+                          "propertyName": "source"
+                        },
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+                            "properties": {
+                              "source": {
+                                "type": "string",
+                                "const": "catalog",
+                                "description": "Discriminator indicating this signal is from a data provider's published catalog"
+                              },
+                              "data_provider_domain": {
+                                "type": "string",
+                                "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                              },
+                              "id": {
+                                "type": "string",
+                                "pattern": "^[a-zA-Z0-9_-]+$",
+                                "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+                              }
+                            },
+                            "required": [
+                              "source",
+                              "data_provider_domain",
+                              "id"
+                            ],
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+                            "properties": {
+                              "source": {
+                                "type": "string",
+                                "const": "agent",
+                                "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+                              },
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+                              },
+                              "id": {
+                                "type": "string",
+                                "pattern": "^[a-zA-Z0-9_-]+$",
+                                "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+                              }
+                            },
+                            "required": [
+                              "source",
+                              "agent_url",
+                              "id"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      "value_type": {
+                        "type": "string",
+                        "const": "categorical",
+                        "description": "Discriminator for categorical signals"
+                      },
+                      "values": {
+                        "type": "array",
+                        "description": "Values to target. Users with any of these values will be included.",
+                        "items": {
+                          "type": "string"
+                        },
+                        "minItems": 1
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "signal_id",
+                      "value_type",
+                      "values"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "type": "object",
+                    "description": "Signal-based selector for numeric signals \u2014 target users within a value range.",
+                    "properties": {
+                      "type": {
+                        "type": "string",
+                        "const": "signal",
+                        "description": "Discriminator for signal-based selectors"
+                      },
+                      "signal_id": {
+                        "title": "Signal ID",
+                        "description": "The signal to target",
+                        "discriminator": {
+                          "propertyName": "source"
+                        },
+                        "oneOf": [
+                          {
+                            "type": "object",
+                            "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+                            "properties": {
+                              "source": {
+                                "type": "string",
+                                "const": "catalog",
+                                "description": "Discriminator indicating this signal is from a data provider's published catalog"
+                              },
+                              "data_provider_domain": {
+                                "type": "string",
+                                "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                              },
+                              "id": {
+                                "type": "string",
+                                "pattern": "^[a-zA-Z0-9_-]+$",
+                                "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+                              }
+                            },
+                            "required": [
+                              "source",
+                              "data_provider_domain",
+                              "id"
+                            ],
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+                            "properties": {
+                              "source": {
+                                "type": "string",
+                                "const": "agent",
+                                "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+                              },
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+                              },
+                              "id": {
+                                "type": "string",
+                                "pattern": "^[a-zA-Z0-9_-]+$",
+                                "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+                              }
+                            },
+                            "required": [
+                              "source",
+                              "agent_url",
+                              "id"
+                            ],
+                            "additionalProperties": true
+                          }
+                        ]
+                      },
+                      "value_type": {
+                        "type": "string",
+                        "const": "numeric",
+                        "description": "Discriminator for numeric signals"
+                      },
+                      "min_value": {
+                        "type": "number",
+                        "description": "Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided."
+                      },
+                      "max_value": {
+                        "type": "number",
+                        "description": "Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided."
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "signal_id",
+                      "value_type"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "type": "object",
+                    "description": "Description-based selector \u2014 natural language audience description. Used when the caller doesn't have a specific signal ID (e.g., buyer setting plan-level goals, or seller using proprietary segments without public catalog entries).",
+                    "properties": {
+                      "type": {
+                        "type": "string",
+                        "const": "description",
+                        "description": "Discriminator for description-based selectors"
+                      },
+                      "description": {
+                        "type": "string",
+                        "description": "Natural language description of the audience (e.g., 'likely EV buyers', 'high net worth individuals', 'vulnerable communities')",
+                        "minLength": 1,
+                        "maxLength": 2000
+                      },
+                      "category": {
+                        "type": "string",
+                        "description": "Optional grouping hint for the governance agent (e.g., 'demographic', 'behavioral', 'contextual', 'financial')"
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "description"
+                    ],
+                    "additionalProperties": true
+                  }
+                ]
+              },
+              "minItems": 1
+            },
+            "total_budget": {
+              "type": "number",
+              "description": "Total budget the seller will deliver against.",
+              "minimum": 0
+            },
+            "currency": {
+              "type": "string",
+              "description": "ISO 4217 currency code for the budget.",
+              "pattern": "^[A-Z]{3}$"
+            },
+            "enforced_policies": {
+              "type": "array",
+              "description": "Registry policy IDs the seller will enforce for this delivery.",
+              "items": {
+                "type": "string"
+              }
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "media_buy_id",
+        "packages"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "CreateMediaBuyError",
+      "description": "Error response - operation failed, no media buy created",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Array of errors explaining why the operation failed",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "media_buy_id"
+            ]
+          },
+          {
+            "required": [
+              "packages"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.371Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/get-media-buy-delivery-request.json b/schemas/cache/bundled/media-buy/get-media-buy-delivery-request.json
new file mode 100644
index 000000000..01d74b614
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/get-media-buy-delivery-request.json
@@ -0,0 +1,568 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buy Delivery Request",
+  "description": "Request parameters for retrieving comprehensive delivery metrics",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Filter delivery data to a specific account. When omitted, returns data across all accessible accounts.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "media_buy_ids": {
+      "type": "array",
+      "description": "Array of media buy IDs to get delivery data for",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "status_filter": {
+      "oneOf": [
+        {
+          "title": "Media Buy Status",
+          "description": "Status of a media buy.",
+          "type": "string",
+          "enum": [
+            "pending_creatives",
+            "pending_start",
+            "active",
+            "paused",
+            "completed",
+            "rejected",
+            "canceled"
+          ],
+          "enumDescriptions": {
+            "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+            "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
+            "active": "Media buy is currently running",
+            "paused": "Media buy is temporarily paused",
+            "completed": "Media buy has finished running",
+            "rejected": "Media buy was declined by the seller after creation",
+            "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+          }
+        },
+        {
+          "type": "array",
+          "items": {
+            "title": "Media Buy Status",
+            "description": "Status of a media buy.",
+            "type": "string",
+            "enum": [
+              "pending_creatives",
+              "pending_start",
+              "active",
+              "paused",
+              "completed",
+              "rejected",
+              "canceled"
+            ],
+            "enumDescriptions": {
+              "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+              "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
+              "active": "Media buy is currently running",
+              "paused": "Media buy is temporarily paused",
+              "completed": "Media buy has finished running",
+              "rejected": "Media buy was declined by the seller after creation",
+              "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+            }
+          },
+          "minItems": 1
+        }
+      ],
+      "description": "Filter by status. Can be a single status or array of statuses"
+    },
+    "start_date": {
+      "type": "string",
+      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+      "description": "Start date for reporting period (YYYY-MM-DD). When omitted along with end_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'."
+    },
+    "end_date": {
+      "type": "string",
+      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+      "description": "End date for reporting period (YYYY-MM-DD). When omitted along with start_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'."
+    },
+    "include_package_daily_breakdown": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, include daily_breakdown arrays within each package in by_package. Useful for per-package pacing analysis and line-item monitoring. Omit or set false to reduce response size \u2014 package daily data can be large for multi-package buys over long flights."
+    },
+    "attribution_window": {
+      "type": "object",
+      "description": "Attribution window to apply for conversion metrics. When provided, the seller returns conversion data using the requested lookback windows instead of their platform default. The seller echoes the applied window in the response. Sellers that do not support configurable windows ignore this field and return their default. Check get_adcp_capabilities conversion_tracking.attribution_windows for available options.",
+      "properties": {
+        "post_click": {
+          "allOf": [
+            {
+              "title": "Duration",
+              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+              "type": "object",
+              "properties": {
+                "interval": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                },
+                "unit": {
+                  "type": "string",
+                  "enum": [
+                    "seconds",
+                    "minutes",
+                    "hours",
+                    "days",
+                    "campaign"
+                  ],
+                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                }
+              },
+              "required": [
+                "interval",
+                "unit"
+              ],
+              "additionalProperties": false
+            }
+          ],
+          "description": "Post-click attribution window to apply."
+        },
+        "post_view": {
+          "allOf": [
+            {
+              "title": "Duration",
+              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+              "type": "object",
+              "properties": {
+                "interval": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                },
+                "unit": {
+                  "type": "string",
+                  "enum": [
+                    "seconds",
+                    "minutes",
+                    "hours",
+                    "days",
+                    "campaign"
+                  ],
+                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                }
+              },
+              "required": [
+                "interval",
+                "unit"
+              ],
+              "additionalProperties": false
+            }
+          ],
+          "description": "Post-view attribution window to apply."
+        },
+        "model": {
+          "title": "Attribution Model",
+          "description": "Attribution model to use. When omitted, the seller applies their default model.",
+          "type": "string",
+          "enum": [
+            "last_touch",
+            "first_touch",
+            "linear",
+            "time_decay",
+            "data_driven"
+          ]
+        }
+      },
+      "additionalProperties": true
+    },
+    "reporting_dimensions": {
+      "type": "object",
+      "description": "Request dimensional breakdowns in delivery reporting. Each key enables a specific breakdown dimension within by_package \u2014 include as an empty object (e.g., \"device_type\": {}) to activate with defaults. Omit entirely for no breakdowns (backward compatible). Unsupported dimensions are silently omitted from the response. Note: keyword, catalog_item, and creative breakdowns are returned automatically when the seller supports them and are not controlled by this object.",
+      "properties": {
+        "geo": {
+          "type": "object",
+          "description": "Request geographic breakdown. Check reporting_capabilities.supports_geo_breakdown for available levels and systems.",
+          "properties": {
+            "geo_level": {
+              "title": "Geographic Targeting Level",
+              "description": "Geographic granularity level for the breakdown",
+              "type": "string",
+              "enum": [
+                "country",
+                "region",
+                "metro",
+                "postal_area"
+              ]
+            },
+            "system": {
+              "oneOf": [
+                {
+                  "title": "Metro Area System",
+                  "description": "Metro area classification systems for geographic targeting",
+                  "type": "string",
+                  "enum": [
+                    "nielsen_dma",
+                    "uk_itl1",
+                    "uk_itl2",
+                    "eurostat_nuts2",
+                    "custom"
+                  ]
+                },
+                {
+                  "title": "Postal Code System",
+                  "description": "Postal code systems for geographic targeting. System names encode country and precision level.",
+                  "type": "string",
+                  "enum": [
+                    "us_zip",
+                    "us_zip_plus_four",
+                    "gb_outward",
+                    "gb_full",
+                    "ca_fsa",
+                    "ca_full",
+                    "de_plz",
+                    "fr_code_postal",
+                    "au_postcode",
+                    "ch_plz",
+                    "at_plz"
+                  ]
+                }
+              ],
+              "description": "Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Required when geo_level is 'metro' or 'postal_area'."
+            },
+            "limit": {
+              "type": "integer",
+              "minimum": 1,
+              "default": 25,
+              "description": "Maximum number of geo entries to return. Defaults to 25. When truncated, by_geo_truncated is true in the response."
+            },
+            "sort_by": {
+              "title": "Sort Metric",
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "type": "string",
+              "enum": [
+                "impressions",
+                "spend",
+                "clicks",
+                "ctr",
+                "views",
+                "completed_views",
+                "completion_rate",
+                "conversions",
+                "conversion_value",
+                "roas",
+                "cost_per_acquisition",
+                "new_to_brand_rate",
+                "leads",
+                "grps",
+                "reach",
+                "frequency",
+                "engagements",
+                "follows",
+                "saves",
+                "profile_visits",
+                "engagement_rate",
+                "cost_per_click"
+              ],
+              "default": "spend"
+            }
+          },
+          "required": [
+            "geo_level"
+          ],
+          "additionalProperties": true
+        },
+        "device_type": {
+          "type": "object",
+          "description": "Request device type breakdown.",
+          "properties": {
+            "limit": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Maximum number of entries to return. When omitted, all entries are returned (the enum is small and bounded)."
+            },
+            "sort_by": {
+              "title": "Sort Metric",
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "type": "string",
+              "enum": [
+                "impressions",
+                "spend",
+                "clicks",
+                "ctr",
+                "views",
+                "completed_views",
+                "completion_rate",
+                "conversions",
+                "conversion_value",
+                "roas",
+                "cost_per_acquisition",
+                "new_to_brand_rate",
+                "leads",
+                "grps",
+                "reach",
+                "frequency",
+                "engagements",
+                "follows",
+                "saves",
+                "profile_visits",
+                "engagement_rate",
+                "cost_per_click"
+              ],
+              "default": "spend"
+            }
+          },
+          "additionalProperties": true
+        },
+        "device_platform": {
+          "type": "object",
+          "description": "Request device platform breakdown.",
+          "properties": {
+            "limit": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Maximum number of entries to return. When omitted, all entries are returned (the enum is small and bounded)."
+            },
+            "sort_by": {
+              "title": "Sort Metric",
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "type": "string",
+              "enum": [
+                "impressions",
+                "spend",
+                "clicks",
+                "ctr",
+                "views",
+                "completed_views",
+                "completion_rate",
+                "conversions",
+                "conversion_value",
+                "roas",
+                "cost_per_acquisition",
+                "new_to_brand_rate",
+                "leads",
+                "grps",
+                "reach",
+                "frequency",
+                "engagements",
+                "follows",
+                "saves",
+                "profile_visits",
+                "engagement_rate",
+                "cost_per_click"
+              ],
+              "default": "spend"
+            }
+          },
+          "additionalProperties": true
+        },
+        "audience": {
+          "type": "object",
+          "description": "Request audience segment breakdown.",
+          "properties": {
+            "limit": {
+              "type": "integer",
+              "minimum": 1,
+              "default": 25,
+              "description": "Maximum number of entries to return. Defaults to 25."
+            },
+            "sort_by": {
+              "title": "Sort Metric",
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "type": "string",
+              "enum": [
+                "impressions",
+                "spend",
+                "clicks",
+                "ctr",
+                "views",
+                "completed_views",
+                "completion_rate",
+                "conversions",
+                "conversion_value",
+                "roas",
+                "cost_per_acquisition",
+                "new_to_brand_rate",
+                "leads",
+                "grps",
+                "reach",
+                "frequency",
+                "engagements",
+                "follows",
+                "saves",
+                "profile_visits",
+                "engagement_rate",
+                "cost_per_click"
+              ],
+              "default": "spend"
+            }
+          },
+          "additionalProperties": true
+        },
+        "placement": {
+          "type": "object",
+          "description": "Request placement breakdown.",
+          "properties": {
+            "limit": {
+              "type": "integer",
+              "minimum": 1,
+              "default": 25,
+              "description": "Maximum number of entries to return. Defaults to 25."
+            },
+            "sort_by": {
+              "title": "Sort Metric",
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "type": "string",
+              "enum": [
+                "impressions",
+                "spend",
+                "clicks",
+                "ctr",
+                "views",
+                "completed_views",
+                "completion_rate",
+                "conversions",
+                "conversion_value",
+                "roas",
+                "cost_per_acquisition",
+                "new_to_brand_rate",
+                "leads",
+                "grps",
+                "reach",
+                "frequency",
+                "engagements",
+                "follows",
+                "saves",
+                "profile_visits",
+                "engagement_rate",
+                "cost_per_click"
+              ],
+              "default": "spend"
+            }
+          },
+          "additionalProperties": true
+        }
+      },
+      "additionalProperties": true
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.374Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/get-media-buy-delivery-response.json b/schemas/cache/bundled/media-buy/get-media-buy-delivery-response.json
new file mode 100644
index 000000000..1150e91a5
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/get-media-buy-delivery-response.json
@@ -0,0 +1,5296 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buy Delivery Response",
+  "description": "Response payload for get_media_buy_delivery task",
+  "type": "object",
+  "properties": {
+    "notification_type": {
+      "type": "string",
+      "enum": [
+        "scheduled",
+        "final",
+        "delayed",
+        "adjusted",
+        "window_update"
+      ],
+      "description": "Type of webhook notification (only present in webhook deliveries): scheduled = regular periodic update, final = campaign completed, delayed = data not yet available, adjusted = resending period with corrected data (same window), window_update = resending period with a wider measurement window (e.g., C3 superseding live, C7 superseding C3)"
+    },
+    "partial_data": {
+      "type": "boolean",
+      "description": "Indicates if any media buys in this webhook have missing/delayed data (only present in webhook deliveries)"
+    },
+    "unavailable_count": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of media buys with reporting_delayed or failed status (only present in webhook deliveries when partial_data is true)"
+    },
+    "sequence_number": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Sequential notification number (only present in webhook deliveries, starts at 1)"
+    },
+    "next_expected_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp for next expected notification (only present in webhook deliveries when notification_type is not 'final')"
+    },
+    "reporting_period": {
+      "type": "object",
+      "description": "Date range for the report. All periods use UTC timezone.",
+      "properties": {
+        "start": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 start timestamp in UTC (e.g., 2024-02-05T00:00:00Z)"
+        },
+        "end": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 end timestamp in UTC (e.g., 2024-02-05T23:59:59Z)"
+        }
+      },
+      "required": [
+        "start",
+        "end"
+      ],
+      "additionalProperties": true
+    },
+    "currency": {
+      "type": "string",
+      "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$"
+    },
+    "attribution_window": {
+      "title": "Attribution Window",
+      "description": "Attribution methodology and lookback windows used for conversion metrics in this response. All media buys from a single seller share the same attribution methodology. Enables cross-platform comparison (e.g., Amazon 14-day click vs. Criteo 30-day click).",
+      "type": "object",
+      "properties": {
+        "post_click": {
+          "allOf": [
+            {
+              "title": "Duration",
+              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+              "type": "object",
+              "properties": {
+                "interval": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                },
+                "unit": {
+                  "type": "string",
+                  "enum": [
+                    "seconds",
+                    "minutes",
+                    "hours",
+                    "days",
+                    "campaign"
+                  ],
+                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                }
+              },
+              "required": [
+                "interval",
+                "unit"
+              ],
+              "additionalProperties": false
+            }
+          ],
+          "description": "Post-click attribution window. Conversions occurring within this duration after a click are attributed to the ad."
+        },
+        "post_view": {
+          "allOf": [
+            {
+              "title": "Duration",
+              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+              "type": "object",
+              "properties": {
+                "interval": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                },
+                "unit": {
+                  "type": "string",
+                  "enum": [
+                    "seconds",
+                    "minutes",
+                    "hours",
+                    "days",
+                    "campaign"
+                  ],
+                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                }
+              },
+              "required": [
+                "interval",
+                "unit"
+              ],
+              "additionalProperties": false
+            }
+          ],
+          "description": "Post-view attribution window. Conversions occurring within this duration after an ad impression (without click) are attributed to the ad."
+        },
+        "model": {
+          "title": "Attribution Model",
+          "description": "Attribution model used to assign credit when multiple touchpoints exist",
+          "type": "string",
+          "enum": [
+            "last_touch",
+            "first_touch",
+            "linear",
+            "time_decay",
+            "data_driven"
+          ]
+        }
+      },
+      "required": [
+        "model"
+      ],
+      "additionalProperties": true
+    },
+    "aggregated_totals": {
+      "type": "object",
+      "description": "Combined metrics across all returned media buys. Only included in API responses (get_media_buy_delivery), not in webhook notifications.",
+      "properties": {
+        "impressions": {
+          "type": "number",
+          "description": "Total impressions delivered across all media buys",
+          "minimum": 0
+        },
+        "spend": {
+          "type": "number",
+          "description": "Total amount spent across all media buys",
+          "minimum": 0
+        },
+        "clicks": {
+          "type": "number",
+          "description": "Total clicks across all media buys (if applicable)",
+          "minimum": 0
+        },
+        "completed_views": {
+          "type": "number",
+          "description": "Total audio/video completions across all media buys (if applicable)",
+          "minimum": 0
+        },
+        "views": {
+          "type": "number",
+          "description": "Total views across all media buys (if applicable)",
+          "minimum": 0
+        },
+        "conversions": {
+          "type": "number",
+          "description": "Total conversions across all media buys (if applicable)",
+          "minimum": 0
+        },
+        "conversion_value": {
+          "type": "number",
+          "description": "Total conversion value across all media buys (if applicable)",
+          "minimum": 0
+        },
+        "roas": {
+          "type": "number",
+          "description": "Aggregate return on ad spend across all media buys (total conversion_value / total spend)",
+          "minimum": 0
+        },
+        "new_to_brand_rate": {
+          "type": "number",
+          "description": "Fraction of total conversions across all media buys from first-time brand buyers (weighted by conversion volume, not a simple average of per-buy rates)",
+          "minimum": 0,
+          "maximum": 1
+        },
+        "cost_per_acquisition": {
+          "type": "number",
+          "description": "Aggregate cost per conversion across all media buys (total spend / total conversions)",
+          "minimum": 0
+        },
+        "completion_rate": {
+          "type": "number",
+          "description": "Aggregate completion rate across all media buys (weighted by impressions, not a simple average of per-buy rates)",
+          "minimum": 0,
+          "maximum": 1
+        },
+        "reach": {
+          "type": "number",
+          "description": "Deduplicated reach across all media buys (if the seller can deduplicate across buys; otherwise sum of per-buy reach). Only present when all media buys share the same reach_unit. Omitted when reach units are heterogeneous \u2014 use per-buy reach values instead.",
+          "minimum": 0
+        },
+        "reach_unit": {
+          "allOf": [
+            {
+              "title": "Reach Unit",
+              "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+              "type": "string",
+              "enum": [
+                "individuals",
+                "households",
+                "devices",
+                "accounts",
+                "cookies",
+                "custom"
+              ],
+              "enumDescriptions": {
+                "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                "households": "Unique households or TV homes.",
+                "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                "accounts": "Unique logged-in accounts (platform-specific identity).",
+                "cookies": "Unique browser cookies.",
+                "custom": "Publisher-defined reach unit. Describe in ext."
+              }
+            }
+          ],
+          "description": "Unit of measurement for reach. Only present when all aggregated media buys use the same reach_unit."
+        },
+        "frequency": {
+          "type": "number",
+          "description": "Average frequency per reach unit across all media buys (impressions / reach when cross-buy deduplication is available). Only present when reach is present.",
+          "minimum": 0
+        },
+        "media_buy_count": {
+          "type": "integer",
+          "description": "Number of media buys included in the response",
+          "minimum": 0
+        }
+      },
+      "required": [
+        "impressions",
+        "spend",
+        "media_buy_count"
+      ],
+      "additionalProperties": true
+    },
+    "media_buy_deliveries": {
+      "type": "array",
+      "description": "Array of delivery data for media buys. When used in webhook notifications, may contain multiple media buys aggregated by publisher. When used in get_media_buy_delivery API responses, typically contains requested media buys.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "media_buy_id": {
+            "type": "string",
+            "description": "Seller's media buy identifier"
+          },
+          "status": {
+            "type": "string",
+            "description": "Current media buy status. Lifecycle states use the same taxonomy as media-buy-status (`pending_creatives`, `pending_start`, `active`, `paused`, `completed`, `rejected`, `canceled`). In webhook context, reporting_delayed indicates data temporarily unavailable. `pending` is accepted as a legacy alias for pending_start.",
+            "enum": [
+              "pending_creatives",
+              "pending_start",
+              "pending",
+              "active",
+              "paused",
+              "completed",
+              "rejected",
+              "canceled",
+              "failed",
+              "reporting_delayed"
+            ]
+          },
+          "expected_availability": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When delayed data is expected to be available (only present when status is reporting_delayed)"
+          },
+          "is_adjusted": {
+            "type": "boolean",
+            "description": "Indicates this delivery contains updated data for a previously reported period. Buyer should replace previous period data with these totals."
+          },
+          "pricing_model": {
+            "title": "Pricing Model",
+            "description": "Pricing model used for this media buy",
+            "type": "string",
+            "enum": [
+              "cpm",
+              "vcpm",
+              "cpc",
+              "cpcv",
+              "cpv",
+              "cpp",
+              "cpa",
+              "flat_rate",
+              "time"
+            ],
+            "enumDescriptions": {
+              "cpm": "Cost Per Mille - cost per 1,000 impressions",
+              "vcpm": "Viewable Cost Per Mille - cost per 1,000 viewable impressions (MRC standard)",
+              "cpc": "Cost Per Click - cost per click on the ad",
+              "cpcv": "Cost Per Completed View - cost per 100% video/audio completion",
+              "cpv": "Cost Per View - cost per view at publisher-defined threshold (e.g., 50% completion)",
+              "cpp": "Cost Per Point - cost per Gross Rating Point or Target Rating Point (TV/audio)",
+              "cpa": "Cost Per Acquisition - cost per conversion event (purchase, lead, signup, etc.)",
+              "flat_rate": "Flat Rate - fixed cost regardless of delivery volume (sponsorships, takeovers)",
+              "time": "Time - cost per time unit (hour, day, week, or month) that scales with campaign duration"
+            }
+          },
+          "totals": {
+            "allOf": [
+              {
+                "title": "Delivery Metrics",
+                "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                "type": "object",
+                "properties": {
+                  "impressions": {
+                    "type": "number",
+                    "description": "Impressions delivered",
+                    "minimum": 0
+                  },
+                  "spend": {
+                    "type": "number",
+                    "description": "Amount spent",
+                    "minimum": 0
+                  },
+                  "clicks": {
+                    "type": "number",
+                    "description": "Total clicks",
+                    "minimum": 0
+                  },
+                  "ctr": {
+                    "type": "number",
+                    "description": "Click-through rate (clicks/impressions)",
+                    "minimum": 0,
+                    "maximum": 1
+                  },
+                  "views": {
+                    "type": "number",
+                    "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                    "minimum": 0
+                  },
+                  "completed_views": {
+                    "type": "number",
+                    "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                    "minimum": 0
+                  },
+                  "completion_rate": {
+                    "type": "number",
+                    "description": "Completion rate (completed_views/impressions)",
+                    "minimum": 0,
+                    "maximum": 1
+                  },
+                  "conversions": {
+                    "type": "number",
+                    "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                    "minimum": 0
+                  },
+                  "conversion_value": {
+                    "type": "number",
+                    "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                    "minimum": 0
+                  },
+                  "roas": {
+                    "type": "number",
+                    "description": "Return on ad spend (conversion_value / spend)",
+                    "minimum": 0
+                  },
+                  "cost_per_acquisition": {
+                    "type": "number",
+                    "description": "Cost per conversion (spend / conversions)",
+                    "minimum": 0
+                  },
+                  "new_to_brand_rate": {
+                    "type": "number",
+                    "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                    "minimum": 0,
+                    "maximum": 1
+                  },
+                  "leads": {
+                    "type": "number",
+                    "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                    "minimum": 0
+                  },
+                  "by_event_type": {
+                    "type": "array",
+                    "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "event_type": {
+                          "title": "Event Type",
+                          "description": "The event type",
+                          "type": "string",
+                          "enum": [
+                            "page_view",
+                            "view_content",
+                            "select_content",
+                            "select_item",
+                            "search",
+                            "share",
+                            "add_to_cart",
+                            "remove_from_cart",
+                            "viewed_cart",
+                            "add_to_wishlist",
+                            "initiate_checkout",
+                            "add_payment_info",
+                            "purchase",
+                            "refund",
+                            "lead",
+                            "qualify_lead",
+                            "close_convert_lead",
+                            "disqualify_lead",
+                            "complete_registration",
+                            "subscribe",
+                            "start_trial",
+                            "app_install",
+                            "app_launch",
+                            "contact",
+                            "schedule",
+                            "donate",
+                            "submit_application",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "page_view": "User viewed a page",
+                            "view_content": "User viewed specific content (product, article, etc.)",
+                            "select_content": "User selected or clicked on content (article, video, etc.)",
+                            "select_item": "User selected a specific product or item from a list",
+                            "search": "User performed a search",
+                            "share": "User shared content via social or messaging",
+                            "add_to_cart": "User added an item to cart",
+                            "remove_from_cart": "User removed an item from cart",
+                            "viewed_cart": "User viewed their shopping cart",
+                            "add_to_wishlist": "User added an item to a wishlist",
+                            "initiate_checkout": "User started checkout process",
+                            "add_payment_info": "User added payment information",
+                            "purchase": "User completed a purchase",
+                            "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                            "lead": "User expressed interest (form submission, signup, etc.)",
+                            "qualify_lead": "Lead qualified by sales or scoring criteria",
+                            "close_convert_lead": "Lead converted to a customer or closed deal",
+                            "disqualify_lead": "Lead disqualified or marked as not viable",
+                            "complete_registration": "User completed account registration",
+                            "subscribe": "User subscribed to a service or newsletter",
+                            "start_trial": "User started a free trial",
+                            "app_install": "User installed an application",
+                            "app_launch": "User launched an application",
+                            "contact": "User initiated contact (call, message, etc.)",
+                            "schedule": "User scheduled an appointment or event",
+                            "donate": "User made a donation",
+                            "submit_application": "User submitted an application (loan, job, etc.)",
+                            "custom": "Custom event type (specify in custom_event_name)"
+                          }
+                        },
+                        "event_source_id": {
+                          "type": "string",
+                          "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                        },
+                        "count": {
+                          "type": "number",
+                          "description": "Number of events of this type",
+                          "minimum": 0
+                        },
+                        "value": {
+                          "type": "number",
+                          "description": "Total monetary value of events of this type",
+                          "minimum": 0
+                        }
+                      },
+                      "required": [
+                        "event_type",
+                        "count"
+                      ],
+                      "additionalProperties": true
+                    }
+                  },
+                  "grps": {
+                    "type": "number",
+                    "description": "Gross Rating Points delivered (for CPP)",
+                    "minimum": 0
+                  },
+                  "reach": {
+                    "type": "number",
+                    "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                    "minimum": 0
+                  },
+                  "reach_unit": {
+                    "allOf": [
+                      {
+                        "title": "Reach Unit",
+                        "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                        "type": "string",
+                        "enum": [
+                          "individuals",
+                          "households",
+                          "devices",
+                          "accounts",
+                          "cookies",
+                          "custom"
+                        ],
+                        "enumDescriptions": {
+                          "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                          "households": "Unique households or TV homes.",
+                          "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                          "accounts": "Unique logged-in accounts (platform-specific identity).",
+                          "cookies": "Unique browser cookies.",
+                          "custom": "Publisher-defined reach unit. Describe in ext."
+                        }
+                      }
+                    ],
+                    "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                  },
+                  "frequency": {
+                    "type": "number",
+                    "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                    "minimum": 0
+                  },
+                  "quartile_data": {
+                    "type": "object",
+                    "description": "Audio/video quartile completion data",
+                    "properties": {
+                      "q1_views": {
+                        "type": "number",
+                        "description": "25% completion views",
+                        "minimum": 0
+                      },
+                      "q2_views": {
+                        "type": "number",
+                        "description": "50% completion views",
+                        "minimum": 0
+                      },
+                      "q3_views": {
+                        "type": "number",
+                        "description": "75% completion views",
+                        "minimum": 0
+                      },
+                      "q4_views": {
+                        "type": "number",
+                        "description": "100% completion views",
+                        "minimum": 0
+                      }
+                    }
+                  },
+                  "dooh_metrics": {
+                    "type": "object",
+                    "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                    "properties": {
+                      "loop_plays": {
+                        "type": "integer",
+                        "description": "Number of times ad played in rotation",
+                        "minimum": 0
+                      },
+                      "screens_used": {
+                        "type": "integer",
+                        "description": "Number of unique screens displaying the ad",
+                        "minimum": 0
+                      },
+                      "screen_time_seconds": {
+                        "type": "integer",
+                        "description": "Total display time in seconds",
+                        "minimum": 0
+                      },
+                      "sov_achieved": {
+                        "type": "number",
+                        "description": "Actual share of voice delivered (0.0 to 1.0)",
+                        "minimum": 0,
+                        "maximum": 1
+                      },
+                      "calculation_notes": {
+                        "type": "string",
+                        "description": "Explanation of how DOOH impressions were calculated"
+                      },
+                      "venue_breakdown": {
+                        "type": "array",
+                        "description": "Per-venue performance breakdown",
+                        "items": {
+                          "type": "object",
+                          "properties": {
+                            "venue_id": {
+                              "type": "string",
+                              "description": "Venue identifier"
+                            },
+                            "venue_name": {
+                              "type": "string",
+                              "description": "Human-readable venue name"
+                            },
+                            "venue_type": {
+                              "type": "string",
+                              "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                            },
+                            "impressions": {
+                              "type": "integer",
+                              "description": "Impressions delivered at this venue",
+                              "minimum": 0
+                            },
+                            "loop_plays": {
+                              "type": "integer",
+                              "description": "Loop plays at this venue",
+                              "minimum": 0
+                            },
+                            "screens_used": {
+                              "type": "integer",
+                              "description": "Number of screens used at this venue",
+                              "minimum": 0
+                            }
+                          },
+                          "required": [
+                            "venue_id",
+                            "impressions"
+                          ],
+                          "additionalProperties": true
+                        }
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "viewability": {
+                    "type": "object",
+                    "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                    "properties": {
+                      "measurable_impressions": {
+                        "type": "number",
+                        "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                        "minimum": 0
+                      },
+                      "viewable_impressions": {
+                        "type": "number",
+                        "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                        "minimum": 0
+                      },
+                      "viewable_rate": {
+                        "type": "number",
+                        "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                        "minimum": 0,
+                        "maximum": 1
+                      },
+                      "standard": {
+                        "title": "Viewability Standard",
+                        "description": "Viewability measurement standard applied to these metrics.",
+                        "type": "string",
+                        "enum": [
+                          "mrc",
+                          "groupm"
+                        ],
+                        "enumDescriptions": {
+                          "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                          "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                        }
+                      }
+                    },
+                    "additionalProperties": true
+                  },
+                  "engagements": {
+                    "type": "number",
+                    "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                    "minimum": 0
+                  },
+                  "follows": {
+                    "type": "number",
+                    "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                    "minimum": 0
+                  },
+                  "saves": {
+                    "type": "number",
+                    "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                    "minimum": 0
+                  },
+                  "profile_visits": {
+                    "type": "number",
+                    "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                    "minimum": 0
+                  },
+                  "engagement_rate": {
+                    "type": "number",
+                    "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                    "minimum": 0,
+                    "maximum": 1
+                  },
+                  "cost_per_click": {
+                    "type": "number",
+                    "description": "Cost per click (spend / clicks)",
+                    "minimum": 0
+                  },
+                  "by_action_source": {
+                    "type": "array",
+                    "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "action_source": {
+                          "title": "Action Source",
+                          "description": "Where the conversion occurred",
+                          "type": "string",
+                          "enum": [
+                            "website",
+                            "app",
+                            "offline",
+                            "phone_call",
+                            "chat",
+                            "email",
+                            "in_store",
+                            "system_generated",
+                            "other"
+                          ],
+                          "enumDescriptions": {
+                            "website": "Event occurred on a website",
+                            "app": "Event occurred in a mobile or desktop app",
+                            "offline": "Event occurred offline (imported data)",
+                            "phone_call": "Event originated from a phone call",
+                            "chat": "Event originated from a chat conversation",
+                            "email": "Event originated from an email interaction",
+                            "in_store": "Event occurred at a physical retail location",
+                            "system_generated": "Event generated by an automated system",
+                            "other": "Other source (specify in ext)"
+                          }
+                        },
+                        "event_source_id": {
+                          "type": "string",
+                          "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                        },
+                        "count": {
+                          "type": "number",
+                          "description": "Number of conversions from this action source",
+                          "minimum": 0
+                        },
+                        "value": {
+                          "type": "number",
+                          "description": "Total monetary value of conversions from this action source",
+                          "minimum": 0
+                        }
+                      },
+                      "required": [
+                        "action_source",
+                        "count"
+                      ],
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                "dependencies": {
+                  "reach": [
+                    "reach_unit"
+                  ]
+                },
+                "additionalProperties": true
+              },
+              {
+                "type": "object",
+                "description": "Aggregate metrics for this media buy across all packages",
+                "properties": {
+                  "effective_rate": {
+                    "type": "number",
+                    "description": "Effective rate paid per unit based on pricing_model (e.g., actual CPM for 'cpm', actual cost per completed view for 'cpcv', actual cost per point for 'cpp')",
+                    "minimum": 0
+                  }
+                },
+                "required": [
+                  "spend"
+                ]
+              }
+            ]
+          },
+          "by_package": {
+            "type": "array",
+            "description": "Metrics broken down by package",
+            "items": {
+              "allOf": [
+                {
+                  "title": "Delivery Metrics",
+                  "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                  "type": "object",
+                  "properties": {
+                    "impressions": {
+                      "type": "number",
+                      "description": "Impressions delivered",
+                      "minimum": 0
+                    },
+                    "spend": {
+                      "type": "number",
+                      "description": "Amount spent",
+                      "minimum": 0
+                    },
+                    "clicks": {
+                      "type": "number",
+                      "description": "Total clicks",
+                      "minimum": 0
+                    },
+                    "ctr": {
+                      "type": "number",
+                      "description": "Click-through rate (clicks/impressions)",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "views": {
+                      "type": "number",
+                      "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                      "minimum": 0
+                    },
+                    "completed_views": {
+                      "type": "number",
+                      "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                      "minimum": 0
+                    },
+                    "completion_rate": {
+                      "type": "number",
+                      "description": "Completion rate (completed_views/impressions)",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "conversions": {
+                      "type": "number",
+                      "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                      "minimum": 0
+                    },
+                    "conversion_value": {
+                      "type": "number",
+                      "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                      "minimum": 0
+                    },
+                    "roas": {
+                      "type": "number",
+                      "description": "Return on ad spend (conversion_value / spend)",
+                      "minimum": 0
+                    },
+                    "cost_per_acquisition": {
+                      "type": "number",
+                      "description": "Cost per conversion (spend / conversions)",
+                      "minimum": 0
+                    },
+                    "new_to_brand_rate": {
+                      "type": "number",
+                      "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "leads": {
+                      "type": "number",
+                      "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                      "minimum": 0
+                    },
+                    "by_event_type": {
+                      "type": "array",
+                      "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "event_type": {
+                            "title": "Event Type",
+                            "description": "The event type",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "event_source_id": {
+                            "type": "string",
+                            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                          },
+                          "count": {
+                            "type": "number",
+                            "description": "Number of events of this type",
+                            "minimum": 0
+                          },
+                          "value": {
+                            "type": "number",
+                            "description": "Total monetary value of events of this type",
+                            "minimum": 0
+                          }
+                        },
+                        "required": [
+                          "event_type",
+                          "count"
+                        ],
+                        "additionalProperties": true
+                      }
+                    },
+                    "grps": {
+                      "type": "number",
+                      "description": "Gross Rating Points delivered (for CPP)",
+                      "minimum": 0
+                    },
+                    "reach": {
+                      "type": "number",
+                      "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                      "minimum": 0
+                    },
+                    "reach_unit": {
+                      "allOf": [
+                        {
+                          "title": "Reach Unit",
+                          "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                          "type": "string",
+                          "enum": [
+                            "individuals",
+                            "households",
+                            "devices",
+                            "accounts",
+                            "cookies",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                            "households": "Unique households or TV homes.",
+                            "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                            "accounts": "Unique logged-in accounts (platform-specific identity).",
+                            "cookies": "Unique browser cookies.",
+                            "custom": "Publisher-defined reach unit. Describe in ext."
+                          }
+                        }
+                      ],
+                      "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                    },
+                    "frequency": {
+                      "type": "number",
+                      "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                      "minimum": 0
+                    },
+                    "quartile_data": {
+                      "type": "object",
+                      "description": "Audio/video quartile completion data",
+                      "properties": {
+                        "q1_views": {
+                          "type": "number",
+                          "description": "25% completion views",
+                          "minimum": 0
+                        },
+                        "q2_views": {
+                          "type": "number",
+                          "description": "50% completion views",
+                          "minimum": 0
+                        },
+                        "q3_views": {
+                          "type": "number",
+                          "description": "75% completion views",
+                          "minimum": 0
+                        },
+                        "q4_views": {
+                          "type": "number",
+                          "description": "100% completion views",
+                          "minimum": 0
+                        }
+                      }
+                    },
+                    "dooh_metrics": {
+                      "type": "object",
+                      "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                      "properties": {
+                        "loop_plays": {
+                          "type": "integer",
+                          "description": "Number of times ad played in rotation",
+                          "minimum": 0
+                        },
+                        "screens_used": {
+                          "type": "integer",
+                          "description": "Number of unique screens displaying the ad",
+                          "minimum": 0
+                        },
+                        "screen_time_seconds": {
+                          "type": "integer",
+                          "description": "Total display time in seconds",
+                          "minimum": 0
+                        },
+                        "sov_achieved": {
+                          "type": "number",
+                          "description": "Actual share of voice delivered (0.0 to 1.0)",
+                          "minimum": 0,
+                          "maximum": 1
+                        },
+                        "calculation_notes": {
+                          "type": "string",
+                          "description": "Explanation of how DOOH impressions were calculated"
+                        },
+                        "venue_breakdown": {
+                          "type": "array",
+                          "description": "Per-venue performance breakdown",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "venue_id": {
+                                "type": "string",
+                                "description": "Venue identifier"
+                              },
+                              "venue_name": {
+                                "type": "string",
+                                "description": "Human-readable venue name"
+                              },
+                              "venue_type": {
+                                "type": "string",
+                                "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                              },
+                              "impressions": {
+                                "type": "integer",
+                                "description": "Impressions delivered at this venue",
+                                "minimum": 0
+                              },
+                              "loop_plays": {
+                                "type": "integer",
+                                "description": "Loop plays at this venue",
+                                "minimum": 0
+                              },
+                              "screens_used": {
+                                "type": "integer",
+                                "description": "Number of screens used at this venue",
+                                "minimum": 0
+                              }
+                            },
+                            "required": [
+                              "venue_id",
+                              "impressions"
+                            ],
+                            "additionalProperties": true
+                          }
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "viewability": {
+                      "type": "object",
+                      "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                      "properties": {
+                        "measurable_impressions": {
+                          "type": "number",
+                          "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                          "minimum": 0
+                        },
+                        "viewable_impressions": {
+                          "type": "number",
+                          "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                          "minimum": 0
+                        },
+                        "viewable_rate": {
+                          "type": "number",
+                          "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                          "minimum": 0,
+                          "maximum": 1
+                        },
+                        "standard": {
+                          "title": "Viewability Standard",
+                          "description": "Viewability measurement standard applied to these metrics.",
+                          "type": "string",
+                          "enum": [
+                            "mrc",
+                            "groupm"
+                          ],
+                          "enumDescriptions": {
+                            "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                            "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                          }
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "engagements": {
+                      "type": "number",
+                      "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                      "minimum": 0
+                    },
+                    "follows": {
+                      "type": "number",
+                      "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                      "minimum": 0
+                    },
+                    "saves": {
+                      "type": "number",
+                      "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                      "minimum": 0
+                    },
+                    "profile_visits": {
+                      "type": "number",
+                      "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                      "minimum": 0
+                    },
+                    "engagement_rate": {
+                      "type": "number",
+                      "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                      "minimum": 0,
+                      "maximum": 1
+                    },
+                    "cost_per_click": {
+                      "type": "number",
+                      "description": "Cost per click (spend / clicks)",
+                      "minimum": 0
+                    },
+                    "by_action_source": {
+                      "type": "array",
+                      "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "action_source": {
+                            "title": "Action Source",
+                            "description": "Where the conversion occurred",
+                            "type": "string",
+                            "enum": [
+                              "website",
+                              "app",
+                              "offline",
+                              "phone_call",
+                              "chat",
+                              "email",
+                              "in_store",
+                              "system_generated",
+                              "other"
+                            ],
+                            "enumDescriptions": {
+                              "website": "Event occurred on a website",
+                              "app": "Event occurred in a mobile or desktop app",
+                              "offline": "Event occurred offline (imported data)",
+                              "phone_call": "Event originated from a phone call",
+                              "chat": "Event originated from a chat conversation",
+                              "email": "Event originated from an email interaction",
+                              "in_store": "Event occurred at a physical retail location",
+                              "system_generated": "Event generated by an automated system",
+                              "other": "Other source (specify in ext)"
+                            }
+                          },
+                          "event_source_id": {
+                            "type": "string",
+                            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                          },
+                          "count": {
+                            "type": "number",
+                            "description": "Number of conversions from this action source",
+                            "minimum": 0
+                          },
+                          "value": {
+                            "type": "number",
+                            "description": "Total monetary value of conversions from this action source",
+                            "minimum": 0
+                          }
+                        },
+                        "required": [
+                          "action_source",
+                          "count"
+                        ],
+                        "additionalProperties": true
+                      }
+                    }
+                  },
+                  "dependencies": {
+                    "reach": [
+                      "reach_unit"
+                    ]
+                  },
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "package_id": {
+                      "type": "string",
+                      "description": "Seller's package identifier"
+                    },
+                    "pacing_index": {
+                      "type": "number",
+                      "description": "Delivery pace (1.0 = on track, <1.0 = behind, >1.0 = ahead)",
+                      "minimum": 0
+                    },
+                    "pricing_model": {
+                      "title": "Pricing Model",
+                      "description": "The pricing model used for this package (e.g., cpm, cpcv, cpp). Indicates how the package is billed and which metrics are most relevant for optimization.",
+                      "type": "string",
+                      "enum": [
+                        "cpm",
+                        "vcpm",
+                        "cpc",
+                        "cpcv",
+                        "cpv",
+                        "cpp",
+                        "cpa",
+                        "flat_rate",
+                        "time"
+                      ],
+                      "enumDescriptions": {
+                        "cpm": "Cost Per Mille - cost per 1,000 impressions",
+                        "vcpm": "Viewable Cost Per Mille - cost per 1,000 viewable impressions (MRC standard)",
+                        "cpc": "Cost Per Click - cost per click on the ad",
+                        "cpcv": "Cost Per Completed View - cost per 100% video/audio completion",
+                        "cpv": "Cost Per View - cost per view at publisher-defined threshold (e.g., 50% completion)",
+                        "cpp": "Cost Per Point - cost per Gross Rating Point or Target Rating Point (TV/audio)",
+                        "cpa": "Cost Per Acquisition - cost per conversion event (purchase, lead, signup, etc.)",
+                        "flat_rate": "Flat Rate - fixed cost regardless of delivery volume (sponsorships, takeovers)",
+                        "time": "Time - cost per time unit (hour, day, week, or month) that scales with campaign duration"
+                      }
+                    },
+                    "rate": {
+                      "type": "number",
+                      "description": "The pricing rate for this package in the specified currency. For fixed-rate pricing, this is the agreed rate (e.g., CPM rate of 12.50 means $12.50 per 1,000 impressions). For auction-based pricing, this represents the effective rate based on actual delivery.",
+                      "minimum": 0
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code (e.g., USD, EUR, GBP) for this package's pricing. Indicates the currency in which the rate and spend values are denominated. Different packages can use different currencies when supported by the publisher.",
+                      "pattern": "^[A-Z]{3}$"
+                    },
+                    "delivery_status": {
+                      "type": "string",
+                      "description": "System-reported operational state of this package. Reflects actual delivery state independent of buyer pause control.",
+                      "enum": [
+                        "delivering",
+                        "completed",
+                        "budget_exhausted",
+                        "flight_ended",
+                        "goal_met"
+                      ]
+                    },
+                    "paused": {
+                      "type": "boolean",
+                      "description": "Whether this package is currently paused by the buyer"
+                    },
+                    "is_final": {
+                      "type": "boolean",
+                      "description": "Whether this delivery data is final for the reporting period. When false, the data may be updated as measurement matures (e.g., broadcast C7 window accumulating DVR playback) or as processing completes (e.g., IVT filtering, deduplication). When true, the seller considers this data closed \u2014 no further updates for this period. Absent means the seller does not distinguish provisional from final data."
+                    },
+                    "measurement_window": {
+                      "type": "string",
+                      "maxLength": 50,
+                      "description": "Which measurement window this data represents, referencing a window_id from the product's reporting_capabilities.measurement_windows. For broadcast: 'live', 'c3', 'c7'. When absent, the data is not windowed (standard digital reporting). When present with is_final: false, a later report for the same period will provide a wider window or more complete data.",
+                      "examples": [
+                        "live",
+                        "c3",
+                        "c7"
+                      ]
+                    },
+                    "supersedes_window": {
+                      "type": "string",
+                      "maxLength": 50,
+                      "description": "Which measurement window this data replaces. Present on window_update notifications to indicate progression (e.g., 'live' when reporting C3 data that supersedes live-only numbers). Absent on the first report for a period. Buyers should replace stored data for the superseded window with this report's data.",
+                      "examples": [
+                        "live",
+                        "c3"
+                      ]
+                    },
+                    "by_catalog_item": {
+                      "type": "array",
+                      "description": "Delivery by catalog item within this package. Available for catalog-driven packages when the seller supports item-level reporting.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "content_id": {
+                                "type": "string",
+                                "description": "Catalog item identifier (e.g., SKU, GTIN, job_id, offering_id)"
+                              },
+                              "content_id_type": {
+                                "title": "Content ID Type",
+                                "description": "Identifier type for this content_id",
+                                "type": "string",
+                                "enum": [
+                                  "sku",
+                                  "gtin",
+                                  "offering_id",
+                                  "job_id",
+                                  "hotel_id",
+                                  "flight_id",
+                                  "vehicle_id",
+                                  "listing_id",
+                                  "store_id",
+                                  "program_id",
+                                  "destination_id",
+                                  "app_id"
+                                ]
+                              }
+                            },
+                            "required": [
+                              "content_id",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_creative": {
+                      "type": "array",
+                      "description": "Metrics broken down by creative within this package. Available when the seller supports creative-level reporting.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "creative_id": {
+                                "type": "string",
+                                "description": "Creative identifier matching the creative assignment"
+                              },
+                              "weight": {
+                                "type": "number",
+                                "description": "Observed delivery share for this creative within the package during the reporting period, expressed as a percentage (0-100). Reflects actual delivery distribution, not a configured setting.",
+                                "minimum": 0,
+                                "maximum": 100
+                              }
+                            },
+                            "required": [
+                              "creative_id",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_keyword": {
+                      "type": "array",
+                      "description": "Metrics broken down by keyword within this package. One row per (keyword, match_type) pair \u2014 the same keyword with different match types appears as separate rows. Keyword-grain only: rows reflect aggregate performance of each targeted keyword, not individual search queries. Rows may not sum to package totals when a single impression is attributed to the triggering keyword only. Available for search and retail media packages when the seller supports keyword-level reporting.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "keyword": {
+                                "type": "string",
+                                "description": "The targeted keyword"
+                              },
+                              "match_type": {
+                                "type": "string",
+                                "enum": [
+                                  "broad",
+                                  "phrase",
+                                  "exact"
+                                ],
+                                "description": "Match type for this keyword"
+                              }
+                            },
+                            "required": [
+                              "keyword",
+                              "match_type",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_geo": {
+                      "type": "array",
+                      "description": "Delivery by geographic area within this package. Available when the buyer requests geo breakdown via reporting_dimensions and the seller supports it. Each dimension's rows are independent slices that should sum to the package total.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "geo_level": {
+                                "title": "Geographic Targeting Level",
+                                "description": "Geographic level of this entry (country, region, metro, postal_area)",
+                                "type": "string",
+                                "enum": [
+                                  "country",
+                                  "region",
+                                  "metro",
+                                  "postal_area"
+                                ]
+                              },
+                              "system": {
+                                "type": "string",
+                                "description": "Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Present when geo_level is 'metro' or 'postal_area'."
+                              },
+                              "geo_code": {
+                                "type": "string",
+                                "description": "Geographic code within the level and system. Country: ISO 3166-1 alpha-2 ('US'). Region: ISO 3166-2 with country prefix ('US-CA'). Metro/postal: system-specific code ('501', '10001')."
+                              },
+                              "geo_name": {
+                                "type": "string",
+                                "description": "Human-readable geographic name (e.g., 'United States', 'California', 'New York DMA')"
+                              }
+                            },
+                            "required": [
+                              "geo_level",
+                              "geo_code",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_geo_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_geo was truncated due to the requested limit or a seller-imposed maximum. Sellers MUST return this flag whenever by_geo is present (false means the list is complete)."
+                    },
+                    "by_device_type": {
+                      "type": "array",
+                      "description": "Delivery by device form factor within this package. Available when the buyer requests device_type breakdown via reporting_dimensions and the seller supports it.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "device_type": {
+                                "title": "Device Type",
+                                "description": "Device form factor (desktop, mobile, tablet, ctv, dooh, unknown)",
+                                "type": "string",
+                                "enum": [
+                                  "desktop",
+                                  "mobile",
+                                  "tablet",
+                                  "ctv",
+                                  "dooh",
+                                  "unknown"
+                                ]
+                              }
+                            },
+                            "required": [
+                              "device_type",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_device_type_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_device_type was truncated. Sellers MUST return this flag whenever by_device_type is present (false means the list is complete)."
+                    },
+                    "by_device_platform": {
+                      "type": "array",
+                      "description": "Delivery by operating system within this package. Available when the buyer requests device_platform breakdown via reporting_dimensions and the seller supports it. Useful for CTV campaigns where tvOS vs Roku OS vs Fire OS matters.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "device_platform": {
+                                "title": "Device Platform",
+                                "description": "Operating system platform",
+                                "type": "string",
+                                "enum": [
+                                  "ios",
+                                  "android",
+                                  "windows",
+                                  "macos",
+                                  "linux",
+                                  "chromeos",
+                                  "tvos",
+                                  "tizen",
+                                  "webos",
+                                  "fire_os",
+                                  "roku_os",
+                                  "unknown"
+                                ]
+                              }
+                            },
+                            "required": [
+                              "device_platform",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_device_platform_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_device_platform was truncated. Sellers MUST return this flag whenever by_device_platform is present (false means the list is complete)."
+                    },
+                    "by_audience": {
+                      "type": "array",
+                      "description": "Delivery by audience segment within this package. Available when the buyer requests audience breakdown via reporting_dimensions and the seller supports it. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "audience_id": {
+                                "type": "string",
+                                "description": "Audience segment identifier. For 'synced' source, matches audience_id from sync_audiences. For other sources, seller-defined."
+                              },
+                              "audience_source": {
+                                "title": "Audience Source",
+                                "description": "Origin of the audience segment (synced, platform, third_party, lookalike, retargeting, unknown)",
+                                "type": "string",
+                                "enum": [
+                                  "synced",
+                                  "platform",
+                                  "third_party",
+                                  "lookalike",
+                                  "retargeting",
+                                  "unknown"
+                                ]
+                              },
+                              "audience_name": {
+                                "type": "string",
+                                "description": "Human-readable audience segment name"
+                              }
+                            },
+                            "required": [
+                              "audience_id",
+                              "audience_source",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_audience_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_audience was truncated. Sellers MUST return this flag whenever by_audience is present (false means the list is complete)."
+                    },
+                    "by_placement": {
+                      "type": "array",
+                      "description": "Delivery by placement within this package. Available when the buyer requests placement breakdown via reporting_dimensions and the seller supports it. Placement IDs reference the product's placements array.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "title": "Delivery Metrics",
+                            "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+                            "type": "object",
+                            "properties": {
+                              "impressions": {
+                                "type": "number",
+                                "description": "Impressions delivered",
+                                "minimum": 0
+                              },
+                              "spend": {
+                                "type": "number",
+                                "description": "Amount spent",
+                                "minimum": 0
+                              },
+                              "clicks": {
+                                "type": "number",
+                                "description": "Total clicks",
+                                "minimum": 0
+                              },
+                              "ctr": {
+                                "type": "number",
+                                "description": "Click-through rate (clicks/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "views": {
+                                "type": "number",
+                                "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+                                "minimum": 0
+                              },
+                              "completed_views": {
+                                "type": "number",
+                                "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
+                                "minimum": 0
+                              },
+                              "completion_rate": {
+                                "type": "number",
+                                "description": "Completion rate (completed_views/impressions)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "conversions": {
+                                "type": "number",
+                                "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+                                "minimum": 0
+                              },
+                              "conversion_value": {
+                                "type": "number",
+                                "description": "Total monetary value of attributed conversions (in the reporting currency)",
+                                "minimum": 0
+                              },
+                              "roas": {
+                                "type": "number",
+                                "description": "Return on ad spend (conversion_value / spend)",
+                                "minimum": 0
+                              },
+                              "cost_per_acquisition": {
+                                "type": "number",
+                                "description": "Cost per conversion (spend / conversions)",
+                                "minimum": 0
+                              },
+                              "new_to_brand_rate": {
+                                "type": "number",
+                                "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "leads": {
+                                "type": "number",
+                                "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+                                "minimum": 0
+                              },
+                              "by_event_type": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "event_type": {
+                                      "title": "Event Type",
+                                      "description": "The event type",
+                                      "type": "string",
+                                      "enum": [
+                                        "page_view",
+                                        "view_content",
+                                        "select_content",
+                                        "select_item",
+                                        "search",
+                                        "share",
+                                        "add_to_cart",
+                                        "remove_from_cart",
+                                        "viewed_cart",
+                                        "add_to_wishlist",
+                                        "initiate_checkout",
+                                        "add_payment_info",
+                                        "purchase",
+                                        "refund",
+                                        "lead",
+                                        "qualify_lead",
+                                        "close_convert_lead",
+                                        "disqualify_lead",
+                                        "complete_registration",
+                                        "subscribe",
+                                        "start_trial",
+                                        "app_install",
+                                        "app_launch",
+                                        "contact",
+                                        "schedule",
+                                        "donate",
+                                        "submit_application",
+                                        "custom"
+                                      ],
+                                      "enumDescriptions": {
+                                        "page_view": "User viewed a page",
+                                        "view_content": "User viewed specific content (product, article, etc.)",
+                                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                                        "select_item": "User selected a specific product or item from a list",
+                                        "search": "User performed a search",
+                                        "share": "User shared content via social or messaging",
+                                        "add_to_cart": "User added an item to cart",
+                                        "remove_from_cart": "User removed an item from cart",
+                                        "viewed_cart": "User viewed their shopping cart",
+                                        "add_to_wishlist": "User added an item to a wishlist",
+                                        "initiate_checkout": "User started checkout process",
+                                        "add_payment_info": "User added payment information",
+                                        "purchase": "User completed a purchase",
+                                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                        "lead": "User expressed interest (form submission, signup, etc.)",
+                                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                                        "complete_registration": "User completed account registration",
+                                        "subscribe": "User subscribed to a service or newsletter",
+                                        "start_trial": "User started a free trial",
+                                        "app_install": "User installed an application",
+                                        "app_launch": "User launched an application",
+                                        "contact": "User initiated contact (call, message, etc.)",
+                                        "schedule": "User scheduled an appointment or event",
+                                        "donate": "User made a donation",
+                                        "submit_application": "User submitted an application (loan, job, etc.)",
+                                        "custom": "Custom event type (specify in custom_event_name)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of events of this type",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of events of this type",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "event_type",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "grps": {
+                                "type": "number",
+                                "description": "Gross Rating Points delivered (for CPP)",
+                                "minimum": 0
+                              },
+                              "reach": {
+                                "type": "number",
+                                "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+                                "minimum": 0
+                              },
+                              "reach_unit": {
+                                "allOf": [
+                                  {
+                                    "title": "Reach Unit",
+                                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                                    "type": "string",
+                                    "enum": [
+                                      "individuals",
+                                      "households",
+                                      "devices",
+                                      "accounts",
+                                      "cookies",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                      "households": "Unique households or TV homes.",
+                                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                      "cookies": "Unique browser cookies.",
+                                      "custom": "Publisher-defined reach unit. Describe in ext."
+                                    }
+                                  }
+                                ],
+                                "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+                              },
+                              "frequency": {
+                                "type": "number",
+                                "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+                                "minimum": 0
+                              },
+                              "quartile_data": {
+                                "type": "object",
+                                "description": "Audio/video quartile completion data",
+                                "properties": {
+                                  "q1_views": {
+                                    "type": "number",
+                                    "description": "25% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q2_views": {
+                                    "type": "number",
+                                    "description": "50% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q3_views": {
+                                    "type": "number",
+                                    "description": "75% completion views",
+                                    "minimum": 0
+                                  },
+                                  "q4_views": {
+                                    "type": "number",
+                                    "description": "100% completion views",
+                                    "minimum": 0
+                                  }
+                                }
+                              },
+                              "dooh_metrics": {
+                                "type": "object",
+                                "description": "DOOH-specific metrics (only included for DOOH campaigns)",
+                                "properties": {
+                                  "loop_plays": {
+                                    "type": "integer",
+                                    "description": "Number of times ad played in rotation",
+                                    "minimum": 0
+                                  },
+                                  "screens_used": {
+                                    "type": "integer",
+                                    "description": "Number of unique screens displaying the ad",
+                                    "minimum": 0
+                                  },
+                                  "screen_time_seconds": {
+                                    "type": "integer",
+                                    "description": "Total display time in seconds",
+                                    "minimum": 0
+                                  },
+                                  "sov_achieved": {
+                                    "type": "number",
+                                    "description": "Actual share of voice delivered (0.0 to 1.0)",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "calculation_notes": {
+                                    "type": "string",
+                                    "description": "Explanation of how DOOH impressions were calculated"
+                                  },
+                                  "venue_breakdown": {
+                                    "type": "array",
+                                    "description": "Per-venue performance breakdown",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "venue_id": {
+                                          "type": "string",
+                                          "description": "Venue identifier"
+                                        },
+                                        "venue_name": {
+                                          "type": "string",
+                                          "description": "Human-readable venue name"
+                                        },
+                                        "venue_type": {
+                                          "type": "string",
+                                          "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+                                        },
+                                        "impressions": {
+                                          "type": "integer",
+                                          "description": "Impressions delivered at this venue",
+                                          "minimum": 0
+                                        },
+                                        "loop_plays": {
+                                          "type": "integer",
+                                          "description": "Loop plays at this venue",
+                                          "minimum": 0
+                                        },
+                                        "screens_used": {
+                                          "type": "integer",
+                                          "description": "Number of screens used at this venue",
+                                          "minimum": 0
+                                        }
+                                      },
+                                      "required": [
+                                        "venue_id",
+                                        "impressions"
+                                      ],
+                                      "additionalProperties": true
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "viewability": {
+                                "type": "object",
+                                "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
+                                "properties": {
+                                  "measurable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
+                                    "minimum": 0
+                                  },
+                                  "viewable_impressions": {
+                                    "type": "number",
+                                    "description": "Impressions that met the viewability threshold defined by the measurement standard.",
+                                    "minimum": 0
+                                  },
+                                  "viewable_rate": {
+                                    "type": "number",
+                                    "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
+                                    "minimum": 0,
+                                    "maximum": 1
+                                  },
+                                  "standard": {
+                                    "title": "Viewability Standard",
+                                    "description": "Viewability measurement standard applied to these metrics.",
+                                    "type": "string",
+                                    "enum": [
+                                      "mrc",
+                                      "groupm"
+                                    ],
+                                    "enumDescriptions": {
+                                      "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                                      "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                                    }
+                                  }
+                                },
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "type": "number",
+                                "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+                                "minimum": 0
+                              },
+                              "follows": {
+                                "type": "number",
+                                "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "saves": {
+                                "type": "number",
+                                "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+                                "minimum": 0
+                              },
+                              "profile_visits": {
+                                "type": "number",
+                                "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+                                "minimum": 0
+                              },
+                              "engagement_rate": {
+                                "type": "number",
+                                "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
+                                "minimum": 0,
+                                "maximum": 1
+                              },
+                              "cost_per_click": {
+                                "type": "number",
+                                "description": "Cost per click (spend / clicks)",
+                                "minimum": 0
+                              },
+                              "by_action_source": {
+                                "type": "array",
+                                "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "action_source": {
+                                      "title": "Action Source",
+                                      "description": "Where the conversion occurred",
+                                      "type": "string",
+                                      "enum": [
+                                        "website",
+                                        "app",
+                                        "offline",
+                                        "phone_call",
+                                        "chat",
+                                        "email",
+                                        "in_store",
+                                        "system_generated",
+                                        "other"
+                                      ],
+                                      "enumDescriptions": {
+                                        "website": "Event occurred on a website",
+                                        "app": "Event occurred in a mobile or desktop app",
+                                        "offline": "Event occurred offline (imported data)",
+                                        "phone_call": "Event originated from a phone call",
+                                        "chat": "Event originated from a chat conversation",
+                                        "email": "Event originated from an email interaction",
+                                        "in_store": "Event occurred at a physical retail location",
+                                        "system_generated": "Event generated by an automated system",
+                                        "other": "Other source (specify in ext)"
+                                      }
+                                    },
+                                    "event_source_id": {
+                                      "type": "string",
+                                      "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+                                    },
+                                    "count": {
+                                      "type": "number",
+                                      "description": "Number of conversions from this action source",
+                                      "minimum": 0
+                                    },
+                                    "value": {
+                                      "type": "number",
+                                      "description": "Total monetary value of conversions from this action source",
+                                      "minimum": 0
+                                    }
+                                  },
+                                  "required": [
+                                    "action_source",
+                                    "count"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              }
+                            },
+                            "dependencies": {
+                              "reach": [
+                                "reach_unit"
+                              ]
+                            },
+                            "additionalProperties": true
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "placement_id": {
+                                "type": "string",
+                                "description": "Placement identifier from the product's placements array"
+                              },
+                              "placement_name": {
+                                "type": "string",
+                                "description": "Human-readable placement name"
+                              }
+                            },
+                            "required": [
+                              "placement_id",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_placement_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_placement was truncated. Sellers MUST return this flag whenever by_placement is present (false means the list is complete)."
+                    },
+                    "daily_breakdown": {
+                      "type": "array",
+                      "description": "Day-by-day delivery for this package. Only present when include_package_daily_breakdown is true in the request. Enables per-package pacing analysis and line-item monitoring.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "date": {
+                            "type": "string",
+                            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+                            "description": "Date (YYYY-MM-DD)"
+                          },
+                          "impressions": {
+                            "type": "number",
+                            "description": "Daily impressions for this package",
+                            "minimum": 0
+                          },
+                          "spend": {
+                            "type": "number",
+                            "description": "Daily spend for this package",
+                            "minimum": 0
+                          },
+                          "conversions": {
+                            "type": "number",
+                            "description": "Daily conversions for this package",
+                            "minimum": 0
+                          },
+                          "conversion_value": {
+                            "type": "number",
+                            "description": "Daily conversion value for this package",
+                            "minimum": 0
+                          },
+                          "roas": {
+                            "type": "number",
+                            "description": "Daily return on ad spend (conversion_value / spend)",
+                            "minimum": 0
+                          },
+                          "new_to_brand_rate": {
+                            "type": "number",
+                            "description": "Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                            "minimum": 0,
+                            "maximum": 1
+                          }
+                        },
+                        "required": [
+                          "date",
+                          "impressions",
+                          "spend"
+                        ],
+                        "additionalProperties": true
+                      }
+                    }
+                  },
+                  "required": [
+                    "package_id",
+                    "spend",
+                    "pricing_model",
+                    "rate",
+                    "currency"
+                  ]
+                }
+              ]
+            }
+          },
+          "daily_breakdown": {
+            "type": "array",
+            "description": "Day-by-day delivery",
+            "items": {
+              "type": "object",
+              "properties": {
+                "date": {
+                  "type": "string",
+                  "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+                  "description": "Date (YYYY-MM-DD)"
+                },
+                "impressions": {
+                  "type": "number",
+                  "description": "Daily impressions",
+                  "minimum": 0
+                },
+                "spend": {
+                  "type": "number",
+                  "description": "Daily spend",
+                  "minimum": 0
+                },
+                "conversions": {
+                  "type": "number",
+                  "description": "Daily conversions",
+                  "minimum": 0
+                },
+                "conversion_value": {
+                  "type": "number",
+                  "description": "Daily conversion value",
+                  "minimum": 0
+                },
+                "roas": {
+                  "type": "number",
+                  "description": "Daily return on ad spend (conversion_value / spend)",
+                  "minimum": 0
+                },
+                "new_to_brand_rate": {
+                  "type": "number",
+                  "description": "Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
+                  "minimum": 0,
+                  "maximum": 1
+                }
+              },
+              "required": [
+                "date",
+                "impressions",
+                "spend"
+              ],
+              "additionalProperties": true
+            }
+          }
+        },
+        "required": [
+          "media_buy_id",
+          "status",
+          "totals",
+          "by_package"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings (e.g., missing delivery data, reporting platform issues)",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "reporting_period",
+    "currency",
+    "media_buy_deliveries"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.381Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/get-media-buys-request.json b/schemas/cache/bundled/media-buy/get-media-buys-request.json
new file mode 100644
index 000000000..da34eab11
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/get-media-buys-request.json
@@ -0,0 +1,230 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buys Request",
+  "description": "Request parameters for retrieving media buy status, creative approval state, and optional delivery snapshots",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account to retrieve media buys for. When omitted, returns data across all accessible accounts.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "media_buy_ids": {
+      "type": "array",
+      "description": "Array of media buy IDs to retrieve. When omitted, returns a paginated set of accessible media buys matching status_filter.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "status_filter": {
+      "oneOf": [
+        {
+          "title": "Media Buy Status",
+          "description": "Status of a media buy.",
+          "type": "string",
+          "enum": [
+            "pending_creatives",
+            "pending_start",
+            "active",
+            "paused",
+            "completed",
+            "rejected",
+            "canceled"
+          ],
+          "enumDescriptions": {
+            "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+            "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
+            "active": "Media buy is currently running",
+            "paused": "Media buy is temporarily paused",
+            "completed": "Media buy has finished running",
+            "rejected": "Media buy was declined by the seller after creation",
+            "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+          }
+        },
+        {
+          "type": "array",
+          "items": {
+            "title": "Media Buy Status",
+            "description": "Status of a media buy.",
+            "type": "string",
+            "enum": [
+              "pending_creatives",
+              "pending_start",
+              "active",
+              "paused",
+              "completed",
+              "rejected",
+              "canceled"
+            ],
+            "enumDescriptions": {
+              "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+              "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
+              "active": "Media buy is currently running",
+              "paused": "Media buy is temporarily paused",
+              "completed": "Media buy has finished running",
+              "rejected": "Media buy was declined by the seller after creation",
+              "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+            }
+          },
+          "minItems": 1
+        }
+      ],
+      "description": "Filter by status. Can be a single status or array of statuses. Defaults to [\"active\"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied."
+    },
+    "include_snapshot": {
+      "type": "boolean",
+      "description": "When true, include a near-real-time delivery snapshot for each package. Snapshots reflect the latest available entity-level stats from the platform (e.g., updated every ~15 minutes on GAM, ~1 hour on batch-only platforms). The staleness_seconds field on each snapshot indicates data freshness. If a snapshot cannot be returned, package.snapshot_unavailable_reason explains why. Defaults to false.",
+      "default": false
+    },
+    "include_history": {
+      "type": "integer",
+      "description": "When present, include the last N revision history entries for each media buy (returns min(N, available entries)). Each entry contains revision number, timestamp, actor, and a summary of what changed. Omit or set to 0 to exclude history (default). Recommended: 5-10 for monitoring, 50+ for audit.",
+      "minimum": 0,
+      "maximum": 1000,
+      "default": 0
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Cursor-based pagination controls. Strongly recommended when querying broad scopes (for example, all active media buys in an account).",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.385Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/get-media-buys-response.json b/schemas/cache/bundled/media-buy/get-media-buys-response.json
new file mode 100644
index 000000000..16603148d
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/get-media-buys-response.json
@@ -0,0 +1,1407 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buys Response",
+  "description": "Response payload for get_media_buys task. Returns media buy configuration, creative approval state, and optional delivery snapshots.",
+  "type": "object",
+  "properties": {
+    "media_buys": {
+      "type": "array",
+      "description": "Array of media buys with status, creative approval state, and optional delivery snapshots",
+      "items": {
+        "type": "object",
+        "properties": {
+          "media_buy_id": {
+            "type": "string",
+            "description": "Seller's unique identifier for the media buy"
+          },
+          "account": {
+            "title": "Account",
+            "description": "Account billed for this media buy",
+            "type": "object",
+            "properties": {
+              "account_id": {
+                "type": "string",
+                "description": "Unique identifier for this account"
+              },
+              "name": {
+                "type": "string",
+                "description": "Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')"
+              },
+              "advertiser": {
+                "type": "string",
+                "description": "The advertiser whose rates apply to this account"
+              },
+              "billing_proxy": {
+                "type": "string",
+                "description": "Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)"
+              },
+              "status": {
+                "title": "Account Status",
+                "description": "Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.",
+                "type": "string",
+                "enum": [
+                  "active",
+                  "pending_approval",
+                  "rejected",
+                  "payment_required",
+                  "suspended",
+                  "closed"
+                ],
+                "enumDescriptions": {
+                  "active": "Account is operational and can create media buys",
+                  "pending_approval": "Seller is reviewing the account (credit, contracts)",
+                  "rejected": "Seller declined the account request \u2014 terminal state",
+                  "payment_required": "Credit limit reached or funds depleted",
+                  "suspended": "Was active, now paused \u2014 operations gated",
+                  "closed": "Was active, now terminated \u2014 terminal state"
+                }
+              },
+              "brand": {
+                "title": "Brand Reference",
+                "description": "Brand reference identifying the advertiser",
+                "type": "object",
+                "properties": {
+                  "domain": {
+                    "type": "string",
+                    "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "brand_id": {
+                    "title": "Brand ID",
+                    "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                    "type": "string",
+                    "pattern": "^[a-z0-9_]+$",
+                    "examples": [
+                      "tide",
+                      "cheerios",
+                      "air_jordan",
+                      "nike",
+                      "pampers"
+                    ]
+                  }
+                },
+                "required": [
+                  "domain"
+                ],
+                "additionalProperties": false,
+                "examples": [
+                  {
+                    "domain": "nova-brands.com",
+                    "brand_id": "spark"
+                  },
+                  {
+                    "domain": "nova-brands.com",
+                    "brand_id": "glow"
+                  },
+                  {
+                    "domain": "acme-corp.com"
+                  }
+                ]
+              },
+              "operator": {
+                "type": "string",
+                "description": "Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "billing": {
+                "type": "string",
+                "enum": [
+                  "operator",
+                  "agent",
+                  "advertiser"
+                ],
+                "description": "Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+              },
+              "billing_entity": {
+                "title": "Business Entity",
+                "description": "Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).",
+                "type": "object",
+                "properties": {
+                  "legal_name": {
+                    "type": "string",
+                    "description": "Registered legal name of the business entity",
+                    "maxLength": 200
+                  },
+                  "vat_id": {
+                    "type": "string",
+                    "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+                    "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+                  },
+                  "tax_id": {
+                    "type": "string",
+                    "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+                    "maxLength": 30
+                  },
+                  "registration_number": {
+                    "type": "string",
+                    "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+                    "maxLength": 50
+                  },
+                  "address": {
+                    "type": "object",
+                    "description": "Postal address for invoicing and legal correspondence",
+                    "properties": {
+                      "street": {
+                        "type": "string",
+                        "description": "Street address including building number",
+                        "maxLength": 200
+                      },
+                      "city": {
+                        "type": "string",
+                        "maxLength": 100
+                      },
+                      "postal_code": {
+                        "type": "string",
+                        "maxLength": 20
+                      },
+                      "region": {
+                        "type": "string",
+                        "description": "State, province, or region",
+                        "maxLength": 100
+                      },
+                      "country": {
+                        "type": "string",
+                        "description": "ISO 3166-1 alpha-2 country code",
+                        "pattern": "^[A-Z]{2}$"
+                      }
+                    },
+                    "required": [
+                      "street",
+                      "city",
+                      "postal_code",
+                      "country"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "contacts": {
+                    "type": "array",
+                    "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "billing",
+                            "legal",
+                            "creative",
+                            "general"
+                          ],
+                          "enumDescriptions": {
+                            "billing": "Accounts payable and invoice queries",
+                            "legal": "Contract and compliance matters",
+                            "creative": "Material submission and creative approval",
+                            "general": "Default contact when no specific role applies"
+                          },
+                          "description": "Contact's functional role in the business relationship"
+                        },
+                        "name": {
+                          "type": "string",
+                          "description": "Full name of the contact",
+                          "maxLength": 200
+                        },
+                        "email": {
+                          "type": "string",
+                          "format": "email",
+                          "maxLength": 254
+                        },
+                        "phone": {
+                          "type": "string",
+                          "maxLength": 30
+                        }
+                      },
+                      "required": [
+                        "role"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "maxItems": 10
+                  },
+                  "bank": {
+                    "type": "object",
+                    "writeOnly": true,
+                    "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+                    "properties": {
+                      "account_holder": {
+                        "type": "string",
+                        "description": "Name on the bank account",
+                        "maxLength": 200
+                      },
+                      "iban": {
+                        "type": "string",
+                        "description": "International Bank Account Number (SEPA markets)",
+                        "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+                      },
+                      "bic": {
+                        "type": "string",
+                        "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+                        "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+                      },
+                      "routing_number": {
+                        "type": "string",
+                        "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+                        "maxLength": 30
+                      },
+                      "account_number": {
+                        "type": "string",
+                        "description": "Bank account number for non-SEPA markets",
+                        "maxLength": 30
+                      }
+                    },
+                    "required": [
+                      "account_holder"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "ext": {
+                    "title": "Extension Object",
+                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                    "type": "object",
+                    "additionalProperties": true
+                  }
+                },
+                "required": [
+                  "legal_name"
+                ],
+                "additionalProperties": false,
+                "examples": [
+                  {
+                    "description": "German agency with full B2B details",
+                    "data": {
+                      "legal_name": "Pinnacle Media GmbH",
+                      "vat_id": "DE123456789",
+                      "registration_number": "HRB 12345",
+                      "address": {
+                        "street": "Friedrichstrasse 100",
+                        "city": "Berlin",
+                        "postal_code": "10117",
+                        "country": "DE"
+                      },
+                      "contacts": [
+                        {
+                          "role": "billing",
+                          "name": "Sam Adeyemi",
+                          "email": "billing@pinnacle-media.com",
+                          "phone": "+49 30 12345678"
+                        }
+                      ],
+                      "bank": {
+                        "account_holder": "Pinnacle Media GmbH",
+                        "iban": "DE89370400440532013000",
+                        "bic": "COBADEFFXXX"
+                      }
+                    }
+                  },
+                  {
+                    "description": "US advertiser with EIN and domestic bank details",
+                    "data": {
+                      "legal_name": "Acme Corporation",
+                      "tax_id": "12-3456789",
+                      "address": {
+                        "street": "123 Main St",
+                        "city": "New York",
+                        "postal_code": "10001",
+                        "region": "NY",
+                        "country": "US"
+                      },
+                      "contacts": [
+                        {
+                          "role": "billing",
+                          "name": "AP Department",
+                          "email": "ap@acme-corp.com"
+                        }
+                      ],
+                      "bank": {
+                        "account_holder": "Acme Corporation",
+                        "routing_number": "021000021",
+                        "account_number": "123456789"
+                      }
+                    }
+                  }
+                ]
+              },
+              "rate_card": {
+                "type": "string",
+                "description": "Identifier for the rate card applied to this account"
+              },
+              "payment_terms": {
+                "type": "string",
+                "enum": [
+                  "net_15",
+                  "net_30",
+                  "net_45",
+                  "net_60",
+                  "net_90",
+                  "prepay"
+                ],
+                "description": "Payment terms agreed for this account. Binding for all invoices when the account is active."
+              },
+              "credit_limit": {
+                "type": "object",
+                "description": "Maximum outstanding balance allowed",
+                "properties": {
+                  "amount": {
+                    "type": "number",
+                    "minimum": 0
+                  },
+                  "currency": {
+                    "type": "string",
+                    "pattern": "^[A-Z]{3}$"
+                  }
+                },
+                "required": [
+                  "amount",
+                  "currency"
+                ]
+              },
+              "setup": {
+                "type": "object",
+                "description": "Present when status is 'pending_approval'. Contains next steps for completing account activation.",
+                "properties": {
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL where the human can complete the required action (credit application, legal agreement, add funds)."
+                  },
+                  "message": {
+                    "type": "string",
+                    "description": "Human-readable description of what's needed."
+                  },
+                  "expires_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When this setup link expires."
+                  }
+                },
+                "required": [
+                  "message"
+                ],
+                "additionalProperties": true
+              },
+              "account_scope": {
+                "type": "string",
+                "enum": [
+                  "operator",
+                  "brand",
+                  "operator_brand",
+                  "agent"
+                ],
+                "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+              },
+              "governance_agents": {
+                "type": "array",
+                "description": "Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses \u2014 use sync_governance to set or update credentials.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "pattern": "^https://",
+                      "description": "Governance agent endpoint URL. Must use HTTPS."
+                    },
+                    "categories": {
+                      "type": "array",
+                      "items": {
+                        "type": "string",
+                        "maxLength": 64,
+                        "pattern": "^[a-z][a-z0-9_]*$"
+                      },
+                      "description": "Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+                      "maxItems": 20
+                    }
+                  },
+                  "required": [
+                    "url"
+                  ],
+                  "additionalProperties": false
+                },
+                "maxItems": 10
+              },
+              "reporting_bucket": {
+                "type": "object",
+                "description": "Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix \u2014 bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities).",
+                "properties": {
+                  "protocol": {
+                    "title": "Cloud Storage Protocol",
+                    "description": "Cloud storage protocol",
+                    "type": "string",
+                    "enum": [
+                      "s3",
+                      "gcs",
+                      "azure_blob"
+                    ]
+                  },
+                  "bucket": {
+                    "type": "string",
+                    "description": "Bucket or container name",
+                    "minLength": 3,
+                    "maxLength": 63,
+                    "pattern": "^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$"
+                  },
+                  "prefix": {
+                    "type": "string",
+                    "description": "Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.",
+                    "maxLength": 512,
+                    "pattern": "^[a-zA-Z0-9/_.-]+$",
+                    "examples": [
+                      "accounts/pinnacle/adcp",
+                      "reporting/2024"
+                    ]
+                  },
+                  "region": {
+                    "type": "string",
+                    "description": "Cloud region for the bucket",
+                    "maxLength": 64,
+                    "pattern": "^[a-z0-9-]+$",
+                    "examples": [
+                      "us-east-1",
+                      "europe-west1"
+                    ]
+                  },
+                  "format": {
+                    "type": "string",
+                    "enum": [
+                      "jsonl",
+                      "csv",
+                      "parquet",
+                      "avro",
+                      "orc"
+                    ],
+                    "description": "File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).",
+                    "default": "jsonl"
+                  },
+                  "compression": {
+                    "type": "string",
+                    "enum": [
+                      "gzip",
+                      "none"
+                    ],
+                    "description": "Compression applied to delivered files",
+                    "default": "gzip"
+                  },
+                  "file_retention_days": {
+                    "type": "integer",
+                    "description": "How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.",
+                    "minimum": 1,
+                    "examples": [
+                      14,
+                      30,
+                      90
+                    ]
+                  },
+                  "setup_instructions": {
+                    "type": "string",
+                    "format": "uri",
+                    "pattern": "^https://",
+                    "description": "URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation \u2014 buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery."
+                  }
+                },
+                "required": [
+                  "protocol",
+                  "bucket",
+                  "file_retention_days"
+                ],
+                "additionalProperties": false
+              },
+              "sandbox": {
+                "type": "boolean",
+                "description": "When true, this is a sandbox account \u2014 no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "account_id",
+              "name",
+              "status"
+            ],
+            "additionalProperties": true,
+            "examples": [
+              {
+                "description": "Direct advertiser account",
+                "data": {
+                  "account_id": "acc_acme_direct",
+                  "name": "Acme",
+                  "advertiser": "Acme Corp",
+                  "brand": {
+                    "domain": "acme-corp.com"
+                  },
+                  "operator": "acme-corp.com",
+                  "status": "active",
+                  "billing": "operator",
+                  "account_scope": "brand",
+                  "rate_card": "acme_vip_2024",
+                  "payment_terms": "net_30"
+                }
+              },
+              {
+                "description": "Advertiser account with agency billing proxy",
+                "data": {
+                  "account_id": "acc_acme_pinnacle",
+                  "name": "Acme c/o Pinnacle",
+                  "advertiser": "Acme Corp",
+                  "billing_proxy": "Pinnacle Media",
+                  "brand": {
+                    "domain": "acme-corp.com"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "status": "active",
+                  "billing": "operator",
+                  "account_scope": "operator_brand",
+                  "rate_card": "acme_vip_2024",
+                  "payment_terms": "net_60"
+                }
+              },
+              {
+                "description": "Agency as direct buyer",
+                "data": {
+                  "account_id": "acc_pinnacle",
+                  "name": "Pinnacle",
+                  "advertiser": "Pinnacle Media",
+                  "brand": {
+                    "domain": "pinnacle-media.com"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "status": "active",
+                  "billing": "operator",
+                  "account_scope": "operator",
+                  "rate_card": "agency_standard",
+                  "payment_terms": "net_45"
+                }
+              },
+              {
+                "description": "Account with brand identity and operator (via sync_accounts)",
+                "data": {
+                  "account_id": "acc_spark_001",
+                  "name": "Spark (via Pinnacle)",
+                  "advertiser": "Nova Brands",
+                  "status": "active",
+                  "brand": {
+                    "domain": "nova-brands.com",
+                    "brand_id": "spark"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "billing": "agent",
+                  "account_scope": "operator_brand",
+                  "payment_terms": "net_30"
+                }
+              },
+              {
+                "description": "Pending account awaiting seller approval",
+                "data": {
+                  "account_id": "acc_glow_pending",
+                  "name": "Glow",
+                  "advertiser": "Nova Brands",
+                  "status": "pending_approval",
+                  "brand": {
+                    "domain": "nova-brands.com",
+                    "brand_id": "glow"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "billing": "operator",
+                  "account_scope": "brand"
+                }
+              },
+              {
+                "description": "Agency operates but advertiser is billed directly with structured billing entity",
+                "data": {
+                  "account_id": "acc_acme_direct_bill",
+                  "name": "Acme (billed direct)",
+                  "advertiser": "Acme Corp",
+                  "brand": {
+                    "domain": "acme-corp.com"
+                  },
+                  "operator": "pinnacle-media.com",
+                  "status": "active",
+                  "billing": "advertiser",
+                  "billing_entity": {
+                    "legal_name": "Acme Corporation GmbH",
+                    "vat_id": "DE987654321",
+                    "address": {
+                      "street": "Hauptstrasse 42",
+                      "city": "Munich",
+                      "postal_code": "80331",
+                      "country": "DE"
+                    },
+                    "contacts": [
+                      {
+                        "role": "billing",
+                        "name": "AP Department",
+                        "email": "billing@acme-corp.com"
+                      }
+                    ]
+                  },
+                  "account_scope": "operator_brand",
+                  "payment_terms": "net_30"
+                }
+              }
+            ]
+          },
+          "invoice_recipient": {
+            "title": "Business Entity",
+            "description": "Per-buy invoice recipient when provided at creation. Confirms the seller accepted the billing override. Bank details are omitted (write-only).",
+            "type": "object",
+            "properties": {
+              "legal_name": {
+                "type": "string",
+                "description": "Registered legal name of the business entity",
+                "maxLength": 200
+              },
+              "vat_id": {
+                "type": "string",
+                "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+                "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+              },
+              "tax_id": {
+                "type": "string",
+                "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+                "maxLength": 30
+              },
+              "registration_number": {
+                "type": "string",
+                "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+                "maxLength": 50
+              },
+              "address": {
+                "type": "object",
+                "description": "Postal address for invoicing and legal correspondence",
+                "properties": {
+                  "street": {
+                    "type": "string",
+                    "description": "Street address including building number",
+                    "maxLength": 200
+                  },
+                  "city": {
+                    "type": "string",
+                    "maxLength": 100
+                  },
+                  "postal_code": {
+                    "type": "string",
+                    "maxLength": 20
+                  },
+                  "region": {
+                    "type": "string",
+                    "description": "State, province, or region",
+                    "maxLength": 100
+                  },
+                  "country": {
+                    "type": "string",
+                    "description": "ISO 3166-1 alpha-2 country code",
+                    "pattern": "^[A-Z]{2}$"
+                  }
+                },
+                "required": [
+                  "street",
+                  "city",
+                  "postal_code",
+                  "country"
+                ],
+                "additionalProperties": false
+              },
+              "contacts": {
+                "type": "array",
+                "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "role": {
+                      "type": "string",
+                      "enum": [
+                        "billing",
+                        "legal",
+                        "creative",
+                        "general"
+                      ],
+                      "enumDescriptions": {
+                        "billing": "Accounts payable and invoice queries",
+                        "legal": "Contract and compliance matters",
+                        "creative": "Material submission and creative approval",
+                        "general": "Default contact when no specific role applies"
+                      },
+                      "description": "Contact's functional role in the business relationship"
+                    },
+                    "name": {
+                      "type": "string",
+                      "description": "Full name of the contact",
+                      "maxLength": 200
+                    },
+                    "email": {
+                      "type": "string",
+                      "format": "email",
+                      "maxLength": 254
+                    },
+                    "phone": {
+                      "type": "string",
+                      "maxLength": 30
+                    }
+                  },
+                  "required": [
+                    "role"
+                  ],
+                  "additionalProperties": false
+                },
+                "maxItems": 10
+              },
+              "bank": {
+                "type": "object",
+                "writeOnly": true,
+                "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+                "properties": {
+                  "account_holder": {
+                    "type": "string",
+                    "description": "Name on the bank account",
+                    "maxLength": 200
+                  },
+                  "iban": {
+                    "type": "string",
+                    "description": "International Bank Account Number (SEPA markets)",
+                    "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+                  },
+                  "bic": {
+                    "type": "string",
+                    "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+                    "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+                  },
+                  "routing_number": {
+                    "type": "string",
+                    "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+                    "maxLength": 30
+                  },
+                  "account_number": {
+                    "type": "string",
+                    "description": "Bank account number for non-SEPA markets",
+                    "maxLength": 30
+                  }
+                },
+                "required": [
+                  "account_holder"
+                ],
+                "additionalProperties": false
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "legal_name"
+            ],
+            "additionalProperties": false,
+            "examples": [
+              {
+                "description": "German agency with full B2B details",
+                "data": {
+                  "legal_name": "Pinnacle Media GmbH",
+                  "vat_id": "DE123456789",
+                  "registration_number": "HRB 12345",
+                  "address": {
+                    "street": "Friedrichstrasse 100",
+                    "city": "Berlin",
+                    "postal_code": "10117",
+                    "country": "DE"
+                  },
+                  "contacts": [
+                    {
+                      "role": "billing",
+                      "name": "Sam Adeyemi",
+                      "email": "billing@pinnacle-media.com",
+                      "phone": "+49 30 12345678"
+                    }
+                  ],
+                  "bank": {
+                    "account_holder": "Pinnacle Media GmbH",
+                    "iban": "DE89370400440532013000",
+                    "bic": "COBADEFFXXX"
+                  }
+                }
+              },
+              {
+                "description": "US advertiser with EIN and domestic bank details",
+                "data": {
+                  "legal_name": "Acme Corporation",
+                  "tax_id": "12-3456789",
+                  "address": {
+                    "street": "123 Main St",
+                    "city": "New York",
+                    "postal_code": "10001",
+                    "region": "NY",
+                    "country": "US"
+                  },
+                  "contacts": [
+                    {
+                      "role": "billing",
+                      "name": "AP Department",
+                      "email": "ap@acme-corp.com"
+                    }
+                  ],
+                  "bank": {
+                    "account_holder": "Acme Corporation",
+                    "routing_number": "021000021",
+                    "account_number": "123456789"
+                  }
+                }
+              }
+            ]
+          },
+          "status": {
+            "title": "Media Buy Status",
+            "description": "Status of a media buy.",
+            "type": "string",
+            "enum": [
+              "pending_creatives",
+              "pending_start",
+              "active",
+              "paused",
+              "completed",
+              "rejected",
+              "canceled"
+            ],
+            "enumDescriptions": {
+              "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+              "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
+              "active": "Media buy is currently running",
+              "paused": "Media buy is temporarily paused",
+              "completed": "Media buy has finished running",
+              "rejected": "Media buy was declined by the seller after creation",
+              "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+            }
+          },
+          "currency": {
+            "type": "string",
+            "description": "ISO 4217 currency code (e.g., USD, EUR, GBP) for monetary values at this media buy level. total_budget is always denominated in this currency. Package-level fields may override with package.currency.",
+            "pattern": "^[A-Z]{3}$"
+          },
+          "total_budget": {
+            "type": "number",
+            "description": "Total budget amount across all packages, denominated in media_buy.currency",
+            "minimum": 0
+          },
+          "start_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 flight start time for this media buy (earliest package start_time). Avoids requiring buyers to compute min(packages[].start_time)."
+          },
+          "end_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 flight end time for this media buy (latest package end_time). Avoids requiring buyers to compute max(packages[].end_time)."
+          },
+          "creative_deadline": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 timestamp for creative upload deadline"
+          },
+          "confirmed_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation."
+          },
+          "cancellation": {
+            "type": "object",
+            "description": "Cancellation metadata. Present only when status is 'canceled'.",
+            "required": [
+              "canceled_at",
+              "canceled_by"
+            ],
+            "properties": {
+              "canceled_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp when this media buy was canceled."
+              },
+              "canceled_by": {
+                "title": "Canceled By",
+                "description": "Which party initiated the cancellation.",
+                "type": "string",
+                "enum": [
+                  "buyer",
+                  "seller"
+                ],
+                "enumDescriptions": {
+                  "buyer": "Cancellation initiated by the buyer via update_media_buy",
+                  "seller": "Cancellation initiated by the seller (e.g., policy violation, inventory withdrawal)"
+                }
+              },
+              "reason": {
+                "type": "string",
+                "description": "Reason the media buy was canceled.",
+                "maxLength": 500
+              }
+            },
+            "additionalProperties": false
+          },
+          "revision": {
+            "type": "integer",
+            "description": "Current revision number. Pass this in update_media_buy for optimistic concurrency.",
+            "minimum": 1
+          },
+          "created_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "Creation timestamp"
+          },
+          "updated_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "Last update timestamp"
+          },
+          "valid_actions": {
+            "type": "array",
+            "description": "Actions the buyer can perform on this media buy in its current state. Eliminates the need for agents to internalize the state machine \u2014 the seller declares what is permitted right now.",
+            "items": {
+              "type": "string",
+              "enum": [
+                "pause",
+                "resume",
+                "cancel",
+                "update_budget",
+                "update_dates",
+                "update_packages",
+                "add_packages",
+                "sync_creatives"
+              ]
+            }
+          },
+          "history": {
+            "type": "array",
+            "description": "Revision history entries, most recent first. Only present when include_history > 0 in the request. Each entry represents a state change or update to the media buy. Entries are append-only: sellers MUST NOT modify or delete previously emitted history entries. Callers MAY cache entries by revision number. Returns min(N, available entries) when include_history exceeds the total.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "revision": {
+                  "type": "integer",
+                  "description": "Revision number after this change was applied.",
+                  "minimum": 1
+                },
+                "timestamp": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this change occurred."
+                },
+                "actor": {
+                  "type": "string",
+                  "description": "Identity of who made the change \u2014 derived from authentication context, not caller-provided. Format is seller-defined (e.g., agent URL, user email, API key label)."
+                },
+                "action": {
+                  "type": "string",
+                  "description": "What happened. Standard actions: created, activated, paused, resumed, canceled, rejected, completed, updated_budget, updated_dates, updated_packages, package_canceled, package_paused, package_resumed. Sellers MAY use additional platform-specific actions (e.g., creative_approved, targeting_updated) \u2014 use ext on the history entry for structured metadata about custom actions."
+                },
+                "summary": {
+                  "type": "string",
+                  "description": "Human-readable summary of the change (e.g., 'Budget increased from $5,000 to $7,500 on pkg_abc').",
+                  "maxLength": 500
+                },
+                "package_id": {
+                  "type": "string",
+                  "description": "Package affected, when the change targeted a specific package."
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "revision",
+                "timestamp",
+                "action"
+              ],
+              "additionalProperties": true
+            }
+          },
+          "packages": {
+            "type": "array",
+            "description": "Packages within this media buy, augmented with creative approval status and optional delivery snapshots",
+            "items": {
+              "title": "PackageStatus",
+              "description": "Current status of a package within a media buy \u2014 includes creative approval state and optional delivery snapshot. For the creation input shape, see PackageRequest. For the creation output shape, see Package.",
+              "type": "object",
+              "properties": {
+                "package_id": {
+                  "type": "string",
+                  "description": "Seller's package identifier"
+                },
+                "product_id": {
+                  "type": "string",
+                  "description": "Product identifier this package is purchased from"
+                },
+                "budget": {
+                  "type": "number",
+                  "description": "Package budget amount, denominated in package.currency when present, otherwise media_buy.currency",
+                  "minimum": 0
+                },
+                "currency": {
+                  "type": "string",
+                  "description": "ISO 4217 currency code for monetary values at this package level (budget, bid_price, snapshot.spend). When absent, inherit media_buy.currency.",
+                  "pattern": "^[A-Z]{3}$"
+                },
+                "bid_price": {
+                  "type": "number",
+                  "description": "Current bid price for auction-based packages. Denominated in package.currency when present, otherwise media_buy.currency. Relevant for automated price optimization loops.",
+                  "minimum": 0
+                },
+                "impressions": {
+                  "type": "number",
+                  "description": "Goal impression count for impression-based packages",
+                  "minimum": 0
+                },
+                "start_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "ISO 8601 flight start time for this package. Use to determine whether the package is within its scheduled flight before interpreting delivery status."
+                },
+                "end_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "ISO 8601 flight end time for this package"
+                },
+                "paused": {
+                  "type": "boolean",
+                  "description": "Whether this package is currently paused by the buyer"
+                },
+                "canceled": {
+                  "type": "boolean",
+                  "description": "Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated."
+                },
+                "cancellation": {
+                  "type": "object",
+                  "description": "Cancellation metadata. Present only when canceled is true.",
+                  "required": [
+                    "canceled_at",
+                    "canceled_by"
+                  ],
+                  "properties": {
+                    "canceled_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "ISO 8601 timestamp when this package was canceled."
+                    },
+                    "canceled_by": {
+                      "title": "Canceled By",
+                      "description": "Which party initiated the package cancellation.",
+                      "type": "string",
+                      "enum": [
+                        "buyer",
+                        "seller"
+                      ],
+                      "enumDescriptions": {
+                        "buyer": "Cancellation initiated by the buyer via update_media_buy",
+                        "seller": "Cancellation initiated by the seller (e.g., policy violation, inventory withdrawal)"
+                      }
+                    },
+                    "reason": {
+                      "type": "string",
+                      "description": "Reason the package was canceled.",
+                      "maxLength": 500
+                    }
+                  },
+                  "additionalProperties": false
+                },
+                "creative_deadline": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
+                },
+                "creative_approvals": {
+                  "type": "array",
+                  "description": "Approval status for each creative assigned to this package. Absent when no creatives have been assigned.",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "creative_id": {
+                        "type": "string",
+                        "description": "Creative identifier"
+                      },
+                      "approval_status": {
+                        "title": "Creative Approval Status",
+                        "description": "Approval state of a creative on a specific package",
+                        "type": "string",
+                        "enum": [
+                          "pending_review",
+                          "approved",
+                          "rejected"
+                        ],
+                        "enumDescriptions": {
+                          "pending_review": "Creative has been submitted and is awaiting platform review",
+                          "approved": "Creative has been approved and is eligible for delivery",
+                          "rejected": "Creative was rejected by the platform, including change requests; see rejection_reason for required fixes and re-upload via sync_creatives"
+                        }
+                      },
+                      "rejection_reason": {
+                        "type": "string",
+                        "description": "Human-readable explanation of why the creative was rejected. Present only when approval_status is 'rejected'."
+                      }
+                    },
+                    "required": [
+                      "creative_id",
+                      "approval_status"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "format_ids_pending": {
+                  "type": "array",
+                  "description": "Format IDs from the original create_media_buy format_ids_to_provide that have not yet been uploaded via sync_creatives. When empty or absent, all required formats have been provided.",
+                  "items": {
+                    "title": "Format ID",
+                    "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  }
+                },
+                "snapshot_unavailable_reason": {
+                  "type": "string",
+                  "description": "Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot is unavailable for this package.",
+                  "enum": [
+                    "SNAPSHOT_UNSUPPORTED",
+                    "SNAPSHOT_TEMPORARILY_UNAVAILABLE",
+                    "SNAPSHOT_PERMISSION_DENIED"
+                  ]
+                },
+                "snapshot": {
+                  "type": "object",
+                  "description": "Near-real-time delivery snapshot for this package. Only present when include_snapshot was true in the request. Represents the latest available entity-level stats from the platform \u2014 not billing-grade data.",
+                  "properties": {
+                    "as_of": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "ISO 8601 timestamp when this snapshot was captured by the platform"
+                    },
+                    "staleness_seconds": {
+                      "type": "integer",
+                      "description": "Maximum age of this data in seconds. For example, 900 means the data may be up to 15 minutes old. Use this to interpret zero delivery: a value of 900 means zero impressions is likely real; a value of 14400 means reporting may still be catching up.",
+                      "minimum": 0
+                    },
+                    "impressions": {
+                      "type": "number",
+                      "description": "Total impressions delivered since package start",
+                      "minimum": 0
+                    },
+                    "spend": {
+                      "type": "number",
+                      "description": "Total spend since package start, denominated in snapshot.currency when present, otherwise package.currency or media_buy.currency",
+                      "minimum": 0
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code for spend in this snapshot. Optional when unchanged from package.currency or media_buy.currency.",
+                      "pattern": "^[A-Z]{3}$"
+                    },
+                    "clicks": {
+                      "type": "number",
+                      "description": "Total clicks since package start (when available)",
+                      "minimum": 0
+                    },
+                    "pacing_index": {
+                      "type": "number",
+                      "description": "Current delivery pace relative to expected (1.0 = on track, <1.0 = behind, >1.0 = ahead). Absent when pacing cannot be determined.",
+                      "minimum": 0
+                    },
+                    "delivery_status": {
+                      "type": "string",
+                      "description": "Operational delivery state of this package. 'not_delivering' means the package is within its scheduled flight but has delivered zero impressions for at least one full staleness cycle \u2014 the signal for automated price adjustments or buyer alerts. Implementers must not return 'not_delivering' until at least staleness_seconds have elapsed since package activation.",
+                      "enum": [
+                        "delivering",
+                        "not_delivering",
+                        "completed",
+                        "budget_exhausted",
+                        "flight_ended",
+                        "goal_met"
+                      ]
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Optional extension object for seller-specific snapshot fields.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "as_of",
+                    "staleness_seconds",
+                    "impressions",
+                    "spend"
+                  ],
+                  "additionalProperties": true
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "package_id"
+              ],
+              "additionalProperties": true
+            }
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "media_buy_id",
+          "status",
+          "currency",
+          "total_budget",
+          "packages"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors (e.g., media buy not found)",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Pagination metadata for the media_buys array.",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "media_buys"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.386Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/get-products-request.json b/schemas/cache/bundled/media-buy/get-products-request.json
new file mode 100644
index 000000000..cede980cd
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/get-products-request.json
@@ -0,0 +1,1902 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Products Request",
+  "description": "Request parameters for discovering or refining advertising products. buying_mode declares the buyer's intent: 'brief' for curated discovery, 'wholesale' for raw catalog access, or 'refine' to iterate on known products and proposals.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "buying_mode": {
+      "type": "string",
+      "enum": [
+        "brief",
+        "wholesale",
+        "refine"
+      ],
+      "description": "Declares buyer intent for this request. 'brief': publisher curates product recommendations from the provided brief. 'wholesale': buyer requests raw inventory to apply their own audiences \u2014 brief must not be provided, and proposals are omitted. 'refine': iterate on products and proposals from a previous get_products response using the refine array of change requests. v3 clients MUST include buying_mode. Sellers receiving requests from pre-v3 clients without buying_mode SHOULD default to 'brief'."
+    },
+    "brief": {
+      "type": "string",
+      "description": "Natural language description of campaign requirements. Required when buying_mode is 'brief'. Must not be provided when buying_mode is 'wholesale' or 'refine'."
+    },
+    "refine": {
+      "type": "array",
+      "description": "Array of change requests for iterating on products and proposals from a previous get_products response. Each entry declares a scope (request, product, or proposal) and what the buyer is asking for. Only valid when buying_mode is 'refine'. The seller responds to each entry via refinement_applied in the response, matched by position.",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "oneOf": [
+          {
+            "properties": {
+              "scope": {
+                "type": "string",
+                "const": "request",
+                "description": "Change scoped to the overall request \u2014 direction for the selection as a whole."
+              },
+              "ask": {
+                "type": "string",
+                "minLength": 1,
+                "description": "What the buyer is asking for at the request level (e.g., 'more video options and less display', 'suggest how to combine these products')."
+              }
+            },
+            "required": [
+              "scope",
+              "ask"
+            ],
+            "additionalProperties": false
+          },
+          {
+            "properties": {
+              "scope": {
+                "type": "string",
+                "const": "product",
+                "description": "Change scoped to a specific product."
+              },
+              "id": {
+                "type": "string",
+                "minLength": 1,
+                "description": "Product ID from a previous get_products response."
+              },
+              "action": {
+                "type": "string",
+                "enum": [
+                  "include",
+                  "omit",
+                  "more_like_this"
+                ],
+                "description": "'include': return this product with updated pricing and data. 'omit': exclude this product from the response. 'more_like_this': find additional products similar to this one (the original is also returned)."
+              },
+              "ask": {
+                "type": "string",
+                "minLength": 1,
+                "description": "What the buyer is asking for on this product. For 'include': specific changes to request (e.g., 'add 16:9 format'). For 'more_like_this': what 'similar' means (e.g., 'same audience but video format'). Ignored when action is 'omit'."
+              }
+            },
+            "required": [
+              "scope",
+              "id",
+              "action"
+            ],
+            "additionalProperties": false
+          },
+          {
+            "properties": {
+              "scope": {
+                "type": "string",
+                "const": "proposal",
+                "description": "Change scoped to a specific proposal."
+              },
+              "id": {
+                "type": "string",
+                "minLength": 1,
+                "description": "Proposal ID from a previous get_products response."
+              },
+              "action": {
+                "type": "string",
+                "enum": [
+                  "include",
+                  "omit",
+                  "finalize"
+                ],
+                "description": "'include': return this proposal with updated allocations and pricing. 'omit': exclude this proposal from the response. 'finalize': request firm pricing and inventory hold \u2014 transitions a draft proposal to committed with an expires_at hold window. May trigger seller-side approval (HITL). The buyer should not set a time_budget for finalize requests \u2014 they represent a commitment to wait for the result."
+              },
+              "ask": {
+                "type": "string",
+                "minLength": 1,
+                "description": "What the buyer is asking for on this proposal (e.g., 'shift more budget toward video', 'reduce total by 10%'). Ignored when action is 'omit'."
+              }
+            },
+            "required": [
+              "scope",
+              "id",
+              "action"
+            ],
+            "additionalProperties": false
+          }
+        ]
+      }
+    },
+    "brand": {
+      "title": "Brand Reference",
+      "description": "Brand reference for product discovery context. Resolved to full brand identity at execution time.",
+      "type": "object",
+      "properties": {
+        "domain": {
+          "type": "string",
+          "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
+        "brand_id": {
+          "title": "Brand ID",
+          "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+          "type": "string",
+          "pattern": "^[a-z0-9_]+$",
+          "examples": [
+            "tide",
+            "cheerios",
+            "air_jordan",
+            "nike",
+            "pampers"
+          ]
+        }
+      },
+      "required": [
+        "domain"
+      ],
+      "additionalProperties": false,
+      "examples": [
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "spark"
+        },
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "glow"
+        },
+        {
+          "domain": "acme-corp.com"
+        }
+      ]
+    },
+    "catalog": {
+      "title": "Catalog",
+      "description": "Catalog of items the buyer wants to promote. The seller matches catalog items against its inventory and returns products where matches exist. Supports all catalog types: a job catalog finds job ad products, a product catalog finds sponsored product slots. Reference a synced catalog by catalog_id, or provide inline items.",
+      "type": "object",
+      "properties": {
+        "catalog_id": {
+          "type": "string",
+          "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        },
+        "name": {
+          "type": "string",
+          "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        },
+        "type": {
+          "title": "Catalog Type",
+          "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+          "type": "string",
+          "enum": [
+            "offering",
+            "product",
+            "inventory",
+            "store",
+            "promotion",
+            "hotel",
+            "flight",
+            "job",
+            "vehicle",
+            "real_estate",
+            "education",
+            "destination",
+            "app"
+          ]
+        },
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        },
+        "feed_format": {
+          "title": "Feed Format",
+          "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+          "type": "string",
+          "enum": [
+            "google_merchant_center",
+            "facebook_catalog",
+            "shopify",
+            "linkedin_jobs",
+            "custom"
+          ]
+        },
+        "update_frequency": {
+          "title": "Update Frequency",
+          "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+          "type": "string",
+          "enum": [
+            "realtime",
+            "hourly",
+            "daily",
+            "weekly"
+          ]
+        },
+        "items": {
+          "type": "array",
+          "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+          "items": {
+            "type": "object"
+          },
+          "minItems": 1
+        },
+        "ids": {
+          "type": "array",
+          "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "gtins": {
+          "type": "array",
+          "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+          "items": {
+            "type": "string",
+            "pattern": "^[0-9]{8,14}$"
+          },
+          "minItems": 1
+        },
+        "tags": {
+          "type": "array",
+          "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "category": {
+          "type": "string",
+          "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        },
+        "query": {
+          "type": "string",
+          "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        },
+        "conversion_events": {
+          "type": "array",
+          "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+          "items": {
+            "title": "Event Type",
+            "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+            "type": "string",
+            "enum": [
+              "page_view",
+              "view_content",
+              "select_content",
+              "select_item",
+              "search",
+              "share",
+              "add_to_cart",
+              "remove_from_cart",
+              "viewed_cart",
+              "add_to_wishlist",
+              "initiate_checkout",
+              "add_payment_info",
+              "purchase",
+              "refund",
+              "lead",
+              "qualify_lead",
+              "close_convert_lead",
+              "disqualify_lead",
+              "complete_registration",
+              "subscribe",
+              "start_trial",
+              "app_install",
+              "app_launch",
+              "contact",
+              "schedule",
+              "donate",
+              "submit_application",
+              "custom"
+            ],
+            "enumDescriptions": {
+              "page_view": "User viewed a page",
+              "view_content": "User viewed specific content (product, article, etc.)",
+              "select_content": "User selected or clicked on content (article, video, etc.)",
+              "select_item": "User selected a specific product or item from a list",
+              "search": "User performed a search",
+              "share": "User shared content via social or messaging",
+              "add_to_cart": "User added an item to cart",
+              "remove_from_cart": "User removed an item from cart",
+              "viewed_cart": "User viewed their shopping cart",
+              "add_to_wishlist": "User added an item to a wishlist",
+              "initiate_checkout": "User started checkout process",
+              "add_payment_info": "User added payment information",
+              "purchase": "User completed a purchase",
+              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+              "lead": "User expressed interest (form submission, signup, etc.)",
+              "qualify_lead": "Lead qualified by sales or scoring criteria",
+              "close_convert_lead": "Lead converted to a customer or closed deal",
+              "disqualify_lead": "Lead disqualified or marked as not viable",
+              "complete_registration": "User completed account registration",
+              "subscribe": "User subscribed to a service or newsletter",
+              "start_trial": "User started a free trial",
+              "app_install": "User installed an application",
+              "app_launch": "User launched an application",
+              "contact": "User initiated contact (call, message, etc.)",
+              "schedule": "User scheduled an appointment or event",
+              "donate": "User made a donation",
+              "submit_application": "User submitted an application (loan, job, etc.)",
+              "custom": "Custom event type (specify in custom_event_name)"
+            }
+          },
+          "minItems": 1,
+          "uniqueItems": true
+        },
+        "content_id_type": {
+          "title": "Content ID Type",
+          "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+          "type": "string",
+          "enum": [
+            "sku",
+            "gtin",
+            "offering_id",
+            "job_id",
+            "hotel_id",
+            "flight_id",
+            "vehicle_id",
+            "listing_id",
+            "store_id",
+            "program_id",
+            "destination_id",
+            "app_id"
+          ]
+        },
+        "feed_field_mappings": {
+          "type": "array",
+          "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+          "items": {
+            "title": "Catalog Field Mapping",
+            "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+            "type": "object",
+            "properties": {
+              "feed_field": {
+                "type": "string",
+                "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+              },
+              "catalog_field": {
+                "type": "string",
+                "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+              },
+              "asset_group_id": {
+                "type": "string",
+                "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+              },
+              "value": {
+                "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+              },
+              "transform": {
+                "type": "string",
+                "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                "enum": [
+                  "date",
+                  "divide",
+                  "boolean",
+                  "split"
+                ]
+              },
+              "format": {
+                "type": "string",
+                "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+              },
+              "timezone": {
+                "type": "string",
+                "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+              },
+              "by": {
+                "type": "number",
+                "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                "exclusiveMinimum": 0
+              },
+              "separator": {
+                "type": "string",
+                "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                "default": ","
+              },
+              "default": {
+                "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "allOf": [
+              {
+                "not": {
+                  "required": [
+                    "feed_field",
+                    "value"
+                  ]
+                }
+              },
+              {
+                "not": {
+                  "required": [
+                    "catalog_field",
+                    "asset_group_id"
+                  ]
+                }
+              }
+            ],
+            "additionalProperties": true,
+            "examples": [
+              {
+                "description": "Simple field rename",
+                "data": {
+                  "feed_field": "hotel_name",
+                  "catalog_field": "name"
+                }
+              },
+              {
+                "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                "data": {
+                  "feed_field": "available_from",
+                  "catalog_field": "valid_from",
+                  "transform": "date",
+                  "format": "YYYYMMDD",
+                  "timezone": "UTC"
+                }
+              },
+              {
+                "description": "Divide cents to dollars",
+                "data": {
+                  "feed_field": "price_cents",
+                  "catalog_field": "price.amount",
+                  "transform": "divide",
+                  "by": 100
+                }
+              },
+              {
+                "description": "Static literal injection \u2014 currency not in feed",
+                "data": {
+                  "catalog_field": "price.currency",
+                  "value": "USD"
+                }
+              },
+              {
+                "description": "Image URL assigned to typed asset pool",
+                "data": {
+                  "feed_field": "primary_photo_url",
+                  "asset_group_id": "images_landscape"
+                }
+              },
+              {
+                "description": "Vertical photo URL assigned to vertical pool",
+                "data": {
+                  "feed_field": "portrait_photo_url",
+                  "asset_group_id": "images_vertical"
+                }
+              },
+              {
+                "description": "Split comma-separated tags to array",
+                "data": {
+                  "feed_field": "amenity_list",
+                  "catalog_field": "amenities",
+                  "transform": "split",
+                  "separator": ","
+                }
+              },
+              {
+                "description": "Boolean coercion with default",
+                "data": {
+                  "feed_field": "is_available",
+                  "catalog_field": "available",
+                  "transform": "boolean",
+                  "default": false
+                }
+              }
+            ]
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "type"
+      ],
+      "additionalProperties": true,
+      "examples": [
+        {
+          "description": "Synced product catalog from Google Merchant Center",
+          "data": {
+            "catalog_id": "gmc-primary",
+            "name": "Primary Product Feed",
+            "type": "product",
+            "url": "https://feeds.acmecorp.com/products.xml",
+            "feed_format": "google_merchant_center",
+            "update_frequency": "daily"
+          }
+        },
+        {
+          "description": "Inventory feed for store-level stock data",
+          "data": {
+            "catalog_id": "store-inventory",
+            "name": "Store Inventory",
+            "type": "inventory",
+            "url": "https://feeds.acmecorp.com/inventory.json",
+            "feed_format": "custom",
+            "update_frequency": "hourly"
+          }
+        },
+        {
+          "description": "Store locator feed",
+          "data": {
+            "catalog_id": "retail-locations",
+            "name": "Retail Locations",
+            "type": "store",
+            "url": "https://feeds.acmecorp.com/stores.json",
+            "feed_format": "custom",
+            "update_frequency": "weekly"
+          }
+        },
+        {
+          "description": "Promotional pricing feed",
+          "data": {
+            "catalog_id": "summer-sale",
+            "name": "Summer Sale Promotions",
+            "type": "promotion",
+            "url": "https://feeds.acmecorp.com/promotions.json",
+            "feed_format": "google_merchant_center",
+            "update_frequency": "daily"
+          }
+        },
+        {
+          "description": "Inline offering catalog (no sync needed)",
+          "data": {
+            "type": "offering",
+            "items": [
+              {
+                "offering_id": "summer-sale",
+                "name": "Summer Sale",
+                "landing_url": "https://acme.com/summer"
+              }
+            ]
+          }
+        },
+        {
+          "description": "Reference to a previously synced catalog by ID",
+          "data": {
+            "catalog_id": "gmc-primary",
+            "type": "product",
+            "ids": [
+              "SKU-12345",
+              "SKU-67890"
+            ]
+          }
+        },
+        {
+          "description": "Product catalog with GTIN cross-retailer matching and attribution",
+          "data": {
+            "type": "product",
+            "gtins": [
+              "00013000006040",
+              "00013000006057"
+            ],
+            "content_id_type": "gtin",
+            "conversion_events": [
+              "purchase",
+              "add_to_cart"
+            ]
+          }
+        },
+        {
+          "description": "Inline store catalog with catchment areas",
+          "data": {
+            "catalog_id": "retail-locations",
+            "name": "Retail Locations",
+            "type": "store",
+            "items": [
+              {
+                "store_id": "amsterdam-flagship",
+                "name": "Amsterdam Flagship",
+                "location": {
+                  "lat": 52.3676,
+                  "lng": 4.9041
+                },
+                "catchments": [
+                  {
+                    "catchment_id": "walk",
+                    "travel_time": {
+                      "value": 10,
+                      "unit": "min"
+                    },
+                    "transport_mode": "walking"
+                  },
+                  {
+                    "catchment_id": "drive",
+                    "travel_time": {
+                      "value": 15,
+                      "unit": "min"
+                    },
+                    "transport_mode": "driving"
+                  }
+                ]
+              }
+            ]
+          }
+        }
+      ]
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account for product lookup. Returns products with pricing specific to this account's rate card.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "preferred_delivery_types": {
+      "type": "array",
+      "description": "Delivery types the buyer prefers, in priority order. Unlike filters.delivery_type which excludes non-matching products, this signals preference for curation \u2014 the publisher may still include other delivery types when they match the brief well.",
+      "items": {
+        "title": "Delivery Type",
+        "description": "Type of inventory delivery",
+        "type": "string",
+        "enum": [
+          "guaranteed",
+          "non_guaranteed"
+        ],
+        "enumDescriptions": {
+          "guaranteed": "Reserved inventory with guaranteed delivery",
+          "non_guaranteed": "Auction-based inventory without delivery guarantees"
+        }
+      },
+      "minItems": 1,
+      "uniqueItems": true
+    },
+    "filters": {
+      "title": "Product Filters",
+      "description": "Structured filters for product discovery",
+      "type": "object",
+      "properties": {
+        "delivery_type": {
+          "title": "Delivery Type",
+          "description": "Type of inventory delivery",
+          "type": "string",
+          "enum": [
+            "guaranteed",
+            "non_guaranteed"
+          ],
+          "enumDescriptions": {
+            "guaranteed": "Reserved inventory with guaranteed delivery",
+            "non_guaranteed": "Auction-based inventory without delivery guarantees"
+          }
+        },
+        "exclusivity": {
+          "title": "Exclusivity",
+          "description": "Filter by exclusivity level. Returns products matching the specified exclusivity (e.g., 'exclusive' returns only sole-sponsorship products).",
+          "type": "string",
+          "enum": [
+            "none",
+            "category",
+            "exclusive"
+          ],
+          "enumDescriptions": {
+            "none": "No exclusivity \u2014 multiple advertisers can buy this product simultaneously",
+            "category": "Category-exclusive \u2014 only one advertiser per industry category (e.g., one auto brand per collection sponsorship)",
+            "exclusive": "Sole sponsorship \u2014 only one advertiser can buy this product"
+          }
+        },
+        "is_fixed_price": {
+          "type": "boolean",
+          "description": "Filter by pricing availability: true = products offering fixed pricing (at least one option with fixed_price), false = products offering auction pricing (at least one option without fixed_price). Products with both fixed and auction options match both true and false."
+        },
+        "format_ids": {
+          "type": "array",
+          "description": "Filter by specific format IDs",
+          "items": {
+            "title": "Format ID",
+            "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "minItems": 1
+        },
+        "standard_formats_only": {
+          "type": "boolean",
+          "description": "Only return products accepting IAB standard formats"
+        },
+        "min_exposures": {
+          "type": "integer",
+          "description": "Minimum exposures/impressions needed for measurement validity",
+          "minimum": 1
+        },
+        "start_date": {
+          "type": "string",
+          "format": "date",
+          "description": "Campaign start date (ISO 8601 date format: YYYY-MM-DD) for availability checks"
+        },
+        "end_date": {
+          "type": "string",
+          "format": "date",
+          "description": "Campaign end date (ISO 8601 date format: YYYY-MM-DD) for availability checks"
+        },
+        "budget_range": {
+          "type": "object",
+          "description": "Budget range to filter appropriate products",
+          "properties": {
+            "min": {
+              "type": "number",
+              "description": "Minimum budget amount",
+              "minimum": 0
+            },
+            "max": {
+              "type": "number",
+              "description": "Maximum budget amount",
+              "minimum": 0
+            },
+            "currency": {
+              "type": "string",
+              "description": "ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')",
+              "pattern": "^[A-Z]{3}$"
+            }
+          },
+          "required": [
+            "currency"
+          ],
+          "anyOf": [
+            {
+              "required": [
+                "min"
+              ]
+            },
+            {
+              "required": [
+                "max"
+              ]
+            }
+          ],
+          "additionalProperties": true
+        },
+        "countries": {
+          "type": "array",
+          "description": "Filter by country coverage using ISO 3166-1 alpha-2 codes (e.g., ['US', 'CA', 'GB']). Works for all inventory types.",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          },
+          "minItems": 1
+        },
+        "regions": {
+          "type": "array",
+          "description": "Filter by region coverage using ISO 3166-2 codes (e.g., ['US-NY', 'US-CA', 'GB-SCT']). Use for locally-bound inventory (regional OOH, local TV) where products have region-specific coverage.",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}-[A-Z0-9]+$"
+          },
+          "minItems": 1
+        },
+        "metros": {
+          "type": "array",
+          "description": "Filter by metro coverage for locally-bound inventory (radio, DOOH, local TV). Use when products have DMA/metro-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "system": {
+                "title": "Metro Area System",
+                "description": "Metro classification system",
+                "type": "string",
+                "enum": [
+                  "nielsen_dma",
+                  "uk_itl1",
+                  "uk_itl2",
+                  "eurostat_nuts2",
+                  "custom"
+                ]
+              },
+              "code": {
+                "type": "string",
+                "description": "Metro code within the system (e.g., '501' for NYC DMA)"
+              }
+            },
+            "required": [
+              "system",
+              "code"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "channels": {
+          "type": "array",
+          "description": "Filter by advertising channels (e.g., ['display', 'ctv', 'dooh'])",
+          "items": {
+            "title": "Media Channel",
+            "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+            "type": "string",
+            "enum": [
+              "display",
+              "olv",
+              "social",
+              "search",
+              "ctv",
+              "linear_tv",
+              "radio",
+              "streaming_audio",
+              "podcast",
+              "dooh",
+              "ooh",
+              "print",
+              "cinema",
+              "email",
+              "gaming",
+              "retail_media",
+              "influencer",
+              "affiliate",
+              "product_placement",
+              "sponsored_intelligence"
+            ],
+            "enumDescriptions": {
+              "display": "Digital display advertising (banners, native, rich media) across web and app",
+              "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+              "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+              "search": "Search engine advertising and search networks",
+              "ctv": "Connected TV and streaming on television screens",
+              "linear_tv": "Traditional broadcast and cable television",
+              "radio": "Traditional AM/FM radio broadcast",
+              "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+              "podcast": "Podcast advertising (host-read or dynamically inserted)",
+              "dooh": "Digital out-of-home screens in public spaces",
+              "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+              "print": "Newspapers, magazines, and other print publications",
+              "cinema": "Movie theater advertising",
+              "email": "Email advertising and sponsored newsletter content",
+              "gaming": "In-game advertising across platforms",
+              "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+              "influencer": "Creator and influencer marketing partnerships",
+              "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+              "product_placement": "Product placement, branded content, and sponsorship integrations",
+              "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+            }
+          },
+          "minItems": 1
+        },
+        "required_axe_integrations": {
+          "type": "array",
+          "description": "Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.",
+          "deprecated": true,
+          "items": {
+            "type": "string",
+            "format": "uri"
+          },
+          "minItems": 1
+        },
+        "trusted_match": {
+          "type": "object",
+          "description": "Filter products by Trusted Match Protocol capabilities. Only products with matching TMP support are returned.",
+          "properties": {
+            "providers": {
+              "type": "array",
+              "description": "Filter to products with specific TMP providers and match types. Each entry identifies a provider by agent_url and optionally requires specific match capabilities. Products must match at least one entry.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Provider's agent URL from the registry."
+                  },
+                  "context_match": {
+                    "type": "boolean",
+                    "description": "When true, require this provider to support context match."
+                  },
+                  "identity_match": {
+                    "type": "boolean",
+                    "description": "When true, require this provider to support identity match."
+                  }
+                },
+                "required": [
+                  "agent_url"
+                ],
+                "additionalProperties": true
+              },
+              "minItems": 1
+            },
+            "response_types": {
+              "type": "array",
+              "description": "Filter to products supporting specific TMP response types (e.g., 'activation', 'creative', 'catalog_items'). Products must support at least one of the listed types.",
+              "items": {
+                "title": "TMP Response Type",
+                "description": "What the publisher wants back from a TMP context match. Determines the richness level of the buyer's offer response.",
+                "type": "string",
+                "enum": [
+                  "activation",
+                  "catalog_items",
+                  "creative",
+                  "deal"
+                ],
+                "enumDescriptions": {
+                  "activation": "Binary activation with GAM key-values. Offers identify the package via package_id.",
+                  "catalog_items": "Preferred catalog items for rendering. Offers may include catalog item references.",
+                  "creative": "Inline creative manifest. Offers include full rendering details.",
+                  "deal": "Deal ID for programmatic execution. Offers include deal metadata."
+                }
+              },
+              "minItems": 1
+            }
+          },
+          "additionalProperties": false
+        },
+        "required_features": {
+          "title": "Media Buy Features",
+          "description": "Filter to products from sellers supporting specific protocol features. Only features set to true are used for filtering.",
+          "type": "object",
+          "properties": {
+            "inline_creative_management": {
+              "type": "boolean",
+              "description": "Supports creatives provided inline in create_media_buy requests"
+            },
+            "property_list_filtering": {
+              "type": "boolean",
+              "description": "Honors property_list parameter in get_products to filter results to buyer-approved properties"
+            },
+            "catalog_management": {
+              "type": "boolean",
+              "description": "Supports sync_catalogs task for catalog feed management with platform review and approval"
+            }
+          },
+          "additionalProperties": {
+            "type": "boolean"
+          }
+        },
+        "required_geo_targeting": {
+          "type": "array",
+          "description": "Filter to products from sellers supporting specific geo targeting capabilities. Each entry specifies a targeting level (country, region, metro, postal_area) and optionally a system for levels that have multiple classification systems.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "level": {
+                "title": "Geographic Targeting Level",
+                "description": "Geographic targeting level (country, region, metro, postal_area)",
+                "type": "string",
+                "enum": [
+                  "country",
+                  "region",
+                  "metro",
+                  "postal_area"
+                ]
+              },
+              "system": {
+                "type": "string",
+                "description": "Classification system within the level. Required for metro (e.g., 'nielsen_dma') and postal_area (e.g., 'us_zip'). Not applicable for country/region which use ISO standards."
+              }
+            },
+            "required": [
+              "level"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "signal_targeting": {
+          "type": "array",
+          "description": "Filter to products supporting specific signals from data provider catalogs. Products must have the requested signals in their data_provider_signals and signal_targeting_allowed must be true (or all signals requested).",
+          "items": {
+            "title": "Signal Targeting",
+            "description": "Targeting constraint for a specific signal. Uses value_type as discriminator to determine the targeting expression format.",
+            "discriminator": {
+              "propertyName": "value_type"
+            },
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "Binary signal targeting - user either matches or doesn't",
+                "properties": {
+                  "signal_id": {
+                    "title": "Signal ID",
+                    "description": "The signal to target",
+                    "discriminator": {
+                      "propertyName": "source"
+                    },
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+                        "properties": {
+                          "source": {
+                            "type": "string",
+                            "const": "catalog",
+                            "description": "Discriminator indicating this signal is from a data provider's published catalog"
+                          },
+                          "data_provider_domain": {
+                            "type": "string",
+                            "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+                          }
+                        },
+                        "required": [
+                          "source",
+                          "data_provider_domain",
+                          "id"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+                        "properties": {
+                          "source": {
+                            "type": "string",
+                            "const": "agent",
+                            "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+                          },
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+                          }
+                        },
+                        "required": [
+                          "source",
+                          "agent_url",
+                          "id"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  "value_type": {
+                    "type": "string",
+                    "const": "binary",
+                    "description": "Discriminator for binary signals"
+                  },
+                  "value": {
+                    "type": "boolean",
+                    "description": "Whether to include (true) or exclude (false) users matching this signal"
+                  }
+                },
+                "required": [
+                  "signal_id",
+                  "value_type",
+                  "value"
+                ],
+                "additionalProperties": true
+              },
+              {
+                "type": "object",
+                "description": "Categorical signal targeting - target users with specific values",
+                "properties": {
+                  "signal_id": {
+                    "title": "Signal ID",
+                    "description": "The signal to target",
+                    "discriminator": {
+                      "propertyName": "source"
+                    },
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+                        "properties": {
+                          "source": {
+                            "type": "string",
+                            "const": "catalog",
+                            "description": "Discriminator indicating this signal is from a data provider's published catalog"
+                          },
+                          "data_provider_domain": {
+                            "type": "string",
+                            "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+                          }
+                        },
+                        "required": [
+                          "source",
+                          "data_provider_domain",
+                          "id"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+                        "properties": {
+                          "source": {
+                            "type": "string",
+                            "const": "agent",
+                            "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+                          },
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+                          }
+                        },
+                        "required": [
+                          "source",
+                          "agent_url",
+                          "id"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  "value_type": {
+                    "type": "string",
+                    "const": "categorical",
+                    "description": "Discriminator for categorical signals"
+                  },
+                  "values": {
+                    "type": "array",
+                    "description": "Values to target. Users with any of these values will be included.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "signal_id",
+                  "value_type",
+                  "values"
+                ],
+                "additionalProperties": true
+              },
+              {
+                "type": "object",
+                "description": "Numeric signal targeting - target users within a value range. If min_value is provided, it must be <= max_value. Values should be within the signal's defined range (see signal definition).",
+                "properties": {
+                  "signal_id": {
+                    "title": "Signal ID",
+                    "description": "The signal to target",
+                    "discriminator": {
+                      "propertyName": "source"
+                    },
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+                        "properties": {
+                          "source": {
+                            "type": "string",
+                            "const": "catalog",
+                            "description": "Discriminator indicating this signal is from a data provider's published catalog"
+                          },
+                          "data_provider_domain": {
+                            "type": "string",
+                            "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+                          }
+                        },
+                        "required": [
+                          "source",
+                          "data_provider_domain",
+                          "id"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+                        "properties": {
+                          "source": {
+                            "type": "string",
+                            "const": "agent",
+                            "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+                          },
+                          "agent_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+                          },
+                          "id": {
+                            "type": "string",
+                            "pattern": "^[a-zA-Z0-9_-]+$",
+                            "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+                          }
+                        },
+                        "required": [
+                          "source",
+                          "agent_url",
+                          "id"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  "value_type": {
+                    "type": "string",
+                    "const": "numeric",
+                    "description": "Discriminator for numeric signals"
+                  },
+                  "min_value": {
+                    "type": "number",
+                    "description": "Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided. Should be >= signal's range.min if defined."
+                  },
+                  "max_value": {
+                    "type": "number",
+                    "description": "Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided. Should be <= signal's range.max if defined."
+                  }
+                },
+                "required": [
+                  "signal_id",
+                  "value_type"
+                ],
+                "additionalProperties": true
+              }
+            ]
+          },
+          "minItems": 1
+        },
+        "postal_areas": {
+          "type": "array",
+          "description": "Filter by postal area coverage for locally-bound inventory (direct mail, DOOH, local campaigns). Use when products have postal-area-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "system": {
+                "title": "Postal Code System",
+                "description": "Postal code system (e.g., 'us_zip', 'gb_outward')",
+                "type": "string",
+                "enum": [
+                  "us_zip",
+                  "us_zip_plus_four",
+                  "gb_outward",
+                  "gb_full",
+                  "ca_fsa",
+                  "ca_full",
+                  "de_plz",
+                  "fr_code_postal",
+                  "au_postcode",
+                  "ch_plz",
+                  "at_plz"
+                ]
+              },
+              "values": {
+                "type": "array",
+                "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "system",
+              "values"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "geo_proximity": {
+          "type": "array",
+          "description": "Filter by proximity to geographic points. Returns products with inventory coverage near these locations. Follows the same format as the targeting overlay \u2014 each entry uses exactly one method: travel_time + transport_mode, radius, or geometry. For locally-bound inventory (DOOH, radio), filters to products with coverage in the area. For digital inventory, filters to products from sellers supporting geo_proximity targeting.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "lat": {
+                "type": "number",
+                "minimum": -90,
+                "maximum": 90,
+                "description": "Latitude in decimal degrees (WGS 84)"
+              },
+              "lng": {
+                "type": "number",
+                "minimum": -180,
+                "maximum": 180,
+                "description": "Longitude in decimal degrees (WGS 84)"
+              },
+              "label": {
+                "type": "string",
+                "description": "Human-readable label (e.g., 'D\u00fcsseldorf', 'Heathrow Airport')"
+              },
+              "travel_time": {
+                "type": "object",
+                "description": "Travel time limit for isochrone calculation",
+                "properties": {
+                  "value": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Travel time limit"
+                  },
+                  "unit": {
+                    "type": "string",
+                    "enum": [
+                      "min",
+                      "hr"
+                    ],
+                    "description": "Time unit"
+                  }
+                },
+                "required": [
+                  "value",
+                  "unit"
+                ],
+                "additionalProperties": false
+              },
+              "transport_mode": {
+                "title": "Transport Mode",
+                "description": "Transportation mode for isochrone calculation. Required when travel_time is provided.",
+                "type": "string",
+                "enum": [
+                  "walking",
+                  "cycling",
+                  "driving",
+                  "public_transport"
+                ],
+                "enumDescriptions": {
+                  "walking": "Pedestrian travel on walkable paths and sidewalks",
+                  "cycling": "Bicycle travel on roads and cycle paths",
+                  "driving": "Motor vehicle travel on road networks",
+                  "public_transport": "Public transit including bus, rail, metro, and ferry"
+                }
+              },
+              "radius": {
+                "type": "object",
+                "description": "Simple radius from the point",
+                "properties": {
+                  "value": {
+                    "type": "number",
+                    "exclusiveMinimum": 0,
+                    "description": "Radius distance"
+                  },
+                  "unit": {
+                    "title": "Distance Unit",
+                    "description": "Distance unit",
+                    "type": "string",
+                    "enum": [
+                      "km",
+                      "mi",
+                      "m"
+                    ],
+                    "enumDescriptions": {
+                      "km": "Kilometers",
+                      "mi": "Miles",
+                      "m": "Meters"
+                    }
+                  }
+                },
+                "required": [
+                  "value",
+                  "unit"
+                ],
+                "additionalProperties": false
+              },
+              "geometry": {
+                "type": "object",
+                "description": "Pre-computed GeoJSON geometry defining the proximity boundary",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "enum": [
+                      "Polygon",
+                      "MultiPolygon"
+                    ],
+                    "description": "GeoJSON geometry type"
+                  },
+                  "coordinates": {
+                    "type": "array",
+                    "description": "GeoJSON coordinates array"
+                  }
+                },
+                "required": [
+                  "type",
+                  "coordinates"
+                ],
+                "additionalProperties": false
+              }
+            },
+            "oneOf": [
+              {
+                "required": [
+                  "lat",
+                  "lng",
+                  "travel_time",
+                  "transport_mode"
+                ],
+                "not": {
+                  "anyOf": [
+                    {
+                      "required": [
+                        "radius"
+                      ]
+                    },
+                    {
+                      "required": [
+                        "geometry"
+                      ]
+                    }
+                  ]
+                }
+              },
+              {
+                "required": [
+                  "lat",
+                  "lng",
+                  "radius"
+                ],
+                "not": {
+                  "anyOf": [
+                    {
+                      "required": [
+                        "travel_time"
+                      ]
+                    },
+                    {
+                      "required": [
+                        "geometry"
+                      ]
+                    }
+                  ]
+                }
+              },
+              {
+                "required": [
+                  "geometry"
+                ],
+                "not": {
+                  "anyOf": [
+                    {
+                      "required": [
+                        "travel_time"
+                      ]
+                    },
+                    {
+                      "required": [
+                        "radius"
+                      ]
+                    }
+                  ]
+                }
+              }
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "required_performance_standards": {
+          "type": "array",
+          "description": "Filter to products that can meet the buyer's performance standard requirements. Each entry specifies a metric, minimum threshold, and optionally a required vendor and standard. Products that cannot meet these thresholds or do not support the specified vendors are excluded. Use this to tell the seller upfront: 'I need DoubleVerify for viewability at 70% MRC.'",
+          "items": {
+            "title": "Performance Standard",
+            "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+            "type": "object",
+            "properties": {
+              "metric": {
+                "title": "Performance Standard Metric",
+                "description": "The performance metric this standard applies to.",
+                "type": "string",
+                "enum": [
+                  "viewability",
+                  "ivt",
+                  "completion_rate",
+                  "brand_safety",
+                  "attention_score"
+                ],
+                "enumDescriptions": {
+                  "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+                  "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+                  "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                  "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                  "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+                }
+              },
+              "threshold": {
+                "type": "number",
+                "minimum": 0,
+                "maximum": 1,
+                "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+              },
+              "standard": {
+                "title": "Viewability Standard",
+                "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+                "type": "string",
+                "enum": [
+                  "mrc",
+                  "groupm"
+                ],
+                "enumDescriptions": {
+                  "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                  "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                }
+              },
+              "vendor": {
+                "title": "Brand Reference",
+                "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+                "type": "object",
+                "properties": {
+                  "domain": {
+                    "type": "string",
+                    "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "brand_id": {
+                    "title": "Brand ID",
+                    "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                    "type": "string",
+                    "pattern": "^[a-z0-9_]+$",
+                    "examples": [
+                      "tide",
+                      "cheerios",
+                      "air_jordan",
+                      "nike",
+                      "pampers"
+                    ]
+                  }
+                },
+                "required": [
+                  "domain"
+                ],
+                "additionalProperties": false,
+                "examples": [
+                  {
+                    "domain": "nova-brands.com",
+                    "brand_id": "spark"
+                  },
+                  {
+                    "domain": "nova-brands.com",
+                    "brand_id": "glow"
+                  },
+                  {
+                    "domain": "acme-corp.com"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "metric",
+              "threshold",
+              "vendor"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "keywords": {
+          "type": "array",
+          "description": "Filter by keyword relevance for search and retail media platforms. Returns products that support keyword targeting for these terms. Allows the sell-side agent to assess keyword availability and recommend appropriate products. Use match_type to indicate the desired precision.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "keyword": {
+                "type": "string",
+                "minLength": 1,
+                "description": "The keyword to target"
+              },
+              "match_type": {
+                "type": "string",
+                "enum": [
+                  "broad",
+                  "phrase",
+                  "exact"
+                ],
+                "default": "broad",
+                "description": "Desired match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly. Defaults to broad."
+              }
+            },
+            "required": [
+              "keyword"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        }
+      },
+      "additionalProperties": true
+    },
+    "property_list": {
+      "title": "Property List Reference",
+      "description": "[AdCP 3.0] Reference to an externally managed property list. When provided, the sales agent should filter products to only those available on properties in the list.",
+      "type": "object",
+      "properties": {
+        "agent_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL of the agent managing the property list"
+        },
+        "list_id": {
+          "type": "string",
+          "description": "Identifier for the property list within the agent",
+          "minLength": 1
+        },
+        "auth_token": {
+          "type": "string",
+          "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+        }
+      },
+      "required": [
+        "agent_url",
+        "list_id"
+      ],
+      "additionalProperties": false
+    },
+    "fields": {
+      "type": "array",
+      "description": "Specific product fields to include in the response. When omitted, all fields are returned. Use for lightweight discovery calls where only a subset of product data is needed (e.g., just IDs and pricing for comparison). Required fields (product_id, name) are always included regardless of selection.",
+      "minItems": 1,
+      "items": {
+        "type": "string",
+        "enum": [
+          "product_id",
+          "name",
+          "description",
+          "publisher_properties",
+          "channels",
+          "format_ids",
+          "placements",
+          "delivery_type",
+          "exclusivity",
+          "pricing_options",
+          "forecast",
+          "outcome_measurement",
+          "delivery_measurement",
+          "reporting_capabilities",
+          "creative_policy",
+          "catalog_types",
+          "metric_optimization",
+          "conversion_tracking",
+          "data_provider_signals",
+          "max_optimization_goals",
+          "catalog_match",
+          "collections",
+          "collection_targeting_allowed",
+          "installments",
+          "brief_relevance",
+          "expires_at",
+          "product_card",
+          "product_card_detailed",
+          "enforced_policies",
+          "trusted_match"
+        ]
+      }
+    },
+    "time_budget": {
+      "allOf": [
+        {
+          "title": "Duration",
+          "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+          "type": "object",
+          "properties": {
+            "interval": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Number of time units. Must be 1 when unit is 'campaign'."
+            },
+            "unit": {
+              "type": "string",
+              "enum": [
+                "seconds",
+                "minutes",
+                "hours",
+                "days",
+                "campaign"
+              ],
+              "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+            }
+          },
+          "required": [
+            "interval",
+            "unit"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "description": "Maximum time the buyer will commit to this request. The seller returns the best results achievable within this budget and does not start processes (human approvals, expensive external queries) that cannot complete in time. When omitted, the seller decides timing."
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "required_policies": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Registry policy IDs that the buyer requires to be enforced for products in this response. Sellers filter products to only those that comply with or already enforce the requested policies."
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "buying_mode"
+  ],
+  "dependencies": {
+    "catalog": [
+      "brand"
+    ]
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.389Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/get-products-response.json b/schemas/cache/bundled/media-buy/get-products-response.json
new file mode 100644
index 000000000..6feb0bb5e
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/get-products-response.json
@@ -0,0 +1,7172 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Products Response",
+  "description": "Response payload for get_products task",
+  "type": "object",
+  "properties": {
+    "products": {
+      "type": "array",
+      "description": "Array of matching products",
+      "items": {
+        "title": "Product",
+        "description": "Represents available advertising inventory",
+        "type": "object",
+        "properties": {
+          "product_id": {
+            "type": "string",
+            "description": "Unique identifier for the product"
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable product name"
+          },
+          "description": {
+            "type": "string",
+            "description": "Detailed description of the product and its inventory"
+          },
+          "publisher_properties": {
+            "type": "array",
+            "description": "Publisher properties covered by this product. Buyers fetch actual property definitions from each publisher's adagents.json and validate agent authorization. Selection patterns mirror the authorization patterns in adagents.json for consistency.",
+            "items": {
+              "title": "Publisher Property Selector",
+              "description": "Selects properties from a publisher's adagents.json. Used for both product definitions and agent authorization. Supports three selection patterns: all properties, specific IDs, or by tags.",
+              "discriminator": {
+                "propertyName": "selection_type"
+              },
+              "oneOf": [
+                {
+                  "type": "object",
+                  "description": "Select all properties from the publisher domain",
+                  "properties": {
+                    "publisher_domain": {
+                      "type": "string",
+                      "description": "Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "selection_type": {
+                      "type": "string",
+                      "const": "all",
+                      "description": "Discriminator indicating all properties from this publisher are included"
+                    }
+                  },
+                  "required": [
+                    "publisher_domain",
+                    "selection_type"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "description": "Select specific properties by ID",
+                  "properties": {
+                    "publisher_domain": {
+                      "type": "string",
+                      "description": "Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "selection_type": {
+                      "type": "string",
+                      "const": "by_id",
+                      "description": "Discriminator indicating selection by specific property IDs"
+                    },
+                    "property_ids": {
+                      "type": "array",
+                      "description": "Specific property IDs from the publisher's adagents.json",
+                      "items": {
+                        "title": "Property ID",
+                        "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "cnn_ctv_app",
+                          "homepage",
+                          "mobile_ios",
+                          "instagram"
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "publisher_domain",
+                    "selection_type",
+                    "property_ids"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "description": "Select properties by tag membership",
+                  "properties": {
+                    "publisher_domain": {
+                      "type": "string",
+                      "description": "Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "selection_type": {
+                      "type": "string",
+                      "const": "by_tag",
+                      "description": "Discriminator indicating selection by property tags"
+                    },
+                    "property_tags": {
+                      "type": "array",
+                      "description": "Property tags from the publisher's adagents.json. Selector covers all properties with these tags",
+                      "items": {
+                        "title": "Property Tag",
+                        "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "ctv",
+                          "premium",
+                          "news",
+                          "sports",
+                          "meta_network",
+                          "social_media"
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "publisher_domain",
+                    "selection_type",
+                    "property_tags"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "channels": {
+            "type": "array",
+            "description": "Advertising channels this product is sold as. Products inherit from their properties' supported_channels but may narrow the scope. For example, a product covering YouTube properties might be sold as ['ctv'] even though those properties support ['olv', 'social', 'ctv'].",
+            "items": {
+              "title": "Media Channel",
+              "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+              "type": "string",
+              "enum": [
+                "display",
+                "olv",
+                "social",
+                "search",
+                "ctv",
+                "linear_tv",
+                "radio",
+                "streaming_audio",
+                "podcast",
+                "dooh",
+                "ooh",
+                "print",
+                "cinema",
+                "email",
+                "gaming",
+                "retail_media",
+                "influencer",
+                "affiliate",
+                "product_placement",
+                "sponsored_intelligence"
+              ],
+              "enumDescriptions": {
+                "display": "Digital display advertising (banners, native, rich media) across web and app",
+                "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                "search": "Search engine advertising and search networks",
+                "ctv": "Connected TV and streaming on television screens",
+                "linear_tv": "Traditional broadcast and cable television",
+                "radio": "Traditional AM/FM radio broadcast",
+                "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                "dooh": "Digital out-of-home screens in public spaces",
+                "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                "print": "Newspapers, magazines, and other print publications",
+                "cinema": "Movie theater advertising",
+                "email": "Email advertising and sponsored newsletter content",
+                "gaming": "In-game advertising across platforms",
+                "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                "influencer": "Creator and influencer marketing partnerships",
+                "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                "product_placement": "Product placement, branded content, and sponsorship integrations",
+                "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+              }
+            },
+            "uniqueItems": true
+          },
+          "format_ids": {
+            "type": "array",
+            "description": "Array of supported creative format IDs - structured format_id objects with agent_url and id",
+            "items": {
+              "title": "Format ID",
+              "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            }
+          },
+          "placements": {
+            "type": "array",
+            "description": "Optional array of specific placements within this product. When provided, buyers can target specific placements when assigning creatives.",
+            "items": {
+              "title": "Placement",
+              "description": "Represents a specific ad placement within a product's inventory. When the publisher declares a placement registry in adagents.json, products SHOULD reuse those placement_id values. Reusing a registered placement_id preserves the registry's semantic identity; product-level placement objects may narrow format_ids or add operational detail, but SHOULD NOT redefine the placement's meaning incompatibly.",
+              "type": "object",
+              "properties": {
+                "placement_id": {
+                  "type": "string",
+                  "description": "Unique identifier for the placement within the product"
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for the placement (e.g., 'Homepage Banner', 'Article Sidebar')"
+                },
+                "description": {
+                  "type": "string",
+                  "description": "Detailed description of where and how the placement appears"
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "Optional tags for grouping placements within a product (e.g., 'homepage', 'native', 'premium'). When the placement_id comes from the publisher registry, these should align with the registry tags unless the product is narrowing scope.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "uniqueItems": true
+                },
+                "format_ids": {
+                  "type": "array",
+                  "description": "Format IDs supported by this specific placement. Can include: (1) concrete format_ids (fixed dimensions), (2) template format_ids without parameters (accepts any dimensions/duration), or (3) parameterized format_ids (specific dimension/duration constraints).",
+                  "items": {
+                    "title": "Format ID",
+                    "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                      },
+                      "id": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$",
+                        "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                      },
+                      "duration_ms": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "id"
+                    ],
+                    "additionalProperties": true,
+                    "dependencies": {
+                      "width": [
+                        "height"
+                      ],
+                      "height": [
+                        "width"
+                      ]
+                    }
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "placement_id",
+                "name"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "delivery_type": {
+            "title": "Delivery Type",
+            "description": "Type of inventory delivery",
+            "type": "string",
+            "enum": [
+              "guaranteed",
+              "non_guaranteed"
+            ],
+            "enumDescriptions": {
+              "guaranteed": "Reserved inventory with guaranteed delivery",
+              "non_guaranteed": "Auction-based inventory without delivery guarantees"
+            }
+          },
+          "exclusivity": {
+            "title": "Exclusivity",
+            "description": "Whether this product offers exclusive access to its inventory. Defaults to 'none' when absent. Most relevant for guaranteed products tied to specific collections or placements.",
+            "type": "string",
+            "enum": [
+              "none",
+              "category",
+              "exclusive"
+            ],
+            "enumDescriptions": {
+              "none": "No exclusivity \u2014 multiple advertisers can buy this product simultaneously",
+              "category": "Category-exclusive \u2014 only one advertiser per industry category (e.g., one auto brand per collection sponsorship)",
+              "exclusive": "Sole sponsorship \u2014 only one advertiser can buy this product"
+            }
+          },
+          "pricing_options": {
+            "type": "array",
+            "description": "Available pricing models for this product",
+            "items": {
+              "title": "Pricing Option",
+              "description": "A pricing model option offered by a publisher for a product. Discriminated by pricing_model field. If fixed_price is present, it's fixed pricing. If absent, it's auction-based (floor_price and price_guidance optional). Bid-based auction models may also include max_bid as a boolean signal to interpret bid_price as a buyer ceiling instead of an exact honored price.",
+              "oneOf": [
+                {
+                  "title": "CPM Pricing Option",
+                  "description": "Cost Per Mille (cost per 1,000 impressions) pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "cpm",
+                      "description": "Cost per 1,000 impressions"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Fixed price per unit. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "max_bid": {
+                      "type": "boolean",
+                      "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
+                      "default": false
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "vCPM Pricing Option",
+                  "description": "Viewable Cost Per Mille (cost per 1,000 viewable impressions) pricing - MRC viewability standard. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "vcpm",
+                      "description": "Cost per 1,000 viewable impressions (MRC standard)"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Fixed price per unit. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "max_bid": {
+                      "type": "boolean",
+                      "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
+                      "default": false
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CPC Pricing Option",
+                  "description": "Cost Per Click pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "cpc",
+                      "description": "Cost per click"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Fixed price per click. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "max_bid": {
+                      "type": "boolean",
+                      "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
+                      "default": false
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CPCV Pricing Option",
+                  "description": "Cost Per Completed View (100% video/audio completion) pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "cpcv",
+                      "description": "Cost per completed view (100% completion)"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Fixed price per completed view. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "max_bid": {
+                      "type": "boolean",
+                      "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
+                      "default": false
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CPV Pricing Option",
+                  "description": "Cost Per View (at publisher-defined threshold) pricing for video/audio. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "cpv",
+                      "description": "Cost per view at threshold"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Fixed price per view. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "max_bid": {
+                      "type": "boolean",
+                      "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
+                      "default": false
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "parameters": {
+                      "type": "object",
+                      "description": "CPV-specific parameters defining the view threshold",
+                      "properties": {
+                        "view_threshold": {
+                          "oneOf": [
+                            {
+                              "type": "number",
+                              "description": "Percentage completion threshold (0.0 to 1.0, e.g., 0.5 = 50%)",
+                              "minimum": 0,
+                              "maximum": 1
+                            },
+                            {
+                              "type": "object",
+                              "description": "Time-based view threshold",
+                              "properties": {
+                                "duration_seconds": {
+                                  "type": "integer",
+                                  "description": "Seconds of viewing required",
+                                  "minimum": 1
+                                }
+                              },
+                              "required": [
+                                "duration_seconds"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "view_threshold"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency",
+                    "parameters"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CPP Pricing Option",
+                  "description": "Cost Per Point (Gross Rating Point) pricing for TV and audio campaigns. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "cpp",
+                      "description": "Cost per Gross Rating Point"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Fixed price per rating point. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "parameters": {
+                      "type": "object",
+                      "description": "CPP-specific parameters for demographic targeting",
+                      "properties": {
+                        "demographic_system": {
+                          "title": "Demographic System",
+                          "description": "Measurement system for the demographic field. Defaults to nielsen when omitted.",
+                          "type": "string",
+                          "enum": [
+                            "nielsen",
+                            "barb",
+                            "agf",
+                            "oztam",
+                            "mediametrie",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "nielsen": "Nielsen notation. Prefix: P(ersons), M(en), W(omen), A(dults), C(hildren), T(eens) + age range. Examples: P18-49, M25-54, W35+",
+                            "barb": "BARB (UK). NRS social grade + age bands. Examples: ABC1 Adults, 16-34, Adults",
+                            "agf": "AGF Videoforschung (Germany). Erwachsene notation + age bands. Examples: E 14-49, E 14+",
+                            "oztam": "OzTAM (Australia). Age/gender bands, 4+ measurement universe",
+                            "mediametrie": "Mediametrie (France). Named segments + age bands",
+                            "custom": "Publisher-defined demographic notation"
+                          }
+                        },
+                        "demographic": {
+                          "type": "string",
+                          "description": "Target demographic code within the specified demographic_system (e.g., P18-49 for Nielsen, ABC1 Adults for BARB)"
+                        },
+                        "min_points": {
+                          "type": "number",
+                          "description": "Minimum GRPs/TRPs required",
+                          "minimum": 0
+                        }
+                      },
+                      "required": [
+                        "demographic"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency",
+                    "parameters"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "CPA Pricing Option",
+                  "description": "Cost Per Acquisition pricing. Advertiser pays a fixed price when a specified conversion event occurs. The event_type field declares which event triggers billing (e.g., purchase, lead, app_install).",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "cpa",
+                      "description": "Cost per acquisition (conversion event)"
+                    },
+                    "event_type": {
+                      "allOf": [
+                        {
+                          "title": "Event Type",
+                          "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                          "type": "string",
+                          "enum": [
+                            "page_view",
+                            "view_content",
+                            "select_content",
+                            "select_item",
+                            "search",
+                            "share",
+                            "add_to_cart",
+                            "remove_from_cart",
+                            "viewed_cart",
+                            "add_to_wishlist",
+                            "initiate_checkout",
+                            "add_payment_info",
+                            "purchase",
+                            "refund",
+                            "lead",
+                            "qualify_lead",
+                            "close_convert_lead",
+                            "disqualify_lead",
+                            "complete_registration",
+                            "subscribe",
+                            "start_trial",
+                            "app_install",
+                            "app_launch",
+                            "contact",
+                            "schedule",
+                            "donate",
+                            "submit_application",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "page_view": "User viewed a page",
+                            "view_content": "User viewed specific content (product, article, etc.)",
+                            "select_content": "User selected or clicked on content (article, video, etc.)",
+                            "select_item": "User selected a specific product or item from a list",
+                            "search": "User performed a search",
+                            "share": "User shared content via social or messaging",
+                            "add_to_cart": "User added an item to cart",
+                            "remove_from_cart": "User removed an item from cart",
+                            "viewed_cart": "User viewed their shopping cart",
+                            "add_to_wishlist": "User added an item to a wishlist",
+                            "initiate_checkout": "User started checkout process",
+                            "add_payment_info": "User added payment information",
+                            "purchase": "User completed a purchase",
+                            "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                            "lead": "User expressed interest (form submission, signup, etc.)",
+                            "qualify_lead": "Lead qualified by sales or scoring criteria",
+                            "close_convert_lead": "Lead converted to a customer or closed deal",
+                            "disqualify_lead": "Lead disqualified or marked as not viable",
+                            "complete_registration": "User completed account registration",
+                            "subscribe": "User subscribed to a service or newsletter",
+                            "start_trial": "User started a free trial",
+                            "app_install": "User installed an application",
+                            "app_launch": "User launched an application",
+                            "contact": "User initiated contact (call, message, etc.)",
+                            "schedule": "User scheduled an appointment or event",
+                            "donate": "User made a donation",
+                            "submit_application": "User submitted an application (loan, job, etc.)",
+                            "custom": "Custom event type (specify in custom_event_name)"
+                          }
+                        }
+                      ],
+                      "description": "The conversion event type that triggers billing (e.g., purchase, lead, app_install)"
+                    },
+                    "custom_event_name": {
+                      "type": "string",
+                      "description": "Name of the custom event when event_type is 'custom'. Required when event_type is 'custom', ignored otherwise."
+                    },
+                    "event_source_id": {
+                      "type": "string",
+                      "description": "When present, only events from this specific event source count toward billing. Allows different CPA rates for different sources (e.g., online vs in-store purchases). Must match an event source configured via sync_event_sources."
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Fixed price per acquisition in the specified currency",
+                      "exclusiveMinimum": 0
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "event_type",
+                    "currency",
+                    "fixed_price"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Flat Rate Pricing Option",
+                  "description": "Flat rate pricing for sponsorships, takeovers, and DOOH exclusive placements. A fixed total cost regardless of delivery volume. For duration-scaled pricing (rate \u00d7 time units), use the `time` model instead. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "flat_rate",
+                      "description": "Fixed cost regardless of delivery volume"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Flat rate cost. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "parameters": {
+                      "title": "DoohParameters",
+                      "description": "DOOH inventory allocation parameters. Sponsorship and takeover flat_rate options omit this field entirely \u2014 only include for digital out-of-home inventory.",
+                      "type": "object",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "const": "dooh",
+                          "description": "Discriminator identifying this as DOOH parameters"
+                        },
+                        "sov_percentage": {
+                          "type": "number",
+                          "description": "Guaranteed share of voice as a percentage (0-100)",
+                          "minimum": 0,
+                          "maximum": 100
+                        },
+                        "loop_duration_seconds": {
+                          "type": "integer",
+                          "description": "Duration of the ad loop rotation in seconds",
+                          "minimum": 1
+                        },
+                        "min_plays_per_hour": {
+                          "type": "integer",
+                          "description": "Minimum number of plays per hour guaranteed",
+                          "minimum": 1
+                        },
+                        "venue_package": {
+                          "type": "string",
+                          "description": "Named collection of screens included in this buy"
+                        },
+                        "duration_hours": {
+                          "type": "number",
+                          "description": "Duration of the DOOH slot in hours (e.g., 24 for a full-day takeover)",
+                          "minimum": 0
+                        },
+                        "daypart": {
+                          "type": "string",
+                          "description": "Named daypart for this slot (e.g., morning_commute, evening_rush)"
+                        },
+                        "estimated_impressions": {
+                          "type": "integer",
+                          "description": "Estimated audience impressions for this slot (informational, not a delivery guarantee)",
+                          "minimum": 0
+                        }
+                      },
+                      "required": [
+                        "type"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "title": "Time-Based Pricing Option",
+                  "description": "Cost per time unit (hour, day, week, or month) - rate scales with campaign duration. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Unique identifier for this pricing option within the product"
+                    },
+                    "pricing_model": {
+                      "type": "string",
+                      "const": "time",
+                      "description": "Cost per time unit - rate scales with campaign duration"
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code",
+                      "pattern": "^[A-Z]{3}$",
+                      "examples": [
+                        "USD",
+                        "EUR",
+                        "GBP",
+                        "JPY"
+                      ]
+                    },
+                    "fixed_price": {
+                      "type": "number",
+                      "description": "Cost per time unit. If present, this is fixed pricing. If absent, auction-based.",
+                      "minimum": 0
+                    },
+                    "floor_price": {
+                      "type": "number",
+                      "description": "Minimum acceptable bid per time unit for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
+                      "minimum": 0
+                    },
+                    "price_guidance": {
+                      "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+                      "title": "Price Guidance",
+                      "type": "object",
+                      "properties": {
+                        "p25": {
+                          "type": "number",
+                          "description": "25th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p50": {
+                          "type": "number",
+                          "description": "Median of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p75": {
+                          "type": "number",
+                          "description": "75th percentile of recent winning bids",
+                          "minimum": 0
+                        },
+                        "p90": {
+                          "type": "number",
+                          "description": "90th percentile of recent winning bids",
+                          "minimum": 0
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "parameters": {
+                      "type": "object",
+                      "description": "Time-based pricing parameters",
+                      "required": [
+                        "time_unit"
+                      ],
+                      "properties": {
+                        "time_unit": {
+                          "type": "string",
+                          "enum": [
+                            "hour",
+                            "day",
+                            "week",
+                            "month"
+                          ],
+                          "description": "The time unit for pricing. Total cost = fixed_price \u00d7 number of time_units in the campaign flight."
+                        },
+                        "min_duration": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum booking duration in time_units"
+                        },
+                        "max_duration": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum booking duration in time_units. Must be >= min_duration when both are present."
+                        }
+                      },
+                      "additionalProperties": true
+                    },
+                    "min_spend_per_package": {
+                      "type": "number",
+                      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+                      "minimum": 0
+                    },
+                    "price_breakdown": {
+                      "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                      "title": "Price Breakdown",
+                      "type": "object",
+                      "properties": {
+                        "list_price": {
+                          "type": "number",
+                          "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                          "exclusiveMinimum": 0
+                        },
+                        "adjustments": {
+                          "type": "array",
+                          "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "kind": {
+                                "title": "Price Adjustment Kind",
+                                "description": "Categorizes how a price adjustment affects the transaction",
+                                "type": "string",
+                                "enum": [
+                                  "fee",
+                                  "discount",
+                                  "commission",
+                                  "settlement"
+                                ],
+                                "enumDescriptions": {
+                                  "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                                  "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                                  "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                                  "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                                }
+                              },
+                              "name": {
+                                "type": "string",
+                                "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                                "maxLength": 64,
+                                "examples": [
+                                  "ad_serving",
+                                  "data_targeting",
+                                  "brand_safety",
+                                  "volume",
+                                  "negotiated",
+                                  "early_booking",
+                                  "agency",
+                                  "intermediary",
+                                  "cash_discount",
+                                  "early_payment"
+                                ]
+                              },
+                              "rate": {
+                                "type": "number",
+                                "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                                "exclusiveMinimum": 0,
+                                "exclusiveMaximum": 1
+                              },
+                              "amount": {
+                                "type": "number",
+                                "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                                "exclusiveMinimum": 0
+                              },
+                              "description": {
+                                "type": "string",
+                                "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                                "maxLength": 256
+                              },
+                              "beneficiary": {
+                                "type": "string",
+                                "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                                "maxLength": 256
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "name"
+                            ],
+                            "oneOf": [
+                              {
+                                "required": [
+                                  "rate"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "amount"
+                                ]
+                              }
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1,
+                          "maxItems": 20
+                        }
+                      },
+                      "required": [
+                        "list_price",
+                        "adjustments"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "eligible_adjustments": {
+                      "type": "array",
+                      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+                      "items": {
+                        "title": "Price Adjustment Kind",
+                        "description": "Categorizes how a price adjustment affects the transaction",
+                        "type": "string",
+                        "enum": [
+                          "fee",
+                          "discount",
+                          "commission",
+                          "settlement"
+                        ],
+                        "enumDescriptions": {
+                          "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                          "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                          "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                          "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                        }
+                      },
+                      "uniqueItems": true
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id",
+                    "pricing_model",
+                    "currency",
+                    "parameters"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "forecast": {
+            "title": "Delivery Forecast",
+            "description": "Forecasted delivery metrics for this product. Gives buyers an estimate of expected performance before requesting a proposal.",
+            "type": "object",
+            "properties": {
+              "points": {
+                "type": "array",
+                "description": "Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.",
+                "items": {
+                  "title": "Forecast Point",
+                  "description": "A forecast data point. When budget is present, the point pairs a spend level with expected delivery \u2014 multiple points at ascending budgets form a curve. When budget is omitted, the point represents total available inventory for the requested targeting and dates, independent of spend.",
+                  "type": "object",
+                  "properties": {
+                    "label": {
+                      "type": "string",
+                      "maxLength": 128,
+                      "description": "Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+                      "examples": [
+                        "Primetime",
+                        "Morning Drive",
+                        "Large Format Transit"
+                      ]
+                    },
+                    "budget": {
+                      "type": "number",
+                      "description": "Budget amount for this forecast point. Required for spend curves; omit for availability forecasts where the metrics represent total available inventory. For allocation-level forecasts, this is the absolute budget for that allocation (not the percentage). For proposal-level forecasts, this is the total proposal budget. When omitted, use metrics.spend to express the estimated cost of the available inventory.",
+                      "minimum": 0
+                    },
+                    "metrics": {
+                      "type": "object",
+                      "description": "Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { \"mid\": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory \u2014 use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).",
+                      "properties": {
+                        "audience_size": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "reach": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "frequency": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "impressions": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "clicks": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "spend": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "views": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "completed_views": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "grps": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "engagements": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "follows": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "saves": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "profile_visits": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "measured_impressions": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "downloads": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "plays": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": {
+                        "title": "Forecast Range",
+                        "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                        "type": "object",
+                        "properties": {
+                          "low": {
+                            "type": "number",
+                            "description": "Conservative (low-end) forecast value",
+                            "minimum": 0
+                          },
+                          "mid": {
+                            "type": "number",
+                            "description": "Expected (most likely) forecast value",
+                            "minimum": 0
+                          },
+                          "high": {
+                            "type": "number",
+                            "description": "Optimistic (high-end) forecast value",
+                            "minimum": 0
+                          }
+                        },
+                        "anyOf": [
+                          {
+                            "required": [
+                              "mid"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "low",
+                              "high"
+                            ]
+                          }
+                        ],
+                        "additionalProperties": true
+                      }
+                    }
+                  },
+                  "required": [
+                    "metrics"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "forecast_range_unit": {
+                "title": "Forecast Range Unit",
+                "description": "How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package.",
+                "type": "string",
+                "enum": [
+                  "spend",
+                  "availability",
+                  "reach_freq",
+                  "weekly",
+                  "daily",
+                  "clicks",
+                  "conversions",
+                  "package"
+                ],
+                "enumDescriptions": {
+                  "spend": "Points at ascending budget levels. Standard budget curve showing how delivery metrics scale with spend. Default when field is omitted.",
+                  "availability": "Each point represents total available inventory for the requested targeting and dates. Budget is omitted \u2014 metrics express what exists, not what a given spend level buys. Use metrics.spend to express the estimated cost. Typical for guaranteed and direct-sold inventory where the forecast is an availability check.",
+                  "reach_freq": "Points at ascending reach/frequency targets. Used in broadcast planning where the publisher shows how cost scales with frequency goals.",
+                  "weekly": "Metrics are per-week values. Budget refers to total campaign spend. Frequency of 3.2 means 3.2 exposures per week.",
+                  "daily": "Metrics are per-day values. Budget refers to total campaign spend.",
+                  "clicks": "Points at ascending click targets. Used in performance campaigns where the buyer specifies click goals.",
+                  "conversions": "Points at ascending conversion targets. Used in goal-based planning (e.g., Meta-style 'tell me your goal, I'll tell you the budget').",
+                  "package": "Each point represents a distinct inventory package (e.g., Good/Better/Best tiers, daypart packages, sponsorships). Points are not levels on a spend curve \u2014 they are separate products with different inventory compositions. Used by broadcast TV, audio, and DOOH sellers who sell packages rather than impressions at variable spend levels."
+                }
+              },
+              "method": {
+                "title": "Forecast Method",
+                "description": "Method used to produce this forecast",
+                "type": "string",
+                "enum": [
+                  "estimate",
+                  "modeled",
+                  "guaranteed"
+                ],
+                "enumDescriptions": {
+                  "estimate": "Rough approximation based on historical averages or heuristics. No delivery commitment.",
+                  "modeled": "Forecast derived from platform-specific predictive models or historical data. Publisher uses this to set expectations but does not guarantee delivery.",
+                  "guaranteed": "Contractually committed delivery levels backed by reserved inventory"
+                }
+              },
+              "currency": {
+                "type": "string",
+                "description": "ISO 4217 currency code for monetary values in this forecast (spend, budget)"
+              },
+              "demographic_system": {
+                "title": "Demographic System",
+                "description": "Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation.",
+                "type": "string",
+                "enum": [
+                  "nielsen",
+                  "barb",
+                  "agf",
+                  "oztam",
+                  "mediametrie",
+                  "custom"
+                ],
+                "enumDescriptions": {
+                  "nielsen": "Nielsen notation. Prefix: P(ersons), M(en), W(omen), A(dults), C(hildren), T(eens) + age range. Examples: P18-49, M25-54, W35+",
+                  "barb": "BARB (UK). NRS social grade + age bands. Examples: ABC1 Adults, 16-34, Adults",
+                  "agf": "AGF Videoforschung (Germany). Erwachsene notation + age bands. Examples: E 14-49, E 14+",
+                  "oztam": "OzTAM (Australia). Age/gender bands, 4+ measurement universe",
+                  "mediametrie": "Mediametrie (France). Named segments + age bands",
+                  "custom": "Publisher-defined demographic notation"
+                }
+              },
+              "demographic": {
+                "type": "string",
+                "description": "Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.",
+                "examples": [
+                  "P18-49",
+                  "A25-54",
+                  "W35+",
+                  "M18-34"
+                ]
+              },
+              "measurement_source": {
+                "type": "string",
+                "maxLength": 64,
+                "pattern": "^[a-z0-9_]+$",
+                "description": "Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation \u2014 measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.",
+                "examples": [
+                  "nielsen",
+                  "videoamp",
+                  "comscore",
+                  "geopath",
+                  "barb",
+                  "agf",
+                  "oztam",
+                  "kantar",
+                  "barc",
+                  "route",
+                  "rajar",
+                  "triton"
+                ]
+              },
+              "reach_unit": {
+                "title": "Reach Unit",
+                "description": "Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison.",
+                "type": "string",
+                "enum": [
+                  "individuals",
+                  "households",
+                  "devices",
+                  "accounts",
+                  "cookies",
+                  "custom"
+                ],
+                "enumDescriptions": {
+                  "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                  "households": "Unique households or TV homes.",
+                  "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                  "accounts": "Unique logged-in accounts (platform-specific identity).",
+                  "cookies": "Unique browser cookies.",
+                  "custom": "Publisher-defined reach unit. Describe in ext."
+                }
+              },
+              "generated_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this forecast was computed"
+              },
+              "valid_until": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "points",
+              "method",
+              "currency"
+            ],
+            "additionalProperties": true
+          },
+          "outcome_measurement": {
+            "title": "Outcome Measurement",
+            "description": "Business outcome measurement capabilities included with a product (e.g., incremental sales lift, brand lift, foot traffic). Distinct from delivery_measurement, which declares who counts ad impressions.",
+            "type": "object",
+            "properties": {
+              "type": {
+                "type": "string",
+                "description": "Type of measurement",
+                "examples": [
+                  "incremental_sales_lift",
+                  "brand_lift",
+                  "foot_traffic"
+                ]
+              },
+              "attribution": {
+                "type": "string",
+                "description": "Attribution methodology",
+                "examples": [
+                  "deterministic_purchase",
+                  "probabilistic"
+                ]
+              },
+              "window": {
+                "allOf": [
+                  {
+                    "title": "Duration",
+                    "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                    "type": "object",
+                    "properties": {
+                      "interval": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                      },
+                      "unit": {
+                        "type": "string",
+                        "enum": [
+                          "seconds",
+                          "minutes",
+                          "hours",
+                          "days",
+                          "campaign"
+                        ],
+                        "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                      }
+                    },
+                    "required": [
+                      "interval",
+                      "unit"
+                    ],
+                    "additionalProperties": false
+                  }
+                ],
+                "description": "Attribution window as a structured duration (e.g., {\"interval\": 30, \"unit\": \"days\"})."
+              },
+              "reporting": {
+                "type": "string",
+                "description": "Reporting frequency and format",
+                "examples": [
+                  "weekly_dashboard",
+                  "real_time_api"
+                ]
+              }
+            },
+            "required": [
+              "type",
+              "attribution",
+              "reporting"
+            ],
+            "additionalProperties": true
+          },
+          "delivery_measurement": {
+            "type": "object",
+            "description": "Measurement provider and methodology for delivery metrics. The buyer accepts the declared provider as the source of truth for the buy. When absent, buyers should apply their own measurement defaults.",
+            "properties": {
+              "provider": {
+                "type": "string",
+                "description": "Measurement provider(s) used for this product (e.g., 'Google Ad Manager with IAS viewability', 'Nielsen DAR', 'Geopath for DOOH impressions')"
+              },
+              "notes": {
+                "type": "string",
+                "description": "Additional details about measurement methodology in plain language (e.g., 'MRC-accredited viewability. 50% in-view for 1s display / 2s video', 'Panel-based demographic measurement updated monthly')"
+              }
+            },
+            "required": [
+              "provider"
+            ]
+          },
+          "measurement_terms": {
+            "title": "Measurement Terms",
+            "description": "Seller's default billing measurement and makegood terms. Declares who counts the billing metric and what remedies apply when thresholds are breached. Buyers may propose different terms at media buy creation \u2014 sellers accept, reject (TERMS_REJECTED), or adjust per their policy.",
+            "type": "object",
+            "properties": {
+              "billing_measurement": {
+                "type": "object",
+                "description": "Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV).",
+                "properties": {
+                  "vendor": {
+                    "title": "Brand Reference",
+                    "description": "Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+                    "type": "object",
+                    "properties": {
+                      "domain": {
+                        "type": "string",
+                        "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                        "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                      },
+                      "brand_id": {
+                        "title": "Brand ID",
+                        "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "tide",
+                          "cheerios",
+                          "air_jordan",
+                          "nike",
+                          "pampers"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "domain"
+                    ],
+                    "additionalProperties": false,
+                    "examples": [
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "spark"
+                      },
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "glow"
+                      },
+                      {
+                        "domain": "acme-corp.com"
+                      }
+                    ]
+                  },
+                  "max_variance_percent": {
+                    "type": "number",
+                    "minimum": 0,
+                    "exclusiveMaximum": 100,
+                    "description": "Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review)."
+                  },
+                  "measurement_window": {
+                    "type": "string",
+                    "description": "Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+                    "examples": [
+                      "live",
+                      "c3",
+                      "c7",
+                      "tentative",
+                      "final",
+                      "post_ivt",
+                      "post_sivt",
+                      "downloads_30d"
+                    ]
+                  }
+                },
+                "required": [
+                  "vendor"
+                ],
+                "additionalProperties": true
+              },
+              "makegood_policy": {
+                "type": "object",
+                "description": "Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.",
+                "properties": {
+                  "available_remedies": {
+                    "type": "array",
+                    "description": "Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.",
+                    "items": {
+                      "title": "Makegood Remedy",
+                      "description": "Remedy types available when a performance standard or billing measurement threshold is breached.",
+                      "type": "string",
+                      "enum": [
+                        "additional_delivery",
+                        "credit",
+                        "invoice_adjustment"
+                      ],
+                      "enumDescriptions": {
+                        "additional_delivery": "Seller extends or adds impressions to compensate for the shortfall. Delivery is like-for-like on the same campaign or a subsequent campaign within the same account.",
+                        "credit": "Seller issues a credit toward future media buys on the same account.",
+                        "invoice_adjustment": "Seller reduces the invoice for the current media buy to reflect actual delivered value."
+                      }
+                    },
+                    "minItems": 1,
+                    "uniqueItems": true
+                  }
+                },
+                "required": [
+                  "available_remedies"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "additionalProperties": true
+          },
+          "performance_standards": {
+            "type": "array",
+            "description": "Seller's default performance standards for this product: viewability, IVT, completion rate, brand safety, attention score. Buyers may propose different standards at media buy creation. When absent, no structured performance standards apply.",
+            "items": {
+              "title": "Performance Standard",
+              "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+              "type": "object",
+              "properties": {
+                "metric": {
+                  "title": "Performance Standard Metric",
+                  "description": "The performance metric this standard applies to.",
+                  "type": "string",
+                  "enum": [
+                    "viewability",
+                    "ivt",
+                    "completion_rate",
+                    "brand_safety",
+                    "attention_score"
+                  ],
+                  "enumDescriptions": {
+                    "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+                    "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+                    "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                    "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                    "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+                  }
+                },
+                "threshold": {
+                  "type": "number",
+                  "minimum": 0,
+                  "maximum": 1,
+                  "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+                },
+                "standard": {
+                  "title": "Viewability Standard",
+                  "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+                  "type": "string",
+                  "enum": [
+                    "mrc",
+                    "groupm"
+                  ],
+                  "enumDescriptions": {
+                    "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                    "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                  }
+                },
+                "vendor": {
+                  "title": "Brand Reference",
+                  "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+                  "type": "object",
+                  "properties": {
+                    "domain": {
+                      "type": "string",
+                      "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "brand_id": {
+                      "title": "Brand ID",
+                      "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "tide",
+                        "cheerios",
+                        "air_jordan",
+                        "nike",
+                        "pampers"
+                      ]
+                    }
+                  },
+                  "required": [
+                    "domain"
+                  ],
+                  "additionalProperties": false,
+                  "examples": [
+                    {
+                      "domain": "nova-brands.com",
+                      "brand_id": "spark"
+                    },
+                    {
+                      "domain": "nova-brands.com",
+                      "brand_id": "glow"
+                    },
+                    {
+                      "domain": "acme-corp.com"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "metric",
+                "threshold",
+                "vendor"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "cancellation_policy": {
+            "title": "Cancellation Policy",
+            "description": "Cancellation terms for this product. Declares the minimum notice period required before cancellation takes effect and any penalties for insufficient notice. Relevant for guaranteed delivery products. Buyers accept these terms by creating a media buy against the product.",
+            "type": "object",
+            "properties": {
+              "notice_period": {
+                "title": "Duration",
+                "description": "Minimum notice period before cancellation takes effect (e.g., { interval: 30, unit: 'days' }). A guaranteed buy canceled without sufficient notice incurs the declared cancellation fee.",
+                "type": "object",
+                "properties": {
+                  "interval": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                  },
+                  "unit": {
+                    "type": "string",
+                    "enum": [
+                      "seconds",
+                      "minutes",
+                      "hours",
+                      "days",
+                      "campaign"
+                    ],
+                    "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                  }
+                },
+                "required": [
+                  "interval",
+                  "unit"
+                ],
+                "additionalProperties": false
+              },
+              "cancellation_fee": {
+                "type": "object",
+                "description": "Fee applied when the notice period is not met.",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "enum": [
+                      "percent_remaining",
+                      "full_commitment",
+                      "fixed_fee",
+                      "none"
+                    ],
+                    "description": "Fee calculation method. 'percent_remaining': percentage of remaining uncommitted spend. 'full_commitment': buyer owes the full committed budget regardless of delivery. 'fixed_fee': flat monetary amount. 'none': no financial fee (cancellation with notice is free)."
+                  },
+                  "rate": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Fee rate as a decimal proportion of remaining committed spend. Required when type is 'percent_remaining' (e.g., 0.5 means 50% of remaining spend)."
+                  },
+                  "amount": {
+                    "type": "number",
+                    "minimum": 0,
+                    "description": "Fixed fee amount in the buy's currency. Required when type is 'fixed_fee'."
+                  }
+                },
+                "required": [
+                  "type"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "notice_period",
+              "cancellation_fee"
+            ],
+            "additionalProperties": true
+          },
+          "reporting_capabilities": {
+            "title": "Reporting Capabilities",
+            "description": "Reporting capabilities available for a product",
+            "type": "object",
+            "properties": {
+              "available_reporting_frequencies": {
+                "type": "array",
+                "description": "Supported reporting frequency options",
+                "items": {
+                  "title": "Reporting Frequency",
+                  "description": "Available frequencies for delivery reports and metrics updates",
+                  "type": "string",
+                  "enum": [
+                    "hourly",
+                    "daily",
+                    "monthly"
+                  ]
+                },
+                "minItems": 1,
+                "uniqueItems": true
+              },
+              "expected_delay_minutes": {
+                "type": "integer",
+                "description": "Expected delay in minutes before reporting data becomes available (e.g., 240 for 4-hour delay)",
+                "minimum": 0,
+                "examples": [
+                  240,
+                  300,
+                  1440
+                ]
+              },
+              "timezone": {
+                "type": "string",
+                "description": "Timezone for reporting periods. Use 'UTC' or IANA timezone (e.g., 'America/New_York'). Critical for daily/monthly frequency alignment.",
+                "examples": [
+                  "UTC",
+                  "America/New_York",
+                  "Europe/London",
+                  "America/Los_Angeles"
+                ]
+              },
+              "supports_webhooks": {
+                "type": "boolean",
+                "description": "Whether this product supports webhook-based reporting notifications"
+              },
+              "available_metrics": {
+                "type": "array",
+                "description": "Metrics available in reporting. Impressions and spend are always implicitly included. When a creative format declares reported_metrics, buyers receive the intersection of these product-level metrics and the format's reported_metrics.",
+                "items": {
+                  "title": "Available Metric",
+                  "description": "Standard delivery and performance metrics available for reporting",
+                  "type": "string",
+                  "enum": [
+                    "impressions",
+                    "spend",
+                    "clicks",
+                    "ctr",
+                    "video_completions",
+                    "completion_rate",
+                    "conversions",
+                    "conversion_value",
+                    "roas",
+                    "cost_per_acquisition",
+                    "new_to_brand_rate",
+                    "viewability",
+                    "engagement_rate",
+                    "views",
+                    "completed_views",
+                    "leads",
+                    "reach",
+                    "frequency",
+                    "grps",
+                    "quartile_data",
+                    "dooh_metrics",
+                    "cost_per_click"
+                  ]
+                },
+                "uniqueItems": true,
+                "examples": [
+                  [
+                    "impressions",
+                    "spend",
+                    "clicks",
+                    "video_completions"
+                  ],
+                  [
+                    "impressions",
+                    "spend",
+                    "conversions"
+                  ]
+                ]
+              },
+              "supports_creative_breakdown": {
+                "type": "boolean",
+                "description": "Whether this product supports creative-level metric breakdowns in delivery reporting (by_creative within by_package)"
+              },
+              "supports_keyword_breakdown": {
+                "type": "boolean",
+                "description": "Whether this product supports keyword-level metric breakdowns in delivery reporting (by_keyword within by_package)"
+              },
+              "supports_geo_breakdown": {
+                "title": "Geographic Breakdown Support",
+                "description": "Geographic breakdown support for this product. Declares which geo levels and systems are available for by_geo reporting within by_package.",
+                "type": "object",
+                "properties": {
+                  "country": {
+                    "type": "boolean",
+                    "description": "Supports country-level geo breakdown (ISO 3166-1 alpha-2)"
+                  },
+                  "region": {
+                    "type": "boolean",
+                    "description": "Supports region/state-level geo breakdown (ISO 3166-2)"
+                  },
+                  "metro": {
+                    "type": "object",
+                    "description": "Metro area breakdown support. Keys are metro-system enum values; true means supported.",
+                    "propertyNames": {
+                      "title": "Metro Area System",
+                      "description": "Metro area classification systems for geographic targeting",
+                      "type": "string",
+                      "enum": [
+                        "nielsen_dma",
+                        "uk_itl1",
+                        "uk_itl2",
+                        "eurostat_nuts2",
+                        "custom"
+                      ]
+                    },
+                    "additionalProperties": {
+                      "type": "boolean"
+                    }
+                  },
+                  "postal_area": {
+                    "type": "object",
+                    "description": "Postal area breakdown support. Keys are postal-system enum values; true means supported.",
+                    "propertyNames": {
+                      "title": "Postal Code System",
+                      "description": "Postal code systems for geographic targeting. System names encode country and precision level.",
+                      "type": "string",
+                      "enum": [
+                        "us_zip",
+                        "us_zip_plus_four",
+                        "gb_outward",
+                        "gb_full",
+                        "ca_fsa",
+                        "ca_full",
+                        "de_plz",
+                        "fr_code_postal",
+                        "au_postcode",
+                        "ch_plz",
+                        "at_plz"
+                      ]
+                    },
+                    "additionalProperties": {
+                      "type": "boolean"
+                    }
+                  }
+                },
+                "additionalProperties": false
+              },
+              "supports_device_type_breakdown": {
+                "type": "boolean",
+                "description": "Whether this product supports device type breakdowns in delivery reporting (by_device_type within by_package)"
+              },
+              "supports_device_platform_breakdown": {
+                "type": "boolean",
+                "description": "Whether this product supports device platform breakdowns in delivery reporting (by_device_platform within by_package)"
+              },
+              "supports_audience_breakdown": {
+                "type": "boolean",
+                "description": "Whether this product supports audience segment breakdowns in delivery reporting (by_audience within by_package)"
+              },
+              "supports_placement_breakdown": {
+                "type": "boolean",
+                "description": "Whether this product supports placement breakdowns in delivery reporting (by_placement within by_package)"
+              },
+              "date_range_support": {
+                "type": "string",
+                "enum": [
+                  "date_range",
+                  "lifetime_only"
+                ],
+                "description": "Whether delivery data can be filtered to arbitrary date ranges. 'date_range' means the platform supports start_date/end_date parameters. 'lifetime_only' means the platform returns campaign lifetime totals and date range parameters are not accepted.",
+                "default": "date_range"
+              },
+              "measurement_windows": {
+                "type": "array",
+                "description": "Measurement maturation stages available for this product. Used by any channel where billing-grade data is produced in phases rather than arriving final on day one. Examples: broadcast/linear TV (Live \u2192 C3 \u2192 C7 DVR accumulation), DOOH (tentative plays \u2192 post-IVT/fraud-check final), digital with IVT filtering (raw \u2192 GIVT filtered \u2192 SIVT filtered), podcast (7-day downloads \u2192 30-day downloads). Each window defines an accumulation period and expected data availability. When present, delivery reports reference a specific window_id. Sellers whose data is final on first delivery typically omit this.",
+                "items": {
+                  "title": "Measurement Window",
+                  "description": "A measurement maturation stage for any channel where billing-grade data is produced in phases rather than arriving final on day one. Each window represents an accumulation or processing stage with its own expected availability. Examples: broadcast/linear TV (live \u2192 C3 \u2192 C7 DVR accumulation), DOOH (tentative plays \u2192 post-IVT/fraud-check final), digital (raw impressions \u2192 GIVT filtered \u2192 SIVT filtered), podcast (7-day downloads \u2192 30-day downloads), audio/radio (tentative \u2192 diary/panel-certified). Sellers whose data is final on first delivery omit this.",
+                  "type": "object",
+                  "properties": {
+                    "window_id": {
+                      "type": "string",
+                      "maxLength": 50,
+                      "description": "Identifier for this maturation stage. Standard broadcast values: 'live' (real-time viewers only), 'c3' (live + 3 days time-shifted), 'c7' (live + 7 days time-shifted). Standard values for other channels include 'tentative' (provisional data available quickly), 'final' (post-processing certified data), 'post_ivt' (digital after invalid-traffic filtering), 'post_sivt' (digital after sophisticated-IVT filtering), 'downloads_7d' / 'downloads_30d' (podcast download maturation). Sellers may define custom IDs.",
+                      "examples": [
+                        "live",
+                        "c3",
+                        "c7",
+                        "tentative",
+                        "final",
+                        "post_ivt",
+                        "downloads_30d"
+                      ]
+                    },
+                    "description": {
+                      "type": "string",
+                      "maxLength": 500,
+                      "description": "Human-readable description of what this window measures",
+                      "examples": [
+                        "Live broadcast impressions only",
+                        "Live plus 7 days of time-shifted viewing",
+                        "Tentative plays before IVT and fraud-check processing",
+                        "Final plays after IVT and fraud-check processing",
+                        "Impressions after sophisticated invalid-traffic filtering"
+                      ]
+                    },
+                    "duration_days": {
+                      "type": "integer",
+                      "description": "Number of days of accumulation included in this window before processing begins. For broadcast, this is DVR accumulation (0 = live only, 3 = live + 3 days DVR, 7 = live + 7 days DVR). For channels without an accumulation period (DOOH tentative\u2192final, digital IVT filtering), this is 0 \u2014 maturation is entirely vendor processing time captured in expected_availability_days.",
+                      "minimum": 0
+                    },
+                    "expected_availability_days": {
+                      "type": "integer",
+                      "description": "Expected number of days after delivery before this window's data is available from the measurement vendor. Captures accumulation time plus vendor processing time. Examples: broadcast C7 from VideoAmp ~22 days (7-day accumulation + ~15-day processing); DOOH tentative plays same-day; DOOH final (post-IVT/fraud-check) ~1 day; digital post-SIVT ~2\u20133 days.",
+                      "minimum": 0
+                    },
+                    "is_guarantee_basis": {
+                      "type": "boolean",
+                      "description": "Whether this window is the basis for delivery guarantees, reconciliation, and invoicing. A product typically has one guarantee basis window (e.g., C7 for most US broadcast, post-IVT final for DOOH). Buyers reconcile against the guarantee basis window's final numbers."
+                    }
+                  },
+                  "required": [
+                    "window_id",
+                    "duration_days"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1,
+                "uniqueItems": true
+              }
+            },
+            "required": [
+              "available_reporting_frequencies",
+              "expected_delay_minutes",
+              "timezone",
+              "supports_webhooks",
+              "available_metrics",
+              "date_range_support"
+            ],
+            "additionalProperties": true
+          },
+          "creative_policy": {
+            "title": "Creative Policy",
+            "description": "Creative requirements and restrictions for a product",
+            "type": "object",
+            "properties": {
+              "co_branding": {
+                "title": "Co-Branding Requirement",
+                "description": "Co-branding requirement",
+                "type": "string",
+                "enum": [
+                  "required",
+                  "optional",
+                  "none"
+                ]
+              },
+              "landing_page": {
+                "title": "Landing Page Requirement",
+                "description": "Landing page requirements",
+                "type": "string",
+                "enum": [
+                  "any",
+                  "retailer_site_only",
+                  "must_include_retailer"
+                ]
+              },
+              "templates_available": {
+                "type": "boolean",
+                "description": "Whether creative templates are provided"
+              },
+              "provenance_required": {
+                "type": "boolean",
+                "description": "Whether creatives must include provenance metadata. When true, the seller requires buyers to attach provenance declarations to creative submissions. The seller may independently verify claims via get_creative_features."
+              }
+            },
+            "required": [
+              "co_branding",
+              "landing_page",
+              "templates_available"
+            ],
+            "additionalProperties": true
+          },
+          "is_custom": {
+            "type": "boolean",
+            "description": "Whether this is a custom product"
+          },
+          "property_targeting_allowed": {
+            "type": "boolean",
+            "default": false,
+            "description": "Whether buyers can filter this product to a subset of its publisher_properties. When false (default), the product is 'all or nothing' - buyers must accept all properties or the product is excluded from property_list filtering results."
+          },
+          "data_provider_signals": {
+            "type": "array",
+            "description": "Data provider signals available for this product. Buyers fetch signal definitions from each data provider's adagents.json and can verify agent authorization.",
+            "items": {
+              "title": "Data Provider Signal Selector",
+              "description": "Selects signals from a data provider's adagents.json catalog. Used for product definitions and agent authorization. Supports three selection patterns: all signals, specific IDs, or by tags.",
+              "discriminator": {
+                "propertyName": "selection_type"
+              },
+              "oneOf": [
+                {
+                  "type": "object",
+                  "description": "Select all signals from the data provider",
+                  "properties": {
+                    "data_provider_domain": {
+                      "type": "string",
+                      "description": "Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "selection_type": {
+                      "type": "string",
+                      "const": "all",
+                      "description": "Discriminator indicating all signals from this data provider are included"
+                    }
+                  },
+                  "required": [
+                    "data_provider_domain",
+                    "selection_type"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "description": "Select specific signals by ID",
+                  "properties": {
+                    "data_provider_domain": {
+                      "type": "string",
+                      "description": "Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "selection_type": {
+                      "type": "string",
+                      "const": "by_id",
+                      "description": "Discriminator indicating selection by specific signal IDs"
+                    },
+                    "signal_ids": {
+                      "type": "array",
+                      "description": "Specific signal IDs from the data provider's catalog",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[a-zA-Z0-9_-]+$"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "data_provider_domain",
+                    "selection_type",
+                    "signal_ids"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "description": "Select signals by tag membership",
+                  "properties": {
+                    "data_provider_domain": {
+                      "type": "string",
+                      "description": "Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "selection_type": {
+                      "type": "string",
+                      "const": "by_tag",
+                      "description": "Discriminator indicating selection by signal tags"
+                    },
+                    "signal_tags": {
+                      "type": "array",
+                      "description": "Signal tags from the data provider's catalog. Selector covers all signals with these tags",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[a-z0-9_-]+$"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "data_provider_domain",
+                    "selection_type",
+                    "signal_tags"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            }
+          },
+          "signal_targeting_allowed": {
+            "type": "boolean",
+            "default": false,
+            "description": "Whether buyers can filter this product to a subset of its data_provider_signals. When false (default), the product includes all listed signals as a bundle. When true, buyers can target specific signals."
+          },
+          "catalog_types": {
+            "type": "array",
+            "description": "Catalog types this product supports for catalog-driven campaigns. A sponsored product listing declares [\"product\"], a job board declares [\"job\", \"offering\"]. Buyers match synced catalogs to products via this field.",
+            "items": {
+              "title": "Catalog Type",
+              "description": "The type of catalog feed. Determines the item schema and how the platform resolves catalog items. Multiple catalog types can be synced to the same account and referenced together in creatives.",
+              "type": "string",
+              "enum": [
+                "offering",
+                "product",
+                "inventory",
+                "store",
+                "promotion",
+                "hotel",
+                "flight",
+                "job",
+                "vehicle",
+                "real_estate",
+                "education",
+                "destination",
+                "app"
+              ]
+            },
+            "uniqueItems": true,
+            "minItems": 1
+          },
+          "metric_optimization": {
+            "type": "object",
+            "description": "Metric optimization capabilities for this product. Presence indicates the product supports optimization_goals with kind: 'metric'. No event source or conversion tracking setup required \u2014 the seller tracks these metrics natively.",
+            "properties": {
+              "supported_metrics": {
+                "type": "array",
+                "description": "Metric kinds this product can optimize for. Buyers should only request metric goals for kinds listed here.",
+                "items": {
+                  "type": "string",
+                  "enum": [
+                    "clicks",
+                    "views",
+                    "completed_views",
+                    "viewed_seconds",
+                    "attention_seconds",
+                    "attention_score",
+                    "engagements",
+                    "follows",
+                    "saves",
+                    "profile_visits",
+                    "reach"
+                  ]
+                },
+                "minItems": 1
+              },
+              "supported_reach_units": {
+                "type": "array",
+                "description": "Reach units this product can optimize for. Required when supported_metrics includes 'reach'. Buyers must set reach_unit to a value in this list on reach optimization goals \u2014 sellers reject unsupported values.",
+                "items": {
+                  "title": "Reach Unit",
+                  "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                  "type": "string",
+                  "enum": [
+                    "individuals",
+                    "households",
+                    "devices",
+                    "accounts",
+                    "cookies",
+                    "custom"
+                  ],
+                  "enumDescriptions": {
+                    "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                    "households": "Unique households or TV homes.",
+                    "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                    "accounts": "Unique logged-in accounts (platform-specific identity).",
+                    "cookies": "Unique browser cookies.",
+                    "custom": "Publisher-defined reach unit. Describe in ext."
+                  }
+                },
+                "minItems": 1
+              },
+              "supported_view_durations": {
+                "type": "array",
+                "description": "Video view duration thresholds (in seconds) this product supports for completed_views goals. Only relevant when supported_metrics includes 'completed_views'. When absent, the seller uses their platform default. Buyers must set view_duration_seconds to a value in this list \u2014 sellers reject unsupported values.",
+                "items": {
+                  "type": "number",
+                  "exclusiveMinimum": 0
+                }
+              },
+              "supported_targets": {
+                "type": "array",
+                "description": "Target kinds available for metric goals on this product. Values match target.kind on the optimization goal. Only these target kinds are accepted \u2014 goals with unlisted target kinds will be rejected. When omitted, buyers can set target-less metric goals (maximize volume within budget) but cannot set specific targets.",
+                "items": {
+                  "type": "string",
+                  "enum": [
+                    "cost_per",
+                    "threshold_rate"
+                  ]
+                }
+              }
+            },
+            "required": [
+              "supported_metrics"
+            ],
+            "additionalProperties": true
+          },
+          "max_optimization_goals": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Maximum number of optimization_goals this product accepts on a package. When absent, no limit is declared. Most social platforms accept only 1 goal \u2014 buyers sending arrays longer than this value should expect the seller to use only the highest-priority (lowest priority number) goal."
+          },
+          "measurement_readiness": {
+            "title": "Measurement Readiness",
+            "description": "Assessment of whether the buyer's event source setup is sufficient for this product to optimize effectively. Only present when the seller can evaluate the buyer's account context. Buyers should check this before creating media buys with event-based optimization goals.",
+            "type": "object",
+            "properties": {
+              "status": {
+                "title": "Assessment Status",
+                "description": "Overall measurement readiness level for this product given the buyer's event setup. 'insufficient' means the product cannot optimize effectively with the current setup.",
+                "type": "string",
+                "enum": [
+                  "insufficient",
+                  "minimum",
+                  "good",
+                  "excellent"
+                ],
+                "enumDescriptions": {
+                  "insufficient": "Setup incomplete or event quality too low \u2014 optimization cannot run",
+                  "minimum": "Functional but data quality limits optimization effectiveness",
+                  "good": "Meets quality thresholds for most optimization goals",
+                  "excellent": "Exceeds quality thresholds across all dimensions"
+                }
+              },
+              "required_event_types": {
+                "type": "array",
+                "description": "Event types this product needs for effective optimization. Buyers should ensure their event sources cover these types.",
+                "items": {
+                  "title": "Event Type",
+                  "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                  "type": "string",
+                  "enum": [
+                    "page_view",
+                    "view_content",
+                    "select_content",
+                    "select_item",
+                    "search",
+                    "share",
+                    "add_to_cart",
+                    "remove_from_cart",
+                    "viewed_cart",
+                    "add_to_wishlist",
+                    "initiate_checkout",
+                    "add_payment_info",
+                    "purchase",
+                    "refund",
+                    "lead",
+                    "qualify_lead",
+                    "close_convert_lead",
+                    "disqualify_lead",
+                    "complete_registration",
+                    "subscribe",
+                    "start_trial",
+                    "app_install",
+                    "app_launch",
+                    "contact",
+                    "schedule",
+                    "donate",
+                    "submit_application",
+                    "custom"
+                  ],
+                  "enumDescriptions": {
+                    "page_view": "User viewed a page",
+                    "view_content": "User viewed specific content (product, article, etc.)",
+                    "select_content": "User selected or clicked on content (article, video, etc.)",
+                    "select_item": "User selected a specific product or item from a list",
+                    "search": "User performed a search",
+                    "share": "User shared content via social or messaging",
+                    "add_to_cart": "User added an item to cart",
+                    "remove_from_cart": "User removed an item from cart",
+                    "viewed_cart": "User viewed their shopping cart",
+                    "add_to_wishlist": "User added an item to a wishlist",
+                    "initiate_checkout": "User started checkout process",
+                    "add_payment_info": "User added payment information",
+                    "purchase": "User completed a purchase",
+                    "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                    "lead": "User expressed interest (form submission, signup, etc.)",
+                    "qualify_lead": "Lead qualified by sales or scoring criteria",
+                    "close_convert_lead": "Lead converted to a customer or closed deal",
+                    "disqualify_lead": "Lead disqualified or marked as not viable",
+                    "complete_registration": "User completed account registration",
+                    "subscribe": "User subscribed to a service or newsletter",
+                    "start_trial": "User started a free trial",
+                    "app_install": "User installed an application",
+                    "app_launch": "User launched an application",
+                    "contact": "User initiated contact (call, message, etc.)",
+                    "schedule": "User scheduled an appointment or event",
+                    "donate": "User made a donation",
+                    "submit_application": "User submitted an application (loan, job, etc.)",
+                    "custom": "Custom event type (specify in custom_event_name)"
+                  }
+                },
+                "minItems": 1
+              },
+              "missing_event_types": {
+                "type": "array",
+                "description": "Event types this product requires that the buyer has not configured. Empty or absent when all required types are covered.",
+                "items": {
+                  "title": "Event Type",
+                  "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                  "type": "string",
+                  "enum": [
+                    "page_view",
+                    "view_content",
+                    "select_content",
+                    "select_item",
+                    "search",
+                    "share",
+                    "add_to_cart",
+                    "remove_from_cart",
+                    "viewed_cart",
+                    "add_to_wishlist",
+                    "initiate_checkout",
+                    "add_payment_info",
+                    "purchase",
+                    "refund",
+                    "lead",
+                    "qualify_lead",
+                    "close_convert_lead",
+                    "disqualify_lead",
+                    "complete_registration",
+                    "subscribe",
+                    "start_trial",
+                    "app_install",
+                    "app_launch",
+                    "contact",
+                    "schedule",
+                    "donate",
+                    "submit_application",
+                    "custom"
+                  ],
+                  "enumDescriptions": {
+                    "page_view": "User viewed a page",
+                    "view_content": "User viewed specific content (product, article, etc.)",
+                    "select_content": "User selected or clicked on content (article, video, etc.)",
+                    "select_item": "User selected a specific product or item from a list",
+                    "search": "User performed a search",
+                    "share": "User shared content via social or messaging",
+                    "add_to_cart": "User added an item to cart",
+                    "remove_from_cart": "User removed an item from cart",
+                    "viewed_cart": "User viewed their shopping cart",
+                    "add_to_wishlist": "User added an item to a wishlist",
+                    "initiate_checkout": "User started checkout process",
+                    "add_payment_info": "User added payment information",
+                    "purchase": "User completed a purchase",
+                    "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                    "lead": "User expressed interest (form submission, signup, etc.)",
+                    "qualify_lead": "Lead qualified by sales or scoring criteria",
+                    "close_convert_lead": "Lead converted to a customer or closed deal",
+                    "disqualify_lead": "Lead disqualified or marked as not viable",
+                    "complete_registration": "User completed account registration",
+                    "subscribe": "User subscribed to a service or newsletter",
+                    "start_trial": "User started a free trial",
+                    "app_install": "User installed an application",
+                    "app_launch": "User launched an application",
+                    "contact": "User initiated contact (call, message, etc.)",
+                    "schedule": "User scheduled an appointment or event",
+                    "donate": "User made a donation",
+                    "submit_application": "User submitted an application (loan, job, etc.)",
+                    "custom": "Custom event type (specify in custom_event_name)"
+                  }
+                }
+              },
+              "issues": {
+                "type": "array",
+                "description": "Actionable issues preventing full measurement readiness. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.",
+                "items": {
+                  "title": "Diagnostic Issue",
+                  "description": "An actionable issue detected during a health or readiness assessment. Used by event source health and measurement readiness to surface problems and recommendations.",
+                  "type": "object",
+                  "properties": {
+                    "severity": {
+                      "type": "string",
+                      "enum": [
+                        "error",
+                        "warning",
+                        "info"
+                      ],
+                      "description": "'error': blocks optimization until resolved. 'warning': optimization works but effectiveness is reduced. 'info': suggestion for improvement."
+                    },
+                    "message": {
+                      "type": "string",
+                      "description": "Human/agent-readable description of the issue and how to resolve it."
+                    }
+                  },
+                  "required": [
+                    "severity",
+                    "message"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "notes": {
+                "type": "string",
+                "description": "Seller explanation of the readiness assessment, recommendations for improvement, or context about what the buyer needs to change."
+              }
+            },
+            "required": [
+              "status"
+            ],
+            "additionalProperties": true
+          },
+          "conversion_tracking": {
+            "type": "object",
+            "description": "Conversion event tracking for this product. Presence indicates the product supports optimization_goals with kind: 'event'. Seller-level capabilities (supported event types, UID types, attribution windows) are declared in get_adcp_capabilities.",
+            "properties": {
+              "action_sources": {
+                "type": "array",
+                "description": "Action sources relevant to this product (e.g. a retail media product might have 'in_store' and 'website', while a display product might only have 'website')",
+                "items": {
+                  "title": "Action Source",
+                  "description": "Where the conversion event originated",
+                  "type": "string",
+                  "enum": [
+                    "website",
+                    "app",
+                    "offline",
+                    "phone_call",
+                    "chat",
+                    "email",
+                    "in_store",
+                    "system_generated",
+                    "other"
+                  ],
+                  "enumDescriptions": {
+                    "website": "Event occurred on a website",
+                    "app": "Event occurred in a mobile or desktop app",
+                    "offline": "Event occurred offline (imported data)",
+                    "phone_call": "Event originated from a phone call",
+                    "chat": "Event originated from a chat conversation",
+                    "email": "Event originated from an email interaction",
+                    "in_store": "Event occurred at a physical retail location",
+                    "system_generated": "Event generated by an automated system",
+                    "other": "Other source (specify in ext)"
+                  }
+                },
+                "minItems": 1
+              },
+              "supported_targets": {
+                "type": "array",
+                "description": "Target kinds available for event goals on this product. Values match target.kind on the optimization goal. cost_per: target cost per conversion event. per_ad_spend: target return on ad spend (requires value_field on event sources). maximize_value: maximize total conversion value without a specific ratio target (requires value_field). Only these target kinds are accepted \u2014 goals with unlisted target kinds will be rejected. A goal without a target implicitly maximizes conversion count within budget \u2014 no declaration needed for that mode. When omitted, buyers can still set target-less event goals.",
+                "items": {
+                  "type": "string",
+                  "enum": [
+                    "cost_per",
+                    "per_ad_spend",
+                    "maximize_value"
+                  ]
+                },
+                "minItems": 1
+              },
+              "platform_managed": {
+                "type": "boolean",
+                "description": "Whether the seller provides its own always-on measurement (e.g. Amazon sales attribution for Amazon advertisers). When true, sync_event_sources response will include seller-managed event sources with managed_by='seller'."
+              }
+            },
+            "additionalProperties": true
+          },
+          "catalog_match": {
+            "type": "object",
+            "description": "When the buyer provides a catalog on get_products, indicates which catalog items are eligible for this product. Only present for products where catalog matching is relevant (e.g., sponsored product listings, job boards, hotel ads).",
+            "properties": {
+              "matched_gtins": {
+                "type": "array",
+                "description": "GTINs from the buyer's catalog that are eligible on this product's inventory. Standard GTIN formats (GTIN-8 through GTIN-14). Only present for product-type catalogs with GTIN matching.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[0-9]{8,14}$"
+                }
+              },
+              "matched_ids": {
+                "type": "array",
+                "description": "Item IDs from the buyer's catalog that matched this product's inventory. The ID type depends on the catalog type and content_id_type (e.g., SKUs for product catalogs, job_ids for job catalogs, offering_ids for offering catalogs).",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "matched_count": {
+                "type": "integer",
+                "description": "Number of catalog items that matched this product's inventory.",
+                "minimum": 0
+              },
+              "submitted_count": {
+                "type": "integer",
+                "description": "Total catalog items evaluated from the buyer's catalog.",
+                "minimum": 0
+              }
+            },
+            "required": [
+              "submitted_count"
+            ]
+          },
+          "brief_relevance": {
+            "type": "string",
+            "description": "Explanation of why this product matches the brief (only included when brief is provided)"
+          },
+          "expires_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "Expiration timestamp. After this time, the product may no longer be available for purchase and create_media_buy may reject packages referencing it."
+          },
+          "product_card": {
+            "type": "object",
+            "description": "Optional standard visual card (300x400px) for displaying this product in user interfaces. Can be rendered via preview_creative or pre-generated.",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Creative format defining the card layout (typically product_card_standard)",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "manifest": {
+                "type": "object",
+                "description": "Asset manifest for rendering the card, structure defined by the format",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "manifest"
+            ],
+            "additionalProperties": true
+          },
+          "product_card_detailed": {
+            "type": "object",
+            "description": "Optional detailed card with carousel and full specifications. Provides rich product presentation similar to media kit pages.",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Creative format defining the detailed card layout (typically product_card_detailed)",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "manifest": {
+                "type": "object",
+                "description": "Asset manifest for rendering the detailed card, structure defined by the format",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "manifest"
+            ],
+            "additionalProperties": true
+          },
+          "collections": {
+            "type": "array",
+            "description": "Collections available in this product. Each entry references collections declared in an adagents.json by domain and collection ID. Buyers resolve full collection objects from the referenced adagents.json.",
+            "items": {
+              "title": "Collection Selector",
+              "description": "References collections declared in an adagents.json. Buyers resolve full collection objects by fetching the adagents.json at the given domain and matching collection_ids against its collections array.",
+              "type": "object",
+              "properties": {
+                "publisher_domain": {
+                  "type": "string",
+                  "description": "Domain where the adagents.json declaring these collections is hosted (e.g., 'mrbeast.com'). The collections array in that file contains the authoritative collection definitions.",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "collection_ids": {
+                  "type": "array",
+                  "description": "Collection IDs from the adagents.json collections array. Each ID must match a collection_id declared in that file.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "publisher_domain",
+                "collection_ids"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "collection_targeting_allowed": {
+            "type": "boolean",
+            "default": false,
+            "description": "Whether buyers can target a subset of this product's collections. When false (default), the product is a bundle \u2014 buyers get all listed collections. When true, buyers can select specific collections in the media buy."
+          },
+          "installments": {
+            "type": "array",
+            "description": "Specific installments included in this product. Each installment references its parent collection via collection_id when the product spans multiple collections. When absent with collections present, the product covers the collections broadly (run-of-collection).",
+            "items": {
+              "title": "Installment",
+              "description": "A single bookable unit within a collection \u2014 one episode, issue, event, or rotation period. The parent collection's kind indicates how to interpret each installment: TV/podcast episodes, print issues, live event airings, newsletter editions, or DOOH rotation periods. Installments inherit collection-level fields they don't override: content_rating defaults to the collection's baseline, guest_talent is additive to the collection's recurring talent, and topics add context beyond the collection's genre.",
+              "type": "object",
+              "properties": {
+                "installment_id": {
+                  "type": "string",
+                  "description": "Unique identifier for this installment within the collection"
+                },
+                "collection_id": {
+                  "type": "string",
+                  "description": "Parent collection reference. Required when the product spans multiple collections. Maps to a collection_id declared in one of the publishers' adagents.json files referenced by the product's collection selectors."
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Installment title"
+                },
+                "season": {
+                  "type": "string",
+                  "description": "Season identifier (e.g., '1', '2024', 'spring_2026')"
+                },
+                "installment_number": {
+                  "type": "string",
+                  "description": "Installment number within the season (e.g., '3', '47')"
+                },
+                "scheduled_at": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When the installment airs or publishes (ISO 8601)"
+                },
+                "status": {
+                  "title": "Installment Status",
+                  "description": "Lifecycle status of the installment",
+                  "type": "string",
+                  "enum": [
+                    "scheduled",
+                    "tentative",
+                    "live",
+                    "postponed",
+                    "cancelled",
+                    "aired",
+                    "published"
+                  ],
+                  "enumDescriptions": {
+                    "scheduled": "Confirmed, will happen as planned",
+                    "tentative": "May not happen (e.g., playoff Game 7 depends on Game 6)",
+                    "live": "Currently airing or streaming right now",
+                    "postponed": "Was scheduled but delayed to a future date",
+                    "cancelled": "Will not happen",
+                    "aired": "Already broadcast (live/linear content)",
+                    "published": "Already released (on-demand content)"
+                  }
+                },
+                "duration_seconds": {
+                  "type": "integer",
+                  "minimum": 0,
+                  "description": "Expected duration of the installment in seconds"
+                },
+                "flexible_end": {
+                  "type": "boolean",
+                  "description": "Whether the end time is approximate (live events, sports)"
+                },
+                "valid_until": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this installment data expires and should be re-queried. Agents should re-query before committing budget to products with tentative installments."
+                },
+                "content_rating": {
+                  "title": "Content Rating",
+                  "description": "Installment-specific content rating. Overrides the collection's baseline content_rating when present.",
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Content Rating System",
+                      "description": "Rating system used",
+                      "type": "string",
+                      "enum": [
+                        "tv_parental",
+                        "mpaa",
+                        "podcast",
+                        "esrb",
+                        "bbfc",
+                        "fsk",
+                        "acb",
+                        "chvrs",
+                        "csa",
+                        "pegi",
+                        "custom"
+                      ],
+                      "enumDescriptions": {
+                        "tv_parental": "US TV Parental Guidelines (TV-Y, TV-Y7, TV-G, TV-PG, TV-14, TV-MA)",
+                        "mpaa": "Motion Picture Association film ratings (G, PG, PG-13, R, NC-17)",
+                        "podcast": "Podcast content advisories (clean, explicit)",
+                        "esrb": "Entertainment Software Rating Board (E, E10+, T, M, AO) \u2014 US/Canada",
+                        "bbfc": "British Board of Film Classification (U, PG, 12A, 12, 15, 18, R18)",
+                        "fsk": "Freiwillige Selbstkontrolle der Filmwirtschaft (0, 6, 12, 16, 18) \u2014 Germany",
+                        "acb": "Australian Classification Board (G, PG, M, MA15+, R18+)",
+                        "chvrs": "Canadian Home Video Rating System (G, PG, 14A, 18A, R, A)",
+                        "csa": "Conseil superieur de l'audiovisuel / Arcom (-10, -12, -16, -18) \u2014 France",
+                        "pegi": "Pan European Game Information (3, 7, 12, 16, 18) \u2014 pan-European gaming",
+                        "custom": "Publisher-defined rating system with free-form values"
+                      }
+                    },
+                    "rating": {
+                      "type": "string",
+                      "description": "Rating value within the system (e.g., 'TV-PG', 'R', 'explicit')"
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "rating"
+                  ],
+                  "additionalProperties": true
+                },
+                "topics": {
+                  "type": "array",
+                  "description": "Content topics for this installment. Uses the same taxonomy as the collection's genre_taxonomy when present. Enables installment-level brand safety evaluation beyond content_rating.",
+                  "items": {
+                    "type": "string"
+                  }
+                },
+                "special": {
+                  "title": "Special",
+                  "description": "Installment-specific event context. When present, this installment is anchored to a real-world event. Overrides the collection-level special when present.",
+                  "type": "object",
+                  "properties": {
+                    "name": {
+                      "type": "string",
+                      "description": "Name of the event (e.g., 'Olympics 2028', 'Super Bowl LXI')"
+                    },
+                    "category": {
+                      "title": "Special Category",
+                      "description": "Category of the event",
+                      "type": "string",
+                      "enum": [
+                        "awards",
+                        "championship",
+                        "concert",
+                        "conference",
+                        "election",
+                        "festival",
+                        "gala",
+                        "holiday",
+                        "premiere",
+                        "product_launch",
+                        "reunion",
+                        "tribute"
+                      ],
+                      "enumDescriptions": {
+                        "awards": "Awards ceremony (Grammys, Emmys, Oscars)",
+                        "championship": "Championship or tournament event (Super Bowl, World Cup, Olympics)",
+                        "concert": "Live concert or music event",
+                        "conference": "Industry conference or summit",
+                        "election": "Election coverage or political event",
+                        "festival": "Festival event (film, music, cultural)",
+                        "gala": "Gala, fundraiser, or formal event",
+                        "holiday": "Holiday special or seasonal event",
+                        "premiere": "Premiere or launch event",
+                        "product_launch": "Product reveal or launch event",
+                        "reunion": "Reunion or anniversary special",
+                        "tribute": "Tribute or memorial special"
+                      }
+                    },
+                    "starts": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When the event starts (ISO 8601)"
+                    },
+                    "ends": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When the event ends (ISO 8601). Omit for single-day events."
+                    }
+                  },
+                  "required": [
+                    "name"
+                  ],
+                  "additionalProperties": true
+                },
+                "guest_talent": {
+                  "type": "array",
+                  "description": "Installment-specific guests and talent. Additive to the collection's recurring talent.",
+                  "items": {
+                    "title": "Talent",
+                    "description": "A person associated with a collection or installment, with an optional link to their brand.json identity",
+                    "type": "object",
+                    "properties": {
+                      "role": {
+                        "title": "Talent Role",
+                        "description": "Role of this person on the collection or installment",
+                        "type": "string",
+                        "enum": [
+                          "host",
+                          "guest",
+                          "creator",
+                          "cast",
+                          "narrator",
+                          "producer",
+                          "correspondent",
+                          "commentator",
+                          "analyst"
+                        ],
+                        "enumDescriptions": {
+                          "host": "Primary host or anchor of the collection",
+                          "guest": "Guest appearing on a specific installment",
+                          "creator": "Collection creator or showrunner",
+                          "cast": "Regular or recurring cast member",
+                          "narrator": "Narrator or voiceover",
+                          "producer": "Executive or lead producer with on-screen presence",
+                          "correspondent": "Reporter or field correspondent",
+                          "commentator": "Play-by-play or event commentator",
+                          "analyst": "Color commentator or subject matter analyst"
+                        }
+                      },
+                      "name": {
+                        "type": "string",
+                        "description": "Person's name as credited on the collection"
+                      },
+                      "brand_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to this person's brand.json entry. Enables buyer agents to evaluate the talent's brand identity and associations."
+                      }
+                    },
+                    "required": [
+                      "role",
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "ad_inventory": {
+                  "title": "Ad Inventory Configuration",
+                  "description": "Break-based ad inventory for this installment. For non-break formats (host reads, integrations), use product placements.",
+                  "type": "object",
+                  "properties": {
+                    "expected_breaks": {
+                      "type": "integer",
+                      "minimum": 0,
+                      "description": "Number of planned ad breaks in the installment"
+                    },
+                    "total_ad_seconds": {
+                      "type": "integer",
+                      "minimum": 0,
+                      "description": "Total seconds of ad time across all breaks"
+                    },
+                    "max_ad_duration_seconds": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Maximum duration in seconds for a single ad within a break. Buyers need this to know whether their creative fits."
+                    },
+                    "unplanned_breaks": {
+                      "type": "boolean",
+                      "description": "Whether ad breaks are dynamic and driven by live conditions (sports timeouts, election coverage). When false, all breaks are pre-defined."
+                    },
+                    "supported_formats": {
+                      "type": "array",
+                      "description": "Ad format types supported in breaks (e.g., 'video', 'audio', 'display')",
+                      "items": {
+                        "type": "string"
+                      }
+                    }
+                  },
+                  "required": [
+                    "expected_breaks"
+                  ],
+                  "additionalProperties": true
+                },
+                "deadlines": {
+                  "title": "Installment Deadlines",
+                  "description": "Booking, cancellation, and material submission deadlines for this installment. Present when the installment has time-sensitive inventory that requires advance commitment or material delivery.",
+                  "type": "object",
+                  "properties": {
+                    "booking_deadline": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "Last date/time to book a placement in this installment (ISO 8601). After this point, the seller will not accept new bookings."
+                    },
+                    "cancellation_deadline": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "Last date/time to cancel without penalty (ISO 8601). Cancellations after this point may incur fees per the seller's terms."
+                    },
+                    "material_deadlines": {
+                      "type": "array",
+                      "description": "Stages for creative material submission. Items MUST be in chronological order by due_at (earliest first). Typical pattern: 'draft' for raw materials the seller will process, 'final' for production-ready assets. Print example: draft artwork then press-ready PDF. Influencer example: talking points then approved script.",
+                      "items": {
+                        "title": "Material Deadline",
+                        "description": "A deadline for creative material submission. Sellers declare stages to distinguish draft materials (e.g., talking points, raw artwork) from production-ready assets (e.g., approved scripts, press-ready PDFs).",
+                        "type": "object",
+                        "properties": {
+                          "stage": {
+                            "type": "string",
+                            "description": "Submission stage identifier. Use 'draft' for materials that need seller processing and 'final' for production-ready assets. Sellers may define additional stages.",
+                            "examples": [
+                              "draft",
+                              "final"
+                            ]
+                          },
+                          "due_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When materials for this stage are due (ISO 8601)"
+                          },
+                          "label": {
+                            "type": "string",
+                            "description": "What the seller needs at this stage (e.g., 'Talking points and brand guidelines', 'Press-ready PDF with bleed')"
+                          }
+                        },
+                        "required": [
+                          "stage",
+                          "due_at"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "minProperties": 1,
+                  "additionalProperties": true
+                },
+                "derivative_of": {
+                  "type": "object",
+                  "description": "When this installment is a clip, highlight, or recap derived from a full installment. The source installment_id must reference an installment within the same response.",
+                  "properties": {
+                    "installment_id": {
+                      "type": "string",
+                      "description": "The source installment this content is derived from"
+                    },
+                    "type": {
+                      "title": "Derivative Type",
+                      "description": "What kind of derivative content this is",
+                      "type": "string",
+                      "enum": [
+                        "clip",
+                        "highlight",
+                        "recap",
+                        "trailer",
+                        "bonus"
+                      ],
+                      "enumDescriptions": {
+                        "clip": "Short excerpt from the source installment",
+                        "highlight": "Editorially curated best-of segment from the source installment",
+                        "recap": "Summary of the source installment's content",
+                        "trailer": "Promotional content for the source installment",
+                        "bonus": "Supplementary content (behind-the-scenes, extended interviews, deleted segments)"
+                      }
+                    }
+                  },
+                  "required": [
+                    "installment_id",
+                    "type"
+                  ],
+                  "additionalProperties": false
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "installment_id"
+              ],
+              "additionalProperties": true
+            }
+          },
+          "enforced_policies": {
+            "type": "array",
+            "description": "Registry policy IDs the seller enforces for this product. Enforcement level comes from the policy registry. Buyers can filter products by required policies.",
+            "items": {
+              "type": "string"
+            }
+          },
+          "trusted_match": {
+            "type": "object",
+            "description": "Trusted Match Protocol capabilities for this product. When present, the product supports real-time contextual and/or identity matching via TMP. Buyers use this to determine what response types the publisher can accept and whether brands can be selected dynamically at match time.",
+            "properties": {
+              "context_match": {
+                "type": "boolean",
+                "description": "Whether this product supports Context Match requests. When true, the publisher's TMP router will send context match requests to registered providers for this product's inventory.",
+                "default": true
+              },
+              "identity_match": {
+                "type": "boolean",
+                "description": "Whether this product supports Identity Match requests. When true, the publisher's TMP router will send identity match requests to evaluate user eligibility.",
+                "default": false
+              },
+              "response_types": {
+                "type": "array",
+                "description": "What the publisher can accept back from context match.",
+                "items": {
+                  "title": "TMP Response Type",
+                  "description": "What the publisher wants back from a TMP context match. Determines the richness level of the buyer's offer response.",
+                  "type": "string",
+                  "enum": [
+                    "activation",
+                    "catalog_items",
+                    "creative",
+                    "deal"
+                  ],
+                  "enumDescriptions": {
+                    "activation": "Binary activation with GAM key-values. Offers identify the package via package_id.",
+                    "catalog_items": "Preferred catalog items for rendering. Offers may include catalog item references.",
+                    "creative": "Inline creative manifest. Offers include full rendering details.",
+                    "deal": "Deal ID for programmatic execution. Offers include deal metadata."
+                  }
+                },
+                "minItems": 1,
+                "default": [
+                  "activation"
+                ]
+              },
+              "dynamic_brands": {
+                "type": "boolean",
+                "description": "Whether the buyer can select a brand at match time. When false (default), the brand must be specified on the media buy/package. When true, the buyer's offer can include any brand \u2014 the publisher applies approval rules at match time. Enables multi-brand agreements where the holding company or buyer agent selects brand based on context.",
+                "default": false
+              },
+              "providers": {
+                "type": "array",
+                "description": "TMP providers integrated with this product's inventory. Each entry identifies a provider by agent_url (from the registry) and declares what match types it supports for this product. The product-level context_match and identity_match booleans declare what the product supports overall; the per-provider booleans declare which provider handles each match type. Enables buyer discovery: 'find products where a specific provider does context matching.'",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "Provider's agent URL from the registry. Canonical identifier for this TMP provider."
+                    },
+                    "context_match": {
+                      "type": "boolean",
+                      "description": "Whether this provider handles context match for this product.",
+                      "default": false
+                    },
+                    "identity_match": {
+                      "type": "boolean",
+                      "description": "Whether this provider handles identity match for this product.",
+                      "default": false
+                    },
+                    "countries": {
+                      "type": "array",
+                      "description": "ISO 3166-1 alpha-2 country codes this provider serves for identity match. The router uses this to select the correct regional provider based on the request's country field. Required when identity_match is true.",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[A-Z]{2}$"
+                      },
+                      "minItems": 1
+                    },
+                    "uid_types": {
+                      "type": "array",
+                      "description": "Identity types this regional provider can resolve. The router filters providers whose uid_types includes the request's uid_type. Required when identity_match is true.",
+                      "items": {
+                        "title": "UID Type",
+                        "description": "Type of user identifier. Used in audience sync, event logging, and TMP identity match requests to tell the receiver which identity graph to resolve against.",
+                        "type": "string",
+                        "enum": [
+                          "rampid",
+                          "rampid_derived",
+                          "id5",
+                          "uid2",
+                          "euid",
+                          "pairid",
+                          "maid",
+                          "hashed_email",
+                          "publisher_first_party",
+                          "other"
+                        ],
+                        "enumDescriptions": {
+                          "rampid": "LiveRamp RampID maintained form (XY, 32 bytes on the wire)",
+                          "rampid_derived": "LiveRamp RampID derived form (Xi, 48 bytes on the wire)",
+                          "id5": "ID5 universal ID",
+                          "uid2": "Unified ID 2.0",
+                          "euid": "European Unified ID",
+                          "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+                          "maid": "Mobile Advertising ID (IDFA/GAID)",
+                          "hashed_email": "SHA-256 hashed email address",
+                          "publisher_first_party": "Publisher's own first-party identifier, opaque to buyers",
+                          "other": "Other universal ID type (specify in ext)"
+                        }
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "agent_url"
+                  ],
+                  "if": {
+                    "properties": {
+                      "identity_match": {
+                        "const": true
+                      }
+                    },
+                    "required": [
+                      "identity_match"
+                    ]
+                  },
+                  "then": {
+                    "required": [
+                      "agent_url",
+                      "countries",
+                      "uid_types"
+                    ]
+                  },
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "context_match"
+            ],
+            "additionalProperties": true
+          },
+          "material_submission": {
+            "type": "object",
+            "description": "Instructions for submitting physical creative materials (print, static OOH, cinema). Present only for products requiring physical delivery outside the digital creative assignment flow. Buyer agents MUST validate url and email domains against the seller's known domains (from adagents.json) before submitting materials. Never auto-submit without human confirmation.",
+            "properties": {
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "pattern": "^https://",
+                "description": "HTTPS URL for uploading or submitting physical creative materials"
+              },
+              "email": {
+                "type": "string",
+                "format": "email",
+                "description": "Email address for creative material submission"
+              },
+              "instructions": {
+                "type": "string",
+                "description": "Human-readable instructions for material submission (file naming conventions, shipping address, etc.)",
+                "maxLength": 2000
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "minProperties": 1,
+            "additionalProperties": true
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "product_id",
+          "name",
+          "description",
+          "publisher_properties",
+          "format_ids",
+          "delivery_type",
+          "pricing_options",
+          "reporting_capabilities"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "proposals": {
+      "type": "array",
+      "description": "Optional array of proposed media plans with budget allocations across products. Publishers include proposals when they can provide strategic guidance based on the brief. Proposals are actionable - buyers can refine them via follow-up get_products calls within the same session, or execute them directly via create_media_buy.",
+      "items": {
+        "title": "Proposal",
+        "description": "A proposed media plan with budget allocations across products. Represents the publisher's strategic recommendation for how to structure a campaign based on the brief. Proposals are actionable - buyers can execute them directly via create_media_buy by providing the proposal_id.",
+        "type": "object",
+        "properties": {
+          "proposal_id": {
+            "type": "string",
+            "description": "Unique identifier for this proposal. Used to execute it via create_media_buy.",
+            "maxLength": 255
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this media plan proposal",
+            "maxLength": 500
+          },
+          "description": {
+            "type": "string",
+            "description": "Explanation of the proposal strategy and what it achieves",
+            "maxLength": 2000
+          },
+          "allocations": {
+            "type": "array",
+            "description": "Budget allocations across products. Allocation percentages MUST sum to 100. Publishers are responsible for ensuring the sum equals 100; buyers SHOULD validate this before execution.",
+            "items": {
+              "title": "Product Allocation",
+              "description": "A budget allocation for a specific product within a proposal. Percentages across all allocations in a proposal should sum to 100.",
+              "type": "object",
+              "properties": {
+                "product_id": {
+                  "type": "string",
+                  "description": "ID of the product (must reference a product in the products array)"
+                },
+                "allocation_percentage": {
+                  "type": "number",
+                  "description": "Percentage of total budget allocated to this product (0-100)",
+                  "minimum": 0,
+                  "maximum": 100
+                },
+                "pricing_option_id": {
+                  "type": "string",
+                  "description": "Recommended pricing option ID from the product's pricing_options array"
+                },
+                "rationale": {
+                  "type": "string",
+                  "description": "Explanation of why this product and allocation are recommended"
+                },
+                "sequence": {
+                  "type": "integer",
+                  "description": "Optional ordering hint for multi-line-item plans (1-based)",
+                  "minimum": 1
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "Categorical tags for this allocation (e.g., 'desktop', 'german', 'mobile') - useful for grouping/filtering allocations by dimension",
+                  "items": {
+                    "type": "string"
+                  }
+                },
+                "start_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "Recommended flight start date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range."
+                },
+                "end_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "Recommended flight end date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range."
+                },
+                "daypart_targets": {
+                  "type": "array",
+                  "description": "Recommended time windows for this allocation in spot-plan proposals.",
+                  "items": {
+                    "title": "Daypart Target",
+                    "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+                    "type": "object",
+                    "properties": {
+                      "days": {
+                        "type": "array",
+                        "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
+                        "items": {
+                          "title": "Day of Week",
+                          "description": "Days of the week for daypart targeting",
+                          "type": "string",
+                          "enum": [
+                            "monday",
+                            "tuesday",
+                            "wednesday",
+                            "thursday",
+                            "friday",
+                            "saturday",
+                            "sunday"
+                          ]
+                        },
+                        "minItems": 1
+                      },
+                      "start_hour": {
+                        "type": "integer",
+                        "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+                        "minimum": 0,
+                        "maximum": 23
+                      },
+                      "end_hour": {
+                        "type": "integer",
+                        "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
+                        "minimum": 1,
+                        "maximum": 24
+                      },
+                      "label": {
+                        "type": "string",
+                        "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+                      }
+                    },
+                    "required": [
+                      "days",
+                      "start_hour",
+                      "end_hour"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "minItems": 1
+                },
+                "forecast": {
+                  "title": "Delivery Forecast",
+                  "description": "Forecasted delivery metrics for this allocation",
+                  "type": "object",
+                  "properties": {
+                    "points": {
+                      "type": "array",
+                      "description": "Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.",
+                      "items": {
+                        "title": "Forecast Point",
+                        "description": "A forecast data point. When budget is present, the point pairs a spend level with expected delivery \u2014 multiple points at ascending budgets form a curve. When budget is omitted, the point represents total available inventory for the requested targeting and dates, independent of spend.",
+                        "type": "object",
+                        "properties": {
+                          "label": {
+                            "type": "string",
+                            "maxLength": 128,
+                            "description": "Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+                            "examples": [
+                              "Primetime",
+                              "Morning Drive",
+                              "Large Format Transit"
+                            ]
+                          },
+                          "budget": {
+                            "type": "number",
+                            "description": "Budget amount for this forecast point. Required for spend curves; omit for availability forecasts where the metrics represent total available inventory. For allocation-level forecasts, this is the absolute budget for that allocation (not the percentage). For proposal-level forecasts, this is the total proposal budget. When omitted, use metrics.spend to express the estimated cost of the available inventory.",
+                            "minimum": 0
+                          },
+                          "metrics": {
+                            "type": "object",
+                            "description": "Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { \"mid\": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory \u2014 use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).",
+                            "properties": {
+                              "audience_size": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "reach": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "frequency": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "impressions": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "clicks": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "spend": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "views": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "completed_views": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "grps": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "engagements": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "follows": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "saves": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "profile_visits": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "measured_impressions": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "downloads": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              },
+                              "plays": {
+                                "title": "Forecast Range",
+                                "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                                "type": "object",
+                                "properties": {
+                                  "low": {
+                                    "type": "number",
+                                    "description": "Conservative (low-end) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "mid": {
+                                    "type": "number",
+                                    "description": "Expected (most likely) forecast value",
+                                    "minimum": 0
+                                  },
+                                  "high": {
+                                    "type": "number",
+                                    "description": "Optimistic (high-end) forecast value",
+                                    "minimum": 0
+                                  }
+                                },
+                                "anyOf": [
+                                  {
+                                    "required": [
+                                      "mid"
+                                    ]
+                                  },
+                                  {
+                                    "required": [
+                                      "low",
+                                      "high"
+                                    ]
+                                  }
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": {
+                              "title": "Forecast Range",
+                              "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                              "type": "object",
+                              "properties": {
+                                "low": {
+                                  "type": "number",
+                                  "description": "Conservative (low-end) forecast value",
+                                  "minimum": 0
+                                },
+                                "mid": {
+                                  "type": "number",
+                                  "description": "Expected (most likely) forecast value",
+                                  "minimum": 0
+                                },
+                                "high": {
+                                  "type": "number",
+                                  "description": "Optimistic (high-end) forecast value",
+                                  "minimum": 0
+                                }
+                              },
+                              "anyOf": [
+                                {
+                                  "required": [
+                                    "mid"
+                                  ]
+                                },
+                                {
+                                  "required": [
+                                    "low",
+                                    "high"
+                                  ]
+                                }
+                              ],
+                              "additionalProperties": true
+                            }
+                          }
+                        },
+                        "required": [
+                          "metrics"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "minItems": 1
+                    },
+                    "forecast_range_unit": {
+                      "title": "Forecast Range Unit",
+                      "description": "How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package.",
+                      "type": "string",
+                      "enum": [
+                        "spend",
+                        "availability",
+                        "reach_freq",
+                        "weekly",
+                        "daily",
+                        "clicks",
+                        "conversions",
+                        "package"
+                      ],
+                      "enumDescriptions": {
+                        "spend": "Points at ascending budget levels. Standard budget curve showing how delivery metrics scale with spend. Default when field is omitted.",
+                        "availability": "Each point represents total available inventory for the requested targeting and dates. Budget is omitted \u2014 metrics express what exists, not what a given spend level buys. Use metrics.spend to express the estimated cost. Typical for guaranteed and direct-sold inventory where the forecast is an availability check.",
+                        "reach_freq": "Points at ascending reach/frequency targets. Used in broadcast planning where the publisher shows how cost scales with frequency goals.",
+                        "weekly": "Metrics are per-week values. Budget refers to total campaign spend. Frequency of 3.2 means 3.2 exposures per week.",
+                        "daily": "Metrics are per-day values. Budget refers to total campaign spend.",
+                        "clicks": "Points at ascending click targets. Used in performance campaigns where the buyer specifies click goals.",
+                        "conversions": "Points at ascending conversion targets. Used in goal-based planning (e.g., Meta-style 'tell me your goal, I'll tell you the budget').",
+                        "package": "Each point represents a distinct inventory package (e.g., Good/Better/Best tiers, daypart packages, sponsorships). Points are not levels on a spend curve \u2014 they are separate products with different inventory compositions. Used by broadcast TV, audio, and DOOH sellers who sell packages rather than impressions at variable spend levels."
+                      }
+                    },
+                    "method": {
+                      "title": "Forecast Method",
+                      "description": "Method used to produce this forecast",
+                      "type": "string",
+                      "enum": [
+                        "estimate",
+                        "modeled",
+                        "guaranteed"
+                      ],
+                      "enumDescriptions": {
+                        "estimate": "Rough approximation based on historical averages or heuristics. No delivery commitment.",
+                        "modeled": "Forecast derived from platform-specific predictive models or historical data. Publisher uses this to set expectations but does not guarantee delivery.",
+                        "guaranteed": "Contractually committed delivery levels backed by reserved inventory"
+                      }
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code for monetary values in this forecast (spend, budget)"
+                    },
+                    "demographic_system": {
+                      "title": "Demographic System",
+                      "description": "Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation.",
+                      "type": "string",
+                      "enum": [
+                        "nielsen",
+                        "barb",
+                        "agf",
+                        "oztam",
+                        "mediametrie",
+                        "custom"
+                      ],
+                      "enumDescriptions": {
+                        "nielsen": "Nielsen notation. Prefix: P(ersons), M(en), W(omen), A(dults), C(hildren), T(eens) + age range. Examples: P18-49, M25-54, W35+",
+                        "barb": "BARB (UK). NRS social grade + age bands. Examples: ABC1 Adults, 16-34, Adults",
+                        "agf": "AGF Videoforschung (Germany). Erwachsene notation + age bands. Examples: E 14-49, E 14+",
+                        "oztam": "OzTAM (Australia). Age/gender bands, 4+ measurement universe",
+                        "mediametrie": "Mediametrie (France). Named segments + age bands",
+                        "custom": "Publisher-defined demographic notation"
+                      }
+                    },
+                    "demographic": {
+                      "type": "string",
+                      "description": "Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.",
+                      "examples": [
+                        "P18-49",
+                        "A25-54",
+                        "W35+",
+                        "M18-34"
+                      ]
+                    },
+                    "measurement_source": {
+                      "type": "string",
+                      "maxLength": 64,
+                      "pattern": "^[a-z0-9_]+$",
+                      "description": "Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation \u2014 measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.",
+                      "examples": [
+                        "nielsen",
+                        "videoamp",
+                        "comscore",
+                        "geopath",
+                        "barb",
+                        "agf",
+                        "oztam",
+                        "kantar",
+                        "barc",
+                        "route",
+                        "rajar",
+                        "triton"
+                      ]
+                    },
+                    "reach_unit": {
+                      "title": "Reach Unit",
+                      "description": "Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison.",
+                      "type": "string",
+                      "enum": [
+                        "individuals",
+                        "households",
+                        "devices",
+                        "accounts",
+                        "cookies",
+                        "custom"
+                      ],
+                      "enumDescriptions": {
+                        "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                        "households": "Unique households or TV homes.",
+                        "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                        "accounts": "Unique logged-in accounts (platform-specific identity).",
+                        "cookies": "Unique browser cookies.",
+                        "custom": "Publisher-defined reach unit. Describe in ext."
+                      }
+                    },
+                    "generated_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this forecast was computed"
+                    },
+                    "valid_until": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability."
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "required": [
+                    "points",
+                    "method",
+                    "currency"
+                  ],
+                  "additionalProperties": true
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "product_id",
+                "allocation_percentage"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "proposal_status": {
+            "title": "Proposal Status",
+            "description": "Lifecycle status of this proposal. When absent, the proposal is ready to buy (backward compatible). 'draft' means indicative pricing \u2014 finalize via refine before purchasing. 'committed' means firm pricing with inventory reserved until expires_at.",
+            "type": "string",
+            "enum": [
+              "draft",
+              "committed"
+            ],
+            "enumDescriptions": {
+              "draft": "Indicative pricing and availability. The buyer can compare and plan but must finalize before purchasing. Use the 'finalize' refine action to request firm pricing.",
+              "committed": "Firm pricing with inventory reserved. The buyer can execute this proposal via create_media_buy before expires_at. After expires_at, the hold lapses and the buyer must re-finalize or re-discover."
+            }
+          },
+          "expires_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When this proposal expires and can no longer be executed. For draft proposals, indicates when indicative pricing becomes stale. For committed proposals, indicates when the inventory hold lapses \u2014 the buyer must call create_media_buy before this time."
+          },
+          "insertion_order": {
+            "title": "Insertion Order",
+            "description": "Formal insertion order attached to a committed proposal. Present when the seller requires a signed agreement before the media buy can proceed. The buyer references the io_id in io_acceptance on create_media_buy.",
+            "type": "object",
+            "properties": {
+              "io_id": {
+                "type": "string",
+                "description": "Unique identifier for this insertion order. Referenced by io_acceptance on create_media_buy.",
+                "maxLength": 255
+              },
+              "terms": {
+                "type": "object",
+                "description": "Summary fields echoed from the committed proposal for agent verification. Buyer agents use these to confirm the IO matches what was negotiated before a human signs. These are read-only summaries, not negotiation surfaces \u2014 deal terms live on products and packages.",
+                "properties": {
+                  "advertiser": {
+                    "type": "string",
+                    "description": "Advertiser name or identifier",
+                    "maxLength": 500
+                  },
+                  "publisher": {
+                    "type": "string",
+                    "description": "Publisher name or identifier",
+                    "maxLength": 500
+                  },
+                  "total_budget": {
+                    "type": "object",
+                    "description": "Total committed budget",
+                    "properties": {
+                      "amount": {
+                        "type": "number",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "minLength": 3,
+                        "maxLength": 3
+                      }
+                    },
+                    "required": [
+                      "amount",
+                      "currency"
+                    ]
+                  },
+                  "flight_start": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Campaign start date"
+                  },
+                  "flight_end": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Campaign end date"
+                  },
+                  "payment_terms": {
+                    "type": "string",
+                    "description": "Payment terms",
+                    "enum": [
+                      "net_30",
+                      "net_60",
+                      "net_90",
+                      "prepaid",
+                      "due_on_receipt"
+                    ]
+                  }
+                },
+                "additionalProperties": true
+              },
+              "terms_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to a human-readable document containing the full insertion order terms"
+              },
+              "signing_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to an electronic signing service (e.g., DocuSign) for human signature workflows. When present, a human must sign before the buyer agent can proceed with create_media_buy."
+              },
+              "requires_signature": {
+                "type": "boolean",
+                "description": "Whether the buyer must accept this IO before creating a media buy. When true, create_media_buy requires an io_acceptance referencing this io_id."
+              }
+            },
+            "required": [
+              "io_id",
+              "requires_signature"
+            ],
+            "additionalProperties": true
+          },
+          "total_budget_guidance": {
+            "type": "object",
+            "description": "Optional budget guidance for this proposal",
+            "properties": {
+              "min": {
+                "type": "number",
+                "description": "Minimum recommended budget",
+                "minimum": 0
+              },
+              "recommended": {
+                "type": "number",
+                "description": "Recommended budget for optimal performance",
+                "minimum": 0
+              },
+              "max": {
+                "type": "number",
+                "description": "Maximum budget before diminishing returns",
+                "minimum": 0
+              },
+              "currency": {
+                "type": "string",
+                "description": "ISO 4217 currency code"
+              }
+            },
+            "additionalProperties": true
+          },
+          "brief_alignment": {
+            "type": "string",
+            "description": "Explanation of how this proposal aligns with the campaign brief",
+            "maxLength": 2000
+          },
+          "forecast": {
+            "title": "Delivery Forecast",
+            "description": "Aggregate forecasted delivery metrics for the entire proposal. When both proposal-level and allocation-level forecasts are present, the proposal-level forecast is authoritative for total delivery estimation.",
+            "type": "object",
+            "properties": {
+              "points": {
+                "type": "array",
+                "description": "Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.",
+                "items": {
+                  "title": "Forecast Point",
+                  "description": "A forecast data point. When budget is present, the point pairs a spend level with expected delivery \u2014 multiple points at ascending budgets form a curve. When budget is omitted, the point represents total available inventory for the requested targeting and dates, independent of spend.",
+                  "type": "object",
+                  "properties": {
+                    "label": {
+                      "type": "string",
+                      "maxLength": 128,
+                      "description": "Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+                      "examples": [
+                        "Primetime",
+                        "Morning Drive",
+                        "Large Format Transit"
+                      ]
+                    },
+                    "budget": {
+                      "type": "number",
+                      "description": "Budget amount for this forecast point. Required for spend curves; omit for availability forecasts where the metrics represent total available inventory. For allocation-level forecasts, this is the absolute budget for that allocation (not the percentage). For proposal-level forecasts, this is the total proposal budget. When omitted, use metrics.spend to express the estimated cost of the available inventory.",
+                      "minimum": 0
+                    },
+                    "metrics": {
+                      "type": "object",
+                      "description": "Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { \"mid\": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory \u2014 use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).",
+                      "properties": {
+                        "audience_size": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "reach": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "frequency": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "impressions": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "clicks": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "spend": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "views": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "completed_views": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "grps": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "engagements": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "follows": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "saves": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "profile_visits": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "measured_impressions": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "downloads": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "plays": {
+                          "title": "Forecast Range",
+                          "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                          "type": "object",
+                          "properties": {
+                            "low": {
+                              "type": "number",
+                              "description": "Conservative (low-end) forecast value",
+                              "minimum": 0
+                            },
+                            "mid": {
+                              "type": "number",
+                              "description": "Expected (most likely) forecast value",
+                              "minimum": 0
+                            },
+                            "high": {
+                              "type": "number",
+                              "description": "Optimistic (high-end) forecast value",
+                              "minimum": 0
+                            }
+                          },
+                          "anyOf": [
+                            {
+                              "required": [
+                                "mid"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "low",
+                                "high"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        }
+                      },
+                      "additionalProperties": {
+                        "title": "Forecast Range",
+                        "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+                        "type": "object",
+                        "properties": {
+                          "low": {
+                            "type": "number",
+                            "description": "Conservative (low-end) forecast value",
+                            "minimum": 0
+                          },
+                          "mid": {
+                            "type": "number",
+                            "description": "Expected (most likely) forecast value",
+                            "minimum": 0
+                          },
+                          "high": {
+                            "type": "number",
+                            "description": "Optimistic (high-end) forecast value",
+                            "minimum": 0
+                          }
+                        },
+                        "anyOf": [
+                          {
+                            "required": [
+                              "mid"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "low",
+                              "high"
+                            ]
+                          }
+                        ],
+                        "additionalProperties": true
+                      }
+                    }
+                  },
+                  "required": [
+                    "metrics"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "forecast_range_unit": {
+                "title": "Forecast Range Unit",
+                "description": "How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package.",
+                "type": "string",
+                "enum": [
+                  "spend",
+                  "availability",
+                  "reach_freq",
+                  "weekly",
+                  "daily",
+                  "clicks",
+                  "conversions",
+                  "package"
+                ],
+                "enumDescriptions": {
+                  "spend": "Points at ascending budget levels. Standard budget curve showing how delivery metrics scale with spend. Default when field is omitted.",
+                  "availability": "Each point represents total available inventory for the requested targeting and dates. Budget is omitted \u2014 metrics express what exists, not what a given spend level buys. Use metrics.spend to express the estimated cost. Typical for guaranteed and direct-sold inventory where the forecast is an availability check.",
+                  "reach_freq": "Points at ascending reach/frequency targets. Used in broadcast planning where the publisher shows how cost scales with frequency goals.",
+                  "weekly": "Metrics are per-week values. Budget refers to total campaign spend. Frequency of 3.2 means 3.2 exposures per week.",
+                  "daily": "Metrics are per-day values. Budget refers to total campaign spend.",
+                  "clicks": "Points at ascending click targets. Used in performance campaigns where the buyer specifies click goals.",
+                  "conversions": "Points at ascending conversion targets. Used in goal-based planning (e.g., Meta-style 'tell me your goal, I'll tell you the budget').",
+                  "package": "Each point represents a distinct inventory package (e.g., Good/Better/Best tiers, daypart packages, sponsorships). Points are not levels on a spend curve \u2014 they are separate products with different inventory compositions. Used by broadcast TV, audio, and DOOH sellers who sell packages rather than impressions at variable spend levels."
+                }
+              },
+              "method": {
+                "title": "Forecast Method",
+                "description": "Method used to produce this forecast",
+                "type": "string",
+                "enum": [
+                  "estimate",
+                  "modeled",
+                  "guaranteed"
+                ],
+                "enumDescriptions": {
+                  "estimate": "Rough approximation based on historical averages or heuristics. No delivery commitment.",
+                  "modeled": "Forecast derived from platform-specific predictive models or historical data. Publisher uses this to set expectations but does not guarantee delivery.",
+                  "guaranteed": "Contractually committed delivery levels backed by reserved inventory"
+                }
+              },
+              "currency": {
+                "type": "string",
+                "description": "ISO 4217 currency code for monetary values in this forecast (spend, budget)"
+              },
+              "demographic_system": {
+                "title": "Demographic System",
+                "description": "Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation.",
+                "type": "string",
+                "enum": [
+                  "nielsen",
+                  "barb",
+                  "agf",
+                  "oztam",
+                  "mediametrie",
+                  "custom"
+                ],
+                "enumDescriptions": {
+                  "nielsen": "Nielsen notation. Prefix: P(ersons), M(en), W(omen), A(dults), C(hildren), T(eens) + age range. Examples: P18-49, M25-54, W35+",
+                  "barb": "BARB (UK). NRS social grade + age bands. Examples: ABC1 Adults, 16-34, Adults",
+                  "agf": "AGF Videoforschung (Germany). Erwachsene notation + age bands. Examples: E 14-49, E 14+",
+                  "oztam": "OzTAM (Australia). Age/gender bands, 4+ measurement universe",
+                  "mediametrie": "Mediametrie (France). Named segments + age bands",
+                  "custom": "Publisher-defined demographic notation"
+                }
+              },
+              "demographic": {
+                "type": "string",
+                "description": "Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.",
+                "examples": [
+                  "P18-49",
+                  "A25-54",
+                  "W35+",
+                  "M18-34"
+                ]
+              },
+              "measurement_source": {
+                "type": "string",
+                "maxLength": 64,
+                "pattern": "^[a-z0-9_]+$",
+                "description": "Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation \u2014 measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.",
+                "examples": [
+                  "nielsen",
+                  "videoamp",
+                  "comscore",
+                  "geopath",
+                  "barb",
+                  "agf",
+                  "oztam",
+                  "kantar",
+                  "barc",
+                  "route",
+                  "rajar",
+                  "triton"
+                ]
+              },
+              "reach_unit": {
+                "title": "Reach Unit",
+                "description": "Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison.",
+                "type": "string",
+                "enum": [
+                  "individuals",
+                  "households",
+                  "devices",
+                  "accounts",
+                  "cookies",
+                  "custom"
+                ],
+                "enumDescriptions": {
+                  "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                  "households": "Unique households or TV homes.",
+                  "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                  "accounts": "Unique logged-in accounts (platform-specific identity).",
+                  "cookies": "Unique browser cookies.",
+                  "custom": "Publisher-defined reach unit. Describe in ext."
+                }
+              },
+              "generated_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this forecast was computed"
+              },
+              "valid_until": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability."
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "points",
+              "method",
+              "currency"
+            ],
+            "additionalProperties": true
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "proposal_id",
+          "name",
+          "allocations"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings (e.g., product filtering issues)",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "property_list_applied": {
+      "type": "boolean",
+      "description": "[AdCP 3.0] Indicates whether property_list filtering was applied. True if the agent filtered products based on the provided property_list. Absent or false if property_list was not provided or not supported by this agent."
+    },
+    "catalog_applied": {
+      "type": "boolean",
+      "description": "Whether the seller filtered results based on the provided catalog. True if the seller matched catalog items against its inventory. Absent or false if no catalog was provided or the seller does not support catalog matching."
+    },
+    "refinement_applied": {
+      "type": "array",
+      "description": "Seller's response to each change request in the refine array, matched by position. Each entry acknowledges whether the corresponding ask was applied, partially applied, or unable to be fulfilled. MUST contain the same number of entries in the same order as the request's refine array. Only present when the request used buying_mode: 'refine'.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "scope": {
+            "type": "string",
+            "enum": [
+              "request",
+              "product",
+              "proposal"
+            ],
+            "description": "Echoes the scope from the corresponding refine entry. Allows orchestrators to cross-validate alignment."
+          },
+          "id": {
+            "type": "string",
+            "description": "Echoes the id from the corresponding refine entry (for product and proposal scopes)."
+          },
+          "status": {
+            "type": "string",
+            "enum": [
+              "applied",
+              "partial",
+              "unable"
+            ],
+            "description": "'applied': the ask was fulfilled. 'partial': the ask was partially fulfilled \u2014 see notes for details. 'unable': the seller could not fulfill the ask \u2014 see notes for why."
+          },
+          "notes": {
+            "type": "string",
+            "description": "Seller explanation of what was done, what couldn't be done, or why. Recommended when status is 'partial' or 'unable'."
+          }
+        },
+        "required": [
+          "status"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "incomplete": {
+      "type": "array",
+      "description": "Declares what the seller could not finish within the buyer's time_budget or due to internal limits. Each entry identifies a scope that is missing or partial. Absent when the response is fully complete.",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "properties": {
+          "scope": {
+            "type": "string",
+            "enum": [
+              "products",
+              "pricing",
+              "forecast",
+              "proposals"
+            ],
+            "description": "'products': not all inventory sources were searched. 'pricing': products returned but pricing is absent or unconfirmed. 'forecast': products returned but forecast data is absent. 'proposals': proposals were not generated or are incomplete."
+          },
+          "description": {
+            "type": "string",
+            "description": "Human-readable explanation of what is missing and why."
+          },
+          "estimated_wait": {
+            "allOf": [
+              {
+                "title": "Duration",
+                "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                "type": "object",
+                "properties": {
+                  "interval": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                  },
+                  "unit": {
+                    "type": "string",
+                    "enum": [
+                      "seconds",
+                      "minutes",
+                      "hours",
+                      "days",
+                      "campaign"
+                    ],
+                    "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                  }
+                },
+                "required": [
+                  "interval",
+                  "unit"
+                ],
+                "additionalProperties": false
+              }
+            ],
+            "description": "How much additional time would resolve this scope. Allows the buyer to decide whether to retry with a larger time_budget."
+          }
+        },
+        "required": [
+          "scope",
+          "description"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "products"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.397Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/list-creative-formats-request.json b/schemas/cache/bundled/media-buy/list-creative-formats-request.json
new file mode 100644
index 000000000..98673d5a4
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/list-creative-formats-request.json
@@ -0,0 +1,307 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Creative Formats Request",
+  "description": "Request parameters for discovering supported creative formats",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "format_ids": {
+      "type": "array",
+      "description": "Return only these specific format IDs (e.g., from get_products response)",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1
+    },
+    "asset_types": {
+      "type": "array",
+      "description": "Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
+      "items": {
+        "title": "Asset Content Type",
+        "description": "Types of content that can be used as creative assets. Describes what KIND of content an asset contains (image, video, code, etc.), not where it displays.",
+        "type": "string",
+        "enum": [
+          "image",
+          "video",
+          "audio",
+          "text",
+          "markdown",
+          "html",
+          "css",
+          "javascript",
+          "vast",
+          "daast",
+          "url",
+          "webhook",
+          "brief",
+          "catalog"
+        ]
+      },
+      "minItems": 1
+    },
+    "max_width": {
+      "type": "integer",
+      "description": "Maximum width in pixels (inclusive). Returns formats where ANY render has width <= this value. For multi-render formats, matches if at least one render fits."
+    },
+    "max_height": {
+      "type": "integer",
+      "description": "Maximum height in pixels (inclusive). Returns formats where ANY render has height <= this value. For multi-render formats, matches if at least one render fits."
+    },
+    "min_width": {
+      "type": "integer",
+      "description": "Minimum width in pixels (inclusive). Returns formats where ANY render has width >= this value."
+    },
+    "min_height": {
+      "type": "integer",
+      "description": "Minimum height in pixels (inclusive). Returns formats where ANY render has height >= this value."
+    },
+    "is_responsive": {
+      "type": "boolean",
+      "description": "Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions."
+    },
+    "name_search": {
+      "type": "string",
+      "description": "Search for formats by name (case-insensitive partial match)"
+    },
+    "wcag_level": {
+      "title": "WCAG Level",
+      "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)",
+      "type": "string",
+      "enum": [
+        "A",
+        "AA",
+        "AAA"
+      ],
+      "enumDescriptions": {
+        "A": "Minimum level of conformance. Addresses the most basic accessibility barriers.",
+        "AA": "Addresses the most common barriers for disabled users. Required by most accessibility regulations.",
+        "AAA": "Highest level of conformance. Addresses the widest range of accessibility barriers."
+      }
+    },
+    "disclosure_positions": {
+      "type": "array",
+      "description": "Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
+      "items": {
+        "title": "Disclosure Position",
+        "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+        "type": "string",
+        "enum": [
+          "prominent",
+          "footer",
+          "audio",
+          "subtitle",
+          "overlay",
+          "end_card",
+          "pre_roll",
+          "companion"
+        ]
+      },
+      "minItems": 1,
+      "uniqueItems": true
+    },
+    "disclosure_persistence": {
+      "type": "array",
+      "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
+      "items": {
+        "title": "Disclosure Persistence",
+        "description": "How long a disclosure must persist during content playback or display. Different jurisdictions and regulations require different persistence behaviors for AI-generated content labels. When multiple sources specify persistence for the same jurisdiction (e.g., brief and provenance), the most restrictive mode applies: continuous > initial > flexible.",
+        "type": "string",
+        "enum": [
+          "continuous",
+          "initial",
+          "flexible"
+        ],
+        "enumDescriptions": {
+          "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+          "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+          "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+        }
+      },
+      "minItems": 1,
+      "uniqueItems": true
+    },
+    "output_format_ids": {
+      "type": "array",
+      "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1
+    },
+    "input_format_ids": {
+      "type": "array",
+      "description": "Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input \u2014 inspect each result's output_format_ids to see what they can produce.",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.402Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/list-creative-formats-response.json b/schemas/cache/bundled/media-buy/list-creative-formats-response.json
new file mode 100644
index 000000000..dbbb05e4a
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/list-creative-formats-response.json
@@ -0,0 +1,4051 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Creative Formats Response",
+  "description": "Response payload for list_creative_formats task",
+  "type": "object",
+  "properties": {
+    "formats": {
+      "type": "array",
+      "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
+      "items": {
+        "title": "Format",
+        "description": "Represents a creative format with its requirements",
+        "type": "object",
+        "$defs": {
+          "baseIndividualAsset": {
+            "type": "object",
+            "properties": {
+              "item_type": {
+                "type": "string",
+                "const": "individual",
+                "description": "Discriminator indicating this is an individual asset"
+              },
+              "asset_id": {
+                "type": "string",
+                "description": "Unique identifier for this asset. Creative manifests MUST use this exact value as the key in the assets object."
+              },
+              "asset_role": {
+                "type": "string",
+                "description": "Descriptive label for this asset's purpose (e.g., 'hero_image', 'logo', 'third_party_tracking'). For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role."
+              },
+              "required": {
+                "type": "boolean",
+                "description": "Whether this asset is required (true) or optional (false). Required assets must be provided for a valid creative. Optional assets enhance the creative but are not mandatory."
+              },
+              "overlays": {
+                "type": "array",
+                "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., video player controls, publisher logos). Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+                "items": {
+                  "title": "Overlay",
+                  "description": "A publisher-controlled element that renders on top of buyer creative content within the ad placement. Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+                  "type": "object",
+                  "properties": {
+                    "id": {
+                      "type": "string",
+                      "description": "Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')"
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Human-readable explanation of what this overlay is and how buyers should account for it"
+                    },
+                    "visual": {
+                      "type": "object",
+                      "description": "Optional visual reference for this overlay element. Useful for creative agents compositing previews and for buyers understanding what will appear over their content. Must include at least one of: url, light, or dark.",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor."
+                        },
+                        "light": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)"
+                        },
+                        "dark": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on dark backgrounds (SVG or PNG)"
+                        }
+                      },
+                      "minProperties": 1,
+                      "additionalProperties": false
+                    },
+                    "bounds": {
+                      "type": "object",
+                      "description": "Position and size of the overlay relative to the asset's own top-left corner. See 'unit' for coordinate interpretation.",
+                      "properties": {
+                        "x": {
+                          "type": "number",
+                          "description": "Horizontal offset from the asset's left edge"
+                        },
+                        "y": {
+                          "type": "number",
+                          "description": "Vertical offset from the asset's top edge"
+                        },
+                        "width": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Width of the overlay"
+                        },
+                        "height": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Height of the overlay"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "px",
+                            "fraction",
+                            "inches",
+                            "cm",
+                            "mm",
+                            "pt"
+                          ],
+                          "description": "'px' = absolute pixels from asset top-left. 'fraction' = proportional to asset dimensions (0.0 = edge, 1.0 = opposite edge). 'inches', 'cm', 'mm', 'pt' (1/72 inch) = physical units for print overlays, measured from asset top-left."
+                        }
+                      },
+                      "required": [
+                        "x",
+                        "y",
+                        "width",
+                        "height",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    }
+                  },
+                  "required": [
+                    "id",
+                    "bounds"
+                  ],
+                  "additionalProperties": false
+                }
+              }
+            },
+            "required": [
+              "item_type",
+              "asset_id",
+              "asset_type",
+              "required"
+            ]
+          },
+          "baseGroupAsset": {
+            "type": "object",
+            "properties": {
+              "asset_id": {
+                "type": "string",
+                "description": "Identifier for this asset within the group"
+              },
+              "asset_role": {
+                "type": "string",
+                "description": "Descriptive label for this asset's purpose. For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role."
+              },
+              "required": {
+                "type": "boolean",
+                "description": "Whether this asset is required within each repetition of the group",
+                "default": false
+              },
+              "overlays": {
+                "type": "array",
+                "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., carousel navigation arrows, slide indicators). Creative agents should avoid placing critical content within overlay bounds.",
+                "items": {
+                  "title": "Overlay",
+                  "description": "A publisher-controlled element that renders on top of buyer creative content within the ad placement. Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+                  "type": "object",
+                  "properties": {
+                    "id": {
+                      "type": "string",
+                      "description": "Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')"
+                    },
+                    "description": {
+                      "type": "string",
+                      "description": "Human-readable explanation of what this overlay is and how buyers should account for it"
+                    },
+                    "visual": {
+                      "type": "object",
+                      "description": "Optional visual reference for this overlay element. Useful for creative agents compositing previews and for buyers understanding what will appear over their content. Must include at least one of: url, light, or dark.",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor."
+                        },
+                        "light": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)"
+                        },
+                        "dark": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the overlay graphic for use on dark backgrounds (SVG or PNG)"
+                        }
+                      },
+                      "minProperties": 1,
+                      "additionalProperties": false
+                    },
+                    "bounds": {
+                      "type": "object",
+                      "description": "Position and size of the overlay relative to the asset's own top-left corner. See 'unit' for coordinate interpretation.",
+                      "properties": {
+                        "x": {
+                          "type": "number",
+                          "description": "Horizontal offset from the asset's left edge"
+                        },
+                        "y": {
+                          "type": "number",
+                          "description": "Vertical offset from the asset's top edge"
+                        },
+                        "width": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Width of the overlay"
+                        },
+                        "height": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Height of the overlay"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "px",
+                            "fraction",
+                            "inches",
+                            "cm",
+                            "mm",
+                            "pt"
+                          ],
+                          "description": "'px' = absolute pixels from asset top-left. 'fraction' = proportional to asset dimensions (0.0 = edge, 1.0 = opposite edge). 'inches', 'cm', 'mm', 'pt' (1/72 inch) = physical units for print overlays, measured from asset top-left."
+                        }
+                      },
+                      "required": [
+                        "x",
+                        "y",
+                        "width",
+                        "height",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    }
+                  },
+                  "required": [
+                    "id",
+                    "bounds"
+                  ],
+                  "additionalProperties": false
+                }
+              }
+            },
+            "required": [
+              "asset_id",
+              "asset_type",
+              "required"
+            ]
+          }
+        },
+        "properties": {
+          "format_id": {
+            "title": "Format ID",
+            "description": "Structured format identifier with agent URL and format name",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable format name"
+          },
+          "description": {
+            "type": "string",
+            "description": "Plain text explanation of what this format does and what assets it requires"
+          },
+          "example_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Optional URL to showcase page with examples and interactive demos of this format"
+          },
+          "accepts_parameters": {
+            "type": "array",
+            "description": "List of parameters this format accepts in format_id. Template formats define which parameters (dimensions, duration, etc.) can be specified when instantiating the format. Empty or omitted means this is a concrete format with fixed parameters.",
+            "items": {
+              "title": "Format ID Parameter",
+              "description": "Types of parameters that template formats accept in format_id objects to create parameterized format identifiers",
+              "type": "string",
+              "enum": [
+                "dimensions",
+                "duration"
+              ]
+            },
+            "uniqueItems": true
+          },
+          "renders": {
+            "type": "array",
+            "description": "Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "role": {
+                  "type": "string",
+                  "description": "Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+                },
+                "parameters_from_format_id": {
+                  "type": "boolean",
+                  "description": "When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly."
+                },
+                "dimensions": {
+                  "type": "object",
+                  "description": "Dimensions for this rendered piece. Defaults to pixels when unit is absent.",
+                  "properties": {
+                    "width": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Fixed width. Interpretation depends on unit (default: pixels)."
+                    },
+                    "height": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Fixed height. Interpretation depends on unit (default: pixels)."
+                    },
+                    "min_width": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Minimum width for responsive renders"
+                    },
+                    "min_height": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Minimum height for responsive renders"
+                    },
+                    "max_width": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Maximum width for responsive renders"
+                    },
+                    "max_height": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Maximum height for responsive renders"
+                    },
+                    "unit": {
+                      "title": "Dimension Unit",
+                      "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                      "type": "string",
+                      "enum": [
+                        "px",
+                        "dp",
+                        "inches",
+                        "cm",
+                        "mm",
+                        "pt"
+                      ]
+                    },
+                    "responsive": {
+                      "type": "object",
+                      "description": "Indicates which dimensions are responsive/fluid",
+                      "properties": {
+                        "width": {
+                          "type": "boolean"
+                        },
+                        "height": {
+                          "type": "boolean"
+                        }
+                      },
+                      "required": [
+                        "width",
+                        "height"
+                      ]
+                    },
+                    "aspect_ratio": {
+                      "type": "string",
+                      "description": "Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
+                      "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$"
+                    }
+                  }
+                }
+              },
+              "required": [
+                "role"
+              ],
+              "oneOf": [
+                {
+                  "required": [
+                    "dimensions"
+                  ],
+                  "not": {
+                    "required": [
+                      "parameters_from_format_id"
+                    ]
+                  }
+                },
+                {
+                  "required": [
+                    "parameters_from_format_id"
+                  ],
+                  "properties": {
+                    "parameters_from_format_id": {
+                      "const": true
+                    }
+                  },
+                  "not": {
+                    "required": [
+                      "dimensions"
+                    ]
+                  }
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "assets": {
+            "type": "array",
+            "description": "Array of all assets supported for this format. Each asset is identified by its asset_id, which must be used as the key in creative manifests. Use the 'required' boolean on each asset to indicate whether it's mandatory.",
+            "items": {
+              "oneOf": [
+                {
+                  "description": "Image asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "image"
+                    },
+                    "requirements": {
+                      "title": "Image Asset Requirements",
+                      "description": "Requirements for image creative assets. These define the technical constraints for image files.",
+                      "type": "object",
+                      "properties": {
+                        "min_width": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                        },
+                        "max_width": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                        },
+                        "min_height": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                        },
+                        "max_height": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                        },
+                        "unit": {
+                          "title": "Dimension Unit",
+                          "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                          "type": "string",
+                          "enum": [
+                            "px",
+                            "dp",
+                            "inches",
+                            "cm",
+                            "mm",
+                            "pt"
+                          ]
+                        },
+                        "aspect_ratio": {
+                          "type": "string",
+                          "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
+                          "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')"
+                        },
+                        "formats": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "jpg",
+                              "jpeg",
+                              "png",
+                              "gif",
+                              "webp",
+                              "svg",
+                              "avif",
+                              "tiff",
+                              "pdf",
+                              "eps"
+                            ]
+                          },
+                          "description": "Accepted image file formats"
+                        },
+                        "min_dpi": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI."
+                        },
+                        "bleed": {
+                          "type": "object",
+                          "description": "Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.",
+                          "oneOf": [
+                            {
+                              "properties": {
+                                "uniform": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "description": "Same bleed on all four sides"
+                                }
+                              },
+                              "required": [
+                                "uniform"
+                              ],
+                              "additionalProperties": false
+                            },
+                            {
+                              "properties": {
+                                "top": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "right": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "bottom": {
+                                  "type": "number",
+                                  "minimum": 0
+                                },
+                                "left": {
+                                  "type": "number",
+                                  "minimum": 0
+                                }
+                              },
+                              "required": [
+                                "top",
+                                "right",
+                                "bottom",
+                                "left"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ]
+                        },
+                        "color_space": {
+                          "type": "string",
+                          "enum": [
+                            "rgb",
+                            "cmyk",
+                            "grayscale"
+                          ],
+                          "description": "Required color space. Print typically requires CMYK."
+                        },
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        },
+                        "transparency_required": {
+                          "type": "boolean",
+                          "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)"
+                        },
+                        "animation_allowed": {
+                          "type": "boolean",
+                          "description": "Whether animated images (GIF, animated WebP) are accepted"
+                        },
+                        "max_animation_duration_ms": {
+                          "type": "integer",
+                          "minimum": 0,
+                          "description": "Maximum animation duration in milliseconds (if animation_allowed is true)"
+                        },
+                        "max_weight_grams": {
+                          "type": "integer",
+                          "exclusiveMinimum": 0,
+                          "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels."
+                        }
+                      },
+                      "if": {
+                        "required": [
+                          "min_dpi"
+                        ]
+                      },
+                      "then": {
+                        "required": [
+                          "unit"
+                        ]
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Video asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "video"
+                    },
+                    "requirements": {
+                      "title": "Video Asset Requirements",
+                      "description": "Requirements for video creative assets. These define the technical constraints for video files.",
+                      "type": "object",
+                      "properties": {
+                        "min_width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum width in pixels"
+                        },
+                        "max_width": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum width in pixels"
+                        },
+                        "min_height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum height in pixels"
+                        },
+                        "max_height": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum height in pixels"
+                        },
+                        "aspect_ratio": {
+                          "type": "string",
+                          "pattern": "^\\d+:\\d+$",
+                          "description": "Required aspect ratio (e.g., '16:9', '9:16')"
+                        },
+                        "min_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum duration in milliseconds"
+                        },
+                        "max_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum duration in milliseconds"
+                        },
+                        "containers": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mp4",
+                              "webm",
+                              "mov",
+                              "avi",
+                              "mkv"
+                            ]
+                          },
+                          "description": "Accepted video container formats"
+                        },
+                        "codecs": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "h264",
+                              "h265",
+                              "vp8",
+                              "vp9",
+                              "av1",
+                              "prores"
+                            ]
+                          },
+                          "description": "Accepted video codecs"
+                        },
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        },
+                        "min_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum video bitrate in kilobits per second"
+                        },
+                        "max_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum video bitrate in kilobits per second"
+                        },
+                        "frame_rates": {
+                          "type": "array",
+                          "items": {
+                            "type": "number",
+                            "minimum": 1
+                          },
+                          "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])"
+                        },
+                        "audio_required": {
+                          "type": "boolean",
+                          "description": "Whether the video must include an audio track"
+                        },
+                        "frame_rate_type": {
+                          "type": "string",
+                          "enum": [
+                            "constant",
+                            "variable"
+                          ],
+                          "description": "Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing."
+                        },
+                        "scan_type": {
+                          "type": "string",
+                          "enum": [
+                            "progressive",
+                            "interlaced"
+                          ],
+                          "description": "Required scan type. Modern delivery requires progressive scan."
+                        },
+                        "gop_type": {
+                          "type": "string",
+                          "enum": [
+                            "closed",
+                            "open"
+                          ],
+                          "description": "Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points."
+                        },
+                        "min_gop_interval_seconds": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Minimum keyframe interval in seconds"
+                        },
+                        "max_gop_interval_seconds": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals."
+                        },
+                        "moov_atom_position": {
+                          "type": "string",
+                          "enum": [
+                            "start",
+                            "end"
+                          ],
+                          "description": "Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+                        },
+                        "audio_codecs": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "aac",
+                              "pcm",
+                              "ac3",
+                              "eac3",
+                              "mp3",
+                              "opus",
+                              "vorbis",
+                              "flac"
+                            ]
+                          },
+                          "description": "Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"
+                        },
+                        "audio_sample_rates": {
+                          "type": "array",
+                          "items": {
+                            "type": "integer",
+                            "minimum": 1
+                          },
+                          "description": "Accepted audio sample rates in Hz (e.g., [44100, 48000])"
+                        },
+                        "audio_channels": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo",
+                              "5.1",
+                              "7.1"
+                            ]
+                          },
+                          "description": "Accepted audio channel configurations"
+                        },
+                        "loudness_lufs": {
+                          "type": "number",
+                          "description": "Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)"
+                        },
+                        "loudness_tolerance_db": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)"
+                        },
+                        "true_peak_dbfs": {
+                          "type": "number",
+                          "description": "Maximum true peak level in dBFS (e.g., -2 for broadcast)"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Audio asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "audio"
+                    },
+                    "requirements": {
+                      "title": "Audio Asset Requirements",
+                      "description": "Requirements for audio creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "min_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum duration in milliseconds"
+                        },
+                        "max_duration_ms": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum duration in milliseconds"
+                        },
+                        "formats": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mp3",
+                              "aac",
+                              "wav",
+                              "ogg",
+                              "flac"
+                            ]
+                          },
+                          "description": "Accepted audio file formats"
+                        },
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        },
+                        "sample_rates": {
+                          "type": "array",
+                          "items": {
+                            "type": "integer",
+                            "minimum": 1
+                          },
+                          "description": "Accepted sample rates in Hz (e.g., [44100, 48000])"
+                        },
+                        "channels": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "mono",
+                              "stereo"
+                            ]
+                          },
+                          "description": "Accepted audio channel configurations"
+                        },
+                        "min_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum audio bitrate in kilobits per second"
+                        },
+                        "max_bitrate_kbps": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum audio bitrate in kilobits per second"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Text asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "text"
+                    },
+                    "requirements": {
+                      "title": "Text Asset Requirements",
+                      "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
+                      "type": "object",
+                      "properties": {
+                        "min_length": {
+                          "type": "integer",
+                          "minimum": 0,
+                          "description": "Minimum character length"
+                        },
+                        "max_length": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum character length"
+                        },
+                        "min_lines": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum number of lines"
+                        },
+                        "max_lines": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum number of lines"
+                        },
+                        "character_pattern": {
+                          "type": "string",
+                          "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+                        },
+                        "prohibited_terms": {
+                          "type": "array",
+                          "items": {
+                            "type": "string"
+                          },
+                          "description": "List of prohibited words or phrases"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Markdown asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "markdown"
+                    },
+                    "requirements": {
+                      "title": "Markdown Asset Requirements",
+                      "description": "Requirements for markdown creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "max_length": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum character length"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "HTML asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "html"
+                    },
+                    "requirements": {
+                      "title": "HTML Asset Requirements",
+                      "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
+                      "type": "object",
+                      "properties": {
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes for the HTML asset"
+                        },
+                        "sandbox": {
+                          "type": "string",
+                          "enum": [
+                            "none",
+                            "iframe",
+                            "safeframe",
+                            "fencedframe"
+                          ],
+                          "default": "none",
+                          "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+                        },
+                        "external_resources_allowed": {
+                          "type": "boolean",
+                          "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled."
+                        },
+                        "allowed_external_domains": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "format": "hostname"
+                          },
+                          "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true."
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "CSS asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "css"
+                    },
+                    "requirements": {
+                      "title": "CSS Asset Requirements",
+                      "description": "Requirements for CSS creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "JavaScript asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "javascript"
+                    },
+                    "requirements": {
+                      "title": "JavaScript Asset Requirements",
+                      "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
+                      "type": "object",
+                      "properties": {
+                        "max_file_size_kb": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum file size in kilobytes for the JavaScript asset"
+                        },
+                        "module_type": {
+                          "type": "string",
+                          "enum": [
+                            "script",
+                            "module",
+                            "iife"
+                          ],
+                          "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+                        },
+                        "strict_mode_required": {
+                          "type": "boolean",
+                          "description": "Whether the JavaScript must use strict mode"
+                        },
+                        "external_resources_allowed": {
+                          "type": "boolean",
+                          "description": "Whether the JavaScript can load external resources dynamically"
+                        },
+                        "allowed_external_domains": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "format": "hostname"
+                          },
+                          "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true."
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "VAST asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "vast"
+                    },
+                    "requirements": {
+                      "title": "VAST Asset Requirements",
+                      "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "vast_version": {
+                          "type": "string",
+                          "enum": [
+                            "2.0",
+                            "3.0",
+                            "4.0",
+                            "4.1",
+                            "4.2"
+                          ],
+                          "description": "Required VAST version"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "DAAST asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "daast"
+                    },
+                    "requirements": {
+                      "title": "DAAST Asset Requirements",
+                      "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "daast_version": {
+                          "type": "string",
+                          "enum": [
+                            "1.0"
+                          ],
+                          "description": "Required DAAST version. DAAST 1.0 is the current IAB standard."
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "URL asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "url"
+                    },
+                    "requirements": {
+                      "title": "URL Asset Requirements",
+                      "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
+                      "type": "object",
+                      "properties": {
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "clickthrough",
+                            "landing_page",
+                            "impression_tracker",
+                            "click_tracker",
+                            "viewability_tracker",
+                            "third_party_tracker"
+                          ],
+                          "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum."
+                        },
+                        "protocols": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "https",
+                              "http"
+                            ]
+                          },
+                          "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs."
+                        },
+                        "allowed_domains": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "format": "hostname"
+                          },
+                          "description": "List of allowed domains for the URL"
+                        },
+                        "max_length": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum URL length in characters"
+                        },
+                        "macro_support": {
+                          "type": "boolean",
+                          "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Webhook asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "webhook"
+                    },
+                    "requirements": {
+                      "title": "Webhook Asset Requirements",
+                      "description": "Requirements for webhook creative assets.",
+                      "type": "object",
+                      "properties": {
+                        "methods": {
+                          "type": "array",
+                          "items": {
+                            "type": "string",
+                            "enum": [
+                              "GET",
+                              "POST"
+                            ]
+                          },
+                          "description": "Allowed HTTP methods"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Brief asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "brief"
+                    }
+                  }
+                },
+                {
+                  "description": "Catalog asset",
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/baseIndividualAsset"
+                    }
+                  ],
+                  "properties": {
+                    "item_type": {
+                      "const": "individual"
+                    },
+                    "asset_type": {
+                      "const": "catalog"
+                    },
+                    "requirements": {
+                      "title": "Catalog Requirements",
+                      "description": "Format-level declaration of what catalog feeds a creative needs. Formats that render product listings, store locators, or promotional content declare which catalog types must be synced and what fields each catalog must provide. Buyers use this to ensure the right catalogs are synced before submitting creatives.",
+                      "type": "object",
+                      "properties": {
+                        "catalog_type": {
+                          "title": "Catalog Type",
+                          "description": "The catalog type this requirement applies to",
+                          "type": "string",
+                          "enum": [
+                            "offering",
+                            "product",
+                            "inventory",
+                            "store",
+                            "promotion",
+                            "hotel",
+                            "flight",
+                            "job",
+                            "vehicle",
+                            "real_estate",
+                            "education",
+                            "destination",
+                            "app"
+                          ]
+                        },
+                        "required": {
+                          "type": "boolean",
+                          "description": "Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.",
+                          "default": true
+                        },
+                        "min_items": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)"
+                        },
+                        "max_items": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Maximum number of items the format can render. Items beyond this limit are ignored. Useful for fixed-slot layouts (e.g., a 3-product card) or feed-size constraints."
+                        },
+                        "required_fields": {
+                          "type": "array",
+                          "description": "Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "feed_formats": {
+                          "type": "array",
+                          "description": "Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.",
+                          "items": {
+                            "title": "Feed Format",
+                            "description": "Catalog feed formats. Determines how the platform parses items from an external feed URL.",
+                            "type": "string",
+                            "enum": [
+                              "google_merchant_center",
+                              "facebook_catalog",
+                              "shopify",
+                              "linkedin_jobs",
+                              "custom"
+                            ]
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "offering_asset_constraints": {
+                          "type": "array",
+                          "description": "Per-item creative asset requirements. Declares what asset groups (headlines, images, videos) each catalog item must provide in its assets array, along with count bounds and per-asset technical constraints. Applicable to 'offering' and all vertical catalog types (hotel, flight, job, etc.) whose items carry typed assets.",
+                          "items": {
+                            "title": "Offering Asset Constraint",
+                            "description": "Declares per-group creative requirements that each offering must satisfy. Allows formats to specify what asset groups (headlines, images, videos) offerings must provide, along with count and per-asset technical constraints.",
+                            "type": "object",
+                            "properties": {
+                              "asset_group_id": {
+                                "type": "string",
+                                "description": "The asset group this constraint applies to. Values are format-defined vocabulary \u2014 each format chooses its own group IDs (e.g., 'headlines', 'images', 'videos'). Buyers discover them via list_creative_formats."
+                              },
+                              "asset_type": {
+                                "title": "Asset Content Type",
+                                "description": "The expected content type for this group.",
+                                "type": "string",
+                                "enum": [
+                                  "image",
+                                  "video",
+                                  "audio",
+                                  "text",
+                                  "markdown",
+                                  "html",
+                                  "css",
+                                  "javascript",
+                                  "vast",
+                                  "daast",
+                                  "url",
+                                  "webhook",
+                                  "brief",
+                                  "catalog"
+                                ]
+                              },
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether this asset group must be present in each offering. Defaults to true.",
+                                "default": true
+                              },
+                              "min_count": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Minimum number of items required in this group."
+                              },
+                              "max_count": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Maximum number of items allowed in this group."
+                              },
+                              "asset_requirements": {
+                                "title": "Asset Requirements",
+                                "description": "Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group.",
+                                "anyOf": [
+                                  {
+                                    "title": "Image Asset Requirements",
+                                    "description": "Requirements for image creative assets. These define the technical constraints for image files.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_width": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                      },
+                                      "max_width": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                      },
+                                      "min_height": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                      },
+                                      "max_height": {
+                                        "type": "number",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                      },
+                                      "unit": {
+                                        "title": "Dimension Unit",
+                                        "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                                        "type": "string",
+                                        "enum": [
+                                          "px",
+                                          "dp",
+                                          "inches",
+                                          "cm",
+                                          "mm",
+                                          "pt"
+                                        ]
+                                      },
+                                      "aspect_ratio": {
+                                        "type": "string",
+                                        "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
+                                        "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')"
+                                      },
+                                      "formats": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "jpg",
+                                            "jpeg",
+                                            "png",
+                                            "gif",
+                                            "webp",
+                                            "svg",
+                                            "avif",
+                                            "tiff",
+                                            "pdf",
+                                            "eps"
+                                          ]
+                                        },
+                                        "description": "Accepted image file formats"
+                                      },
+                                      "min_dpi": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI."
+                                      },
+                                      "bleed": {
+                                        "type": "object",
+                                        "description": "Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.",
+                                        "oneOf": [
+                                          {
+                                            "properties": {
+                                              "uniform": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "description": "Same bleed on all four sides"
+                                              }
+                                            },
+                                            "required": [
+                                              "uniform"
+                                            ],
+                                            "additionalProperties": false
+                                          },
+                                          {
+                                            "properties": {
+                                              "top": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              },
+                                              "right": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              },
+                                              "bottom": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              },
+                                              "left": {
+                                                "type": "number",
+                                                "minimum": 0
+                                              }
+                                            },
+                                            "required": [
+                                              "top",
+                                              "right",
+                                              "bottom",
+                                              "left"
+                                            ],
+                                            "additionalProperties": false
+                                          }
+                                        ]
+                                      },
+                                      "color_space": {
+                                        "type": "string",
+                                        "enum": [
+                                          "rgb",
+                                          "cmyk",
+                                          "grayscale"
+                                        ],
+                                        "description": "Required color space. Print typically requires CMYK."
+                                      },
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      },
+                                      "transparency_required": {
+                                        "type": "boolean",
+                                        "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)"
+                                      },
+                                      "animation_allowed": {
+                                        "type": "boolean",
+                                        "description": "Whether animated images (GIF, animated WebP) are accepted"
+                                      },
+                                      "max_animation_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 0,
+                                        "description": "Maximum animation duration in milliseconds (if animation_allowed is true)"
+                                      },
+                                      "max_weight_grams": {
+                                        "type": "integer",
+                                        "exclusiveMinimum": 0,
+                                        "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels."
+                                      }
+                                    },
+                                    "if": {
+                                      "required": [
+                                        "min_dpi"
+                                      ]
+                                    },
+                                    "then": {
+                                      "required": [
+                                        "unit"
+                                      ]
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Video Asset Requirements",
+                                    "description": "Requirements for video creative assets. These define the technical constraints for video files.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_width": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum width in pixels"
+                                      },
+                                      "max_width": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum width in pixels"
+                                      },
+                                      "min_height": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum height in pixels"
+                                      },
+                                      "max_height": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum height in pixels"
+                                      },
+                                      "aspect_ratio": {
+                                        "type": "string",
+                                        "pattern": "^\\d+:\\d+$",
+                                        "description": "Required aspect ratio (e.g., '16:9', '9:16')"
+                                      },
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum duration in milliseconds"
+                                      },
+                                      "max_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum duration in milliseconds"
+                                      },
+                                      "containers": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mp4",
+                                            "webm",
+                                            "mov",
+                                            "avi",
+                                            "mkv"
+                                          ]
+                                        },
+                                        "description": "Accepted video container formats"
+                                      },
+                                      "codecs": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "h264",
+                                            "h265",
+                                            "vp8",
+                                            "vp9",
+                                            "av1",
+                                            "prores"
+                                          ]
+                                        },
+                                        "description": "Accepted video codecs"
+                                      },
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      },
+                                      "min_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum video bitrate in kilobits per second"
+                                      },
+                                      "max_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum video bitrate in kilobits per second"
+                                      },
+                                      "frame_rates": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "number",
+                                          "minimum": 1
+                                        },
+                                        "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])"
+                                      },
+                                      "audio_required": {
+                                        "type": "boolean",
+                                        "description": "Whether the video must include an audio track"
+                                      },
+                                      "frame_rate_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "constant",
+                                          "variable"
+                                        ],
+                                        "description": "Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing."
+                                      },
+                                      "scan_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "progressive",
+                                          "interlaced"
+                                        ],
+                                        "description": "Required scan type. Modern delivery requires progressive scan."
+                                      },
+                                      "gop_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "closed",
+                                          "open"
+                                        ],
+                                        "description": "Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points."
+                                      },
+                                      "min_gop_interval_seconds": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "description": "Minimum keyframe interval in seconds"
+                                      },
+                                      "max_gop_interval_seconds": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "description": "Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals."
+                                      },
+                                      "moov_atom_position": {
+                                        "type": "string",
+                                        "enum": [
+                                          "start",
+                                          "end"
+                                        ],
+                                        "description": "Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+                                      },
+                                      "audio_codecs": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "aac",
+                                            "pcm",
+                                            "ac3",
+                                            "eac3",
+                                            "mp3",
+                                            "opus",
+                                            "vorbis",
+                                            "flac"
+                                          ]
+                                        },
+                                        "description": "Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"
+                                      },
+                                      "audio_sample_rates": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "integer",
+                                          "minimum": 1
+                                        },
+                                        "description": "Accepted audio sample rates in Hz (e.g., [44100, 48000])"
+                                      },
+                                      "audio_channels": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mono",
+                                            "stereo",
+                                            "5.1",
+                                            "7.1"
+                                          ]
+                                        },
+                                        "description": "Accepted audio channel configurations"
+                                      },
+                                      "loudness_lufs": {
+                                        "type": "number",
+                                        "description": "Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)"
+                                      },
+                                      "loudness_tolerance_db": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "description": "Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)"
+                                      },
+                                      "true_peak_dbfs": {
+                                        "type": "number",
+                                        "description": "Maximum true peak level in dBFS (e.g., -2 for broadcast)"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Audio Asset Requirements",
+                                    "description": "Requirements for audio creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum duration in milliseconds"
+                                      },
+                                      "max_duration_ms": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum duration in milliseconds"
+                                      },
+                                      "formats": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mp3",
+                                            "aac",
+                                            "wav",
+                                            "ogg",
+                                            "flac"
+                                          ]
+                                        },
+                                        "description": "Accepted audio file formats"
+                                      },
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      },
+                                      "sample_rates": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "integer",
+                                          "minimum": 1
+                                        },
+                                        "description": "Accepted sample rates in Hz (e.g., [44100, 48000])"
+                                      },
+                                      "channels": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "mono",
+                                            "stereo"
+                                          ]
+                                        },
+                                        "description": "Accepted audio channel configurations"
+                                      },
+                                      "min_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum audio bitrate in kilobits per second"
+                                      },
+                                      "max_bitrate_kbps": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum audio bitrate in kilobits per second"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Text Asset Requirements",
+                                    "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
+                                    "type": "object",
+                                    "properties": {
+                                      "min_length": {
+                                        "type": "integer",
+                                        "minimum": 0,
+                                        "description": "Minimum character length"
+                                      },
+                                      "max_length": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum character length"
+                                      },
+                                      "min_lines": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Minimum number of lines"
+                                      },
+                                      "max_lines": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum number of lines"
+                                      },
+                                      "character_pattern": {
+                                        "type": "string",
+                                        "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+                                      },
+                                      "prohibited_terms": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string"
+                                        },
+                                        "description": "List of prohibited words or phrases"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Markdown Asset Requirements",
+                                    "description": "Requirements for markdown creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_length": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum character length"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "HTML Asset Requirements",
+                                    "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes for the HTML asset"
+                                      },
+                                      "sandbox": {
+                                        "type": "string",
+                                        "enum": [
+                                          "none",
+                                          "iframe",
+                                          "safeframe",
+                                          "fencedframe"
+                                        ],
+                                        "default": "none",
+                                        "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+                                      },
+                                      "external_resources_allowed": {
+                                        "type": "boolean",
+                                        "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled."
+                                      },
+                                      "allowed_external_domains": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "format": "hostname"
+                                        },
+                                        "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true."
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "CSS Asset Requirements",
+                                    "description": "Requirements for CSS creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "JavaScript Asset Requirements",
+                                    "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
+                                    "type": "object",
+                                    "properties": {
+                                      "max_file_size_kb": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum file size in kilobytes for the JavaScript asset"
+                                      },
+                                      "module_type": {
+                                        "type": "string",
+                                        "enum": [
+                                          "script",
+                                          "module",
+                                          "iife"
+                                        ],
+                                        "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+                                      },
+                                      "strict_mode_required": {
+                                        "type": "boolean",
+                                        "description": "Whether the JavaScript must use strict mode"
+                                      },
+                                      "external_resources_allowed": {
+                                        "type": "boolean",
+                                        "description": "Whether the JavaScript can load external resources dynamically"
+                                      },
+                                      "allowed_external_domains": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "format": "hostname"
+                                        },
+                                        "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true."
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "VAST Asset Requirements",
+                                    "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "vast_version": {
+                                        "type": "string",
+                                        "enum": [
+                                          "2.0",
+                                          "3.0",
+                                          "4.0",
+                                          "4.1",
+                                          "4.2"
+                                        ],
+                                        "description": "Required VAST version"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "DAAST Asset Requirements",
+                                    "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "daast_version": {
+                                        "type": "string",
+                                        "enum": [
+                                          "1.0"
+                                        ],
+                                        "description": "Required DAAST version. DAAST 1.0 is the current IAB standard."
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "URL Asset Requirements",
+                                    "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
+                                    "type": "object",
+                                    "properties": {
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "clickthrough",
+                                          "landing_page",
+                                          "impression_tracker",
+                                          "click_tracker",
+                                          "viewability_tracker",
+                                          "third_party_tracker"
+                                        ],
+                                        "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum."
+                                      },
+                                      "protocols": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "https",
+                                            "http"
+                                          ]
+                                        },
+                                        "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs."
+                                      },
+                                      "allowed_domains": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "format": "hostname"
+                                        },
+                                        "description": "List of allowed domains for the URL"
+                                      },
+                                      "max_length": {
+                                        "type": "integer",
+                                        "minimum": 1,
+                                        "description": "Maximum URL length in characters"
+                                      },
+                                      "macro_support": {
+                                        "type": "boolean",
+                                        "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  },
+                                  {
+                                    "title": "Webhook Asset Requirements",
+                                    "description": "Requirements for webhook creative assets.",
+                                    "type": "object",
+                                    "properties": {
+                                      "methods": {
+                                        "type": "array",
+                                        "items": {
+                                          "type": "string",
+                                          "enum": [
+                                            "GET",
+                                            "POST"
+                                          ]
+                                        },
+                                        "description": "Allowed HTTP methods"
+                                      }
+                                    },
+                                    "additionalProperties": true
+                                  }
+                                ]
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "asset_group_id",
+                              "asset_type"
+                            ],
+                            "additionalProperties": true,
+                            "examples": [
+                              {
+                                "description": "Headline constraint with count bounds",
+                                "data": {
+                                  "asset_group_id": "headlines",
+                                  "asset_type": "text",
+                                  "required": true,
+                                  "min_count": 3,
+                                  "max_count": 15
+                                }
+                              },
+                              {
+                                "description": "Landscape image constraint with count bounds",
+                                "data": {
+                                  "asset_group_id": "images_landscape",
+                                  "asset_type": "image",
+                                  "required": true,
+                                  "min_count": 1,
+                                  "max_count": 20
+                                }
+                              }
+                            ]
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        },
+                        "field_bindings": {
+                          "type": "array",
+                          "description": "Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional \u2014 creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id \u2192 catalog_field), asset pools (asset_id \u2192 asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.",
+                          "items": {
+                            "title": "Catalog Field Binding",
+                            "description": "Maps a format template slot to a catalog item field or typed asset pool. The 'kind' field identifies the binding variant. All bindings are optional \u2014 agents can still infer mappings without them.",
+                            "definitions": {
+                              "ScalarBinding": {
+                                "type": "object",
+                                "description": "Maps an individual format asset to a catalog item field via dot-notation path.",
+                                "properties": {
+                                  "kind": {
+                                    "type": "string",
+                                    "const": "scalar"
+                                  },
+                                  "asset_id": {
+                                    "type": "string",
+                                    "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
+                                  },
+                                  "catalog_field": {
+                                    "type": "string",
+                                    "description": "Dot-notation path to the field on the catalog item (e.g., 'name', 'price.amount', 'location.city')."
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "kind",
+                                  "asset_id",
+                                  "catalog_field"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "AssetPoolBinding": {
+                                "type": "object",
+                                "description": "Maps an individual format asset to a typed asset pool on the catalog item (e.g., images_landscape, images_vertical, logo). The format slot receives the first item in the pool.",
+                                "properties": {
+                                  "kind": {
+                                    "type": "string",
+                                    "const": "asset_pool"
+                                  },
+                                  "asset_id": {
+                                    "type": "string",
+                                    "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
+                                  },
+                                  "asset_group_id": {
+                                    "type": "string",
+                                    "description": "The asset_group_id on the catalog item's assets array to pull from (e.g., 'images_landscape', 'images_vertical', 'logo')."
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "kind",
+                                  "asset_id",
+                                  "asset_group_id"
+                                ],
+                                "additionalProperties": true
+                              }
+                            },
+                            "oneOf": [
+                              {
+                                "$ref": "#/definitions/ScalarBinding"
+                              },
+                              {
+                                "$ref": "#/definitions/AssetPoolBinding"
+                              },
+                              {
+                                "type": "object",
+                                "description": "A format repeatable_group where each repetition corresponds to one catalog item. Iterates the group over catalog items in catalog item order.",
+                                "properties": {
+                                  "kind": {
+                                    "type": "string",
+                                    "const": "catalog_group"
+                                  },
+                                  "format_group_id": {
+                                    "type": "string",
+                                    "description": "The asset_group_id of a repeatable_group in the format's assets array."
+                                  },
+                                  "catalog_item": {
+                                    "type": "boolean",
+                                    "const": true,
+                                    "description": "Each repetition of the format's repeatable_group maps to one item from the catalog."
+                                  },
+                                  "per_item_bindings": {
+                                    "type": "array",
+                                    "description": "Scalar and asset pool bindings that apply within each repetition of the group. Nested catalog_group bindings are not permitted.",
+                                    "items": {
+                                      "oneOf": [
+                                        {
+                                          "$ref": "#/definitions/ScalarBinding"
+                                        },
+                                        {
+                                          "$ref": "#/definitions/AssetPoolBinding"
+                                        }
+                                      ]
+                                    },
+                                    "minItems": 1
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "required": [
+                                  "kind",
+                                  "format_group_id",
+                                  "catalog_item"
+                                ],
+                                "additionalProperties": true
+                              }
+                            ],
+                            "examples": [
+                              {
+                                "description": "Scalar binding \u2014 hotel name to headline slot",
+                                "data": {
+                                  "kind": "scalar",
+                                  "asset_id": "headline",
+                                  "catalog_field": "name"
+                                }
+                              },
+                              {
+                                "description": "Scalar binding \u2014 nested field (nightly rate)",
+                                "data": {
+                                  "kind": "scalar",
+                                  "asset_id": "price_badge",
+                                  "catalog_field": "price.amount"
+                                }
+                              },
+                              {
+                                "description": "Asset pool binding \u2014 hero image from landscape pool",
+                                "data": {
+                                  "kind": "asset_pool",
+                                  "asset_id": "hero_image",
+                                  "asset_group_id": "images_landscape"
+                                }
+                              },
+                              {
+                                "description": "Asset pool binding \u2014 Snap vertical background from vertical pool",
+                                "data": {
+                                  "kind": "asset_pool",
+                                  "asset_id": "snap_background",
+                                  "asset_group_id": "images_vertical"
+                                }
+                              },
+                              {
+                                "description": "Catalog group binding \u2014 carousel where each slide is one hotel",
+                                "data": {
+                                  "kind": "catalog_group",
+                                  "format_group_id": "slide",
+                                  "catalog_item": true,
+                                  "per_item_bindings": [
+                                    {
+                                      "kind": "scalar",
+                                      "asset_id": "title",
+                                      "catalog_field": "name"
+                                    },
+                                    {
+                                      "kind": "scalar",
+                                      "asset_id": "price",
+                                      "catalog_field": "price.amount"
+                                    },
+                                    {
+                                      "kind": "asset_pool",
+                                      "asset_id": "image",
+                                      "asset_group_id": "images_landscape"
+                                    }
+                                  ]
+                                }
+                              }
+                            ]
+                          },
+                          "minItems": 1,
+                          "uniqueItems": true
+                        }
+                      },
+                      "required": [
+                        "catalog_type"
+                      ],
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                {
+                  "description": "Repeatable asset group (for carousels, slideshows, playlists, etc.)",
+                  "type": "object",
+                  "properties": {
+                    "item_type": {
+                      "type": "string",
+                      "const": "repeatable_group",
+                      "description": "Discriminator indicating this is a repeatable asset group"
+                    },
+                    "asset_group_id": {
+                      "type": "string",
+                      "description": "Identifier for this asset group (e.g., 'product', 'slide', 'card')"
+                    },
+                    "required": {
+                      "type": "boolean",
+                      "description": "Whether this asset group is required. If true, at least min_count repetitions must be provided."
+                    },
+                    "min_count": {
+                      "type": "integer",
+                      "description": "Minimum number of repetitions required (if group is required) or allowed (if optional)",
+                      "minimum": 0
+                    },
+                    "max_count": {
+                      "type": "integer",
+                      "description": "Maximum number of repetitions allowed",
+                      "minimum": 1
+                    },
+                    "selection_mode": {
+                      "type": "string",
+                      "description": "How the platform uses repetitions of this group. 'sequential' means all items display in order (carousels, playlists). 'optimize' means the platform selects the best-performing combination from alternatives (asset group optimization like Meta Advantage+ or Google Pmax).",
+                      "enum": [
+                        "sequential",
+                        "optimize"
+                      ],
+                      "default": "sequential"
+                    },
+                    "assets": {
+                      "type": "array",
+                      "description": "Assets within each repetition of this group",
+                      "items": {
+                        "oneOf": [
+                          {
+                            "description": "Image asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "image"
+                              },
+                              "requirements": {
+                                "title": "Image Asset Requirements",
+                                "description": "Requirements for image creative assets. These define the technical constraints for image files.",
+                                "type": "object",
+                                "properties": {
+                                  "min_width": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                  },
+                                  "max_width": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+                                  },
+                                  "min_height": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                  },
+                                  "max_height": {
+                                    "type": "number",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+                                  },
+                                  "unit": {
+                                    "title": "Dimension Unit",
+                                    "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+                                    "type": "string",
+                                    "enum": [
+                                      "px",
+                                      "dp",
+                                      "inches",
+                                      "cm",
+                                      "mm",
+                                      "pt"
+                                    ]
+                                  },
+                                  "aspect_ratio": {
+                                    "type": "string",
+                                    "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
+                                    "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')"
+                                  },
+                                  "formats": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "jpg",
+                                        "jpeg",
+                                        "png",
+                                        "gif",
+                                        "webp",
+                                        "svg",
+                                        "avif",
+                                        "tiff",
+                                        "pdf",
+                                        "eps"
+                                      ]
+                                    },
+                                    "description": "Accepted image file formats"
+                                  },
+                                  "min_dpi": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI."
+                                  },
+                                  "bleed": {
+                                    "type": "object",
+                                    "description": "Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.",
+                                    "oneOf": [
+                                      {
+                                        "properties": {
+                                          "uniform": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "description": "Same bleed on all four sides"
+                                          }
+                                        },
+                                        "required": [
+                                          "uniform"
+                                        ],
+                                        "additionalProperties": false
+                                      },
+                                      {
+                                        "properties": {
+                                          "top": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          },
+                                          "right": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          },
+                                          "bottom": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          },
+                                          "left": {
+                                            "type": "number",
+                                            "minimum": 0
+                                          }
+                                        },
+                                        "required": [
+                                          "top",
+                                          "right",
+                                          "bottom",
+                                          "left"
+                                        ],
+                                        "additionalProperties": false
+                                      }
+                                    ]
+                                  },
+                                  "color_space": {
+                                    "type": "string",
+                                    "enum": [
+                                      "rgb",
+                                      "cmyk",
+                                      "grayscale"
+                                    ],
+                                    "description": "Required color space. Print typically requires CMYK."
+                                  },
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  },
+                                  "transparency_required": {
+                                    "type": "boolean",
+                                    "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)"
+                                  },
+                                  "animation_allowed": {
+                                    "type": "boolean",
+                                    "description": "Whether animated images (GIF, animated WebP) are accepted"
+                                  },
+                                  "max_animation_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 0,
+                                    "description": "Maximum animation duration in milliseconds (if animation_allowed is true)"
+                                  },
+                                  "max_weight_grams": {
+                                    "type": "integer",
+                                    "exclusiveMinimum": 0,
+                                    "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels."
+                                  }
+                                },
+                                "if": {
+                                  "required": [
+                                    "min_dpi"
+                                  ]
+                                },
+                                "then": {
+                                  "required": [
+                                    "unit"
+                                  ]
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Video asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "video"
+                              },
+                              "requirements": {
+                                "title": "Video Asset Requirements",
+                                "description": "Requirements for video creative assets. These define the technical constraints for video files.",
+                                "type": "object",
+                                "properties": {
+                                  "min_width": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum width in pixels"
+                                  },
+                                  "max_width": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum width in pixels"
+                                  },
+                                  "min_height": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum height in pixels"
+                                  },
+                                  "max_height": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum height in pixels"
+                                  },
+                                  "aspect_ratio": {
+                                    "type": "string",
+                                    "pattern": "^\\d+:\\d+$",
+                                    "description": "Required aspect ratio (e.g., '16:9', '9:16')"
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum duration in milliseconds"
+                                  },
+                                  "max_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum duration in milliseconds"
+                                  },
+                                  "containers": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mp4",
+                                        "webm",
+                                        "mov",
+                                        "avi",
+                                        "mkv"
+                                      ]
+                                    },
+                                    "description": "Accepted video container formats"
+                                  },
+                                  "codecs": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "h264",
+                                        "h265",
+                                        "vp8",
+                                        "vp9",
+                                        "av1",
+                                        "prores"
+                                      ]
+                                    },
+                                    "description": "Accepted video codecs"
+                                  },
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  },
+                                  "min_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum video bitrate in kilobits per second"
+                                  },
+                                  "max_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum video bitrate in kilobits per second"
+                                  },
+                                  "frame_rates": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "number",
+                                      "minimum": 1
+                                    },
+                                    "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])"
+                                  },
+                                  "audio_required": {
+                                    "type": "boolean",
+                                    "description": "Whether the video must include an audio track"
+                                  },
+                                  "frame_rate_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "constant",
+                                      "variable"
+                                    ],
+                                    "description": "Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing."
+                                  },
+                                  "scan_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "progressive",
+                                      "interlaced"
+                                    ],
+                                    "description": "Required scan type. Modern delivery requires progressive scan."
+                                  },
+                                  "gop_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "closed",
+                                      "open"
+                                    ],
+                                    "description": "Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points."
+                                  },
+                                  "min_gop_interval_seconds": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "Minimum keyframe interval in seconds"
+                                  },
+                                  "max_gop_interval_seconds": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals."
+                                  },
+                                  "moov_atom_position": {
+                                    "type": "string",
+                                    "enum": [
+                                      "start",
+                                      "end"
+                                    ],
+                                    "description": "Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+                                  },
+                                  "audio_codecs": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "aac",
+                                        "pcm",
+                                        "ac3",
+                                        "eac3",
+                                        "mp3",
+                                        "opus",
+                                        "vorbis",
+                                        "flac"
+                                      ]
+                                    },
+                                    "description": "Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"
+                                  },
+                                  "audio_sample_rates": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "integer",
+                                      "minimum": 1
+                                    },
+                                    "description": "Accepted audio sample rates in Hz (e.g., [44100, 48000])"
+                                  },
+                                  "audio_channels": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mono",
+                                        "stereo",
+                                        "5.1",
+                                        "7.1"
+                                      ]
+                                    },
+                                    "description": "Accepted audio channel configurations"
+                                  },
+                                  "loudness_lufs": {
+                                    "type": "number",
+                                    "description": "Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)"
+                                  },
+                                  "loudness_tolerance_db": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)"
+                                  },
+                                  "true_peak_dbfs": {
+                                    "type": "number",
+                                    "description": "Maximum true peak level in dBFS (e.g., -2 for broadcast)"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Audio asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "audio"
+                              },
+                              "requirements": {
+                                "title": "Audio Asset Requirements",
+                                "description": "Requirements for audio creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum duration in milliseconds"
+                                  },
+                                  "max_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum duration in milliseconds"
+                                  },
+                                  "formats": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mp3",
+                                        "aac",
+                                        "wav",
+                                        "ogg",
+                                        "flac"
+                                      ]
+                                    },
+                                    "description": "Accepted audio file formats"
+                                  },
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  },
+                                  "sample_rates": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "integer",
+                                      "minimum": 1
+                                    },
+                                    "description": "Accepted sample rates in Hz (e.g., [44100, 48000])"
+                                  },
+                                  "channels": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "mono",
+                                        "stereo"
+                                      ]
+                                    },
+                                    "description": "Accepted audio channel configurations"
+                                  },
+                                  "min_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum audio bitrate in kilobits per second"
+                                  },
+                                  "max_bitrate_kbps": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum audio bitrate in kilobits per second"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Text asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "text"
+                              },
+                              "requirements": {
+                                "title": "Text Asset Requirements",
+                                "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
+                                "type": "object",
+                                "properties": {
+                                  "min_length": {
+                                    "type": "integer",
+                                    "minimum": 0,
+                                    "description": "Minimum character length"
+                                  },
+                                  "max_length": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum character length"
+                                  },
+                                  "min_lines": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum number of lines"
+                                  },
+                                  "max_lines": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum number of lines"
+                                  },
+                                  "character_pattern": {
+                                    "type": "string",
+                                    "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+                                  },
+                                  "prohibited_terms": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string"
+                                    },
+                                    "description": "List of prohibited words or phrases"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Markdown asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "markdown"
+                              },
+                              "requirements": {
+                                "title": "Markdown Asset Requirements",
+                                "description": "Requirements for markdown creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "max_length": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum character length"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "HTML asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "html"
+                              },
+                              "requirements": {
+                                "title": "HTML Asset Requirements",
+                                "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
+                                "type": "object",
+                                "properties": {
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes for the HTML asset"
+                                  },
+                                  "sandbox": {
+                                    "type": "string",
+                                    "enum": [
+                                      "none",
+                                      "iframe",
+                                      "safeframe",
+                                      "fencedframe"
+                                    ],
+                                    "default": "none",
+                                    "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+                                  },
+                                  "external_resources_allowed": {
+                                    "type": "boolean",
+                                    "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled."
+                                  },
+                                  "allowed_external_domains": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "format": "hostname"
+                                    },
+                                    "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true."
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "CSS asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "css"
+                              },
+                              "requirements": {
+                                "title": "CSS Asset Requirements",
+                                "description": "Requirements for CSS creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "JavaScript asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "javascript"
+                              },
+                              "requirements": {
+                                "title": "JavaScript Asset Requirements",
+                                "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
+                                "type": "object",
+                                "properties": {
+                                  "max_file_size_kb": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum file size in kilobytes for the JavaScript asset"
+                                  },
+                                  "module_type": {
+                                    "type": "string",
+                                    "enum": [
+                                      "script",
+                                      "module",
+                                      "iife"
+                                    ],
+                                    "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+                                  },
+                                  "strict_mode_required": {
+                                    "type": "boolean",
+                                    "description": "Whether the JavaScript must use strict mode"
+                                  },
+                                  "external_resources_allowed": {
+                                    "type": "boolean",
+                                    "description": "Whether the JavaScript can load external resources dynamically"
+                                  },
+                                  "allowed_external_domains": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "format": "hostname"
+                                    },
+                                    "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true."
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "VAST asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "vast"
+                              },
+                              "requirements": {
+                                "title": "VAST Asset Requirements",
+                                "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "vast_version": {
+                                    "type": "string",
+                                    "enum": [
+                                      "2.0",
+                                      "3.0",
+                                      "4.0",
+                                      "4.1",
+                                      "4.2"
+                                    ],
+                                    "description": "Required VAST version"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "DAAST asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "daast"
+                              },
+                              "requirements": {
+                                "title": "DAAST Asset Requirements",
+                                "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "daast_version": {
+                                    "type": "string",
+                                    "enum": [
+                                      "1.0"
+                                    ],
+                                    "description": "Required DAAST version. DAAST 1.0 is the current IAB standard."
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "URL asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "url"
+                              },
+                              "requirements": {
+                                "title": "URL Asset Requirements",
+                                "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
+                                "type": "object",
+                                "properties": {
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "clickthrough",
+                                      "landing_page",
+                                      "impression_tracker",
+                                      "click_tracker",
+                                      "viewability_tracker",
+                                      "third_party_tracker"
+                                    ],
+                                    "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum."
+                                  },
+                                  "protocols": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "https",
+                                        "http"
+                                      ]
+                                    },
+                                    "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs."
+                                  },
+                                  "allowed_domains": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "format": "hostname"
+                                    },
+                                    "description": "List of allowed domains for the URL"
+                                  },
+                                  "max_length": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Maximum URL length in characters"
+                                  },
+                                  "macro_support": {
+                                    "type": "boolean",
+                                    "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          },
+                          {
+                            "description": "Webhook asset in group",
+                            "allOf": [
+                              {
+                                "$ref": "#/$defs/baseGroupAsset"
+                              }
+                            ],
+                            "properties": {
+                              "asset_type": {
+                                "const": "webhook"
+                              },
+                              "requirements": {
+                                "title": "Webhook Asset Requirements",
+                                "description": "Requirements for webhook creative assets.",
+                                "type": "object",
+                                "properties": {
+                                  "methods": {
+                                    "type": "array",
+                                    "items": {
+                                      "type": "string",
+                                      "enum": [
+                                        "GET",
+                                        "POST"
+                                      ]
+                                    },
+                                    "description": "Allowed HTTP methods"
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            }
+                          }
+                        ]
+                      }
+                    }
+                  },
+                  "required": [
+                    "item_type",
+                    "asset_group_id",
+                    "required",
+                    "min_count",
+                    "max_count",
+                    "assets"
+                  ]
+                }
+              ]
+            }
+          },
+          "delivery": {
+            "type": "object",
+            "description": "Delivery method specifications (e.g., hosted, VAST, third-party tags)",
+            "additionalProperties": true
+          },
+          "supported_macros": {
+            "type": "array",
+            "description": "List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.",
+            "items": {
+              "oneOf": [
+                {
+                  "title": "Universal Macro",
+                  "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                  "type": "string",
+                  "enum": [
+                    "MEDIA_BUY_ID",
+                    "PACKAGE_ID",
+                    "CREATIVE_ID",
+                    "CACHEBUSTER",
+                    "TIMESTAMP",
+                    "CLICK_URL",
+                    "GDPR",
+                    "GDPR_CONSENT",
+                    "US_PRIVACY",
+                    "GPP_STRING",
+                    "GPP_SID",
+                    "IP_ADDRESS",
+                    "LIMIT_AD_TRACKING",
+                    "DEVICE_TYPE",
+                    "OS",
+                    "OS_VERSION",
+                    "DEVICE_MAKE",
+                    "DEVICE_MODEL",
+                    "USER_AGENT",
+                    "APP_BUNDLE",
+                    "APP_NAME",
+                    "COUNTRY",
+                    "REGION",
+                    "CITY",
+                    "ZIP",
+                    "DMA",
+                    "LAT",
+                    "LONG",
+                    "DEVICE_ID",
+                    "DEVICE_ID_TYPE",
+                    "DOMAIN",
+                    "PAGE_URL",
+                    "REFERRER",
+                    "KEYWORDS",
+                    "PLACEMENT_ID",
+                    "FOLD_POSITION",
+                    "AD_WIDTH",
+                    "AD_HEIGHT",
+                    "VIDEO_ID",
+                    "VIDEO_TITLE",
+                    "VIDEO_DURATION",
+                    "VIDEO_CATEGORY",
+                    "CONTENT_GENRE",
+                    "CONTENT_RATING",
+                    "PLAYER_WIDTH",
+                    "PLAYER_HEIGHT",
+                    "POD_POSITION",
+                    "POD_SIZE",
+                    "AD_BREAK_ID",
+                    "STATION_ID",
+                    "COLLECTION_NAME",
+                    "INSTALLMENT_ID",
+                    "AUDIO_DURATION",
+                    "TMPX",
+                    "AXEM",
+                    "CATALOG_ID",
+                    "SKU",
+                    "GTIN",
+                    "OFFERING_ID",
+                    "JOB_ID",
+                    "HOTEL_ID",
+                    "FLIGHT_ID",
+                    "VEHICLE_ID",
+                    "LISTING_ID",
+                    "STORE_ID",
+                    "PROGRAM_ID",
+                    "DESTINATION_ID",
+                    "CREATIVE_VARIANT_ID",
+                    "APP_ITEM_ID"
+                  ],
+                  "enumDescriptions": {
+                    "MEDIA_BUY_ID": "AdCP media buy identifier",
+                    "PACKAGE_ID": "AdCP package identifier",
+                    "CREATIVE_ID": "AdCP creative identifier",
+                    "CACHEBUSTER": "Random number to prevent caching",
+                    "TIMESTAMP": "Unix timestamp in milliseconds",
+                    "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                    "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                    "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                    "US_PRIVACY": "US Privacy (CCPA) string",
+                    "GPP_STRING": "Global Privacy Platform consent string",
+                    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                    "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                    "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                    "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                    "OS_VERSION": "OS version number",
+                    "DEVICE_MAKE": "Device manufacturer",
+                    "DEVICE_MODEL": "Device model identifier",
+                    "USER_AGENT": "Full user agent string",
+                    "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                    "APP_NAME": "Human-readable app name",
+                    "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                    "REGION": "State/province/region code",
+                    "CITY": "City name",
+                    "ZIP": "Postal code",
+                    "DMA": "Nielsen DMA code (US TV markets)",
+                    "LAT": "Latitude coordinate",
+                    "LONG": "Longitude coordinate",
+                    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                    "DOMAIN": "Domain where ad is shown",
+                    "PAGE_URL": "Full page URL (encoded)",
+                    "REFERRER": "HTTP referrer URL",
+                    "KEYWORDS": "Page keywords (comma-separated)",
+                    "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                    "AD_WIDTH": "Ad slot width in pixels",
+                    "AD_HEIGHT": "Ad slot height in pixels",
+                    "VIDEO_ID": "Content video identifier",
+                    "VIDEO_TITLE": "Content video title",
+                    "VIDEO_DURATION": "Content duration in seconds",
+                    "VIDEO_CATEGORY": "IAB content category",
+                    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                    "PLAYER_WIDTH": "Video player width in pixels",
+                    "PLAYER_HEIGHT": "Video player height in pixels",
+                    "POD_POSITION": "Position within ad break",
+                    "POD_SIZE": "Total ads in the ad break",
+                    "AD_BREAK_ID": "Unique ad break identifier",
+                    "STATION_ID": "Radio station or podcast identifier",
+                    "COLLECTION_NAME": "Program or collection name",
+                    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                    "AUDIO_DURATION": "Audio content duration in seconds",
+                    "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                    "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                    "SKU": "Product SKU identifier for the catalog item being rendered",
+                    "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                    "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                    "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                    "STORE_ID": "Store location identifier for the catalog item being rendered",
+                    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                  }
+                },
+                {
+                  "type": "string",
+                  "description": "Custom or publisher-specific macro name"
+                }
+              ]
+            }
+          },
+          "input_format_ids": {
+            "type": "array",
+            "description": "Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.",
+            "items": {
+              "title": "Format ID",
+              "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            }
+          },
+          "output_format_ids": {
+            "type": "array",
+            "description": "Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).",
+            "items": {
+              "title": "Format ID",
+              "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            }
+          },
+          "format_card": {
+            "type": "object",
+            "description": "Optional standard visual card (300x400px) for displaying this format in user interfaces. Can be rendered via preview_creative or pre-generated.",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Creative format defining the card layout (typically format_card_standard)",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "manifest": {
+                "type": "object",
+                "description": "Asset manifest for rendering the card, structure defined by the format",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "manifest"
+            ],
+            "additionalProperties": true
+          },
+          "accessibility": {
+            "type": "object",
+            "description": "Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.",
+            "properties": {
+              "wcag_level": {
+                "title": "WCAG Level",
+                "description": "WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level.",
+                "type": "string",
+                "enum": [
+                  "A",
+                  "AA",
+                  "AAA"
+                ],
+                "enumDescriptions": {
+                  "A": "Minimum level of conformance. Addresses the most basic accessibility barriers.",
+                  "AA": "Addresses the most common barriers for disabled users. Required by most accessibility regulations.",
+                  "AAA": "Highest level of conformance. Addresses the widest range of accessibility barriers."
+                }
+              },
+              "requires_accessible_assets": {
+                "type": "boolean",
+                "description": "When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties."
+              }
+            },
+            "required": [
+              "wcag_level"
+            ]
+          },
+          "supported_disclosure_positions": {
+            "type": "array",
+            "description": "Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees \u2014 creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.",
+            "items": {
+              "title": "Disclosure Position",
+              "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+              "type": "string",
+              "enum": [
+                "prominent",
+                "footer",
+                "audio",
+                "subtitle",
+                "overlay",
+                "end_card",
+                "pre_roll",
+                "companion"
+              ]
+            },
+            "minItems": 1,
+            "uniqueItems": true
+          },
+          "disclosure_capabilities": {
+            "type": "array",
+            "description": "Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "position": {
+                  "title": "Disclosure Position",
+                  "description": "The disclosure position",
+                  "type": "string",
+                  "enum": [
+                    "prominent",
+                    "footer",
+                    "audio",
+                    "subtitle",
+                    "overlay",
+                    "end_card",
+                    "pre_roll",
+                    "companion"
+                  ]
+                },
+                "persistence": {
+                  "type": "array",
+                  "description": "Persistence modes this position supports",
+                  "items": {
+                    "title": "Disclosure Persistence",
+                    "description": "How long a disclosure must persist during content playback or display. Different jurisdictions and regulations require different persistence behaviors for AI-generated content labels. When multiple sources specify persistence for the same jurisdiction (e.g., brief and provenance), the most restrictive mode applies: continuous > initial > flexible.",
+                    "type": "string",
+                    "enum": [
+                      "continuous",
+                      "initial",
+                      "flexible"
+                    ],
+                    "enumDescriptions": {
+                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                    }
+                  },
+                  "minItems": 1,
+                  "uniqueItems": true
+                }
+              },
+              "required": [
+                "position",
+                "persistence"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "format_card_detailed": {
+            "type": "object",
+            "description": "Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.",
+            "properties": {
+              "format_id": {
+                "title": "Format ID",
+                "description": "Creative format defining the detailed card layout (typically format_card_detailed)",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                  },
+                  "width": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "height": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                  },
+                  "duration_ms": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true,
+                "dependencies": {
+                  "width": [
+                    "height"
+                  ],
+                  "height": [
+                    "width"
+                  ]
+                }
+              },
+              "manifest": {
+                "type": "object",
+                "description": "Asset manifest for rendering the detailed card, structure defined by the format",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "format_id",
+              "manifest"
+            ],
+            "additionalProperties": true
+          },
+          "reported_metrics": {
+            "type": "array",
+            "description": "Metrics this format can produce in delivery reporting. Buyers receive the intersection of format reported_metrics and product available_metrics. If omitted, the format defers entirely to product-level metric declarations.",
+            "items": {
+              "title": "Available Metric",
+              "description": "Standard delivery and performance metrics available for reporting",
+              "type": "string",
+              "enum": [
+                "impressions",
+                "spend",
+                "clicks",
+                "ctr",
+                "video_completions",
+                "completion_rate",
+                "conversions",
+                "conversion_value",
+                "roas",
+                "cost_per_acquisition",
+                "new_to_brand_rate",
+                "viewability",
+                "engagement_rate",
+                "views",
+                "completed_views",
+                "leads",
+                "reach",
+                "frequency",
+                "grps",
+                "quartile_data",
+                "dooh_metrics",
+                "cost_per_click"
+              ]
+            },
+            "minItems": 1,
+            "uniqueItems": true
+          },
+          "pricing_options": {
+            "type": "array",
+            "description": "Pricing options for this format. Used by transformation and generation agents that charge per format adapted, per image generated, or per unit of work. Present when the request included include_pricing=true and account. Ad servers and library-based agents expose pricing on list_creatives instead.",
+            "items": {
+              "title": "Vendor Pricing Option",
+              "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+              "allOf": [
+                {
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id"
+                  ]
+                },
+                {
+                  "title": "Vendor Pricing",
+                  "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                  "type": "object",
+                  "oneOf": [
+                    {
+                      "title": "CpmPricing",
+                      "description": "Fixed cost per thousand impressions",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "cpm"
+                        },
+                        "cpm": {
+                          "type": "number",
+                          "description": "Cost per thousand impressions",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "cpm",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PercentOfMediaPricing",
+                      "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "percent_of_media"
+                        },
+                        "percent": {
+                          "type": "number",
+                          "description": "Percentage of media spend, e.g. 15 = 15%",
+                          "minimum": 0,
+                          "maximum": 100
+                        },
+                        "max_cpm": {
+                          "type": "number",
+                          "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code for the resulting charge",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "percent",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "FlatFeePricing",
+                      "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "flat_fee"
+                        },
+                        "amount": {
+                          "type": "number",
+                          "description": "Fixed charge for the billing period",
+                          "minimum": 0
+                        },
+                        "period": {
+                          "type": "string",
+                          "enum": [
+                            "monthly",
+                            "quarterly",
+                            "annual",
+                            "campaign"
+                          ],
+                          "description": "Billing period for the flat fee."
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "amount",
+                        "period",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PerUnitPricing",
+                      "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "per_unit"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                        },
+                        "unit_price": {
+                          "type": "number",
+                          "description": "Cost per one unit",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "unit",
+                        "unit_price",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                }
+              ]
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "format_id",
+          "name"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "creative_agents": {
+      "type": "array",
+      "description": "Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
+          },
+          "agent_name": {
+            "type": "string",
+            "description": "Human-readable name for the creative agent"
+          },
+          "capabilities": {
+            "type": "array",
+            "description": "Capabilities this creative agent provides",
+            "items": {
+              "title": "Creative Agent Capability",
+              "description": "Capabilities supported by creative agents for format handling",
+              "type": "string",
+              "enum": [
+                "validation",
+                "assembly",
+                "generation",
+                "preview",
+                "delivery"
+              ]
+            }
+          }
+        },
+        "required": [
+          "agent_url"
+        ]
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings (e.g., format availability issues)",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "formats"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.405Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/log-event-request.json b/schemas/cache/bundled/media-buy/log-event-request.json
new file mode 100644
index 000000000..7fd486068
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/log-event-request.json
@@ -0,0 +1,391 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Log Event Request",
+  "description": "Request parameters for logging marketing events",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "event_source_id": {
+      "type": "string",
+      "description": "Event source configured on the account via sync_event_sources"
+    },
+    "test_event_code": {
+      "type": "string",
+      "description": "Test event code for validation without affecting production data. Events with this code appear in the platform's test events UI."
+    },
+    "events": {
+      "type": "array",
+      "description": "Events to log",
+      "items": {
+        "title": "Event",
+        "description": "A marketing event (conversion, engagement, or custom) for attribution and optimization",
+        "type": "object",
+        "properties": {
+          "event_id": {
+            "type": "string",
+            "description": "Unique identifier for deduplication (scoped to event_type + event_source_id)",
+            "minLength": 1,
+            "maxLength": 256
+          },
+          "event_type": {
+            "title": "Event Type",
+            "description": "Standard event type",
+            "type": "string",
+            "enum": [
+              "page_view",
+              "view_content",
+              "select_content",
+              "select_item",
+              "search",
+              "share",
+              "add_to_cart",
+              "remove_from_cart",
+              "viewed_cart",
+              "add_to_wishlist",
+              "initiate_checkout",
+              "add_payment_info",
+              "purchase",
+              "refund",
+              "lead",
+              "qualify_lead",
+              "close_convert_lead",
+              "disqualify_lead",
+              "complete_registration",
+              "subscribe",
+              "start_trial",
+              "app_install",
+              "app_launch",
+              "contact",
+              "schedule",
+              "donate",
+              "submit_application",
+              "custom"
+            ],
+            "enumDescriptions": {
+              "page_view": "User viewed a page",
+              "view_content": "User viewed specific content (product, article, etc.)",
+              "select_content": "User selected or clicked on content (article, video, etc.)",
+              "select_item": "User selected a specific product or item from a list",
+              "search": "User performed a search",
+              "share": "User shared content via social or messaging",
+              "add_to_cart": "User added an item to cart",
+              "remove_from_cart": "User removed an item from cart",
+              "viewed_cart": "User viewed their shopping cart",
+              "add_to_wishlist": "User added an item to a wishlist",
+              "initiate_checkout": "User started checkout process",
+              "add_payment_info": "User added payment information",
+              "purchase": "User completed a purchase",
+              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+              "lead": "User expressed interest (form submission, signup, etc.)",
+              "qualify_lead": "Lead qualified by sales or scoring criteria",
+              "close_convert_lead": "Lead converted to a customer or closed deal",
+              "disqualify_lead": "Lead disqualified or marked as not viable",
+              "complete_registration": "User completed account registration",
+              "subscribe": "User subscribed to a service or newsletter",
+              "start_trial": "User started a free trial",
+              "app_install": "User installed an application",
+              "app_launch": "User launched an application",
+              "contact": "User initiated contact (call, message, etc.)",
+              "schedule": "User scheduled an appointment or event",
+              "donate": "User made a donation",
+              "submit_application": "User submitted an application (loan, job, etc.)",
+              "custom": "Custom event type (specify in custom_event_name)"
+            }
+          },
+          "event_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 timestamp when the event occurred"
+          },
+          "user_match": {
+            "title": "User Match",
+            "description": "User identifiers for attribution matching",
+            "type": "object",
+            "properties": {
+              "uids": {
+                "type": "array",
+                "description": "Universal ID values for user matching",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "title": "UID Type",
+                      "description": "Universal ID type",
+                      "type": "string",
+                      "enum": [
+                        "rampid",
+                        "rampid_derived",
+                        "id5",
+                        "uid2",
+                        "euid",
+                        "pairid",
+                        "maid",
+                        "hashed_email",
+                        "publisher_first_party",
+                        "other"
+                      ],
+                      "enumDescriptions": {
+                        "rampid": "LiveRamp RampID maintained form (XY, 32 bytes on the wire)",
+                        "rampid_derived": "LiveRamp RampID derived form (Xi, 48 bytes on the wire)",
+                        "id5": "ID5 universal ID",
+                        "uid2": "Unified ID 2.0",
+                        "euid": "European Unified ID",
+                        "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+                        "maid": "Mobile Advertising ID (IDFA/GAID)",
+                        "hashed_email": "SHA-256 hashed email address",
+                        "publisher_first_party": "Publisher's own first-party identifier, opaque to buyers",
+                        "other": "Other universal ID type (specify in ext)"
+                      }
+                    },
+                    "value": {
+                      "type": "string",
+                      "description": "Universal ID value"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "value"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "hashed_email": {
+                "type": "string",
+                "description": "SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.",
+                "pattern": "^[a-f0-9]{64}$"
+              },
+              "hashed_phone": {
+                "type": "string",
+                "description": "SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.",
+                "pattern": "^[a-f0-9]{64}$"
+              },
+              "click_id": {
+                "type": "string",
+                "description": "Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)"
+              },
+              "click_id_type": {
+                "type": "string",
+                "description": "Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)"
+              },
+              "client_ip": {
+                "type": "string",
+                "description": "Client IP address for probabilistic matching"
+              },
+              "client_user_agent": {
+                "type": "string",
+                "description": "Client user agent string for probabilistic matching"
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "anyOf": [
+              {
+                "required": [
+                  "uids"
+                ]
+              },
+              {
+                "required": [
+                  "hashed_email"
+                ]
+              },
+              {
+                "required": [
+                  "hashed_phone"
+                ]
+              },
+              {
+                "required": [
+                  "click_id"
+                ]
+              },
+              {
+                "required": [
+                  "client_ip",
+                  "client_user_agent"
+                ]
+              }
+            ],
+            "additionalProperties": true
+          },
+          "custom_data": {
+            "title": "Event Custom Data",
+            "description": "Event-specific data (value, currency, items, etc.)",
+            "type": "object",
+            "properties": {
+              "value": {
+                "type": "number",
+                "description": "Monetary value of the event (should be accompanied by currency)",
+                "minimum": 0
+              },
+              "currency": {
+                "type": "string",
+                "pattern": "^[A-Z]{3}$",
+                "description": "ISO 4217 currency code"
+              },
+              "order_id": {
+                "type": "string",
+                "description": "Unique order or transaction identifier"
+              },
+              "content_ids": {
+                "type": "array",
+                "description": "Item identifiers for catalog attribution. Values are matched against catalog items using the identifier type declared by the catalog's content_id_type field (e.g., SKUs, GTINs, or vertical-specific IDs like job_id).",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "content_type": {
+                "type": "string",
+                "description": "Category of content associated with the event (e.g., 'product', 'job', 'hotel'). Corresponds to the catalog type when used for catalog attribution."
+              },
+              "content_name": {
+                "type": "string",
+                "description": "Name of the product or content"
+              },
+              "content_category": {
+                "type": "string",
+                "description": "Category of the product or content"
+              },
+              "num_items": {
+                "type": "integer",
+                "description": "Number of items in the event",
+                "minimum": 0
+              },
+              "search_string": {
+                "type": "string",
+                "description": "Search query for search events"
+              },
+              "contents": {
+                "type": "array",
+                "description": "Per-item details for e-commerce events",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "id": {
+                      "type": "string",
+                      "description": "Product or content identifier"
+                    },
+                    "quantity": {
+                      "type": "integer",
+                      "description": "Quantity of this item",
+                      "minimum": 1
+                    },
+                    "price": {
+                      "type": "number",
+                      "description": "Price per unit of this item",
+                      "minimum": 0
+                    },
+                    "brand": {
+                      "type": "string",
+                      "description": "Brand name of this item"
+                    }
+                  },
+                  "required": [
+                    "id"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "additionalProperties": true
+          },
+          "action_source": {
+            "title": "Action Source",
+            "description": "Where the event originated",
+            "type": "string",
+            "enum": [
+              "website",
+              "app",
+              "offline",
+              "phone_call",
+              "chat",
+              "email",
+              "in_store",
+              "system_generated",
+              "other"
+            ],
+            "enumDescriptions": {
+              "website": "Event occurred on a website",
+              "app": "Event occurred in a mobile or desktop app",
+              "offline": "Event occurred offline (imported data)",
+              "phone_call": "Event originated from a phone call",
+              "chat": "Event originated from a chat conversation",
+              "email": "Event originated from an email interaction",
+              "in_store": "Event occurred at a physical retail location",
+              "system_generated": "Event generated by an automated system",
+              "other": "Other source (specify in ext)"
+            }
+          },
+          "event_source_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL where the event occurred (required when action_source is 'website')"
+          },
+          "custom_event_name": {
+            "type": "string",
+            "description": "Name for custom events (used when event_type is 'custom')"
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "event_id",
+          "event_type",
+          "event_time"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1,
+      "maxItems": 10000
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate event logging on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "event_source_id",
+    "events"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.408Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/log-event-response.json b/schemas/cache/bundled/media-buy/log-event-response.json
new file mode 100644
index 000000000..500ceddb0
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/log-event-response.json
@@ -0,0 +1,192 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Log Event Response",
+  "description": "Response from event logging operation. Returns either event processing results OR operation-level errors.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "LogEventSuccess",
+      "description": "Success response - events received and queued for processing",
+      "type": "object",
+      "properties": {
+        "events_received": {
+          "type": "integer",
+          "description": "Number of events received",
+          "minimum": 0
+        },
+        "events_processed": {
+          "type": "integer",
+          "description": "Number of events successfully queued for processing",
+          "minimum": 0
+        },
+        "partial_failures": {
+          "type": "array",
+          "description": "Events that failed validation",
+          "items": {
+            "type": "object",
+            "properties": {
+              "event_id": {
+                "type": "string",
+                "description": "ID of the failed event"
+              },
+              "code": {
+                "type": "string",
+                "description": "Error code"
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              }
+            },
+            "required": [
+              "event_id",
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "warnings": {
+          "type": "array",
+          "description": "Non-fatal issues (low match quality, missing recommended fields, deprecation notices)",
+          "items": {
+            "type": "string"
+          }
+        },
+        "match_quality": {
+          "type": "number",
+          "description": "Overall match quality score for the batch (0.0 = no matches, 1.0 = all matched)",
+          "minimum": 0,
+          "maximum": 1
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "events_received",
+        "events_processed"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "LogEventError",
+      "description": "Error response - request failed entirely",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "events_received"
+            ]
+          },
+          {
+            "required": [
+              "events_processed"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.408Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/package-request.json b/schemas/cache/bundled/media-buy/package-request.json
new file mode 100644
index 000000000..212d26363
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/package-request.json
@@ -0,0 +1,8278 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Package Request",
+  "description": "Package configuration for media buy creation",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "product_id": {
+      "type": "string",
+      "description": "Product ID for this package"
+    },
+    "format_ids": {
+      "type": "array",
+      "description": "Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.",
+      "items": {
+        "title": "Format ID",
+        "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+        "type": "object",
+        "properties": {
+          "agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+          },
+          "id": {
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$",
+            "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+          },
+          "width": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "height": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+          },
+          "duration_ms": {
+            "type": "number",
+            "minimum": 1,
+            "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+          }
+        },
+        "required": [
+          "agent_url",
+          "id"
+        ],
+        "additionalProperties": true,
+        "dependencies": {
+          "width": [
+            "height"
+          ],
+          "height": [
+            "width"
+          ]
+        }
+      },
+      "minItems": 1
+    },
+    "budget": {
+      "type": "number",
+      "description": "Budget allocation for this package in the media buy's currency",
+      "minimum": 0
+    },
+    "pacing": {
+      "title": "Pacing",
+      "description": "Budget pacing strategy",
+      "type": "string",
+      "enum": [
+        "even",
+        "asap",
+        "front_loaded"
+      ],
+      "enumDescriptions": {
+        "even": "Allocate remaining budget evenly over remaining campaign duration (default)",
+        "asap": "Spend remaining budget as quickly as possible",
+        "front_loaded": "Allocate more remaining budget earlier in the remaining campaign period"
+      }
+    },
+    "pricing_option_id": {
+      "type": "string",
+      "description": "ID of the selected pricing option from the product's pricing_options array"
+    },
+    "bid_price": {
+      "type": "number",
+      "description": "Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+      "minimum": 0
+    },
+    "impressions": {
+      "type": "number",
+      "description": "Impression goal for this package",
+      "minimum": 0
+    },
+    "start_time": {
+      "type": "string",
+      "format": "date-time",
+      "not": {
+        "const": "asap"
+      },
+      "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
+    },
+    "end_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
+    },
+    "paused": {
+      "type": "boolean",
+      "description": "Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.",
+      "default": false
+    },
+    "catalogs": {
+      "type": "array",
+      "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.",
+      "items": {
+        "title": "Catalog",
+        "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+        "type": "object",
+        "properties": {
+          "catalog_id": {
+            "type": "string",
+            "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+          },
+          "type": {
+            "title": "Catalog Type",
+            "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+            "type": "string",
+            "enum": [
+              "offering",
+              "product",
+              "inventory",
+              "store",
+              "promotion",
+              "hotel",
+              "flight",
+              "job",
+              "vehicle",
+              "real_estate",
+              "education",
+              "destination",
+              "app"
+            ]
+          },
+          "url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+          },
+          "feed_format": {
+            "title": "Feed Format",
+            "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+            "type": "string",
+            "enum": [
+              "google_merchant_center",
+              "facebook_catalog",
+              "shopify",
+              "linkedin_jobs",
+              "custom"
+            ]
+          },
+          "update_frequency": {
+            "title": "Update Frequency",
+            "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+            "type": "string",
+            "enum": [
+              "realtime",
+              "hourly",
+              "daily",
+              "weekly"
+            ]
+          },
+          "items": {
+            "type": "array",
+            "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            "items": {
+              "type": "object"
+            },
+            "minItems": 1
+          },
+          "ids": {
+            "type": "array",
+            "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "gtins": {
+            "type": "array",
+            "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            "items": {
+              "type": "string",
+              "pattern": "^[0-9]{8,14}$"
+            },
+            "minItems": 1
+          },
+          "tags": {
+            "type": "array",
+            "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "category": {
+            "type": "string",
+            "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+          },
+          "query": {
+            "type": "string",
+            "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+          },
+          "conversion_events": {
+            "type": "array",
+            "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            "items": {
+              "title": "Event Type",
+              "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+              "type": "string",
+              "enum": [
+                "page_view",
+                "view_content",
+                "select_content",
+                "select_item",
+                "search",
+                "share",
+                "add_to_cart",
+                "remove_from_cart",
+                "viewed_cart",
+                "add_to_wishlist",
+                "initiate_checkout",
+                "add_payment_info",
+                "purchase",
+                "refund",
+                "lead",
+                "qualify_lead",
+                "close_convert_lead",
+                "disqualify_lead",
+                "complete_registration",
+                "subscribe",
+                "start_trial",
+                "app_install",
+                "app_launch",
+                "contact",
+                "schedule",
+                "donate",
+                "submit_application",
+                "custom"
+              ],
+              "enumDescriptions": {
+                "page_view": "User viewed a page",
+                "view_content": "User viewed specific content (product, article, etc.)",
+                "select_content": "User selected or clicked on content (article, video, etc.)",
+                "select_item": "User selected a specific product or item from a list",
+                "search": "User performed a search",
+                "share": "User shared content via social or messaging",
+                "add_to_cart": "User added an item to cart",
+                "remove_from_cart": "User removed an item from cart",
+                "viewed_cart": "User viewed their shopping cart",
+                "add_to_wishlist": "User added an item to a wishlist",
+                "initiate_checkout": "User started checkout process",
+                "add_payment_info": "User added payment information",
+                "purchase": "User completed a purchase",
+                "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                "lead": "User expressed interest (form submission, signup, etc.)",
+                "qualify_lead": "Lead qualified by sales or scoring criteria",
+                "close_convert_lead": "Lead converted to a customer or closed deal",
+                "disqualify_lead": "Lead disqualified or marked as not viable",
+                "complete_registration": "User completed account registration",
+                "subscribe": "User subscribed to a service or newsletter",
+                "start_trial": "User started a free trial",
+                "app_install": "User installed an application",
+                "app_launch": "User launched an application",
+                "contact": "User initiated contact (call, message, etc.)",
+                "schedule": "User scheduled an appointment or event",
+                "donate": "User made a donation",
+                "submit_application": "User submitted an application (loan, job, etc.)",
+                "custom": "Custom event type (specify in custom_event_name)"
+              }
+            },
+            "minItems": 1,
+            "uniqueItems": true
+          },
+          "content_id_type": {
+            "title": "Content ID Type",
+            "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            "type": "string",
+            "enum": [
+              "sku",
+              "gtin",
+              "offering_id",
+              "job_id",
+              "hotel_id",
+              "flight_id",
+              "vehicle_id",
+              "listing_id",
+              "store_id",
+              "program_id",
+              "destination_id",
+              "app_id"
+            ]
+          },
+          "feed_field_mappings": {
+            "type": "array",
+            "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+            "items": {
+              "title": "Catalog Field Mapping",
+              "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+              "type": "object",
+              "properties": {
+                "feed_field": {
+                  "type": "string",
+                  "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                },
+                "catalog_field": {
+                  "type": "string",
+                  "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                },
+                "asset_group_id": {
+                  "type": "string",
+                  "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                },
+                "value": {
+                  "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                },
+                "transform": {
+                  "type": "string",
+                  "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                  "enum": [
+                    "date",
+                    "divide",
+                    "boolean",
+                    "split"
+                  ]
+                },
+                "format": {
+                  "type": "string",
+                  "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                },
+                "timezone": {
+                  "type": "string",
+                  "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                },
+                "by": {
+                  "type": "number",
+                  "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                  "exclusiveMinimum": 0
+                },
+                "separator": {
+                  "type": "string",
+                  "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                  "default": ","
+                },
+                "default": {
+                  "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "allOf": [
+                {
+                  "not": {
+                    "required": [
+                      "feed_field",
+                      "value"
+                    ]
+                  }
+                },
+                {
+                  "not": {
+                    "required": [
+                      "catalog_field",
+                      "asset_group_id"
+                    ]
+                  }
+                }
+              ],
+              "additionalProperties": true,
+              "examples": [
+                {
+                  "description": "Simple field rename",
+                  "data": {
+                    "feed_field": "hotel_name",
+                    "catalog_field": "name"
+                  }
+                },
+                {
+                  "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                  "data": {
+                    "feed_field": "available_from",
+                    "catalog_field": "valid_from",
+                    "transform": "date",
+                    "format": "YYYYMMDD",
+                    "timezone": "UTC"
+                  }
+                },
+                {
+                  "description": "Divide cents to dollars",
+                  "data": {
+                    "feed_field": "price_cents",
+                    "catalog_field": "price.amount",
+                    "transform": "divide",
+                    "by": 100
+                  }
+                },
+                {
+                  "description": "Static literal injection \u2014 currency not in feed",
+                  "data": {
+                    "catalog_field": "price.currency",
+                    "value": "USD"
+                  }
+                },
+                {
+                  "description": "Image URL assigned to typed asset pool",
+                  "data": {
+                    "feed_field": "primary_photo_url",
+                    "asset_group_id": "images_landscape"
+                  }
+                },
+                {
+                  "description": "Vertical photo URL assigned to vertical pool",
+                  "data": {
+                    "feed_field": "portrait_photo_url",
+                    "asset_group_id": "images_vertical"
+                  }
+                },
+                {
+                  "description": "Split comma-separated tags to array",
+                  "data": {
+                    "feed_field": "amenity_list",
+                    "catalog_field": "amenities",
+                    "transform": "split",
+                    "separator": ","
+                  }
+                },
+                {
+                  "description": "Boolean coercion with default",
+                  "data": {
+                    "feed_field": "is_available",
+                    "catalog_field": "available",
+                    "transform": "boolean",
+                    "default": false
+                  }
+                }
+              ]
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "type"
+        ],
+        "additionalProperties": true,
+        "examples": [
+          {
+            "description": "Synced product catalog from Google Merchant Center",
+            "data": {
+              "catalog_id": "gmc-primary",
+              "name": "Primary Product Feed",
+              "type": "product",
+              "url": "https://feeds.acmecorp.com/products.xml",
+              "feed_format": "google_merchant_center",
+              "update_frequency": "daily"
+            }
+          },
+          {
+            "description": "Inventory feed for store-level stock data",
+            "data": {
+              "catalog_id": "store-inventory",
+              "name": "Store Inventory",
+              "type": "inventory",
+              "url": "https://feeds.acmecorp.com/inventory.json",
+              "feed_format": "custom",
+              "update_frequency": "hourly"
+            }
+          },
+          {
+            "description": "Store locator feed",
+            "data": {
+              "catalog_id": "retail-locations",
+              "name": "Retail Locations",
+              "type": "store",
+              "url": "https://feeds.acmecorp.com/stores.json",
+              "feed_format": "custom",
+              "update_frequency": "weekly"
+            }
+          },
+          {
+            "description": "Promotional pricing feed",
+            "data": {
+              "catalog_id": "summer-sale",
+              "name": "Summer Sale Promotions",
+              "type": "promotion",
+              "url": "https://feeds.acmecorp.com/promotions.json",
+              "feed_format": "google_merchant_center",
+              "update_frequency": "daily"
+            }
+          },
+          {
+            "description": "Inline offering catalog (no sync needed)",
+            "data": {
+              "type": "offering",
+              "items": [
+                {
+                  "offering_id": "summer-sale",
+                  "name": "Summer Sale",
+                  "landing_url": "https://acme.com/summer"
+                }
+              ]
+            }
+          },
+          {
+            "description": "Reference to a previously synced catalog by ID",
+            "data": {
+              "catalog_id": "gmc-primary",
+              "type": "product",
+              "ids": [
+                "SKU-12345",
+                "SKU-67890"
+              ]
+            }
+          },
+          {
+            "description": "Product catalog with GTIN cross-retailer matching and attribution",
+            "data": {
+              "type": "product",
+              "gtins": [
+                "00013000006040",
+                "00013000006057"
+              ],
+              "content_id_type": "gtin",
+              "conversion_events": [
+                "purchase",
+                "add_to_cart"
+              ]
+            }
+          },
+          {
+            "description": "Inline store catalog with catchment areas",
+            "data": {
+              "catalog_id": "retail-locations",
+              "name": "Retail Locations",
+              "type": "store",
+              "items": [
+                {
+                  "store_id": "amsterdam-flagship",
+                  "name": "Amsterdam Flagship",
+                  "location": {
+                    "lat": 52.3676,
+                    "lng": 4.9041
+                  },
+                  "catchments": [
+                    {
+                      "catchment_id": "walk",
+                      "travel_time": {
+                        "value": 10,
+                        "unit": "min"
+                      },
+                      "transport_mode": "walking"
+                    },
+                    {
+                      "catchment_id": "drive",
+                      "travel_time": {
+                        "value": 15,
+                        "unit": "min"
+                      },
+                      "transport_mode": "driving"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        ]
+      }
+    },
+    "optimization_goals": {
+      "type": "array",
+      "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
+      "items": {
+        "title": "Optimization Goal",
+        "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
+        "oneOf": [
+          {
+            "type": "object",
+            "description": "Optimize for a seller-tracked delivery metric. No event source required \u2014 the seller tracks these natively.",
+            "properties": {
+              "kind": {
+                "type": "string",
+                "const": "metric"
+              },
+              "metric": {
+                "type": "string",
+                "enum": [
+                  "clicks",
+                  "views",
+                  "completed_views",
+                  "viewed_seconds",
+                  "attention_seconds",
+                  "attention_score",
+                  "engagements",
+                  "follows",
+                  "saves",
+                  "profile_visits",
+                  "reach"
+                ],
+                "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+              },
+              "reach_unit": {
+                "allOf": [
+                  {
+                    "title": "Reach Unit",
+                    "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                    "type": "string",
+                    "enum": [
+                      "individuals",
+                      "households",
+                      "devices",
+                      "accounts",
+                      "cookies",
+                      "custom"
+                    ],
+                    "enumDescriptions": {
+                      "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                      "households": "Unique households or TV homes.",
+                      "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                      "accounts": "Unique logged-in accounts (platform-specific identity).",
+                      "cookies": "Unique browser cookies.",
+                      "custom": "Publisher-defined reach unit. Describe in ext."
+                    }
+                  }
+                ],
+                "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+              },
+              "target_frequency": {
+                "type": "object",
+                "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
+                "properties": {
+                  "min": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1)."
+                  },
+                  "max": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point."
+                  },
+                  "window": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
+                  }
+                },
+                "required": [
+                  "window"
+                ],
+                "anyOf": [
+                  {
+                    "required": [
+                      "min"
+                    ]
+                  },
+                  {
+                    "required": [
+                      "max"
+                    ]
+                  }
+                ],
+                "additionalProperties": true
+              },
+              "view_duration_seconds": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies."
+              },
+              "target": {
+                "description": "Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.",
+                "oneOf": [
+                  {
+                    "type": "object",
+                    "description": "Target cost per unit of the metric (e.g., cost per click, cost per completed view).",
+                    "properties": {
+                      "kind": {
+                        "type": "string",
+                        "const": "cost_per"
+                      },
+                      "value": {
+                        "type": "number",
+                        "exclusiveMinimum": 0,
+                        "description": "Target cost per metric unit in the buy currency"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "type": "object",
+                    "description": "Minimum per-impression rate for this metric. The metric defines the units: proportions for count metrics (e.g., 0.001 for 0.1% CTR, 0.70 for 70% viewability), seconds for duration metrics (e.g., 3.0 for 3s in view), or score for score metrics.",
+                    "properties": {
+                      "kind": {
+                        "type": "string",
+                        "const": "threshold_rate"
+                      },
+                      "value": {
+                        "type": "number",
+                        "exclusiveMinimum": 0,
+                        "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score)."
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  }
+                ]
+              },
+              "priority": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+              }
+            },
+            "required": [
+              "kind",
+              "metric"
+            ],
+            "additionalProperties": true
+          },
+          {
+            "type": "object",
+            "description": "Optimize for advertiser-tracked conversion events. Requires event sources registered via sync_event_sources.",
+            "properties": {
+              "kind": {
+                "type": "string",
+                "const": "event"
+              },
+              "event_sources": {
+                "type": "array",
+                "description": "Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries \u2014 the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "event_source_id": {
+                      "type": "string",
+                      "minLength": 1,
+                      "description": "Event source to include (must be configured on this account via sync_event_sources)"
+                    },
+                    "event_type": {
+                      "title": "Event Type",
+                      "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)",
+                      "type": "string",
+                      "enum": [
+                        "page_view",
+                        "view_content",
+                        "select_content",
+                        "select_item",
+                        "search",
+                        "share",
+                        "add_to_cart",
+                        "remove_from_cart",
+                        "viewed_cart",
+                        "add_to_wishlist",
+                        "initiate_checkout",
+                        "add_payment_info",
+                        "purchase",
+                        "refund",
+                        "lead",
+                        "qualify_lead",
+                        "close_convert_lead",
+                        "disqualify_lead",
+                        "complete_registration",
+                        "subscribe",
+                        "start_trial",
+                        "app_install",
+                        "app_launch",
+                        "contact",
+                        "schedule",
+                        "donate",
+                        "submit_application",
+                        "custom"
+                      ],
+                      "enumDescriptions": {
+                        "page_view": "User viewed a page",
+                        "view_content": "User viewed specific content (product, article, etc.)",
+                        "select_content": "User selected or clicked on content (article, video, etc.)",
+                        "select_item": "User selected a specific product or item from a list",
+                        "search": "User performed a search",
+                        "share": "User shared content via social or messaging",
+                        "add_to_cart": "User added an item to cart",
+                        "remove_from_cart": "User removed an item from cart",
+                        "viewed_cart": "User viewed their shopping cart",
+                        "add_to_wishlist": "User added an item to a wishlist",
+                        "initiate_checkout": "User started checkout process",
+                        "add_payment_info": "User added payment information",
+                        "purchase": "User completed a purchase",
+                        "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                        "lead": "User expressed interest (form submission, signup, etc.)",
+                        "qualify_lead": "Lead qualified by sales or scoring criteria",
+                        "close_convert_lead": "Lead converted to a customer or closed deal",
+                        "disqualify_lead": "Lead disqualified or marked as not viable",
+                        "complete_registration": "User completed account registration",
+                        "subscribe": "User subscribed to a service or newsletter",
+                        "start_trial": "User started a free trial",
+                        "app_install": "User installed an application",
+                        "app_launch": "User launched an application",
+                        "contact": "User initiated contact (call, message, etc.)",
+                        "schedule": "User scheduled an appointment or event",
+                        "donate": "User made a donation",
+                        "submit_application": "User submitted an application (loan, job, etc.)",
+                        "custom": "Custom event type (specify in custom_event_name)"
+                      }
+                    },
+                    "custom_event_name": {
+                      "type": "string",
+                      "description": "Required when event_type is 'custom'. Platform-specific name for the custom event."
+                    },
+                    "value_field": {
+                      "type": "string",
+                      "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' \u2014 sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism."
+                    },
+                    "value_factor": {
+                      "type": "number",
+                      "default": 1,
+                      "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics."
+                    }
+                  },
+                  "required": [
+                    "event_source_id",
+                    "event_type"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "target": {
+                "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget \u2014 regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.",
+                "oneOf": [
+                  {
+                    "type": "object",
+                    "description": "Target cost per conversion event (after deduplication across event_sources).",
+                    "properties": {
+                      "kind": {
+                        "type": "string",
+                        "const": "cost_per"
+                      },
+                      "value": {
+                        "type": "number",
+                        "exclusiveMinimum": 0,
+                        "description": "Target cost per event in the buy currency"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "type": "object",
+                    "description": "Target return per unit of ad spend, calculated as sum(value_field * value_factor) / spend across all deduplicated events. Requires value_field on at least one event_sources entry.",
+                    "properties": {
+                      "kind": {
+                        "type": "string",
+                        "const": "per_ad_spend"
+                      },
+                      "value": {
+                        "type": "number",
+                        "exclusiveMinimum": 0,
+                        "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "type": "object",
+                    "description": "Maximize total conversion value within budget, without a specific return ratio target. Steers spend toward higher-value conversions rather than maximizing conversion count. Requires value_field on at least one event_sources entry.",
+                    "properties": {
+                      "kind": {
+                        "type": "string",
+                        "const": "maximize_value"
+                      }
+                    },
+                    "required": [
+                      "kind"
+                    ],
+                    "additionalProperties": true
+                  }
+                ]
+              },
+              "attribution_window": {
+                "type": "object",
+                "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
+                "properties": {
+                  "post_click": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
+                  },
+                  "post_view": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
+                  }
+                },
+                "required": [
+                  "post_click"
+                ],
+                "additionalProperties": true
+              },
+              "priority": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+              }
+            },
+            "required": [
+              "kind",
+              "event_sources"
+            ],
+            "additionalProperties": true
+          }
+        ]
+      },
+      "minItems": 1
+    },
+    "targeting_overlay": {
+      "title": "Targeting Overlay",
+      "description": "Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).",
+      "type": "object",
+      "properties": {
+        "geo_countries": {
+          "type": "array",
+          "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          },
+          "minItems": 1
+        },
+        "geo_countries_exclude": {
+          "type": "array",
+          "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          },
+          "minItems": 1
+        },
+        "geo_regions": {
+          "type": "array",
+          "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+          },
+          "minItems": 1
+        },
+        "geo_regions_exclude": {
+          "type": "array",
+          "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+          },
+          "minItems": 1
+        },
+        "geo_metros": {
+          "type": "array",
+          "description": "Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "system": {
+                "title": "Metro Area System",
+                "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                "type": "string",
+                "enum": [
+                  "nielsen_dma",
+                  "uk_itl1",
+                  "uk_itl2",
+                  "eurostat_nuts2",
+                  "custom"
+                ]
+              },
+              "values": {
+                "type": "array",
+                "description": "Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "system",
+              "values"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "geo_metros_exclude": {
+          "type": "array",
+          "description": "Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "system": {
+                "title": "Metro Area System",
+                "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                "type": "string",
+                "enum": [
+                  "nielsen_dma",
+                  "uk_itl1",
+                  "uk_itl2",
+                  "eurostat_nuts2",
+                  "custom"
+                ]
+              },
+              "values": {
+                "type": "array",
+                "description": "Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "system",
+              "values"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "geo_postal_areas": {
+          "type": "array",
+          "description": "Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "system": {
+                "title": "Postal Code System",
+                "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                "type": "string",
+                "enum": [
+                  "us_zip",
+                  "us_zip_plus_four",
+                  "gb_outward",
+                  "gb_full",
+                  "ca_fsa",
+                  "ca_full",
+                  "de_plz",
+                  "fr_code_postal",
+                  "au_postcode",
+                  "ch_plz",
+                  "at_plz"
+                ]
+              },
+              "values": {
+                "type": "array",
+                "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "system",
+              "values"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "geo_postal_areas_exclude": {
+          "type": "array",
+          "description": "Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "system": {
+                "title": "Postal Code System",
+                "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                "type": "string",
+                "enum": [
+                  "us_zip",
+                  "us_zip_plus_four",
+                  "gb_outward",
+                  "gb_full",
+                  "ca_fsa",
+                  "ca_full",
+                  "de_plz",
+                  "fr_code_postal",
+                  "au_postcode",
+                  "ch_plz",
+                  "at_plz"
+                ]
+              },
+              "values": {
+                "type": "array",
+                "description": "Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "system",
+              "values"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "daypart_targets": {
+          "type": "array",
+          "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
+          "items": {
+            "title": "Daypart Target",
+            "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+            "type": "object",
+            "properties": {
+              "days": {
+                "type": "array",
+                "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
+                "items": {
+                  "title": "Day of Week",
+                  "description": "Days of the week for daypart targeting",
+                  "type": "string",
+                  "enum": [
+                    "monday",
+                    "tuesday",
+                    "wednesday",
+                    "thursday",
+                    "friday",
+                    "saturday",
+                    "sunday"
+                  ]
+                },
+                "minItems": 1
+              },
+              "start_hour": {
+                "type": "integer",
+                "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+                "minimum": 0,
+                "maximum": 23
+              },
+              "end_hour": {
+                "type": "integer",
+                "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
+                "minimum": 1,
+                "maximum": 24
+              },
+              "label": {
+                "type": "string",
+                "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+              }
+            },
+            "required": [
+              "days",
+              "start_hour",
+              "end_hour"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "axe_include_segment": {
+          "type": "string",
+          "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
+          "deprecated": true
+        },
+        "axe_exclude_segment": {
+          "type": "string",
+          "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
+          "deprecated": true
+        },
+        "audience_include": {
+          "type": "array",
+          "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "audience_exclude": {
+          "type": "array",
+          "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "frequency_cap": {
+          "title": "Frequency Cap",
+          "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
+          "type": "object",
+          "properties": {
+            "suppress": {
+              "allOf": [
+                {
+                  "title": "Duration",
+                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                  "type": "object",
+                  "properties": {
+                    "interval": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                    },
+                    "unit": {
+                      "type": "string",
+                      "enum": [
+                        "seconds",
+                        "minutes",
+                        "hours",
+                        "days",
+                        "campaign"
+                      ],
+                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                    }
+                  },
+                  "required": [
+                    "interval",
+                    "unit"
+                  ],
+                  "additionalProperties": false
+                }
+              ],
+              "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+            },
+            "suppress_minutes": {
+              "type": "number",
+              "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+              "minimum": 0
+            },
+            "max_impressions": {
+              "type": "integer",
+              "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+              "minimum": 1
+            },
+            "per": {
+              "allOf": [
+                {
+                  "title": "Reach Unit",
+                  "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                  "type": "string",
+                  "enum": [
+                    "individuals",
+                    "households",
+                    "devices",
+                    "accounts",
+                    "cookies",
+                    "custom"
+                  ],
+                  "enumDescriptions": {
+                    "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                    "households": "Unique households or TV homes.",
+                    "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                    "accounts": "Unique logged-in accounts (platform-specific identity).",
+                    "cookies": "Unique browser cookies.",
+                    "custom": "Publisher-defined reach unit. Describe in ext."
+                  }
+                }
+              ],
+              "description": "Entity granularity for impression counting. Required when max_impressions is set."
+            },
+            "window": {
+              "allOf": [
+                {
+                  "title": "Duration",
+                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                  "type": "object",
+                  "properties": {
+                    "interval": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                    },
+                    "unit": {
+                      "type": "string",
+                      "enum": [
+                        "seconds",
+                        "minutes",
+                        "hours",
+                        "days",
+                        "campaign"
+                      ],
+                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                    }
+                  },
+                  "required": [
+                    "interval",
+                    "unit"
+                  ],
+                  "additionalProperties": false
+                }
+              ],
+              "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+            }
+          },
+          "anyOf": [
+            {
+              "required": [
+                "suppress"
+              ]
+            },
+            {
+              "required": [
+                "suppress_minutes"
+              ]
+            },
+            {
+              "required": [
+                "max_impressions"
+              ]
+            }
+          ],
+          "dependencies": {
+            "max_impressions": [
+              "per",
+              "window"
+            ],
+            "per": [
+              "max_impressions"
+            ],
+            "window": [
+              "max_impressions"
+            ]
+          },
+          "additionalProperties": true
+        },
+        "property_list": {
+          "title": "Property List Reference",
+          "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+          "type": "object",
+          "properties": {
+            "agent_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL of the agent managing the property list"
+            },
+            "list_id": {
+              "type": "string",
+              "description": "Identifier for the property list within the agent",
+              "minLength": 1
+            },
+            "auth_token": {
+              "type": "string",
+              "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+            }
+          },
+          "required": [
+            "agent_url",
+            "list_id"
+          ],
+          "additionalProperties": false
+        },
+        "collection_list": {
+          "title": "Collection List Reference",
+          "description": "Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.",
+          "type": "object",
+          "properties": {
+            "agent_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL of the agent managing the collection list"
+            },
+            "list_id": {
+              "type": "string",
+              "description": "Identifier for the collection list within the agent",
+              "minLength": 1
+            },
+            "auth_token": {
+              "type": "string",
+              "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+            }
+          },
+          "required": [
+            "agent_url",
+            "list_id"
+          ],
+          "additionalProperties": false
+        },
+        "collection_list_exclude": {
+          "title": "Collection List Reference",
+          "description": "Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+          "type": "object",
+          "properties": {
+            "agent_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL of the agent managing the collection list"
+            },
+            "list_id": {
+              "type": "string",
+              "description": "Identifier for the collection list within the agent",
+              "minLength": 1
+            },
+            "auth_token": {
+              "type": "string",
+              "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+            }
+          },
+          "required": [
+            "agent_url",
+            "list_id"
+          ],
+          "additionalProperties": false
+        },
+        "age_restriction": {
+          "type": "object",
+          "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
+          "properties": {
+            "min": {
+              "type": "integer",
+              "minimum": 13,
+              "maximum": 99,
+              "description": "Minimum age required"
+            },
+            "verification_required": {
+              "type": "boolean",
+              "default": false,
+              "description": "Whether verified age (not inferred) is required for compliance"
+            },
+            "accepted_methods": {
+              "type": "array",
+              "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
+              "items": {
+                "title": "Age Verification Method",
+                "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+                "type": "string",
+                "enum": [
+                  "facial_age_estimation",
+                  "id_document",
+                  "digital_id",
+                  "credit_card",
+                  "world_id"
+                ]
+              },
+              "minItems": 1
+            }
+          },
+          "required": [
+            "min"
+          ],
+          "additionalProperties": false
+        },
+        "device_platform": {
+          "type": "array",
+          "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
+          "items": {
+            "title": "Device Platform",
+            "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
+            "type": "string",
+            "enum": [
+              "ios",
+              "android",
+              "windows",
+              "macos",
+              "linux",
+              "chromeos",
+              "tvos",
+              "tizen",
+              "webos",
+              "fire_os",
+              "roku_os",
+              "unknown"
+            ]
+          },
+          "minItems": 1
+        },
+        "device_type": {
+          "type": "array",
+          "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+          "items": {
+            "title": "Device Type",
+            "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+            "type": "string",
+            "enum": [
+              "desktop",
+              "mobile",
+              "tablet",
+              "ctv",
+              "dooh",
+              "unknown"
+            ]
+          },
+          "minItems": 1
+        },
+        "device_type_exclude": {
+          "type": "array",
+          "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+          "items": {
+            "title": "Device Type",
+            "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+            "type": "string",
+            "enum": [
+              "desktop",
+              "mobile",
+              "tablet",
+              "ctv",
+              "dooh",
+              "unknown"
+            ]
+          },
+          "minItems": 1
+        },
+        "store_catchments": {
+          "type": "array",
+          "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "catalog_id": {
+                "type": "string",
+                "description": "Synced store-type catalog ID from sync_catalogs."
+              },
+              "store_ids": {
+                "type": "array",
+                "description": "Filter to specific stores within the catalog. Omit to target all stores.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              },
+              "catchment_ids": {
+                "type": "array",
+                "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "catalog_id"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "geo_proximity": {
+          "type": "array",
+          "description": "Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics \u2014 a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "lat": {
+                "type": "number",
+                "minimum": -90,
+                "maximum": 90,
+                "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+              },
+              "lng": {
+                "type": "number",
+                "minimum": -180,
+                "maximum": 180,
+                "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+              },
+              "label": {
+                "type": "string",
+                "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area')."
+              },
+              "travel_time": {
+                "type": "object",
+                "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
+                "properties": {
+                  "value": {
+                    "type": "number",
+                    "minimum": 1,
+                    "description": "Travel time limit."
+                  },
+                  "unit": {
+                    "type": "string",
+                    "enum": [
+                      "min",
+                      "hr"
+                    ],
+                    "description": "Time unit."
+                  }
+                },
+                "required": [
+                  "value",
+                  "unit"
+                ],
+                "additionalProperties": false
+              },
+              "transport_mode": {
+                "title": "Transport Mode",
+                "description": "Transportation mode for isochrone calculation. Required when travel_time is provided.",
+                "type": "string",
+                "enum": [
+                  "walking",
+                  "cycling",
+                  "driving",
+                  "public_transport"
+                ],
+                "enumDescriptions": {
+                  "walking": "Pedestrian travel on walkable paths and sidewalks",
+                  "cycling": "Bicycle travel on roads and cycle paths",
+                  "driving": "Motor vehicle travel on road networks",
+                  "public_transport": "Public transit including bus, rail, metro, and ferry"
+                }
+              },
+              "radius": {
+                "type": "object",
+                "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
+                "properties": {
+                  "value": {
+                    "type": "number",
+                    "exclusiveMinimum": 0,
+                    "description": "Radius distance."
+                  },
+                  "unit": {
+                    "title": "Distance Unit",
+                    "description": "Distance unit.",
+                    "type": "string",
+                    "enum": [
+                      "km",
+                      "mi",
+                      "m"
+                    ],
+                    "enumDescriptions": {
+                      "km": "Kilometers",
+                      "mi": "Miles",
+                      "m": "Meters"
+                    }
+                  }
+                },
+                "required": [
+                  "value",
+                  "unit"
+                ],
+                "additionalProperties": false
+              },
+              "geometry": {
+                "type": "object",
+                "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "enum": [
+                      "Polygon",
+                      "MultiPolygon"
+                    ],
+                    "description": "GeoJSON geometry type."
+                  },
+                  "coordinates": {
+                    "type": "array",
+                    "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+                  }
+                },
+                "required": [
+                  "type",
+                  "coordinates"
+                ],
+                "additionalProperties": false
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "oneOf": [
+              {
+                "required": [
+                  "lat",
+                  "lng",
+                  "travel_time",
+                  "transport_mode"
+                ],
+                "not": {
+                  "anyOf": [
+                    {
+                      "required": [
+                        "radius"
+                      ]
+                    },
+                    {
+                      "required": [
+                        "geometry"
+                      ]
+                    }
+                  ]
+                }
+              },
+              {
+                "required": [
+                  "lat",
+                  "lng",
+                  "radius"
+                ],
+                "not": {
+                  "anyOf": [
+                    {
+                      "required": [
+                        "travel_time"
+                      ]
+                    },
+                    {
+                      "required": [
+                        "geometry"
+                      ]
+                    }
+                  ]
+                }
+              },
+              {
+                "required": [
+                  "geometry"
+                ],
+                "not": {
+                  "anyOf": [
+                    {
+                      "required": [
+                        "travel_time"
+                      ]
+                    },
+                    {
+                      "required": [
+                        "radius"
+                      ]
+                    }
+                  ]
+                }
+              }
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "language": {
+          "type": "array",
+          "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+          "items": {
+            "type": "string",
+            "pattern": "^[a-z]{2}$"
+          },
+          "minItems": 1
+        },
+        "keyword_targets": {
+          "type": "array",
+          "description": "Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) \u2014 the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "keyword": {
+                "type": "string",
+                "minLength": 1,
+                "description": "The keyword to target"
+              },
+              "match_type": {
+                "type": "string",
+                "enum": [
+                  "broad",
+                  "phrase",
+                  "exact"
+                ],
+                "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly"
+              },
+              "bid_price": {
+                "type": "number",
+                "minimum": 0,
+                "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies."
+              }
+            },
+            "required": [
+              "keyword",
+              "match_type"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "negative_keywords": {
+          "type": "array",
+          "description": "Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "keyword": {
+                "type": "string",
+                "minLength": 1,
+                "description": "The keyword to exclude"
+              },
+              "match_type": {
+                "type": "string",
+                "enum": [
+                  "broad",
+                  "phrase",
+                  "exact"
+                ],
+                "description": "Match type for exclusion"
+              }
+            },
+            "required": [
+              "keyword",
+              "match_type"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        }
+      },
+      "additionalProperties": true
+    },
+    "measurement_terms": {
+      "title": "Measurement Terms",
+      "description": "Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply.",
+      "type": "object",
+      "properties": {
+        "billing_measurement": {
+          "type": "object",
+          "description": "Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV).",
+          "properties": {
+            "vendor": {
+              "title": "Brand Reference",
+              "description": "Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "max_variance_percent": {
+              "type": "number",
+              "minimum": 0,
+              "exclusiveMaximum": 100,
+              "description": "Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review)."
+            },
+            "measurement_window": {
+              "type": "string",
+              "description": "Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+              "examples": [
+                "live",
+                "c3",
+                "c7",
+                "tentative",
+                "final",
+                "post_ivt",
+                "post_sivt",
+                "downloads_30d"
+              ]
+            }
+          },
+          "required": [
+            "vendor"
+          ],
+          "additionalProperties": true
+        },
+        "makegood_policy": {
+          "type": "object",
+          "description": "Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.",
+          "properties": {
+            "available_remedies": {
+              "type": "array",
+              "description": "Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.",
+              "items": {
+                "title": "Makegood Remedy",
+                "description": "Remedy types available when a performance standard or billing measurement threshold is breached.",
+                "type": "string",
+                "enum": [
+                  "additional_delivery",
+                  "credit",
+                  "invoice_adjustment"
+                ],
+                "enumDescriptions": {
+                  "additional_delivery": "Seller extends or adds impressions to compensate for the shortfall. Delivery is like-for-like on the same campaign or a subsequent campaign within the same account.",
+                  "credit": "Seller issues a credit toward future media buys on the same account.",
+                  "invoice_adjustment": "Seller reduces the invoice for the current media buy to reflect actual delivered value."
+                }
+              },
+              "minItems": 1,
+              "uniqueItems": true
+            }
+          },
+          "required": [
+            "available_remedies"
+          ],
+          "additionalProperties": true
+        }
+      },
+      "additionalProperties": true
+    },
+    "performance_standards": {
+      "type": "array",
+      "description": "Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+      "items": {
+        "title": "Performance Standard",
+        "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+        "type": "object",
+        "properties": {
+          "metric": {
+            "title": "Performance Standard Metric",
+            "description": "The performance metric this standard applies to.",
+            "type": "string",
+            "enum": [
+              "viewability",
+              "ivt",
+              "completion_rate",
+              "brand_safety",
+              "attention_score"
+            ],
+            "enumDescriptions": {
+              "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+              "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+              "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+              "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+              "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+            }
+          },
+          "threshold": {
+            "type": "number",
+            "minimum": 0,
+            "maximum": 1,
+            "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+          },
+          "standard": {
+            "title": "Viewability Standard",
+            "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            "type": "string",
+            "enum": [
+              "mrc",
+              "groupm"
+            ],
+            "enumDescriptions": {
+              "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+              "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+            }
+          },
+          "vendor": {
+            "title": "Brand Reference",
+            "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            "type": "object",
+            "properties": {
+              "domain": {
+                "type": "string",
+                "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "brand_id": {
+                "title": "Brand ID",
+                "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                "type": "string",
+                "pattern": "^[a-z0-9_]+$",
+                "examples": [
+                  "tide",
+                  "cheerios",
+                  "air_jordan",
+                  "nike",
+                  "pampers"
+                ]
+              }
+            },
+            "required": [
+              "domain"
+            ],
+            "additionalProperties": false,
+            "examples": [
+              {
+                "domain": "nova-brands.com",
+                "brand_id": "spark"
+              },
+              {
+                "domain": "nova-brands.com",
+                "brand_id": "glow"
+              },
+              {
+                "domain": "acme-corp.com"
+              }
+            ]
+          }
+        },
+        "required": [
+          "metric",
+          "threshold",
+          "vendor"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "creative_assignments": {
+      "type": "array",
+      "description": "Assign existing library creatives to this package with optional weights and placement targeting",
+      "items": {
+        "title": "Creative Assignment",
+        "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
+        "type": "object",
+        "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "Unique identifier for the creative"
+          },
+          "weight": {
+            "type": "number",
+            "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+            "minimum": 0,
+            "maximum": 100
+          },
+          "placement_ids": {
+            "type": "array",
+            "description": "Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "creative_id"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "creatives": {
+      "type": "array",
+      "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
+      "items": {
+        "title": "Creative Asset",
+        "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party snippets",
+        "type": "object",
+        "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "Unique identifier for the creative"
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable creative name"
+          },
+          "format_id": {
+            "title": "Format ID",
+            "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.",
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+              },
+              "width": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "height": {
+                "type": "integer",
+                "minimum": 1,
+                "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+              },
+              "duration_ms": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+              }
+            },
+            "required": [
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true,
+            "dependencies": {
+              "width": [
+                "height"
+              ],
+              "height": [
+                "width"
+              ]
+            }
+          },
+          "assets": {
+            "type": "object",
+            "description": "Assets required by the format, keyed by asset_id",
+            "patternProperties": {
+              "^[a-z0-9_]+$": {
+                "anyOf": [
+                  {
+                    "title": "Image Asset",
+                    "description": "Image asset with URL and dimensions",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the image asset"
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels"
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels"
+                      },
+                      "format": {
+                        "type": "string",
+                        "description": "Image file format (jpg, png, gif, webp, etc.)"
+                      },
+                      "alt_text": {
+                        "type": "string",
+                        "description": "Alternative text for accessibility",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "width",
+                      "height"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Video Asset",
+                    "description": "Video asset with URL and technical specifications including audio track properties",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the video asset"
+                      },
+                      "width": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Width in pixels"
+                      },
+                      "height": {
+                        "type": "integer",
+                        "minimum": 1,
+                        "description": "Height in pixels"
+                      },
+                      "duration_ms": {
+                        "type": "integer",
+                        "description": "Video duration in milliseconds",
+                        "minimum": 1
+                      },
+                      "file_size_bytes": {
+                        "type": "integer",
+                        "description": "File size in bytes",
+                        "minimum": 1
+                      },
+                      "container_format": {
+                        "type": "string",
+                        "description": "Video container format (mp4, webm, mov, etc.)"
+                      },
+                      "video_codec": {
+                        "type": "string",
+                        "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                      },
+                      "video_bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Video stream bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "frame_rate": {
+                        "type": "string",
+                        "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                      },
+                      "frame_rate_type": {
+                        "type": "string",
+                        "enum": [
+                          "constant",
+                          "variable"
+                        ],
+                        "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                      },
+                      "scan_type": {
+                        "type": "string",
+                        "enum": [
+                          "progressive",
+                          "interlaced"
+                        ],
+                        "description": "Scan type of the video"
+                      },
+                      "color_space": {
+                        "type": "string",
+                        "enum": [
+                          "rec709",
+                          "rec2020",
+                          "rec2100",
+                          "srgb",
+                          "dci_p3"
+                        ],
+                        "description": "Color space of the video"
+                      },
+                      "hdr_format": {
+                        "type": "string",
+                        "enum": [
+                          "sdr",
+                          "hdr10",
+                          "hdr10_plus",
+                          "hlg",
+                          "dolby_vision"
+                        ],
+                        "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                      },
+                      "chroma_subsampling": {
+                        "type": "string",
+                        "enum": [
+                          "4:2:0",
+                          "4:2:2",
+                          "4:4:4"
+                        ],
+                        "description": "Chroma subsampling format"
+                      },
+                      "video_bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          8,
+                          10,
+                          12
+                        ],
+                        "description": "Video bit depth"
+                      },
+                      "gop_interval_seconds": {
+                        "type": "number",
+                        "description": "GOP/keyframe interval in seconds"
+                      },
+                      "gop_type": {
+                        "type": "string",
+                        "enum": [
+                          "closed",
+                          "open"
+                        ],
+                        "description": "GOP structure type"
+                      },
+                      "moov_atom_position": {
+                        "type": "string",
+                        "enum": [
+                          "start",
+                          "end"
+                        ],
+                        "description": "Position of moov atom in MP4 container"
+                      },
+                      "has_audio": {
+                        "type": "boolean",
+                        "description": "Whether the video contains an audio track"
+                      },
+                      "audio_codec": {
+                        "type": "string",
+                        "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                      },
+                      "audio_sampling_rate_hz": {
+                        "type": "integer",
+                        "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                      },
+                      "audio_channels": {
+                        "type": "string",
+                        "enum": [
+                          "mono",
+                          "stereo",
+                          "5.1",
+                          "7.1"
+                        ],
+                        "description": "Audio channel configuration"
+                      },
+                      "audio_bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          16,
+                          24,
+                          32
+                        ],
+                        "description": "Audio bit depth"
+                      },
+                      "audio_bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Audio bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "audio_loudness_lufs": {
+                        "type": "number",
+                        "description": "Integrated loudness in LUFS"
+                      },
+                      "audio_true_peak_dbfs": {
+                        "type": "number",
+                        "description": "True peak level in dBFS"
+                      },
+                      "captions_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to captions file (WebVTT, SRT, etc.)",
+                        "x-accessibility": true
+                      },
+                      "transcript_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to text transcript of the video content",
+                        "x-accessibility": true
+                      },
+                      "audio_description_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to audio description track for visually impaired users",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "width",
+                      "height"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Audio Asset",
+                    "description": "Audio asset with URL and technical specifications",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to the audio asset"
+                      },
+                      "duration_ms": {
+                        "type": "integer",
+                        "description": "Audio duration in milliseconds",
+                        "minimum": 0
+                      },
+                      "file_size_bytes": {
+                        "type": "integer",
+                        "description": "File size in bytes",
+                        "minimum": 1
+                      },
+                      "container_format": {
+                        "type": "string",
+                        "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                      },
+                      "codec": {
+                        "type": "string",
+                        "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                      },
+                      "sampling_rate_hz": {
+                        "type": "integer",
+                        "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                      },
+                      "channels": {
+                        "type": "string",
+                        "enum": [
+                          "mono",
+                          "stereo",
+                          "5.1",
+                          "7.1"
+                        ],
+                        "description": "Channel configuration"
+                      },
+                      "bit_depth": {
+                        "type": "integer",
+                        "enum": [
+                          16,
+                          24,
+                          32
+                        ],
+                        "description": "Bit depth"
+                      },
+                      "bitrate_kbps": {
+                        "type": "integer",
+                        "description": "Bitrate in kilobits per second",
+                        "minimum": 1
+                      },
+                      "loudness_lufs": {
+                        "type": "number",
+                        "description": "Integrated loudness in LUFS"
+                      },
+                      "true_peak_dbfs": {
+                        "type": "number",
+                        "description": "True peak level in dBFS"
+                      },
+                      "transcript_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL to text transcript of the audio content",
+                        "x-accessibility": true
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "VAST Asset",
+                    "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "url",
+                            "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL endpoint that returns VAST XML"
+                          },
+                          "vast_version": {
+                            "title": "VAST Version",
+                            "description": "VAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "2.0",
+                              "3.0",
+                              "4.0",
+                              "4.1",
+                              "4.2"
+                            ]
+                          },
+                          "vpaid_enabled": {
+                            "type": "boolean",
+                            "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected video duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "VAST Tracking Event",
+                              "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "rewind",
+                                "skip",
+                                "playerExpand",
+                                "playerCollapse",
+                                "fullscreen",
+                                "exitFullscreen",
+                                "progress",
+                                "notUsed",
+                                "otherAdInteraction",
+                                "interactiveStart",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "closeLinear",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this VAST tag"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "inline",
+                            "description": "Discriminator indicating VAST is delivered as inline XML content"
+                          },
+                          "content": {
+                            "type": "string",
+                            "description": "Inline VAST XML content"
+                          },
+                          "vast_version": {
+                            "title": "VAST Version",
+                            "description": "VAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "2.0",
+                              "3.0",
+                              "4.0",
+                              "4.1",
+                              "4.2"
+                            ]
+                          },
+                          "vpaid_enabled": {
+                            "type": "boolean",
+                            "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected video duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "VAST Tracking Event",
+                              "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "rewind",
+                                "skip",
+                                "playerExpand",
+                                "playerCollapse",
+                                "fullscreen",
+                                "exitFullscreen",
+                                "progress",
+                                "notUsed",
+                                "otherAdInteraction",
+                                "interactiveStart",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "closeLinear",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this VAST tag"
+                          },
+                          "captions_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to captions file (WebVTT, SRT, etc.)",
+                            "x-accessibility": true
+                          },
+                          "audio_description_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to audio description track for visually impaired users",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Text Asset",
+                    "description": "Text content asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "Text content"
+                      },
+                      "language": {
+                        "type": "string",
+                        "description": "Language code (e.g., 'en', 'es', 'fr')"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "URL Asset",
+                    "description": "URL reference asset",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL reference"
+                      },
+                      "url_type": {
+                        "title": "URL Asset Type",
+                        "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                        "type": "string",
+                        "enum": [
+                          "clickthrough",
+                          "tracker_pixel",
+                          "tracker_script"
+                        ]
+                      },
+                      "description": {
+                        "type": "string",
+                        "description": "Description of what this URL points to"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "HTML Asset",
+                    "description": "HTML content asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "HTML content"
+                      },
+                      "version": {
+                        "type": "string",
+                        "description": "HTML version (e.g., 'HTML5')"
+                      },
+                      "accessibility": {
+                        "type": "object",
+                        "description": "Self-declared accessibility properties for this opaque creative",
+                        "x-accessibility": true,
+                        "properties": {
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Text alternative describing the creative content"
+                          },
+                          "keyboard_navigable": {
+                            "type": "boolean",
+                            "description": "Whether the creative can be fully operated via keyboard"
+                          },
+                          "motion_control": {
+                            "type": "boolean",
+                            "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                          },
+                          "screen_reader_tested": {
+                            "type": "boolean",
+                            "description": "Whether the creative has been tested with screen readers"
+                          }
+                        }
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "JavaScript Asset",
+                    "description": "JavaScript code asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "JavaScript content"
+                      },
+                      "module_type": {
+                        "title": "JavaScript Module Type",
+                        "description": "JavaScript module type",
+                        "type": "string",
+                        "enum": [
+                          "esm",
+                          "commonjs",
+                          "script"
+                        ]
+                      },
+                      "accessibility": {
+                        "type": "object",
+                        "description": "Self-declared accessibility properties for this opaque creative",
+                        "x-accessibility": true,
+                        "properties": {
+                          "alt_text": {
+                            "type": "string",
+                            "description": "Text alternative describing the creative content"
+                          },
+                          "keyboard_navigable": {
+                            "type": "boolean",
+                            "description": "Whether the creative can be fully operated via keyboard"
+                          },
+                          "motion_control": {
+                            "type": "boolean",
+                            "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                          },
+                          "screen_reader_tested": {
+                            "type": "boolean",
+                            "description": "Whether the creative has been tested with screen readers"
+                          }
+                        }
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Webhook Asset",
+                    "description": "Webhook for server-side dynamic content rendering (DCO)",
+                    "type": "object",
+                    "properties": {
+                      "url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "Webhook URL to call for dynamic content"
+                      },
+                      "method": {
+                        "title": "HTTP Method",
+                        "description": "HTTP method",
+                        "type": "string",
+                        "enum": [
+                          "GET",
+                          "POST"
+                        ],
+                        "default": "POST"
+                      },
+                      "timeout_ms": {
+                        "type": "integer",
+                        "minimum": 10,
+                        "maximum": 5000,
+                        "default": 500,
+                        "description": "Maximum time to wait for response in milliseconds"
+                      },
+                      "supported_macros": {
+                        "type": "array",
+                        "items": {
+                          "oneOf": [
+                            {
+                              "title": "Universal Macro",
+                              "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                              "type": "string",
+                              "enum": [
+                                "MEDIA_BUY_ID",
+                                "PACKAGE_ID",
+                                "CREATIVE_ID",
+                                "CACHEBUSTER",
+                                "TIMESTAMP",
+                                "CLICK_URL",
+                                "GDPR",
+                                "GDPR_CONSENT",
+                                "US_PRIVACY",
+                                "GPP_STRING",
+                                "GPP_SID",
+                                "IP_ADDRESS",
+                                "LIMIT_AD_TRACKING",
+                                "DEVICE_TYPE",
+                                "OS",
+                                "OS_VERSION",
+                                "DEVICE_MAKE",
+                                "DEVICE_MODEL",
+                                "USER_AGENT",
+                                "APP_BUNDLE",
+                                "APP_NAME",
+                                "COUNTRY",
+                                "REGION",
+                                "CITY",
+                                "ZIP",
+                                "DMA",
+                                "LAT",
+                                "LONG",
+                                "DEVICE_ID",
+                                "DEVICE_ID_TYPE",
+                                "DOMAIN",
+                                "PAGE_URL",
+                                "REFERRER",
+                                "KEYWORDS",
+                                "PLACEMENT_ID",
+                                "FOLD_POSITION",
+                                "AD_WIDTH",
+                                "AD_HEIGHT",
+                                "VIDEO_ID",
+                                "VIDEO_TITLE",
+                                "VIDEO_DURATION",
+                                "VIDEO_CATEGORY",
+                                "CONTENT_GENRE",
+                                "CONTENT_RATING",
+                                "PLAYER_WIDTH",
+                                "PLAYER_HEIGHT",
+                                "POD_POSITION",
+                                "POD_SIZE",
+                                "AD_BREAK_ID",
+                                "STATION_ID",
+                                "COLLECTION_NAME",
+                                "INSTALLMENT_ID",
+                                "AUDIO_DURATION",
+                                "TMPX",
+                                "AXEM",
+                                "CATALOG_ID",
+                                "SKU",
+                                "GTIN",
+                                "OFFERING_ID",
+                                "JOB_ID",
+                                "HOTEL_ID",
+                                "FLIGHT_ID",
+                                "VEHICLE_ID",
+                                "LISTING_ID",
+                                "STORE_ID",
+                                "PROGRAM_ID",
+                                "DESTINATION_ID",
+                                "CREATIVE_VARIANT_ID",
+                                "APP_ITEM_ID"
+                              ],
+                              "enumDescriptions": {
+                                "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                "PACKAGE_ID": "AdCP package identifier",
+                                "CREATIVE_ID": "AdCP creative identifier",
+                                "CACHEBUSTER": "Random number to prevent caching",
+                                "TIMESTAMP": "Unix timestamp in milliseconds",
+                                "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                "US_PRIVACY": "US Privacy (CCPA) string",
+                                "GPP_STRING": "Global Privacy Platform consent string",
+                                "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                "OS_VERSION": "OS version number",
+                                "DEVICE_MAKE": "Device manufacturer",
+                                "DEVICE_MODEL": "Device model identifier",
+                                "USER_AGENT": "Full user agent string",
+                                "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                "APP_NAME": "Human-readable app name",
+                                "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                "REGION": "State/province/region code",
+                                "CITY": "City name",
+                                "ZIP": "Postal code",
+                                "DMA": "Nielsen DMA code (US TV markets)",
+                                "LAT": "Latitude coordinate",
+                                "LONG": "Longitude coordinate",
+                                "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                "DOMAIN": "Domain where ad is shown",
+                                "PAGE_URL": "Full page URL (encoded)",
+                                "REFERRER": "HTTP referrer URL",
+                                "KEYWORDS": "Page keywords (comma-separated)",
+                                "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                "AD_WIDTH": "Ad slot width in pixels",
+                                "AD_HEIGHT": "Ad slot height in pixels",
+                                "VIDEO_ID": "Content video identifier",
+                                "VIDEO_TITLE": "Content video title",
+                                "VIDEO_DURATION": "Content duration in seconds",
+                                "VIDEO_CATEGORY": "IAB content category",
+                                "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                "PLAYER_WIDTH": "Video player width in pixels",
+                                "PLAYER_HEIGHT": "Video player height in pixels",
+                                "POD_POSITION": "Position within ad break",
+                                "POD_SIZE": "Total ads in the ad break",
+                                "AD_BREAK_ID": "Unique ad break identifier",
+                                "STATION_ID": "Radio station or podcast identifier",
+                                "COLLECTION_NAME": "Program or collection name",
+                                "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                "AUDIO_DURATION": "Audio content duration in seconds",
+                                "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                "SKU": "Product SKU identifier for the catalog item being rendered",
+                                "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                              }
+                            },
+                            {
+                              "type": "string",
+                              "description": "Custom or publisher-specific macro name"
+                            }
+                          ]
+                        },
+                        "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                      },
+                      "required_macros": {
+                        "type": "array",
+                        "items": {
+                          "oneOf": [
+                            {
+                              "title": "Universal Macro",
+                              "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                              "type": "string",
+                              "enum": [
+                                "MEDIA_BUY_ID",
+                                "PACKAGE_ID",
+                                "CREATIVE_ID",
+                                "CACHEBUSTER",
+                                "TIMESTAMP",
+                                "CLICK_URL",
+                                "GDPR",
+                                "GDPR_CONSENT",
+                                "US_PRIVACY",
+                                "GPP_STRING",
+                                "GPP_SID",
+                                "IP_ADDRESS",
+                                "LIMIT_AD_TRACKING",
+                                "DEVICE_TYPE",
+                                "OS",
+                                "OS_VERSION",
+                                "DEVICE_MAKE",
+                                "DEVICE_MODEL",
+                                "USER_AGENT",
+                                "APP_BUNDLE",
+                                "APP_NAME",
+                                "COUNTRY",
+                                "REGION",
+                                "CITY",
+                                "ZIP",
+                                "DMA",
+                                "LAT",
+                                "LONG",
+                                "DEVICE_ID",
+                                "DEVICE_ID_TYPE",
+                                "DOMAIN",
+                                "PAGE_URL",
+                                "REFERRER",
+                                "KEYWORDS",
+                                "PLACEMENT_ID",
+                                "FOLD_POSITION",
+                                "AD_WIDTH",
+                                "AD_HEIGHT",
+                                "VIDEO_ID",
+                                "VIDEO_TITLE",
+                                "VIDEO_DURATION",
+                                "VIDEO_CATEGORY",
+                                "CONTENT_GENRE",
+                                "CONTENT_RATING",
+                                "PLAYER_WIDTH",
+                                "PLAYER_HEIGHT",
+                                "POD_POSITION",
+                                "POD_SIZE",
+                                "AD_BREAK_ID",
+                                "STATION_ID",
+                                "COLLECTION_NAME",
+                                "INSTALLMENT_ID",
+                                "AUDIO_DURATION",
+                                "TMPX",
+                                "AXEM",
+                                "CATALOG_ID",
+                                "SKU",
+                                "GTIN",
+                                "OFFERING_ID",
+                                "JOB_ID",
+                                "HOTEL_ID",
+                                "FLIGHT_ID",
+                                "VEHICLE_ID",
+                                "LISTING_ID",
+                                "STORE_ID",
+                                "PROGRAM_ID",
+                                "DESTINATION_ID",
+                                "CREATIVE_VARIANT_ID",
+                                "APP_ITEM_ID"
+                              ],
+                              "enumDescriptions": {
+                                "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                "PACKAGE_ID": "AdCP package identifier",
+                                "CREATIVE_ID": "AdCP creative identifier",
+                                "CACHEBUSTER": "Random number to prevent caching",
+                                "TIMESTAMP": "Unix timestamp in milliseconds",
+                                "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                "US_PRIVACY": "US Privacy (CCPA) string",
+                                "GPP_STRING": "Global Privacy Platform consent string",
+                                "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                "OS_VERSION": "OS version number",
+                                "DEVICE_MAKE": "Device manufacturer",
+                                "DEVICE_MODEL": "Device model identifier",
+                                "USER_AGENT": "Full user agent string",
+                                "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                "APP_NAME": "Human-readable app name",
+                                "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                "REGION": "State/province/region code",
+                                "CITY": "City name",
+                                "ZIP": "Postal code",
+                                "DMA": "Nielsen DMA code (US TV markets)",
+                                "LAT": "Latitude coordinate",
+                                "LONG": "Longitude coordinate",
+                                "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                "DOMAIN": "Domain where ad is shown",
+                                "PAGE_URL": "Full page URL (encoded)",
+                                "REFERRER": "HTTP referrer URL",
+                                "KEYWORDS": "Page keywords (comma-separated)",
+                                "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                "AD_WIDTH": "Ad slot width in pixels",
+                                "AD_HEIGHT": "Ad slot height in pixels",
+                                "VIDEO_ID": "Content video identifier",
+                                "VIDEO_TITLE": "Content video title",
+                                "VIDEO_DURATION": "Content duration in seconds",
+                                "VIDEO_CATEGORY": "IAB content category",
+                                "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                "PLAYER_WIDTH": "Video player width in pixels",
+                                "PLAYER_HEIGHT": "Video player height in pixels",
+                                "POD_POSITION": "Position within ad break",
+                                "POD_SIZE": "Total ads in the ad break",
+                                "AD_BREAK_ID": "Unique ad break identifier",
+                                "STATION_ID": "Radio station or podcast identifier",
+                                "COLLECTION_NAME": "Program or collection name",
+                                "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                "AUDIO_DURATION": "Audio content duration in seconds",
+                                "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                "SKU": "Product SKU identifier for the catalog item being rendered",
+                                "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                              }
+                            },
+                            {
+                              "type": "string",
+                              "description": "Custom or publisher-specific macro name"
+                            }
+                          ]
+                        },
+                        "description": "Universal macros that must be provided for webhook to function"
+                      },
+                      "response_type": {
+                        "title": "Webhook Response Type",
+                        "description": "Expected content type of webhook response",
+                        "type": "string",
+                        "enum": [
+                          "html",
+                          "json",
+                          "xml",
+                          "javascript"
+                        ]
+                      },
+                      "security": {
+                        "type": "object",
+                        "description": "Security configuration for webhook calls",
+                        "properties": {
+                          "method": {
+                            "title": "Webhook Security Method",
+                            "description": "Authentication method",
+                            "type": "string",
+                            "enum": [
+                              "hmac_sha256",
+                              "api_key",
+                              "none"
+                            ]
+                          },
+                          "hmac_header": {
+                            "type": "string",
+                            "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                          },
+                          "api_key_header": {
+                            "type": "string",
+                            "description": "Header name for API key (e.g., 'X-API-Key')"
+                          }
+                        },
+                        "required": [
+                          "method"
+                        ]
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "url",
+                      "response_type",
+                      "security"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "CSS Asset",
+                    "description": "CSS stylesheet asset",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "CSS content"
+                      },
+                      "media": {
+                        "type": "string",
+                        "description": "CSS media query context (e.g., 'screen', 'print')"
+                      },
+                      "provenance": {
+                        "title": "Provenance",
+                        "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                        "type": "object",
+                        "properties": {
+                          "digital_source_type": {
+                            "title": "Digital Source Type",
+                            "description": "IPTC-aligned classification of AI involvement in producing this content",
+                            "type": "string",
+                            "enum": [
+                              "digital_capture",
+                              "digital_creation",
+                              "trained_algorithmic_media",
+                              "composite_with_trained_algorithmic_media",
+                              "algorithmic_media",
+                              "composite_capture",
+                              "composite_synthetic",
+                              "human_edits",
+                              "data_driven_media"
+                            ],
+                            "enumDescriptions": {
+                              "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                              "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                              "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                              "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                              "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                              "composite_capture": "Multiple digital captures composited together without AI",
+                              "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                              "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                              "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                            }
+                          },
+                          "ai_tool": {
+                            "type": "object",
+                            "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                            "properties": {
+                              "name": {
+                                "type": "string",
+                                "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                              },
+                              "version": {
+                                "type": "string",
+                                "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                              },
+                              "provider": {
+                                "type": "string",
+                                "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                              }
+                            },
+                            "required": [
+                              "name"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "human_oversight": {
+                            "type": "string",
+                            "description": "Level of human involvement in the AI-assisted creation process",
+                            "enum": [
+                              "none",
+                              "prompt_only",
+                              "selected",
+                              "edited",
+                              "directed"
+                            ],
+                            "enumDescriptions": {
+                              "none": "Fully automated with no human involvement in generation",
+                              "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                              "selected": "Human selected from multiple AI-generated candidates",
+                              "edited": "Human edited or refined AI-generated output",
+                              "directed": "Human directed the creative process with AI as an assistive tool"
+                            }
+                          },
+                          "declared_by": {
+                            "type": "object",
+                            "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                            "properties": {
+                              "agent_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL of the agent or service that declared this provenance"
+                              },
+                              "role": {
+                                "type": "string",
+                                "enum": [
+                                  "creator",
+                                  "advertiser",
+                                  "agency",
+                                  "platform",
+                                  "tool"
+                                ],
+                                "description": "Role of the declaring party in the supply chain",
+                                "enumDescriptions": {
+                                  "creator": "The party that created or generated the content",
+                                  "advertiser": "The brand or advertiser that owns the content",
+                                  "agency": "Agency acting on behalf of the advertiser",
+                                  "platform": "Ad platform or publisher that processed the content",
+                                  "tool": "Automated tool or service that attached provenance metadata"
+                                }
+                              }
+                            },
+                            "required": [
+                              "role"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "declared_at": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                          },
+                          "created_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When this content was created or generated (ISO 8601)"
+                          },
+                          "c2pa": {
+                            "type": "object",
+                            "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                            "properties": {
+                              "manifest_url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL to the C2PA manifest store for this content"
+                              }
+                            },
+                            "required": [
+                              "manifest_url"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "disclosure": {
+                            "type": "object",
+                            "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                            "properties": {
+                              "required": {
+                                "type": "boolean",
+                                "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                              },
+                              "jurisdictions": {
+                                "type": "array",
+                                "description": "Jurisdictions where disclosure obligations apply",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "country": {
+                                      "type": "string",
+                                      "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                    },
+                                    "region": {
+                                      "type": "string",
+                                      "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                    },
+                                    "label_text": {
+                                      "type": "string",
+                                      "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                    },
+                                    "render_guidance": {
+                                      "type": "object",
+                                      "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                      "minProperties": 1,
+                                      "properties": {
+                                        "persistence": {
+                                          "title": "Disclosure Persistence",
+                                          "description": "How long the disclosure must persist during content playback or display",
+                                          "type": "string",
+                                          "enum": [
+                                            "continuous",
+                                            "initial",
+                                            "flexible"
+                                          ],
+                                          "enumDescriptions": {
+                                            "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                            "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                            "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                          }
+                                        },
+                                        "min_duration_ms": {
+                                          "type": "integer",
+                                          "minimum": 1,
+                                          "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                        },
+                                        "positions": {
+                                          "type": "array",
+                                          "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                          "items": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "minItems": 1,
+                                          "uniqueItems": true
+                                        },
+                                        "ext": {
+                                          "title": "Extension Object",
+                                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                          "type": "object",
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "required": [
+                                    "country",
+                                    "regulation"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "required": [
+                              "required"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "verification": {
+                            "type": "array",
+                            "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                            "minItems": 1,
+                            "items": {
+                              "type": "object",
+                              "properties": {
+                                "verified_by": {
+                                  "type": "string",
+                                  "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                },
+                                "verified_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When the verification was performed (ISO 8601)"
+                                },
+                                "result": {
+                                  "type": "string",
+                                  "enum": [
+                                    "authentic",
+                                    "ai_generated",
+                                    "ai_modified",
+                                    "inconclusive"
+                                  ],
+                                  "description": "Verification outcome"
+                                },
+                                "confidence": {
+                                  "type": "number",
+                                  "minimum": 0,
+                                  "maximum": 1,
+                                  "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                },
+                                "details_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the full verification report"
+                                }
+                              },
+                              "required": [
+                                "verified_by",
+                                "result"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "DAAST Asset",
+                    "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "url",
+                            "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL endpoint that returns DAAST XML"
+                          },
+                          "daast_version": {
+                            "title": "DAAST Version",
+                            "description": "DAAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "1.0",
+                              "1.1"
+                            ]
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected audio duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "DAAST Tracking Event",
+                              "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "skip",
+                                "progress",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this DAAST tag"
+                          },
+                          "companion_ads": {
+                            "type": "boolean",
+                            "description": "Whether companion display ads are included"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "url"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "type": "object",
+                        "properties": {
+                          "delivery_type": {
+                            "type": "string",
+                            "const": "inline",
+                            "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                          },
+                          "content": {
+                            "type": "string",
+                            "description": "Inline DAAST XML content"
+                          },
+                          "daast_version": {
+                            "title": "DAAST Version",
+                            "description": "DAAST specification version",
+                            "type": "string",
+                            "enum": [
+                              "1.0",
+                              "1.1"
+                            ]
+                          },
+                          "duration_ms": {
+                            "type": "integer",
+                            "description": "Expected audio duration in milliseconds (if known)",
+                            "minimum": 0
+                          },
+                          "tracking_events": {
+                            "type": "array",
+                            "items": {
+                              "title": "DAAST Tracking Event",
+                              "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                              "type": "string",
+                              "enum": [
+                                "impression",
+                                "creativeView",
+                                "loaded",
+                                "start",
+                                "firstQuartile",
+                                "midpoint",
+                                "thirdQuartile",
+                                "complete",
+                                "mute",
+                                "unmute",
+                                "pause",
+                                "resume",
+                                "skip",
+                                "progress",
+                                "clickTracking",
+                                "customClick",
+                                "close",
+                                "error",
+                                "viewable",
+                                "notViewable",
+                                "viewUndetermined",
+                                "measurableImpression",
+                                "viewableImpression"
+                              ]
+                            },
+                            "description": "Tracking events supported by this DAAST tag"
+                          },
+                          "companion_ads": {
+                            "type": "boolean",
+                            "description": "Whether companion display ads are included"
+                          },
+                          "transcript_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to text transcript of the audio content",
+                            "x-accessibility": true
+                          },
+                          "provenance": {
+                            "title": "Provenance",
+                            "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                            "type": "object",
+                            "properties": {
+                              "digital_source_type": {
+                                "title": "Digital Source Type",
+                                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                "type": "string",
+                                "enum": [
+                                  "digital_capture",
+                                  "digital_creation",
+                                  "trained_algorithmic_media",
+                                  "composite_with_trained_algorithmic_media",
+                                  "algorithmic_media",
+                                  "composite_capture",
+                                  "composite_synthetic",
+                                  "human_edits",
+                                  "data_driven_media"
+                                ],
+                                "enumDescriptions": {
+                                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                  "composite_capture": "Multiple digital captures composited together without AI",
+                                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                }
+                              },
+                              "ai_tool": {
+                                "type": "object",
+                                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                "properties": {
+                                  "name": {
+                                    "type": "string",
+                                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                  },
+                                  "version": {
+                                    "type": "string",
+                                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                  },
+                                  "provider": {
+                                    "type": "string",
+                                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                  }
+                                },
+                                "required": [
+                                  "name"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "human_oversight": {
+                                "type": "string",
+                                "description": "Level of human involvement in the AI-assisted creation process",
+                                "enum": [
+                                  "none",
+                                  "prompt_only",
+                                  "selected",
+                                  "edited",
+                                  "directed"
+                                ],
+                                "enumDescriptions": {
+                                  "none": "Fully automated with no human involvement in generation",
+                                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                  "selected": "Human selected from multiple AI-generated candidates",
+                                  "edited": "Human edited or refined AI-generated output",
+                                  "directed": "Human directed the creative process with AI as an assistive tool"
+                                }
+                              },
+                              "declared_by": {
+                                "type": "object",
+                                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                "properties": {
+                                  "agent_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL of the agent or service that declared this provenance"
+                                  },
+                                  "role": {
+                                    "type": "string",
+                                    "enum": [
+                                      "creator",
+                                      "advertiser",
+                                      "agency",
+                                      "platform",
+                                      "tool"
+                                    ],
+                                    "description": "Role of the declaring party in the supply chain",
+                                    "enumDescriptions": {
+                                      "creator": "The party that created or generated the content",
+                                      "advertiser": "The brand or advertiser that owns the content",
+                                      "agency": "Agency acting on behalf of the advertiser",
+                                      "platform": "Ad platform or publisher that processed the content",
+                                      "tool": "Automated tool or service that attached provenance metadata"
+                                    }
+                                  }
+                                },
+                                "required": [
+                                  "role"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "declared_at": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                              },
+                              "created_time": {
+                                "type": "string",
+                                "format": "date-time",
+                                "description": "When this content was created or generated (ISO 8601)"
+                              },
+                              "c2pa": {
+                                "type": "object",
+                                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                "properties": {
+                                  "manifest_url": {
+                                    "type": "string",
+                                    "format": "uri",
+                                    "description": "URL to the C2PA manifest store for this content"
+                                  }
+                                },
+                                "required": [
+                                  "manifest_url"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "disclosure": {
+                                "type": "object",
+                                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                "properties": {
+                                  "required": {
+                                    "type": "boolean",
+                                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                  },
+                                  "jurisdictions": {
+                                    "type": "array",
+                                    "description": "Jurisdictions where disclosure obligations apply",
+                                    "items": {
+                                      "type": "object",
+                                      "properties": {
+                                        "country": {
+                                          "type": "string",
+                                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                        },
+                                        "region": {
+                                          "type": "string",
+                                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                        },
+                                        "regulation": {
+                                          "type": "string",
+                                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                        },
+                                        "label_text": {
+                                          "type": "string",
+                                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                        },
+                                        "render_guidance": {
+                                          "type": "object",
+                                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                          "minProperties": 1,
+                                          "properties": {
+                                            "persistence": {
+                                              "title": "Disclosure Persistence",
+                                              "description": "How long the disclosure must persist during content playback or display",
+                                              "type": "string",
+                                              "enum": [
+                                                "continuous",
+                                                "initial",
+                                                "flexible"
+                                              ],
+                                              "enumDescriptions": {
+                                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                              }
+                                            },
+                                            "min_duration_ms": {
+                                              "type": "integer",
+                                              "minimum": 1,
+                                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                            },
+                                            "positions": {
+                                              "type": "array",
+                                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                              "items": {
+                                                "title": "Disclosure Position",
+                                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                "type": "string",
+                                                "enum": [
+                                                  "prominent",
+                                                  "footer",
+                                                  "audio",
+                                                  "subtitle",
+                                                  "overlay",
+                                                  "end_card",
+                                                  "pre_roll",
+                                                  "companion"
+                                                ]
+                                              },
+                                              "minItems": 1,
+                                              "uniqueItems": true
+                                            },
+                                            "ext": {
+                                              "title": "Extension Object",
+                                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                              "type": "object",
+                                              "additionalProperties": true
+                                            }
+                                          },
+                                          "additionalProperties": true
+                                        }
+                                      },
+                                      "required": [
+                                        "country",
+                                        "regulation"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "minItems": 1
+                                  }
+                                },
+                                "required": [
+                                  "required"
+                                ],
+                                "additionalProperties": true
+                              },
+                              "verification": {
+                                "type": "array",
+                                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                "minItems": 1,
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "verified_by": {
+                                      "type": "string",
+                                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                    },
+                                    "verified_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When the verification was performed (ISO 8601)"
+                                    },
+                                    "result": {
+                                      "type": "string",
+                                      "enum": [
+                                        "authentic",
+                                        "ai_generated",
+                                        "ai_modified",
+                                        "inconclusive"
+                                      ],
+                                      "description": "Verification outcome"
+                                    },
+                                    "confidence": {
+                                      "type": "number",
+                                      "minimum": 0,
+                                      "maximum": 1,
+                                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                    },
+                                    "details_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the full verification report"
+                                    }
+                                  },
+                                  "required": [
+                                    "verified_by",
+                                    "result"
+                                  ],
+                                  "additionalProperties": true
+                                }
+                              },
+                              "ext": {
+                                "title": "Extension Object",
+                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                "type": "object",
+                                "additionalProperties": true
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "delivery_type",
+                          "content"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Markdown Asset",
+                    "description": "Markdown-formatted text content following CommonMark specification",
+                    "type": "object",
+                    "properties": {
+                      "content": {
+                        "type": "string",
+                        "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                      },
+                      "language": {
+                        "type": "string",
+                        "description": "Language code (e.g., 'en', 'es', 'fr')"
+                      },
+                      "markdown_flavor": {
+                        "title": "Markdown Flavor",
+                        "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                        "type": "string",
+                        "enum": [
+                          "commonmark",
+                          "gfm"
+                        ],
+                        "default": "commonmark"
+                      },
+                      "allow_raw_html": {
+                        "type": "boolean",
+                        "default": false,
+                        "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                      }
+                    },
+                    "required": [
+                      "content"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "Brief Asset",
+                    "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                    "allOf": [
+                      {
+                        "title": "Creative Brief",
+                        "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                        "type": "object",
+                        "properties": {
+                          "name": {
+                            "type": "string",
+                            "description": "Campaign or flight name for identification"
+                          },
+                          "objective": {
+                            "type": "string",
+                            "enum": [
+                              "awareness",
+                              "consideration",
+                              "conversion",
+                              "retention",
+                              "engagement"
+                            ],
+                            "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                          },
+                          "tone": {
+                            "type": "string",
+                            "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                          },
+                          "audience": {
+                            "type": "string",
+                            "description": "Target audience description for this campaign"
+                          },
+                          "territory": {
+                            "type": "string",
+                            "description": "Creative territory or positioning the campaign should occupy"
+                          },
+                          "messaging": {
+                            "type": "object",
+                            "description": "Messaging framework for the campaign",
+                            "properties": {
+                              "headline": {
+                                "type": "string",
+                                "description": "Primary headline"
+                              },
+                              "tagline": {
+                                "type": "string",
+                                "description": "Supporting tagline or sub-headline"
+                              },
+                              "cta": {
+                                "type": "string",
+                                "description": "Call-to-action text"
+                              },
+                              "key_messages": {
+                                "type": "array",
+                                "description": "Key messages to communicate in priority order",
+                                "items": {
+                                  "type": "string"
+                                }
+                              }
+                            },
+                            "additionalProperties": true
+                          },
+                          "reference_assets": {
+                            "type": "array",
+                            "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                            "items": {
+                              "title": "Reference Asset",
+                              "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                              "type": "object",
+                              "properties": {
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to the reference asset (image, video, or document)"
+                                },
+                                "role": {
+                                  "type": "string",
+                                  "enum": [
+                                    "style_reference",
+                                    "product_shot",
+                                    "mood_board",
+                                    "example_creative",
+                                    "logo",
+                                    "strategy_doc",
+                                    "storyboard"
+                                  ],
+                                  "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                },
+                                "description": {
+                                  "type": "string",
+                                  "description": "Human-readable description of the asset and how it should inform creative generation"
+                                }
+                              },
+                              "required": [
+                                "url",
+                                "role"
+                              ],
+                              "additionalProperties": true
+                            }
+                          },
+                          "compliance": {
+                            "type": "object",
+                            "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                            "properties": {
+                              "required_disclosures": {
+                                "type": "array",
+                                "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "text": {
+                                      "type": "string",
+                                      "description": "The disclosure text that must appear in the creative"
+                                    },
+                                    "position": {
+                                      "title": "Disclosure Position",
+                                      "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                      "type": "string",
+                                      "enum": [
+                                        "prominent",
+                                        "footer",
+                                        "audio",
+                                        "subtitle",
+                                        "overlay",
+                                        "end_card",
+                                        "pre_roll",
+                                        "companion"
+                                      ]
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                      "items": {
+                                        "type": "string",
+                                        "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                      },
+                                      "minItems": 1
+                                    },
+                                    "regulation": {
+                                      "type": "string",
+                                      "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                    },
+                                    "min_duration_ms": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                    },
+                                    "language": {
+                                      "type": "string",
+                                      "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                    },
+                                    "persistence": {
+                                      "title": "Disclosure Persistence",
+                                      "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                      "type": "string",
+                                      "enum": [
+                                        "continuous",
+                                        "initial",
+                                        "flexible"
+                                      ],
+                                      "enumDescriptions": {
+                                        "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                        "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                        "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "text"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "minItems": 1
+                              },
+                              "prohibited_claims": {
+                                "type": "array",
+                                "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                "items": {
+                                  "type": "string"
+                                },
+                                "minItems": 1
+                              }
+                            },
+                            "additionalProperties": true
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  {
+                    "title": "Catalog Asset",
+                    "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                    "allOf": [
+                      {
+                        "title": "Catalog",
+                        "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                        "type": "object",
+                        "properties": {
+                          "catalog_id": {
+                            "type": "string",
+                            "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                          },
+                          "name": {
+                            "type": "string",
+                            "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                          },
+                          "type": {
+                            "title": "Catalog Type",
+                            "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                            "type": "string",
+                            "enum": [
+                              "offering",
+                              "product",
+                              "inventory",
+                              "store",
+                              "promotion",
+                              "hotel",
+                              "flight",
+                              "job",
+                              "vehicle",
+                              "real_estate",
+                              "education",
+                              "destination",
+                              "app"
+                            ]
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                          },
+                          "feed_format": {
+                            "title": "Feed Format",
+                            "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                            "type": "string",
+                            "enum": [
+                              "google_merchant_center",
+                              "facebook_catalog",
+                              "shopify",
+                              "linkedin_jobs",
+                              "custom"
+                            ]
+                          },
+                          "update_frequency": {
+                            "title": "Update Frequency",
+                            "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                            "type": "string",
+                            "enum": [
+                              "realtime",
+                              "hourly",
+                              "daily",
+                              "weekly"
+                            ]
+                          },
+                          "items": {
+                            "type": "array",
+                            "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                            "items": {
+                              "type": "object"
+                            },
+                            "minItems": 1
+                          },
+                          "ids": {
+                            "type": "array",
+                            "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                            "items": {
+                              "type": "string"
+                            },
+                            "minItems": 1
+                          },
+                          "gtins": {
+                            "type": "array",
+                            "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                            "items": {
+                              "type": "string",
+                              "pattern": "^[0-9]{8,14}$"
+                            },
+                            "minItems": 1
+                          },
+                          "tags": {
+                            "type": "array",
+                            "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                            "items": {
+                              "type": "string"
+                            },
+                            "minItems": 1
+                          },
+                          "category": {
+                            "type": "string",
+                            "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                          },
+                          "query": {
+                            "type": "string",
+                            "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                          },
+                          "conversion_events": {
+                            "type": "array",
+                            "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                            "items": {
+                              "title": "Event Type",
+                              "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                              "type": "string",
+                              "enum": [
+                                "page_view",
+                                "view_content",
+                                "select_content",
+                                "select_item",
+                                "search",
+                                "share",
+                                "add_to_cart",
+                                "remove_from_cart",
+                                "viewed_cart",
+                                "add_to_wishlist",
+                                "initiate_checkout",
+                                "add_payment_info",
+                                "purchase",
+                                "refund",
+                                "lead",
+                                "qualify_lead",
+                                "close_convert_lead",
+                                "disqualify_lead",
+                                "complete_registration",
+                                "subscribe",
+                                "start_trial",
+                                "app_install",
+                                "app_launch",
+                                "contact",
+                                "schedule",
+                                "donate",
+                                "submit_application",
+                                "custom"
+                              ],
+                              "enumDescriptions": {
+                                "page_view": "User viewed a page",
+                                "view_content": "User viewed specific content (product, article, etc.)",
+                                "select_content": "User selected or clicked on content (article, video, etc.)",
+                                "select_item": "User selected a specific product or item from a list",
+                                "search": "User performed a search",
+                                "share": "User shared content via social or messaging",
+                                "add_to_cart": "User added an item to cart",
+                                "remove_from_cart": "User removed an item from cart",
+                                "viewed_cart": "User viewed their shopping cart",
+                                "add_to_wishlist": "User added an item to a wishlist",
+                                "initiate_checkout": "User started checkout process",
+                                "add_payment_info": "User added payment information",
+                                "purchase": "User completed a purchase",
+                                "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                "lead": "User expressed interest (form submission, signup, etc.)",
+                                "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                "close_convert_lead": "Lead converted to a customer or closed deal",
+                                "disqualify_lead": "Lead disqualified or marked as not viable",
+                                "complete_registration": "User completed account registration",
+                                "subscribe": "User subscribed to a service or newsletter",
+                                "start_trial": "User started a free trial",
+                                "app_install": "User installed an application",
+                                "app_launch": "User launched an application",
+                                "contact": "User initiated contact (call, message, etc.)",
+                                "schedule": "User scheduled an appointment or event",
+                                "donate": "User made a donation",
+                                "submit_application": "User submitted an application (loan, job, etc.)",
+                                "custom": "Custom event type (specify in custom_event_name)"
+                              }
+                            },
+                            "minItems": 1,
+                            "uniqueItems": true
+                          },
+                          "content_id_type": {
+                            "title": "Content ID Type",
+                            "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                            "type": "string",
+                            "enum": [
+                              "sku",
+                              "gtin",
+                              "offering_id",
+                              "job_id",
+                              "hotel_id",
+                              "flight_id",
+                              "vehicle_id",
+                              "listing_id",
+                              "store_id",
+                              "program_id",
+                              "destination_id",
+                              "app_id"
+                            ]
+                          },
+                          "feed_field_mappings": {
+                            "type": "array",
+                            "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                            "items": {
+                              "title": "Catalog Field Mapping",
+                              "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                              "type": "object",
+                              "properties": {
+                                "feed_field": {
+                                  "type": "string",
+                                  "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                },
+                                "catalog_field": {
+                                  "type": "string",
+                                  "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                },
+                                "asset_group_id": {
+                                  "type": "string",
+                                  "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                },
+                                "value": {
+                                  "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                },
+                                "transform": {
+                                  "type": "string",
+                                  "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                  "enum": [
+                                    "date",
+                                    "divide",
+                                    "boolean",
+                                    "split"
+                                  ]
+                                },
+                                "format": {
+                                  "type": "string",
+                                  "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                },
+                                "timezone": {
+                                  "type": "string",
+                                  "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                },
+                                "by": {
+                                  "type": "number",
+                                  "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                  "exclusiveMinimum": 0
+                                },
+                                "separator": {
+                                  "type": "string",
+                                  "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                  "default": ","
+                                },
+                                "default": {
+                                  "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "allOf": [
+                                {
+                                  "not": {
+                                    "required": [
+                                      "feed_field",
+                                      "value"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "not": {
+                                    "required": [
+                                      "catalog_field",
+                                      "asset_group_id"
+                                    ]
+                                  }
+                                }
+                              ],
+                              "additionalProperties": true,
+                              "examples": [
+                                {
+                                  "description": "Simple field rename",
+                                  "data": {
+                                    "feed_field": "hotel_name",
+                                    "catalog_field": "name"
+                                  }
+                                },
+                                {
+                                  "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                  "data": {
+                                    "feed_field": "available_from",
+                                    "catalog_field": "valid_from",
+                                    "transform": "date",
+                                    "format": "YYYYMMDD",
+                                    "timezone": "UTC"
+                                  }
+                                },
+                                {
+                                  "description": "Divide cents to dollars",
+                                  "data": {
+                                    "feed_field": "price_cents",
+                                    "catalog_field": "price.amount",
+                                    "transform": "divide",
+                                    "by": 100
+                                  }
+                                },
+                                {
+                                  "description": "Static literal injection \u2014 currency not in feed",
+                                  "data": {
+                                    "catalog_field": "price.currency",
+                                    "value": "USD"
+                                  }
+                                },
+                                {
+                                  "description": "Image URL assigned to typed asset pool",
+                                  "data": {
+                                    "feed_field": "primary_photo_url",
+                                    "asset_group_id": "images_landscape"
+                                  }
+                                },
+                                {
+                                  "description": "Vertical photo URL assigned to vertical pool",
+                                  "data": {
+                                    "feed_field": "portrait_photo_url",
+                                    "asset_group_id": "images_vertical"
+                                  }
+                                },
+                                {
+                                  "description": "Split comma-separated tags to array",
+                                  "data": {
+                                    "feed_field": "amenity_list",
+                                    "catalog_field": "amenities",
+                                    "transform": "split",
+                                    "separator": ","
+                                  }
+                                },
+                                {
+                                  "description": "Boolean coercion with default",
+                                  "data": {
+                                    "feed_field": "is_available",
+                                    "catalog_field": "available",
+                                    "transform": "boolean",
+                                    "default": false
+                                  }
+                                }
+                              ]
+                            },
+                            "minItems": 1
+                          }
+                        },
+                        "required": [
+                          "type"
+                        ],
+                        "additionalProperties": true,
+                        "examples": [
+                          {
+                            "description": "Synced product catalog from Google Merchant Center",
+                            "data": {
+                              "catalog_id": "gmc-primary",
+                              "name": "Primary Product Feed",
+                              "type": "product",
+                              "url": "https://feeds.acmecorp.com/products.xml",
+                              "feed_format": "google_merchant_center",
+                              "update_frequency": "daily"
+                            }
+                          },
+                          {
+                            "description": "Inventory feed for store-level stock data",
+                            "data": {
+                              "catalog_id": "store-inventory",
+                              "name": "Store Inventory",
+                              "type": "inventory",
+                              "url": "https://feeds.acmecorp.com/inventory.json",
+                              "feed_format": "custom",
+                              "update_frequency": "hourly"
+                            }
+                          },
+                          {
+                            "description": "Store locator feed",
+                            "data": {
+                              "catalog_id": "retail-locations",
+                              "name": "Retail Locations",
+                              "type": "store",
+                              "url": "https://feeds.acmecorp.com/stores.json",
+                              "feed_format": "custom",
+                              "update_frequency": "weekly"
+                            }
+                          },
+                          {
+                            "description": "Promotional pricing feed",
+                            "data": {
+                              "catalog_id": "summer-sale",
+                              "name": "Summer Sale Promotions",
+                              "type": "promotion",
+                              "url": "https://feeds.acmecorp.com/promotions.json",
+                              "feed_format": "google_merchant_center",
+                              "update_frequency": "daily"
+                            }
+                          },
+                          {
+                            "description": "Inline offering catalog (no sync needed)",
+                            "data": {
+                              "type": "offering",
+                              "items": [
+                                {
+                                  "offering_id": "summer-sale",
+                                  "name": "Summer Sale",
+                                  "landing_url": "https://acme.com/summer"
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Reference to a previously synced catalog by ID",
+                            "data": {
+                              "catalog_id": "gmc-primary",
+                              "type": "product",
+                              "ids": [
+                                "SKU-12345",
+                                "SKU-67890"
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                            "data": {
+                              "type": "product",
+                              "gtins": [
+                                "00013000006040",
+                                "00013000006057"
+                              ],
+                              "content_id_type": "gtin",
+                              "conversion_events": [
+                                "purchase",
+                                "add_to_cart"
+                              ]
+                            }
+                          },
+                          {
+                            "description": "Inline store catalog with catchment areas",
+                            "data": {
+                              "catalog_id": "retail-locations",
+                              "name": "Retail Locations",
+                              "type": "store",
+                              "items": [
+                                {
+                                  "store_id": "amsterdam-flagship",
+                                  "name": "Amsterdam Flagship",
+                                  "location": {
+                                    "lat": 52.3676,
+                                    "lng": 4.9041
+                                  },
+                                  "catchments": [
+                                    {
+                                      "catchment_id": "walk",
+                                      "travel_time": {
+                                        "value": 10,
+                                        "unit": "min"
+                                      },
+                                      "transport_mode": "walking"
+                                    },
+                                    {
+                                      "catchment_id": "drive",
+                                      "travel_time": {
+                                        "value": 15,
+                                        "unit": "min"
+                                      },
+                                      "transport_mode": "driving"
+                                    }
+                                  ]
+                                }
+                              ]
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                ]
+              }
+            },
+            "additionalProperties": true
+          },
+          "inputs": {
+            "type": "array",
+            "description": "Preview contexts for generative formats - defines what scenarios to generate previews for",
+            "items": {
+              "type": "object",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for this preview variant"
+                },
+                "macros": {
+                  "type": "object",
+                  "description": "Macro values to apply for this preview",
+                  "additionalProperties": {
+                    "type": "string"
+                  }
+                },
+                "context_description": {
+                  "type": "string",
+                  "description": "Natural language description of the context for AI-generated content"
+                }
+              },
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
+            }
+          },
+          "tags": {
+            "type": "array",
+            "description": "User-defined tags for organization and searchability",
+            "items": {
+              "type": "string"
+            }
+          },
+          "status": {
+            "title": "Creative Status",
+            "description": "For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+            "type": "string",
+            "enum": [
+              "processing",
+              "pending_review",
+              "approved",
+              "rejected",
+              "archived"
+            ],
+            "enumDescriptions": {
+              "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
+              "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+              "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+              "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+              "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+            }
+          },
+          "weight": {
+            "type": "number",
+            "description": "Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.",
+            "minimum": 0,
+            "maximum": 100
+          },
+          "placement_ids": {
+            "type": "array",
+            "description": "Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "industry_identifiers": {
+            "type": "array",
+            "description": "Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.",
+            "items": {
+              "title": "Industry Identifier",
+              "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+              "type": "object",
+              "properties": {
+                "type": {
+                  "title": "Creative Identifier Type",
+                  "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                  "type": "string",
+                  "enum": [
+                    "ad_id",
+                    "isci",
+                    "clearcast_clock"
+                  ],
+                  "enumDescriptions": {
+                    "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                    "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                    "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                  },
+                  "examples": [
+                    "ad_id",
+                    "isci",
+                    "clearcast_clock"
+                  ]
+                },
+                "value": {
+                  "type": "string",
+                  "maxLength": 64,
+                  "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                }
+              },
+              "required": [
+                "type",
+                "value"
+              ],
+              "additionalProperties": true
+            },
+            "uniqueItems": true
+          },
+          "provenance": {
+            "title": "Provenance",
+            "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).",
+            "type": "object",
+            "properties": {
+              "digital_source_type": {
+                "title": "Digital Source Type",
+                "description": "IPTC-aligned classification of AI involvement in producing this content",
+                "type": "string",
+                "enum": [
+                  "digital_capture",
+                  "digital_creation",
+                  "trained_algorithmic_media",
+                  "composite_with_trained_algorithmic_media",
+                  "algorithmic_media",
+                  "composite_capture",
+                  "composite_synthetic",
+                  "human_edits",
+                  "data_driven_media"
+                ],
+                "enumDescriptions": {
+                  "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                  "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                  "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                  "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                  "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                  "composite_capture": "Multiple digital captures composited together without AI",
+                  "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                  "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                  "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                }
+              },
+              "ai_tool": {
+                "type": "object",
+                "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                "properties": {
+                  "name": {
+                    "type": "string",
+                    "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                  },
+                  "version": {
+                    "type": "string",
+                    "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                  },
+                  "provider": {
+                    "type": "string",
+                    "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                  }
+                },
+                "required": [
+                  "name"
+                ],
+                "additionalProperties": true
+              },
+              "human_oversight": {
+                "type": "string",
+                "description": "Level of human involvement in the AI-assisted creation process",
+                "enum": [
+                  "none",
+                  "prompt_only",
+                  "selected",
+                  "edited",
+                  "directed"
+                ],
+                "enumDescriptions": {
+                  "none": "Fully automated with no human involvement in generation",
+                  "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                  "selected": "Human selected from multiple AI-generated candidates",
+                  "edited": "Human edited or refined AI-generated output",
+                  "directed": "Human directed the creative process with AI as an assistive tool"
+                }
+              },
+              "declared_by": {
+                "type": "object",
+                "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent or service that declared this provenance"
+                  },
+                  "role": {
+                    "type": "string",
+                    "enum": [
+                      "creator",
+                      "advertiser",
+                      "agency",
+                      "platform",
+                      "tool"
+                    ],
+                    "description": "Role of the declaring party in the supply chain",
+                    "enumDescriptions": {
+                      "creator": "The party that created or generated the content",
+                      "advertiser": "The brand or advertiser that owns the content",
+                      "agency": "Agency acting on behalf of the advertiser",
+                      "platform": "Ad platform or publisher that processed the content",
+                      "tool": "Automated tool or service that attached provenance metadata"
+                    }
+                  }
+                },
+                "required": [
+                  "role"
+                ],
+                "additionalProperties": true
+              },
+              "declared_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+              },
+              "created_time": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When this content was created or generated (ISO 8601)"
+              },
+              "c2pa": {
+                "type": "object",
+                "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                "properties": {
+                  "manifest_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL to the C2PA manifest store for this content"
+                  }
+                },
+                "required": [
+                  "manifest_url"
+                ],
+                "additionalProperties": true
+              },
+              "disclosure": {
+                "type": "object",
+                "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                "properties": {
+                  "required": {
+                    "type": "boolean",
+                    "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                  },
+                  "jurisdictions": {
+                    "type": "array",
+                    "description": "Jurisdictions where disclosure obligations apply",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "country": {
+                          "type": "string",
+                          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                        },
+                        "region": {
+                          "type": "string",
+                          "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                        },
+                        "regulation": {
+                          "type": "string",
+                          "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                        },
+                        "label_text": {
+                          "type": "string",
+                          "description": "Required disclosure label text for this jurisdiction, in the local language"
+                        },
+                        "render_guidance": {
+                          "type": "object",
+                          "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                          "minProperties": 1,
+                          "properties": {
+                            "persistence": {
+                              "title": "Disclosure Persistence",
+                              "description": "How long the disclosure must persist during content playback or display",
+                              "type": "string",
+                              "enum": [
+                                "continuous",
+                                "initial",
+                                "flexible"
+                              ],
+                              "enumDescriptions": {
+                                "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                              }
+                            },
+                            "min_duration_ms": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                            },
+                            "positions": {
+                              "type": "array",
+                              "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                              "items": {
+                                "title": "Disclosure Position",
+                                "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                "type": "string",
+                                "enum": [
+                                  "prominent",
+                                  "footer",
+                                  "audio",
+                                  "subtitle",
+                                  "overlay",
+                                  "end_card",
+                                  "pre_roll",
+                                  "companion"
+                                ]
+                              },
+                              "minItems": 1,
+                              "uniqueItems": true
+                            },
+                            "ext": {
+                              "title": "Extension Object",
+                              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                              "type": "object",
+                              "additionalProperties": true
+                            }
+                          },
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "country",
+                        "regulation"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "required"
+                ],
+                "additionalProperties": true
+              },
+              "verification": {
+                "type": "array",
+                "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                "minItems": 1,
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "verified_by": {
+                      "type": "string",
+                      "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                    },
+                    "verified_time": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When the verification was performed (ISO 8601)"
+                    },
+                    "result": {
+                      "type": "string",
+                      "enum": [
+                        "authentic",
+                        "ai_generated",
+                        "ai_modified",
+                        "inconclusive"
+                      ],
+                      "description": "Verification outcome"
+                    },
+                    "confidence": {
+                      "type": "number",
+                      "minimum": 0,
+                      "maximum": 1,
+                      "description": "Confidence score of the verification result (0.0 to 1.0)"
+                    },
+                    "details_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to the full verification report"
+                    }
+                  },
+                  "required": [
+                    "verified_by",
+                    "result"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "creative_id",
+          "name",
+          "format_id",
+          "assets"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1,
+      "maxItems": 100
+    },
+    "agency_estimate_number": {
+      "type": "string",
+      "maxLength": 100,
+      "description": "Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy)."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "product_id",
+    "budget",
+    "pricing_option_id"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.416Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/provide-performance-feedback-request.json b/schemas/cache/bundled/media-buy/provide-performance-feedback-request.json
new file mode 100644
index 000000000..27dc44b0b
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/provide-performance-feedback-request.json
@@ -0,0 +1,114 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Provide Performance Feedback Request",
+  "description": "Request payload for provide_performance_feedback task",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "Seller's media buy identifier",
+      "minLength": 1
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate feedback submissions on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "measurement_period": {
+      "title": "Datetime Range",
+      "description": "Time period for performance measurement",
+      "type": "object",
+      "properties": {
+        "start": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Start timestamp (inclusive), ISO 8601"
+        },
+        "end": {
+          "type": "string",
+          "format": "date-time",
+          "description": "End timestamp (inclusive), ISO 8601"
+        }
+      },
+      "required": [
+        "start",
+        "end"
+      ],
+      "additionalProperties": true
+    },
+    "performance_index": {
+      "type": "number",
+      "description": "Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)",
+      "minimum": 0
+    },
+    "package_id": {
+      "type": "string",
+      "description": "Specific package within the media buy (if feedback is package-specific)",
+      "minLength": 1
+    },
+    "creative_id": {
+      "type": "string",
+      "description": "Specific creative asset (if feedback is creative-specific)",
+      "minLength": 1
+    },
+    "metric_type": {
+      "title": "Metric Type",
+      "description": "The business metric being measured",
+      "type": "string",
+      "enum": [
+        "overall_performance",
+        "conversion_rate",
+        "brand_lift",
+        "click_through_rate",
+        "completion_rate",
+        "viewability",
+        "brand_safety",
+        "cost_efficiency"
+      ],
+      "default": "overall_performance"
+    },
+    "feedback_source": {
+      "title": "Feedback Source",
+      "description": "Source of the performance data",
+      "type": "string",
+      "enum": [
+        "buyer_attribution",
+        "third_party_measurement",
+        "platform_analytics",
+        "verification_partner"
+      ],
+      "default": "buyer_attribution"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "media_buy_id",
+    "measurement_period",
+    "performance_index"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.422Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/provide-performance-feedback-response.json b/schemas/cache/bundled/media-buy/provide-performance-feedback-response.json
new file mode 100644
index 000000000..5685eccca
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/provide-performance-feedback-response.json
@@ -0,0 +1,141 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Provide Performance Feedback Response",
+  "description": "Response payload for provide_performance_feedback task. Returns either success confirmation OR error information, never both.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "ProvidePerformanceFeedbackSuccess",
+      "description": "Success response - feedback received and processed",
+      "type": "object",
+      "properties": {
+        "success": {
+          "type": "boolean",
+          "description": "Whether the performance feedback was successfully received",
+          "const": true
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "success"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "ProvidePerformanceFeedbackError",
+      "description": "Error response - feedback rejected or could not be processed",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Array of errors explaining why feedback was rejected (e.g., invalid measurement period, missing campaign data)",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "success"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.422Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/sync-audiences-request.json b/schemas/cache/bundled/media-buy/sync-audiences-request.json
new file mode 100644
index 000000000..5baa7967d
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/sync-audiences-request.json
@@ -0,0 +1,428 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Audiences Request",
+  "description": "Request parameters for managing CRM-based audiences on an account with upsert semantics. Existing audiences matched by audience_id are updated, new ones are created. Members are specified as delta operations: add appends new members, remove drops existing ones. Recommend no more than 100,000 members per call; for larger lists, chunk and call incrementally using add/remove deltas. When delete_missing is true, buyer-managed audiences on the account not in this request are removed \u2014 do not combine with omitted audiences or all buyer-managed audiences will be deleted. When audiences is omitted, the call is discovery-only: it returns all audiences on the account without modification.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `audience_id` gives resource-level dedup per audience, but the sync envelope emits audit events and may trigger downstream refreshes \u2014 this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `audiences` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account to manage audiences for.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "audiences": {
+      "type": "array",
+      "description": "Audiences to sync (create or update). When omitted, the call is discovery-only and returns all existing audiences on the account without modification.",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "properties": {
+          "audience_id": {
+            "type": "string",
+            "description": "Buyer's identifier for this audience. Used to reference the audience in targeting overlays."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this audience"
+          },
+          "description": {
+            "type": "string",
+            "description": "Human-readable description of this audience's composition or purpose (e.g., 'High-value customers who purchased in the last 90 days')."
+          },
+          "audience_type": {
+            "type": "string",
+            "enum": [
+              "crm",
+              "suppression",
+              "lookalike_seed"
+            ],
+            "description": "Intended use for this audience. 'crm': target these users. 'suppression': exclude these users from delivery. 'lookalike_seed': use as a seed for the seller's lookalike modeling. Sellers may handle audiences differently based on type (e.g., suppression lists bypass minimum size requirements on some platforms)."
+          },
+          "tags": {
+            "type": "array",
+            "description": "Buyer-defined tags for organizing and filtering audiences (e.g., 'holiday_2026', 'high_ltv'). Tags are stored by the seller and returned in discovery-only calls.",
+            "items": {
+              "type": "string",
+              "minLength": 1
+            },
+            "uniqueItems": true
+          },
+          "add": {
+            "type": "array",
+            "description": "Members to add to this audience. Hashed before sending \u2014 normalize emails to lowercase+trim, phones to E.164.",
+            "items": {
+              "title": "Audience Member",
+              "description": "A CRM audience member identified by a buyer-assigned external_id and at least one matchable identifier. All identifiers must be normalized before hashing: emails to lowercase+trim, phone numbers to E.164 format (e.g. +12065551234). Providing multiple identifiers for the same person improves match rates. Composite identifiers (e.g. hashed first name + last name + zip for Google Customer Match) are not yet standardized \u2014 use the ext field for platform-specific extensions.",
+              "type": "object",
+              "properties": {
+                "external_id": {
+                  "type": "string",
+                  "description": "Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+                },
+                "hashed_email": {
+                  "type": "string",
+                  "description": "SHA-256 hash of lowercase, trimmed email address.",
+                  "pattern": "^[a-f0-9]{64}$"
+                },
+                "hashed_phone": {
+                  "type": "string",
+                  "description": "SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).",
+                  "pattern": "^[a-f0-9]{64}$"
+                },
+                "uids": {
+                  "type": "array",
+                  "description": "Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "type": {
+                        "title": "UID Type",
+                        "description": "Universal ID type",
+                        "type": "string",
+                        "enum": [
+                          "rampid",
+                          "rampid_derived",
+                          "id5",
+                          "uid2",
+                          "euid",
+                          "pairid",
+                          "maid",
+                          "hashed_email",
+                          "publisher_first_party",
+                          "other"
+                        ],
+                        "enumDescriptions": {
+                          "rampid": "LiveRamp RampID maintained form (XY, 32 bytes on the wire)",
+                          "rampid_derived": "LiveRamp RampID derived form (Xi, 48 bytes on the wire)",
+                          "id5": "ID5 universal ID",
+                          "uid2": "Unified ID 2.0",
+                          "euid": "European Unified ID",
+                          "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+                          "maid": "Mobile Advertising ID (IDFA/GAID)",
+                          "hashed_email": "SHA-256 hashed email address",
+                          "publisher_first_party": "Publisher's own first-party identifier, opaque to buyers",
+                          "other": "Other universal ID type (specify in ext)"
+                        }
+                      },
+                      "value": {
+                        "type": "string",
+                        "description": "Universal ID value"
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "minItems": 1
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "external_id"
+              ],
+              "anyOf": [
+                {
+                  "required": [
+                    "hashed_email"
+                  ]
+                },
+                {
+                  "required": [
+                    "hashed_phone"
+                  ]
+                },
+                {
+                  "required": [
+                    "uids"
+                  ]
+                }
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "remove": {
+            "type": "array",
+            "description": "Members to remove from this audience. If the same identifier appears in both add and remove in a single request, remove takes precedence.",
+            "items": {
+              "title": "Audience Member",
+              "description": "A CRM audience member identified by a buyer-assigned external_id and at least one matchable identifier. All identifiers must be normalized before hashing: emails to lowercase+trim, phone numbers to E.164 format (e.g. +12065551234). Providing multiple identifiers for the same person improves match rates. Composite identifiers (e.g. hashed first name + last name + zip for Google Customer Match) are not yet standardized \u2014 use the ext field for platform-specific extensions.",
+              "type": "object",
+              "properties": {
+                "external_id": {
+                  "type": "string",
+                  "description": "Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+                },
+                "hashed_email": {
+                  "type": "string",
+                  "description": "SHA-256 hash of lowercase, trimmed email address.",
+                  "pattern": "^[a-f0-9]{64}$"
+                },
+                "hashed_phone": {
+                  "type": "string",
+                  "description": "SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).",
+                  "pattern": "^[a-f0-9]{64}$"
+                },
+                "uids": {
+                  "type": "array",
+                  "description": "Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "type": {
+                        "title": "UID Type",
+                        "description": "Universal ID type",
+                        "type": "string",
+                        "enum": [
+                          "rampid",
+                          "rampid_derived",
+                          "id5",
+                          "uid2",
+                          "euid",
+                          "pairid",
+                          "maid",
+                          "hashed_email",
+                          "publisher_first_party",
+                          "other"
+                        ],
+                        "enumDescriptions": {
+                          "rampid": "LiveRamp RampID maintained form (XY, 32 bytes on the wire)",
+                          "rampid_derived": "LiveRamp RampID derived form (Xi, 48 bytes on the wire)",
+                          "id5": "ID5 universal ID",
+                          "uid2": "Unified ID 2.0",
+                          "euid": "European Unified ID",
+                          "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+                          "maid": "Mobile Advertising ID (IDFA/GAID)",
+                          "hashed_email": "SHA-256 hashed email address",
+                          "publisher_first_party": "Publisher's own first-party identifier, opaque to buyers",
+                          "other": "Other universal ID type (specify in ext)"
+                        }
+                      },
+                      "value": {
+                        "type": "string",
+                        "description": "Universal ID value"
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "minItems": 1
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "external_id"
+              ],
+              "anyOf": [
+                {
+                  "required": [
+                    "hashed_email"
+                  ]
+                },
+                {
+                  "required": [
+                    "hashed_phone"
+                  ]
+                },
+                {
+                  "required": [
+                    "uids"
+                  ]
+                }
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "delete": {
+            "type": "boolean",
+            "description": "When true, delete this audience from the account entirely. All other fields on this audience object are ignored. Use this to delete a specific audience without affecting others."
+          },
+          "consent_basis": {
+            "title": "Consent Basis",
+            "description": "GDPR lawful basis for processing this audience list. Informational \u2014 not validated by the protocol, but required by some sellers operating in regulated markets (e.g. EU). When omitted, the buyer asserts they have a lawful basis appropriate to their jurisdiction.",
+            "type": "string",
+            "enum": [
+              "consent",
+              "legitimate_interest",
+              "contract",
+              "legal_obligation"
+            ]
+          }
+        },
+        "required": [
+          "audience_id"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, buyer-managed audiences on the account not included in this sync will be removed. Does not affect seller-managed audiences. Do not combine with an omitted audiences array or all buyer-managed audiences will be deleted."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account"
+  ],
+  "if": {
+    "properties": {
+      "delete_missing": {
+        "const": true
+      }
+    },
+    "required": [
+      "delete_missing"
+    ]
+  },
+  "then": {
+    "required": [
+      "audiences"
+    ]
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.423Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/sync-audiences-response.json b/schemas/cache/bundled/media-buy/sync-audiences-response.json
new file mode 100644
index 000000000..4383dcc64
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/sync-audiences-response.json
@@ -0,0 +1,327 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Audiences Response",
+  "description": "Response from audience sync operation. Returns either per-audience results OR operation-level errors.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "SyncAudiencesSuccess",
+      "description": "Success response - sync operation processed audiences",
+      "type": "object",
+      "properties": {
+        "audiences": {
+          "type": "array",
+          "description": "Results for each audience on the account",
+          "items": {
+            "type": "object",
+            "properties": {
+              "audience_id": {
+                "type": "string",
+                "description": "Audience ID from the request (buyer's identifier)"
+              },
+              "name": {
+                "type": "string",
+                "description": "Name of the audience"
+              },
+              "seller_id": {
+                "type": "string",
+                "description": "Seller-assigned identifier for this audience in their ad platform"
+              },
+              "action": {
+                "type": "string",
+                "enum": [
+                  "created",
+                  "updated",
+                  "unchanged",
+                  "deleted",
+                  "failed"
+                ],
+                "description": "Action taken for this audience. 'status' is present when action is created, updated, or unchanged. 'status' is absent when action is deleted or failed."
+              },
+              "status": {
+                "type": "string",
+                "enum": [
+                  "processing",
+                  "ready",
+                  "too_small"
+                ],
+                "description": "Matching status. Present when action is created, updated, or unchanged; absent when action is deleted or failed. 'processing': platform is still matching members against its user base. 'ready': audience is available for targeting, matched_count is populated. 'too_small': matched audience is below the platform's minimum size \u2014 add more members and re-sync."
+              },
+              "uploaded_count": {
+                "type": "integer",
+                "description": "Number of members submitted in this sync operation (delta, not cumulative). In discovery-only calls (no audiences array), this is 0.",
+                "minimum": 0
+              },
+              "total_uploaded_count": {
+                "type": "integer",
+                "description": "Cumulative number of members uploaded across all syncs for this audience. Compare with matched_count to calculate match rate (matched_count / total_uploaded_count). Populated when the seller tracks cumulative upload counts.",
+                "minimum": 0
+              },
+              "matched_count": {
+                "type": "integer",
+                "description": "Total members matched to platform users across all syncs (cumulative, not just this call). Populated when status is 'ready'.",
+                "minimum": 0
+              },
+              "effective_match_rate": {
+                "type": "number",
+                "description": "Deduplicated match rate across all identifier types (matched_count / total_uploaded_count after deduplication). A single number for reach estimation. Populated when status is 'ready'.",
+                "minimum": 0,
+                "maximum": 1
+              },
+              "match_breakdown": {
+                "type": "array",
+                "description": "Per-identifier-type match results. Shows which ID types are resolving and at what rate. Helps buyers decide which identifiers to prioritize. Populated when the seller can report per-type matching. Omitted when the seller only supports aggregate match counts.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "id_type": {
+                      "title": "Match ID Type",
+                      "description": "Identifier type. Combines hashed PII types (hashed_email, hashed_phone) with universal ID types (rampid, uid2, maid, etc.).",
+                      "type": "string",
+                      "enum": [
+                        "hashed_email",
+                        "hashed_phone",
+                        "rampid",
+                        "id5",
+                        "uid2",
+                        "euid",
+                        "pairid",
+                        "maid",
+                        "other"
+                      ],
+                      "enumDescriptions": {
+                        "hashed_email": "SHA-256 hashed email address (matches audience-member.hashed_email)",
+                        "hashed_phone": "SHA-256 hashed phone number in E.164 format (matches audience-member.hashed_phone)",
+                        "rampid": "LiveRamp RampID",
+                        "id5": "ID5 universal ID",
+                        "uid2": "Unified ID 2.0",
+                        "euid": "European Unified ID",
+                        "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+                        "maid": "Mobile Advertising ID (IDFA/GAID)",
+                        "other": "Other identifier type (specify in ext)"
+                      }
+                    },
+                    "submitted": {
+                      "type": "integer",
+                      "description": "Cumulative number of members submitted with this identifier type across all syncs (matches total_uploaded_count semantics, not uploaded_count). Compare with matched to calculate per-type match rate.",
+                      "minimum": 0
+                    },
+                    "matched": {
+                      "type": "integer",
+                      "description": "Cumulative number of members matched via this identifier type across all syncs.",
+                      "minimum": 0
+                    },
+                    "match_rate": {
+                      "type": "number",
+                      "description": "Match rate for this identifier type (matched / submitted). Server-authoritative \u2014 consumers should prefer this value over computing their own.",
+                      "minimum": 0,
+                      "maximum": 1
+                    }
+                  },
+                  "required": [
+                    "id_type",
+                    "submitted",
+                    "matched",
+                    "match_rate"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "last_synced_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp of when the most recent sync operation was accepted by the platform. Useful for agents reasoning about audience freshness. Omitted if the seller does not track this."
+              },
+              "minimum_size": {
+                "type": "integer",
+                "description": "Minimum matched audience size required for targeting on this platform. Populated when status is 'too_small'. Helps agents know how many more members are needed.",
+                "minimum": 1
+              },
+              "errors": {
+                "type": "array",
+                "description": "Errors for this audience (only present when action='failed')",
+                "items": {
+                  "title": "Error",
+                  "description": "Standard error structure for task-specific errors and warnings",
+                  "type": "object",
+                  "properties": {
+                    "code": {
+                      "type": "string",
+                      "minLength": 1,
+                      "maxLength": 64,
+                      "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+                    },
+                    "message": {
+                      "type": "string",
+                      "description": "Human-readable error message"
+                    },
+                    "field": {
+                      "type": "string",
+                      "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+                    },
+                    "suggestion": {
+                      "type": "string",
+                      "description": "Suggested fix for the error"
+                    },
+                    "retry_after": {
+                      "type": "number",
+                      "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                      "minimum": 1,
+                      "maximum": 3600
+                    },
+                    "details": {
+                      "type": "object",
+                      "description": "Additional task-specific error details",
+                      "additionalProperties": true
+                    },
+                    "recovery": {
+                      "type": "string",
+                      "enum": [
+                        "transient",
+                        "correctable",
+                        "terminal"
+                      ],
+                      "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "message"
+                  ],
+                  "additionalProperties": true
+                }
+              }
+            },
+            "required": [
+              "audience_id",
+              "action"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "audiences"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "SyncAudiencesError",
+      "description": "Error response - operation failed completely",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors that prevented processing",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "audiences"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.423Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/sync-catalogs-request.json b/schemas/cache/bundled/media-buy/sync-catalogs-request.json
new file mode 100644
index 000000000..eef6c118e
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/sync-catalogs-request.json
@@ -0,0 +1,789 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Catalogs Request",
+  "description": "Request parameters for syncing catalog feeds with upsert semantics. Supports bulk operations across multiple catalog types (products, inventory, stores, promotions, offerings). Existing catalogs matched by catalog_id are updated, new ones are created. When catalogs is omitted, the call is discovery-only: returns all catalogs on the account without modification.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `catalog_id` gives resource-level dedup per catalog, but the sync envelope emits audit events and triggers platform review for large feeds \u2014 this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `catalogs` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account that owns these catalogs.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "catalogs": {
+      "type": "array",
+      "description": "Array of catalog feeds to sync (create or update). When omitted, the call is discovery-only and returns all existing catalogs on the account without modification.",
+      "items": {
+        "title": "Catalog",
+        "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+        "type": "object",
+        "properties": {
+          "catalog_id": {
+            "type": "string",
+            "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+          },
+          "type": {
+            "title": "Catalog Type",
+            "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+            "type": "string",
+            "enum": [
+              "offering",
+              "product",
+              "inventory",
+              "store",
+              "promotion",
+              "hotel",
+              "flight",
+              "job",
+              "vehicle",
+              "real_estate",
+              "education",
+              "destination",
+              "app"
+            ]
+          },
+          "url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+          },
+          "feed_format": {
+            "title": "Feed Format",
+            "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+            "type": "string",
+            "enum": [
+              "google_merchant_center",
+              "facebook_catalog",
+              "shopify",
+              "linkedin_jobs",
+              "custom"
+            ]
+          },
+          "update_frequency": {
+            "title": "Update Frequency",
+            "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+            "type": "string",
+            "enum": [
+              "realtime",
+              "hourly",
+              "daily",
+              "weekly"
+            ]
+          },
+          "items": {
+            "type": "array",
+            "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            "items": {
+              "type": "object"
+            },
+            "minItems": 1
+          },
+          "ids": {
+            "type": "array",
+            "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "gtins": {
+            "type": "array",
+            "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            "items": {
+              "type": "string",
+              "pattern": "^[0-9]{8,14}$"
+            },
+            "minItems": 1
+          },
+          "tags": {
+            "type": "array",
+            "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "category": {
+            "type": "string",
+            "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+          },
+          "query": {
+            "type": "string",
+            "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+          },
+          "conversion_events": {
+            "type": "array",
+            "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            "items": {
+              "title": "Event Type",
+              "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+              "type": "string",
+              "enum": [
+                "page_view",
+                "view_content",
+                "select_content",
+                "select_item",
+                "search",
+                "share",
+                "add_to_cart",
+                "remove_from_cart",
+                "viewed_cart",
+                "add_to_wishlist",
+                "initiate_checkout",
+                "add_payment_info",
+                "purchase",
+                "refund",
+                "lead",
+                "qualify_lead",
+                "close_convert_lead",
+                "disqualify_lead",
+                "complete_registration",
+                "subscribe",
+                "start_trial",
+                "app_install",
+                "app_launch",
+                "contact",
+                "schedule",
+                "donate",
+                "submit_application",
+                "custom"
+              ],
+              "enumDescriptions": {
+                "page_view": "User viewed a page",
+                "view_content": "User viewed specific content (product, article, etc.)",
+                "select_content": "User selected or clicked on content (article, video, etc.)",
+                "select_item": "User selected a specific product or item from a list",
+                "search": "User performed a search",
+                "share": "User shared content via social or messaging",
+                "add_to_cart": "User added an item to cart",
+                "remove_from_cart": "User removed an item from cart",
+                "viewed_cart": "User viewed their shopping cart",
+                "add_to_wishlist": "User added an item to a wishlist",
+                "initiate_checkout": "User started checkout process",
+                "add_payment_info": "User added payment information",
+                "purchase": "User completed a purchase",
+                "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                "lead": "User expressed interest (form submission, signup, etc.)",
+                "qualify_lead": "Lead qualified by sales or scoring criteria",
+                "close_convert_lead": "Lead converted to a customer or closed deal",
+                "disqualify_lead": "Lead disqualified or marked as not viable",
+                "complete_registration": "User completed account registration",
+                "subscribe": "User subscribed to a service or newsletter",
+                "start_trial": "User started a free trial",
+                "app_install": "User installed an application",
+                "app_launch": "User launched an application",
+                "contact": "User initiated contact (call, message, etc.)",
+                "schedule": "User scheduled an appointment or event",
+                "donate": "User made a donation",
+                "submit_application": "User submitted an application (loan, job, etc.)",
+                "custom": "Custom event type (specify in custom_event_name)"
+              }
+            },
+            "minItems": 1,
+            "uniqueItems": true
+          },
+          "content_id_type": {
+            "title": "Content ID Type",
+            "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            "type": "string",
+            "enum": [
+              "sku",
+              "gtin",
+              "offering_id",
+              "job_id",
+              "hotel_id",
+              "flight_id",
+              "vehicle_id",
+              "listing_id",
+              "store_id",
+              "program_id",
+              "destination_id",
+              "app_id"
+            ]
+          },
+          "feed_field_mappings": {
+            "type": "array",
+            "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+            "items": {
+              "title": "Catalog Field Mapping",
+              "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+              "type": "object",
+              "properties": {
+                "feed_field": {
+                  "type": "string",
+                  "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                },
+                "catalog_field": {
+                  "type": "string",
+                  "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                },
+                "asset_group_id": {
+                  "type": "string",
+                  "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                },
+                "value": {
+                  "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                },
+                "transform": {
+                  "type": "string",
+                  "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                  "enum": [
+                    "date",
+                    "divide",
+                    "boolean",
+                    "split"
+                  ]
+                },
+                "format": {
+                  "type": "string",
+                  "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                },
+                "timezone": {
+                  "type": "string",
+                  "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                },
+                "by": {
+                  "type": "number",
+                  "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                  "exclusiveMinimum": 0
+                },
+                "separator": {
+                  "type": "string",
+                  "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                  "default": ","
+                },
+                "default": {
+                  "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                },
+                "ext": {
+                  "title": "Extension Object",
+                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                  "type": "object",
+                  "additionalProperties": true
+                }
+              },
+              "allOf": [
+                {
+                  "not": {
+                    "required": [
+                      "feed_field",
+                      "value"
+                    ]
+                  }
+                },
+                {
+                  "not": {
+                    "required": [
+                      "catalog_field",
+                      "asset_group_id"
+                    ]
+                  }
+                }
+              ],
+              "additionalProperties": true,
+              "examples": [
+                {
+                  "description": "Simple field rename",
+                  "data": {
+                    "feed_field": "hotel_name",
+                    "catalog_field": "name"
+                  }
+                },
+                {
+                  "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                  "data": {
+                    "feed_field": "available_from",
+                    "catalog_field": "valid_from",
+                    "transform": "date",
+                    "format": "YYYYMMDD",
+                    "timezone": "UTC"
+                  }
+                },
+                {
+                  "description": "Divide cents to dollars",
+                  "data": {
+                    "feed_field": "price_cents",
+                    "catalog_field": "price.amount",
+                    "transform": "divide",
+                    "by": 100
+                  }
+                },
+                {
+                  "description": "Static literal injection \u2014 currency not in feed",
+                  "data": {
+                    "catalog_field": "price.currency",
+                    "value": "USD"
+                  }
+                },
+                {
+                  "description": "Image URL assigned to typed asset pool",
+                  "data": {
+                    "feed_field": "primary_photo_url",
+                    "asset_group_id": "images_landscape"
+                  }
+                },
+                {
+                  "description": "Vertical photo URL assigned to vertical pool",
+                  "data": {
+                    "feed_field": "portrait_photo_url",
+                    "asset_group_id": "images_vertical"
+                  }
+                },
+                {
+                  "description": "Split comma-separated tags to array",
+                  "data": {
+                    "feed_field": "amenity_list",
+                    "catalog_field": "amenities",
+                    "transform": "split",
+                    "separator": ","
+                  }
+                },
+                {
+                  "description": "Boolean coercion with default",
+                  "data": {
+                    "feed_field": "is_available",
+                    "catalog_field": "available",
+                    "transform": "boolean",
+                    "default": false
+                  }
+                }
+              ]
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "type"
+        ],
+        "additionalProperties": true,
+        "examples": [
+          {
+            "description": "Synced product catalog from Google Merchant Center",
+            "data": {
+              "catalog_id": "gmc-primary",
+              "name": "Primary Product Feed",
+              "type": "product",
+              "url": "https://feeds.acmecorp.com/products.xml",
+              "feed_format": "google_merchant_center",
+              "update_frequency": "daily"
+            }
+          },
+          {
+            "description": "Inventory feed for store-level stock data",
+            "data": {
+              "catalog_id": "store-inventory",
+              "name": "Store Inventory",
+              "type": "inventory",
+              "url": "https://feeds.acmecorp.com/inventory.json",
+              "feed_format": "custom",
+              "update_frequency": "hourly"
+            }
+          },
+          {
+            "description": "Store locator feed",
+            "data": {
+              "catalog_id": "retail-locations",
+              "name": "Retail Locations",
+              "type": "store",
+              "url": "https://feeds.acmecorp.com/stores.json",
+              "feed_format": "custom",
+              "update_frequency": "weekly"
+            }
+          },
+          {
+            "description": "Promotional pricing feed",
+            "data": {
+              "catalog_id": "summer-sale",
+              "name": "Summer Sale Promotions",
+              "type": "promotion",
+              "url": "https://feeds.acmecorp.com/promotions.json",
+              "feed_format": "google_merchant_center",
+              "update_frequency": "daily"
+            }
+          },
+          {
+            "description": "Inline offering catalog (no sync needed)",
+            "data": {
+              "type": "offering",
+              "items": [
+                {
+                  "offering_id": "summer-sale",
+                  "name": "Summer Sale",
+                  "landing_url": "https://acme.com/summer"
+                }
+              ]
+            }
+          },
+          {
+            "description": "Reference to a previously synced catalog by ID",
+            "data": {
+              "catalog_id": "gmc-primary",
+              "type": "product",
+              "ids": [
+                "SKU-12345",
+                "SKU-67890"
+              ]
+            }
+          },
+          {
+            "description": "Product catalog with GTIN cross-retailer matching and attribution",
+            "data": {
+              "type": "product",
+              "gtins": [
+                "00013000006040",
+                "00013000006057"
+              ],
+              "content_id_type": "gtin",
+              "conversion_events": [
+                "purchase",
+                "add_to_cart"
+              ]
+            }
+          },
+          {
+            "description": "Inline store catalog with catchment areas",
+            "data": {
+              "catalog_id": "retail-locations",
+              "name": "Retail Locations",
+              "type": "store",
+              "items": [
+                {
+                  "store_id": "amsterdam-flagship",
+                  "name": "Amsterdam Flagship",
+                  "location": {
+                    "lat": 52.3676,
+                    "lng": 4.9041
+                  },
+                  "catchments": [
+                    {
+                      "catchment_id": "walk",
+                      "travel_time": {
+                        "value": 10,
+                        "unit": "min"
+                      },
+                      "transport_mode": "walking"
+                    },
+                    {
+                      "catchment_id": "drive",
+                      "travel_time": {
+                        "value": 15,
+                        "unit": "min"
+                      },
+                      "transport_mode": "driving"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        ]
+      },
+      "minItems": 1,
+      "maxItems": 50
+    },
+    "catalog_ids": {
+      "type": "array",
+      "description": "Optional filter to limit sync scope to specific catalog IDs. When provided, only these catalogs will be created/updated. Other catalogs on the account are unaffected.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "maxItems": 50
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, buyer-managed catalogs on the account not included in this sync will be removed. Does not affect seller-managed catalogs. Do not combine with an omitted catalogs array or all buyer-managed catalogs will be deleted."
+    },
+    "dry_run": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, preview changes without applying them. Returns what would be created/updated/deleted."
+    },
+    "validation_mode": {
+      "title": "Validation Mode",
+      "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid catalogs and reports errors.",
+      "type": "string",
+      "enum": [
+        "strict",
+        "lenient"
+      ],
+      "default": "strict"
+    },
+    "push_notification_config": {
+      "title": "Push Notification Config",
+      "description": "Optional webhook configuration for async sync notifications. Publisher will send webhook when sync completes if operation takes longer than immediate response time (common for large feeds requiring platform review).",
+      "type": "object",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for task status notifications"
+        },
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "title": "Authentication Scheme",
+                "description": "Authentication schemes for push notification endpoints",
+                "type": "string",
+                "enum": [
+                  "Bearer",
+                  "HMAC-SHA256"
+                ]
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        }
+      },
+      "required": [
+        "url",
+        "authentication"
+      ]
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account"
+  ],
+  "if": {
+    "properties": {
+      "delete_missing": {
+        "const": true
+      }
+    },
+    "required": [
+      "delete_missing"
+    ]
+  },
+  "then": {
+    "required": [
+      "catalogs"
+    ],
+    "errorMessage": "catalogs is required when delete_missing is true \u2014 omitting it would delete all buyer-managed catalogs on the account"
+  },
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Sync product and inventory feeds for a retail media campaign",
+      "data": {
+        "idempotency_key": "a1d5c8e9-7890-489c-def0-12345678901a",
+        "account": {
+          "account_id": "acct_acmecorp"
+        },
+        "catalogs": [
+          {
+            "catalog_id": "product-feed",
+            "name": "Acme Product Catalog",
+            "type": "product",
+            "url": "https://feeds.acmecorp.com/products.xml",
+            "feed_format": "google_merchant_center",
+            "update_frequency": "daily"
+          },
+          {
+            "catalog_id": "inventory-feed",
+            "name": "Store Inventory",
+            "type": "inventory",
+            "url": "https://feeds.acmecorp.com/inventory.json",
+            "feed_format": "custom",
+            "update_frequency": "hourly"
+          }
+        ]
+      }
+    },
+    {
+      "description": "Sync inline offerings for a recruitment campaign",
+      "data": {
+        "idempotency_key": "b2e6d9f0-8901-489d-ef01-23456789012b",
+        "account": {
+          "account_id": "acct_restaurants"
+        },
+        "catalogs": [
+          {
+            "catalog_id": "chef-vacancies",
+            "name": "Chef Position Vacancies",
+            "type": "offering",
+            "items": [
+              {
+                "offering_id": "chef-amsterdam-42",
+                "name": "Head Chef - Amsterdam",
+                "description": "Lead our kitchen team in central Amsterdam",
+                "landing_url": "https://jobs.acme-restaurants.com/chef-amsterdam-42",
+                "geo_targets": {
+                  "countries": [
+                    "NL"
+                  ],
+                  "regions": [
+                    "NL-NH"
+                  ]
+                }
+              }
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "description": "Discovery-only: list all catalogs on the account",
+      "data": {
+        "idempotency_key": "c3f7e0a1-9012-489e-f012-34567890123c",
+        "account": {
+          "account_id": "acct_acmecorp"
+        }
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.424Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/sync-catalogs-response.json b/schemas/cache/bundled/media-buy/sync-catalogs-response.json
new file mode 100644
index 000000000..2f1700fdf
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/sync-catalogs-response.json
@@ -0,0 +1,319 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Catalogs Response",
+  "description": "Response from catalog sync operation. Returns either per-catalog results (best-effort processing) OR operation-level errors (complete failure). Platforms may approve, reject, or flag individual items within each catalog (similar to Google Merchant Center product review).",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "SyncCatalogsSuccess",
+      "description": "Success response - sync operation processed catalogs (may include per-catalog failures)",
+      "type": "object",
+      "properties": {
+        "dry_run": {
+          "type": "boolean",
+          "description": "Whether this was a dry run (no actual changes made)"
+        },
+        "catalogs": {
+          "type": "array",
+          "description": "Results for each catalog processed. Items with action='failed' indicate per-catalog validation/processing failures, not operation-level failures.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "catalog_id": {
+                "type": "string",
+                "description": "Catalog ID from the request"
+              },
+              "action": {
+                "title": "Catalog Action",
+                "description": "Action taken for this catalog",
+                "type": "string",
+                "enum": [
+                  "created",
+                  "updated",
+                  "unchanged",
+                  "failed",
+                  "deleted"
+                ]
+              },
+              "platform_id": {
+                "type": "string",
+                "description": "Platform-specific ID assigned to the catalog"
+              },
+              "item_count": {
+                "type": "integer",
+                "minimum": 0,
+                "description": "Total number of items in the catalog after sync"
+              },
+              "items_approved": {
+                "type": "integer",
+                "minimum": 0,
+                "description": "Number of items approved by the platform. Populated when the platform performs item-level review."
+              },
+              "items_pending": {
+                "type": "integer",
+                "minimum": 0,
+                "description": "Number of items pending platform review. Common for product catalogs where items must pass content policy checks."
+              },
+              "items_rejected": {
+                "type": "integer",
+                "minimum": 0,
+                "description": "Number of items rejected by the platform. Check item_issues for rejection reasons."
+              },
+              "item_issues": {
+                "type": "array",
+                "description": "Per-item issues reported by the platform (rejections, warnings). Only present when the platform performs item-level review.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "item_id": {
+                      "type": "string",
+                      "description": "ID of the catalog item with an issue"
+                    },
+                    "status": {
+                      "title": "Catalog Item Status",
+                      "description": "Item review status",
+                      "type": "string",
+                      "enum": [
+                        "approved",
+                        "pending",
+                        "rejected",
+                        "warning"
+                      ],
+                      "enumDescriptions": {
+                        "approved": "Item passed platform review and is eligible for use in campaigns",
+                        "pending": "Item is awaiting platform review. Items enter this state on initial sync and when re-synced after rejection.",
+                        "rejected": "Item failed platform review (missing fields, policy violation, invalid data). Not terminal \u2014 fix the issue in the catalog and re-sync to reset the item to pending.",
+                        "warning": "Item is approved and serving but has issues worth fixing (e.g., low-quality image, missing optional fields). The item remains eligible for delivery."
+                      }
+                    },
+                    "reasons": {
+                      "type": "array",
+                      "description": "Reasons for rejection or warning",
+                      "items": {
+                        "type": "string"
+                      }
+                    }
+                  },
+                  "required": [
+                    "item_id",
+                    "status"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "last_synced_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp of when the most recent sync was accepted by the platform"
+              },
+              "next_fetch_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp of when the platform will next fetch the feed URL. Only present for URL-based catalogs with update_frequency."
+              },
+              "changes": {
+                "type": "array",
+                "description": "Field names that were modified (only present when action='updated')",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "errors": {
+                "type": "array",
+                "description": "Validation or processing errors (only present when action='failed')",
+                "items": {
+                  "title": "Error",
+                  "description": "Standard error structure for task-specific errors and warnings",
+                  "type": "object",
+                  "properties": {
+                    "code": {
+                      "type": "string",
+                      "minLength": 1,
+                      "maxLength": 64,
+                      "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+                    },
+                    "message": {
+                      "type": "string",
+                      "description": "Human-readable error message"
+                    },
+                    "field": {
+                      "type": "string",
+                      "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+                    },
+                    "suggestion": {
+                      "type": "string",
+                      "description": "Suggested fix for the error"
+                    },
+                    "retry_after": {
+                      "type": "number",
+                      "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                      "minimum": 1,
+                      "maximum": 3600
+                    },
+                    "details": {
+                      "type": "object",
+                      "description": "Additional task-specific error details",
+                      "additionalProperties": true
+                    },
+                    "recovery": {
+                      "type": "string",
+                      "enum": [
+                        "transient",
+                        "correctable",
+                        "terminal"
+                      ],
+                      "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "message"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "warnings": {
+                "type": "array",
+                "description": "Non-fatal warnings about this catalog",
+                "items": {
+                  "type": "string"
+                }
+              }
+            },
+            "required": [
+              "catalog_id",
+              "action"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "catalogs"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "SyncCatalogsError",
+      "description": "Error response - operation failed completely, no catalogs were processed",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors that prevented processing any catalogs (e.g., authentication failure, service unavailable, invalid request format)",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "catalogs"
+            ]
+          },
+          {
+            "required": [
+              "dry_run"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.425Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/sync-event-sources-request.json b/schemas/cache/bundled/media-buy/sync-event-sources-request.json
new file mode 100644
index 000000000..eb973e93e
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/sync-event-sources-request.json
@@ -0,0 +1,252 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Event Sources Request",
+  "description": "Request parameters for configuring event sources on an account with upsert semantics. Existing event sources matched by event_source_id are updated, new ones are created. When delete_missing is true, buyer-managed event sources on the account not in this request are removed. When event_sources is omitted, the call is discovery-only: it returns all event sources on the account without modification. The response always includes both synced and seller-managed event sources for full visibility.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `event_source_id` gives resource-level dedup per source, but the sync envelope emits audit events and can trigger downstream pixel provisioning \u2014 this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `event_sources` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account to configure event sources for.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "event_sources": {
+      "type": "array",
+      "description": "Event sources to sync (create or update). When omitted, the call is discovery-only and returns all existing event sources on the account without modification.",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "properties": {
+          "event_source_id": {
+            "type": "string",
+            "description": "Unique identifier for this event source"
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this event source"
+          },
+          "event_types": {
+            "type": "array",
+            "description": "Event types this source handles (e.g. purchase, lead). If omitted, accepts all event types.",
+            "items": {
+              "title": "Event Type",
+              "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+              "type": "string",
+              "enum": [
+                "page_view",
+                "view_content",
+                "select_content",
+                "select_item",
+                "search",
+                "share",
+                "add_to_cart",
+                "remove_from_cart",
+                "viewed_cart",
+                "add_to_wishlist",
+                "initiate_checkout",
+                "add_payment_info",
+                "purchase",
+                "refund",
+                "lead",
+                "qualify_lead",
+                "close_convert_lead",
+                "disqualify_lead",
+                "complete_registration",
+                "subscribe",
+                "start_trial",
+                "app_install",
+                "app_launch",
+                "contact",
+                "schedule",
+                "donate",
+                "submit_application",
+                "custom"
+              ],
+              "enumDescriptions": {
+                "page_view": "User viewed a page",
+                "view_content": "User viewed specific content (product, article, etc.)",
+                "select_content": "User selected or clicked on content (article, video, etc.)",
+                "select_item": "User selected a specific product or item from a list",
+                "search": "User performed a search",
+                "share": "User shared content via social or messaging",
+                "add_to_cart": "User added an item to cart",
+                "remove_from_cart": "User removed an item from cart",
+                "viewed_cart": "User viewed their shopping cart",
+                "add_to_wishlist": "User added an item to a wishlist",
+                "initiate_checkout": "User started checkout process",
+                "add_payment_info": "User added payment information",
+                "purchase": "User completed a purchase",
+                "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                "lead": "User expressed interest (form submission, signup, etc.)",
+                "qualify_lead": "Lead qualified by sales or scoring criteria",
+                "close_convert_lead": "Lead converted to a customer or closed deal",
+                "disqualify_lead": "Lead disqualified or marked as not viable",
+                "complete_registration": "User completed account registration",
+                "subscribe": "User subscribed to a service or newsletter",
+                "start_trial": "User started a free trial",
+                "app_install": "User installed an application",
+                "app_launch": "User launched an application",
+                "contact": "User initiated contact (call, message, etc.)",
+                "schedule": "User scheduled an appointment or event",
+                "donate": "User made a donation",
+                "submit_application": "User submitted an application (loan, job, etc.)",
+                "custom": "Custom event type (specify in custom_event_name)"
+              }
+            },
+            "minItems": 1
+          },
+          "allowed_domains": {
+            "type": "array",
+            "description": "Domains authorized to send events for this event source",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "event_source_id"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, event sources not included in this sync will be removed"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.426Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/sync-event-sources-response.json b/schemas/cache/bundled/media-buy/sync-event-sources-response.json
new file mode 100644
index 000000000..f6e9c4d5b
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/sync-event-sources-response.json
@@ -0,0 +1,459 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Event Sources Response",
+  "description": "Response from event source sync operation. Returns either per-source results OR operation-level errors.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "SyncEventSourcesSuccess",
+      "description": "Success response - sync operation processed event sources",
+      "type": "object",
+      "properties": {
+        "event_sources": {
+          "type": "array",
+          "description": "Results for each event source, including both synced and seller-managed sources on the account",
+          "items": {
+            "type": "object",
+            "properties": {
+              "event_source_id": {
+                "type": "string",
+                "description": "Event source ID from the request"
+              },
+              "name": {
+                "type": "string",
+                "description": "Name of the event source"
+              },
+              "seller_id": {
+                "type": "string",
+                "description": "Seller-assigned identifier for this event source (the ID in the seller's ad platform)"
+              },
+              "event_types": {
+                "type": "array",
+                "description": "Event types this source handles",
+                "items": {
+                  "title": "Event Type",
+                  "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                  "type": "string",
+                  "enum": [
+                    "page_view",
+                    "view_content",
+                    "select_content",
+                    "select_item",
+                    "search",
+                    "share",
+                    "add_to_cart",
+                    "remove_from_cart",
+                    "viewed_cart",
+                    "add_to_wishlist",
+                    "initiate_checkout",
+                    "add_payment_info",
+                    "purchase",
+                    "refund",
+                    "lead",
+                    "qualify_lead",
+                    "close_convert_lead",
+                    "disqualify_lead",
+                    "complete_registration",
+                    "subscribe",
+                    "start_trial",
+                    "app_install",
+                    "app_launch",
+                    "contact",
+                    "schedule",
+                    "donate",
+                    "submit_application",
+                    "custom"
+                  ],
+                  "enumDescriptions": {
+                    "page_view": "User viewed a page",
+                    "view_content": "User viewed specific content (product, article, etc.)",
+                    "select_content": "User selected or clicked on content (article, video, etc.)",
+                    "select_item": "User selected a specific product or item from a list",
+                    "search": "User performed a search",
+                    "share": "User shared content via social or messaging",
+                    "add_to_cart": "User added an item to cart",
+                    "remove_from_cart": "User removed an item from cart",
+                    "viewed_cart": "User viewed their shopping cart",
+                    "add_to_wishlist": "User added an item to a wishlist",
+                    "initiate_checkout": "User started checkout process",
+                    "add_payment_info": "User added payment information",
+                    "purchase": "User completed a purchase",
+                    "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                    "lead": "User expressed interest (form submission, signup, etc.)",
+                    "qualify_lead": "Lead qualified by sales or scoring criteria",
+                    "close_convert_lead": "Lead converted to a customer or closed deal",
+                    "disqualify_lead": "Lead disqualified or marked as not viable",
+                    "complete_registration": "User completed account registration",
+                    "subscribe": "User subscribed to a service or newsletter",
+                    "start_trial": "User started a free trial",
+                    "app_install": "User installed an application",
+                    "app_launch": "User launched an application",
+                    "contact": "User initiated contact (call, message, etc.)",
+                    "schedule": "User scheduled an appointment or event",
+                    "donate": "User made a donation",
+                    "submit_application": "User submitted an application (loan, job, etc.)",
+                    "custom": "Custom event type (specify in custom_event_name)"
+                  }
+                }
+              },
+              "action_source": {
+                "title": "Action Source",
+                "description": "Type of event source (website pixel, app SDK, in-store, etc.)",
+                "type": "string",
+                "enum": [
+                  "website",
+                  "app",
+                  "offline",
+                  "phone_call",
+                  "chat",
+                  "email",
+                  "in_store",
+                  "system_generated",
+                  "other"
+                ],
+                "enumDescriptions": {
+                  "website": "Event occurred on a website",
+                  "app": "Event occurred in a mobile or desktop app",
+                  "offline": "Event occurred offline (imported data)",
+                  "phone_call": "Event originated from a phone call",
+                  "chat": "Event originated from a chat conversation",
+                  "email": "Event originated from an email interaction",
+                  "in_store": "Event occurred at a physical retail location",
+                  "system_generated": "Event generated by an automated system",
+                  "other": "Other source (specify in ext)"
+                }
+              },
+              "managed_by": {
+                "type": "string",
+                "enum": [
+                  "buyer",
+                  "seller"
+                ],
+                "description": "Who manages this event source. 'buyer' = configured via this sync. 'seller' = always-on, managed by the seller (e.g. Amazon sales attribution for Amazon advertisers)."
+              },
+              "setup": {
+                "type": "object",
+                "description": "Implementation details for activating this event source (e.g. JavaScript tag, pixel URL)",
+                "properties": {
+                  "snippet": {
+                    "type": "string",
+                    "description": "Code snippet to place on the site (JavaScript, HTML pixel, etc.)"
+                  },
+                  "snippet_type": {
+                    "type": "string",
+                    "enum": [
+                      "javascript",
+                      "html",
+                      "pixel_url",
+                      "server_only"
+                    ],
+                    "description": "Type of implementation. 'server_only' means no client-side tag is needed."
+                  },
+                  "instructions": {
+                    "type": "string",
+                    "description": "Human/agent-readable setup instructions"
+                  }
+                },
+                "additionalProperties": true
+              },
+              "action": {
+                "type": "string",
+                "enum": [
+                  "created",
+                  "updated",
+                  "unchanged",
+                  "deleted",
+                  "failed"
+                ],
+                "description": "Action taken for this event source"
+              },
+              "health": {
+                "title": "Event Source Health",
+                "description": "Health assessment for this event source. Reflects event volume, data quality, and parameter completeness. Sellers that support health scoring include this on every source (buyer-managed and seller-managed). Absent when the seller does not evaluate event source health.",
+                "type": "object",
+                "properties": {
+                  "status": {
+                    "title": "Assessment Status",
+                    "description": "Overall health status. Use this for cross-seller decisions \u2014 do not rely on detail.score for comparability.",
+                    "type": "string",
+                    "enum": [
+                      "insufficient",
+                      "minimum",
+                      "good",
+                      "excellent"
+                    ],
+                    "enumDescriptions": {
+                      "insufficient": "Setup incomplete or event quality too low \u2014 optimization cannot run",
+                      "minimum": "Functional but data quality limits optimization effectiveness",
+                      "good": "Meets quality thresholds for most optimization goals",
+                      "excellent": "Exceeds quality thresholds across all dimensions"
+                    }
+                  },
+                  "detail": {
+                    "type": "object",
+                    "description": "Seller-specific scoring detail. Only present when the seller has a native quality score to relay. Buyer agents should use status (not detail) for cross-seller decisions. Detail is supplementary context for human review or advanced diagnostics.",
+                    "properties": {
+                      "score": {
+                        "type": "number",
+                        "minimum": 0,
+                        "description": "Seller-defined quality score. Scale varies by seller \u2014 only compare within the same seller."
+                      },
+                      "max_score": {
+                        "type": "number",
+                        "minimum": 1,
+                        "description": "Maximum possible score on this seller's scale."
+                      },
+                      "label": {
+                        "type": "string",
+                        "description": "Seller's name for this score (e.g., 'Event Quality Score', 'Event Match Quality')."
+                      }
+                    },
+                    "required": [
+                      "score",
+                      "max_score"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "match_rate": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Fraction of events from this source that the seller successfully matched to ad interactions (0.0-1.0). Low match rates indicate weak user_match identifiers. Absent when the seller does not compute match rates."
+                  },
+                  "last_event_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "ISO 8601 timestamp of the most recent event received from this source. Absent when no events have been received."
+                  },
+                  "evaluated_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "ISO 8601 timestamp of when this health assessment was computed. When health is derived from reporting data, this may lag real-time. Buyer agents can use this to decide whether to trust stale assessments or re-request."
+                  },
+                  "events_received_24h": {
+                    "type": "integer",
+                    "minimum": 0,
+                    "description": "Number of events received from this source in the last 24 hours. Zero indicates the source is configured but not firing."
+                  },
+                  "issues": {
+                    "type": "array",
+                    "description": "Actionable issues detected with this event source. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.",
+                    "items": {
+                      "title": "Diagnostic Issue",
+                      "description": "An actionable issue detected during a health or readiness assessment. Used by event source health and measurement readiness to surface problems and recommendations.",
+                      "type": "object",
+                      "properties": {
+                        "severity": {
+                          "type": "string",
+                          "enum": [
+                            "error",
+                            "warning",
+                            "info"
+                          ],
+                          "description": "'error': blocks optimization until resolved. 'warning': optimization works but effectiveness is reduced. 'info': suggestion for improvement."
+                        },
+                        "message": {
+                          "type": "string",
+                          "description": "Human/agent-readable description of the issue and how to resolve it."
+                        }
+                      },
+                      "required": [
+                        "severity",
+                        "message"
+                      ],
+                      "additionalProperties": true
+                    }
+                  }
+                },
+                "required": [
+                  "status"
+                ],
+                "additionalProperties": true
+              },
+              "errors": {
+                "type": "array",
+                "description": "Errors for this event source (only present when action='failed')",
+                "items": {
+                  "title": "Error",
+                  "description": "Standard error structure for task-specific errors and warnings",
+                  "type": "object",
+                  "properties": {
+                    "code": {
+                      "type": "string",
+                      "minLength": 1,
+                      "maxLength": 64,
+                      "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+                    },
+                    "message": {
+                      "type": "string",
+                      "description": "Human-readable error message"
+                    },
+                    "field": {
+                      "type": "string",
+                      "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+                    },
+                    "suggestion": {
+                      "type": "string",
+                      "description": "Suggested fix for the error"
+                    },
+                    "retry_after": {
+                      "type": "number",
+                      "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                      "minimum": 1,
+                      "maximum": 3600
+                    },
+                    "details": {
+                      "type": "object",
+                      "description": "Additional task-specific error details",
+                      "additionalProperties": true
+                    },
+                    "recovery": {
+                      "type": "string",
+                      "enum": [
+                        "transient",
+                        "correctable",
+                        "terminal"
+                      ],
+                      "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "message"
+                  ],
+                  "additionalProperties": true
+                }
+              }
+            },
+            "required": [
+              "event_source_id",
+              "action"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "event_sources"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "SyncEventSourcesError",
+      "description": "Error response - operation failed completely",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors that prevented processing",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "event_sources"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.427Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/update-media-buy-request.json b/schemas/cache/bundled/media-buy/update-media-buy-request.json
new file mode 100644
index 000000000..58b865cf6
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/update-media-buy-request.json
@@ -0,0 +1,16959 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Media Buy Request",
+  "description": "Request parameters for updating campaign and package settings",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account that owns this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts. Required for governance checks and account resolution.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "Seller's ID of the media buy to update"
+    },
+    "revision": {
+      "type": "integer",
+      "description": "Expected current revision for optimistic concurrency. When provided, sellers MUST reject the update with CONFLICT if the media buy's current revision does not match. Obtain from get_media_buys or the most recent update response.",
+      "minimum": 1
+    },
+    "paused": {
+      "type": "boolean",
+      "description": "Pause/resume the entire media buy (true = paused, false = active)"
+    },
+    "canceled": {
+      "type": "boolean",
+      "description": "Cancel the entire media buy. Cancellation is irreversible \u2014 canceled media buys cannot be reactivated. Sellers MAY reject with NOT_CANCELLABLE if the media buy cannot be canceled in its current state.",
+      "const": true
+    },
+    "cancellation_reason": {
+      "type": "string",
+      "description": "Reason for cancellation. Sellers SHOULD store this and return it in subsequent get_media_buys responses.",
+      "maxLength": 500
+    },
+    "start_time": {
+      "title": "Start Timing",
+      "description": "Campaign start timing: 'asap' or ISO 8601 date-time",
+      "oneOf": [
+        {
+          "type": "string",
+          "const": "asap",
+          "description": "Start campaign as soon as possible"
+        },
+        {
+          "type": "string",
+          "format": "date-time",
+          "description": "Scheduled start date/time in ISO 8601 format"
+        }
+      ]
+    },
+    "end_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "New end date/time in ISO 8601 format"
+    },
+    "packages": {
+      "type": "array",
+      "description": "Package-specific updates for existing packages",
+      "items": {
+        "title": "Package Update",
+        "description": "Package update configuration for update_media_buy. Identifies package by package_id and specifies fields to modify. Fields not present are left unchanged. Note: product_id, format_ids, and pricing_option_id cannot be changed after creation.",
+        "type": "object",
+        "properties": {
+          "package_id": {
+            "type": "string",
+            "description": "Seller's ID of package to update"
+          },
+          "budget": {
+            "type": "number",
+            "description": "Updated budget allocation for this package in the currency specified by the pricing option",
+            "minimum": 0
+          },
+          "pacing": {
+            "title": "Pacing",
+            "description": "Budget pacing strategy",
+            "type": "string",
+            "enum": [
+              "even",
+              "asap",
+              "front_loaded"
+            ],
+            "enumDescriptions": {
+              "even": "Allocate remaining budget evenly over remaining campaign duration (default)",
+              "asap": "Spend remaining budget as quickly as possible",
+              "front_loaded": "Allocate more remaining budget earlier in the remaining campaign period"
+            }
+          },
+          "bid_price": {
+            "type": "number",
+            "description": "Updated bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            "minimum": 0
+          },
+          "impressions": {
+            "type": "number",
+            "description": "Updated impression goal for this package",
+            "minimum": 0
+          },
+          "start_time": {
+            "type": "string",
+            "format": "date-time",
+            "not": {
+              "const": "asap"
+            },
+            "description": "Updated flight start date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+          },
+          "end_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "Updated flight end date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+          },
+          "paused": {
+            "type": "boolean",
+            "description": "Pause/resume specific package (true = paused, false = active)"
+          },
+          "canceled": {
+            "type": "boolean",
+            "description": "Cancel this specific package. Cancellation is irreversible \u2014 canceled packages stop delivery and cannot be reactivated. Sellers MAY reject with NOT_CANCELLABLE.",
+            "const": true
+          },
+          "cancellation_reason": {
+            "type": "string",
+            "description": "Reason for canceling this package.",
+            "maxLength": 500
+          },
+          "catalogs": {
+            "type": "array",
+            "description": "Replace the catalogs this package promotes. Uses replacement semantics \u2014 the provided array replaces the current list. Omit to leave catalogs unchanged.",
+            "items": {
+              "title": "Catalog",
+              "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+              "type": "object",
+              "properties": {
+                "catalog_id": {
+                  "type": "string",
+                  "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                },
+                "type": {
+                  "title": "Catalog Type",
+                  "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                  "type": "string",
+                  "enum": [
+                    "offering",
+                    "product",
+                    "inventory",
+                    "store",
+                    "promotion",
+                    "hotel",
+                    "flight",
+                    "job",
+                    "vehicle",
+                    "real_estate",
+                    "education",
+                    "destination",
+                    "app"
+                  ]
+                },
+                "url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                },
+                "feed_format": {
+                  "title": "Feed Format",
+                  "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                  "type": "string",
+                  "enum": [
+                    "google_merchant_center",
+                    "facebook_catalog",
+                    "shopify",
+                    "linkedin_jobs",
+                    "custom"
+                  ]
+                },
+                "update_frequency": {
+                  "title": "Update Frequency",
+                  "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                  "type": "string",
+                  "enum": [
+                    "realtime",
+                    "hourly",
+                    "daily",
+                    "weekly"
+                  ]
+                },
+                "items": {
+                  "type": "array",
+                  "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                  "items": {
+                    "type": "object"
+                  },
+                  "minItems": 1
+                },
+                "ids": {
+                  "type": "array",
+                  "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "gtins": {
+                  "type": "array",
+                  "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                  "items": {
+                    "type": "string",
+                    "pattern": "^[0-9]{8,14}$"
+                  },
+                  "minItems": 1
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "category": {
+                  "type": "string",
+                  "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                },
+                "query": {
+                  "type": "string",
+                  "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                },
+                "conversion_events": {
+                  "type": "array",
+                  "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                  "items": {
+                    "title": "Event Type",
+                    "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                    "type": "string",
+                    "enum": [
+                      "page_view",
+                      "view_content",
+                      "select_content",
+                      "select_item",
+                      "search",
+                      "share",
+                      "add_to_cart",
+                      "remove_from_cart",
+                      "viewed_cart",
+                      "add_to_wishlist",
+                      "initiate_checkout",
+                      "add_payment_info",
+                      "purchase",
+                      "refund",
+                      "lead",
+                      "qualify_lead",
+                      "close_convert_lead",
+                      "disqualify_lead",
+                      "complete_registration",
+                      "subscribe",
+                      "start_trial",
+                      "app_install",
+                      "app_launch",
+                      "contact",
+                      "schedule",
+                      "donate",
+                      "submit_application",
+                      "custom"
+                    ],
+                    "enumDescriptions": {
+                      "page_view": "User viewed a page",
+                      "view_content": "User viewed specific content (product, article, etc.)",
+                      "select_content": "User selected or clicked on content (article, video, etc.)",
+                      "select_item": "User selected a specific product or item from a list",
+                      "search": "User performed a search",
+                      "share": "User shared content via social or messaging",
+                      "add_to_cart": "User added an item to cart",
+                      "remove_from_cart": "User removed an item from cart",
+                      "viewed_cart": "User viewed their shopping cart",
+                      "add_to_wishlist": "User added an item to a wishlist",
+                      "initiate_checkout": "User started checkout process",
+                      "add_payment_info": "User added payment information",
+                      "purchase": "User completed a purchase",
+                      "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                      "lead": "User expressed interest (form submission, signup, etc.)",
+                      "qualify_lead": "Lead qualified by sales or scoring criteria",
+                      "close_convert_lead": "Lead converted to a customer or closed deal",
+                      "disqualify_lead": "Lead disqualified or marked as not viable",
+                      "complete_registration": "User completed account registration",
+                      "subscribe": "User subscribed to a service or newsletter",
+                      "start_trial": "User started a free trial",
+                      "app_install": "User installed an application",
+                      "app_launch": "User launched an application",
+                      "contact": "User initiated contact (call, message, etc.)",
+                      "schedule": "User scheduled an appointment or event",
+                      "donate": "User made a donation",
+                      "submit_application": "User submitted an application (loan, job, etc.)",
+                      "custom": "Custom event type (specify in custom_event_name)"
+                    }
+                  },
+                  "minItems": 1,
+                  "uniqueItems": true
+                },
+                "content_id_type": {
+                  "title": "Content ID Type",
+                  "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                  "type": "string",
+                  "enum": [
+                    "sku",
+                    "gtin",
+                    "offering_id",
+                    "job_id",
+                    "hotel_id",
+                    "flight_id",
+                    "vehicle_id",
+                    "listing_id",
+                    "store_id",
+                    "program_id",
+                    "destination_id",
+                    "app_id"
+                  ]
+                },
+                "feed_field_mappings": {
+                  "type": "array",
+                  "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                  "items": {
+                    "title": "Catalog Field Mapping",
+                    "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                    "type": "object",
+                    "properties": {
+                      "feed_field": {
+                        "type": "string",
+                        "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                      },
+                      "catalog_field": {
+                        "type": "string",
+                        "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                      },
+                      "asset_group_id": {
+                        "type": "string",
+                        "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                      },
+                      "value": {
+                        "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                      },
+                      "transform": {
+                        "type": "string",
+                        "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                        "enum": [
+                          "date",
+                          "divide",
+                          "boolean",
+                          "split"
+                        ]
+                      },
+                      "format": {
+                        "type": "string",
+                        "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                      },
+                      "timezone": {
+                        "type": "string",
+                        "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                      },
+                      "by": {
+                        "type": "number",
+                        "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                        "exclusiveMinimum": 0
+                      },
+                      "separator": {
+                        "type": "string",
+                        "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                        "default": ","
+                      },
+                      "default": {
+                        "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "allOf": [
+                      {
+                        "not": {
+                          "required": [
+                            "feed_field",
+                            "value"
+                          ]
+                        }
+                      },
+                      {
+                        "not": {
+                          "required": [
+                            "catalog_field",
+                            "asset_group_id"
+                          ]
+                        }
+                      }
+                    ],
+                    "additionalProperties": true,
+                    "examples": [
+                      {
+                        "description": "Simple field rename",
+                        "data": {
+                          "feed_field": "hotel_name",
+                          "catalog_field": "name"
+                        }
+                      },
+                      {
+                        "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                        "data": {
+                          "feed_field": "available_from",
+                          "catalog_field": "valid_from",
+                          "transform": "date",
+                          "format": "YYYYMMDD",
+                          "timezone": "UTC"
+                        }
+                      },
+                      {
+                        "description": "Divide cents to dollars",
+                        "data": {
+                          "feed_field": "price_cents",
+                          "catalog_field": "price.amount",
+                          "transform": "divide",
+                          "by": 100
+                        }
+                      },
+                      {
+                        "description": "Static literal injection \u2014 currency not in feed",
+                        "data": {
+                          "catalog_field": "price.currency",
+                          "value": "USD"
+                        }
+                      },
+                      {
+                        "description": "Image URL assigned to typed asset pool",
+                        "data": {
+                          "feed_field": "primary_photo_url",
+                          "asset_group_id": "images_landscape"
+                        }
+                      },
+                      {
+                        "description": "Vertical photo URL assigned to vertical pool",
+                        "data": {
+                          "feed_field": "portrait_photo_url",
+                          "asset_group_id": "images_vertical"
+                        }
+                      },
+                      {
+                        "description": "Split comma-separated tags to array",
+                        "data": {
+                          "feed_field": "amenity_list",
+                          "catalog_field": "amenities",
+                          "transform": "split",
+                          "separator": ","
+                        }
+                      },
+                      {
+                        "description": "Boolean coercion with default",
+                        "data": {
+                          "feed_field": "is_available",
+                          "catalog_field": "available",
+                          "transform": "boolean",
+                          "default": false
+                        }
+                      }
+                    ]
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "type"
+              ],
+              "additionalProperties": true,
+              "examples": [
+                {
+                  "description": "Synced product catalog from Google Merchant Center",
+                  "data": {
+                    "catalog_id": "gmc-primary",
+                    "name": "Primary Product Feed",
+                    "type": "product",
+                    "url": "https://feeds.acmecorp.com/products.xml",
+                    "feed_format": "google_merchant_center",
+                    "update_frequency": "daily"
+                  }
+                },
+                {
+                  "description": "Inventory feed for store-level stock data",
+                  "data": {
+                    "catalog_id": "store-inventory",
+                    "name": "Store Inventory",
+                    "type": "inventory",
+                    "url": "https://feeds.acmecorp.com/inventory.json",
+                    "feed_format": "custom",
+                    "update_frequency": "hourly"
+                  }
+                },
+                {
+                  "description": "Store locator feed",
+                  "data": {
+                    "catalog_id": "retail-locations",
+                    "name": "Retail Locations",
+                    "type": "store",
+                    "url": "https://feeds.acmecorp.com/stores.json",
+                    "feed_format": "custom",
+                    "update_frequency": "weekly"
+                  }
+                },
+                {
+                  "description": "Promotional pricing feed",
+                  "data": {
+                    "catalog_id": "summer-sale",
+                    "name": "Summer Sale Promotions",
+                    "type": "promotion",
+                    "url": "https://feeds.acmecorp.com/promotions.json",
+                    "feed_format": "google_merchant_center",
+                    "update_frequency": "daily"
+                  }
+                },
+                {
+                  "description": "Inline offering catalog (no sync needed)",
+                  "data": {
+                    "type": "offering",
+                    "items": [
+                      {
+                        "offering_id": "summer-sale",
+                        "name": "Summer Sale",
+                        "landing_url": "https://acme.com/summer"
+                      }
+                    ]
+                  }
+                },
+                {
+                  "description": "Reference to a previously synced catalog by ID",
+                  "data": {
+                    "catalog_id": "gmc-primary",
+                    "type": "product",
+                    "ids": [
+                      "SKU-12345",
+                      "SKU-67890"
+                    ]
+                  }
+                },
+                {
+                  "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                  "data": {
+                    "type": "product",
+                    "gtins": [
+                      "00013000006040",
+                      "00013000006057"
+                    ],
+                    "content_id_type": "gtin",
+                    "conversion_events": [
+                      "purchase",
+                      "add_to_cart"
+                    ]
+                  }
+                },
+                {
+                  "description": "Inline store catalog with catchment areas",
+                  "data": {
+                    "catalog_id": "retail-locations",
+                    "name": "Retail Locations",
+                    "type": "store",
+                    "items": [
+                      {
+                        "store_id": "amsterdam-flagship",
+                        "name": "Amsterdam Flagship",
+                        "location": {
+                          "lat": 52.3676,
+                          "lng": 4.9041
+                        },
+                        "catchments": [
+                          {
+                            "catchment_id": "walk",
+                            "travel_time": {
+                              "value": 10,
+                              "unit": "min"
+                            },
+                            "transport_mode": "walking"
+                          },
+                          {
+                            "catchment_id": "drive",
+                            "travel_time": {
+                              "value": 15,
+                              "unit": "min"
+                            },
+                            "transport_mode": "driving"
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "optimization_goals": {
+            "type": "array",
+            "description": "Replace all optimization goals for this package. Uses replacement semantics \u2014 omit to leave goals unchanged.",
+            "items": {
+              "title": "Optimization Goal",
+              "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
+              "oneOf": [
+                {
+                  "type": "object",
+                  "description": "Optimize for a seller-tracked delivery metric. No event source required \u2014 the seller tracks these natively.",
+                  "properties": {
+                    "kind": {
+                      "type": "string",
+                      "const": "metric"
+                    },
+                    "metric": {
+                      "type": "string",
+                      "enum": [
+                        "clicks",
+                        "views",
+                        "completed_views",
+                        "viewed_seconds",
+                        "attention_seconds",
+                        "attention_score",
+                        "engagements",
+                        "follows",
+                        "saves",
+                        "profile_visits",
+                        "reach"
+                      ],
+                      "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+                    },
+                    "reach_unit": {
+                      "allOf": [
+                        {
+                          "title": "Reach Unit",
+                          "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                          "type": "string",
+                          "enum": [
+                            "individuals",
+                            "households",
+                            "devices",
+                            "accounts",
+                            "cookies",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                            "households": "Unique households or TV homes.",
+                            "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                            "accounts": "Unique logged-in accounts (platform-specific identity).",
+                            "cookies": "Unique browser cookies.",
+                            "custom": "Publisher-defined reach unit. Describe in ext."
+                          }
+                        }
+                      ],
+                      "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+                    },
+                    "target_frequency": {
+                      "type": "object",
+                      "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
+                      "properties": {
+                        "min": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1)."
+                        },
+                        "max": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point."
+                        },
+                        "window": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
+                        }
+                      },
+                      "required": [
+                        "window"
+                      ],
+                      "anyOf": [
+                        {
+                          "required": [
+                            "min"
+                          ]
+                        },
+                        {
+                          "required": [
+                            "max"
+                          ]
+                        }
+                      ],
+                      "additionalProperties": true
+                    },
+                    "view_duration_seconds": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies."
+                    },
+                    "target": {
+                      "description": "Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Target cost per unit of the metric (e.g., cost per click, cost per completed view).",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "cost_per"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target cost per metric unit in the buy currency"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Minimum per-impression rate for this metric. The metric defines the units: proportions for count metrics (e.g., 0.001 for 0.1% CTR, 0.70 for 70% viewability), seconds for duration metrics (e.g., 3.0 for 3s in view), or score for score metrics.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "threshold_rate"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score)."
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "priority": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "metric"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "description": "Optimize for advertiser-tracked conversion events. Requires event sources registered via sync_event_sources.",
+                  "properties": {
+                    "kind": {
+                      "type": "string",
+                      "const": "event"
+                    },
+                    "event_sources": {
+                      "type": "array",
+                      "description": "Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries \u2014 the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "event_source_id": {
+                            "type": "string",
+                            "minLength": 1,
+                            "description": "Event source to include (must be configured on this account via sync_event_sources)"
+                          },
+                          "event_type": {
+                            "title": "Event Type",
+                            "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "custom_event_name": {
+                            "type": "string",
+                            "description": "Required when event_type is 'custom'. Platform-specific name for the custom event."
+                          },
+                          "value_field": {
+                            "type": "string",
+                            "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' \u2014 sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism."
+                          },
+                          "value_factor": {
+                            "type": "number",
+                            "default": 1,
+                            "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics."
+                          }
+                        },
+                        "required": [
+                          "event_source_id",
+                          "event_type"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "minItems": 1
+                    },
+                    "target": {
+                      "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget \u2014 regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Target cost per conversion event (after deduplication across event_sources).",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "cost_per"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target cost per event in the buy currency"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Target return per unit of ad spend, calculated as sum(value_field * value_factor) / spend across all deduplicated events. Requires value_field on at least one event_sources entry.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "per_ad_spend"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Maximize total conversion value within budget, without a specific return ratio target. Steers spend toward higher-value conversions rather than maximizing conversion count. Requires value_field on at least one event_sources entry.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "maximize_value"
+                            }
+                          },
+                          "required": [
+                            "kind"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "attribution_window": {
+                      "type": "object",
+                      "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
+                      "properties": {
+                        "post_click": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
+                        },
+                        "post_view": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
+                        }
+                      },
+                      "required": [
+                        "post_click"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "priority": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "event_sources"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "targeting_overlay": {
+            "title": "Targeting Overlay",
+            "description": "Targeting overlay to apply to this package. Uses replacement semantics \u2014 the full overlay replaces the previous one. Omit to leave targeting unchanged. For keyword and negative keyword updates, prefer the incremental operations (keyword_targets_add, keyword_targets_remove, negative_keywords_add, negative_keywords_remove) which avoid replacing the full overlay. Sellers SHOULD return a validation error if targeting_overlay.keyword_targets is present in the same request as keyword_targets_add or keyword_targets_remove, and likewise for negative_keywords.",
+            "type": "object",
+            "properties": {
+              "geo_countries": {
+                "type": "array",
+                "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "geo_countries_exclude": {
+                "type": "array",
+                "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "geo_regions": {
+                "type": "array",
+                "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                },
+                "minItems": 1
+              },
+              "geo_regions_exclude": {
+                "type": "array",
+                "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                },
+                "minItems": 1
+              },
+              "geo_metros": {
+                "type": "array",
+                "description": "Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Metro Area System",
+                      "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                      "type": "string",
+                      "enum": [
+                        "nielsen_dma",
+                        "uk_itl1",
+                        "uk_itl2",
+                        "eurostat_nuts2",
+                        "custom"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_metros_exclude": {
+                "type": "array",
+                "description": "Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Metro Area System",
+                      "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                      "type": "string",
+                      "enum": [
+                        "nielsen_dma",
+                        "uk_itl1",
+                        "uk_itl2",
+                        "eurostat_nuts2",
+                        "custom"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_postal_areas": {
+                "type": "array",
+                "description": "Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Postal Code System",
+                      "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                      "type": "string",
+                      "enum": [
+                        "us_zip",
+                        "us_zip_plus_four",
+                        "gb_outward",
+                        "gb_full",
+                        "ca_fsa",
+                        "ca_full",
+                        "de_plz",
+                        "fr_code_postal",
+                        "au_postcode",
+                        "ch_plz",
+                        "at_plz"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_postal_areas_exclude": {
+                "type": "array",
+                "description": "Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Postal Code System",
+                      "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                      "type": "string",
+                      "enum": [
+                        "us_zip",
+                        "us_zip_plus_four",
+                        "gb_outward",
+                        "gb_full",
+                        "ca_fsa",
+                        "ca_full",
+                        "de_plz",
+                        "fr_code_postal",
+                        "au_postcode",
+                        "ch_plz",
+                        "at_plz"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "daypart_targets": {
+                "type": "array",
+                "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
+                "items": {
+                  "title": "Daypart Target",
+                  "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+                  "type": "object",
+                  "properties": {
+                    "days": {
+                      "type": "array",
+                      "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
+                      "items": {
+                        "title": "Day of Week",
+                        "description": "Days of the week for daypart targeting",
+                        "type": "string",
+                        "enum": [
+                          "monday",
+                          "tuesday",
+                          "wednesday",
+                          "thursday",
+                          "friday",
+                          "saturday",
+                          "sunday"
+                        ]
+                      },
+                      "minItems": 1
+                    },
+                    "start_hour": {
+                      "type": "integer",
+                      "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+                      "minimum": 0,
+                      "maximum": 23
+                    },
+                    "end_hour": {
+                      "type": "integer",
+                      "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
+                      "minimum": 1,
+                      "maximum": 24
+                    },
+                    "label": {
+                      "type": "string",
+                      "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+                    }
+                  },
+                  "required": [
+                    "days",
+                    "start_hour",
+                    "end_hour"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "axe_include_segment": {
+                "type": "string",
+                "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
+                "deprecated": true
+              },
+              "axe_exclude_segment": {
+                "type": "string",
+                "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
+                "deprecated": true
+              },
+              "audience_include": {
+                "type": "array",
+                "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              },
+              "audience_exclude": {
+                "type": "array",
+                "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              },
+              "frequency_cap": {
+                "title": "Frequency Cap",
+                "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
+                "type": "object",
+                "properties": {
+                  "suppress": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+                  },
+                  "suppress_minutes": {
+                    "type": "number",
+                    "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+                    "minimum": 0
+                  },
+                  "max_impressions": {
+                    "type": "integer",
+                    "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+                    "minimum": 1
+                  },
+                  "per": {
+                    "allOf": [
+                      {
+                        "title": "Reach Unit",
+                        "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                        "type": "string",
+                        "enum": [
+                          "individuals",
+                          "households",
+                          "devices",
+                          "accounts",
+                          "cookies",
+                          "custom"
+                        ],
+                        "enumDescriptions": {
+                          "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                          "households": "Unique households or TV homes.",
+                          "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                          "accounts": "Unique logged-in accounts (platform-specific identity).",
+                          "cookies": "Unique browser cookies.",
+                          "custom": "Publisher-defined reach unit. Describe in ext."
+                        }
+                      }
+                    ],
+                    "description": "Entity granularity for impression counting. Required when max_impressions is set."
+                  },
+                  "window": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+                  }
+                },
+                "anyOf": [
+                  {
+                    "required": [
+                      "suppress"
+                    ]
+                  },
+                  {
+                    "required": [
+                      "suppress_minutes"
+                    ]
+                  },
+                  {
+                    "required": [
+                      "max_impressions"
+                    ]
+                  }
+                ],
+                "dependencies": {
+                  "max_impressions": [
+                    "per",
+                    "window"
+                  ],
+                  "per": [
+                    "max_impressions"
+                  ],
+                  "window": [
+                    "max_impressions"
+                  ]
+                },
+                "additionalProperties": true
+              },
+              "property_list": {
+                "title": "Property List Reference",
+                "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the property list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the property list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "collection_list": {
+                "title": "Collection List Reference",
+                "description": "Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the collection list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the collection list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "collection_list_exclude": {
+                "title": "Collection List Reference",
+                "description": "Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the collection list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the collection list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "age_restriction": {
+                "type": "object",
+                "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
+                "properties": {
+                  "min": {
+                    "type": "integer",
+                    "minimum": 13,
+                    "maximum": 99,
+                    "description": "Minimum age required"
+                  },
+                  "verification_required": {
+                    "type": "boolean",
+                    "default": false,
+                    "description": "Whether verified age (not inferred) is required for compliance"
+                  },
+                  "accepted_methods": {
+                    "type": "array",
+                    "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
+                    "items": {
+                      "title": "Age Verification Method",
+                      "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+                      "type": "string",
+                      "enum": [
+                        "facial_age_estimation",
+                        "id_document",
+                        "digital_id",
+                        "credit_card",
+                        "world_id"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "min"
+                ],
+                "additionalProperties": false
+              },
+              "device_platform": {
+                "type": "array",
+                "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
+                "items": {
+                  "title": "Device Platform",
+                  "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
+                  "type": "string",
+                  "enum": [
+                    "ios",
+                    "android",
+                    "windows",
+                    "macos",
+                    "linux",
+                    "chromeos",
+                    "tvos",
+                    "tizen",
+                    "webos",
+                    "fire_os",
+                    "roku_os",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "device_type": {
+                "type": "array",
+                "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+                "items": {
+                  "title": "Device Type",
+                  "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                  "type": "string",
+                  "enum": [
+                    "desktop",
+                    "mobile",
+                    "tablet",
+                    "ctv",
+                    "dooh",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "device_type_exclude": {
+                "type": "array",
+                "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+                "items": {
+                  "title": "Device Type",
+                  "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                  "type": "string",
+                  "enum": [
+                    "desktop",
+                    "mobile",
+                    "tablet",
+                    "ctv",
+                    "dooh",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "store_catchments": {
+                "type": "array",
+                "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "catalog_id": {
+                      "type": "string",
+                      "description": "Synced store-type catalog ID from sync_catalogs."
+                    },
+                    "store_ids": {
+                      "type": "array",
+                      "description": "Filter to specific stores within the catalog. Omit to target all stores.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    },
+                    "catchment_ids": {
+                      "type": "array",
+                      "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "catalog_id"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "geo_proximity": {
+                "type": "array",
+                "description": "Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics \u2014 a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "lat": {
+                      "type": "number",
+                      "minimum": -90,
+                      "maximum": 90,
+                      "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                    },
+                    "lng": {
+                      "type": "number",
+                      "minimum": -180,
+                      "maximum": 180,
+                      "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                    },
+                    "label": {
+                      "type": "string",
+                      "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area')."
+                    },
+                    "travel_time": {
+                      "type": "object",
+                      "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
+                      "properties": {
+                        "value": {
+                          "type": "number",
+                          "minimum": 1,
+                          "description": "Travel time limit."
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "min",
+                            "hr"
+                          ],
+                          "description": "Time unit."
+                        }
+                      },
+                      "required": [
+                        "value",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "transport_mode": {
+                      "title": "Transport Mode",
+                      "description": "Transportation mode for isochrone calculation. Required when travel_time is provided.",
+                      "type": "string",
+                      "enum": [
+                        "walking",
+                        "cycling",
+                        "driving",
+                        "public_transport"
+                      ],
+                      "enumDescriptions": {
+                        "walking": "Pedestrian travel on walkable paths and sidewalks",
+                        "cycling": "Bicycle travel on roads and cycle paths",
+                        "driving": "Motor vehicle travel on road networks",
+                        "public_transport": "Public transit including bus, rail, metro, and ferry"
+                      }
+                    },
+                    "radius": {
+                      "type": "object",
+                      "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
+                      "properties": {
+                        "value": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Radius distance."
+                        },
+                        "unit": {
+                          "title": "Distance Unit",
+                          "description": "Distance unit.",
+                          "type": "string",
+                          "enum": [
+                            "km",
+                            "mi",
+                            "m"
+                          ],
+                          "enumDescriptions": {
+                            "km": "Kilometers",
+                            "mi": "Miles",
+                            "m": "Meters"
+                          }
+                        }
+                      },
+                      "required": [
+                        "value",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "geometry": {
+                      "type": "object",
+                      "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "enum": [
+                            "Polygon",
+                            "MultiPolygon"
+                          ],
+                          "description": "GeoJSON geometry type."
+                        },
+                        "coordinates": {
+                          "type": "array",
+                          "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "coordinates"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "oneOf": [
+                    {
+                      "required": [
+                        "lat",
+                        "lng",
+                        "travel_time",
+                        "transport_mode"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "radius"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "geometry"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "required": [
+                        "lat",
+                        "lng",
+                        "radius"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "travel_time"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "geometry"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "required": [
+                        "geometry"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "travel_time"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "radius"
+                            ]
+                          }
+                        ]
+                      }
+                    }
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "language": {
+                "type": "array",
+                "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[a-z]{2}$"
+                },
+                "minItems": 1
+              },
+              "keyword_targets": {
+                "type": "array",
+                "description": "Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) \u2014 the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "keyword": {
+                      "type": "string",
+                      "minLength": 1,
+                      "description": "The keyword to target"
+                    },
+                    "match_type": {
+                      "type": "string",
+                      "enum": [
+                        "broad",
+                        "phrase",
+                        "exact"
+                      ],
+                      "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly"
+                    },
+                    "bid_price": {
+                      "type": "number",
+                      "minimum": 0,
+                      "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies."
+                    }
+                  },
+                  "required": [
+                    "keyword",
+                    "match_type"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "negative_keywords": {
+                "type": "array",
+                "description": "Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "keyword": {
+                      "type": "string",
+                      "minLength": 1,
+                      "description": "The keyword to exclude"
+                    },
+                    "match_type": {
+                      "type": "string",
+                      "enum": [
+                        "broad",
+                        "phrase",
+                        "exact"
+                      ],
+                      "description": "Match type for exclusion"
+                    }
+                  },
+                  "required": [
+                    "keyword",
+                    "match_type"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              }
+            },
+            "additionalProperties": true
+          },
+          "keyword_targets_add": {
+            "type": "array",
+            "description": "Keyword targets to add or update on this package. Upserts by (keyword, match_type) identity: if the pair already exists, its bid_price is updated; if not, a new keyword target is added. Use targeting_overlay.keyword_targets in create_media_buy to set the initial list.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "keyword": {
+                  "type": "string",
+                  "minLength": 1,
+                  "description": "The keyword to target"
+                },
+                "match_type": {
+                  "type": "string",
+                  "enum": [
+                    "broad",
+                    "phrase",
+                    "exact"
+                  ],
+                  "description": "Match type for this keyword"
+                },
+                "bid_price": {
+                  "type": "number",
+                  "minimum": 0,
+                  "description": "Per-keyword bid price. Inherits currency and max_bid interpretation from the package's pricing option."
+                }
+              },
+              "required": [
+                "keyword",
+                "match_type"
+              ],
+              "additionalProperties": false
+            },
+            "minItems": 1
+          },
+          "keyword_targets_remove": {
+            "type": "array",
+            "description": "Keyword targets to remove from this package. Removes matching (keyword, match_type) pairs. If a specified pair is not present, sellers SHOULD treat it as a no-op for that entry.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "keyword": {
+                  "type": "string",
+                  "minLength": 1,
+                  "description": "The keyword to stop targeting"
+                },
+                "match_type": {
+                  "type": "string",
+                  "enum": [
+                    "broad",
+                    "phrase",
+                    "exact"
+                  ],
+                  "description": "Match type to remove"
+                }
+              },
+              "required": [
+                "keyword",
+                "match_type"
+              ],
+              "additionalProperties": false
+            },
+            "minItems": 1
+          },
+          "negative_keywords_add": {
+            "type": "array",
+            "description": "Negative keywords to add to this package. Appends to the existing negative keyword list \u2014 does not replace it. If a keyword+match_type pair already exists, sellers SHOULD treat it as a no-op for that entry. Use targeting_overlay.negative_keywords in create_media_buy to set the initial list.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "keyword": {
+                  "type": "string",
+                  "minLength": 1,
+                  "description": "The keyword to exclude"
+                },
+                "match_type": {
+                  "type": "string",
+                  "enum": [
+                    "broad",
+                    "phrase",
+                    "exact"
+                  ],
+                  "description": "Match type for exclusion"
+                }
+              },
+              "required": [
+                "keyword",
+                "match_type"
+              ],
+              "additionalProperties": false
+            },
+            "minItems": 1
+          },
+          "negative_keywords_remove": {
+            "type": "array",
+            "description": "Negative keywords to remove from this package. Removes matching keyword+match_type pairs from the existing list. If a specified pair is not present, sellers SHOULD treat it as a no-op for that entry.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "keyword": {
+                  "type": "string",
+                  "minLength": 1,
+                  "description": "The keyword to stop excluding"
+                },
+                "match_type": {
+                  "type": "string",
+                  "enum": [
+                    "broad",
+                    "phrase",
+                    "exact"
+                  ],
+                  "description": "Match type to remove"
+                }
+              },
+              "required": [
+                "keyword",
+                "match_type"
+              ],
+              "additionalProperties": false
+            },
+            "minItems": 1
+          },
+          "creative_assignments": {
+            "type": "array",
+            "description": "Replace creative assignments for this package with optional weights and placement targeting. Uses replacement semantics - omit to leave assignments unchanged.",
+            "items": {
+              "title": "Creative Assignment",
+              "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
+              "type": "object",
+              "properties": {
+                "creative_id": {
+                  "type": "string",
+                  "description": "Unique identifier for the creative"
+                },
+                "weight": {
+                  "type": "number",
+                  "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+                  "minimum": 0,
+                  "maximum": 100
+                },
+                "placement_ids": {
+                  "type": "array",
+                  "description": "Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "creative_id"
+              ],
+              "additionalProperties": true
+            }
+          },
+          "creatives": {
+            "type": "array",
+            "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
+            "items": {
+              "title": "Creative Asset",
+              "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party snippets",
+              "type": "object",
+              "properties": {
+                "creative_id": {
+                  "type": "string",
+                  "description": "Unique identifier for the creative"
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable creative name"
+                },
+                "format_id": {
+                  "title": "Format ID",
+                  "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.",
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                    },
+                    "id": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$",
+                      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "duration_ms": {
+                      "type": "number",
+                      "minimum": 1,
+                      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                    }
+                  },
+                  "required": [
+                    "agent_url",
+                    "id"
+                  ],
+                  "additionalProperties": true,
+                  "dependencies": {
+                    "width": [
+                      "height"
+                    ],
+                    "height": [
+                      "width"
+                    ]
+                  }
+                },
+                "assets": {
+                  "type": "object",
+                  "description": "Assets required by the format, keyed by asset_id",
+                  "patternProperties": {
+                    "^[a-z0-9_]+$": {
+                      "anyOf": [
+                        {
+                          "title": "Image Asset",
+                          "description": "Image asset with URL and dimensions",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the image asset"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels"
+                            },
+                            "format": {
+                              "type": "string",
+                              "description": "Image file format (jpg, png, gif, webp, etc.)"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alternative text for accessibility",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "width",
+                            "height"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Video Asset",
+                          "description": "Video asset with URL and technical specifications including audio track properties",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the video asset"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds",
+                              "minimum": 1
+                            },
+                            "file_size_bytes": {
+                              "type": "integer",
+                              "description": "File size in bytes",
+                              "minimum": 1
+                            },
+                            "container_format": {
+                              "type": "string",
+                              "description": "Video container format (mp4, webm, mov, etc.)"
+                            },
+                            "video_codec": {
+                              "type": "string",
+                              "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                            },
+                            "video_bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Video stream bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "frame_rate": {
+                              "type": "string",
+                              "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                            },
+                            "frame_rate_type": {
+                              "type": "string",
+                              "enum": [
+                                "constant",
+                                "variable"
+                              ],
+                              "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                            },
+                            "scan_type": {
+                              "type": "string",
+                              "enum": [
+                                "progressive",
+                                "interlaced"
+                              ],
+                              "description": "Scan type of the video"
+                            },
+                            "color_space": {
+                              "type": "string",
+                              "enum": [
+                                "rec709",
+                                "rec2020",
+                                "rec2100",
+                                "srgb",
+                                "dci_p3"
+                              ],
+                              "description": "Color space of the video"
+                            },
+                            "hdr_format": {
+                              "type": "string",
+                              "enum": [
+                                "sdr",
+                                "hdr10",
+                                "hdr10_plus",
+                                "hlg",
+                                "dolby_vision"
+                              ],
+                              "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                            },
+                            "chroma_subsampling": {
+                              "type": "string",
+                              "enum": [
+                                "4:2:0",
+                                "4:2:2",
+                                "4:4:4"
+                              ],
+                              "description": "Chroma subsampling format"
+                            },
+                            "video_bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                8,
+                                10,
+                                12
+                              ],
+                              "description": "Video bit depth"
+                            },
+                            "gop_interval_seconds": {
+                              "type": "number",
+                              "description": "GOP/keyframe interval in seconds"
+                            },
+                            "gop_type": {
+                              "type": "string",
+                              "enum": [
+                                "closed",
+                                "open"
+                              ],
+                              "description": "GOP structure type"
+                            },
+                            "moov_atom_position": {
+                              "type": "string",
+                              "enum": [
+                                "start",
+                                "end"
+                              ],
+                              "description": "Position of moov atom in MP4 container"
+                            },
+                            "has_audio": {
+                              "type": "boolean",
+                              "description": "Whether the video contains an audio track"
+                            },
+                            "audio_codec": {
+                              "type": "string",
+                              "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                            },
+                            "audio_sampling_rate_hz": {
+                              "type": "integer",
+                              "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                            },
+                            "audio_channels": {
+                              "type": "string",
+                              "enum": [
+                                "mono",
+                                "stereo",
+                                "5.1",
+                                "7.1"
+                              ],
+                              "description": "Audio channel configuration"
+                            },
+                            "audio_bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                16,
+                                24,
+                                32
+                              ],
+                              "description": "Audio bit depth"
+                            },
+                            "audio_bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Audio bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "audio_loudness_lufs": {
+                              "type": "number",
+                              "description": "Integrated loudness in LUFS"
+                            },
+                            "audio_true_peak_dbfs": {
+                              "type": "number",
+                              "description": "True peak level in dBFS"
+                            },
+                            "captions_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to captions file (WebVTT, SRT, etc.)",
+                              "x-accessibility": true
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the video content",
+                              "x-accessibility": true
+                            },
+                            "audio_description_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to audio description track for visually impaired users",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "width",
+                            "height"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Audio Asset",
+                          "description": "Audio asset with URL and technical specifications",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the audio asset"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds",
+                              "minimum": 0
+                            },
+                            "file_size_bytes": {
+                              "type": "integer",
+                              "description": "File size in bytes",
+                              "minimum": 1
+                            },
+                            "container_format": {
+                              "type": "string",
+                              "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                            },
+                            "codec": {
+                              "type": "string",
+                              "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                            },
+                            "sampling_rate_hz": {
+                              "type": "integer",
+                              "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                            },
+                            "channels": {
+                              "type": "string",
+                              "enum": [
+                                "mono",
+                                "stereo",
+                                "5.1",
+                                "7.1"
+                              ],
+                              "description": "Channel configuration"
+                            },
+                            "bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                16,
+                                24,
+                                32
+                              ],
+                              "description": "Bit depth"
+                            },
+                            "bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "loudness_lufs": {
+                              "type": "number",
+                              "description": "Integrated loudness in LUFS"
+                            },
+                            "true_peak_dbfs": {
+                              "type": "number",
+                              "description": "True peak level in dBFS"
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the audio content",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "VAST Asset",
+                          "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "url",
+                                  "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL endpoint that returns VAST XML"
+                                },
+                                "vast_version": {
+                                  "title": "VAST Version",
+                                  "description": "VAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "2.0",
+                                    "3.0",
+                                    "4.0",
+                                    "4.1",
+                                    "4.2"
+                                  ]
+                                },
+                                "vpaid_enabled": {
+                                  "type": "boolean",
+                                  "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected video duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "VAST Tracking Event",
+                                    "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "rewind",
+                                      "skip",
+                                      "playerExpand",
+                                      "playerCollapse",
+                                      "fullscreen",
+                                      "exitFullscreen",
+                                      "progress",
+                                      "notUsed",
+                                      "otherAdInteraction",
+                                      "interactiveStart",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "closeLinear",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this VAST tag"
+                                },
+                                "captions_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                  "x-accessibility": true
+                                },
+                                "audio_description_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to audio description track for visually impaired users",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "inline",
+                                  "description": "Discriminator indicating VAST is delivered as inline XML content"
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Inline VAST XML content"
+                                },
+                                "vast_version": {
+                                  "title": "VAST Version",
+                                  "description": "VAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "2.0",
+                                    "3.0",
+                                    "4.0",
+                                    "4.1",
+                                    "4.2"
+                                  ]
+                                },
+                                "vpaid_enabled": {
+                                  "type": "boolean",
+                                  "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected video duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "VAST Tracking Event",
+                                    "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "rewind",
+                                      "skip",
+                                      "playerExpand",
+                                      "playerCollapse",
+                                      "fullscreen",
+                                      "exitFullscreen",
+                                      "progress",
+                                      "notUsed",
+                                      "otherAdInteraction",
+                                      "interactiveStart",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "closeLinear",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this VAST tag"
+                                },
+                                "captions_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                  "x-accessibility": true
+                                },
+                                "audio_description_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to audio description track for visually impaired users",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "content"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Text Asset",
+                          "description": "Text content asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "Text content"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "Language code (e.g., 'en', 'es', 'fr')"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "URL Asset",
+                          "description": "URL reference asset",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL reference"
+                            },
+                            "url_type": {
+                              "title": "URL Asset Type",
+                              "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                              "type": "string",
+                              "enum": [
+                                "clickthrough",
+                                "tracker_pixel",
+                                "tracker_script"
+                              ]
+                            },
+                            "description": {
+                              "type": "string",
+                              "description": "Description of what this URL points to"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "HTML Asset",
+                          "description": "HTML content asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "HTML content"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "HTML version (e.g., 'HTML5')"
+                            },
+                            "accessibility": {
+                              "type": "object",
+                              "description": "Self-declared accessibility properties for this opaque creative",
+                              "x-accessibility": true,
+                              "properties": {
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Text alternative describing the creative content"
+                                },
+                                "keyboard_navigable": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative can be fully operated via keyboard"
+                                },
+                                "motion_control": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                },
+                                "screen_reader_tested": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative has been tested with screen readers"
+                                }
+                              }
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "JavaScript Asset",
+                          "description": "JavaScript code asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "JavaScript content"
+                            },
+                            "module_type": {
+                              "title": "JavaScript Module Type",
+                              "description": "JavaScript module type",
+                              "type": "string",
+                              "enum": [
+                                "esm",
+                                "commonjs",
+                                "script"
+                              ]
+                            },
+                            "accessibility": {
+                              "type": "object",
+                              "description": "Self-declared accessibility properties for this opaque creative",
+                              "x-accessibility": true,
+                              "properties": {
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Text alternative describing the creative content"
+                                },
+                                "keyboard_navigable": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative can be fully operated via keyboard"
+                                },
+                                "motion_control": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                },
+                                "screen_reader_tested": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative has been tested with screen readers"
+                                }
+                              }
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Webhook Asset",
+                          "description": "Webhook for server-side dynamic content rendering (DCO)",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Webhook URL to call for dynamic content"
+                            },
+                            "method": {
+                              "title": "HTTP Method",
+                              "description": "HTTP method",
+                              "type": "string",
+                              "enum": [
+                                "GET",
+                                "POST"
+                              ],
+                              "default": "POST"
+                            },
+                            "timeout_ms": {
+                              "type": "integer",
+                              "minimum": 10,
+                              "maximum": 5000,
+                              "default": 500,
+                              "description": "Maximum time to wait for response in milliseconds"
+                            },
+                            "supported_macros": {
+                              "type": "array",
+                              "items": {
+                                "oneOf": [
+                                  {
+                                    "title": "Universal Macro",
+                                    "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                    "type": "string",
+                                    "enum": [
+                                      "MEDIA_BUY_ID",
+                                      "PACKAGE_ID",
+                                      "CREATIVE_ID",
+                                      "CACHEBUSTER",
+                                      "TIMESTAMP",
+                                      "CLICK_URL",
+                                      "GDPR",
+                                      "GDPR_CONSENT",
+                                      "US_PRIVACY",
+                                      "GPP_STRING",
+                                      "GPP_SID",
+                                      "IP_ADDRESS",
+                                      "LIMIT_AD_TRACKING",
+                                      "DEVICE_TYPE",
+                                      "OS",
+                                      "OS_VERSION",
+                                      "DEVICE_MAKE",
+                                      "DEVICE_MODEL",
+                                      "USER_AGENT",
+                                      "APP_BUNDLE",
+                                      "APP_NAME",
+                                      "COUNTRY",
+                                      "REGION",
+                                      "CITY",
+                                      "ZIP",
+                                      "DMA",
+                                      "LAT",
+                                      "LONG",
+                                      "DEVICE_ID",
+                                      "DEVICE_ID_TYPE",
+                                      "DOMAIN",
+                                      "PAGE_URL",
+                                      "REFERRER",
+                                      "KEYWORDS",
+                                      "PLACEMENT_ID",
+                                      "FOLD_POSITION",
+                                      "AD_WIDTH",
+                                      "AD_HEIGHT",
+                                      "VIDEO_ID",
+                                      "VIDEO_TITLE",
+                                      "VIDEO_DURATION",
+                                      "VIDEO_CATEGORY",
+                                      "CONTENT_GENRE",
+                                      "CONTENT_RATING",
+                                      "PLAYER_WIDTH",
+                                      "PLAYER_HEIGHT",
+                                      "POD_POSITION",
+                                      "POD_SIZE",
+                                      "AD_BREAK_ID",
+                                      "STATION_ID",
+                                      "COLLECTION_NAME",
+                                      "INSTALLMENT_ID",
+                                      "AUDIO_DURATION",
+                                      "TMPX",
+                                      "AXEM",
+                                      "CATALOG_ID",
+                                      "SKU",
+                                      "GTIN",
+                                      "OFFERING_ID",
+                                      "JOB_ID",
+                                      "HOTEL_ID",
+                                      "FLIGHT_ID",
+                                      "VEHICLE_ID",
+                                      "LISTING_ID",
+                                      "STORE_ID",
+                                      "PROGRAM_ID",
+                                      "DESTINATION_ID",
+                                      "CREATIVE_VARIANT_ID",
+                                      "APP_ITEM_ID"
+                                    ],
+                                    "enumDescriptions": {
+                                      "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                      "PACKAGE_ID": "AdCP package identifier",
+                                      "CREATIVE_ID": "AdCP creative identifier",
+                                      "CACHEBUSTER": "Random number to prevent caching",
+                                      "TIMESTAMP": "Unix timestamp in milliseconds",
+                                      "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                      "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                      "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                      "US_PRIVACY": "US Privacy (CCPA) string",
+                                      "GPP_STRING": "Global Privacy Platform consent string",
+                                      "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                      "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                      "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                      "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                      "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                      "OS_VERSION": "OS version number",
+                                      "DEVICE_MAKE": "Device manufacturer",
+                                      "DEVICE_MODEL": "Device model identifier",
+                                      "USER_AGENT": "Full user agent string",
+                                      "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                      "APP_NAME": "Human-readable app name",
+                                      "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                      "REGION": "State/province/region code",
+                                      "CITY": "City name",
+                                      "ZIP": "Postal code",
+                                      "DMA": "Nielsen DMA code (US TV markets)",
+                                      "LAT": "Latitude coordinate",
+                                      "LONG": "Longitude coordinate",
+                                      "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                      "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                      "DOMAIN": "Domain where ad is shown",
+                                      "PAGE_URL": "Full page URL (encoded)",
+                                      "REFERRER": "HTTP referrer URL",
+                                      "KEYWORDS": "Page keywords (comma-separated)",
+                                      "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                      "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                      "AD_WIDTH": "Ad slot width in pixels",
+                                      "AD_HEIGHT": "Ad slot height in pixels",
+                                      "VIDEO_ID": "Content video identifier",
+                                      "VIDEO_TITLE": "Content video title",
+                                      "VIDEO_DURATION": "Content duration in seconds",
+                                      "VIDEO_CATEGORY": "IAB content category",
+                                      "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                      "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                      "PLAYER_WIDTH": "Video player width in pixels",
+                                      "PLAYER_HEIGHT": "Video player height in pixels",
+                                      "POD_POSITION": "Position within ad break",
+                                      "POD_SIZE": "Total ads in the ad break",
+                                      "AD_BREAK_ID": "Unique ad break identifier",
+                                      "STATION_ID": "Radio station or podcast identifier",
+                                      "COLLECTION_NAME": "Program or collection name",
+                                      "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                      "AUDIO_DURATION": "Audio content duration in seconds",
+                                      "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                      "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                      "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                      "SKU": "Product SKU identifier for the catalog item being rendered",
+                                      "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                      "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                      "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                      "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                      "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                      "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                      "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                      "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                      "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                      "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                      "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                      "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                    }
+                                  },
+                                  {
+                                    "type": "string",
+                                    "description": "Custom or publisher-specific macro name"
+                                  }
+                                ]
+                              },
+                              "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                            },
+                            "required_macros": {
+                              "type": "array",
+                              "items": {
+                                "oneOf": [
+                                  {
+                                    "title": "Universal Macro",
+                                    "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                    "type": "string",
+                                    "enum": [
+                                      "MEDIA_BUY_ID",
+                                      "PACKAGE_ID",
+                                      "CREATIVE_ID",
+                                      "CACHEBUSTER",
+                                      "TIMESTAMP",
+                                      "CLICK_URL",
+                                      "GDPR",
+                                      "GDPR_CONSENT",
+                                      "US_PRIVACY",
+                                      "GPP_STRING",
+                                      "GPP_SID",
+                                      "IP_ADDRESS",
+                                      "LIMIT_AD_TRACKING",
+                                      "DEVICE_TYPE",
+                                      "OS",
+                                      "OS_VERSION",
+                                      "DEVICE_MAKE",
+                                      "DEVICE_MODEL",
+                                      "USER_AGENT",
+                                      "APP_BUNDLE",
+                                      "APP_NAME",
+                                      "COUNTRY",
+                                      "REGION",
+                                      "CITY",
+                                      "ZIP",
+                                      "DMA",
+                                      "LAT",
+                                      "LONG",
+                                      "DEVICE_ID",
+                                      "DEVICE_ID_TYPE",
+                                      "DOMAIN",
+                                      "PAGE_URL",
+                                      "REFERRER",
+                                      "KEYWORDS",
+                                      "PLACEMENT_ID",
+                                      "FOLD_POSITION",
+                                      "AD_WIDTH",
+                                      "AD_HEIGHT",
+                                      "VIDEO_ID",
+                                      "VIDEO_TITLE",
+                                      "VIDEO_DURATION",
+                                      "VIDEO_CATEGORY",
+                                      "CONTENT_GENRE",
+                                      "CONTENT_RATING",
+                                      "PLAYER_WIDTH",
+                                      "PLAYER_HEIGHT",
+                                      "POD_POSITION",
+                                      "POD_SIZE",
+                                      "AD_BREAK_ID",
+                                      "STATION_ID",
+                                      "COLLECTION_NAME",
+                                      "INSTALLMENT_ID",
+                                      "AUDIO_DURATION",
+                                      "TMPX",
+                                      "AXEM",
+                                      "CATALOG_ID",
+                                      "SKU",
+                                      "GTIN",
+                                      "OFFERING_ID",
+                                      "JOB_ID",
+                                      "HOTEL_ID",
+                                      "FLIGHT_ID",
+                                      "VEHICLE_ID",
+                                      "LISTING_ID",
+                                      "STORE_ID",
+                                      "PROGRAM_ID",
+                                      "DESTINATION_ID",
+                                      "CREATIVE_VARIANT_ID",
+                                      "APP_ITEM_ID"
+                                    ],
+                                    "enumDescriptions": {
+                                      "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                      "PACKAGE_ID": "AdCP package identifier",
+                                      "CREATIVE_ID": "AdCP creative identifier",
+                                      "CACHEBUSTER": "Random number to prevent caching",
+                                      "TIMESTAMP": "Unix timestamp in milliseconds",
+                                      "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                      "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                      "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                      "US_PRIVACY": "US Privacy (CCPA) string",
+                                      "GPP_STRING": "Global Privacy Platform consent string",
+                                      "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                      "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                      "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                      "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                      "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                      "OS_VERSION": "OS version number",
+                                      "DEVICE_MAKE": "Device manufacturer",
+                                      "DEVICE_MODEL": "Device model identifier",
+                                      "USER_AGENT": "Full user agent string",
+                                      "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                      "APP_NAME": "Human-readable app name",
+                                      "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                      "REGION": "State/province/region code",
+                                      "CITY": "City name",
+                                      "ZIP": "Postal code",
+                                      "DMA": "Nielsen DMA code (US TV markets)",
+                                      "LAT": "Latitude coordinate",
+                                      "LONG": "Longitude coordinate",
+                                      "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                      "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                      "DOMAIN": "Domain where ad is shown",
+                                      "PAGE_URL": "Full page URL (encoded)",
+                                      "REFERRER": "HTTP referrer URL",
+                                      "KEYWORDS": "Page keywords (comma-separated)",
+                                      "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                      "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                      "AD_WIDTH": "Ad slot width in pixels",
+                                      "AD_HEIGHT": "Ad slot height in pixels",
+                                      "VIDEO_ID": "Content video identifier",
+                                      "VIDEO_TITLE": "Content video title",
+                                      "VIDEO_DURATION": "Content duration in seconds",
+                                      "VIDEO_CATEGORY": "IAB content category",
+                                      "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                      "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                      "PLAYER_WIDTH": "Video player width in pixels",
+                                      "PLAYER_HEIGHT": "Video player height in pixels",
+                                      "POD_POSITION": "Position within ad break",
+                                      "POD_SIZE": "Total ads in the ad break",
+                                      "AD_BREAK_ID": "Unique ad break identifier",
+                                      "STATION_ID": "Radio station or podcast identifier",
+                                      "COLLECTION_NAME": "Program or collection name",
+                                      "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                      "AUDIO_DURATION": "Audio content duration in seconds",
+                                      "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                      "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                      "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                      "SKU": "Product SKU identifier for the catalog item being rendered",
+                                      "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                      "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                      "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                      "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                      "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                      "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                      "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                      "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                      "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                      "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                      "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                      "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                    }
+                                  },
+                                  {
+                                    "type": "string",
+                                    "description": "Custom or publisher-specific macro name"
+                                  }
+                                ]
+                              },
+                              "description": "Universal macros that must be provided for webhook to function"
+                            },
+                            "response_type": {
+                              "title": "Webhook Response Type",
+                              "description": "Expected content type of webhook response",
+                              "type": "string",
+                              "enum": [
+                                "html",
+                                "json",
+                                "xml",
+                                "javascript"
+                              ]
+                            },
+                            "security": {
+                              "type": "object",
+                              "description": "Security configuration for webhook calls",
+                              "properties": {
+                                "method": {
+                                  "title": "Webhook Security Method",
+                                  "description": "Authentication method",
+                                  "type": "string",
+                                  "enum": [
+                                    "hmac_sha256",
+                                    "api_key",
+                                    "none"
+                                  ]
+                                },
+                                "hmac_header": {
+                                  "type": "string",
+                                  "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                                },
+                                "api_key_header": {
+                                  "type": "string",
+                                  "description": "Header name for API key (e.g., 'X-API-Key')"
+                                }
+                              },
+                              "required": [
+                                "method"
+                              ]
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "response_type",
+                            "security"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "CSS Asset",
+                          "description": "CSS stylesheet asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "CSS content"
+                            },
+                            "media": {
+                              "type": "string",
+                              "description": "CSS media query context (e.g., 'screen', 'print')"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "DAAST Asset",
+                          "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "url",
+                                  "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL endpoint that returns DAAST XML"
+                                },
+                                "daast_version": {
+                                  "title": "DAAST Version",
+                                  "description": "DAAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "1.0",
+                                    "1.1"
+                                  ]
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected audio duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "DAAST Tracking Event",
+                                    "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "skip",
+                                      "progress",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this DAAST tag"
+                                },
+                                "companion_ads": {
+                                  "type": "boolean",
+                                  "description": "Whether companion display ads are included"
+                                },
+                                "transcript_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to text transcript of the audio content",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "inline",
+                                  "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Inline DAAST XML content"
+                                },
+                                "daast_version": {
+                                  "title": "DAAST Version",
+                                  "description": "DAAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "1.0",
+                                    "1.1"
+                                  ]
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected audio duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "DAAST Tracking Event",
+                                    "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "skip",
+                                      "progress",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this DAAST tag"
+                                },
+                                "companion_ads": {
+                                  "type": "boolean",
+                                  "description": "Whether companion display ads are included"
+                                },
+                                "transcript_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to text transcript of the audio content",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "content"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Markdown Asset",
+                          "description": "Markdown-formatted text content following CommonMark specification",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "Language code (e.g., 'en', 'es', 'fr')"
+                            },
+                            "markdown_flavor": {
+                              "title": "Markdown Flavor",
+                              "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                              "type": "string",
+                              "enum": [
+                                "commonmark",
+                                "gfm"
+                              ],
+                              "default": "commonmark"
+                            },
+                            "allow_raw_html": {
+                              "type": "boolean",
+                              "default": false,
+                              "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Brief Asset",
+                          "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                          "allOf": [
+                            {
+                              "title": "Creative Brief",
+                              "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                              "type": "object",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Campaign or flight name for identification"
+                                },
+                                "objective": {
+                                  "type": "string",
+                                  "enum": [
+                                    "awareness",
+                                    "consideration",
+                                    "conversion",
+                                    "retention",
+                                    "engagement"
+                                  ],
+                                  "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                                },
+                                "tone": {
+                                  "type": "string",
+                                  "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                                },
+                                "audience": {
+                                  "type": "string",
+                                  "description": "Target audience description for this campaign"
+                                },
+                                "territory": {
+                                  "type": "string",
+                                  "description": "Creative territory or positioning the campaign should occupy"
+                                },
+                                "messaging": {
+                                  "type": "object",
+                                  "description": "Messaging framework for the campaign",
+                                  "properties": {
+                                    "headline": {
+                                      "type": "string",
+                                      "description": "Primary headline"
+                                    },
+                                    "tagline": {
+                                      "type": "string",
+                                      "description": "Supporting tagline or sub-headline"
+                                    },
+                                    "cta": {
+                                      "type": "string",
+                                      "description": "Call-to-action text"
+                                    },
+                                    "key_messages": {
+                                      "type": "array",
+                                      "description": "Key messages to communicate in priority order",
+                                      "items": {
+                                        "type": "string"
+                                      }
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                },
+                                "reference_assets": {
+                                  "type": "array",
+                                  "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                                  "items": {
+                                    "title": "Reference Asset",
+                                    "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                    "type": "object",
+                                    "properties": {
+                                      "url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the reference asset (image, video, or document)"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "style_reference",
+                                          "product_shot",
+                                          "mood_board",
+                                          "example_creative",
+                                          "logo",
+                                          "strategy_doc",
+                                          "storyboard"
+                                        ],
+                                        "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                      },
+                                      "description": {
+                                        "type": "string",
+                                        "description": "Human-readable description of the asset and how it should inform creative generation"
+                                      }
+                                    },
+                                    "required": [
+                                      "url",
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "compliance": {
+                                  "type": "object",
+                                  "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                                  "properties": {
+                                    "required_disclosures": {
+                                      "type": "array",
+                                      "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "text": {
+                                            "type": "string",
+                                            "description": "The disclosure text that must appear in the creative"
+                                          },
+                                          "position": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                            "items": {
+                                              "type": "string",
+                                              "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                            },
+                                            "minItems": 1
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                          },
+                                          "language": {
+                                            "type": "string",
+                                            "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                          },
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "text"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    },
+                                    "prohibited_claims": {
+                                      "type": "array",
+                                      "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                      "items": {
+                                        "type": "string"
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Catalog Asset",
+                          "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                          "allOf": [
+                            {
+                              "title": "Catalog",
+                              "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                              "type": "object",
+                              "properties": {
+                                "catalog_id": {
+                                  "type": "string",
+                                  "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                                },
+                                "name": {
+                                  "type": "string",
+                                  "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                                },
+                                "type": {
+                                  "title": "Catalog Type",
+                                  "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                                  "type": "string",
+                                  "enum": [
+                                    "offering",
+                                    "product",
+                                    "inventory",
+                                    "store",
+                                    "promotion",
+                                    "hotel",
+                                    "flight",
+                                    "job",
+                                    "vehicle",
+                                    "real_estate",
+                                    "education",
+                                    "destination",
+                                    "app"
+                                  ]
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                                },
+                                "feed_format": {
+                                  "title": "Feed Format",
+                                  "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                                  "type": "string",
+                                  "enum": [
+                                    "google_merchant_center",
+                                    "facebook_catalog",
+                                    "shopify",
+                                    "linkedin_jobs",
+                                    "custom"
+                                  ]
+                                },
+                                "update_frequency": {
+                                  "title": "Update Frequency",
+                                  "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                                  "type": "string",
+                                  "enum": [
+                                    "realtime",
+                                    "hourly",
+                                    "daily",
+                                    "weekly"
+                                  ]
+                                },
+                                "items": {
+                                  "type": "array",
+                                  "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                                  "items": {
+                                    "type": "object"
+                                  },
+                                  "minItems": 1
+                                },
+                                "ids": {
+                                  "type": "array",
+                                  "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                },
+                                "gtins": {
+                                  "type": "array",
+                                  "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                                  "items": {
+                                    "type": "string",
+                                    "pattern": "^[0-9]{8,14}$"
+                                  },
+                                  "minItems": 1
+                                },
+                                "tags": {
+                                  "type": "array",
+                                  "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                },
+                                "category": {
+                                  "type": "string",
+                                  "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                                },
+                                "query": {
+                                  "type": "string",
+                                  "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                                },
+                                "conversion_events": {
+                                  "type": "array",
+                                  "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                                  "items": {
+                                    "title": "Event Type",
+                                    "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                    "type": "string",
+                                    "enum": [
+                                      "page_view",
+                                      "view_content",
+                                      "select_content",
+                                      "select_item",
+                                      "search",
+                                      "share",
+                                      "add_to_cart",
+                                      "remove_from_cart",
+                                      "viewed_cart",
+                                      "add_to_wishlist",
+                                      "initiate_checkout",
+                                      "add_payment_info",
+                                      "purchase",
+                                      "refund",
+                                      "lead",
+                                      "qualify_lead",
+                                      "close_convert_lead",
+                                      "disqualify_lead",
+                                      "complete_registration",
+                                      "subscribe",
+                                      "start_trial",
+                                      "app_install",
+                                      "app_launch",
+                                      "contact",
+                                      "schedule",
+                                      "donate",
+                                      "submit_application",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "page_view": "User viewed a page",
+                                      "view_content": "User viewed specific content (product, article, etc.)",
+                                      "select_content": "User selected or clicked on content (article, video, etc.)",
+                                      "select_item": "User selected a specific product or item from a list",
+                                      "search": "User performed a search",
+                                      "share": "User shared content via social or messaging",
+                                      "add_to_cart": "User added an item to cart",
+                                      "remove_from_cart": "User removed an item from cart",
+                                      "viewed_cart": "User viewed their shopping cart",
+                                      "add_to_wishlist": "User added an item to a wishlist",
+                                      "initiate_checkout": "User started checkout process",
+                                      "add_payment_info": "User added payment information",
+                                      "purchase": "User completed a purchase",
+                                      "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                      "lead": "User expressed interest (form submission, signup, etc.)",
+                                      "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                      "close_convert_lead": "Lead converted to a customer or closed deal",
+                                      "disqualify_lead": "Lead disqualified or marked as not viable",
+                                      "complete_registration": "User completed account registration",
+                                      "subscribe": "User subscribed to a service or newsletter",
+                                      "start_trial": "User started a free trial",
+                                      "app_install": "User installed an application",
+                                      "app_launch": "User launched an application",
+                                      "contact": "User initiated contact (call, message, etc.)",
+                                      "schedule": "User scheduled an appointment or event",
+                                      "donate": "User made a donation",
+                                      "submit_application": "User submitted an application (loan, job, etc.)",
+                                      "custom": "Custom event type (specify in custom_event_name)"
+                                    }
+                                  },
+                                  "minItems": 1,
+                                  "uniqueItems": true
+                                },
+                                "content_id_type": {
+                                  "title": "Content ID Type",
+                                  "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                                  "type": "string",
+                                  "enum": [
+                                    "sku",
+                                    "gtin",
+                                    "offering_id",
+                                    "job_id",
+                                    "hotel_id",
+                                    "flight_id",
+                                    "vehicle_id",
+                                    "listing_id",
+                                    "store_id",
+                                    "program_id",
+                                    "destination_id",
+                                    "app_id"
+                                  ]
+                                },
+                                "feed_field_mappings": {
+                                  "type": "array",
+                                  "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                                  "items": {
+                                    "title": "Catalog Field Mapping",
+                                    "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                    "type": "object",
+                                    "properties": {
+                                      "feed_field": {
+                                        "type": "string",
+                                        "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                      },
+                                      "catalog_field": {
+                                        "type": "string",
+                                        "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                      },
+                                      "asset_group_id": {
+                                        "type": "string",
+                                        "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                      },
+                                      "value": {
+                                        "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                      },
+                                      "transform": {
+                                        "type": "string",
+                                        "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                        "enum": [
+                                          "date",
+                                          "divide",
+                                          "boolean",
+                                          "split"
+                                        ]
+                                      },
+                                      "format": {
+                                        "type": "string",
+                                        "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                      },
+                                      "timezone": {
+                                        "type": "string",
+                                        "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                      },
+                                      "by": {
+                                        "type": "number",
+                                        "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                        "exclusiveMinimum": 0
+                                      },
+                                      "separator": {
+                                        "type": "string",
+                                        "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                        "default": ","
+                                      },
+                                      "default": {
+                                        "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "allOf": [
+                                      {
+                                        "not": {
+                                          "required": [
+                                            "feed_field",
+                                            "value"
+                                          ]
+                                        }
+                                      },
+                                      {
+                                        "not": {
+                                          "required": [
+                                            "catalog_field",
+                                            "asset_group_id"
+                                          ]
+                                        }
+                                      }
+                                    ],
+                                    "additionalProperties": true,
+                                    "examples": [
+                                      {
+                                        "description": "Simple field rename",
+                                        "data": {
+                                          "feed_field": "hotel_name",
+                                          "catalog_field": "name"
+                                        }
+                                      },
+                                      {
+                                        "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                        "data": {
+                                          "feed_field": "available_from",
+                                          "catalog_field": "valid_from",
+                                          "transform": "date",
+                                          "format": "YYYYMMDD",
+                                          "timezone": "UTC"
+                                        }
+                                      },
+                                      {
+                                        "description": "Divide cents to dollars",
+                                        "data": {
+                                          "feed_field": "price_cents",
+                                          "catalog_field": "price.amount",
+                                          "transform": "divide",
+                                          "by": 100
+                                        }
+                                      },
+                                      {
+                                        "description": "Static literal injection \u2014 currency not in feed",
+                                        "data": {
+                                          "catalog_field": "price.currency",
+                                          "value": "USD"
+                                        }
+                                      },
+                                      {
+                                        "description": "Image URL assigned to typed asset pool",
+                                        "data": {
+                                          "feed_field": "primary_photo_url",
+                                          "asset_group_id": "images_landscape"
+                                        }
+                                      },
+                                      {
+                                        "description": "Vertical photo URL assigned to vertical pool",
+                                        "data": {
+                                          "feed_field": "portrait_photo_url",
+                                          "asset_group_id": "images_vertical"
+                                        }
+                                      },
+                                      {
+                                        "description": "Split comma-separated tags to array",
+                                        "data": {
+                                          "feed_field": "amenity_list",
+                                          "catalog_field": "amenities",
+                                          "transform": "split",
+                                          "separator": ","
+                                        }
+                                      },
+                                      {
+                                        "description": "Boolean coercion with default",
+                                        "data": {
+                                          "feed_field": "is_available",
+                                          "catalog_field": "available",
+                                          "transform": "boolean",
+                                          "default": false
+                                        }
+                                      }
+                                    ]
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "type"
+                              ],
+                              "additionalProperties": true,
+                              "examples": [
+                                {
+                                  "description": "Synced product catalog from Google Merchant Center",
+                                  "data": {
+                                    "catalog_id": "gmc-primary",
+                                    "name": "Primary Product Feed",
+                                    "type": "product",
+                                    "url": "https://feeds.acmecorp.com/products.xml",
+                                    "feed_format": "google_merchant_center",
+                                    "update_frequency": "daily"
+                                  }
+                                },
+                                {
+                                  "description": "Inventory feed for store-level stock data",
+                                  "data": {
+                                    "catalog_id": "store-inventory",
+                                    "name": "Store Inventory",
+                                    "type": "inventory",
+                                    "url": "https://feeds.acmecorp.com/inventory.json",
+                                    "feed_format": "custom",
+                                    "update_frequency": "hourly"
+                                  }
+                                },
+                                {
+                                  "description": "Store locator feed",
+                                  "data": {
+                                    "catalog_id": "retail-locations",
+                                    "name": "Retail Locations",
+                                    "type": "store",
+                                    "url": "https://feeds.acmecorp.com/stores.json",
+                                    "feed_format": "custom",
+                                    "update_frequency": "weekly"
+                                  }
+                                },
+                                {
+                                  "description": "Promotional pricing feed",
+                                  "data": {
+                                    "catalog_id": "summer-sale",
+                                    "name": "Summer Sale Promotions",
+                                    "type": "promotion",
+                                    "url": "https://feeds.acmecorp.com/promotions.json",
+                                    "feed_format": "google_merchant_center",
+                                    "update_frequency": "daily"
+                                  }
+                                },
+                                {
+                                  "description": "Inline offering catalog (no sync needed)",
+                                  "data": {
+                                    "type": "offering",
+                                    "items": [
+                                      {
+                                        "offering_id": "summer-sale",
+                                        "name": "Summer Sale",
+                                        "landing_url": "https://acme.com/summer"
+                                      }
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Reference to a previously synced catalog by ID",
+                                  "data": {
+                                    "catalog_id": "gmc-primary",
+                                    "type": "product",
+                                    "ids": [
+                                      "SKU-12345",
+                                      "SKU-67890"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                                  "data": {
+                                    "type": "product",
+                                    "gtins": [
+                                      "00013000006040",
+                                      "00013000006057"
+                                    ],
+                                    "content_id_type": "gtin",
+                                    "conversion_events": [
+                                      "purchase",
+                                      "add_to_cart"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Inline store catalog with catchment areas",
+                                  "data": {
+                                    "catalog_id": "retail-locations",
+                                    "name": "Retail Locations",
+                                    "type": "store",
+                                    "items": [
+                                      {
+                                        "store_id": "amsterdam-flagship",
+                                        "name": "Amsterdam Flagship",
+                                        "location": {
+                                          "lat": 52.3676,
+                                          "lng": 4.9041
+                                        },
+                                        "catchments": [
+                                          {
+                                            "catchment_id": "walk",
+                                            "travel_time": {
+                                              "value": 10,
+                                              "unit": "min"
+                                            },
+                                            "transport_mode": "walking"
+                                          },
+                                          {
+                                            "catchment_id": "drive",
+                                            "travel_time": {
+                                              "value": 15,
+                                              "unit": "min"
+                                            },
+                                            "transport_mode": "driving"
+                                          }
+                                        ]
+                                      }
+                                    ]
+                                  }
+                                }
+                              ]
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "additionalProperties": true
+                },
+                "inputs": {
+                  "type": "array",
+                  "description": "Preview contexts for generative formats - defines what scenarios to generate previews for",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Human-readable name for this preview variant"
+                      },
+                      "macros": {
+                        "type": "object",
+                        "description": "Macro values to apply for this preview",
+                        "additionalProperties": {
+                          "type": "string"
+                        }
+                      },
+                      "context_description": {
+                        "type": "string",
+                        "description": "Natural language description of the context for AI-generated content"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "User-defined tags for organization and searchability",
+                  "items": {
+                    "type": "string"
+                  }
+                },
+                "status": {
+                  "title": "Creative Status",
+                  "description": "For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+                  "type": "string",
+                  "enum": [
+                    "processing",
+                    "pending_review",
+                    "approved",
+                    "rejected",
+                    "archived"
+                  ],
+                  "enumDescriptions": {
+                    "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
+                    "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+                    "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+                    "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+                    "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+                  }
+                },
+                "weight": {
+                  "type": "number",
+                  "description": "Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.",
+                  "minimum": 0,
+                  "maximum": 100
+                },
+                "placement_ids": {
+                  "type": "array",
+                  "description": "Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "industry_identifiers": {
+                  "type": "array",
+                  "description": "Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.",
+                  "items": {
+                    "title": "Industry Identifier",
+                    "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                    "type": "object",
+                    "properties": {
+                      "type": {
+                        "title": "Creative Identifier Type",
+                        "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                        "type": "string",
+                        "enum": [
+                          "ad_id",
+                          "isci",
+                          "clearcast_clock"
+                        ],
+                        "enumDescriptions": {
+                          "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                          "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                          "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                        },
+                        "examples": [
+                          "ad_id",
+                          "isci",
+                          "clearcast_clock"
+                        ]
+                      },
+                      "value": {
+                        "type": "string",
+                        "maxLength": 64,
+                        "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "uniqueItems": true
+                },
+                "provenance": {
+                  "title": "Provenance",
+                  "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).",
+                  "type": "object",
+                  "properties": {
+                    "digital_source_type": {
+                      "title": "Digital Source Type",
+                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                      "type": "string",
+                      "enum": [
+                        "digital_capture",
+                        "digital_creation",
+                        "trained_algorithmic_media",
+                        "composite_with_trained_algorithmic_media",
+                        "algorithmic_media",
+                        "composite_capture",
+                        "composite_synthetic",
+                        "human_edits",
+                        "data_driven_media"
+                      ],
+                      "enumDescriptions": {
+                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                        "composite_capture": "Multiple digital captures composited together without AI",
+                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                      }
+                    },
+                    "ai_tool": {
+                      "type": "object",
+                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                      "properties": {
+                        "name": {
+                          "type": "string",
+                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                        },
+                        "version": {
+                          "type": "string",
+                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                        },
+                        "provider": {
+                          "type": "string",
+                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                        }
+                      },
+                      "required": [
+                        "name"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "human_oversight": {
+                      "type": "string",
+                      "description": "Level of human involvement in the AI-assisted creation process",
+                      "enum": [
+                        "none",
+                        "prompt_only",
+                        "selected",
+                        "edited",
+                        "directed"
+                      ],
+                      "enumDescriptions": {
+                        "none": "Fully automated with no human involvement in generation",
+                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                        "selected": "Human selected from multiple AI-generated candidates",
+                        "edited": "Human edited or refined AI-generated output",
+                        "directed": "Human directed the creative process with AI as an assistive tool"
+                      }
+                    },
+                    "declared_by": {
+                      "type": "object",
+                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                      "properties": {
+                        "agent_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL of the agent or service that declared this provenance"
+                        },
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "creator",
+                            "advertiser",
+                            "agency",
+                            "platform",
+                            "tool"
+                          ],
+                          "description": "Role of the declaring party in the supply chain",
+                          "enumDescriptions": {
+                            "creator": "The party that created or generated the content",
+                            "advertiser": "The brand or advertiser that owns the content",
+                            "agency": "Agency acting on behalf of the advertiser",
+                            "platform": "Ad platform or publisher that processed the content",
+                            "tool": "Automated tool or service that attached provenance metadata"
+                          }
+                        }
+                      },
+                      "required": [
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "declared_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                    },
+                    "created_time": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this content was created or generated (ISO 8601)"
+                    },
+                    "c2pa": {
+                      "type": "object",
+                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                      "properties": {
+                        "manifest_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the C2PA manifest store for this content"
+                        }
+                      },
+                      "required": [
+                        "manifest_url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "disclosure": {
+                      "type": "object",
+                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                      "properties": {
+                        "required": {
+                          "type": "boolean",
+                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                        },
+                        "jurisdictions": {
+                          "type": "array",
+                          "description": "Jurisdictions where disclosure obligations apply",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "country": {
+                                "type": "string",
+                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                              },
+                              "region": {
+                                "type": "string",
+                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                              },
+                              "regulation": {
+                                "type": "string",
+                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                              },
+                              "label_text": {
+                                "type": "string",
+                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                              },
+                              "render_guidance": {
+                                "type": "object",
+                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                "minProperties": 1,
+                                "properties": {
+                                  "persistence": {
+                                    "title": "Disclosure Persistence",
+                                    "description": "How long the disclosure must persist during content playback or display",
+                                    "type": "string",
+                                    "enum": [
+                                      "continuous",
+                                      "initial",
+                                      "flexible"
+                                    ],
+                                    "enumDescriptions": {
+                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                    }
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                  },
+                                  "positions": {
+                                    "type": "array",
+                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                    "items": {
+                                      "title": "Disclosure Position",
+                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                      "type": "string",
+                                      "enum": [
+                                        "prominent",
+                                        "footer",
+                                        "audio",
+                                        "subtitle",
+                                        "overlay",
+                                        "end_card",
+                                        "pre_roll",
+                                        "companion"
+                                      ]
+                                    },
+                                    "minItems": 1,
+                                    "uniqueItems": true
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "country",
+                              "regulation"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "required"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "verification": {
+                      "type": "array",
+                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                      "minItems": 1,
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "verified_by": {
+                            "type": "string",
+                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                          },
+                          "verified_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When the verification was performed (ISO 8601)"
+                          },
+                          "result": {
+                            "type": "string",
+                            "enum": [
+                              "authentic",
+                              "ai_generated",
+                              "ai_modified",
+                              "inconclusive"
+                            ],
+                            "description": "Verification outcome"
+                          },
+                          "confidence": {
+                            "type": "number",
+                            "minimum": 0,
+                            "maximum": 1,
+                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                          },
+                          "details_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the full verification report"
+                          }
+                        },
+                        "required": [
+                          "verified_by",
+                          "result"
+                        ],
+                        "additionalProperties": true
+                      }
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "creative_id",
+                "name",
+                "format_id",
+                "assets"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1,
+            "maxItems": 100
+          },
+          "context": {
+            "title": "Context Object",
+            "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            "type": "object",
+            "additionalProperties": true
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "package_id"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "invoice_recipient": {
+      "title": "Business Entity",
+      "description": "Update who receives the invoice for this buy. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request.",
+      "type": "object",
+      "properties": {
+        "legal_name": {
+          "type": "string",
+          "description": "Registered legal name of the business entity",
+          "maxLength": 200
+        },
+        "vat_id": {
+          "type": "string",
+          "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+          "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+        },
+        "tax_id": {
+          "type": "string",
+          "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+          "maxLength": 30
+        },
+        "registration_number": {
+          "type": "string",
+          "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+          "maxLength": 50
+        },
+        "address": {
+          "type": "object",
+          "description": "Postal address for invoicing and legal correspondence",
+          "properties": {
+            "street": {
+              "type": "string",
+              "description": "Street address including building number",
+              "maxLength": 200
+            },
+            "city": {
+              "type": "string",
+              "maxLength": 100
+            },
+            "postal_code": {
+              "type": "string",
+              "maxLength": 20
+            },
+            "region": {
+              "type": "string",
+              "description": "State, province, or region",
+              "maxLength": 100
+            },
+            "country": {
+              "type": "string",
+              "description": "ISO 3166-1 alpha-2 country code",
+              "pattern": "^[A-Z]{2}$"
+            }
+          },
+          "required": [
+            "street",
+            "city",
+            "postal_code",
+            "country"
+          ],
+          "additionalProperties": false
+        },
+        "contacts": {
+          "type": "array",
+          "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "role": {
+                "type": "string",
+                "enum": [
+                  "billing",
+                  "legal",
+                  "creative",
+                  "general"
+                ],
+                "enumDescriptions": {
+                  "billing": "Accounts payable and invoice queries",
+                  "legal": "Contract and compliance matters",
+                  "creative": "Material submission and creative approval",
+                  "general": "Default contact when no specific role applies"
+                },
+                "description": "Contact's functional role in the business relationship"
+              },
+              "name": {
+                "type": "string",
+                "description": "Full name of the contact",
+                "maxLength": 200
+              },
+              "email": {
+                "type": "string",
+                "format": "email",
+                "maxLength": 254
+              },
+              "phone": {
+                "type": "string",
+                "maxLength": 30
+              }
+            },
+            "required": [
+              "role"
+            ],
+            "additionalProperties": false
+          },
+          "maxItems": 10
+        },
+        "bank": {
+          "type": "object",
+          "writeOnly": true,
+          "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+          "properties": {
+            "account_holder": {
+              "type": "string",
+              "description": "Name on the bank account",
+              "maxLength": 200
+            },
+            "iban": {
+              "type": "string",
+              "description": "International Bank Account Number (SEPA markets)",
+              "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+            },
+            "bic": {
+              "type": "string",
+              "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+              "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+            },
+            "routing_number": {
+              "type": "string",
+              "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+              "maxLength": 30
+            },
+            "account_number": {
+              "type": "string",
+              "description": "Bank account number for non-SEPA markets",
+              "maxLength": 30
+            }
+          },
+          "required": [
+            "account_holder"
+          ],
+          "additionalProperties": false
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "legal_name"
+      ],
+      "additionalProperties": false,
+      "examples": [
+        {
+          "description": "German agency with full B2B details",
+          "data": {
+            "legal_name": "Pinnacle Media GmbH",
+            "vat_id": "DE123456789",
+            "registration_number": "HRB 12345",
+            "address": {
+              "street": "Friedrichstrasse 100",
+              "city": "Berlin",
+              "postal_code": "10117",
+              "country": "DE"
+            },
+            "contacts": [
+              {
+                "role": "billing",
+                "name": "Sam Adeyemi",
+                "email": "billing@pinnacle-media.com",
+                "phone": "+49 30 12345678"
+              }
+            ],
+            "bank": {
+              "account_holder": "Pinnacle Media GmbH",
+              "iban": "DE89370400440532013000",
+              "bic": "COBADEFFXXX"
+            }
+          }
+        },
+        {
+          "description": "US advertiser with EIN and domestic bank details",
+          "data": {
+            "legal_name": "Acme Corporation",
+            "tax_id": "12-3456789",
+            "address": {
+              "street": "123 Main St",
+              "city": "New York",
+              "postal_code": "10001",
+              "region": "NY",
+              "country": "US"
+            },
+            "contacts": [
+              {
+                "role": "billing",
+                "name": "AP Department",
+                "email": "ap@acme-corp.com"
+              }
+            ],
+            "bank": {
+              "account_holder": "Acme Corporation",
+              "routing_number": "021000021",
+              "account_number": "123456789"
+            }
+          }
+        }
+      ]
+    },
+    "new_packages": {
+      "type": "array",
+      "description": "New packages to add to this media buy. Uses the same schema as create_media_buy packages. Sellers that support mid-flight package additions advertise add_packages in valid_actions. Sellers that do not support this MUST reject with UNSUPPORTED_FEATURE.",
+      "items": {
+        "title": "Package Request",
+        "description": "Package configuration for media buy creation",
+        "type": "object",
+        "properties": {
+          "adcp_major_version": {
+            "type": "integer",
+            "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            "minimum": 1,
+            "maximum": 99
+          },
+          "product_id": {
+            "type": "string",
+            "description": "Product ID for this package"
+          },
+          "format_ids": {
+            "type": "array",
+            "description": "Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.",
+            "items": {
+              "title": "Format ID",
+              "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+              "type": "object",
+              "properties": {
+                "agent_url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                },
+                "id": {
+                  "type": "string",
+                  "pattern": "^[a-zA-Z0-9_-]+$",
+                  "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                },
+                "width": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "height": {
+                  "type": "integer",
+                  "minimum": 1,
+                  "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                },
+                "duration_ms": {
+                  "type": "number",
+                  "minimum": 1,
+                  "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                }
+              },
+              "required": [
+                "agent_url",
+                "id"
+              ],
+              "additionalProperties": true,
+              "dependencies": {
+                "width": [
+                  "height"
+                ],
+                "height": [
+                  "width"
+                ]
+              }
+            },
+            "minItems": 1
+          },
+          "budget": {
+            "type": "number",
+            "description": "Budget allocation for this package in the media buy's currency",
+            "minimum": 0
+          },
+          "pacing": {
+            "title": "Pacing",
+            "description": "Budget pacing strategy",
+            "type": "string",
+            "enum": [
+              "even",
+              "asap",
+              "front_loaded"
+            ],
+            "enumDescriptions": {
+              "even": "Allocate remaining budget evenly over remaining campaign duration (default)",
+              "asap": "Spend remaining budget as quickly as possible",
+              "front_loaded": "Allocate more remaining budget earlier in the remaining campaign period"
+            }
+          },
+          "pricing_option_id": {
+            "type": "string",
+            "description": "ID of the selected pricing option from the product's pricing_options array"
+          },
+          "bid_price": {
+            "type": "number",
+            "description": "Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            "minimum": 0
+          },
+          "impressions": {
+            "type": "number",
+            "description": "Impression goal for this package",
+            "minimum": 0
+          },
+          "start_time": {
+            "type": "string",
+            "format": "date-time",
+            "not": {
+              "const": "asap"
+            },
+            "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
+          },
+          "end_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
+          },
+          "paused": {
+            "type": "boolean",
+            "description": "Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.",
+            "default": false
+          },
+          "catalogs": {
+            "type": "array",
+            "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.",
+            "items": {
+              "title": "Catalog",
+              "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+              "type": "object",
+              "properties": {
+                "catalog_id": {
+                  "type": "string",
+                  "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                },
+                "type": {
+                  "title": "Catalog Type",
+                  "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                  "type": "string",
+                  "enum": [
+                    "offering",
+                    "product",
+                    "inventory",
+                    "store",
+                    "promotion",
+                    "hotel",
+                    "flight",
+                    "job",
+                    "vehicle",
+                    "real_estate",
+                    "education",
+                    "destination",
+                    "app"
+                  ]
+                },
+                "url": {
+                  "type": "string",
+                  "format": "uri",
+                  "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                },
+                "feed_format": {
+                  "title": "Feed Format",
+                  "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                  "type": "string",
+                  "enum": [
+                    "google_merchant_center",
+                    "facebook_catalog",
+                    "shopify",
+                    "linkedin_jobs",
+                    "custom"
+                  ]
+                },
+                "update_frequency": {
+                  "title": "Update Frequency",
+                  "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                  "type": "string",
+                  "enum": [
+                    "realtime",
+                    "hourly",
+                    "daily",
+                    "weekly"
+                  ]
+                },
+                "items": {
+                  "type": "array",
+                  "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                  "items": {
+                    "type": "object"
+                  },
+                  "minItems": 1
+                },
+                "ids": {
+                  "type": "array",
+                  "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "gtins": {
+                  "type": "array",
+                  "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                  "items": {
+                    "type": "string",
+                    "pattern": "^[0-9]{8,14}$"
+                  },
+                  "minItems": 1
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "category": {
+                  "type": "string",
+                  "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                },
+                "query": {
+                  "type": "string",
+                  "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                },
+                "conversion_events": {
+                  "type": "array",
+                  "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                  "items": {
+                    "title": "Event Type",
+                    "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                    "type": "string",
+                    "enum": [
+                      "page_view",
+                      "view_content",
+                      "select_content",
+                      "select_item",
+                      "search",
+                      "share",
+                      "add_to_cart",
+                      "remove_from_cart",
+                      "viewed_cart",
+                      "add_to_wishlist",
+                      "initiate_checkout",
+                      "add_payment_info",
+                      "purchase",
+                      "refund",
+                      "lead",
+                      "qualify_lead",
+                      "close_convert_lead",
+                      "disqualify_lead",
+                      "complete_registration",
+                      "subscribe",
+                      "start_trial",
+                      "app_install",
+                      "app_launch",
+                      "contact",
+                      "schedule",
+                      "donate",
+                      "submit_application",
+                      "custom"
+                    ],
+                    "enumDescriptions": {
+                      "page_view": "User viewed a page",
+                      "view_content": "User viewed specific content (product, article, etc.)",
+                      "select_content": "User selected or clicked on content (article, video, etc.)",
+                      "select_item": "User selected a specific product or item from a list",
+                      "search": "User performed a search",
+                      "share": "User shared content via social or messaging",
+                      "add_to_cart": "User added an item to cart",
+                      "remove_from_cart": "User removed an item from cart",
+                      "viewed_cart": "User viewed their shopping cart",
+                      "add_to_wishlist": "User added an item to a wishlist",
+                      "initiate_checkout": "User started checkout process",
+                      "add_payment_info": "User added payment information",
+                      "purchase": "User completed a purchase",
+                      "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                      "lead": "User expressed interest (form submission, signup, etc.)",
+                      "qualify_lead": "Lead qualified by sales or scoring criteria",
+                      "close_convert_lead": "Lead converted to a customer or closed deal",
+                      "disqualify_lead": "Lead disqualified or marked as not viable",
+                      "complete_registration": "User completed account registration",
+                      "subscribe": "User subscribed to a service or newsletter",
+                      "start_trial": "User started a free trial",
+                      "app_install": "User installed an application",
+                      "app_launch": "User launched an application",
+                      "contact": "User initiated contact (call, message, etc.)",
+                      "schedule": "User scheduled an appointment or event",
+                      "donate": "User made a donation",
+                      "submit_application": "User submitted an application (loan, job, etc.)",
+                      "custom": "Custom event type (specify in custom_event_name)"
+                    }
+                  },
+                  "minItems": 1,
+                  "uniqueItems": true
+                },
+                "content_id_type": {
+                  "title": "Content ID Type",
+                  "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                  "type": "string",
+                  "enum": [
+                    "sku",
+                    "gtin",
+                    "offering_id",
+                    "job_id",
+                    "hotel_id",
+                    "flight_id",
+                    "vehicle_id",
+                    "listing_id",
+                    "store_id",
+                    "program_id",
+                    "destination_id",
+                    "app_id"
+                  ]
+                },
+                "feed_field_mappings": {
+                  "type": "array",
+                  "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                  "items": {
+                    "title": "Catalog Field Mapping",
+                    "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                    "type": "object",
+                    "properties": {
+                      "feed_field": {
+                        "type": "string",
+                        "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                      },
+                      "catalog_field": {
+                        "type": "string",
+                        "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                      },
+                      "asset_group_id": {
+                        "type": "string",
+                        "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                      },
+                      "value": {
+                        "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                      },
+                      "transform": {
+                        "type": "string",
+                        "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                        "enum": [
+                          "date",
+                          "divide",
+                          "boolean",
+                          "split"
+                        ]
+                      },
+                      "format": {
+                        "type": "string",
+                        "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                      },
+                      "timezone": {
+                        "type": "string",
+                        "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                      },
+                      "by": {
+                        "type": "number",
+                        "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                        "exclusiveMinimum": 0
+                      },
+                      "separator": {
+                        "type": "string",
+                        "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                        "default": ","
+                      },
+                      "default": {
+                        "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "allOf": [
+                      {
+                        "not": {
+                          "required": [
+                            "feed_field",
+                            "value"
+                          ]
+                        }
+                      },
+                      {
+                        "not": {
+                          "required": [
+                            "catalog_field",
+                            "asset_group_id"
+                          ]
+                        }
+                      }
+                    ],
+                    "additionalProperties": true,
+                    "examples": [
+                      {
+                        "description": "Simple field rename",
+                        "data": {
+                          "feed_field": "hotel_name",
+                          "catalog_field": "name"
+                        }
+                      },
+                      {
+                        "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                        "data": {
+                          "feed_field": "available_from",
+                          "catalog_field": "valid_from",
+                          "transform": "date",
+                          "format": "YYYYMMDD",
+                          "timezone": "UTC"
+                        }
+                      },
+                      {
+                        "description": "Divide cents to dollars",
+                        "data": {
+                          "feed_field": "price_cents",
+                          "catalog_field": "price.amount",
+                          "transform": "divide",
+                          "by": 100
+                        }
+                      },
+                      {
+                        "description": "Static literal injection \u2014 currency not in feed",
+                        "data": {
+                          "catalog_field": "price.currency",
+                          "value": "USD"
+                        }
+                      },
+                      {
+                        "description": "Image URL assigned to typed asset pool",
+                        "data": {
+                          "feed_field": "primary_photo_url",
+                          "asset_group_id": "images_landscape"
+                        }
+                      },
+                      {
+                        "description": "Vertical photo URL assigned to vertical pool",
+                        "data": {
+                          "feed_field": "portrait_photo_url",
+                          "asset_group_id": "images_vertical"
+                        }
+                      },
+                      {
+                        "description": "Split comma-separated tags to array",
+                        "data": {
+                          "feed_field": "amenity_list",
+                          "catalog_field": "amenities",
+                          "transform": "split",
+                          "separator": ","
+                        }
+                      },
+                      {
+                        "description": "Boolean coercion with default",
+                        "data": {
+                          "feed_field": "is_available",
+                          "catalog_field": "available",
+                          "transform": "boolean",
+                          "default": false
+                        }
+                      }
+                    ]
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "type"
+              ],
+              "additionalProperties": true,
+              "examples": [
+                {
+                  "description": "Synced product catalog from Google Merchant Center",
+                  "data": {
+                    "catalog_id": "gmc-primary",
+                    "name": "Primary Product Feed",
+                    "type": "product",
+                    "url": "https://feeds.acmecorp.com/products.xml",
+                    "feed_format": "google_merchant_center",
+                    "update_frequency": "daily"
+                  }
+                },
+                {
+                  "description": "Inventory feed for store-level stock data",
+                  "data": {
+                    "catalog_id": "store-inventory",
+                    "name": "Store Inventory",
+                    "type": "inventory",
+                    "url": "https://feeds.acmecorp.com/inventory.json",
+                    "feed_format": "custom",
+                    "update_frequency": "hourly"
+                  }
+                },
+                {
+                  "description": "Store locator feed",
+                  "data": {
+                    "catalog_id": "retail-locations",
+                    "name": "Retail Locations",
+                    "type": "store",
+                    "url": "https://feeds.acmecorp.com/stores.json",
+                    "feed_format": "custom",
+                    "update_frequency": "weekly"
+                  }
+                },
+                {
+                  "description": "Promotional pricing feed",
+                  "data": {
+                    "catalog_id": "summer-sale",
+                    "name": "Summer Sale Promotions",
+                    "type": "promotion",
+                    "url": "https://feeds.acmecorp.com/promotions.json",
+                    "feed_format": "google_merchant_center",
+                    "update_frequency": "daily"
+                  }
+                },
+                {
+                  "description": "Inline offering catalog (no sync needed)",
+                  "data": {
+                    "type": "offering",
+                    "items": [
+                      {
+                        "offering_id": "summer-sale",
+                        "name": "Summer Sale",
+                        "landing_url": "https://acme.com/summer"
+                      }
+                    ]
+                  }
+                },
+                {
+                  "description": "Reference to a previously synced catalog by ID",
+                  "data": {
+                    "catalog_id": "gmc-primary",
+                    "type": "product",
+                    "ids": [
+                      "SKU-12345",
+                      "SKU-67890"
+                    ]
+                  }
+                },
+                {
+                  "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                  "data": {
+                    "type": "product",
+                    "gtins": [
+                      "00013000006040",
+                      "00013000006057"
+                    ],
+                    "content_id_type": "gtin",
+                    "conversion_events": [
+                      "purchase",
+                      "add_to_cart"
+                    ]
+                  }
+                },
+                {
+                  "description": "Inline store catalog with catchment areas",
+                  "data": {
+                    "catalog_id": "retail-locations",
+                    "name": "Retail Locations",
+                    "type": "store",
+                    "items": [
+                      {
+                        "store_id": "amsterdam-flagship",
+                        "name": "Amsterdam Flagship",
+                        "location": {
+                          "lat": 52.3676,
+                          "lng": 4.9041
+                        },
+                        "catchments": [
+                          {
+                            "catchment_id": "walk",
+                            "travel_time": {
+                              "value": 10,
+                              "unit": "min"
+                            },
+                            "transport_mode": "walking"
+                          },
+                          {
+                            "catchment_id": "drive",
+                            "travel_time": {
+                              "value": 15,
+                              "unit": "min"
+                            },
+                            "transport_mode": "driving"
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                }
+              ]
+            }
+          },
+          "optimization_goals": {
+            "type": "array",
+            "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
+            "items": {
+              "title": "Optimization Goal",
+              "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
+              "oneOf": [
+                {
+                  "type": "object",
+                  "description": "Optimize for a seller-tracked delivery metric. No event source required \u2014 the seller tracks these natively.",
+                  "properties": {
+                    "kind": {
+                      "type": "string",
+                      "const": "metric"
+                    },
+                    "metric": {
+                      "type": "string",
+                      "enum": [
+                        "clicks",
+                        "views",
+                        "completed_views",
+                        "viewed_seconds",
+                        "attention_seconds",
+                        "attention_score",
+                        "engagements",
+                        "follows",
+                        "saves",
+                        "profile_visits",
+                        "reach"
+                      ],
+                      "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+                    },
+                    "reach_unit": {
+                      "allOf": [
+                        {
+                          "title": "Reach Unit",
+                          "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                          "type": "string",
+                          "enum": [
+                            "individuals",
+                            "households",
+                            "devices",
+                            "accounts",
+                            "cookies",
+                            "custom"
+                          ],
+                          "enumDescriptions": {
+                            "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                            "households": "Unique households or TV homes.",
+                            "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                            "accounts": "Unique logged-in accounts (platform-specific identity).",
+                            "cookies": "Unique browser cookies.",
+                            "custom": "Publisher-defined reach unit. Describe in ext."
+                          }
+                        }
+                      ],
+                      "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+                    },
+                    "target_frequency": {
+                      "type": "object",
+                      "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
+                      "properties": {
+                        "min": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1)."
+                        },
+                        "max": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point."
+                        },
+                        "window": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
+                        }
+                      },
+                      "required": [
+                        "window"
+                      ],
+                      "anyOf": [
+                        {
+                          "required": [
+                            "min"
+                          ]
+                        },
+                        {
+                          "required": [
+                            "max"
+                          ]
+                        }
+                      ],
+                      "additionalProperties": true
+                    },
+                    "view_duration_seconds": {
+                      "type": "number",
+                      "exclusiveMinimum": 0,
+                      "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies."
+                    },
+                    "target": {
+                      "description": "Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Target cost per unit of the metric (e.g., cost per click, cost per completed view).",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "cost_per"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target cost per metric unit in the buy currency"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Minimum per-impression rate for this metric. The metric defines the units: proportions for count metrics (e.g., 0.001 for 0.1% CTR, 0.70 for 70% viewability), seconds for duration metrics (e.g., 3.0 for 3s in view), or score for score metrics.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "threshold_rate"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score)."
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "priority": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "metric"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "description": "Optimize for advertiser-tracked conversion events. Requires event sources registered via sync_event_sources.",
+                  "properties": {
+                    "kind": {
+                      "type": "string",
+                      "const": "event"
+                    },
+                    "event_sources": {
+                      "type": "array",
+                      "description": "Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries \u2014 the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.",
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "event_source_id": {
+                            "type": "string",
+                            "minLength": 1,
+                            "description": "Event source to include (must be configured on this account via sync_event_sources)"
+                          },
+                          "event_type": {
+                            "title": "Event Type",
+                            "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)",
+                            "type": "string",
+                            "enum": [
+                              "page_view",
+                              "view_content",
+                              "select_content",
+                              "select_item",
+                              "search",
+                              "share",
+                              "add_to_cart",
+                              "remove_from_cart",
+                              "viewed_cart",
+                              "add_to_wishlist",
+                              "initiate_checkout",
+                              "add_payment_info",
+                              "purchase",
+                              "refund",
+                              "lead",
+                              "qualify_lead",
+                              "close_convert_lead",
+                              "disqualify_lead",
+                              "complete_registration",
+                              "subscribe",
+                              "start_trial",
+                              "app_install",
+                              "app_launch",
+                              "contact",
+                              "schedule",
+                              "donate",
+                              "submit_application",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "page_view": "User viewed a page",
+                              "view_content": "User viewed specific content (product, article, etc.)",
+                              "select_content": "User selected or clicked on content (article, video, etc.)",
+                              "select_item": "User selected a specific product or item from a list",
+                              "search": "User performed a search",
+                              "share": "User shared content via social or messaging",
+                              "add_to_cart": "User added an item to cart",
+                              "remove_from_cart": "User removed an item from cart",
+                              "viewed_cart": "User viewed their shopping cart",
+                              "add_to_wishlist": "User added an item to a wishlist",
+                              "initiate_checkout": "User started checkout process",
+                              "add_payment_info": "User added payment information",
+                              "purchase": "User completed a purchase",
+                              "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                              "lead": "User expressed interest (form submission, signup, etc.)",
+                              "qualify_lead": "Lead qualified by sales or scoring criteria",
+                              "close_convert_lead": "Lead converted to a customer or closed deal",
+                              "disqualify_lead": "Lead disqualified or marked as not viable",
+                              "complete_registration": "User completed account registration",
+                              "subscribe": "User subscribed to a service or newsletter",
+                              "start_trial": "User started a free trial",
+                              "app_install": "User installed an application",
+                              "app_launch": "User launched an application",
+                              "contact": "User initiated contact (call, message, etc.)",
+                              "schedule": "User scheduled an appointment or event",
+                              "donate": "User made a donation",
+                              "submit_application": "User submitted an application (loan, job, etc.)",
+                              "custom": "Custom event type (specify in custom_event_name)"
+                            }
+                          },
+                          "custom_event_name": {
+                            "type": "string",
+                            "description": "Required when event_type is 'custom'. Platform-specific name for the custom event."
+                          },
+                          "value_field": {
+                            "type": "string",
+                            "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' \u2014 sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism."
+                          },
+                          "value_factor": {
+                            "type": "number",
+                            "default": 1,
+                            "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics."
+                          }
+                        },
+                        "required": [
+                          "event_source_id",
+                          "event_type"
+                        ],
+                        "additionalProperties": true
+                      },
+                      "minItems": 1
+                    },
+                    "target": {
+                      "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget \u2014 regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.",
+                      "oneOf": [
+                        {
+                          "type": "object",
+                          "description": "Target cost per conversion event (after deduplication across event_sources).",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "cost_per"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target cost per event in the buy currency"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Target return per unit of ad spend, calculated as sum(value_field * value_factor) / spend across all deduplicated events. Requires value_field on at least one event_sources entry.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "per_ad_spend"
+                            },
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "type": "object",
+                          "description": "Maximize total conversion value within budget, without a specific return ratio target. Steers spend toward higher-value conversions rather than maximizing conversion count. Requires value_field on at least one event_sources entry.",
+                          "properties": {
+                            "kind": {
+                              "type": "string",
+                              "const": "maximize_value"
+                            }
+                          },
+                          "required": [
+                            "kind"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "attribution_window": {
+                      "type": "object",
+                      "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
+                      "properties": {
+                        "post_click": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
+                        },
+                        "post_view": {
+                          "allOf": [
+                            {
+                              "title": "Duration",
+                              "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                              "type": "object",
+                              "properties": {
+                                "interval": {
+                                  "type": "integer",
+                                  "minimum": 1,
+                                  "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                },
+                                "unit": {
+                                  "type": "string",
+                                  "enum": [
+                                    "seconds",
+                                    "minutes",
+                                    "hours",
+                                    "days",
+                                    "campaign"
+                                  ],
+                                  "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                }
+                              },
+                              "required": [
+                                "interval",
+                                "unit"
+                              ],
+                              "additionalProperties": false
+                            }
+                          ],
+                          "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
+                        }
+                      },
+                      "required": [
+                        "post_click"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "priority": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "event_sources"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            },
+            "minItems": 1
+          },
+          "targeting_overlay": {
+            "title": "Targeting Overlay",
+            "description": "Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).",
+            "type": "object",
+            "properties": {
+              "geo_countries": {
+                "type": "array",
+                "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "geo_countries_exclude": {
+                "type": "array",
+                "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "geo_regions": {
+                "type": "array",
+                "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                },
+                "minItems": 1
+              },
+              "geo_regions_exclude": {
+                "type": "array",
+                "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                },
+                "minItems": 1
+              },
+              "geo_metros": {
+                "type": "array",
+                "description": "Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Metro Area System",
+                      "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                      "type": "string",
+                      "enum": [
+                        "nielsen_dma",
+                        "uk_itl1",
+                        "uk_itl2",
+                        "eurostat_nuts2",
+                        "custom"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_metros_exclude": {
+                "type": "array",
+                "description": "Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Metro Area System",
+                      "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                      "type": "string",
+                      "enum": [
+                        "nielsen_dma",
+                        "uk_itl1",
+                        "uk_itl2",
+                        "eurostat_nuts2",
+                        "custom"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_postal_areas": {
+                "type": "array",
+                "description": "Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Postal Code System",
+                      "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                      "type": "string",
+                      "enum": [
+                        "us_zip",
+                        "us_zip_plus_four",
+                        "gb_outward",
+                        "gb_full",
+                        "ca_fsa",
+                        "ca_full",
+                        "de_plz",
+                        "fr_code_postal",
+                        "au_postcode",
+                        "ch_plz",
+                        "at_plz"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "geo_postal_areas_exclude": {
+                "type": "array",
+                "description": "Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "system": {
+                      "title": "Postal Code System",
+                      "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                      "type": "string",
+                      "enum": [
+                        "us_zip",
+                        "us_zip_plus_four",
+                        "gb_outward",
+                        "gb_full",
+                        "ca_fsa",
+                        "ca_full",
+                        "de_plz",
+                        "fr_code_postal",
+                        "au_postcode",
+                        "ch_plz",
+                        "at_plz"
+                      ]
+                    },
+                    "values": {
+                      "type": "array",
+                      "description": "Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "system",
+                    "values"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "daypart_targets": {
+                "type": "array",
+                "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
+                "items": {
+                  "title": "Daypart Target",
+                  "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+                  "type": "object",
+                  "properties": {
+                    "days": {
+                      "type": "array",
+                      "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
+                      "items": {
+                        "title": "Day of Week",
+                        "description": "Days of the week for daypart targeting",
+                        "type": "string",
+                        "enum": [
+                          "monday",
+                          "tuesday",
+                          "wednesday",
+                          "thursday",
+                          "friday",
+                          "saturday",
+                          "sunday"
+                        ]
+                      },
+                      "minItems": 1
+                    },
+                    "start_hour": {
+                      "type": "integer",
+                      "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+                      "minimum": 0,
+                      "maximum": 23
+                    },
+                    "end_hour": {
+                      "type": "integer",
+                      "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
+                      "minimum": 1,
+                      "maximum": 24
+                    },
+                    "label": {
+                      "type": "string",
+                      "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+                    }
+                  },
+                  "required": [
+                    "days",
+                    "start_hour",
+                    "end_hour"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "axe_include_segment": {
+                "type": "string",
+                "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
+                "deprecated": true
+              },
+              "axe_exclude_segment": {
+                "type": "string",
+                "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
+                "deprecated": true
+              },
+              "audience_include": {
+                "type": "array",
+                "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              },
+              "audience_exclude": {
+                "type": "array",
+                "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "string"
+                },
+                "minItems": 1
+              },
+              "frequency_cap": {
+                "title": "Frequency Cap",
+                "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
+                "type": "object",
+                "properties": {
+                  "suppress": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+                  },
+                  "suppress_minutes": {
+                    "type": "number",
+                    "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+                    "minimum": 0
+                  },
+                  "max_impressions": {
+                    "type": "integer",
+                    "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+                    "minimum": 1
+                  },
+                  "per": {
+                    "allOf": [
+                      {
+                        "title": "Reach Unit",
+                        "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                        "type": "string",
+                        "enum": [
+                          "individuals",
+                          "households",
+                          "devices",
+                          "accounts",
+                          "cookies",
+                          "custom"
+                        ],
+                        "enumDescriptions": {
+                          "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                          "households": "Unique households or TV homes.",
+                          "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                          "accounts": "Unique logged-in accounts (platform-specific identity).",
+                          "cookies": "Unique browser cookies.",
+                          "custom": "Publisher-defined reach unit. Describe in ext."
+                        }
+                      }
+                    ],
+                    "description": "Entity granularity for impression counting. Required when max_impressions is set."
+                  },
+                  "window": {
+                    "allOf": [
+                      {
+                        "title": "Duration",
+                        "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                        "type": "object",
+                        "properties": {
+                          "interval": {
+                            "type": "integer",
+                            "minimum": 1,
+                            "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                          },
+                          "unit": {
+                            "type": "string",
+                            "enum": [
+                              "seconds",
+                              "minutes",
+                              "hours",
+                              "days",
+                              "campaign"
+                            ],
+                            "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                          }
+                        },
+                        "required": [
+                          "interval",
+                          "unit"
+                        ],
+                        "additionalProperties": false
+                      }
+                    ],
+                    "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+                  }
+                },
+                "anyOf": [
+                  {
+                    "required": [
+                      "suppress"
+                    ]
+                  },
+                  {
+                    "required": [
+                      "suppress_minutes"
+                    ]
+                  },
+                  {
+                    "required": [
+                      "max_impressions"
+                    ]
+                  }
+                ],
+                "dependencies": {
+                  "max_impressions": [
+                    "per",
+                    "window"
+                  ],
+                  "per": [
+                    "max_impressions"
+                  ],
+                  "window": [
+                    "max_impressions"
+                  ]
+                },
+                "additionalProperties": true
+              },
+              "property_list": {
+                "title": "Property List Reference",
+                "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the property list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the property list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "collection_list": {
+                "title": "Collection List Reference",
+                "description": "Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the collection list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the collection list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "collection_list_exclude": {
+                "title": "Collection List Reference",
+                "description": "Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+                "type": "object",
+                "properties": {
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the agent managing the collection list"
+                  },
+                  "list_id": {
+                    "type": "string",
+                    "description": "Identifier for the collection list within the agent",
+                    "minLength": 1
+                  },
+                  "auth_token": {
+                    "type": "string",
+                    "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                  }
+                },
+                "required": [
+                  "agent_url",
+                  "list_id"
+                ],
+                "additionalProperties": false
+              },
+              "age_restriction": {
+                "type": "object",
+                "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
+                "properties": {
+                  "min": {
+                    "type": "integer",
+                    "minimum": 13,
+                    "maximum": 99,
+                    "description": "Minimum age required"
+                  },
+                  "verification_required": {
+                    "type": "boolean",
+                    "default": false,
+                    "description": "Whether verified age (not inferred) is required for compliance"
+                  },
+                  "accepted_methods": {
+                    "type": "array",
+                    "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
+                    "items": {
+                      "title": "Age Verification Method",
+                      "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+                      "type": "string",
+                      "enum": [
+                        "facial_age_estimation",
+                        "id_document",
+                        "digital_id",
+                        "credit_card",
+                        "world_id"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "min"
+                ],
+                "additionalProperties": false
+              },
+              "device_platform": {
+                "type": "array",
+                "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
+                "items": {
+                  "title": "Device Platform",
+                  "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
+                  "type": "string",
+                  "enum": [
+                    "ios",
+                    "android",
+                    "windows",
+                    "macos",
+                    "linux",
+                    "chromeos",
+                    "tvos",
+                    "tizen",
+                    "webos",
+                    "fire_os",
+                    "roku_os",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "device_type": {
+                "type": "array",
+                "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+                "items": {
+                  "title": "Device Type",
+                  "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                  "type": "string",
+                  "enum": [
+                    "desktop",
+                    "mobile",
+                    "tablet",
+                    "ctv",
+                    "dooh",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "device_type_exclude": {
+                "type": "array",
+                "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+                "items": {
+                  "title": "Device Type",
+                  "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                  "type": "string",
+                  "enum": [
+                    "desktop",
+                    "mobile",
+                    "tablet",
+                    "ctv",
+                    "dooh",
+                    "unknown"
+                  ]
+                },
+                "minItems": 1
+              },
+              "store_catchments": {
+                "type": "array",
+                "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "catalog_id": {
+                      "type": "string",
+                      "description": "Synced store-type catalog ID from sync_catalogs."
+                    },
+                    "store_ids": {
+                      "type": "array",
+                      "description": "Filter to specific stores within the catalog. Omit to target all stores.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    },
+                    "catchment_ids": {
+                      "type": "array",
+                      "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "catalog_id"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "geo_proximity": {
+                "type": "array",
+                "description": "Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics \u2014 a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "lat": {
+                      "type": "number",
+                      "minimum": -90,
+                      "maximum": 90,
+                      "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                    },
+                    "lng": {
+                      "type": "number",
+                      "minimum": -180,
+                      "maximum": 180,
+                      "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                    },
+                    "label": {
+                      "type": "string",
+                      "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area')."
+                    },
+                    "travel_time": {
+                      "type": "object",
+                      "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
+                      "properties": {
+                        "value": {
+                          "type": "number",
+                          "minimum": 1,
+                          "description": "Travel time limit."
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "min",
+                            "hr"
+                          ],
+                          "description": "Time unit."
+                        }
+                      },
+                      "required": [
+                        "value",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "transport_mode": {
+                      "title": "Transport Mode",
+                      "description": "Transportation mode for isochrone calculation. Required when travel_time is provided.",
+                      "type": "string",
+                      "enum": [
+                        "walking",
+                        "cycling",
+                        "driving",
+                        "public_transport"
+                      ],
+                      "enumDescriptions": {
+                        "walking": "Pedestrian travel on walkable paths and sidewalks",
+                        "cycling": "Bicycle travel on roads and cycle paths",
+                        "driving": "Motor vehicle travel on road networks",
+                        "public_transport": "Public transit including bus, rail, metro, and ferry"
+                      }
+                    },
+                    "radius": {
+                      "type": "object",
+                      "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
+                      "properties": {
+                        "value": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Radius distance."
+                        },
+                        "unit": {
+                          "title": "Distance Unit",
+                          "description": "Distance unit.",
+                          "type": "string",
+                          "enum": [
+                            "km",
+                            "mi",
+                            "m"
+                          ],
+                          "enumDescriptions": {
+                            "km": "Kilometers",
+                            "mi": "Miles",
+                            "m": "Meters"
+                          }
+                        }
+                      },
+                      "required": [
+                        "value",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "geometry": {
+                      "type": "object",
+                      "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
+                      "properties": {
+                        "type": {
+                          "type": "string",
+                          "enum": [
+                            "Polygon",
+                            "MultiPolygon"
+                          ],
+                          "description": "GeoJSON geometry type."
+                        },
+                        "coordinates": {
+                          "type": "array",
+                          "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "coordinates"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "oneOf": [
+                    {
+                      "required": [
+                        "lat",
+                        "lng",
+                        "travel_time",
+                        "transport_mode"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "radius"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "geometry"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "required": [
+                        "lat",
+                        "lng",
+                        "radius"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "travel_time"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "geometry"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "required": [
+                        "geometry"
+                      ],
+                      "not": {
+                        "anyOf": [
+                          {
+                            "required": [
+                              "travel_time"
+                            ]
+                          },
+                          {
+                            "required": [
+                              "radius"
+                            ]
+                          }
+                        ]
+                      }
+                    }
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "language": {
+                "type": "array",
+                "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[a-z]{2}$"
+                },
+                "minItems": 1
+              },
+              "keyword_targets": {
+                "type": "array",
+                "description": "Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) \u2014 the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "keyword": {
+                      "type": "string",
+                      "minLength": 1,
+                      "description": "The keyword to target"
+                    },
+                    "match_type": {
+                      "type": "string",
+                      "enum": [
+                        "broad",
+                        "phrase",
+                        "exact"
+                      ],
+                      "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly"
+                    },
+                    "bid_price": {
+                      "type": "number",
+                      "minimum": 0,
+                      "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies."
+                    }
+                  },
+                  "required": [
+                    "keyword",
+                    "match_type"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "negative_keywords": {
+                "type": "array",
+                "description": "Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "keyword": {
+                      "type": "string",
+                      "minLength": 1,
+                      "description": "The keyword to exclude"
+                    },
+                    "match_type": {
+                      "type": "string",
+                      "enum": [
+                        "broad",
+                        "phrase",
+                        "exact"
+                      ],
+                      "description": "Match type for exclusion"
+                    }
+                  },
+                  "required": [
+                    "keyword",
+                    "match_type"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              }
+            },
+            "additionalProperties": true
+          },
+          "measurement_terms": {
+            "title": "Measurement Terms",
+            "description": "Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply.",
+            "type": "object",
+            "properties": {
+              "billing_measurement": {
+                "type": "object",
+                "description": "Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV).",
+                "properties": {
+                  "vendor": {
+                    "title": "Brand Reference",
+                    "description": "Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+                    "type": "object",
+                    "properties": {
+                      "domain": {
+                        "type": "string",
+                        "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                        "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                      },
+                      "brand_id": {
+                        "title": "Brand ID",
+                        "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "tide",
+                          "cheerios",
+                          "air_jordan",
+                          "nike",
+                          "pampers"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "domain"
+                    ],
+                    "additionalProperties": false,
+                    "examples": [
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "spark"
+                      },
+                      {
+                        "domain": "nova-brands.com",
+                        "brand_id": "glow"
+                      },
+                      {
+                        "domain": "acme-corp.com"
+                      }
+                    ]
+                  },
+                  "max_variance_percent": {
+                    "type": "number",
+                    "minimum": 0,
+                    "exclusiveMaximum": 100,
+                    "description": "Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review)."
+                  },
+                  "measurement_window": {
+                    "type": "string",
+                    "description": "Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+                    "examples": [
+                      "live",
+                      "c3",
+                      "c7",
+                      "tentative",
+                      "final",
+                      "post_ivt",
+                      "post_sivt",
+                      "downloads_30d"
+                    ]
+                  }
+                },
+                "required": [
+                  "vendor"
+                ],
+                "additionalProperties": true
+              },
+              "makegood_policy": {
+                "type": "object",
+                "description": "Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.",
+                "properties": {
+                  "available_remedies": {
+                    "type": "array",
+                    "description": "Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.",
+                    "items": {
+                      "title": "Makegood Remedy",
+                      "description": "Remedy types available when a performance standard or billing measurement threshold is breached.",
+                      "type": "string",
+                      "enum": [
+                        "additional_delivery",
+                        "credit",
+                        "invoice_adjustment"
+                      ],
+                      "enumDescriptions": {
+                        "additional_delivery": "Seller extends or adds impressions to compensate for the shortfall. Delivery is like-for-like on the same campaign or a subsequent campaign within the same account.",
+                        "credit": "Seller issues a credit toward future media buys on the same account.",
+                        "invoice_adjustment": "Seller reduces the invoice for the current media buy to reflect actual delivered value."
+                      }
+                    },
+                    "minItems": 1,
+                    "uniqueItems": true
+                  }
+                },
+                "required": [
+                  "available_remedies"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "additionalProperties": true
+          },
+          "performance_standards": {
+            "type": "array",
+            "description": "Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+            "items": {
+              "title": "Performance Standard",
+              "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+              "type": "object",
+              "properties": {
+                "metric": {
+                  "title": "Performance Standard Metric",
+                  "description": "The performance metric this standard applies to.",
+                  "type": "string",
+                  "enum": [
+                    "viewability",
+                    "ivt",
+                    "completion_rate",
+                    "brand_safety",
+                    "attention_score"
+                  ],
+                  "enumDescriptions": {
+                    "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+                    "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+                    "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                    "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                    "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+                  }
+                },
+                "threshold": {
+                  "type": "number",
+                  "minimum": 0,
+                  "maximum": 1,
+                  "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+                },
+                "standard": {
+                  "title": "Viewability Standard",
+                  "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+                  "type": "string",
+                  "enum": [
+                    "mrc",
+                    "groupm"
+                  ],
+                  "enumDescriptions": {
+                    "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                    "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                  }
+                },
+                "vendor": {
+                  "title": "Brand Reference",
+                  "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+                  "type": "object",
+                  "properties": {
+                    "domain": {
+                      "type": "string",
+                      "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "brand_id": {
+                      "title": "Brand ID",
+                      "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "tide",
+                        "cheerios",
+                        "air_jordan",
+                        "nike",
+                        "pampers"
+                      ]
+                    }
+                  },
+                  "required": [
+                    "domain"
+                  ],
+                  "additionalProperties": false,
+                  "examples": [
+                    {
+                      "domain": "nova-brands.com",
+                      "brand_id": "spark"
+                    },
+                    {
+                      "domain": "nova-brands.com",
+                      "brand_id": "glow"
+                    },
+                    {
+                      "domain": "acme-corp.com"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "metric",
+                "threshold",
+                "vendor"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "creative_assignments": {
+            "type": "array",
+            "description": "Assign existing library creatives to this package with optional weights and placement targeting",
+            "items": {
+              "title": "Creative Assignment",
+              "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
+              "type": "object",
+              "properties": {
+                "creative_id": {
+                  "type": "string",
+                  "description": "Unique identifier for the creative"
+                },
+                "weight": {
+                  "type": "number",
+                  "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+                  "minimum": 0,
+                  "maximum": 100
+                },
+                "placement_ids": {
+                  "type": "array",
+                  "description": "Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                }
+              },
+              "required": [
+                "creative_id"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1
+          },
+          "creatives": {
+            "type": "array",
+            "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
+            "items": {
+              "title": "Creative Asset",
+              "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party snippets",
+              "type": "object",
+              "properties": {
+                "creative_id": {
+                  "type": "string",
+                  "description": "Unique identifier for the creative"
+                },
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable creative name"
+                },
+                "format_id": {
+                  "title": "Format ID",
+                  "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.",
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                    },
+                    "id": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$",
+                      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "duration_ms": {
+                      "type": "number",
+                      "minimum": 1,
+                      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                    }
+                  },
+                  "required": [
+                    "agent_url",
+                    "id"
+                  ],
+                  "additionalProperties": true,
+                  "dependencies": {
+                    "width": [
+                      "height"
+                    ],
+                    "height": [
+                      "width"
+                    ]
+                  }
+                },
+                "assets": {
+                  "type": "object",
+                  "description": "Assets required by the format, keyed by asset_id",
+                  "patternProperties": {
+                    "^[a-z0-9_]+$": {
+                      "anyOf": [
+                        {
+                          "title": "Image Asset",
+                          "description": "Image asset with URL and dimensions",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the image asset"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels"
+                            },
+                            "format": {
+                              "type": "string",
+                              "description": "Image file format (jpg, png, gif, webp, etc.)"
+                            },
+                            "alt_text": {
+                              "type": "string",
+                              "description": "Alternative text for accessibility",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "width",
+                            "height"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Video Asset",
+                          "description": "Video asset with URL and technical specifications including audio track properties",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the video asset"
+                            },
+                            "width": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Width in pixels"
+                            },
+                            "height": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Height in pixels"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Video duration in milliseconds",
+                              "minimum": 1
+                            },
+                            "file_size_bytes": {
+                              "type": "integer",
+                              "description": "File size in bytes",
+                              "minimum": 1
+                            },
+                            "container_format": {
+                              "type": "string",
+                              "description": "Video container format (mp4, webm, mov, etc.)"
+                            },
+                            "video_codec": {
+                              "type": "string",
+                              "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
+                            },
+                            "video_bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Video stream bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "frame_rate": {
+                              "type": "string",
+                              "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+                            },
+                            "frame_rate_type": {
+                              "type": "string",
+                              "enum": [
+                                "constant",
+                                "variable"
+                              ],
+                              "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
+                            },
+                            "scan_type": {
+                              "type": "string",
+                              "enum": [
+                                "progressive",
+                                "interlaced"
+                              ],
+                              "description": "Scan type of the video"
+                            },
+                            "color_space": {
+                              "type": "string",
+                              "enum": [
+                                "rec709",
+                                "rec2020",
+                                "rec2100",
+                                "srgb",
+                                "dci_p3"
+                              ],
+                              "description": "Color space of the video"
+                            },
+                            "hdr_format": {
+                              "type": "string",
+                              "enum": [
+                                "sdr",
+                                "hdr10",
+                                "hdr10_plus",
+                                "hlg",
+                                "dolby_vision"
+                              ],
+                              "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
+                            },
+                            "chroma_subsampling": {
+                              "type": "string",
+                              "enum": [
+                                "4:2:0",
+                                "4:2:2",
+                                "4:4:4"
+                              ],
+                              "description": "Chroma subsampling format"
+                            },
+                            "video_bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                8,
+                                10,
+                                12
+                              ],
+                              "description": "Video bit depth"
+                            },
+                            "gop_interval_seconds": {
+                              "type": "number",
+                              "description": "GOP/keyframe interval in seconds"
+                            },
+                            "gop_type": {
+                              "type": "string",
+                              "enum": [
+                                "closed",
+                                "open"
+                              ],
+                              "description": "GOP structure type"
+                            },
+                            "moov_atom_position": {
+                              "type": "string",
+                              "enum": [
+                                "start",
+                                "end"
+                              ],
+                              "description": "Position of moov atom in MP4 container"
+                            },
+                            "has_audio": {
+                              "type": "boolean",
+                              "description": "Whether the video contains an audio track"
+                            },
+                            "audio_codec": {
+                              "type": "string",
+                              "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+                            },
+                            "audio_sampling_rate_hz": {
+                              "type": "integer",
+                              "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+                            },
+                            "audio_channels": {
+                              "type": "string",
+                              "enum": [
+                                "mono",
+                                "stereo",
+                                "5.1",
+                                "7.1"
+                              ],
+                              "description": "Audio channel configuration"
+                            },
+                            "audio_bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                16,
+                                24,
+                                32
+                              ],
+                              "description": "Audio bit depth"
+                            },
+                            "audio_bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Audio bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "audio_loudness_lufs": {
+                              "type": "number",
+                              "description": "Integrated loudness in LUFS"
+                            },
+                            "audio_true_peak_dbfs": {
+                              "type": "number",
+                              "description": "True peak level in dBFS"
+                            },
+                            "captions_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to captions file (WebVTT, SRT, etc.)",
+                              "x-accessibility": true
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the video content",
+                              "x-accessibility": true
+                            },
+                            "audio_description_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to audio description track for visually impaired users",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "width",
+                            "height"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Audio Asset",
+                          "description": "Audio asset with URL and technical specifications",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to the audio asset"
+                            },
+                            "duration_ms": {
+                              "type": "integer",
+                              "description": "Audio duration in milliseconds",
+                              "minimum": 0
+                            },
+                            "file_size_bytes": {
+                              "type": "integer",
+                              "description": "File size in bytes",
+                              "minimum": 1
+                            },
+                            "container_format": {
+                              "type": "string",
+                              "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+                            },
+                            "codec": {
+                              "type": "string",
+                              "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+                            },
+                            "sampling_rate_hz": {
+                              "type": "integer",
+                              "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
+                            },
+                            "channels": {
+                              "type": "string",
+                              "enum": [
+                                "mono",
+                                "stereo",
+                                "5.1",
+                                "7.1"
+                              ],
+                              "description": "Channel configuration"
+                            },
+                            "bit_depth": {
+                              "type": "integer",
+                              "enum": [
+                                16,
+                                24,
+                                32
+                              ],
+                              "description": "Bit depth"
+                            },
+                            "bitrate_kbps": {
+                              "type": "integer",
+                              "description": "Bitrate in kilobits per second",
+                              "minimum": 1
+                            },
+                            "loudness_lufs": {
+                              "type": "number",
+                              "description": "Integrated loudness in LUFS"
+                            },
+                            "true_peak_dbfs": {
+                              "type": "number",
+                              "description": "True peak level in dBFS"
+                            },
+                            "transcript_url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL to text transcript of the audio content",
+                              "x-accessibility": true
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "VAST Asset",
+                          "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "url",
+                                  "description": "Discriminator indicating VAST is delivered via URL endpoint"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL endpoint that returns VAST XML"
+                                },
+                                "vast_version": {
+                                  "title": "VAST Version",
+                                  "description": "VAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "2.0",
+                                    "3.0",
+                                    "4.0",
+                                    "4.1",
+                                    "4.2"
+                                  ]
+                                },
+                                "vpaid_enabled": {
+                                  "type": "boolean",
+                                  "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected video duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "VAST Tracking Event",
+                                    "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "rewind",
+                                      "skip",
+                                      "playerExpand",
+                                      "playerCollapse",
+                                      "fullscreen",
+                                      "exitFullscreen",
+                                      "progress",
+                                      "notUsed",
+                                      "otherAdInteraction",
+                                      "interactiveStart",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "closeLinear",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this VAST tag"
+                                },
+                                "captions_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                  "x-accessibility": true
+                                },
+                                "audio_description_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to audio description track for visually impaired users",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "inline",
+                                  "description": "Discriminator indicating VAST is delivered as inline XML content"
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Inline VAST XML content"
+                                },
+                                "vast_version": {
+                                  "title": "VAST Version",
+                                  "description": "VAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "2.0",
+                                    "3.0",
+                                    "4.0",
+                                    "4.1",
+                                    "4.2"
+                                  ]
+                                },
+                                "vpaid_enabled": {
+                                  "type": "boolean",
+                                  "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected video duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "VAST Tracking Event",
+                                    "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "rewind",
+                                      "skip",
+                                      "playerExpand",
+                                      "playerCollapse",
+                                      "fullscreen",
+                                      "exitFullscreen",
+                                      "progress",
+                                      "notUsed",
+                                      "otherAdInteraction",
+                                      "interactiveStart",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "closeLinear",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this VAST tag"
+                                },
+                                "captions_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to captions file (WebVTT, SRT, etc.)",
+                                  "x-accessibility": true
+                                },
+                                "audio_description_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to audio description track for visually impaired users",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "content"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Text Asset",
+                          "description": "Text content asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "Text content"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "Language code (e.g., 'en', 'es', 'fr')"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "URL Asset",
+                          "description": "URL reference asset",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "URL reference"
+                            },
+                            "url_type": {
+                              "title": "URL Asset Type",
+                              "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+                              "type": "string",
+                              "enum": [
+                                "clickthrough",
+                                "tracker_pixel",
+                                "tracker_script"
+                              ]
+                            },
+                            "description": {
+                              "type": "string",
+                              "description": "Description of what this URL points to"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "HTML Asset",
+                          "description": "HTML content asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "HTML content"
+                            },
+                            "version": {
+                              "type": "string",
+                              "description": "HTML version (e.g., 'HTML5')"
+                            },
+                            "accessibility": {
+                              "type": "object",
+                              "description": "Self-declared accessibility properties for this opaque creative",
+                              "x-accessibility": true,
+                              "properties": {
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Text alternative describing the creative content"
+                                },
+                                "keyboard_navigable": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative can be fully operated via keyboard"
+                                },
+                                "motion_control": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                },
+                                "screen_reader_tested": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative has been tested with screen readers"
+                                }
+                              }
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "JavaScript Asset",
+                          "description": "JavaScript code asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "JavaScript content"
+                            },
+                            "module_type": {
+                              "title": "JavaScript Module Type",
+                              "description": "JavaScript module type",
+                              "type": "string",
+                              "enum": [
+                                "esm",
+                                "commonjs",
+                                "script"
+                              ]
+                            },
+                            "accessibility": {
+                              "type": "object",
+                              "description": "Self-declared accessibility properties for this opaque creative",
+                              "x-accessibility": true,
+                              "properties": {
+                                "alt_text": {
+                                  "type": "string",
+                                  "description": "Text alternative describing the creative content"
+                                },
+                                "keyboard_navigable": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative can be fully operated via keyboard"
+                                },
+                                "motion_control": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
+                                },
+                                "screen_reader_tested": {
+                                  "type": "boolean",
+                                  "description": "Whether the creative has been tested with screen readers"
+                                }
+                              }
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Webhook Asset",
+                          "description": "Webhook for server-side dynamic content rendering (DCO)",
+                          "type": "object",
+                          "properties": {
+                            "url": {
+                              "type": "string",
+                              "format": "uri",
+                              "description": "Webhook URL to call for dynamic content"
+                            },
+                            "method": {
+                              "title": "HTTP Method",
+                              "description": "HTTP method",
+                              "type": "string",
+                              "enum": [
+                                "GET",
+                                "POST"
+                              ],
+                              "default": "POST"
+                            },
+                            "timeout_ms": {
+                              "type": "integer",
+                              "minimum": 10,
+                              "maximum": 5000,
+                              "default": 500,
+                              "description": "Maximum time to wait for response in milliseconds"
+                            },
+                            "supported_macros": {
+                              "type": "array",
+                              "items": {
+                                "oneOf": [
+                                  {
+                                    "title": "Universal Macro",
+                                    "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                    "type": "string",
+                                    "enum": [
+                                      "MEDIA_BUY_ID",
+                                      "PACKAGE_ID",
+                                      "CREATIVE_ID",
+                                      "CACHEBUSTER",
+                                      "TIMESTAMP",
+                                      "CLICK_URL",
+                                      "GDPR",
+                                      "GDPR_CONSENT",
+                                      "US_PRIVACY",
+                                      "GPP_STRING",
+                                      "GPP_SID",
+                                      "IP_ADDRESS",
+                                      "LIMIT_AD_TRACKING",
+                                      "DEVICE_TYPE",
+                                      "OS",
+                                      "OS_VERSION",
+                                      "DEVICE_MAKE",
+                                      "DEVICE_MODEL",
+                                      "USER_AGENT",
+                                      "APP_BUNDLE",
+                                      "APP_NAME",
+                                      "COUNTRY",
+                                      "REGION",
+                                      "CITY",
+                                      "ZIP",
+                                      "DMA",
+                                      "LAT",
+                                      "LONG",
+                                      "DEVICE_ID",
+                                      "DEVICE_ID_TYPE",
+                                      "DOMAIN",
+                                      "PAGE_URL",
+                                      "REFERRER",
+                                      "KEYWORDS",
+                                      "PLACEMENT_ID",
+                                      "FOLD_POSITION",
+                                      "AD_WIDTH",
+                                      "AD_HEIGHT",
+                                      "VIDEO_ID",
+                                      "VIDEO_TITLE",
+                                      "VIDEO_DURATION",
+                                      "VIDEO_CATEGORY",
+                                      "CONTENT_GENRE",
+                                      "CONTENT_RATING",
+                                      "PLAYER_WIDTH",
+                                      "PLAYER_HEIGHT",
+                                      "POD_POSITION",
+                                      "POD_SIZE",
+                                      "AD_BREAK_ID",
+                                      "STATION_ID",
+                                      "COLLECTION_NAME",
+                                      "INSTALLMENT_ID",
+                                      "AUDIO_DURATION",
+                                      "TMPX",
+                                      "AXEM",
+                                      "CATALOG_ID",
+                                      "SKU",
+                                      "GTIN",
+                                      "OFFERING_ID",
+                                      "JOB_ID",
+                                      "HOTEL_ID",
+                                      "FLIGHT_ID",
+                                      "VEHICLE_ID",
+                                      "LISTING_ID",
+                                      "STORE_ID",
+                                      "PROGRAM_ID",
+                                      "DESTINATION_ID",
+                                      "CREATIVE_VARIANT_ID",
+                                      "APP_ITEM_ID"
+                                    ],
+                                    "enumDescriptions": {
+                                      "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                      "PACKAGE_ID": "AdCP package identifier",
+                                      "CREATIVE_ID": "AdCP creative identifier",
+                                      "CACHEBUSTER": "Random number to prevent caching",
+                                      "TIMESTAMP": "Unix timestamp in milliseconds",
+                                      "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                      "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                      "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                      "US_PRIVACY": "US Privacy (CCPA) string",
+                                      "GPP_STRING": "Global Privacy Platform consent string",
+                                      "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                      "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                      "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                      "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                      "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                      "OS_VERSION": "OS version number",
+                                      "DEVICE_MAKE": "Device manufacturer",
+                                      "DEVICE_MODEL": "Device model identifier",
+                                      "USER_AGENT": "Full user agent string",
+                                      "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                      "APP_NAME": "Human-readable app name",
+                                      "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                      "REGION": "State/province/region code",
+                                      "CITY": "City name",
+                                      "ZIP": "Postal code",
+                                      "DMA": "Nielsen DMA code (US TV markets)",
+                                      "LAT": "Latitude coordinate",
+                                      "LONG": "Longitude coordinate",
+                                      "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                      "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                      "DOMAIN": "Domain where ad is shown",
+                                      "PAGE_URL": "Full page URL (encoded)",
+                                      "REFERRER": "HTTP referrer URL",
+                                      "KEYWORDS": "Page keywords (comma-separated)",
+                                      "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                      "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                      "AD_WIDTH": "Ad slot width in pixels",
+                                      "AD_HEIGHT": "Ad slot height in pixels",
+                                      "VIDEO_ID": "Content video identifier",
+                                      "VIDEO_TITLE": "Content video title",
+                                      "VIDEO_DURATION": "Content duration in seconds",
+                                      "VIDEO_CATEGORY": "IAB content category",
+                                      "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                      "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                      "PLAYER_WIDTH": "Video player width in pixels",
+                                      "PLAYER_HEIGHT": "Video player height in pixels",
+                                      "POD_POSITION": "Position within ad break",
+                                      "POD_SIZE": "Total ads in the ad break",
+                                      "AD_BREAK_ID": "Unique ad break identifier",
+                                      "STATION_ID": "Radio station or podcast identifier",
+                                      "COLLECTION_NAME": "Program or collection name",
+                                      "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                      "AUDIO_DURATION": "Audio content duration in seconds",
+                                      "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                      "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                      "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                      "SKU": "Product SKU identifier for the catalog item being rendered",
+                                      "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                      "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                      "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                      "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                      "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                      "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                      "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                      "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                      "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                      "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                      "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                      "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                    }
+                                  },
+                                  {
+                                    "type": "string",
+                                    "description": "Custom or publisher-specific macro name"
+                                  }
+                                ]
+                              },
+                              "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
+                            },
+                            "required_macros": {
+                              "type": "array",
+                              "items": {
+                                "oneOf": [
+                                  {
+                                    "title": "Universal Macro",
+                                    "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+                                    "type": "string",
+                                    "enum": [
+                                      "MEDIA_BUY_ID",
+                                      "PACKAGE_ID",
+                                      "CREATIVE_ID",
+                                      "CACHEBUSTER",
+                                      "TIMESTAMP",
+                                      "CLICK_URL",
+                                      "GDPR",
+                                      "GDPR_CONSENT",
+                                      "US_PRIVACY",
+                                      "GPP_STRING",
+                                      "GPP_SID",
+                                      "IP_ADDRESS",
+                                      "LIMIT_AD_TRACKING",
+                                      "DEVICE_TYPE",
+                                      "OS",
+                                      "OS_VERSION",
+                                      "DEVICE_MAKE",
+                                      "DEVICE_MODEL",
+                                      "USER_AGENT",
+                                      "APP_BUNDLE",
+                                      "APP_NAME",
+                                      "COUNTRY",
+                                      "REGION",
+                                      "CITY",
+                                      "ZIP",
+                                      "DMA",
+                                      "LAT",
+                                      "LONG",
+                                      "DEVICE_ID",
+                                      "DEVICE_ID_TYPE",
+                                      "DOMAIN",
+                                      "PAGE_URL",
+                                      "REFERRER",
+                                      "KEYWORDS",
+                                      "PLACEMENT_ID",
+                                      "FOLD_POSITION",
+                                      "AD_WIDTH",
+                                      "AD_HEIGHT",
+                                      "VIDEO_ID",
+                                      "VIDEO_TITLE",
+                                      "VIDEO_DURATION",
+                                      "VIDEO_CATEGORY",
+                                      "CONTENT_GENRE",
+                                      "CONTENT_RATING",
+                                      "PLAYER_WIDTH",
+                                      "PLAYER_HEIGHT",
+                                      "POD_POSITION",
+                                      "POD_SIZE",
+                                      "AD_BREAK_ID",
+                                      "STATION_ID",
+                                      "COLLECTION_NAME",
+                                      "INSTALLMENT_ID",
+                                      "AUDIO_DURATION",
+                                      "TMPX",
+                                      "AXEM",
+                                      "CATALOG_ID",
+                                      "SKU",
+                                      "GTIN",
+                                      "OFFERING_ID",
+                                      "JOB_ID",
+                                      "HOTEL_ID",
+                                      "FLIGHT_ID",
+                                      "VEHICLE_ID",
+                                      "LISTING_ID",
+                                      "STORE_ID",
+                                      "PROGRAM_ID",
+                                      "DESTINATION_ID",
+                                      "CREATIVE_VARIANT_ID",
+                                      "APP_ITEM_ID"
+                                    ],
+                                    "enumDescriptions": {
+                                      "MEDIA_BUY_ID": "AdCP media buy identifier",
+                                      "PACKAGE_ID": "AdCP package identifier",
+                                      "CREATIVE_ID": "AdCP creative identifier",
+                                      "CACHEBUSTER": "Random number to prevent caching",
+                                      "TIMESTAMP": "Unix timestamp in milliseconds",
+                                      "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
+                                      "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
+                                      "GDPR_CONSENT": "IAB TCF 2.0 consent string",
+                                      "US_PRIVACY": "US Privacy (CCPA) string",
+                                      "GPP_STRING": "Global Privacy Platform consent string",
+                                      "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+                                      "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
+                                      "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
+                                      "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
+                                      "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
+                                      "OS_VERSION": "OS version number",
+                                      "DEVICE_MAKE": "Device manufacturer",
+                                      "DEVICE_MODEL": "Device model identifier",
+                                      "USER_AGENT": "Full user agent string",
+                                      "APP_BUNDLE": "App bundle ID (domain or numeric)",
+                                      "APP_NAME": "Human-readable app name",
+                                      "COUNTRY": "ISO 3166-1 alpha-2 country code",
+                                      "REGION": "State/province/region code",
+                                      "CITY": "City name",
+                                      "ZIP": "Postal code",
+                                      "DMA": "Nielsen DMA code (US TV markets)",
+                                      "LAT": "Latitude coordinate",
+                                      "LONG": "Longitude coordinate",
+                                      "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+                                      "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+                                      "DOMAIN": "Domain where ad is shown",
+                                      "PAGE_URL": "Full page URL (encoded)",
+                                      "REFERRER": "HTTP referrer URL",
+                                      "KEYWORDS": "Page keywords (comma-separated)",
+                                      "PLACEMENT_ID": "Global Placement ID (IAB standard)",
+                                      "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+                                      "AD_WIDTH": "Ad slot width in pixels",
+                                      "AD_HEIGHT": "Ad slot height in pixels",
+                                      "VIDEO_ID": "Content video identifier",
+                                      "VIDEO_TITLE": "Content video title",
+                                      "VIDEO_DURATION": "Content duration in seconds",
+                                      "VIDEO_CATEGORY": "IAB content category",
+                                      "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+                                      "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
+                                      "PLAYER_WIDTH": "Video player width in pixels",
+                                      "PLAYER_HEIGHT": "Video player height in pixels",
+                                      "POD_POSITION": "Position within ad break",
+                                      "POD_SIZE": "Total ads in the ad break",
+                                      "AD_BREAK_ID": "Unique ad break identifier",
+                                      "STATION_ID": "Radio station or podcast identifier",
+                                      "COLLECTION_NAME": "Program or collection name",
+                                      "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+                                      "AUDIO_DURATION": "Audio content duration in seconds",
+                                      "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+                                      "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+                                      "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+                                      "SKU": "Product SKU identifier for the catalog item being rendered",
+                                      "GTIN": "Global Trade Item Number for the catalog item being rendered",
+                                      "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+                                      "JOB_ID": "Job posting identifier for the catalog item being rendered",
+                                      "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+                                      "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
+                                      "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
+                                      "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+                                      "STORE_ID": "Store location identifier for the catalog item being rendered",
+                                      "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+                                      "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+                                      "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+                                      "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+                                    }
+                                  },
+                                  {
+                                    "type": "string",
+                                    "description": "Custom or publisher-specific macro name"
+                                  }
+                                ]
+                              },
+                              "description": "Universal macros that must be provided for webhook to function"
+                            },
+                            "response_type": {
+                              "title": "Webhook Response Type",
+                              "description": "Expected content type of webhook response",
+                              "type": "string",
+                              "enum": [
+                                "html",
+                                "json",
+                                "xml",
+                                "javascript"
+                              ]
+                            },
+                            "security": {
+                              "type": "object",
+                              "description": "Security configuration for webhook calls",
+                              "properties": {
+                                "method": {
+                                  "title": "Webhook Security Method",
+                                  "description": "Authentication method",
+                                  "type": "string",
+                                  "enum": [
+                                    "hmac_sha256",
+                                    "api_key",
+                                    "none"
+                                  ]
+                                },
+                                "hmac_header": {
+                                  "type": "string",
+                                  "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+                                },
+                                "api_key_header": {
+                                  "type": "string",
+                                  "description": "Header name for API key (e.g., 'X-API-Key')"
+                                }
+                              },
+                              "required": [
+                                "method"
+                              ]
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "url",
+                            "response_type",
+                            "security"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "CSS Asset",
+                          "description": "CSS stylesheet asset",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "CSS content"
+                            },
+                            "media": {
+                              "type": "string",
+                              "description": "CSS media query context (e.g., 'screen', 'print')"
+                            },
+                            "provenance": {
+                              "title": "Provenance",
+                              "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                              "type": "object",
+                              "properties": {
+                                "digital_source_type": {
+                                  "title": "Digital Source Type",
+                                  "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                  "type": "string",
+                                  "enum": [
+                                    "digital_capture",
+                                    "digital_creation",
+                                    "trained_algorithmic_media",
+                                    "composite_with_trained_algorithmic_media",
+                                    "algorithmic_media",
+                                    "composite_capture",
+                                    "composite_synthetic",
+                                    "human_edits",
+                                    "data_driven_media"
+                                  ],
+                                  "enumDescriptions": {
+                                    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                    "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                    "composite_capture": "Multiple digital captures composited together without AI",
+                                    "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                    "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                  }
+                                },
+                                "ai_tool": {
+                                  "type": "object",
+                                  "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                  "properties": {
+                                    "name": {
+                                      "type": "string",
+                                      "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                    },
+                                    "version": {
+                                      "type": "string",
+                                      "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                    },
+                                    "provider": {
+                                      "type": "string",
+                                      "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                    }
+                                  },
+                                  "required": [
+                                    "name"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "human_oversight": {
+                                  "type": "string",
+                                  "description": "Level of human involvement in the AI-assisted creation process",
+                                  "enum": [
+                                    "none",
+                                    "prompt_only",
+                                    "selected",
+                                    "edited",
+                                    "directed"
+                                  ],
+                                  "enumDescriptions": {
+                                    "none": "Fully automated with no human involvement in generation",
+                                    "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                    "selected": "Human selected from multiple AI-generated candidates",
+                                    "edited": "Human edited or refined AI-generated output",
+                                    "directed": "Human directed the creative process with AI as an assistive tool"
+                                  }
+                                },
+                                "declared_by": {
+                                  "type": "object",
+                                  "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                  "properties": {
+                                    "agent_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL of the agent or service that declared this provenance"
+                                    },
+                                    "role": {
+                                      "type": "string",
+                                      "enum": [
+                                        "creator",
+                                        "advertiser",
+                                        "agency",
+                                        "platform",
+                                        "tool"
+                                      ],
+                                      "description": "Role of the declaring party in the supply chain",
+                                      "enumDescriptions": {
+                                        "creator": "The party that created or generated the content",
+                                        "advertiser": "The brand or advertiser that owns the content",
+                                        "agency": "Agency acting on behalf of the advertiser",
+                                        "platform": "Ad platform or publisher that processed the content",
+                                        "tool": "Automated tool or service that attached provenance metadata"
+                                      }
+                                    }
+                                  },
+                                  "required": [
+                                    "role"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "declared_at": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                },
+                                "created_time": {
+                                  "type": "string",
+                                  "format": "date-time",
+                                  "description": "When this content was created or generated (ISO 8601)"
+                                },
+                                "c2pa": {
+                                  "type": "object",
+                                  "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                  "properties": {
+                                    "manifest_url": {
+                                      "type": "string",
+                                      "format": "uri",
+                                      "description": "URL to the C2PA manifest store for this content"
+                                    }
+                                  },
+                                  "required": [
+                                    "manifest_url"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "disclosure": {
+                                  "type": "object",
+                                  "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                  "properties": {
+                                    "required": {
+                                      "type": "boolean",
+                                      "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                    },
+                                    "jurisdictions": {
+                                      "type": "array",
+                                      "description": "Jurisdictions where disclosure obligations apply",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "country": {
+                                            "type": "string",
+                                            "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                          },
+                                          "region": {
+                                            "type": "string",
+                                            "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                          },
+                                          "label_text": {
+                                            "type": "string",
+                                            "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                          },
+                                          "render_guidance": {
+                                            "type": "object",
+                                            "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                            "minProperties": 1,
+                                            "properties": {
+                                              "persistence": {
+                                                "title": "Disclosure Persistence",
+                                                "description": "How long the disclosure must persist during content playback or display",
+                                                "type": "string",
+                                                "enum": [
+                                                  "continuous",
+                                                  "initial",
+                                                  "flexible"
+                                                ],
+                                                "enumDescriptions": {
+                                                  "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                  "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                  "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                }
+                                              },
+                                              "min_duration_ms": {
+                                                "type": "integer",
+                                                "minimum": 1,
+                                                "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                              },
+                                              "positions": {
+                                                "type": "array",
+                                                "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                "items": {
+                                                  "title": "Disclosure Position",
+                                                  "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                  "type": "string",
+                                                  "enum": [
+                                                    "prominent",
+                                                    "footer",
+                                                    "audio",
+                                                    "subtitle",
+                                                    "overlay",
+                                                    "end_card",
+                                                    "pre_roll",
+                                                    "companion"
+                                                  ]
+                                                },
+                                                "minItems": 1,
+                                                "uniqueItems": true
+                                              },
+                                              "ext": {
+                                                "title": "Extension Object",
+                                                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                "type": "object",
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "additionalProperties": true
+                                          }
+                                        },
+                                        "required": [
+                                          "country",
+                                          "regulation"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "required": [
+                                    "required"
+                                  ],
+                                  "additionalProperties": true
+                                },
+                                "verification": {
+                                  "type": "array",
+                                  "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                  "minItems": 1,
+                                  "items": {
+                                    "type": "object",
+                                    "properties": {
+                                      "verified_by": {
+                                        "type": "string",
+                                        "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                      },
+                                      "verified_time": {
+                                        "type": "string",
+                                        "format": "date-time",
+                                        "description": "When the verification was performed (ISO 8601)"
+                                      },
+                                      "result": {
+                                        "type": "string",
+                                        "enum": [
+                                          "authentic",
+                                          "ai_generated",
+                                          "ai_modified",
+                                          "inconclusive"
+                                        ],
+                                        "description": "Verification outcome"
+                                      },
+                                      "confidence": {
+                                        "type": "number",
+                                        "minimum": 0,
+                                        "maximum": 1,
+                                        "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                      },
+                                      "details_url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the full verification report"
+                                      }
+                                    },
+                                    "required": [
+                                      "verified_by",
+                                      "result"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "ext": {
+                                  "title": "Extension Object",
+                                  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                  "type": "object",
+                                  "additionalProperties": true
+                                }
+                              },
+                              "additionalProperties": true
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "DAAST Asset",
+                          "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "url",
+                                  "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL endpoint that returns DAAST XML"
+                                },
+                                "daast_version": {
+                                  "title": "DAAST Version",
+                                  "description": "DAAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "1.0",
+                                    "1.1"
+                                  ]
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected audio duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "DAAST Tracking Event",
+                                    "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "skip",
+                                      "progress",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this DAAST tag"
+                                },
+                                "companion_ads": {
+                                  "type": "boolean",
+                                  "description": "Whether companion display ads are included"
+                                },
+                                "transcript_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to text transcript of the audio content",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "url"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "properties": {
+                                "delivery_type": {
+                                  "type": "string",
+                                  "const": "inline",
+                                  "description": "Discriminator indicating DAAST is delivered as inline XML content"
+                                },
+                                "content": {
+                                  "type": "string",
+                                  "description": "Inline DAAST XML content"
+                                },
+                                "daast_version": {
+                                  "title": "DAAST Version",
+                                  "description": "DAAST specification version",
+                                  "type": "string",
+                                  "enum": [
+                                    "1.0",
+                                    "1.1"
+                                  ]
+                                },
+                                "duration_ms": {
+                                  "type": "integer",
+                                  "description": "Expected audio duration in milliseconds (if known)",
+                                  "minimum": 0
+                                },
+                                "tracking_events": {
+                                  "type": "array",
+                                  "items": {
+                                    "title": "DAAST Tracking Event",
+                                    "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+                                    "type": "string",
+                                    "enum": [
+                                      "impression",
+                                      "creativeView",
+                                      "loaded",
+                                      "start",
+                                      "firstQuartile",
+                                      "midpoint",
+                                      "thirdQuartile",
+                                      "complete",
+                                      "mute",
+                                      "unmute",
+                                      "pause",
+                                      "resume",
+                                      "skip",
+                                      "progress",
+                                      "clickTracking",
+                                      "customClick",
+                                      "close",
+                                      "error",
+                                      "viewable",
+                                      "notViewable",
+                                      "viewUndetermined",
+                                      "measurableImpression",
+                                      "viewableImpression"
+                                    ]
+                                  },
+                                  "description": "Tracking events supported by this DAAST tag"
+                                },
+                                "companion_ads": {
+                                  "type": "boolean",
+                                  "description": "Whether companion display ads are included"
+                                },
+                                "transcript_url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to text transcript of the audio content",
+                                  "x-accessibility": true
+                                },
+                                "provenance": {
+                                  "title": "Provenance",
+                                  "description": "Provenance metadata for this asset, overrides manifest-level provenance",
+                                  "type": "object",
+                                  "properties": {
+                                    "digital_source_type": {
+                                      "title": "Digital Source Type",
+                                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                                      "type": "string",
+                                      "enum": [
+                                        "digital_capture",
+                                        "digital_creation",
+                                        "trained_algorithmic_media",
+                                        "composite_with_trained_algorithmic_media",
+                                        "algorithmic_media",
+                                        "composite_capture",
+                                        "composite_synthetic",
+                                        "human_edits",
+                                        "data_driven_media"
+                                      ],
+                                      "enumDescriptions": {
+                                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                                        "composite_capture": "Multiple digital captures composited together without AI",
+                                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                                      }
+                                    },
+                                    "ai_tool": {
+                                      "type": "object",
+                                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                                      "properties": {
+                                        "name": {
+                                          "type": "string",
+                                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                                        },
+                                        "version": {
+                                          "type": "string",
+                                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                                        },
+                                        "provider": {
+                                          "type": "string",
+                                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                                        }
+                                      },
+                                      "required": [
+                                        "name"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "human_oversight": {
+                                      "type": "string",
+                                      "description": "Level of human involvement in the AI-assisted creation process",
+                                      "enum": [
+                                        "none",
+                                        "prompt_only",
+                                        "selected",
+                                        "edited",
+                                        "directed"
+                                      ],
+                                      "enumDescriptions": {
+                                        "none": "Fully automated with no human involvement in generation",
+                                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                                        "selected": "Human selected from multiple AI-generated candidates",
+                                        "edited": "Human edited or refined AI-generated output",
+                                        "directed": "Human directed the creative process with AI as an assistive tool"
+                                      }
+                                    },
+                                    "declared_by": {
+                                      "type": "object",
+                                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                                      "properties": {
+                                        "agent_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL of the agent or service that declared this provenance"
+                                        },
+                                        "role": {
+                                          "type": "string",
+                                          "enum": [
+                                            "creator",
+                                            "advertiser",
+                                            "agency",
+                                            "platform",
+                                            "tool"
+                                          ],
+                                          "description": "Role of the declaring party in the supply chain",
+                                          "enumDescriptions": {
+                                            "creator": "The party that created or generated the content",
+                                            "advertiser": "The brand or advertiser that owns the content",
+                                            "agency": "Agency acting on behalf of the advertiser",
+                                            "platform": "Ad platform or publisher that processed the content",
+                                            "tool": "Automated tool or service that attached provenance metadata"
+                                          }
+                                        }
+                                      },
+                                      "required": [
+                                        "role"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "declared_at": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                                    },
+                                    "created_time": {
+                                      "type": "string",
+                                      "format": "date-time",
+                                      "description": "When this content was created or generated (ISO 8601)"
+                                    },
+                                    "c2pa": {
+                                      "type": "object",
+                                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                                      "properties": {
+                                        "manifest_url": {
+                                          "type": "string",
+                                          "format": "uri",
+                                          "description": "URL to the C2PA manifest store for this content"
+                                        }
+                                      },
+                                      "required": [
+                                        "manifest_url"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "disclosure": {
+                                      "type": "object",
+                                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                                      "properties": {
+                                        "required": {
+                                          "type": "boolean",
+                                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                                        },
+                                        "jurisdictions": {
+                                          "type": "array",
+                                          "description": "Jurisdictions where disclosure obligations apply",
+                                          "items": {
+                                            "type": "object",
+                                            "properties": {
+                                              "country": {
+                                                "type": "string",
+                                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                                              },
+                                              "region": {
+                                                "type": "string",
+                                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                                              },
+                                              "regulation": {
+                                                "type": "string",
+                                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                                              },
+                                              "label_text": {
+                                                "type": "string",
+                                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                                              },
+                                              "render_guidance": {
+                                                "type": "object",
+                                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                                "minProperties": 1,
+                                                "properties": {
+                                                  "persistence": {
+                                                    "title": "Disclosure Persistence",
+                                                    "description": "How long the disclosure must persist during content playback or display",
+                                                    "type": "string",
+                                                    "enum": [
+                                                      "continuous",
+                                                      "initial",
+                                                      "flexible"
+                                                    ],
+                                                    "enumDescriptions": {
+                                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                                    }
+                                                  },
+                                                  "min_duration_ms": {
+                                                    "type": "integer",
+                                                    "minimum": 1,
+                                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                                  },
+                                                  "positions": {
+                                                    "type": "array",
+                                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                                    "items": {
+                                                      "title": "Disclosure Position",
+                                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                                      "type": "string",
+                                                      "enum": [
+                                                        "prominent",
+                                                        "footer",
+                                                        "audio",
+                                                        "subtitle",
+                                                        "overlay",
+                                                        "end_card",
+                                                        "pre_roll",
+                                                        "companion"
+                                                      ]
+                                                    },
+                                                    "minItems": 1,
+                                                    "uniqueItems": true
+                                                  },
+                                                  "ext": {
+                                                    "title": "Extension Object",
+                                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                                    "type": "object",
+                                                    "additionalProperties": true
+                                                  }
+                                                },
+                                                "additionalProperties": true
+                                              }
+                                            },
+                                            "required": [
+                                              "country",
+                                              "regulation"
+                                            ],
+                                            "additionalProperties": true
+                                          },
+                                          "minItems": 1
+                                        }
+                                      },
+                                      "required": [
+                                        "required"
+                                      ],
+                                      "additionalProperties": true
+                                    },
+                                    "verification": {
+                                      "type": "array",
+                                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                                      "minItems": 1,
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "verified_by": {
+                                            "type": "string",
+                                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                                          },
+                                          "verified_time": {
+                                            "type": "string",
+                                            "format": "date-time",
+                                            "description": "When the verification was performed (ISO 8601)"
+                                          },
+                                          "result": {
+                                            "type": "string",
+                                            "enum": [
+                                              "authentic",
+                                              "ai_generated",
+                                              "ai_modified",
+                                              "inconclusive"
+                                            ],
+                                            "description": "Verification outcome"
+                                          },
+                                          "confidence": {
+                                            "type": "number",
+                                            "minimum": 0,
+                                            "maximum": 1,
+                                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                                          },
+                                          "details_url": {
+                                            "type": "string",
+                                            "format": "uri",
+                                            "description": "URL to the full verification report"
+                                          }
+                                        },
+                                        "required": [
+                                          "verified_by",
+                                          "result"
+                                        ],
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "ext": {
+                                      "title": "Extension Object",
+                                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                      "type": "object",
+                                      "additionalProperties": true
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "delivery_type",
+                                "content"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Markdown Asset",
+                          "description": "Markdown-formatted text content following CommonMark specification",
+                          "type": "object",
+                          "properties": {
+                            "content": {
+                              "type": "string",
+                              "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
+                            },
+                            "language": {
+                              "type": "string",
+                              "description": "Language code (e.g., 'en', 'es', 'fr')"
+                            },
+                            "markdown_flavor": {
+                              "title": "Markdown Flavor",
+                              "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.",
+                              "type": "string",
+                              "enum": [
+                                "commonmark",
+                                "gfm"
+                              ],
+                              "default": "commonmark"
+                            },
+                            "allow_raw_html": {
+                              "type": "boolean",
+                              "default": false,
+                              "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
+                            }
+                          },
+                          "required": [
+                            "content"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "title": "Brief Asset",
+                          "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
+                          "allOf": [
+                            {
+                              "title": "Creative Brief",
+                              "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+                              "type": "object",
+                              "properties": {
+                                "name": {
+                                  "type": "string",
+                                  "description": "Campaign or flight name for identification"
+                                },
+                                "objective": {
+                                  "type": "string",
+                                  "enum": [
+                                    "awareness",
+                                    "consideration",
+                                    "conversion",
+                                    "retention",
+                                    "engagement"
+                                  ],
+                                  "description": "Campaign objective that guides creative tone and call-to-action strategy"
+                                },
+                                "tone": {
+                                  "type": "string",
+                                  "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+                                },
+                                "audience": {
+                                  "type": "string",
+                                  "description": "Target audience description for this campaign"
+                                },
+                                "territory": {
+                                  "type": "string",
+                                  "description": "Creative territory or positioning the campaign should occupy"
+                                },
+                                "messaging": {
+                                  "type": "object",
+                                  "description": "Messaging framework for the campaign",
+                                  "properties": {
+                                    "headline": {
+                                      "type": "string",
+                                      "description": "Primary headline"
+                                    },
+                                    "tagline": {
+                                      "type": "string",
+                                      "description": "Supporting tagline or sub-headline"
+                                    },
+                                    "cta": {
+                                      "type": "string",
+                                      "description": "Call-to-action text"
+                                    },
+                                    "key_messages": {
+                                      "type": "array",
+                                      "description": "Key messages to communicate in priority order",
+                                      "items": {
+                                        "type": "string"
+                                      }
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                },
+                                "reference_assets": {
+                                  "type": "array",
+                                  "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+                                  "items": {
+                                    "title": "Reference Asset",
+                                    "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+                                    "type": "object",
+                                    "properties": {
+                                      "url": {
+                                        "type": "string",
+                                        "format": "uri",
+                                        "description": "URL to the reference asset (image, video, or document)"
+                                      },
+                                      "role": {
+                                        "type": "string",
+                                        "enum": [
+                                          "style_reference",
+                                          "product_shot",
+                                          "mood_board",
+                                          "example_creative",
+                                          "logo",
+                                          "strategy_doc",
+                                          "storyboard"
+                                        ],
+                                        "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
+                                      },
+                                      "description": {
+                                        "type": "string",
+                                        "description": "Human-readable description of the asset and how it should inform creative generation"
+                                      }
+                                    },
+                                    "required": [
+                                      "url",
+                                      "role"
+                                    ],
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "compliance": {
+                                  "type": "object",
+                                  "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+                                  "properties": {
+                                    "required_disclosures": {
+                                      "type": "array",
+                                      "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
+                                      "items": {
+                                        "type": "object",
+                                        "properties": {
+                                          "text": {
+                                            "type": "string",
+                                            "description": "The disclosure text that must appear in the creative"
+                                          },
+                                          "position": {
+                                            "title": "Disclosure Position",
+                                            "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative",
+                                            "type": "string",
+                                            "enum": [
+                                              "prominent",
+                                              "footer",
+                                              "audio",
+                                              "subtitle",
+                                              "overlay",
+                                              "end_card",
+                                              "pre_roll",
+                                              "companion"
+                                            ]
+                                          },
+                                          "jurisdictions": {
+                                            "type": "array",
+                                            "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+                                            "items": {
+                                              "type": "string",
+                                              "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
+                                            },
+                                            "minItems": 1
+                                          },
+                                          "regulation": {
+                                            "type": "string",
+                                            "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+                                          },
+                                          "min_duration_ms": {
+                                            "type": "integer",
+                                            "minimum": 1,
+                                            "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+                                          },
+                                          "language": {
+                                            "type": "string",
+                                            "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+                                          },
+                                          "persistence": {
+                                            "title": "Disclosure Persistence",
+                                            "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.",
+                                            "type": "string",
+                                            "enum": [
+                                              "continuous",
+                                              "initial",
+                                              "flexible"
+                                            ],
+                                            "enumDescriptions": {
+                                              "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                              "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                              "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                            }
+                                          }
+                                        },
+                                        "required": [
+                                          "text"
+                                        ],
+                                        "additionalProperties": true
+                                      },
+                                      "minItems": 1
+                                    },
+                                    "prohibited_claims": {
+                                      "type": "array",
+                                      "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+                                      "items": {
+                                        "type": "string"
+                                      },
+                                      "minItems": 1
+                                    }
+                                  },
+                                  "additionalProperties": true
+                                }
+                              },
+                              "required": [
+                                "name"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        {
+                          "title": "Catalog Asset",
+                          "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
+                          "allOf": [
+                            {
+                              "title": "Catalog",
+                              "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                              "type": "object",
+                              "properties": {
+                                "catalog_id": {
+                                  "type": "string",
+                                  "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                                },
+                                "name": {
+                                  "type": "string",
+                                  "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                                },
+                                "type": {
+                                  "title": "Catalog Type",
+                                  "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                                  "type": "string",
+                                  "enum": [
+                                    "offering",
+                                    "product",
+                                    "inventory",
+                                    "store",
+                                    "promotion",
+                                    "hotel",
+                                    "flight",
+                                    "job",
+                                    "vehicle",
+                                    "real_estate",
+                                    "education",
+                                    "destination",
+                                    "app"
+                                  ]
+                                },
+                                "url": {
+                                  "type": "string",
+                                  "format": "uri",
+                                  "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                                },
+                                "feed_format": {
+                                  "title": "Feed Format",
+                                  "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                                  "type": "string",
+                                  "enum": [
+                                    "google_merchant_center",
+                                    "facebook_catalog",
+                                    "shopify",
+                                    "linkedin_jobs",
+                                    "custom"
+                                  ]
+                                },
+                                "update_frequency": {
+                                  "title": "Update Frequency",
+                                  "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                                  "type": "string",
+                                  "enum": [
+                                    "realtime",
+                                    "hourly",
+                                    "daily",
+                                    "weekly"
+                                  ]
+                                },
+                                "items": {
+                                  "type": "array",
+                                  "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                                  "items": {
+                                    "type": "object"
+                                  },
+                                  "minItems": 1
+                                },
+                                "ids": {
+                                  "type": "array",
+                                  "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                },
+                                "gtins": {
+                                  "type": "array",
+                                  "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                                  "items": {
+                                    "type": "string",
+                                    "pattern": "^[0-9]{8,14}$"
+                                  },
+                                  "minItems": 1
+                                },
+                                "tags": {
+                                  "type": "array",
+                                  "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                                  "items": {
+                                    "type": "string"
+                                  },
+                                  "minItems": 1
+                                },
+                                "category": {
+                                  "type": "string",
+                                  "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                                },
+                                "query": {
+                                  "type": "string",
+                                  "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                                },
+                                "conversion_events": {
+                                  "type": "array",
+                                  "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                                  "items": {
+                                    "title": "Event Type",
+                                    "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                                    "type": "string",
+                                    "enum": [
+                                      "page_view",
+                                      "view_content",
+                                      "select_content",
+                                      "select_item",
+                                      "search",
+                                      "share",
+                                      "add_to_cart",
+                                      "remove_from_cart",
+                                      "viewed_cart",
+                                      "add_to_wishlist",
+                                      "initiate_checkout",
+                                      "add_payment_info",
+                                      "purchase",
+                                      "refund",
+                                      "lead",
+                                      "qualify_lead",
+                                      "close_convert_lead",
+                                      "disqualify_lead",
+                                      "complete_registration",
+                                      "subscribe",
+                                      "start_trial",
+                                      "app_install",
+                                      "app_launch",
+                                      "contact",
+                                      "schedule",
+                                      "donate",
+                                      "submit_application",
+                                      "custom"
+                                    ],
+                                    "enumDescriptions": {
+                                      "page_view": "User viewed a page",
+                                      "view_content": "User viewed specific content (product, article, etc.)",
+                                      "select_content": "User selected or clicked on content (article, video, etc.)",
+                                      "select_item": "User selected a specific product or item from a list",
+                                      "search": "User performed a search",
+                                      "share": "User shared content via social or messaging",
+                                      "add_to_cart": "User added an item to cart",
+                                      "remove_from_cart": "User removed an item from cart",
+                                      "viewed_cart": "User viewed their shopping cart",
+                                      "add_to_wishlist": "User added an item to a wishlist",
+                                      "initiate_checkout": "User started checkout process",
+                                      "add_payment_info": "User added payment information",
+                                      "purchase": "User completed a purchase",
+                                      "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                      "lead": "User expressed interest (form submission, signup, etc.)",
+                                      "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                      "close_convert_lead": "Lead converted to a customer or closed deal",
+                                      "disqualify_lead": "Lead disqualified or marked as not viable",
+                                      "complete_registration": "User completed account registration",
+                                      "subscribe": "User subscribed to a service or newsletter",
+                                      "start_trial": "User started a free trial",
+                                      "app_install": "User installed an application",
+                                      "app_launch": "User launched an application",
+                                      "contact": "User initiated contact (call, message, etc.)",
+                                      "schedule": "User scheduled an appointment or event",
+                                      "donate": "User made a donation",
+                                      "submit_application": "User submitted an application (loan, job, etc.)",
+                                      "custom": "Custom event type (specify in custom_event_name)"
+                                    }
+                                  },
+                                  "minItems": 1,
+                                  "uniqueItems": true
+                                },
+                                "content_id_type": {
+                                  "title": "Content ID Type",
+                                  "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                                  "type": "string",
+                                  "enum": [
+                                    "sku",
+                                    "gtin",
+                                    "offering_id",
+                                    "job_id",
+                                    "hotel_id",
+                                    "flight_id",
+                                    "vehicle_id",
+                                    "listing_id",
+                                    "store_id",
+                                    "program_id",
+                                    "destination_id",
+                                    "app_id"
+                                  ]
+                                },
+                                "feed_field_mappings": {
+                                  "type": "array",
+                                  "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                                  "items": {
+                                    "title": "Catalog Field Mapping",
+                                    "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                                    "type": "object",
+                                    "properties": {
+                                      "feed_field": {
+                                        "type": "string",
+                                        "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                                      },
+                                      "catalog_field": {
+                                        "type": "string",
+                                        "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                                      },
+                                      "asset_group_id": {
+                                        "type": "string",
+                                        "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                                      },
+                                      "value": {
+                                        "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                                      },
+                                      "transform": {
+                                        "type": "string",
+                                        "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                                        "enum": [
+                                          "date",
+                                          "divide",
+                                          "boolean",
+                                          "split"
+                                        ]
+                                      },
+                                      "format": {
+                                        "type": "string",
+                                        "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                                      },
+                                      "timezone": {
+                                        "type": "string",
+                                        "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                                      },
+                                      "by": {
+                                        "type": "number",
+                                        "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                                        "exclusiveMinimum": 0
+                                      },
+                                      "separator": {
+                                        "type": "string",
+                                        "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                                        "default": ","
+                                      },
+                                      "default": {
+                                        "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                                      },
+                                      "ext": {
+                                        "title": "Extension Object",
+                                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                        "type": "object",
+                                        "additionalProperties": true
+                                      }
+                                    },
+                                    "allOf": [
+                                      {
+                                        "not": {
+                                          "required": [
+                                            "feed_field",
+                                            "value"
+                                          ]
+                                        }
+                                      },
+                                      {
+                                        "not": {
+                                          "required": [
+                                            "catalog_field",
+                                            "asset_group_id"
+                                          ]
+                                        }
+                                      }
+                                    ],
+                                    "additionalProperties": true,
+                                    "examples": [
+                                      {
+                                        "description": "Simple field rename",
+                                        "data": {
+                                          "feed_field": "hotel_name",
+                                          "catalog_field": "name"
+                                        }
+                                      },
+                                      {
+                                        "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                                        "data": {
+                                          "feed_field": "available_from",
+                                          "catalog_field": "valid_from",
+                                          "transform": "date",
+                                          "format": "YYYYMMDD",
+                                          "timezone": "UTC"
+                                        }
+                                      },
+                                      {
+                                        "description": "Divide cents to dollars",
+                                        "data": {
+                                          "feed_field": "price_cents",
+                                          "catalog_field": "price.amount",
+                                          "transform": "divide",
+                                          "by": 100
+                                        }
+                                      },
+                                      {
+                                        "description": "Static literal injection \u2014 currency not in feed",
+                                        "data": {
+                                          "catalog_field": "price.currency",
+                                          "value": "USD"
+                                        }
+                                      },
+                                      {
+                                        "description": "Image URL assigned to typed asset pool",
+                                        "data": {
+                                          "feed_field": "primary_photo_url",
+                                          "asset_group_id": "images_landscape"
+                                        }
+                                      },
+                                      {
+                                        "description": "Vertical photo URL assigned to vertical pool",
+                                        "data": {
+                                          "feed_field": "portrait_photo_url",
+                                          "asset_group_id": "images_vertical"
+                                        }
+                                      },
+                                      {
+                                        "description": "Split comma-separated tags to array",
+                                        "data": {
+                                          "feed_field": "amenity_list",
+                                          "catalog_field": "amenities",
+                                          "transform": "split",
+                                          "separator": ","
+                                        }
+                                      },
+                                      {
+                                        "description": "Boolean coercion with default",
+                                        "data": {
+                                          "feed_field": "is_available",
+                                          "catalog_field": "available",
+                                          "transform": "boolean",
+                                          "default": false
+                                        }
+                                      }
+                                    ]
+                                  },
+                                  "minItems": 1
+                                }
+                              },
+                              "required": [
+                                "type"
+                              ],
+                              "additionalProperties": true,
+                              "examples": [
+                                {
+                                  "description": "Synced product catalog from Google Merchant Center",
+                                  "data": {
+                                    "catalog_id": "gmc-primary",
+                                    "name": "Primary Product Feed",
+                                    "type": "product",
+                                    "url": "https://feeds.acmecorp.com/products.xml",
+                                    "feed_format": "google_merchant_center",
+                                    "update_frequency": "daily"
+                                  }
+                                },
+                                {
+                                  "description": "Inventory feed for store-level stock data",
+                                  "data": {
+                                    "catalog_id": "store-inventory",
+                                    "name": "Store Inventory",
+                                    "type": "inventory",
+                                    "url": "https://feeds.acmecorp.com/inventory.json",
+                                    "feed_format": "custom",
+                                    "update_frequency": "hourly"
+                                  }
+                                },
+                                {
+                                  "description": "Store locator feed",
+                                  "data": {
+                                    "catalog_id": "retail-locations",
+                                    "name": "Retail Locations",
+                                    "type": "store",
+                                    "url": "https://feeds.acmecorp.com/stores.json",
+                                    "feed_format": "custom",
+                                    "update_frequency": "weekly"
+                                  }
+                                },
+                                {
+                                  "description": "Promotional pricing feed",
+                                  "data": {
+                                    "catalog_id": "summer-sale",
+                                    "name": "Summer Sale Promotions",
+                                    "type": "promotion",
+                                    "url": "https://feeds.acmecorp.com/promotions.json",
+                                    "feed_format": "google_merchant_center",
+                                    "update_frequency": "daily"
+                                  }
+                                },
+                                {
+                                  "description": "Inline offering catalog (no sync needed)",
+                                  "data": {
+                                    "type": "offering",
+                                    "items": [
+                                      {
+                                        "offering_id": "summer-sale",
+                                        "name": "Summer Sale",
+                                        "landing_url": "https://acme.com/summer"
+                                      }
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Reference to a previously synced catalog by ID",
+                                  "data": {
+                                    "catalog_id": "gmc-primary",
+                                    "type": "product",
+                                    "ids": [
+                                      "SKU-12345",
+                                      "SKU-67890"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                                  "data": {
+                                    "type": "product",
+                                    "gtins": [
+                                      "00013000006040",
+                                      "00013000006057"
+                                    ],
+                                    "content_id_type": "gtin",
+                                    "conversion_events": [
+                                      "purchase",
+                                      "add_to_cart"
+                                    ]
+                                  }
+                                },
+                                {
+                                  "description": "Inline store catalog with catchment areas",
+                                  "data": {
+                                    "catalog_id": "retail-locations",
+                                    "name": "Retail Locations",
+                                    "type": "store",
+                                    "items": [
+                                      {
+                                        "store_id": "amsterdam-flagship",
+                                        "name": "Amsterdam Flagship",
+                                        "location": {
+                                          "lat": 52.3676,
+                                          "lng": 4.9041
+                                        },
+                                        "catchments": [
+                                          {
+                                            "catchment_id": "walk",
+                                            "travel_time": {
+                                              "value": 10,
+                                              "unit": "min"
+                                            },
+                                            "transport_mode": "walking"
+                                          },
+                                          {
+                                            "catchment_id": "drive",
+                                            "travel_time": {
+                                              "value": 15,
+                                              "unit": "min"
+                                            },
+                                            "transport_mode": "driving"
+                                          }
+                                        ]
+                                      }
+                                    ]
+                                  }
+                                }
+                              ]
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  "additionalProperties": true
+                },
+                "inputs": {
+                  "type": "array",
+                  "description": "Preview contexts for generative formats - defines what scenarios to generate previews for",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "name": {
+                        "type": "string",
+                        "description": "Human-readable name for this preview variant"
+                      },
+                      "macros": {
+                        "type": "object",
+                        "description": "Macro values to apply for this preview",
+                        "additionalProperties": {
+                          "type": "string"
+                        }
+                      },
+                      "context_description": {
+                        "type": "string",
+                        "description": "Natural language description of the context for AI-generated content"
+                      }
+                    },
+                    "required": [
+                      "name"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "tags": {
+                  "type": "array",
+                  "description": "User-defined tags for organization and searchability",
+                  "items": {
+                    "type": "string"
+                  }
+                },
+                "status": {
+                  "title": "Creative Status",
+                  "description": "For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+                  "type": "string",
+                  "enum": [
+                    "processing",
+                    "pending_review",
+                    "approved",
+                    "rejected",
+                    "archived"
+                  ],
+                  "enumDescriptions": {
+                    "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
+                    "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+                    "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+                    "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+                    "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+                  }
+                },
+                "weight": {
+                  "type": "number",
+                  "description": "Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.",
+                  "minimum": 0,
+                  "maximum": 100
+                },
+                "placement_ids": {
+                  "type": "array",
+                  "description": "Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+                  "items": {
+                    "type": "string"
+                  },
+                  "minItems": 1
+                },
+                "industry_identifiers": {
+                  "type": "array",
+                  "description": "Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.",
+                  "items": {
+                    "title": "Industry Identifier",
+                    "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                    "type": "object",
+                    "properties": {
+                      "type": {
+                        "title": "Creative Identifier Type",
+                        "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+                        "type": "string",
+                        "enum": [
+                          "ad_id",
+                          "isci",
+                          "clearcast_clock"
+                        ],
+                        "enumDescriptions": {
+                          "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+                          "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+                          "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+                        },
+                        "examples": [
+                          "ad_id",
+                          "isci",
+                          "clearcast_clock"
+                        ]
+                      },
+                      "value": {
+                        "type": "string",
+                        "maxLength": 64,
+                        "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+                      }
+                    },
+                    "required": [
+                      "type",
+                      "value"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "uniqueItems": true
+                },
+                "provenance": {
+                  "title": "Provenance",
+                  "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).",
+                  "type": "object",
+                  "properties": {
+                    "digital_source_type": {
+                      "title": "Digital Source Type",
+                      "description": "IPTC-aligned classification of AI involvement in producing this content",
+                      "type": "string",
+                      "enum": [
+                        "digital_capture",
+                        "digital_creation",
+                        "trained_algorithmic_media",
+                        "composite_with_trained_algorithmic_media",
+                        "algorithmic_media",
+                        "composite_capture",
+                        "composite_synthetic",
+                        "human_edits",
+                        "data_driven_media"
+                      ],
+                      "enumDescriptions": {
+                        "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+                        "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+                        "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+                        "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
+                        "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
+                        "composite_capture": "Multiple digital captures composited together without AI",
+                        "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
+                        "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
+                        "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+                      }
+                    },
+                    "ai_tool": {
+                      "type": "object",
+                      "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
+                      "properties": {
+                        "name": {
+                          "type": "string",
+                          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+                        },
+                        "version": {
+                          "type": "string",
+                          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+                        },
+                        "provider": {
+                          "type": "string",
+                          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+                        }
+                      },
+                      "required": [
+                        "name"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "human_oversight": {
+                      "type": "string",
+                      "description": "Level of human involvement in the AI-assisted creation process",
+                      "enum": [
+                        "none",
+                        "prompt_only",
+                        "selected",
+                        "edited",
+                        "directed"
+                      ],
+                      "enumDescriptions": {
+                        "none": "Fully automated with no human involvement in generation",
+                        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+                        "selected": "Human selected from multiple AI-generated candidates",
+                        "edited": "Human edited or refined AI-generated output",
+                        "directed": "Human directed the creative process with AI as an assistive tool"
+                      }
+                    },
+                    "declared_by": {
+                      "type": "object",
+                      "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
+                      "properties": {
+                        "agent_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL of the agent or service that declared this provenance"
+                        },
+                        "role": {
+                          "type": "string",
+                          "enum": [
+                            "creator",
+                            "advertiser",
+                            "agency",
+                            "platform",
+                            "tool"
+                          ],
+                          "description": "Role of the declaring party in the supply chain",
+                          "enumDescriptions": {
+                            "creator": "The party that created or generated the content",
+                            "advertiser": "The brand or advertiser that owns the content",
+                            "agency": "Agency acting on behalf of the advertiser",
+                            "platform": "Ad platform or publisher that processed the content",
+                            "tool": "Automated tool or service that attached provenance metadata"
+                          }
+                        }
+                      },
+                      "required": [
+                        "role"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "declared_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+                    },
+                    "created_time": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "When this content was created or generated (ISO 8601)"
+                    },
+                    "c2pa": {
+                      "type": "object",
+                      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+                      "properties": {
+                        "manifest_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "URL to the C2PA manifest store for this content"
+                        }
+                      },
+                      "required": [
+                        "manifest_url"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "disclosure": {
+                      "type": "object",
+                      "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
+                      "properties": {
+                        "required": {
+                          "type": "boolean",
+                          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+                        },
+                        "jurisdictions": {
+                          "type": "array",
+                          "description": "Jurisdictions where disclosure obligations apply",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "country": {
+                                "type": "string",
+                                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
+                              },
+                              "region": {
+                                "type": "string",
+                                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
+                              },
+                              "regulation": {
+                                "type": "string",
+                                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+                              },
+                              "label_text": {
+                                "type": "string",
+                                "description": "Required disclosure label text for this jurisdiction, in the local language"
+                              },
+                              "render_guidance": {
+                                "type": "object",
+                                "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
+                                "minProperties": 1,
+                                "properties": {
+                                  "persistence": {
+                                    "title": "Disclosure Persistence",
+                                    "description": "How long the disclosure must persist during content playback or display",
+                                    "type": "string",
+                                    "enum": [
+                                      "continuous",
+                                      "initial",
+                                      "flexible"
+                                    ],
+                                    "enumDescriptions": {
+                                      "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
+                                      "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+                                      "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+                                    }
+                                  },
+                                  "min_duration_ms": {
+                                    "type": "integer",
+                                    "minimum": 1,
+                                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                                  },
+                                  "positions": {
+                                    "type": "array",
+                                    "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
+                                    "items": {
+                                      "title": "Disclosure Position",
+                                      "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+                                      "type": "string",
+                                      "enum": [
+                                        "prominent",
+                                        "footer",
+                                        "audio",
+                                        "subtitle",
+                                        "overlay",
+                                        "end_card",
+                                        "pre_roll",
+                                        "companion"
+                                      ]
+                                    },
+                                    "minItems": 1,
+                                    "uniqueItems": true
+                                  },
+                                  "ext": {
+                                    "title": "Extension Object",
+                                    "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                                    "type": "object",
+                                    "additionalProperties": true
+                                  }
+                                },
+                                "additionalProperties": true
+                              }
+                            },
+                            "required": [
+                              "country",
+                              "regulation"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "required"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "verification": {
+                      "type": "array",
+                      "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+                      "minItems": 1,
+                      "items": {
+                        "type": "object",
+                        "properties": {
+                          "verified_by": {
+                            "type": "string",
+                            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+                          },
+                          "verified_time": {
+                            "type": "string",
+                            "format": "date-time",
+                            "description": "When the verification was performed (ISO 8601)"
+                          },
+                          "result": {
+                            "type": "string",
+                            "enum": [
+                              "authentic",
+                              "ai_generated",
+                              "ai_modified",
+                              "inconclusive"
+                            ],
+                            "description": "Verification outcome"
+                          },
+                          "confidence": {
+                            "type": "number",
+                            "minimum": 0,
+                            "maximum": 1,
+                            "description": "Confidence score of the verification result (0.0 to 1.0)"
+                          },
+                          "details_url": {
+                            "type": "string",
+                            "format": "uri",
+                            "description": "URL to the full verification report"
+                          }
+                        },
+                        "required": [
+                          "verified_by",
+                          "result"
+                        ],
+                        "additionalProperties": true
+                      }
+                    },
+                    "ext": {
+                      "title": "Extension Object",
+                      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                      "type": "object",
+                      "additionalProperties": true
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              },
+              "required": [
+                "creative_id",
+                "name",
+                "format_id",
+                "assets"
+              ],
+              "additionalProperties": true
+            },
+            "minItems": 1,
+            "maxItems": 100
+          },
+          "agency_estimate_number": {
+            "type": "string",
+            "maxLength": 100,
+            "description": "Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy)."
+          },
+          "context": {
+            "title": "Context Object",
+            "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            "type": "object",
+            "additionalProperties": true
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "product_id",
+          "budget",
+          "pricing_option_id"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "reporting_webhook": {
+      "title": "Reporting Webhook",
+      "description": "Optional webhook configuration for automated reporting delivery. Updates the reporting configuration for this media buy.",
+      "type": "object",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for reporting notifications"
+        },
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "title": "Authentication Scheme",
+                "description": "Authentication schemes for push notification endpoints",
+                "type": "string",
+                "enum": [
+                  "Bearer",
+                  "HMAC-SHA256"
+                ]
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        },
+        "reporting_frequency": {
+          "type": "string",
+          "enum": [
+            "hourly",
+            "daily",
+            "monthly"
+          ],
+          "description": "Frequency for automated reporting delivery. Must be supported by all products in the media buy."
+        },
+        "requested_metrics": {
+          "type": "array",
+          "description": "Optional list of metrics to include in webhook notifications. If omitted, all available metrics are included. Must be subset of product's available_metrics.",
+          "items": {
+            "title": "Available Metric",
+            "description": "Standard delivery and performance metrics available for reporting",
+            "type": "string",
+            "enum": [
+              "impressions",
+              "spend",
+              "clicks",
+              "ctr",
+              "video_completions",
+              "completion_rate",
+              "conversions",
+              "conversion_value",
+              "roas",
+              "cost_per_acquisition",
+              "new_to_brand_rate",
+              "viewability",
+              "engagement_rate",
+              "views",
+              "completed_views",
+              "leads",
+              "reach",
+              "frequency",
+              "grps",
+              "quartile_data",
+              "dooh_metrics",
+              "cost_per_click"
+            ]
+          },
+          "uniqueItems": true
+        }
+      },
+      "required": [
+        "url",
+        "authentication",
+        "reporting_frequency"
+      ],
+      "additionalProperties": true
+    },
+    "push_notification_config": {
+      "title": "Push Notification Config",
+      "description": "Optional webhook configuration for async update notifications. Publisher will send webhook when update completes if operation takes longer than immediate response time. This is separate from reporting_webhook which configures ongoing campaign reporting.",
+      "type": "object",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for task status notifications"
+        },
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "title": "Authentication Scheme",
+                "description": "Authentication schemes for push notification endpoints",
+                "type": "string",
+                "enum": [
+                  "Bearer",
+                  "HMAC-SHA256"
+                ]
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        }
+      },
+      "required": [
+        "url",
+        "authentication"
+      ]
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated idempotency key for safe retries. If an update fails without a response, resending with the same idempotency_key guarantees the update is applied at most once. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account",
+    "media_buy_id"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.442Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/media-buy/update-media-buy-response.json b/schemas/cache/bundled/media-buy/update-media-buy-response.json
new file mode 100644
index 000000000..fb10bb435
--- /dev/null
+++ b/schemas/cache/bundled/media-buy/update-media-buy-response.json
@@ -0,0 +1,2790 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Media Buy Response",
+  "description": "Response payload for update_media_buy task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - updates are either fully applied or not applied at all.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "UpdateMediaBuySuccess",
+      "description": "Success response - media buy updated successfully",
+      "type": "object",
+      "properties": {
+        "media_buy_id": {
+          "type": "string",
+          "description": "Seller's identifier for the media buy"
+        },
+        "status": {
+          "title": "Media Buy Status",
+          "description": "Media buy status after the update. Present when the update changes the media buy's status (e.g., cancellation transitions to 'canceled', pause transitions to 'paused').",
+          "type": "string",
+          "enum": [
+            "pending_creatives",
+            "pending_start",
+            "active",
+            "paused",
+            "completed",
+            "rejected",
+            "canceled"
+          ],
+          "enumDescriptions": {
+            "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+            "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
+            "active": "Media buy is currently running",
+            "paused": "Media buy is temporarily paused",
+            "completed": "Media buy has finished running",
+            "rejected": "Media buy was declined by the seller after creation",
+            "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+          }
+        },
+        "revision": {
+          "type": "integer",
+          "description": "Revision number after this update. Use this value in subsequent update_media_buy requests for optimistic concurrency.",
+          "minimum": 1
+        },
+        "implementation_date": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when changes take effect (null if pending approval)"
+        },
+        "invoice_recipient": {
+          "title": "Business Entity",
+          "description": "Updated invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).",
+          "type": "object",
+          "properties": {
+            "legal_name": {
+              "type": "string",
+              "description": "Registered legal name of the business entity",
+              "maxLength": 200
+            },
+            "vat_id": {
+              "type": "string",
+              "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+              "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+            },
+            "tax_id": {
+              "type": "string",
+              "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+              "maxLength": 30
+            },
+            "registration_number": {
+              "type": "string",
+              "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+              "maxLength": 50
+            },
+            "address": {
+              "type": "object",
+              "description": "Postal address for invoicing and legal correspondence",
+              "properties": {
+                "street": {
+                  "type": "string",
+                  "description": "Street address including building number",
+                  "maxLength": 200
+                },
+                "city": {
+                  "type": "string",
+                  "maxLength": 100
+                },
+                "postal_code": {
+                  "type": "string",
+                  "maxLength": 20
+                },
+                "region": {
+                  "type": "string",
+                  "description": "State, province, or region",
+                  "maxLength": 100
+                },
+                "country": {
+                  "type": "string",
+                  "description": "ISO 3166-1 alpha-2 country code",
+                  "pattern": "^[A-Z]{2}$"
+                }
+              },
+              "required": [
+                "street",
+                "city",
+                "postal_code",
+                "country"
+              ],
+              "additionalProperties": false
+            },
+            "contacts": {
+              "type": "array",
+              "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "role": {
+                    "type": "string",
+                    "enum": [
+                      "billing",
+                      "legal",
+                      "creative",
+                      "general"
+                    ],
+                    "enumDescriptions": {
+                      "billing": "Accounts payable and invoice queries",
+                      "legal": "Contract and compliance matters",
+                      "creative": "Material submission and creative approval",
+                      "general": "Default contact when no specific role applies"
+                    },
+                    "description": "Contact's functional role in the business relationship"
+                  },
+                  "name": {
+                    "type": "string",
+                    "description": "Full name of the contact",
+                    "maxLength": 200
+                  },
+                  "email": {
+                    "type": "string",
+                    "format": "email",
+                    "maxLength": 254
+                  },
+                  "phone": {
+                    "type": "string",
+                    "maxLength": 30
+                  }
+                },
+                "required": [
+                  "role"
+                ],
+                "additionalProperties": false
+              },
+              "maxItems": 10
+            },
+            "bank": {
+              "type": "object",
+              "writeOnly": true,
+              "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+              "properties": {
+                "account_holder": {
+                  "type": "string",
+                  "description": "Name on the bank account",
+                  "maxLength": 200
+                },
+                "iban": {
+                  "type": "string",
+                  "description": "International Bank Account Number (SEPA markets)",
+                  "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+                },
+                "bic": {
+                  "type": "string",
+                  "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+                  "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+                },
+                "routing_number": {
+                  "type": "string",
+                  "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+                  "maxLength": 30
+                },
+                "account_number": {
+                  "type": "string",
+                  "description": "Bank account number for non-SEPA markets",
+                  "maxLength": 30
+                }
+              },
+              "required": [
+                "account_holder"
+              ],
+              "additionalProperties": false
+            },
+            "ext": {
+              "title": "Extension Object",
+              "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+              "type": "object",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "legal_name"
+          ],
+          "additionalProperties": false,
+          "examples": [
+            {
+              "description": "German agency with full B2B details",
+              "data": {
+                "legal_name": "Pinnacle Media GmbH",
+                "vat_id": "DE123456789",
+                "registration_number": "HRB 12345",
+                "address": {
+                  "street": "Friedrichstrasse 100",
+                  "city": "Berlin",
+                  "postal_code": "10117",
+                  "country": "DE"
+                },
+                "contacts": [
+                  {
+                    "role": "billing",
+                    "name": "Sam Adeyemi",
+                    "email": "billing@pinnacle-media.com",
+                    "phone": "+49 30 12345678"
+                  }
+                ],
+                "bank": {
+                  "account_holder": "Pinnacle Media GmbH",
+                  "iban": "DE89370400440532013000",
+                  "bic": "COBADEFFXXX"
+                }
+              }
+            },
+            {
+              "description": "US advertiser with EIN and domestic bank details",
+              "data": {
+                "legal_name": "Acme Corporation",
+                "tax_id": "12-3456789",
+                "address": {
+                  "street": "123 Main St",
+                  "city": "New York",
+                  "postal_code": "10001",
+                  "region": "NY",
+                  "country": "US"
+                },
+                "contacts": [
+                  {
+                    "role": "billing",
+                    "name": "AP Department",
+                    "email": "ap@acme-corp.com"
+                  }
+                ],
+                "bank": {
+                  "account_holder": "Acme Corporation",
+                  "routing_number": "021000021",
+                  "account_number": "123456789"
+                }
+              }
+            }
+          ]
+        },
+        "affected_packages": {
+          "type": "array",
+          "description": "Array of packages that were modified with complete state information",
+          "items": {
+            "title": "Package",
+            "description": "A specific product within a media buy (line item)",
+            "type": "object",
+            "properties": {
+              "package_id": {
+                "type": "string",
+                "description": "Seller's unique identifier for the package"
+              },
+              "product_id": {
+                "type": "string",
+                "description": "ID of the product this package is based on"
+              },
+              "budget": {
+                "type": "number",
+                "description": "Budget allocation for this package in the currency specified by the pricing option",
+                "minimum": 0
+              },
+              "pacing": {
+                "title": "Pacing",
+                "description": "Budget pacing strategy",
+                "type": "string",
+                "enum": [
+                  "even",
+                  "asap",
+                  "front_loaded"
+                ],
+                "enumDescriptions": {
+                  "even": "Allocate remaining budget evenly over remaining campaign duration (default)",
+                  "asap": "Spend remaining budget as quickly as possible",
+                  "front_loaded": "Allocate more remaining budget earlier in the remaining campaign period"
+                }
+              },
+              "pricing_option_id": {
+                "type": "string",
+                "description": "ID of the selected pricing option from the product's pricing_options array"
+              },
+              "bid_price": {
+                "type": "number",
+                "description": "Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+                "minimum": 0
+              },
+              "price_breakdown": {
+                "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+                "title": "Price Breakdown",
+                "type": "object",
+                "properties": {
+                  "list_price": {
+                    "type": "number",
+                    "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+                    "exclusiveMinimum": 0
+                  },
+                  "adjustments": {
+                    "type": "array",
+                    "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "kind": {
+                          "title": "Price Adjustment Kind",
+                          "description": "Categorizes how a price adjustment affects the transaction",
+                          "type": "string",
+                          "enum": [
+                            "fee",
+                            "discount",
+                            "commission",
+                            "settlement"
+                          ],
+                          "enumDescriptions": {
+                            "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+                            "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+                            "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
+                            "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
+                          }
+                        },
+                        "name": {
+                          "type": "string",
+                          "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+                          "maxLength": 64,
+                          "examples": [
+                            "ad_serving",
+                            "data_targeting",
+                            "brand_safety",
+                            "volume",
+                            "negotiated",
+                            "early_booking",
+                            "agency",
+                            "intermediary",
+                            "cash_discount",
+                            "early_payment"
+                          ]
+                        },
+                        "rate": {
+                          "type": "number",
+                          "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
+                          "exclusiveMinimum": 0,
+                          "exclusiveMaximum": 1
+                        },
+                        "amount": {
+                          "type": "number",
+                          "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+                          "exclusiveMinimum": 0
+                        },
+                        "description": {
+                          "type": "string",
+                          "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+                          "maxLength": 256
+                        },
+                        "beneficiary": {
+                          "type": "string",
+                          "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+                          "maxLength": 256
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "name"
+                      ],
+                      "oneOf": [
+                        {
+                          "required": [
+                            "rate"
+                          ]
+                        },
+                        {
+                          "required": [
+                            "amount"
+                          ]
+                        }
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1,
+                    "maxItems": 20
+                  }
+                },
+                "required": [
+                  "list_price",
+                  "adjustments"
+                ],
+                "additionalProperties": true
+              },
+              "impressions": {
+                "type": "number",
+                "description": "Impression goal for this package",
+                "minimum": 0
+              },
+              "catalogs": {
+                "type": "array",
+                "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Echoed from the create_media_buy request.",
+                "items": {
+                  "title": "Catalog",
+                  "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+                  "type": "object",
+                  "properties": {
+                    "catalog_id": {
+                      "type": "string",
+                      "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+                    },
+                    "name": {
+                      "type": "string",
+                      "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+                    },
+                    "type": {
+                      "title": "Catalog Type",
+                      "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema.",
+                      "type": "string",
+                      "enum": [
+                        "offering",
+                        "product",
+                        "inventory",
+                        "store",
+                        "promotion",
+                        "hotel",
+                        "flight",
+                        "job",
+                        "vehicle",
+                        "real_estate",
+                        "education",
+                        "destination",
+                        "app"
+                      ]
+                    },
+                    "url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+                    },
+                    "feed_format": {
+                      "title": "Feed Format",
+                      "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.",
+                      "type": "string",
+                      "enum": [
+                        "google_merchant_center",
+                        "facebook_catalog",
+                        "shopify",
+                        "linkedin_jobs",
+                        "custom"
+                      ]
+                    },
+                    "update_frequency": {
+                      "title": "Update Frequency",
+                      "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.",
+                      "type": "string",
+                      "enum": [
+                        "realtime",
+                        "hourly",
+                        "daily",
+                        "weekly"
+                      ]
+                    },
+                    "items": {
+                      "type": "array",
+                      "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+                      "items": {
+                        "type": "object"
+                      },
+                      "minItems": 1
+                    },
+                    "ids": {
+                      "type": "array",
+                      "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    },
+                    "gtins": {
+                      "type": "array",
+                      "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+                      "items": {
+                        "type": "string",
+                        "pattern": "^[0-9]{8,14}$"
+                      },
+                      "minItems": 1
+                    },
+                    "tags": {
+                      "type": "array",
+                      "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    },
+                    "category": {
+                      "type": "string",
+                      "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+                    },
+                    "query": {
+                      "type": "string",
+                      "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+                    },
+                    "conversion_events": {
+                      "type": "array",
+                      "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+                      "items": {
+                        "title": "Event Type",
+                        "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                        "type": "string",
+                        "enum": [
+                          "page_view",
+                          "view_content",
+                          "select_content",
+                          "select_item",
+                          "search",
+                          "share",
+                          "add_to_cart",
+                          "remove_from_cart",
+                          "viewed_cart",
+                          "add_to_wishlist",
+                          "initiate_checkout",
+                          "add_payment_info",
+                          "purchase",
+                          "refund",
+                          "lead",
+                          "qualify_lead",
+                          "close_convert_lead",
+                          "disqualify_lead",
+                          "complete_registration",
+                          "subscribe",
+                          "start_trial",
+                          "app_install",
+                          "app_launch",
+                          "contact",
+                          "schedule",
+                          "donate",
+                          "submit_application",
+                          "custom"
+                        ],
+                        "enumDescriptions": {
+                          "page_view": "User viewed a page",
+                          "view_content": "User viewed specific content (product, article, etc.)",
+                          "select_content": "User selected or clicked on content (article, video, etc.)",
+                          "select_item": "User selected a specific product or item from a list",
+                          "search": "User performed a search",
+                          "share": "User shared content via social or messaging",
+                          "add_to_cart": "User added an item to cart",
+                          "remove_from_cart": "User removed an item from cart",
+                          "viewed_cart": "User viewed their shopping cart",
+                          "add_to_wishlist": "User added an item to a wishlist",
+                          "initiate_checkout": "User started checkout process",
+                          "add_payment_info": "User added payment information",
+                          "purchase": "User completed a purchase",
+                          "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                          "lead": "User expressed interest (form submission, signup, etc.)",
+                          "qualify_lead": "Lead qualified by sales or scoring criteria",
+                          "close_convert_lead": "Lead converted to a customer or closed deal",
+                          "disqualify_lead": "Lead disqualified or marked as not viable",
+                          "complete_registration": "User completed account registration",
+                          "subscribe": "User subscribed to a service or newsletter",
+                          "start_trial": "User started a free trial",
+                          "app_install": "User installed an application",
+                          "app_launch": "User launched an application",
+                          "contact": "User initiated contact (call, message, etc.)",
+                          "schedule": "User scheduled an appointment or event",
+                          "donate": "User made a donation",
+                          "submit_application": "User submitted an application (loan, job, etc.)",
+                          "custom": "Custom event type (specify in custom_event_name)"
+                        }
+                      },
+                      "minItems": 1,
+                      "uniqueItems": true
+                    },
+                    "content_id_type": {
+                      "title": "Content ID Type",
+                      "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+                      "type": "string",
+                      "enum": [
+                        "sku",
+                        "gtin",
+                        "offering_id",
+                        "job_id",
+                        "hotel_id",
+                        "flight_id",
+                        "vehicle_id",
+                        "listing_id",
+                        "store_id",
+                        "program_id",
+                        "destination_id",
+                        "app_id"
+                      ]
+                    },
+                    "feed_field_mappings": {
+                      "type": "array",
+                      "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+                      "items": {
+                        "title": "Catalog Field Mapping",
+                        "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+                        "type": "object",
+                        "properties": {
+                          "feed_field": {
+                            "type": "string",
+                            "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+                          },
+                          "catalog_field": {
+                            "type": "string",
+                            "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+                          },
+                          "asset_group_id": {
+                            "type": "string",
+                            "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+                          },
+                          "value": {
+                            "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+                          },
+                          "transform": {
+                            "type": "string",
+                            "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+                            "enum": [
+                              "date",
+                              "divide",
+                              "boolean",
+                              "split"
+                            ]
+                          },
+                          "format": {
+                            "type": "string",
+                            "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+                          },
+                          "timezone": {
+                            "type": "string",
+                            "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+                          },
+                          "by": {
+                            "type": "number",
+                            "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+                            "exclusiveMinimum": 0
+                          },
+                          "separator": {
+                            "type": "string",
+                            "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+                            "default": ","
+                          },
+                          "default": {
+                            "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+                          },
+                          "ext": {
+                            "title": "Extension Object",
+                            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                            "type": "object",
+                            "additionalProperties": true
+                          }
+                        },
+                        "allOf": [
+                          {
+                            "not": {
+                              "required": [
+                                "feed_field",
+                                "value"
+                              ]
+                            }
+                          },
+                          {
+                            "not": {
+                              "required": [
+                                "catalog_field",
+                                "asset_group_id"
+                              ]
+                            }
+                          }
+                        ],
+                        "additionalProperties": true,
+                        "examples": [
+                          {
+                            "description": "Simple field rename",
+                            "data": {
+                              "feed_field": "hotel_name",
+                              "catalog_field": "name"
+                            }
+                          },
+                          {
+                            "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
+                            "data": {
+                              "feed_field": "available_from",
+                              "catalog_field": "valid_from",
+                              "transform": "date",
+                              "format": "YYYYMMDD",
+                              "timezone": "UTC"
+                            }
+                          },
+                          {
+                            "description": "Divide cents to dollars",
+                            "data": {
+                              "feed_field": "price_cents",
+                              "catalog_field": "price.amount",
+                              "transform": "divide",
+                              "by": 100
+                            }
+                          },
+                          {
+                            "description": "Static literal injection \u2014 currency not in feed",
+                            "data": {
+                              "catalog_field": "price.currency",
+                              "value": "USD"
+                            }
+                          },
+                          {
+                            "description": "Image URL assigned to typed asset pool",
+                            "data": {
+                              "feed_field": "primary_photo_url",
+                              "asset_group_id": "images_landscape"
+                            }
+                          },
+                          {
+                            "description": "Vertical photo URL assigned to vertical pool",
+                            "data": {
+                              "feed_field": "portrait_photo_url",
+                              "asset_group_id": "images_vertical"
+                            }
+                          },
+                          {
+                            "description": "Split comma-separated tags to array",
+                            "data": {
+                              "feed_field": "amenity_list",
+                              "catalog_field": "amenities",
+                              "transform": "split",
+                              "separator": ","
+                            }
+                          },
+                          {
+                            "description": "Boolean coercion with default",
+                            "data": {
+                              "feed_field": "is_available",
+                              "catalog_field": "available",
+                              "transform": "boolean",
+                              "default": false
+                            }
+                          }
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "type"
+                  ],
+                  "additionalProperties": true,
+                  "examples": [
+                    {
+                      "description": "Synced product catalog from Google Merchant Center",
+                      "data": {
+                        "catalog_id": "gmc-primary",
+                        "name": "Primary Product Feed",
+                        "type": "product",
+                        "url": "https://feeds.acmecorp.com/products.xml",
+                        "feed_format": "google_merchant_center",
+                        "update_frequency": "daily"
+                      }
+                    },
+                    {
+                      "description": "Inventory feed for store-level stock data",
+                      "data": {
+                        "catalog_id": "store-inventory",
+                        "name": "Store Inventory",
+                        "type": "inventory",
+                        "url": "https://feeds.acmecorp.com/inventory.json",
+                        "feed_format": "custom",
+                        "update_frequency": "hourly"
+                      }
+                    },
+                    {
+                      "description": "Store locator feed",
+                      "data": {
+                        "catalog_id": "retail-locations",
+                        "name": "Retail Locations",
+                        "type": "store",
+                        "url": "https://feeds.acmecorp.com/stores.json",
+                        "feed_format": "custom",
+                        "update_frequency": "weekly"
+                      }
+                    },
+                    {
+                      "description": "Promotional pricing feed",
+                      "data": {
+                        "catalog_id": "summer-sale",
+                        "name": "Summer Sale Promotions",
+                        "type": "promotion",
+                        "url": "https://feeds.acmecorp.com/promotions.json",
+                        "feed_format": "google_merchant_center",
+                        "update_frequency": "daily"
+                      }
+                    },
+                    {
+                      "description": "Inline offering catalog (no sync needed)",
+                      "data": {
+                        "type": "offering",
+                        "items": [
+                          {
+                            "offering_id": "summer-sale",
+                            "name": "Summer Sale",
+                            "landing_url": "https://acme.com/summer"
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "description": "Reference to a previously synced catalog by ID",
+                      "data": {
+                        "catalog_id": "gmc-primary",
+                        "type": "product",
+                        "ids": [
+                          "SKU-12345",
+                          "SKU-67890"
+                        ]
+                      }
+                    },
+                    {
+                      "description": "Product catalog with GTIN cross-retailer matching and attribution",
+                      "data": {
+                        "type": "product",
+                        "gtins": [
+                          "00013000006040",
+                          "00013000006057"
+                        ],
+                        "content_id_type": "gtin",
+                        "conversion_events": [
+                          "purchase",
+                          "add_to_cart"
+                        ]
+                      }
+                    },
+                    {
+                      "description": "Inline store catalog with catchment areas",
+                      "data": {
+                        "catalog_id": "retail-locations",
+                        "name": "Retail Locations",
+                        "type": "store",
+                        "items": [
+                          {
+                            "store_id": "amsterdam-flagship",
+                            "name": "Amsterdam Flagship",
+                            "location": {
+                              "lat": 52.3676,
+                              "lng": 4.9041
+                            },
+                            "catchments": [
+                              {
+                                "catchment_id": "walk",
+                                "travel_time": {
+                                  "value": 10,
+                                  "unit": "min"
+                                },
+                                "transport_mode": "walking"
+                              },
+                              {
+                                "catchment_id": "drive",
+                                "travel_time": {
+                                  "value": 15,
+                                  "unit": "min"
+                                },
+                                "transport_mode": "driving"
+                              }
+                            ]
+                          }
+                        ]
+                      }
+                    }
+                  ]
+                }
+              },
+              "format_ids": {
+                "type": "array",
+                "description": "Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.",
+                "items": {
+                  "title": "Format ID",
+                  "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                    },
+                    "id": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$",
+                      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "duration_ms": {
+                      "type": "number",
+                      "minimum": 1,
+                      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                    }
+                  },
+                  "required": [
+                    "agent_url",
+                    "id"
+                  ],
+                  "additionalProperties": true,
+                  "dependencies": {
+                    "width": [
+                      "height"
+                    ],
+                    "height": [
+                      "width"
+                    ]
+                  }
+                }
+              },
+              "targeting_overlay": {
+                "title": "Targeting Overlay",
+                "description": "Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).",
+                "type": "object",
+                "properties": {
+                  "geo_countries": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_countries_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_regions": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_regions_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+                    },
+                    "minItems": 1
+                  },
+                  "geo_metros": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Metro Area System",
+                          "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                          "type": "string",
+                          "enum": [
+                            "nielsen_dma",
+                            "uk_itl1",
+                            "uk_itl2",
+                            "eurostat_nuts2",
+                            "custom"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "geo_metros_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Metro Area System",
+                          "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+                          "type": "string",
+                          "enum": [
+                            "nielsen_dma",
+                            "uk_itl1",
+                            "uk_itl2",
+                            "eurostat_nuts2",
+                            "custom"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "geo_postal_areas": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Postal Code System",
+                          "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                          "type": "string",
+                          "enum": [
+                            "us_zip",
+                            "us_zip_plus_four",
+                            "gb_outward",
+                            "gb_full",
+                            "ca_fsa",
+                            "ca_full",
+                            "de_plz",
+                            "fr_code_postal",
+                            "au_postcode",
+                            "ch_plz",
+                            "at_plz"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "geo_postal_areas_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "system": {
+                          "title": "Postal Code System",
+                          "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+                          "type": "string",
+                          "enum": [
+                            "us_zip",
+                            "us_zip_plus_four",
+                            "gb_outward",
+                            "gb_full",
+                            "ca_fsa",
+                            "ca_full",
+                            "de_plz",
+                            "fr_code_postal",
+                            "au_postcode",
+                            "ch_plz",
+                            "at_plz"
+                          ]
+                        },
+                        "values": {
+                          "type": "array",
+                          "description": "Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "system",
+                        "values"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "daypart_targets": {
+                    "type": "array",
+                    "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
+                    "items": {
+                      "title": "Daypart Target",
+                      "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+                      "type": "object",
+                      "properties": {
+                        "days": {
+                          "type": "array",
+                          "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
+                          "items": {
+                            "title": "Day of Week",
+                            "description": "Days of the week for daypart targeting",
+                            "type": "string",
+                            "enum": [
+                              "monday",
+                              "tuesday",
+                              "wednesday",
+                              "thursday",
+                              "friday",
+                              "saturday",
+                              "sunday"
+                            ]
+                          },
+                          "minItems": 1
+                        },
+                        "start_hour": {
+                          "type": "integer",
+                          "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+                          "minimum": 0,
+                          "maximum": 23
+                        },
+                        "end_hour": {
+                          "type": "integer",
+                          "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
+                          "minimum": 1,
+                          "maximum": 24
+                        },
+                        "label": {
+                          "type": "string",
+                          "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+                        }
+                      },
+                      "required": [
+                        "days",
+                        "start_hour",
+                        "end_hour"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "axe_include_segment": {
+                    "type": "string",
+                    "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
+                    "deprecated": true
+                  },
+                  "axe_exclude_segment": {
+                    "type": "string",
+                    "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
+                    "deprecated": true
+                  },
+                  "audience_include": {
+                    "type": "array",
+                    "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1
+                  },
+                  "audience_exclude": {
+                    "type": "array",
+                    "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1
+                  },
+                  "frequency_cap": {
+                    "title": "Frequency Cap",
+                    "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
+                    "type": "object",
+                    "properties": {
+                      "suppress": {
+                        "allOf": [
+                          {
+                            "title": "Duration",
+                            "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                            "type": "object",
+                            "properties": {
+                              "interval": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                              },
+                              "unit": {
+                                "type": "string",
+                                "enum": [
+                                  "seconds",
+                                  "minutes",
+                                  "hours",
+                                  "days",
+                                  "campaign"
+                                ],
+                                "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                              }
+                            },
+                            "required": [
+                              "interval",
+                              "unit"
+                            ],
+                            "additionalProperties": false
+                          }
+                        ],
+                        "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+                      },
+                      "suppress_minutes": {
+                        "type": "number",
+                        "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+                        "minimum": 0
+                      },
+                      "max_impressions": {
+                        "type": "integer",
+                        "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+                        "minimum": 1
+                      },
+                      "per": {
+                        "allOf": [
+                          {
+                            "title": "Reach Unit",
+                            "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                            "type": "string",
+                            "enum": [
+                              "individuals",
+                              "households",
+                              "devices",
+                              "accounts",
+                              "cookies",
+                              "custom"
+                            ],
+                            "enumDescriptions": {
+                              "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                              "households": "Unique households or TV homes.",
+                              "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                              "accounts": "Unique logged-in accounts (platform-specific identity).",
+                              "cookies": "Unique browser cookies.",
+                              "custom": "Publisher-defined reach unit. Describe in ext."
+                            }
+                          }
+                        ],
+                        "description": "Entity granularity for impression counting. Required when max_impressions is set."
+                      },
+                      "window": {
+                        "allOf": [
+                          {
+                            "title": "Duration",
+                            "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                            "type": "object",
+                            "properties": {
+                              "interval": {
+                                "type": "integer",
+                                "minimum": 1,
+                                "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                              },
+                              "unit": {
+                                "type": "string",
+                                "enum": [
+                                  "seconds",
+                                  "minutes",
+                                  "hours",
+                                  "days",
+                                  "campaign"
+                                ],
+                                "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                              }
+                            },
+                            "required": [
+                              "interval",
+                              "unit"
+                            ],
+                            "additionalProperties": false
+                          }
+                        ],
+                        "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+                      }
+                    },
+                    "anyOf": [
+                      {
+                        "required": [
+                          "suppress"
+                        ]
+                      },
+                      {
+                        "required": [
+                          "suppress_minutes"
+                        ]
+                      },
+                      {
+                        "required": [
+                          "max_impressions"
+                        ]
+                      }
+                    ],
+                    "dependencies": {
+                      "max_impressions": [
+                        "per",
+                        "window"
+                      ],
+                      "per": [
+                        "max_impressions"
+                      ],
+                      "window": [
+                        "max_impressions"
+                      ]
+                    },
+                    "additionalProperties": true
+                  },
+                  "property_list": {
+                    "title": "Property List Reference",
+                    "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent managing the property list"
+                      },
+                      "list_id": {
+                        "type": "string",
+                        "description": "Identifier for the property list within the agent",
+                        "minLength": 1
+                      },
+                      "auth_token": {
+                        "type": "string",
+                        "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "list_id"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "collection_list": {
+                    "title": "Collection List Reference",
+                    "description": "Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent managing the collection list"
+                      },
+                      "list_id": {
+                        "type": "string",
+                        "description": "Identifier for the collection list within the agent",
+                        "minLength": 1
+                      },
+                      "auth_token": {
+                        "type": "string",
+                        "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "list_id"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "collection_list_exclude": {
+                    "title": "Collection List Reference",
+                    "description": "Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+                    "type": "object",
+                    "properties": {
+                      "agent_url": {
+                        "type": "string",
+                        "format": "uri",
+                        "description": "URL of the agent managing the collection list"
+                      },
+                      "list_id": {
+                        "type": "string",
+                        "description": "Identifier for the collection list within the agent",
+                        "minLength": 1
+                      },
+                      "auth_token": {
+                        "type": "string",
+                        "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+                      }
+                    },
+                    "required": [
+                      "agent_url",
+                      "list_id"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "age_restriction": {
+                    "type": "object",
+                    "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
+                    "properties": {
+                      "min": {
+                        "type": "integer",
+                        "minimum": 13,
+                        "maximum": 99,
+                        "description": "Minimum age required"
+                      },
+                      "verification_required": {
+                        "type": "boolean",
+                        "default": false,
+                        "description": "Whether verified age (not inferred) is required for compliance"
+                      },
+                      "accepted_methods": {
+                        "type": "array",
+                        "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
+                        "items": {
+                          "title": "Age Verification Method",
+                          "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+                          "type": "string",
+                          "enum": [
+                            "facial_age_estimation",
+                            "id_document",
+                            "digital_id",
+                            "credit_card",
+                            "world_id"
+                          ]
+                        },
+                        "minItems": 1
+                      }
+                    },
+                    "required": [
+                      "min"
+                    ],
+                    "additionalProperties": false
+                  },
+                  "device_platform": {
+                    "type": "array",
+                    "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
+                    "items": {
+                      "title": "Device Platform",
+                      "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
+                      "type": "string",
+                      "enum": [
+                        "ios",
+                        "android",
+                        "windows",
+                        "macos",
+                        "linux",
+                        "chromeos",
+                        "tvos",
+                        "tizen",
+                        "webos",
+                        "fire_os",
+                        "roku_os",
+                        "unknown"
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "device_type": {
+                    "type": "array",
+                    "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+                    "items": {
+                      "title": "Device Type",
+                      "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                      "type": "string",
+                      "enum": [
+                        "desktop",
+                        "mobile",
+                        "tablet",
+                        "ctv",
+                        "dooh",
+                        "unknown"
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "device_type_exclude": {
+                    "type": "array",
+                    "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+                    "items": {
+                      "title": "Device Type",
+                      "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+                      "type": "string",
+                      "enum": [
+                        "desktop",
+                        "mobile",
+                        "tablet",
+                        "ctv",
+                        "dooh",
+                        "unknown"
+                      ]
+                    },
+                    "minItems": 1
+                  },
+                  "store_catchments": {
+                    "type": "array",
+                    "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "catalog_id": {
+                          "type": "string",
+                          "description": "Synced store-type catalog ID from sync_catalogs."
+                        },
+                        "store_ids": {
+                          "type": "array",
+                          "description": "Filter to specific stores within the catalog. Omit to target all stores.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        },
+                        "catchment_ids": {
+                          "type": "array",
+                          "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+                          "items": {
+                            "type": "string"
+                          },
+                          "minItems": 1
+                        }
+                      },
+                      "required": [
+                        "catalog_id"
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1
+                  },
+                  "geo_proximity": {
+                    "type": "array",
+                    "description": "Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics \u2014 a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "lat": {
+                          "type": "number",
+                          "minimum": -90,
+                          "maximum": 90,
+                          "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                        },
+                        "lng": {
+                          "type": "number",
+                          "minimum": -180,
+                          "maximum": 180,
+                          "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+                        },
+                        "label": {
+                          "type": "string",
+                          "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area')."
+                        },
+                        "travel_time": {
+                          "type": "object",
+                          "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
+                          "properties": {
+                            "value": {
+                              "type": "number",
+                              "minimum": 1,
+                              "description": "Travel time limit."
+                            },
+                            "unit": {
+                              "type": "string",
+                              "enum": [
+                                "min",
+                                "hr"
+                              ],
+                              "description": "Time unit."
+                            }
+                          },
+                          "required": [
+                            "value",
+                            "unit"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "transport_mode": {
+                          "title": "Transport Mode",
+                          "description": "Transportation mode for isochrone calculation. Required when travel_time is provided.",
+                          "type": "string",
+                          "enum": [
+                            "walking",
+                            "cycling",
+                            "driving",
+                            "public_transport"
+                          ],
+                          "enumDescriptions": {
+                            "walking": "Pedestrian travel on walkable paths and sidewalks",
+                            "cycling": "Bicycle travel on roads and cycle paths",
+                            "driving": "Motor vehicle travel on road networks",
+                            "public_transport": "Public transit including bus, rail, metro, and ferry"
+                          }
+                        },
+                        "radius": {
+                          "type": "object",
+                          "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
+                          "properties": {
+                            "value": {
+                              "type": "number",
+                              "exclusiveMinimum": 0,
+                              "description": "Radius distance."
+                            },
+                            "unit": {
+                              "title": "Distance Unit",
+                              "description": "Distance unit.",
+                              "type": "string",
+                              "enum": [
+                                "km",
+                                "mi",
+                                "m"
+                              ],
+                              "enumDescriptions": {
+                                "km": "Kilometers",
+                                "mi": "Miles",
+                                "m": "Meters"
+                              }
+                            }
+                          },
+                          "required": [
+                            "value",
+                            "unit"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "geometry": {
+                          "type": "object",
+                          "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "enum": [
+                                "Polygon",
+                                "MultiPolygon"
+                              ],
+                              "description": "GeoJSON geometry type."
+                            },
+                            "coordinates": {
+                              "type": "array",
+                              "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "coordinates"
+                          ],
+                          "additionalProperties": false
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "oneOf": [
+                        {
+                          "required": [
+                            "lat",
+                            "lng",
+                            "travel_time",
+                            "transport_mode"
+                          ],
+                          "not": {
+                            "anyOf": [
+                              {
+                                "required": [
+                                  "radius"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "geometry"
+                                ]
+                              }
+                            ]
+                          }
+                        },
+                        {
+                          "required": [
+                            "lat",
+                            "lng",
+                            "radius"
+                          ],
+                          "not": {
+                            "anyOf": [
+                              {
+                                "required": [
+                                  "travel_time"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "geometry"
+                                ]
+                              }
+                            ]
+                          }
+                        },
+                        {
+                          "required": [
+                            "geometry"
+                          ],
+                          "not": {
+                            "anyOf": [
+                              {
+                                "required": [
+                                  "travel_time"
+                                ]
+                              },
+                              {
+                                "required": [
+                                  "radius"
+                                ]
+                              }
+                            ]
+                          }
+                        }
+                      ],
+                      "additionalProperties": true
+                    },
+                    "minItems": 1
+                  },
+                  "language": {
+                    "type": "array",
+                    "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+                    "items": {
+                      "type": "string",
+                      "pattern": "^[a-z]{2}$"
+                    },
+                    "minItems": 1
+                  },
+                  "keyword_targets": {
+                    "type": "array",
+                    "description": "Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) \u2014 the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "keyword": {
+                          "type": "string",
+                          "minLength": 1,
+                          "description": "The keyword to target"
+                        },
+                        "match_type": {
+                          "type": "string",
+                          "enum": [
+                            "broad",
+                            "phrase",
+                            "exact"
+                          ],
+                          "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly"
+                        },
+                        "bid_price": {
+                          "type": "number",
+                          "minimum": 0,
+                          "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies."
+                        }
+                      },
+                      "required": [
+                        "keyword",
+                        "match_type"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "negative_keywords": {
+                    "type": "array",
+                    "description": "Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "keyword": {
+                          "type": "string",
+                          "minLength": 1,
+                          "description": "The keyword to exclude"
+                        },
+                        "match_type": {
+                          "type": "string",
+                          "enum": [
+                            "broad",
+                            "phrase",
+                            "exact"
+                          ],
+                          "description": "Match type for exclusion"
+                        }
+                      },
+                      "required": [
+                        "keyword",
+                        "match_type"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  }
+                },
+                "additionalProperties": true
+              },
+              "measurement_terms": {
+                "title": "Measurement Terms",
+                "description": "Agreed billing measurement and makegood terms for this package. Reflects what was negotiated \u2014 may differ from the buyer's proposal or the product's defaults. When present, these terms are binding for the package's duration.",
+                "type": "object",
+                "properties": {
+                  "billing_measurement": {
+                    "type": "object",
+                    "description": "Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV).",
+                    "properties": {
+                      "vendor": {
+                        "title": "Brand Reference",
+                        "description": "Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+                        "type": "object",
+                        "properties": {
+                          "domain": {
+                            "type": "string",
+                            "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                          },
+                          "brand_id": {
+                            "title": "Brand ID",
+                            "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                            "type": "string",
+                            "pattern": "^[a-z0-9_]+$",
+                            "examples": [
+                              "tide",
+                              "cheerios",
+                              "air_jordan",
+                              "nike",
+                              "pampers"
+                            ]
+                          }
+                        },
+                        "required": [
+                          "domain"
+                        ],
+                        "additionalProperties": false,
+                        "examples": [
+                          {
+                            "domain": "nova-brands.com",
+                            "brand_id": "spark"
+                          },
+                          {
+                            "domain": "nova-brands.com",
+                            "brand_id": "glow"
+                          },
+                          {
+                            "domain": "acme-corp.com"
+                          }
+                        ]
+                      },
+                      "max_variance_percent": {
+                        "type": "number",
+                        "minimum": 0,
+                        "exclusiveMaximum": 100,
+                        "description": "Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review)."
+                      },
+                      "measurement_window": {
+                        "type": "string",
+                        "description": "Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+                        "examples": [
+                          "live",
+                          "c3",
+                          "c7",
+                          "tentative",
+                          "final",
+                          "post_ivt",
+                          "post_sivt",
+                          "downloads_30d"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "vendor"
+                    ],
+                    "additionalProperties": true
+                  },
+                  "makegood_policy": {
+                    "type": "object",
+                    "description": "Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.",
+                    "properties": {
+                      "available_remedies": {
+                        "type": "array",
+                        "description": "Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.",
+                        "items": {
+                          "title": "Makegood Remedy",
+                          "description": "Remedy types available when a performance standard or billing measurement threshold is breached.",
+                          "type": "string",
+                          "enum": [
+                            "additional_delivery",
+                            "credit",
+                            "invoice_adjustment"
+                          ],
+                          "enumDescriptions": {
+                            "additional_delivery": "Seller extends or adds impressions to compensate for the shortfall. Delivery is like-for-like on the same campaign or a subsequent campaign within the same account.",
+                            "credit": "Seller issues a credit toward future media buys on the same account.",
+                            "invoice_adjustment": "Seller reduces the invoice for the current media buy to reflect actual delivered value."
+                          }
+                        },
+                        "minItems": 1,
+                        "uniqueItems": true
+                      }
+                    },
+                    "required": [
+                      "available_remedies"
+                    ],
+                    "additionalProperties": true
+                  }
+                },
+                "additionalProperties": true
+              },
+              "performance_standards": {
+                "type": "array",
+                "description": "Agreed performance standards for this package. When any entry specifies a vendor, creatives assigned to this package MUST include corresponding tracker_script or tracker_pixel assets from that vendor.",
+                "items": {
+                  "title": "Performance Standard",
+                  "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+                  "type": "object",
+                  "properties": {
+                    "metric": {
+                      "title": "Performance Standard Metric",
+                      "description": "The performance metric this standard applies to.",
+                      "type": "string",
+                      "enum": [
+                        "viewability",
+                        "ivt",
+                        "completion_rate",
+                        "brand_safety",
+                        "attention_score"
+                      ],
+                      "enumDescriptions": {
+                        "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+                        "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+                        "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                        "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+                        "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+                      }
+                    },
+                    "threshold": {
+                      "type": "number",
+                      "minimum": 0,
+                      "maximum": 1,
+                      "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+                    },
+                    "standard": {
+                      "title": "Viewability Standard",
+                      "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+                      "type": "string",
+                      "enum": [
+                        "mrc",
+                        "groupm"
+                      ],
+                      "enumDescriptions": {
+                        "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+                        "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+                      }
+                    },
+                    "vendor": {
+                      "title": "Brand Reference",
+                      "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+                      "type": "object",
+                      "properties": {
+                        "domain": {
+                          "type": "string",
+                          "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                        },
+                        "brand_id": {
+                          "title": "Brand ID",
+                          "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                          "type": "string",
+                          "pattern": "^[a-z0-9_]+$",
+                          "examples": [
+                            "tide",
+                            "cheerios",
+                            "air_jordan",
+                            "nike",
+                            "pampers"
+                          ]
+                        }
+                      },
+                      "required": [
+                        "domain"
+                      ],
+                      "additionalProperties": false,
+                      "examples": [
+                        {
+                          "domain": "nova-brands.com",
+                          "brand_id": "spark"
+                        },
+                        {
+                          "domain": "nova-brands.com",
+                          "brand_id": "glow"
+                        },
+                        {
+                          "domain": "acme-corp.com"
+                        }
+                      ]
+                    }
+                  },
+                  "required": [
+                    "metric",
+                    "threshold",
+                    "vendor"
+                  ],
+                  "additionalProperties": true
+                },
+                "minItems": 1
+              },
+              "creative_assignments": {
+                "type": "array",
+                "description": "Creative assets assigned to this package",
+                "items": {
+                  "title": "Creative Assignment",
+                  "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
+                  "type": "object",
+                  "properties": {
+                    "creative_id": {
+                      "type": "string",
+                      "description": "Unique identifier for the creative"
+                    },
+                    "weight": {
+                      "type": "number",
+                      "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+                      "minimum": 0,
+                      "maximum": 100
+                    },
+                    "placement_ids": {
+                      "type": "array",
+                      "description": "Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+                      "items": {
+                        "type": "string"
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "creative_id"
+                  ],
+                  "additionalProperties": true
+                }
+              },
+              "format_ids_to_provide": {
+                "type": "array",
+                "description": "Format IDs that creative assets will be provided for this package",
+                "items": {
+                  "title": "Format ID",
+                  "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+                  "type": "object",
+                  "properties": {
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+                    },
+                    "id": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z0-9_-]+$",
+                      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+                    },
+                    "width": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "height": {
+                      "type": "integer",
+                      "minimum": 1,
+                      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
+                    },
+                    "duration_ms": {
+                      "type": "number",
+                      "minimum": 1,
+                      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
+                    }
+                  },
+                  "required": [
+                    "agent_url",
+                    "id"
+                  ],
+                  "additionalProperties": true,
+                  "dependencies": {
+                    "width": [
+                      "height"
+                    ],
+                    "height": [
+                      "width"
+                    ]
+                  }
+                }
+              },
+              "optimization_goals": {
+                "type": "array",
+                "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
+                "items": {
+                  "title": "Optimization Goal",
+                  "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
+                  "oneOf": [
+                    {
+                      "type": "object",
+                      "description": "Optimize for a seller-tracked delivery metric. No event source required \u2014 the seller tracks these natively.",
+                      "properties": {
+                        "kind": {
+                          "type": "string",
+                          "const": "metric"
+                        },
+                        "metric": {
+                          "type": "string",
+                          "enum": [
+                            "clicks",
+                            "views",
+                            "completed_views",
+                            "viewed_seconds",
+                            "attention_seconds",
+                            "attention_score",
+                            "engagements",
+                            "follows",
+                            "saves",
+                            "profile_visits",
+                            "reach"
+                          ],
+                          "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+                        },
+                        "reach_unit": {
+                          "allOf": [
+                            {
+                              "title": "Reach Unit",
+                              "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+                              "type": "string",
+                              "enum": [
+                                "individuals",
+                                "households",
+                                "devices",
+                                "accounts",
+                                "cookies",
+                                "custom"
+                              ],
+                              "enumDescriptions": {
+                                "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+                                "households": "Unique households or TV homes.",
+                                "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
+                                "accounts": "Unique logged-in accounts (platform-specific identity).",
+                                "cookies": "Unique browser cookies.",
+                                "custom": "Publisher-defined reach unit. Describe in ext."
+                              }
+                            }
+                          ],
+                          "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+                        },
+                        "target_frequency": {
+                          "type": "object",
+                          "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
+                          "properties": {
+                            "min": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1)."
+                            },
+                            "max": {
+                              "type": "integer",
+                              "minimum": 1,
+                              "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point."
+                            },
+                            "window": {
+                              "allOf": [
+                                {
+                                  "title": "Duration",
+                                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                                  "type": "object",
+                                  "properties": {
+                                    "interval": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                    },
+                                    "unit": {
+                                      "type": "string",
+                                      "enum": [
+                                        "seconds",
+                                        "minutes",
+                                        "hours",
+                                        "days",
+                                        "campaign"
+                                      ],
+                                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                    }
+                                  },
+                                  "required": [
+                                    "interval",
+                                    "unit"
+                                  ],
+                                  "additionalProperties": false
+                                }
+                              ],
+                              "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
+                            }
+                          },
+                          "required": [
+                            "window"
+                          ],
+                          "anyOf": [
+                            {
+                              "required": [
+                                "min"
+                              ]
+                            },
+                            {
+                              "required": [
+                                "max"
+                              ]
+                            }
+                          ],
+                          "additionalProperties": true
+                        },
+                        "view_duration_seconds": {
+                          "type": "number",
+                          "exclusiveMinimum": 0,
+                          "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies."
+                        },
+                        "target": {
+                          "description": "Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Target cost per unit of the metric (e.g., cost per click, cost per completed view).",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "cost_per"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Target cost per metric unit in the buy currency"
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "description": "Minimum per-impression rate for this metric. The metric defines the units: proportions for count metrics (e.g., 0.001 for 0.1% CTR, 0.70 for 70% viewability), seconds for duration metrics (e.g., 3.0 for 3s in view), or score for score metrics.",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "threshold_rate"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score)."
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        "priority": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "metric"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "type": "object",
+                      "description": "Optimize for advertiser-tracked conversion events. Requires event sources registered via sync_event_sources.",
+                      "properties": {
+                        "kind": {
+                          "type": "string",
+                          "const": "event"
+                        },
+                        "event_sources": {
+                          "type": "array",
+                          "description": "Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries \u2014 the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "event_source_id": {
+                                "type": "string",
+                                "minLength": 1,
+                                "description": "Event source to include (must be configured on this account via sync_event_sources)"
+                              },
+                              "event_type": {
+                                "title": "Event Type",
+                                "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)",
+                                "type": "string",
+                                "enum": [
+                                  "page_view",
+                                  "view_content",
+                                  "select_content",
+                                  "select_item",
+                                  "search",
+                                  "share",
+                                  "add_to_cart",
+                                  "remove_from_cart",
+                                  "viewed_cart",
+                                  "add_to_wishlist",
+                                  "initiate_checkout",
+                                  "add_payment_info",
+                                  "purchase",
+                                  "refund",
+                                  "lead",
+                                  "qualify_lead",
+                                  "close_convert_lead",
+                                  "disqualify_lead",
+                                  "complete_registration",
+                                  "subscribe",
+                                  "start_trial",
+                                  "app_install",
+                                  "app_launch",
+                                  "contact",
+                                  "schedule",
+                                  "donate",
+                                  "submit_application",
+                                  "custom"
+                                ],
+                                "enumDescriptions": {
+                                  "page_view": "User viewed a page",
+                                  "view_content": "User viewed specific content (product, article, etc.)",
+                                  "select_content": "User selected or clicked on content (article, video, etc.)",
+                                  "select_item": "User selected a specific product or item from a list",
+                                  "search": "User performed a search",
+                                  "share": "User shared content via social or messaging",
+                                  "add_to_cart": "User added an item to cart",
+                                  "remove_from_cart": "User removed an item from cart",
+                                  "viewed_cart": "User viewed their shopping cart",
+                                  "add_to_wishlist": "User added an item to a wishlist",
+                                  "initiate_checkout": "User started checkout process",
+                                  "add_payment_info": "User added payment information",
+                                  "purchase": "User completed a purchase",
+                                  "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                                  "lead": "User expressed interest (form submission, signup, etc.)",
+                                  "qualify_lead": "Lead qualified by sales or scoring criteria",
+                                  "close_convert_lead": "Lead converted to a customer or closed deal",
+                                  "disqualify_lead": "Lead disqualified or marked as not viable",
+                                  "complete_registration": "User completed account registration",
+                                  "subscribe": "User subscribed to a service or newsletter",
+                                  "start_trial": "User started a free trial",
+                                  "app_install": "User installed an application",
+                                  "app_launch": "User launched an application",
+                                  "contact": "User initiated contact (call, message, etc.)",
+                                  "schedule": "User scheduled an appointment or event",
+                                  "donate": "User made a donation",
+                                  "submit_application": "User submitted an application (loan, job, etc.)",
+                                  "custom": "Custom event type (specify in custom_event_name)"
+                                }
+                              },
+                              "custom_event_name": {
+                                "type": "string",
+                                "description": "Required when event_type is 'custom'. Platform-specific name for the custom event."
+                              },
+                              "value_field": {
+                                "type": "string",
+                                "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' \u2014 sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism."
+                              },
+                              "value_factor": {
+                                "type": "number",
+                                "default": 1,
+                                "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics."
+                              }
+                            },
+                            "required": [
+                              "event_source_id",
+                              "event_type"
+                            ],
+                            "additionalProperties": true
+                          },
+                          "minItems": 1
+                        },
+                        "target": {
+                          "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget \u2014 regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.",
+                          "oneOf": [
+                            {
+                              "type": "object",
+                              "description": "Target cost per conversion event (after deduplication across event_sources).",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "cost_per"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Target cost per event in the buy currency"
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "description": "Target return per unit of ad spend, calculated as sum(value_field * value_factor) / spend across all deduplicated events. Requires value_field on at least one event_sources entry.",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "per_ad_spend"
+                                },
+                                "value": {
+                                  "type": "number",
+                                  "exclusiveMinimum": 0,
+                                  "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)"
+                                }
+                              },
+                              "required": [
+                                "kind",
+                                "value"
+                              ],
+                              "additionalProperties": true
+                            },
+                            {
+                              "type": "object",
+                              "description": "Maximize total conversion value within budget, without a specific return ratio target. Steers spend toward higher-value conversions rather than maximizing conversion count. Requires value_field on at least one event_sources entry.",
+                              "properties": {
+                                "kind": {
+                                  "type": "string",
+                                  "const": "maximize_value"
+                                }
+                              },
+                              "required": [
+                                "kind"
+                              ],
+                              "additionalProperties": true
+                            }
+                          ]
+                        },
+                        "attribution_window": {
+                          "type": "object",
+                          "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
+                          "properties": {
+                            "post_click": {
+                              "allOf": [
+                                {
+                                  "title": "Duration",
+                                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                                  "type": "object",
+                                  "properties": {
+                                    "interval": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                    },
+                                    "unit": {
+                                      "type": "string",
+                                      "enum": [
+                                        "seconds",
+                                        "minutes",
+                                        "hours",
+                                        "days",
+                                        "campaign"
+                                      ],
+                                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                    }
+                                  },
+                                  "required": [
+                                    "interval",
+                                    "unit"
+                                  ],
+                                  "additionalProperties": false
+                                }
+                              ],
+                              "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
+                            },
+                            "post_view": {
+                              "allOf": [
+                                {
+                                  "title": "Duration",
+                                  "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                                  "type": "object",
+                                  "properties": {
+                                    "interval": {
+                                      "type": "integer",
+                                      "minimum": 1,
+                                      "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                                    },
+                                    "unit": {
+                                      "type": "string",
+                                      "enum": [
+                                        "seconds",
+                                        "minutes",
+                                        "hours",
+                                        "days",
+                                        "campaign"
+                                      ],
+                                      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                                    }
+                                  },
+                                  "required": [
+                                    "interval",
+                                    "unit"
+                                  ],
+                                  "additionalProperties": false
+                                }
+                              ],
+                              "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
+                            }
+                          },
+                          "required": [
+                            "post_click"
+                          ],
+                          "additionalProperties": true
+                        },
+                        "priority": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "event_sources"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                },
+                "minItems": 1
+              },
+              "start_time": {
+                "type": "string",
+                "format": "date-time",
+                "not": {
+                  "const": "asap"
+                },
+                "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+              },
+              "end_time": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+              },
+              "paused": {
+                "type": "boolean",
+                "description": "Whether this package is paused by the buyer. Paused packages do not deliver impressions. Defaults to false.",
+                "default": false
+              },
+              "canceled": {
+                "type": "boolean",
+                "description": "Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.",
+                "default": false
+              },
+              "cancellation": {
+                "type": "object",
+                "description": "Cancellation metadata. Present only when canceled is true.",
+                "required": [
+                  "canceled_at",
+                  "canceled_by"
+                ],
+                "properties": {
+                  "canceled_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "ISO 8601 timestamp when this package was canceled."
+                  },
+                  "canceled_by": {
+                    "title": "Canceled By",
+                    "description": "Which party initiated the package cancellation.",
+                    "type": "string",
+                    "enum": [
+                      "buyer",
+                      "seller"
+                    ],
+                    "enumDescriptions": {
+                      "buyer": "Cancellation initiated by the buyer via update_media_buy",
+                      "seller": "Cancellation initiated by the seller (e.g., policy violation, inventory withdrawal)"
+                    }
+                  },
+                  "reason": {
+                    "type": "string",
+                    "description": "Reason the package was canceled.",
+                    "maxLength": 500
+                  },
+                  "acknowledged_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation."
+                  }
+                },
+                "additionalProperties": false
+              },
+              "agency_estimate_number": {
+                "type": "string",
+                "maxLength": 100,
+                "description": "Agency estimate or authorization number for this package. Echoed from the buyer's request. When present on the package, takes precedence over the media buy-level estimate number."
+              },
+              "creative_deadline": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
+              },
+              "context": {
+                "title": "Context Object",
+                "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+                "type": "object",
+                "additionalProperties": true
+              },
+              "ext": {
+                "title": "Extension Object",
+                "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                "type": "object",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "package_id"
+            ],
+            "additionalProperties": true
+          }
+        },
+        "valid_actions": {
+          "type": "array",
+          "description": "Actions the buyer can perform after this update. Saves a round-trip to get_media_buys.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "pause",
+              "resume",
+              "cancel",
+              "update_budget",
+              "update_dates",
+              "update_packages",
+              "add_packages",
+              "sync_creatives"
+            ]
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "media_buy_id"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "UpdateMediaBuyError",
+      "description": "Error response - operation failed, no changes applied",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Array of errors explaining why the operation failed",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "media_buy_id"
+            ]
+          },
+          {
+            "required": [
+              "affected_packages"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.457Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/create-property-list-request.json b/schemas/cache/bundled/property/create-property-list-request.json
new file mode 100644
index 000000000..17c51e051
--- /dev/null
+++ b/schemas/cache/bundled/property/create-property-list-request.json
@@ -0,0 +1,517 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Property List Request",
+  "description": "Request parameters for creating a new property list",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of the list's purpose"
+    },
+    "base_properties": {
+      "type": "array",
+      "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
+      "items": {
+        "title": "Base Property Source",
+        "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
+        "discriminator": {
+          "propertyName": "selection_type"
+        },
+        "oneOf": [
+          {
+            "type": "object",
+            "title": "Publisher Tags Source",
+            "description": "Select properties from a publisher by tag membership",
+            "properties": {
+              "selection_type": {
+                "type": "string",
+                "const": "publisher_tags",
+                "description": "Discriminator indicating selection by property tags within a publisher"
+              },
+              "publisher_domain": {
+                "type": "string",
+                "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "tags": {
+                "type": "array",
+                "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+                "items": {
+                  "title": "Property Tag",
+                  "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "ctv",
+                    "premium",
+                    "news",
+                    "sports",
+                    "meta_network",
+                    "social_media"
+                  ]
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "selection_type",
+              "publisher_domain",
+              "tags"
+            ],
+            "additionalProperties": false
+          },
+          {
+            "type": "object",
+            "title": "Publisher Property IDs Source",
+            "description": "Select specific properties from a publisher by ID",
+            "properties": {
+              "selection_type": {
+                "type": "string",
+                "const": "publisher_ids",
+                "description": "Discriminator indicating selection by specific property IDs within a publisher"
+              },
+              "publisher_domain": {
+                "type": "string",
+                "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "property_ids": {
+                "type": "array",
+                "description": "Specific property IDs from the publisher's adagents.json",
+                "items": {
+                  "title": "Property ID",
+                  "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "cnn_ctv_app",
+                    "homepage",
+                    "mobile_ios",
+                    "instagram"
+                  ]
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "selection_type",
+              "publisher_domain",
+              "property_ids"
+            ],
+            "additionalProperties": false
+          },
+          {
+            "type": "object",
+            "title": "Direct Identifiers Source",
+            "description": "Select properties by direct identifiers (domains, app IDs, etc.) without publisher context",
+            "properties": {
+              "selection_type": {
+                "type": "string",
+                "const": "identifiers",
+                "description": "Discriminator indicating selection by direct identifiers"
+              },
+              "identifiers": {
+                "type": "array",
+                "description": "Direct property identifiers (domains, app IDs, etc.)",
+                "items": {
+                  "title": "Identifier",
+                  "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "title": "Property Identifier Types",
+                      "description": "Type of identifier",
+                      "type": "string",
+                      "enum": [
+                        "domain",
+                        "subdomain",
+                        "network_id",
+                        "ios_bundle",
+                        "android_package",
+                        "apple_app_store_id",
+                        "google_play_id",
+                        "roku_store_id",
+                        "fire_tv_asin",
+                        "samsung_app_id",
+                        "apple_tv_bundle",
+                        "bundle_id",
+                        "venue_id",
+                        "screen_id",
+                        "openooh_venue_type",
+                        "rss_url",
+                        "apple_podcast_id",
+                        "spotify_collection_id",
+                        "podcast_guid",
+                        "station_id",
+                        "facility_id"
+                      ],
+                      "enumDescriptions": {
+                        "domain": "Web domain (e.g., example.com)",
+                        "subdomain": "Specific subdomain (e.g., news.example.com)",
+                        "network_id": "Network or platform-specific identifier",
+                        "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                        "android_package": "Android package name (e.g., com.example.app)",
+                        "apple_app_store_id": "Apple App Store numeric ID",
+                        "google_play_id": "Google Play Store package ID",
+                        "roku_store_id": "Roku Channel Store identifier",
+                        "fire_tv_asin": "Amazon Fire TV ASIN",
+                        "samsung_app_id": "Samsung TV app identifier",
+                        "apple_tv_bundle": "Apple TV app bundle identifier",
+                        "bundle_id": "Generic app bundle identifier",
+                        "venue_id": "DOOH venue identifier",
+                        "screen_id": "DOOH screen identifier within a venue",
+                        "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                        "rss_url": "RSS feed URL for podcast or content feed",
+                        "apple_podcast_id": "Apple Podcasts numeric ID",
+                        "spotify_collection_id": "Spotify show or collection URI",
+                        "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                        "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                        "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                      },
+                      "examples": [
+                        "domain",
+                        "ios_bundle",
+                        "venue_id",
+                        "apple_podcast_id",
+                        "station_id",
+                        "facility_id"
+                      ]
+                    },
+                    "value": {
+                      "type": "string",
+                      "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "value"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "selection_type",
+              "identifiers"
+            ],
+            "additionalProperties": false
+          }
+        ]
+      },
+      "minItems": 1
+    },
+    "filters": {
+      "title": "Property List Filters",
+      "description": "Dynamic filters to apply when resolving the list",
+      "type": "object",
+      "properties": {
+        "countries_all": {
+          "type": "array",
+          "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          },
+          "minItems": 1
+        },
+        "channels_any": {
+          "type": "array",
+          "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
+          "items": {
+            "title": "Media Channel",
+            "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+            "type": "string",
+            "enum": [
+              "display",
+              "olv",
+              "social",
+              "search",
+              "ctv",
+              "linear_tv",
+              "radio",
+              "streaming_audio",
+              "podcast",
+              "dooh",
+              "ooh",
+              "print",
+              "cinema",
+              "email",
+              "gaming",
+              "retail_media",
+              "influencer",
+              "affiliate",
+              "product_placement",
+              "sponsored_intelligence"
+            ],
+            "enumDescriptions": {
+              "display": "Digital display advertising (banners, native, rich media) across web and app",
+              "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+              "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+              "search": "Search engine advertising and search networks",
+              "ctv": "Connected TV and streaming on television screens",
+              "linear_tv": "Traditional broadcast and cable television",
+              "radio": "Traditional AM/FM radio broadcast",
+              "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+              "podcast": "Podcast advertising (host-read or dynamically inserted)",
+              "dooh": "Digital out-of-home screens in public spaces",
+              "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+              "print": "Newspapers, magazines, and other print publications",
+              "cinema": "Movie theater advertising",
+              "email": "Email advertising and sponsored newsletter content",
+              "gaming": "In-game advertising across platforms",
+              "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+              "influencer": "Creator and influencer marketing partnerships",
+              "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+              "product_placement": "Product placement, branded content, and sponsorship integrations",
+              "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+            }
+          },
+          "minItems": 1
+        },
+        "property_types": {
+          "type": "array",
+          "description": "Filter to these property types",
+          "items": {
+            "title": "Property Type",
+            "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
+            "type": "string",
+            "enum": [
+              "website",
+              "mobile_app",
+              "ctv_app",
+              "desktop_app",
+              "dooh",
+              "podcast",
+              "radio",
+              "linear_tv",
+              "streaming_audio",
+              "ai_assistant"
+            ],
+            "enumDescriptions": {
+              "website": "Web properties accessible via browser, identified by domain",
+              "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
+              "ctv_app": "Connected TV applications, identified by platform-specific store IDs",
+              "desktop_app": "Desktop applications (Electron, native, Chromium wrappers), identified by application bundle IDs",
+              "dooh": "Digital out-of-home screen networks, identified by network/venue IDs",
+              "podcast": "Podcast feeds and episodes, identified by RSS feed URLs or podcast IDs",
+              "radio": "Radio station properties, identified by station ID or facility ID",
+              "linear_tv": "Linear television stations and networks, identified by station ID or facility ID",
+              "streaming_audio": "Digital audio streaming properties, identified by platform-specific IDs",
+              "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs"
+            }
+          },
+          "minItems": 1
+        },
+        "feature_requirements": {
+          "type": "array",
+          "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
+          "items": {
+            "title": "Feature Requirement",
+            "description": "A feature-based requirement \u2014 a reusable predicate over a feature value. Used by property list filters today; designed for reuse in other surfaces (audience filters, creative gates) in future versions. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "Feature to evaluate (discovered via get_adcp_capabilities)"
+              },
+              "min_value": {
+                "type": "number",
+                "description": "Minimum numeric value required (for quantitative features)"
+              },
+              "max_value": {
+                "type": "number",
+                "description": "Maximum numeric value allowed (for quantitative features)"
+              },
+              "allowed_values": {
+                "type": "array",
+                "description": "Values that pass the requirement (for binary/categorical features)",
+                "items": {},
+                "minItems": 1
+              },
+              "if_not_covered": {
+                "type": "string",
+                "enum": [
+                  "exclude",
+                  "include"
+                ],
+                "default": "exclude",
+                "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+              },
+              "policy_id": {
+                "type": "string",
+                "description": "Optional attribution \u2014 when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+              }
+            },
+            "required": [
+              "feature_id"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "exclude_identifiers": {
+          "type": "array",
+          "description": "Identifiers to always exclude from results",
+          "items": {
+            "title": "Identifier",
+            "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+            "type": "object",
+            "properties": {
+              "type": {
+                "title": "Property Identifier Types",
+                "description": "Type of identifier",
+                "type": "string",
+                "enum": [
+                  "domain",
+                  "subdomain",
+                  "network_id",
+                  "ios_bundle",
+                  "android_package",
+                  "apple_app_store_id",
+                  "google_play_id",
+                  "roku_store_id",
+                  "fire_tv_asin",
+                  "samsung_app_id",
+                  "apple_tv_bundle",
+                  "bundle_id",
+                  "venue_id",
+                  "screen_id",
+                  "openooh_venue_type",
+                  "rss_url",
+                  "apple_podcast_id",
+                  "spotify_collection_id",
+                  "podcast_guid",
+                  "station_id",
+                  "facility_id"
+                ],
+                "enumDescriptions": {
+                  "domain": "Web domain (e.g., example.com)",
+                  "subdomain": "Specific subdomain (e.g., news.example.com)",
+                  "network_id": "Network or platform-specific identifier",
+                  "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                  "android_package": "Android package name (e.g., com.example.app)",
+                  "apple_app_store_id": "Apple App Store numeric ID",
+                  "google_play_id": "Google Play Store package ID",
+                  "roku_store_id": "Roku Channel Store identifier",
+                  "fire_tv_asin": "Amazon Fire TV ASIN",
+                  "samsung_app_id": "Samsung TV app identifier",
+                  "apple_tv_bundle": "Apple TV app bundle identifier",
+                  "bundle_id": "Generic app bundle identifier",
+                  "venue_id": "DOOH venue identifier",
+                  "screen_id": "DOOH screen identifier within a venue",
+                  "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                  "rss_url": "RSS feed URL for podcast or content feed",
+                  "apple_podcast_id": "Apple Podcasts numeric ID",
+                  "spotify_collection_id": "Spotify show or collection URI",
+                  "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                  "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                  "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                },
+                "examples": [
+                  "domain",
+                  "ios_bundle",
+                  "venue_id",
+                  "apple_podcast_id",
+                  "station_id",
+                  "facility_id"
+                ]
+              },
+              "value": {
+                "type": "string",
+                "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        }
+      },
+      "additionalProperties": false
+    },
+    "brand": {
+      "title": "Brand Reference",
+      "description": "Brand reference. When provided, the agent automatically applies appropriate rules based on brand characteristics (industry, target_audience, etc.). Resolved at execution time.",
+      "type": "object",
+      "properties": {
+        "domain": {
+          "type": "string",
+          "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
+        "brand_id": {
+          "title": "Brand ID",
+          "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+          "type": "string",
+          "pattern": "^[a-z0-9_]+$",
+          "examples": [
+            "tide",
+            "cheerios",
+            "air_jordan",
+            "nike",
+            "pampers"
+          ]
+        }
+      },
+      "required": [
+        "domain"
+      ],
+      "additionalProperties": false,
+      "examples": [
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "spark"
+        },
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "glow"
+        },
+        {
+          "domain": "acme-corp.com"
+        }
+      ]
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate property list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "name"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.460Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/create-property-list-response.json b/schemas/cache/bundled/property/create-property-list-response.json
new file mode 100644
index 000000000..572210516
--- /dev/null
+++ b/schemas/cache/bundled/property/create-property-list-response.json
@@ -0,0 +1,736 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Property List Response",
+  "description": "Response payload for create_property_list task",
+  "type": "object",
+  "properties": {
+    "list": {
+      "title": "Property List",
+      "description": "The created property list",
+      "type": "object",
+      "properties": {
+        "list_id": {
+          "type": "string",
+          "description": "Unique identifier for this property list"
+        },
+        "name": {
+          "type": "string",
+          "description": "Human-readable name for the list"
+        },
+        "description": {
+          "type": "string",
+          "description": "Description of the list's purpose"
+        },
+        "principal": {
+          "type": "string",
+          "description": "Principal identity that owns this list"
+        },
+        "base_properties": {
+          "type": "array",
+          "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
+          "items": {
+            "title": "Base Property Source",
+            "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
+            "discriminator": {
+              "propertyName": "selection_type"
+            },
+            "oneOf": [
+              {
+                "type": "object",
+                "title": "Publisher Tags Source",
+                "description": "Select properties from a publisher by tag membership",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "publisher_tags",
+                    "description": "Discriminator indicating selection by property tags within a publisher"
+                  },
+                  "publisher_domain": {
+                    "type": "string",
+                    "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "tags": {
+                    "type": "array",
+                    "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+                    "items": {
+                      "title": "Property Tag",
+                      "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "ctv",
+                        "premium",
+                        "news",
+                        "sports",
+                        "meta_network",
+                        "social_media"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "publisher_domain",
+                  "tags"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "title": "Publisher Property IDs Source",
+                "description": "Select specific properties from a publisher by ID",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "publisher_ids",
+                    "description": "Discriminator indicating selection by specific property IDs within a publisher"
+                  },
+                  "publisher_domain": {
+                    "type": "string",
+                    "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "property_ids": {
+                    "type": "array",
+                    "description": "Specific property IDs from the publisher's adagents.json",
+                    "items": {
+                      "title": "Property ID",
+                      "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "cnn_ctv_app",
+                        "homepage",
+                        "mobile_ios",
+                        "instagram"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "publisher_domain",
+                  "property_ids"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "title": "Direct Identifiers Source",
+                "description": "Select properties by direct identifiers (domains, app IDs, etc.) without publisher context",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "identifiers",
+                    "description": "Discriminator indicating selection by direct identifiers"
+                  },
+                  "identifiers": {
+                    "type": "array",
+                    "description": "Direct property identifiers (domains, app IDs, etc.)",
+                    "items": {
+                      "title": "Identifier",
+                      "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                      "type": "object",
+                      "properties": {
+                        "type": {
+                          "title": "Property Identifier Types",
+                          "description": "Type of identifier",
+                          "type": "string",
+                          "enum": [
+                            "domain",
+                            "subdomain",
+                            "network_id",
+                            "ios_bundle",
+                            "android_package",
+                            "apple_app_store_id",
+                            "google_play_id",
+                            "roku_store_id",
+                            "fire_tv_asin",
+                            "samsung_app_id",
+                            "apple_tv_bundle",
+                            "bundle_id",
+                            "venue_id",
+                            "screen_id",
+                            "openooh_venue_type",
+                            "rss_url",
+                            "apple_podcast_id",
+                            "spotify_collection_id",
+                            "podcast_guid",
+                            "station_id",
+                            "facility_id"
+                          ],
+                          "enumDescriptions": {
+                            "domain": "Web domain (e.g., example.com)",
+                            "subdomain": "Specific subdomain (e.g., news.example.com)",
+                            "network_id": "Network or platform-specific identifier",
+                            "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                            "android_package": "Android package name (e.g., com.example.app)",
+                            "apple_app_store_id": "Apple App Store numeric ID",
+                            "google_play_id": "Google Play Store package ID",
+                            "roku_store_id": "Roku Channel Store identifier",
+                            "fire_tv_asin": "Amazon Fire TV ASIN",
+                            "samsung_app_id": "Samsung TV app identifier",
+                            "apple_tv_bundle": "Apple TV app bundle identifier",
+                            "bundle_id": "Generic app bundle identifier",
+                            "venue_id": "DOOH venue identifier",
+                            "screen_id": "DOOH screen identifier within a venue",
+                            "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                            "rss_url": "RSS feed URL for podcast or content feed",
+                            "apple_podcast_id": "Apple Podcasts numeric ID",
+                            "spotify_collection_id": "Spotify show or collection URI",
+                            "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                            "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                            "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                          },
+                          "examples": [
+                            "domain",
+                            "ios_bundle",
+                            "venue_id",
+                            "apple_podcast_id",
+                            "station_id",
+                            "facility_id"
+                          ]
+                        },
+                        "value": {
+                          "type": "string",
+                          "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "value"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "identifiers"
+                ],
+                "additionalProperties": false
+              }
+            ]
+          }
+        },
+        "filters": {
+          "title": "Property List Filters",
+          "description": "Dynamic filters applied when resolving the list",
+          "type": "object",
+          "properties": {
+            "countries_all": {
+              "type": "array",
+              "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
+              "items": {
+                "type": "string",
+                "pattern": "^[A-Z]{2}$"
+              },
+              "minItems": 1
+            },
+            "channels_any": {
+              "type": "array",
+              "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
+              "items": {
+                "title": "Media Channel",
+                "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                "type": "string",
+                "enum": [
+                  "display",
+                  "olv",
+                  "social",
+                  "search",
+                  "ctv",
+                  "linear_tv",
+                  "radio",
+                  "streaming_audio",
+                  "podcast",
+                  "dooh",
+                  "ooh",
+                  "print",
+                  "cinema",
+                  "email",
+                  "gaming",
+                  "retail_media",
+                  "influencer",
+                  "affiliate",
+                  "product_placement",
+                  "sponsored_intelligence"
+                ],
+                "enumDescriptions": {
+                  "display": "Digital display advertising (banners, native, rich media) across web and app",
+                  "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                  "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                  "search": "Search engine advertising and search networks",
+                  "ctv": "Connected TV and streaming on television screens",
+                  "linear_tv": "Traditional broadcast and cable television",
+                  "radio": "Traditional AM/FM radio broadcast",
+                  "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                  "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                  "dooh": "Digital out-of-home screens in public spaces",
+                  "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                  "print": "Newspapers, magazines, and other print publications",
+                  "cinema": "Movie theater advertising",
+                  "email": "Email advertising and sponsored newsletter content",
+                  "gaming": "In-game advertising across platforms",
+                  "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                  "influencer": "Creator and influencer marketing partnerships",
+                  "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                  "product_placement": "Product placement, branded content, and sponsorship integrations",
+                  "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                }
+              },
+              "minItems": 1
+            },
+            "property_types": {
+              "type": "array",
+              "description": "Filter to these property types",
+              "items": {
+                "title": "Property Type",
+                "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
+                "type": "string",
+                "enum": [
+                  "website",
+                  "mobile_app",
+                  "ctv_app",
+                  "desktop_app",
+                  "dooh",
+                  "podcast",
+                  "radio",
+                  "linear_tv",
+                  "streaming_audio",
+                  "ai_assistant"
+                ],
+                "enumDescriptions": {
+                  "website": "Web properties accessible via browser, identified by domain",
+                  "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
+                  "ctv_app": "Connected TV applications, identified by platform-specific store IDs",
+                  "desktop_app": "Desktop applications (Electron, native, Chromium wrappers), identified by application bundle IDs",
+                  "dooh": "Digital out-of-home screen networks, identified by network/venue IDs",
+                  "podcast": "Podcast feeds and episodes, identified by RSS feed URLs or podcast IDs",
+                  "radio": "Radio station properties, identified by station ID or facility ID",
+                  "linear_tv": "Linear television stations and networks, identified by station ID or facility ID",
+                  "streaming_audio": "Digital audio streaming properties, identified by platform-specific IDs",
+                  "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs"
+                }
+              },
+              "minItems": 1
+            },
+            "feature_requirements": {
+              "type": "array",
+              "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
+              "items": {
+                "title": "Feature Requirement",
+                "description": "A feature-based requirement \u2014 a reusable predicate over a feature value. Used by property list filters today; designed for reuse in other surfaces (audience filters, creative gates) in future versions. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
+                "type": "object",
+                "properties": {
+                  "feature_id": {
+                    "type": "string",
+                    "description": "Feature to evaluate (discovered via get_adcp_capabilities)"
+                  },
+                  "min_value": {
+                    "type": "number",
+                    "description": "Minimum numeric value required (for quantitative features)"
+                  },
+                  "max_value": {
+                    "type": "number",
+                    "description": "Maximum numeric value allowed (for quantitative features)"
+                  },
+                  "allowed_values": {
+                    "type": "array",
+                    "description": "Values that pass the requirement (for binary/categorical features)",
+                    "items": {},
+                    "minItems": 1
+                  },
+                  "if_not_covered": {
+                    "type": "string",
+                    "enum": [
+                      "exclude",
+                      "include"
+                    ],
+                    "default": "exclude",
+                    "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+                  },
+                  "policy_id": {
+                    "type": "string",
+                    "description": "Optional attribution \u2014 when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+                  }
+                },
+                "required": [
+                  "feature_id"
+                ],
+                "additionalProperties": false
+              },
+              "minItems": 1
+            },
+            "exclude_identifiers": {
+              "type": "array",
+              "description": "Identifiers to always exclude from results",
+              "items": {
+                "title": "Identifier",
+                "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "title": "Property Identifier Types",
+                    "description": "Type of identifier",
+                    "type": "string",
+                    "enum": [
+                      "domain",
+                      "subdomain",
+                      "network_id",
+                      "ios_bundle",
+                      "android_package",
+                      "apple_app_store_id",
+                      "google_play_id",
+                      "roku_store_id",
+                      "fire_tv_asin",
+                      "samsung_app_id",
+                      "apple_tv_bundle",
+                      "bundle_id",
+                      "venue_id",
+                      "screen_id",
+                      "openooh_venue_type",
+                      "rss_url",
+                      "apple_podcast_id",
+                      "spotify_collection_id",
+                      "podcast_guid",
+                      "station_id",
+                      "facility_id"
+                    ],
+                    "enumDescriptions": {
+                      "domain": "Web domain (e.g., example.com)",
+                      "subdomain": "Specific subdomain (e.g., news.example.com)",
+                      "network_id": "Network or platform-specific identifier",
+                      "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                      "android_package": "Android package name (e.g., com.example.app)",
+                      "apple_app_store_id": "Apple App Store numeric ID",
+                      "google_play_id": "Google Play Store package ID",
+                      "roku_store_id": "Roku Channel Store identifier",
+                      "fire_tv_asin": "Amazon Fire TV ASIN",
+                      "samsung_app_id": "Samsung TV app identifier",
+                      "apple_tv_bundle": "Apple TV app bundle identifier",
+                      "bundle_id": "Generic app bundle identifier",
+                      "venue_id": "DOOH venue identifier",
+                      "screen_id": "DOOH screen identifier within a venue",
+                      "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                      "rss_url": "RSS feed URL for podcast or content feed",
+                      "apple_podcast_id": "Apple Podcasts numeric ID",
+                      "spotify_collection_id": "Spotify show or collection URI",
+                      "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                      "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                      "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                    },
+                    "examples": [
+                      "domain",
+                      "ios_bundle",
+                      "venue_id",
+                      "apple_podcast_id",
+                      "station_id",
+                      "facility_id"
+                    ]
+                  },
+                  "value": {
+                    "type": "string",
+                    "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ],
+                "additionalProperties": false
+              },
+              "minItems": 1
+            }
+          },
+          "additionalProperties": false
+        },
+        "brand": {
+          "title": "Brand Reference",
+          "description": "Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.",
+          "type": "object",
+          "properties": {
+            "domain": {
+              "type": "string",
+              "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "brand_id": {
+              "title": "Brand ID",
+              "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+              "type": "string",
+              "pattern": "^[a-z0-9_]+$",
+              "examples": [
+                "tide",
+                "cheerios",
+                "air_jordan",
+                "nike",
+                "pampers"
+              ]
+            }
+          },
+          "required": [
+            "domain"
+          ],
+          "additionalProperties": false,
+          "examples": [
+            {
+              "domain": "nova-brands.com",
+              "brand_id": "spark"
+            },
+            {
+              "domain": "nova-brands.com",
+              "brand_id": "glow"
+            },
+            {
+              "domain": "acme-corp.com"
+            }
+          ]
+        },
+        "webhook_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to receive notifications when the resolved list changes"
+        },
+        "cache_duration_hours": {
+          "type": "integer",
+          "description": "Recommended cache duration for resolved list. Consumers should re-fetch after this period.",
+          "minimum": 1,
+          "default": 24
+        },
+        "created_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the list was created"
+        },
+        "updated_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the list was last modified"
+        },
+        "property_count": {
+          "type": "integer",
+          "description": "Number of properties in the resolved list (at time of last resolution)"
+        },
+        "pricing_options": {
+          "type": "array",
+          "description": "Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.",
+          "items": {
+            "title": "Vendor Pricing Option",
+            "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+            "allOf": [
+              {
+                "type": "object",
+                "properties": {
+                  "pricing_option_id": {
+                    "type": "string",
+                    "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                  }
+                },
+                "required": [
+                  "pricing_option_id"
+                ]
+              },
+              {
+                "title": "Vendor Pricing",
+                "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                "type": "object",
+                "oneOf": [
+                  {
+                    "title": "CpmPricing",
+                    "description": "Fixed cost per thousand impressions",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "cpm"
+                      },
+                      "cpm": {
+                        "type": "number",
+                        "description": "Cost per thousand impressions",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "cpm",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "PercentOfMediaPricing",
+                    "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "percent_of_media"
+                      },
+                      "percent": {
+                        "type": "number",
+                        "description": "Percentage of media spend, e.g. 15 = 15%",
+                        "minimum": 0,
+                        "maximum": 100
+                      },
+                      "max_cpm": {
+                        "type": "number",
+                        "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code for the resulting charge",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "percent",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "FlatFeePricing",
+                    "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "flat_fee"
+                      },
+                      "amount": {
+                        "type": "number",
+                        "description": "Fixed charge for the billing period",
+                        "minimum": 0
+                      },
+                      "period": {
+                        "type": "string",
+                        "enum": [
+                          "monthly",
+                          "quarterly",
+                          "annual",
+                          "campaign"
+                        ],
+                        "description": "Billing period for the flat fee."
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "amount",
+                      "period",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "PerUnitPricing",
+                    "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "per_unit"
+                      },
+                      "unit": {
+                        "type": "string",
+                        "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                      },
+                      "unit_price": {
+                        "type": "number",
+                        "description": "Cost per one unit",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "unit",
+                      "unit_price",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  }
+                ]
+              }
+            ]
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "list_id",
+        "name"
+      ],
+      "additionalProperties": false
+    },
+    "auth_token": {
+      "type": "string",
+      "description": "Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "list",
+    "auth_token"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.461Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/delete-property-list-request.json b/schemas/cache/bundled/property/delete-property-list-request.json
new file mode 100644
index 000000000..bbbcdc5b8
--- /dev/null
+++ b/schemas/cache/bundled/property/delete-property-list-request.json
@@ -0,0 +1,46 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Delete Property List Request",
+  "description": "Request parameters for deleting a property list",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list to delete"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "list_id"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.462Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/delete-property-list-response.json b/schemas/cache/bundled/property/delete-property-list-response.json
new file mode 100644
index 000000000..c1fed5b75
--- /dev/null
+++ b/schemas/cache/bundled/property/delete-property-list-response.json
@@ -0,0 +1,37 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Delete Property List Response",
+  "description": "Response payload for delete_property_list task",
+  "type": "object",
+  "properties": {
+    "deleted": {
+      "type": "boolean",
+      "description": "Whether the list was successfully deleted"
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the deleted list"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "deleted",
+    "list_id"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.462Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/get-property-list-request.json b/schemas/cache/bundled/property/get-property-list-request.json
new file mode 100644
index 000000000..de0ca5c94
--- /dev/null
+++ b/schemas/cache/bundled/property/get-property-list-request.json
@@ -0,0 +1,61 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Property List Request",
+  "description": "Request parameters for retrieving a property list with resolved identifiers",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list to retrieve"
+    },
+    "resolve": {
+      "type": "boolean",
+      "description": "Whether to apply filters and return resolved identifiers (default: true)",
+      "default": true
+    },
+    "pagination": {
+      "type": "object",
+      "description": "Pagination parameters. Uses higher limits than standard pagination because property lists can contain tens of thousands of identifiers.",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 10000,
+          "default": 1000,
+          "description": "Maximum number of identifiers to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "list_id"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.463Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/get-property-list-response.json b/schemas/cache/bundled/property/get-property-list-response.json
new file mode 100644
index 000000000..b0a742c47
--- /dev/null
+++ b/schemas/cache/bundled/property/get-property-list-response.json
@@ -0,0 +1,926 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Property List Response",
+  "description": "Response payload for get_property_list task. Returns identifiers only (not full property objects or scores). Consumers should cache the resolved identifiers and refresh based on cache_valid_until.",
+  "type": "object",
+  "properties": {
+    "list": {
+      "title": "Property List",
+      "description": "The property list metadata (always returned)",
+      "type": "object",
+      "properties": {
+        "list_id": {
+          "type": "string",
+          "description": "Unique identifier for this property list"
+        },
+        "name": {
+          "type": "string",
+          "description": "Human-readable name for the list"
+        },
+        "description": {
+          "type": "string",
+          "description": "Description of the list's purpose"
+        },
+        "principal": {
+          "type": "string",
+          "description": "Principal identity that owns this list"
+        },
+        "base_properties": {
+          "type": "array",
+          "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
+          "items": {
+            "title": "Base Property Source",
+            "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
+            "discriminator": {
+              "propertyName": "selection_type"
+            },
+            "oneOf": [
+              {
+                "type": "object",
+                "title": "Publisher Tags Source",
+                "description": "Select properties from a publisher by tag membership",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "publisher_tags",
+                    "description": "Discriminator indicating selection by property tags within a publisher"
+                  },
+                  "publisher_domain": {
+                    "type": "string",
+                    "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "tags": {
+                    "type": "array",
+                    "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+                    "items": {
+                      "title": "Property Tag",
+                      "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "ctv",
+                        "premium",
+                        "news",
+                        "sports",
+                        "meta_network",
+                        "social_media"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "publisher_domain",
+                  "tags"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "title": "Publisher Property IDs Source",
+                "description": "Select specific properties from a publisher by ID",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "publisher_ids",
+                    "description": "Discriminator indicating selection by specific property IDs within a publisher"
+                  },
+                  "publisher_domain": {
+                    "type": "string",
+                    "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "property_ids": {
+                    "type": "array",
+                    "description": "Specific property IDs from the publisher's adagents.json",
+                    "items": {
+                      "title": "Property ID",
+                      "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "cnn_ctv_app",
+                        "homepage",
+                        "mobile_ios",
+                        "instagram"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "publisher_domain",
+                  "property_ids"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "title": "Direct Identifiers Source",
+                "description": "Select properties by direct identifiers (domains, app IDs, etc.) without publisher context",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "identifiers",
+                    "description": "Discriminator indicating selection by direct identifiers"
+                  },
+                  "identifiers": {
+                    "type": "array",
+                    "description": "Direct property identifiers (domains, app IDs, etc.)",
+                    "items": {
+                      "title": "Identifier",
+                      "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                      "type": "object",
+                      "properties": {
+                        "type": {
+                          "title": "Property Identifier Types",
+                          "description": "Type of identifier",
+                          "type": "string",
+                          "enum": [
+                            "domain",
+                            "subdomain",
+                            "network_id",
+                            "ios_bundle",
+                            "android_package",
+                            "apple_app_store_id",
+                            "google_play_id",
+                            "roku_store_id",
+                            "fire_tv_asin",
+                            "samsung_app_id",
+                            "apple_tv_bundle",
+                            "bundle_id",
+                            "venue_id",
+                            "screen_id",
+                            "openooh_venue_type",
+                            "rss_url",
+                            "apple_podcast_id",
+                            "spotify_collection_id",
+                            "podcast_guid",
+                            "station_id",
+                            "facility_id"
+                          ],
+                          "enumDescriptions": {
+                            "domain": "Web domain (e.g., example.com)",
+                            "subdomain": "Specific subdomain (e.g., news.example.com)",
+                            "network_id": "Network or platform-specific identifier",
+                            "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                            "android_package": "Android package name (e.g., com.example.app)",
+                            "apple_app_store_id": "Apple App Store numeric ID",
+                            "google_play_id": "Google Play Store package ID",
+                            "roku_store_id": "Roku Channel Store identifier",
+                            "fire_tv_asin": "Amazon Fire TV ASIN",
+                            "samsung_app_id": "Samsung TV app identifier",
+                            "apple_tv_bundle": "Apple TV app bundle identifier",
+                            "bundle_id": "Generic app bundle identifier",
+                            "venue_id": "DOOH venue identifier",
+                            "screen_id": "DOOH screen identifier within a venue",
+                            "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                            "rss_url": "RSS feed URL for podcast or content feed",
+                            "apple_podcast_id": "Apple Podcasts numeric ID",
+                            "spotify_collection_id": "Spotify show or collection URI",
+                            "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                            "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                            "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                          },
+                          "examples": [
+                            "domain",
+                            "ios_bundle",
+                            "venue_id",
+                            "apple_podcast_id",
+                            "station_id",
+                            "facility_id"
+                          ]
+                        },
+                        "value": {
+                          "type": "string",
+                          "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "value"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "identifiers"
+                ],
+                "additionalProperties": false
+              }
+            ]
+          }
+        },
+        "filters": {
+          "title": "Property List Filters",
+          "description": "Dynamic filters applied when resolving the list",
+          "type": "object",
+          "properties": {
+            "countries_all": {
+              "type": "array",
+              "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
+              "items": {
+                "type": "string",
+                "pattern": "^[A-Z]{2}$"
+              },
+              "minItems": 1
+            },
+            "channels_any": {
+              "type": "array",
+              "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
+              "items": {
+                "title": "Media Channel",
+                "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                "type": "string",
+                "enum": [
+                  "display",
+                  "olv",
+                  "social",
+                  "search",
+                  "ctv",
+                  "linear_tv",
+                  "radio",
+                  "streaming_audio",
+                  "podcast",
+                  "dooh",
+                  "ooh",
+                  "print",
+                  "cinema",
+                  "email",
+                  "gaming",
+                  "retail_media",
+                  "influencer",
+                  "affiliate",
+                  "product_placement",
+                  "sponsored_intelligence"
+                ],
+                "enumDescriptions": {
+                  "display": "Digital display advertising (banners, native, rich media) across web and app",
+                  "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                  "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                  "search": "Search engine advertising and search networks",
+                  "ctv": "Connected TV and streaming on television screens",
+                  "linear_tv": "Traditional broadcast and cable television",
+                  "radio": "Traditional AM/FM radio broadcast",
+                  "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                  "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                  "dooh": "Digital out-of-home screens in public spaces",
+                  "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                  "print": "Newspapers, magazines, and other print publications",
+                  "cinema": "Movie theater advertising",
+                  "email": "Email advertising and sponsored newsletter content",
+                  "gaming": "In-game advertising across platforms",
+                  "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                  "influencer": "Creator and influencer marketing partnerships",
+                  "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                  "product_placement": "Product placement, branded content, and sponsorship integrations",
+                  "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                }
+              },
+              "minItems": 1
+            },
+            "property_types": {
+              "type": "array",
+              "description": "Filter to these property types",
+              "items": {
+                "title": "Property Type",
+                "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
+                "type": "string",
+                "enum": [
+                  "website",
+                  "mobile_app",
+                  "ctv_app",
+                  "desktop_app",
+                  "dooh",
+                  "podcast",
+                  "radio",
+                  "linear_tv",
+                  "streaming_audio",
+                  "ai_assistant"
+                ],
+                "enumDescriptions": {
+                  "website": "Web properties accessible via browser, identified by domain",
+                  "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
+                  "ctv_app": "Connected TV applications, identified by platform-specific store IDs",
+                  "desktop_app": "Desktop applications (Electron, native, Chromium wrappers), identified by application bundle IDs",
+                  "dooh": "Digital out-of-home screen networks, identified by network/venue IDs",
+                  "podcast": "Podcast feeds and episodes, identified by RSS feed URLs or podcast IDs",
+                  "radio": "Radio station properties, identified by station ID or facility ID",
+                  "linear_tv": "Linear television stations and networks, identified by station ID or facility ID",
+                  "streaming_audio": "Digital audio streaming properties, identified by platform-specific IDs",
+                  "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs"
+                }
+              },
+              "minItems": 1
+            },
+            "feature_requirements": {
+              "type": "array",
+              "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
+              "items": {
+                "title": "Feature Requirement",
+                "description": "A feature-based requirement \u2014 a reusable predicate over a feature value. Used by property list filters today; designed for reuse in other surfaces (audience filters, creative gates) in future versions. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
+                "type": "object",
+                "properties": {
+                  "feature_id": {
+                    "type": "string",
+                    "description": "Feature to evaluate (discovered via get_adcp_capabilities)"
+                  },
+                  "min_value": {
+                    "type": "number",
+                    "description": "Minimum numeric value required (for quantitative features)"
+                  },
+                  "max_value": {
+                    "type": "number",
+                    "description": "Maximum numeric value allowed (for quantitative features)"
+                  },
+                  "allowed_values": {
+                    "type": "array",
+                    "description": "Values that pass the requirement (for binary/categorical features)",
+                    "items": {},
+                    "minItems": 1
+                  },
+                  "if_not_covered": {
+                    "type": "string",
+                    "enum": [
+                      "exclude",
+                      "include"
+                    ],
+                    "default": "exclude",
+                    "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+                  },
+                  "policy_id": {
+                    "type": "string",
+                    "description": "Optional attribution \u2014 when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+                  }
+                },
+                "required": [
+                  "feature_id"
+                ],
+                "additionalProperties": false
+              },
+              "minItems": 1
+            },
+            "exclude_identifiers": {
+              "type": "array",
+              "description": "Identifiers to always exclude from results",
+              "items": {
+                "title": "Identifier",
+                "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "title": "Property Identifier Types",
+                    "description": "Type of identifier",
+                    "type": "string",
+                    "enum": [
+                      "domain",
+                      "subdomain",
+                      "network_id",
+                      "ios_bundle",
+                      "android_package",
+                      "apple_app_store_id",
+                      "google_play_id",
+                      "roku_store_id",
+                      "fire_tv_asin",
+                      "samsung_app_id",
+                      "apple_tv_bundle",
+                      "bundle_id",
+                      "venue_id",
+                      "screen_id",
+                      "openooh_venue_type",
+                      "rss_url",
+                      "apple_podcast_id",
+                      "spotify_collection_id",
+                      "podcast_guid",
+                      "station_id",
+                      "facility_id"
+                    ],
+                    "enumDescriptions": {
+                      "domain": "Web domain (e.g., example.com)",
+                      "subdomain": "Specific subdomain (e.g., news.example.com)",
+                      "network_id": "Network or platform-specific identifier",
+                      "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                      "android_package": "Android package name (e.g., com.example.app)",
+                      "apple_app_store_id": "Apple App Store numeric ID",
+                      "google_play_id": "Google Play Store package ID",
+                      "roku_store_id": "Roku Channel Store identifier",
+                      "fire_tv_asin": "Amazon Fire TV ASIN",
+                      "samsung_app_id": "Samsung TV app identifier",
+                      "apple_tv_bundle": "Apple TV app bundle identifier",
+                      "bundle_id": "Generic app bundle identifier",
+                      "venue_id": "DOOH venue identifier",
+                      "screen_id": "DOOH screen identifier within a venue",
+                      "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                      "rss_url": "RSS feed URL for podcast or content feed",
+                      "apple_podcast_id": "Apple Podcasts numeric ID",
+                      "spotify_collection_id": "Spotify show or collection URI",
+                      "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                      "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                      "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                    },
+                    "examples": [
+                      "domain",
+                      "ios_bundle",
+                      "venue_id",
+                      "apple_podcast_id",
+                      "station_id",
+                      "facility_id"
+                    ]
+                  },
+                  "value": {
+                    "type": "string",
+                    "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ],
+                "additionalProperties": false
+              },
+              "minItems": 1
+            }
+          },
+          "additionalProperties": false
+        },
+        "brand": {
+          "title": "Brand Reference",
+          "description": "Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.",
+          "type": "object",
+          "properties": {
+            "domain": {
+              "type": "string",
+              "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "brand_id": {
+              "title": "Brand ID",
+              "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+              "type": "string",
+              "pattern": "^[a-z0-9_]+$",
+              "examples": [
+                "tide",
+                "cheerios",
+                "air_jordan",
+                "nike",
+                "pampers"
+              ]
+            }
+          },
+          "required": [
+            "domain"
+          ],
+          "additionalProperties": false,
+          "examples": [
+            {
+              "domain": "nova-brands.com",
+              "brand_id": "spark"
+            },
+            {
+              "domain": "nova-brands.com",
+              "brand_id": "glow"
+            },
+            {
+              "domain": "acme-corp.com"
+            }
+          ]
+        },
+        "webhook_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to receive notifications when the resolved list changes"
+        },
+        "cache_duration_hours": {
+          "type": "integer",
+          "description": "Recommended cache duration for resolved list. Consumers should re-fetch after this period.",
+          "minimum": 1,
+          "default": 24
+        },
+        "created_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the list was created"
+        },
+        "updated_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the list was last modified"
+        },
+        "property_count": {
+          "type": "integer",
+          "description": "Number of properties in the resolved list (at time of last resolution)"
+        },
+        "pricing_options": {
+          "type": "array",
+          "description": "Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.",
+          "items": {
+            "title": "Vendor Pricing Option",
+            "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+            "allOf": [
+              {
+                "type": "object",
+                "properties": {
+                  "pricing_option_id": {
+                    "type": "string",
+                    "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                  }
+                },
+                "required": [
+                  "pricing_option_id"
+                ]
+              },
+              {
+                "title": "Vendor Pricing",
+                "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                "type": "object",
+                "oneOf": [
+                  {
+                    "title": "CpmPricing",
+                    "description": "Fixed cost per thousand impressions",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "cpm"
+                      },
+                      "cpm": {
+                        "type": "number",
+                        "description": "Cost per thousand impressions",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "cpm",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "PercentOfMediaPricing",
+                    "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "percent_of_media"
+                      },
+                      "percent": {
+                        "type": "number",
+                        "description": "Percentage of media spend, e.g. 15 = 15%",
+                        "minimum": 0,
+                        "maximum": 100
+                      },
+                      "max_cpm": {
+                        "type": "number",
+                        "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code for the resulting charge",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "percent",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "FlatFeePricing",
+                    "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "flat_fee"
+                      },
+                      "amount": {
+                        "type": "number",
+                        "description": "Fixed charge for the billing period",
+                        "minimum": 0
+                      },
+                      "period": {
+                        "type": "string",
+                        "enum": [
+                          "monthly",
+                          "quarterly",
+                          "annual",
+                          "campaign"
+                        ],
+                        "description": "Billing period for the flat fee."
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "amount",
+                      "period",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "PerUnitPricing",
+                    "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "per_unit"
+                      },
+                      "unit": {
+                        "type": "string",
+                        "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                      },
+                      "unit_price": {
+                        "type": "number",
+                        "description": "Cost per one unit",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "unit",
+                      "unit_price",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  }
+                ]
+              }
+            ]
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "list_id",
+        "name"
+      ],
+      "additionalProperties": false
+    },
+    "identifiers": {
+      "type": "array",
+      "description": "Resolved identifiers that passed filters (if resolve=true). Cache these locally for real-time use.",
+      "items": {
+        "title": "Identifier",
+        "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+        "type": "object",
+        "properties": {
+          "type": {
+            "title": "Property Identifier Types",
+            "description": "Type of identifier",
+            "type": "string",
+            "enum": [
+              "domain",
+              "subdomain",
+              "network_id",
+              "ios_bundle",
+              "android_package",
+              "apple_app_store_id",
+              "google_play_id",
+              "roku_store_id",
+              "fire_tv_asin",
+              "samsung_app_id",
+              "apple_tv_bundle",
+              "bundle_id",
+              "venue_id",
+              "screen_id",
+              "openooh_venue_type",
+              "rss_url",
+              "apple_podcast_id",
+              "spotify_collection_id",
+              "podcast_guid",
+              "station_id",
+              "facility_id"
+            ],
+            "enumDescriptions": {
+              "domain": "Web domain (e.g., example.com)",
+              "subdomain": "Specific subdomain (e.g., news.example.com)",
+              "network_id": "Network or platform-specific identifier",
+              "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+              "android_package": "Android package name (e.g., com.example.app)",
+              "apple_app_store_id": "Apple App Store numeric ID",
+              "google_play_id": "Google Play Store package ID",
+              "roku_store_id": "Roku Channel Store identifier",
+              "fire_tv_asin": "Amazon Fire TV ASIN",
+              "samsung_app_id": "Samsung TV app identifier",
+              "apple_tv_bundle": "Apple TV app bundle identifier",
+              "bundle_id": "Generic app bundle identifier",
+              "venue_id": "DOOH venue identifier",
+              "screen_id": "DOOH screen identifier within a venue",
+              "openooh_venue_type": "OpenOOH venue taxonomy classification",
+              "rss_url": "RSS feed URL for podcast or content feed",
+              "apple_podcast_id": "Apple Podcasts numeric ID",
+              "spotify_collection_id": "Spotify show or collection URI",
+              "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+              "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+              "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+            },
+            "examples": [
+              "domain",
+              "ios_bundle",
+              "venue_id",
+              "apple_podcast_id",
+              "station_id",
+              "facility_id"
+            ]
+          },
+          "value": {
+            "type": "string",
+            "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+          }
+        },
+        "required": [
+          "type",
+          "value"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "resolved_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the list was resolved"
+    },
+    "cache_valid_until": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Cache expiration timestamp. Re-fetch the list after this time to get updated identifiers."
+    },
+    "coverage_gaps": {
+      "type": "object",
+      "description": "Properties included in the list despite missing feature data. Only present when a feature_requirement has if_not_covered='include'. Maps feature_id to list of identifiers not covered for that feature.",
+      "additionalProperties": {
+        "type": "array",
+        "items": {
+          "title": "Identifier",
+          "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+          "type": "object",
+          "properties": {
+            "type": {
+              "title": "Property Identifier Types",
+              "description": "Type of identifier",
+              "type": "string",
+              "enum": [
+                "domain",
+                "subdomain",
+                "network_id",
+                "ios_bundle",
+                "android_package",
+                "apple_app_store_id",
+                "google_play_id",
+                "roku_store_id",
+                "fire_tv_asin",
+                "samsung_app_id",
+                "apple_tv_bundle",
+                "bundle_id",
+                "venue_id",
+                "screen_id",
+                "openooh_venue_type",
+                "rss_url",
+                "apple_podcast_id",
+                "spotify_collection_id",
+                "podcast_guid",
+                "station_id",
+                "facility_id"
+              ],
+              "enumDescriptions": {
+                "domain": "Web domain (e.g., example.com)",
+                "subdomain": "Specific subdomain (e.g., news.example.com)",
+                "network_id": "Network or platform-specific identifier",
+                "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                "android_package": "Android package name (e.g., com.example.app)",
+                "apple_app_store_id": "Apple App Store numeric ID",
+                "google_play_id": "Google Play Store package ID",
+                "roku_store_id": "Roku Channel Store identifier",
+                "fire_tv_asin": "Amazon Fire TV ASIN",
+                "samsung_app_id": "Samsung TV app identifier",
+                "apple_tv_bundle": "Apple TV app bundle identifier",
+                "bundle_id": "Generic app bundle identifier",
+                "venue_id": "DOOH venue identifier",
+                "screen_id": "DOOH screen identifier within a venue",
+                "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                "rss_url": "RSS feed URL for podcast or content feed",
+                "apple_podcast_id": "Apple Podcasts numeric ID",
+                "spotify_collection_id": "Spotify show or collection URI",
+                "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+              },
+              "examples": [
+                "domain",
+                "ios_bundle",
+                "venue_id",
+                "apple_podcast_id",
+                "station_id",
+                "facility_id"
+              ]
+            },
+            "value": {
+              "type": "string",
+              "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+            }
+          },
+          "required": [
+            "type",
+            "value"
+          ],
+          "additionalProperties": false
+        }
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "list"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.464Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/list-property-lists-request.json b/schemas/cache/bundled/property/list-property-lists-request.json
new file mode 100644
index 000000000..6e93b022f
--- /dev/null
+++ b/schemas/cache/bundled/property/list-property-lists-request.json
@@ -0,0 +1,58 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Property Lists Request",
+  "description": "Request parameters for listing property lists",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "principal": {
+      "type": "string",
+      "description": "Filter to lists owned by this principal"
+    },
+    "name_contains": {
+      "type": "string",
+      "description": "Filter to lists whose name contains this string"
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.465Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/list-property-lists-response.json b/schemas/cache/bundled/property/list-property-lists-response.json
new file mode 100644
index 000000000..bf84c9f33
--- /dev/null
+++ b/schemas/cache/bundled/property/list-property-lists-response.json
@@ -0,0 +1,759 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Property Lists Response",
+  "description": "Response payload for list_property_lists task",
+  "type": "object",
+  "properties": {
+    "lists": {
+      "type": "array",
+      "description": "Array of property lists (metadata only, not resolved properties)",
+      "items": {
+        "title": "Property List",
+        "description": "A managed property list with optional filters for dynamic evaluation. Lists are resolved at setup time and cached by orchestrators/sellers for real-time use.",
+        "type": "object",
+        "properties": {
+          "list_id": {
+            "type": "string",
+            "description": "Unique identifier for this property list"
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for the list"
+          },
+          "description": {
+            "type": "string",
+            "description": "Description of the list's purpose"
+          },
+          "principal": {
+            "type": "string",
+            "description": "Principal identity that owns this list"
+          },
+          "base_properties": {
+            "type": "array",
+            "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
+            "items": {
+              "title": "Base Property Source",
+              "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
+              "discriminator": {
+                "propertyName": "selection_type"
+              },
+              "oneOf": [
+                {
+                  "type": "object",
+                  "title": "Publisher Tags Source",
+                  "description": "Select properties from a publisher by tag membership",
+                  "properties": {
+                    "selection_type": {
+                      "type": "string",
+                      "const": "publisher_tags",
+                      "description": "Discriminator indicating selection by property tags within a publisher"
+                    },
+                    "publisher_domain": {
+                      "type": "string",
+                      "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "tags": {
+                      "type": "array",
+                      "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+                      "items": {
+                        "title": "Property Tag",
+                        "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "ctv",
+                          "premium",
+                          "news",
+                          "sports",
+                          "meta_network",
+                          "social_media"
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "selection_type",
+                    "publisher_domain",
+                    "tags"
+                  ],
+                  "additionalProperties": false
+                },
+                {
+                  "type": "object",
+                  "title": "Publisher Property IDs Source",
+                  "description": "Select specific properties from a publisher by ID",
+                  "properties": {
+                    "selection_type": {
+                      "type": "string",
+                      "const": "publisher_ids",
+                      "description": "Discriminator indicating selection by specific property IDs within a publisher"
+                    },
+                    "publisher_domain": {
+                      "type": "string",
+                      "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                    },
+                    "property_ids": {
+                      "type": "array",
+                      "description": "Specific property IDs from the publisher's adagents.json",
+                      "items": {
+                        "title": "Property ID",
+                        "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+                        "type": "string",
+                        "pattern": "^[a-z0-9_]+$",
+                        "examples": [
+                          "cnn_ctv_app",
+                          "homepage",
+                          "mobile_ios",
+                          "instagram"
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "selection_type",
+                    "publisher_domain",
+                    "property_ids"
+                  ],
+                  "additionalProperties": false
+                },
+                {
+                  "type": "object",
+                  "title": "Direct Identifiers Source",
+                  "description": "Select properties by direct identifiers (domains, app IDs, etc.) without publisher context",
+                  "properties": {
+                    "selection_type": {
+                      "type": "string",
+                      "const": "identifiers",
+                      "description": "Discriminator indicating selection by direct identifiers"
+                    },
+                    "identifiers": {
+                      "type": "array",
+                      "description": "Direct property identifiers (domains, app IDs, etc.)",
+                      "items": {
+                        "title": "Identifier",
+                        "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                        "type": "object",
+                        "properties": {
+                          "type": {
+                            "title": "Property Identifier Types",
+                            "description": "Type of identifier",
+                            "type": "string",
+                            "enum": [
+                              "domain",
+                              "subdomain",
+                              "network_id",
+                              "ios_bundle",
+                              "android_package",
+                              "apple_app_store_id",
+                              "google_play_id",
+                              "roku_store_id",
+                              "fire_tv_asin",
+                              "samsung_app_id",
+                              "apple_tv_bundle",
+                              "bundle_id",
+                              "venue_id",
+                              "screen_id",
+                              "openooh_venue_type",
+                              "rss_url",
+                              "apple_podcast_id",
+                              "spotify_collection_id",
+                              "podcast_guid",
+                              "station_id",
+                              "facility_id"
+                            ],
+                            "enumDescriptions": {
+                              "domain": "Web domain (e.g., example.com)",
+                              "subdomain": "Specific subdomain (e.g., news.example.com)",
+                              "network_id": "Network or platform-specific identifier",
+                              "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                              "android_package": "Android package name (e.g., com.example.app)",
+                              "apple_app_store_id": "Apple App Store numeric ID",
+                              "google_play_id": "Google Play Store package ID",
+                              "roku_store_id": "Roku Channel Store identifier",
+                              "fire_tv_asin": "Amazon Fire TV ASIN",
+                              "samsung_app_id": "Samsung TV app identifier",
+                              "apple_tv_bundle": "Apple TV app bundle identifier",
+                              "bundle_id": "Generic app bundle identifier",
+                              "venue_id": "DOOH venue identifier",
+                              "screen_id": "DOOH screen identifier within a venue",
+                              "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                              "rss_url": "RSS feed URL for podcast or content feed",
+                              "apple_podcast_id": "Apple Podcasts numeric ID",
+                              "spotify_collection_id": "Spotify show or collection URI",
+                              "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                              "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                              "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                            },
+                            "examples": [
+                              "domain",
+                              "ios_bundle",
+                              "venue_id",
+                              "apple_podcast_id",
+                              "station_id",
+                              "facility_id"
+                            ]
+                          },
+                          "value": {
+                            "type": "string",
+                            "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                          }
+                        },
+                        "required": [
+                          "type",
+                          "value"
+                        ],
+                        "additionalProperties": false
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "selection_type",
+                    "identifiers"
+                  ],
+                  "additionalProperties": false
+                }
+              ]
+            }
+          },
+          "filters": {
+            "title": "Property List Filters",
+            "description": "Dynamic filters applied when resolving the list",
+            "type": "object",
+            "properties": {
+              "countries_all": {
+                "type": "array",
+                "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "channels_any": {
+                "type": "array",
+                "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
+                "items": {
+                  "title": "Media Channel",
+                  "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                  "type": "string",
+                  "enum": [
+                    "display",
+                    "olv",
+                    "social",
+                    "search",
+                    "ctv",
+                    "linear_tv",
+                    "radio",
+                    "streaming_audio",
+                    "podcast",
+                    "dooh",
+                    "ooh",
+                    "print",
+                    "cinema",
+                    "email",
+                    "gaming",
+                    "retail_media",
+                    "influencer",
+                    "affiliate",
+                    "product_placement",
+                    "sponsored_intelligence"
+                  ],
+                  "enumDescriptions": {
+                    "display": "Digital display advertising (banners, native, rich media) across web and app",
+                    "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                    "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                    "search": "Search engine advertising and search networks",
+                    "ctv": "Connected TV and streaming on television screens",
+                    "linear_tv": "Traditional broadcast and cable television",
+                    "radio": "Traditional AM/FM radio broadcast",
+                    "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                    "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                    "dooh": "Digital out-of-home screens in public spaces",
+                    "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                    "print": "Newspapers, magazines, and other print publications",
+                    "cinema": "Movie theater advertising",
+                    "email": "Email advertising and sponsored newsletter content",
+                    "gaming": "In-game advertising across platforms",
+                    "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                    "influencer": "Creator and influencer marketing partnerships",
+                    "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                    "product_placement": "Product placement, branded content, and sponsorship integrations",
+                    "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                  }
+                },
+                "minItems": 1
+              },
+              "property_types": {
+                "type": "array",
+                "description": "Filter to these property types",
+                "items": {
+                  "title": "Property Type",
+                  "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
+                  "type": "string",
+                  "enum": [
+                    "website",
+                    "mobile_app",
+                    "ctv_app",
+                    "desktop_app",
+                    "dooh",
+                    "podcast",
+                    "radio",
+                    "linear_tv",
+                    "streaming_audio",
+                    "ai_assistant"
+                  ],
+                  "enumDescriptions": {
+                    "website": "Web properties accessible via browser, identified by domain",
+                    "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
+                    "ctv_app": "Connected TV applications, identified by platform-specific store IDs",
+                    "desktop_app": "Desktop applications (Electron, native, Chromium wrappers), identified by application bundle IDs",
+                    "dooh": "Digital out-of-home screen networks, identified by network/venue IDs",
+                    "podcast": "Podcast feeds and episodes, identified by RSS feed URLs or podcast IDs",
+                    "radio": "Radio station properties, identified by station ID or facility ID",
+                    "linear_tv": "Linear television stations and networks, identified by station ID or facility ID",
+                    "streaming_audio": "Digital audio streaming properties, identified by platform-specific IDs",
+                    "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs"
+                  }
+                },
+                "minItems": 1
+              },
+              "feature_requirements": {
+                "type": "array",
+                "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
+                "items": {
+                  "title": "Feature Requirement",
+                  "description": "A feature-based requirement \u2014 a reusable predicate over a feature value. Used by property list filters today; designed for reuse in other surfaces (audience filters, creative gates) in future versions. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
+                  "type": "object",
+                  "properties": {
+                    "feature_id": {
+                      "type": "string",
+                      "description": "Feature to evaluate (discovered via get_adcp_capabilities)"
+                    },
+                    "min_value": {
+                      "type": "number",
+                      "description": "Minimum numeric value required (for quantitative features)"
+                    },
+                    "max_value": {
+                      "type": "number",
+                      "description": "Maximum numeric value allowed (for quantitative features)"
+                    },
+                    "allowed_values": {
+                      "type": "array",
+                      "description": "Values that pass the requirement (for binary/categorical features)",
+                      "items": {},
+                      "minItems": 1
+                    },
+                    "if_not_covered": {
+                      "type": "string",
+                      "enum": [
+                        "exclude",
+                        "include"
+                      ],
+                      "default": "exclude",
+                      "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+                    },
+                    "policy_id": {
+                      "type": "string",
+                      "description": "Optional attribution \u2014 when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+                    }
+                  },
+                  "required": [
+                    "feature_id"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              },
+              "exclude_identifiers": {
+                "type": "array",
+                "description": "Identifiers to always exclude from results",
+                "items": {
+                  "title": "Identifier",
+                  "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "title": "Property Identifier Types",
+                      "description": "Type of identifier",
+                      "type": "string",
+                      "enum": [
+                        "domain",
+                        "subdomain",
+                        "network_id",
+                        "ios_bundle",
+                        "android_package",
+                        "apple_app_store_id",
+                        "google_play_id",
+                        "roku_store_id",
+                        "fire_tv_asin",
+                        "samsung_app_id",
+                        "apple_tv_bundle",
+                        "bundle_id",
+                        "venue_id",
+                        "screen_id",
+                        "openooh_venue_type",
+                        "rss_url",
+                        "apple_podcast_id",
+                        "spotify_collection_id",
+                        "podcast_guid",
+                        "station_id",
+                        "facility_id"
+                      ],
+                      "enumDescriptions": {
+                        "domain": "Web domain (e.g., example.com)",
+                        "subdomain": "Specific subdomain (e.g., news.example.com)",
+                        "network_id": "Network or platform-specific identifier",
+                        "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                        "android_package": "Android package name (e.g., com.example.app)",
+                        "apple_app_store_id": "Apple App Store numeric ID",
+                        "google_play_id": "Google Play Store package ID",
+                        "roku_store_id": "Roku Channel Store identifier",
+                        "fire_tv_asin": "Amazon Fire TV ASIN",
+                        "samsung_app_id": "Samsung TV app identifier",
+                        "apple_tv_bundle": "Apple TV app bundle identifier",
+                        "bundle_id": "Generic app bundle identifier",
+                        "venue_id": "DOOH venue identifier",
+                        "screen_id": "DOOH screen identifier within a venue",
+                        "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                        "rss_url": "RSS feed URL for podcast or content feed",
+                        "apple_podcast_id": "Apple Podcasts numeric ID",
+                        "spotify_collection_id": "Spotify show or collection URI",
+                        "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                        "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                        "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                      },
+                      "examples": [
+                        "domain",
+                        "ios_bundle",
+                        "venue_id",
+                        "apple_podcast_id",
+                        "station_id",
+                        "facility_id"
+                      ]
+                    },
+                    "value": {
+                      "type": "string",
+                      "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "value"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              }
+            },
+            "additionalProperties": false
+          },
+          "brand": {
+            "title": "Brand Reference",
+            "description": "Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.",
+            "type": "object",
+            "properties": {
+              "domain": {
+                "type": "string",
+                "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "brand_id": {
+                "title": "Brand ID",
+                "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                "type": "string",
+                "pattern": "^[a-z0-9_]+$",
+                "examples": [
+                  "tide",
+                  "cheerios",
+                  "air_jordan",
+                  "nike",
+                  "pampers"
+                ]
+              }
+            },
+            "required": [
+              "domain"
+            ],
+            "additionalProperties": false,
+            "examples": [
+              {
+                "domain": "nova-brands.com",
+                "brand_id": "spark"
+              },
+              {
+                "domain": "nova-brands.com",
+                "brand_id": "glow"
+              },
+              {
+                "domain": "acme-corp.com"
+              }
+            ]
+          },
+          "webhook_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL to receive notifications when the resolved list changes"
+          },
+          "cache_duration_hours": {
+            "type": "integer",
+            "description": "Recommended cache duration for resolved list. Consumers should re-fetch after this period.",
+            "minimum": 1,
+            "default": 24
+          },
+          "created_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the list was created"
+          },
+          "updated_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the list was last modified"
+          },
+          "property_count": {
+            "type": "integer",
+            "description": "Number of properties in the resolved list (at time of last resolution)"
+          },
+          "pricing_options": {
+            "type": "array",
+            "description": "Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.",
+            "items": {
+              "title": "Vendor Pricing Option",
+              "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+              "allOf": [
+                {
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id"
+                  ]
+                },
+                {
+                  "title": "Vendor Pricing",
+                  "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                  "type": "object",
+                  "oneOf": [
+                    {
+                      "title": "CpmPricing",
+                      "description": "Fixed cost per thousand impressions",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "cpm"
+                        },
+                        "cpm": {
+                          "type": "number",
+                          "description": "Cost per thousand impressions",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "cpm",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PercentOfMediaPricing",
+                      "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "percent_of_media"
+                        },
+                        "percent": {
+                          "type": "number",
+                          "description": "Percentage of media spend, e.g. 15 = 15%",
+                          "minimum": 0,
+                          "maximum": 100
+                        },
+                        "max_cpm": {
+                          "type": "number",
+                          "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code for the resulting charge",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "percent",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "FlatFeePricing",
+                      "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "flat_fee"
+                        },
+                        "amount": {
+                          "type": "number",
+                          "description": "Fixed charge for the billing period",
+                          "minimum": 0
+                        },
+                        "period": {
+                          "type": "string",
+                          "enum": [
+                            "monthly",
+                            "quarterly",
+                            "annual",
+                            "campaign"
+                          ],
+                          "description": "Billing period for the flat fee."
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "amount",
+                        "period",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PerUnitPricing",
+                      "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "per_unit"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                        },
+                        "unit_price": {
+                          "type": "number",
+                          "description": "Cost per one unit",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "unit",
+                        "unit_price",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                }
+              ]
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "list_id",
+          "name"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "lists"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.467Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/update-property-list-request.json b/schemas/cache/bundled/property/update-property-list-request.json
new file mode 100644
index 000000000..f41b411a0
--- /dev/null
+++ b/schemas/cache/bundled/property/update-property-list-request.json
@@ -0,0 +1,525 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Property List Request",
+  "description": "Request parameters for updating an existing property list",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list to update"
+    },
+    "name": {
+      "type": "string",
+      "description": "New name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "New description"
+    },
+    "base_properties": {
+      "type": "array",
+      "description": "Complete replacement for the base properties list (not a patch). Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers).",
+      "items": {
+        "title": "Base Property Source",
+        "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
+        "discriminator": {
+          "propertyName": "selection_type"
+        },
+        "oneOf": [
+          {
+            "type": "object",
+            "title": "Publisher Tags Source",
+            "description": "Select properties from a publisher by tag membership",
+            "properties": {
+              "selection_type": {
+                "type": "string",
+                "const": "publisher_tags",
+                "description": "Discriminator indicating selection by property tags within a publisher"
+              },
+              "publisher_domain": {
+                "type": "string",
+                "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "tags": {
+                "type": "array",
+                "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+                "items": {
+                  "title": "Property Tag",
+                  "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "ctv",
+                    "premium",
+                    "news",
+                    "sports",
+                    "meta_network",
+                    "social_media"
+                  ]
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "selection_type",
+              "publisher_domain",
+              "tags"
+            ],
+            "additionalProperties": false
+          },
+          {
+            "type": "object",
+            "title": "Publisher Property IDs Source",
+            "description": "Select specific properties from a publisher by ID",
+            "properties": {
+              "selection_type": {
+                "type": "string",
+                "const": "publisher_ids",
+                "description": "Discriminator indicating selection by specific property IDs within a publisher"
+              },
+              "publisher_domain": {
+                "type": "string",
+                "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "property_ids": {
+                "type": "array",
+                "description": "Specific property IDs from the publisher's adagents.json",
+                "items": {
+                  "title": "Property ID",
+                  "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "cnn_ctv_app",
+                    "homepage",
+                    "mobile_ios",
+                    "instagram"
+                  ]
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "selection_type",
+              "publisher_domain",
+              "property_ids"
+            ],
+            "additionalProperties": false
+          },
+          {
+            "type": "object",
+            "title": "Direct Identifiers Source",
+            "description": "Select properties by direct identifiers (domains, app IDs, etc.) without publisher context",
+            "properties": {
+              "selection_type": {
+                "type": "string",
+                "const": "identifiers",
+                "description": "Discriminator indicating selection by direct identifiers"
+              },
+              "identifiers": {
+                "type": "array",
+                "description": "Direct property identifiers (domains, app IDs, etc.)",
+                "items": {
+                  "title": "Identifier",
+                  "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "title": "Property Identifier Types",
+                      "description": "Type of identifier",
+                      "type": "string",
+                      "enum": [
+                        "domain",
+                        "subdomain",
+                        "network_id",
+                        "ios_bundle",
+                        "android_package",
+                        "apple_app_store_id",
+                        "google_play_id",
+                        "roku_store_id",
+                        "fire_tv_asin",
+                        "samsung_app_id",
+                        "apple_tv_bundle",
+                        "bundle_id",
+                        "venue_id",
+                        "screen_id",
+                        "openooh_venue_type",
+                        "rss_url",
+                        "apple_podcast_id",
+                        "spotify_collection_id",
+                        "podcast_guid",
+                        "station_id",
+                        "facility_id"
+                      ],
+                      "enumDescriptions": {
+                        "domain": "Web domain (e.g., example.com)",
+                        "subdomain": "Specific subdomain (e.g., news.example.com)",
+                        "network_id": "Network or platform-specific identifier",
+                        "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                        "android_package": "Android package name (e.g., com.example.app)",
+                        "apple_app_store_id": "Apple App Store numeric ID",
+                        "google_play_id": "Google Play Store package ID",
+                        "roku_store_id": "Roku Channel Store identifier",
+                        "fire_tv_asin": "Amazon Fire TV ASIN",
+                        "samsung_app_id": "Samsung TV app identifier",
+                        "apple_tv_bundle": "Apple TV app bundle identifier",
+                        "bundle_id": "Generic app bundle identifier",
+                        "venue_id": "DOOH venue identifier",
+                        "screen_id": "DOOH screen identifier within a venue",
+                        "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                        "rss_url": "RSS feed URL for podcast or content feed",
+                        "apple_podcast_id": "Apple Podcasts numeric ID",
+                        "spotify_collection_id": "Spotify show or collection URI",
+                        "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                        "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                        "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                      },
+                      "examples": [
+                        "domain",
+                        "ios_bundle",
+                        "venue_id",
+                        "apple_podcast_id",
+                        "station_id",
+                        "facility_id"
+                      ]
+                    },
+                    "value": {
+                      "type": "string",
+                      "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "value"
+                  ],
+                  "additionalProperties": false
+                },
+                "minItems": 1
+              }
+            },
+            "required": [
+              "selection_type",
+              "identifiers"
+            ],
+            "additionalProperties": false
+          }
+        ]
+      }
+    },
+    "filters": {
+      "title": "Property List Filters",
+      "description": "Complete replacement for the filters (not a patch)",
+      "type": "object",
+      "properties": {
+        "countries_all": {
+          "type": "array",
+          "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          },
+          "minItems": 1
+        },
+        "channels_any": {
+          "type": "array",
+          "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
+          "items": {
+            "title": "Media Channel",
+            "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+            "type": "string",
+            "enum": [
+              "display",
+              "olv",
+              "social",
+              "search",
+              "ctv",
+              "linear_tv",
+              "radio",
+              "streaming_audio",
+              "podcast",
+              "dooh",
+              "ooh",
+              "print",
+              "cinema",
+              "email",
+              "gaming",
+              "retail_media",
+              "influencer",
+              "affiliate",
+              "product_placement",
+              "sponsored_intelligence"
+            ],
+            "enumDescriptions": {
+              "display": "Digital display advertising (banners, native, rich media) across web and app",
+              "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+              "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+              "search": "Search engine advertising and search networks",
+              "ctv": "Connected TV and streaming on television screens",
+              "linear_tv": "Traditional broadcast and cable television",
+              "radio": "Traditional AM/FM radio broadcast",
+              "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+              "podcast": "Podcast advertising (host-read or dynamically inserted)",
+              "dooh": "Digital out-of-home screens in public spaces",
+              "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+              "print": "Newspapers, magazines, and other print publications",
+              "cinema": "Movie theater advertising",
+              "email": "Email advertising and sponsored newsletter content",
+              "gaming": "In-game advertising across platforms",
+              "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+              "influencer": "Creator and influencer marketing partnerships",
+              "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+              "product_placement": "Product placement, branded content, and sponsorship integrations",
+              "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+            }
+          },
+          "minItems": 1
+        },
+        "property_types": {
+          "type": "array",
+          "description": "Filter to these property types",
+          "items": {
+            "title": "Property Type",
+            "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
+            "type": "string",
+            "enum": [
+              "website",
+              "mobile_app",
+              "ctv_app",
+              "desktop_app",
+              "dooh",
+              "podcast",
+              "radio",
+              "linear_tv",
+              "streaming_audio",
+              "ai_assistant"
+            ],
+            "enumDescriptions": {
+              "website": "Web properties accessible via browser, identified by domain",
+              "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
+              "ctv_app": "Connected TV applications, identified by platform-specific store IDs",
+              "desktop_app": "Desktop applications (Electron, native, Chromium wrappers), identified by application bundle IDs",
+              "dooh": "Digital out-of-home screen networks, identified by network/venue IDs",
+              "podcast": "Podcast feeds and episodes, identified by RSS feed URLs or podcast IDs",
+              "radio": "Radio station properties, identified by station ID or facility ID",
+              "linear_tv": "Linear television stations and networks, identified by station ID or facility ID",
+              "streaming_audio": "Digital audio streaming properties, identified by platform-specific IDs",
+              "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs"
+            }
+          },
+          "minItems": 1
+        },
+        "feature_requirements": {
+          "type": "array",
+          "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
+          "items": {
+            "title": "Feature Requirement",
+            "description": "A feature-based requirement \u2014 a reusable predicate over a feature value. Used by property list filters today; designed for reuse in other surfaces (audience filters, creative gates) in future versions. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "Feature to evaluate (discovered via get_adcp_capabilities)"
+              },
+              "min_value": {
+                "type": "number",
+                "description": "Minimum numeric value required (for quantitative features)"
+              },
+              "max_value": {
+                "type": "number",
+                "description": "Maximum numeric value allowed (for quantitative features)"
+              },
+              "allowed_values": {
+                "type": "array",
+                "description": "Values that pass the requirement (for binary/categorical features)",
+                "items": {},
+                "minItems": 1
+              },
+              "if_not_covered": {
+                "type": "string",
+                "enum": [
+                  "exclude",
+                  "include"
+                ],
+                "default": "exclude",
+                "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+              },
+              "policy_id": {
+                "type": "string",
+                "description": "Optional attribution \u2014 when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+              }
+            },
+            "required": [
+              "feature_id"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        },
+        "exclude_identifiers": {
+          "type": "array",
+          "description": "Identifiers to always exclude from results",
+          "items": {
+            "title": "Identifier",
+            "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+            "type": "object",
+            "properties": {
+              "type": {
+                "title": "Property Identifier Types",
+                "description": "Type of identifier",
+                "type": "string",
+                "enum": [
+                  "domain",
+                  "subdomain",
+                  "network_id",
+                  "ios_bundle",
+                  "android_package",
+                  "apple_app_store_id",
+                  "google_play_id",
+                  "roku_store_id",
+                  "fire_tv_asin",
+                  "samsung_app_id",
+                  "apple_tv_bundle",
+                  "bundle_id",
+                  "venue_id",
+                  "screen_id",
+                  "openooh_venue_type",
+                  "rss_url",
+                  "apple_podcast_id",
+                  "spotify_collection_id",
+                  "podcast_guid",
+                  "station_id",
+                  "facility_id"
+                ],
+                "enumDescriptions": {
+                  "domain": "Web domain (e.g., example.com)",
+                  "subdomain": "Specific subdomain (e.g., news.example.com)",
+                  "network_id": "Network or platform-specific identifier",
+                  "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                  "android_package": "Android package name (e.g., com.example.app)",
+                  "apple_app_store_id": "Apple App Store numeric ID",
+                  "google_play_id": "Google Play Store package ID",
+                  "roku_store_id": "Roku Channel Store identifier",
+                  "fire_tv_asin": "Amazon Fire TV ASIN",
+                  "samsung_app_id": "Samsung TV app identifier",
+                  "apple_tv_bundle": "Apple TV app bundle identifier",
+                  "bundle_id": "Generic app bundle identifier",
+                  "venue_id": "DOOH venue identifier",
+                  "screen_id": "DOOH screen identifier within a venue",
+                  "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                  "rss_url": "RSS feed URL for podcast or content feed",
+                  "apple_podcast_id": "Apple Podcasts numeric ID",
+                  "spotify_collection_id": "Spotify show or collection URI",
+                  "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                  "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                  "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                },
+                "examples": [
+                  "domain",
+                  "ios_bundle",
+                  "venue_id",
+                  "apple_podcast_id",
+                  "station_id",
+                  "facility_id"
+                ]
+              },
+              "value": {
+                "type": "string",
+                "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        }
+      },
+      "additionalProperties": false
+    },
+    "brand": {
+      "title": "Brand Reference",
+      "description": "Update brand reference. Resolved to full brand identity at execution time.",
+      "type": "object",
+      "properties": {
+        "domain": {
+          "type": "string",
+          "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
+        "brand_id": {
+          "title": "Brand ID",
+          "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+          "type": "string",
+          "pattern": "^[a-z0-9_]+$",
+          "examples": [
+            "tide",
+            "cheerios",
+            "air_jordan",
+            "nike",
+            "pampers"
+          ]
+        }
+      },
+      "required": [
+        "domain"
+      ],
+      "additionalProperties": false,
+      "examples": [
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "spark"
+        },
+        {
+          "domain": "nova-brands.com",
+          "brand_id": "glow"
+        },
+        {
+          "domain": "acme-corp.com"
+        }
+      ]
+    },
+    "webhook_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Update the webhook URL for list change notifications (set to empty string to remove)"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "list_id"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.468Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/update-property-list-response.json b/schemas/cache/bundled/property/update-property-list-response.json
new file mode 100644
index 000000000..013fdbc57
--- /dev/null
+++ b/schemas/cache/bundled/property/update-property-list-response.json
@@ -0,0 +1,731 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Property List Response",
+  "description": "Response payload for update_property_list task",
+  "type": "object",
+  "properties": {
+    "list": {
+      "title": "Property List",
+      "description": "The updated property list",
+      "type": "object",
+      "properties": {
+        "list_id": {
+          "type": "string",
+          "description": "Unique identifier for this property list"
+        },
+        "name": {
+          "type": "string",
+          "description": "Human-readable name for the list"
+        },
+        "description": {
+          "type": "string",
+          "description": "Description of the list's purpose"
+        },
+        "principal": {
+          "type": "string",
+          "description": "Principal identity that owns this list"
+        },
+        "base_properties": {
+          "type": "array",
+          "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
+          "items": {
+            "title": "Base Property Source",
+            "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
+            "discriminator": {
+              "propertyName": "selection_type"
+            },
+            "oneOf": [
+              {
+                "type": "object",
+                "title": "Publisher Tags Source",
+                "description": "Select properties from a publisher by tag membership",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "publisher_tags",
+                    "description": "Discriminator indicating selection by property tags within a publisher"
+                  },
+                  "publisher_domain": {
+                    "type": "string",
+                    "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "tags": {
+                    "type": "array",
+                    "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+                    "items": {
+                      "title": "Property Tag",
+                      "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "ctv",
+                        "premium",
+                        "news",
+                        "sports",
+                        "meta_network",
+                        "social_media"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "publisher_domain",
+                  "tags"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "title": "Publisher Property IDs Source",
+                "description": "Select specific properties from a publisher by ID",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "publisher_ids",
+                    "description": "Discriminator indicating selection by specific property IDs within a publisher"
+                  },
+                  "publisher_domain": {
+                    "type": "string",
+                    "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "property_ids": {
+                    "type": "array",
+                    "description": "Specific property IDs from the publisher's adagents.json",
+                    "items": {
+                      "title": "Property ID",
+                      "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+                      "type": "string",
+                      "pattern": "^[a-z0-9_]+$",
+                      "examples": [
+                        "cnn_ctv_app",
+                        "homepage",
+                        "mobile_ios",
+                        "instagram"
+                      ]
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "publisher_domain",
+                  "property_ids"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "title": "Direct Identifiers Source",
+                "description": "Select properties by direct identifiers (domains, app IDs, etc.) without publisher context",
+                "properties": {
+                  "selection_type": {
+                    "type": "string",
+                    "const": "identifiers",
+                    "description": "Discriminator indicating selection by direct identifiers"
+                  },
+                  "identifiers": {
+                    "type": "array",
+                    "description": "Direct property identifiers (domains, app IDs, etc.)",
+                    "items": {
+                      "title": "Identifier",
+                      "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                      "type": "object",
+                      "properties": {
+                        "type": {
+                          "title": "Property Identifier Types",
+                          "description": "Type of identifier",
+                          "type": "string",
+                          "enum": [
+                            "domain",
+                            "subdomain",
+                            "network_id",
+                            "ios_bundle",
+                            "android_package",
+                            "apple_app_store_id",
+                            "google_play_id",
+                            "roku_store_id",
+                            "fire_tv_asin",
+                            "samsung_app_id",
+                            "apple_tv_bundle",
+                            "bundle_id",
+                            "venue_id",
+                            "screen_id",
+                            "openooh_venue_type",
+                            "rss_url",
+                            "apple_podcast_id",
+                            "spotify_collection_id",
+                            "podcast_guid",
+                            "station_id",
+                            "facility_id"
+                          ],
+                          "enumDescriptions": {
+                            "domain": "Web domain (e.g., example.com)",
+                            "subdomain": "Specific subdomain (e.g., news.example.com)",
+                            "network_id": "Network or platform-specific identifier",
+                            "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                            "android_package": "Android package name (e.g., com.example.app)",
+                            "apple_app_store_id": "Apple App Store numeric ID",
+                            "google_play_id": "Google Play Store package ID",
+                            "roku_store_id": "Roku Channel Store identifier",
+                            "fire_tv_asin": "Amazon Fire TV ASIN",
+                            "samsung_app_id": "Samsung TV app identifier",
+                            "apple_tv_bundle": "Apple TV app bundle identifier",
+                            "bundle_id": "Generic app bundle identifier",
+                            "venue_id": "DOOH venue identifier",
+                            "screen_id": "DOOH screen identifier within a venue",
+                            "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                            "rss_url": "RSS feed URL for podcast or content feed",
+                            "apple_podcast_id": "Apple Podcasts numeric ID",
+                            "spotify_collection_id": "Spotify show or collection URI",
+                            "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                            "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                            "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                          },
+                          "examples": [
+                            "domain",
+                            "ios_bundle",
+                            "venue_id",
+                            "apple_podcast_id",
+                            "station_id",
+                            "facility_id"
+                          ]
+                        },
+                        "value": {
+                          "type": "string",
+                          "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "value"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "selection_type",
+                  "identifiers"
+                ],
+                "additionalProperties": false
+              }
+            ]
+          }
+        },
+        "filters": {
+          "title": "Property List Filters",
+          "description": "Dynamic filters applied when resolving the list",
+          "type": "object",
+          "properties": {
+            "countries_all": {
+              "type": "array",
+              "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
+              "items": {
+                "type": "string",
+                "pattern": "^[A-Z]{2}$"
+              },
+              "minItems": 1
+            },
+            "channels_any": {
+              "type": "array",
+              "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
+              "items": {
+                "title": "Media Channel",
+                "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                "type": "string",
+                "enum": [
+                  "display",
+                  "olv",
+                  "social",
+                  "search",
+                  "ctv",
+                  "linear_tv",
+                  "radio",
+                  "streaming_audio",
+                  "podcast",
+                  "dooh",
+                  "ooh",
+                  "print",
+                  "cinema",
+                  "email",
+                  "gaming",
+                  "retail_media",
+                  "influencer",
+                  "affiliate",
+                  "product_placement",
+                  "sponsored_intelligence"
+                ],
+                "enumDescriptions": {
+                  "display": "Digital display advertising (banners, native, rich media) across web and app",
+                  "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                  "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                  "search": "Search engine advertising and search networks",
+                  "ctv": "Connected TV and streaming on television screens",
+                  "linear_tv": "Traditional broadcast and cable television",
+                  "radio": "Traditional AM/FM radio broadcast",
+                  "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                  "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                  "dooh": "Digital out-of-home screens in public spaces",
+                  "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                  "print": "Newspapers, magazines, and other print publications",
+                  "cinema": "Movie theater advertising",
+                  "email": "Email advertising and sponsored newsletter content",
+                  "gaming": "In-game advertising across platforms",
+                  "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                  "influencer": "Creator and influencer marketing partnerships",
+                  "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                  "product_placement": "Product placement, branded content, and sponsorship integrations",
+                  "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                }
+              },
+              "minItems": 1
+            },
+            "property_types": {
+              "type": "array",
+              "description": "Filter to these property types",
+              "items": {
+                "title": "Property Type",
+                "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
+                "type": "string",
+                "enum": [
+                  "website",
+                  "mobile_app",
+                  "ctv_app",
+                  "desktop_app",
+                  "dooh",
+                  "podcast",
+                  "radio",
+                  "linear_tv",
+                  "streaming_audio",
+                  "ai_assistant"
+                ],
+                "enumDescriptions": {
+                  "website": "Web properties accessible via browser, identified by domain",
+                  "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
+                  "ctv_app": "Connected TV applications, identified by platform-specific store IDs",
+                  "desktop_app": "Desktop applications (Electron, native, Chromium wrappers), identified by application bundle IDs",
+                  "dooh": "Digital out-of-home screen networks, identified by network/venue IDs",
+                  "podcast": "Podcast feeds and episodes, identified by RSS feed URLs or podcast IDs",
+                  "radio": "Radio station properties, identified by station ID or facility ID",
+                  "linear_tv": "Linear television stations and networks, identified by station ID or facility ID",
+                  "streaming_audio": "Digital audio streaming properties, identified by platform-specific IDs",
+                  "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs"
+                }
+              },
+              "minItems": 1
+            },
+            "feature_requirements": {
+              "type": "array",
+              "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
+              "items": {
+                "title": "Feature Requirement",
+                "description": "A feature-based requirement \u2014 a reusable predicate over a feature value. Used by property list filters today; designed for reuse in other surfaces (audience filters, creative gates) in future versions. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
+                "type": "object",
+                "properties": {
+                  "feature_id": {
+                    "type": "string",
+                    "description": "Feature to evaluate (discovered via get_adcp_capabilities)"
+                  },
+                  "min_value": {
+                    "type": "number",
+                    "description": "Minimum numeric value required (for quantitative features)"
+                  },
+                  "max_value": {
+                    "type": "number",
+                    "description": "Maximum numeric value allowed (for quantitative features)"
+                  },
+                  "allowed_values": {
+                    "type": "array",
+                    "description": "Values that pass the requirement (for binary/categorical features)",
+                    "items": {},
+                    "minItems": 1
+                  },
+                  "if_not_covered": {
+                    "type": "string",
+                    "enum": [
+                      "exclude",
+                      "include"
+                    ],
+                    "default": "exclude",
+                    "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+                  },
+                  "policy_id": {
+                    "type": "string",
+                    "description": "Optional attribution \u2014 when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+                  }
+                },
+                "required": [
+                  "feature_id"
+                ],
+                "additionalProperties": false
+              },
+              "minItems": 1
+            },
+            "exclude_identifiers": {
+              "type": "array",
+              "description": "Identifiers to always exclude from results",
+              "items": {
+                "title": "Identifier",
+                "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "title": "Property Identifier Types",
+                    "description": "Type of identifier",
+                    "type": "string",
+                    "enum": [
+                      "domain",
+                      "subdomain",
+                      "network_id",
+                      "ios_bundle",
+                      "android_package",
+                      "apple_app_store_id",
+                      "google_play_id",
+                      "roku_store_id",
+                      "fire_tv_asin",
+                      "samsung_app_id",
+                      "apple_tv_bundle",
+                      "bundle_id",
+                      "venue_id",
+                      "screen_id",
+                      "openooh_venue_type",
+                      "rss_url",
+                      "apple_podcast_id",
+                      "spotify_collection_id",
+                      "podcast_guid",
+                      "station_id",
+                      "facility_id"
+                    ],
+                    "enumDescriptions": {
+                      "domain": "Web domain (e.g., example.com)",
+                      "subdomain": "Specific subdomain (e.g., news.example.com)",
+                      "network_id": "Network or platform-specific identifier",
+                      "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                      "android_package": "Android package name (e.g., com.example.app)",
+                      "apple_app_store_id": "Apple App Store numeric ID",
+                      "google_play_id": "Google Play Store package ID",
+                      "roku_store_id": "Roku Channel Store identifier",
+                      "fire_tv_asin": "Amazon Fire TV ASIN",
+                      "samsung_app_id": "Samsung TV app identifier",
+                      "apple_tv_bundle": "Apple TV app bundle identifier",
+                      "bundle_id": "Generic app bundle identifier",
+                      "venue_id": "DOOH venue identifier",
+                      "screen_id": "DOOH screen identifier within a venue",
+                      "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                      "rss_url": "RSS feed URL for podcast or content feed",
+                      "apple_podcast_id": "Apple Podcasts numeric ID",
+                      "spotify_collection_id": "Spotify show or collection URI",
+                      "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                      "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                      "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                    },
+                    "examples": [
+                      "domain",
+                      "ios_bundle",
+                      "venue_id",
+                      "apple_podcast_id",
+                      "station_id",
+                      "facility_id"
+                    ]
+                  },
+                  "value": {
+                    "type": "string",
+                    "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+                  }
+                },
+                "required": [
+                  "type",
+                  "value"
+                ],
+                "additionalProperties": false
+              },
+              "minItems": 1
+            }
+          },
+          "additionalProperties": false
+        },
+        "brand": {
+          "title": "Brand Reference",
+          "description": "Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.",
+          "type": "object",
+          "properties": {
+            "domain": {
+              "type": "string",
+              "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "brand_id": {
+              "title": "Brand ID",
+              "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+              "type": "string",
+              "pattern": "^[a-z0-9_]+$",
+              "examples": [
+                "tide",
+                "cheerios",
+                "air_jordan",
+                "nike",
+                "pampers"
+              ]
+            }
+          },
+          "required": [
+            "domain"
+          ],
+          "additionalProperties": false,
+          "examples": [
+            {
+              "domain": "nova-brands.com",
+              "brand_id": "spark"
+            },
+            {
+              "domain": "nova-brands.com",
+              "brand_id": "glow"
+            },
+            {
+              "domain": "acme-corp.com"
+            }
+          ]
+        },
+        "webhook_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to receive notifications when the resolved list changes"
+        },
+        "cache_duration_hours": {
+          "type": "integer",
+          "description": "Recommended cache duration for resolved list. Consumers should re-fetch after this period.",
+          "minimum": 1,
+          "default": 24
+        },
+        "created_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the list was created"
+        },
+        "updated_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When the list was last modified"
+        },
+        "property_count": {
+          "type": "integer",
+          "description": "Number of properties in the resolved list (at time of last resolution)"
+        },
+        "pricing_options": {
+          "type": "array",
+          "description": "Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.",
+          "items": {
+            "title": "Vendor Pricing Option",
+            "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+            "allOf": [
+              {
+                "type": "object",
+                "properties": {
+                  "pricing_option_id": {
+                    "type": "string",
+                    "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                  }
+                },
+                "required": [
+                  "pricing_option_id"
+                ]
+              },
+              {
+                "title": "Vendor Pricing",
+                "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                "type": "object",
+                "oneOf": [
+                  {
+                    "title": "CpmPricing",
+                    "description": "Fixed cost per thousand impressions",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "cpm"
+                      },
+                      "cpm": {
+                        "type": "number",
+                        "description": "Cost per thousand impressions",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "cpm",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "PercentOfMediaPricing",
+                    "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "percent_of_media"
+                      },
+                      "percent": {
+                        "type": "number",
+                        "description": "Percentage of media spend, e.g. 15 = 15%",
+                        "minimum": 0,
+                        "maximum": 100
+                      },
+                      "max_cpm": {
+                        "type": "number",
+                        "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code for the resulting charge",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "percent",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "FlatFeePricing",
+                    "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "flat_fee"
+                      },
+                      "amount": {
+                        "type": "number",
+                        "description": "Fixed charge for the billing period",
+                        "minimum": 0
+                      },
+                      "period": {
+                        "type": "string",
+                        "enum": [
+                          "monthly",
+                          "quarterly",
+                          "annual",
+                          "campaign"
+                        ],
+                        "description": "Billing period for the flat fee."
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "amount",
+                      "period",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  },
+                  {
+                    "title": "PerUnitPricing",
+                    "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                    "type": "object",
+                    "properties": {
+                      "model": {
+                        "type": "string",
+                        "const": "per_unit"
+                      },
+                      "unit": {
+                        "type": "string",
+                        "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                      },
+                      "unit_price": {
+                        "type": "number",
+                        "description": "Cost per one unit",
+                        "minimum": 0
+                      },
+                      "currency": {
+                        "type": "string",
+                        "description": "ISO 4217 currency code",
+                        "pattern": "^[A-Z]{3}$"
+                      },
+                      "ext": {
+                        "title": "Extension Object",
+                        "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                        "type": "object",
+                        "additionalProperties": true
+                      }
+                    },
+                    "required": [
+                      "model",
+                      "unit",
+                      "unit_price",
+                      "currency"
+                    ],
+                    "additionalProperties": true
+                  }
+                ]
+              }
+            ]
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "list_id",
+        "name"
+      ],
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "list"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.470Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/validate-property-delivery-request.json b/schemas/cache/bundled/property/validate-property-delivery-request.json
new file mode 100644
index 000000000..27b7931b9
--- /dev/null
+++ b/schemas/cache/bundled/property/validate-property-delivery-request.json
@@ -0,0 +1,157 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Property Delivery Request",
+  "description": "Request payload for validate_property_delivery task. Validates delivery records against a property list to determine compliance.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list to validate against"
+    },
+    "records": {
+      "type": "array",
+      "description": "Delivery records to validate. Each record represents impressions delivered to a property identifier.",
+      "items": {
+        "title": "Delivery Record",
+        "description": "A single delivery record representing impressions served to a property identifier. Used as input to validate_property_delivery.",
+        "type": "object",
+        "properties": {
+          "identifier": {
+            "title": "Identifier",
+            "description": "The property identifier where impressions were delivered",
+            "type": "object",
+            "properties": {
+              "type": {
+                "title": "Property Identifier Types",
+                "description": "Type of identifier",
+                "type": "string",
+                "enum": [
+                  "domain",
+                  "subdomain",
+                  "network_id",
+                  "ios_bundle",
+                  "android_package",
+                  "apple_app_store_id",
+                  "google_play_id",
+                  "roku_store_id",
+                  "fire_tv_asin",
+                  "samsung_app_id",
+                  "apple_tv_bundle",
+                  "bundle_id",
+                  "venue_id",
+                  "screen_id",
+                  "openooh_venue_type",
+                  "rss_url",
+                  "apple_podcast_id",
+                  "spotify_collection_id",
+                  "podcast_guid",
+                  "station_id",
+                  "facility_id"
+                ],
+                "enumDescriptions": {
+                  "domain": "Web domain (e.g., example.com)",
+                  "subdomain": "Specific subdomain (e.g., news.example.com)",
+                  "network_id": "Network or platform-specific identifier",
+                  "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                  "android_package": "Android package name (e.g., com.example.app)",
+                  "apple_app_store_id": "Apple App Store numeric ID",
+                  "google_play_id": "Google Play Store package ID",
+                  "roku_store_id": "Roku Channel Store identifier",
+                  "fire_tv_asin": "Amazon Fire TV ASIN",
+                  "samsung_app_id": "Samsung TV app identifier",
+                  "apple_tv_bundle": "Apple TV app bundle identifier",
+                  "bundle_id": "Generic app bundle identifier",
+                  "venue_id": "DOOH venue identifier",
+                  "screen_id": "DOOH screen identifier within a venue",
+                  "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                  "rss_url": "RSS feed URL for podcast or content feed",
+                  "apple_podcast_id": "Apple Podcasts numeric ID",
+                  "spotify_collection_id": "Spotify show or collection URI",
+                  "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                  "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                  "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                },
+                "examples": [
+                  "domain",
+                  "ios_bundle",
+                  "venue_id",
+                  "apple_podcast_id",
+                  "station_id",
+                  "facility_id"
+                ]
+              },
+              "value": {
+                "type": "string",
+                "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": false
+          },
+          "impressions": {
+            "type": "integer",
+            "minimum": 0,
+            "description": "Number of impressions delivered to this identifier"
+          },
+          "record_id": {
+            "type": "string",
+            "description": "Optional client-provided ID for correlating results back to source data"
+          },
+          "sales_agent_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL of the sales agent that sold this inventory. If provided, authorization is validated against the property's adagents.json."
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "identifier",
+          "impressions"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1,
+      "maxItems": 10000
+    },
+    "include_compliant": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include compliant records in results (default: only return non_compliant, unmodeled, and unidentified)"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "list_id",
+    "records"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.471Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/property/validate-property-delivery-response.json b/schemas/cache/bundled/property/validate-property-delivery-response.json
new file mode 100644
index 000000000..f80885b0c
--- /dev/null
+++ b/schemas/cache/bundled/property/validate-property-delivery-response.json
@@ -0,0 +1,403 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Property Delivery Response",
+  "description": "Response payload for validate_property_delivery task. Returns aggregate compliance statistics and per-record validation results.",
+  "type": "object",
+  "properties": {
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list validated against"
+    },
+    "summary": {
+      "type": "object",
+      "description": "Aggregate validation statistics",
+      "properties": {
+        "total_records": {
+          "type": "integer",
+          "description": "Total number of records validated"
+        },
+        "total_impressions": {
+          "type": "integer",
+          "description": "Total impressions across all records"
+        },
+        "compliant_records": {
+          "type": "integer",
+          "description": "Number of records with compliant status"
+        },
+        "compliant_impressions": {
+          "type": "integer",
+          "description": "Impressions from compliant records"
+        },
+        "non_compliant_records": {
+          "type": "integer",
+          "description": "Number of records with non_compliant status"
+        },
+        "non_compliant_impressions": {
+          "type": "integer",
+          "description": "Impressions from non_compliant records"
+        },
+        "not_covered_records": {
+          "type": "integer",
+          "description": "Number of records where identifier was recognized but no data available"
+        },
+        "not_covered_impressions": {
+          "type": "integer",
+          "description": "Impressions from not_covered records"
+        },
+        "unidentified_records": {
+          "type": "integer",
+          "description": "Number of records where identifier type was not resolvable"
+        },
+        "unidentified_impressions": {
+          "type": "integer",
+          "description": "Impressions from unidentified records"
+        }
+      },
+      "required": [
+        "total_records",
+        "total_impressions",
+        "compliant_records",
+        "compliant_impressions",
+        "non_compliant_records",
+        "non_compliant_impressions",
+        "not_covered_records",
+        "not_covered_impressions",
+        "unidentified_records",
+        "unidentified_impressions"
+      ],
+      "additionalProperties": false
+    },
+    "aggregate": {
+      "type": "object",
+      "description": "Optional aggregate measurements computed by the governance agent. Format and meaning are agent-specific.",
+      "properties": {
+        "score": {
+          "type": "number",
+          "description": "Numeric score (0-100 scale typical, but agent-defined)"
+        },
+        "grade": {
+          "type": "string",
+          "description": "Letter grade or category (e.g., 'A+', 'B-', 'Gold', 'Compliant')"
+        },
+        "label": {
+          "type": "string",
+          "description": "Human-readable summary (e.g., '85% compliant', 'High quality')"
+        },
+        "methodology_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL explaining how this aggregate was calculated"
+        }
+      },
+      "additionalProperties": true
+    },
+    "authorization_summary": {
+      "type": "object",
+      "description": "Aggregate authorization statistics. Only present if any records included sales_agent_url.",
+      "properties": {
+        "records_checked": {
+          "type": "integer",
+          "description": "Number of records with sales_agent_url provided"
+        },
+        "impressions_checked": {
+          "type": "integer",
+          "description": "Total impressions from records with sales_agent_url"
+        },
+        "authorized_records": {
+          "type": "integer",
+          "description": "Number of records where sales agent was authorized"
+        },
+        "authorized_impressions": {
+          "type": "integer",
+          "description": "Impressions from authorized records"
+        },
+        "unauthorized_records": {
+          "type": "integer",
+          "description": "Number of records where sales agent was NOT authorized"
+        },
+        "unauthorized_impressions": {
+          "type": "integer",
+          "description": "Impressions from unauthorized records"
+        },
+        "unknown_records": {
+          "type": "integer",
+          "description": "Number of records where authorization could not be determined (adagents.json unavailable)"
+        },
+        "unknown_impressions": {
+          "type": "integer",
+          "description": "Impressions from records where authorization could not be determined"
+        }
+      },
+      "required": [
+        "records_checked",
+        "impressions_checked",
+        "authorized_records",
+        "authorized_impressions",
+        "unauthorized_records",
+        "unauthorized_impressions",
+        "unknown_records",
+        "unknown_impressions"
+      ],
+      "additionalProperties": false
+    },
+    "results": {
+      "type": "array",
+      "description": "Per-record validation results. By default only includes non_compliant and unknown records. Set include_compliant=true to include all records.",
+      "items": {
+        "title": "Validation Result",
+        "description": "Result of validating a single delivery record against a property list.",
+        "type": "object",
+        "properties": {
+          "identifier": {
+            "title": "Identifier",
+            "description": "The identifier that was validated",
+            "type": "object",
+            "properties": {
+              "type": {
+                "title": "Property Identifier Types",
+                "description": "Type of identifier",
+                "type": "string",
+                "enum": [
+                  "domain",
+                  "subdomain",
+                  "network_id",
+                  "ios_bundle",
+                  "android_package",
+                  "apple_app_store_id",
+                  "google_play_id",
+                  "roku_store_id",
+                  "fire_tv_asin",
+                  "samsung_app_id",
+                  "apple_tv_bundle",
+                  "bundle_id",
+                  "venue_id",
+                  "screen_id",
+                  "openooh_venue_type",
+                  "rss_url",
+                  "apple_podcast_id",
+                  "spotify_collection_id",
+                  "podcast_guid",
+                  "station_id",
+                  "facility_id"
+                ],
+                "enumDescriptions": {
+                  "domain": "Web domain (e.g., example.com)",
+                  "subdomain": "Specific subdomain (e.g., news.example.com)",
+                  "network_id": "Network or platform-specific identifier",
+                  "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+                  "android_package": "Android package name (e.g., com.example.app)",
+                  "apple_app_store_id": "Apple App Store numeric ID",
+                  "google_play_id": "Google Play Store package ID",
+                  "roku_store_id": "Roku Channel Store identifier",
+                  "fire_tv_asin": "Amazon Fire TV ASIN",
+                  "samsung_app_id": "Samsung TV app identifier",
+                  "apple_tv_bundle": "Apple TV app bundle identifier",
+                  "bundle_id": "Generic app bundle identifier",
+                  "venue_id": "DOOH venue identifier",
+                  "screen_id": "DOOH screen identifier within a venue",
+                  "openooh_venue_type": "OpenOOH venue taxonomy classification",
+                  "rss_url": "RSS feed URL for podcast or content feed",
+                  "apple_podcast_id": "Apple Podcasts numeric ID",
+                  "spotify_collection_id": "Spotify show or collection URI",
+                  "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+                  "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+                  "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+                },
+                "examples": [
+                  "domain",
+                  "ios_bundle",
+                  "venue_id",
+                  "apple_podcast_id",
+                  "station_id",
+                  "facility_id"
+                ]
+              },
+              "value": {
+                "type": "string",
+                "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": false
+          },
+          "record_id": {
+            "type": "string",
+            "description": "Client-provided ID from the delivery record (if provided)"
+          },
+          "status": {
+            "type": "string",
+            "enum": [
+              "compliant",
+              "non_compliant",
+              "not_covered",
+              "unidentified"
+            ],
+            "description": "Validation status: compliant (in list), non_compliant (not in list), not_covered (identifier recognized but no data available), unidentified (identifier type not resolvable by this governance agent)"
+          },
+          "impressions": {
+            "type": "integer",
+            "minimum": 0,
+            "description": "Number of impressions from this record"
+          },
+          "features": {
+            "type": "array",
+            "description": "Per-feature breakdown for this record. SHOULD include all failed and warning features. MAY include passed features. For property validation the buyer authored the requirement, so the `requirement` that was not met MAY be echoed back on failures \u2014 this is contract data, not evaluator IP.",
+            "items": {
+              "type": "object",
+              "properties": {
+                "feature_id": {
+                  "type": "string",
+                  "description": "Which feature was evaluated. Data features come from the governance agent's feature catalog (e.g., 'mfa_score', 'carbon_score'). Record-level structural checks use reserved namespaces: 'record:list_membership', 'record:excluded', 'delivery:seller_authorization', 'delivery:click_url_presence'. Reserved prefixes: 'record:', 'delivery:'."
+                },
+                "status": {
+                  "type": "string",
+                  "enum": [
+                    "passed",
+                    "failed",
+                    "warning",
+                    "unevaluated"
+                  ]
+                },
+                "policy_id": {
+                  "type": "string",
+                  "description": "Registry policy ID that triggered this result. Enables programmatic routing by looking up the policy in the registry."
+                },
+                "explanation": {
+                  "type": "string",
+                  "description": "Directional human-readable explanation of the result."
+                },
+                "requirement": {
+                  "type": "object",
+                  "description": "The feature requirement that was not met. MAY be present on failed features when the caller authored the requirement (e.g., feature_requirements on a property list). The buyer set these thresholds \u2014 echoing them back enables fix-and-retry loops without looking up the list definition.",
+                  "properties": {
+                    "min_value": {
+                      "type": "number",
+                      "description": "Minimum value that was required"
+                    },
+                    "max_value": {
+                      "type": "number",
+                      "description": "Maximum value that was allowed"
+                    },
+                    "allowed_values": {
+                      "type": "array",
+                      "description": "Values that would have been acceptable",
+                      "items": {}
+                    }
+                  },
+                  "additionalProperties": false
+                },
+                "confidence": {
+                  "type": "number",
+                  "minimum": 0,
+                  "maximum": 1,
+                  "description": "Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones."
+                }
+              },
+              "required": [
+                "feature_id",
+                "status"
+              ],
+              "additionalProperties": false
+            }
+          },
+          "authorization": {
+            "title": "Authorization Result",
+            "description": "Authorization validation result (only present if sales_agent_url was provided in the delivery record)",
+            "type": "object",
+            "properties": {
+              "status": {
+                "type": "string",
+                "enum": [
+                  "authorized",
+                  "unauthorized",
+                  "unknown"
+                ],
+                "description": "Authorization status: authorized (agent in adagents.json), unauthorized (agent not in adagents.json), unknown (could not fetch or parse adagents.json)"
+              },
+              "publisher_domain": {
+                "type": "string",
+                "description": "The publisher domain where adagents.json was checked"
+              },
+              "sales_agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "The sales agent URL that was validated"
+              },
+              "violation": {
+                "type": "object",
+                "description": "Details about the authorization failure (only present for unauthorized status)",
+                "properties": {
+                  "code": {
+                    "type": "string",
+                    "description": "Machine-readable violation code"
+                  },
+                  "message": {
+                    "type": "string",
+                    "description": "Human-readable violation description"
+                  }
+                },
+                "required": [
+                  "code",
+                  "message"
+                ],
+                "additionalProperties": false
+              }
+            },
+            "required": [
+              "status"
+            ],
+            "additionalProperties": false
+          },
+          "ext": {
+            "title": "Extension Object",
+            "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+            "type": "object",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "identifier",
+          "status",
+          "impressions"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "validated_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Timestamp when validation was performed"
+    },
+    "list_resolved_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Timestamp of the property list resolution used for validation"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "list_id",
+    "summary",
+    "results",
+    "validated_at"
+  ],
+  "additionalProperties": false,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.472Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/protocol/get-adcp-capabilities-request.json b/schemas/cache/bundled/protocol/get-adcp-capabilities-request.json
new file mode 100644
index 000000000..776ef150f
--- /dev/null
+++ b/schemas/cache/bundled/protocol/get-adcp-capabilities-request.json
@@ -0,0 +1,46 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get AdCP Capabilities Request",
+  "description": "Request payload for get_adcp_capabilities task. Protocol-level capability discovery that works across all AdCP protocols.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. When provided, the seller validates this against its supported major_versions and returns VERSION_UNSUPPORTED if the version is not in range. When omitted, the seller assumes the highest major version it supports.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "protocols": {
+      "type": "array",
+      "description": "Specific protocols to query capabilities for. If omitted, returns capabilities for all supported protocols.",
+      "items": {
+        "type": "string",
+        "enum": [
+          "media_buy",
+          "signals",
+          "governance",
+          "sponsored_intelligence",
+          "creative"
+        ]
+      },
+      "minItems": 1
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.473Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/protocol/get-adcp-capabilities-response.json b/schemas/cache/bundled/protocol/get-adcp-capabilities-response.json
new file mode 100644
index 000000000..3bbfb996d
--- /dev/null
+++ b/schemas/cache/bundled/protocol/get-adcp-capabilities-response.json
@@ -0,0 +1,1684 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get AdCP Capabilities Response",
+  "description": "Response payload for get_adcp_capabilities task. Protocol-level capability discovery across all AdCP protocols. Each protocol has its own capability section.",
+  "type": "object",
+  "properties": {
+    "adcp": {
+      "type": "object",
+      "description": "Core AdCP protocol information",
+      "properties": {
+        "major_versions": {
+          "type": "array",
+          "description": "AdCP major versions supported by this seller. Major versions indicate breaking changes. When multiple versions are listed, the buyer declares its version via the adcp_major_version field on requests.",
+          "items": {
+            "type": "integer",
+            "minimum": 1
+          },
+          "minItems": 1
+        },
+        "idempotency": {
+          "type": "object",
+          "description": "Idempotency semantics for mutating requests. Sellers MUST declare their replay window so buyers can reason about safe retry behavior. Clients MUST NOT assume a default \u2014 a seller without this declaration is non-compliant and should be treated as unsafe for retry-sensitive operations.",
+          "properties": {
+            "replay_ttl_seconds": {
+              "type": "integer",
+              "description": "How long the seller retains a canonical response for an idempotency_key. Within this window, a replay with the same key + equivalent canonical payload returns the cached response; a replay with a different canonical payload returns IDEMPOTENCY_CONFLICT; a replay past the window returns IDEMPOTENCY_EXPIRED when the seller can still distinguish 'seen and evicted' from 'never seen'. Minimum 3600 (1h); recommended 86400 (24h). Maximum 604800 (7 days) \u2014 longer windows force buyers to retain secret keys at rest for extended periods and grow the seller's cache table without bounded benefit.",
+              "minimum": 3600,
+              "maximum": 604800
+            }
+          },
+          "required": [
+            "replay_ttl_seconds"
+          ]
+        }
+      },
+      "required": [
+        "major_versions",
+        "idempotency"
+      ]
+    },
+    "supported_protocols": {
+      "type": "array",
+      "description": "AdCP protocols this agent supports. Each value both (a) declares which tools the agent implements and (b) commits the agent to pass the baseline compliance storyboard at /compliance/{version}/protocols/{protocol}/ (with snake_case \u2192 kebab-case path mapping, e.g. media_buy \u2192 /compliance/.../protocols/media-buy/). Compliance testing support is declared separately via the `compliance_testing` capability block (below), not as a protocol claim.",
+      "items": {
+        "type": "string",
+        "enum": [
+          "media_buy",
+          "signals",
+          "governance",
+          "sponsored_intelligence",
+          "creative",
+          "brand"
+        ]
+      },
+      "minItems": 1
+    },
+    "account": {
+      "type": "object",
+      "description": "Account management capabilities. Describes how accounts are established, what billing models are supported, and whether an account is required before browsing products.",
+      "properties": {
+        "require_operator_auth": {
+          "type": "boolean",
+          "description": "Whether the seller requires operator-level credentials. When true (explicit accounts), operators authenticate independently with the seller and the buyer discovers accounts via list_accounts. When false (default, implicit accounts), the seller trusts the agent's identity claims \u2014 the agent authenticates once and declares brands/operators via sync_accounts.",
+          "default": false
+        },
+        "authorization_endpoint": {
+          "type": "string",
+          "format": "uri",
+          "description": "OAuth authorization endpoint for obtaining operator-level credentials. Present when the seller supports OAuth for operator authentication. The agent directs the operator to this URL to authenticate and obtain a bearer token. If absent and require_operator_auth is true, operators obtain credentials out-of-band (e.g., seller portal, API key)."
+        },
+        "supported_billing": {
+          "type": "array",
+          "description": "Billing models this seller supports. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The buyer must pass one of these values in sync_accounts.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "operator",
+              "agent",
+              "advertiser"
+            ]
+          },
+          "minItems": 1
+        },
+        "required_for_products": {
+          "type": "boolean",
+          "description": "Whether an account reference is required for get_products. When true, the buyer must establish an account before browsing products. When false (default), the buyer can browse products without an account \u2014 useful for price comparison and discovery before committing to a seller.",
+          "default": false
+        },
+        "account_financials": {
+          "type": "boolean",
+          "description": "Whether this seller supports the get_account_financials task for querying account-level financial status (spend, credit, invoices). Only applicable to operator-billed accounts.",
+          "default": false
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "Whether this seller supports sandbox accounts for testing. Buyers can provision a sandbox account via sync_accounts with sandbox: true, and all requests using that account_id will be treated as sandbox \u2014 no real platform calls or spend.",
+          "default": false
+        }
+      },
+      "required": [
+        "supported_billing"
+      ]
+    },
+    "media_buy": {
+      "type": "object",
+      "description": "Media-buy protocol capabilities. Expected when media_buy is in supported_protocols. Sellers declaring media_buy should also include account with supported_billing.",
+      "properties": {
+        "supported_pricing_models": {
+          "type": "array",
+          "description": "Pricing models this seller supports across its product portfolio. Buyers can use this for pre-flight filtering before querying individual products. Individual products may support a subset of these models.",
+          "items": {
+            "title": "Pricing Model",
+            "description": "Supported pricing models for advertising products",
+            "type": "string",
+            "enum": [
+              "cpm",
+              "vcpm",
+              "cpc",
+              "cpcv",
+              "cpv",
+              "cpp",
+              "cpa",
+              "flat_rate",
+              "time"
+            ],
+            "enumDescriptions": {
+              "cpm": "Cost Per Mille - cost per 1,000 impressions",
+              "vcpm": "Viewable Cost Per Mille - cost per 1,000 viewable impressions (MRC standard)",
+              "cpc": "Cost Per Click - cost per click on the ad",
+              "cpcv": "Cost Per Completed View - cost per 100% video/audio completion",
+              "cpv": "Cost Per View - cost per view at publisher-defined threshold (e.g., 50% completion)",
+              "cpp": "Cost Per Point - cost per Gross Rating Point or Target Rating Point (TV/audio)",
+              "cpa": "Cost Per Acquisition - cost per conversion event (purchase, lead, signup, etc.)",
+              "flat_rate": "Flat Rate - fixed cost regardless of delivery volume (sponsorships, takeovers)",
+              "time": "Time - cost per time unit (hour, day, week, or month) that scales with campaign duration"
+            }
+          },
+          "minItems": 1,
+          "uniqueItems": true
+        },
+        "reporting_delivery_methods": {
+          "type": "array",
+          "description": "How this seller delivers reporting data to buyers. Polling via get_media_buy_delivery is always available as a baseline regardless of this field. This array declares additional push-based delivery methods the seller supports. 'webhook': seller pushes to buyer-provided URL (configured per buy via reporting_webhook). 'offline': seller pushes batch files to a cloud storage bucket (seller-provisioned per account via reporting_bucket on the account object). When absent, only polling is available.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "webhook",
+              "offline"
+            ]
+          },
+          "minItems": 1,
+          "uniqueItems": true
+        },
+        "offline_delivery_protocols": {
+          "type": "array",
+          "description": "Cloud storage protocols this seller supports for offline file delivery. Only meaningful when reporting_delivery_methods includes 'offline'. Buyers express a protocol preference in sync_accounts; the seller provisions the account's reporting_bucket using a supported protocol.",
+          "items": {
+            "title": "Cloud Storage Protocol",
+            "description": "Cloud storage protocols supported for offline file delivery",
+            "type": "string",
+            "enum": [
+              "s3",
+              "gcs",
+              "azure_blob"
+            ]
+          },
+          "minItems": 1,
+          "uniqueItems": true
+        },
+        "features": {
+          "title": "Media Buy Features",
+          "description": "Optional media-buy protocol features. Used in capability declarations (seller declares support) and product filters (buyer requires support). If a seller declares a feature as true, they MUST honor requests using that feature.",
+          "type": "object",
+          "properties": {
+            "inline_creative_management": {
+              "type": "boolean",
+              "description": "Supports creatives provided inline in create_media_buy requests"
+            },
+            "property_list_filtering": {
+              "type": "boolean",
+              "description": "Honors property_list parameter in get_products to filter results to buyer-approved properties"
+            },
+            "catalog_management": {
+              "type": "boolean",
+              "description": "Supports sync_catalogs task for catalog feed management with platform review and approval"
+            }
+          },
+          "additionalProperties": {
+            "type": "boolean"
+          }
+        },
+        "execution": {
+          "type": "object",
+          "description": "Technical execution capabilities for media buying",
+          "properties": {
+            "trusted_match": {
+              "type": "object",
+              "description": "Trusted Match Protocol (TMP) support. Presence of this object indicates the seller has TMP infrastructure deployed. Check individual products via get_products for per-product TMP capabilities.",
+              "properties": {
+                "surfaces": {
+                  "type": "array",
+                  "description": "Surface types this seller supports via TMP.",
+                  "items": {
+                    "type": "string",
+                    "enum": [
+                      "website",
+                      "mobile_app",
+                      "ctv_app",
+                      "desktop_app",
+                      "dooh",
+                      "podcast",
+                      "radio",
+                      "streaming_audio",
+                      "ai_assistant"
+                    ]
+                  }
+                }
+              }
+            },
+            "axe_integrations": {
+              "type": "array",
+              "description": "Deprecated. Legacy AXE integrations. Use trusted_match for new integrations.",
+              "items": {
+                "type": "string",
+                "format": "uri"
+              }
+            },
+            "creative_specs": {
+              "type": "object",
+              "description": "Creative specification support",
+              "properties": {
+                "vast_versions": {
+                  "type": "array",
+                  "description": "VAST versions supported for video creatives",
+                  "items": {
+                    "type": "string",
+                    "pattern": "^[0-9]+\\.[0-9]+$"
+                  }
+                },
+                "mraid_versions": {
+                  "type": "array",
+                  "description": "MRAID versions supported for rich media mobile creatives",
+                  "items": {
+                    "type": "string",
+                    "pattern": "^[0-9]+\\.[0-9]+$"
+                  }
+                },
+                "vpaid": {
+                  "type": "boolean",
+                  "description": "VPAID support for interactive video ads"
+                },
+                "simid": {
+                  "type": "boolean",
+                  "description": "SIMID support for interactive video ads"
+                }
+              }
+            },
+            "targeting": {
+              "type": "object",
+              "description": "Targeting capabilities. If declared true/supported, buyer can use these targeting parameters and seller MUST honor them.",
+              "properties": {
+                "geo_countries": {
+                  "type": "boolean",
+                  "description": "Country-level targeting using ISO 3166-1 alpha-2 codes"
+                },
+                "geo_regions": {
+                  "type": "boolean",
+                  "description": "Region/state-level targeting using ISO 3166-2 codes (e.g., US-NY, GB-SCT)"
+                },
+                "geo_metros": {
+                  "type": "object",
+                  "description": "Metro area targeting. Properties indicate which classification systems are supported.",
+                  "properties": {
+                    "nielsen_dma": {
+                      "type": "boolean"
+                    },
+                    "uk_itl1": {
+                      "type": "boolean"
+                    },
+                    "uk_itl2": {
+                      "type": "boolean"
+                    },
+                    "eurostat_nuts2": {
+                      "type": "boolean"
+                    }
+                  },
+                  "additionalProperties": false
+                },
+                "geo_postal_areas": {
+                  "type": "object",
+                  "description": "Postal area targeting. Properties indicate which postal code systems are supported.",
+                  "properties": {
+                    "us_zip": {
+                      "type": "boolean"
+                    },
+                    "us_zip_plus_four": {
+                      "type": "boolean"
+                    },
+                    "gb_outward": {
+                      "type": "boolean"
+                    },
+                    "gb_full": {
+                      "type": "boolean"
+                    },
+                    "ca_fsa": {
+                      "type": "boolean"
+                    },
+                    "ca_full": {
+                      "type": "boolean"
+                    },
+                    "de_plz": {
+                      "type": "boolean"
+                    },
+                    "fr_code_postal": {
+                      "type": "boolean"
+                    },
+                    "au_postcode": {
+                      "type": "boolean"
+                    },
+                    "ch_plz": {
+                      "type": "boolean"
+                    },
+                    "at_plz": {
+                      "type": "boolean"
+                    }
+                  },
+                  "additionalProperties": false
+                },
+                "age_restriction": {
+                  "type": "object",
+                  "description": "Age restriction capabilities for compliance (alcohol, gambling)",
+                  "properties": {
+                    "supported": {
+                      "type": "boolean",
+                      "description": "Whether seller supports age restrictions"
+                    },
+                    "verification_methods": {
+                      "type": "array",
+                      "description": "Age verification methods this seller supports",
+                      "items": {
+                        "title": "Age Verification Method",
+                        "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+                        "type": "string",
+                        "enum": [
+                          "facial_age_estimation",
+                          "id_document",
+                          "digital_id",
+                          "credit_card",
+                          "world_id"
+                        ]
+                      }
+                    }
+                  }
+                },
+                "language": {
+                  "type": "boolean",
+                  "description": "Whether seller supports language targeting (ISO 639-1 codes)"
+                },
+                "keyword_targets": {
+                  "type": "object",
+                  "description": "Keyword targeting capabilities. Presence indicates support for targeting_overlay.keyword_targets and keyword_targets_add/remove in update_media_buy.",
+                  "properties": {
+                    "supported_match_types": {
+                      "type": "array",
+                      "description": "Match types this seller supports for keyword targets. Sellers must reject goals with unsupported match types.",
+                      "items": {
+                        "type": "string",
+                        "enum": [
+                          "broad",
+                          "phrase",
+                          "exact"
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "supported_match_types"
+                  ]
+                },
+                "negative_keywords": {
+                  "type": "object",
+                  "description": "Negative keyword capabilities. Presence indicates support for targeting_overlay.negative_keywords and negative_keywords_add/remove in update_media_buy.",
+                  "properties": {
+                    "supported_match_types": {
+                      "type": "array",
+                      "description": "Match types this seller supports for negative keywords. Sellers must reject goals with unsupported match types.",
+                      "items": {
+                        "type": "string",
+                        "enum": [
+                          "broad",
+                          "phrase",
+                          "exact"
+                        ]
+                      },
+                      "minItems": 1
+                    }
+                  },
+                  "required": [
+                    "supported_match_types"
+                  ]
+                },
+                "geo_proximity": {
+                  "type": "object",
+                  "description": "Proximity targeting capabilities from arbitrary coordinates via targeting_overlay.geo_proximity.",
+                  "properties": {
+                    "radius": {
+                      "type": "boolean",
+                      "description": "Whether seller supports simple radius targeting (distance circle from a point)"
+                    },
+                    "travel_time": {
+                      "type": "boolean",
+                      "description": "Whether seller supports travel time isochrone targeting (requires a routing engine)"
+                    },
+                    "geometry": {
+                      "type": "boolean",
+                      "description": "Whether seller supports pre-computed GeoJSON geometry (buyer provides the polygon)"
+                    },
+                    "transport_modes": {
+                      "type": "array",
+                      "description": "Transport modes supported for travel_time isochrones. Only relevant when travel_time is true.",
+                      "items": {
+                        "title": "Transport Mode",
+                        "description": "Transportation modes for isochrone-based catchment area calculations. Determines how travel time translates to geographic reach.",
+                        "type": "string",
+                        "enum": [
+                          "walking",
+                          "cycling",
+                          "driving",
+                          "public_transport"
+                        ],
+                        "enumDescriptions": {
+                          "walking": "Pedestrian travel on walkable paths and sidewalks",
+                          "cycling": "Bicycle travel on roads and cycle paths",
+                          "driving": "Motor vehicle travel on road networks",
+                          "public_transport": "Public transit including bus, rail, metro, and ferry"
+                        }
+                      },
+                      "minItems": 1
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        "audience_targeting": {
+          "type": "object",
+          "description": "Audience targeting capabilities. Presence of this object indicates the seller supports audience targeting, including sync_audiences and audience_include/audience_exclude in targeting overlays.",
+          "properties": {
+            "supported_identifier_types": {
+              "type": "array",
+              "description": "PII-derived identifier types accepted for audience matching. Buyers should only send identifiers the seller supports.",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "hashed_email",
+                  "hashed_phone"
+                ]
+              },
+              "minItems": 1
+            },
+            "supports_platform_customer_id": {
+              "type": "boolean",
+              "description": "Whether the seller accepts the buyer's CRM/loyalty ID as a matchable identifier. Only applicable when the seller operates a closed ecosystem with a shared ID namespace (e.g., a retailer matching against their loyalty program). When true, buyers can include platform_customer_id values in AudienceMember.identifiers for matching against the seller's identity graph. Reporting on matched platform_customer_ids typically requires a clean room or the seller's own reporting surface."
+            },
+            "supported_uid_types": {
+              "type": "array",
+              "description": "Universal ID types accepted for audience matching (MAIDs, RampID, UID2, etc.). MAID support varies significantly by platform \u2014 check this field before sending uids with type: maid.",
+              "items": {
+                "title": "UID Type",
+                "description": "Type of user identifier. Used in audience sync, event logging, and TMP identity match requests to tell the receiver which identity graph to resolve against.",
+                "type": "string",
+                "enum": [
+                  "rampid",
+                  "rampid_derived",
+                  "id5",
+                  "uid2",
+                  "euid",
+                  "pairid",
+                  "maid",
+                  "hashed_email",
+                  "publisher_first_party",
+                  "other"
+                ],
+                "enumDescriptions": {
+                  "rampid": "LiveRamp RampID maintained form (XY, 32 bytes on the wire)",
+                  "rampid_derived": "LiveRamp RampID derived form (Xi, 48 bytes on the wire)",
+                  "id5": "ID5 universal ID",
+                  "uid2": "Unified ID 2.0",
+                  "euid": "European Unified ID",
+                  "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+                  "maid": "Mobile Advertising ID (IDFA/GAID)",
+                  "hashed_email": "SHA-256 hashed email address",
+                  "publisher_first_party": "Publisher's own first-party identifier, opaque to buyers",
+                  "other": "Other universal ID type (specify in ext)"
+                }
+              },
+              "minItems": 1
+            },
+            "minimum_audience_size": {
+              "type": "integer",
+              "description": "Minimum matched audience size required for targeting. Audiences below this threshold will have status: too_small. Varies by platform (100\u20131000 is typical).",
+              "minimum": 1
+            },
+            "matching_latency_hours": {
+              "type": "object",
+              "description": "Expected matching latency range in hours after upload. Use to calibrate polling cadence and set appropriate expectations before configuring push_notification_config.",
+              "properties": {
+                "min": {
+                  "type": "integer",
+                  "minimum": 0
+                },
+                "max": {
+                  "type": "integer",
+                  "minimum": 0
+                }
+              },
+              "additionalProperties": false
+            }
+          },
+          "required": [
+            "supported_identifier_types",
+            "minimum_audience_size"
+          ],
+          "additionalProperties": true
+        },
+        "conversion_tracking": {
+          "type": "object",
+          "description": "Seller-level conversion tracking capabilities. Presence of this object indicates the seller supports sync_event_sources and log_event for conversion event tracking.",
+          "properties": {
+            "multi_source_event_dedup": {
+              "type": "boolean",
+              "description": "Whether this seller can deduplicate conversion events across multiple event sources within a single goal. When true, the seller honors the deduplication semantics in optimization_goals event_sources arrays \u2014 the same event_id from multiple sources counts once. When false or absent, buyers should use a single event source per goal; multi-source arrays will be treated as first-source-wins. Most social platforms cannot deduplicate across independently-managed pixel and CAPI sources."
+            },
+            "supported_event_types": {
+              "type": "array",
+              "description": "Event types this seller can track and attribute. If omitted, all standard event types are supported.",
+              "items": {
+                "title": "Event Type",
+                "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+                "type": "string",
+                "enum": [
+                  "page_view",
+                  "view_content",
+                  "select_content",
+                  "select_item",
+                  "search",
+                  "share",
+                  "add_to_cart",
+                  "remove_from_cart",
+                  "viewed_cart",
+                  "add_to_wishlist",
+                  "initiate_checkout",
+                  "add_payment_info",
+                  "purchase",
+                  "refund",
+                  "lead",
+                  "qualify_lead",
+                  "close_convert_lead",
+                  "disqualify_lead",
+                  "complete_registration",
+                  "subscribe",
+                  "start_trial",
+                  "app_install",
+                  "app_launch",
+                  "contact",
+                  "schedule",
+                  "donate",
+                  "submit_application",
+                  "custom"
+                ],
+                "enumDescriptions": {
+                  "page_view": "User viewed a page",
+                  "view_content": "User viewed specific content (product, article, etc.)",
+                  "select_content": "User selected or clicked on content (article, video, etc.)",
+                  "select_item": "User selected a specific product or item from a list",
+                  "search": "User performed a search",
+                  "share": "User shared content via social or messaging",
+                  "add_to_cart": "User added an item to cart",
+                  "remove_from_cart": "User removed an item from cart",
+                  "viewed_cart": "User viewed their shopping cart",
+                  "add_to_wishlist": "User added an item to a wishlist",
+                  "initiate_checkout": "User started checkout process",
+                  "add_payment_info": "User added payment information",
+                  "purchase": "User completed a purchase",
+                  "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                  "lead": "User expressed interest (form submission, signup, etc.)",
+                  "qualify_lead": "Lead qualified by sales or scoring criteria",
+                  "close_convert_lead": "Lead converted to a customer or closed deal",
+                  "disqualify_lead": "Lead disqualified or marked as not viable",
+                  "complete_registration": "User completed account registration",
+                  "subscribe": "User subscribed to a service or newsletter",
+                  "start_trial": "User started a free trial",
+                  "app_install": "User installed an application",
+                  "app_launch": "User launched an application",
+                  "contact": "User initiated contact (call, message, etc.)",
+                  "schedule": "User scheduled an appointment or event",
+                  "donate": "User made a donation",
+                  "submit_application": "User submitted an application (loan, job, etc.)",
+                  "custom": "Custom event type (specify in custom_event_name)"
+                }
+              },
+              "minItems": 1
+            },
+            "supported_uid_types": {
+              "type": "array",
+              "description": "Universal ID types accepted for user matching",
+              "items": {
+                "title": "UID Type",
+                "description": "Type of user identifier. Used in audience sync, event logging, and TMP identity match requests to tell the receiver which identity graph to resolve against.",
+                "type": "string",
+                "enum": [
+                  "rampid",
+                  "rampid_derived",
+                  "id5",
+                  "uid2",
+                  "euid",
+                  "pairid",
+                  "maid",
+                  "hashed_email",
+                  "publisher_first_party",
+                  "other"
+                ],
+                "enumDescriptions": {
+                  "rampid": "LiveRamp RampID maintained form (XY, 32 bytes on the wire)",
+                  "rampid_derived": "LiveRamp RampID derived form (Xi, 48 bytes on the wire)",
+                  "id5": "ID5 universal ID",
+                  "uid2": "Unified ID 2.0",
+                  "euid": "European Unified ID",
+                  "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+                  "maid": "Mobile Advertising ID (IDFA/GAID)",
+                  "hashed_email": "SHA-256 hashed email address",
+                  "publisher_first_party": "Publisher's own first-party identifier, opaque to buyers",
+                  "other": "Other universal ID type (specify in ext)"
+                }
+              },
+              "minItems": 1
+            },
+            "supported_hashed_identifiers": {
+              "type": "array",
+              "description": "Hashed PII types accepted for user matching. Buyers must hash before sending (SHA-256, normalized).",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "hashed_email",
+                  "hashed_phone"
+                ]
+              },
+              "minItems": 1
+            },
+            "supported_action_sources": {
+              "type": "array",
+              "description": "Action sources this seller accepts events from",
+              "items": {
+                "title": "Action Source",
+                "description": "Where the conversion event originated",
+                "type": "string",
+                "enum": [
+                  "website",
+                  "app",
+                  "offline",
+                  "phone_call",
+                  "chat",
+                  "email",
+                  "in_store",
+                  "system_generated",
+                  "other"
+                ],
+                "enumDescriptions": {
+                  "website": "Event occurred on a website",
+                  "app": "Event occurred in a mobile or desktop app",
+                  "offline": "Event occurred offline (imported data)",
+                  "phone_call": "Event originated from a phone call",
+                  "chat": "Event originated from a chat conversation",
+                  "email": "Event originated from an email interaction",
+                  "in_store": "Event occurred at a physical retail location",
+                  "system_generated": "Event generated by an automated system",
+                  "other": "Other source (specify in ext)"
+                }
+              },
+              "minItems": 1
+            },
+            "attribution_windows": {
+              "type": "array",
+              "description": "Attribution windows available from this seller. Single-element arrays indicate fixed windows; multi-element arrays indicate configurable options the buyer can choose from via attribution_window on optimization goals.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "event_type": {
+                    "title": "Event Type",
+                    "description": "Event type this window applies to, or omit for default window",
+                    "type": "string",
+                    "enum": [
+                      "page_view",
+                      "view_content",
+                      "select_content",
+                      "select_item",
+                      "search",
+                      "share",
+                      "add_to_cart",
+                      "remove_from_cart",
+                      "viewed_cart",
+                      "add_to_wishlist",
+                      "initiate_checkout",
+                      "add_payment_info",
+                      "purchase",
+                      "refund",
+                      "lead",
+                      "qualify_lead",
+                      "close_convert_lead",
+                      "disqualify_lead",
+                      "complete_registration",
+                      "subscribe",
+                      "start_trial",
+                      "app_install",
+                      "app_launch",
+                      "contact",
+                      "schedule",
+                      "donate",
+                      "submit_application",
+                      "custom"
+                    ],
+                    "enumDescriptions": {
+                      "page_view": "User viewed a page",
+                      "view_content": "User viewed specific content (product, article, etc.)",
+                      "select_content": "User selected or clicked on content (article, video, etc.)",
+                      "select_item": "User selected a specific product or item from a list",
+                      "search": "User performed a search",
+                      "share": "User shared content via social or messaging",
+                      "add_to_cart": "User added an item to cart",
+                      "remove_from_cart": "User removed an item from cart",
+                      "viewed_cart": "User viewed their shopping cart",
+                      "add_to_wishlist": "User added an item to a wishlist",
+                      "initiate_checkout": "User started checkout process",
+                      "add_payment_info": "User added payment information",
+                      "purchase": "User completed a purchase",
+                      "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
+                      "lead": "User expressed interest (form submission, signup, etc.)",
+                      "qualify_lead": "Lead qualified by sales or scoring criteria",
+                      "close_convert_lead": "Lead converted to a customer or closed deal",
+                      "disqualify_lead": "Lead disqualified or marked as not viable",
+                      "complete_registration": "User completed account registration",
+                      "subscribe": "User subscribed to a service or newsletter",
+                      "start_trial": "User started a free trial",
+                      "app_install": "User installed an application",
+                      "app_launch": "User launched an application",
+                      "contact": "User initiated contact (call, message, etc.)",
+                      "schedule": "User scheduled an appointment or event",
+                      "donate": "User made a donation",
+                      "submit_application": "User submitted an application (loan, job, etc.)",
+                      "custom": "Custom event type (specify in custom_event_name)"
+                    }
+                  },
+                  "post_click": {
+                    "type": "array",
+                    "description": "Available post-click attribution windows (e.g. [{\"interval\": 7, \"unit\": \"days\"}])",
+                    "items": {
+                      "title": "Duration",
+                      "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                      "type": "object",
+                      "properties": {
+                        "interval": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "seconds",
+                            "minutes",
+                            "hours",
+                            "days",
+                            "campaign"
+                          ],
+                          "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                        }
+                      },
+                      "required": [
+                        "interval",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "post_view": {
+                    "type": "array",
+                    "description": "Available post-view attribution windows (e.g. [{\"interval\": 1, \"unit\": \"days\"}])",
+                    "items": {
+                      "title": "Duration",
+                      "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+                      "type": "object",
+                      "properties": {
+                        "interval": {
+                          "type": "integer",
+                          "minimum": 1,
+                          "description": "Number of time units. Must be 1 when unit is 'campaign'."
+                        },
+                        "unit": {
+                          "type": "string",
+                          "enum": [
+                            "seconds",
+                            "minutes",
+                            "hours",
+                            "days",
+                            "campaign"
+                          ],
+                          "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+                        }
+                      },
+                      "required": [
+                        "interval",
+                        "unit"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "post_click"
+                ],
+                "additionalProperties": true
+              }
+            }
+          },
+          "additionalProperties": true
+        },
+        "content_standards": {
+          "type": "object",
+          "description": "Content standards implementation details. Presence of this object indicates the seller supports content_standards configuration including sampling rates and category filtering. Gives buyers pre-buy visibility into local evaluation and artifact delivery capabilities.",
+          "properties": {
+            "supports_local_evaluation": {
+              "type": "boolean",
+              "description": "Whether the seller runs a local evaluation model. When false, all artifacts will have local_verdict: 'unevaluated' and the failures_only filter on get_media_buy_artifacts is not useful."
+            },
+            "supported_channels": {
+              "type": "array",
+              "description": "Channels for which the seller can provide content artifacts. Helps buyers understand which parts of a mixed-channel buy will have content standards coverage.",
+              "items": {
+                "title": "Media Channel",
+                "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                "type": "string",
+                "enum": [
+                  "display",
+                  "olv",
+                  "social",
+                  "search",
+                  "ctv",
+                  "linear_tv",
+                  "radio",
+                  "streaming_audio",
+                  "podcast",
+                  "dooh",
+                  "ooh",
+                  "print",
+                  "cinema",
+                  "email",
+                  "gaming",
+                  "retail_media",
+                  "influencer",
+                  "affiliate",
+                  "product_placement",
+                  "sponsored_intelligence"
+                ],
+                "enumDescriptions": {
+                  "display": "Digital display advertising (banners, native, rich media) across web and app",
+                  "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                  "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                  "search": "Search engine advertising and search networks",
+                  "ctv": "Connected TV and streaming on television screens",
+                  "linear_tv": "Traditional broadcast and cable television",
+                  "radio": "Traditional AM/FM radio broadcast",
+                  "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                  "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                  "dooh": "Digital out-of-home screens in public spaces",
+                  "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                  "print": "Newspapers, magazines, and other print publications",
+                  "cinema": "Movie theater advertising",
+                  "email": "Email advertising and sponsored newsletter content",
+                  "gaming": "In-game advertising across platforms",
+                  "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                  "influencer": "Creator and influencer marketing partnerships",
+                  "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                  "product_placement": "Product placement, branded content, and sponsorship integrations",
+                  "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                }
+              },
+              "minItems": 1
+            },
+            "supports_webhook_delivery": {
+              "type": "boolean",
+              "description": "Whether the seller supports push-based artifact delivery via artifact_webhook configured at buy creation time."
+            }
+          }
+        },
+        "portfolio": {
+          "type": "object",
+          "description": "Information about the seller's media inventory portfolio. Expected for media_buy sellers \u2014 buyers use this to understand inventory coverage and verify authorization via adagents.json.",
+          "properties": {
+            "publisher_domains": {
+              "type": "array",
+              "description": "Publisher domains this seller is authorized to represent. Buyers should fetch each publisher's adagents.json for property definitions.",
+              "items": {
+                "type": "string",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "minItems": 1
+            },
+            "primary_channels": {
+              "type": "array",
+              "description": "Primary advertising channels in this portfolio",
+              "items": {
+                "title": "Media Channel",
+                "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+                "type": "string",
+                "enum": [
+                  "display",
+                  "olv",
+                  "social",
+                  "search",
+                  "ctv",
+                  "linear_tv",
+                  "radio",
+                  "streaming_audio",
+                  "podcast",
+                  "dooh",
+                  "ooh",
+                  "print",
+                  "cinema",
+                  "email",
+                  "gaming",
+                  "retail_media",
+                  "influencer",
+                  "affiliate",
+                  "product_placement",
+                  "sponsored_intelligence"
+                ],
+                "enumDescriptions": {
+                  "display": "Digital display advertising (banners, native, rich media) across web and app",
+                  "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+                  "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+                  "search": "Search engine advertising and search networks",
+                  "ctv": "Connected TV and streaming on television screens",
+                  "linear_tv": "Traditional broadcast and cable television",
+                  "radio": "Traditional AM/FM radio broadcast",
+                  "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+                  "podcast": "Podcast advertising (host-read or dynamically inserted)",
+                  "dooh": "Digital out-of-home screens in public spaces",
+                  "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+                  "print": "Newspapers, magazines, and other print publications",
+                  "cinema": "Movie theater advertising",
+                  "email": "Email advertising and sponsored newsletter content",
+                  "gaming": "In-game advertising across platforms",
+                  "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
+                  "influencer": "Creator and influencer marketing partnerships",
+                  "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
+                  "product_placement": "Product placement, branded content, and sponsorship integrations",
+                  "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+                }
+              }
+            },
+            "primary_countries": {
+              "type": "array",
+              "description": "Primary countries (ISO 3166-1 alpha-2) where inventory is concentrated",
+              "items": {
+                "type": "string",
+                "pattern": "^[A-Z]{2}$"
+              }
+            },
+            "description": {
+              "type": "string",
+              "description": "Markdown-formatted description of the inventory portfolio",
+              "maxLength": 5000
+            },
+            "advertising_policies": {
+              "type": "string",
+              "description": "Advertising content policies, restrictions, and guidelines",
+              "maxLength": 10000
+            }
+          },
+          "required": [
+            "publisher_domains"
+          ]
+        }
+      }
+    },
+    "signals": {
+      "type": "object",
+      "description": "Signals protocol capabilities. Only present if signals is in supported_protocols.",
+      "properties": {
+        "data_provider_domains": {
+          "type": "array",
+          "description": "Data provider domains this signals agent is authorized to resell. Buyers should fetch each data provider's adagents.json for signal catalog definitions and to verify authorization.",
+          "items": {
+            "type": "string",
+            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+          },
+          "minItems": 1
+        },
+        "features": {
+          "type": "object",
+          "description": "Optional signals features supported",
+          "properties": {
+            "catalog_signals": {
+              "type": "boolean",
+              "description": "Supports signals from data provider catalogs with structured signal_id references"
+            }
+          },
+          "additionalProperties": {
+            "type": "boolean"
+          }
+        }
+      }
+    },
+    "governance": {
+      "type": "object",
+      "description": "Governance protocol capabilities. Only present if governance is in supported_protocols. Governance agents provide property and creative data like compliance scores, brand safety ratings, sustainability metrics, and creative quality assessments.",
+      "properties": {
+        "property_features": {
+          "type": "array",
+          "description": "Property features this governance agent can evaluate. Each feature describes a score, rating, or certification the agent can provide for properties.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "Unique identifier for this feature (e.g., 'consent_quality', 'coppa_certified', 'carbon_score')"
+              },
+              "type": {
+                "type": "string",
+                "enum": [
+                  "binary",
+                  "quantitative",
+                  "categorical"
+                ],
+                "description": "Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+              },
+              "range": {
+                "type": "object",
+                "description": "For quantitative features, the valid range",
+                "properties": {
+                  "min": {
+                    "type": "number",
+                    "description": "Minimum value"
+                  },
+                  "max": {
+                    "type": "number",
+                    "description": "Maximum value"
+                  }
+                },
+                "required": [
+                  "min",
+                  "max"
+                ]
+              },
+              "categories": {
+                "type": "array",
+                "description": "For categorical features, the valid values",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "description": {
+                "type": "string",
+                "description": "Human-readable description of what this feature measures"
+              },
+              "methodology_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to documentation explaining how this feature is calculated or measured. Helps buyers understand and compare methodologies across vendors."
+              }
+            },
+            "required": [
+              "feature_id",
+              "type"
+            ]
+          }
+        },
+        "creative_features": {
+          "type": "array",
+          "description": "Creative features this governance agent can evaluate. Each feature describes a score, rating, or assessment the agent can provide for creatives (e.g., security scanning, creative quality, content categorization).",
+          "items": {
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "Unique identifier for this feature (e.g., 'auto_redirect', 'brand_consistency', 'iab_casinos_gambling')"
+              },
+              "type": {
+                "type": "string",
+                "enum": [
+                  "binary",
+                  "quantitative",
+                  "categorical"
+                ],
+                "description": "Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+              },
+              "range": {
+                "type": "object",
+                "description": "For quantitative features, the valid range",
+                "properties": {
+                  "min": {
+                    "type": "number",
+                    "description": "Minimum value"
+                  },
+                  "max": {
+                    "type": "number",
+                    "description": "Maximum value"
+                  }
+                },
+                "required": [
+                  "min",
+                  "max"
+                ]
+              },
+              "categories": {
+                "type": "array",
+                "description": "For categorical features, the valid values",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "description": {
+                "type": "string",
+                "description": "Human-readable description of what this feature measures"
+              },
+              "methodology_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to documentation explaining how this feature is calculated or measured."
+              }
+            },
+            "required": [
+              "feature_id",
+              "type"
+            ]
+          }
+        }
+      }
+    },
+    "sponsored_intelligence": {
+      "type": "object",
+      "description": "Sponsored Intelligence protocol capabilities. Only present if sponsored_intelligence is in supported_protocols. SI agents handle conversational brand experiences.",
+      "properties": {
+        "endpoint": {
+          "type": "object",
+          "description": "SI agent endpoint configuration",
+          "properties": {
+            "transports": {
+              "type": "array",
+              "description": "Available protocol transports. Hosts select based on their capabilities.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "enum": [
+                      "mcp",
+                      "a2a"
+                    ],
+                    "description": "Protocol transport type"
+                  },
+                  "url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "Agent endpoint URL for this transport"
+                  }
+                },
+                "required": [
+                  "type",
+                  "url"
+                ],
+                "additionalProperties": true
+              },
+              "minItems": 1
+            },
+            "preferred": {
+              "type": "string",
+              "enum": [
+                "mcp",
+                "a2a"
+              ],
+              "description": "Preferred transport when host supports multiple"
+            }
+          },
+          "required": [
+            "transports"
+          ]
+        },
+        "capabilities": {
+          "title": "SI Capabilities",
+          "description": "Modalities, components, and commerce capabilities",
+          "type": "object",
+          "properties": {
+            "modalities": {
+              "type": "object",
+              "description": "Interaction modalities supported",
+              "properties": {
+                "conversational": {
+                  "type": "boolean",
+                  "description": "Pure text exchange - the baseline modality",
+                  "default": true
+                },
+                "voice": {
+                  "oneOf": [
+                    {
+                      "type": "boolean"
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "provider": {
+                          "type": "string",
+                          "description": "TTS provider (elevenlabs, openai, etc.)"
+                        },
+                        "voice_id": {
+                          "type": "string",
+                          "description": "Brand voice identifier"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  ],
+                  "description": "Audio-based interaction using brand voice"
+                },
+                "video": {
+                  "oneOf": [
+                    {
+                      "type": "boolean"
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "formats": {
+                          "type": "array",
+                          "items": {
+                            "type": "string"
+                          },
+                          "description": "Supported video formats (mp4, webm, etc.)"
+                        },
+                        "max_duration_seconds": {
+                          "type": "integer",
+                          "description": "Maximum video duration"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  ],
+                  "description": "Brand video content playback"
+                },
+                "avatar": {
+                  "oneOf": [
+                    {
+                      "type": "boolean"
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "provider": {
+                          "type": "string",
+                          "description": "Avatar provider (d-id, heygen, synthesia, etc.)"
+                        },
+                        "avatar_id": {
+                          "type": "string",
+                          "description": "Brand avatar identifier"
+                        }
+                      },
+                      "additionalProperties": true
+                    }
+                  ],
+                  "description": "Animated video presence with brand avatar"
+                }
+              },
+              "additionalProperties": true
+            },
+            "components": {
+              "type": "object",
+              "description": "Visual components supported",
+              "properties": {
+                "standard": {
+                  "type": "array",
+                  "items": {
+                    "type": "string",
+                    "enum": [
+                      "text",
+                      "link",
+                      "image",
+                      "product_card",
+                      "carousel",
+                      "action_button"
+                    ]
+                  },
+                  "description": "Standard components that all SI hosts must render"
+                },
+                "extensions": {
+                  "type": "object",
+                  "description": "Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)",
+                  "additionalProperties": true
+                }
+              },
+              "additionalProperties": true
+            },
+            "commerce": {
+              "type": "object",
+              "description": "Commerce capabilities",
+              "properties": {
+                "acp_checkout": {
+                  "type": "boolean",
+                  "description": "Supports ACP (Agentic Commerce Protocol) checkout handoff"
+                }
+              },
+              "additionalProperties": true
+            },
+            "a2ui": {
+              "type": "object",
+              "description": "A2UI (Agent-to-UI) capabilities",
+              "properties": {
+                "supported": {
+                  "type": "boolean",
+                  "description": "Supports A2UI surface rendering",
+                  "default": false
+                },
+                "catalogs": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  },
+                  "description": "Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"
+                }
+              },
+              "additionalProperties": true
+            },
+            "mcp_apps": {
+              "type": "boolean",
+              "description": "Supports MCP Apps for rendering A2UI surfaces in iframes",
+              "default": false
+            }
+          },
+          "additionalProperties": true
+        },
+        "brand_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to brand.json with colors, fonts, logos, tone"
+        }
+      },
+      "required": [
+        "endpoint",
+        "capabilities"
+      ]
+    },
+    "brand": {
+      "type": "object",
+      "description": "Brand protocol capabilities. Only present if brand is in supported_protocols. Brand agents provide identity data (logos, colors, tone, assets) and optionally rights clearance for licensable content (talent, music, stock media).",
+      "properties": {
+        "rights": {
+          "type": "boolean",
+          "description": "Supports get_rights and acquire_rights for rights discovery and clearance",
+          "default": false
+        },
+        "right_types": {
+          "type": "array",
+          "description": "Types of rights available through this agent",
+          "items": {
+            "title": "Right Type",
+            "description": "Categories of intellectual property rights that can be licensed through the brand protocol.",
+            "type": "string",
+            "enum": [
+              "talent",
+              "character",
+              "brand_ip",
+              "music",
+              "stock_media"
+            ],
+            "enumDescriptions": {
+              "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
+              "character": "Rights to fictional characters for advertising or co-branding",
+              "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+              "music": "Rights to musical compositions or recordings (sync, background music)",
+              "stock_media": "Rights to stock photography, video, or audio collections"
+            }
+          }
+        },
+        "available_uses": {
+          "type": "array",
+          "description": "Rights uses available across this agent's roster",
+          "items": {
+            "title": "Right Use",
+            "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+            "type": "string",
+            "enum": [
+              "likeness",
+              "voice",
+              "name",
+              "endorsement",
+              "motion_capture",
+              "signature",
+              "catchphrase",
+              "sync",
+              "background_music",
+              "editorial",
+              "commercial"
+            ],
+            "enumDescriptions": {
+              "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
+              "voice": "Audio reproduction of a person's voice, including AI-generated speech",
+              "name": "Use of a person's name in advertising or promotional materials",
+              "endorsement": "Implied or explicit endorsement of a product or service by a person",
+              "motion_capture": "Use of a person's movement patterns for animation or video",
+              "signature": "Use of a person's signature or autograph",
+              "catchphrase": "Use of a person's well-known phrases or sayings",
+              "sync": "Synchronization of music with visual media (ads, video)",
+              "background_music": "Use of music as background audio in advertising",
+              "editorial": "Use in editorial or informational contexts",
+              "commercial": "Use in commercial advertising and promotional contexts"
+            }
+          }
+        },
+        "generation_providers": {
+          "type": "array",
+          "description": "LLM/generation providers this agent can issue credentials for",
+          "items": {
+            "type": "string"
+          }
+        },
+        "description": {
+          "type": "string",
+          "description": "Description of the agent's brand protocol capabilities",
+          "maxLength": 5000
+        }
+      },
+      "additionalProperties": true
+    },
+    "creative": {
+      "type": "object",
+      "description": "Creative protocol capabilities. Only present if creative is in supported_protocols.",
+      "properties": {
+        "supports_compliance": {
+          "type": "boolean",
+          "description": "When true, this creative agent can process briefs with compliance requirements (required_disclosures, prohibited_claims) and will validate that disclosures can be satisfied by the target format."
+        },
+        "has_creative_library": {
+          "type": "boolean",
+          "description": "When true, this agent hosts a creative library and supports list_creatives and creative_id references in build_creative. Creative agents with a library should also implement the accounts protocol (sync_accounts / list_accounts) so buyers can establish access.",
+          "default": false
+        },
+        "supports_generation": {
+          "type": "boolean",
+          "description": "When true, this agent can generate creatives from natural language briefs via build_creative. The buyer provides a message with creative direction, and the agent produces a manifest with generated assets. When false, build_creative only supports transformation or library retrieval.",
+          "default": false
+        },
+        "supports_transformation": {
+          "type": "boolean",
+          "description": "When true, this agent can transform or resize existing manifests via build_creative. The buyer provides a creative_manifest and a target_format_id, and the agent adapts the creative to the new format.",
+          "default": false
+        }
+      },
+      "additionalProperties": true
+    },
+    "request_signing": {
+      "type": "object",
+      "description": "RFC 9421 HTTP Signatures support for incoming requests. Optional in 3.0 \u2014 capability-advertised so counterparties can opt into signing selectively. Required for spend-committing operations in 4.0 (the next breaking-changes accumulation window). The full profile is defined in docs/building/implementation/security.mdx (Signed Requests (Transport Layer)).",
+      "properties": {
+        "supported": {
+          "type": "boolean",
+          "description": "Whether this agent verifies RFC 9421 signatures on incoming requests. When true, signatures present on requests are validated per the AdCP request-signing profile. When false or absent, signatures are ignored (requests are bearer-authenticated only)."
+        },
+        "covers_content_digest": {
+          "type": "string",
+          "enum": [
+            "required",
+            "forbidden",
+            "either"
+          ],
+          "description": "Policy for content-digest coverage in request signatures. 'required': signers MUST cover content-digest (body is bound to the signature); body-unbound signatures rejected with request_signature_components_incomplete. 'forbidden': signers MUST NOT cover content-digest; body-bound signatures rejected with request_signature_components_unexpected. This is an opt-out for the narrow case of legacy infrastructure that cannot preserve body bytes. 'either' (default): signer chooses per-request; verifier accepts both covered and uncovered forms. 'required' is recommended for spend-committing operations in production; 4.0 recommends 'required' for those operations.",
+          "default": "either"
+        },
+        "required_for": {
+          "type": "array",
+          "description": "AdCP protocol operation names (e.g., 'create_media_buy') for which this agent rejects unsigned requests with request_signature_required. Not MCP tool names, A2A skill names, or any transport-specific rename \u2014 verifiers MUST NOT accept operation names that are not defined by the AdCP protocol spec. Empty in 3.0 by default; sellers populate selectively during per-counterparty pilots. In 4.0 this list MUST include all spend-committing operations the agent supports (create_media_buy, acquire_*, etc.). Counterparties MUST sign any listed operation.",
+          "items": {
+            "type": "string"
+          },
+          "default": []
+        },
+        "warn_for": {
+          "type": "array",
+          "description": "AdCP protocol operation names for which this agent verifies signatures when present and logs failures but does NOT reject the request. Used as a shadow-mode bridge between supported_for and required_for: the verifier surfaces failure rates in monitoring before flipping an operation to required. Precedence: required_for > warn_for > supported_for. An operation in required_for ignores warn_for. Counterparties SHOULD sign operations in warn_for; verifiers MUST NOT reject if the signature is missing or invalid.",
+          "items": {
+            "type": "string"
+          },
+          "default": []
+        },
+        "supported_for": {
+          "type": "array",
+          "description": "AdCP protocol operation names for which this agent verifies signatures when present but does not require them. Counterparties SHOULD sign operations in this list. Typically a superset of required_for and warn_for.",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "required": [
+        "supported"
+      ]
+    },
+    "compliance_testing": {
+      "type": "object",
+      "description": "Compliance testing capabilities. The presence of this block declares that the agent supports deterministic testing via comply_test_controller for lifecycle state machine validation. Omit the block entirely if the agent does not support compliance testing.",
+      "properties": {
+        "scenarios": {
+          "type": "array",
+          "description": "Compliance testing scenarios this agent supports. Must be non-empty \u2014 at least one scenario. Callers can also use comply_test_controller with scenario: 'list_scenarios' to discover supported scenarios at runtime.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "force_creative_status",
+              "force_account_status",
+              "force_media_buy_status",
+              "force_session_status",
+              "simulate_delivery",
+              "simulate_budget_spend"
+            ]
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "scenarios"
+      ],
+      "additionalProperties": true
+    },
+    "specialisms": {
+      "type": "array",
+      "description": "Optional \u2014 specialized compliance claims this agent supports. Omitting the field means the agent declares no specialism claims (it still passes the universal + domain-baseline storyboards implied by supported_protocols). Each specialism maps to a storyboard bundle at /compliance/{version}/specialisms/{id}/ that the AAO compliance runner executes to verify the claim. Each specialism rolls up to one of the protocols in supported_protocols \u2014 the runner rejects a specialism claim whose parent protocol is missing. Only list specialisms your agent actually implements \u2014 the AAO Verified badge enumerates which specialisms were demonstrably passed.",
+      "items": {
+        "title": "AdCP Specialism",
+        "description": "Specialized capability claims an agent can make. Each specialism maps to a compliance storyboard bundle published at /compliance/{version}/specialisms/{id}/. An agent asserts specialisms it supports in get_adcp_capabilities; the AAO compliance runner executes the matching storyboards to verify the claim.",
+        "type": "string",
+        "enum": [
+          "audience-sync",
+          "brand-rights",
+          "content-standards",
+          "creative-ad-server",
+          "creative-generative",
+          "creative-template",
+          "governance-delivery-monitor",
+          "governance-spend-authority",
+          "measurement-verification",
+          "property-lists",
+          "sales-broadcast-tv",
+          "sales-catalog-driven",
+          "sales-exchange",
+          "sales-guaranteed",
+          "sales-non-guaranteed",
+          "sales-proposal-mode",
+          "sales-retail-media",
+          "sales-social",
+          "sales-streaming-tv",
+          "signal-marketplace",
+          "signal-owned",
+          "signed-requests"
+        ],
+        "enumDescriptions": {
+          "audience-sync": "Syncs buyer-provided audience segments into a platform for activation",
+          "brand-rights": "Brand identity and rights licensing (talent, music, stock media)",
+          "content-standards": "Content standards enforcement (brand safety, policy compliance)",
+          "creative-ad-server": "Creative ad server with tag-based delivery",
+          "creative-generative": "Generative creative agent producing assets on demand",
+          "creative-template": "Creative template and transformation agent",
+          "governance-delivery-monitor": "Campaign delivery monitoring with drift detection",
+          "governance-spend-authority": "Conditional spend approval and human-in-the-loop governance",
+          "measurement-verification": "Third-party measurement and verification across domains (viewability, brand safety, attribution, SI outcomes)",
+          "property-lists": "Property list governance \u2014 curated inclusion and exclusion lists for targeting and delivery compliance",
+          "sales-broadcast-tv": "Broadcast linear TV seller with guaranteed inventory and FCC cancellation rules",
+          "sales-catalog-driven": "Catalog-driven commerce with conversion tracking",
+          "sales-exchange": "Programmatic exchange or SSP exposing auction-based inventory",
+          "sales-guaranteed": "Guaranteed media buys with human IO approval",
+          "sales-non-guaranteed": "Non-guaranteed auction-based media buys",
+          "sales-proposal-mode": "Media buys negotiated via proposal acceptance",
+          "sales-retail-media": "Retail media network seller with onsite, offsite, and in-store inventory",
+          "sales-social": "Social media advertising platform with self-service flows",
+          "sales-streaming-tv": "Connected TV and streaming seller with ad-supported video inventory",
+          "signal-marketplace": "Marketplace signal agent reselling third-party data",
+          "signal-owned": "Owned signal agent exposing first-party segments",
+          "signed-requests": "Agent verifies RFC 9421 transport-layer request signatures per the AdCP request-signing profile. Graded by exercising 29 conformance vectors (21 negative + 8 positive) against the agent's live verifier."
+        }
+      },
+      "uniqueItems": true
+    },
+    "extensions_supported": {
+      "type": "array",
+      "description": "Extension namespaces this agent supports. Buyers can expect meaningful data in ext.{namespace} fields on responses from this agent. Extension schemas are published in the AdCP extension registry.",
+      "items": {
+        "type": "string",
+        "pattern": "^[a-z][a-z0-9_]*$",
+        "description": "Extension namespace (lowercase alphanumeric with underscores, e.g., 'iab_tcf', 'iab_gpp')"
+      },
+      "uniqueItems": true
+    },
+    "last_updated": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp of when capabilities were last updated. Buyers can use this for cache invalidation."
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "adcp",
+    "supported_protocols"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.476Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/signals/activate-signal-request.json b/schemas/cache/bundled/signals/activate-signal-request.json
new file mode 100644
index 000000000..a5696afd6
--- /dev/null
+++ b/schemas/cache/bundled/signals/activate-signal-request.json
@@ -0,0 +1,221 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Activate Signal Request",
+  "description": "Request parameters for activating or deactivating a signal on deployment targets",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "action": {
+      "type": "string",
+      "enum": [
+        "activate",
+        "deactivate"
+      ],
+      "default": "activate",
+      "description": "Whether to activate or deactivate the signal. Deactivating removes the segment from downstream platforms, required when campaigns end to comply with data governance policies (GDPR, CCPA). Defaults to 'activate' when omitted."
+    },
+    "signal_agent_segment_id": {
+      "type": "string",
+      "description": "The universal identifier for the signal to activate"
+    },
+    "destinations": {
+      "type": "array",
+      "description": "Target destination(s) for activation. If the authenticated caller matches one of these destinations, activation keys will be included in the response.",
+      "items": {
+        "title": "Destination",
+        "description": "A deployment target where signals can be activated (DSP, sales agent, etc.)",
+        "oneOf": [
+          {
+            "type": "object",
+            "properties": {
+              "type": {
+                "const": "platform",
+                "description": "Discriminator indicating this is a platform-based deployment"
+              },
+              "platform": {
+                "type": "string",
+                "description": "Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')"
+              },
+              "account": {
+                "type": "string",
+                "description": "Optional account identifier on the platform"
+              }
+            },
+            "required": [
+              "type",
+              "platform"
+            ],
+            "additionalProperties": true
+          },
+          {
+            "type": "object",
+            "properties": {
+              "type": {
+                "const": "agent",
+                "description": "Discriminator indicating this is an agent URL-based deployment"
+              },
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL identifying the deployment agent (for sales agents, etc.)"
+              },
+              "account": {
+                "type": "string",
+                "description": "Optional account identifier on the agent"
+              }
+            },
+            "required": [
+              "type",
+              "agent_url"
+            ],
+            "additionalProperties": true
+          }
+        ]
+      },
+      "minItems": 1
+    },
+    "pricing_option_id": {
+      "type": "string",
+      "description": "The pricing option selected from the signal's pricing_options in the get_signals response. Required when the signal has pricing options. Records the buyer's pricing commitment at activation time; pass this same value in report_usage for billing verification."
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account for this activation. Associates with a commercial relationship established via sync_accounts.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate activations on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "signal_agent_segment_id",
+    "destinations"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.477Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/signals/activate-signal-response.json b/schemas/cache/bundled/signals/activate-signal-response.json
new file mode 100644
index 000000000..ccdd0c425
--- /dev/null
+++ b/schemas/cache/bundled/signals/activate-signal-response.json
@@ -0,0 +1,319 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Activate Signal Response",
+  "description": "Response payload for activate_signal task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - the signal is either fully activated or not activated at all.",
+  "type": "object",
+  "oneOf": [
+    {
+      "title": "ActivateSignalSuccess",
+      "description": "Success response - signal activated successfully to one or more deployment targets",
+      "type": "object",
+      "properties": {
+        "deployments": {
+          "type": "array",
+          "description": "Array of deployment results for each deployment target",
+          "items": {
+            "title": "Deployment",
+            "description": "A signal deployment to a specific deployment target with activation status and key",
+            "oneOf": [
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "platform",
+                    "description": "Discriminator indicating this is a platform-based deployment"
+                  },
+                  "platform": {
+                    "type": "string",
+                    "description": "Platform identifier for DSPs"
+                  },
+                  "account": {
+                    "type": "string",
+                    "description": "Account identifier if applicable"
+                  },
+                  "is_live": {
+                    "type": "boolean",
+                    "description": "Whether signal is currently active on this deployment"
+                  },
+                  "activation_key": {
+                    "title": "Activation Key",
+                    "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.",
+                    "type": "object",
+                    "oneOf": [
+                      {
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "const": "segment_id",
+                            "description": "Segment ID based targeting"
+                          },
+                          "segment_id": {
+                            "type": "string",
+                            "description": "The platform-specific segment identifier to use in campaign targeting"
+                          }
+                        },
+                        "required": [
+                          "type",
+                          "segment_id"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "const": "key_value",
+                            "description": "Key-value pair based targeting"
+                          },
+                          "key": {
+                            "type": "string",
+                            "description": "The targeting parameter key"
+                          },
+                          "value": {
+                            "type": "string",
+                            "description": "The targeting parameter value"
+                          }
+                        },
+                        "required": [
+                          "type",
+                          "key",
+                          "value"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  "estimated_activation_duration_minutes": {
+                    "type": "number",
+                    "description": "Estimated time to activate if not live, or to complete activation if in progress",
+                    "minimum": 0
+                  },
+                  "deployed_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Timestamp when activation completed (if is_live=true)"
+                  }
+                },
+                "required": [
+                  "type",
+                  "platform",
+                  "is_live"
+                ],
+                "additionalProperties": true
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "agent",
+                    "description": "Discriminator indicating this is an agent URL-based deployment"
+                  },
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL identifying the deployment agent"
+                  },
+                  "account": {
+                    "type": "string",
+                    "description": "Account identifier if applicable"
+                  },
+                  "is_live": {
+                    "type": "boolean",
+                    "description": "Whether signal is currently active on this deployment"
+                  },
+                  "activation_key": {
+                    "title": "Activation Key",
+                    "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.",
+                    "type": "object",
+                    "oneOf": [
+                      {
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "const": "segment_id",
+                            "description": "Segment ID based targeting"
+                          },
+                          "segment_id": {
+                            "type": "string",
+                            "description": "The platform-specific segment identifier to use in campaign targeting"
+                          }
+                        },
+                        "required": [
+                          "type",
+                          "segment_id"
+                        ],
+                        "additionalProperties": true
+                      },
+                      {
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "const": "key_value",
+                            "description": "Key-value pair based targeting"
+                          },
+                          "key": {
+                            "type": "string",
+                            "description": "The targeting parameter key"
+                          },
+                          "value": {
+                            "type": "string",
+                            "description": "The targeting parameter value"
+                          }
+                        },
+                        "required": [
+                          "type",
+                          "key",
+                          "value"
+                        ],
+                        "additionalProperties": true
+                      }
+                    ]
+                  },
+                  "estimated_activation_duration_minutes": {
+                    "type": "number",
+                    "description": "Estimated time to activate if not live, or to complete activation if in progress",
+                    "minimum": 0
+                  },
+                  "deployed_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "Timestamp when activation completed (if is_live=true)"
+                  }
+                },
+                "required": [
+                  "type",
+                  "agent_url",
+                  "is_live"
+                ],
+                "additionalProperties": true
+              }
+            ]
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "deployments"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
+    },
+    {
+      "title": "ActivateSignalError",
+      "description": "Error response - operation failed, signal not activated",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Array of errors explaining why activation failed (e.g., platform connectivity issues, signal definition problems, authentication failures)",
+          "items": {
+            "title": "Error",
+            "description": "Standard error structure for task-specific errors and warnings",
+            "type": "object",
+            "properties": {
+              "code": {
+                "type": "string",
+                "minLength": 1,
+                "maxLength": 64,
+                "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+              },
+              "message": {
+                "type": "string",
+                "description": "Human-readable error message"
+              },
+              "field": {
+                "type": "string",
+                "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+              },
+              "suggestion": {
+                "type": "string",
+                "description": "Suggested fix for the error"
+              },
+              "retry_after": {
+                "type": "number",
+                "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+                "minimum": 1,
+                "maximum": 3600
+              },
+              "details": {
+                "type": "object",
+                "description": "Additional task-specific error details",
+                "additionalProperties": true
+              },
+              "recovery": {
+                "type": "string",
+                "enum": [
+                  "transient",
+                  "correctable",
+                  "terminal"
+                ],
+                "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+              }
+            },
+            "required": [
+              "code",
+              "message"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "context": {
+          "title": "Context Object",
+          "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+          "type": "object",
+          "additionalProperties": true
+        },
+        "ext": {
+          "title": "Extension Object",
+          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "deployments"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.478Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/signals/get-signals-request.json b/schemas/cache/bundled/signals/get-signals-request.json
new file mode 100644
index 000000000..f5f8035a9
--- /dev/null
+++ b/schemas/cache/bundled/signals/get-signals-request.json
@@ -0,0 +1,362 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Signals Request",
+  "description": "Request parameters for discovering and refining signals. Use signal_spec for natural language discovery, signal_ids for exact lookups, or both to refine previous results (signal_ids anchor the starting set, signal_spec guides adjustments).",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "title": "Account Reference",
+      "description": "Account for this request. When provided, the signals agent returns per-account pricing options if configured.",
+      "type": "object",
+      "oneOf": [
+        {
+          "properties": {
+            "account_id": {
+              "type": "string",
+              "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
+            }
+          },
+          "required": [
+            "account_id"
+          ],
+          "additionalProperties": false
+        },
+        {
+          "properties": {
+            "brand": {
+              "title": "Brand Reference",
+              "description": "Brand reference identifying the advertiser",
+              "type": "object",
+              "properties": {
+                "domain": {
+                  "type": "string",
+                  "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+                  "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                },
+                "brand_id": {
+                  "title": "Brand ID",
+                  "description": "Brand identifier within the house portfolio. Optional for single-brand domains.",
+                  "type": "string",
+                  "pattern": "^[a-z0-9_]+$",
+                  "examples": [
+                    "tide",
+                    "cheerios",
+                    "air_jordan",
+                    "nike",
+                    "pampers"
+                  ]
+                }
+              },
+              "required": [
+                "domain"
+              ],
+              "additionalProperties": false,
+              "examples": [
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "spark"
+                },
+                {
+                  "domain": "nova-brands.com",
+                  "brand_id": "glow"
+                },
+                {
+                  "domain": "acme-corp.com"
+                }
+              ]
+            },
+            "operator": {
+              "type": "string",
+              "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+              "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+            },
+            "sandbox": {
+              "type": "boolean",
+              "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
+              "default": false
+            }
+          },
+          "required": [
+            "brand",
+            "operator"
+          ],
+          "additionalProperties": false
+        }
+      ],
+      "examples": [
+        {
+          "account_id": "acc_acme_001"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com"
+        },
+        {
+          "brand": {
+            "domain": "nova-brands.com",
+            "brand_id": "spark"
+          },
+          "operator": "pinnacle-media.com"
+        },
+        {
+          "brand": {
+            "domain": "acme-corp.com"
+          },
+          "operator": "acme-corp.com",
+          "sandbox": true
+        }
+      ]
+    },
+    "signal_spec": {
+      "type": "string",
+      "description": "Natural language description of the desired signals. When used alone, enables semantic discovery. When combined with signal_ids, provides context for the agent but signal_ids matches are returned first."
+    },
+    "signal_ids": {
+      "type": "array",
+      "description": "Specific signals to look up by data provider and ID. Returns exact matches from the data provider's catalog. When combined with signal_spec, these signals anchor the starting set and signal_spec guides adjustments.",
+      "items": {
+        "title": "Signal ID",
+        "description": "Universal signal identifier. Uses 'source' as discriminator: 'catalog' for signals from a data provider's published catalog (verifiable), 'agent' for agent-native signals (not externally verifiable).",
+        "discriminator": {
+          "propertyName": "source"
+        },
+        "oneOf": [
+          {
+            "type": "object",
+            "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+            "properties": {
+              "source": {
+                "type": "string",
+                "const": "catalog",
+                "description": "Discriminator indicating this signal is from a data provider's published catalog"
+              },
+              "data_provider_domain": {
+                "type": "string",
+                "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+              }
+            },
+            "required": [
+              "source",
+              "data_provider_domain",
+              "id"
+            ],
+            "additionalProperties": true
+          },
+          {
+            "type": "object",
+            "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+            "properties": {
+              "source": {
+                "type": "string",
+                "const": "agent",
+                "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+              },
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+              },
+              "id": {
+                "type": "string",
+                "pattern": "^[a-zA-Z0-9_-]+$",
+                "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+              }
+            },
+            "required": [
+              "source",
+              "agent_url",
+              "id"
+            ],
+            "additionalProperties": true
+          }
+        ]
+      },
+      "minItems": 1
+    },
+    "destinations": {
+      "type": "array",
+      "description": "Filter signals to those activatable on specific agents/platforms. When omitted, returns all signals available on the current agent. If the authenticated caller matches one of these destinations, activation keys will be included in the response.",
+      "items": {
+        "title": "Destination",
+        "description": "A deployment target where signals can be activated (DSP, sales agent, etc.)",
+        "oneOf": [
+          {
+            "type": "object",
+            "properties": {
+              "type": {
+                "const": "platform",
+                "description": "Discriminator indicating this is a platform-based deployment"
+              },
+              "platform": {
+                "type": "string",
+                "description": "Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')"
+              },
+              "account": {
+                "type": "string",
+                "description": "Optional account identifier on the platform"
+              }
+            },
+            "required": [
+              "type",
+              "platform"
+            ],
+            "additionalProperties": true
+          },
+          {
+            "type": "object",
+            "properties": {
+              "type": {
+                "const": "agent",
+                "description": "Discriminator indicating this is an agent URL-based deployment"
+              },
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL identifying the deployment agent (for sales agents, etc.)"
+              },
+              "account": {
+                "type": "string",
+                "description": "Optional account identifier on the agent"
+              }
+            },
+            "required": [
+              "type",
+              "agent_url"
+            ],
+            "additionalProperties": true
+          }
+        ]
+      },
+      "minItems": 1
+    },
+    "countries": {
+      "type": "array",
+      "description": "Countries where signals will be used (ISO 3166-1 alpha-2 codes). When omitted, no geographic filter is applied.",
+      "items": {
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
+      },
+      "minItems": 1
+    },
+    "filters": {
+      "title": "Signal Filters",
+      "description": "Filters to refine signal discovery results",
+      "type": "object",
+      "properties": {
+        "catalog_types": {
+          "type": "array",
+          "description": "Filter by catalog type",
+          "items": {
+            "title": "Signal Catalog Type",
+            "description": "Types of signal catalogs available for audience targeting",
+            "type": "string",
+            "enum": [
+              "marketplace",
+              "custom",
+              "owned"
+            ],
+            "enumDescriptions": {
+              "marketplace": "Resold third-party segments (provider authorization verifiable via the provider's adagents.json)",
+              "custom": "Agent-native segment built on demand from models, composites, or buyer inputs \u2014 not attributable to a standing upstream provider",
+              "owned": "First-party segments derived from data the signal agent directly owns (retailer purchase data, publisher behavioral data, telco data)"
+            }
+          },
+          "minItems": 1
+        },
+        "data_providers": {
+          "type": "array",
+          "description": "Filter by specific data providers",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "max_cpm": {
+          "type": "number",
+          "description": "Maximum CPM filter. Applies only to signals with model='cpm'.",
+          "minimum": 0
+        },
+        "max_percent": {
+          "type": "number",
+          "description": "Maximum percent-of-media rate filter. Signals where all percent_of_media pricing options exceed this value are excluded. Does not account for max_cpm caps.",
+          "minimum": 0,
+          "maximum": 100
+        },
+        "min_coverage_percentage": {
+          "type": "number",
+          "description": "Minimum coverage requirement",
+          "minimum": 0,
+          "maximum": 100
+        }
+      },
+      "additionalProperties": true
+    },
+    "max_results": {
+      "type": "integer",
+      "description": "Maximum number of results to return",
+      "minimum": 1
+    },
+    "pagination": {
+      "title": "Pagination Request",
+      "description": "Standard cursor-based pagination parameters for list operations",
+      "type": "object",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 100,
+          "default": 50,
+          "description": "Maximum number of items to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "anyOf": [
+    {
+      "required": [
+        "signal_spec"
+      ]
+    },
+    {
+      "required": [
+        "signal_ids"
+      ]
+    }
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.479Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/signals/get-signals-response.json b/schemas/cache/bundled/signals/get-signals-response.json
new file mode 100644
index 000000000..d0bc1f5ac
--- /dev/null
+++ b/schemas/cache/bundled/signals/get-signals-response.json
@@ -0,0 +1,639 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Signals Response",
+  "description": "Response payload for get_signals task",
+  "type": "object",
+  "properties": {
+    "signals": {
+      "type": "array",
+      "description": "Array of matching signals",
+      "items": {
+        "type": "object",
+        "properties": {
+          "signal_id": {
+            "title": "Signal ID",
+            "description": "Universal signal identifier referencing the data provider's catalog. Use this to verify authorization and look up signal definitions.",
+            "discriminator": {
+              "propertyName": "source"
+            },
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
+                "properties": {
+                  "source": {
+                    "type": "string",
+                    "const": "catalog",
+                    "description": "Discriminator indicating this signal is from a data provider's published catalog"
+                  },
+                  "data_provider_domain": {
+                    "type": "string",
+                    "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+                    "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
+                  }
+                },
+                "required": [
+                  "source",
+                  "data_provider_domain",
+                  "id"
+                ],
+                "additionalProperties": true
+              },
+              {
+                "type": "object",
+                "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
+                "properties": {
+                  "source": {
+                    "type": "string",
+                    "const": "agent",
+                    "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+                  },
+                  "agent_url": {
+                    "type": "string",
+                    "format": "uri",
+                    "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+                  },
+                  "id": {
+                    "type": "string",
+                    "pattern": "^[a-zA-Z0-9_-]+$",
+                    "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
+                  }
+                },
+                "required": [
+                  "source",
+                  "agent_url",
+                  "id"
+                ],
+                "additionalProperties": true
+              }
+            ]
+          },
+          "signal_agent_segment_id": {
+            "type": "string",
+            "description": "Opaque identifier used for activation. This is the signals agent's internal segment ID."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable signal name"
+          },
+          "description": {
+            "type": "string",
+            "description": "Detailed signal description"
+          },
+          "value_type": {
+            "title": "Signal Value Type",
+            "description": "The data type of this signal's values (binary, categorical, numeric)",
+            "type": "string",
+            "enum": [
+              "binary",
+              "categorical",
+              "numeric"
+            ],
+            "x-enum-descriptions": {
+              "binary": "Boolean signal - user either matches or doesn't (e.g., 'likely_tesla_buyers')",
+              "categorical": "Signal with discrete values from a defined set (e.g., 'vehicle_ownership' with values 'tesla', 'bmw', etc.)",
+              "numeric": "Signal with continuous numeric values within a range (e.g., 'purchase_propensity' from 0.0 to 1.0)"
+            }
+          },
+          "categories": {
+            "type": "array",
+            "description": "Valid values for categorical signals. Present when value_type is 'categorical'. Buyers must use one of these values in SignalTargeting.values.",
+            "items": {
+              "type": "string"
+            }
+          },
+          "range": {
+            "type": "object",
+            "description": "Valid range for numeric signals. Present when value_type is 'numeric'.",
+            "properties": {
+              "min": {
+                "type": "number",
+                "description": "Minimum value (inclusive)"
+              },
+              "max": {
+                "type": "number",
+                "description": "Maximum value (inclusive)"
+              }
+            },
+            "required": [
+              "min",
+              "max"
+            ],
+            "additionalProperties": false
+          },
+          "signal_type": {
+            "title": "Signal Catalog Type",
+            "description": "Catalog type of signal (marketplace, custom, owned)",
+            "type": "string",
+            "enum": [
+              "marketplace",
+              "custom",
+              "owned"
+            ],
+            "enumDescriptions": {
+              "marketplace": "Resold third-party segments (provider authorization verifiable via the provider's adagents.json)",
+              "custom": "Agent-native segment built on demand from models, composites, or buyer inputs \u2014 not attributable to a standing upstream provider",
+              "owned": "First-party segments derived from data the signal agent directly owns (retailer purchase data, publisher behavioral data, telco data)"
+            }
+          },
+          "data_provider": {
+            "type": "string",
+            "description": "Human-readable name of the data provider"
+          },
+          "coverage_percentage": {
+            "type": "number",
+            "description": "Percentage of audience coverage",
+            "minimum": 0,
+            "maximum": 100
+          },
+          "deployments": {
+            "type": "array",
+            "description": "Array of deployment targets",
+            "items": {
+              "title": "Deployment",
+              "description": "A signal deployment to a specific deployment target with activation status and key",
+              "oneOf": [
+                {
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "type": "string",
+                      "const": "platform",
+                      "description": "Discriminator indicating this is a platform-based deployment"
+                    },
+                    "platform": {
+                      "type": "string",
+                      "description": "Platform identifier for DSPs"
+                    },
+                    "account": {
+                      "type": "string",
+                      "description": "Account identifier if applicable"
+                    },
+                    "is_live": {
+                      "type": "boolean",
+                      "description": "Whether signal is currently active on this deployment"
+                    },
+                    "activation_key": {
+                      "title": "Activation Key",
+                      "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.",
+                      "type": "object",
+                      "oneOf": [
+                        {
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "segment_id",
+                              "description": "Segment ID based targeting"
+                            },
+                            "segment_id": {
+                              "type": "string",
+                              "description": "The platform-specific segment identifier to use in campaign targeting"
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "segment_id"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "key_value",
+                              "description": "Key-value pair based targeting"
+                            },
+                            "key": {
+                              "type": "string",
+                              "description": "The targeting parameter key"
+                            },
+                            "value": {
+                              "type": "string",
+                              "description": "The targeting parameter value"
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "key",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "estimated_activation_duration_minutes": {
+                      "type": "number",
+                      "description": "Estimated time to activate if not live, or to complete activation if in progress",
+                      "minimum": 0
+                    },
+                    "deployed_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "Timestamp when activation completed (if is_live=true)"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "platform",
+                    "is_live"
+                  ],
+                  "additionalProperties": true
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "type": {
+                      "type": "string",
+                      "const": "agent",
+                      "description": "Discriminator indicating this is an agent URL-based deployment"
+                    },
+                    "agent_url": {
+                      "type": "string",
+                      "format": "uri",
+                      "description": "URL identifying the deployment agent"
+                    },
+                    "account": {
+                      "type": "string",
+                      "description": "Account identifier if applicable"
+                    },
+                    "is_live": {
+                      "type": "boolean",
+                      "description": "Whether signal is currently active on this deployment"
+                    },
+                    "activation_key": {
+                      "title": "Activation Key",
+                      "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.",
+                      "type": "object",
+                      "oneOf": [
+                        {
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "segment_id",
+                              "description": "Segment ID based targeting"
+                            },
+                            "segment_id": {
+                              "type": "string",
+                              "description": "The platform-specific segment identifier to use in campaign targeting"
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "segment_id"
+                          ],
+                          "additionalProperties": true
+                        },
+                        {
+                          "properties": {
+                            "type": {
+                              "type": "string",
+                              "const": "key_value",
+                              "description": "Key-value pair based targeting"
+                            },
+                            "key": {
+                              "type": "string",
+                              "description": "The targeting parameter key"
+                            },
+                            "value": {
+                              "type": "string",
+                              "description": "The targeting parameter value"
+                            }
+                          },
+                          "required": [
+                            "type",
+                            "key",
+                            "value"
+                          ],
+                          "additionalProperties": true
+                        }
+                      ]
+                    },
+                    "estimated_activation_duration_minutes": {
+                      "type": "number",
+                      "description": "Estimated time to activate if not live, or to complete activation if in progress",
+                      "minimum": 0
+                    },
+                    "deployed_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "Timestamp when activation completed (if is_live=true)"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "agent_url",
+                    "is_live"
+                  ],
+                  "additionalProperties": true
+                }
+              ]
+            }
+          },
+          "pricing_options": {
+            "type": "array",
+            "description": "Pricing options available for this signal. The buyer selects one and passes its pricing_option_id in report_usage for billing verification.",
+            "items": {
+              "title": "Vendor Pricing Option",
+              "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+              "allOf": [
+                {
+                  "type": "object",
+                  "properties": {
+                    "pricing_option_id": {
+                      "type": "string",
+                      "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+                    }
+                  },
+                  "required": [
+                    "pricing_option_id"
+                  ]
+                },
+                {
+                  "title": "Vendor Pricing",
+                  "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+                  "type": "object",
+                  "oneOf": [
+                    {
+                      "title": "CpmPricing",
+                      "description": "Fixed cost per thousand impressions",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "cpm"
+                        },
+                        "cpm": {
+                          "type": "number",
+                          "description": "Cost per thousand impressions",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "cpm",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PercentOfMediaPricing",
+                      "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "percent_of_media"
+                        },
+                        "percent": {
+                          "type": "number",
+                          "description": "Percentage of media spend, e.g. 15 = 15%",
+                          "minimum": 0,
+                          "maximum": 100
+                        },
+                        "max_cpm": {
+                          "type": "number",
+                          "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code for the resulting charge",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "percent",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "FlatFeePricing",
+                      "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "flat_fee"
+                        },
+                        "amount": {
+                          "type": "number",
+                          "description": "Fixed charge for the billing period",
+                          "minimum": 0
+                        },
+                        "period": {
+                          "type": "string",
+                          "enum": [
+                            "monthly",
+                            "quarterly",
+                            "annual",
+                            "campaign"
+                          ],
+                          "description": "Billing period for the flat fee."
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "amount",
+                        "period",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    },
+                    {
+                      "title": "PerUnitPricing",
+                      "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+                      "type": "object",
+                      "properties": {
+                        "model": {
+                          "type": "string",
+                          "const": "per_unit"
+                        },
+                        "unit": {
+                          "type": "string",
+                          "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+                        },
+                        "unit_price": {
+                          "type": "number",
+                          "description": "Cost per one unit",
+                          "minimum": 0
+                        },
+                        "currency": {
+                          "type": "string",
+                          "description": "ISO 4217 currency code",
+                          "pattern": "^[A-Z]{3}$"
+                        },
+                        "ext": {
+                          "title": "Extension Object",
+                          "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+                          "type": "object",
+                          "additionalProperties": true
+                        }
+                      },
+                      "required": [
+                        "model",
+                        "unit",
+                        "unit_price",
+                        "currency"
+                      ],
+                      "additionalProperties": true
+                    }
+                  ]
+                }
+              ]
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "signal_id",
+          "signal_agent_segment_id",
+          "name",
+          "description",
+          "signal_type",
+          "data_provider",
+          "coverage_percentage",
+          "deployments",
+          "pricing_options"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings (e.g., signal discovery or pricing issues)",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "pagination": {
+      "title": "Pagination Response",
+      "description": "Standard cursor-based pagination metadata for list responses",
+      "type": "object",
+      "properties": {
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more results are available beyond this page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
+        },
+        "total_count": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
+        }
+      },
+      "required": [
+        "has_more"
+      ],
+      "additionalProperties": false
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "signals"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.481Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-get-offering-request.json b/schemas/cache/bundled/sponsored-intelligence/si-get-offering-request.json
new file mode 100644
index 000000000..8a17ae40b
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-get-offering-request.json
@@ -0,0 +1,48 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Get Offering Request",
+  "description": "Get offering details and availability before session handoff. Returns offering information, availability status, and optionally matching products based on context.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "offering_id": {
+      "type": "string",
+      "description": "Offering identifier from the catalog to get details for"
+    },
+    "context": {
+      "type": "string",
+      "description": "Optional natural language context about user intent for personalized results (e.g., 'mens size 14 near Cincinnati'). Must be anonymous - no PII."
+    },
+    "include_products": {
+      "type": "boolean",
+      "default": false,
+      "description": "Whether to include matching products in the response"
+    },
+    "product_limit": {
+      "type": "integer",
+      "minimum": 1,
+      "maximum": 50,
+      "default": 5,
+      "description": "Maximum number of matching products to return"
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "offering_id"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.482Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-get-offering-response.json b/schemas/cache/bundled/sponsored-intelligence/si-get-offering-response.json
new file mode 100644
index 000000000..128f78e33
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-get-offering-response.json
@@ -0,0 +1,202 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Get Offering Response",
+  "description": "Offering details, availability status, and optionally matching products. Use the offering_token in si_initiate_session for correlation.",
+  "type": "object",
+  "properties": {
+    "available": {
+      "type": "boolean",
+      "description": "Whether the offering is currently available"
+    },
+    "offering_token": {
+      "type": "string",
+      "description": "Token to pass to si_initiate_session for session continuity. Brand stores the full query context server-side (products shown, order, context) so they can resolve references like 'the second one' when the session starts."
+    },
+    "ttl_seconds": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "How long this offering information is valid (seconds). Host should re-fetch after TTL expires."
+    },
+    "checked_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this offering information was retrieved"
+    },
+    "offering": {
+      "type": "object",
+      "description": "Offering details",
+      "properties": {
+        "offering_id": {
+          "type": "string",
+          "description": "Offering identifier"
+        },
+        "title": {
+          "type": "string",
+          "description": "Offering title"
+        },
+        "summary": {
+          "type": "string",
+          "description": "Brief summary of the offering"
+        },
+        "tagline": {
+          "type": "string",
+          "description": "Short promotional tagline"
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When this offering expires"
+        },
+        "price_hint": {
+          "type": "string",
+          "description": "Price indication (e.g., 'from $199', '50% off')"
+        },
+        "image_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Hero image for the offering"
+        },
+        "landing_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Landing page URL"
+        }
+      },
+      "additionalProperties": true
+    },
+    "matching_products": {
+      "type": "array",
+      "description": "Products matching the request context. Only included if include_products was true.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "product_id": {
+            "type": "string",
+            "description": "Product identifier"
+          },
+          "name": {
+            "type": "string",
+            "description": "Product name"
+          },
+          "price": {
+            "type": "string",
+            "description": "Display price (e.g., '$129', '$89.99')"
+          },
+          "original_price": {
+            "type": "string",
+            "description": "Original price if on sale"
+          },
+          "image_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Product image"
+          },
+          "availability_summary": {
+            "type": "string",
+            "description": "Brief availability info (e.g., 'In stock', 'Size 14 available', '3 left')"
+          },
+          "url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Product detail page URL"
+          }
+        },
+        "required": [
+          "product_id",
+          "name"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "total_matching": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Total number of products matching the context (may be more than returned in matching_products)"
+    },
+    "unavailable_reason": {
+      "type": "string",
+      "description": "If not available, why (e.g., 'expired', 'sold_out', 'region_restricted')"
+    },
+    "alternative_offering_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Alternative offerings to consider if this one is unavailable"
+    },
+    "errors": {
+      "type": "array",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      },
+      "description": "Errors during offering lookup"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "available"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.483Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-initiate-session-request.json b/schemas/cache/bundled/sponsored-intelligence/si-initiate-session-request.json
new file mode 100644
index 000000000..caec2b7b2
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-initiate-session-request.json
@@ -0,0 +1,308 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Initiate Session Request",
+  "description": "Host initiates a session with a brand agent",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "context": {
+      "type": "string",
+      "description": "Conversation handoff from the host describing what the user needs"
+    },
+    "identity": {
+      "title": "SI Identity",
+      "description": "User identity shared with brand agent (with explicit consent)",
+      "type": "object",
+      "properties": {
+        "consent_granted": {
+          "type": "boolean",
+          "description": "Whether user consented to share identity"
+        },
+        "consent_timestamp": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When consent was granted (ISO 8601)"
+        },
+        "consent_scope": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "enum": [
+              "name",
+              "email",
+              "shipping_address",
+              "phone",
+              "locale"
+            ]
+          },
+          "description": "What data was consented to share"
+        },
+        "privacy_policy_acknowledged": {
+          "type": "object",
+          "description": "Brand privacy policy acknowledgment",
+          "properties": {
+            "brand_policy_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "URL to brand's privacy policy"
+            },
+            "brand_policy_version": {
+              "type": "string",
+              "description": "Version of policy acknowledged"
+            }
+          },
+          "additionalProperties": true
+        },
+        "user": {
+          "type": "object",
+          "description": "User data (only present if consent_granted is true)",
+          "properties": {
+            "email": {
+              "type": "string",
+              "format": "email",
+              "description": "User's email address"
+            },
+            "name": {
+              "type": "string",
+              "description": "User's display name"
+            },
+            "locale": {
+              "type": "string",
+              "description": "User's locale (e.g., en-US)"
+            },
+            "phone": {
+              "type": "string",
+              "description": "User's phone number"
+            },
+            "shipping_address": {
+              "type": "object",
+              "description": "User's shipping address for accurate pricing",
+              "properties": {
+                "street": {
+                  "type": "string"
+                },
+                "city": {
+                  "type": "string"
+                },
+                "state": {
+                  "type": "string"
+                },
+                "postal_code": {
+                  "type": "string"
+                },
+                "country": {
+                  "type": "string"
+                }
+              },
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "anonymous_session_id": {
+          "type": "string",
+          "description": "Session ID for anonymous users (when consent_granted is false)"
+        }
+      },
+      "required": [
+        "consent_granted"
+      ],
+      "additionalProperties": true
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "AdCP media buy ID if session was triggered by advertising"
+    },
+    "placement": {
+      "type": "string",
+      "description": "Where this session was triggered (e.g., 'chatgpt_search', 'claude_chat')"
+    },
+    "offering_id": {
+      "type": "string",
+      "description": "Brand-specific offering identifier to apply"
+    },
+    "supported_capabilities": {
+      "title": "SI Capabilities",
+      "description": "What capabilities the host supports",
+      "type": "object",
+      "properties": {
+        "modalities": {
+          "type": "object",
+          "description": "Interaction modalities supported",
+          "properties": {
+            "conversational": {
+              "type": "boolean",
+              "description": "Pure text exchange - the baseline modality",
+              "default": true
+            },
+            "voice": {
+              "oneOf": [
+                {
+                  "type": "boolean"
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "provider": {
+                      "type": "string",
+                      "description": "TTS provider (elevenlabs, openai, etc.)"
+                    },
+                    "voice_id": {
+                      "type": "string",
+                      "description": "Brand voice identifier"
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              ],
+              "description": "Audio-based interaction using brand voice"
+            },
+            "video": {
+              "oneOf": [
+                {
+                  "type": "boolean"
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "formats": {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      },
+                      "description": "Supported video formats (mp4, webm, etc.)"
+                    },
+                    "max_duration_seconds": {
+                      "type": "integer",
+                      "description": "Maximum video duration"
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              ],
+              "description": "Brand video content playback"
+            },
+            "avatar": {
+              "oneOf": [
+                {
+                  "type": "boolean"
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "provider": {
+                      "type": "string",
+                      "description": "Avatar provider (d-id, heygen, synthesia, etc.)"
+                    },
+                    "avatar_id": {
+                      "type": "string",
+                      "description": "Brand avatar identifier"
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              ],
+              "description": "Animated video presence with brand avatar"
+            }
+          },
+          "additionalProperties": true
+        },
+        "components": {
+          "type": "object",
+          "description": "Visual components supported",
+          "properties": {
+            "standard": {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "text",
+                  "link",
+                  "image",
+                  "product_card",
+                  "carousel",
+                  "action_button"
+                ]
+              },
+              "description": "Standard components that all SI hosts must render"
+            },
+            "extensions": {
+              "type": "object",
+              "description": "Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "commerce": {
+          "type": "object",
+          "description": "Commerce capabilities",
+          "properties": {
+            "acp_checkout": {
+              "type": "boolean",
+              "description": "Supports ACP (Agentic Commerce Protocol) checkout handoff"
+            }
+          },
+          "additionalProperties": true
+        },
+        "a2ui": {
+          "type": "object",
+          "description": "A2UI (Agent-to-UI) capabilities",
+          "properties": {
+            "supported": {
+              "type": "boolean",
+              "description": "Supports A2UI surface rendering",
+              "default": false
+            },
+            "catalogs": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"
+            }
+          },
+          "additionalProperties": true
+        },
+        "mcp_apps": {
+          "type": "boolean",
+          "description": "Supports MCP Apps for rendering A2UI surfaces in iframes",
+          "default": false
+        }
+      },
+      "additionalProperties": true
+    },
+    "offering_token": {
+      "type": "string",
+      "description": "Token from si_get_offering response for session continuity. Brand uses this to recall what products were shown to the user, enabling natural references like 'the second one' or 'that blue shoe'."
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate session creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "context",
+    "identity"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.483Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-initiate-session-response.json b/schemas/cache/bundled/sponsored-intelligence/si-initiate-session-response.json
new file mode 100644
index 000000000..1b60c39f0
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-initiate-session-response.json
@@ -0,0 +1,613 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Initiate Session Response",
+  "description": "Brand agent's response to session initiation",
+  "type": "object",
+  "properties": {
+    "session_id": {
+      "type": "string",
+      "description": "Unique session identifier for subsequent messages"
+    },
+    "response": {
+      "type": "object",
+      "description": "Brand agent's initial response",
+      "properties": {
+        "message": {
+          "type": "string",
+          "description": "Conversational message from brand agent"
+        },
+        "ui_elements": {
+          "type": "array",
+          "items": {
+            "title": "SI UI Element",
+            "description": "Standard visual component that brand returns and host renders",
+            "type": "object",
+            "properties": {
+              "type": {
+                "type": "string",
+                "enum": [
+                  "text",
+                  "link",
+                  "image",
+                  "product_card",
+                  "carousel",
+                  "action_button",
+                  "app_handoff",
+                  "integration_actions"
+                ],
+                "description": "Component type"
+              },
+              "data": {
+                "type": "object",
+                "description": "Component-specific data",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "type"
+            ],
+            "additionalProperties": true,
+            "allOf": [
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "text"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "message": {
+                          "type": "string",
+                          "description": "Text message content"
+                        }
+                      },
+                      "required": [
+                        "message"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "link"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Link URL"
+                        },
+                        "label": {
+                          "type": "string",
+                          "description": "Link text"
+                        },
+                        "preview": {
+                          "type": "boolean",
+                          "description": "Show link preview"
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "label"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "image"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Image URL"
+                        },
+                        "alt": {
+                          "type": "string",
+                          "description": "Alt text"
+                        },
+                        "caption": {
+                          "type": "string",
+                          "description": "Image caption"
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "alt"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "product_card"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "title": {
+                          "type": "string",
+                          "description": "Product title"
+                        },
+                        "subtitle": {
+                          "type": "string",
+                          "description": "Product subtitle"
+                        },
+                        "price": {
+                          "type": "string",
+                          "description": "Price display string"
+                        },
+                        "image_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Product image"
+                        },
+                        "description": {
+                          "type": "string",
+                          "description": "Product description"
+                        },
+                        "badge": {
+                          "type": "string",
+                          "description": "Badge text (e.g., 'Free Upgrade')"
+                        },
+                        "cta": {
+                          "type": "object",
+                          "properties": {
+                            "label": {
+                              "type": "string"
+                            },
+                            "action": {
+                              "type": "string"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "title",
+                        "price"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "carousel"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "title": {
+                          "type": "string",
+                          "description": "Carousel title"
+                        },
+                        "items": {
+                          "type": "array",
+                          "description": "Carousel items (product cards or images)",
+                          "items": {
+                            "type": "object"
+                          }
+                        }
+                      },
+                      "required": [
+                        "items"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "action_button"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "label": {
+                          "type": "string",
+                          "description": "Button label"
+                        },
+                        "action": {
+                          "type": "string",
+                          "description": "Action identifier (e.g., 'acp_checkout')"
+                        },
+                        "payload": {
+                          "type": "object",
+                          "description": "Action payload"
+                        }
+                      },
+                      "required": [
+                        "label",
+                        "action"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "app_handoff"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "apps": {
+                      "type": "object",
+                      "description": "Platform-specific app handoff targets",
+                      "additionalProperties": {
+                        "type": "object",
+                        "properties": {
+                          "app_id": {
+                            "type": "string"
+                          },
+                          "deep_link": {
+                            "type": "string"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri"
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "integration_actions"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "actions": {
+                          "type": "array",
+                          "description": "Available integration actions",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "type": {
+                                "type": "string",
+                                "enum": [
+                                  "mcp",
+                                  "a2a"
+                                ],
+                                "description": "Integration type"
+                              },
+                              "label": {
+                                "type": "string",
+                                "description": "User-facing button label"
+                              },
+                              "highlighted": {
+                                "type": "boolean",
+                                "description": "Whether this action should be visually emphasized"
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL for the integration endpoint"
+                              }
+                            },
+                            "required": [
+                              "type",
+                              "label"
+                            ]
+                          }
+                        }
+                      },
+                      "required": [
+                        "actions"
+                      ]
+                    }
+                  }
+                }
+              }
+            ]
+          },
+          "description": "Visual components to render"
+        }
+      },
+      "additionalProperties": true
+    },
+    "negotiated_capabilities": {
+      "title": "SI Capabilities",
+      "description": "Intersection of brand and host capabilities for this session",
+      "type": "object",
+      "properties": {
+        "modalities": {
+          "type": "object",
+          "description": "Interaction modalities supported",
+          "properties": {
+            "conversational": {
+              "type": "boolean",
+              "description": "Pure text exchange - the baseline modality",
+              "default": true
+            },
+            "voice": {
+              "oneOf": [
+                {
+                  "type": "boolean"
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "provider": {
+                      "type": "string",
+                      "description": "TTS provider (elevenlabs, openai, etc.)"
+                    },
+                    "voice_id": {
+                      "type": "string",
+                      "description": "Brand voice identifier"
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              ],
+              "description": "Audio-based interaction using brand voice"
+            },
+            "video": {
+              "oneOf": [
+                {
+                  "type": "boolean"
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "formats": {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      },
+                      "description": "Supported video formats (mp4, webm, etc.)"
+                    },
+                    "max_duration_seconds": {
+                      "type": "integer",
+                      "description": "Maximum video duration"
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              ],
+              "description": "Brand video content playback"
+            },
+            "avatar": {
+              "oneOf": [
+                {
+                  "type": "boolean"
+                },
+                {
+                  "type": "object",
+                  "properties": {
+                    "provider": {
+                      "type": "string",
+                      "description": "Avatar provider (d-id, heygen, synthesia, etc.)"
+                    },
+                    "avatar_id": {
+                      "type": "string",
+                      "description": "Brand avatar identifier"
+                    }
+                  },
+                  "additionalProperties": true
+                }
+              ],
+              "description": "Animated video presence with brand avatar"
+            }
+          },
+          "additionalProperties": true
+        },
+        "components": {
+          "type": "object",
+          "description": "Visual components supported",
+          "properties": {
+            "standard": {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "text",
+                  "link",
+                  "image",
+                  "product_card",
+                  "carousel",
+                  "action_button"
+                ]
+              },
+              "description": "Standard components that all SI hosts must render"
+            },
+            "extensions": {
+              "type": "object",
+              "description": "Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        },
+        "commerce": {
+          "type": "object",
+          "description": "Commerce capabilities",
+          "properties": {
+            "acp_checkout": {
+              "type": "boolean",
+              "description": "Supports ACP (Agentic Commerce Protocol) checkout handoff"
+            }
+          },
+          "additionalProperties": true
+        },
+        "a2ui": {
+          "type": "object",
+          "description": "A2UI (Agent-to-UI) capabilities",
+          "properties": {
+            "supported": {
+              "type": "boolean",
+              "description": "Supports A2UI surface rendering",
+              "default": false
+            },
+            "catalogs": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"
+            }
+          },
+          "additionalProperties": true
+        },
+        "mcp_apps": {
+          "type": "boolean",
+          "description": "Supports MCP Apps for rendering A2UI surfaces in iframes",
+          "default": false
+        }
+      },
+      "additionalProperties": true
+    },
+    "session_status": {
+      "title": "SI Session Status",
+      "description": "Current session lifecycle state. Returned in initiation, message, and termination responses.",
+      "type": "string",
+      "enum": [
+        "active",
+        "pending_handoff",
+        "complete",
+        "terminated"
+      ],
+      "enumDescriptions": {
+        "active": "Session is in progress and accepting messages",
+        "pending_handoff": "Brand agent is requesting handoff to a commerce or external flow; host should process the handoff object",
+        "complete": "Session ended normally after successful conversation or handoff",
+        "terminated": "Session was ended due to timeout, error, policy violation, or explicit host/user action"
+      }
+    },
+    "session_ttl_seconds": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Session inactivity timeout in seconds. After this duration without a message, the brand agent may terminate the session. Hosts SHOULD warn users before timeout when possible."
+    },
+    "errors": {
+      "type": "array",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      },
+      "description": "Errors during session initiation"
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "session_id",
+    "session_status"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.484Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-send-message-request.json b/schemas/cache/bundled/sponsored-intelligence/si-send-message-request.json
new file mode 100644
index 000000000..40035f50a
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-send-message-request.json
@@ -0,0 +1,77 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Send Message Request",
+  "description": "Send a message to the brand agent within an active session",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. Each conversational turn is a distinct mutation of session transcript \u2014 without this key, a timeout-and-retry produces a duplicate turn and a duplicate model response. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each user turn.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "session_id": {
+      "type": "string",
+      "description": "Active session identifier"
+    },
+    "message": {
+      "type": "string",
+      "description": "User's message to the brand agent"
+    },
+    "action_response": {
+      "type": "object",
+      "description": "Response to a previous action_button (e.g., user clicked checkout)",
+      "properties": {
+        "action": {
+          "type": "string",
+          "description": "The action that was triggered"
+        },
+        "payload": {
+          "type": "object",
+          "description": "Action-specific response data"
+        }
+      },
+      "additionalProperties": true
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "session_id"
+  ],
+  "anyOf": [
+    {
+      "required": [
+        "message"
+      ]
+    },
+    {
+      "required": [
+        "action_response"
+      ]
+    }
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.485Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-send-message-response.json b/schemas/cache/bundled/sponsored-intelligence/si-send-message-response.json
new file mode 100644
index 000000000..5384ae9fa
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-send-message-response.json
@@ -0,0 +1,585 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Send Message Response",
+  "description": "Brand agent's response to a user message",
+  "type": "object",
+  "properties": {
+    "session_id": {
+      "type": "string",
+      "description": "Session identifier"
+    },
+    "response": {
+      "type": "object",
+      "description": "Brand agent's response",
+      "properties": {
+        "message": {
+          "type": "string",
+          "description": "Conversational message from brand agent"
+        },
+        "surface": {
+          "title": "A2UI Surface",
+          "description": "A2UI surface with interactive components",
+          "type": "object",
+          "properties": {
+            "surfaceId": {
+              "type": "string",
+              "description": "Unique identifier for this surface"
+            },
+            "catalogId": {
+              "type": "string",
+              "description": "Component catalog to use for rendering",
+              "default": "standard"
+            },
+            "components": {
+              "type": "array",
+              "description": "Flat list of components (adjacency list structure)",
+              "items": {
+                "title": "A2UI Component",
+                "description": "A component in an A2UI surface",
+                "type": "object",
+                "properties": {
+                  "id": {
+                    "type": "string",
+                    "description": "Unique identifier for this component within the surface"
+                  },
+                  "parentId": {
+                    "type": "string",
+                    "description": "ID of the parent component (null for root)"
+                  },
+                  "component": {
+                    "type": "object",
+                    "description": "Component definition (keyed by component type)",
+                    "minProperties": 1,
+                    "maxProperties": 1,
+                    "additionalProperties": {
+                      "type": "object",
+                      "description": "Component properties"
+                    }
+                  }
+                },
+                "required": [
+                  "id",
+                  "component"
+                ],
+                "additionalProperties": true
+              }
+            },
+            "rootId": {
+              "type": "string",
+              "description": "ID of the root component (if not specified, first component is root)"
+            },
+            "dataModel": {
+              "type": "object",
+              "description": "Application data that components can bind to",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "surfaceId",
+            "components"
+          ],
+          "additionalProperties": true
+        },
+        "ui_elements": {
+          "type": "array",
+          "items": {
+            "title": "SI UI Element",
+            "description": "Standard visual component that brand returns and host renders",
+            "type": "object",
+            "properties": {
+              "type": {
+                "type": "string",
+                "enum": [
+                  "text",
+                  "link",
+                  "image",
+                  "product_card",
+                  "carousel",
+                  "action_button",
+                  "app_handoff",
+                  "integration_actions"
+                ],
+                "description": "Component type"
+              },
+              "data": {
+                "type": "object",
+                "description": "Component-specific data",
+                "additionalProperties": true
+              }
+            },
+            "required": [
+              "type"
+            ],
+            "additionalProperties": true,
+            "allOf": [
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "text"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "message": {
+                          "type": "string",
+                          "description": "Text message content"
+                        }
+                      },
+                      "required": [
+                        "message"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "link"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Link URL"
+                        },
+                        "label": {
+                          "type": "string",
+                          "description": "Link text"
+                        },
+                        "preview": {
+                          "type": "boolean",
+                          "description": "Show link preview"
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "label"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "image"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Image URL"
+                        },
+                        "alt": {
+                          "type": "string",
+                          "description": "Alt text"
+                        },
+                        "caption": {
+                          "type": "string",
+                          "description": "Image caption"
+                        }
+                      },
+                      "required": [
+                        "url",
+                        "alt"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "product_card"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "title": {
+                          "type": "string",
+                          "description": "Product title"
+                        },
+                        "subtitle": {
+                          "type": "string",
+                          "description": "Product subtitle"
+                        },
+                        "price": {
+                          "type": "string",
+                          "description": "Price display string"
+                        },
+                        "image_url": {
+                          "type": "string",
+                          "format": "uri",
+                          "description": "Product image"
+                        },
+                        "description": {
+                          "type": "string",
+                          "description": "Product description"
+                        },
+                        "badge": {
+                          "type": "string",
+                          "description": "Badge text (e.g., 'Free Upgrade')"
+                        },
+                        "cta": {
+                          "type": "object",
+                          "properties": {
+                            "label": {
+                              "type": "string"
+                            },
+                            "action": {
+                              "type": "string"
+                            }
+                          }
+                        }
+                      },
+                      "required": [
+                        "title",
+                        "price"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "carousel"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "title": {
+                          "type": "string",
+                          "description": "Carousel title"
+                        },
+                        "items": {
+                          "type": "array",
+                          "description": "Carousel items (product cards or images)",
+                          "items": {
+                            "type": "object"
+                          }
+                        }
+                      },
+                      "required": [
+                        "items"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "action_button"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "label": {
+                          "type": "string",
+                          "description": "Button label"
+                        },
+                        "action": {
+                          "type": "string",
+                          "description": "Action identifier (e.g., 'acp_checkout')"
+                        },
+                        "payload": {
+                          "type": "object",
+                          "description": "Action payload"
+                        }
+                      },
+                      "required": [
+                        "label",
+                        "action"
+                      ]
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "app_handoff"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "apps": {
+                      "type": "object",
+                      "description": "Platform-specific app handoff targets",
+                      "additionalProperties": {
+                        "type": "object",
+                        "properties": {
+                          "app_id": {
+                            "type": "string"
+                          },
+                          "deep_link": {
+                            "type": "string"
+                          },
+                          "url": {
+                            "type": "string",
+                            "format": "uri"
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "if": {
+                  "properties": {
+                    "type": {
+                      "const": "integration_actions"
+                    }
+                  }
+                },
+                "then": {
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "properties": {
+                        "actions": {
+                          "type": "array",
+                          "description": "Available integration actions",
+                          "items": {
+                            "type": "object",
+                            "properties": {
+                              "type": {
+                                "type": "string",
+                                "enum": [
+                                  "mcp",
+                                  "a2a"
+                                ],
+                                "description": "Integration type"
+                              },
+                              "label": {
+                                "type": "string",
+                                "description": "User-facing button label"
+                              },
+                              "highlighted": {
+                                "type": "boolean",
+                                "description": "Whether this action should be visually emphasized"
+                              },
+                              "url": {
+                                "type": "string",
+                                "format": "uri",
+                                "description": "URL for the integration endpoint"
+                              }
+                            },
+                            "required": [
+                              "type",
+                              "label"
+                            ]
+                          }
+                        }
+                      },
+                      "required": [
+                        "actions"
+                      ]
+                    }
+                  }
+                }
+              }
+            ]
+          },
+          "description": "Visual components to render (DEPRECATED: use surface instead)",
+          "deprecated": true
+        }
+      },
+      "additionalProperties": true
+    },
+    "mcp_resource_uri": {
+      "type": "string",
+      "description": "MCP resource URI for hosts with MCP Apps support (e.g., ui://si/session-abc123)"
+    },
+    "session_status": {
+      "title": "SI Session Status",
+      "description": "Current session status. On a successful response, one of: active, pending_handoff, or complete. Terminated sessions return error codes (SESSION_NOT_FOUND or SESSION_TERMINATED) instead of a success response.",
+      "type": "string",
+      "enum": [
+        "active",
+        "pending_handoff",
+        "complete",
+        "terminated"
+      ],
+      "enumDescriptions": {
+        "active": "Session is in progress and accepting messages",
+        "pending_handoff": "Brand agent is requesting handoff to a commerce or external flow; host should process the handoff object",
+        "complete": "Session ended normally after successful conversation or handoff",
+        "terminated": "Session was ended due to timeout, error, policy violation, or explicit host/user action"
+      }
+    },
+    "handoff": {
+      "type": "object",
+      "description": "Handoff request when session_status is pending_handoff",
+      "properties": {
+        "type": {
+          "type": "string",
+          "enum": [
+            "transaction",
+            "complete"
+          ],
+          "description": "Type of handoff: transaction (ready for ACP checkout) or complete (conversation done)"
+        },
+        "intent": {
+          "type": "object",
+          "description": "For transaction handoffs: what the user wants to purchase",
+          "properties": {
+            "action": {
+              "type": "string",
+              "description": "The commerce action (e.g., 'purchase')"
+            },
+            "product": {
+              "type": "object",
+              "description": "Product details for checkout"
+            },
+            "price": {
+              "type": "object",
+              "description": "Price information",
+              "properties": {
+                "amount": {
+                  "type": "number"
+                },
+                "currency": {
+                  "type": "string"
+                }
+              }
+            }
+          },
+          "additionalProperties": true
+        },
+        "context_for_checkout": {
+          "type": "object",
+          "description": "Context to pass to ACP for seamless checkout",
+          "properties": {
+            "conversation_summary": {
+              "type": "string",
+              "description": "Summary of the conversation leading to purchase"
+            },
+            "applied_offers": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Offer IDs that were applied during the conversation"
+            }
+          },
+          "additionalProperties": true
+        }
+      },
+      "additionalProperties": true
+    },
+    "errors": {
+      "type": "array",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "session_id",
+    "session_status"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.486Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-terminate-session-request.json b/schemas/cache/bundled/sponsored-intelligence/si-terminate-session-request.json
new file mode 100644
index 000000000..bde96d14a
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-terminate-session-request.json
@@ -0,0 +1,83 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Terminate Session Request",
+  "description": "Request to terminate an SI session. Naturally idempotent \u2014 `session_id` is the dedup boundary, and terminating an already-terminated session is a no-op that returns the same terminal state. No `idempotency_key` is needed on this request.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "session_id": {
+      "type": "string",
+      "description": "Session identifier to terminate"
+    },
+    "reason": {
+      "type": "string",
+      "enum": [
+        "handoff_transaction",
+        "handoff_complete",
+        "user_exit",
+        "session_timeout",
+        "host_terminated"
+      ],
+      "description": "Reason for termination"
+    },
+    "termination_context": {
+      "type": "object",
+      "description": "Context for the termination",
+      "properties": {
+        "summary": {
+          "type": "string",
+          "description": "Summary of the conversation"
+        },
+        "transaction_intent": {
+          "type": "object",
+          "description": "For handoff_transaction - what user wants to buy",
+          "properties": {
+            "action": {
+              "type": "string",
+              "enum": [
+                "purchase",
+                "subscribe"
+              ]
+            },
+            "product": {
+              "type": "object",
+              "description": "Product/service details"
+            }
+          },
+          "additionalProperties": true
+        },
+        "cause": {
+          "type": "string",
+          "description": "For host_terminated - why host ended session"
+        }
+      },
+      "additionalProperties": true
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "session_id",
+    "reason"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.487Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/bundled/sponsored-intelligence/si-terminate-session-response.json b/schemas/cache/bundled/sponsored-intelligence/si-terminate-session-response.json
new file mode 100644
index 000000000..8d11b251b
--- /dev/null
+++ b/schemas/cache/bundled/sponsored-intelligence/si-terminate-session-response.json
@@ -0,0 +1,153 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Terminate Session Response",
+  "description": "Confirmation of session termination",
+  "type": "object",
+  "properties": {
+    "session_id": {
+      "type": "string",
+      "description": "Terminated session identifier"
+    },
+    "terminated": {
+      "type": "boolean",
+      "description": "Whether session was successfully terminated"
+    },
+    "session_status": {
+      "title": "SI Session Status",
+      "description": "Resulting session state. 'complete' for handoff_transaction/handoff_complete, 'terminated' for user_exit/session_timeout/host_terminated.",
+      "type": "string",
+      "enum": [
+        "active",
+        "pending_handoff",
+        "complete",
+        "terminated"
+      ],
+      "enumDescriptions": {
+        "active": "Session is in progress and accepting messages",
+        "pending_handoff": "Brand agent is requesting handoff to a commerce or external flow; host should process the handoff object",
+        "complete": "Session ended normally after successful conversation or handoff",
+        "terminated": "Session was ended due to timeout, error, policy violation, or explicit host/user action"
+      }
+    },
+    "acp_handoff": {
+      "type": "object",
+      "description": "ACP checkout handoff data. Present when reason is handoff_transaction.",
+      "properties": {
+        "checkout_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Brand's ACP checkout endpoint. Hosts MUST validate this is HTTPS before opening."
+        },
+        "checkout_token": {
+          "type": "string",
+          "description": "Opaque token for the checkout flow. The host passes this to the checkout endpoint to correlate the SI session with the transaction."
+        },
+        "payload": {
+          "type": "object",
+          "description": "Rich checkout context to pass to the ACP endpoint (product details, applied offers, pricing). Alternative to checkout_token for integrations that need structured data.",
+          "additionalProperties": true
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When this handoff data expires. Hosts should initiate checkout before this time."
+        }
+      },
+      "additionalProperties": true
+    },
+    "follow_up": {
+      "type": "object",
+      "description": "Suggested follow-up actions",
+      "properties": {
+        "action": {
+          "type": "string",
+          "enum": [
+            "save_for_later",
+            "set_reminder",
+            "subscribe_updates",
+            "none"
+          ]
+        },
+        "data": {
+          "type": "object",
+          "description": "Data for follow-up action"
+        }
+      },
+      "additionalProperties": true
+    },
+    "errors": {
+      "type": "array",
+      "items": {
+        "title": "Error",
+        "description": "Standard error structure for task-specific errors and warnings",
+        "type": "object",
+        "properties": {
+          "code": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 64,
+            "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
+          },
+          "message": {
+            "type": "string",
+            "description": "Human-readable error message"
+          },
+          "field": {
+            "type": "string",
+            "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix for the error"
+          },
+          "retry_after": {
+            "type": "number",
+            "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+            "minimum": 1,
+            "maximum": 3600
+          },
+          "details": {
+            "type": "object",
+            "description": "Additional task-specific error details",
+            "additionalProperties": true
+          },
+          "recovery": {
+            "type": "string",
+            "enum": [
+              "transient",
+              "correctable",
+              "terminal"
+            ],
+            "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "context": {
+      "title": "Context Object",
+      "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+      "type": "object",
+      "additionalProperties": true
+    },
+    "ext": {
+      "title": "Extension Object",
+      "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+      "type": "object",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "session_id",
+    "terminated"
+  ],
+  "additionalProperties": true,
+  "_bundled": {
+    "generatedAt": "2026-04-18T19:54:51.487Z",
+    "note": "This is a bundled schema with all $ref resolved inline. For the modular version with references, use the parent directory."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/collection-list-changed-webhook.json b/schemas/cache/collection/collection-list-changed-webhook.json
index 765123546..8cb6ecbab 100644
--- a/schemas/cache/collection/collection-list-changed-webhook.json
+++ b/schemas/cache/collection/collection-list-changed-webhook.json
@@ -48,7 +48,7 @@
     },
     "signature": {
       "type": "string",
-      "description": "Cryptographic signature of the webhook payload, signed with the agent's private key. Recipients MUST verify this signature."
+      "description": "HMAC-SHA256 webhook signature over {unix_timestamp}.{raw_http_body_bytes} using the secret exchanged out-of-band when the seller registered with the governance agent. Recipients MUST verify against the X-ADCP-Signature and X-ADCP-Timestamp headers using timing-safe comparison and MUST reject requests where |now - timestamp| > 300 seconds. The body copy of this field is a convenience only \u2014 the headers are authoritative. See docs/building/implementation/security#webhook-security."
     },
     "ext": {
       "$ref": "../core/ext.json"
diff --git a/schemas/cache/collection/create-collection-list-request.json b/schemas/cache/collection/create-collection-list-request.json
index 567615e77..c1ae718ff 100644
--- a/schemas/cache/collection/create-collection-list-request.json
+++ b/schemas/cache/collection/create-collection-list-request.json
@@ -38,7 +38,8 @@
       "type": "string",
       "description": "Client-generated unique key for this request. Prevents duplicate collection list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
       "minLength": 16,
-      "maxLength": 255
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
     "context": {
       "$ref": "../core/context.json"
@@ -48,6 +49,7 @@
     }
   },
   "required": [
+    "idempotency_key",
     "name"
   ],
   "additionalProperties": false
diff --git a/schemas/cache/collection/create-collection-list-response.json b/schemas/cache/collection/create-collection-list-response.json
index ca177f926..0acfb0e8b 100644
--- a/schemas/cache/collection/create-collection-list-response.json
+++ b/schemas/cache/collection/create-collection-list-response.json
@@ -10,7 +10,10 @@
     },
     "auth_token": {
       "type": "string",
-      "description": "Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time."
+      "description": "Token that authorizes sellers to fetch this list via get_collection_list. Only returned at creation time \u2014 buyers MUST store it in a secret manager. Scoped to this one list_id; MUST NOT be reused across lists. Governance agents MUST issue a distinct token per seller so per-relationship revocation is possible. Tokens MUST NOT be logged, appear in cache keys, or echo in error responses. delete_collection_list MUST revoke the token immediately; compromise-driven revocation MUST also signal cache invalidation to sellers (reduced cache_valid_until or a list-changed webhook). See Security considerations in docs/governance/collection/tasks/collection_lists."
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
diff --git a/schemas/cache/collection/delete-collection-list-request.json b/schemas/cache/collection/delete-collection-list-request.json
index 5b6a1c374..4bace96b9 100644
--- a/schemas/cache/collection/delete-collection-list-request.json
+++ b/schemas/cache/collection/delete-collection-list-request.json
@@ -24,10 +24,12 @@
       "type": "string",
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
       "minLength": 16,
-      "maxLength": 255
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     }
   },
   "required": [
+    "idempotency_key",
     "list_id"
   ],
   "additionalProperties": false
diff --git a/schemas/cache/collection/delete-collection-list-response.json b/schemas/cache/collection/delete-collection-list-response.json
index b0c11e1ba..47abeb45c 100644
--- a/schemas/cache/collection/delete-collection-list-response.json
+++ b/schemas/cache/collection/delete-collection-list-response.json
@@ -12,6 +12,9 @@
       "type": "string",
       "description": "ID of the deleted list"
     },
+    "context": {
+      "$ref": "../core/context.json"
+    },
     "ext": {
       "$ref": "../core/ext.json"
     }
diff --git a/schemas/cache/collection/get-collection-list-response.json b/schemas/cache/collection/get-collection-list-response.json
index db2b47b54..3c639bda3 100644
--- a/schemas/cache/collection/get-collection-list-response.json
+++ b/schemas/cache/collection/get-collection-list-response.json
@@ -114,6 +114,9 @@
         }
       }
     },
+    "context": {
+      "$ref": "../core/context.json"
+    },
     "ext": {
       "$ref": "../core/ext.json"
     }
diff --git a/schemas/cache/collection/list-collection-lists-response.json b/schemas/cache/collection/list-collection-lists-response.json
index 949a7874f..3786b8169 100644
--- a/schemas/cache/collection/list-collection-lists-response.json
+++ b/schemas/cache/collection/list-collection-lists-response.json
@@ -14,6 +14,9 @@
     "pagination": {
       "$ref": "../core/pagination-response.json"
     },
+    "context": {
+      "$ref": "../core/context.json"
+    },
     "ext": {
       "$ref": "../core/ext.json"
     }
diff --git a/schemas/cache/collection/update-collection-list-request.json b/schemas/cache/collection/update-collection-list-request.json
index f777aceae..a3c849b21 100644
--- a/schemas/cache/collection/update-collection-list-request.json
+++ b/schemas/cache/collection/update-collection-list-request.json
@@ -40,7 +40,7 @@
     "webhook_url": {
       "type": "string",
       "format": "uri",
-      "description": "Update the webhook URL for list change notifications (set to empty string to remove)"
+      "description": "Update the webhook URL for list change notifications (set to empty string to remove). Governance agents MUST validate this URL against SSRF per docs/building/implementation/security#webhook-url-validation-ssrf."
     },
     "context": {
       "$ref": "../core/context.json"
@@ -52,10 +52,12 @@
       "type": "string",
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
       "minLength": 16,
-      "maxLength": 255
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     }
   },
   "required": [
+    "idempotency_key",
     "list_id"
   ],
   "additionalProperties": false
diff --git a/schemas/cache/collection/update-collection-list-response.json b/schemas/cache/collection/update-collection-list-response.json
index a9bbe5cdd..6320a95d2 100644
--- a/schemas/cache/collection/update-collection-list-response.json
+++ b/schemas/cache/collection/update-collection-list-response.json
@@ -8,6 +8,9 @@
       "$ref": "collection-list.json",
       "description": "The updated collection list"
     },
+    "context": {
+      "$ref": "../core/context.json"
+    },
     "ext": {
       "$ref": "../core/ext.json"
     }
diff --git a/schemas/cache/compliance/comply-test-controller-request.json b/schemas/cache/compliance/comply-test-controller-request.json
index 181ac30df..89cd19557 100644
--- a/schemas/cache/compliance/comply-test-controller-request.json
+++ b/schemas/cache/compliance/comply-test-controller-request.json
@@ -1,392 +1,338 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Comply Test Controller Request",
   "description": "Request payload for the comply_test_controller tool. Triggers seller-side state transitions for compliance testing. Sandbox only \u2014 sellers MUST NOT expose this tool in production.",
-  "examples": [
-    {
-      "data": {
-        "scenario": "list_scenarios"
-      },
-      "description": "List supported scenarios"
+  "type": "object",
+  "properties": {
+    "scenario": {
+      "type": "string",
+      "enum": [
+        "list_scenarios",
+        "force_creative_status",
+        "force_account_status",
+        "force_media_buy_status",
+        "force_session_status",
+        "simulate_delivery",
+        "simulate_budget_spend"
+      ],
+      "description": "Test scenario to execute. 'list_scenarios' discovers supported scenarios. Others trigger state transitions for the specified domain."
     },
-    {
-      "data": {
-        "params": {
-          "creative_id": "cr-123",
-          "rejection_reason": "Brand safety policy violation",
-          "status": "rejected"
+    "params": {
+      "type": "object",
+      "description": "Scenario-specific parameters. Required for all scenarios except list_scenarios.",
+      "properties": {
+        "creative_id": {
+          "type": "string",
+          "description": "Creative to transition. Used by force_creative_status."
+        },
+        "account_id": {
+          "type": "string",
+          "description": "Account to transition. Used by force_account_status and simulate_budget_spend."
         },
-        "scenario": "force_creative_status"
+        "media_buy_id": {
+          "type": "string",
+          "description": "Media buy to transition. Used by force_media_buy_status, simulate_delivery, and simulate_budget_spend."
+        },
+        "session_id": {
+          "type": "string",
+          "description": "Session to transition. Used by force_session_status."
+        },
+        "status": {
+          "type": "string",
+          "description": "Target status for the resource. Type depends on scenario: creative-status for force_creative_status, account-status for force_account_status, media-buy-status for force_media_buy_status. For force_session_status, must be 'complete' or 'terminated'."
+        },
+        "rejection_reason": {
+          "type": "string",
+          "description": "Reason for rejection. Used by force_creative_status and force_media_buy_status when status = rejected."
+        },
+        "termination_reason": {
+          "type": "string",
+          "description": "Reason for termination (e.g., session_timeout, host_terminated, policy_violation). Used by force_session_status when status = terminated."
+        },
+        "impressions": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Impressions to simulate. Used by simulate_delivery."
+        },
+        "clicks": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Clicks to simulate. Used by simulate_delivery."
+        },
+        "conversions": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Conversions to simulate. Used by simulate_delivery."
+        },
+        "reported_spend": {
+          "type": "object",
+          "description": "Spend as reported in delivery data. Does not affect budget. Used by simulate_delivery.",
+          "properties": {
+            "amount": {
+              "type": "number",
+              "minimum": 0
+            },
+            "currency": {
+              "type": "string",
+              "pattern": "^[A-Z]{3}$"
+            }
+          },
+          "required": [
+            "amount",
+            "currency"
+          ]
+        },
+        "spend_percentage": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 100,
+          "description": "Spend to this percentage of budget (0\u2013100). Used by simulate_budget_spend."
+        }
       },
-      "description": "Force a creative to rejected status"
+      "additionalProperties": true
     },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "scenario"
+  ],
+  "allOf": [
     {
-      "data": {
-        "params": {
-          "account_id": "acct-456",
-          "status": "suspended"
-        },
-        "scenario": "force_account_status"
+      "if": {
+        "properties": {
+          "scenario": {
+            "const": "force_creative_status"
+          }
+        }
       },
-      "description": "Force account suspension"
+      "then": {
+        "required": [
+          "params"
+        ],
+        "properties": {
+          "params": {
+            "required": [
+              "creative_id",
+              "status"
+            ],
+            "properties": {
+              "status": {
+                "$ref": "../enums/creative-status.json"
+              }
+            }
+          }
+        }
+      }
     },
     {
-      "data": {
-        "params": {
-          "session_id": "sess-abc",
-          "status": "terminated",
-          "termination_reason": "session_timeout"
-        },
-        "scenario": "force_session_status"
+      "if": {
+        "properties": {
+          "scenario": {
+            "const": "force_account_status"
+          }
+        }
       },
-      "description": "Simulate session timeout"
+      "then": {
+        "required": [
+          "params"
+        ],
+        "properties": {
+          "params": {
+            "required": [
+              "account_id",
+              "status"
+            ],
+            "properties": {
+              "status": {
+                "$ref": "../enums/account-status.json"
+              }
+            }
+          }
+        }
+      }
     },
     {
-      "data": {
-        "params": {
-          "clicks": 150,
-          "impressions": 10000,
-          "media_buy_id": "mb-789",
-          "reported_spend": {
-            "amount": 150.0,
-            "currency": "USD"
+      "if": {
+        "properties": {
+          "scenario": {
+            "const": "force_media_buy_status"
           }
-        },
-        "scenario": "simulate_delivery"
+        }
       },
-      "description": "Simulate delivery data"
+      "then": {
+        "required": [
+          "params"
+        ],
+        "properties": {
+          "params": {
+            "required": [
+              "media_buy_id",
+              "status"
+            ],
+            "properties": {
+              "status": {
+                "$ref": "../enums/media-buy-status.json"
+              }
+            }
+          }
+        }
+      }
     },
     {
-      "data": {
-        "params": {
-          "media_buy_id": "mb-789",
-          "spend_percentage": 95
-        },
-        "scenario": "simulate_budget_spend"
+      "if": {
+        "properties": {
+          "scenario": {
+            "const": "force_session_status"
+          }
+        }
       },
-      "description": "Simulate budget consumption to 95%"
-    }
-  ],
-  "oneOf": [
+      "then": {
+        "required": [
+          "params"
+        ],
+        "properties": {
+          "params": {
+            "required": [
+              "session_id",
+              "status"
+            ],
+            "properties": {
+              "status": {
+                "type": "string",
+                "enum": [
+                  "complete",
+                  "terminated"
+                ]
+              }
+            }
+          }
+        }
+      }
+    },
     {
-      "additionalProperties": true,
-      "description": "Discover which scenarios this seller supports",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "scenario": {
-          "const": "list_scenarios",
-          "type": "string"
+      "if": {
+        "properties": {
+          "scenario": {
+            "const": "simulate_delivery"
+          }
         }
       },
-      "required": [
-        "scenario"
-      ],
-      "title": "ListScenarios",
-      "type": "object"
+      "then": {
+        "required": [
+          "params"
+        ],
+        "properties": {
+          "params": {
+            "required": [
+              "media_buy_id"
+            ]
+          }
+        }
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Transition a creative to the specified status",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "params": {
-          "additionalProperties": true,
-          "properties": {
-            "creative_id": {
-              "description": "Creative to transition",
-              "type": "string"
-            },
-            "rejection_reason": {
-              "description": "Reason for rejection. Required when status = rejected.",
-              "type": "string"
-            },
-            "status": {
-              "$ref": "../enums/creative-status.json"
-            }
-          },
-          "required": [
-            "creative_id",
-            "status"
-          ],
-          "type": "object"
-        },
-        "scenario": {
-          "const": "force_creative_status",
-          "type": "string"
+      "if": {
+        "properties": {
+          "scenario": {
+            "const": "simulate_budget_spend"
+          }
         }
       },
-      "required": [
-        "scenario",
-        "params"
-      ],
-      "title": "ForceCreativeStatus",
-      "type": "object"
+      "then": {
+        "required": [
+          "params"
+        ],
+        "properties": {
+          "params": {
+            "required": [
+              "spend_percentage"
+            ],
+            "anyOf": [
+              {
+                "required": [
+                  "account_id"
+                ]
+              },
+              {
+                "required": [
+                  "media_buy_id"
+                ]
+              }
+            ]
+          }
+        }
+      }
+    }
+  ],
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "List supported scenarios",
+      "data": {
+        "scenario": "list_scenarios"
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Transition an account to the specified status",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
+      "description": "Force a creative to rejected status",
+      "data": {
+        "scenario": "force_creative_status",
         "params": {
-          "additionalProperties": true,
-          "properties": {
-            "account_id": {
-              "description": "Account to transition",
-              "type": "string"
-            },
-            "status": {
-              "$ref": "../enums/account-status.json"
-            }
-          },
-          "required": [
-            "account_id",
-            "status"
-          ],
-          "type": "object"
-        },
-        "scenario": {
-          "const": "force_account_status",
-          "type": "string"
+          "creative_id": "cr-123",
+          "status": "rejected",
+          "rejection_reason": "Brand safety policy violation"
         }
-      },
-      "required": [
-        "scenario",
-        "params"
-      ],
-      "title": "ForceAccountStatus",
-      "type": "object"
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Transition a media buy to the specified status",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
+      "description": "Force account suspension",
+      "data": {
+        "scenario": "force_account_status",
         "params": {
-          "additionalProperties": true,
-          "properties": {
-            "media_buy_id": {
-              "description": "Media buy to transition",
-              "type": "string"
-            },
-            "rejection_reason": {
-              "description": "Reason for rejection. Required when status = rejected.",
-              "type": "string"
-            },
-            "status": {
-              "$ref": "../enums/media-buy-status.json"
-            }
-          },
-          "required": [
-            "media_buy_id",
-            "status"
-          ],
-          "type": "object"
-        },
-        "scenario": {
-          "const": "force_media_buy_status",
-          "type": "string"
+          "account_id": "acct-456",
+          "status": "suspended"
         }
-      },
-      "required": [
-        "scenario",
-        "params"
-      ],
-      "title": "ForceMediaBuyStatus",
-      "type": "object"
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Transition an SI session to a terminal status",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
+      "description": "Simulate session timeout",
+      "data": {
+        "scenario": "force_session_status",
         "params": {
-          "additionalProperties": true,
-          "properties": {
-            "session_id": {
-              "description": "Session to transition",
-              "type": "string"
-            },
-            "status": {
-              "description": "Target terminal status. Only terminal statuses are valid \u2014 active and pending_handoff are session-internal transitions.",
-              "enum": [
-                "complete",
-                "terminated"
-              ],
-              "type": "string"
-            },
-            "termination_reason": {
-              "description": "Reason for termination (e.g., session_timeout, host_terminated, policy_violation). Required when status = terminated.",
-              "type": "string"
-            }
-          },
-          "required": [
-            "session_id",
-            "status"
-          ],
-          "type": "object"
-        },
-        "scenario": {
-          "const": "force_session_status",
-          "type": "string"
+          "session_id": "sess-abc",
+          "status": "terminated",
+          "termination_reason": "session_timeout"
         }
-      },
-      "required": [
-        "scenario",
-        "params"
-      ],
-      "title": "ForceSessionStatus",
-      "type": "object"
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Inject synthetic delivery data for a media buy",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
+      "description": "Simulate delivery data",
+      "data": {
+        "scenario": "simulate_delivery",
         "params": {
-          "additionalProperties": true,
-          "properties": {
-            "clicks": {
-              "description": "Clicks to simulate",
-              "minimum": 0,
-              "type": "integer"
-            },
-            "conversions": {
-              "description": "Conversions to simulate",
-              "minimum": 0,
-              "type": "integer"
-            },
-            "impressions": {
-              "description": "Impressions to simulate",
-              "minimum": 0,
-              "type": "integer"
-            },
-            "media_buy_id": {
-              "description": "Media buy to add delivery to",
-              "type": "string"
-            },
-            "reported_spend": {
-              "description": "Spend as reported in delivery data. Does not affect budget.",
-              "properties": {
-                "amount": {
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "currency": {
-                  "pattern": "^[A-Z]{3}$",
-                  "type": "string"
-                }
-              },
-              "required": [
-                "amount",
-                "currency"
-              ],
-              "type": "object"
-            }
-          },
-          "required": [
-            "media_buy_id"
-          ],
-          "type": "object"
-        },
-        "scenario": {
-          "const": "simulate_delivery",
-          "type": "string"
+          "media_buy_id": "mb-789",
+          "impressions": 10000,
+          "clicks": 150,
+          "reported_spend": {
+            "amount": 150.0,
+            "currency": "USD"
+          }
         }
-      },
-      "required": [
-        "scenario",
-        "params"
-      ],
-      "title": "SimulateDelivery",
-      "type": "object"
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Simulate budget consumption to a specified percentage",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
+      "description": "Simulate budget consumption to 95%",
+      "data": {
+        "scenario": "simulate_budget_spend",
         "params": {
-          "additionalProperties": true,
-          "anyOf": [
-            {
-              "required": [
-                "account_id"
-              ]
-            },
-            {
-              "required": [
-                "media_buy_id"
-              ]
-            }
-          ],
-          "properties": {
-            "account_id": {
-              "description": "Account (for account-level budget)",
-              "type": "string"
-            },
-            "media_buy_id": {
-              "description": "Media buy (for buy-level budget)",
-              "type": "string"
-            },
-            "spend_percentage": {
-              "description": "Spend to this percentage of budget (0\u2013100)",
-              "maximum": 100,
-              "minimum": 0,
-              "type": "number"
-            }
-          },
-          "required": [
-            "spend_percentage"
-          ],
-          "type": "object"
-        },
-        "scenario": {
-          "const": "simulate_budget_spend",
-          "type": "string"
+          "media_buy_id": "mb-789",
+          "spend_percentage": 95
         }
-      },
-      "required": [
-        "scenario",
-        "params"
-      ],
-      "title": "SimulateBudgetSpend",
-      "type": "object"
+      }
     }
-  ],
-  "title": "Comply Test Controller Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/compliance/comply-test-controller-response.json b/schemas/cache/compliance/comply-test-controller-response.json
index 9df9563c1..dbc6562c4 100644
--- a/schemas/cache/compliance/comply-test-controller-response.json
+++ b/schemas/cache/compliance/comply-test-controller-response.json
@@ -1,120 +1,22 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Comply Test Controller Response",
   "description": "Response from the comply_test_controller tool. Shape varies by scenario type: list_scenarios returns available scenarios, force_* returns state transition results, simulate_* returns simulation results.",
-  "examples": [
-    {
-      "data": {
-        "scenarios": [
-          "force_creative_status",
-          "force_account_status",
-          "force_media_buy_status"
-        ],
-        "success": true
-      },
-      "description": "List scenarios response"
-    },
-    {
-      "data": {
-        "current_state": "approved",
-        "message": "Creative cr-123 transitioned from processing to approved",
-        "previous_state": "processing",
-        "success": true
-      },
-      "description": "Successful state transition"
-    },
-    {
-      "data": {
-        "cumulative": {
-          "clicks": 380,
-          "impressions": 25000,
-          "reported_spend": {
-            "amount": 375.0,
-            "currency": "USD"
-          }
-        },
-        "message": "Delivery simulated for mb-789: 10000 impressions, 150 clicks, $150.00 spend",
-        "simulated": {
-          "clicks": 150,
-          "impressions": 10000,
-          "reported_spend": {
-            "amount": 150.0,
-            "currency": "USD"
-          }
-        },
-        "success": true
-      },
-      "description": "Delivery simulation with cumulative totals"
-    },
-    {
-      "data": {
-        "message": "Budget for mb-789 set to 95% consumed ($950.00 of $1000.00)",
-        "simulated": {
-          "budget": {
-            "amount": 1000.0,
-            "currency": "USD"
-          },
-          "computed_spend": {
-            "amount": 950.0,
-            "currency": "USD"
-          },
-          "spend_percentage": 95
-        },
-        "success": true
-      },
-      "description": "Budget spend simulation"
-    },
-    {
-      "data": {
-        "current_state": "archived",
-        "error": "INVALID_TRANSITION",
-        "error_detail": "Cannot transition from archived to processing \u2014 archived is terminal",
-        "success": false
-      },
-      "description": "Invalid transition error"
-    },
-    {
-      "data": {
-        "current_state": null,
-        "error": "NOT_FOUND",
-        "error_detail": "Creative cr-unknown not found",
-        "success": false
-      },
-      "description": "Entity not found"
-    }
-  ],
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "ListScenariosSuccess",
       "description": "Lists which scenarios this seller's test controller supports",
-      "not": {
-        "anyOf": [
-          {
-            "required": [
-              "error"
-            ]
-          },
-          {
-            "required": [
-              "previous_state"
-            ]
-          },
-          {
-            "required": [
-              "simulated"
-            ]
-          }
-        ]
-      },
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+        "success": {
+          "type": "boolean",
+          "const": true
         },
         "scenarios": {
-          "description": "Scenarios this seller has implemented",
+          "type": "array",
           "items": {
+            "type": "string",
             "enum": [
               "force_creative_status",
               "force_account_status",
@@ -122,26 +24,22 @@
               "force_session_status",
               "simulate_delivery",
               "simulate_budget_spend"
-            ],
-            "type": "string"
+            ]
           },
-          "type": "array"
+          "description": "Scenarios this seller has implemented"
         },
-        "success": {
-          "const": true,
-          "type": "boolean"
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "success",
         "scenarios"
       ],
-      "title": "ListScenariosSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "A force_* scenario successfully transitioned the entity to the target state",
       "not": {
         "anyOf": [
           {
@@ -151,7 +49,7 @@
           },
           {
             "required": [
-              "scenarios"
+              "previous_state"
             ]
           },
           {
@@ -160,29 +58,34 @@
             ]
           }
         ]
-      },
+      }
+    },
+    {
+      "title": "StateTransitionSuccess",
+      "description": "A force_* scenario successfully transitioned the entity to the target state",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
+        "success": {
+          "type": "boolean",
+          "const": true
         },
-        "current_state": {
-          "description": "State after this transition",
-          "type": "string"
+        "previous_state": {
+          "type": "string",
+          "description": "State before this transition"
         },
-        "ext": {
-          "$ref": "../core/ext.json"
+        "current_state": {
+          "type": "string",
+          "description": "State after this transition"
         },
         "message": {
-          "description": "Human-readable description of the transition",
-          "type": "string"
+          "type": "string",
+          "description": "Human-readable description of the transition"
         },
-        "previous_state": {
-          "description": "State before this transition",
-          "type": "string"
+        "context": {
+          "$ref": "../core/context.json"
         },
-        "success": {
-          "const": true,
-          "type": "boolean"
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -190,12 +93,7 @@
         "previous_state",
         "current_state"
       ],
-      "title": "StateTransitionSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "A simulate_delivery or simulate_budget_spend scenario succeeded. For delivery: simulated contains impressions/clicks/reported_spend/conversions and cumulative contains running totals. For budget: simulated contains spend_percentage/computed_spend/budget.",
       "not": {
         "anyOf": [
           {
@@ -210,56 +108,56 @@
           },
           {
             "required": [
-              "previous_state"
+              "simulated"
             ]
           }
         ]
-      },
+      }
+    },
+    {
+      "title": "SimulationSuccess",
+      "description": "A simulate_delivery or simulate_budget_spend scenario succeeded. For delivery: simulated contains impressions/clicks/reported_spend/conversions and cumulative contains running totals. For budget: simulated contains spend_percentage/computed_spend/budget.",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
+        "success": {
+          "type": "boolean",
+          "const": true
+        },
+        "simulated": {
+          "type": "object",
+          "description": "Values injected or applied by this call. Shape depends on scenario.",
+          "additionalProperties": true
         },
         "cumulative": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Running totals across all simulation calls (simulate_delivery only)",
-          "type": "object"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+          "additionalProperties": true
         },
         "message": {
           "type": "string"
         },
-        "simulated": {
-          "additionalProperties": true,
-          "description": "Values injected or applied by this call. Shape depends on scenario.",
-          "type": "object"
+        "context": {
+          "$ref": "../core/context.json"
         },
-        "success": {
-          "const": true,
-          "type": "boolean"
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "success",
         "simulated"
       ],
-      "title": "SimulationSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "The scenario failed \u2014 invalid transition, unknown entity, unsupported scenario, or invalid params",
       "not": {
         "anyOf": [
           {
             "required": [
-              "scenarios"
+              "error"
             ]
           },
           {
             "required": [
-              "simulated"
+              "scenarios"
             ]
           },
           {
@@ -268,20 +166,19 @@
             ]
           }
         ]
-      },
+      }
+    },
+    {
+      "title": "ControllerError",
+      "description": "The scenario failed \u2014 invalid transition, unknown entity, unsupported scenario, or invalid params",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "current_state": {
-          "description": "Current state of the entity, or null if not found",
-          "type": [
-            "string",
-            "null"
-          ]
+        "success": {
+          "type": "boolean",
+          "const": false
         },
         "error": {
-          "description": "Structured error code",
+          "type": "string",
           "enum": [
             "INVALID_TRANSITION",
             "INVALID_STATE",
@@ -291,28 +188,131 @@
             "FORBIDDEN",
             "INTERNAL_ERROR"
           ],
-          "type": "string"
+          "description": "Structured error code"
         },
         "error_detail": {
-          "description": "Human-readable explanation of the failure",
-          "type": "string"
+          "type": "string",
+          "description": "Human-readable explanation of the failure"
+        },
+        "current_state": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "description": "Current state of the entity, or null if not found"
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "success": {
-          "const": false,
-          "type": "boolean"
         }
       },
       "required": [
         "success",
         "error"
       ],
-      "title": "ControllerError",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "scenarios"
+            ]
+          },
+          {
+            "required": [
+              "simulated"
+            ]
+          },
+          {
+            "required": [
+              "previous_state"
+            ]
+          }
+        ]
+      }
     }
   ],
-  "title": "Comply Test Controller Response",
-  "type": "object"
+  "examples": [
+    {
+      "description": "List scenarios response",
+      "data": {
+        "success": true,
+        "scenarios": [
+          "force_creative_status",
+          "force_account_status",
+          "force_media_buy_status"
+        ]
+      }
+    },
+    {
+      "description": "Successful state transition",
+      "data": {
+        "success": true,
+        "previous_state": "processing",
+        "current_state": "approved",
+        "message": "Creative cr-123 transitioned from processing to approved"
+      }
+    },
+    {
+      "description": "Delivery simulation with cumulative totals",
+      "data": {
+        "success": true,
+        "simulated": {
+          "impressions": 10000,
+          "clicks": 150,
+          "reported_spend": {
+            "amount": 150.0,
+            "currency": "USD"
+          }
+        },
+        "cumulative": {
+          "impressions": 25000,
+          "clicks": 380,
+          "reported_spend": {
+            "amount": 375.0,
+            "currency": "USD"
+          }
+        },
+        "message": "Delivery simulated for mb-789: 10000 impressions, 150 clicks, $150.00 spend"
+      }
+    },
+    {
+      "description": "Budget spend simulation",
+      "data": {
+        "success": true,
+        "simulated": {
+          "spend_percentage": 95,
+          "computed_spend": {
+            "amount": 950.0,
+            "currency": "USD"
+          },
+          "budget": {
+            "amount": 1000.0,
+            "currency": "USD"
+          }
+        },
+        "message": "Budget for mb-789 set to 95% consumed ($950.00 of $1000.00)"
+      }
+    },
+    {
+      "description": "Invalid transition error",
+      "data": {
+        "success": false,
+        "error": "INVALID_TRANSITION",
+        "error_detail": "Cannot transition from archived to processing \u2014 archived is terminal",
+        "current_state": "archived"
+      }
+    },
+    {
+      "description": "Entity not found",
+      "data": {
+        "success": false,
+        "error": "NOT_FOUND",
+        "error_detail": "Creative cr-unknown not found",
+        "current_state": null
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/artifact-webhook-payload.json b/schemas/cache/content-standards/artifact-webhook-payload.json
index 5d672d24f..723a92c97 100644
--- a/schemas/cache/content-standards/artifact-webhook-payload.json
+++ b/schemas/cache/content-standards/artifact-webhook-payload.json
@@ -1,71 +1,72 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Artifact Webhook Payload",
   "description": "Payload sent by sales agents to orchestrators when pushing content artifacts for governance validation. Complements get_media_buy_artifacts for push-based artifact delivery.",
+  "type": "object",
   "properties": {
+    "media_buy_id": {
+      "type": "string",
+      "description": "Media buy identifier these artifacts belong to"
+    },
+    "batch_id": {
+      "type": "string",
+      "description": "Unique identifier for this batch of artifacts. Use for deduplication and acknowledgment."
+    },
+    "timestamp": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this batch was generated (ISO 8601)"
+    },
     "artifacts": {
+      "type": "array",
       "description": "Content artifacts from delivered impressions",
       "items": {
+        "type": "object",
         "properties": {
           "artifact": {
             "$ref": "artifact.json",
             "description": "The content artifact"
           },
           "delivered_at": {
-            "description": "When the impression was delivered (ISO 8601)",
+            "type": "string",
             "format": "date-time",
-            "type": "string"
+            "description": "When the impression was delivered (ISO 8601)"
           },
           "impression_id": {
-            "description": "Optional impression identifier for correlation with delivery reports",
-            "type": "string"
+            "type": "string",
+            "description": "Optional impression identifier for correlation with delivery reports"
           },
           "package_id": {
-            "description": "Package within the media buy this artifact relates to",
-            "type": "string"
+            "type": "string",
+            "description": "Package within the media buy this artifact relates to"
           }
         },
         "required": [
           "artifact",
           "delivered_at"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "batch_id": {
-      "description": "Unique identifier for this batch of artifacts. Use for deduplication and acknowledgment.",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "media_buy_id": {
-      "description": "Media buy identifier these artifacts belong to",
-      "type": "string"
+        ]
+      }
     },
     "pagination": {
+      "type": "object",
       "description": "Pagination info when batching large artifact sets",
       "properties": {
-        "batch_number": {
-          "description": "Current batch number (1-indexed)",
-          "type": "integer"
-        },
         "total_artifacts": {
-          "description": "Total artifacts in the delivery period",
-          "type": "integer"
+          "type": "integer",
+          "description": "Total artifacts in the delivery period"
+        },
+        "batch_number": {
+          "type": "integer",
+          "description": "Current batch number (1-indexed)"
         },
         "total_batches": {
-          "description": "Total batches for this delivery period",
-          "type": "integer"
+          "type": "integer",
+          "description": "Total batches for this delivery period"
         }
-      },
-      "type": "object"
+      }
     },
-    "timestamp": {
-      "description": "When this batch was generated (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -74,6 +75,5 @@
     "timestamp",
     "artifacts"
   ],
-  "title": "Artifact Webhook Payload",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/artifact.json b/schemas/cache/content-standards/artifact.json
index f63c65adf..41f43d187 100644
--- a/schemas/cache/content-standards/artifact.json
+++ b/schemas/cache/content-standards/artifact.json
@@ -1,219 +1,184 @@
 {
-  "$defs": {
-    "asset_access": {
-      "description": "Authentication for accessing secured asset URLs",
-      "oneOf": [
-        {
-          "description": "Bearer token authentication",
-          "properties": {
-            "method": {
-              "const": "bearer_token",
-              "type": "string"
-            },
-            "token": {
-              "description": "OAuth2 bearer token for Authorization header",
-              "type": "string"
-            }
-          },
-          "required": [
-            "method",
-            "token"
-          ],
-          "type": "object"
-        },
-        {
-          "description": "Service account authentication (GCP, AWS)",
-          "properties": {
-            "credentials": {
-              "additionalProperties": true,
-              "description": "Service account credentials",
-              "type": "object"
-            },
-            "method": {
-              "const": "service_account",
-              "type": "string"
-            },
-            "provider": {
-              "description": "Cloud provider",
-              "enum": [
-                "gcp",
-                "aws"
-              ],
-              "type": "string"
-            }
-          },
-          "required": [
-            "method",
-            "provider"
-          ],
-          "type": "object"
-        },
-        {
-          "description": "Pre-signed URL (credentials embedded in URL)",
-          "properties": {
-            "method": {
-              "const": "signed_url",
-              "type": "string"
-            }
-          },
-          "required": [
-            "method"
-          ],
-          "type": "object"
-        }
-      ],
-      "type": "object"
-    }
-  },
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Artifact",
   "description": "Content artifact for safety and suitability evaluation. An artifact represents content adjacent to an ad placement - a news article, podcast segment, video chapter, or social post. Artifacts are collections of assets (text, images, video, audio) plus metadata and signals.",
+  "type": "object",
   "properties": {
+    "property_rid": {
+      "type": "string",
+      "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem."
+    },
     "artifact_id": {
-      "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123').",
-      "type": "string"
+      "type": "string",
+      "description": "Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+    },
+    "variant_id": {
+      "type": "string",
+      "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+    },
+    "format_id": {
+      "$ref": "../core/format-id.json",
+      "description": "Optional reference to a format definition. Uses the same format registry as creative formats."
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes)."
+    },
+    "published_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the artifact was published (ISO 8601 format)"
+    },
+    "last_update_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the artifact was last modified (ISO 8601 format)"
     },
     "assets": {
+      "type": "array",
       "description": "Artifact assets in document flow order - text blocks, images, video, audio",
+      "maxItems": 200,
       "items": {
         "oneOf": [
           {
+            "type": "object",
             "description": "Text block (paragraph, heading, etc.)",
             "properties": {
+              "type": {
+                "type": "string",
+                "const": "text"
+              },
+              "role": {
+                "type": "string",
+                "enum": [
+                  "title",
+                  "paragraph",
+                  "heading",
+                  "caption",
+                  "quote",
+                  "list_item",
+                  "description"
+                ],
+                "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+              },
               "content": {
+                "type": "string",
                 "description": "Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
-                "maxLength": 100000,
-                "type": "string"
+                "maxLength": 100000
               },
               "content_format": {
-                "default": "text/plain",
-                "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                "type": "string",
                 "enum": [
                   "text/plain",
                   "text/markdown",
                   "text/html",
                   "application/json"
                 ],
-                "type": "string"
+                "description": "MIME type indicating how to parse the content field. Default: text/plain.",
+                "default": "text/plain"
+              },
+              "language": {
+                "type": "string",
+                "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
               },
               "heading_level": {
-                "description": "Heading level (1-6), only for role=heading",
-                "maximum": 6,
+                "type": "integer",
                 "minimum": 1,
-                "type": "integer"
-              },
-              "language": {
-                "description": "BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content.",
-                "type": "string"
+                "maximum": 6,
+                "description": "Heading level (1-6), only for role=heading"
               },
               "provenance": {
                 "$ref": "../core/provenance.json",
                 "description": "Provenance for this text block, overrides artifact-level provenance"
-              },
-              "role": {
-                "description": "Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries.",
-                "enum": [
-                  "title",
-                  "paragraph",
-                  "heading",
-                  "caption",
-                  "quote",
-                  "list_item",
-                  "description"
-                ],
-                "type": "string"
-              },
-              "type": {
-                "const": "text",
-                "type": "string"
               }
             },
             "required": [
               "type",
               "content"
-            ],
-            "type": "object"
+            ]
           },
           {
+            "type": "object",
             "description": "Image asset",
             "properties": {
+              "type": {
+                "type": "string",
+                "const": "image"
+              },
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Image URL"
+              },
               "access": {
                 "$ref": "#/$defs/asset_access",
                 "description": "Authentication for secured URLs"
               },
               "alt_text": {
-                "description": "Alt text or image description",
-                "type": "string"
+                "type": "string",
+                "description": "Alt text or image description"
               },
               "caption": {
-                "description": "Image caption",
-                "type": "string"
+                "type": "string",
+                "description": "Image caption"
+              },
+              "width": {
+                "type": "integer",
+                "description": "Image width in pixels"
               },
               "height": {
-                "description": "Image height in pixels",
-                "type": "integer"
+                "type": "integer",
+                "description": "Image height in pixels"
               },
               "provenance": {
                 "$ref": "../core/provenance.json",
                 "description": "Provenance for this image, overrides artifact-level provenance"
-              },
-              "type": {
-                "const": "image",
-                "type": "string"
-              },
-              "url": {
-                "description": "Image URL",
-                "format": "uri",
-                "type": "string"
-              },
-              "width": {
-                "description": "Image width in pixels",
-                "type": "integer"
               }
             },
             "required": [
               "type",
               "url"
-            ],
-            "type": "object"
+            ]
           },
           {
+            "type": "object",
             "description": "Video asset",
             "properties": {
+              "type": {
+                "type": "string",
+                "const": "video"
+              },
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Video URL"
+              },
               "access": {
                 "$ref": "#/$defs/asset_access",
                 "description": "Authentication for secured URLs"
               },
               "duration_ms": {
-                "description": "Video duration in milliseconds",
-                "type": "integer"
-              },
-              "provenance": {
-                "$ref": "../core/provenance.json",
-                "description": "Provenance for this video, overrides artifact-level provenance"
-              },
-              "thumbnail_url": {
-                "description": "Video thumbnail URL",
-                "format": "uri",
-                "type": "string"
+                "type": "integer",
+                "description": "Video duration in milliseconds"
               },
               "transcript": {
+                "type": "string",
                 "description": "Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
-                "maxLength": 200000,
-                "type": "string"
+                "maxLength": 200000
               },
               "transcript_format": {
-                "default": "text/plain",
-                "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                "type": "string",
                 "enum": [
                   "text/plain",
                   "text/markdown",
                   "application/json"
                 ],
-                "type": "string"
+                "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                "default": "text/plain"
               },
               "transcript_source": {
-                "description": "How the transcript was generated",
+                "type": "string",
                 "enum": [
                   "original_script",
                   "subtitles",
@@ -221,179 +186,149 @@
                   "dub",
                   "generated"
                 ],
-                "type": "string"
+                "description": "How the transcript was generated"
               },
-              "type": {
-                "const": "video",
-                "type": "string"
-              },
-              "url": {
-                "description": "Video URL",
+              "thumbnail_url": {
+                "type": "string",
                 "format": "uri",
-                "type": "string"
+                "description": "Video thumbnail URL"
+              },
+              "provenance": {
+                "$ref": "../core/provenance.json",
+                "description": "Provenance for this video, overrides artifact-level provenance"
               }
             },
             "required": [
               "type",
               "url"
-            ],
-            "type": "object"
+            ]
           },
           {
+            "type": "object",
             "description": "Audio asset",
             "properties": {
+              "type": {
+                "type": "string",
+                "const": "audio"
+              },
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Audio URL"
+              },
               "access": {
                 "$ref": "#/$defs/asset_access",
                 "description": "Authentication for secured URLs"
               },
               "duration_ms": {
-                "description": "Audio duration in milliseconds",
-                "type": "integer"
-              },
-              "provenance": {
-                "$ref": "../core/provenance.json",
-                "description": "Provenance for this audio, overrides artifact-level provenance"
+                "type": "integer",
+                "description": "Audio duration in milliseconds"
               },
               "transcript": {
+                "type": "string",
                 "description": "Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.",
-                "maxLength": 200000,
-                "type": "string"
+                "maxLength": 200000
               },
               "transcript_format": {
-                "default": "text/plain",
-                "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                "type": "string",
                 "enum": [
                   "text/plain",
                   "text/markdown",
                   "application/json"
                 ],
-                "type": "string"
+                "description": "MIME type indicating how to parse the transcript field. Default: text/plain.",
+                "default": "text/plain"
               },
               "transcript_source": {
-                "description": "How the transcript was generated",
+                "type": "string",
                 "enum": [
                   "original_script",
                   "closed_captions",
                   "generated"
                 ],
-                "type": "string"
-              },
-              "type": {
-                "const": "audio",
-                "type": "string"
+                "description": "How the transcript was generated"
               },
-              "url": {
-                "description": "Audio URL",
-                "format": "uri",
-                "type": "string"
+              "provenance": {
+                "$ref": "../core/provenance.json",
+                "description": "Provenance for this audio, overrides artifact-level provenance"
               }
             },
             "required": [
               "type",
               "url"
-            ],
-            "type": "object"
+            ]
           }
         ]
-      },
-      "maxItems": 200,
-      "type": "array"
-    },
-    "format_id": {
-      "$ref": "../core/format-id.json",
-      "description": "Optional reference to a format definition. Uses the same format registry as creative formats."
-    },
-    "identifiers": {
-      "additionalProperties": true,
-      "description": "Platform-specific identifiers for this artifact",
-      "properties": {
-        "apple_podcast_id": {
-          "description": "Apple Podcasts ID",
-          "type": "string"
-        },
-        "podcast_guid": {
-          "description": "Podcast GUID (from RSS feed)",
-          "type": "string"
-        },
-        "rss_url": {
-          "description": "RSS feed URL",
-          "format": "uri",
-          "type": "string"
-        },
-        "spotify_collection_id": {
-          "description": "Spotify collection ID",
-          "type": "string"
-        },
-        "youtube_video_id": {
-          "description": "YouTube video ID",
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "last_update_time": {
-      "description": "When the artifact was last modified (ISO 8601 format)",
-      "format": "date-time",
-      "type": "string"
+      }
     },
     "metadata": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Rich metadata extracted from the artifact",
       "properties": {
-        "author": {
-          "description": "Artifact author name",
-          "type": "string"
-        },
         "canonical": {
-          "description": "Canonical URL",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "Canonical URL"
         },
-        "json_ld": {
-          "description": "JSON-LD structured data (schema.org)",
-          "items": {
-            "type": "object"
-          },
-          "type": "array"
+        "author": {
+          "type": "string",
+          "description": "Artifact author name"
         },
         "keywords": {
-          "description": "Artifact keywords",
-          "type": "string"
+          "type": "string",
+          "description": "Artifact keywords"
         },
         "open_graph": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Open Graph protocol metadata",
-          "type": "object"
+          "additionalProperties": true
         },
         "twitter_card": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Twitter Card metadata",
-          "type": "object"
+          "additionalProperties": true
+        },
+        "json_ld": {
+          "type": "array",
+          "description": "JSON-LD structured data (schema.org)",
+          "items": {
+            "type": "object"
+          }
         }
       },
-      "type": "object"
-    },
-    "property_rid": {
-      "description": "Stable property identifier from the property catalog. Globally unique across the ecosystem.",
-      "type": "string"
+      "additionalProperties": true
     },
     "provenance": {
       "$ref": "../core/provenance.json",
       "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance."
     },
-    "published_time": {
-      "description": "When the artifact was published (ISO 8601 format)",
-      "format": "date-time",
-      "type": "string"
-    },
-    "url": {
-      "description": "Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).",
-      "format": "uri",
-      "type": "string"
-    },
-    "variant_id": {
-      "description": "Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique.",
-      "type": "string"
+    "identifiers": {
+      "type": "object",
+      "description": "Platform-specific identifiers for this artifact",
+      "properties": {
+        "apple_podcast_id": {
+          "type": "string",
+          "description": "Apple Podcasts ID"
+        },
+        "spotify_collection_id": {
+          "type": "string",
+          "description": "Spotify collection ID"
+        },
+        "podcast_guid": {
+          "type": "string",
+          "description": "Podcast GUID (from RSS feed)"
+        },
+        "youtube_video_id": {
+          "type": "string",
+          "description": "YouTube video ID"
+        },
+        "rss_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "RSS feed URL"
+        }
+      },
+      "additionalProperties": true
     }
   },
   "required": [
@@ -401,6 +336,71 @@
     "artifact_id",
     "assets"
   ],
-  "title": "Artifact",
-  "type": "object"
+  "additionalProperties": true,
+  "$defs": {
+    "asset_access": {
+      "type": "object",
+      "description": "Authentication for accessing secured asset URLs",
+      "oneOf": [
+        {
+          "type": "object",
+          "description": "Bearer token authentication",
+          "properties": {
+            "method": {
+              "type": "string",
+              "const": "bearer_token"
+            },
+            "token": {
+              "type": "string",
+              "description": "OAuth2 bearer token for Authorization header"
+            }
+          },
+          "required": [
+            "method",
+            "token"
+          ]
+        },
+        {
+          "type": "object",
+          "description": "Service account authentication (GCP, AWS)",
+          "properties": {
+            "method": {
+              "type": "string",
+              "const": "service_account"
+            },
+            "provider": {
+              "type": "string",
+              "enum": [
+                "gcp",
+                "aws"
+              ],
+              "description": "Cloud provider"
+            },
+            "credentials": {
+              "type": "object",
+              "description": "Service account credentials",
+              "additionalProperties": true
+            }
+          },
+          "required": [
+            "method",
+            "provider"
+          ]
+        },
+        {
+          "type": "object",
+          "description": "Pre-signed URL (credentials embedded in URL)",
+          "properties": {
+            "method": {
+              "type": "string",
+              "const": "signed_url"
+            }
+          },
+          "required": [
+            "method"
+          ]
+        }
+      ]
+    }
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/calibrate-content-request.json b/schemas/cache/content-standards/calibrate-content-request.json
index 34dc64118..43512f36f 100644
--- a/schemas/cache/content-standards/calibrate-content-request.json
+++ b/schemas/cache/content-standards/calibrate-content-request.json
@@ -1,26 +1,40 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Calibrate Content Request",
   "description": "Request parameters for evaluating content during calibration. Multi-turn dialogue is handled at the protocol layer via contextId.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "standards_id": {
+      "type": "string",
+      "description": "Standards configuration to calibrate against"
+    },
     "artifact": {
       "$ref": "artifact.json",
       "description": "Artifact to evaluate"
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
-    "standards_id": {
-      "description": "Standards configuration to calibrate against",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "standards_id",
     "artifact"
-  ],
-  "title": "Calibrate Content Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/calibrate-content-response.json b/schemas/cache/content-standards/calibrate-content-response.json
index e0a90489c..6d85bfef6 100644
--- a/schemas/cache/content-standards/calibrate-content-response.json
+++ b/schemas/cache/content-standards/calibrate-content-response.json
@@ -1,82 +1,95 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Calibrate Content Response",
   "description": "Response payload with verdict and detailed explanations for collaborative calibration",
+  "type": "object",
   "oneOf": [
     {
+      "type": "object",
       "description": "Success response with detailed calibration feedback",
       "properties": {
+        "verdict": {
+          "type": "string",
+          "enum": [
+            "pass",
+            "fail"
+          ],
+          "description": "Overall pass/fail verdict for the content evaluation"
+        },
         "confidence": {
-          "description": "Model confidence in the verdict (0-1)",
-          "maximum": 1,
+          "type": "number",
           "minimum": 0,
-          "type": "number"
-        },
-        "context": {
-          "$ref": "../core/context.json"
+          "maximum": 1,
+          "description": "Model confidence in the verdict (0-1)"
         },
         "explanation": {
-          "description": "Detailed natural language explanation of the decision",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+          "type": "string",
+          "description": "Detailed natural language explanation of the decision"
         },
         "features": {
-          "description": "Per-feature breakdown with explanations",
+          "type": "array",
+          "description": "Per-feature breakdown with explanations. Mirrors validate_content_delivery feature shape so calibration loops can correlate against production verdicts by policy_id.",
           "items": {
+            "type": "object",
             "properties": {
-              "explanation": {
-                "description": "Human-readable explanation of why this feature passed or failed",
-                "type": "string"
-              },
               "feature_id": {
-                "description": "Which feature was evaluated (e.g., brand_safety, brand_suitability, competitor_adjacency)",
-                "type": "string"
+                "type": "string",
+                "description": "Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'competitor_adjacency'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact'. Reserved prefixes: 'record:', 'delivery:'."
               },
               "status": {
-                "description": "Evaluation status for this feature",
+                "type": "string",
                 "enum": [
                   "passed",
                   "failed",
                   "warning",
                   "unevaluated"
                 ],
-                "type": "string"
+                "description": "Evaluation status for this feature"
+              },
+              "policy_id": {
+                "type": "string",
+                "description": "Policy ID that triggered this result. Enables the calibration loop to iterate on specific policies by correlating sample outcomes to policy ids."
+              },
+              "explanation": {
+                "type": "string",
+                "description": "Human-readable explanation of why this feature passed or failed"
+              },
+              "confidence": {
+                "type": "number",
+                "minimum": 0,
+                "maximum": 1,
+                "description": "Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones."
               }
             },
             "required": [
               "feature_id",
               "status"
-            ],
-            "type": "object"
-          },
-          "type": "array"
+            ]
+          }
         },
-        "verdict": {
-          "description": "Overall pass/fail verdict for the content evaluation",
-          "enum": [
-            "pass",
-            "fail"
-          ],
-          "type": "string"
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "verdict"
-      ],
-      "type": "object"
+      ]
     },
     {
+      "type": "object",
       "description": "Error response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
-          },
-          "type": "array"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -84,10 +97,7 @@
       },
       "required": [
         "errors"
-      ],
-      "type": "object"
+      ]
     }
-  ],
-  "title": "Calibrate Content Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/content-standards.json b/schemas/cache/content-standards/content-standards.json
index 0d07de637..355f80148 100644
--- a/schemas/cache/content-standards/content-standards.json
+++ b/schemas/cache/content-standards/content-standards.json
@@ -1,78 +1,82 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Content Standards",
   "description": "A content standards configuration defining brand safety and suitability policies. Standards are scoped by brand, geography, and channel. Multiple standards can be active simultaneously for different scopes.",
+  "type": "object",
   "properties": {
-    "calibration_exemplars": {
-      "description": "Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.",
-      "properties": {
-        "fail": {
-          "description": "Artifacts that fail the content standards",
-          "items": {
-            "$ref": "artifact.json"
-          },
-          "type": "array"
-        },
-        "pass": {
-          "description": "Artifacts that pass the content standards",
-          "items": {
-            "$ref": "artifact.json"
-          },
-          "type": "array"
-        }
-      },
-      "type": "object"
+    "standards_id": {
+      "type": "string",
+      "description": "Unique identifier for this standards configuration"
     },
-    "channels_any": {
-      "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic).",
-      "items": {
-        "$ref": "../enums/channels.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for this standards configuration"
     },
     "countries_all": {
-      "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).",
+      "type": "array",
       "items": {
         "type": "string"
       },
       "minItems": 1,
-      "type": "array"
+      "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic)."
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "channels_any": {
+      "type": "array",
+      "items": {
+        "$ref": "../enums/channels.json"
+      },
+      "minItems": 1,
+      "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic)."
     },
     "languages_any": {
-      "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
+      "type": "array",
       "items": {
         "type": "string"
       },
       "minItems": 1,
-      "type": "array"
+      "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards."
     },
-    "name": {
-      "description": "Human-readable name for this standards configuration",
-      "type": "string"
+    "policies": {
+      "type": "array",
+      "description": "Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id; governance findings reference the policy_id that triggered them.",
+      "items": {
+        "$ref": "../governance/policy-entry.json"
+      },
+      "minItems": 1
     },
-    "policy": {
-      "description": "Natural language policy describing acceptable and unacceptable content contexts. Used by LLMs and human reviewers to make judgments.",
-      "type": "string"
+    "calibration_exemplars": {
+      "type": "object",
+      "description": "Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.",
+      "properties": {
+        "pass": {
+          "type": "array",
+          "items": {
+            "$ref": "artifact.json"
+          },
+          "description": "Artifacts that pass the content standards"
+        },
+        "fail": {
+          "type": "array",
+          "items": {
+            "$ref": "artifact.json"
+          },
+          "description": "Artifacts that fail the content standards"
+        }
+      }
     },
     "pricing_options": {
+      "type": "array",
       "description": "Pricing options for this content standards service. The buyer passes the selected pricing_option_id in report_usage for billing verification.",
       "items": {
-        "$ref": "../core/pricing-option.json"
+        "$ref": "../core/vendor-pricing-option.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "standards_id": {
-      "description": "Unique identifier for this standards configuration",
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "standards_id"
-  ],
-  "title": "Content Standards",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/create-content-standards-request.json b/schemas/cache/content-standards/create-content-standards-request.json
index a94d37140..a54ebd0ea 100644
--- a/schemas/cache/content-standards/create-content-standards-request.json
+++ b/schemas/cache/content-standards/create-content-standards-request.json
@@ -1,38 +1,98 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Create Content Standards Request",
   "description": "Request parameters for creating a new content standards configuration",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "scope": {
+      "type": "object",
+      "description": "Where this standards configuration applies",
+      "properties": {
+        "countries_all": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic)."
+        },
+        "channels_any": {
+          "type": "array",
+          "items": {
+            "$ref": "../enums/channels.json"
+          },
+          "minItems": 1,
+          "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic)."
+        },
+        "languages_any": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards."
+        },
+        "description": {
+          "type": "string",
+          "description": "Human-readable description of this scope"
+        }
+      },
+      "required": [
+        "languages_any"
+      ]
+    },
+    "registry_policy_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Registry policy IDs to use as the evaluation basis for this content standard. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria. The 'policy' field becomes optional when registry_policy_ids is provided."
+    },
+    "policies": {
+      "type": "array",
+      "description": "Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id and carries its own enforcement (must|should); governance findings reference the policy_id that triggered them. Inline bespoke policies can omit version/name/category (defaulted by the server). Combines with registry_policy_ids \u2014 registry policies and bespoke policies are both evaluated. Bespoke policy_ids MUST be flat (no colons/slashes) to avoid collision with namespaced registry ids.",
+      "items": {
+        "$ref": "../governance/policy-entry.json"
+      },
+      "minItems": 1
+    },
     "calibration_exemplars": {
+      "type": "object",
       "description": "Training/test set to calibrate policy interpretation. Use URL references for pages to be fetched and analyzed, or full artifacts for pre-extracted content.",
       "properties": {
-        "fail": {
-          "description": "Content that fails the standards",
+        "pass": {
+          "type": "array",
           "items": {
             "oneOf": [
               {
+                "type": "object",
                 "description": "URL reference - specific page to fetch and evaluate",
                 "properties": {
-                  "language": {
-                    "description": "BCP 47 language tag for content at this URL",
-                    "type": "string"
-                  },
                   "type": {
+                    "type": "string",
                     "const": "url",
-                    "description": "Indicates this is a URL reference",
-                    "type": "string"
+                    "description": "Indicates this is a URL reference"
                   },
                   "value": {
-                    "description": "Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')",
+                    "type": "string",
                     "format": "uri",
-                    "type": "string"
+                    "description": "Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
                   }
                 },
                 "required": [
                   "type",
                   "value"
-                ],
-                "type": "object"
+                ]
               },
               {
                 "$ref": "artifact.json",
@@ -40,35 +100,35 @@
               }
             ]
           },
-          "type": "array"
+          "description": "Content that passes the standards"
         },
-        "pass": {
-          "description": "Content that passes the standards",
+        "fail": {
+          "type": "array",
           "items": {
             "oneOf": [
               {
+                "type": "object",
                 "description": "URL reference - specific page to fetch and evaluate",
                 "properties": {
-                  "language": {
-                    "description": "BCP 47 language tag for content at this URL",
-                    "type": "string"
-                  },
                   "type": {
+                    "type": "string",
                     "const": "url",
-                    "description": "Indicates this is a URL reference",
-                    "type": "string"
+                    "description": "Indicates this is a URL reference"
                   },
                   "value": {
-                    "description": "Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')",
+                    "type": "string",
                     "format": "uri",
-                    "type": "string"
+                    "description": "Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
                   }
                 },
                 "required": [
                   "type",
                   "value"
-                ],
-                "type": "object"
+                ]
               },
               {
                 "$ref": "artifact.json",
@@ -76,76 +136,39 @@
               }
             ]
           },
-          "type": "array"
+          "description": "Content that fails the standards"
         }
-      },
-      "type": "object"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      }
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for this request. Prevents duplicate content standards creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
-    },
-    "policy": {
-      "description": "Natural language policy describing acceptable and unacceptable content contexts. Used by LLMs and human reviewers to make judgments. Optional when registry_policy_ids is provided.",
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
-    "registry_policy_ids": {
-      "description": "Registry policy IDs to use as the evaluation basis for this content standard. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria. The 'policy' field becomes optional when registry_policy_ids is provided.",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "scope": {
-      "description": "Where this standards configuration applies",
-      "properties": {
-        "channels_any": {
-          "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic).",
-          "items": {
-            "$ref": "../enums/channels.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "countries_all": {
-          "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).",
-          "items": {
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "description": {
-          "description": "Human-readable description of this scope",
-          "type": "string"
-        },
-        "languages_any": {
-          "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
-          "items": {
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
-        }
-      },
-      "required": [
-        "languages_any"
-      ],
-      "type": "object"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
-    "scope",
-    "policy"
+    "idempotency_key",
+    "scope"
   ],
-  "title": "Create Content Standards Request",
-  "type": "object"
+  "anyOf": [
+    {
+      "required": [
+        "policies"
+      ]
+    },
+    {
+      "required": [
+        "registry_policy_ids"
+      ]
+    }
+  ],
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/create-content-standards-response.json b/schemas/cache/content-standards/create-content-standards-response.json
index 3a099c2ec..9cf0e2457 100644
--- a/schemas/cache/content-standards/create-content-standards-response.json
+++ b/schemas/cache/content-standards/create-content-standards-response.json
@@ -1,52 +1,52 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Content Standards Response",
   "description": "Response payload for creating a content standards configuration",
+  "type": "object",
   "oneOf": [
     {
+      "type": "object",
       "description": "Success response - returns the created standards identifier",
       "properties": {
+        "standards_id": {
+          "type": "string",
+          "description": "Unique identifier for the created standards configuration"
+        },
         "context": {
           "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "standards_id": {
-          "description": "Unique identifier for the created standards configuration",
-          "type": "string"
         }
       },
       "required": [
         "standards_id"
-      ],
-      "type": "object"
+      ]
     },
     {
+      "type": "object",
       "description": "Error response",
       "properties": {
+        "errors": {
+          "type": "array",
+          "items": {
+            "$ref": "../core/error.json"
+          }
+        },
         "conflicting_standards_id": {
-          "description": "If the error is a scope conflict, the ID of the existing standards that conflict",
-          "type": "string"
+          "type": "string",
+          "description": "If the error is a scope conflict, the ID of the existing standards that conflict"
         },
         "context": {
           "$ref": "../core/context.json"
         },
-        "errors": {
-          "items": {
-            "$ref": "../core/error.json"
-          },
-          "type": "array"
-        },
         "ext": {
           "$ref": "../core/ext.json"
         }
       },
       "required": [
         "errors"
-      ],
-      "type": "object"
+      ]
     }
-  ],
-  "title": "Create Content Standards Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/get-content-standards-request.json b/schemas/cache/content-standards/get-content-standards-request.json
index 4ee7f59e8..8f801db66 100644
--- a/schemas/cache/content-standards/get-content-standards-request.json
+++ b/schemas/cache/content-standards/get-content-standards-request.json
@@ -1,21 +1,27 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Content Standards Request",
   "description": "Request parameters for retrieving content safety policies",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "standards_id": {
+      "type": "string",
+      "description": "Identifier for the standards configuration to retrieve"
+    },
     "context": {
       "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
-    },
-    "standards_id": {
-      "description": "Identifier for the standards configuration to retrieve",
-      "type": "string"
     }
   },
   "required": [
     "standards_id"
-  ],
-  "title": "Get Content Standards Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/get-content-standards-response.json b/schemas/cache/content-standards/get-content-standards-response.json
index 31e949035..7e727e204 100644
--- a/schemas/cache/content-standards/get-content-standards-response.json
+++ b/schemas/cache/content-standards/get-content-standards-response.json
@@ -1,32 +1,38 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Content Standards Response",
   "description": "Response payload with content safety policies",
+  "type": "object",
   "oneOf": [
     {
+      "type": "object",
+      "description": "Success response - returns the content standards configuration",
       "allOf": [
         {
           "$ref": "content-standards.json"
         }
       ],
-      "description": "Success response - returns the content standards configuration",
       "properties": {
         "context": {
           "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
-      },
-      "type": "object"
+      }
     },
     {
+      "type": "object",
       "description": "Error response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
-          },
-          "type": "array"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -34,10 +40,7 @@
       },
       "required": [
         "errors"
-      ],
-      "type": "object"
+      ]
     }
-  ],
-  "title": "Get Content Standards Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/get-media-buy-artifacts-request.json b/schemas/cache/content-standards/get-media-buy-artifacts-request.json
index 346e410ad..9a33dac0a 100644
--- a/schemas/cache/content-standards/get-media-buy-artifacts-request.json
+++ b/schemas/cache/content-standards/get-media-buy-artifacts-request.json
@@ -1,72 +1,78 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buy Artifacts Request",
   "description": "Request parameters for retrieving content artifacts from a media buy for validation",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Filter artifacts to a specific account. When omitted, returns artifacts across all accessible accounts."
     },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "failures_only": {
-      "default": false,
-      "description": "When true, only return artifacts where the seller's local model returned local_verdict: 'fail'. Useful for auditing false positives. Not useful when the seller does not run a local evaluation model (all verdicts are 'unevaluated').",
-      "type": "boolean"
-    },
     "media_buy_id": {
-      "description": "Media buy to get artifacts from",
-      "type": "string"
+      "type": "string",
+      "description": "Media buy to get artifacts from"
     },
     "package_ids": {
-      "description": "Filter to specific packages within the media buy",
+      "type": "array",
       "items": {
         "type": "string"
       },
       "minItems": 1,
-      "type": "array"
+      "description": "Filter to specific packages within the media buy"
     },
-    "pagination": {
-      "additionalProperties": false,
-      "description": "Pagination parameters. Uses higher limits than standard pagination because artifact result sets can be very large.",
-      "properties": {
-        "cursor": {
-          "description": "Opaque cursor from a previous response to fetch the next page",
-          "type": "string"
-        },
-        "max_results": {
-          "default": 1000,
-          "description": "Maximum number of artifacts to return per page",
-          "maximum": 10000,
-          "minimum": 1,
-          "type": "integer"
-        }
-      },
-      "type": "object"
+    "failures_only": {
+      "type": "boolean",
+      "description": "When true, only return artifacts where the seller's local model returned local_verdict: 'fail'. Useful for auditing false positives. Not useful when the seller does not run a local evaluation model (all verdicts are 'unevaluated').",
+      "default": false
     },
     "time_range": {
+      "type": "object",
       "description": "Filter to specific time period",
       "properties": {
-        "end": {
-          "description": "End of time range (exclusive)",
+        "start": {
+          "type": "string",
           "format": "date-time",
-          "type": "string"
+          "description": "Start of time range (inclusive)"
         },
-        "start": {
-          "description": "Start of time range (inclusive)",
+        "end": {
+          "type": "string",
           "format": "date-time",
-          "type": "string"
+          "description": "End of time range (exclusive)"
+        }
+      }
+    },
+    "pagination": {
+      "type": "object",
+      "description": "Pagination parameters. Uses higher limits than standard pagination because artifact result sets can be very large.",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 10000,
+          "default": 1000,
+          "description": "Maximum number of artifacts to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
         }
       },
-      "type": "object"
+      "additionalProperties": false
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "media_buy_id"
-  ],
-  "title": "Get Media Buy Artifacts Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/get-media-buy-artifacts-response.json b/schemas/cache/content-standards/get-media-buy-artifacts-response.json
index d619add57..f3e443cc6 100644
--- a/schemas/cache/content-standards/get-media-buy-artifacts-response.json
+++ b/schemas/cache/content-standards/get-media-buy-artifacts-response.json
@@ -1,124 +1,127 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Media Buy Artifacts Response",
   "description": "Response containing content artifacts from a media buy for validation",
+  "type": "object",
   "oneOf": [
     {
+      "type": "object",
       "description": "Success response with artifacts",
       "properties": {
+        "media_buy_id": {
+          "type": "string",
+          "description": "Media buy these artifacts belong to"
+        },
         "artifacts": {
+          "type": "array",
           "description": "Delivery records with full artifact content",
           "items": {
+            "type": "object",
             "properties": {
+              "record_id": {
+                "type": "string",
+                "description": "Unique identifier for this delivery record"
+              },
+              "timestamp": {
+                "type": "string",
+                "format": "date-time",
+                "description": "When the delivery occurred"
+              },
+              "package_id": {
+                "type": "string",
+                "description": "Which package this delivery belongs to"
+              },
               "artifact": {
                 "$ref": "artifact.json",
                 "description": "Full artifact with content assets"
               },
+              "country": {
+                "type": "string",
+                "description": "ISO 3166-1 alpha-2 country code where delivery occurred"
+              },
+              "channel": {
+                "type": "string",
+                "description": "Channel type (e.g., display, video, audio, social)"
+              },
               "brand_context": {
+                "type": "object",
                 "description": "Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.",
                 "properties": {
                   "brand_id": {
-                    "description": "Brand identifier",
-                    "type": "string"
+                    "type": "string",
+                    "description": "Brand identifier"
                   },
                   "sku_id": {
-                    "description": "Product/SKU identifier if applicable",
-                    "type": "string"
+                    "type": "string",
+                    "description": "Product/SKU identifier if applicable"
                   }
-                },
-                "type": "object"
-              },
-              "channel": {
-                "description": "Channel type (e.g., display, video, audio, social)",
-                "type": "string"
-              },
-              "country": {
-                "description": "ISO 3166-1 alpha-2 country code where delivery occurred",
-                "type": "string"
+                }
               },
               "local_verdict": {
-                "description": "Seller's local model verdict for this artifact",
+                "type": "string",
                 "enum": [
                   "pass",
                   "fail",
                   "unevaluated"
                 ],
-                "type": "string"
-              },
-              "package_id": {
-                "description": "Which package this delivery belongs to",
-                "type": "string"
-              },
-              "record_id": {
-                "description": "Unique identifier for this delivery record",
-                "type": "string"
-              },
-              "timestamp": {
-                "description": "When the delivery occurred",
-                "format": "date-time",
-                "type": "string"
+                "description": "Seller's local model verdict for this artifact"
               }
             },
             "required": [
               "record_id",
               "artifact"
-            ],
-            "type": "object"
-          },
-          "type": "array"
+            ]
+          }
         },
         "collection_info": {
+          "type": "object",
           "description": "Information about artifact collection for this media buy. Sampling is configured at buy creation time \u2014 this reports what was actually collected.",
           "properties": {
-            "effective_rate": {
-              "description": "Actual collection rate achieved (total_collected / total_deliveries)",
-              "type": "number"
-            },
-            "returned_count": {
-              "description": "Number of artifacts in this response (may be less than total_collected due to pagination or filters)",
-              "type": "integer"
+            "total_deliveries": {
+              "type": "integer",
+              "description": "Total deliveries in the requested time range"
             },
             "total_collected": {
-              "description": "Total artifacts collected (per the buy's sampling configuration)",
-              "type": "integer"
+              "type": "integer",
+              "description": "Total artifacts collected (per the buy's sampling configuration)"
             },
-            "total_deliveries": {
-              "description": "Total deliveries in the requested time range",
-              "type": "integer"
+            "returned_count": {
+              "type": "integer",
+              "description": "Number of artifacts in this response (may be less than total_collected due to pagination or filters)"
+            },
+            "effective_rate": {
+              "type": "number",
+              "description": "Actual collection rate achieved (total_collected / total_deliveries)"
             }
-          },
-          "type": "object"
+          }
+        },
+        "pagination": {
+          "$ref": "../core/pagination-response.json"
         },
         "context": {
           "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "media_buy_id": {
-          "description": "Media buy these artifacts belong to",
-          "type": "string"
-        },
-        "pagination": {
-          "$ref": "../core/pagination-response.json"
         }
       },
       "required": [
         "media_buy_id",
         "artifacts"
-      ],
-      "type": "object"
+      ]
     },
     {
+      "type": "object",
       "description": "Error response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
-          },
-          "type": "array"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -126,10 +129,7 @@
       },
       "required": [
         "errors"
-      ],
-      "type": "object"
+      ]
     }
-  ],
-  "title": "Get Media Buy Artifacts Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/list-content-standards-request.json b/schemas/cache/content-standards/list-content-standards-request.json
index cbdf56207..031806666 100644
--- a/schemas/cache/content-standards/list-content-standards-request.json
+++ b/schemas/cache/content-standards/list-content-standards-request.json
@@ -1,42 +1,48 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Content Standards Request",
   "description": "Request parameters for listing content standards configurations",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "channels": {
-      "description": "Filter by channel",
+      "type": "array",
       "items": {
         "$ref": "../enums/channels.json"
       },
       "minItems": 1,
-      "type": "array"
-    },
-    "context": {
-      "$ref": "../core/context.json"
+      "description": "Filter by channel"
     },
-    "countries": {
-      "description": "Filter by ISO 3166-1 alpha-2 country codes",
+    "languages": {
+      "type": "array",
       "items": {
         "type": "string"
       },
       "minItems": 1,
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      "description": "Filter by BCP 47 language tags"
     },
-    "languages": {
-      "description": "Filter by BCP 47 language tags",
+    "countries": {
+      "type": "array",
       "items": {
         "type": "string"
       },
       "minItems": 1,
-      "type": "array"
+      "description": "Filter by ISO 3166-1 alpha-2 country codes"
     },
     "pagination": {
       "$ref": "../core/pagination-request.json"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "List Content Standards Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/list-content-standards-response.json b/schemas/cache/content-standards/list-content-standards-response.json
index 5423cb7a7..093e18681 100644
--- a/schemas/cache/content-standards/list-content-standards-response.json
+++ b/schemas/cache/content-standards/list-content-standards-response.json
@@ -1,43 +1,46 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Content Standards Response",
   "description": "Response payload with list of content standards configurations",
+  "type": "object",
   "oneOf": [
     {
+      "type": "object",
       "description": "Success response - returns array of content standards",
       "properties": {
+        "standards": {
+          "type": "array",
+          "items": {
+            "$ref": "content-standards.json"
+          },
+          "description": "Array of content standards configurations matching the filter criteria"
+        },
+        "pagination": {
+          "$ref": "../core/pagination-response.json"
+        },
         "context": {
           "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "pagination": {
-          "$ref": "../core/pagination-response.json"
-        },
-        "standards": {
-          "description": "Array of content standards configurations matching the filter criteria",
-          "items": {
-            "$ref": "content-standards.json"
-          },
-          "type": "array"
         }
       },
       "required": [
         "standards"
-      ],
-      "type": "object"
+      ]
     },
     {
+      "type": "object",
       "description": "Error response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
-          },
-          "type": "array"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -45,10 +48,7 @@
       },
       "required": [
         "errors"
-      ],
-      "type": "object"
+      ]
     }
-  ],
-  "title": "List Content Standards Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/update-content-standards-request.json b/schemas/cache/content-standards/update-content-standards-request.json
index eb21f9d8d..27e24c748 100644
--- a/schemas/cache/content-standards/update-content-standards-request.json
+++ b/schemas/cache/content-standards/update-content-standards-request.json
@@ -1,38 +1,99 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Update Content Standards Request",
   "description": "Request parameters for updating an existing content standards configuration. Creates a new version.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "standards_id": {
+      "type": "string",
+      "description": "ID of the standards configuration to update"
+    },
+    "scope": {
+      "type": "object",
+      "description": "Updated scope for where this standards configuration applies",
+      "properties": {
+        "countries_all": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic)."
+        },
+        "channels_any": {
+          "type": "array",
+          "items": {
+            "$ref": "../enums/channels.json"
+          },
+          "minItems": 1,
+          "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic)."
+        },
+        "languages_any": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards."
+        },
+        "description": {
+          "type": "string",
+          "description": "Human-readable description of this scope"
+        }
+      }
+    },
+    "registry_policy_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Registry policy IDs to use as the evaluation basis. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria."
+    },
+    "policies": {
+      "type": "array",
+      "description": "Updated bespoke policies for this content-standards configuration, using the same shape as registry entries. Replaces the existing policies array; use stable policy_ids to track policies across versions. Combines with registry_policy_ids. Bespoke policy_ids MUST be flat (no colons/slashes).",
+      "items": {
+        "$ref": "../governance/policy-entry.json"
+      },
+      "minItems": 1
+    },
     "calibration_exemplars": {
+      "type": "object",
       "description": "Updated training/test set to calibrate policy interpretation. Use URL references for pages to be fetched and analyzed, or full artifacts for pre-extracted content.",
       "properties": {
-        "fail": {
-          "description": "Content that fails the standards",
+        "pass": {
+          "type": "array",
           "items": {
             "oneOf": [
               {
+                "type": "object",
                 "description": "URL reference - specific page to fetch and evaluate",
                 "properties": {
-                  "language": {
-                    "description": "BCP 47 language tag for content at this URL",
-                    "type": "string"
-                  },
                   "type": {
+                    "type": "string",
                     "const": "url",
-                    "description": "Indicates this is a URL reference",
-                    "type": "string"
+                    "description": "Indicates this is a URL reference"
                   },
                   "value": {
-                    "description": "Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')",
+                    "type": "string",
                     "format": "uri",
-                    "type": "string"
+                    "description": "Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
                   }
                 },
                 "required": [
                   "type",
                   "value"
-                ],
-                "type": "object"
+                ]
               },
               {
                 "$ref": "artifact.json",
@@ -40,35 +101,35 @@
               }
             ]
           },
-          "type": "array"
+          "description": "Content that passes the standards"
         },
-        "pass": {
-          "description": "Content that passes the standards",
+        "fail": {
+          "type": "array",
           "items": {
             "oneOf": [
               {
+                "type": "object",
                 "description": "URL reference - specific page to fetch and evaluate",
                 "properties": {
-                  "language": {
-                    "description": "BCP 47 language tag for content at this URL",
-                    "type": "string"
-                  },
                   "type": {
+                    "type": "string",
                     "const": "url",
-                    "description": "Indicates this is a URL reference",
-                    "type": "string"
+                    "description": "Indicates this is a URL reference"
                   },
                   "value": {
-                    "description": "Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')",
+                    "type": "string",
                     "format": "uri",
-                    "type": "string"
+                    "description": "Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+                  },
+                  "language": {
+                    "type": "string",
+                    "description": "BCP 47 language tag for content at this URL"
                   }
                 },
                 "required": [
                   "type",
                   "value"
-                ],
-                "type": "object"
+                ]
               },
               {
                 "$ref": "artifact.json",
@@ -76,10 +137,9 @@
               }
             ]
           },
-          "type": "array"
+          "description": "Content that fails the standards"
         }
-      },
-      "type": "object"
+      }
     },
     "context": {
       "$ref": "../core/context.json"
@@ -88,64 +148,16 @@
       "$ref": "../core/ext.json"
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
-    },
-    "policy": {
-      "description": "Updated natural language policy describing acceptable and unacceptable content contexts.",
-      "type": "string"
-    },
-    "registry_policy_ids": {
-      "description": "Registry policy IDs to use as the evaluation basis. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria.",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "scope": {
-      "description": "Updated scope for where this standards configuration applies",
-      "properties": {
-        "channels_any": {
-          "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic).",
-          "items": {
-            "$ref": "../enums/channels.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "countries_all": {
-          "description": "ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).",
-          "items": {
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "description": {
-          "description": "Human-readable description of this scope",
-          "type": "string"
-        },
-        "languages_any": {
-          "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
-          "items": {
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "standards_id": {
-      "description": "ID of the standards configuration to update",
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     }
   },
   "required": [
+    "idempotency_key",
     "standards_id"
   ],
-  "title": "Update Content Standards Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/update-content-standards-response.json b/schemas/cache/content-standards/update-content-standards-response.json
index 56aa8f3f2..54c252aa2 100644
--- a/schemas/cache/content-standards/update-content-standards-response.json
+++ b/schemas/cache/content-standards/update-content-standards-response.json
@@ -1,67 +1,67 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Content Standards Response",
   "description": "Response from updating a content standards configuration",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "UpdateContentStandardsSuccess",
+      "type": "object",
       "properties": {
+        "success": {
+          "type": "boolean",
+          "const": true,
+          "description": "Indicates the update was applied successfully"
+        },
+        "standards_id": {
+          "type": "string",
+          "description": "ID of the updated standards configuration"
+        },
         "context": {
           "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "standards_id": {
-          "description": "ID of the updated standards configuration",
-          "type": "string"
-        },
-        "success": {
-          "const": true,
-          "description": "Indicates the update was applied successfully",
-          "type": "boolean"
         }
       },
       "required": [
         "success",
         "standards_id"
       ],
-      "title": "UpdateContentStandardsSuccess",
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "title": "UpdateContentStandardsError",
+      "type": "object",
       "properties": {
-        "conflicting_standards_id": {
-          "description": "If scope change conflicts with another configuration, the ID of the conflicting standards",
-          "type": "string"
-        },
-        "context": {
-          "$ref": "../core/context.json"
+        "success": {
+          "type": "boolean",
+          "const": false,
+          "description": "Indicates the update failed"
         },
         "errors": {
-          "description": "Errors that occurred during the update",
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "description": "Errors that occurred during the update",
+          "minItems": 1
+        },
+        "conflicting_standards_id": {
+          "type": "string",
+          "description": "If scope change conflicts with another configuration, the ID of the conflicting standards"
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "success": {
-          "const": false,
-          "description": "Indicates the update failed",
-          "type": "boolean"
         }
       },
       "required": [
         "success",
         "errors"
       ],
-      "title": "UpdateContentStandardsError",
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Update Content Standards Response"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/validate-content-delivery-request.json b/schemas/cache/content-standards/validate-content-delivery-request.json
index 94d4ee150..7a04eafc7 100644
--- a/schemas/cache/content-standards/validate-content-delivery-request.json
+++ b/schemas/cache/content-standards/validate-content-delivery-request.json
@@ -1,89 +1,95 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Content Delivery Request",
   "description": "Request parameters for batch validating delivery records against content safety policies",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "feature_ids": {
-      "description": "Specific features to evaluate (defaults to all)",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "include_passed": {
-      "default": true,
-      "description": "Include passed records in results",
-      "type": "boolean"
+    "standards_id": {
+      "type": "string",
+      "description": "Standards configuration to validate against"
     },
     "records": {
+      "type": "array",
       "description": "Delivery records to validate (max 10,000)",
+      "minItems": 1,
+      "maxItems": 10000,
       "items": {
+        "type": "object",
         "properties": {
+          "record_id": {
+            "type": "string",
+            "description": "Unique identifier for this delivery record"
+          },
+          "media_buy_id": {
+            "type": "string",
+            "description": "Media buy this record belongs to (when batching across multiple buys)"
+          },
+          "timestamp": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the delivery occurred"
+          },
           "artifact": {
             "$ref": "artifact.json",
             "description": "Artifact where ad was delivered"
           },
+          "country": {
+            "type": "string",
+            "description": "ISO 3166-1 alpha-2 country code where delivery occurred"
+          },
+          "channel": {
+            "type": "string",
+            "description": "Channel type (e.g., display, video, audio, social)"
+          },
           "brand_context": {
+            "type": "object",
             "description": "Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.",
             "properties": {
               "brand_id": {
-                "description": "Brand identifier",
-                "type": "string"
+                "type": "string",
+                "description": "Brand identifier"
               },
               "sku_id": {
-                "description": "Product/SKU identifier if applicable",
-                "type": "string"
+                "type": "string",
+                "description": "Product/SKU identifier if applicable"
               }
-            },
-            "type": "object"
-          },
-          "channel": {
-            "description": "Channel type (e.g., display, video, audio, social)",
-            "type": "string"
-          },
-          "country": {
-            "description": "ISO 3166-1 alpha-2 country code where delivery occurred",
-            "type": "string"
-          },
-          "media_buy_id": {
-            "description": "Media buy this record belongs to (when batching across multiple buys)",
-            "type": "string"
-          },
-          "record_id": {
-            "description": "Unique identifier for this delivery record",
-            "type": "string"
-          },
-          "timestamp": {
-            "description": "When the delivery occurred",
-            "format": "date-time",
-            "type": "string"
+            }
           }
         },
         "required": [
           "record_id",
           "artifact"
-        ],
-        "type": "object"
+        ]
+      }
+    },
+    "feature_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
       },
-      "maxItems": 10000,
       "minItems": 1,
-      "type": "array"
+      "description": "Specific features to evaluate (defaults to all)"
     },
-    "standards_id": {
-      "description": "Standards configuration to validate against",
-      "type": "string"
+    "include_passed": {
+      "type": "boolean",
+      "default": true,
+      "description": "Include passed records in results"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "standards_id",
     "records"
-  ],
-  "title": "Validate Content Delivery Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/content-standards/validate-content-delivery-response.json b/schemas/cache/content-standards/validate-content-delivery-response.json
index 3c322463f..6d366aa79 100644
--- a/schemas/cache/content-standards/validate-content-delivery-response.json
+++ b/schemas/cache/content-standards/validate-content-delivery-response.json
@@ -1,112 +1,122 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Content Delivery Response",
   "description": "Response payload with per-record verdicts and optional feature breakdown",
+  "type": "object",
   "oneOf": [
     {
+      "type": "object",
       "description": "Success response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+        "summary": {
+          "type": "object",
+          "description": "Summary counts across all records",
+          "properties": {
+            "total_records": {
+              "type": "integer"
+            },
+            "passed_records": {
+              "type": "integer"
+            },
+            "failed_records": {
+              "type": "integer"
+            }
+          },
+          "required": [
+            "total_records",
+            "passed_records",
+            "failed_records"
+          ]
         },
         "results": {
+          "type": "array",
           "description": "Per-record evaluation results",
           "items": {
+            "type": "object",
             "properties": {
+              "record_id": {
+                "type": "string",
+                "description": "Which delivery record was evaluated"
+              },
+              "verdict": {
+                "type": "string",
+                "enum": [
+                  "pass",
+                  "fail"
+                ],
+                "description": "Overall pass/fail verdict for this record"
+              },
               "features": {
-                "description": "Optional feature-level breakdown",
+                "type": "array",
+                "description": "Per-feature breakdown. When present, SHOULD include all failed and warning features. MAY include passed features. Oracle pattern: exposes verdict + rule pointer, never the seller's threshold or the caller's submitted value (the seller authored the content standards).",
                 "items": {
+                  "type": "object",
                   "properties": {
                     "feature_id": {
-                      "type": "string"
-                    },
-                    "message": {
-                      "type": "string"
-                    },
-                    "rule_id": {
-                      "description": "Which rule triggered this result (e.g., GARM category, Scope3 standard)",
-                      "type": "string"
+                      "type": "string",
+                      "description": "Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'image_dpi'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact', 'delivery:authorization'. Reserved prefixes: 'record:', 'delivery:'."
                     },
                     "status": {
+                      "type": "string",
                       "enum": [
                         "passed",
                         "failed",
                         "warning",
                         "unevaluated"
-                      ],
-                      "type": "string"
+                      ]
                     },
-                    "value": {}
+                    "policy_id": {
+                      "type": "string",
+                      "description": "Registry policy ID that triggered this result. Present when the result originates from a specific registry policy (e.g., GARM category, CSBS standard). Enables programmatic routing by looking up the policy in the registry."
+                    },
+                    "explanation": {
+                      "type": "string",
+                      "description": "Directional human-readable explanation (e.g., 'Below minimum resolution for display placement'). Avoid quantitative thresholds \u2014 the evaluator is the oracle."
+                    },
+                    "confidence": {
+                      "type": "number",
+                      "minimum": 0,
+                      "maximum": 1,
+                      "description": "Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones."
+                    }
                   },
                   "required": [
                     "feature_id",
                     "status"
-                  ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "record_id": {
-                "description": "Which delivery record was evaluated",
-                "type": "string"
-              },
-              "verdict": {
-                "description": "Overall pass/fail verdict for this record",
-                "enum": [
-                  "pass",
-                  "fail"
-                ],
-                "type": "string"
+                  ]
+                }
               }
             },
             "required": [
               "record_id",
               "verdict"
-            ],
-            "type": "object"
-          },
-          "type": "array"
+            ]
+          }
         },
-        "summary": {
-          "description": "Summary counts across all records",
-          "properties": {
-            "failed_records": {
-              "type": "integer"
-            },
-            "passed_records": {
-              "type": "integer"
-            },
-            "total_records": {
-              "type": "integer"
-            }
-          },
-          "required": [
-            "total_records",
-            "passed_records",
-            "failed_records"
-          ],
-          "type": "object"
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "summary",
         "results"
-      ],
-      "type": "object"
+      ]
     },
     {
+      "type": "object",
       "description": "Error response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
-          },
-          "type": "array"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -114,10 +124,7 @@
       },
       "required": [
         "errors"
-      ],
-      "type": "object"
+      ]
     }
-  ],
-  "title": "Validate Content Delivery Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/account-ref.json b/schemas/cache/core/account-ref.json
index c80aa84ea..23a3d2ef4 100644
--- a/schemas/cache/core/account-ref.json
+++ b/schemas/cache/core/account-ref.json
@@ -1,68 +1,68 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Account Reference",
   "description": "Reference to an account by seller-assigned ID or natural key. Use account_id for explicit accounts (require_operator_auth: true, discovered via list_accounts). Use the natural key (brand + operator) for implicit accounts (require_operator_auth: false, declared via sync_accounts). For sandbox: explicit accounts use account_id (pre-existing test account), implicit accounts use the natural key with sandbox: true.",
-  "examples": [
-    {
-      "account_id": "acc_acme_001"
-    },
-    {
-      "brand": {
-        "domain": "acme-corp.com"
-      },
-      "operator": "acme-corp.com"
-    },
-    {
-      "brand": {
-        "brand_id": "spark",
-        "domain": "nova-brands.com"
-      },
-      "operator": "pinnacle-media.com"
-    },
-    {
-      "brand": {
-        "domain": "acme-corp.com"
-      },
-      "operator": "acme-corp.com",
-      "sandbox": true
-    }
-  ],
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": false,
       "properties": {
         "account_id": {
-          "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)",
-          "type": "string"
+          "type": "string",
+          "description": "Seller-assigned account identifier (from sync_accounts or list_accounts)"
         }
       },
       "required": [
         "account_id"
-      ]
+      ],
+      "additionalProperties": false
     },
     {
-      "additionalProperties": false,
       "properties": {
         "brand": {
           "$ref": "brand-ref.json",
           "description": "Brand reference identifying the advertiser"
         },
         "operator": {
+          "type": "string",
           "description": "Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "sandbox": {
-          "default": false,
+          "type": "boolean",
           "description": "When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).",
-          "type": "boolean"
+          "default": false
         }
       },
       "required": [
         "brand",
         "operator"
-      ]
+      ],
+      "additionalProperties": false
     }
   ],
-  "title": "Account Reference",
-  "type": "object"
+  "examples": [
+    {
+      "account_id": "acc_acme_001"
+    },
+    {
+      "brand": {
+        "domain": "acme-corp.com"
+      },
+      "operator": "acme-corp.com"
+    },
+    {
+      "brand": {
+        "domain": "nova-brands.com",
+        "brand_id": "spark"
+      },
+      "operator": "pinnacle-media.com"
+    },
+    {
+      "brand": {
+        "domain": "acme-corp.com"
+      },
+      "operator": "acme-corp.com",
+      "sandbox": true
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/account.json b/schemas/cache/core/account.json
index 877b5ba07..fd609b3e0 100644
--- a/schemas/cache/core/account.json
+++ b/schemas/cache/core/account.json
@@ -1,274 +1,235 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Account",
   "description": "A billing account representing the relationship between a buyer and seller. The account determines rate cards, payment terms, and billing entity.",
-  "examples": [
-    {
-      "data": {
-        "account_id": "acc_acme_direct",
-        "account_scope": "brand",
-        "advertiser": "Acme Corp",
-        "billing": "operator",
-        "brand": {
-          "domain": "acme-corp.com"
-        },
-        "name": "Acme",
-        "operator": "acme-corp.com",
-        "payment_terms": "net_30",
-        "rate_card": "acme_vip_2024",
-        "status": "active"
-      },
-      "description": "Direct advertiser account"
-    },
-    {
-      "data": {
-        "account_id": "acc_acme_pinnacle",
-        "account_scope": "operator_brand",
-        "advertiser": "Acme Corp",
-        "billing": "operator",
-        "billing_proxy": "Pinnacle Media",
-        "brand": {
-          "domain": "acme-corp.com"
-        },
-        "name": "Acme c/o Pinnacle",
-        "operator": "pinnacle-media.com",
-        "payment_terms": "net_60",
-        "rate_card": "acme_vip_2024",
-        "status": "active"
-      },
-      "description": "Advertiser account with agency billing proxy"
+  "type": "object",
+  "properties": {
+    "account_id": {
+      "type": "string",
+      "description": "Unique identifier for this account"
     },
-    {
-      "data": {
-        "account_id": "acc_pinnacle",
-        "account_scope": "operator",
-        "advertiser": "Pinnacle Media",
-        "billing": "operator",
-        "brand": {
-          "domain": "pinnacle-media.com"
-        },
-        "name": "Pinnacle",
-        "operator": "pinnacle-media.com",
-        "payment_terms": "net_45",
-        "rate_card": "agency_standard",
-        "status": "active"
-      },
-      "description": "Agency as direct buyer"
+    "name": {
+      "type": "string",
+      "description": "Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')"
     },
-    {
-      "data": {
-        "account_id": "acc_spark_001",
-        "account_scope": "operator_brand",
-        "advertiser": "Nova Brands",
-        "billing": "agent",
-        "brand": {
-          "brand_id": "spark",
-          "domain": "nova-brands.com"
-        },
-        "name": "Spark (via Pinnacle)",
-        "operator": "pinnacle-media.com",
-        "payment_terms": "net_30",
-        "status": "active"
-      },
-      "description": "Account with brand identity and operator (via sync_accounts)"
+    "advertiser": {
+      "type": "string",
+      "description": "The advertiser whose rates apply to this account"
     },
-    {
-      "data": {
-        "account_id": "acc_glow_pending",
-        "account_scope": "brand",
-        "advertiser": "Nova Brands",
-        "billing": "operator",
-        "brand": {
-          "brand_id": "glow",
-          "domain": "nova-brands.com"
-        },
-        "name": "Glow",
-        "operator": "pinnacle-media.com",
-        "status": "pending_approval"
-      },
-      "description": "Pending account awaiting seller approval"
+    "billing_proxy": {
+      "type": "string",
+      "description": "Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)"
     },
-    {
-      "data": {
-        "account_id": "acc_acme_direct_bill",
-        "account_scope": "operator_brand",
-        "advertiser": "Acme Corp",
-        "billing": "advertiser",
-        "billing_entity": {
-          "address": {
-            "city": "Munich",
-            "country": "DE",
-            "postal_code": "80331",
-            "street": "Hauptstrasse 42"
-          },
-          "contacts": [
-            {
-              "email": "billing@acme-corp.com",
-              "name": "AP Department",
-              "role": "billing"
-            }
-          ],
-          "legal_name": "Acme Corporation GmbH",
-          "vat_id": "DE987654321"
-        },
-        "brand": {
-          "domain": "acme-corp.com"
-        },
-        "name": "Acme (billed direct)",
-        "operator": "pinnacle-media.com",
-        "payment_terms": "net_30",
-        "status": "active"
-      },
-      "description": "Agency operates but advertiser is billed directly with structured billing entity"
-    }
-  ],
-  "properties": {
-    "account_id": {
-      "description": "Unique identifier for this account",
-      "type": "string"
+    "status": {
+      "$ref": "../enums/account-status.json",
+      "description": "Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state."
     },
-    "account_scope": {
-      "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association.",
-      "enum": [
-        "operator",
-        "brand",
-        "operator_brand",
-        "agent"
-      ],
-      "type": "string"
+    "brand": {
+      "$ref": "brand-ref.json",
+      "description": "Brand reference identifying the advertiser"
     },
-    "advertiser": {
-      "description": "The advertiser whose rates apply to this account",
-      "type": "string"
+    "operator": {
+      "type": "string",
+      "description": "Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
     },
     "billing": {
-      "description": "Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details.",
+      "type": "string",
       "enum": [
         "operator",
         "agent",
         "advertiser"
       ],
-      "type": "string"
+      "description": "Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
     },
     "billing_entity": {
       "$ref": "business-entity.json",
       "description": "Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only)."
     },
-    "billing_proxy": {
-      "description": "Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)",
-      "type": "string"
+    "rate_card": {
+      "type": "string",
+      "description": "Identifier for the rate card applied to this account"
     },
-    "brand": {
-      "$ref": "brand-ref.json",
-      "description": "Brand reference identifying the advertiser"
+    "payment_terms": {
+      "type": "string",
+      "enum": [
+        "net_15",
+        "net_30",
+        "net_45",
+        "net_60",
+        "net_90",
+        "prepay"
+      ],
+      "description": "Payment terms agreed for this account. Binding for all invoices when the account is active."
     },
     "credit_limit": {
+      "type": "object",
       "description": "Maximum outstanding balance allowed",
       "properties": {
         "amount": {
-          "minimum": 0,
-          "type": "number"
+          "type": "number",
+          "minimum": 0
         },
         "currency": {
-          "pattern": "^[A-Z]{3}$",
-          "type": "string"
+          "type": "string",
+          "pattern": "^[A-Z]{3}$"
         }
       },
       "required": [
         "amount",
         "currency"
+      ]
+    },
+    "setup": {
+      "type": "object",
+      "description": "Present when status is 'pending_approval'. Contains next steps for completing account activation.",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL where the human can complete the required action (credit application, legal agreement, add funds)."
+        },
+        "message": {
+          "type": "string",
+          "description": "Human-readable description of what's needed."
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When this setup link expires."
+        }
+      },
+      "required": [
+        "message"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "ext": {
-      "$ref": "ext.json"
+    "account_scope": {
+      "type": "string",
+      "enum": [
+        "operator",
+        "brand",
+        "operator_brand",
+        "agent"
+      ],
+      "description": "How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
     },
     "governance_agents": {
+      "type": "array",
       "description": "Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses \u2014 use sync_governance to set or update credentials.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
+          "url": {
+            "type": "string",
+            "format": "uri",
+            "pattern": "^https://",
+            "description": "Governance agent endpoint URL. Must use HTTPS."
+          },
           "categories": {
-            "description": "Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+            "type": "array",
             "items": {
+              "type": "string",
               "maxLength": 64,
-              "pattern": "^[a-z][a-z0-9_]*$",
-              "type": "string"
+              "pattern": "^[a-z][a-z0-9_]*$"
             },
-            "maxItems": 20,
-            "type": "array"
-          },
-          "url": {
-            "description": "Governance agent endpoint URL. Must use HTTPS.",
-            "format": "uri",
-            "pattern": "^https://",
-            "type": "string"
+            "description": "Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+            "maxItems": 20
           }
         },
         "required": [
           "url"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "maxItems": 10,
-      "type": "array"
-    },
-    "name": {
-      "description": "Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')",
-      "type": "string"
-    },
-    "operator": {
-      "description": "Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
-      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-      "type": "string"
-    },
-    "payment_terms": {
-      "description": "Payment terms agreed for this account. Binding for all invoices when the account is active.",
-      "enum": [
-        "net_15",
-        "net_30",
-        "net_45",
-        "net_60",
-        "net_90",
-        "prepay"
-      ],
-      "type": "string"
-    },
-    "rate_card": {
-      "description": "Identifier for the rate card applied to this account",
-      "type": "string"
-    },
-    "sandbox": {
-      "description": "When true, this is a sandbox account \u2014 no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account.",
-      "type": "boolean"
+      "maxItems": 10
     },
-    "setup": {
-      "additionalProperties": true,
-      "description": "Present when status is 'pending_approval'. Contains next steps for completing account activation.",
+    "reporting_bucket": {
+      "type": "object",
+      "description": "Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix \u2014 bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities).",
       "properties": {
-        "expires_at": {
-          "description": "When this setup link expires.",
-          "format": "date-time",
-          "type": "string"
+        "protocol": {
+          "$ref": "../enums/cloud-storage-protocol.json",
+          "description": "Cloud storage protocol"
         },
-        "message": {
-          "description": "Human-readable description of what's needed.",
-          "type": "string"
+        "bucket": {
+          "type": "string",
+          "description": "Bucket or container name",
+          "minLength": 3,
+          "maxLength": 63,
+          "pattern": "^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$"
         },
-        "url": {
-          "description": "URL where the human can complete the required action (credit application, legal agreement, add funds).",
+        "prefix": {
+          "type": "string",
+          "description": "Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.",
+          "maxLength": 512,
+          "pattern": "^[a-zA-Z0-9/_.-]+$",
+          "examples": [
+            "accounts/pinnacle/adcp",
+            "reporting/2024"
+          ]
+        },
+        "region": {
+          "type": "string",
+          "description": "Cloud region for the bucket",
+          "maxLength": 64,
+          "pattern": "^[a-z0-9-]+$",
+          "examples": [
+            "us-east-1",
+            "europe-west1"
+          ]
+        },
+        "format": {
+          "type": "string",
+          "enum": [
+            "jsonl",
+            "csv",
+            "parquet",
+            "avro",
+            "orc"
+          ],
+          "description": "File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).",
+          "default": "jsonl"
+        },
+        "compression": {
+          "type": "string",
+          "enum": [
+            "gzip",
+            "none"
+          ],
+          "description": "Compression applied to delivered files",
+          "default": "gzip"
+        },
+        "file_retention_days": {
+          "type": "integer",
+          "description": "How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.",
+          "minimum": 1,
+          "examples": [
+            14,
+            30,
+            90
+          ]
+        },
+        "setup_instructions": {
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "pattern": "^https://",
+          "description": "URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation \u2014 buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery."
         }
       },
       "required": [
-        "message"
+        "protocol",
+        "bucket",
+        "file_retention_days"
       ],
-      "type": "object"
+      "additionalProperties": false
     },
-    "status": {
-      "$ref": "../enums/account-status.json",
-      "description": "Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state."
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this is a sandbox account \u2014 no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account."
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -276,6 +237,125 @@
     "name",
     "status"
   ],
-  "title": "Account",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Direct advertiser account",
+      "data": {
+        "account_id": "acc_acme_direct",
+        "name": "Acme",
+        "advertiser": "Acme Corp",
+        "brand": {
+          "domain": "acme-corp.com"
+        },
+        "operator": "acme-corp.com",
+        "status": "active",
+        "billing": "operator",
+        "account_scope": "brand",
+        "rate_card": "acme_vip_2024",
+        "payment_terms": "net_30"
+      }
+    },
+    {
+      "description": "Advertiser account with agency billing proxy",
+      "data": {
+        "account_id": "acc_acme_pinnacle",
+        "name": "Acme c/o Pinnacle",
+        "advertiser": "Acme Corp",
+        "billing_proxy": "Pinnacle Media",
+        "brand": {
+          "domain": "acme-corp.com"
+        },
+        "operator": "pinnacle-media.com",
+        "status": "active",
+        "billing": "operator",
+        "account_scope": "operator_brand",
+        "rate_card": "acme_vip_2024",
+        "payment_terms": "net_60"
+      }
+    },
+    {
+      "description": "Agency as direct buyer",
+      "data": {
+        "account_id": "acc_pinnacle",
+        "name": "Pinnacle",
+        "advertiser": "Pinnacle Media",
+        "brand": {
+          "domain": "pinnacle-media.com"
+        },
+        "operator": "pinnacle-media.com",
+        "status": "active",
+        "billing": "operator",
+        "account_scope": "operator",
+        "rate_card": "agency_standard",
+        "payment_terms": "net_45"
+      }
+    },
+    {
+      "description": "Account with brand identity and operator (via sync_accounts)",
+      "data": {
+        "account_id": "acc_spark_001",
+        "name": "Spark (via Pinnacle)",
+        "advertiser": "Nova Brands",
+        "status": "active",
+        "brand": {
+          "domain": "nova-brands.com",
+          "brand_id": "spark"
+        },
+        "operator": "pinnacle-media.com",
+        "billing": "agent",
+        "account_scope": "operator_brand",
+        "payment_terms": "net_30"
+      }
+    },
+    {
+      "description": "Pending account awaiting seller approval",
+      "data": {
+        "account_id": "acc_glow_pending",
+        "name": "Glow",
+        "advertiser": "Nova Brands",
+        "status": "pending_approval",
+        "brand": {
+          "domain": "nova-brands.com",
+          "brand_id": "glow"
+        },
+        "operator": "pinnacle-media.com",
+        "billing": "operator",
+        "account_scope": "brand"
+      }
+    },
+    {
+      "description": "Agency operates but advertiser is billed directly with structured billing entity",
+      "data": {
+        "account_id": "acc_acme_direct_bill",
+        "name": "Acme (billed direct)",
+        "advertiser": "Acme Corp",
+        "brand": {
+          "domain": "acme-corp.com"
+        },
+        "operator": "pinnacle-media.com",
+        "status": "active",
+        "billing": "advertiser",
+        "billing_entity": {
+          "legal_name": "Acme Corporation GmbH",
+          "vat_id": "DE987654321",
+          "address": {
+            "street": "Hauptstrasse 42",
+            "city": "Munich",
+            "postal_code": "80331",
+            "country": "DE"
+          },
+          "contacts": [
+            {
+              "role": "billing",
+              "name": "AP Department",
+              "email": "billing@acme-corp.com"
+            }
+          ]
+        },
+        "account_scope": "operator_brand",
+        "payment_terms": "net_30"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/activation-key.json b/schemas/cache/core/activation-key.json
index 6ad5331b5..986b4677a 100644
--- a/schemas/cache/core/activation-key.json
+++ b/schemas/cache/core/activation-key.json
@@ -1,49 +1,49 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Activation Key",
   "description": "Universal identifier for using a signal on a destination platform. Can be either a segment ID or a key-value pair depending on the platform's targeting mechanism.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
       "properties": {
-        "segment_id": {
-          "description": "The platform-specific segment identifier to use in campaign targeting",
-          "type": "string"
-        },
         "type": {
+          "type": "string",
           "const": "segment_id",
-          "description": "Segment ID based targeting",
-          "type": "string"
+          "description": "Segment ID based targeting"
+        },
+        "segment_id": {
+          "type": "string",
+          "description": "The platform-specific segment identifier to use in campaign targeting"
         }
       },
       "required": [
         "type",
         "segment_id"
-      ]
+      ],
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
       "properties": {
-        "key": {
-          "description": "The targeting parameter key",
-          "type": "string"
-        },
         "type": {
+          "type": "string",
           "const": "key_value",
-          "description": "Key-value pair based targeting",
-          "type": "string"
+          "description": "Key-value pair based targeting"
+        },
+        "key": {
+          "type": "string",
+          "description": "The targeting parameter key"
         },
         "value": {
-          "description": "The targeting parameter value",
-          "type": "string"
+          "type": "string",
+          "description": "The targeting parameter value"
         }
       },
       "required": [
         "type",
         "key",
         "value"
-      ]
+      ],
+      "additionalProperties": true
     }
-  ],
-  "title": "Activation Key",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/agent-encryption-key.json b/schemas/cache/core/agent-encryption-key.json
new file mode 100644
index 000000000..ea51dc2de
--- /dev/null
+++ b/schemas/cache/core/agent-encryption-key.json
@@ -0,0 +1,40 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Agent Encryption Key",
+  "description": "X25519 public key for HPKE encryption. Used for TMPX exposure token encryption with HPKE mode_base.",
+  "type": "object",
+  "properties": {
+    "kid": {
+      "type": "string",
+      "description": "Key identifier. Opaque \u2014 MUST NOT encode geographic or deployment information.",
+      "maxLength": 8
+    },
+    "kty": {
+      "type": "string",
+      "const": "OKP",
+      "description": "JWK key type. Must be OKP for X25519."
+    },
+    "crv": {
+      "type": "string",
+      "const": "X25519",
+      "description": "Curve name. Must be X25519 for TMPX encryption."
+    },
+    "use": {
+      "type": "string",
+      "const": "enc",
+      "description": "JWK use value. Must be enc for encryption keys."
+    },
+    "x": {
+      "type": "string",
+      "description": "Base64url-encoded X25519 public key (32 bytes)."
+    }
+  },
+  "required": [
+    "kid",
+    "kty",
+    "crv",
+    "use",
+    "x"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/core/agent-signing-key.json b/schemas/cache/core/agent-signing-key.json
index f2f1a9798..fb6fe0a3f 100644
--- a/schemas/cache/core/agent-signing-key.json
+++ b/schemas/cache/core/agent-signing-key.json
@@ -1,49 +1,54 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Agent Signing Key",
   "description": "Publisher-attested public key material for an authorized agent. Buyers use these keys to verify signed agent responses against the trust anchor published in adagents.json rather than trusting key discovery from the agent domain alone.",
+  "type": "object",
   "properties": {
-    "alg": {
-      "description": "Expected signing algorithm for this key, such as 'EdDSA' or 'RS256'.",
-      "type": "string"
-    },
-    "crv": {
-      "description": "Curve name for OKP or EC keys, such as 'Ed25519' or 'P-256'.",
-      "type": "string"
-    },
-    "e": {
-      "description": "Base64url-encoded RSA public exponent.",
-      "type": "string"
-    },
     "kid": {
-      "description": "Key identifier for selecting the correct signing key.",
-      "type": "string"
+      "type": "string",
+      "description": "Key identifier for selecting the correct signing key."
     },
     "kty": {
-      "description": "JWK key type, such as 'OKP', 'EC', or 'RSA'.",
-      "type": "string"
+      "type": "string",
+      "description": "JWK key type, such as 'OKP', 'EC', or 'RSA'."
     },
-    "n": {
-      "description": "Base64url-encoded RSA modulus.",
-      "type": "string"
+    "alg": {
+      "type": "string",
+      "description": "Expected signing algorithm for this key, such as 'EdDSA' or 'RS256'."
     },
     "use": {
-      "description": "Optional JWK use value. Typically 'sig' for signing keys.",
-      "type": "string"
+      "type": "string",
+      "description": "Optional JWK use value. Typically 'sig' for signing keys."
+    },
+    "crv": {
+      "type": "string",
+      "description": "Curve name for OKP or EC keys, such as 'Ed25519' or 'P-256'."
     },
     "x": {
-      "description": "Base64url-encoded public key x coordinate or public key value for OKP keys.",
-      "type": "string"
+      "type": "string",
+      "description": "Base64url-encoded public key x coordinate or public key value for OKP keys."
     },
     "y": {
-      "description": "Base64url-encoded public key y coordinate for EC keys.",
-      "type": "string"
+      "type": "string",
+      "description": "Base64url-encoded public key y coordinate for EC keys."
+    },
+    "n": {
+      "type": "string",
+      "description": "Base64url-encoded RSA modulus."
+    },
+    "e": {
+      "type": "string",
+      "description": "Base64url-encoded RSA public exponent."
+    },
+    "revoked_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Optional revocation timestamp. When present, verifiers MUST reject any signature produced with this key whose signing epoch (or equivalent time reference) is at or after this timestamp. The key may continue to appear in the trust anchor during a grace period so caches that have not yet refreshed still find the key and can evaluate the revocation marker. Keys past their revocation can be removed once the cache TTL (recommended: 5 minutes) has elapsed across all verifiers."
     }
   },
   "required": [
     "kid",
     "kty"
   ],
-  "title": "Agent Signing Key",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/app-item.json b/schemas/cache/core/app-item.json
new file mode 100644
index 000000000..7e0463386
--- /dev/null
+++ b/schemas/cache/core/app-item.json
@@ -0,0 +1,169 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "App Item",
+  "description": "A mobile application within an app-type catalog. Carries the app metadata and store identifiers that platforms use for app install campaigns and re-engagement ads. Maps to Google App Campaigns, Apple Search Ads, Meta App Ads, TikTok App Campaigns, and Snapchat App Install Ads. Each item represents one app on one platform \u2014 iOS and Android variants are separate items.",
+  "type": "object",
+  "properties": {
+    "app_id": {
+      "type": "string",
+      "description": "Buyer-assigned unique identifier for this app item. Used for catalog deduplication and content_ids matching on install and launch events."
+    },
+    "name": {
+      "type": "string",
+      "description": "App display name as shown in the store (e.g., 'Puzzle Quest: Match 3', 'Acme Banking')."
+    },
+    "platform": {
+      "type": "string",
+      "enum": [
+        "ios",
+        "android"
+      ],
+      "description": "Target platform. iOS and Android are separate items because they have distinct store identifiers and attribution mechanisms."
+    },
+    "bundle_id": {
+      "type": "string",
+      "description": "Reverse-domain bundle identifier (e.g., 'com.acmegames.puzzlequest'). The universal store identifier: required for Android (Google Play), also used for iOS MMP attribution, SKAN matching, and app-ads.txt verification. Distinct from app_id, which is a buyer-assigned catalog key."
+    },
+    "apple_id": {
+      "type": "string",
+      "pattern": "^[0-9]+$",
+      "description": "Numeric Apple App Store ID (e.g., '389801252'). Required for Apple Search Ads and iOS platforms that use the numeric ID rather than bundle_id."
+    },
+    "description": {
+      "type": "string",
+      "description": "App description. Platforms typically pull this from the store listing automatically; supply here to override or for platforms that require it in the request."
+    },
+    "category": {
+      "type": "string",
+      "description": "Primary store category (e.g., 'games', 'productivity', 'finance', 'health_fitness', 'social_networking')."
+    },
+    "genre": {
+      "type": "string",
+      "description": "Sub-genre within the category. Particularly relevant for games (e.g., 'puzzle', 'strategy', 'rpg', 'casual', 'simulation', 'action')."
+    },
+    "icon_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "App icon image URL. Typically 1024\u00d71024 px."
+    },
+    "screenshots": {
+      "type": "array",
+      "description": "App store screenshot URLs. Used by platforms for creative generation when native store assets are not available.",
+      "items": {
+        "type": "string",
+        "format": "uri"
+      },
+      "minItems": 1
+    },
+    "preview_video_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "App preview or gameplay video URL for use in video ad creatives."
+    },
+    "store_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Direct link to the app's store listing (Apple App Store or Google Play)."
+    },
+    "deep_link_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Deep link URI for re-engagement campaigns targeting existing users. Use Universal Links (iOS) or App Links (Android) where available (e.g., 'https://acmegames.com/app/level/5'). Falls back to URI scheme (e.g., 'acmegames://level/5') when universal links are not configured."
+    },
+    "price": {
+      "$ref": "price.json",
+      "description": "App download price. Set amount to 0 for free apps."
+    },
+    "rating": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 5,
+      "description": "Average store rating (0\u20135). Use 0 to indicate no ratings yet."
+    },
+    "rating_count": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Total number of store ratings."
+    },
+    "content_rating": {
+      "type": "string",
+      "description": "Age or content rating (e.g., '4+', '12+', 'Everyone', 'Teen', 'PEGI 12'). Format depends on store and region."
+    },
+    "tags": {
+      "type": "array",
+      "description": "Tags for filtering and targeting (e.g., 'multiplayer', 'offline', 'no-ads', 'subscription').",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this app. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (promotional hero), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1 for display), 'video' (gameplay or demo video). Supplements icon_url and screenshots for platform-specific format requirements.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
+  "required": [
+    "app_id",
+    "name",
+    "platform"
+  ],
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "iOS casual game targeting new installs",
+      "data": {
+        "app_id": "puzzlequest-ios",
+        "name": "Puzzle Quest: Match 3",
+        "platform": "ios",
+        "bundle_id": "com.acmegames.puzzlequest",
+        "apple_id": "1234567890",
+        "category": "games",
+        "genre": "puzzle",
+        "icon_url": "https://assets.acmegames.com/puzzlequest/icon-1024.png",
+        "store_url": "https://apps.apple.com/app/puzzle-quest-match-3/id1234567890",
+        "price": {
+          "amount": 0,
+          "currency": "USD"
+        },
+        "rating": 4.7,
+        "rating_count": 82000,
+        "content_rating": "4+",
+        "tags": [
+          "casual",
+          "offline"
+        ]
+      }
+    },
+    {
+      "description": "Android app with re-engagement deep links",
+      "data": {
+        "app_id": "acmebank-android",
+        "name": "Acme Banking",
+        "platform": "android",
+        "bundle_id": "com.acmefinancial.banking",
+        "category": "finance",
+        "icon_url": "https://assets.acmefinancial.com/app/icon.png",
+        "store_url": "https://play.google.com/store/apps/details?id=com.acmefinancial.banking",
+        "deep_link_url": "https://app.acmefinancial.com/offers",
+        "price": {
+          "amount": 0,
+          "currency": "USD"
+        },
+        "rating": 4.4,
+        "rating_count": 31500,
+        "content_rating": "Everyone",
+        "tags": [
+          "finance",
+          "banking"
+        ]
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/core/assets/audio-asset.json b/schemas/cache/core/assets/audio-asset.json
index 24eeda8ab..12817c48c 100644
--- a/schemas/cache/core/assets/audio-asset.json
+++ b/schemas/cache/core/assets/audio-asset.json
@@ -1,81 +1,81 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Audio Asset",
   "description": "Audio asset with URL and technical specifications",
+  "type": "object",
   "properties": {
-    "bit_depth": {
-      "description": "Bit depth",
-      "enum": [
-        16,
-        24,
-        32
-      ],
-      "type": "integer"
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to the audio asset"
     },
-    "bitrate_kbps": {
-      "description": "Bitrate in kilobits per second",
-      "minimum": 1,
-      "type": "integer"
+    "duration_ms": {
+      "type": "integer",
+      "description": "Audio duration in milliseconds",
+      "minimum": 0
+    },
+    "file_size_bytes": {
+      "type": "integer",
+      "description": "File size in bytes",
+      "minimum": 1
+    },
+    "container_format": {
+      "type": "string",
+      "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)"
+    },
+    "codec": {
+      "type": "string",
+      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)"
+    },
+    "sampling_rate_hz": {
+      "type": "integer",
+      "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)"
     },
     "channels": {
-      "description": "Channel configuration",
+      "type": "string",
       "enum": [
         "mono",
         "stereo",
         "5.1",
         "7.1"
       ],
-      "type": "string"
-    },
-    "codec": {
-      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)",
-      "type": "string"
-    },
-    "container_format": {
-      "description": "Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)",
-      "type": "string"
+      "description": "Channel configuration"
     },
-    "duration_ms": {
-      "description": "Audio duration in milliseconds",
-      "minimum": 0,
-      "type": "integer"
+    "bit_depth": {
+      "type": "integer",
+      "enum": [
+        16,
+        24,
+        32
+      ],
+      "description": "Bit depth"
     },
-    "file_size_bytes": {
-      "description": "File size in bytes",
-      "minimum": 1,
-      "type": "integer"
+    "bitrate_kbps": {
+      "type": "integer",
+      "description": "Bitrate in kilobits per second",
+      "minimum": 1
     },
     "loudness_lufs": {
-      "description": "Integrated loudness in LUFS",
-      "type": "number"
-    },
-    "provenance": {
-      "$ref": "../../core/provenance.json",
-      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
+      "type": "number",
+      "description": "Integrated loudness in LUFS"
     },
-    "sampling_rate_hz": {
-      "description": "Sampling rate in Hz (e.g., 44100, 48000, 96000)",
-      "type": "integer"
+    "true_peak_dbfs": {
+      "type": "number",
+      "description": "True peak level in dBFS"
     },
     "transcript_url": {
-      "description": "URL to text transcript of the audio content",
-      "format": "uri",
       "type": "string",
+      "format": "uri",
+      "description": "URL to text transcript of the audio content",
       "x-accessibility": true
     },
-    "true_peak_dbfs": {
-      "description": "True peak level in dBFS",
-      "type": "number"
-    },
-    "url": {
-      "description": "URL to the audio asset",
-      "format": "uri",
-      "type": "string"
+    "provenance": {
+      "$ref": "../../core/provenance.json",
+      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     }
   },
   "required": [
     "url"
   ],
-  "title": "Audio Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/brief-asset.json b/schemas/cache/core/assets/brief-asset.json
index 9d4caa4a2..8b7591454 100644
--- a/schemas/cache/core/assets/brief-asset.json
+++ b/schemas/cache/core/assets/brief-asset.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Brief Asset",
+  "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
   "allOf": [
     {
       "$ref": "../../core/creative-brief.json"
     }
-  ],
-  "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
-  "title": "Brief Asset"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/catalog-asset.json b/schemas/cache/core/assets/catalog-asset.json
index 8f44df83e..68e6026f7 100644
--- a/schemas/cache/core/assets/catalog-asset.json
+++ b/schemas/cache/core/assets/catalog-asset.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Catalog Asset",
+  "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
   "allOf": [
     {
       "$ref": "../../core/catalog.json"
     }
-  ],
-  "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
-  "title": "Catalog Asset"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/css-asset.json b/schemas/cache/core/assets/css-asset.json
index 094a58e58..44e99ee8e 100644
--- a/schemas/cache/core/assets/css-asset.json
+++ b/schemas/cache/core/assets/css-asset.json
@@ -1,15 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CSS Asset",
   "description": "CSS stylesheet asset",
+  "type": "object",
   "properties": {
     "content": {
-      "description": "CSS content",
-      "type": "string"
+      "type": "string",
+      "description": "CSS content"
     },
     "media": {
-      "description": "CSS media query context (e.g., 'screen', 'print')",
-      "type": "string"
+      "type": "string",
+      "description": "CSS media query context (e.g., 'screen', 'print')"
     },
     "provenance": {
       "$ref": "../../core/provenance.json",
@@ -19,6 +20,5 @@
   "required": [
     "content"
   ],
-  "title": "CSS Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/daast-asset.json b/schemas/cache/core/assets/daast-asset.json
index 2e2f860c9..287d33dec 100644
--- a/schemas/cache/core/assets/daast-asset.json
+++ b/schemas/cache/core/assets/daast-asset.json
@@ -1,106 +1,106 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "DAAST Asset",
   "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "companion_ads": {
-          "description": "Whether companion display ads are included",
-          "type": "boolean"
+        "delivery_type": {
+          "type": "string",
+          "const": "url",
+          "description": "Discriminator indicating DAAST is delivered via URL endpoint"
+        },
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL endpoint that returns DAAST XML"
         },
         "daast_version": {
           "$ref": "../../enums/daast-version.json",
           "description": "DAAST specification version"
         },
-        "delivery_type": {
-          "const": "url",
-          "description": "Discriminator indicating DAAST is delivered via URL endpoint",
-          "type": "string"
-        },
         "duration_ms": {
+          "type": "integer",
           "description": "Expected audio duration in milliseconds (if known)",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "provenance": {
-          "$ref": "../../core/provenance.json",
-          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
+          "minimum": 0
         },
         "tracking_events": {
-          "description": "Tracking events supported by this DAAST tag",
+          "type": "array",
           "items": {
             "$ref": "../../enums/daast-tracking-event.json"
           },
-          "type": "array"
+          "description": "Tracking events supported by this DAAST tag"
+        },
+        "companion_ads": {
+          "type": "boolean",
+          "description": "Whether companion display ads are included"
         },
         "transcript_url": {
-          "description": "URL to text transcript of the audio content",
-          "format": "uri",
           "type": "string",
+          "format": "uri",
+          "description": "URL to text transcript of the audio content",
           "x-accessibility": true
         },
-        "url": {
-          "description": "URL endpoint that returns DAAST XML",
-          "format": "uri",
-          "type": "string"
+        "provenance": {
+          "$ref": "../../core/provenance.json",
+          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         }
       },
       "required": [
         "delivery_type",
         "url"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "companion_ads": {
-          "description": "Whether companion display ads are included",
-          "type": "boolean"
+        "delivery_type": {
+          "type": "string",
+          "const": "inline",
+          "description": "Discriminator indicating DAAST is delivered as inline XML content"
         },
         "content": {
-          "description": "Inline DAAST XML content",
-          "type": "string"
+          "type": "string",
+          "description": "Inline DAAST XML content"
         },
         "daast_version": {
           "$ref": "../../enums/daast-version.json",
           "description": "DAAST specification version"
         },
-        "delivery_type": {
-          "const": "inline",
-          "description": "Discriminator indicating DAAST is delivered as inline XML content",
-          "type": "string"
-        },
         "duration_ms": {
+          "type": "integer",
           "description": "Expected audio duration in milliseconds (if known)",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "provenance": {
-          "$ref": "../../core/provenance.json",
-          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
+          "minimum": 0
         },
         "tracking_events": {
-          "description": "Tracking events supported by this DAAST tag",
+          "type": "array",
           "items": {
             "$ref": "../../enums/daast-tracking-event.json"
           },
-          "type": "array"
+          "description": "Tracking events supported by this DAAST tag"
+        },
+        "companion_ads": {
+          "type": "boolean",
+          "description": "Whether companion display ads are included"
         },
         "transcript_url": {
-          "description": "URL to text transcript of the audio content",
-          "format": "uri",
           "type": "string",
+          "format": "uri",
+          "description": "URL to text transcript of the audio content",
           "x-accessibility": true
+        },
+        "provenance": {
+          "$ref": "../../core/provenance.json",
+          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         }
       },
       "required": [
         "delivery_type",
         "content"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "DAAST Asset"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/html-asset.json b/schemas/cache/core/assets/html-asset.json
index fd5a718ef..10d9a28da 100644
--- a/schemas/cache/core/assets/html-asset.json
+++ b/schemas/cache/core/assets/html-asset.json
@@ -1,47 +1,47 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "HTML Asset",
   "description": "HTML content asset",
+  "type": "object",
   "properties": {
+    "content": {
+      "type": "string",
+      "description": "HTML content"
+    },
+    "version": {
+      "type": "string",
+      "description": "HTML version (e.g., 'HTML5')"
+    },
     "accessibility": {
+      "type": "object",
       "description": "Self-declared accessibility properties for this opaque creative",
+      "x-accessibility": true,
       "properties": {
         "alt_text": {
-          "description": "Text alternative describing the creative content",
-          "type": "string"
+          "type": "string",
+          "description": "Text alternative describing the creative content"
         },
         "keyboard_navigable": {
-          "description": "Whether the creative can be fully operated via keyboard",
-          "type": "boolean"
+          "type": "boolean",
+          "description": "Whether the creative can be fully operated via keyboard"
         },
         "motion_control": {
-          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls",
-          "type": "boolean"
+          "type": "boolean",
+          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
         },
         "screen_reader_tested": {
-          "description": "Whether the creative has been tested with screen readers",
-          "type": "boolean"
+          "type": "boolean",
+          "description": "Whether the creative has been tested with screen readers"
         }
-      },
-      "type": "object",
-      "x-accessibility": true
-    },
-    "content": {
-      "description": "HTML content",
-      "type": "string"
+      }
     },
     "provenance": {
       "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
-    },
-    "version": {
-      "description": "HTML version (e.g., 'HTML5')",
-      "type": "string"
     }
   },
   "required": [
     "content"
   ],
-  "title": "HTML Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/image-asset.json b/schemas/cache/core/assets/image-asset.json
index ee5dcb0a9..93bc2c588 100644
--- a/schemas/cache/core/assets/image-asset.json
+++ b/schemas/cache/core/assets/image-asset.json
@@ -1,35 +1,36 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Image Asset",
   "description": "Image asset with URL and dimensions",
+  "type": "object",
   "properties": {
-    "alt_text": {
-      "description": "Alternative text for accessibility",
+    "url": {
       "type": "string",
-      "x-accessibility": true
+      "format": "uri",
+      "description": "URL to the image asset"
     },
-    "format": {
-      "description": "Image file format (jpg, png, gif, webp, etc.)",
-      "type": "string"
+    "width": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Width in pixels"
     },
     "height": {
-      "description": "Height in pixels",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Height in pixels"
+    },
+    "format": {
+      "type": "string",
+      "description": "Image file format (jpg, png, gif, webp, etc.)"
+    },
+    "alt_text": {
+      "type": "string",
+      "description": "Alternative text for accessibility",
+      "x-accessibility": true
     },
     "provenance": {
       "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
-    },
-    "url": {
-      "description": "URL to the image asset",
-      "format": "uri",
-      "type": "string"
-    },
-    "width": {
-      "description": "Width in pixels",
-      "minimum": 1,
-      "type": "integer"
     }
   },
   "required": [
@@ -37,6 +38,5 @@
     "width",
     "height"
   ],
-  "title": "Image Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/javascript-asset.json b/schemas/cache/core/assets/javascript-asset.json
index 0267b7ac7..4c7ba560a 100644
--- a/schemas/cache/core/assets/javascript-asset.json
+++ b/schemas/cache/core/assets/javascript-asset.json
@@ -1,38 +1,39 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "JavaScript Asset",
   "description": "JavaScript code asset",
+  "type": "object",
   "properties": {
+    "content": {
+      "type": "string",
+      "description": "JavaScript content"
+    },
+    "module_type": {
+      "$ref": "../../enums/javascript-module-type.json",
+      "description": "JavaScript module type"
+    },
     "accessibility": {
+      "type": "object",
       "description": "Self-declared accessibility properties for this opaque creative",
+      "x-accessibility": true,
       "properties": {
         "alt_text": {
-          "description": "Text alternative describing the creative content",
-          "type": "string"
+          "type": "string",
+          "description": "Text alternative describing the creative content"
         },
         "keyboard_navigable": {
-          "description": "Whether the creative can be fully operated via keyboard",
-          "type": "boolean"
+          "type": "boolean",
+          "description": "Whether the creative can be fully operated via keyboard"
         },
         "motion_control": {
-          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls",
-          "type": "boolean"
+          "type": "boolean",
+          "description": "Whether the creative respects prefers-reduced-motion or provides pause/stop controls"
         },
         "screen_reader_tested": {
-          "description": "Whether the creative has been tested with screen readers",
-          "type": "boolean"
+          "type": "boolean",
+          "description": "Whether the creative has been tested with screen readers"
         }
-      },
-      "type": "object",
-      "x-accessibility": true
-    },
-    "content": {
-      "description": "JavaScript content",
-      "type": "string"
-    },
-    "module_type": {
-      "$ref": "../../enums/javascript-module-type.json",
-      "description": "JavaScript module type"
+      }
     },
     "provenance": {
       "$ref": "../../core/provenance.json",
@@ -42,6 +43,5 @@
   "required": [
     "content"
   ],
-  "title": "JavaScript Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/markdown-asset.json b/schemas/cache/core/assets/markdown-asset.json
index a9ae34a02..7a6505660 100644
--- a/schemas/cache/core/assets/markdown-asset.json
+++ b/schemas/cache/core/assets/markdown-asset.json
@@ -1,30 +1,30 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Markdown Asset",
   "description": "Markdown-formatted text content following CommonMark specification",
+  "type": "object",
   "properties": {
-    "allow_raw_html": {
-      "default": false,
-      "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security.",
-      "type": "boolean"
-    },
     "content": {
-      "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions",
-      "type": "string"
+      "type": "string",
+      "description": "Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions"
     },
     "language": {
-      "description": "Language code (e.g., 'en', 'es', 'fr')",
-      "type": "string"
+      "type": "string",
+      "description": "Language code (e.g., 'en', 'es', 'fr')"
     },
     "markdown_flavor": {
       "$ref": "../../enums/markdown-flavor.json",
       "default": "commonmark",
       "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough."
+    },
+    "allow_raw_html": {
+      "type": "boolean",
+      "default": false,
+      "description": "Whether raw HTML blocks are allowed in the markdown. False recommended for security."
     }
   },
   "required": [
     "content"
   ],
-  "title": "Markdown Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/text-asset.json b/schemas/cache/core/assets/text-asset.json
index 2d12e0621..75a20bb89 100644
--- a/schemas/cache/core/assets/text-asset.json
+++ b/schemas/cache/core/assets/text-asset.json
@@ -1,15 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Text Asset",
   "description": "Text content asset",
+  "type": "object",
   "properties": {
     "content": {
-      "description": "Text content",
-      "type": "string"
+      "type": "string",
+      "description": "Text content"
     },
     "language": {
-      "description": "Language code (e.g., 'en', 'es', 'fr')",
-      "type": "string"
+      "type": "string",
+      "description": "Language code (e.g., 'en', 'es', 'fr')"
     },
     "provenance": {
       "$ref": "../../core/provenance.json",
@@ -19,6 +20,5 @@
   "required": [
     "content"
   ],
-  "title": "Text Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/url-asset.json b/schemas/cache/core/assets/url-asset.json
index 733ff2b85..da65a7705 100644
--- a/schemas/cache/core/assets/url-asset.json
+++ b/schemas/cache/core/assets/url-asset.json
@@ -1,29 +1,29 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "URL Asset",
   "description": "URL reference asset",
+  "type": "object",
   "properties": {
-    "description": {
-      "description": "Description of what this URL points to",
-      "type": "string"
-    },
-    "provenance": {
-      "$ref": "../../core/provenance.json",
-      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
-    },
     "url": {
-      "description": "URL reference",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL reference"
     },
     "url_type": {
       "$ref": "../../enums/url-asset-type.json",
       "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of what this URL points to"
+    },
+    "provenance": {
+      "$ref": "../../core/provenance.json",
+      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     }
   },
   "required": [
     "url"
   ],
-  "title": "URL Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/vast-asset.json b/schemas/cache/core/assets/vast-asset.json
index 566e4ca49..0cfc85963 100644
--- a/schemas/cache/core/assets/vast-asset.json
+++ b/schemas/cache/core/assets/vast-asset.json
@@ -1,118 +1,118 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "VAST Asset",
   "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "audio_description_url": {
-          "description": "URL to audio description track for visually impaired users",
-          "format": "uri",
+        "delivery_type": {
           "type": "string",
-          "x-accessibility": true
+          "const": "url",
+          "description": "Discriminator indicating VAST is delivered via URL endpoint"
         },
-        "captions_url": {
-          "description": "URL to captions file (WebVTT, SRT, etc.)",
-          "format": "uri",
+        "url": {
           "type": "string",
-          "x-accessibility": true
+          "format": "uri",
+          "description": "URL endpoint that returns VAST XML"
         },
-        "delivery_type": {
-          "const": "url",
-          "description": "Discriminator indicating VAST is delivered via URL endpoint",
-          "type": "string"
+        "vast_version": {
+          "$ref": "../../enums/vast-version.json",
+          "description": "VAST specification version"
+        },
+        "vpaid_enabled": {
+          "type": "boolean",
+          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
         },
         "duration_ms": {
+          "type": "integer",
           "description": "Expected video duration in milliseconds (if known)",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "provenance": {
-          "$ref": "../../core/provenance.json",
-          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
+          "minimum": 0
         },
         "tracking_events": {
-          "description": "Tracking events supported by this VAST tag",
+          "type": "array",
           "items": {
             "$ref": "../../enums/vast-tracking-event.json"
           },
-          "type": "array"
+          "description": "Tracking events supported by this VAST tag"
         },
-        "url": {
-          "description": "URL endpoint that returns VAST XML",
+        "captions_url": {
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL to captions file (WebVTT, SRT, etc.)",
+          "x-accessibility": true
         },
-        "vast_version": {
-          "$ref": "../../enums/vast-version.json",
-          "description": "VAST specification version"
+        "audio_description_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to audio description track for visually impaired users",
+          "x-accessibility": true
         },
-        "vpaid_enabled": {
-          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported",
-          "type": "boolean"
+        "provenance": {
+          "$ref": "../../core/provenance.json",
+          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         }
       },
       "required": [
         "delivery_type",
         "url"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "audio_description_url": {
-          "description": "URL to audio description track for visually impaired users",
-          "format": "uri",
+        "delivery_type": {
           "type": "string",
-          "x-accessibility": true
+          "const": "inline",
+          "description": "Discriminator indicating VAST is delivered as inline XML content"
         },
-        "captions_url": {
-          "description": "URL to captions file (WebVTT, SRT, etc.)",
-          "format": "uri",
+        "content": {
           "type": "string",
-          "x-accessibility": true
+          "description": "Inline VAST XML content"
         },
-        "content": {
-          "description": "Inline VAST XML content",
-          "type": "string"
+        "vast_version": {
+          "$ref": "../../enums/vast-version.json",
+          "description": "VAST specification version"
         },
-        "delivery_type": {
-          "const": "inline",
-          "description": "Discriminator indicating VAST is delivered as inline XML content",
-          "type": "string"
+        "vpaid_enabled": {
+          "type": "boolean",
+          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported"
         },
         "duration_ms": {
+          "type": "integer",
           "description": "Expected video duration in milliseconds (if known)",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "provenance": {
-          "$ref": "../../core/provenance.json",
-          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
+          "minimum": 0
         },
         "tracking_events": {
-          "description": "Tracking events supported by this VAST tag",
+          "type": "array",
           "items": {
             "$ref": "../../enums/vast-tracking-event.json"
           },
-          "type": "array"
+          "description": "Tracking events supported by this VAST tag"
         },
-        "vast_version": {
-          "$ref": "../../enums/vast-version.json",
-          "description": "VAST specification version"
+        "captions_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to captions file (WebVTT, SRT, etc.)",
+          "x-accessibility": true
         },
-        "vpaid_enabled": {
-          "description": "Whether VPAID (Video Player-Ad Interface Definition) is supported",
-          "type": "boolean"
+        "audio_description_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to audio description track for visually impaired users",
+          "x-accessibility": true
+        },
+        "provenance": {
+          "$ref": "../../core/provenance.json",
+          "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         }
       },
       "required": [
         "delivery_type",
         "content"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "VAST Asset"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/video-asset.json b/schemas/cache/core/assets/video-asset.json
index 394e84aae..ce734c34c 100644
--- a/schemas/cache/core/assets/video-asset.json
+++ b/schemas/cache/core/assets/video-asset.json
@@ -1,71 +1,69 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Video Asset",
   "description": "Video asset with URL and technical specifications including audio track properties",
+  "type": "object",
   "properties": {
-    "audio_bit_depth": {
-      "description": "Audio bit depth",
-      "enum": [
-        16,
-        24,
-        32
-      ],
-      "type": "integer"
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to the video asset"
     },
-    "audio_bitrate_kbps": {
-      "description": "Audio bitrate in kilobits per second",
+    "width": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Width in pixels"
     },
-    "audio_channels": {
-      "description": "Audio channel configuration",
-      "enum": [
-        "mono",
-        "stereo",
-        "5.1",
-        "7.1"
-      ],
-      "type": "string"
+    "height": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Height in pixels"
     },
-    "audio_codec": {
-      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)",
-      "type": "string"
+    "duration_ms": {
+      "type": "integer",
+      "description": "Video duration in milliseconds",
+      "minimum": 1
     },
-    "audio_description_url": {
-      "description": "URL to audio description track for visually impaired users",
-      "format": "uri",
+    "file_size_bytes": {
+      "type": "integer",
+      "description": "File size in bytes",
+      "minimum": 1
+    },
+    "container_format": {
       "type": "string",
-      "x-accessibility": true
+      "description": "Video container format (mp4, webm, mov, etc.)"
     },
-    "audio_loudness_lufs": {
-      "description": "Integrated loudness in LUFS",
-      "type": "number"
+    "video_codec": {
+      "type": "string",
+      "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)"
     },
-    "audio_sampling_rate_hz": {
-      "description": "Audio sampling rate in Hz (e.g., 44100, 48000)",
-      "type": "integer"
+    "video_bitrate_kbps": {
+      "type": "integer",
+      "description": "Video stream bitrate in kilobits per second",
+      "minimum": 1
     },
-    "audio_true_peak_dbfs": {
-      "description": "True peak level in dBFS",
-      "type": "number"
+    "frame_rate": {
+      "type": "string",
+      "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
     },
-    "captions_url": {
-      "description": "URL to captions file (WebVTT, SRT, etc.)",
-      "format": "uri",
+    "frame_rate_type": {
       "type": "string",
-      "x-accessibility": true
+      "enum": [
+        "constant",
+        "variable"
+      ],
+      "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate"
     },
-    "chroma_subsampling": {
-      "description": "Chroma subsampling format",
+    "scan_type": {
+      "type": "string",
       "enum": [
-        "4:2:0",
-        "4:2:2",
-        "4:4:4"
+        "progressive",
+        "interlaced"
       ],
-      "type": "string"
+      "description": "Scan type of the video"
     },
     "color_space": {
-      "description": "Color space of the video",
+      "type": "string",
       "enum": [
         "rec709",
         "rec2020",
@@ -73,119 +71,122 @@
         "srgb",
         "dci_p3"
       ],
-      "type": "string"
-    },
-    "container_format": {
-      "description": "Video container format (mp4, webm, mov, etc.)",
-      "type": "string"
-    },
-    "duration_ms": {
-      "description": "Video duration in milliseconds",
-      "minimum": 1,
-      "type": "integer"
+      "description": "Color space of the video"
     },
-    "file_size_bytes": {
-      "description": "File size in bytes",
-      "minimum": 1,
-      "type": "integer"
+    "hdr_format": {
+      "type": "string",
+      "enum": [
+        "sdr",
+        "hdr10",
+        "hdr10_plus",
+        "hlg",
+        "dolby_vision"
+      ],
+      "description": "HDR format if applicable, or 'sdr' for standard dynamic range"
     },
-    "frame_rate": {
-      "description": "Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')",
-      "type": "string"
+    "chroma_subsampling": {
+      "type": "string",
+      "enum": [
+        "4:2:0",
+        "4:2:2",
+        "4:4:4"
+      ],
+      "description": "Chroma subsampling format"
     },
-    "frame_rate_type": {
-      "description": "Whether the video uses constant (CFR) or variable (VFR) frame rate",
+    "video_bit_depth": {
+      "type": "integer",
       "enum": [
-        "constant",
-        "variable"
+        8,
+        10,
+        12
       ],
-      "type": "string"
+      "description": "Video bit depth"
     },
     "gop_interval_seconds": {
-      "description": "GOP/keyframe interval in seconds",
-      "type": "number"
+      "type": "number",
+      "description": "GOP/keyframe interval in seconds"
     },
     "gop_type": {
-      "description": "GOP structure type",
+      "type": "string",
       "enum": [
         "closed",
         "open"
       ],
-      "type": "string"
-    },
-    "has_audio": {
-      "description": "Whether the video contains an audio track",
-      "type": "boolean"
-    },
-    "hdr_format": {
-      "description": "HDR format if applicable, or 'sdr' for standard dynamic range",
-      "enum": [
-        "sdr",
-        "hdr10",
-        "hdr10_plus",
-        "hlg",
-        "dolby_vision"
-      ],
-      "type": "string"
-    },
-    "height": {
-      "description": "Height in pixels",
-      "minimum": 1,
-      "type": "integer"
+      "description": "GOP structure type"
     },
     "moov_atom_position": {
-      "description": "Position of moov atom in MP4 container",
+      "type": "string",
       "enum": [
         "start",
         "end"
       ],
-      "type": "string"
+      "description": "Position of moov atom in MP4 container"
     },
-    "provenance": {
-      "$ref": "../../core/provenance.json",
-      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
+    "has_audio": {
+      "type": "boolean",
+      "description": "Whether the video contains an audio track"
     },
-    "scan_type": {
-      "description": "Scan type of the video",
+    "audio_codec": {
+      "type": "string",
+      "description": "Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)"
+    },
+    "audio_sampling_rate_hz": {
+      "type": "integer",
+      "description": "Audio sampling rate in Hz (e.g., 44100, 48000)"
+    },
+    "audio_channels": {
+      "type": "string",
       "enum": [
-        "progressive",
-        "interlaced"
+        "mono",
+        "stereo",
+        "5.1",
+        "7.1"
       ],
-      "type": "string"
+      "description": "Audio channel configuration"
     },
-    "transcript_url": {
-      "description": "URL to text transcript of the video content",
-      "format": "uri",
+    "audio_bit_depth": {
+      "type": "integer",
+      "enum": [
+        16,
+        24,
+        32
+      ],
+      "description": "Audio bit depth"
+    },
+    "audio_bitrate_kbps": {
+      "type": "integer",
+      "description": "Audio bitrate in kilobits per second",
+      "minimum": 1
+    },
+    "audio_loudness_lufs": {
+      "type": "number",
+      "description": "Integrated loudness in LUFS"
+    },
+    "audio_true_peak_dbfs": {
+      "type": "number",
+      "description": "True peak level in dBFS"
+    },
+    "captions_url": {
       "type": "string",
+      "format": "uri",
+      "description": "URL to captions file (WebVTT, SRT, etc.)",
       "x-accessibility": true
     },
-    "url": {
-      "description": "URL to the video asset",
+    "transcript_url": {
+      "type": "string",
       "format": "uri",
-      "type": "string"
-    },
-    "video_bit_depth": {
-      "description": "Video bit depth",
-      "enum": [
-        8,
-        10,
-        12
-      ],
-      "type": "integer"
-    },
-    "video_bitrate_kbps": {
-      "description": "Video stream bitrate in kilobits per second",
-      "minimum": 1,
-      "type": "integer"
+      "description": "URL to text transcript of the video content",
+      "x-accessibility": true
     },
-    "video_codec": {
-      "description": "Video codec used (h264, h265, vp9, av1, prores, etc.)",
-      "type": "string"
+    "audio_description_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to audio description track for visually impaired users",
+      "x-accessibility": true
     },
-    "width": {
-      "description": "Width in pixels",
-      "minimum": 1,
-      "type": "integer"
+    "provenance": {
+      "$ref": "../../core/provenance.json",
+      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     }
   },
   "required": [
@@ -193,6 +194,5 @@
     "width",
     "height"
   ],
-  "title": "Video Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/assets/webhook-asset.json b/schemas/cache/core/assets/webhook-asset.json
index 58e923a5b..0902e0520 100644
--- a/schemas/cache/core/assets/webhook-asset.json
+++ b/schemas/cache/core/assets/webhook-asset.json
@@ -1,83 +1,84 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Webhook Asset",
   "description": "Webhook for server-side dynamic content rendering (DCO)",
+  "type": "object",
   "properties": {
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Webhook URL to call for dynamic content"
+    },
     "method": {
       "$ref": "../../enums/http-method.json",
       "default": "POST",
       "description": "HTTP method"
     },
-    "provenance": {
-      "$ref": "../../core/provenance.json",
-      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
+    "timeout_ms": {
+      "type": "integer",
+      "minimum": 10,
+      "maximum": 5000,
+      "default": 500,
+      "description": "Maximum time to wait for response in milliseconds"
+    },
+    "supported_macros": {
+      "type": "array",
+      "items": {
+        "oneOf": [
+          {
+            "$ref": "../../enums/universal-macro.json"
+          },
+          {
+            "type": "string",
+            "description": "Custom or publisher-specific macro name"
+          }
+        ]
+      },
+      "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list."
     },
     "required_macros": {
-      "description": "Universal macros that must be provided for webhook to function",
+      "type": "array",
       "items": {
         "oneOf": [
           {
             "$ref": "../../enums/universal-macro.json"
           },
           {
-            "description": "Custom or publisher-specific macro name",
-            "type": "string"
+            "type": "string",
+            "description": "Custom or publisher-specific macro name"
           }
         ]
       },
-      "type": "array"
+      "description": "Universal macros that must be provided for webhook to function"
     },
     "response_type": {
       "$ref": "../../enums/webhook-response-type.json",
       "description": "Expected content type of webhook response"
     },
     "security": {
+      "type": "object",
       "description": "Security configuration for webhook calls",
       "properties": {
-        "api_key_header": {
-          "description": "Header name for API key (e.g., 'X-API-Key')",
-          "type": "string"
-        },
-        "hmac_header": {
-          "description": "Header name for HMAC signature (e.g., 'X-Signature')",
-          "type": "string"
-        },
         "method": {
           "$ref": "../../enums/webhook-security-method.json",
           "description": "Authentication method"
+        },
+        "hmac_header": {
+          "type": "string",
+          "description": "Header name for HMAC signature (e.g., 'X-Signature')"
+        },
+        "api_key_header": {
+          "type": "string",
+          "description": "Header name for API key (e.g., 'X-API-Key')"
         }
       },
       "required": [
         "method"
-      ],
-      "type": "object"
-    },
-    "supported_macros": {
-      "description": "Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.",
-      "items": {
-        "oneOf": [
-          {
-            "$ref": "../../enums/universal-macro.json"
-          },
-          {
-            "description": "Custom or publisher-specific macro name",
-            "type": "string"
-          }
-        ]
-      },
-      "type": "array"
-    },
-    "timeout_ms": {
-      "default": 500,
-      "description": "Maximum time to wait for response in milliseconds",
-      "maximum": 5000,
-      "minimum": 10,
-      "type": "integer"
+      ]
     },
-    "url": {
-      "description": "Webhook URL to call for dynamic content",
-      "format": "uri",
-      "type": "string"
+    "provenance": {
+      "$ref": "../../core/provenance.json",
+      "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     }
   },
   "required": [
@@ -85,6 +86,5 @@
     "response_type",
     "security"
   ],
-  "title": "Webhook Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/async-response-data.json b/schemas/cache/core/async-response-data.json
index ab3cb708f..d13070252 100644
--- a/schemas/cache/core/async-response-data.json
+++ b/schemas/cache/core/async-response-data.json
@@ -1,127 +1,127 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "AdCP Async Response Data",
+  "description": "Union of all possible data payloads for async task webhook responses. For completed/failed statuses, use the main task response schema. For working/input-required/submitted, use the status-specific schemas.",
   "anyOf": [
     {
-      "$ref": "../media-buy/get-products-response.json",
+      "title": "GetProductsResponse",
       "description": "Response for completed or failed get_products",
-      "title": "GetProductsResponse"
+      "$ref": "../media-buy/get-products-response.json"
     },
     {
-      "$ref": "../media-buy/get-products-async-response-working.json",
+      "title": "GetProductsAsyncWorking",
       "description": "Progress data for working get_products",
-      "title": "GetProductsAsyncWorking"
+      "$ref": "../media-buy/get-products-async-response-working.json"
     },
     {
-      "$ref": "../media-buy/get-products-async-response-input-required.json",
+      "title": "GetProductsAsyncInputRequired",
       "description": "Input requirements for get_products needing clarification",
-      "title": "GetProductsAsyncInputRequired"
+      "$ref": "../media-buy/get-products-async-response-input-required.json"
     },
     {
-      "$ref": "../media-buy/get-products-async-response-submitted.json",
+      "title": "GetProductsAsyncSubmitted",
       "description": "Acknowledgment for submitted get_products (custom curation)",
-      "title": "GetProductsAsyncSubmitted"
+      "$ref": "../media-buy/get-products-async-response-submitted.json"
     },
     {
-      "$ref": "../media-buy/create-media-buy-response.json",
+      "title": "CreateMediaBuyResponse",
       "description": "Response for completed or failed create_media_buy",
-      "title": "CreateMediaBuyResponse"
+      "$ref": "../media-buy/create-media-buy-response.json"
     },
     {
-      "$ref": "../media-buy/create-media-buy-async-response-working.json",
+      "title": "CreateMediaBuyAsyncWorking",
       "description": "Progress data for working create_media_buy",
-      "title": "CreateMediaBuyAsyncWorking"
+      "$ref": "../media-buy/create-media-buy-async-response-working.json"
     },
     {
-      "$ref": "../media-buy/create-media-buy-async-response-input-required.json",
+      "title": "CreateMediaBuyAsyncInputRequired",
       "description": "Input requirements for create_media_buy needing user input",
-      "title": "CreateMediaBuyAsyncInputRequired"
+      "$ref": "../media-buy/create-media-buy-async-response-input-required.json"
     },
     {
-      "$ref": "../media-buy/create-media-buy-async-response-submitted.json",
+      "title": "CreateMediaBuyAsyncSubmitted",
       "description": "Acknowledgment for submitted create_media_buy",
-      "title": "CreateMediaBuyAsyncSubmitted"
+      "$ref": "../media-buy/create-media-buy-async-response-submitted.json"
     },
     {
-      "$ref": "../media-buy/update-media-buy-response.json",
+      "title": "UpdateMediaBuyResponse",
       "description": "Response for completed or failed update_media_buy",
-      "title": "UpdateMediaBuyResponse"
+      "$ref": "../media-buy/update-media-buy-response.json"
     },
     {
-      "$ref": "../media-buy/update-media-buy-async-response-working.json",
+      "title": "UpdateMediaBuyAsyncWorking",
       "description": "Progress data for working update_media_buy",
-      "title": "UpdateMediaBuyAsyncWorking"
+      "$ref": "../media-buy/update-media-buy-async-response-working.json"
     },
     {
-      "$ref": "../media-buy/update-media-buy-async-response-input-required.json",
+      "title": "UpdateMediaBuyAsyncInputRequired",
       "description": "Input requirements for update_media_buy needing user input",
-      "title": "UpdateMediaBuyAsyncInputRequired"
+      "$ref": "../media-buy/update-media-buy-async-response-input-required.json"
     },
     {
-      "$ref": "../media-buy/update-media-buy-async-response-submitted.json",
+      "title": "UpdateMediaBuyAsyncSubmitted",
       "description": "Acknowledgment for submitted update_media_buy",
-      "title": "UpdateMediaBuyAsyncSubmitted"
+      "$ref": "../media-buy/update-media-buy-async-response-submitted.json"
     },
     {
-      "$ref": "../media-buy/build-creative-response.json",
+      "title": "BuildCreativeResponse",
       "description": "Response for completed or failed build_creative",
-      "title": "BuildCreativeResponse"
+      "$ref": "../media-buy/build-creative-response.json"
     },
     {
-      "$ref": "../media-buy/build-creative-async-response-working.json",
+      "title": "BuildCreativeAsyncWorking",
       "description": "Progress data for working build_creative",
-      "title": "BuildCreativeAsyncWorking"
+      "$ref": "../media-buy/build-creative-async-response-working.json"
     },
     {
-      "$ref": "../media-buy/build-creative-async-response-input-required.json",
+      "title": "BuildCreativeAsyncInputRequired",
       "description": "Input requirements for build_creative needing user input",
-      "title": "BuildCreativeAsyncInputRequired"
+      "$ref": "../media-buy/build-creative-async-response-input-required.json"
     },
     {
-      "$ref": "../media-buy/build-creative-async-response-submitted.json",
+      "title": "BuildCreativeAsyncSubmitted",
       "description": "Acknowledgment for submitted build_creative",
-      "title": "BuildCreativeAsyncSubmitted"
+      "$ref": "../media-buy/build-creative-async-response-submitted.json"
     },
     {
-      "$ref": "../creative/sync-creatives-response.json",
+      "title": "SyncCreativesResponse",
       "description": "Response for completed or failed sync_creatives",
-      "title": "SyncCreativesResponse"
+      "$ref": "../creative/sync-creatives-response.json"
     },
     {
-      "$ref": "../creative/sync-creatives-async-response-working.json",
+      "title": "SyncCreativesAsyncWorking",
       "description": "Progress data for working sync_creatives",
-      "title": "SyncCreativesAsyncWorking"
+      "$ref": "../creative/sync-creatives-async-response-working.json"
     },
     {
-      "$ref": "../creative/sync-creatives-async-response-input-required.json",
+      "title": "SyncCreativesAsyncInputRequired",
       "description": "Input requirements for sync_creatives needing user input",
-      "title": "SyncCreativesAsyncInputRequired"
+      "$ref": "../creative/sync-creatives-async-response-input-required.json"
     },
     {
-      "$ref": "../creative/sync-creatives-async-response-submitted.json",
+      "title": "SyncCreativesAsyncSubmitted",
       "description": "Acknowledgment for submitted sync_creatives",
-      "title": "SyncCreativesAsyncSubmitted"
+      "$ref": "../creative/sync-creatives-async-response-submitted.json"
     },
     {
-      "$ref": "../media-buy/sync-catalogs-response.json",
+      "title": "SyncCatalogsResponse",
       "description": "Response for completed or failed sync_catalogs",
-      "title": "SyncCatalogsResponse"
+      "$ref": "../media-buy/sync-catalogs-response.json"
     },
     {
-      "$ref": "../media-buy/sync-catalogs-async-response-working.json",
+      "title": "SyncCatalogsAsyncWorking",
       "description": "Progress data for working sync_catalogs",
-      "title": "SyncCatalogsAsyncWorking"
+      "$ref": "../media-buy/sync-catalogs-async-response-working.json"
     },
     {
-      "$ref": "../media-buy/sync-catalogs-async-response-input-required.json",
+      "title": "SyncCatalogsAsyncInputRequired",
       "description": "Input requirements for sync_catalogs needing buyer input",
-      "title": "SyncCatalogsAsyncInputRequired"
+      "$ref": "../media-buy/sync-catalogs-async-response-input-required.json"
     },
     {
-      "$ref": "../media-buy/sync-catalogs-async-response-submitted.json",
+      "title": "SyncCatalogsAsyncSubmitted",
       "description": "Acknowledgment for submitted sync_catalogs",
-      "title": "SyncCatalogsAsyncSubmitted"
+      "$ref": "../media-buy/sync-catalogs-async-response-submitted.json"
     }
-  ],
-  "description": "Union of all possible data payloads for async task webhook responses. For completed/failed statuses, use the main task response schema. For working/input-required/submitted, use the status-specific schemas.",
-  "title": "AdCP Async Response Data"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/attribution-window.json b/schemas/cache/core/attribution-window.json
index 6dd1e3be2..190cffcbe 100644
--- a/schemas/cache/core/attribution-window.json
+++ b/schemas/cache/core/attribution-window.json
@@ -1,12 +1,9 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Attribution Window",
   "description": "Describes the attribution methodology and lookback windows used for conversion measurement. Enables cross-platform comparison by making attribution methodology transparent.",
+  "type": "object",
   "properties": {
-    "model": {
-      "$ref": "../enums/attribution-model.json",
-      "description": "Attribution model used to assign credit when multiple touchpoints exist"
-    },
     "post_click": {
       "allOf": [
         {
@@ -22,11 +19,14 @@
         }
       ],
       "description": "Post-view attribution window. Conversions occurring within this duration after an ad impression (without click) are attributed to the ad."
+    },
+    "model": {
+      "$ref": "../enums/attribution-model.json",
+      "description": "Attribution model used to assign credit when multiple touchpoints exist"
     }
   },
   "required": [
     "model"
   ],
-  "title": "Attribution Window",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/audience-member.json b/schemas/cache/core/audience-member.json
index bb7d33e69..37ee05f94 100644
--- a/schemas/cache/core/audience-member.json
+++ b/schemas/cache/core/audience-member.json
@@ -1,69 +1,69 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "anyOf": [
-    {
-      "required": [
-        "hashed_email"
-      ]
-    },
-    {
-      "required": [
-        "hashed_phone"
-      ]
-    },
-    {
-      "required": [
-        "uids"
-      ]
-    }
-  ],
+  "title": "Audience Member",
   "description": "A CRM audience member identified by a buyer-assigned external_id and at least one matchable identifier. All identifiers must be normalized before hashing: emails to lowercase+trim, phone numbers to E.164 format (e.g. +12065551234). Providing multiple identifiers for the same person improves match rates. Composite identifiers (e.g. hashed first name + last name + zip for Google Customer Match) are not yet standardized \u2014 use the ext field for platform-specific extensions.",
+  "type": "object",
   "properties": {
-    "ext": {
-      "$ref": "ext.json"
-    },
     "external_id": {
-      "description": "Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers).",
-      "type": "string"
+      "type": "string",
+      "description": "Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
     },
     "hashed_email": {
+      "type": "string",
       "description": "SHA-256 hash of lowercase, trimmed email address.",
-      "pattern": "^[a-f0-9]{64}$",
-      "type": "string"
+      "pattern": "^[a-f0-9]{64}$"
     },
     "hashed_phone": {
+      "type": "string",
       "description": "SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).",
-      "pattern": "^[a-f0-9]{64}$",
-      "type": "string"
+      "pattern": "^[a-f0-9]{64}$"
     },
     "uids": {
+      "type": "array",
       "description": "Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
           "type": {
             "$ref": "../enums/uid-type.json",
             "description": "Universal ID type"
           },
           "value": {
-            "description": "Universal ID value",
-            "type": "string"
+            "type": "string",
+            "description": "Universal ID value"
           }
         },
         "required": [
           "type",
           "value"
         ],
-        "type": "object"
+        "additionalProperties": true
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "external_id"
   ],
-  "title": "Audience Member",
-  "type": "object"
+  "anyOf": [
+    {
+      "required": [
+        "hashed_email"
+      ]
+    },
+    {
+      "required": [
+        "hashed_phone"
+      ]
+    },
+    {
+      "required": [
+        "uids"
+      ]
+    }
+  ],
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/audience-selector.json b/schemas/cache/core/audience-selector.json
index 05fa5cb8c..e2150a0c2 100644
--- a/schemas/cache/core/audience-selector.json
+++ b/schemas/cache/core/audience-selector.json
@@ -1,28 +1,29 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Audience Selector",
   "description": "Selects an audience by signal reference or natural language description. Uses 'type' as the primary discriminator (signal vs description). Signal selectors additionally use 'value_type' to determine the targeting expression format (matching signal-targeting.json variants).",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Signal-based selector for binary signals \u2014 user either matches or doesn't. The governance agent can resolve catalog signals to their full definition for structural validation.",
       "properties": {
-        "signal_id": {
-          "$ref": "signal-id.json",
-          "description": "The signal to target"
-        },
         "type": {
+          "type": "string",
           "const": "signal",
-          "description": "Discriminator for signal-based selectors",
-          "type": "string"
+          "description": "Discriminator for signal-based selectors"
         },
-        "value": {
-          "description": "Whether to include (true) or exclude (false) users matching this signal",
-          "type": "boolean"
+        "signal_id": {
+          "$ref": "signal-id.json",
+          "description": "The signal to target"
         },
         "value_type": {
+          "type": "string",
           "const": "binary",
-          "description": "Discriminator for binary signals",
-          "type": "string"
+          "description": "Discriminator for binary signals"
+        },
+        "value": {
+          "type": "boolean",
+          "description": "Whether to include (true) or exclude (false) users matching this signal"
         }
       },
       "required": [
@@ -31,33 +32,33 @@
         "value_type",
         "value"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Signal-based selector for categorical signals \u2014 target users with specific values.",
       "properties": {
+        "type": {
+          "type": "string",
+          "const": "signal",
+          "description": "Discriminator for signal-based selectors"
+        },
         "signal_id": {
           "$ref": "signal-id.json",
           "description": "The signal to target"
         },
-        "type": {
-          "const": "signal",
-          "description": "Discriminator for signal-based selectors",
-          "type": "string"
-        },
         "value_type": {
+          "type": "string",
           "const": "categorical",
-          "description": "Discriminator for categorical signals",
-          "type": "string"
+          "description": "Discriminator for categorical signals"
         },
         "values": {
+          "type": "array",
           "description": "Values to target. Users with any of these values will be included.",
           "items": {
             "type": "string"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
       },
       "required": [
@@ -66,33 +67,33 @@
         "value_type",
         "values"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Signal-based selector for numeric signals \u2014 target users within a value range.",
       "properties": {
-        "max_value": {
-          "description": "Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided.",
-          "type": "number"
-        },
-        "min_value": {
-          "description": "Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided.",
-          "type": "number"
+        "type": {
+          "type": "string",
+          "const": "signal",
+          "description": "Discriminator for signal-based selectors"
         },
         "signal_id": {
           "$ref": "signal-id.json",
           "description": "The signal to target"
         },
-        "type": {
-          "const": "signal",
-          "description": "Discriminator for signal-based selectors",
-          "type": "string"
-        },
         "value_type": {
+          "type": "string",
           "const": "numeric",
-          "description": "Discriminator for numeric signals",
-          "type": "string"
+          "description": "Discriminator for numeric signals"
+        },
+        "min_value": {
+          "type": "number",
+          "description": "Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided."
+        },
+        "max_value": {
+          "type": "number",
+          "description": "Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided."
         }
       },
       "required": [
@@ -100,34 +101,33 @@
         "signal_id",
         "value_type"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Description-based selector \u2014 natural language audience description. Used when the caller doesn't have a specific signal ID (e.g., buyer setting plan-level goals, or seller using proprietary segments without public catalog entries).",
       "properties": {
-        "category": {
-          "description": "Optional grouping hint for the governance agent (e.g., 'demographic', 'behavioral', 'contextual', 'financial')",
-          "type": "string"
+        "type": {
+          "type": "string",
+          "const": "description",
+          "description": "Discriminator for description-based selectors"
         },
         "description": {
+          "type": "string",
           "description": "Natural language description of the audience (e.g., 'likely EV buyers', 'high net worth individuals', 'vulnerable communities')",
-          "maxLength": 2000,
           "minLength": 1,
-          "type": "string"
+          "maxLength": 2000
         },
-        "type": {
-          "const": "description",
-          "description": "Discriminator for description-based selectors",
-          "type": "string"
+        "category": {
+          "type": "string",
+          "description": "Optional grouping hint for the governance agent (e.g., 'demographic', 'behavioral', 'contextual', 'financial')"
         }
       },
       "required": [
         "type",
         "description"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Audience Selector"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/brand-id.json b/schemas/cache/core/brand-id.json
index 01ddc0b36..e33fc5d7e 100644
--- a/schemas/cache/core/brand-id.json
+++ b/schemas/cache/core/brand-id.json
@@ -1,14 +1,14 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Brand ID",
   "description": "Identifier for a brand within a house portfolio. Must be lowercase alphanumeric with underscores only. The house chooses this identifier.",
+  "type": "string",
+  "pattern": "^[a-z0-9_]+$",
   "examples": [
     "tide",
     "cheerios",
     "air_jordan",
     "nike",
     "pampers"
-  ],
-  "pattern": "^[a-z0-9_]+$",
-  "title": "Brand ID",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/brand-ref.json b/schemas/cache/core/brand-ref.json
index a32c0c7bf..066d11318 100644
--- a/schemas/cache/core/brand-ref.json
+++ b/schemas/cache/core/brand-ref.json
@@ -1,34 +1,34 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Brand Reference",
   "description": "Reference to a brand by domain and optional brand_id. The domain hosts /.well-known/brand.json or is registered in the brand registry. For single-brand domains, brand_id can be omitted. For house-of-brands domains, brand_id identifies the specific brand.",
-  "examples": [
-    {
-      "brand_id": "spark",
-      "domain": "nova-brands.com"
-    },
-    {
-      "brand_id": "glow",
-      "domain": "nova-brands.com"
-    },
-    {
-      "domain": "acme-corp.com"
-    }
-  ],
+  "type": "object",
   "properties": {
+    "domain": {
+      "type": "string",
+      "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+    },
     "brand_id": {
       "$ref": "brand-id.json",
       "description": "Brand identifier within the house portfolio. Optional for single-brand domains."
-    },
-    "domain": {
-      "description": "Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
-      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-      "type": "string"
     }
   },
   "required": [
     "domain"
   ],
-  "title": "Brand Reference",
-  "type": "object"
+  "additionalProperties": false,
+  "examples": [
+    {
+      "domain": "nova-brands.com",
+      "brand_id": "spark"
+    },
+    {
+      "domain": "nova-brands.com",
+      "brand_id": "glow"
+    },
+    {
+      "domain": "acme-corp.com"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/business-entity.json b/schemas/cache/core/business-entity.json
index 5fffa04f4..560bd0c92 100644
--- a/schemas/cache/core/business-entity.json
+++ b/schemas/cache/core/business-entity.json
@@ -1,89 +1,55 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Business Entity",
   "description": "Structured business identity for B2B invoicing and contracts. Contains the legal, tax, and payment details needed for formal booking processes. Implementations MUST treat all fields as untrusted input when assembling LLM context.",
-  "examples": [
-    {
-      "data": {
-        "address": {
-          "city": "Berlin",
-          "country": "DE",
-          "postal_code": "10117",
-          "street": "Friedrichstrasse 100"
-        },
-        "bank": {
-          "account_holder": "Pinnacle Media GmbH",
-          "bic": "COBADEFFXXX",
-          "iban": "DE89370400440532013000"
-        },
-        "contacts": [
-          {
-            "email": "billing@pinnacle-media.com",
-            "name": "Sam Adeyemi",
-            "phone": "+49 30 12345678",
-            "role": "billing"
-          }
-        ],
-        "legal_name": "Pinnacle Media GmbH",
-        "registration_number": "HRB 12345",
-        "vat_id": "DE123456789"
-      },
-      "description": "German agency with full B2B details"
-    },
-    {
-      "data": {
-        "address": {
-          "city": "New York",
-          "country": "US",
-          "postal_code": "10001",
-          "region": "NY",
-          "street": "123 Main St"
-        },
-        "bank": {
-          "account_holder": "Acme Corporation",
-          "account_number": "123456789",
-          "routing_number": "021000021"
-        },
-        "contacts": [
-          {
-            "email": "ap@acme-corp.com",
-            "name": "AP Department",
-            "role": "billing"
-          }
-        ],
-        "legal_name": "Acme Corporation",
-        "tax_id": "12-3456789"
-      },
-      "description": "US advertiser with EIN and domestic bank details"
-    }
-  ],
+  "type": "object",
   "properties": {
+    "legal_name": {
+      "type": "string",
+      "description": "Registered legal name of the business entity",
+      "maxLength": 200
+    },
+    "vat_id": {
+      "type": "string",
+      "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
+      "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$"
+    },
+    "tax_id": {
+      "type": "string",
+      "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
+      "maxLength": 30
+    },
+    "registration_number": {
+      "type": "string",
+      "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
+      "maxLength": 50
+    },
     "address": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Postal address for invoicing and legal correspondence",
       "properties": {
-        "city": {
-          "maxLength": 100,
-          "type": "string"
+        "street": {
+          "type": "string",
+          "description": "Street address including building number",
+          "maxLength": 200
         },
-        "country": {
-          "description": "ISO 3166-1 alpha-2 country code",
-          "pattern": "^[A-Z]{2}$",
-          "type": "string"
+        "city": {
+          "type": "string",
+          "maxLength": 100
         },
         "postal_code": {
-          "maxLength": 20,
-          "type": "string"
+          "type": "string",
+          "maxLength": 20
         },
         "region": {
+          "type": "string",
           "description": "State, province, or region",
-          "maxLength": 100,
-          "type": "string"
+          "maxLength": 100
         },
-        "street": {
-          "description": "Street address including building number",
-          "maxLength": 200,
-          "type": "string"
+        "country": {
+          "type": "string",
+          "description": "ISO 3166-1 alpha-2 country code",
+          "pattern": "^[A-Z]{2}$"
         }
       },
       "required": [
@@ -92,65 +58,16 @@
         "postal_code",
         "country"
       ],
-      "type": "object"
-    },
-    "bank": {
-      "additionalProperties": false,
-      "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
-      "properties": {
-        "account_holder": {
-          "description": "Name on the bank account",
-          "maxLength": 200,
-          "type": "string"
-        },
-        "account_number": {
-          "description": "Bank account number for non-SEPA markets",
-          "maxLength": 30,
-          "type": "string"
-        },
-        "bic": {
-          "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
-          "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$",
-          "type": "string"
-        },
-        "iban": {
-          "description": "International Bank Account Number (SEPA markets)",
-          "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$",
-          "type": "string"
-        },
-        "routing_number": {
-          "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
-          "maxLength": 30,
-          "type": "string"
-        }
-      },
-      "required": [
-        "account_holder"
-      ],
-      "type": "object",
-      "writeOnly": true
+      "additionalProperties": false
     },
     "contacts": {
+      "type": "array",
       "description": "Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
-          "email": {
-            "format": "email",
-            "maxLength": 254,
-            "type": "string"
-          },
-          "name": {
-            "description": "Full name of the contact",
-            "maxLength": 200,
-            "type": "string"
-          },
-          "phone": {
-            "maxLength": 30,
-            "type": "string"
-          },
           "role": {
-            "description": "Contact's functional role in the business relationship",
+            "type": "string",
             "enum": [
               "billing",
               "legal",
@@ -159,48 +76,131 @@
             ],
             "enumDescriptions": {
               "billing": "Accounts payable and invoice queries",
+              "legal": "Contract and compliance matters",
               "creative": "Material submission and creative approval",
-              "general": "Default contact when no specific role applies",
-              "legal": "Contract and compliance matters"
+              "general": "Default contact when no specific role applies"
             },
-            "type": "string"
+            "description": "Contact's functional role in the business relationship"
+          },
+          "name": {
+            "type": "string",
+            "description": "Full name of the contact",
+            "maxLength": 200
+          },
+          "email": {
+            "type": "string",
+            "format": "email",
+            "maxLength": 254
+          },
+          "phone": {
+            "type": "string",
+            "maxLength": 30
           }
         },
         "required": [
           "role"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "maxItems": 10,
-      "type": "array"
+      "maxItems": 10
+    },
+    "bank": {
+      "type": "object",
+      "writeOnly": true,
+      "description": "Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.",
+      "properties": {
+        "account_holder": {
+          "type": "string",
+          "description": "Name on the bank account",
+          "maxLength": 200
+        },
+        "iban": {
+          "type": "string",
+          "description": "International Bank Account Number (SEPA markets)",
+          "pattern": "^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$"
+        },
+        "bic": {
+          "type": "string",
+          "description": "Bank Identifier Code / SWIFT code (SEPA markets)",
+          "pattern": "^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$"
+        },
+        "routing_number": {
+          "type": "string",
+          "description": "Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)",
+          "maxLength": 30
+        },
+        "account_number": {
+          "type": "string",
+          "description": "Bank account number for non-SEPA markets",
+          "maxLength": 30
+        }
+      },
+      "required": [
+        "account_holder"
+      ],
+      "additionalProperties": false
     },
     "ext": {
       "$ref": "ext.json"
-    },
-    "legal_name": {
-      "description": "Registered legal name of the business entity",
-      "maxLength": 200,
-      "type": "string"
-    },
-    "registration_number": {
-      "description": "Company registration number (e.g., HRB 12345 for German Handelsregister)",
-      "maxLength": 50,
-      "type": "string"
-    },
-    "tax_id": {
-      "description": "Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)",
-      "maxLength": 30,
-      "type": "string"
-    },
-    "vat_id": {
-      "description": "VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.",
-      "pattern": "^[A-Z]{2}[A-Z0-9]{2,13}$",
-      "type": "string"
     }
   },
   "required": [
     "legal_name"
   ],
-  "title": "Business Entity",
-  "type": "object"
+  "additionalProperties": false,
+  "examples": [
+    {
+      "description": "German agency with full B2B details",
+      "data": {
+        "legal_name": "Pinnacle Media GmbH",
+        "vat_id": "DE123456789",
+        "registration_number": "HRB 12345",
+        "address": {
+          "street": "Friedrichstrasse 100",
+          "city": "Berlin",
+          "postal_code": "10117",
+          "country": "DE"
+        },
+        "contacts": [
+          {
+            "role": "billing",
+            "name": "Sam Adeyemi",
+            "email": "billing@pinnacle-media.com",
+            "phone": "+49 30 12345678"
+          }
+        ],
+        "bank": {
+          "account_holder": "Pinnacle Media GmbH",
+          "iban": "DE89370400440532013000",
+          "bic": "COBADEFFXXX"
+        }
+      }
+    },
+    {
+      "description": "US advertiser with EIN and domestic bank details",
+      "data": {
+        "legal_name": "Acme Corporation",
+        "tax_id": "12-3456789",
+        "address": {
+          "street": "123 Main St",
+          "city": "New York",
+          "postal_code": "10001",
+          "region": "NY",
+          "country": "US"
+        },
+        "contacts": [
+          {
+            "role": "billing",
+            "name": "AP Department",
+            "email": "ap@acme-corp.com"
+          }
+        ],
+        "bank": {
+          "account_holder": "Acme Corporation",
+          "routing_number": "021000021",
+          "account_number": "123456789"
+        }
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/catalog-field-mapping.json b/schemas/cache/core/catalog-field-mapping.json
index 8c732fbe2..3e7ceb4fd 100644
--- a/schemas/cache/core/catalog-field-mapping.json
+++ b/schemas/cache/core/catalog-field-mapping.json
@@ -1,6 +1,59 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Catalog Field Mapping",
+  "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+  "type": "object",
+  "properties": {
+    "feed_field": {
+      "type": "string",
+      "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead)."
+    },
+    "catalog_field": {
+      "type": "string",
+      "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+    },
+    "asset_group_id": {
+      "type": "string",
+      "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+    },
+    "value": {
+      "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+    },
+    "transform": {
+      "type": "string",
+      "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
+      "enum": [
+        "date",
+        "divide",
+        "boolean",
+        "split"
+      ]
+    },
+    "format": {
+      "type": "string",
+      "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+    },
+    "timezone": {
+      "type": "string",
+      "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+    },
+    "by": {
+      "type": "number",
+      "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+      "exclusiveMinimum": 0
+    },
+    "separator": {
+      "type": "string",
+      "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
+      "default": ","
+    },
+    "default": {
+      "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
   "allOf": [
     {
       "not": {
@@ -19,125 +72,72 @@
       }
     }
   ],
-  "description": "Declares how a field in an external feed maps to the AdCP catalog item schema. Used in sync_catalogs feed_field_mappings to normalize non-AdCP feeds (Google Merchant Center, LinkedIn Jobs XML, hotel XML, etc.) to the standard catalog item schema without requiring the buyer to preprocess every feed. Multiple mappings can assemble a nested object via dot notation (e.g., separate mappings for price.amount and price.currency).",
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Simple field rename",
       "data": {
-        "catalog_field": "name",
-        "feed_field": "hotel_name"
-      },
-      "description": "Simple field rename"
+        "feed_field": "hotel_name",
+        "catalog_field": "name"
+      }
     },
     {
+      "description": "Date format transform \u2014 YYYYMMDD to ISO 8601",
       "data": {
-        "catalog_field": "valid_from",
         "feed_field": "available_from",
+        "catalog_field": "valid_from",
+        "transform": "date",
         "format": "YYYYMMDD",
-        "timezone": "UTC",
-        "transform": "date"
-      },
-      "description": "Date format transform \u2014 YYYYMMDD to ISO 8601"
+        "timezone": "UTC"
+      }
     },
     {
+      "description": "Divide cents to dollars",
       "data": {
-        "by": 100,
-        "catalog_field": "price.amount",
         "feed_field": "price_cents",
-        "transform": "divide"
-      },
-      "description": "Divide cents to dollars"
+        "catalog_field": "price.amount",
+        "transform": "divide",
+        "by": 100
+      }
     },
     {
+      "description": "Static literal injection \u2014 currency not in feed",
       "data": {
         "catalog_field": "price.currency",
         "value": "USD"
-      },
-      "description": "Static literal injection \u2014 currency not in feed"
+      }
     },
     {
+      "description": "Image URL assigned to typed asset pool",
       "data": {
-        "asset_group_id": "images_landscape",
-        "feed_field": "primary_photo_url"
-      },
-      "description": "Image URL assigned to typed asset pool"
+        "feed_field": "primary_photo_url",
+        "asset_group_id": "images_landscape"
+      }
     },
     {
+      "description": "Vertical photo URL assigned to vertical pool",
       "data": {
-        "asset_group_id": "images_vertical",
-        "feed_field": "portrait_photo_url"
-      },
-      "description": "Vertical photo URL assigned to vertical pool"
+        "feed_field": "portrait_photo_url",
+        "asset_group_id": "images_vertical"
+      }
     },
     {
+      "description": "Split comma-separated tags to array",
       "data": {
-        "catalog_field": "amenities",
         "feed_field": "amenity_list",
-        "separator": ",",
-        "transform": "split"
-      },
-      "description": "Split comma-separated tags to array"
+        "catalog_field": "amenities",
+        "transform": "split",
+        "separator": ","
+      }
     },
     {
+      "description": "Boolean coercion with default",
       "data": {
-        "catalog_field": "available",
-        "default": false,
         "feed_field": "is_available",
-        "transform": "boolean"
-      },
-      "description": "Boolean coercion with default"
-    }
-  ],
-  "properties": {
-    "asset_group_id": {
-      "description": "Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field.",
-      "type": "string"
-    },
-    "by": {
-      "description": "For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
-      "exclusiveMinimum": 0,
-      "type": "number"
-    },
-    "catalog_field": {
-      "description": "Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id.",
-      "type": "string"
-    },
-    "default": {
-      "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "feed_field": {
-      "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).",
-      "type": "string"
-    },
-    "format": {
-      "description": "For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens.",
-      "type": "string"
-    },
-    "separator": {
-      "default": ",",
-      "description": "For transform 'split': the separator character or string to split on. Defaults to ','.",
-      "type": "string"
-    },
-    "timezone": {
-      "description": "For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted.",
-      "type": "string"
-    },
-    "transform": {
-      "description": "Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).",
-      "enum": [
-        "date",
-        "divide",
-        "boolean",
-        "split"
-      ],
-      "type": "string"
-    },
-    "value": {
-      "description": "Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value)."
+        "catalog_field": "available",
+        "transform": "boolean",
+        "default": false
+      }
     }
-  },
-  "title": "Catalog Field Mapping",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/catalog.json b/schemas/cache/core/catalog.json
index 5b4ca34b1..c21834109 100644
--- a/schemas/cache/core/catalog.json
+++ b/schemas/cache/core/catalog.json
@@ -1,220 +1,220 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Catalog",
   "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
+  "type": "object",
+  "properties": {
+    "catalog_id": {
+      "type": "string",
+      "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+    },
+    "type": {
+      "$ref": "../enums/catalog-type.json",
+      "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema."
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+    },
+    "feed_format": {
+      "$ref": "../enums/feed-format.json",
+      "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON."
+    },
+    "update_frequency": {
+      "$ref": "../enums/update-frequency.json",
+      "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules."
+    },
+    "items": {
+      "type": "array",
+      "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+      "items": {
+        "type": "object"
+      },
+      "minItems": 1
+    },
+    "ids": {
+      "type": "array",
+      "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "gtins": {
+      "type": "array",
+      "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+      "items": {
+        "type": "string",
+        "pattern": "^[0-9]{8,14}$"
+      },
+      "minItems": 1
+    },
+    "tags": {
+      "type": "array",
+      "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "category": {
+      "type": "string",
+      "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+    },
+    "query": {
+      "type": "string",
+      "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+    },
+    "conversion_events": {
+      "type": "array",
+      "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+      "items": {
+        "$ref": "../enums/event-type.json"
+      },
+      "minItems": 1,
+      "uniqueItems": true
+    },
+    "content_id_type": {
+      "$ref": "../enums/content-id-type.json",
+      "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum."
+    },
+    "feed_field_mappings": {
+      "type": "array",
+      "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
+      "items": {
+        "$ref": "catalog-field-mapping.json"
+      },
+      "minItems": 1
+    }
+  },
+  "required": [
+    "type"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Synced product catalog from Google Merchant Center",
       "data": {
         "catalog_id": "gmc-primary",
-        "feed_format": "google_merchant_center",
         "name": "Primary Product Feed",
         "type": "product",
-        "update_frequency": "daily",
-        "url": "https://feeds.acmecorp.com/products.xml"
-      },
-      "description": "Synced product catalog from Google Merchant Center"
+        "url": "https://feeds.acmecorp.com/products.xml",
+        "feed_format": "google_merchant_center",
+        "update_frequency": "daily"
+      }
     },
     {
+      "description": "Inventory feed for store-level stock data",
       "data": {
         "catalog_id": "store-inventory",
-        "feed_format": "custom",
         "name": "Store Inventory",
         "type": "inventory",
-        "update_frequency": "hourly",
-        "url": "https://feeds.acmecorp.com/inventory.json"
-      },
-      "description": "Inventory feed for store-level stock data"
+        "url": "https://feeds.acmecorp.com/inventory.json",
+        "feed_format": "custom",
+        "update_frequency": "hourly"
+      }
     },
     {
+      "description": "Store locator feed",
       "data": {
         "catalog_id": "retail-locations",
-        "feed_format": "custom",
         "name": "Retail Locations",
         "type": "store",
-        "update_frequency": "weekly",
-        "url": "https://feeds.acmecorp.com/stores.json"
-      },
-      "description": "Store locator feed"
+        "url": "https://feeds.acmecorp.com/stores.json",
+        "feed_format": "custom",
+        "update_frequency": "weekly"
+      }
     },
     {
+      "description": "Promotional pricing feed",
       "data": {
         "catalog_id": "summer-sale",
-        "feed_format": "google_merchant_center",
         "name": "Summer Sale Promotions",
         "type": "promotion",
-        "update_frequency": "daily",
-        "url": "https://feeds.acmecorp.com/promotions.json"
-      },
-      "description": "Promotional pricing feed"
+        "url": "https://feeds.acmecorp.com/promotions.json",
+        "feed_format": "google_merchant_center",
+        "update_frequency": "daily"
+      }
     },
     {
+      "description": "Inline offering catalog (no sync needed)",
       "data": {
+        "type": "offering",
         "items": [
           {
-            "landing_url": "https://acme.com/summer",
+            "offering_id": "summer-sale",
             "name": "Summer Sale",
-            "offering_id": "summer-sale"
+            "landing_url": "https://acme.com/summer"
           }
-        ],
-        "type": "offering"
-      },
-      "description": "Inline offering catalog (no sync needed)"
+        ]
+      }
     },
     {
+      "description": "Reference to a previously synced catalog by ID",
       "data": {
         "catalog_id": "gmc-primary",
+        "type": "product",
         "ids": [
           "SKU-12345",
           "SKU-67890"
-        ],
-        "type": "product"
-      },
-      "description": "Reference to a previously synced catalog by ID"
+        ]
+      }
     },
     {
+      "description": "Product catalog with GTIN cross-retailer matching and attribution",
       "data": {
-        "content_id_type": "gtin",
-        "conversion_events": [
-          "purchase",
-          "add_to_cart"
-        ],
+        "type": "product",
         "gtins": [
           "00013000006040",
           "00013000006057"
         ],
-        "type": "product"
-      },
-      "description": "Product catalog with GTIN cross-retailer matching and attribution"
+        "content_id_type": "gtin",
+        "conversion_events": [
+          "purchase",
+          "add_to_cart"
+        ]
+      }
     },
     {
+      "description": "Inline store catalog with catchment areas",
       "data": {
         "catalog_id": "retail-locations",
+        "name": "Retail Locations",
+        "type": "store",
         "items": [
           {
+            "store_id": "amsterdam-flagship",
+            "name": "Amsterdam Flagship",
+            "location": {
+              "lat": 52.3676,
+              "lng": 4.9041
+            },
             "catchments": [
               {
                 "catchment_id": "walk",
-                "transport_mode": "walking",
                 "travel_time": {
-                  "unit": "min",
-                  "value": 10
-                }
+                  "value": 10,
+                  "unit": "min"
+                },
+                "transport_mode": "walking"
               },
               {
                 "catchment_id": "drive",
-                "transport_mode": "driving",
                 "travel_time": {
-                  "unit": "min",
-                  "value": 15
-                }
+                  "value": 15,
+                  "unit": "min"
+                },
+                "transport_mode": "driving"
               }
-            ],
-            "location": {
-              "lat": 52.3676,
-              "lng": 4.9041
-            },
-            "name": "Amsterdam Flagship",
-            "store_id": "amsterdam-flagship"
+            ]
           }
-        ],
-        "name": "Retail Locations",
-        "type": "store"
-      },
-      "description": "Inline store catalog with catchment areas"
+        ]
+      }
     }
-  ],
-  "properties": {
-    "catalog_id": {
-      "description": "Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account.",
-      "type": "string"
-    },
-    "category": {
-      "description": "Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions').",
-      "type": "string"
-    },
-    "content_id_type": {
-      "$ref": "../enums/content-id-type.json",
-      "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum."
-    },
-    "conversion_events": {
-      "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
-      "items": {
-        "$ref": "../enums/event-type.json"
-      },
-      "minItems": 1,
-      "type": "array",
-      "uniqueItems": true
-    },
-    "feed_field_mappings": {
-      "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
-      "items": {
-        "$ref": "catalog-field-mapping.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "feed_format": {
-      "$ref": "../enums/feed-format.json",
-      "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON."
-    },
-    "gtins": {
-      "description": "Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
-      "items": {
-        "pattern": "^[0-9]{8,14}$",
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "ids": {
-      "description": "Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "items": {
-      "description": "Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url \u2014 provide one or the other, not both. Implementations should validate items against the type-specific schema.",
-      "items": {
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "name": {
-      "description": "Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations').",
-      "type": "string"
-    },
-    "query": {
-      "description": "Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies').",
-      "type": "string"
-    },
-    "tags": {
-      "description": "Filter catalog to items with these tags. Tags are matched using OR logic \u2014 items matching any tag are included.",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "type": {
-      "$ref": "../enums/catalog-type.json",
-      "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema."
-    },
-    "update_frequency": {
-      "$ref": "../enums/update-frequency.json",
-      "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules."
-    },
-    "url": {
-      "description": "URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog.",
-      "format": "uri",
-      "type": "string"
-    }
-  },
-  "required": [
-    "type"
-  ],
-  "title": "Catalog",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/catchment.json b/schemas/cache/core/catchment.json
index 80cef8125..329a30069 100644
--- a/schemas/cache/core/catchment.json
+++ b/schemas/cache/core/catchment.json
@@ -1,80 +1,101 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Catchment",
   "description": "A catchment area definition for a store or location. Defines the geographic area from which a store draws customers. Three methods are supported: isochrone inputs (travel time + transport mode, platform resolves the shape), simple radius (distance from location), or pre-computed GeoJSON geometry (buyer provides the exact boundary). Provide exactly one method per catchment.",
-  "examples": [
-    {
-      "data": {
-        "catchment_id": "drive",
-        "label": "15-min drive",
-        "transport_mode": "driving",
-        "travel_time": {
-          "unit": "min",
-          "value": 15
-        }
-      },
-      "description": "Isochrone: 15-minute drive"
+  "type": "object",
+  "properties": {
+    "catchment_id": {
+      "type": "string",
+      "description": "Identifier for this catchment, used to reference specific catchment areas in targeting (e.g., 'walk', 'drive', 'primary')."
     },
-    {
-      "data": {
-        "catchment_id": "walk",
-        "label": "10-min walk",
-        "transport_mode": "walking",
-        "travel_time": {
-          "unit": "min",
-          "value": 10
+    "label": {
+      "type": "string",
+      "description": "Human-readable label for this catchment (e.g., '15-min drive', '1km walking radius')."
+    },
+    "travel_time": {
+      "type": "object",
+      "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks, accounting for road connectivity, transit schedules, and terrain.",
+      "properties": {
+        "value": {
+          "type": "number",
+          "minimum": 1,
+          "description": "Travel time limit."
+        },
+        "unit": {
+          "type": "string",
+          "enum": [
+            "min",
+            "hr"
+          ],
+          "description": "Time unit."
         }
       },
-      "description": "Isochrone: 10-minute walk"
+      "required": [
+        "value",
+        "unit"
+      ],
+      "additionalProperties": false
     },
-    {
-      "data": {
-        "catchment_id": "local",
-        "label": "5km radius",
-        "radius": {
-          "unit": "km",
-          "value": 5
+    "transport_mode": {
+      "$ref": "../enums/transport-mode.json",
+      "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
+    },
+    "radius": {
+      "type": "object",
+      "description": "Simple radius from the store location. The platform draws a circle of this distance around the store's coordinates.",
+      "properties": {
+        "value": {
+          "type": "number",
+          "exclusiveMinimum": 0,
+          "description": "Radius distance."
+        },
+        "unit": {
+          "$ref": "../enums/distance-unit.json",
+          "description": "Distance unit."
         }
       },
-      "description": "Simple 5km radius"
+      "required": [
+        "value",
+        "unit"
+      ],
+      "additionalProperties": false
     },
-    {
-      "data": {
-        "catchment_id": "trade-area",
-        "geometry": {
-          "coordinates": [
-            [
-              [
-                4.85,
-                52.35
-              ],
-              [
-                4.95,
-                52.35
-              ],
-              [
-                4.95,
-                52.4
-              ],
-              [
-                4.85,
-                52.4
-              ],
-              [
-                4.85,
-                52.35
-              ]
-            ]
+    "geometry": {
+      "type": "object",
+      "description": "Pre-computed GeoJSON geometry defining the catchment boundary. Use this when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom trade area boundaries. Supports Polygon and MultiPolygon types.",
+      "properties": {
+        "type": {
+          "type": "string",
+          "enum": [
+            "Polygon",
+            "MultiPolygon"
           ],
-          "type": "Polygon"
+          "description": "GeoJSON geometry type."
         },
-        "label": "Primary trade area"
+        "coordinates": {
+          "type": "array",
+          "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+        }
       },
-      "description": "Pre-computed GeoJSON boundary"
+      "required": [
+        "type",
+        "coordinates"
+      ],
+      "additionalProperties": false
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
+  },
+  "required": [
+    "catchment_id"
   ],
   "oneOf": [
     {
+      "required": [
+        "travel_time",
+        "transport_mode"
+      ],
       "not": {
         "anyOf": [
           {
@@ -88,13 +109,12 @@
             ]
           }
         ]
-      },
-      "required": [
-        "travel_time",
-        "transport_mode"
-      ]
+      }
     },
     {
+      "required": [
+        "radius"
+      ],
       "not": {
         "anyOf": [
           {
@@ -108,12 +128,12 @@
             ]
           }
         ]
-      },
-      "required": [
-        "radius"
-      ]
+      }
     },
     {
+      "required": [
+        "geometry"
+      ],
       "not": {
         "anyOf": [
           {
@@ -127,99 +147,79 @@
             ]
           }
         ]
-      },
-      "required": [
-        "geometry"
-      ]
+      }
     }
   ],
-  "properties": {
-    "catchment_id": {
-      "description": "Identifier for this catchment, used to reference specific catchment areas in targeting (e.g., 'walk', 'drive', 'primary').",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "geometry": {
-      "additionalProperties": false,
-      "description": "Pre-computed GeoJSON geometry defining the catchment boundary. Use this when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom trade area boundaries. Supports Polygon and MultiPolygon types.",
-      "properties": {
-        "coordinates": {
-          "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.",
-          "type": "array"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Isochrone: 15-minute drive",
+      "data": {
+        "catchment_id": "drive",
+        "label": "15-min drive",
+        "travel_time": {
+          "value": 15,
+          "unit": "min"
         },
-        "type": {
-          "description": "GeoJSON geometry type.",
-          "enum": [
-            "Polygon",
-            "MultiPolygon"
-          ],
-          "type": "string"
-        }
-      },
-      "required": [
-        "type",
-        "coordinates"
-      ],
-      "type": "object"
+        "transport_mode": "driving"
+      }
     },
-    "label": {
-      "description": "Human-readable label for this catchment (e.g., '15-min drive', '1km walking radius').",
-      "type": "string"
-    },
-    "radius": {
-      "additionalProperties": false,
-      "description": "Simple radius from the store location. The platform draws a circle of this distance around the store's coordinates.",
-      "properties": {
-        "unit": {
-          "$ref": "../enums/distance-unit.json",
-          "description": "Distance unit."
+    {
+      "description": "Isochrone: 10-minute walk",
+      "data": {
+        "catchment_id": "walk",
+        "label": "10-min walk",
+        "travel_time": {
+          "value": 10,
+          "unit": "min"
         },
-        "value": {
-          "description": "Radius distance.",
-          "exclusiveMinimum": 0,
-          "type": "number"
-        }
-      },
-      "required": [
-        "value",
-        "unit"
-      ],
-      "type": "object"
+        "transport_mode": "walking"
+      }
     },
-    "transport_mode": {
-      "$ref": "../enums/transport-mode.json",
-      "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
+    {
+      "description": "Simple 5km radius",
+      "data": {
+        "catchment_id": "local",
+        "label": "5km radius",
+        "radius": {
+          "value": 5,
+          "unit": "km"
+        }
+      }
     },
-    "travel_time": {
-      "additionalProperties": false,
-      "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks, accounting for road connectivity, transit schedules, and terrain.",
-      "properties": {
-        "unit": {
-          "description": "Time unit.",
-          "enum": [
-            "min",
-            "hr"
-          ],
-          "type": "string"
-        },
-        "value": {
-          "description": "Travel time limit.",
-          "minimum": 1,
-          "type": "number"
+    {
+      "description": "Pre-computed GeoJSON boundary",
+      "data": {
+        "catchment_id": "trade-area",
+        "label": "Primary trade area",
+        "geometry": {
+          "type": "Polygon",
+          "coordinates": [
+            [
+              [
+                4.85,
+                52.35
+              ],
+              [
+                4.95,
+                52.35
+              ],
+              [
+                4.95,
+                52.4
+              ],
+              [
+                4.85,
+                52.4
+              ],
+              [
+                4.85,
+                52.35
+              ]
+            ]
+          ]
         }
-      },
-      "required": [
-        "value",
-        "unit"
-      ],
-      "type": "object"
+      }
     }
-  },
-  "required": [
-    "catchment_id"
-  ],
-  "title": "Catchment",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/collection-list-ref.json b/schemas/cache/core/collection-list-ref.json
new file mode 100644
index 000000000..f75721fb7
--- /dev/null
+++ b/schemas/cache/core/collection-list-ref.json
@@ -0,0 +1,27 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Collection List Reference",
+  "description": "Reference to an externally managed collection list. Enables passing large collection exclusion/inclusion sets without embedding them in requests. The receiving agent fetches and caches the list independently.",
+  "type": "object",
+  "properties": {
+    "agent_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL of the agent managing the collection list"
+    },
+    "list_id": {
+      "type": "string",
+      "description": "Identifier for the collection list within the agent",
+      "minLength": 1
+    },
+    "auth_token": {
+      "type": "string",
+      "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
+    }
+  },
+  "required": [
+    "agent_url",
+    "list_id"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/core/collection-selector.json b/schemas/cache/core/collection-selector.json
index 304212711..d2d4ab9ed 100644
--- a/schemas/cache/core/collection-selector.json
+++ b/schemas/cache/core/collection-selector.json
@@ -1,26 +1,26 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Collection Selector",
   "description": "References collections declared in an adagents.json. Buyers resolve full collection objects by fetching the adagents.json at the given domain and matching collection_ids against its collections array.",
+  "type": "object",
   "properties": {
+    "publisher_domain": {
+      "type": "string",
+      "description": "Domain where the adagents.json declaring these collections is hosted (e.g., 'mrbeast.com'). The collections array in that file contains the authoritative collection definitions.",
+      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+    },
     "collection_ids": {
+      "type": "array",
       "description": "Collection IDs from the adagents.json collections array. Each ID must match a collection_id declared in that file.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "publisher_domain": {
-      "description": "Domain where the adagents.json declaring these collections is hosted (e.g., 'mrbeast.com'). The collections array in that file contains the authoritative collection definitions.",
-      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-      "type": "string"
+      "minItems": 1
     }
   },
   "required": [
     "publisher_domain",
     "collection_ids"
   ],
-  "title": "Collection Selector",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/collection.json b/schemas/cache/core/collection.json
index 5383e71d8..02ae4913b 100644
--- a/schemas/cache/core/collection.json
+++ b/schemas/cache/core/collection.json
@@ -1,83 +1,101 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Collection",
   "description": "A recurring inventory container \u2014 a named program, publication, event series, or rotation that produces bookable installments on a defined cadence. The kind field indicates how to interpret this collection: 'series' for TV/podcast programs, 'publication' for print/newsletter titles, 'event_series' for live events, 'rotation' for DOOH scheduling. Declared in the publisher's adagents.json and referenced by products via collection selectors.",
+  "type": "object",
   "properties": {
-    "cadence": {
-      "$ref": "../enums/collection-cadence.json",
-      "description": "How frequently the collection releases new installments"
-    },
     "collection_id": {
-      "description": "Publisher-assigned identifier for this collection. Declared in the publisher's adagents.json collections array. Products reference collections via collection selectors with publisher_domain and collection_ids. Use distribution identifiers for cross-seller matching across publishers.",
-      "type": "string"
+      "type": "string",
+      "description": "Publisher-assigned identifier for this collection. Declared in the publisher's adagents.json collections array. Products reference collections via collection selectors with publisher_domain and collection_ids. Use distribution identifiers for cross-seller matching across publishers."
     },
-    "content_rating": {
-      "$ref": "content-rating.json",
-      "description": "Baseline content rating for the collection. Individual installments may override this."
+    "name": {
+      "type": "string",
+      "description": "Human-readable collection name"
     },
-    "deadline_policy": {
-      "$ref": "deadline-policy.json",
-      "description": "Default deadline rules for installments of this collection. Agents compute absolute deadlines from each installment's scheduled_at and these lead times. Installments with explicit deadlines override this policy."
+    "kind": {
+      "type": "string",
+      "enum": [
+        "series",
+        "publication",
+        "event_series",
+        "rotation"
+      ],
+      "description": "What kind of content program this is. Helps agents interpret installments correctly: 'series' installments are TV/podcast episodes, 'publication' installments are print issues, 'event_series' installments are live event airings, 'rotation' installments are DOOH scheduling periods. Defaults to 'series' when absent."
     },
     "description": {
-      "description": "What the collection is about",
-      "type": "string"
-    },
-    "distribution": {
-      "description": "Where this collection is distributed. Each entry maps the collection to a publisher platform with platform-specific identifiers. Collections SHOULD include at least one platform-independent identifier (imdb_id, gracenote_id, eidr_id) when available.",
-      "items": {
-        "$ref": "collection-distribution.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "ext.json"
+      "type": "string",
+      "description": "What the collection is about"
     },
     "genre": {
+      "type": "array",
       "description": "Genre tags. When genre_taxonomy is present, values are taxonomy IDs (e.g., IAB Content Taxonomy 3.0 codes). Otherwise free-form.",
       "items": {
         "type": "string"
-      },
-      "type": "array"
+      }
     },
     "genre_taxonomy": {
-      "description": "Taxonomy system for genre values (e.g., 'iab_content_3.0'). When present, genre values should be valid taxonomy IDs. Recommended for machine-readable brand safety evaluation.",
-      "type": "string"
-    },
-    "kind": {
-      "description": "What kind of content program this is. Helps agents interpret installments correctly: 'series' installments are TV/podcast episodes, 'publication' installments are print issues, 'event_series' installments are live event airings, 'rotation' installments are DOOH scheduling periods. Defaults to 'series' when absent.",
-      "enum": [
-        "series",
-        "publication",
-        "event_series",
-        "rotation"
-      ],
-      "type": "string"
+      "type": "string",
+      "description": "Taxonomy system for genre values (e.g., 'iab_content_3.0'). When present, genre values should be valid taxonomy IDs. Recommended for machine-readable brand safety evaluation."
     },
     "language": {
-      "description": "Primary language (BCP 47 tag, e.g., 'en', 'es-MX')",
-      "type": "string"
+      "type": "string",
+      "description": "Primary language (BCP 47 tag, e.g., 'en', 'es-MX')"
     },
-    "limited_series": {
-      "$ref": "limited-series.json",
-      "description": "When present, this collection is a limited series \u2014 a bounded run with a defined arc, installment count, and end date."
+    "content_rating": {
+      "$ref": "content-rating.json",
+      "description": "Baseline content rating for the collection. Individual installments may override this."
     },
-    "name": {
-      "description": "Human-readable collection name",
-      "type": "string"
+    "cadence": {
+      "$ref": "../enums/collection-cadence.json",
+      "description": "How frequently the collection releases new installments"
+    },
+    "season": {
+      "type": "string",
+      "description": "Current or most recent season identifier (e.g., '3', '2026', 'spring_2026'). A lightweight label \u2014 not a full season object."
+    },
+    "status": {
+      "$ref": "../enums/collection-status.json",
+      "description": "Lifecycle status of the collection"
     },
     "production_quality": {
       "$ref": "../enums/production-quality.json",
       "description": "Production quality tier. Seller-declared. Maps to OpenRTB content.prodq (professional=1, prosumer=2, ugc=3)."
     },
+    "talent": {
+      "type": "array",
+      "description": "Hosts, recurring cast, creators associated with the collection. Each talent entry may include a brand_url linking to their brand.json identity.",
+      "items": {
+        "$ref": "talent.json"
+      }
+    },
+    "special": {
+      "$ref": "special.json",
+      "description": "When present, this collection is a special \u2014 content anchored to a real-world event or occasion. Individual installments may override with their own event context."
+    },
+    "limited_series": {
+      "$ref": "limited-series.json",
+      "description": "When present, this collection is a limited series \u2014 a bounded run with a defined arc, installment count, and end date."
+    },
+    "distribution": {
+      "type": "array",
+      "description": "Where this collection is distributed. Each entry maps the collection to a publisher platform with platform-specific identifiers. Collections SHOULD include at least one platform-independent identifier (imdb_id, gracenote_id, eidr_id) when available.",
+      "items": {
+        "$ref": "collection-distribution.json"
+      }
+    },
+    "deadline_policy": {
+      "$ref": "deadline-policy.json",
+      "description": "Default deadline rules for installments of this collection. Agents compute absolute deadlines from each installment's scheduled_at and these lead times. Installments with explicit deadlines override this policy."
+    },
     "related_collections": {
+      "type": "array",
       "description": "Relationships to other collections (spin-offs, companion collections, etc.). Each entry references another collection by collection_id within the same publisher's adagents.json.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "collection_id": {
-            "description": "The related collection's collection_id within this seller's response",
-            "type": "string"
+            "type": "string",
+            "description": "The related collection's collection_id within this seller's response"
           },
           "relationship": {
             "$ref": "../enums/collection-relationship.json",
@@ -88,34 +106,16 @@
           "collection_id",
           "relationship"
         ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "season": {
-      "description": "Current or most recent season identifier (e.g., '3', '2026', 'spring_2026'). A lightweight label \u2014 not a full season object.",
-      "type": "string"
-    },
-    "special": {
-      "$ref": "special.json",
-      "description": "When present, this collection is a special \u2014 content anchored to a real-world event or occasion. Individual installments may override with their own event context."
+        "additionalProperties": false
+      }
     },
-    "status": {
-      "$ref": "../enums/collection-status.json",
-      "description": "Lifecycle status of the collection"
-    },
-    "talent": {
-      "description": "Hosts, recurring cast, creators associated with the collection. Each talent entry may include a brand_url linking to their brand.json identity.",
-      "items": {
-        "$ref": "talent.json"
-      },
-      "type": "array"
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "collection_id",
     "name"
   ],
-  "title": "Collection",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/content-rating.json b/schemas/cache/core/content-rating.json
index bc67a9d81..f608664ca 100644
--- a/schemas/cache/core/content-rating.json
+++ b/schemas/cache/core/content-rating.json
@@ -1,21 +1,21 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Content Rating",
   "description": "Content advisory rating using a specified rating system",
+  "type": "object",
   "properties": {
-    "rating": {
-      "description": "Rating value within the system (e.g., 'TV-PG', 'R', 'explicit')",
-      "type": "string"
-    },
     "system": {
       "$ref": "../enums/content-rating-system.json",
       "description": "Rating system used"
+    },
+    "rating": {
+      "type": "string",
+      "description": "Rating value within the system (e.g., 'TV-PG', 'R', 'explicit')"
     }
   },
   "required": [
     "system",
     "rating"
   ],
-  "title": "Content Rating",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-asset.json b/schemas/cache/core/creative-asset.json
index 0daca8edd..fbac32345 100644
--- a/schemas/cache/core/creative-asset.json
+++ b/schemas/cache/core/creative-asset.json
@@ -1,10 +1,23 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Creative Asset",
   "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party snippets",
+  "type": "object",
   "properties": {
+    "creative_id": {
+      "type": "string",
+      "description": "Unique identifier for the creative"
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable creative name"
+    },
+    "format_id": {
+      "$ref": "format-id.json",
+      "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats."
+    },
     "assets": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Assets required by the format, keyed by asset_id",
       "patternProperties": {
         "^[a-z0-9_]+$": {
@@ -54,76 +67,72 @@
           ]
         }
       },
-      "type": "object"
-    },
-    "creative_id": {
-      "description": "Unique identifier for the creative",
-      "type": "string"
-    },
-    "format_id": {
-      "$ref": "format-id.json",
-      "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats."
+      "additionalProperties": true
     },
     "inputs": {
+      "type": "array",
       "description": "Preview contexts for generative formats - defines what scenarios to generate previews for",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "context_description": {
-            "description": "Natural language description of the context for AI-generated content",
-            "type": "string"
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this preview variant"
           },
           "macros": {
+            "type": "object",
+            "description": "Macro values to apply for this preview",
             "additionalProperties": {
               "type": "string"
-            },
-            "description": "Macro values to apply for this preview",
-            "type": "object"
+            }
           },
-          "name": {
-            "description": "Human-readable name for this preview variant",
-            "type": "string"
+          "context_description": {
+            "type": "string",
+            "description": "Natural language description of the context for AI-generated content"
           }
         },
         "required": [
           "name"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": true
+      }
     },
-    "name": {
-      "description": "Human-readable creative name",
-      "type": "string"
-    },
-    "placement_ids": {
-      "description": "Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+    "tags": {
+      "type": "array",
+      "description": "User-defined tags for organization and searchability",
       "items": {
         "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "provenance": {
-      "$ref": "provenance.json",
-      "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging)."
+      }
     },
     "status": {
       "$ref": "../enums/creative-status.json",
       "description": "For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state)."
     },
-    "tags": {
-      "description": "User-defined tags for organization and searchability",
+    "weight": {
+      "type": "number",
+      "description": "Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.",
+      "minimum": 0,
+      "maximum": 100
+    },
+    "placement_ids": {
+      "type": "array",
+      "description": "Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
       "items": {
         "type": "string"
       },
-      "type": "array"
+      "minItems": 1
     },
-    "weight": {
-      "description": "Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.",
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
+    "industry_identifiers": {
+      "type": "array",
+      "description": "Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.",
+      "items": {
+        "$ref": "industry-identifier.json"
+      },
+      "uniqueItems": true
+    },
+    "provenance": {
+      "$ref": "provenance.json",
+      "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging)."
     }
   },
   "required": [
@@ -132,6 +141,5 @@
     "format_id",
     "assets"
   ],
-  "title": "Creative Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-assignment.json b/schemas/cache/core/creative-assignment.json
index fbc8f4c9d..ad69c6167 100644
--- a/schemas/cache/core/creative-assignment.json
+++ b/schemas/cache/core/creative-assignment.json
@@ -1,30 +1,30 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Creative Assignment",
   "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
+  "type": "object",
   "properties": {
     "creative_id": {
-      "description": "Unique identifier for the creative",
-      "type": "string"
+      "type": "string",
+      "description": "Unique identifier for the creative"
+    },
+    "weight": {
+      "type": "number",
+      "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+      "minimum": 0,
+      "maximum": 100
     },
     "placement_ids": {
+      "type": "array",
       "description": "Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "weight": {
-      "description": "Relative delivery weight for this creative (0\u2013100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally \u2014 a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
+      "minItems": 1
     }
   },
   "required": [
     "creative_id"
   ],
-  "title": "Creative Assignment",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-brief.json b/schemas/cache/core/creative-brief.json
index 6eb1942a5..916b182ae 100644
--- a/schemas/cache/core/creative-brief.json
+++ b/schemas/cache/core/creative-brief.json
@@ -1,135 +1,135 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Creative Brief",
   "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
+  "type": "object",
   "properties": {
+    "name": {
+      "type": "string",
+      "description": "Campaign or flight name for identification"
+    },
+    "objective": {
+      "type": "string",
+      "enum": [
+        "awareness",
+        "consideration",
+        "conversion",
+        "retention",
+        "engagement"
+      ],
+      "description": "Campaign objective that guides creative tone and call-to-action strategy"
+    },
+    "tone": {
+      "type": "string",
+      "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+    },
     "audience": {
-      "description": "Target audience description for this campaign",
-      "type": "string"
+      "type": "string",
+      "description": "Target audience description for this campaign"
     },
-    "compliance": {
-      "additionalProperties": true,
-      "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+    "territory": {
+      "type": "string",
+      "description": "Creative territory or positioning the campaign should occupy"
+    },
+    "messaging": {
+      "type": "object",
+      "description": "Messaging framework for the campaign",
       "properties": {
-        "prohibited_claims": {
-          "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
+        "headline": {
+          "type": "string",
+          "description": "Primary headline"
+        },
+        "tagline": {
+          "type": "string",
+          "description": "Supporting tagline or sub-headline"
+        },
+        "cta": {
+          "type": "string",
+          "description": "Call-to-action text"
+        },
+        "key_messages": {
+          "type": "array",
+          "description": "Key messages to communicate in priority order",
           "items": {
             "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
+          }
+        }
+      },
+      "additionalProperties": true
+    },
+    "reference_assets": {
+      "type": "array",
+      "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
+      "items": {
+        "$ref": "reference-asset.json"
+      }
+    },
+    "compliance": {
+      "type": "object",
+      "description": "Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based \u2014 distinct from brand-level disclaimers in brand.json.",
+      "properties": {
         "required_disclosures": {
+          "type": "array",
           "description": "Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
+              "text": {
+                "type": "string",
+                "description": "The disclosure text that must appear in the creative"
+              },
+              "position": {
+                "$ref": "../enums/disclosure-position.json",
+                "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative"
+              },
               "jurisdictions": {
+                "type": "array",
                 "description": "Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
                 "items": {
-                  "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$",
-                  "type": "string"
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}(-[A-Z0-9]{1,3})?$"
                 },
-                "minItems": 1,
-                "type": "array"
+                "minItems": 1
               },
-              "language": {
-                "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language.",
-                "type": "string"
+              "regulation": {
+                "type": "string",
+                "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
               },
               "min_duration_ms": {
-                "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.",
+                "type": "integer",
                 "minimum": 1,
-                "type": "integer"
+                "description": "Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance."
+              },
+              "language": {
+                "type": "string",
+                "description": "Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
               },
               "persistence": {
                 "$ref": "../enums/disclosure-persistence.json",
                 "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format."
-              },
-              "position": {
-                "$ref": "../enums/disclosure-position.json",
-                "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative"
-              },
-              "regulation": {
-                "description": "The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')",
-                "type": "string"
-              },
-              "text": {
-                "description": "The disclosure text that must appear in the creative",
-                "type": "string"
               }
             },
             "required": [
               "text"
             ],
-            "type": "object"
+            "additionalProperties": true
           },
-          "minItems": 1,
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "messaging": {
-      "additionalProperties": true,
-      "description": "Messaging framework for the campaign",
-      "properties": {
-        "cta": {
-          "description": "Call-to-action text",
-          "type": "string"
+          "minItems": 1
         },
-        "headline": {
-          "description": "Primary headline",
-          "type": "string"
-        },
-        "key_messages": {
-          "description": "Key messages to communicate in priority order",
+        "prohibited_claims": {
+          "type": "array",
+          "description": "Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.",
           "items": {
             "type": "string"
           },
-          "type": "array"
-        },
-        "tagline": {
-          "description": "Supporting tagline or sub-headline",
-          "type": "string"
+          "minItems": 1
         }
       },
-      "type": "object"
-    },
-    "name": {
-      "description": "Campaign or flight name for identification",
-      "type": "string"
-    },
-    "objective": {
-      "description": "Campaign objective that guides creative tone and call-to-action strategy",
-      "enum": [
-        "awareness",
-        "consideration",
-        "conversion",
-        "retention",
-        "engagement"
-      ],
-      "type": "string"
-    },
-    "reference_assets": {
-      "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
-      "items": {
-        "$ref": "reference-asset.json"
-      },
-      "type": "array"
-    },
-    "territory": {
-      "description": "Creative territory or positioning the campaign should occupy",
-      "type": "string"
-    },
-    "tone": {
-      "description": "Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')",
-      "type": "string"
+      "additionalProperties": true
     }
   },
   "required": [
     "name"
   ],
-  "title": "Creative Brief",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-consumption.json b/schemas/cache/core/creative-consumption.json
new file mode 100644
index 000000000..2e88952e9
--- /dev/null
+++ b/schemas/cache/core/creative-consumption.json
@@ -0,0 +1,29 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Consumption",
+  "description": "Structured consumption details returned by build_creative when a paid creative agent computes cost. Contains well-known fields for common consumption metrics. The consumption object is informational \u2014 it lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth, not consumption.",
+  "type": "object",
+  "properties": {
+    "tokens": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "LLM or generation tokens consumed during creative generation."
+    },
+    "images_generated": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of images produced during generation."
+    },
+    "renders": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of render passes performed (video, animation)."
+    },
+    "duration_seconds": {
+      "type": "number",
+      "minimum": 0,
+      "description": "Processing time billed, in seconds. For compute-time pricing models."
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/creative-filters.json b/schemas/cache/core/creative-filters.json
index a46b71021..1c7075b48 100644
--- a/schemas/cache/core/creative-filters.json
+++ b/schemas/cache/core/creative-filters.json
@@ -1,118 +1,118 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Creative Filters",
   "description": "Filter criteria for querying creatives from a creative library. By default, archived creatives are excluded from results. To include archived creatives, explicitly filter by status='archived' or include 'archived' in the statuses array.",
+  "type": "object",
   "properties": {
     "accounts": {
+      "type": "array",
       "description": "Filter creatives by owning accounts. Useful for agencies managing multiple client accounts.",
       "items": {
         "$ref": "account-ref.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "assigned_to_packages": {
-      "description": "Filter creatives assigned to any of these packages. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter.",
+    "statuses": {
+      "type": "array",
+      "description": "Filter by creative approval statuses",
       "items": {
-        "type": "string"
+        "$ref": "../enums/creative-status.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "concept_ids": {
-      "description": "Filter by creative concept IDs. Concepts group related creatives across sizes and formats (e.g., Flashtalking concepts, Celtra campaign folders, CM360 creative groups).",
+    "tags": {
+      "type": "array",
+      "description": "Filter by creative tags (all tags must match)",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "created_after": {
-      "description": "Filter creatives created after this date (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
+    "tags_any": {
+      "type": "array",
+      "description": "Filter by creative tags (any tag must match)",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
     },
-    "created_before": {
-      "description": "Filter creatives created before this date (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
+    "name_contains": {
+      "type": "string",
+      "description": "Filter by creative names containing this text (case-insensitive)"
     },
     "creative_ids": {
+      "type": "array",
       "description": "Filter by specific creative IDs",
       "items": {
         "type": "string"
       },
-      "maxItems": 100,
       "minItems": 1,
-      "type": "array"
+      "maxItems": 100
     },
-    "format_ids": {
-      "description": "Filter by structured format IDs. Returns creatives that match any of these formats.",
-      "items": {
-        "$ref": "format-id.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "created_after": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Filter creatives created after this date (ISO 8601)"
     },
-    "has_served": {
-      "description": "When true, return only creatives that have served at least one impression. When false, return only creatives that have never served.",
-      "type": "boolean"
+    "created_before": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Filter creatives created before this date (ISO 8601)"
     },
-    "has_variables": {
-      "description": "When true, return only creatives with dynamic variables (DCO). When false, return only static creatives.",
-      "type": "boolean"
+    "updated_after": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Filter creatives last updated after this date (ISO 8601)"
+    },
+    "updated_before": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Filter creatives last updated before this date (ISO 8601)"
+    },
+    "assigned_to_packages": {
+      "type": "array",
+      "description": "Filter creatives assigned to any of these packages. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
     },
     "media_buy_ids": {
+      "type": "array",
       "description": "Filter creatives assigned to any of these media buys. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "name_contains": {
-      "description": "Filter by creative names containing this text (case-insensitive)",
-      "type": "string"
+    "unassigned": {
+      "type": "boolean",
+      "description": "Filter for unassigned creatives when true, assigned creatives when false. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter."
     },
-    "statuses": {
-      "description": "Filter by creative approval statuses",
-      "items": {
-        "$ref": "../enums/creative-status.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "has_served": {
+      "type": "boolean",
+      "description": "When true, return only creatives that have served at least one impression. When false, return only creatives that have never served."
     },
-    "tags": {
-      "description": "Filter by creative tags (all tags must match)",
+    "concept_ids": {
+      "type": "array",
+      "description": "Filter by creative concept IDs. Concepts group related creatives across sizes and formats (e.g., Flashtalking concepts, Celtra campaign folders, CM360 creative groups).",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "tags_any": {
-      "description": "Filter by creative tags (any tag must match)",
+    "format_ids": {
+      "type": "array",
+      "description": "Filter by structured format IDs. Returns creatives that match any of these formats.",
       "items": {
-        "type": "string"
+        "$ref": "format-id.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "unassigned": {
-      "description": "Filter for unassigned creatives when true, assigned creatives when false. Sales-agent-specific \u2014 standalone creative agents SHOULD ignore this filter.",
-      "type": "boolean"
-    },
-    "updated_after": {
-      "description": "Filter creatives last updated after this date (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
-    },
-    "updated_before": {
-      "description": "Filter creatives last updated before this date (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
+    "has_variables": {
+      "type": "boolean",
+      "description": "When true, return only creatives with dynamic variables (DCO). When false, return only static creatives."
     }
   },
-  "title": "Creative Filters",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-item.json b/schemas/cache/core/creative-item.json
index b0deec051..9901b1cb5 100644
--- a/schemas/cache/core/creative-item.json
+++ b/schemas/cache/core/creative-item.json
@@ -1,27 +1,28 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Item",
   "description": "Item within a multi-asset creative format. Used for carousel products, native ad components, and other formats composed of multiple distinct elements.",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "asset_id": {
-          "description": "Unique identifier for the asset within the creative",
-          "type": "string"
-        },
         "asset_kind": {
+          "type": "string",
           "const": "media",
-          "description": "Discriminator indicating this is a media asset with content_uri",
-          "type": "string"
+          "description": "Discriminator indicating this is a media asset with content_uri"
         },
         "asset_type": {
-          "description": "Type of asset. Common types: thumbnail_image, product_image, featured_image, logo",
-          "type": "string"
+          "type": "string",
+          "description": "Type of asset. Common types: thumbnail_image, product_image, featured_image, logo"
+        },
+        "asset_id": {
+          "type": "string",
+          "description": "Unique identifier for the asset within the creative"
         },
         "content_uri": {
-          "description": "URL for media assets (images, videos, etc.)",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL for media assets (images, videos, etc.)"
         }
       },
       "required": [
@@ -30,39 +31,39 @@
         "asset_id",
         "content_uri"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "asset_id": {
-          "description": "Unique identifier for the asset within the creative",
-          "type": "string"
-        },
         "asset_kind": {
+          "type": "string",
           "const": "text",
-          "description": "Discriminator indicating this is a text asset with content",
-          "type": "string"
+          "description": "Discriminator indicating this is a text asset with content"
         },
         "asset_type": {
-          "description": "Type of asset. Common types: headline, body_text, cta_text, price_text, sponsor_name, author_name, click_url",
-          "type": "string"
+          "type": "string",
+          "description": "Type of asset. Common types: headline, body_text, cta_text, price_text, sponsor_name, author_name, click_url"
+        },
+        "asset_id": {
+          "type": "string",
+          "description": "Unique identifier for the asset within the creative"
         },
         "content": {
-          "description": "Text content for text-based assets like headlines, body text, CTA text, etc.",
           "oneOf": [
             {
-              "description": "Single text content value",
-              "type": "string"
+              "type": "string",
+              "description": "Single text content value"
             },
             {
+              "type": "array",
               "description": "Multiple text content values (for A/B testing or variations)",
               "items": {
                 "type": "string"
-              },
-              "type": "array"
+              }
             }
-          ]
+          ],
+          "description": "Text content for text-based assets like headlines, body text, CTA text, etc."
         }
       },
       "required": [
@@ -71,8 +72,7 @@
         "asset_id",
         "content"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Creative Item"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-manifest.json b/schemas/cache/core/creative-manifest.json
index c0b802ff7..d6ae87284 100644
--- a/schemas/cache/core/creative-manifest.json
+++ b/schemas/cache/core/creative-manifest.json
@@ -1,10 +1,15 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Creative Manifest",
   "description": "Complete specification of a creative: format_id + assets. Everything the creative needs \u2014 images, text, briefs, catalogs \u2014 lives in the assets map, declared by the format. Each asset is typed according to its asset_type from the format specification.",
+  "type": "object",
   "properties": {
+    "format_id": {
+      "$ref": "format-id.json",
+      "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'})."
+    },
     "assets": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance \u2014 each asset must match at least one valid asset type schema.",
       "patternProperties": {
         "^[a-z0-9_]+$": {
@@ -54,31 +59,34 @@
           ]
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "ext": {
-      "$ref": "ext.json"
+    "rights": {
+      "type": "array",
+      "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+      "items": {
+        "$ref": "rights-constraint.json"
+      }
     },
-    "format_id": {
-      "$ref": "format-id.json",
-      "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'})."
+    "industry_identifiers": {
+      "type": "array",
+      "description": "Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).",
+      "items": {
+        "$ref": "industry-identifier.json"
+      },
+      "uniqueItems": true
     },
     "provenance": {
       "$ref": "provenance.json",
       "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging)."
     },
-    "rights": {
-      "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
-      "items": {
-        "$ref": "rights-constraint.json"
-      },
-      "type": "array"
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "format_id",
     "assets"
   ],
-  "title": "Creative Manifest",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-policy.json b/schemas/cache/core/creative-policy.json
index 128ff3efd..682b8b463 100644
--- a/schemas/cache/core/creative-policy.json
+++ b/schemas/cache/core/creative-policy.json
@@ -1,7 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Creative Policy",
   "description": "Creative requirements and restrictions for a product",
+  "type": "object",
   "properties": {
     "co_branding": {
       "$ref": "../enums/co-branding-requirement.json",
@@ -11,13 +12,13 @@
       "$ref": "../enums/landing-page-requirement.json",
       "description": "Landing page requirements"
     },
-    "provenance_required": {
-      "description": "Whether creatives must include provenance metadata. When true, the seller requires buyers to attach provenance declarations to creative submissions. The seller may independently verify claims via get_creative_features.",
-      "type": "boolean"
-    },
     "templates_available": {
-      "description": "Whether creative templates are provided",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Whether creative templates are provided"
+    },
+    "provenance_required": {
+      "type": "boolean",
+      "description": "Whether creatives must include provenance metadata. When true, the seller requires buyers to attach provenance declarations to creative submissions. The seller may independently verify claims via get_creative_features."
     }
   },
   "required": [
@@ -25,6 +26,5 @@
     "landing_page",
     "templates_available"
   ],
-  "title": "Creative Policy",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-variable.json b/schemas/cache/core/creative-variable.json
index 08cf9d907..4894c0ccd 100644
--- a/schemas/cache/core/creative-variable.json
+++ b/schemas/cache/core/creative-variable.json
@@ -1,27 +1,19 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Creative Variable",
   "description": "A dynamic content variable (DCO slot) on a creative. Variables represent content that can change at serve time \u2014 headlines, images, product data, etc.",
+  "type": "object",
   "properties": {
-    "default_value": {
-      "description": "Default value used when no dynamic value is provided at serve time. All types are string-encoded: text/image/video/audio/url as literal strings, number as decimal (e.g., \"42.99\"), boolean as \"true\"/\"false\", color as \"#RRGGBB\", date as ISO 8601 (e.g., \"2026-12-25T00:00:00Z\").",
-      "type": "string"
+    "variable_id": {
+      "type": "string",
+      "description": "Variable identifier on the creative platform"
     },
     "name": {
-      "description": "Human-readable variable name",
-      "type": "string"
-    },
-    "required": {
-      "default": false,
-      "description": "Whether this variable must have a value for the creative to serve",
-      "type": "boolean"
-    },
-    "variable_id": {
-      "description": "Variable identifier on the creative platform",
-      "type": "string"
+      "type": "string",
+      "description": "Human-readable variable name"
     },
     "variable_type": {
-      "description": "Data type of the variable. Each type represents a semantic content slot: text (headlines, body copy), image/video/audio (media URLs), url (clickthrough or tracking URLs), number (prices, counts), boolean (conditional flags like show_discount or is_raining), color (hex color values), date (ISO 8601 date-time for countdowns and offer expirations).",
+      "type": "string",
       "enum": [
         "text",
         "image",
@@ -33,7 +25,16 @@
         "color",
         "date"
       ],
-      "type": "string"
+      "description": "Data type of the variable. Each type represents a semantic content slot: text (headlines, body copy), image/video/audio (media URLs), url (clickthrough or tracking URLs), number (prices, counts), boolean (conditional flags like show_discount or is_raining), color (hex color values), date (ISO 8601 date-time for countdowns and offer expirations)."
+    },
+    "default_value": {
+      "type": "string",
+      "description": "Default value used when no dynamic value is provided at serve time. All types are string-encoded: text/image/video/audio/url as literal strings, number as decimal (e.g., \"42.99\"), boolean as \"true\"/\"false\", color as \"#RRGGBB\", date as ISO 8601 (e.g., \"2026-12-25T00:00:00Z\")."
+    },
+    "required": {
+      "type": "boolean",
+      "description": "Whether this variable must have a value for the creative to serve",
+      "default": false
     }
   },
   "required": [
@@ -41,6 +42,5 @@
     "name",
     "variable_type"
   ],
-  "title": "Creative Variable",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-variant.json b/schemas/cache/core/creative-variant.json
index a2a18c3e9..14571e312 100644
--- a/schemas/cache/core/creative-variant.json
+++ b/schemas/cache/core/creative-variant.json
@@ -1,59 +1,59 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Variant",
+  "description": "A specific execution variant of a creative with delivery metrics. For catalog-driven packages, each catalog item rendered as a distinct ad execution is a variant \u2014 the variant's manifest includes the catalog reference with the specific item rendered. For asset group optimization, represents one combination of assets the platform selected. For generative creative, represents a platform-generated variant. For standard creatives, maps 1:1 with the creative itself.",
+  "type": "object",
   "allOf": [
     {
       "$ref": "delivery-metrics.json"
     },
     {
       "properties": {
+        "variant_id": {
+          "type": "string",
+          "description": "Platform-assigned identifier for this variant"
+        },
+        "manifest": {
+          "$ref": "creative-manifest.json",
+          "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets. Contains format_id and the resolved assets (specific headline, image, video, etc. the platform selected or generated). For Tier 2, shows which asset combination was picked. For Tier 3, contains the generated assets which may differ entirely from the input brand identity. Pass to preview_creative to re-render."
+        },
         "generation_context": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Input signals that triggered generation of this variant (Tier 3). Describes why the platform created this specific variant. Platforms should provide summarized or anonymized signals rather than raw user input. For web contexts, may include page topic or URL. For conversational contexts, an anonymized content signal. For search, query category or intent. When the content context is managed through AdCP content standards, reference the artifact directly via the artifact field.",
           "properties": {
+            "context_type": {
+              "type": "string",
+              "description": "Type of context that triggered generation (e.g., 'web_page', 'conversational', 'search', 'app', 'dooh')"
+            },
             "artifact": {
-              "additionalProperties": false,
+              "type": "object",
               "description": "Reference to the content-standards artifact that provided the generation context. Links this variant to the specific piece of content (article, video, podcast segment, etc.) where the ad was placed.",
               "properties": {
-                "artifact_id": {
-                  "description": "Artifact identifier within the property",
-                  "type": "string"
-                },
                 "property_id": {
                   "$ref": "identifier.json",
                   "description": "Property where the artifact appears"
+                },
+                "artifact_id": {
+                  "type": "string",
+                  "description": "Artifact identifier within the property"
                 }
               },
               "required": [
                 "property_id",
                 "artifact_id"
               ],
-              "type": "object"
-            },
-            "context_type": {
-              "description": "Type of context that triggered generation (e.g., 'web_page', 'conversational', 'search', 'app', 'dooh')",
-              "type": "string"
+              "additionalProperties": false
             },
             "ext": {
               "$ref": "ext.json"
             }
           },
-          "type": "object"
-        },
-        "manifest": {
-          "$ref": "creative-manifest.json",
-          "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets. Contains format_id and the resolved assets (specific headline, image, video, etc. the platform selected or generated). For Tier 2, shows which asset combination was picked. For Tier 3, contains the generated assets which may differ entirely from the input brand identity. Pass to preview_creative to re-render."
-        },
-        "variant_id": {
-          "description": "Platform-assigned identifier for this variant",
-          "type": "string"
+          "additionalProperties": true
         }
       },
       "required": [
         "variant_id"
       ]
     }
-  ],
-  "description": "A specific execution variant of a creative with delivery metrics. For catalog-driven packages, each catalog item rendered as a distinct ad execution is a variant \u2014 the variant's manifest includes the catalog reference with the specific item rendered. For asset group optimization, represents one combination of assets the platform selected. For generative creative, represents a platform-generated variant. For standard creatives, maps 1:1 with the creative itself.",
-  "title": "Creative Variant",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/data-provider-signal-selector.json b/schemas/cache/core/data-provider-signal-selector.json
index 6733e5a9c..28ac23e90 100644
--- a/schemas/cache/core/data-provider-signal-selector.json
+++ b/schemas/cache/core/data-provider-signal-selector.json
@@ -1,53 +1,54 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Data Provider Signal Selector",
   "description": "Selects signals from a data provider's adagents.json catalog. Used for product definitions and agent authorization. Supports three selection patterns: all signals, specific IDs, or by tags.",
   "discriminator": {
     "propertyName": "selection_type"
   },
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Select all signals from the data provider",
       "properties": {
         "data_provider_domain": {
+          "type": "string",
           "description": "Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "selection_type": {
+          "type": "string",
           "const": "all",
-          "description": "Discriminator indicating all signals from this data provider are included",
-          "type": "string"
+          "description": "Discriminator indicating all signals from this data provider are included"
         }
       },
       "required": [
         "data_provider_domain",
         "selection_type"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Select specific signals by ID",
       "properties": {
         "data_provider_domain": {
+          "type": "string",
           "description": "Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "selection_type": {
+          "type": "string",
           "const": "by_id",
-          "description": "Discriminator indicating selection by specific signal IDs",
-          "type": "string"
+          "description": "Discriminator indicating selection by specific signal IDs"
         },
         "signal_ids": {
+          "type": "array",
           "description": "Specific signal IDs from the data provider's catalog",
           "items": {
-            "pattern": "^[a-zA-Z0-9_-]+$",
-            "type": "string"
+            "type": "string",
+            "pattern": "^[a-zA-Z0-9_-]+$"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
       },
       "required": [
@@ -55,30 +56,30 @@
         "selection_type",
         "signal_ids"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Select signals by tag membership",
       "properties": {
         "data_provider_domain": {
+          "type": "string",
           "description": "Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "selection_type": {
+          "type": "string",
           "const": "by_tag",
-          "description": "Discriminator indicating selection by signal tags",
-          "type": "string"
+          "description": "Discriminator indicating selection by signal tags"
         },
         "signal_tags": {
+          "type": "array",
           "description": "Signal tags from the data provider's catalog. Selector covers all signals with these tags",
           "items": {
-            "pattern": "^[a-z0-9_-]+$",
-            "type": "string"
+            "type": "string",
+            "pattern": "^[a-z0-9_-]+$"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
       },
       "required": [
@@ -86,8 +87,7 @@
         "selection_type",
         "signal_tags"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Data Provider Signal Selector"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/date-range.json b/schemas/cache/core/date-range.json
index 2b9893f44..55d42a936 100644
--- a/schemas/cache/core/date-range.json
+++ b/schemas/cache/core/date-range.json
@@ -1,23 +1,23 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Date Range",
   "description": "A date range with inclusive start and end dates (ISO 8601 calendar dates). Used for billing periods, flight dates, and other calendar-day boundaries.",
+  "type": "object",
   "properties": {
-    "end": {
-      "description": "End date (inclusive), ISO 8601",
+    "start": {
+      "type": "string",
       "format": "date",
-      "type": "string"
+      "description": "Start date (inclusive), ISO 8601"
     },
-    "start": {
-      "description": "Start date (inclusive), ISO 8601",
+    "end": {
+      "type": "string",
       "format": "date",
-      "type": "string"
+      "description": "End date (inclusive), ISO 8601"
     }
   },
   "required": [
     "start",
     "end"
   ],
-  "title": "Date Range",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/datetime-range.json b/schemas/cache/core/datetime-range.json
index 1d4d89f5f..803a49f31 100644
--- a/schemas/cache/core/datetime-range.json
+++ b/schemas/cache/core/datetime-range.json
@@ -1,23 +1,23 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Datetime Range",
   "description": "A datetime range with inclusive start and end timestamps (ISO 8601 with timezone). Used for measurement windows, reporting periods, and other sub-day precision boundaries.",
+  "type": "object",
   "properties": {
-    "end": {
-      "description": "End timestamp (inclusive), ISO 8601",
+    "start": {
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Start timestamp (inclusive), ISO 8601"
     },
-    "start": {
-      "description": "Start timestamp (inclusive), ISO 8601",
+    "end": {
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "End timestamp (inclusive), ISO 8601"
     }
   },
   "required": [
     "start",
     "end"
   ],
-  "title": "Datetime Range",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/daypart-target.json b/schemas/cache/core/daypart-target.json
index 872eba66f..c920d9ac0 100644
--- a/schemas/cache/core/daypart-target.json
+++ b/schemas/cache/core/daypart-target.json
@@ -1,31 +1,32 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Daypart Target",
   "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
+  "type": "object",
   "properties": {
     "days": {
+      "type": "array",
       "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
       "items": {
         "$ref": "../enums/day-of-week.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "start_hour": {
+      "type": "integer",
+      "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
+      "minimum": 0,
+      "maximum": 23
     },
     "end_hour": {
+      "type": "integer",
       "description": "End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.",
-      "maximum": 24,
       "minimum": 1,
-      "type": "integer"
+      "maximum": 24
     },
     "label": {
-      "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')",
-      "type": "string"
-    },
-    "start_hour": {
-      "description": "Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.",
-      "maximum": 23,
-      "minimum": 0,
-      "type": "integer"
+      "type": "string",
+      "description": "Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
     }
   },
   "required": [
@@ -33,6 +34,5 @@
     "start_hour",
     "end_hour"
   ],
-  "title": "Daypart Target",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/deadline-policy.json b/schemas/cache/core/deadline-policy.json
index 3ce9a431e..e3df5d111 100644
--- a/schemas/cache/core/deadline-policy.json
+++ b/schemas/cache/core/deadline-policy.json
@@ -1,57 +1,57 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Deadline Policy",
   "description": "Default deadline rules for installments that do not declare their own deadlines. Agents compute absolute deadlines from the installment's scheduled_at and these lead times. Installments with explicit deadlines override this policy. booking_lead_days SHOULD be >= cancellation_lead_days (bookings close before cancellation window closes).",
-  "minProperties": 1,
+  "type": "object",
   "properties": {
     "booking_lead_days": {
-      "description": "Days before scheduled_at by which the placement must be booked",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
-    },
-    "business_days_only": {
-      "default": false,
-      "description": "When true, lead_days counts business days (Mon-Fri) rather than calendar days. Defaults to false.",
-      "type": "boolean"
+      "description": "Days before scheduled_at by which the placement must be booked"
     },
     "cancellation_lead_days": {
-      "description": "Days before scheduled_at by which cancellation is penalty-free",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Days before scheduled_at by which cancellation is penalty-free"
     },
     "material_stages": {
+      "type": "array",
       "description": "Default material submission stages. Items MUST be in chronological order (earliest due first). Agents compute due_at as: installment.scheduled_at minus lead_days.",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "label": {
-            "description": "What the seller needs at this stage",
-            "type": "string"
-          },
-          "lead_days": {
-            "description": "Days before scheduled_at this stage is due",
-            "minimum": 0,
-            "type": "integer"
-          },
           "stage": {
+            "type": "string",
             "description": "Stage identifier. Standard values: 'draft' (needs seller processing), 'final' (production-ready).",
             "examples": [
               "draft",
               "final"
-            ],
-            "type": "string"
+            ]
+          },
+          "lead_days": {
+            "type": "integer",
+            "minimum": 0,
+            "description": "Days before scheduled_at this stage is due"
+          },
+          "label": {
+            "type": "string",
+            "description": "What the seller needs at this stage"
           }
         },
         "required": [
           "stage",
           "lead_days"
         ],
-        "type": "object"
+        "additionalProperties": true
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "business_days_only": {
+      "type": "boolean",
+      "description": "When true, lead_days counts business days (Mon-Fri) rather than calendar days. Defaults to false.",
+      "default": false
     }
   },
-  "title": "Deadline Policy",
-  "type": "object"
+  "minProperties": 1,
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/delivery-forecast.json b/schemas/cache/core/delivery-forecast.json
index d39a7a5a9..6245328a0 100644
--- a/schemas/cache/core/delivery-forecast.json
+++ b/schemas/cache/core/delivery-forecast.json
@@ -1,58 +1,79 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Delivery Forecast",
   "description": "Forecasted delivery metrics for a proposal or product allocation. Publishers attach points to help buyers evaluate expected campaign performance before purchase.",
+  "type": "object",
   "properties": {
+    "points": {
+      "type": "array",
+      "description": "Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.",
+      "items": {
+        "$ref": "forecast-point.json"
+      },
+      "minItems": 1
+    },
+    "forecast_range_unit": {
+      "$ref": "../enums/forecast-range-unit.json",
+      "description": "How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package."
+    },
+    "method": {
+      "$ref": "../enums/forecast-method.json",
+      "description": "Method used to produce this forecast"
+    },
     "currency": {
-      "description": "ISO 4217 currency code for monetary values in this forecast (spend, budget)",
-      "type": "string"
+      "type": "string",
+      "description": "ISO 4217 currency code for monetary values in this forecast (spend, budget)"
+    },
+    "demographic_system": {
+      "$ref": "../enums/demographic-system.json",
+      "description": "Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation."
     },
     "demographic": {
+      "type": "string",
       "description": "Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.",
       "examples": [
         "P18-49",
         "A25-54",
         "W35+",
         "M18-34"
-      ],
-      "type": "string"
-    },
-    "demographic_system": {
-      "$ref": "../enums/demographic-system.json",
-      "description": "Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation."
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "forecast_range_unit": {
-      "$ref": "../enums/forecast-range-unit.json",
-      "description": "How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets."
-    },
-    "generated_at": {
-      "description": "When this forecast was computed",
-      "format": "date-time",
-      "type": "string"
-    },
-    "method": {
-      "$ref": "../enums/forecast-method.json",
-      "description": "Method used to produce this forecast"
+      ]
     },
-    "points": {
-      "description": "Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.",
-      "items": {
-        "$ref": "forecast-point.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "measurement_source": {
+      "type": "string",
+      "maxLength": 64,
+      "pattern": "^[a-z0-9_]+$",
+      "description": "Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation \u2014 measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.",
+      "examples": [
+        "nielsen",
+        "videoamp",
+        "comscore",
+        "geopath",
+        "barb",
+        "agf",
+        "oztam",
+        "kantar",
+        "barc",
+        "route",
+        "rajar",
+        "triton"
+      ]
     },
     "reach_unit": {
       "$ref": "../enums/reach-unit.json",
       "description": "Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison."
     },
+    "generated_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this forecast was computed"
+    },
     "valid_until": {
-      "description": "When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability.",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability."
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -60,6 +81,5 @@
     "method",
     "currency"
   ],
-  "title": "Delivery Forecast",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/delivery-metrics.json b/schemas/cache/core/delivery-metrics.json
index 1d589ce1d..cb8f06bfb 100644
--- a/schemas/cache/core/delivery-metrics.json
+++ b/schemas/cache/core/delivery-metrics.json
@@ -1,330 +1,326 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "dependencies": {
-    "reach": [
-      "reach_unit"
-    ]
-  },
+  "title": "Delivery Metrics",
   "description": "Standard delivery metrics that can be reported at media buy, package, or creative level",
+  "type": "object",
   "properties": {
-    "by_action_source": {
-      "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
-      "items": {
-        "additionalProperties": true,
-        "properties": {
-          "action_source": {
-            "$ref": "../enums/action-source.json",
-            "description": "Where the conversion occurred"
-          },
-          "count": {
-            "description": "Number of conversions from this action source",
-            "minimum": 0,
-            "type": "number"
-          },
-          "event_source_id": {
-            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)",
-            "type": "string"
-          },
-          "value": {
-            "description": "Total monetary value of conversions from this action source",
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "required": [
-          "action_source",
-          "count"
-        ],
-        "type": "object"
-      },
-      "type": "array"
+    "impressions": {
+      "type": "number",
+      "description": "Impressions delivered",
+      "minimum": 0
     },
-    "by_event_type": {
-      "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
-      "items": {
-        "additionalProperties": true,
-        "properties": {
-          "count": {
-            "description": "Number of events of this type",
-            "minimum": 0,
-            "type": "number"
-          },
-          "event_source_id": {
-            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)",
-            "type": "string"
-          },
-          "event_type": {
-            "$ref": "../enums/event-type.json",
-            "description": "The event type"
-          },
-          "value": {
-            "description": "Total monetary value of events of this type",
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "required": [
-          "event_type",
-          "count"
-        ],
-        "type": "object"
-      },
-      "type": "array"
+    "spend": {
+      "type": "number",
+      "description": "Amount spent",
+      "minimum": 0
     },
     "clicks": {
+      "type": "number",
       "description": "Total clicks",
+      "minimum": 0
+    },
+    "ctr": {
+      "type": "number",
+      "description": "Click-through rate (clicks/impressions)",
       "minimum": 0,
-      "type": "number"
+      "maximum": 1
+    },
+    "views": {
+      "type": "number",
+      "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+      "minimum": 0
     },
     "completed_views": {
+      "type": "number",
       "description": "Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "completion_rate": {
+      "type": "number",
       "description": "Completion rate (completed_views/impressions)",
-      "maximum": 1,
       "minimum": 0,
-      "type": "number"
+      "maximum": 1
+    },
+    "conversions": {
+      "type": "number",
+      "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
+      "minimum": 0
     },
     "conversion_value": {
+      "type": "number",
       "description": "Total monetary value of attributed conversions (in the reporting currency)",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
-    "conversions": {
-      "description": "Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.",
-      "minimum": 0,
-      "type": "number"
+    "roas": {
+      "type": "number",
+      "description": "Return on ad spend (conversion_value / spend)",
+      "minimum": 0
     },
     "cost_per_acquisition": {
+      "type": "number",
       "description": "Cost per conversion (spend / conversions)",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
-    "cost_per_click": {
-      "description": "Cost per click (spend / clicks)",
+    "new_to_brand_rate": {
+      "type": "number",
+      "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
       "minimum": 0,
-      "type": "number"
+      "maximum": 1
     },
-    "ctr": {
-      "description": "Click-through rate (clicks/impressions)",
-      "maximum": 1,
-      "minimum": 0,
-      "type": "number"
+    "leads": {
+      "type": "number",
+      "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
+      "minimum": 0
+    },
+    "by_event_type": {
+      "type": "array",
+      "description": "Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "event_type": {
+            "$ref": "../enums/event-type.json",
+            "description": "The event type"
+          },
+          "event_source_id": {
+            "type": "string",
+            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+          },
+          "count": {
+            "type": "number",
+            "description": "Number of events of this type",
+            "minimum": 0
+          },
+          "value": {
+            "type": "number",
+            "description": "Total monetary value of events of this type",
+            "minimum": 0
+          }
+        },
+        "required": [
+          "event_type",
+          "count"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "grps": {
+      "type": "number",
+      "description": "Gross Rating Points delivered (for CPP)",
+      "minimum": 0
+    },
+    "reach": {
+      "type": "number",
+      "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
+      "minimum": 0
+    },
+    "reach_unit": {
+      "allOf": [
+        {
+          "$ref": "../enums/reach-unit.json"
+        }
+      ],
+      "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
+    },
+    "frequency": {
+      "type": "number",
+      "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+      "minimum": 0
+    },
+    "quartile_data": {
+      "type": "object",
+      "description": "Audio/video quartile completion data",
+      "properties": {
+        "q1_views": {
+          "type": "number",
+          "description": "25% completion views",
+          "minimum": 0
+        },
+        "q2_views": {
+          "type": "number",
+          "description": "50% completion views",
+          "minimum": 0
+        },
+        "q3_views": {
+          "type": "number",
+          "description": "75% completion views",
+          "minimum": 0
+        },
+        "q4_views": {
+          "type": "number",
+          "description": "100% completion views",
+          "minimum": 0
+        }
+      }
     },
     "dooh_metrics": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "DOOH-specific metrics (only included for DOOH campaigns)",
       "properties": {
-        "calculation_notes": {
-          "description": "Explanation of how DOOH impressions were calculated",
-          "type": "string"
-        },
         "loop_plays": {
+          "type": "integer",
           "description": "Number of times ad played in rotation",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "screen_time_seconds": {
-          "description": "Total display time in seconds",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
         },
         "screens_used": {
+          "type": "integer",
           "description": "Number of unique screens displaying the ad",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
+        },
+        "screen_time_seconds": {
+          "type": "integer",
+          "description": "Total display time in seconds",
+          "minimum": 0
         },
         "sov_achieved": {
+          "type": "number",
           "description": "Actual share of voice delivered (0.0 to 1.0)",
-          "maximum": 1,
           "minimum": 0,
-          "type": "number"
+          "maximum": 1
+        },
+        "calculation_notes": {
+          "type": "string",
+          "description": "Explanation of how DOOH impressions were calculated"
         },
         "venue_breakdown": {
+          "type": "array",
           "description": "Per-venue performance breakdown",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
+              "venue_id": {
+                "type": "string",
+                "description": "Venue identifier"
+              },
+              "venue_name": {
+                "type": "string",
+                "description": "Human-readable venue name"
+              },
+              "venue_type": {
+                "type": "string",
+                "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"
+              },
               "impressions": {
+                "type": "integer",
                 "description": "Impressions delivered at this venue",
-                "minimum": 0,
-                "type": "integer"
+                "minimum": 0
               },
               "loop_plays": {
+                "type": "integer",
                 "description": "Loop plays at this venue",
-                "minimum": 0,
-                "type": "integer"
+                "minimum": 0
               },
               "screens_used": {
+                "type": "integer",
                 "description": "Number of screens used at this venue",
-                "minimum": 0,
-                "type": "integer"
-              },
-              "venue_id": {
-                "description": "Venue identifier",
-                "type": "string"
-              },
-              "venue_name": {
-                "description": "Human-readable venue name",
-                "type": "string"
-              },
-              "venue_type": {
-                "description": "Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')",
-                "type": "string"
+                "minimum": 0
               }
             },
             "required": [
               "venue_id",
               "impressions"
             ],
-            "type": "object"
-          },
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "engagement_rate": {
-      "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
-      "maximum": 1,
-      "minimum": 0,
-      "type": "number"
-    },
-    "engagements": {
-      "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
-      "minimum": 0,
-      "type": "number"
-    },
-    "follows": {
-      "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
-      "minimum": 0,
-      "type": "number"
-    },
-    "frequency": {
-      "description": "Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
-      "minimum": 0,
-      "type": "number"
-    },
-    "grps": {
-      "description": "Gross Rating Points delivered (for CPP)",
-      "minimum": 0,
-      "type": "number"
-    },
-    "impressions": {
-      "description": "Impressions delivered",
-      "minimum": 0,
-      "type": "number"
-    },
-    "leads": {
-      "description": "Leads generated (convenience alias for by_event_type where event_type='lead')",
-      "minimum": 0,
-      "type": "number"
-    },
-    "new_to_brand_rate": {
-      "description": "Fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
-      "maximum": 1,
-      "minimum": 0,
-      "type": "number"
-    },
-    "profile_visits": {
-      "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
-      "minimum": 0,
-      "type": "number"
-    },
-    "quartile_data": {
-      "description": "Audio/video quartile completion data",
-      "properties": {
-        "q1_views": {
-          "description": "25% completion views",
-          "minimum": 0,
-          "type": "number"
-        },
-        "q2_views": {
-          "description": "50% completion views",
-          "minimum": 0,
-          "type": "number"
-        },
-        "q3_views": {
-          "description": "75% completion views",
-          "minimum": 0,
-          "type": "number"
-        },
-        "q4_views": {
-          "description": "100% completion views",
-          "minimum": 0,
-          "type": "number"
+            "additionalProperties": true
+          }
         }
       },
-      "type": "object"
-    },
-    "reach": {
-      "description": "Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified \u2014 do not compare reach values across packages or media buys without a common reach_unit.",
-      "minimum": 0,
-      "type": "number"
-    },
-    "reach_unit": {
-      "allOf": [
-        {
-          "$ref": "../enums/reach-unit.json"
-        }
-      ],
-      "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
-    },
-    "roas": {
-      "description": "Return on ad spend (conversion_value / spend)",
-      "minimum": 0,
-      "type": "number"
-    },
-    "saves": {
-      "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
-      "minimum": 0,
-      "type": "number"
-    },
-    "spend": {
-      "description": "Amount spent",
-      "minimum": 0,
-      "type": "number"
+      "additionalProperties": true
     },
     "viewability": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.",
       "properties": {
         "measurable_impressions": {
+          "type": "number",
           "description": "Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).",
-          "minimum": 0,
-          "type": "number"
-        },
-        "standard": {
-          "description": "Viewability measurement standard. 'mrc': 50% of pixels in view for 1 second (display) or 2 seconds (video), per MRC/IAB guidelines. 'groupm': 100% of pixels in view for the same durations. These are materially different thresholds and should not be compared across standards.",
-          "enum": [
-            "mrc",
-            "groupm"
-          ],
-          "type": "string"
+          "minimum": 0
         },
         "viewable_impressions": {
+          "type": "number",
           "description": "Impressions that met the viewability threshold defined by the measurement standard.",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
         "viewable_rate": {
+          "type": "number",
           "description": "Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.",
-          "maximum": 1,
           "minimum": 0,
-          "type": "number"
+          "maximum": 1
+        },
+        "standard": {
+          "$ref": "../enums/viewability-standard.json",
+          "description": "Viewability measurement standard applied to these metrics."
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "views": {
-      "description": "Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views \u00d7 rate.",
+    "engagements": {
+      "type": "number",
+      "description": "Total engagements \u2014 direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+      "minimum": 0
+    },
+    "follows": {
+      "type": "number",
+      "description": "New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.",
+      "minimum": 0
+    },
+    "saves": {
+      "type": "number",
+      "description": "Saves, bookmarks, playlist adds, pins attributed to this delivery.",
+      "minimum": 0
+    },
+    "profile_visits": {
+      "type": "number",
+      "description": "Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+      "minimum": 0
+    },
+    "engagement_rate": {
+      "type": "number",
+      "description": "Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.",
       "minimum": 0,
-      "type": "number"
+      "maximum": 1
+    },
+    "cost_per_click": {
+      "type": "number",
+      "description": "Cost per click (spend / clicks)",
+      "minimum": 0
+    },
+    "by_action_source": {
+      "type": "array",
+      "description": "Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "action_source": {
+            "$ref": "../enums/action-source.json",
+            "description": "Where the conversion occurred"
+          },
+          "event_source_id": {
+            "type": "string",
+            "description": "Event source that produced these conversions (for disambiguation when multiple event sources are configured)"
+          },
+          "count": {
+            "type": "number",
+            "description": "Number of conversions from this action source",
+            "minimum": 0
+          },
+          "value": {
+            "type": "number",
+            "description": "Total monetary value of conversions from this action source",
+            "minimum": 0
+          }
+        },
+        "required": [
+          "action_source",
+          "count"
+        ],
+        "additionalProperties": true
+      }
     }
   },
-  "title": "Delivery Metrics",
-  "type": "object"
+  "dependencies": {
+    "reach": [
+      "reach_unit"
+    ]
+  },
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/deployment.json b/schemas/cache/core/deployment.json
index b240bb96b..f592e6385 100644
--- a/schemas/cache/core/deployment.json
+++ b/schemas/cache/core/deployment.json
@@ -1,40 +1,41 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Deployment",
   "description": "A signal deployment to a specific deployment target with activation status and key",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
+        "type": {
+          "type": "string",
+          "const": "platform",
+          "description": "Discriminator indicating this is a platform-based deployment"
+        },
+        "platform": {
+          "type": "string",
+          "description": "Platform identifier for DSPs"
+        },
         "account": {
-          "description": "Account identifier if applicable",
-          "type": "string"
+          "type": "string",
+          "description": "Account identifier if applicable"
+        },
+        "is_live": {
+          "type": "boolean",
+          "description": "Whether signal is currently active on this deployment"
         },
         "activation_key": {
           "$ref": "activation-key.json",
           "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment."
         },
-        "deployed_at": {
-          "description": "Timestamp when activation completed (if is_live=true)",
-          "format": "date-time",
-          "type": "string"
-        },
         "estimated_activation_duration_minutes": {
+          "type": "number",
           "description": "Estimated time to activate if not live, or to complete activation if in progress",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
-        "is_live": {
-          "description": "Whether signal is currently active on this deployment",
-          "type": "boolean"
-        },
-        "platform": {
-          "description": "Platform identifier for DSPs",
-          "type": "string"
-        },
-        "type": {
-          "const": "platform",
-          "description": "Discriminator indicating this is a platform-based deployment",
-          "type": "string"
+        "deployed_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Timestamp when activation completed (if is_live=true)"
         }
       },
       "required": [
@@ -42,42 +43,42 @@
         "platform",
         "is_live"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
+        "type": {
+          "type": "string",
+          "const": "agent",
+          "description": "Discriminator indicating this is an agent URL-based deployment"
+        },
+        "agent_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL identifying the deployment agent"
+        },
         "account": {
-          "description": "Account identifier if applicable",
-          "type": "string"
+          "type": "string",
+          "description": "Account identifier if applicable"
+        },
+        "is_live": {
+          "type": "boolean",
+          "description": "Whether signal is currently active on this deployment"
         },
         "activation_key": {
           "$ref": "activation-key.json",
           "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment."
         },
-        "agent_url": {
-          "description": "URL identifying the deployment agent",
-          "format": "uri",
-          "type": "string"
-        },
-        "deployed_at": {
-          "description": "Timestamp when activation completed (if is_live=true)",
-          "format": "date-time",
-          "type": "string"
-        },
         "estimated_activation_duration_minutes": {
+          "type": "number",
           "description": "Estimated time to activate if not live, or to complete activation if in progress",
-          "minimum": 0,
-          "type": "number"
-        },
-        "is_live": {
-          "description": "Whether signal is currently active on this deployment",
-          "type": "boolean"
+          "minimum": 0
         },
-        "type": {
-          "const": "agent",
-          "description": "Discriminator indicating this is an agent URL-based deployment",
-          "type": "string"
+        "deployed_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Timestamp when activation completed (if is_live=true)"
         }
       },
       "required": [
@@ -85,8 +86,7 @@
         "agent_url",
         "is_live"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Deployment"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/destination-item.json b/schemas/cache/core/destination-item.json
index 5ef65a9c8..6ee35503f 100644
--- a/schemas/cache/core/destination-item.json
+++ b/schemas/cache/core/destination-item.json
@@ -1,167 +1,167 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Destination Item",
   "description": "A travel destination within a destination-type catalog. Carries the location, imagery, and pricing data that platforms use for destination ads and travel remarketing. Maps to Meta destination catalogs, Google travel ads, and similar formats.",
-  "examples": [
-    {
-      "data": {
-        "city": "Barcelona",
-        "country": "ES",
-        "description": "Mediterranean city blending Gaud\u00ed architecture, beaches, and world-class dining.",
-        "destination_id": "barcelona",
-        "destination_type": "urban",
-        "image_url": "https://images.acmetravel.com/barcelona/hero.jpg",
-        "location": {
-          "lat": 41.3874,
-          "lng": 2.1686
-        },
-        "name": "Barcelona",
-        "price": {
-          "amount": 399,
-          "currency": "EUR"
-        },
-        "rating": 4.7,
-        "region": "Catalonia",
-        "tags": [
-          "city-break",
-          "beach",
-          "culture"
-        ],
-        "url": "https://acmetravel.com/destinations/barcelona"
-      },
-      "description": "European city break"
-    },
-    {
-      "data": {
-        "country": "CH",
-        "description": "Gateway to the Jungfrau region with paragliding, hiking, and glacier views.",
-        "destination_id": "swiss-alps-interlaken",
-        "destination_type": "adventure",
-        "location": {
-          "lat": 46.6863,
-          "lng": 7.8632
-        },
-        "name": "Swiss Alps \u2014 Interlaken",
-        "price": {
-          "amount": 799,
-          "currency": "CHF"
-        },
-        "tags": [
-          "adventure",
-          "mountains",
-          "winter-sports"
-        ],
-        "url": "https://acmetravel.com/destinations/interlaken"
-      },
-      "description": "Adventure destination"
-    }
-  ],
+  "type": "object",
   "properties": {
-    "assets": {
-      "description": "Typed creative asset pools for this destination. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-      "items": {
-        "$ref": "offering-asset-group.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "city": {
-      "description": "City name, if applicable.",
-      "type": "string"
+    "destination_id": {
+      "type": "string",
+      "description": "Unique identifier for this destination."
     },
-    "country": {
-      "description": "ISO 3166-1 alpha-2 country code.",
-      "pattern": "^[A-Z]{2}$",
-      "type": "string"
+    "name": {
+      "type": "string",
+      "description": "Destination name (e.g., 'Barcelona', 'Bali', 'Swiss Alps')."
     },
     "description": {
-      "description": "Destination description highlighting attractions and appeal.",
-      "type": "string"
+      "type": "string",
+      "description": "Destination description highlighting attractions and appeal."
     },
-    "destination_id": {
-      "description": "Unique identifier for this destination.",
-      "type": "string"
-    },
-    "destination_type": {
-      "description": "Destination category.",
-      "enum": [
-        "beach",
-        "mountain",
-        "urban",
-        "cultural",
-        "adventure",
-        "wellness",
-        "cruise"
-      ],
-      "type": "string"
+    "city": {
+      "type": "string",
+      "description": "City name, if applicable."
     },
-    "ext": {
-      "$ref": "ext.json"
+    "region": {
+      "type": "string",
+      "description": "State, province, or region name."
     },
-    "image_url": {
-      "description": "Destination hero image URL.",
-      "format": "uri",
-      "type": "string"
+    "country": {
+      "type": "string",
+      "pattern": "^[A-Z]{2}$",
+      "description": "ISO 3166-1 alpha-2 country code."
     },
     "location": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Geographic coordinates of the destination.",
       "properties": {
         "lat": {
-          "description": "Latitude in decimal degrees (WGS 84).",
-          "maximum": 90,
+          "type": "number",
           "minimum": -90,
-          "type": "number"
+          "maximum": 90,
+          "description": "Latitude in decimal degrees (WGS 84)."
         },
         "lng": {
-          "description": "Longitude in decimal degrees (WGS 84).",
-          "maximum": 180,
+          "type": "number",
           "minimum": -180,
-          "type": "number"
+          "maximum": 180,
+          "description": "Longitude in decimal degrees (WGS 84)."
         }
       },
       "required": [
         "lat",
         "lng"
       ],
-      "type": "object"
+      "additionalProperties": false
     },
-    "name": {
-      "description": "Destination name (e.g., 'Barcelona', 'Bali', 'Swiss Alps').",
-      "type": "string"
+    "destination_type": {
+      "type": "string",
+      "enum": [
+        "beach",
+        "mountain",
+        "urban",
+        "cultural",
+        "adventure",
+        "wellness",
+        "cruise"
+      ],
+      "description": "Destination category."
     },
     "price": {
       "$ref": "price.json",
       "description": "Starting price for a trip to this destination."
     },
+    "image_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Destination hero image URL."
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Destination landing page or booking URL."
+    },
     "rating": {
-      "description": "Destination rating (1\u20135).",
-      "maximum": 5,
+      "type": "number",
       "minimum": 1,
-      "type": "number"
-    },
-    "region": {
-      "description": "State, province, or region name.",
-      "type": "string"
+      "maximum": 5,
+      "description": "Destination rating (1\u20135)."
     },
     "tags": {
+      "type": "array",
       "description": "Tags for filtering (e.g., 'family', 'romantic', 'solo', 'winter-sun').",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "url": {
-      "description": "Destination landing page or booking URL.",
-      "format": "uri",
-      "type": "string"
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this destination. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "destination_id",
     "name"
   ],
-  "title": "Destination Item",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "European city break",
+      "data": {
+        "destination_id": "barcelona",
+        "name": "Barcelona",
+        "description": "Mediterranean city blending Gaud\u00ed architecture, beaches, and world-class dining.",
+        "city": "Barcelona",
+        "region": "Catalonia",
+        "country": "ES",
+        "location": {
+          "lat": 41.3874,
+          "lng": 2.1686
+        },
+        "destination_type": "urban",
+        "price": {
+          "amount": 399,
+          "currency": "EUR"
+        },
+        "image_url": "https://images.acmetravel.com/barcelona/hero.jpg",
+        "url": "https://acmetravel.com/destinations/barcelona",
+        "rating": 4.7,
+        "tags": [
+          "city-break",
+          "beach",
+          "culture"
+        ]
+      }
+    },
+    {
+      "description": "Adventure destination",
+      "data": {
+        "destination_id": "swiss-alps-interlaken",
+        "name": "Swiss Alps \u2014 Interlaken",
+        "description": "Gateway to the Jungfrau region with paragliding, hiking, and glacier views.",
+        "country": "CH",
+        "location": {
+          "lat": 46.6863,
+          "lng": 7.8632
+        },
+        "destination_type": "adventure",
+        "price": {
+          "amount": 799,
+          "currency": "CHF"
+        },
+        "url": "https://acmetravel.com/destinations/interlaken",
+        "tags": [
+          "adventure",
+          "mountains",
+          "winter-sports"
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/destination.json b/schemas/cache/core/destination.json
index 323cd69a1..1625db1a4 100644
--- a/schemas/cache/core/destination.json
+++ b/schemas/cache/core/destination.json
@@ -1,52 +1,52 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Destination",
   "description": "A deployment target where signals can be activated (DSP, sales agent, etc.)",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "account": {
-          "description": "Optional account identifier on the platform",
-          "type": "string"
-        },
-        "platform": {
-          "description": "Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')",
-          "type": "string"
-        },
         "type": {
           "const": "platform",
           "description": "Discriminator indicating this is a platform-based deployment"
+        },
+        "platform": {
+          "type": "string",
+          "description": "Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')"
+        },
+        "account": {
+          "type": "string",
+          "description": "Optional account identifier on the platform"
         }
       },
       "required": [
         "type",
         "platform"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "properties": {
-        "account": {
-          "description": "Optional account identifier on the agent",
-          "type": "string"
+        "type": {
+          "const": "agent",
+          "description": "Discriminator indicating this is an agent URL-based deployment"
         },
         "agent_url": {
-          "description": "URL identifying the deployment agent (for sales agents, etc.)",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL identifying the deployment agent (for sales agents, etc.)"
         },
-        "type": {
-          "const": "agent",
-          "description": "Discriminator indicating this is an agent URL-based deployment"
+        "account": {
+          "type": "string",
+          "description": "Optional account identifier on the agent"
         }
       },
       "required": [
         "type",
         "agent_url"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Destination"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/duration.json b/schemas/cache/core/duration.json
index 785ceae57..c66f389c1 100644
--- a/schemas/cache/core/duration.json
+++ b/schemas/cache/core/duration.json
@@ -1,15 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Duration",
   "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
+  "type": "object",
   "properties": {
     "interval": {
-      "description": "Number of time units. Must be 1 when unit is 'campaign'.",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Number of time units. Must be 1 when unit is 'campaign'."
     },
     "unit": {
-      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight.",
+      "type": "string",
       "enum": [
         "seconds",
         "minutes",
@@ -17,13 +18,12 @@
         "days",
         "campaign"
       ],
-      "type": "string"
+      "description": "Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
     }
   },
   "required": [
     "interval",
     "unit"
   ],
-  "title": "Duration",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/education-item.json b/schemas/cache/core/education-item.json
index ea8d3cd81..484e904f9 100644
--- a/schemas/cache/core/education-item.json
+++ b/schemas/cache/core/education-item.json
@@ -1,70 +1,31 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Education Item",
   "description": "An educational program or course within an education-type catalog. Carries the program details that platforms use for education ads and student recruitment campaigns. Maps to Google DynamicEducationAsset, schema.org Course, and similar formats.",
-  "examples": [
-    {
-      "data": {
-        "degree_type": "master",
-        "description": "Two-year research master's covering AI, distributed systems, and software engineering. Taught in English with industry internship track.",
-        "duration": "2 years",
-        "language": "en",
-        "level": "advanced",
-        "location": "Amsterdam, NL",
-        "modality": "in_person",
-        "name": "MSc Computer Science",
-        "price": {
-          "amount": 2314,
-          "currency": "EUR",
-          "period": "year"
-        },
-        "program_id": "uva-msc-cs-2025",
-        "school": "University of Amsterdam",
-        "start_date": "2025-09-01",
-        "subject": "computer-science",
-        "tags": [
-          "stem",
-          "research"
-        ],
-        "url": "https://www.uva.nl/programmes/masters/computer-science"
-      },
-      "description": "University master's program"
-    },
-    {
-      "data": {
-        "degree_type": "certificate",
-        "description": "8-week online program covering SEO, paid media, analytics, and social strategy.",
-        "duration": "8 weeks",
-        "level": "beginner",
-        "modality": "online",
-        "name": "Digital Marketing Certificate",
-        "price": {
-          "amount": 499,
-          "currency": "USD"
-        },
-        "program_id": "acme-digital-mkt-cert",
-        "school": "Acme Academy",
-        "subject": "marketing",
-        "tags": [
-          "self-paced",
-          "career-change"
-        ],
-        "url": "https://academy.acme.com/digital-marketing"
-      },
-      "description": "Online professional certificate"
-    }
-  ],
+  "type": "object",
   "properties": {
-    "assets": {
-      "description": "Typed creative asset pools for this program. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (campus/program hero), 'images_vertical' (9:16 for Stories), 'logo' (institution logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-      "items": {
-        "$ref": "offering-asset-group.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "program_id": {
+      "type": "string",
+      "description": "Unique identifier for this program or course."
+    },
+    "name": {
+      "type": "string",
+      "description": "Program or course name (e.g., 'MSc Computer Science', 'Digital Marketing Certificate')."
+    },
+    "school": {
+      "type": "string",
+      "description": "Institution or provider name."
+    },
+    "description": {
+      "type": "string",
+      "description": "Program description including curriculum highlights and outcomes."
+    },
+    "subject": {
+      "type": "string",
+      "description": "Subject area or field of study (e.g., 'computer-science', 'business', 'healthcare')."
     },
     "degree_type": {
-      "description": "Type of credential awarded.",
+      "type": "string",
       "enum": [
         "certificate",
         "associate",
@@ -74,87 +35,75 @@
         "professional",
         "bootcamp"
       ],
-      "type": "string"
-    },
-    "description": {
-      "description": "Program description including curriculum highlights and outcomes.",
-      "type": "string"
-    },
-    "duration": {
-      "description": "Program duration as a human-readable string (e.g., '4 weeks', '2 years', '6 months').",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "image_url": {
-      "description": "Program or institution image URL.",
-      "format": "uri",
-      "type": "string"
-    },
-    "language": {
-      "description": "Language of instruction (e.g., 'en', 'nl', 'es').",
-      "type": "string"
+      "description": "Type of credential awarded."
     },
     "level": {
-      "description": "Difficulty or prerequisite level.",
+      "type": "string",
       "enum": [
         "beginner",
         "intermediate",
         "advanced"
       ],
-      "type": "string"
+      "description": "Difficulty or prerequisite level."
     },
-    "location": {
-      "description": "Campus or instruction location (e.g., 'Amsterdam, NL'). Omit for fully online programs.",
-      "type": "string"
+    "price": {
+      "$ref": "price.json",
+      "description": "Tuition or course fee."
+    },
+    "duration": {
+      "type": "string",
+      "description": "Program duration as a human-readable string (e.g., '4 weeks', '2 years', '6 months')."
+    },
+    "start_date": {
+      "type": "string",
+      "format": "date",
+      "description": "Next available start date (ISO 8601 date)."
+    },
+    "language": {
+      "type": "string",
+      "description": "Language of instruction (e.g., 'en', 'nl', 'es')."
     },
     "modality": {
-      "description": "Delivery format.",
+      "type": "string",
       "enum": [
         "online",
         "in_person",
         "hybrid"
       ],
-      "type": "string"
-    },
-    "name": {
-      "description": "Program or course name (e.g., 'MSc Computer Science', 'Digital Marketing Certificate').",
-      "type": "string"
-    },
-    "price": {
-      "$ref": "price.json",
-      "description": "Tuition or course fee."
+      "description": "Delivery format."
     },
-    "program_id": {
-      "description": "Unique identifier for this program or course.",
-      "type": "string"
-    },
-    "school": {
-      "description": "Institution or provider name.",
-      "type": "string"
+    "location": {
+      "type": "string",
+      "description": "Campus or instruction location (e.g., 'Amsterdam, NL'). Omit for fully online programs."
     },
-    "start_date": {
-      "description": "Next available start date (ISO 8601 date).",
-      "format": "date",
-      "type": "string"
+    "image_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Program or institution image URL."
     },
-    "subject": {
-      "description": "Subject area or field of study (e.g., 'computer-science', 'business', 'healthcare').",
-      "type": "string"
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Program landing page or enrollment URL."
     },
     "tags": {
+      "type": "array",
       "description": "Tags for filtering (e.g., 'stem', 'scholarship-available', 'evening-classes').",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "url": {
-      "description": "Program landing page or enrollment URL.",
-      "format": "uri",
-      "type": "string"
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this program. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (campus/program hero), 'images_vertical' (9:16 for Stories), 'logo' (institution logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -162,6 +111,57 @@
     "name",
     "school"
   ],
-  "title": "Education Item",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "University master's program",
+      "data": {
+        "program_id": "uva-msc-cs-2025",
+        "name": "MSc Computer Science",
+        "school": "University of Amsterdam",
+        "description": "Two-year research master's covering AI, distributed systems, and software engineering. Taught in English with industry internship track.",
+        "subject": "computer-science",
+        "degree_type": "master",
+        "level": "advanced",
+        "price": {
+          "amount": 2314,
+          "currency": "EUR",
+          "period": "year"
+        },
+        "duration": "2 years",
+        "start_date": "2025-09-01",
+        "language": "en",
+        "modality": "in_person",
+        "location": "Amsterdam, NL",
+        "url": "https://www.uva.nl/programmes/masters/computer-science",
+        "tags": [
+          "stem",
+          "research"
+        ]
+      }
+    },
+    {
+      "description": "Online professional certificate",
+      "data": {
+        "program_id": "acme-digital-mkt-cert",
+        "name": "Digital Marketing Certificate",
+        "school": "Acme Academy",
+        "description": "8-week online program covering SEO, paid media, analytics, and social strategy.",
+        "subject": "marketing",
+        "degree_type": "certificate",
+        "level": "beginner",
+        "price": {
+          "amount": 499,
+          "currency": "USD"
+        },
+        "duration": "8 weeks",
+        "modality": "online",
+        "url": "https://academy.acme.com/digital-marketing",
+        "tags": [
+          "self-paced",
+          "career-change"
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/event-custom-data.json b/schemas/cache/core/event-custom-data.json
index 06c7086e5..de86963f7 100644
--- a/schemas/cache/core/event-custom-data.json
+++ b/schemas/cache/core/event-custom-data.json
@@ -1,85 +1,85 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Event Custom Data",
   "description": "Event-specific data for attribution and reporting",
+  "type": "object",
   "properties": {
-    "content_category": {
-      "description": "Category of the product or content",
-      "type": "string"
+    "value": {
+      "type": "number",
+      "description": "Monetary value of the event (should be accompanied by currency)",
+      "minimum": 0
+    },
+    "currency": {
+      "type": "string",
+      "pattern": "^[A-Z]{3}$",
+      "description": "ISO 4217 currency code"
+    },
+    "order_id": {
+      "type": "string",
+      "description": "Unique order or transaction identifier"
     },
     "content_ids": {
+      "type": "array",
       "description": "Item identifiers for catalog attribution. Values are matched against catalog items using the identifier type declared by the catalog's content_id_type field (e.g., SKUs, GTINs, or vertical-specific IDs like job_id).",
       "items": {
         "type": "string"
-      },
-      "type": "array"
+      }
+    },
+    "content_type": {
+      "type": "string",
+      "description": "Category of content associated with the event (e.g., 'product', 'job', 'hotel'). Corresponds to the catalog type when used for catalog attribution."
     },
     "content_name": {
-      "description": "Name of the product or content",
-      "type": "string"
+      "type": "string",
+      "description": "Name of the product or content"
     },
-    "content_type": {
-      "description": "Category of content associated with the event (e.g., 'product', 'job', 'hotel'). Corresponds to the catalog type when used for catalog attribution.",
-      "type": "string"
+    "content_category": {
+      "type": "string",
+      "description": "Category of the product or content"
+    },
+    "num_items": {
+      "type": "integer",
+      "description": "Number of items in the event",
+      "minimum": 0
+    },
+    "search_string": {
+      "type": "string",
+      "description": "Search query for search events"
     },
     "contents": {
+      "type": "array",
       "description": "Per-item details for e-commerce events",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "brand": {
-            "description": "Brand name of this item",
-            "type": "string"
-          },
           "id": {
-            "description": "Product or content identifier",
-            "type": "string"
+            "type": "string",
+            "description": "Product or content identifier"
+          },
+          "quantity": {
+            "type": "integer",
+            "description": "Quantity of this item",
+            "minimum": 1
           },
           "price": {
+            "type": "number",
             "description": "Price per unit of this item",
-            "minimum": 0,
-            "type": "number"
+            "minimum": 0
           },
-          "quantity": {
-            "description": "Quantity of this item",
-            "minimum": 1,
-            "type": "integer"
+          "brand": {
+            "type": "string",
+            "description": "Brand name of this item"
           }
         },
         "required": [
           "id"
         ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "currency": {
-      "description": "ISO 4217 currency code",
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
+        "additionalProperties": true
+      }
     },
     "ext": {
       "$ref": "ext.json"
-    },
-    "num_items": {
-      "description": "Number of items in the event",
-      "minimum": 0,
-      "type": "integer"
-    },
-    "order_id": {
-      "description": "Unique order or transaction identifier",
-      "type": "string"
-    },
-    "search_string": {
-      "description": "Search query for search events",
-      "type": "string"
-    },
-    "value": {
-      "description": "Monetary value of the event (should be accompanied by currency)",
-      "minimum": 0,
-      "type": "number"
     }
   },
-  "title": "Event Custom Data",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/event-source-health.json b/schemas/cache/core/event-source-health.json
index fd392b420..a79348fbd 100644
--- a/schemas/cache/core/event-source-health.json
+++ b/schemas/cache/core/event-source-health.json
@@ -1,69 +1,69 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Event Source Health",
   "description": "Health assessment for a configured event source. Sellers evaluate the quality, completeness, and volume of events received from this source. Sellers with native quality scores (Snap EQS, Meta EMQ) relay them in detail; sellers without native scores derive status from operational metrics (volume, error rates, tag activity).",
+  "type": "object",
   "properties": {
+    "status": {
+      "$ref": "../enums/assessment-status.json",
+      "description": "Overall health status. Use this for cross-seller decisions \u2014 do not rely on detail.score for comparability."
+    },
     "detail": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Seller-specific scoring detail. Only present when the seller has a native quality score to relay. Buyer agents should use status (not detail) for cross-seller decisions. Detail is supplementary context for human review or advanced diagnostics.",
       "properties": {
-        "label": {
-          "description": "Seller's name for this score (e.g., 'Event Quality Score', 'Event Match Quality').",
-          "type": "string"
+        "score": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Seller-defined quality score. Scale varies by seller \u2014 only compare within the same seller."
         },
         "max_score": {
-          "description": "Maximum possible score on this seller's scale.",
+          "type": "number",
           "minimum": 1,
-          "type": "number"
+          "description": "Maximum possible score on this seller's scale."
         },
-        "score": {
-          "description": "Seller-defined quality score. Scale varies by seller \u2014 only compare within the same seller.",
-          "minimum": 0,
-          "type": "number"
+        "label": {
+          "type": "string",
+          "description": "Seller's name for this score (e.g., 'Event Quality Score', 'Event Match Quality')."
         }
       },
       "required": [
         "score",
         "max_score"
       ],
-      "type": "object"
+      "additionalProperties": true
+    },
+    "match_rate": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 1,
+      "description": "Fraction of events from this source that the seller successfully matched to ad interactions (0.0-1.0). Low match rates indicate weak user_match identifiers. Absent when the seller does not compute match rates."
+    },
+    "last_event_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp of the most recent event received from this source. Absent when no events have been received."
     },
     "evaluated_at": {
-      "description": "ISO 8601 timestamp of when this health assessment was computed. When health is derived from reporting data, this may lag real-time. Buyer agents can use this to decide whether to trust stale assessments or re-request.",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "ISO 8601 timestamp of when this health assessment was computed. When health is derived from reporting data, this may lag real-time. Buyer agents can use this to decide whether to trust stale assessments or re-request."
     },
     "events_received_24h": {
-      "description": "Number of events received from this source in the last 24 hours. Zero indicates the source is configured but not firing.",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Number of events received from this source in the last 24 hours. Zero indicates the source is configured but not firing."
     },
     "issues": {
+      "type": "array",
       "description": "Actionable issues detected with this event source. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.",
       "items": {
         "$ref": "diagnostic-issue.json"
-      },
-      "type": "array"
-    },
-    "last_event_at": {
-      "description": "ISO 8601 timestamp of the most recent event received from this source. Absent when no events have been received.",
-      "format": "date-time",
-      "type": "string"
-    },
-    "match_rate": {
-      "description": "Fraction of events from this source that the seller successfully matched to ad interactions (0.0-1.0). Low match rates indicate weak user_match identifiers. Absent when the seller does not compute match rates.",
-      "maximum": 1,
-      "minimum": 0,
-      "type": "number"
-    },
-    "status": {
-      "$ref": "../enums/assessment-status.json",
-      "description": "Overall health status. Use this for cross-seller decisions \u2014 do not rely on detail.score for comparability."
+      }
     }
   },
   "required": [
     "status"
   ],
-  "title": "Event Source Health",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/event.json b/schemas/cache/core/event.json
index 83125ee08..16b274989 100644
--- a/schemas/cache/core/event.json
+++ b/schemas/cache/core/event.json
@@ -1,46 +1,47 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Event",
   "description": "A marketing event (conversion, engagement, or custom) for attribution and optimization",
+  "type": "object",
   "properties": {
-    "action_source": {
-      "$ref": "../enums/action-source.json",
-      "description": "Where the event originated"
-    },
-    "custom_data": {
-      "$ref": "event-custom-data.json",
-      "description": "Event-specific data (value, currency, items, etc.)"
-    },
-    "custom_event_name": {
-      "description": "Name for custom events (used when event_type is 'custom')",
-      "type": "string"
-    },
     "event_id": {
+      "type": "string",
       "description": "Unique identifier for deduplication (scoped to event_type + event_source_id)",
-      "maxLength": 256,
       "minLength": 1,
-      "type": "string"
-    },
-    "event_source_url": {
-      "description": "URL where the event occurred (required when action_source is 'website')",
-      "format": "uri",
-      "type": "string"
-    },
-    "event_time": {
-      "description": "ISO 8601 timestamp when the event occurred",
-      "format": "date-time",
-      "type": "string"
+      "maxLength": 256
     },
     "event_type": {
       "$ref": "../enums/event-type.json",
       "description": "Standard event type"
     },
-    "ext": {
-      "$ref": "ext.json"
+    "event_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp when the event occurred"
     },
     "user_match": {
       "$ref": "user-match.json",
       "description": "User identifiers for attribution matching"
+    },
+    "custom_data": {
+      "$ref": "event-custom-data.json",
+      "description": "Event-specific data (value, currency, items, etc.)"
+    },
+    "action_source": {
+      "$ref": "../enums/action-source.json",
+      "description": "Where the event originated"
+    },
+    "event_source_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL where the event occurred (required when action_source is 'website')"
+    },
+    "custom_event_name": {
+      "type": "string",
+      "description": "Name for custom events (used when event_type is 'custom')"
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -48,6 +49,5 @@
     "event_type",
     "event_time"
   ],
-  "title": "Event",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/feature-requirement.json b/schemas/cache/core/feature-requirement.json
new file mode 100644
index 000000000..69ccb542d
--- /dev/null
+++ b/schemas/cache/core/feature-requirement.json
@@ -0,0 +1,43 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Feature Requirement",
+  "description": "A feature-based requirement \u2014 a reusable predicate over a feature value. Used by property list filters today; designed for reuse in other surfaces (audience filters, creative gates) in future versions. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
+  "type": "object",
+  "properties": {
+    "feature_id": {
+      "type": "string",
+      "description": "Feature to evaluate (discovered via get_adcp_capabilities)"
+    },
+    "min_value": {
+      "type": "number",
+      "description": "Minimum numeric value required (for quantitative features)"
+    },
+    "max_value": {
+      "type": "number",
+      "description": "Maximum numeric value allowed (for quantitative features)"
+    },
+    "allowed_values": {
+      "type": "array",
+      "description": "Values that pass the requirement (for binary/categorical features)",
+      "items": {},
+      "minItems": 1
+    },
+    "if_not_covered": {
+      "type": "string",
+      "enum": [
+        "exclude",
+        "include"
+      ],
+      "default": "exclude",
+      "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+    },
+    "policy_id": {
+      "type": "string",
+      "description": "Optional attribution \u2014 when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+    }
+  },
+  "required": [
+    "feature_id"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/core/flight-item.json b/schemas/cache/core/flight-item.json
index f3c7f8c15..3a9ea8fa7 100644
--- a/schemas/cache/core/flight-item.json
+++ b/schemas/cache/core/flight-item.json
@@ -1,151 +1,101 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Flight Item",
   "description": "A flight route within a flight-type catalog. Carries origin/destination, airline, pricing, and schedule data that platforms use for flight ads and dynamic travel remarketing. Maps to Google DynamicFlightsAsset, Meta flight catalogs, and similar formats.",
-  "examples": [
-    {
-      "data": {
-        "airline": "KLM",
-        "description": "Direct flights from Amsterdam to New York, daily departures.",
-        "destination": {
-          "airport_code": "JFK",
-          "city": "New York"
-        },
-        "flight_id": "ams-jfk-summer",
-        "image_url": "https://images.acmeair.com/routes/ams-jfk.jpg",
-        "origin": {
-          "airport_code": "AMS",
-          "city": "Amsterdam"
-        },
-        "price": {
-          "amount": 449,
-          "currency": "EUR"
-        },
-        "tags": [
-          "direct",
-          "transatlantic"
-        ],
-        "url": "https://acmeair.com/flights/ams-jfk"
-      },
-      "description": "Direct transatlantic route"
-    },
-    {
-      "data": {
-        "destination": {
-          "airport_code": "LIS",
-          "city": "Lisbon"
-        },
-        "flight_id": "bcn-lis-q4",
-        "origin": {
-          "airport_code": "BCN",
-          "city": "Barcelona"
-        },
-        "price": {
-          "amount": 39,
-          "currency": "EUR"
-        },
-        "tags": [
-          "budget",
-          "short-haul"
-        ],
-        "url": "https://acmeair.com/flights/bcn-lis"
-      },
-      "description": "Budget European route"
-    }
-  ],
+  "type": "object",
   "properties": {
-    "airline": {
-      "description": "Airline name or IATA airline code.",
-      "type": "string"
-    },
-    "arrival_time": {
-      "description": "Arrival date and time (ISO 8601).",
-      "format": "date-time",
-      "type": "string"
-    },
-    "assets": {
-      "description": "Typed creative asset pools for this flight. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-      "items": {
-        "$ref": "offering-asset-group.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "departure_time": {
-      "description": "Departure date and time (ISO 8601).",
-      "format": "date-time",
-      "type": "string"
-    },
-    "description": {
-      "description": "Route description or promotional text.",
-      "type": "string"
+    "flight_id": {
+      "type": "string",
+      "description": "Unique identifier for this flight route or offer."
     },
-    "destination": {
-      "additionalProperties": false,
-      "description": "Arrival airport or city.",
+    "origin": {
+      "type": "object",
+      "description": "Departure airport or city.",
       "properties": {
         "airport_code": {
-          "description": "IATA airport code.",
+          "type": "string",
           "pattern": "^[A-Z]{3}$",
-          "type": "string"
+          "description": "IATA airport code (e.g., 'AMS', 'JFK', 'LHR')."
         },
         "city": {
-          "description": "City name.",
-          "type": "string"
+          "type": "string",
+          "description": "City name (e.g., 'Amsterdam', 'New York')."
         }
       },
       "required": [
         "airport_code"
       ],
-      "type": "object"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "flight_id": {
-      "description": "Unique identifier for this flight route or offer.",
-      "type": "string"
-    },
-    "image_url": {
-      "description": "Promotional image URL (typically a destination photo).",
-      "format": "uri",
-      "type": "string"
+      "additionalProperties": false
     },
-    "origin": {
-      "additionalProperties": false,
-      "description": "Departure airport or city.",
+    "destination": {
+      "type": "object",
+      "description": "Arrival airport or city.",
       "properties": {
         "airport_code": {
-          "description": "IATA airport code (e.g., 'AMS', 'JFK', 'LHR').",
+          "type": "string",
           "pattern": "^[A-Z]{3}$",
-          "type": "string"
+          "description": "IATA airport code."
         },
         "city": {
-          "description": "City name (e.g., 'Amsterdam', 'New York').",
-          "type": "string"
+          "type": "string",
+          "description": "City name."
         }
       },
       "required": [
         "airport_code"
       ],
-      "type": "object"
+      "additionalProperties": false
+    },
+    "airline": {
+      "type": "string",
+      "description": "Airline name or IATA airline code."
     },
     "price": {
       "$ref": "price.json",
       "description": "Ticket price or starting fare."
     },
+    "description": {
+      "type": "string",
+      "description": "Route description or promotional text."
+    },
+    "departure_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Departure date and time (ISO 8601)."
+    },
+    "arrival_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Arrival date and time (ISO 8601)."
+    },
+    "image_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Promotional image URL (typically a destination photo)."
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Booking page URL for this route."
+    },
     "tags": {
+      "type": "array",
       "description": "Tags for filtering (e.g., 'direct', 'red-eye', 'business-class').",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "url": {
-      "description": "Booking page URL for this route.",
-      "format": "uri",
-      "type": "string"
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this flight. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -153,6 +103,56 @@
     "origin",
     "destination"
   ],
-  "title": "Flight Item",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Direct transatlantic route",
+      "data": {
+        "flight_id": "ams-jfk-summer",
+        "origin": {
+          "airport_code": "AMS",
+          "city": "Amsterdam"
+        },
+        "destination": {
+          "airport_code": "JFK",
+          "city": "New York"
+        },
+        "airline": "KLM",
+        "price": {
+          "amount": 449,
+          "currency": "EUR"
+        },
+        "description": "Direct flights from Amsterdam to New York, daily departures.",
+        "image_url": "https://images.acmeair.com/routes/ams-jfk.jpg",
+        "url": "https://acmeair.com/flights/ams-jfk",
+        "tags": [
+          "direct",
+          "transatlantic"
+        ]
+      }
+    },
+    {
+      "description": "Budget European route",
+      "data": {
+        "flight_id": "bcn-lis-q4",
+        "origin": {
+          "airport_code": "BCN",
+          "city": "Barcelona"
+        },
+        "destination": {
+          "airport_code": "LIS",
+          "city": "Lisbon"
+        },
+        "price": {
+          "amount": 39,
+          "currency": "EUR"
+        },
+        "url": "https://acmeair.com/flights/bcn-lis",
+        "tags": [
+          "budget",
+          "short-haul"
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/forecast-point.json b/schemas/cache/core/forecast-point.json
index 3a1a92eec..64d06f252 100644
--- a/schemas/cache/core/forecast-point.json
+++ b/schemas/cache/core/forecast-point.json
@@ -1,65 +1,84 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Forecast Point",
   "description": "A forecast data point. When budget is present, the point pairs a spend level with expected delivery \u2014 multiple points at ascending budgets form a curve. When budget is omitted, the point represents total available inventory for the requested targeting and dates, independent of spend.",
+  "type": "object",
   "properties": {
+    "label": {
+      "type": "string",
+      "maxLength": 128,
+      "description": "Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+      "examples": [
+        "Primetime",
+        "Morning Drive",
+        "Large Format Transit"
+      ]
+    },
     "budget": {
+      "type": "number",
       "description": "Budget amount for this forecast point. Required for spend curves; omit for availability forecasts where the metrics represent total available inventory. For allocation-level forecasts, this is the absolute budget for that allocation (not the percentage). For proposal-level forecasts, this is the total proposal budget. When omitted, use metrics.spend to express the estimated cost of the available inventory.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "metrics": {
-      "additionalProperties": {
-        "$ref": "forecast-range.json"
-      },
+      "type": "object",
       "description": "Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { \"mid\": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory \u2014 use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).",
       "properties": {
         "audience_size": {
           "$ref": "forecast-range.json"
         },
-        "clicks": {
+        "reach": {
           "$ref": "forecast-range.json"
         },
-        "completed_views": {
+        "frequency": {
           "$ref": "forecast-range.json"
         },
-        "engagements": {
+        "impressions": {
           "$ref": "forecast-range.json"
         },
-        "follows": {
+        "clicks": {
           "$ref": "forecast-range.json"
         },
-        "frequency": {
+        "spend": {
           "$ref": "forecast-range.json"
         },
-        "grps": {
+        "views": {
           "$ref": "forecast-range.json"
         },
-        "impressions": {
+        "completed_views": {
           "$ref": "forecast-range.json"
         },
-        "profile_visits": {
+        "grps": {
           "$ref": "forecast-range.json"
         },
-        "reach": {
+        "engagements": {
+          "$ref": "forecast-range.json"
+        },
+        "follows": {
           "$ref": "forecast-range.json"
         },
         "saves": {
           "$ref": "forecast-range.json"
         },
-        "spend": {
+        "profile_visits": {
           "$ref": "forecast-range.json"
         },
-        "views": {
+        "measured_impressions": {
+          "$ref": "forecast-range.json"
+        },
+        "downloads": {
+          "$ref": "forecast-range.json"
+        },
+        "plays": {
           "$ref": "forecast-range.json"
         }
       },
-      "type": "object"
+      "additionalProperties": {
+        "$ref": "forecast-range.json"
+      }
     }
   },
   "required": [
     "metrics"
   ],
-  "title": "Forecast Point",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/forecast-range.json b/schemas/cache/core/forecast-range.json
index f6a8adb02..f7b6c910d 100644
--- a/schemas/cache/core/forecast-range.json
+++ b/schemas/cache/core/forecast-range.json
@@ -1,27 +1,37 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "A forecast value with optional low/high bounds. The mid value represents the most likely outcome. When low and high are provided, they represent conservative and optimistic estimates respectively.",
+  "title": "Forecast Range",
+  "description": "A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.",
+  "type": "object",
   "properties": {
-    "high": {
-      "description": "Optimistic (high-end) forecast value",
-      "minimum": 0,
-      "type": "number"
-    },
     "low": {
+      "type": "number",
       "description": "Conservative (low-end) forecast value",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "mid": {
+      "type": "number",
       "description": "Expected (most likely) forecast value",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
+    },
+    "high": {
+      "type": "number",
+      "description": "Optimistic (high-end) forecast value",
+      "minimum": 0
     }
   },
-  "required": [
-    "mid"
+  "anyOf": [
+    {
+      "required": [
+        "mid"
+      ]
+    },
+    {
+      "required": [
+        "low",
+        "high"
+      ]
+    }
   ],
-  "title": "Forecast Range",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/format-id.json b/schemas/cache/core/format-id.json
index a2153f0be..a1ade60a6 100644
--- a/schemas/cache/core/format-id.json
+++ b/schemas/cache/core/format-id.json
@@ -1,46 +1,46 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "dependencies": {
-    "height": [
-      "width"
-    ],
-    "width": [
-      "height"
-    ]
-  },
+  "title": "Format ID",
   "description": "Structured format identifier with agent URL and format name. Can reference: (1) a concrete format with fixed dimensions (id only), (2) a template format without parameters (id only), or (3) a template format with parameters (id + dimensions/duration). Template formats accept parameters in format_id while concrete formats have fixed dimensions in their definition. Parameterized format IDs create unique, specific format variants.",
+  "type": "object",
   "properties": {
     "agent_url": {
-      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
     },
-    "duration_ms": {
-      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.",
+    "id": {
+      "type": "string",
+      "pattern": "^[a-zA-Z0-9_-]+$",
+      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant."
+    },
+    "width": {
+      "type": "integer",
       "minimum": 1,
-      "type": "number"
+      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
     },
     "height": {
-      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants."
     },
-    "id": {
-      "description": "Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
-      "pattern": "^[a-zA-Z0-9_-]+$",
-      "type": "string"
-    },
-    "width": {
-      "description": "Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.",
+    "duration_ms": {
+      "type": "number",
       "minimum": 1,
-      "type": "integer"
+      "description": "Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters."
     }
   },
   "required": [
     "agent_url",
     "id"
   ],
-  "title": "Format ID",
-  "type": "object"
+  "additionalProperties": true,
+  "dependencies": {
+    "width": [
+      "height"
+    ],
+    "height": [
+      "width"
+    ]
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/core/format.json b/schemas/cache/core/format.json
index a9168cdea..c0d6a73b7 100644
--- a/schemas/cache/core/format.json
+++ b/schemas/cache/core/format.json
@@ -1,362 +1,473 @@
 {
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Format",
+  "description": "Represents a creative format with its requirements",
+  "type": "object",
   "$defs": {
-    "baseGroupAsset": {
+    "baseIndividualAsset": {
+      "type": "object",
       "properties": {
+        "item_type": {
+          "type": "string",
+          "const": "individual",
+          "description": "Discriminator indicating this is an individual asset"
+        },
         "asset_id": {
-          "description": "Identifier for this asset within the group",
-          "type": "string"
+          "type": "string",
+          "description": "Unique identifier for this asset. Creative manifests MUST use this exact value as the key in the assets object."
         },
         "asset_role": {
-          "description": "Descriptive label for this asset's purpose. For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role.",
-          "type": "string"
+          "type": "string",
+          "description": "Descriptive label for this asset's purpose (e.g., 'hero_image', 'logo', 'third_party_tracking'). For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role."
+        },
+        "required": {
+          "type": "boolean",
+          "description": "Whether this asset is required (true) or optional (false). Required assets must be provided for a valid creative. Optional assets enhance the creative but are not mandatory."
         },
         "overlays": {
-          "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., carousel navigation arrows, slide indicators). Creative agents should avoid placing critical content within overlay bounds.",
+          "type": "array",
+          "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., video player controls, publisher logos). Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
           "items": {
             "$ref": "overlay.json"
-          },
-          "type": "array"
-        },
-        "required": {
-          "default": false,
-          "description": "Whether this asset is required within each repetition of the group",
-          "type": "boolean"
+          }
         }
       },
       "required": [
+        "item_type",
         "asset_id",
         "asset_type",
         "required"
-      ],
-      "type": "object"
+      ]
     },
-    "baseIndividualAsset": {
+    "baseGroupAsset": {
+      "type": "object",
       "properties": {
         "asset_id": {
-          "description": "Unique identifier for this asset. Creative manifests MUST use this exact value as the key in the assets object.",
-          "type": "string"
+          "type": "string",
+          "description": "Identifier for this asset within the group"
         },
         "asset_role": {
-          "description": "Descriptive label for this asset's purpose (e.g., 'hero_image', 'logo', 'third_party_tracking'). For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role.",
-          "type": "string"
+          "type": "string",
+          "description": "Descriptive label for this asset's purpose. For documentation and UI display only \u2014 manifests key assets by asset_id, not asset_role."
         },
-        "item_type": {
-          "const": "individual",
-          "description": "Discriminator indicating this is an individual asset",
-          "type": "string"
+        "required": {
+          "type": "boolean",
+          "description": "Whether this asset is required within each repetition of the group",
+          "default": false
         },
         "overlays": {
-          "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., video player controls, publisher logos). Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+          "type": "array",
+          "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., carousel navigation arrows, slide indicators). Creative agents should avoid placing critical content within overlay bounds.",
           "items": {
             "$ref": "overlay.json"
-          },
-          "type": "array"
-        },
-        "required": {
-          "description": "Whether this asset is required (true) or optional (false). Required assets must be provided for a valid creative. Optional assets enhance the creative but are not mandatory.",
-          "type": "boolean"
+          }
         }
       },
       "required": [
-        "item_type",
         "asset_id",
         "asset_type",
         "required"
-      ],
-      "type": "object"
+      ]
     }
   },
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "Represents a creative format with its requirements",
   "properties": {
+    "format_id": {
+      "$ref": "format-id.json",
+      "description": "Structured format identifier with agent URL and format name"
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable format name"
+    },
+    "description": {
+      "type": "string",
+      "description": "Plain text explanation of what this format does and what assets it requires"
+    },
+    "example_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Optional URL to showcase page with examples and interactive demos of this format"
+    },
     "accepts_parameters": {
+      "type": "array",
       "description": "List of parameters this format accepts in format_id. Template formats define which parameters (dimensions, duration, etc.) can be specified when instantiating the format. Empty or omitted means this is a concrete format with fixed parameters.",
       "items": {
         "$ref": "../enums/format-id-parameter.json"
       },
-      "type": "array",
       "uniqueItems": true
     },
-    "accessibility": {
-      "description": "Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.",
-      "properties": {
-        "requires_accessible_assets": {
-          "description": "When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties.",
-          "type": "boolean"
+    "renders": {
+      "type": "array",
+      "description": "Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "role": {
+            "type": "string",
+            "description": "Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+          },
+          "parameters_from_format_id": {
+            "type": "boolean",
+            "description": "When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly."
+          },
+          "dimensions": {
+            "type": "object",
+            "description": "Dimensions for this rendered piece. Defaults to pixels when unit is absent.",
+            "properties": {
+              "width": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Fixed width. Interpretation depends on unit (default: pixels)."
+              },
+              "height": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Fixed height. Interpretation depends on unit (default: pixels)."
+              },
+              "min_width": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Minimum width for responsive renders"
+              },
+              "min_height": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Minimum height for responsive renders"
+              },
+              "max_width": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Maximum width for responsive renders"
+              },
+              "max_height": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Maximum height for responsive renders"
+              },
+              "unit": {
+                "$ref": "../enums/dimension-unit.json",
+                "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
+              },
+              "responsive": {
+                "type": "object",
+                "description": "Indicates which dimensions are responsive/fluid",
+                "properties": {
+                  "width": {
+                    "type": "boolean"
+                  },
+                  "height": {
+                    "type": "boolean"
+                  }
+                },
+                "required": [
+                  "width",
+                  "height"
+                ]
+              },
+              "aspect_ratio": {
+                "type": "string",
+                "description": "Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
+                "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$"
+              }
+            }
+          }
         },
-        "wcag_level": {
-          "$ref": "../enums/wcag-level.json",
-          "description": "WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level."
-        }
+        "required": [
+          "role"
+        ],
+        "oneOf": [
+          {
+            "required": [
+              "dimensions"
+            ],
+            "not": {
+              "required": [
+                "parameters_from_format_id"
+              ]
+            }
+          },
+          {
+            "required": [
+              "parameters_from_format_id"
+            ],
+            "properties": {
+              "parameters_from_format_id": {
+                "const": true
+              }
+            },
+            "not": {
+              "required": [
+                "dimensions"
+              ]
+            }
+          }
+        ]
       },
-      "required": [
-        "wcag_level"
-      ],
-      "type": "object"
+      "minItems": 1
     },
     "assets": {
+      "type": "array",
       "description": "Array of all assets supported for this format. Each asset is identified by its asset_id, which must be used as the key in creative manifests. Use the 'required' boolean on each asset to indicate whether it's mandatory.",
       "items": {
         "oneOf": [
           {
+            "description": "Image asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Image asset",
             "properties": {
-              "asset_type": {
-                "const": "image"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "image"
+              },
               "requirements": {
                 "$ref": "requirements/image-asset-requirements.json"
               }
             }
           },
           {
+            "description": "Video asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Video asset",
             "properties": {
-              "asset_type": {
-                "const": "video"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "video"
+              },
               "requirements": {
                 "$ref": "requirements/video-asset-requirements.json"
               }
             }
           },
           {
+            "description": "Audio asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Audio asset",
             "properties": {
-              "asset_type": {
-                "const": "audio"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "audio"
+              },
               "requirements": {
                 "$ref": "requirements/audio-asset-requirements.json"
               }
             }
           },
           {
+            "description": "Text asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Text asset",
             "properties": {
-              "asset_type": {
-                "const": "text"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "text"
+              },
               "requirements": {
                 "$ref": "requirements/text-asset-requirements.json"
               }
             }
           },
           {
+            "description": "Markdown asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Markdown asset",
             "properties": {
-              "asset_type": {
-                "const": "markdown"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "markdown"
+              },
               "requirements": {
                 "$ref": "requirements/markdown-asset-requirements.json"
               }
             }
           },
           {
+            "description": "HTML asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "HTML asset",
             "properties": {
-              "asset_type": {
-                "const": "html"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "html"
+              },
               "requirements": {
                 "$ref": "requirements/html-asset-requirements.json"
               }
             }
           },
           {
+            "description": "CSS asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "CSS asset",
             "properties": {
-              "asset_type": {
-                "const": "css"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "css"
+              },
               "requirements": {
                 "$ref": "requirements/css-asset-requirements.json"
               }
             }
           },
           {
+            "description": "JavaScript asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "JavaScript asset",
             "properties": {
-              "asset_type": {
-                "const": "javascript"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "javascript"
+              },
               "requirements": {
                 "$ref": "requirements/javascript-asset-requirements.json"
               }
             }
           },
           {
+            "description": "VAST asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "VAST asset",
             "properties": {
-              "asset_type": {
-                "const": "vast"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "vast"
+              },
               "requirements": {
                 "$ref": "requirements/vast-asset-requirements.json"
               }
             }
           },
           {
+            "description": "DAAST asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "DAAST asset",
             "properties": {
-              "asset_type": {
-                "const": "daast"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "daast"
+              },
               "requirements": {
                 "$ref": "requirements/daast-asset-requirements.json"
               }
             }
           },
           {
+            "description": "URL asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "URL asset",
             "properties": {
-              "asset_type": {
-                "const": "url"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "url"
+              },
               "requirements": {
                 "$ref": "requirements/url-asset-requirements.json"
               }
             }
           },
           {
+            "description": "Webhook asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Webhook asset",
             "properties": {
-              "asset_type": {
-                "const": "webhook"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "webhook"
+              },
               "requirements": {
                 "$ref": "requirements/webhook-asset-requirements.json"
               }
             }
           },
           {
+            "description": "Brief asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Brief asset",
             "properties": {
-              "asset_type": {
-                "const": "brief"
-              },
               "item_type": {
                 "const": "individual"
+              },
+              "asset_type": {
+                "const": "brief"
               }
             }
           },
           {
+            "description": "Catalog asset",
             "allOf": [
               {
                 "$ref": "#/$defs/baseIndividualAsset"
               }
             ],
-            "description": "Catalog asset",
             "properties": {
-              "asset_type": {
-                "const": "catalog"
-              },
               "item_type": {
                 "const": "individual"
               },
+              "asset_type": {
+                "const": "catalog"
+              },
               "requirements": {
                 "$ref": "requirements/catalog-requirements.json"
               }
@@ -364,22 +475,52 @@
           },
           {
             "description": "Repeatable asset group (for carousels, slideshows, playlists, etc.)",
+            "type": "object",
             "properties": {
-              "asset_group_id": {
-                "description": "Identifier for this asset group (e.g., 'product', 'slide', 'card')",
-                "type": "string"
+              "item_type": {
+                "type": "string",
+                "const": "repeatable_group",
+                "description": "Discriminator indicating this is a repeatable asset group"
+              },
+              "asset_group_id": {
+                "type": "string",
+                "description": "Identifier for this asset group (e.g., 'product', 'slide', 'card')"
+              },
+              "required": {
+                "type": "boolean",
+                "description": "Whether this asset group is required. If true, at least min_count repetitions must be provided."
+              },
+              "min_count": {
+                "type": "integer",
+                "description": "Minimum number of repetitions required (if group is required) or allowed (if optional)",
+                "minimum": 0
+              },
+              "max_count": {
+                "type": "integer",
+                "description": "Maximum number of repetitions allowed",
+                "minimum": 1
+              },
+              "selection_mode": {
+                "type": "string",
+                "description": "How the platform uses repetitions of this group. 'sequential' means all items display in order (carousels, playlists). 'optimize' means the platform selects the best-performing combination from alternatives (asset group optimization like Meta Advantage+ or Google Pmax).",
+                "enum": [
+                  "sequential",
+                  "optimize"
+                ],
+                "default": "sequential"
               },
               "assets": {
+                "type": "array",
                 "description": "Assets within each repetition of this group",
                 "items": {
                   "oneOf": [
                     {
+                      "description": "Image asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "Image asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "image"
@@ -390,12 +531,12 @@
                       }
                     },
                     {
+                      "description": "Video asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "Video asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "video"
@@ -406,12 +547,12 @@
                       }
                     },
                     {
+                      "description": "Audio asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "Audio asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "audio"
@@ -422,12 +563,12 @@
                       }
                     },
                     {
+                      "description": "Text asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "Text asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "text"
@@ -438,12 +579,12 @@
                       }
                     },
                     {
+                      "description": "Markdown asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "Markdown asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "markdown"
@@ -454,12 +595,12 @@
                       }
                     },
                     {
+                      "description": "HTML asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "HTML asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "html"
@@ -470,12 +611,12 @@
                       }
                     },
                     {
+                      "description": "CSS asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "CSS asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "css"
@@ -486,12 +627,12 @@
                       }
                     },
                     {
+                      "description": "JavaScript asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "JavaScript asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "javascript"
@@ -502,12 +643,12 @@
                       }
                     },
                     {
+                      "description": "VAST asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "VAST asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "vast"
@@ -518,12 +659,12 @@
                       }
                     },
                     {
+                      "description": "DAAST asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "DAAST asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "daast"
@@ -534,12 +675,12 @@
                       }
                     },
                     {
+                      "description": "URL asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "URL asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "url"
@@ -550,12 +691,12 @@
                       }
                     },
                     {
+                      "description": "Webhook asset in group",
                       "allOf": [
                         {
                           "$ref": "#/$defs/baseGroupAsset"
                         }
                       ],
-                      "description": "Webhook asset in group",
                       "properties": {
                         "asset_type": {
                           "const": "webhook"
@@ -566,36 +707,7 @@
                       }
                     }
                   ]
-                },
-                "type": "array"
-              },
-              "item_type": {
-                "const": "repeatable_group",
-                "description": "Discriminator indicating this is a repeatable asset group",
-                "type": "string"
-              },
-              "max_count": {
-                "description": "Maximum number of repetitions allowed",
-                "minimum": 1,
-                "type": "integer"
-              },
-              "min_count": {
-                "description": "Minimum number of repetitions required (if group is required) or allowed (if optional)",
-                "minimum": 0,
-                "type": "integer"
-              },
-              "required": {
-                "description": "Whether this asset group is required. If true, at least min_count repetitions must be provided.",
-                "type": "boolean"
-              },
-              "selection_mode": {
-                "default": "sequential",
-                "description": "How the platform uses repetitions of this group. 'sequential' means all items display in order (carousels, playlists). 'optimize' means the platform selects the best-performing combination from alternatives (asset group optimization like Meta Advantage+ or Google Pmax).",
-                "enum": [
-                  "sequential",
-                  "optimize"
-                ],
-                "type": "string"
+                }
               }
             },
             "required": [
@@ -605,57 +717,47 @@
               "min_count",
               "max_count",
               "assets"
-            ],
-            "type": "object"
+            ]
           }
         ]
-      },
-      "type": "array"
+      }
     },
     "delivery": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Delivery method specifications (e.g., hosted, VAST, third-party tags)",
-      "type": "object"
-    },
-    "description": {
-      "description": "Plain text explanation of what this format does and what assets it requires",
-      "type": "string"
+      "additionalProperties": true
     },
-    "disclosure_capabilities": {
-      "description": "Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.",
+    "supported_macros": {
+      "type": "array",
+      "description": "List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.",
       "items": {
-        "additionalProperties": true,
-        "properties": {
-          "persistence": {
-            "description": "Persistence modes this position supports",
-            "items": {
-              "$ref": "../enums/disclosure-persistence.json"
-            },
-            "minItems": 1,
-            "type": "array",
-            "uniqueItems": true
+        "oneOf": [
+          {
+            "$ref": "../enums/universal-macro.json"
           },
-          "position": {
-            "$ref": "../enums/disclosure-position.json",
-            "description": "The disclosure position"
+          {
+            "type": "string",
+            "description": "Custom or publisher-specific macro name"
           }
-        },
-        "required": [
-          "position",
-          "persistence"
-        ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
+        ]
+      }
     },
-    "example_url": {
-      "description": "Optional URL to showcase page with examples and interactive demos of this format",
-      "format": "uri",
-      "type": "string"
+    "input_format_ids": {
+      "type": "array",
+      "description": "Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.",
+      "items": {
+        "$ref": "format-id.json"
+      }
+    },
+    "output_format_ids": {
+      "type": "array",
+      "description": "Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).",
+      "items": {
+        "$ref": "format-id.json"
+      }
     },
     "format_card": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Optional standard visual card (300x400px) for displaying this format in user interfaces. Can be rendered via preview_creative or pre-generated.",
       "properties": {
         "format_id": {
@@ -663,206 +765,112 @@
           "description": "Creative format defining the card layout (typically format_card_standard)"
         },
         "manifest": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Asset manifest for rendering the card, structure defined by the format",
-          "type": "object"
+          "additionalProperties": true
         }
       },
       "required": [
         "format_id",
         "manifest"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "format_card_detailed": {
-      "additionalProperties": true,
-      "description": "Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.",
+    "accessibility": {
+      "type": "object",
+      "description": "Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.",
       "properties": {
-        "format_id": {
-          "$ref": "format-id.json",
-          "description": "Creative format defining the detailed card layout (typically format_card_detailed)"
+        "wcag_level": {
+          "$ref": "../enums/wcag-level.json",
+          "description": "WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level."
         },
-        "manifest": {
-          "additionalProperties": true,
-          "description": "Asset manifest for rendering the detailed card, structure defined by the format",
-          "type": "object"
+        "requires_accessible_assets": {
+          "type": "boolean",
+          "description": "When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties."
         }
       },
       "required": [
-        "format_id",
-        "manifest"
-      ],
-      "type": "object"
-    },
-    "format_id": {
-      "$ref": "format-id.json",
-      "description": "Structured format identifier with agent URL and format name"
-    },
-    "input_format_ids": {
-      "description": "Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.",
-      "items": {
-        "$ref": "format-id.json"
-      },
-      "type": "array"
-    },
-    "name": {
-      "description": "Human-readable format name",
-      "type": "string"
+        "wcag_level"
+      ]
     },
-    "output_format_ids": {
-      "description": "Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).",
+    "supported_disclosure_positions": {
+      "type": "array",
+      "description": "Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees \u2014 creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.",
       "items": {
-        "$ref": "format-id.json"
+        "$ref": "../enums/disclosure-position.json"
       },
-      "type": "array"
+      "minItems": 1,
+      "uniqueItems": true
     },
-    "renders": {
-      "description": "Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.",
+    "disclosure_capabilities": {
+      "type": "array",
+      "description": "Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.",
       "items": {
-        "oneOf": [
-          {
-            "not": {
-              "required": [
-                "parameters_from_format_id"
-              ]
-            },
-            "required": [
-              "dimensions"
-            ]
-          },
-          {
-            "not": {
-              "required": [
-                "dimensions"
-              ]
-            },
-            "properties": {
-              "parameters_from_format_id": {
-                "const": true
-              }
-            },
-            "required": [
-              "parameters_from_format_id"
-            ]
-          }
-        ],
+        "type": "object",
         "properties": {
-          "dimensions": {
-            "description": "Dimensions for this rendered piece. Defaults to pixels when unit is absent.",
-            "properties": {
-              "aspect_ratio": {
-                "description": "Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
-                "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
-                "type": "string"
-              },
-              "height": {
-                "description": "Fixed height. Interpretation depends on unit (default: pixels).",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              },
-              "max_height": {
-                "description": "Maximum height for responsive renders",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              },
-              "max_width": {
-                "description": "Maximum width for responsive renders",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              },
-              "min_height": {
-                "description": "Minimum height for responsive renders",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              },
-              "min_width": {
-                "description": "Minimum width for responsive renders",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              },
-              "responsive": {
-                "description": "Indicates which dimensions are responsive/fluid",
-                "properties": {
-                  "height": {
-                    "type": "boolean"
-                  },
-                  "width": {
-                    "type": "boolean"
-                  }
-                },
-                "required": [
-                  "width",
-                  "height"
-                ],
-                "type": "object"
-              },
-              "unit": {
-                "$ref": "../enums/dimension-unit.json",
-                "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
-              },
-              "width": {
-                "description": "Fixed width. Interpretation depends on unit (default: pixels).",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              }
-            },
-            "type": "object"
-          },
-          "parameters_from_format_id": {
-            "description": "When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly.",
-            "type": "boolean"
+          "position": {
+            "$ref": "../enums/disclosure-position.json",
+            "description": "The disclosure position"
           },
-          "role": {
-            "description": "Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')",
-            "type": "string"
+          "persistence": {
+            "type": "array",
+            "description": "Persistence modes this position supports",
+            "items": {
+              "$ref": "../enums/disclosure-persistence.json"
+            },
+            "minItems": 1,
+            "uniqueItems": true
           }
         },
         "required": [
-          "role"
+          "position",
+          "persistence"
         ],
-        "type": "object"
+        "additionalProperties": true
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "format_card_detailed": {
+      "type": "object",
+      "description": "Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.",
+      "properties": {
+        "format_id": {
+          "$ref": "format-id.json",
+          "description": "Creative format defining the detailed card layout (typically format_card_detailed)"
+        },
+        "manifest": {
+          "type": "object",
+          "description": "Asset manifest for rendering the detailed card, structure defined by the format",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "format_id",
+        "manifest"
+      ],
+      "additionalProperties": true
     },
     "reported_metrics": {
+      "type": "array",
       "description": "Metrics this format can produce in delivery reporting. Buyers receive the intersection of format reported_metrics and product available_metrics. If omitted, the format defers entirely to product-level metric declarations.",
       "items": {
         "$ref": "../enums/available-metric.json"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     },
-    "supported_disclosure_positions": {
-      "description": "Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees \u2014 creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.",
-      "items": {
-        "$ref": "../enums/disclosure-position.json"
-      },
-      "minItems": 1,
+    "pricing_options": {
       "type": "array",
-      "uniqueItems": true
-    },
-    "supported_macros": {
-      "description": "List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.",
+      "description": "Pricing options for this format. Used by transformation and generation agents that charge per format adapted, per image generated, or per unit of work. Present when the request included include_pricing=true and account. Ad servers and library-based agents expose pricing on list_creatives instead.",
       "items": {
-        "oneOf": [
-          {
-            "$ref": "../enums/universal-macro.json"
-          },
-          {
-            "description": "Custom or publisher-specific macro name",
-            "type": "string"
-          }
-        ]
+        "$ref": "vendor-pricing-option.json"
       },
-      "type": "array"
+      "minItems": 1
     }
   },
   "required": [
     "format_id",
     "name"
   ],
-  "title": "Format",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/frequency-cap.json b/schemas/cache/core/frequency-cap.json
index db86288c9..f17a487c9 100644
--- a/schemas/cache/core/frequency-cap.json
+++ b/schemas/cache/core/frequency-cap.json
@@ -1,6 +1,44 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Frequency Cap",
+  "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
+  "type": "object",
+  "properties": {
+    "suppress": {
+      "allOf": [
+        {
+          "$ref": "duration.json"
+        }
+      ],
+      "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
+    },
+    "suppress_minutes": {
+      "type": "number",
+      "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
+      "minimum": 0
+    },
+    "max_impressions": {
+      "type": "integer",
+      "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+      "minimum": 1
+    },
+    "per": {
+      "allOf": [
+        {
+          "$ref": "../enums/reach-unit.json"
+        }
+      ],
+      "description": "Entity granularity for impression counting. Required when max_impressions is set."
+    },
+    "window": {
+      "allOf": [
+        {
+          "$ref": "duration.json"
+        }
+      ],
+      "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
+    }
+  },
   "anyOf": [
     {
       "required": [
@@ -30,43 +68,5 @@
       "max_impressions"
     ]
   },
-  "description": "Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.",
-  "properties": {
-    "max_impressions": {
-      "description": "Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "per": {
-      "allOf": [
-        {
-          "$ref": "../enums/reach-unit.json"
-        }
-      ],
-      "description": "Entity granularity for impression counting. Required when max_impressions is set."
-    },
-    "suppress": {
-      "allOf": [
-        {
-          "$ref": "duration.json"
-        }
-      ],
-      "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
-    },
-    "suppress_minutes": {
-      "description": "Deprecated \u2014 use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).",
-      "minimum": 0,
-      "type": "number"
-    },
-    "window": {
-      "allOf": [
-        {
-          "$ref": "duration.json"
-        }
-      ],
-      "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
-    }
-  },
-  "title": "Frequency Cap",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/generation-credential.json b/schemas/cache/core/generation-credential.json
index b3af89506..c0674f06a 100644
--- a/schemas/cache/core/generation-credential.json
+++ b/schemas/cache/core/generation-credential.json
@@ -1,36 +1,37 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Generation Credential",
   "description": "A scoped credential issued by an LLM provider for generating rights-cleared content. The rights agent coordinates with the provider to issue the credential; the provider enforces usage constraints at generation time. Any creative agent can use the credential.",
+  "type": "object",
   "properties": {
-    "endpoint": {
-      "description": "Provider API endpoint to use with this credential, if different from the provider's default",
-      "format": "uri",
-      "type": "string"
-    },
-    "expires_at": {
-      "description": "When this credential expires. Key lifetime is determined by the provider.",
-      "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
     "provider": {
-      "description": "LLM or generation service provider identifier (e.g., 'midjourney', 'elevenlabs', 'stability')",
-      "type": "string"
+      "type": "string",
+      "description": "LLM or generation service provider identifier (e.g., 'midjourney', 'elevenlabs', 'stability')"
     },
     "rights_key": {
-      "description": "Scoped API key or token for generating rights-cleared content. The provider validates this key at generation time to verify the caller is authorized.",
-      "type": "string"
+      "type": "string",
+      "description": "Scoped API key or token for generating rights-cleared content. The provider validates this key at generation time to verify the caller is authorized."
     },
     "uses": {
+      "type": "array",
       "description": "Which rights uses this credential covers",
       "items": {
         "$ref": "../enums/right-use.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "expires_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this credential expires. Key lifetime is determined by the provider."
+    },
+    "endpoint": {
+      "type": "string",
+      "format": "uri",
+      "description": "Provider API endpoint to use with this credential, if different from the provider's default"
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -38,6 +39,5 @@
     "rights_key",
     "uses"
   ],
-  "title": "Generation Credential",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/geo-breakdown-support.json b/schemas/cache/core/geo-breakdown-support.json
index 378fd5a8a..d20edb173 100644
--- a/schemas/cache/core/geo-breakdown-support.json
+++ b/schemas/cache/core/geo-breakdown-support.json
@@ -1,37 +1,37 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Geographic Breakdown Support",
   "description": "Declares which geographic levels and classification systems are available for by_geo reporting breakdowns in product-level reporting_capabilities.",
+  "type": "object",
   "properties": {
     "country": {
-      "description": "Supports country-level geo breakdown (ISO 3166-1 alpha-2)",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Supports country-level geo breakdown (ISO 3166-1 alpha-2)"
+    },
+    "region": {
+      "type": "boolean",
+      "description": "Supports region/state-level geo breakdown (ISO 3166-2)"
     },
     "metro": {
-      "additionalProperties": {
-        "type": "boolean"
-      },
+      "type": "object",
       "description": "Metro area breakdown support. Keys are metro-system enum values; true means supported.",
       "propertyNames": {
         "$ref": "../enums/metro-system.json"
       },
-      "type": "object"
-    },
-    "postal_area": {
       "additionalProperties": {
         "type": "boolean"
-      },
+      }
+    },
+    "postal_area": {
+      "type": "object",
       "description": "Postal area breakdown support. Keys are postal-system enum values; true means supported.",
       "propertyNames": {
         "$ref": "../enums/postal-system.json"
       },
-      "type": "object"
-    },
-    "region": {
-      "description": "Supports region/state-level geo breakdown (ISO 3166-2)",
-      "type": "boolean"
+      "additionalProperties": {
+        "type": "boolean"
+      }
     }
   },
-  "title": "Geographic Breakdown Support",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/hotel-item.json b/schemas/cache/core/hotel-item.json
index 72f234092..bb8be9886 100644
--- a/schemas/cache/core/hotel-item.json
+++ b/schemas/cache/core/hotel-item.json
@@ -1,206 +1,142 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Hotel Item",
   "description": "A hotel or lodging property within a hotel-type catalog. Carries the property data that platforms use for hotel ads, dynamic remarketing, and travel campaign creatives. Maps to Google Hotel Center feeds, Meta hotel catalogs, and similar platform-native formats.",
-  "examples": [
-    {
-      "data": {
-        "address": {
-          "city": "Amsterdam",
-          "country": "NL",
-          "postal_code": "1015 BS",
-          "region": "NL-NH",
-          "street": "Herengracht 100"
-        },
-        "amenities": [
-          "spa",
-          "pool",
-          "restaurant",
-          "wifi",
-          "parking"
-        ],
-        "check_in_time": "15:00",
-        "check_out_time": "11:00",
-        "description": "Five-star canal-side hotel in the heart of Amsterdam with rooftop bar and spa.",
-        "hotel_id": "grand-amsterdam",
-        "image_url": "https://images.acmehotels.com/grand-amsterdam/hero.jpg",
-        "location": {
-          "lat": 52.3676,
-          "lng": 4.9041
-        },
-        "name": "Grand Hotel Amsterdam",
-        "price": {
-          "amount": 289,
-          "currency": "EUR",
-          "period": "night"
-        },
-        "star_rating": 5,
-        "tags": [
-          "luxury",
-          "city-center",
-          "business"
-        ],
-        "url": "https://acmehotels.com/amsterdam/grand"
-      },
-      "description": "Luxury city hotel"
-    },
-    {
-      "data": {
-        "hotel_id": "beach-hostel-bcn",
-        "location": {
-          "lat": 41.3784,
-          "lng": 2.1925
-        },
-        "name": "Barcelona Beach Hostel",
-        "price": {
-          "amount": 45,
-          "currency": "EUR",
-          "period": "night"
-        },
-        "star_rating": 2,
-        "tags": [
-          "budget",
-          "beach"
-        ],
-        "url": "https://acmehostels.com/barcelona/beach"
-      },
-      "description": "Budget seaside property"
-    }
-  ],
+  "type": "object",
   "properties": {
-    "address": {
-      "additionalProperties": false,
-      "description": "Structured address for display and geocoding.",
-      "properties": {
-        "city": {
-          "description": "City name.",
-          "type": "string"
-        },
-        "country": {
-          "description": "ISO 3166-1 alpha-2 country code.",
-          "pattern": "^[A-Z]{2}$",
-          "type": "string"
-        },
-        "postal_code": {
-          "description": "Postal or ZIP code.",
-          "type": "string"
-        },
-        "region": {
-          "description": "State, province, or region.",
-          "type": "string"
-        },
-        "street": {
-          "description": "Street address.",
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "amenities": {
-      "description": "Property amenities (e.g., 'pool', 'wifi', 'spa', 'parking', 'restaurant').",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "assets": {
-      "description": "Typed creative asset pools for this hotel. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (16:9 hero images), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1), 'logo'. Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-      "items": {
-        "$ref": "offering-asset-group.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "check_in_time": {
-      "description": "Standard check-in time in HH:MM format (e.g., '15:00').",
-      "pattern": "^[0-2][0-9]:[0-5][0-9]$",
-      "type": "string"
+    "hotel_id": {
+      "type": "string",
+      "description": "Unique identifier for this property. Used to match remarketing events and inventory feeds to the correct hotel."
     },
-    "check_out_time": {
-      "description": "Standard check-out time in HH:MM format (e.g., '11:00').",
-      "pattern": "^[0-2][0-9]:[0-5][0-9]$",
-      "type": "string"
+    "name": {
+      "type": "string",
+      "description": "Property name (e.g., 'Grand Hotel Amsterdam', 'Seaside Resort & Spa')."
     },
     "description": {
-      "description": "Property description highlighting features and location.",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "hotel_id": {
-      "description": "Unique identifier for this property. Used to match remarketing events and inventory feeds to the correct hotel.",
-      "type": "string"
-    },
-    "image_url": {
-      "description": "Primary property image URL.",
-      "format": "uri",
-      "type": "string"
+      "type": "string",
+      "description": "Property description highlighting features and location."
     },
     "location": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Geographic coordinates of the property.",
       "properties": {
         "lat": {
-          "description": "Latitude in decimal degrees (WGS 84).",
-          "maximum": 90,
+          "type": "number",
           "minimum": -90,
-          "type": "number"
+          "maximum": 90,
+          "description": "Latitude in decimal degrees (WGS 84)."
         },
         "lng": {
-          "description": "Longitude in decimal degrees (WGS 84).",
-          "maximum": 180,
+          "type": "number",
           "minimum": -180,
-          "type": "number"
+          "maximum": 180,
+          "description": "Longitude in decimal degrees (WGS 84)."
         }
       },
       "required": [
         "lat",
         "lng"
       ],
-      "type": "object"
+      "additionalProperties": false
     },
-    "name": {
-      "description": "Property name (e.g., 'Grand Hotel Amsterdam', 'Seaside Resort & Spa').",
-      "type": "string"
+    "address": {
+      "type": "object",
+      "description": "Structured address for display and geocoding.",
+      "properties": {
+        "street": {
+          "type": "string",
+          "description": "Street address."
+        },
+        "city": {
+          "type": "string",
+          "description": "City name."
+        },
+        "region": {
+          "type": "string",
+          "description": "State, province, or region."
+        },
+        "postal_code": {
+          "type": "string",
+          "description": "Postal or ZIP code."
+        },
+        "country": {
+          "type": "string",
+          "pattern": "^[A-Z]{2}$",
+          "description": "ISO 3166-1 alpha-2 country code."
+        }
+      },
+      "additionalProperties": false
     },
-    "phone": {
-      "description": "Property phone number in E.164 format.",
-      "type": "string"
+    "star_rating": {
+      "type": "integer",
+      "minimum": 1,
+      "maximum": 5,
+      "description": "Official star rating (1\u20135)."
     },
     "price": {
       "$ref": "price.json",
       "description": "Nightly rate or starting price. Use period 'night' for nightly rates."
     },
-    "star_rating": {
-      "description": "Official star rating (1\u20135).",
-      "maximum": 5,
-      "minimum": 1,
-      "type": "integer"
+    "image_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Primary property image URL."
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Property landing page or booking URL."
+    },
+    "phone": {
+      "type": "string",
+      "description": "Property phone number in E.164 format."
+    },
+    "amenities": {
+      "type": "array",
+      "description": "Property amenities (e.g., 'pool', 'wifi', 'spa', 'parking', 'restaurant').",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "check_in_time": {
+      "type": "string",
+      "pattern": "^[0-2][0-9]:[0-5][0-9]$",
+      "description": "Standard check-in time in HH:MM format (e.g., '15:00')."
+    },
+    "check_out_time": {
+      "type": "string",
+      "pattern": "^[0-2][0-9]:[0-5][0-9]$",
+      "description": "Standard check-out time in HH:MM format (e.g., '11:00')."
     },
     "tags": {
+      "type": "array",
       "description": "Tags for filtering and targeting (e.g., 'boutique', 'family', 'business', 'luxury').",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "url": {
-      "description": "Property landing page or booking URL.",
-      "format": "uri",
-      "type": "string"
+      "minItems": 1
     },
     "valid_from": {
-      "description": "Date from which this item is available or this rate applies (ISO 8601, e.g., '2025-03-01'). Used for seasonal availability windows in feed imports.",
+      "type": "string",
       "format": "date",
-      "type": "string"
+      "description": "Date from which this item is available or this rate applies (ISO 8601, e.g., '2025-03-01'). Used for seasonal availability windows in feed imports."
     },
     "valid_to": {
-      "description": "Date until which this item is available or this rate applies (ISO 8601, e.g., '2025-09-30'). Used for seasonal availability windows in feed imports.",
+      "type": "string",
       "format": "date",
-      "type": "string"
+      "description": "Date until which this item is available or this rate applies (ISO 8601, e.g., '2025-09-30'). Used for seasonal availability windows in feed imports."
+    },
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this hotel. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (16:9 hero images), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1), 'logo'. Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -208,6 +144,70 @@
     "name",
     "location"
   ],
-  "title": "Hotel Item",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Luxury city hotel",
+      "data": {
+        "hotel_id": "grand-amsterdam",
+        "name": "Grand Hotel Amsterdam",
+        "description": "Five-star canal-side hotel in the heart of Amsterdam with rooftop bar and spa.",
+        "location": {
+          "lat": 52.3676,
+          "lng": 4.9041
+        },
+        "address": {
+          "street": "Herengracht 100",
+          "city": "Amsterdam",
+          "region": "NL-NH",
+          "postal_code": "1015 BS",
+          "country": "NL"
+        },
+        "star_rating": 5,
+        "price": {
+          "amount": 289,
+          "currency": "EUR",
+          "period": "night"
+        },
+        "image_url": "https://images.acmehotels.com/grand-amsterdam/hero.jpg",
+        "url": "https://acmehotels.com/amsterdam/grand",
+        "amenities": [
+          "spa",
+          "pool",
+          "restaurant",
+          "wifi",
+          "parking"
+        ],
+        "check_in_time": "15:00",
+        "check_out_time": "11:00",
+        "tags": [
+          "luxury",
+          "city-center",
+          "business"
+        ]
+      }
+    },
+    {
+      "description": "Budget seaside property",
+      "data": {
+        "hotel_id": "beach-hostel-bcn",
+        "name": "Barcelona Beach Hostel",
+        "location": {
+          "lat": 41.3784,
+          "lng": 2.1925
+        },
+        "star_rating": 2,
+        "price": {
+          "amount": 45,
+          "currency": "EUR",
+          "period": "night"
+        },
+        "url": "https://acmehostels.com/barcelona/beach",
+        "tags": [
+          "budget",
+          "beach"
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/identifier.json b/schemas/cache/core/identifier.json
index d3e2af467..81e2eaff3 100644
--- a/schemas/cache/core/identifier.json
+++ b/schemas/cache/core/identifier.json
@@ -1,21 +1,21 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Identifier",
   "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
+  "type": "object",
   "properties": {
     "type": {
       "$ref": "../enums/identifier-types.json",
       "description": "Type of identifier"
     },
     "value": {
-      "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain",
-      "type": "string"
+      "type": "string",
+      "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
     }
   },
   "required": [
     "type",
     "value"
   ],
-  "title": "Identifier",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/industry-identifier.json b/schemas/cache/core/industry-identifier.json
new file mode 100644
index 000000000..b3299a970
--- /dev/null
+++ b/schemas/cache/core/industry-identifier.json
@@ -0,0 +1,21 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Industry Identifier",
+  "description": "An industry-standard identifier for an advertising creative (e.g., Ad-ID, ISCI, Clearcast clock number). These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+  "type": "object",
+  "properties": {
+    "type": {
+      "$ref": "../enums/creative-identifier-type.json"
+    },
+    "value": {
+      "type": "string",
+      "maxLength": 64,
+      "description": "The identifier value (e.g., 'ABCD1234000H' for Ad-ID)"
+    }
+  },
+  "required": [
+    "type",
+    "value"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/insertion-order.json b/schemas/cache/core/insertion-order.json
index cf6db9194..1ed29eb17 100644
--- a/schemas/cache/core/insertion-order.json
+++ b/schemas/cache/core/insertion-order.json
@@ -1,90 +1,90 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "A formal insertion order attached to a committed proposal. Contains structured terms for agent validation and optional signing URLs for human approval workflows.",
+  "title": "Insertion Order",
+  "description": "A signing wrapper attached to a committed proposal. The IO does not introduce new deal terms \u2014 all negotiated terms (performance standards, measurement terms, cancellation policy, pricing) live on the product and package. The IO exists for human signature workflows and provides summary fields so buyer agents can verify the IO matches the committed proposal before a human signs.",
+  "type": "object",
   "properties": {
     "io_id": {
+      "type": "string",
       "description": "Unique identifier for this insertion order. Referenced by io_acceptance on create_media_buy.",
-      "maxLength": 255,
-      "type": "string"
-    },
-    "requires_signature": {
-      "description": "Whether the buyer must accept this IO before creating a media buy. When true, create_media_buy requires an io_acceptance referencing this io_id.",
-      "type": "boolean"
-    },
-    "signing_url": {
-      "description": "URL to an electronic signing service (e.g., DocuSign) for human signature workflows. When present, a human must sign before the buyer agent can proceed with create_media_buy.",
-      "format": "uri",
-      "type": "string"
+      "maxLength": 255
     },
     "terms": {
-      "additionalProperties": true,
-      "description": "Structured terms for agent validation. Agents can programmatically verify these match the proposal and campaign requirements.",
+      "type": "object",
+      "description": "Summary fields echoed from the committed proposal for agent verification. Buyer agents use these to confirm the IO matches what was negotiated before a human signs. These are read-only summaries, not negotiation surfaces \u2014 deal terms live on products and packages.",
       "properties": {
         "advertiser": {
+          "type": "string",
           "description": "Advertiser name or identifier",
-          "maxLength": 500,
-          "type": "string"
-        },
-        "flight_end": {
-          "description": "Campaign end date",
-          "format": "date-time",
-          "type": "string"
-        },
-        "flight_start": {
-          "description": "Campaign start date",
-          "format": "date-time",
-          "type": "string"
-        },
-        "payment_terms": {
-          "description": "Payment terms",
-          "enum": [
-            "net_30",
-            "net_60",
-            "net_90",
-            "prepaid",
-            "due_on_receipt"
-          ],
-          "type": "string"
+          "maxLength": 500
         },
         "publisher": {
+          "type": "string",
           "description": "Publisher name or identifier",
-          "maxLength": 500,
-          "type": "string"
+          "maxLength": 500
         },
         "total_budget": {
+          "type": "object",
           "description": "Total committed budget",
           "properties": {
             "amount": {
-              "minimum": 0,
-              "type": "number"
+              "type": "number",
+              "minimum": 0
             },
             "currency": {
+              "type": "string",
               "description": "ISO 4217 currency code",
-              "maxLength": 3,
               "minLength": 3,
-              "type": "string"
+              "maxLength": 3
             }
           },
           "required": [
             "amount",
             "currency"
-          ],
-          "type": "object"
+          ]
+        },
+        "flight_start": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Campaign start date"
+        },
+        "flight_end": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Campaign end date"
+        },
+        "payment_terms": {
+          "type": "string",
+          "description": "Payment terms",
+          "enum": [
+            "net_30",
+            "net_60",
+            "net_90",
+            "prepaid",
+            "due_on_receipt"
+          ]
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
     "terms_url": {
-      "description": "URL to a human-readable document containing the full insertion order terms",
+      "type": "string",
+      "format": "uri",
+      "description": "URL to a human-readable document containing the full insertion order terms"
+    },
+    "signing_url": {
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL to an electronic signing service (e.g., DocuSign) for human signature workflows. When present, a human must sign before the buyer agent can proceed with create_media_buy."
+    },
+    "requires_signature": {
+      "type": "boolean",
+      "description": "Whether the buyer must accept this IO before creating a media buy. When true, create_media_buy requires an io_acceptance referencing this io_id."
     }
   },
   "required": [
     "io_id",
     "requires_signature"
   ],
-  "title": "Insertion Order",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/installment-deadlines.json b/schemas/cache/core/installment-deadlines.json
index 112e55ef4..6c71b3d22 100644
--- a/schemas/cache/core/installment-deadlines.json
+++ b/schemas/cache/core/installment-deadlines.json
@@ -1,28 +1,28 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Installment Deadlines",
   "description": "Deadlines associated with a bookable installment. Applies to any channel where inventory is tied to a scheduled unit: print issues, podcast episodes, linear TV airings, influencer posts, DOOH rotations.",
-  "minProperties": 1,
+  "type": "object",
   "properties": {
     "booking_deadline": {
-      "description": "Last date/time to book a placement in this installment (ISO 8601). After this point, the seller will not accept new bookings.",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Last date/time to book a placement in this installment (ISO 8601). After this point, the seller will not accept new bookings."
     },
     "cancellation_deadline": {
-      "description": "Last date/time to cancel without penalty (ISO 8601). Cancellations after this point may incur fees per the seller's terms.",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Last date/time to cancel without penalty (ISO 8601). Cancellations after this point may incur fees per the seller's terms."
     },
     "material_deadlines": {
+      "type": "array",
       "description": "Stages for creative material submission. Items MUST be in chronological order by due_at (earliest first). Typical pattern: 'draft' for raw materials the seller will process, 'final' for production-ready assets. Print example: draft artwork then press-ready PDF. Influencer example: talking points then approved script.",
       "items": {
         "$ref": "material-deadline.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     }
   },
-  "title": "Installment Deadlines",
-  "type": "object"
+  "minProperties": 1,
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/installment.json b/schemas/cache/core/installment.json
index b49bc6030..957f18db8 100644
--- a/schemas/cache/core/installment.json
+++ b/schemas/cache/core/installment.json
@@ -1,31 +1,89 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Installment",
   "description": "A single bookable unit within a collection \u2014 one episode, issue, event, or rotation period. The parent collection's kind indicates how to interpret each installment: TV/podcast episodes, print issues, live event airings, newsletter editions, or DOOH rotation periods. Installments inherit collection-level fields they don't override: content_rating defaults to the collection's baseline, guest_talent is additive to the collection's recurring talent, and topics add context beyond the collection's genre.",
+  "type": "object",
   "properties": {
-    "ad_inventory": {
-      "$ref": "ad-inventory-config.json",
-      "description": "Break-based ad inventory for this installment. For non-break formats (host reads, integrations), use product placements."
+    "installment_id": {
+      "type": "string",
+      "description": "Unique identifier for this installment within the collection"
     },
     "collection_id": {
-      "description": "Parent collection reference. Required when the product spans multiple collections. Maps to a collection_id declared in one of the publishers' adagents.json files referenced by the product's collection selectors.",
-      "type": "string"
+      "type": "string",
+      "description": "Parent collection reference. Required when the product spans multiple collections. Maps to a collection_id declared in one of the publishers' adagents.json files referenced by the product's collection selectors."
+    },
+    "name": {
+      "type": "string",
+      "description": "Installment title"
+    },
+    "season": {
+      "type": "string",
+      "description": "Season identifier (e.g., '1', '2024', 'spring_2026')"
+    },
+    "installment_number": {
+      "type": "string",
+      "description": "Installment number within the season (e.g., '3', '47')"
+    },
+    "scheduled_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the installment airs or publishes (ISO 8601)"
+    },
+    "status": {
+      "$ref": "../enums/installment-status.json",
+      "description": "Lifecycle status of the installment"
+    },
+    "duration_seconds": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Expected duration of the installment in seconds"
+    },
+    "flexible_end": {
+      "type": "boolean",
+      "description": "Whether the end time is approximate (live events, sports)"
+    },
+    "valid_until": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this installment data expires and should be re-queried. Agents should re-query before committing budget to products with tentative installments."
     },
     "content_rating": {
       "$ref": "content-rating.json",
       "description": "Installment-specific content rating. Overrides the collection's baseline content_rating when present."
     },
+    "topics": {
+      "type": "array",
+      "description": "Content topics for this installment. Uses the same taxonomy as the collection's genre_taxonomy when present. Enables installment-level brand safety evaluation beyond content_rating.",
+      "items": {
+        "type": "string"
+      }
+    },
+    "special": {
+      "$ref": "special.json",
+      "description": "Installment-specific event context. When present, this installment is anchored to a real-world event. Overrides the collection-level special when present."
+    },
+    "guest_talent": {
+      "type": "array",
+      "description": "Installment-specific guests and talent. Additive to the collection's recurring talent.",
+      "items": {
+        "$ref": "talent.json"
+      }
+    },
+    "ad_inventory": {
+      "$ref": "ad-inventory-config.json",
+      "description": "Break-based ad inventory for this installment. For non-break formats (host reads, integrations), use product placements."
+    },
     "deadlines": {
       "$ref": "installment-deadlines.json",
       "description": "Booking, cancellation, and material submission deadlines for this installment. Present when the installment has time-sensitive inventory that requires advance commitment or material delivery."
     },
     "derivative_of": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "When this installment is a clip, highlight, or recap derived from a full installment. The source installment_id must reference an installment within the same response.",
       "properties": {
         "installment_id": {
-          "description": "The source installment this content is derived from",
-          "type": "string"
+          "type": "string",
+          "description": "The source installment this content is derived from"
         },
         "type": {
           "$ref": "../enums/derivative-type.json",
@@ -36,72 +94,14 @@
         "installment_id",
         "type"
       ],
-      "type": "object"
-    },
-    "duration_seconds": {
-      "description": "Expected duration of the installment in seconds",
-      "minimum": 0,
-      "type": "integer"
+      "additionalProperties": false
     },
     "ext": {
       "$ref": "ext.json"
-    },
-    "flexible_end": {
-      "description": "Whether the end time is approximate (live events, sports)",
-      "type": "boolean"
-    },
-    "guest_talent": {
-      "description": "Installment-specific guests and talent. Additive to the collection's recurring talent.",
-      "items": {
-        "$ref": "talent.json"
-      },
-      "type": "array"
-    },
-    "installment_id": {
-      "description": "Unique identifier for this installment within the collection",
-      "type": "string"
-    },
-    "installment_number": {
-      "description": "Installment number within the season (e.g., '3', '47')",
-      "type": "string"
-    },
-    "name": {
-      "description": "Installment title",
-      "type": "string"
-    },
-    "scheduled_at": {
-      "description": "When the installment airs or publishes (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
-    },
-    "season": {
-      "description": "Season identifier (e.g., '1', '2024', 'spring_2026')",
-      "type": "string"
-    },
-    "special": {
-      "$ref": "special.json",
-      "description": "Installment-specific event context. When present, this installment is anchored to a real-world event. Overrides the collection-level special when present."
-    },
-    "status": {
-      "$ref": "../enums/installment-status.json",
-      "description": "Lifecycle status of the installment"
-    },
-    "topics": {
-      "description": "Content topics for this installment. Uses the same taxonomy as the collection's genre_taxonomy when present. Enables installment-level brand safety evaluation beyond content_rating.",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "valid_until": {
-      "description": "When this installment data expires and should be re-queried. Agents should re-query before committing budget to products with tentative installments.",
-      "format": "date-time",
-      "type": "string"
     }
   },
   "required": [
     "installment_id"
   ],
-  "title": "Installment",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/job-item.json b/schemas/cache/core/job-item.json
index db98a4e78..a6fff6dac 100644
--- a/schemas/cache/core/job-item.json
+++ b/schemas/cache/core/job-item.json
@@ -1,91 +1,31 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Job Item",
   "description": "A job posting within a job-type catalog. Carries the position details that platforms use for job ads and recruitment campaigns. Maps to LinkedIn Jobs XML, Google DynamicJobsAsset, schema.org JobPosting, and similar formats.",
-  "examples": [
-    {
-      "data": {
-        "apply_url": "https://acmecorp.com/careers/eng-sr-2025-042",
-        "company_name": "Acme Corp",
-        "date_posted": "2025-06-01",
-        "description": "We're looking for a senior engineer to lead our platform team. You'll design and build distributed systems serving millions of daily requests.",
-        "employment_type": "full_time",
-        "experience_level": "senior",
-        "industries": [
-          "technology"
-        ],
-        "job_functions": [
-          "engineering"
-        ],
-        "job_id": "eng-sr-2025-042",
-        "location": "Amsterdam, NL",
-        "salary": {
-          "currency": "EUR",
-          "max": 110000,
-          "min": 80000,
-          "period": "year"
-        },
-        "tags": [
-          "visa-sponsorship",
-          "equity"
-        ],
-        "title": "Senior Software Engineer",
-        "valid_through": "2025-08-01"
-      },
-      "description": "Senior engineering role"
-    },
-    {
-      "data": {
-        "apply_url": "https://novabrands.com/careers/mkt-099",
-        "company_name": "Nova Brands",
-        "description": "6-month contract to develop and execute content strategy across owned channels.",
-        "employment_type": "contract",
-        "job_id": "mkt-contract-099",
-        "location": "Remote",
-        "salary": {
-          "currency": "USD",
-          "max": 7000,
-          "min": 5000,
-          "period": "month"
-        },
-        "tags": [
-          "remote",
-          "contract"
-        ],
-        "title": "Content Marketing Specialist"
-      },
-      "description": "Remote contract role"
-    }
-  ],
+  "type": "object",
   "properties": {
-    "apply_url": {
-      "description": "Direct application URL.",
-      "format": "uri",
-      "type": "string"
+    "job_id": {
+      "type": "string",
+      "description": "Unique identifier for this job posting."
     },
-    "assets": {
-      "description": "Typed creative asset pools for this job. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (company/role hero), 'images_vertical' (9:16 for Stories), 'logo' (company logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-      "items": {
-        "$ref": "offering-asset-group.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "title": {
+      "type": "string",
+      "description": "Job title (e.g., 'Senior Software Engineer', 'Marketing Manager')."
     },
     "company_name": {
-      "description": "Hiring company or organization name.",
-      "type": "string"
-    },
-    "date_posted": {
-      "description": "Date the job was posted (ISO 8601 date).",
-      "format": "date",
-      "type": "string"
+      "type": "string",
+      "description": "Hiring company or organization name."
     },
     "description": {
-      "description": "Full job description including responsibilities and qualifications.",
-      "type": "string"
+      "type": "string",
+      "description": "Full job description including responsibilities and qualifications."
+    },
+    "location": {
+      "type": "string",
+      "description": "Job location as a display string (e.g., 'Amsterdam, NL', 'Remote', 'New York, NY'). Use 'Remote' for fully remote positions."
     },
     "employment_type": {
-      "description": "Type of employment.",
+      "type": "string",
       "enum": [
         "full_time",
         "part_time",
@@ -94,10 +34,10 @@
         "internship",
         "freelance"
       ],
-      "type": "string"
+      "description": "Type of employment."
     },
     "experience_level": {
-      "description": "Required experience level.",
+      "type": "string",
       "enum": [
         "entry_level",
         "mid_level",
@@ -105,86 +45,92 @@
         "director",
         "executive"
       ],
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "industries": {
-      "description": "Industry classifications (e.g., 'technology', 'healthcare', 'retail').",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "job_functions": {
-      "description": "Job function categories (e.g., 'engineering', 'marketing', 'sales', 'finance').",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "job_id": {
-      "description": "Unique identifier for this job posting.",
-      "type": "string"
-    },
-    "location": {
-      "description": "Job location as a display string (e.g., 'Amsterdam, NL', 'Remote', 'New York, NY'). Use 'Remote' for fully remote positions.",
-      "type": "string"
+      "description": "Required experience level."
     },
     "salary": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Salary range. Specify min and/or max with currency and period.",
       "properties": {
-        "currency": {
-          "description": "ISO 4217 currency code.",
-          "pattern": "^[A-Z]{3}$",
-          "type": "string"
+        "min": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Minimum salary."
         },
         "max": {
-          "description": "Maximum salary.",
+          "type": "number",
           "minimum": 0,
-          "type": "number"
+          "description": "Maximum salary."
         },
-        "min": {
-          "description": "Minimum salary.",
-          "minimum": 0,
-          "type": "number"
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code."
         },
         "period": {
-          "description": "Pay period.",
+          "type": "string",
           "enum": [
             "hour",
             "month",
             "year"
           ],
-          "type": "string"
+          "description": "Pay period."
         }
       },
       "required": [
         "currency",
         "period"
       ],
-      "type": "object"
+      "additionalProperties": false
+    },
+    "date_posted": {
+      "type": "string",
+      "format": "date",
+      "description": "Date the job was posted (ISO 8601 date)."
+    },
+    "valid_through": {
+      "type": "string",
+      "format": "date",
+      "description": "Application deadline (ISO 8601 date)."
+    },
+    "apply_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Direct application URL."
+    },
+    "job_functions": {
+      "type": "array",
+      "description": "Job function categories (e.g., 'engineering', 'marketing', 'sales', 'finance').",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "industries": {
+      "type": "array",
+      "description": "Industry classifications (e.g., 'technology', 'healthcare', 'retail').",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
     },
     "tags": {
+      "type": "array",
       "description": "Tags for filtering (e.g., 'remote', 'visa-sponsorship', 'equity').",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "title": {
-      "description": "Job title (e.g., 'Senior Software Engineer', 'Marketing Manager').",
-      "type": "string"
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this job. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (company/role hero), 'images_vertical' (9:16 for Stories), 'logo' (company logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
     },
-    "valid_through": {
-      "description": "Application deadline (ISO 8601 date).",
-      "format": "date",
-      "type": "string"
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -193,6 +139,60 @@
     "company_name",
     "description"
   ],
-  "title": "Job Item",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Senior engineering role",
+      "data": {
+        "job_id": "eng-sr-2025-042",
+        "title": "Senior Software Engineer",
+        "company_name": "Acme Corp",
+        "description": "We're looking for a senior engineer to lead our platform team. You'll design and build distributed systems serving millions of daily requests.",
+        "location": "Amsterdam, NL",
+        "employment_type": "full_time",
+        "experience_level": "senior",
+        "salary": {
+          "min": 80000,
+          "max": 110000,
+          "currency": "EUR",
+          "period": "year"
+        },
+        "date_posted": "2025-06-01",
+        "valid_through": "2025-08-01",
+        "apply_url": "https://acmecorp.com/careers/eng-sr-2025-042",
+        "job_functions": [
+          "engineering"
+        ],
+        "industries": [
+          "technology"
+        ],
+        "tags": [
+          "visa-sponsorship",
+          "equity"
+        ]
+      }
+    },
+    {
+      "description": "Remote contract role",
+      "data": {
+        "job_id": "mkt-contract-099",
+        "title": "Content Marketing Specialist",
+        "company_name": "Nova Brands",
+        "description": "6-month contract to develop and execute content strategy across owned channels.",
+        "location": "Remote",
+        "employment_type": "contract",
+        "salary": {
+          "min": 5000,
+          "max": 7000,
+          "currency": "USD",
+          "period": "month"
+        },
+        "apply_url": "https://novabrands.com/careers/mkt-099",
+        "tags": [
+          "remote",
+          "contract"
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/material-deadline.json b/schemas/cache/core/material-deadline.json
index 8e638de77..e8d77a6a3 100644
--- a/schemas/cache/core/material-deadline.json
+++ b/schemas/cache/core/material-deadline.json
@@ -1,30 +1,30 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Material Deadline",
   "description": "A deadline for creative material submission. Sellers declare stages to distinguish draft materials (e.g., talking points, raw artwork) from production-ready assets (e.g., approved scripts, press-ready PDFs).",
+  "type": "object",
   "properties": {
-    "due_at": {
-      "description": "When materials for this stage are due (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
-    },
-    "label": {
-      "description": "What the seller needs at this stage (e.g., 'Talking points and brand guidelines', 'Press-ready PDF with bleed')",
-      "type": "string"
-    },
     "stage": {
+      "type": "string",
       "description": "Submission stage identifier. Use 'draft' for materials that need seller processing and 'final' for production-ready assets. Sellers may define additional stages.",
       "examples": [
         "draft",
         "final"
-      ],
-      "type": "string"
+      ]
+    },
+    "due_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When materials for this stage are due (ISO 8601)"
+    },
+    "label": {
+      "type": "string",
+      "description": "What the seller needs at this stage (e.g., 'Talking points and brand guidelines', 'Press-ready PDF with bleed')"
     }
   },
   "required": [
     "stage",
     "due_at"
   ],
-  "title": "Material Deadline",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/mcp-webhook-payload.json b/schemas/cache/core/mcp-webhook-payload.json
index 49218cfc1..0a76f131e 100644
--- a/schemas/cache/core/mcp-webhook-payload.json
+++ b/schemas/cache/core/mcp-webhook-payload.json
@@ -1,149 +1,149 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "MCP Webhook Payload",
   "description": "Standard envelope for HTTP-based push notifications (MCP). This defines the wire format sent to the URL configured in `pushNotificationConfig`. NOTE: This envelope is NOT used in A2A integration, which uses native Task/TaskStatusUpdateEvent messages with the AdCP payload nested in `status.message.parts[].data`.",
+  "type": "object",
+  "properties": {
+    "operation_id": {
+      "type": "string",
+      "description": "Client-generated identifier that was embedded in the webhook URL by the buyer. Publishers echo this back in webhook payloads so clients can correlate notifications without parsing URL paths. Typically generated as a unique ID per task invocation."
+    },
+    "task_id": {
+      "type": "string",
+      "description": "Unique identifier for this task. Use this to correlate webhook notifications with the original task submission."
+    },
+    "task_type": {
+      "$ref": "../enums/task-type.json",
+      "description": "Type of AdCP operation that triggered this webhook. Enables webhook handlers to route to appropriate processing logic."
+    },
+    "protocol": {
+      "$ref": "../enums/adcp-protocol.json",
+      "description": "AdCP protocol this task belongs to. Helps classify the operation type at a high level."
+    },
+    "status": {
+      "$ref": "../enums/task-status.json",
+      "description": "Current task status. Webhooks are triggered for status changes after initial submission."
+    },
+    "timestamp": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp when this webhook was generated."
+    },
+    "message": {
+      "type": "string",
+      "description": "Human-readable summary of the current task state. Provides context about what happened and what action may be needed."
+    },
+    "context_id": {
+      "type": "string",
+      "description": "Session/conversation identifier. Use this to continue the conversation if input-required status needs clarification or additional parameters."
+    },
+    "result": {
+      "$ref": "async-response-data.json",
+      "description": "Task-specific payload matching the status. For completed/failed, contains the full task response. For working/input-required/submitted, contains status-specific data. This is the data layer that AdCP specs - same structure used in A2A status.message.parts[].data."
+    }
+  },
+  "required": [
+    "task_id",
+    "task_type",
+    "status",
+    "timestamp"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Webhook for input-required status (human approval needed)",
       "data": {
+        "operation_id": "op_456",
+        "task_id": "task_456",
+        "task_type": "create_media_buy",
+        "protocol": "media-buy",
+        "status": "input-required",
+        "timestamp": "2025-01-22T10:15:00Z",
         "context_id": "ctx_abc123",
-        "domain": "media-buy",
         "message": "Campaign budget $150K requires VP approval to proceed",
-        "operation_id": "op_456",
         "result": {
+          "reason": "BUDGET_EXCEEDS_LIMIT",
           "errors": [
             {
               "code": "APPROVAL_REQUIRED",
-              "field": "total_budget",
-              "message": "Budget exceeds auto-approval threshold"
+              "message": "Budget exceeds auto-approval threshold",
+              "field": "total_budget"
             }
-          ],
-          "reason": "BUDGET_EXCEEDS_LIMIT"
-        },
-        "status": "input-required",
-        "task_id": "task_456",
-        "task_type": "create_media_buy",
-        "timestamp": "2025-01-22T10:15:00Z"
-      },
-      "description": "Webhook for input-required status (human approval needed)"
+          ]
+        }
+      }
     },
     {
+      "description": "Webhook for completed create_media_buy",
       "data": {
-        "domain": "media-buy",
-        "message": "Media buy created successfully with 2 packages ready for creative assignment",
         "operation_id": "op_456",
+        "task_id": "task_456",
+        "task_type": "create_media_buy",
+        "protocol": "media-buy",
+        "status": "completed",
+        "timestamp": "2025-01-22T10:30:00Z",
+        "message": "Media buy created successfully with 2 packages ready for creative assignment",
         "result": {
-          "creative_deadline": "2024-01-30T23:59:59Z",
           "media_buy_id": "mb_12345",
+          "creative_deadline": "2024-01-30T23:59:59Z",
           "packages": [
             {
+              "package_id": "pkg_12345_001",
+              "product_id": "ctv_sports_premium",
               "budget": 60000,
+              "pacing": "even",
+              "pricing_option_id": "cpm-fixed-sports",
+              "paused": false,
               "creative_assignments": [],
               "format_ids_to_provide": [
                 {
                   "agent_url": "https://creative.adcontextprotocol.org",
                   "id": "video_standard_30s"
                 }
-              ],
-              "pacing": "even",
-              "package_id": "pkg_12345_001",
-              "paused": false,
-              "pricing_option_id": "cpm-fixed-sports",
-              "product_id": "ctv_sports_premium"
+              ]
             }
           ]
-        },
-        "status": "completed",
-        "task_id": "task_456",
-        "task_type": "create_media_buy",
-        "timestamp": "2025-01-22T10:30:00Z"
-      },
-      "description": "Webhook for completed create_media_buy"
+        }
+      }
     },
     {
+      "description": "Webhook for working status with progress",
       "data": {
-        "domain": "media-buy",
-        "message": "Validating inventory availability...",
         "operation_id": "op_456",
+        "task_id": "task_456",
+        "task_type": "create_media_buy",
+        "protocol": "media-buy",
+        "status": "working",
+        "timestamp": "2025-01-22T10:20:00Z",
+        "message": "Validating inventory availability...",
         "result": {
-          "current_step": "inventory_validation",
           "percentage": 50,
+          "current_step": "inventory_validation",
           "step_number": 2,
           "total_steps": 4
-        },
-        "status": "working",
-        "task_id": "task_456",
-        "task_type": "create_media_buy",
-        "timestamp": "2025-01-22T10:20:00Z"
-      },
-      "description": "Webhook for working status with progress"
+        }
+      }
     },
     {
+      "description": "Webhook for failed sync_creatives",
       "data": {
-        "domain": "media-buy",
-        "message": "Creative sync failed due to invalid asset URLs",
         "operation_id": "op_789",
+        "task_id": "task_789",
+        "task_type": "sync_creatives",
+        "protocol": "media-buy",
+        "status": "failed",
+        "timestamp": "2025-01-22T10:46:00Z",
+        "message": "Creative sync failed due to invalid asset URLs",
         "result": {
           "errors": [
             {
               "code": "INVALID_ASSET_URL",
-              "field": "creatives[0].asset_url",
-              "message": "One or more creative assets could not be accessed"
+              "message": "One or more creative assets could not be accessed",
+              "field": "creatives[0].asset_url"
             }
           ]
-        },
-        "status": "failed",
-        "task_id": "task_789",
-        "task_type": "sync_creatives",
-        "timestamp": "2025-01-22T10:46:00Z"
-      },
-      "description": "Webhook for failed sync_creatives"
+        }
+      }
     }
-  ],
-  "properties": {
-    "context_id": {
-      "description": "Session/conversation identifier. Use this to continue the conversation if input-required status needs clarification or additional parameters.",
-      "type": "string"
-    },
-    "domain": {
-      "$ref": "../enums/adcp-domain.json",
-      "description": "AdCP domain this task belongs to. Helps classify the operation type at a high level."
-    },
-    "message": {
-      "description": "Human-readable summary of the current task state. Provides context about what happened and what action may be needed.",
-      "type": "string"
-    },
-    "operation_id": {
-      "description": "Client-generated identifier that was embedded in the webhook URL by the buyer. Publishers echo this back in webhook payloads so clients can correlate notifications without parsing URL paths. Typically generated as a unique ID per task invocation.",
-      "type": "string"
-    },
-    "result": {
-      "$ref": "async-response-data.json",
-      "description": "Task-specific payload matching the status. For completed/failed, contains the full task response. For working/input-required/submitted, contains status-specific data. This is the data layer that AdCP specs - same structure used in A2A status.message.parts[].data."
-    },
-    "status": {
-      "$ref": "../enums/task-status.json",
-      "description": "Current task status. Webhooks are triggered for status changes after initial submission."
-    },
-    "task_id": {
-      "description": "Unique identifier for this task. Use this to correlate webhook notifications with the original task submission.",
-      "type": "string"
-    },
-    "task_type": {
-      "$ref": "../enums/task-type.json",
-      "description": "Type of AdCP operation that triggered this webhook. Enables webhook handlers to route to appropriate processing logic."
-    },
-    "timestamp": {
-      "description": "ISO 8601 timestamp when this webhook was generated.",
-      "format": "date-time",
-      "type": "string"
-    }
-  },
-  "required": [
-    "task_id",
-    "task_type",
-    "status",
-    "timestamp"
-  ],
-  "title": "MCP Webhook Payload",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/measurement-readiness.json b/schemas/cache/core/measurement-readiness.json
index fbc77eb57..0d14e4b29 100644
--- a/schemas/cache/core/measurement-readiness.json
+++ b/schemas/cache/core/measurement-readiness.json
@@ -1,42 +1,42 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Measurement Readiness",
   "description": "Per-product assessment of whether the buyer's event source setup is sufficient for the product's optimization capabilities. Sellers evaluate this in the context of the buyer's account \u2014 the same product may show different readiness for different buyers depending on their event source configuration.",
+  "type": "object",
   "properties": {
-    "issues": {
-      "description": "Actionable issues preventing full measurement readiness. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.",
+    "status": {
+      "$ref": "../enums/assessment-status.json",
+      "description": "Overall measurement readiness level for this product given the buyer's event setup. 'insufficient' means the product cannot optimize effectively with the current setup."
+    },
+    "required_event_types": {
+      "type": "array",
+      "description": "Event types this product needs for effective optimization. Buyers should ensure their event sources cover these types.",
       "items": {
-        "$ref": "diagnostic-issue.json"
+        "$ref": "../enums/event-type.json"
       },
-      "type": "array"
+      "minItems": 1
     },
     "missing_event_types": {
+      "type": "array",
       "description": "Event types this product requires that the buyer has not configured. Empty or absent when all required types are covered.",
       "items": {
         "$ref": "../enums/event-type.json"
-      },
-      "type": "array"
-    },
-    "notes": {
-      "description": "Seller explanation of the readiness assessment, recommendations for improvement, or context about what the buyer needs to change.",
-      "type": "string"
+      }
     },
-    "required_event_types": {
-      "description": "Event types this product needs for effective optimization. Buyers should ensure their event sources cover these types.",
+    "issues": {
+      "type": "array",
+      "description": "Actionable issues preventing full measurement readiness. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.",
       "items": {
-        "$ref": "../enums/event-type.json"
-      },
-      "minItems": 1,
-      "type": "array"
+        "$ref": "diagnostic-issue.json"
+      }
     },
-    "status": {
-      "$ref": "../enums/assessment-status.json",
-      "description": "Overall measurement readiness level for this product given the buyer's event setup. 'insufficient' means the product cannot optimize effectively with the current setup."
+    "notes": {
+      "type": "string",
+      "description": "Seller explanation of the readiness assessment, recommendations for improvement, or context about what the buyer needs to change."
     }
   },
   "required": [
     "status"
   ],
-  "title": "Measurement Readiness",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/measurement-terms.json b/schemas/cache/core/measurement-terms.json
index 12e84ea97..83ea35175 100644
--- a/schemas/cache/core/measurement-terms.json
+++ b/schemas/cache/core/measurement-terms.json
@@ -20,11 +20,16 @@
         },
         "measurement_window": {
           "type": "string",
-          "description": "Which measurement window the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. For broadcast TV, this is typically 'c7' (live + 7 days DVR). When absent, billing is based on the seller's standard reporting without windowed maturation.",
+          "description": "Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
           "examples": [
             "live",
             "c3",
-            "c7"
+            "c7",
+            "tentative",
+            "final",
+            "post_ivt",
+            "post_sivt",
+            "downloads_30d"
           ]
         }
       },
diff --git a/schemas/cache/core/measurement-window.json b/schemas/cache/core/measurement-window.json
new file mode 100644
index 000000000..05464df0f
--- /dev/null
+++ b/schemas/cache/core/measurement-window.json
@@ -0,0 +1,53 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Measurement Window",
+  "description": "A measurement maturation stage for any channel where billing-grade data is produced in phases rather than arriving final on day one. Each window represents an accumulation or processing stage with its own expected availability. Examples: broadcast/linear TV (live \u2192 C3 \u2192 C7 DVR accumulation), DOOH (tentative plays \u2192 post-IVT/fraud-check final), digital (raw impressions \u2192 GIVT filtered \u2192 SIVT filtered), podcast (7-day downloads \u2192 30-day downloads), audio/radio (tentative \u2192 diary/panel-certified). Sellers whose data is final on first delivery omit this.",
+  "type": "object",
+  "properties": {
+    "window_id": {
+      "type": "string",
+      "maxLength": 50,
+      "description": "Identifier for this maturation stage. Standard broadcast values: 'live' (real-time viewers only), 'c3' (live + 3 days time-shifted), 'c7' (live + 7 days time-shifted). Standard values for other channels include 'tentative' (provisional data available quickly), 'final' (post-processing certified data), 'post_ivt' (digital after invalid-traffic filtering), 'post_sivt' (digital after sophisticated-IVT filtering), 'downloads_7d' / 'downloads_30d' (podcast download maturation). Sellers may define custom IDs.",
+      "examples": [
+        "live",
+        "c3",
+        "c7",
+        "tentative",
+        "final",
+        "post_ivt",
+        "downloads_30d"
+      ]
+    },
+    "description": {
+      "type": "string",
+      "maxLength": 500,
+      "description": "Human-readable description of what this window measures",
+      "examples": [
+        "Live broadcast impressions only",
+        "Live plus 7 days of time-shifted viewing",
+        "Tentative plays before IVT and fraud-check processing",
+        "Final plays after IVT and fraud-check processing",
+        "Impressions after sophisticated invalid-traffic filtering"
+      ]
+    },
+    "duration_days": {
+      "type": "integer",
+      "description": "Number of days of accumulation included in this window before processing begins. For broadcast, this is DVR accumulation (0 = live only, 3 = live + 3 days DVR, 7 = live + 7 days DVR). For channels without an accumulation period (DOOH tentative\u2192final, digital IVT filtering), this is 0 \u2014 maturation is entirely vendor processing time captured in expected_availability_days.",
+      "minimum": 0
+    },
+    "expected_availability_days": {
+      "type": "integer",
+      "description": "Expected number of days after delivery before this window's data is available from the measurement vendor. Captures accumulation time plus vendor processing time. Examples: broadcast C7 from VideoAmp ~22 days (7-day accumulation + ~15-day processing); DOOH tentative plays same-day; DOOH final (post-IVT/fraud-check) ~1 day; digital post-SIVT ~2\u20133 days.",
+      "minimum": 0
+    },
+    "is_guarantee_basis": {
+      "type": "boolean",
+      "description": "Whether this window is the basis for delivery guarantees, reconciliation, and invoicing. A product typically has one guarantee basis window (e.g., C7 for most US broadcast, post-IVT final for DOOH). Buyers reconcile against the guarantee basis window's final numbers."
+    }
+  },
+  "required": [
+    "window_id",
+    "duration_days"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/media-buy-features.json b/schemas/cache/core/media-buy-features.json
index aa812c99e..a40ba67d2 100644
--- a/schemas/cache/core/media-buy-features.json
+++ b/schemas/cache/core/media-buy-features.json
@@ -1,35 +1,23 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": {
-    "type": "boolean"
-  },
+  "title": "Media Buy Features",
   "description": "Optional media-buy protocol features. Used in capability declarations (seller declares support) and product filters (buyer requires support). If a seller declares a feature as true, they MUST honor requests using that feature.",
+  "type": "object",
   "properties": {
-    "audience_targeting": {
-      "description": "Supports sync_audiences task and audience_include/audience_exclude in targeting overlays for first-party CRM audience management",
-      "type": "boolean"
-    },
-    "catalog_management": {
-      "description": "Supports sync_catalogs task for catalog feed management with platform review and approval",
-      "type": "boolean"
-    },
-    "content_standards": {
-      "description": "Full support for content_standards configuration including sampling rates and category filtering",
-      "type": "boolean"
-    },
-    "conversion_tracking": {
-      "description": "Supports sync_event_sources and log_event tasks for conversion event tracking",
-      "type": "boolean"
-    },
     "inline_creative_management": {
-      "description": "Supports creatives provided inline in create_media_buy requests",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Supports creatives provided inline in create_media_buy requests"
     },
     "property_list_filtering": {
-      "description": "Honors property_list parameter in get_products to filter results to buyer-approved properties",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Honors property_list parameter in get_products to filter results to buyer-approved properties"
+    },
+    "catalog_management": {
+      "type": "boolean",
+      "description": "Supports sync_catalogs task for catalog feed management with platform review and approval"
     }
   },
-  "title": "Media Buy Features",
-  "type": "object"
+  "additionalProperties": {
+    "type": "boolean"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/core/media-buy.json b/schemas/cache/core/media-buy.json
index e53413b50..a85d6a2c7 100644
--- a/schemas/cache/core/media-buy.json
+++ b/schemas/cache/core/media-buy.json
@@ -1,91 +1,92 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Media Buy",
   "description": "Represents a purchased advertising campaign",
+  "type": "object",
   "properties": {
+    "media_buy_id": {
+      "type": "string",
+      "description": "Seller's unique identifier for the media buy"
+    },
     "account": {
       "$ref": "account.json",
       "description": "Account billed for this media buy"
     },
+    "status": {
+      "$ref": "../enums/media-buy-status.json"
+    },
+    "rejection_reason": {
+      "type": "string",
+      "description": "Reason provided by the seller when status is 'rejected'. Present only when status is 'rejected'."
+    },
+    "confirmed_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation."
+    },
     "cancellation": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Cancellation metadata. Present only when status is 'canceled'.",
+      "required": [
+        "canceled_at",
+        "canceled_by"
+      ],
       "properties": {
         "canceled_at": {
-          "description": "ISO 8601 timestamp when this media buy was canceled.",
+          "type": "string",
           "format": "date-time",
-          "type": "string"
+          "description": "ISO 8601 timestamp when this media buy was canceled."
         },
         "canceled_by": {
           "$ref": "../enums/canceled-by.json",
           "description": "Which party initiated the cancellation. 'buyer' when canceled via update_media_buy; 'seller' when the seller cancels (e.g., policy violation, inventory withdrawal)."
         },
         "reason": {
+          "type": "string",
           "description": "Reason provided when the media buy was canceled.",
-          "maxLength": 500,
-          "type": "string"
+          "maxLength": 500
         }
       },
-      "required": [
-        "canceled_at",
-        "canceled_by"
-      ],
-      "type": "object"
-    },
-    "confirmed_at": {
-      "description": "ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation.",
-      "format": "date-time",
-      "type": "string"
+      "additionalProperties": false
     },
-    "created_at": {
-      "description": "Creation timestamp",
-      "format": "date-time",
-      "type": "string"
-    },
-    "creative_deadline": {
-      "description": "ISO 8601 timestamp for creative upload deadline",
-      "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "invoice_recipient": {
-      "$ref": "business-entity.json",
-      "description": "Per-buy override for who receives the invoice. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
-    },
-    "media_buy_id": {
-      "description": "Seller's unique identifier for the media buy",
-      "type": "string"
+    "total_budget": {
+      "type": "number",
+      "description": "Total budget amount",
+      "minimum": 0
     },
     "packages": {
+      "type": "array",
       "description": "Array of packages within this media buy",
       "items": {
         "$ref": "package.json"
-      },
-      "type": "array"
+      }
     },
-    "rejection_reason": {
-      "description": "Reason provided by the seller when status is 'rejected'. Present only when status is 'rejected'.",
-      "type": "string"
+    "invoice_recipient": {
+      "$ref": "business-entity.json",
+      "description": "Per-buy override for who receives the invoice. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
+    },
+    "creative_deadline": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp for creative upload deadline"
     },
     "revision": {
+      "type": "integer",
       "description": "Monotonically increasing revision number. Incremented on every state change or update. Callers MAY include this in update_media_buy requests for optimistic concurrency \u2014 sellers MUST reject with CONFLICT if the provided revision does not match the current value.",
-      "minimum": 1,
-      "type": "integer"
+      "minimum": 1
     },
-    "status": {
-      "$ref": "../enums/media-buy-status.json"
-    },
-    "total_budget": {
-      "description": "Total budget amount",
-      "minimum": 0,
-      "type": "number"
+    "created_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Creation timestamp"
     },
     "updated_at": {
-      "description": "Last update timestamp",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Last update timestamp"
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -94,6 +95,5 @@
     "total_budget",
     "packages"
   ],
-  "title": "Media Buy",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/offering-asset-group.json b/schemas/cache/core/offering-asset-group.json
index 188844bda..5c39e671b 100644
--- a/schemas/cache/core/offering-asset-group.json
+++ b/schemas/cache/core/offering-asset-group.json
@@ -1,59 +1,19 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Offering Asset Group",
   "description": "A structured group of creative assets within an offering, identified by a group ID and asset type. Enables offerings to carry per-group creative pools (headlines, images, videos) using the same vocabulary as format-level asset definitions.",
-  "examples": [
-    {
-      "data": {
-        "asset_group_id": "headlines",
-        "asset_type": "text",
-        "items": [
-          {
-            "content": "Shop the Summer Sale"
-          },
-          {
-            "content": "50% Off Everything"
-          },
-          {
-            "content": "Summer Savings Event"
-          }
-        ]
-      },
-      "description": "Headline text assets"
-    },
-    {
-      "data": {
-        "asset_group_id": "images_landscape",
-        "asset_type": "image",
-        "items": [
-          {
-            "height": 628,
-            "url": "https://cdn.acme.com/hero.jpg",
-            "width": 1200
-          },
-          {
-            "height": 628,
-            "url": "https://cdn.acme.com/hero2.jpg",
-            "width": 1200
-          }
-        ]
-      },
-      "description": "Landscape image assets"
-    }
-  ],
+  "type": "object",
   "properties": {
     "asset_group_id": {
-      "description": "Identifies the creative role this group fills. Values are defined by each format's offering_asset_constraints \u2014 not protocol constants. Discover them via list_creative_formats (e.g., a format might declare 'headlines', 'images', or 'videos').",
-      "type": "string"
+      "type": "string",
+      "description": "Identifies the creative role this group fills. Values are defined by each format's offering_asset_constraints \u2014 not protocol constants. Discover them via list_creative_formats (e.g., a format might declare 'headlines', 'images', or 'videos')."
     },
     "asset_type": {
       "$ref": "../enums/asset-content-type.json",
       "description": "The content type of all items in this group."
     },
-    "ext": {
-      "$ref": "ext.json"
-    },
     "items": {
+      "type": "array",
       "description": "The assets in this group. Each item should match the structure for the declared asset_type. Note: JSON Schema validation accepts any valid asset structure here; enforcement that items match asset_type is the responsibility of the consuming agent.",
       "items": {
         "anyOf": [
@@ -95,8 +55,10 @@
           }
         ]
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -104,6 +66,44 @@
     "asset_type",
     "items"
   ],
-  "title": "Offering Asset Group",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Headline text assets",
+      "data": {
+        "asset_group_id": "headlines",
+        "asset_type": "text",
+        "items": [
+          {
+            "content": "Shop the Summer Sale"
+          },
+          {
+            "content": "50% Off Everything"
+          },
+          {
+            "content": "Summer Savings Event"
+          }
+        ]
+      }
+    },
+    {
+      "description": "Landscape image assets",
+      "data": {
+        "asset_group_id": "images_landscape",
+        "asset_type": "image",
+        "items": [
+          {
+            "url": "https://cdn.acme.com/hero.jpg",
+            "width": 1200,
+            "height": 628
+          },
+          {
+            "url": "https://cdn.acme.com/hero2.jpg",
+            "width": 1200,
+            "height": 628
+          }
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/offering.json b/schemas/cache/core/offering.json
index 1f4222a42..2b78c8601 100644
--- a/schemas/cache/core/offering.json
+++ b/schemas/cache/core/offering.json
@@ -1,260 +1,260 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Offering",
   "description": "A promotable offering from a brand. Can represent a campaign, product promotion, service, or any other thing the brand wants to make available. Offerings carry structured asset groups for creative assembly and can be promoted via traditional creatives or conversational SI experiences (via the brand's SI agent).",
-  "examples": [
-    {
-      "data": {
-        "categories": [
-          "measurement",
-          "sustainability"
-        ],
-        "checkout_url": "https://scope3.com/signup",
-        "description": "Try our carbon measurement platform free for 30 days",
-        "keywords": [
-          "carbon",
-          "sustainability",
-          "measurement",
-          "emissions"
-        ],
-        "name": "Free 30-day trial",
-        "offering_id": "q1-2025-trial",
-        "tagline": "Start measuring your digital carbon footprint today",
-        "valid_from": "2025-01-01T00:00:00Z",
-        "valid_to": "2025-03-31T23:59:59Z"
-      },
-      "description": "Time-limited promotional offer with checkout"
+  "type": "object",
+  "properties": {
+    "offering_id": {
+      "type": "string",
+      "description": "Unique identifier for this offering. Used by hosts to reference specific offerings in si_get_offering calls."
     },
-    {
-      "data": {
-        "categories": [
-          "programmatic",
-          "dsp"
-        ],
-        "description": "Full-featured demand-side platform for enterprise advertisers",
-        "keywords": [
-          "dsp",
-          "programmatic",
-          "rtb",
-          "ctv"
-        ],
-        "landing_url": "https://thetradedesk.com/enterprise",
-        "name": "Enterprise DSP Platform",
-        "offering_id": "enterprise-dsp"
-      },
-      "description": "Product offering with landing page"
+    "name": {
+      "type": "string",
+      "description": "Human-readable offering name (e.g., 'Winter Sale', 'Free Trial', 'Enterprise Platform')"
     },
-    {
-      "data": {
-        "description": "Full-time head chef position at our Amsterdam location",
-        "geo_targets": {
-          "countries": [
-            "NL"
-          ],
-          "regions": [
-            "NL-NH"
-          ]
-        },
-        "landing_url": "https://careers.acme.com/vacancies/42",
-        "name": "Head Chef \u2014 Amsterdam",
-        "offering_id": "vacancy-amsterdam-chef-42"
-      },
-      "description": "Location-specific offering with geo targets"
+    "description": {
+      "type": "string",
+      "description": "Description of what's being offered"
     },
-    {
-      "data": {
-        "assets": [
-          {
-            "asset_group_id": "headlines",
-            "asset_type": "text",
-            "items": [
-              {
-                "content": "Shop the Summer Sale"
-              },
-              {
-                "content": "50% Off Everything"
-              },
-              {
-                "content": "Summer Savings Event"
-              }
-            ]
-          },
-          {
-            "asset_group_id": "images_landscape",
-            "asset_type": "image",
-            "items": [
-              {
-                "height": 628,
-                "url": "https://cdn.acme.com/hero.jpg",
-                "width": 1200
-              }
-            ]
-          },
-          {
-            "asset_group_id": "images_square",
-            "asset_type": "image",
-            "items": [
-              {
-                "height": 600,
-                "url": "https://cdn.acme.com/sq.jpg",
-                "width": 600
-              }
-            ]
-          }
-        ],
-        "description": "Up to 50% off summer collection",
-        "landing_url": "https://acme.com/summer",
-        "name": "Summer Sale",
-        "offering_id": "summer-sale"
-      },
-      "description": "Offering with structured asset groups"
-    }
-  ],
-  "properties": {
-    "assets": {
-      "description": "Structured asset groups for this offering. Each group carries a typed pool of creative assets (headlines, images, videos, etc.) identified by a group ID that matches format-level vocabulary.",
-      "items": {
-        "$ref": "offering-asset-group.json"
-      },
-      "type": "array"
+    "tagline": {
+      "type": "string",
+      "description": "Short promotional tagline for the offering"
     },
-    "categories": {
-      "description": "Categories this offering belongs to (e.g., 'measurement', 'identity', 'programmatic')",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
+    "valid_from": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the offering becomes available. If not specified, offering is immediately available."
+    },
+    "valid_to": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the offering expires. If not specified, offering has no expiration."
     },
     "checkout_url": {
-      "description": "URL for checkout/purchase flow when the brand doesn't support agentic checkout.",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL for checkout/purchase flow when the brand doesn't support agentic checkout."
     },
-    "description": {
-      "description": "Description of what's being offered",
-      "type": "string"
+    "landing_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Landing page URL for this offering. For catalog-driven creatives, this is the per-item click-through destination that platforms map to the ad's link-out URL. Every offering in a catalog should have a landing_url unless the format provides its own destination logic."
     },
-    "ext": {
-      "$ref": "ext.json"
+    "assets": {
+      "type": "array",
+      "description": "Structured asset groups for this offering. Each group carries a typed pool of creative assets (headlines, images, videos, etc.) identified by a group ID that matches format-level vocabulary.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      }
     },
     "geo_targets": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Geographic scope of this offering. Declares where the offering is relevant \u2014 for location-specific offerings such as job vacancies, in-store promotions, or local events. Platforms use this to target geographically appropriate audiences and to filter out offerings irrelevant to a user's location. Uses the same geographic structures as targeting_overlay in create_media_buy.",
       "properties": {
         "countries": {
+          "type": "array",
           "description": "Countries where this offering is relevant. ISO 3166-1 alpha-2 codes (e.g., 'US', 'NL', 'DE').",
           "items": {
-            "pattern": "^[A-Z]{2}$",
-            "type": "string"
+            "type": "string",
+            "pattern": "^[A-Z]{2}$"
+          },
+          "minItems": 1
+        },
+        "regions": {
+          "type": "array",
+          "description": "Regions or states where this offering is relevant. ISO 3166-2 subdivision codes (e.g., 'NL-NH', 'US-CA').",
+          "items": {
+            "type": "string",
+            "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
         "metros": {
+          "type": "array",
           "description": "Metro areas where this offering is relevant. Each entry specifies the classification system and target values.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
               "system": {
                 "$ref": "../enums/metro-system.json",
                 "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')"
               },
               "values": {
+                "type": "array",
                 "description": "Metro codes within the system",
                 "items": {
                   "type": "string"
                 },
-                "minItems": 1,
-                "type": "array"
+                "minItems": 1
               }
             },
             "required": [
               "system",
               "values"
             ],
-            "type": "object"
+            "additionalProperties": true
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
         "postal_areas": {
+          "type": "array",
           "description": "Postal areas where this offering is relevant. Each entry specifies the postal system and target values.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
               "system": {
                 "$ref": "../enums/postal-system.json",
                 "description": "Postal code system (e.g., 'us_zip', 'de_plz')"
               },
               "values": {
+                "type": "array",
                 "description": "Postal codes within the system",
                 "items": {
                   "type": "string"
                 },
-                "minItems": 1,
-                "type": "array"
+                "minItems": 1
               }
             },
             "required": [
               "system",
               "values"
             ],
-            "type": "object"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "regions": {
-          "description": "Regions or states where this offering is relevant. ISO 3166-2 subdivision codes (e.g., 'NL-NH', 'US-CA').",
-          "items": {
-            "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$",
-            "type": "string"
+            "additionalProperties": true
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
     "keywords": {
+      "type": "array",
       "description": "Keywords for matching this offering to user intent. Hosts use these for retrieval/relevance scoring.",
       "items": {
         "type": "string"
-      },
-      "type": "array"
-    },
-    "landing_url": {
-      "description": "Landing page URL for this offering. For catalog-driven creatives, this is the per-item click-through destination that platforms map to the ad's link-out URL. Every offering in a catalog should have a landing_url unless the format provides its own destination logic.",
-      "format": "uri",
-      "type": "string"
+      }
     },
-    "name": {
-      "description": "Human-readable offering name (e.g., 'Winter Sale', 'Free Trial', 'Enterprise Platform')",
-      "type": "string"
-    },
-    "offering_id": {
-      "description": "Unique identifier for this offering. Used by hosts to reference specific offerings in si_get_offering calls.",
-      "type": "string"
-    },
-    "tagline": {
-      "description": "Short promotional tagline for the offering",
-      "type": "string"
-    },
-    "valid_from": {
-      "description": "When the offering becomes available. If not specified, offering is immediately available.",
-      "format": "date-time",
-      "type": "string"
+    "categories": {
+      "type": "array",
+      "description": "Categories this offering belongs to (e.g., 'measurement', 'identity', 'programmatic')",
+      "items": {
+        "type": "string"
+      }
     },
-    "valid_to": {
-      "description": "When the offering expires. If not specified, offering has no expiration.",
-      "format": "date-time",
-      "type": "string"
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "offering_id",
     "name"
   ],
-  "title": "Offering",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Time-limited promotional offer with checkout",
+      "data": {
+        "offering_id": "q1-2025-trial",
+        "name": "Free 30-day trial",
+        "description": "Try our carbon measurement platform free for 30 days",
+        "tagline": "Start measuring your digital carbon footprint today",
+        "valid_from": "2025-01-01T00:00:00Z",
+        "valid_to": "2025-03-31T23:59:59Z",
+        "checkout_url": "https://vendor.example.com/signup",
+        "keywords": [
+          "carbon",
+          "sustainability",
+          "measurement",
+          "emissions"
+        ],
+        "categories": [
+          "measurement",
+          "sustainability"
+        ]
+      }
+    },
+    {
+      "description": "Product offering with landing page",
+      "data": {
+        "offering_id": "enterprise-dsp",
+        "name": "Enterprise DSP Platform",
+        "description": "Full-featured demand-side platform for enterprise advertisers",
+        "landing_url": "https://thetradedesk.com/enterprise",
+        "keywords": [
+          "dsp",
+          "programmatic",
+          "rtb",
+          "ctv"
+        ],
+        "categories": [
+          "programmatic",
+          "dsp"
+        ]
+      }
+    },
+    {
+      "description": "Location-specific offering with geo targets",
+      "data": {
+        "offering_id": "vacancy-amsterdam-chef-42",
+        "name": "Head Chef \u2014 Amsterdam",
+        "description": "Full-time head chef position at our Amsterdam location",
+        "landing_url": "https://careers.acme.com/vacancies/42",
+        "geo_targets": {
+          "countries": [
+            "NL"
+          ],
+          "regions": [
+            "NL-NH"
+          ]
+        }
+      }
+    },
+    {
+      "description": "Offering with structured asset groups",
+      "data": {
+        "offering_id": "summer-sale",
+        "name": "Summer Sale",
+        "description": "Up to 50% off summer collection",
+        "landing_url": "https://acme.com/summer",
+        "assets": [
+          {
+            "asset_group_id": "headlines",
+            "asset_type": "text",
+            "items": [
+              {
+                "content": "Shop the Summer Sale"
+              },
+              {
+                "content": "50% Off Everything"
+              },
+              {
+                "content": "Summer Savings Event"
+              }
+            ]
+          },
+          {
+            "asset_group_id": "images_landscape",
+            "asset_type": "image",
+            "items": [
+              {
+                "url": "https://cdn.acme.com/hero.jpg",
+                "width": 1200,
+                "height": 628
+              }
+            ]
+          },
+          {
+            "asset_group_id": "images_square",
+            "asset_type": "image",
+            "items": [
+              {
+                "url": "https://cdn.acme.com/sq.jpg",
+                "width": 600,
+                "height": 600
+              }
+            ]
+          }
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/optimization-goal.json b/schemas/cache/core/optimization-goal.json
index a1cce0d66..0a9475aa6 100644
--- a/schemas/cache/core/optimization-goal.json
+++ b/schemas/cache/core/optimization-goal.json
@@ -1,17 +1,18 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Optimization Goal",
   "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Optimize for a seller-tracked delivery metric. No event source required \u2014 the seller tracks these natively.",
       "properties": {
         "kind": {
-          "const": "metric",
-          "type": "string"
+          "type": "string",
+          "const": "metric"
         },
         "metric": {
-          "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks').",
+          "type": "string",
           "enum": [
             "clicks",
             "views",
@@ -25,12 +26,7 @@
             "profile_visits",
             "reach"
           ],
-          "type": "string"
-        },
-        "priority": {
-          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.",
-          "minimum": 1,
-          "type": "integer"
+          "description": "Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions \u2014 see view_duration_seconds), reach (unique audience reach \u2014 see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing \u2014 social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins \u2014 signals of intent to return), profile_visits (visits to the brand's in-platform page \u2014 profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
         },
         "reach_unit": {
           "allOf": [
@@ -40,245 +36,249 @@
           ],
           "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
         },
+        "target_frequency": {
+          "type": "object",
+          "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
+          "properties": {
+            "min": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1)."
+            },
+            "max": {
+              "type": "integer",
+              "minimum": 1,
+              "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point."
+            },
+            "window": {
+              "allOf": [
+                {
+                  "$ref": "duration.json"
+                }
+              ],
+              "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
+            }
+          },
+          "required": [
+            "window"
+          ],
+          "anyOf": [
+            {
+              "required": [
+                "min"
+              ]
+            },
+            {
+              "required": [
+                "max"
+              ]
+            }
+          ],
+          "additionalProperties": true
+        },
+        "view_duration_seconds": {
+          "type": "number",
+          "exclusiveMinimum": 0,
+          "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies."
+        },
         "target": {
           "description": "Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.",
           "oneOf": [
             {
-              "additionalProperties": true,
+              "type": "object",
               "description": "Target cost per unit of the metric (e.g., cost per click, cost per completed view).",
               "properties": {
                 "kind": {
-                  "const": "cost_per",
-                  "type": "string"
+                  "type": "string",
+                  "const": "cost_per"
                 },
                 "value": {
-                  "description": "Target cost per metric unit in the buy currency",
+                  "type": "number",
                   "exclusiveMinimum": 0,
-                  "type": "number"
+                  "description": "Target cost per metric unit in the buy currency"
                 }
               },
               "required": [
                 "kind",
                 "value"
               ],
-              "type": "object"
+              "additionalProperties": true
             },
             {
-              "additionalProperties": true,
+              "type": "object",
               "description": "Minimum per-impression rate for this metric. The metric defines the units: proportions for count metrics (e.g., 0.001 for 0.1% CTR, 0.70 for 70% viewability), seconds for duration metrics (e.g., 3.0 for 3s in view), or score for score metrics.",
               "properties": {
                 "kind": {
-                  "const": "threshold_rate",
-                  "type": "string"
+                  "type": "string",
+                  "const": "threshold_rate"
                 },
                 "value": {
-                  "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).",
+                  "type": "number",
                   "exclusiveMinimum": 0,
-                  "type": "number"
+                  "description": "Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score)."
                 }
               },
               "required": [
                 "kind",
                 "value"
               ],
-              "type": "object"
+              "additionalProperties": true
             }
           ]
         },
-        "target_frequency": {
-          "additionalProperties": true,
-          "anyOf": [
-            {
-              "required": [
-                "min"
-              ]
-            },
-            {
-              "required": [
-                "max"
-              ]
-            }
-          ],
-          "description": "Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed.",
-          "properties": {
-            "max": {
-              "description": "Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.",
-              "minimum": 1,
-              "type": "integer"
-            },
-            "min": {
-              "description": "Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).",
-              "minimum": 1,
-              "type": "integer"
-            },
-            "window": {
-              "allOf": [
-                {
-                  "$ref": "duration.json"
-                }
-              ],
-              "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
-            }
-          },
-          "required": [
-            "window"
-          ],
-          "type": "object"
-        },
-        "view_duration_seconds": {
-          "description": "Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2\u201315 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values \u2014 silent rounding would create measurement discrepancies.",
-          "exclusiveMinimum": 0,
-          "type": "number"
+        "priority": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
         }
       },
       "required": [
         "kind",
         "metric"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Optimize for advertiser-tracked conversion events. Requires event sources registered via sync_event_sources.",
       "properties": {
-        "attribution_window": {
-          "additionalProperties": true,
-          "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
-          "properties": {
-            "post_click": {
-              "allOf": [
-                {
-                  "$ref": "duration.json"
-                }
-              ],
-              "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
-            },
-            "post_view": {
-              "allOf": [
-                {
-                  "$ref": "duration.json"
-                }
-              ],
-              "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
-            }
-          },
-          "required": [
-            "post_click"
-          ],
-          "type": "object"
+        "kind": {
+          "type": "string",
+          "const": "event"
         },
         "event_sources": {
+          "type": "array",
           "description": "Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries \u2014 the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
-              "custom_event_name": {
-                "description": "Required when event_type is 'custom'. Platform-specific name for the custom event.",
-                "type": "string"
-              },
               "event_source_id": {
-                "description": "Event source to include (must be configured on this account via sync_event_sources)",
+                "type": "string",
                 "minLength": 1,
-                "type": "string"
+                "description": "Event source to include (must be configured on this account via sync_event_sources)"
               },
               "event_type": {
                 "$ref": "../enums/event-type.json",
                 "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)"
               },
-              "value_factor": {
-                "default": 1,
-                "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics.",
-                "type": "number"
+              "custom_event_name": {
+                "type": "string",
+                "description": "Required when event_type is 'custom'. Platform-specific name for the custom event."
               },
               "value_field": {
-                "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value'. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism.",
-                "type": "string"
+                "type": "string",
+                "description": "Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' \u2014 sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs \u2014 the seller maps it to their platform's value ingestion mechanism."
+              },
+              "value_factor": {
+                "type": "number",
+                "default": 1,
+                "description": "Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs \u2014 the seller applies it when computing aggregated value metrics."
               }
             },
             "required": [
               "event_source_id",
               "event_type"
             ],
-            "type": "object"
+            "additionalProperties": true
           },
-          "minItems": 1,
-          "type": "array"
-        },
-        "kind": {
-          "const": "event",
-          "type": "string"
-        },
-        "priority": {
-          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.",
-          "minimum": 1,
-          "type": "integer"
+          "minItems": 1
         },
         "target": {
-          "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversions within budget.",
+          "description": "Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget \u2014 regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.",
           "oneOf": [
             {
-              "additionalProperties": true,
+              "type": "object",
               "description": "Target cost per conversion event (after deduplication across event_sources).",
               "properties": {
                 "kind": {
-                  "const": "cost_per",
-                  "type": "string"
+                  "type": "string",
+                  "const": "cost_per"
                 },
                 "value": {
-                  "description": "Target cost per event in the buy currency",
+                  "type": "number",
                   "exclusiveMinimum": 0,
-                  "type": "number"
+                  "description": "Target cost per event in the buy currency"
                 }
               },
               "required": [
                 "kind",
                 "value"
               ],
-              "type": "object"
+              "additionalProperties": true
             },
             {
-              "additionalProperties": true,
+              "type": "object",
               "description": "Target return per unit of ad spend, calculated as sum(value_field * value_factor) / spend across all deduplicated events. Requires value_field on at least one event_sources entry.",
               "properties": {
                 "kind": {
-                  "const": "per_ad_spend",
-                  "type": "string"
+                  "type": "string",
+                  "const": "per_ad_spend"
                 },
                 "value": {
-                  "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)",
+                  "type": "number",
                   "exclusiveMinimum": 0,
-                  "type": "number"
+                  "description": "Target return ratio (e.g., 4.0 means $4 of value per $1 spent)"
                 }
               },
               "required": [
                 "kind",
                 "value"
               ],
-              "type": "object"
+              "additionalProperties": true
             },
             {
-              "additionalProperties": true,
+              "type": "object",
               "description": "Maximize total conversion value within budget, without a specific return ratio target. Steers spend toward higher-value conversions rather than maximizing conversion count. Requires value_field on at least one event_sources entry.",
               "properties": {
                 "kind": {
-                  "const": "maximize_value",
-                  "type": "string"
+                  "type": "string",
+                  "const": "maximize_value"
                 }
               },
               "required": [
                 "kind"
               ],
-              "type": "object"
+              "additionalProperties": true
             }
           ]
+        },
+        "attribution_window": {
+          "type": "object",
+          "description": "Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window.",
+          "properties": {
+            "post_click": {
+              "allOf": [
+                {
+                  "$ref": "duration.json"
+                }
+              ],
+              "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
+            },
+            "post_view": {
+              "allOf": [
+                {
+                  "$ref": "duration.json"
+                }
+              ],
+              "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
+            }
+          },
+          "required": [
+            "post_click"
+          ],
+          "additionalProperties": true
+        },
+        "priority": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority."
         }
       },
       "required": [
         "kind",
         "event_sources"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Optimization Goal"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/outcome-measurement.json b/schemas/cache/core/outcome-measurement.json
index b653407f5..0ea4433b8 100644
--- a/schemas/cache/core/outcome-measurement.json
+++ b/schemas/cache/core/outcome-measurement.json
@@ -1,32 +1,25 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Outcome Measurement",
   "description": "Business outcome measurement capabilities included with a product (e.g., incremental sales lift, brand lift, foot traffic). Distinct from delivery_measurement, which declares who counts ad impressions.",
+  "type": "object",
   "properties": {
-    "attribution": {
-      "description": "Attribution methodology",
-      "examples": [
-        "deterministic_purchase",
-        "probabilistic"
-      ],
-      "type": "string"
-    },
-    "reporting": {
-      "description": "Reporting frequency and format",
-      "examples": [
-        "weekly_dashboard",
-        "real_time_api"
-      ],
-      "type": "string"
-    },
     "type": {
+      "type": "string",
       "description": "Type of measurement",
       "examples": [
         "incremental_sales_lift",
         "brand_lift",
         "foot_traffic"
-      ],
-      "type": "string"
+      ]
+    },
+    "attribution": {
+      "type": "string",
+      "description": "Attribution methodology",
+      "examples": [
+        "deterministic_purchase",
+        "probabilistic"
+      ]
     },
     "window": {
       "allOf": [
@@ -35,6 +28,14 @@
         }
       ],
       "description": "Attribution window as a structured duration (e.g., {\"interval\": 30, \"unit\": \"days\"})."
+    },
+    "reporting": {
+      "type": "string",
+      "description": "Reporting frequency and format",
+      "examples": [
+        "weekly_dashboard",
+        "real_time_api"
+      ]
     }
   },
   "required": [
@@ -42,6 +43,5 @@
     "attribution",
     "reporting"
   ],
-  "title": "Outcome Measurement",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/overlay.json b/schemas/cache/core/overlay.json
index a6fdec30f..975e40ef3 100644
--- a/schemas/cache/core/overlay.json
+++ b/schemas/cache/core/overlay.json
@@ -1,19 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Overlay",
   "description": "A publisher-controlled element that renders on top of buyer creative content within the ad placement. Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
+  "type": "object",
   "properties": {
+    "id": {
+      "type": "string",
+      "description": "Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')"
+    },
+    "description": {
+      "type": "string",
+      "description": "Human-readable explanation of what this overlay is and how buyers should account for it"
+    },
+    "visual": {
+      "type": "object",
+      "description": "Optional visual reference for this overlay element. Useful for creative agents compositing previews and for buyers understanding what will appear over their content. Must include at least one of: url, light, or dark.",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor."
+        },
+        "light": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)"
+        },
+        "dark": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to the overlay graphic for use on dark backgrounds (SVG or PNG)"
+        }
+      },
+      "minProperties": 1,
+      "additionalProperties": false
+    },
     "bounds": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Position and size of the overlay relative to the asset's own top-left corner. See 'unit' for coordinate interpretation.",
       "properties": {
+        "x": {
+          "type": "number",
+          "description": "Horizontal offset from the asset's left edge"
+        },
+        "y": {
+          "type": "number",
+          "description": "Vertical offset from the asset's top edge"
+        },
+        "width": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Width of the overlay"
+        },
         "height": {
-          "description": "Height of the overlay",
+          "type": "number",
           "minimum": 0,
-          "type": "number"
+          "description": "Height of the overlay"
         },
         "unit": {
-          "description": "'px' = absolute pixels from asset top-left. 'fraction' = proportional to asset dimensions (0.0 = edge, 1.0 = opposite edge). 'inches', 'cm', 'mm', 'pt' (1/72 inch) = physical units for print overlays, measured from asset top-left.",
+          "type": "string",
           "enum": [
             "px",
             "fraction",
@@ -22,20 +67,7 @@
             "mm",
             "pt"
           ],
-          "type": "string"
-        },
-        "width": {
-          "description": "Width of the overlay",
-          "minimum": 0,
-          "type": "number"
-        },
-        "x": {
-          "description": "Horizontal offset from the asset's left edge",
-          "type": "number"
-        },
-        "y": {
-          "description": "Vertical offset from the asset's top edge",
-          "type": "number"
+          "description": "'px' = absolute pixels from asset top-left. 'fraction' = proportional to asset dimensions (0.0 = edge, 1.0 = opposite edge). 'inches', 'cm', 'mm', 'pt' (1/72 inch) = physical units for print overlays, measured from asset top-left."
         }
       },
       "required": [
@@ -45,44 +77,12 @@
         "height",
         "unit"
       ],
-      "type": "object"
-    },
-    "description": {
-      "description": "Human-readable explanation of what this overlay is and how buyers should account for it",
-      "type": "string"
-    },
-    "id": {
-      "description": "Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')",
-      "type": "string"
-    },
-    "visual": {
-      "additionalProperties": false,
-      "description": "Optional visual reference for this overlay element. Useful for creative agents compositing previews and for buyers understanding what will appear over their content. Must include at least one of: url, light, or dark.",
-      "minProperties": 1,
-      "properties": {
-        "dark": {
-          "description": "URL to the overlay graphic for use on dark backgrounds (SVG or PNG)",
-          "format": "uri",
-          "type": "string"
-        },
-        "light": {
-          "description": "URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)",
-          "format": "uri",
-          "type": "string"
-        },
-        "url": {
-          "description": "URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor.",
-          "format": "uri",
-          "type": "string"
-        }
-      },
-      "type": "object"
+      "additionalProperties": false
     }
   },
   "required": [
     "id",
     "bounds"
   ],
-  "title": "Overlay",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/package.json b/schemas/cache/core/package.json
index a4abbeb52..1032a96e6 100644
--- a/schemas/cache/core/package.json
+++ b/schemas/cache/core/package.json
@@ -1,149 +1,166 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Package",
   "description": "A specific product within a media buy (line item)",
+  "type": "object",
   "properties": {
-    "bid_price": {
-      "description": "Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
-      "minimum": 0,
-      "type": "number"
+    "package_id": {
+      "type": "string",
+      "description": "Seller's unique identifier for the package"
+    },
+    "product_id": {
+      "type": "string",
+      "description": "ID of the product this package is based on"
     },
     "budget": {
+      "type": "number",
       "description": "Budget allocation for this package in the currency specified by the pricing option",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
-    "canceled": {
-      "default": false,
-      "description": "Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.",
-      "type": "boolean"
+    "pacing": {
+      "$ref": "../enums/pacing.json"
     },
-    "cancellation": {
-      "additionalProperties": false,
-      "description": "Cancellation metadata. Present only when canceled is true.",
-      "properties": {
-        "acknowledged_at": {
-          "description": "ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation.",
-          "format": "date-time",
-          "type": "string"
-        },
-        "canceled_at": {
-          "description": "ISO 8601 timestamp when this package was canceled.",
-          "format": "date-time",
-          "type": "string"
-        },
-        "canceled_by": {
-          "$ref": "../enums/canceled-by.json",
-          "description": "Which party initiated the package cancellation."
-        },
-        "reason": {
-          "description": "Reason the package was canceled.",
-          "maxLength": 500,
-          "type": "string"
-        }
-      },
-      "required": [
-        "canceled_at",
-        "canceled_by"
-      ],
-      "type": "object"
+    "pricing_option_id": {
+      "type": "string",
+      "description": "ID of the selected pricing option from the product's pricing_options array"
+    },
+    "bid_price": {
+      "type": "number",
+      "description": "Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+      "minimum": 0
+    },
+    "price_breakdown": {
+      "description": "Breakdown of the effective price for this package. On fixed-price packages, echoes the pricing option's breakdown. On auction packages, shows the clearing price breakdown including any commission or settlement terms.",
+      "$ref": "../pricing-options/price-breakdown.json"
+    },
+    "impressions": {
+      "type": "number",
+      "description": "Impression goal for this package",
+      "minimum": 0
     },
     "catalogs": {
+      "type": "array",
       "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Echoed from the create_media_buy request.",
       "items": {
         "$ref": "catalog.json"
-      },
-      "type": "array"
+      }
     },
-    "context": {
-      "$ref": "context.json"
-    },
-    "creative_assignments": {
-      "description": "Creative assets assigned to this package",
+    "format_ids": {
+      "type": "array",
+      "description": "Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.",
       "items": {
-        "$ref": "creative-assignment.json"
-      },
-      "type": "array"
-    },
-    "creative_deadline": {
-      "description": "ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies.",
-      "format": "date-time",
-      "type": "string"
+        "$ref": "format-id.json"
+      }
     },
-    "end_time": {
-      "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited.",
-      "format": "date-time",
-      "type": "string"
+    "targeting_overlay": {
+      "$ref": "targeting.json"
     },
-    "ext": {
-      "$ref": "ext.json"
+    "measurement_terms": {
+      "$ref": "measurement-terms.json",
+      "description": "Agreed billing measurement and makegood terms for this package. Reflects what was negotiated \u2014 may differ from the buyer's proposal or the product's defaults. When present, these terms are binding for the package's duration."
     },
-    "format_ids": {
-      "description": "Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.",
+    "performance_standards": {
+      "type": "array",
+      "description": "Agreed performance standards for this package. When any entry specifies a vendor, creatives assigned to this package MUST include corresponding tracker_script or tracker_pixel assets from that vendor.",
       "items": {
-        "$ref": "format-id.json"
+        "$ref": "performance-standard.json"
       },
-      "type": "array"
+      "minItems": 1
+    },
+    "creative_assignments": {
+      "type": "array",
+      "description": "Creative assets assigned to this package",
+      "items": {
+        "$ref": "creative-assignment.json"
+      }
     },
     "format_ids_to_provide": {
+      "type": "array",
       "description": "Format IDs that creative assets will be provided for this package",
       "items": {
         "$ref": "format-id.json"
-      },
-      "type": "array"
-    },
-    "impressions": {
-      "description": "Impression goal for this package",
-      "minimum": 0,
-      "type": "number"
+      }
     },
     "optimization_goals": {
+      "type": "array",
       "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
       "items": {
         "$ref": "optimization-goal.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "pacing": {
-      "$ref": "../enums/pacing.json"
+    "start_time": {
+      "type": "string",
+      "format": "date-time",
+      "not": {
+        "const": "asap"
+      },
+      "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
     },
-    "package_id": {
-      "description": "Seller's unique identifier for the package",
-      "type": "string"
+    "end_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
     },
     "paused": {
-      "default": false,
+      "type": "boolean",
       "description": "Whether this package is paused by the buyer. Paused packages do not deliver impressions. Defaults to false.",
-      "type": "boolean"
+      "default": false
     },
-    "price_breakdown": {
-      "$ref": "../pricing-options/price-breakdown.json",
-      "description": "Breakdown of the effective price for this package. On fixed-price packages, echoes the pricing option's breakdown. On auction packages, shows the clearing price breakdown including any commission or settlement terms."
+    "canceled": {
+      "type": "boolean",
+      "description": "Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.",
+      "default": false
     },
-    "pricing_option_id": {
-      "description": "ID of the selected pricing option from the product's pricing_options array",
-      "type": "string"
+    "cancellation": {
+      "type": "object",
+      "description": "Cancellation metadata. Present only when canceled is true.",
+      "required": [
+        "canceled_at",
+        "canceled_by"
+      ],
+      "properties": {
+        "canceled_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when this package was canceled."
+        },
+        "canceled_by": {
+          "$ref": "../enums/canceled-by.json",
+          "description": "Which party initiated the package cancellation."
+        },
+        "reason": {
+          "type": "string",
+          "description": "Reason the package was canceled.",
+          "maxLength": 500
+        },
+        "acknowledged_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation."
+        }
+      },
+      "additionalProperties": false
     },
-    "product_id": {
-      "description": "ID of the product this package is based on",
-      "type": "string"
+    "agency_estimate_number": {
+      "type": "string",
+      "maxLength": 100,
+      "description": "Agency estimate or authorization number for this package. Echoed from the buyer's request. When present on the package, takes precedence over the media buy-level estimate number."
     },
-    "start_time": {
-      "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited.",
+    "creative_deadline": {
+      "type": "string",
       "format": "date-time",
-      "not": {
-        "const": "asap"
-      },
-      "type": "string"
+      "description": "ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
     },
-    "targeting_overlay": {
-      "$ref": "targeting.json"
+    "context": {
+      "$ref": "context.json"
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "package_id"
   ],
-  "title": "Package",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/pagination-request.json b/schemas/cache/core/pagination-request.json
index fd56f4b3c..3b5510e9b 100644
--- a/schemas/cache/core/pagination-request.json
+++ b/schemas/cache/core/pagination-request.json
@@ -1,20 +1,20 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Pagination Request",
   "description": "Standard cursor-based pagination parameters for list operations",
+  "type": "object",
   "properties": {
-    "cursor": {
-      "description": "Opaque cursor from a previous response to fetch the next page",
-      "type": "string"
-    },
     "max_results": {
-      "default": 50,
-      "description": "Maximum number of items to return per page",
-      "maximum": 100,
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "maximum": 100,
+      "default": 50,
+      "description": "Maximum number of items to return per page"
+    },
+    "cursor": {
+      "type": "string",
+      "description": "Opaque cursor from a previous response to fetch the next page"
     }
   },
-  "title": "Pagination Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/pagination-response.json b/schemas/cache/core/pagination-response.json
index 6f7ae9f5f..f2dfc9d17 100644
--- a/schemas/cache/core/pagination-response.json
+++ b/schemas/cache/core/pagination-response.json
@@ -1,25 +1,25 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Pagination Response",
   "description": "Standard cursor-based pagination metadata for list responses",
+  "type": "object",
   "properties": {
-    "cursor": {
-      "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.",
-      "type": "string"
-    },
     "has_more": {
-      "description": "Whether more results are available beyond this page",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Whether more results are available beyond this page"
+    },
+    "cursor": {
+      "type": "string",
+      "description": "Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true."
     },
     "total_count": {
-      "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this."
     }
   },
   "required": [
     "has_more"
   ],
-  "title": "Pagination Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/performance-feedback.json b/schemas/cache/core/performance-feedback.json
index 1e289867d..88c3b4e92 100644
--- a/schemas/cache/core/performance-feedback.json
+++ b/schemas/cache/core/performance-feedback.json
@@ -1,77 +1,78 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Performance Feedback",
   "description": "Represents performance feedback data for a media buy or package",
+  "type": "object",
   "properties": {
-    "applied_at": {
-      "description": "ISO 8601 timestamp when feedback was applied to optimization algorithms",
-      "format": "date-time",
-      "type": "string"
+    "feedback_id": {
+      "type": "string",
+      "description": "Unique identifier for this performance feedback submission"
     },
-    "creative_id": {
-      "description": "Specific creative asset (if feedback is creative-specific)",
-      "type": "string"
+    "media_buy_id": {
+      "type": "string",
+      "description": "Publisher's media buy identifier"
     },
-    "feedback_id": {
-      "description": "Unique identifier for this performance feedback submission",
-      "type": "string"
+    "package_id": {
+      "type": "string",
+      "description": "Specific package within the media buy (if feedback is package-specific)"
     },
-    "feedback_source": {
-      "$ref": "../enums/feedback-source.json",
-      "description": "Source of the performance data"
+    "creative_id": {
+      "type": "string",
+      "description": "Specific creative asset (if feedback is creative-specific)"
     },
     "measurement_period": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Time period for performance measurement",
       "properties": {
-        "end": {
-          "description": "ISO 8601 end timestamp for measurement period",
+        "start": {
+          "type": "string",
           "format": "date-time",
-          "type": "string"
+          "description": "ISO 8601 start timestamp for measurement period"
         },
-        "start": {
-          "description": "ISO 8601 start timestamp for measurement period",
+        "end": {
+          "type": "string",
           "format": "date-time",
-          "type": "string"
+          "description": "ISO 8601 end timestamp for measurement period"
         }
       },
       "required": [
         "start",
         "end"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "media_buy_id": {
-      "description": "Publisher's media buy identifier",
-      "type": "string"
+    "performance_index": {
+      "type": "number",
+      "description": "Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)",
+      "minimum": 0
     },
     "metric_type": {
       "$ref": "../enums/metric-type.json",
       "description": "The business metric being measured"
     },
-    "package_id": {
-      "description": "Specific package within the media buy (if feedback is package-specific)",
-      "type": "string"
-    },
-    "performance_index": {
-      "description": "Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)",
-      "minimum": 0,
-      "type": "number"
+    "feedback_source": {
+      "$ref": "../enums/feedback-source.json",
+      "description": "Source of the performance data"
     },
     "status": {
+      "type": "string",
       "description": "Processing status of the performance feedback",
       "enum": [
         "accepted",
         "queued",
         "applied",
         "rejected"
-      ],
-      "type": "string"
+      ]
     },
     "submitted_at": {
-      "description": "ISO 8601 timestamp when feedback was submitted",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "ISO 8601 timestamp when feedback was submitted"
+    },
+    "applied_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp when feedback was applied to optimization algorithms"
     }
   },
   "required": [
@@ -84,6 +85,5 @@
     "status",
     "submitted_at"
   ],
-  "title": "Performance Feedback",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/placement-definition.json b/schemas/cache/core/placement-definition.json
index 447848a66..6717fc17f 100644
--- a/schemas/cache/core/placement-definition.json
+++ b/schemas/cache/core/placement-definition.json
@@ -1,80 +1,80 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "anyOf": [
-    {
-      "required": [
-        "property_ids"
-      ]
-    },
-    {
-      "required": [
-        "property_tags"
-      ]
-    }
-  ],
+  "title": "Placement Definition",
   "description": "Canonical placement definition published in a publisher's adagents.json. Defines stable placement IDs that products can reuse and that authorization rules can reference. When a product reuses a registered placement_id, it is referring to this same semantic placement, not inventing a new one with the same ID.",
+  "type": "object",
   "properties": {
-    "collection_ids": {
-      "description": "Optional collection IDs in this adagents.json where this placement is valid. Use to narrow a placement to specific content programs carried on the selected properties.",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
+    "placement_id": {
+      "type": "string",
+      "description": "Stable placement identifier unique within this adagents.json file."
     },
-    "description": {
-      "description": "Description of where and how this placement appears.",
-      "type": "string"
+    "name": {
+      "type": "string",
+      "description": "Human-readable placement name (e.g., 'Homepage Banner', 'Pre-roll', 'Sponsored Listing Slot 1')."
     },
-    "ext": {
-      "$ref": "ext.json"
+    "description": {
+      "type": "string",
+      "description": "Description of where and how this placement appears."
     },
-    "format_ids": {
-      "description": "Optional format IDs supported by this placement across the scoped properties and collections. Lets buyers answer which formats are available on which placements without relying on product-local definitions alone.",
+    "tags": {
+      "type": "array",
+      "description": "Tags for grouping and querying placements across properties and products (e.g., 'homepage', 'native', 'premium', 'pre_roll').",
       "items": {
-        "$ref": "format-id.json"
+        "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "name": {
-      "description": "Human-readable placement name (e.g., 'Homepage Banner', 'Pre-roll', 'Sponsored Listing Slot 1').",
-      "type": "string"
-    },
-    "placement_id": {
-      "description": "Stable placement identifier unique within this adagents.json file.",
-      "type": "string"
+      "uniqueItems": true
     },
     "property_ids": {
+      "type": "array",
       "description": "Property IDs in this adagents.json where this placement can appear.",
       "items": {
         "$ref": "property-id.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "property_tags": {
+      "type": "array",
       "description": "Property tags in this adagents.json where this placement can appear. Useful for network-wide positions such as 'pre_roll' or 'homepage_native_feed'.",
       "items": {
         "$ref": "property-tag.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "tags": {
-      "description": "Tags for grouping and querying placements across properties and products (e.g., 'homepage', 'native', 'premium', 'pre_roll').",
+    "collection_ids": {
+      "type": "array",
+      "description": "Optional collection IDs in this adagents.json where this placement is valid. Use to narrow a placement to specific content programs carried on the selected properties.",
       "items": {
         "type": "string"
       },
+      "minItems": 1
+    },
+    "format_ids": {
       "type": "array",
-      "uniqueItems": true
+      "description": "Optional format IDs supported by this placement across the scoped properties and collections. Lets buyers answer which formats are available on which placements without relying on product-local definitions alone.",
+      "items": {
+        "$ref": "format-id.json"
+      },
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "placement_id",
     "name"
   ],
-  "title": "Placement Definition",
-  "type": "object"
+  "anyOf": [
+    {
+      "required": [
+        "property_ids"
+      ]
+    },
+    {
+      "required": [
+        "property_tags"
+      ]
+    }
+  ],
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/placement.json b/schemas/cache/core/placement.json
index b198e968f..b435eac79 100644
--- a/schemas/cache/core/placement.json
+++ b/schemas/cache/core/placement.json
@@ -1,41 +1,41 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Placement",
   "description": "Represents a specific ad placement within a product's inventory. When the publisher declares a placement registry in adagents.json, products SHOULD reuse those placement_id values. Reusing a registered placement_id preserves the registry's semantic identity; product-level placement objects may narrow format_ids or add operational detail, but SHOULD NOT redefine the placement's meaning incompatibly.",
+  "type": "object",
   "properties": {
-    "description": {
-      "description": "Detailed description of where and how the placement appears",
-      "type": "string"
-    },
-    "format_ids": {
-      "description": "Format IDs supported by this specific placement. Can include: (1) concrete format_ids (fixed dimensions), (2) template format_ids without parameters (accepts any dimensions/duration), or (3) parameterized format_ids (specific dimension/duration constraints).",
-      "items": {
-        "$ref": "format-id.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "placement_id": {
+      "type": "string",
+      "description": "Unique identifier for the placement within the product"
     },
     "name": {
-      "description": "Human-readable name for the placement (e.g., 'Homepage Banner', 'Article Sidebar')",
-      "type": "string"
+      "type": "string",
+      "description": "Human-readable name for the placement (e.g., 'Homepage Banner', 'Article Sidebar')"
     },
-    "placement_id": {
-      "description": "Unique identifier for the placement within the product",
-      "type": "string"
+    "description": {
+      "type": "string",
+      "description": "Detailed description of where and how the placement appears"
     },
     "tags": {
+      "type": "array",
       "description": "Optional tags for grouping placements within a product (e.g., 'homepage', 'native', 'premium'). When the placement_id comes from the publisher registry, these should align with the registry tags unless the product is narrowing scope.",
       "items": {
         "type": "string"
       },
-      "type": "array",
       "uniqueItems": true
+    },
+    "format_ids": {
+      "type": "array",
+      "description": "Format IDs supported by this specific placement. Can include: (1) concrete format_ids (fixed dimensions), (2) template format_ids without parameters (accepts any dimensions/duration), or (3) parameterized format_ids (specific dimension/duration constraints).",
+      "items": {
+        "$ref": "format-id.json"
+      },
+      "minItems": 1
     }
   },
   "required": [
     "placement_id",
     "name"
   ],
-  "title": "Placement",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/planned-delivery.json b/schemas/cache/core/planned-delivery.json
index 070295d3e..af16024ab 100644
--- a/schemas/cache/core/planned-delivery.json
+++ b/schemas/cache/core/planned-delivery.json
@@ -1,83 +1,83 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Planned Delivery",
   "description": "The seller's interpreted delivery parameters for a media buy. Represents what the seller will actually run, which may differ from what the buyer requested (e.g., the seller may apply additional targeting, frequency caps, or adjust geo to match their inventory). Used for authorization verification and audit.",
+  "type": "object",
   "properties": {
-    "audience_summary": {
-      "description": "Human-readable summary of the audience the seller will target.",
-      "type": "string"
-    },
-    "audience_targeting": {
-      "description": "Structured audience targeting the seller will activate. Each entry is either a signal reference or a descriptive criterion. When present, governance agents MUST use this for bias/fairness validation and SHOULD ignore audience_summary for validation purposes. The audience_summary field is a human-readable rendering of this array, not an independent declaration.",
-      "items": {
-        "$ref": "audience-selector.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "channels": {
-      "description": "Channels the seller will deliver on.",
-      "items": {
-        "$ref": "../enums/channels.json"
-      },
-      "type": "array"
-    },
-    "currency": {
-      "description": "ISO 4217 currency code for the budget.",
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "end_time": {
-      "description": "Actual flight end the seller will use.",
-      "format": "date-time",
-      "type": "string"
-    },
-    "enforced_policies": {
-      "description": "Registry policy IDs the seller will enforce for this delivery.",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "frequency_cap": {
-      "$ref": "frequency-cap.json",
-      "description": "Frequency cap the seller will apply."
-    },
     "geo": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Geographic targeting the seller will apply.",
       "properties": {
         "countries": {
-          "description": "ISO 3166-1 alpha-2 country codes where ads will deliver.",
+          "type": "array",
           "items": {
             "type": "string"
           },
-          "type": "array"
+          "description": "ISO 3166-1 alpha-2 country codes where ads will deliver."
         },
         "regions": {
-          "description": "ISO 3166-2 subdivision codes where ads will deliver.",
+          "type": "array",
           "items": {
             "type": "string"
           },
-          "type": "array"
+          "description": "ISO 3166-2 subdivision codes where ads will deliver."
         }
       },
-      "type": "object"
+      "additionalProperties": true
+    },
+    "channels": {
+      "type": "array",
+      "items": {
+        "$ref": "../enums/channels.json"
+      },
+      "description": "Channels the seller will deliver on."
     },
     "start_time": {
-      "description": "Actual flight start the seller will use.",
+      "type": "string",
+      "format": "date-time",
+      "description": "Actual flight start the seller will use."
+    },
+    "end_time": {
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Actual flight end the seller will use."
+    },
+    "frequency_cap": {
+      "$ref": "frequency-cap.json",
+      "description": "Frequency cap the seller will apply."
+    },
+    "audience_summary": {
+      "type": "string",
+      "description": "Human-readable summary of the audience the seller will target."
+    },
+    "audience_targeting": {
+      "type": "array",
+      "description": "Structured audience targeting the seller will activate. Each entry is either a signal reference or a descriptive criterion. When present, governance agents MUST use this for bias/fairness validation and SHOULD ignore audience_summary for validation purposes. The audience_summary field is a human-readable rendering of this array, not an independent declaration.",
+      "items": {
+        "$ref": "audience-selector.json"
+      },
+      "minItems": 1
     },
     "total_budget": {
+      "type": "number",
       "description": "Total budget the seller will deliver against.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
+    },
+    "currency": {
+      "type": "string",
+      "description": "ISO 4217 currency code for the budget.",
+      "pattern": "^[A-Z]{3}$"
+    },
+    "enforced_policies": {
+      "type": "array",
+      "description": "Registry policy IDs the seller will enforce for this delivery.",
+      "items": {
+        "type": "string"
+      }
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
-  "title": "Planned Delivery",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/price.json b/schemas/cache/core/price.json
index 4c578512f..6211442f2 100644
--- a/schemas/cache/core/price.json
+++ b/schemas/cache/core/price.json
@@ -1,58 +1,58 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Price",
   "description": "A monetary amount with currency and optional billing period. Used across catalog item types for product prices, nightly hotel rates, salary ranges, rental costs, and similar monetary values.",
-  "examples": [
-    {
-      "data": {
-        "amount": 29.99,
-        "currency": "USD"
-      },
-      "description": "One-time purchase price"
-    },
-    {
-      "data": {
-        "amount": 189,
-        "currency": "EUR",
-        "period": "night"
-      },
-      "description": "Hotel nightly rate"
-    },
-    {
-      "data": {
-        "amount": 85000,
-        "currency": "USD",
-        "period": "year"
-      },
-      "description": "Annual salary"
-    }
-  ],
+  "type": "object",
   "properties": {
     "amount": {
-      "description": "Monetary amount in the specified currency.",
+      "type": "number",
       "minimum": 0,
-      "type": "number"
+      "description": "Monetary amount in the specified currency."
     },
     "currency": {
-      "description": "ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP').",
+      "type": "string",
       "pattern": "^[A-Z]{3}$",
-      "type": "string"
+      "description": "ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')."
     },
     "period": {
-      "description": "Billing period. 'night' for hotel rates, 'month' or 'year' for salaries and rentals, 'one_time' for purchase prices. Omit when the period is obvious from context (e.g., a vehicle price is always one-time).",
+      "type": "string",
       "enum": [
         "night",
         "month",
         "year",
         "one_time"
       ],
-      "type": "string"
+      "description": "Billing period. 'night' for hotel rates, 'month' or 'year' for salaries and rentals, 'one_time' for purchase prices. Omit when the period is obvious from context (e.g., a vehicle price is always one-time)."
     }
   },
   "required": [
     "amount",
     "currency"
   ],
-  "title": "Price",
-  "type": "object"
+  "additionalProperties": false,
+  "examples": [
+    {
+      "description": "One-time purchase price",
+      "data": {
+        "amount": 29.99,
+        "currency": "USD"
+      }
+    },
+    {
+      "description": "Hotel nightly rate",
+      "data": {
+        "amount": 189,
+        "currency": "EUR",
+        "period": "night"
+      }
+    },
+    {
+      "description": "Annual salary",
+      "data": {
+        "amount": 85000,
+        "currency": "USD",
+        "period": "year"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/pricing-option.json b/schemas/cache/core/pricing-option.json
index adc7f7c80..0961f4dcf 100644
--- a/schemas/cache/core/pricing-option.json
+++ b/schemas/cache/core/pricing-option.json
@@ -1,5 +1,6 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Pricing Option",
   "description": "A pricing model option offered by a publisher for a product. Discriminated by pricing_model field. If fixed_price is present, it's fixed pricing. If absent, it's auction-based (floor_price and price_guidance optional). Bid-based auction models may also include max_bid as a boolean signal to interpret bid_price as a buyer ceiling instead of an exact honored price.",
   "oneOf": [
     {
@@ -29,6 +30,5 @@
     {
       "$ref": "../pricing-options/time-option.json"
     }
-  ],
-  "title": "Pricing Option"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/product-allocation.json b/schemas/cache/core/product-allocation.json
index df5280dc0..9443791d3 100644
--- a/schemas/cache/core/product-allocation.json
+++ b/schemas/cache/core/product-allocation.json
@@ -1,68 +1,68 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Product Allocation",
   "description": "A budget allocation for a specific product within a proposal. Percentages across all allocations in a proposal should sum to 100.",
+  "type": "object",
   "properties": {
+    "product_id": {
+      "type": "string",
+      "description": "ID of the product (must reference a product in the products array)"
+    },
     "allocation_percentage": {
+      "type": "number",
       "description": "Percentage of total budget allocated to this product (0-100)",
-      "maximum": 100,
       "minimum": 0,
-      "type": "number"
-    },
-    "daypart_targets": {
-      "description": "Recommended time windows for this allocation in spot-plan proposals.",
-      "items": {
-        "$ref": "daypart-target.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "end_time": {
-      "description": "Recommended flight end date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range.",
-      "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "forecast": {
-      "$ref": "delivery-forecast.json",
-      "description": "Forecasted delivery metrics for this allocation"
+      "maximum": 100
     },
     "pricing_option_id": {
-      "description": "Recommended pricing option ID from the product's pricing_options array",
-      "type": "string"
-    },
-    "product_id": {
-      "description": "ID of the product (must reference a product in the products array)",
-      "type": "string"
+      "type": "string",
+      "description": "Recommended pricing option ID from the product's pricing_options array"
     },
     "rationale": {
-      "description": "Explanation of why this product and allocation are recommended",
-      "type": "string"
+      "type": "string",
+      "description": "Explanation of why this product and allocation are recommended"
     },
     "sequence": {
+      "type": "integer",
       "description": "Optional ordering hint for multi-line-item plans (1-based)",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "start_time": {
-      "description": "Recommended flight start date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range.",
-      "format": "date-time",
-      "type": "string"
+      "minimum": 1
     },
     "tags": {
+      "type": "array",
       "description": "Categorical tags for this allocation (e.g., 'desktop', 'german', 'mobile') - useful for grouping/filtering allocations by dimension",
       "items": {
         "type": "string"
+      }
+    },
+    "start_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Recommended flight start date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range."
+    },
+    "end_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Recommended flight end date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range."
+    },
+    "daypart_targets": {
+      "type": "array",
+      "description": "Recommended time windows for this allocation in spot-plan proposals.",
+      "items": {
+        "$ref": "daypart-target.json"
       },
-      "type": "array"
+      "minItems": 1
+    },
+    "forecast": {
+      "$ref": "delivery-forecast.json",
+      "description": "Forecasted delivery metrics for this allocation"
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
     "product_id",
     "allocation_percentage"
   ],
-  "title": "Product Allocation",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/product-filters.json b/schemas/cache/core/product-filters.json
index b9f679d54..131338587 100644
--- a/schemas/cache/core/product-filters.json
+++ b/schemas/cache/core/product-filters.json
@@ -1,10 +1,70 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Product Filters",
   "description": "Structured filters for product discovery",
+  "type": "object",
   "properties": {
+    "delivery_type": {
+      "$ref": "../enums/delivery-type.json"
+    },
+    "exclusivity": {
+      "$ref": "../enums/exclusivity.json",
+      "description": "Filter by exclusivity level. Returns products matching the specified exclusivity (e.g., 'exclusive' returns only sole-sponsorship products)."
+    },
+    "is_fixed_price": {
+      "type": "boolean",
+      "description": "Filter by pricing availability: true = products offering fixed pricing (at least one option with fixed_price), false = products offering auction pricing (at least one option without fixed_price). Products with both fixed and auction options match both true and false."
+    },
+    "format_ids": {
+      "type": "array",
+      "description": "Filter by specific format IDs",
+      "items": {
+        "$ref": "format-id.json"
+      },
+      "minItems": 1
+    },
+    "standard_formats_only": {
+      "type": "boolean",
+      "description": "Only return products accepting IAB standard formats"
+    },
+    "min_exposures": {
+      "type": "integer",
+      "description": "Minimum exposures/impressions needed for measurement validity",
+      "minimum": 1
+    },
+    "start_date": {
+      "type": "string",
+      "format": "date",
+      "description": "Campaign start date (ISO 8601 date format: YYYY-MM-DD) for availability checks"
+    },
+    "end_date": {
+      "type": "string",
+      "format": "date",
+      "description": "Campaign end date (ISO 8601 date format: YYYY-MM-DD) for availability checks"
+    },
     "budget_range": {
-      "additionalProperties": true,
+      "type": "object",
+      "description": "Budget range to filter appropriate products",
+      "properties": {
+        "min": {
+          "type": "number",
+          "description": "Minimum budget amount",
+          "minimum": 0
+        },
+        "max": {
+          "type": "number",
+          "description": "Maximum budget amount",
+          "minimum": 0
+        },
+        "currency": {
+          "type": "string",
+          "description": "ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')",
+          "pattern": "^[A-Z]{3}$"
+        }
+      },
+      "required": [
+        "currency"
+      ],
       "anyOf": [
         {
           "required": [
@@ -17,72 +77,272 @@
           ]
         }
       ],
-      "description": "Budget range to filter appropriate products",
-      "properties": {
-        "currency": {
-          "description": "ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')",
-          "pattern": "^[A-Z]{3}$",
-          "type": "string"
-        },
-        "max": {
-          "description": "Maximum budget amount",
-          "minimum": 0,
-          "type": "number"
+      "additionalProperties": true
+    },
+    "countries": {
+      "type": "array",
+      "description": "Filter by country coverage using ISO 3166-1 alpha-2 codes (e.g., ['US', 'CA', 'GB']). Works for all inventory types.",
+      "items": {
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
+      },
+      "minItems": 1
+    },
+    "regions": {
+      "type": "array",
+      "description": "Filter by region coverage using ISO 3166-2 codes (e.g., ['US-NY', 'US-CA', 'GB-SCT']). Use for locally-bound inventory (regional OOH, local TV) where products have region-specific coverage.",
+      "items": {
+        "type": "string",
+        "pattern": "^[A-Z]{2}-[A-Z0-9]+$"
+      },
+      "minItems": 1
+    },
+    "metros": {
+      "type": "array",
+      "description": "Filter by metro coverage for locally-bound inventory (radio, DOOH, local TV). Use when products have DMA/metro-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "system": {
+            "$ref": "../enums/metro-system.json",
+            "description": "Metro classification system"
+          },
+          "code": {
+            "type": "string",
+            "description": "Metro code within the system (e.g., '501' for NYC DMA)"
+          }
         },
-        "min": {
-          "description": "Minimum budget amount",
-          "minimum": 0,
-          "type": "number"
-        }
+        "required": [
+          "system",
+          "code"
+        ],
+        "additionalProperties": false
       },
-      "required": [
-        "currency"
-      ],
-      "type": "object"
+      "minItems": 1
     },
     "channels": {
+      "type": "array",
       "description": "Filter by advertising channels (e.g., ['display', 'ctv', 'dooh'])",
       "items": {
         "$ref": "../enums/channels.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "countries": {
-      "description": "Filter by country coverage using ISO 3166-1 alpha-2 codes (e.g., ['US', 'CA', 'GB']). Works for all inventory types.",
+    "required_axe_integrations": {
+      "type": "array",
+      "description": "Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.",
+      "deprecated": true,
       "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
+        "type": "string",
+        "format": "uri"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "delivery_type": {
-      "$ref": "../enums/delivery-type.json"
+    "trusted_match": {
+      "type": "object",
+      "description": "Filter products by Trusted Match Protocol capabilities. Only products with matching TMP support are returned.",
+      "properties": {
+        "providers": {
+          "type": "array",
+          "description": "Filter to products with specific TMP providers and match types. Each entry identifies a provider by agent_url and optionally requires specific match capabilities. Products must match at least one entry.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "agent_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Provider's agent URL from the registry."
+              },
+              "context_match": {
+                "type": "boolean",
+                "description": "When true, require this provider to support context match."
+              },
+              "identity_match": {
+                "type": "boolean",
+                "description": "When true, require this provider to support identity match."
+              }
+            },
+            "required": [
+              "agent_url"
+            ],
+            "additionalProperties": true
+          },
+          "minItems": 1
+        },
+        "response_types": {
+          "type": "array",
+          "description": "Filter to products supporting specific TMP response types (e.g., 'activation', 'creative', 'catalog_items'). Products must support at least one of the listed types.",
+          "items": {
+            "$ref": "../enums/response-type.json"
+          },
+          "minItems": 1
+        }
+      },
+      "additionalProperties": false
     },
-    "end_date": {
-      "description": "Campaign end date (ISO 8601 date format: YYYY-MM-DD) for availability checks",
-      "format": "date",
-      "type": "string"
+    "required_features": {
+      "$ref": "media-buy-features.json",
+      "description": "Filter to products from sellers supporting specific protocol features. Only features set to true are used for filtering."
     },
-    "exclusivity": {
-      "$ref": "../enums/exclusivity.json",
-      "description": "Filter by exclusivity level. Returns products matching the specified exclusivity (e.g., 'exclusive' returns only sole-sponsorship products)."
+    "required_geo_targeting": {
+      "type": "array",
+      "description": "Filter to products from sellers supporting specific geo targeting capabilities. Each entry specifies a targeting level (country, region, metro, postal_area) and optionally a system for levels that have multiple classification systems.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "level": {
+            "$ref": "../enums/geo-level.json",
+            "description": "Geographic targeting level (country, region, metro, postal_area)"
+          },
+          "system": {
+            "type": "string",
+            "description": "Classification system within the level. Required for metro (e.g., 'nielsen_dma') and postal_area (e.g., 'us_zip'). Not applicable for country/region which use ISO standards."
+          }
+        },
+        "required": [
+          "level"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1
     },
-    "format_ids": {
-      "description": "Filter by specific format IDs",
+    "signal_targeting": {
+      "type": "array",
+      "description": "Filter to products supporting specific signals from data provider catalogs. Products must have the requested signals in their data_provider_signals and signal_targeting_allowed must be true (or all signals requested).",
       "items": {
-        "$ref": "format-id.json"
+        "$ref": "signal-targeting.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "postal_areas": {
+      "type": "array",
+      "description": "Filter by postal area coverage for locally-bound inventory (direct mail, DOOH, local campaigns). Use when products have postal-area-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "system": {
+            "$ref": "../enums/postal-system.json",
+            "description": "Postal code system (e.g., 'us_zip', 'gb_outward')"
+          },
+          "values": {
+            "type": "array",
+            "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "system",
+          "values"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1
     },
     "geo_proximity": {
+      "type": "array",
       "description": "Filter by proximity to geographic points. Returns products with inventory coverage near these locations. Follows the same format as the targeting overlay \u2014 each entry uses exactly one method: travel_time + transport_mode, radius, or geometry. For locally-bound inventory (DOOH, radio), filters to products with coverage in the area. For digital inventory, filters to products from sellers supporting geo_proximity targeting.",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
+        "properties": {
+          "lat": {
+            "type": "number",
+            "minimum": -90,
+            "maximum": 90,
+            "description": "Latitude in decimal degrees (WGS 84)"
+          },
+          "lng": {
+            "type": "number",
+            "minimum": -180,
+            "maximum": 180,
+            "description": "Longitude in decimal degrees (WGS 84)"
+          },
+          "label": {
+            "type": "string",
+            "description": "Human-readable label (e.g., 'D\u00fcsseldorf', 'Heathrow Airport')"
+          },
+          "travel_time": {
+            "type": "object",
+            "description": "Travel time limit for isochrone calculation",
+            "properties": {
+              "value": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Travel time limit"
+              },
+              "unit": {
+                "type": "string",
+                "enum": [
+                  "min",
+                  "hr"
+                ],
+                "description": "Time unit"
+              }
+            },
+            "required": [
+              "value",
+              "unit"
+            ],
+            "additionalProperties": false
+          },
+          "transport_mode": {
+            "$ref": "../enums/transport-mode.json",
+            "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
+          },
+          "radius": {
+            "type": "object",
+            "description": "Simple radius from the point",
+            "properties": {
+              "value": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Radius distance"
+              },
+              "unit": {
+                "$ref": "../enums/distance-unit.json",
+                "description": "Distance unit"
+              }
+            },
+            "required": [
+              "value",
+              "unit"
+            ],
+            "additionalProperties": false
+          },
+          "geometry": {
+            "type": "object",
+            "description": "Pre-computed GeoJSON geometry defining the proximity boundary",
+            "properties": {
+              "type": {
+                "type": "string",
+                "enum": [
+                  "Polygon",
+                  "MultiPolygon"
+                ],
+                "description": "GeoJSON geometry type"
+              },
+              "coordinates": {
+                "type": "array",
+                "description": "GeoJSON coordinates array"
+              }
+            },
+            "required": [
+              "type",
+              "coordinates"
+            ],
+            "additionalProperties": false
+          }
+        },
         "oneOf": [
           {
+            "required": [
+              "lat",
+              "lng",
+              "travel_time",
+              "transport_mode"
+            ],
             "not": {
               "anyOf": [
                 {
@@ -96,15 +356,14 @@
                   ]
                 }
               ]
-            },
+            }
+          },
+          {
             "required": [
               "lat",
               "lng",
-              "travel_time",
-              "transport_mode"
-            ]
-          },
-          {
+              "radius"
+            ],
             "not": {
               "anyOf": [
                 {
@@ -118,14 +377,12 @@
                   ]
                 }
               ]
-            },
-            "required": [
-              "lat",
-              "lng",
-              "radius"
-            ]
+            }
           },
           {
+            "required": [
+              "geometry"
+            ],
             "not": {
               "anyOf": [
                 {
@@ -139,299 +396,50 @@
                   ]
                 }
               ]
-            },
-            "required": [
-              "geometry"
-            ]
+            }
           }
         ],
-        "properties": {
-          "geometry": {
-            "additionalProperties": false,
-            "description": "Pre-computed GeoJSON geometry defining the proximity boundary",
-            "properties": {
-              "coordinates": {
-                "description": "GeoJSON coordinates array",
-                "type": "array"
-              },
-              "type": {
-                "description": "GeoJSON geometry type",
-                "enum": [
-                  "Polygon",
-                  "MultiPolygon"
-                ],
-                "type": "string"
-              }
-            },
-            "required": [
-              "type",
-              "coordinates"
-            ],
-            "type": "object"
-          },
-          "label": {
-            "description": "Human-readable label (e.g., 'D\u00fcsseldorf', 'Heathrow Airport')",
-            "type": "string"
-          },
-          "lat": {
-            "description": "Latitude in decimal degrees (WGS 84)",
-            "maximum": 90,
-            "minimum": -90,
-            "type": "number"
-          },
-          "lng": {
-            "description": "Longitude in decimal degrees (WGS 84)",
-            "maximum": 180,
-            "minimum": -180,
-            "type": "number"
-          },
-          "radius": {
-            "additionalProperties": false,
-            "description": "Simple radius from the point",
-            "properties": {
-              "unit": {
-                "$ref": "../enums/distance-unit.json",
-                "description": "Distance unit"
-              },
-              "value": {
-                "description": "Radius distance",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              }
-            },
-            "required": [
-              "value",
-              "unit"
-            ],
-            "type": "object"
-          },
-          "transport_mode": {
-            "$ref": "../enums/transport-mode.json",
-            "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
-          },
-          "travel_time": {
-            "additionalProperties": false,
-            "description": "Travel time limit for isochrone calculation",
-            "properties": {
-              "unit": {
-                "description": "Time unit",
-                "enum": [
-                  "min",
-                  "hr"
-                ],
-                "type": "string"
-              },
-              "value": {
-                "description": "Travel time limit",
-                "minimum": 1,
-                "type": "number"
-              }
-            },
-            "required": [
-              "value",
-              "unit"
-            ],
-            "type": "object"
-          }
-        },
-        "type": "object"
+        "additionalProperties": true
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "is_fixed_price": {
-      "description": "Filter by pricing availability: true = products offering fixed pricing (at least one option with fixed_price), false = products offering auction pricing (at least one option without fixed_price). Products with both fixed and auction options match both true and false.",
-      "type": "boolean"
+    "required_performance_standards": {
+      "type": "array",
+      "description": "Filter to products that can meet the buyer's performance standard requirements. Each entry specifies a metric, minimum threshold, and optionally a required vendor and standard. Products that cannot meet these thresholds or do not support the specified vendors are excluded. Use this to tell the seller upfront: 'I need DoubleVerify for viewability at 70% MRC.'",
+      "items": {
+        "$ref": "performance-standard.json"
+      },
+      "minItems": 1
     },
     "keywords": {
+      "type": "array",
       "description": "Filter by keyword relevance for search and retail media platforms. Returns products that support keyword targeting for these terms. Allows the sell-side agent to assess keyword availability and recommend appropriate products. Use match_type to indicate the desired precision.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "keyword": {
-            "description": "The keyword to target",
+            "type": "string",
             "minLength": 1,
-            "type": "string"
+            "description": "The keyword to target"
           },
           "match_type": {
-            "default": "broad",
-            "description": "Desired match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly. Defaults to broad.",
+            "type": "string",
             "enum": [
               "broad",
               "phrase",
               "exact"
             ],
-            "type": "string"
+            "default": "broad",
+            "description": "Desired match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly. Defaults to broad."
           }
         },
         "required": [
           "keyword"
         ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "metros": {
-      "description": "Filter by metro coverage for locally-bound inventory (radio, DOOH, local TV). Use when products have DMA/metro-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.",
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "code": {
-            "description": "Metro code within the system (e.g., '501' for NYC DMA)",
-            "type": "string"
-          },
-          "system": {
-            "$ref": "../enums/metro-system.json",
-            "description": "Metro classification system"
-          }
-        },
-        "required": [
-          "system",
-          "code"
-        ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "min_exposures": {
-      "description": "Minimum exposures/impressions needed for measurement validity",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "postal_areas": {
-      "description": "Filter by postal area coverage for locally-bound inventory (direct mail, DOOH, local campaigns). Use when products have postal-area-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.",
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "system": {
-            "$ref": "../enums/postal-system.json",
-            "description": "Postal code system (e.g., 'us_zip', 'gb_outward')"
-          },
-          "values": {
-            "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
-          }
-        },
-        "required": [
-          "system",
-          "values"
-        ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "regions": {
-      "description": "Filter by region coverage using ISO 3166-2 codes (e.g., ['US-NY', 'US-CA', 'GB-SCT']). Use for locally-bound inventory (regional OOH, local TV) where products have region-specific coverage.",
-      "items": {
-        "pattern": "^[A-Z]{2}-[A-Z0-9]+$",
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "required_axe_integrations": {
-      "deprecated": true,
-      "description": "Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.",
-      "items": {
-        "format": "uri",
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "required_features": {
-      "$ref": "media-buy-features.json",
-      "description": "Filter to products from sellers supporting specific protocol features. Only features set to true are used for filtering."
-    },
-    "required_geo_targeting": {
-      "description": "Filter to products from sellers supporting specific geo targeting capabilities. Each entry specifies a targeting level (country, region, metro, postal_area) and optionally a system for levels that have multiple classification systems.",
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "level": {
-            "$ref": "../enums/geo-level.json",
-            "description": "Geographic targeting level (country, region, metro, postal_area)"
-          },
-          "system": {
-            "description": "Classification system within the level. Required for metro (e.g., 'nielsen_dma') and postal_area (e.g., 'us_zip'). Not applicable for country/region which use ISO standards.",
-            "type": "string"
-          }
-        },
-        "required": [
-          "level"
-        ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "signal_targeting": {
-      "description": "Filter to products supporting specific signals from data provider catalogs. Products must have the requested signals in their data_provider_signals and signal_targeting_allowed must be true (or all signals requested).",
-      "items": {
-        "$ref": "signal-targeting.json"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "standard_formats_only": {
-      "description": "Only return products accepting IAB standard formats",
-      "type": "boolean"
-    },
-    "start_date": {
-      "description": "Campaign start date (ISO 8601 date format: YYYY-MM-DD) for availability checks",
-      "format": "date",
-      "type": "string"
-    },
-    "trusted_match": {
-      "additionalProperties": false,
-      "description": "Filter products by Trusted Match Protocol capabilities. Only products with matching TMP support are returned.",
-      "properties": {
-        "providers": {
-          "description": "Filter to products with specific TMP providers and match types. Each entry identifies a provider by agent_url and optionally requires specific match capabilities. Products must match at least one entry.",
-          "items": {
-            "additionalProperties": true,
-            "properties": {
-              "agent_url": {
-                "description": "Provider's agent URL from the registry.",
-                "format": "uri",
-                "type": "string"
-              },
-              "context_match": {
-                "description": "When true, require this provider to support context match.",
-                "type": "boolean"
-              },
-              "identity_match": {
-                "description": "When true, require this provider to support identity match.",
-                "type": "boolean"
-              }
-            },
-            "required": [
-              "agent_url"
-            ],
-            "type": "object"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "response_types": {
-          "description": "Filter to products supporting specific TMP response types (e.g., 'activation', 'creative', 'catalog_items'). Products must support at least one of the listed types.",
-          "items": {
-            "$ref": "../enums/response-type.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        }
-      },
-      "type": "object"
+      "minItems": 1
     }
   },
-  "title": "Product Filters",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/product.json b/schemas/cache/core/product.json
index 346c7a824..5afd61153 100644
--- a/schemas/cache/core/product.json
+++ b/schemas/cache/core/product.json
@@ -397,11 +397,45 @@
                 "type": "boolean",
                 "description": "Whether this provider handles identity match for this product.",
                 "default": false
+              },
+              "countries": {
+                "type": "array",
+                "description": "ISO 3166-1 alpha-2 country codes this provider serves for identity match. The router uses this to select the correct regional provider based on the request's country field. Required when identity_match is true.",
+                "items": {
+                  "type": "string",
+                  "pattern": "^[A-Z]{2}$"
+                },
+                "minItems": 1
+              },
+              "uid_types": {
+                "type": "array",
+                "description": "Identity types this regional provider can resolve. The router filters providers whose uid_types includes the request's uid_type. Required when identity_match is true.",
+                "items": {
+                  "$ref": "../enums/uid-type.json"
+                },
+                "minItems": 1
               }
             },
             "required": [
               "agent_url"
             ],
+            "if": {
+              "properties": {
+                "identity_match": {
+                  "const": true
+                }
+              },
+              "required": [
+                "identity_match"
+              ]
+            },
+            "then": {
+              "required": [
+                "agent_url",
+                "countries",
+                "uid_types"
+              ]
+            },
             "additionalProperties": true
           },
           "minItems": 1
diff --git a/schemas/cache/core/property-id.json b/schemas/cache/core/property-id.json
index e36c082cf..606828884 100644
--- a/schemas/cache/core/property-id.json
+++ b/schemas/cache/core/property-id.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Property ID",
   "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
+  "type": "string",
+  "pattern": "^[a-z0-9_]+$",
   "examples": [
     "cnn_ctv_app",
     "homepage",
     "mobile_ios",
     "instagram"
-  ],
-  "pattern": "^[a-z0-9_]+$",
-  "title": "Property ID",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/property-list-ref.json b/schemas/cache/core/property-list-ref.json
index 7f3748775..fa7d81f48 100644
--- a/schemas/cache/core/property-list-ref.json
+++ b/schemas/cache/core/property-list-ref.json
@@ -1,27 +1,27 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Property List Reference",
   "description": "Reference to an externally managed property list. Enables passing large property sets (50,000+) without embedding them in requests. The receiving agent fetches and caches the list independently.",
+  "type": "object",
   "properties": {
     "agent_url": {
-      "description": "URL of the agent managing the property list",
+      "type": "string",
       "format": "uri",
-      "type": "string"
-    },
-    "auth_token": {
-      "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.",
-      "type": "string"
+      "description": "URL of the agent managing the property list"
     },
     "list_id": {
+      "type": "string",
       "description": "Identifier for the property list within the agent",
-      "minLength": 1,
-      "type": "string"
+      "minLength": 1
+    },
+    "auth_token": {
+      "type": "string",
+      "description": "JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access."
     }
   },
   "required": [
     "agent_url",
     "list_id"
   ],
-  "title": "Property List Reference",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/core/property-tag.json b/schemas/cache/core/property-tag.json
index 02311ad36..11ab36513 100644
--- a/schemas/cache/core/property-tag.json
+++ b/schemas/cache/core/property-tag.json
@@ -1,6 +1,9 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Property Tag",
   "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
+  "type": "string",
+  "pattern": "^[a-z0-9_]+$",
   "examples": [
     "ctv",
     "premium",
@@ -8,8 +11,5 @@
     "sports",
     "meta_network",
     "social_media"
-  ],
-  "pattern": "^[a-z0-9_]+$",
-  "title": "Property Tag",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/property.json b/schemas/cache/core/property.json
index 949f1116e..1046625e7 100644
--- a/schemas/cache/core/property.json
+++ b/schemas/cache/core/property.json
@@ -1,62 +1,63 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Property",
   "description": "An advertising property that can be validated via adagents.json",
+  "type": "object",
   "properties": {
+    "property_id": {
+      "$ref": "property-id.json",
+      "description": "Unique identifier for this property (optional). Enables referencing properties by ID instead of repeating full objects."
+    },
+    "property_type": {
+      "$ref": "../enums/property-type.json",
+      "description": "Type of advertising property"
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable property name"
+    },
     "identifiers": {
+      "type": "array",
       "description": "Array of identifiers for this property",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
           "type": {
             "$ref": "../enums/identifier-types.json",
             "description": "Type of identifier for this property"
           },
           "value": {
-            "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain",
-            "type": "string"
+            "type": "string",
+            "description": "The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
           }
         },
         "required": [
           "type",
           "value"
         ],
-        "type": "object"
+        "additionalProperties": true
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "name": {
-      "description": "Human-readable property name",
-      "type": "string"
-    },
-    "property_id": {
-      "$ref": "property-id.json",
-      "description": "Unique identifier for this property (optional). Enables referencing properties by ID instead of repeating full objects."
+      "minItems": 1
     },
-    "property_type": {
-      "$ref": "../enums/property-type.json",
-      "description": "Type of advertising property"
-    },
-    "publisher_domain": {
-      "description": "Domain where adagents.json should be checked for authorization validation. Optional in adagents.json (file location implies domain).",
-      "type": "string"
+    "tags": {
+      "type": "array",
+      "description": "Tags for categorization and grouping (e.g., network membership, content categories)",
+      "items": {
+        "$ref": "property-tag.json"
+      },
+      "uniqueItems": true
     },
     "supported_channels": {
+      "type": "array",
       "description": "Advertising channels this property supports (e.g., ['display', 'olv', 'social']). Publishers declare which channels their inventory aligns with. Properties may support multiple channels. See the Media Channel Taxonomy for definitions.",
       "items": {
         "$ref": "../enums/channels.json"
       },
-      "type": "array",
       "uniqueItems": true
     },
-    "tags": {
-      "description": "Tags for categorization and grouping (e.g., network membership, content categories)",
-      "items": {
-        "$ref": "property-tag.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+    "publisher_domain": {
+      "type": "string",
+      "description": "Domain where adagents.json should be checked for authorization validation. Optional in adagents.json (file location implies domain)."
     }
   },
   "required": [
@@ -64,6 +65,5 @@
     "name",
     "identifiers"
   ],
-  "title": "Property",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/proposal.json b/schemas/cache/core/proposal.json
index 3a964db43..b56fcf040 100644
--- a/schemas/cache/core/proposal.json
+++ b/schemas/cache/core/proposal.json
@@ -1,81 +1,82 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Proposal",
   "description": "A proposed media plan with budget allocations across products. Represents the publisher's strategic recommendation for how to structure a campaign based on the brief. Proposals are actionable - buyers can execute them directly via create_media_buy by providing the proposal_id.",
+  "type": "object",
   "properties": {
+    "proposal_id": {
+      "type": "string",
+      "description": "Unique identifier for this proposal. Used to execute it via create_media_buy.",
+      "maxLength": 255
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for this media plan proposal",
+      "maxLength": 500
+    },
+    "description": {
+      "type": "string",
+      "description": "Explanation of the proposal strategy and what it achieves",
+      "maxLength": 2000
+    },
     "allocations": {
+      "type": "array",
       "description": "Budget allocations across products. Allocation percentages MUST sum to 100. Publishers are responsible for ensuring the sum equals 100; buyers SHOULD validate this before execution.",
       "items": {
         "$ref": "product-allocation.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "brief_alignment": {
-      "description": "Explanation of how this proposal aligns with the campaign brief",
-      "maxLength": 2000,
-      "type": "string"
-    },
-    "description": {
-      "description": "Explanation of the proposal strategy and what it achieves",
-      "maxLength": 2000,
-      "type": "string"
+    "proposal_status": {
+      "$ref": "../enums/proposal-status.json",
+      "description": "Lifecycle status of this proposal. When absent, the proposal is ready to buy (backward compatible). 'draft' means indicative pricing \u2014 finalize via refine before purchasing. 'committed' means firm pricing with inventory reserved until expires_at."
     },
     "expires_at": {
-      "description": "When this proposal expires and can no longer be executed. For draft proposals, indicates when indicative pricing becomes stale. For committed proposals, indicates when the inventory hold lapses \u2014 the buyer must call create_media_buy before this time.",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "forecast": {
-      "$ref": "delivery-forecast.json",
-      "description": "Aggregate forecasted delivery metrics for the entire proposal. When both proposal-level and allocation-level forecasts are present, the proposal-level forecast is authoritative for total delivery estimation."
+      "description": "When this proposal expires and can no longer be executed. For draft proposals, indicates when indicative pricing becomes stale. For committed proposals, indicates when the inventory hold lapses \u2014 the buyer must call create_media_buy before this time."
     },
     "insertion_order": {
       "$ref": "insertion-order.json",
       "description": "Formal insertion order attached to a committed proposal. Present when the seller requires a signed agreement before the media buy can proceed. The buyer references the io_id in io_acceptance on create_media_buy."
     },
-    "name": {
-      "description": "Human-readable name for this media plan proposal",
-      "maxLength": 500,
-      "type": "string"
-    },
-    "proposal_id": {
-      "description": "Unique identifier for this proposal. Used to execute it via create_media_buy.",
-      "maxLength": 255,
-      "type": "string"
-    },
-    "proposal_status": {
-      "$ref": "../enums/proposal-status.json",
-      "description": "Lifecycle status of this proposal. When absent, the proposal is ready to buy (backward compatible). 'draft' means indicative pricing \u2014 finalize via refine before purchasing. 'committed' means firm pricing with inventory reserved until expires_at."
-    },
     "total_budget_guidance": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Optional budget guidance for this proposal",
       "properties": {
-        "currency": {
-          "description": "ISO 4217 currency code",
-          "type": "string"
-        },
-        "max": {
-          "description": "Maximum budget before diminishing returns",
-          "minimum": 0,
-          "type": "number"
-        },
         "min": {
+          "type": "number",
           "description": "Minimum recommended budget",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
         "recommended": {
+          "type": "number",
           "description": "Recommended budget for optimal performance",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
+        },
+        "max": {
+          "type": "number",
+          "description": "Maximum budget before diminishing returns",
+          "minimum": 0
+        },
+        "currency": {
+          "type": "string",
+          "description": "ISO 4217 currency code"
         }
       },
-      "type": "object"
+      "additionalProperties": true
+    },
+    "brief_alignment": {
+      "type": "string",
+      "description": "Explanation of how this proposal aligns with the campaign brief",
+      "maxLength": 2000
+    },
+    "forecast": {
+      "$ref": "delivery-forecast.json",
+      "description": "Aggregate forecasted delivery metrics for the entire proposal. When both proposal-level and allocation-level forecasts are present, the proposal-level forecast is authoritative for total delivery estimation."
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -83,6 +84,5 @@
     "name",
     "allocations"
   ],
-  "title": "Proposal",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/protocol-envelope.json b/schemas/cache/core/protocol-envelope.json
index 17b3d8c43..5bdbfe2f3 100644
--- a/schemas/cache/core/protocol-envelope.json
+++ b/schemas/cache/core/protocol-envelope.json
@@ -1,98 +1,161 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Protocol Envelope",
   "description": "Standard envelope structure for AdCP task responses. This envelope is added by the protocol layer (MCP, A2A, REST) and wraps the task-specific response payload. Task response schemas should NOT include these fields - they are protocol-level concerns.",
+  "type": "object",
+  "properties": {
+    "context_id": {
+      "type": "string",
+      "description": "Session/conversation identifier for tracking related operations across multiple task invocations. Managed by the protocol layer to maintain conversational context."
+    },
+    "task_id": {
+      "type": "string",
+      "description": "Unique identifier for tracking asynchronous operations. Present when a task requires extended processing time. Used to query task status and retrieve results when complete."
+    },
+    "status": {
+      "$ref": "../enums/task-status.json",
+      "description": "Current task execution state. Indicates whether the task is completed, in progress (working), submitted for async processing, failed, or requires user input. Managed by the protocol layer."
+    },
+    "message": {
+      "type": "string",
+      "description": "Human-readable summary of the task result. Provides natural language explanation of what happened, suitable for display to end users or for AI agent comprehension. Generated by the protocol layer based on the task response."
+    },
+    "timestamp": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp when the response was generated. Useful for debugging, logging, cache validation, and tracking async operation progress."
+    },
+    "replayed": {
+      "type": "boolean",
+      "description": "Set to true when this response is a cached replay returned for an idempotency_key that was already processed. Set to false (or omitted) when the request was executed fresh. Buyers use this to distinguish cached replays from new executions \u2014 matters for billing reconciliation, audit logs, and any downstream system that assumes exactly-once event semantics. Only present on responses to mutating requests that carry idempotency_key.",
+      "default": false
+    },
+    "push_notification_config": {
+      "$ref": "push-notification-config.json",
+      "description": "Push notification configuration for async task updates (A2A and REST protocols). Echoed from the request to confirm webhook settings. Specifies URL, authentication scheme (Bearer or HMAC-SHA256), and credentials. MCP uses progress notifications instead of webhooks."
+    },
+    "governance_context": {
+      "type": "string",
+      "description": "Governance context token issued by a governance agent during check_governance. Buyers attach it to governed purchase requests (media buys, rights acquisitions, signal activations, creative services); sellers persist it and include it on all subsequent governance calls for that action's lifecycle.\n\nValue format: in 3.0 governance agents MUST emit a compact JWS per the AdCP JWS profile (see Security \u2014 Signed Governance Context). Sellers MAY verify; sellers that do not verify MUST persist and forward the token unchanged. In 3.1 all sellers MUST verify. Non-JWS values from pre-3.0 governance agents are deprecated.\n\nThis is the primary correlation key for audit and reporting across the governance lifecycle.",
+      "minLength": 1,
+      "maxLength": 4096,
+      "pattern": "^[\\x20-\\x7E]+$"
+    },
+    "payload": {
+      "type": "object",
+      "description": "The actual task-specific response data. This is the content defined in individual task response schemas (e.g., get-products-response.json, create-media-buy-response.json). Contains only domain-specific data without protocol-level fields.",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "status",
+    "payload"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Synchronous task response with immediate results",
       "data": {
         "context_id": "ctx_abc123",
+        "status": "completed",
         "message": "Found 3 products matching your criteria for CTV inventory in California",
+        "timestamp": "2025-10-14T14:25:30Z",
         "payload": {
           "products": [
             {
-              "description": "Premium connected TV inventory across California",
+              "product_id": "ctv_premium_ca",
               "name": "CTV Premium - California",
+              "description": "Premium connected TV inventory across California",
               "pricing": {
+                "model": "cpm",
                 "amount": 45.0,
-                "currency": "USD",
-                "model": "cpm"
-              },
-              "product_id": "ctv_premium_ca"
+                "currency": "USD"
+              }
             }
           ]
-        },
-        "status": "completed",
-        "timestamp": "2025-10-14T14:25:30Z"
-      },
-      "description": "Synchronous task response with immediate results"
+        }
+      }
     },
     {
+      "description": "Asynchronous task response with pending operation",
       "data": {
         "context_id": "ctx_def456",
+        "task_id": "task_789",
+        "status": "submitted",
         "message": "Media buy creation submitted. Processing will take approximately 5-10 minutes. You'll receive updates via webhook.",
-        "payload": {
-          "account": {
-            "account_id": "acct_123"
-          }
-        },
+        "timestamp": "2025-10-14T14:30:00Z",
         "push_notification_config": {
+          "url": "https://buyer.example.com/webhooks/adcp",
           "authentication": {
-            "credentials": "shared_secret_exchanged_during_onboarding_min_32_chars",
             "schemes": [
               "HMAC-SHA256"
-            ]
-          },
-          "url": "https://buyer.example.com/webhooks/adcp"
+            ],
+            "credentials": "shared_secret_exchanged_during_onboarding_min_32_chars"
+          }
         },
-        "status": "submitted",
-        "task_id": "task_789",
-        "timestamp": "2025-10-14T14:30:00Z"
-      },
-      "description": "Asynchronous task response with pending operation"
+        "payload": {
+          "account": {
+            "account_id": "acct_123"
+          }
+        }
+      }
     },
     {
+      "description": "Task response requiring user input",
       "data": {
         "context_id": "ctx_ghi789",
+        "task_id": "task_101",
+        "status": "input-required",
         "message": "This media buy requires manual approval. Please review the terms and confirm to proceed.",
+        "timestamp": "2025-10-14T14:32:15Z",
         "payload": {
+          "media_buy_id": "mb_123456",
+          "packages": [
+            {
+              "package_id": "pkg_001"
+            }
+          ],
           "errors": [
             {
               "code": "APPROVAL_REQUIRED",
               "message": "Budget exceeds auto-approval threshold",
               "severity": "warning"
             }
-          ],
-          "media_buy_id": "mb_123456",
-          "packages": [
-            {
-              "package_id": "pkg_001"
-            }
           ]
-        },
-        "status": "input-required",
-        "task_id": "task_101",
-        "timestamp": "2025-10-14T14:32:15Z"
-      },
-      "description": "Task response requiring user input"
+        }
+      }
+    },
+    {
+      "description": "Idempotent replay \u2014 same key and payload as a prior request within the replay window",
+      "data": {
+        "context_id": "ctx_abc123",
+        "status": "completed",
+        "message": "Returning cached response for idempotency_key (already processed)",
+        "timestamp": "2025-10-14T14:35:00Z",
+        "replayed": true,
+        "payload": {
+          "media_buy_id": "mb_01HW7J8K9P0Q1R2S3T4U5V6W7X"
+        }
+      }
     },
     {
+      "description": "Failed task response with error details",
       "data": {
         "context_id": "ctx_jkl012",
+        "status": "failed",
         "message": "Unable to create media buy due to invalid targeting parameters",
+        "timestamp": "2025-10-14T14:28:45Z",
         "payload": {
           "errors": [
             {
               "code": "INVALID_TARGETING",
-              "field": "targeting.geo_countries",
               "message": "Geographic targeting codes are invalid",
+              "field": "targeting.geo_countries",
               "severity": "error"
             }
           ]
-        },
-        "status": "failed",
-        "timestamp": "2025-10-14T14:28:45Z"
-      },
-      "description": "Failed task response with error details"
+        }
+      }
     }
   ],
   "notes": [
@@ -103,50 +166,5 @@
     "A2A may represent this via assistant messages with structured data",
     "REST may use HTTP headers for status/task metadata and JSON body for payload",
     "The envelope ensures consistent behavior across all protocol implementations"
-  ],
-  "properties": {
-    "context_id": {
-      "description": "Session/conversation identifier for tracking related operations across multiple task invocations. Managed by the protocol layer to maintain conversational context.",
-      "type": "string"
-    },
-    "governance_context": {
-      "description": "Opaque governance context issued by a governance agent during check_governance. Buyers attach it to media buy requests; sellers persist it and include it on all subsequent governance calls for that media buy's lifecycle. Neither buyers nor sellers interpret this value \u2014 only the governance agent that issued it.",
-      "maxLength": 4096,
-      "minLength": 1,
-      "pattern": "^[\\x20-\\x7E]+$",
-      "type": "string"
-    },
-    "message": {
-      "description": "Human-readable summary of the task result. Provides natural language explanation of what happened, suitable for display to end users or for AI agent comprehension. Generated by the protocol layer based on the task response.",
-      "type": "string"
-    },
-    "payload": {
-      "additionalProperties": true,
-      "description": "The actual task-specific response data. This is the content defined in individual task response schemas (e.g., get-products-response.json, create-media-buy-response.json). Contains only domain-specific data without protocol-level fields.",
-      "type": "object"
-    },
-    "push_notification_config": {
-      "$ref": "push-notification-config.json",
-      "description": "Push notification configuration for async task updates (A2A and REST protocols). Echoed from the request to confirm webhook settings. Specifies URL, authentication scheme (Bearer or HMAC-SHA256), and credentials. MCP uses progress notifications instead of webhooks."
-    },
-    "status": {
-      "$ref": "../enums/task-status.json",
-      "description": "Current task execution state. Indicates whether the task is completed, in progress (working), submitted for async processing, failed, or requires user input. Managed by the protocol layer."
-    },
-    "task_id": {
-      "description": "Unique identifier for tracking asynchronous operations. Present when a task requires extended processing time. Used to query task status and retrieve results when complete.",
-      "type": "string"
-    },
-    "timestamp": {
-      "description": "ISO 8601 timestamp when the response was generated. Useful for debugging, logging, cache validation, and tracking async operation progress.",
-      "format": "date-time",
-      "type": "string"
-    }
-  },
-  "required": [
-    "status",
-    "payload"
-  ],
-  "title": "Protocol Envelope",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/provenance.json b/schemas/cache/core/provenance.json
index 4a8d0783c..c9d8b21bb 100644
--- a/schemas/cache/core/provenance.json
+++ b/schemas/cache/core/provenance.json
@@ -1,66 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Provenance",
   "description": "Declares how content was produced, whether AI was involved, and what disclosure obligations apply. Attaches to creative manifests, individual assets, or content-standards artifacts. When present at multiple levels, the most specific provenance object replaces the inherited one entirely (no field-level merging). Provenance is a claim by the declaring party \u2014 receiving parties should verify claims independently via their own detection tools.",
+  "type": "object",
   "properties": {
+    "digital_source_type": {
+      "$ref": "../enums/digital-source-type.json",
+      "description": "IPTC-aligned classification of AI involvement in producing this content"
+    },
     "ai_tool": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.",
       "properties": {
         "name": {
-          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')",
-          "type": "string"
-        },
-        "provider": {
-          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')",
-          "type": "string"
+          "type": "string",
+          "description": "Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
         },
         "version": {
-          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version.",
-          "type": "string"
+          "type": "string",
+          "description": "Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        },
+        "provider": {
+          "type": "string",
+          "description": "Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
         }
       },
       "required": [
         "name"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "c2pa": {
-      "additionalProperties": true,
-      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
-      "properties": {
-        "manifest_url": {
-          "description": "URL to the C2PA manifest store for this content",
-          "format": "uri",
-          "type": "string"
-        }
-      },
-      "required": [
-        "manifest_url"
+    "human_oversight": {
+      "type": "string",
+      "description": "Level of human involvement in the AI-assisted creation process",
+      "enum": [
+        "none",
+        "prompt_only",
+        "selected",
+        "edited",
+        "directed"
       ],
-      "type": "object"
-    },
-    "created_time": {
-      "description": "When this content was created or generated (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
-    },
-    "declared_at": {
-      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.",
-      "format": "date-time",
-      "type": "string"
+      "enumDescriptions": {
+        "none": "Fully automated with no human involvement in generation",
+        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
+        "selected": "Human selected from multiple AI-generated candidates",
+        "edited": "Human edited or refined AI-generated output",
+        "directed": "Human directed the creative process with AI as an assistive tool"
+      }
     },
     "declared_by": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.",
       "properties": {
         "agent_url": {
-          "description": "URL of the agent or service that declared this provenance",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL of the agent or service that declared this provenance"
         },
         "role": {
-          "description": "Role of the declaring party in the supply chain",
+          "type": "string",
           "enum": [
             "creator",
             "advertiser",
@@ -68,166 +66,168 @@
             "platform",
             "tool"
           ],
+          "description": "Role of the declaring party in the supply chain",
           "enumDescriptions": {
+            "creator": "The party that created or generated the content",
             "advertiser": "The brand or advertiser that owns the content",
             "agency": "Agency acting on behalf of the advertiser",
-            "creator": "The party that created or generated the content",
             "platform": "Ad platform or publisher that processed the content",
             "tool": "Automated tool or service that attached provenance metadata"
-          },
-          "type": "string"
+          }
         }
       },
       "required": [
         "role"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "digital_source_type": {
-      "$ref": "../enums/digital-source-type.json",
-      "description": "IPTC-aligned classification of AI involvement in producing this content"
+    "declared_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance."
+    },
+    "created_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this content was created or generated (ISO 8601)"
+    },
+    "c2pa": {
+      "type": "object",
+      "description": "C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.",
+      "properties": {
+        "manifest_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to the C2PA manifest store for this content"
+        }
+      },
+      "required": [
+        "manifest_url"
+      ],
+      "additionalProperties": true
     },
     "disclosure": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.",
       "properties": {
+        "required": {
+          "type": "boolean",
+          "description": "Whether AI disclosure is required for this content based on applicable regulations"
+        },
         "jurisdictions": {
+          "type": "array",
           "description": "Jurisdictions where disclosure obligations apply",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
               "country": {
-                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')",
-                "type": "string"
-              },
-              "label_text": {
-                "description": "Required disclosure label text for this jurisdiction, in the local language",
-                "type": "string"
+                "type": "string",
+                "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')"
               },
               "region": {
-                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)",
-                "type": "string"
+                "type": "string",
+                "description": "Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"
               },
               "regulation": {
-                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')",
-                "type": "string"
+                "type": "string",
+                "description": "Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+              },
+              "label_text": {
+                "type": "string",
+                "description": "Required disclosure label text for this jurisdiction, in the local language"
               },
               "render_guidance": {
-                "additionalProperties": true,
+                "type": "object",
                 "description": "How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed.",
                 "minProperties": 1,
                 "properties": {
-                  "ext": {
-                    "$ref": "ext.json"
-                  },
-                  "min_duration_ms": {
-                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
-                    "minimum": 1,
-                    "type": "integer"
-                  },
                   "persistence": {
                     "$ref": "../enums/disclosure-persistence.json",
                     "description": "How long the disclosure must persist during content playback or display"
                   },
+                  "min_duration_ms": {
+                    "type": "integer",
+                    "minimum": 1,
+                    "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available."
+                  },
                   "positions": {
+                    "type": "array",
                     "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
                     "items": {
                       "$ref": "../enums/disclosure-position.json"
                     },
                     "minItems": 1,
-                    "type": "array",
                     "uniqueItems": true
+                  },
+                  "ext": {
+                    "$ref": "ext.json"
                   }
                 },
-                "type": "object"
+                "additionalProperties": true
               }
             },
             "required": [
               "country",
               "regulation"
             ],
-            "type": "object"
+            "additionalProperties": true
           },
-          "minItems": 1,
-          "type": "array"
-        },
-        "required": {
-          "description": "Whether AI disclosure is required for this content based on applicable regulations",
-          "type": "boolean"
+          "minItems": 1
         }
       },
       "required": [
         "required"
       ],
-      "type": "object"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "human_oversight": {
-      "description": "Level of human involvement in the AI-assisted creation process",
-      "enum": [
-        "none",
-        "prompt_only",
-        "selected",
-        "edited",
-        "directed"
-      ],
-      "enumDescriptions": {
-        "directed": "Human directed the creative process with AI as an assistive tool",
-        "edited": "Human edited or refined AI-generated output",
-        "none": "Fully automated with no human involvement in generation",
-        "prompt_only": "Human provided the prompt or instructions but did not review outputs",
-        "selected": "Human selected from multiple AI-generated candidates"
-      },
-      "type": "string"
+      "additionalProperties": true
     },
     "verification": {
+      "type": "array",
       "description": "Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim \u2014 verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.",
+      "minItems": 1,
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "confidence": {
-            "description": "Confidence score of the verification result (0.0 to 1.0)",
-            "maximum": 1,
-            "minimum": 0,
-            "type": "number"
+          "verified_by": {
+            "type": "string",
+            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
           },
-          "details_url": {
-            "description": "URL to the full verification report",
-            "format": "uri",
-            "type": "string"
+          "verified_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the verification was performed (ISO 8601)"
           },
           "result": {
-            "description": "Verification outcome",
+            "type": "string",
             "enum": [
               "authentic",
               "ai_generated",
               "ai_modified",
               "inconclusive"
             ],
-            "type": "string"
+            "description": "Verification outcome"
           },
-          "verified_by": {
-            "description": "Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')",
-            "type": "string"
+          "confidence": {
+            "type": "number",
+            "minimum": 0,
+            "maximum": 1,
+            "description": "Confidence score of the verification result (0.0 to 1.0)"
           },
-          "verified_time": {
-            "description": "When the verification was performed (ISO 8601)",
-            "format": "date-time",
-            "type": "string"
+          "details_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "URL to the full verification report"
           }
         },
         "required": [
           "verified_by",
           "result"
         ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
+        "additionalProperties": true
+      }
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
-  "title": "Provenance",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/publisher-property-selector.json b/schemas/cache/core/publisher-property-selector.json
index f4df5fe6c..67e7856c3 100644
--- a/schemas/cache/core/publisher-property-selector.json
+++ b/schemas/cache/core/publisher-property-selector.json
@@ -1,52 +1,53 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Publisher Property Selector",
   "description": "Selects properties from a publisher's adagents.json. Used for both product definitions and agent authorization. Supports three selection patterns: all properties, specific IDs, or by tags.",
   "discriminator": {
     "propertyName": "selection_type"
   },
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Select all properties from the publisher domain",
       "properties": {
         "publisher_domain": {
+          "type": "string",
           "description": "Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "selection_type": {
+          "type": "string",
           "const": "all",
-          "description": "Discriminator indicating all properties from this publisher are included",
-          "type": "string"
+          "description": "Discriminator indicating all properties from this publisher are included"
         }
       },
       "required": [
         "publisher_domain",
         "selection_type"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Select specific properties by ID",
       "properties": {
-        "property_ids": {
-          "description": "Specific property IDs from the publisher's adagents.json",
-          "items": {
-            "$ref": "property-id.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
         "publisher_domain": {
+          "type": "string",
           "description": "Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "selection_type": {
+          "type": "string",
           "const": "by_id",
-          "description": "Discriminator indicating selection by specific property IDs",
-          "type": "string"
+          "description": "Discriminator indicating selection by specific property IDs"
+        },
+        "property_ids": {
+          "type": "array",
+          "description": "Specific property IDs from the publisher's adagents.json",
+          "items": {
+            "$ref": "property-id.json"
+          },
+          "minItems": 1
         }
       },
       "required": [
@@ -54,29 +55,29 @@
         "selection_type",
         "property_ids"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Select properties by tag membership",
       "properties": {
-        "property_tags": {
-          "description": "Property tags from the publisher's adagents.json. Selector covers all properties with these tags",
-          "items": {
-            "$ref": "property-tag.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
         "publisher_domain": {
+          "type": "string",
           "description": "Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "selection_type": {
+          "type": "string",
           "const": "by_tag",
-          "description": "Discriminator indicating selection by property tags",
-          "type": "string"
+          "description": "Discriminator indicating selection by property tags"
+        },
+        "property_tags": {
+          "type": "array",
+          "description": "Property tags from the publisher's adagents.json. Selector covers all properties with these tags",
+          "items": {
+            "$ref": "property-tag.json"
+          },
+          "minItems": 1
         }
       },
       "required": [
@@ -84,8 +85,7 @@
         "selection_type",
         "property_tags"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Publisher Property Selector"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/push-notification-config.json b/schemas/cache/core/push-notification-config.json
index eb53ac39b..41e33f79c 100644
--- a/schemas/cache/core/push-notification-config.json
+++ b/schemas/cache/core/push-notification-config.json
@@ -1,47 +1,47 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Push Notification Config",
   "description": "Webhook configuration for asynchronous task notifications. Uses A2A-compatible PushNotificationConfig structure. Supports Bearer tokens (simple) or HMAC signatures (production-recommended). This schema is designed for composition via allOf - consuming schemas should define their own additionalProperties constraints.",
+  "type": "object",
   "properties": {
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Webhook endpoint URL for task status notifications"
+    },
+    "token": {
+      "type": "string",
+      "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+      "minLength": 16
+    },
     "authentication": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Authentication configuration for webhook delivery (A2A-compatible)",
       "properties": {
-        "credentials": {
-          "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
-          "minLength": 32,
-          "type": "string"
-        },
         "schemes": {
+          "type": "array",
           "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
           "items": {
             "$ref": "../enums/auth-scheme.json"
           },
-          "maxItems": 1,
           "minItems": 1,
-          "type": "array"
+          "maxItems": 1
+        },
+        "credentials": {
+          "type": "string",
+          "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+          "minLength": 32
         }
       },
       "required": [
         "schemes",
         "credentials"
       ],
-      "type": "object"
-    },
-    "token": {
-      "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
-      "minLength": 16,
-      "type": "string"
-    },
-    "url": {
-      "description": "Webhook endpoint URL for task status notifications",
-      "format": "uri",
-      "type": "string"
+      "additionalProperties": false
     }
   },
   "required": [
     "url",
     "authentication"
-  ],
-  "title": "Push Notification Config",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/real-estate-item.json b/schemas/cache/core/real-estate-item.json
index cf9e49c9c..4de0c2773 100644
--- a/schemas/cache/core/real-estate-item.json
+++ b/schemas/cache/core/real-estate-item.json
@@ -1,233 +1,166 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Real Estate Item",
   "description": "A property listing within a real-estate-type catalog. Carries the address, pricing, and specification data that platforms use for real estate ads and dynamic remarketing. Maps to Google DynamicRealEstateAsset, Meta home listing catalogs, and similar formats.",
-  "examples": [
-    {
-      "data": {
-        "address": {
-          "city": "Amsterdam",
-          "country": "NL",
-          "postal_code": "1017 KE",
-          "region": "NL-NH",
-          "street": "Prinsengracht 450"
-        },
-        "area": {
-          "unit": "sqm",
-          "value": 95
-        },
-        "bathrooms": 1,
-        "bedrooms": 3,
-        "image_url": "https://images.acmerealty.com/jordaan-3br/hero.jpg",
-        "listing_id": "ams-jordaan-3br",
-        "listing_type": "for_sale",
-        "location": {
-          "lat": 52.3667,
-          "lng": 4.8833
-        },
-        "neighborhood": "Jordaan",
-        "price": {
-          "amount": 650000,
-          "currency": "EUR"
-        },
-        "property_type": "apartment",
-        "tags": [
-          "canal-view",
-          "renovated"
-        ],
-        "title": "Spacious 3BR Apartment in Jordaan",
-        "url": "https://acmerealty.com/listings/ams-jordaan-3br",
-        "year_built": 1920
-      },
-      "description": "City apartment for sale"
-    },
-    {
-      "data": {
-        "address": {
-          "city": "Brooklyn",
-          "country": "US",
-          "postal_code": "11201",
-          "region": "US-NY",
-          "street": "100 Atlantic Ave"
-        },
-        "bathrooms": 1,
-        "bedrooms": 2,
-        "listing_id": "bklyn-2br-rental",
-        "listing_type": "for_rent",
-        "price": {
-          "amount": 3200,
-          "currency": "USD",
-          "period": "month"
-        },
-        "property_type": "apartment",
-        "tags": [
-          "doorman",
-          "laundry"
-        ],
-        "title": "Modern 2BR in Brooklyn Heights",
-        "url": "https://acmerealty.com/listings/bklyn-2br-rental"
-      },
-      "description": "Suburban rental"
-    }
-  ],
+  "type": "object",
   "properties": {
+    "listing_id": {
+      "type": "string",
+      "description": "Unique identifier for this property listing."
+    },
+    "title": {
+      "type": "string",
+      "description": "Listing title (e.g., 'Spacious 3BR Apartment in Jordaan')."
+    },
     "address": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Property address.",
       "properties": {
+        "street": {
+          "type": "string",
+          "description": "Street address."
+        },
         "city": {
-          "description": "City name.",
-          "type": "string"
+          "type": "string",
+          "description": "City name."
         },
-        "country": {
-          "description": "ISO 3166-1 alpha-2 country code.",
-          "pattern": "^[A-Z]{2}$",
-          "type": "string"
+        "region": {
+          "type": "string",
+          "description": "State, province, or region."
         },
         "postal_code": {
-          "description": "Postal or ZIP code.",
-          "type": "string"
+          "type": "string",
+          "description": "Postal or ZIP code."
         },
-        "region": {
-          "description": "State, province, or region.",
-          "type": "string"
-        },
-        "street": {
-          "description": "Street address.",
-          "type": "string"
+        "country": {
+          "type": "string",
+          "pattern": "^[A-Z]{2}$",
+          "description": "ISO 3166-1 alpha-2 country code."
         }
       },
-      "type": "object"
+      "additionalProperties": false
+    },
+    "price": {
+      "$ref": "price.json",
+      "description": "Property price or rental rate. Use period 'month' for rentals."
+    },
+    "property_type": {
+      "type": "string",
+      "enum": [
+        "house",
+        "apartment",
+        "condo",
+        "townhouse",
+        "land",
+        "commercial"
+      ],
+      "description": "Type of property."
+    },
+    "listing_type": {
+      "type": "string",
+      "enum": [
+        "for_sale",
+        "for_rent"
+      ],
+      "description": "Whether the property is for sale or rent."
+    },
+    "bedrooms": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of bedrooms."
+    },
+    "bathrooms": {
+      "type": "number",
+      "minimum": 0,
+      "description": "Number of bathrooms (e.g., 2.5 for two full and one half bath)."
     },
     "area": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Property size.",
       "properties": {
+        "value": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Area value."
+        },
         "unit": {
-          "description": "Area unit.",
+          "type": "string",
           "enum": [
             "sqft",
             "sqm"
           ],
-          "type": "string"
-        },
-        "value": {
-          "description": "Area value.",
-          "minimum": 0,
-          "type": "number"
+          "description": "Area unit."
         }
       },
       "required": [
         "value",
         "unit"
       ],
-      "type": "object"
-    },
-    "assets": {
-      "description": "Typed creative asset pools for this property listing. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior/interior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-      "items": {
-        "$ref": "offering-asset-group.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "bathrooms": {
-      "description": "Number of bathrooms (e.g., 2.5 for two full and one half bath).",
-      "minimum": 0,
-      "type": "number"
-    },
-    "bedrooms": {
-      "description": "Number of bedrooms.",
-      "minimum": 0,
-      "type": "integer"
+      "additionalProperties": false
     },
     "description": {
-      "description": "Property description.",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "image_url": {
-      "description": "Primary property image URL.",
-      "format": "uri",
-      "type": "string"
-    },
-    "listing_id": {
-      "description": "Unique identifier for this property listing.",
-      "type": "string"
-    },
-    "listing_type": {
-      "description": "Whether the property is for sale or rent.",
-      "enum": [
-        "for_sale",
-        "for_rent"
-      ],
-      "type": "string"
+      "type": "string",
+      "description": "Property description."
     },
     "location": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Geographic coordinates of the property.",
       "properties": {
         "lat": {
-          "description": "Latitude in decimal degrees (WGS 84).",
-          "maximum": 90,
+          "type": "number",
           "minimum": -90,
-          "type": "number"
+          "maximum": 90,
+          "description": "Latitude in decimal degrees (WGS 84)."
         },
         "lng": {
-          "description": "Longitude in decimal degrees (WGS 84).",
-          "maximum": 180,
+          "type": "number",
           "minimum": -180,
-          "type": "number"
+          "maximum": 180,
+          "description": "Longitude in decimal degrees (WGS 84)."
         }
       },
       "required": [
         "lat",
         "lng"
       ],
-      "type": "object"
+      "additionalProperties": false
     },
-    "neighborhood": {
-      "description": "Neighborhood or area name.",
-      "type": "string"
+    "image_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Primary property image URL."
     },
-    "price": {
-      "$ref": "price.json",
-      "description": "Property price or rental rate. Use period 'month' for rentals."
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Listing page URL."
     },
-    "property_type": {
-      "description": "Type of property.",
-      "enum": [
-        "house",
-        "apartment",
-        "condo",
-        "townhouse",
-        "land",
-        "commercial"
-      ],
-      "type": "string"
+    "neighborhood": {
+      "type": "string",
+      "description": "Neighborhood or area name."
+    },
+    "year_built": {
+      "type": "integer",
+      "description": "Year the property was built."
     },
     "tags": {
+      "type": "array",
       "description": "Tags for filtering (e.g., 'garden', 'parking', 'renovated', 'waterfront').",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "title": {
-      "description": "Listing title (e.g., 'Spacious 3BR Apartment in Jordaan').",
-      "type": "string"
+      "minItems": 1
     },
-    "url": {
-      "description": "Listing page URL.",
-      "format": "uri",
-      "type": "string"
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this property listing. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior/interior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
     },
-    "year_built": {
-      "description": "Year the property was built.",
-      "type": "integer"
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -235,6 +168,73 @@
     "title",
     "address"
   ],
-  "title": "Real Estate Item",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "City apartment for sale",
+      "data": {
+        "listing_id": "ams-jordaan-3br",
+        "title": "Spacious 3BR Apartment in Jordaan",
+        "address": {
+          "street": "Prinsengracht 450",
+          "city": "Amsterdam",
+          "region": "NL-NH",
+          "postal_code": "1017 KE",
+          "country": "NL"
+        },
+        "price": {
+          "amount": 650000,
+          "currency": "EUR"
+        },
+        "property_type": "apartment",
+        "listing_type": "for_sale",
+        "bedrooms": 3,
+        "bathrooms": 1,
+        "area": {
+          "value": 95,
+          "unit": "sqm"
+        },
+        "location": {
+          "lat": 52.3667,
+          "lng": 4.8833
+        },
+        "image_url": "https://images.acmerealty.com/jordaan-3br/hero.jpg",
+        "url": "https://acmerealty.com/listings/ams-jordaan-3br",
+        "neighborhood": "Jordaan",
+        "year_built": 1920,
+        "tags": [
+          "canal-view",
+          "renovated"
+        ]
+      }
+    },
+    {
+      "description": "Suburban rental",
+      "data": {
+        "listing_id": "bklyn-2br-rental",
+        "title": "Modern 2BR in Brooklyn Heights",
+        "address": {
+          "street": "100 Atlantic Ave",
+          "city": "Brooklyn",
+          "region": "US-NY",
+          "postal_code": "11201",
+          "country": "US"
+        },
+        "price": {
+          "amount": 3200,
+          "currency": "USD",
+          "period": "month"
+        },
+        "property_type": "apartment",
+        "listing_type": "for_rent",
+        "bedrooms": 2,
+        "bathrooms": 1,
+        "url": "https://acmerealty.com/listings/bklyn-2br-rental",
+        "tags": [
+          "doorman",
+          "laundry"
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/reference-asset.json b/schemas/cache/core/reference-asset.json
index d539b0948..c96650c39 100644
--- a/schemas/cache/core/reference-asset.json
+++ b/schemas/cache/core/reference-asset.json
@@ -1,14 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Reference Asset",
   "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
+  "type": "object",
   "properties": {
-    "description": {
-      "description": "Human-readable description of the asset and how it should inform creative generation",
-      "type": "string"
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to the reference asset (image, video, or document)"
     },
     "role": {
-      "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative",
+      "type": "string",
       "enum": [
         "style_reference",
         "product_shot",
@@ -18,18 +20,16 @@
         "strategy_doc",
         "storyboard"
       ],
-      "type": "string"
+      "description": "How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative"
     },
-    "url": {
-      "description": "URL to the reference asset (image, video, or document)",
-      "format": "uri",
-      "type": "string"
+    "description": {
+      "type": "string",
+      "description": "Human-readable description of the asset and how it should inform creative generation"
     }
   },
   "required": [
     "url",
     "role"
   ],
-  "title": "Reference Asset",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/reporting-capabilities.json b/schemas/cache/core/reporting-capabilities.json
index ca3703224..e32ba6cfe 100644
--- a/schemas/cache/core/reporting-capabilities.json
+++ b/schemas/cache/core/reporting-capabilities.json
@@ -1,98 +1,108 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Reporting Capabilities",
   "description": "Reporting capabilities available for a product",
+  "type": "object",
   "properties": {
-    "available_metrics": {
-      "description": "Metrics available in reporting. Impressions and spend are always implicitly included. When a creative format declares reported_metrics, buyers receive the intersection of these product-level metrics and the format's reported_metrics.",
-      "examples": [
-        [
-          "impressions",
-          "spend",
-          "clicks",
-          "video_completions"
-        ],
-        [
-          "impressions",
-          "spend",
-          "conversions"
-        ]
-      ],
-      "items": {
-        "$ref": "../enums/available-metric.json"
-      },
-      "type": "array",
-      "uniqueItems": true
-    },
     "available_reporting_frequencies": {
+      "type": "array",
       "description": "Supported reporting frequency options",
       "items": {
         "$ref": "../enums/reporting-frequency.json"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     },
-    "date_range_support": {
-      "default": "date_range",
-      "description": "Whether delivery data can be filtered to arbitrary date ranges. 'date_range' means the platform supports start_date/end_date parameters. 'lifetime_only' means the platform returns campaign lifetime totals and date range parameters are not accepted.",
-      "enum": [
-        "date_range",
-        "lifetime_only"
-      ],
-      "type": "string"
-    },
     "expected_delay_minutes": {
+      "type": "integer",
       "description": "Expected delay in minutes before reporting data becomes available (e.g., 240 for 4-hour delay)",
+      "minimum": 0,
       "examples": [
         240,
         300,
         1440
-      ],
-      "minimum": 0,
-      "type": "integer"
+      ]
     },
-    "supports_audience_breakdown": {
-      "description": "Whether this product supports audience segment breakdowns in delivery reporting (by_audience within by_package)",
-      "type": "boolean"
+    "timezone": {
+      "type": "string",
+      "description": "Timezone for reporting periods. Use 'UTC' or IANA timezone (e.g., 'America/New_York'). Critical for daily/monthly frequency alignment.",
+      "examples": [
+        "UTC",
+        "America/New_York",
+        "Europe/London",
+        "America/Los_Angeles"
+      ]
     },
-    "supports_creative_breakdown": {
-      "description": "Whether this product supports creative-level metric breakdowns in delivery reporting (by_creative within by_package)",
-      "type": "boolean"
+    "supports_webhooks": {
+      "type": "boolean",
+      "description": "Whether this product supports webhook-based reporting notifications"
     },
-    "supports_device_platform_breakdown": {
-      "description": "Whether this product supports device platform breakdowns in delivery reporting (by_device_platform within by_package)",
-      "type": "boolean"
+    "available_metrics": {
+      "type": "array",
+      "description": "Metrics available in reporting. Impressions and spend are always implicitly included. When a creative format declares reported_metrics, buyers receive the intersection of these product-level metrics and the format's reported_metrics.",
+      "items": {
+        "$ref": "../enums/available-metric.json"
+      },
+      "uniqueItems": true,
+      "examples": [
+        [
+          "impressions",
+          "spend",
+          "clicks",
+          "video_completions"
+        ],
+        [
+          "impressions",
+          "spend",
+          "conversions"
+        ]
+      ]
     },
-    "supports_device_type_breakdown": {
-      "description": "Whether this product supports device type breakdowns in delivery reporting (by_device_type within by_package)",
-      "type": "boolean"
+    "supports_creative_breakdown": {
+      "type": "boolean",
+      "description": "Whether this product supports creative-level metric breakdowns in delivery reporting (by_creative within by_package)"
+    },
+    "supports_keyword_breakdown": {
+      "type": "boolean",
+      "description": "Whether this product supports keyword-level metric breakdowns in delivery reporting (by_keyword within by_package)"
     },
     "supports_geo_breakdown": {
       "$ref": "geo-breakdown-support.json",
       "description": "Geographic breakdown support for this product. Declares which geo levels and systems are available for by_geo reporting within by_package."
     },
-    "supports_keyword_breakdown": {
-      "description": "Whether this product supports keyword-level metric breakdowns in delivery reporting (by_keyword within by_package)",
-      "type": "boolean"
+    "supports_device_type_breakdown": {
+      "type": "boolean",
+      "description": "Whether this product supports device type breakdowns in delivery reporting (by_device_type within by_package)"
     },
-    "supports_placement_breakdown": {
-      "description": "Whether this product supports placement breakdowns in delivery reporting (by_placement within by_package)",
-      "type": "boolean"
+    "supports_device_platform_breakdown": {
+      "type": "boolean",
+      "description": "Whether this product supports device platform breakdowns in delivery reporting (by_device_platform within by_package)"
     },
-    "supports_webhooks": {
-      "description": "Whether this product supports webhook-based reporting notifications",
-      "type": "boolean"
+    "supports_audience_breakdown": {
+      "type": "boolean",
+      "description": "Whether this product supports audience segment breakdowns in delivery reporting (by_audience within by_package)"
     },
-    "timezone": {
-      "description": "Timezone for reporting periods. Use 'UTC' or IANA timezone (e.g., 'America/New_York'). Critical for daily/monthly frequency alignment.",
-      "examples": [
-        "UTC",
-        "America/New_York",
-        "Europe/London",
-        "America/Los_Angeles"
+    "supports_placement_breakdown": {
+      "type": "boolean",
+      "description": "Whether this product supports placement breakdowns in delivery reporting (by_placement within by_package)"
+    },
+    "date_range_support": {
+      "type": "string",
+      "enum": [
+        "date_range",
+        "lifetime_only"
       ],
-      "type": "string"
+      "description": "Whether delivery data can be filtered to arbitrary date ranges. 'date_range' means the platform supports start_date/end_date parameters. 'lifetime_only' means the platform returns campaign lifetime totals and date range parameters are not accepted.",
+      "default": "date_range"
+    },
+    "measurement_windows": {
+      "type": "array",
+      "description": "Measurement maturation stages available for this product. Used by any channel where billing-grade data is produced in phases rather than arriving final on day one. Examples: broadcast/linear TV (Live \u2192 C3 \u2192 C7 DVR accumulation), DOOH (tentative plays \u2192 post-IVT/fraud-check final), digital with IVT filtering (raw \u2192 GIVT filtered \u2192 SIVT filtered), podcast (7-day downloads \u2192 30-day downloads). Each window defines an accumulation period and expected data availability. When present, delivery reports reference a specific window_id. Sellers whose data is final on first delivery typically omit this.",
+      "items": {
+        "$ref": "measurement-window.json"
+      },
+      "minItems": 1,
+      "uniqueItems": true
     }
   },
   "required": [
@@ -103,6 +113,5 @@
     "available_metrics",
     "date_range_support"
   ],
-  "title": "Reporting Capabilities",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/reporting-webhook.json b/schemas/cache/core/reporting-webhook.json
index ff3f0736d..1aa34745d 100644
--- a/schemas/cache/core/reporting-webhook.json
+++ b/schemas/cache/core/reporting-webhook.json
@@ -1,59 +1,60 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Reporting Webhook",
   "description": "Webhook configuration for automated reporting delivery. Configures where and how campaign performance reports are sent.",
+  "type": "object",
   "properties": {
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Webhook endpoint URL for reporting notifications"
+    },
+    "token": {
+      "type": "string",
+      "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+      "minLength": 16
+    },
     "authentication": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Authentication configuration for webhook delivery (A2A-compatible)",
       "properties": {
-        "credentials": {
-          "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
-          "minLength": 32,
-          "type": "string"
-        },
         "schemes": {
+          "type": "array",
           "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
           "items": {
             "$ref": "../enums/auth-scheme.json"
           },
-          "maxItems": 1,
           "minItems": 1,
-          "type": "array"
+          "maxItems": 1
+        },
+        "credentials": {
+          "type": "string",
+          "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+          "minLength": 32
         }
       },
       "required": [
         "schemes",
         "credentials"
       ],
-      "type": "object"
+      "additionalProperties": false
     },
     "reporting_frequency": {
-      "description": "Frequency for automated reporting delivery. Must be supported by all products in the media buy.",
+      "type": "string",
       "enum": [
         "hourly",
         "daily",
         "monthly"
       ],
-      "type": "string"
+      "description": "Frequency for automated reporting delivery. Must be supported by all products in the media buy."
     },
     "requested_metrics": {
+      "type": "array",
       "description": "Optional list of metrics to include in webhook notifications. If omitted, all available metrics are included. Must be subset of product's available_metrics.",
       "items": {
         "$ref": "../enums/available-metric.json"
       },
-      "type": "array",
       "uniqueItems": true
-    },
-    "token": {
-      "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
-      "minLength": 16,
-      "type": "string"
-    },
-    "url": {
-      "description": "Webhook endpoint URL for reporting notifications",
-      "format": "uri",
-      "type": "string"
     }
   },
   "required": [
@@ -61,6 +62,5 @@
     "authentication",
     "reporting_frequency"
   ],
-  "title": "Reporting Webhook",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/asset-requirements.json b/schemas/cache/core/requirements/asset-requirements.json
index 71c62ed42..b0fbad15c 100644
--- a/schemas/cache/core/requirements/asset-requirements.json
+++ b/schemas/cache/core/requirements/asset-requirements.json
@@ -1,5 +1,7 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Asset Requirements",
+  "description": "Technical requirements for creative assets. The applicable schema is determined by the sibling asset_type field.",
   "anyOf": [
     {
       "$ref": "image-asset-requirements.json"
@@ -37,7 +39,5 @@
     {
       "$ref": "webhook-asset-requirements.json"
     }
-  ],
-  "description": "Technical requirements for creative assets. The applicable schema is determined by the sibling asset_type field.",
-  "title": "Asset Requirements"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/audio-asset-requirements.json b/schemas/cache/core/requirements/audio-asset-requirements.json
index 2d0360879..a9fb64c98 100644
--- a/schemas/cache/core/requirements/audio-asset-requirements.json
+++ b/schemas/cache/core/requirements/audio-asset-requirements.json
@@ -1,67 +1,67 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Audio Asset Requirements",
   "description": "Requirements for audio creative assets.",
+  "type": "object",
   "properties": {
-    "channels": {
-      "description": "Accepted audio channel configurations",
-      "items": {
-        "enum": [
-          "mono",
-          "stereo"
-        ],
-        "type": "string"
-      },
-      "type": "array"
+    "min_duration_ms": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Minimum duration in milliseconds"
+    },
+    "max_duration_ms": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum duration in milliseconds"
     },
     "formats": {
-      "description": "Accepted audio file formats",
+      "type": "array",
       "items": {
+        "type": "string",
         "enum": [
           "mp3",
           "aac",
           "wav",
           "ogg",
           "flac"
-        ],
-        "type": "string"
+        ]
       },
-      "type": "array"
+      "description": "Accepted audio file formats"
     },
-    "max_bitrate_kbps": {
-      "description": "Maximum audio bitrate in kilobits per second",
+    "max_file_size_kb": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum file size in kilobytes"
     },
-    "max_duration_ms": {
-      "description": "Maximum duration in milliseconds",
-      "minimum": 1,
-      "type": "integer"
+    "sample_rates": {
+      "type": "array",
+      "items": {
+        "type": "integer",
+        "minimum": 1
+      },
+      "description": "Accepted sample rates in Hz (e.g., [44100, 48000])"
     },
-    "max_file_size_kb": {
-      "description": "Maximum file size in kilobytes",
-      "minimum": 1,
-      "type": "integer"
+    "channels": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "enum": [
+          "mono",
+          "stereo"
+        ]
+      },
+      "description": "Accepted audio channel configurations"
     },
     "min_bitrate_kbps": {
-      "description": "Minimum audio bitrate in kilobits per second",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Minimum audio bitrate in kilobits per second"
     },
-    "min_duration_ms": {
-      "description": "Minimum duration in milliseconds",
+    "max_bitrate_kbps": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
-    },
-    "sample_rates": {
-      "description": "Accepted sample rates in Hz (e.g., [44100, 48000])",
-      "items": {
-        "minimum": 1,
-        "type": "integer"
-      },
-      "type": "array"
+      "description": "Maximum audio bitrate in kilobits per second"
     }
   },
-  "title": "Audio Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/catalog-field-binding.json b/schemas/cache/core/requirements/catalog-field-binding.json
index 66338b3c0..454457554 100644
--- a/schemas/cache/core/requirements/catalog-field-binding.json
+++ b/schemas/cache/core/requirements/catalog-field-binding.json
@@ -1,121 +1,63 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Catalog Field Binding",
+  "description": "Maps a format template slot to a catalog item field or typed asset pool. The 'kind' field identifies the binding variant. All bindings are optional \u2014 agents can still infer mappings without them.",
   "definitions": {
-    "AssetPoolBinding": {
-      "additionalProperties": true,
-      "description": "Maps an individual format asset to a typed asset pool on the catalog item (e.g., images_landscape, images_vertical, logo). The format slot receives the first item in the pool.",
+    "ScalarBinding": {
+      "type": "object",
+      "description": "Maps an individual format asset to a catalog item field via dot-notation path.",
       "properties": {
-        "asset_group_id": {
-          "description": "The asset_group_id on the catalog item's assets array to pull from (e.g., 'images_landscape', 'images_vertical', 'logo').",
-          "type": "string"
+        "kind": {
+          "type": "string",
+          "const": "scalar"
         },
         "asset_id": {
-          "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to.",
-          "type": "string"
+          "type": "string",
+          "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
+        },
+        "catalog_field": {
+          "type": "string",
+          "description": "Dot-notation path to the field on the catalog item (e.g., 'name', 'price.amount', 'location.city')."
         },
         "ext": {
           "$ref": "../../core/ext.json"
-        },
-        "kind": {
-          "const": "asset_pool",
-          "type": "string"
         }
       },
       "required": [
         "kind",
         "asset_id",
-        "asset_group_id"
+        "catalog_field"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "ScalarBinding": {
-      "additionalProperties": true,
-      "description": "Maps an individual format asset to a catalog item field via dot-notation path.",
+    "AssetPoolBinding": {
+      "type": "object",
+      "description": "Maps an individual format asset to a typed asset pool on the catalog item (e.g., images_landscape, images_vertical, logo). The format slot receives the first item in the pool.",
       "properties": {
+        "kind": {
+          "type": "string",
+          "const": "asset_pool"
+        },
         "asset_id": {
-          "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to.",
-          "type": "string"
+          "type": "string",
+          "description": "The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
         },
-        "catalog_field": {
-          "description": "Dot-notation path to the field on the catalog item (e.g., 'name', 'price.amount', 'location.city').",
-          "type": "string"
+        "asset_group_id": {
+          "type": "string",
+          "description": "The asset_group_id on the catalog item's assets array to pull from (e.g., 'images_landscape', 'images_vertical', 'logo')."
         },
         "ext": {
           "$ref": "../../core/ext.json"
-        },
-        "kind": {
-          "const": "scalar",
-          "type": "string"
         }
       },
       "required": [
         "kind",
         "asset_id",
-        "catalog_field"
+        "asset_group_id"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
   },
-  "description": "Maps a format template slot to a catalog item field or typed asset pool. The 'kind' field identifies the binding variant. All bindings are optional \u2014 agents can still infer mappings without them.",
-  "examples": [
-    {
-      "data": {
-        "asset_id": "headline",
-        "catalog_field": "name",
-        "kind": "scalar"
-      },
-      "description": "Scalar binding \u2014 hotel name to headline slot"
-    },
-    {
-      "data": {
-        "asset_id": "price_badge",
-        "catalog_field": "price.amount",
-        "kind": "scalar"
-      },
-      "description": "Scalar binding \u2014 nested field (nightly rate)"
-    },
-    {
-      "data": {
-        "asset_group_id": "images_landscape",
-        "asset_id": "hero_image",
-        "kind": "asset_pool"
-      },
-      "description": "Asset pool binding \u2014 hero image from landscape pool"
-    },
-    {
-      "data": {
-        "asset_group_id": "images_vertical",
-        "asset_id": "snap_background",
-        "kind": "asset_pool"
-      },
-      "description": "Asset pool binding \u2014 Snap vertical background from vertical pool"
-    },
-    {
-      "data": {
-        "catalog_item": true,
-        "format_group_id": "slide",
-        "kind": "catalog_group",
-        "per_item_bindings": [
-          {
-            "asset_id": "title",
-            "catalog_field": "name",
-            "kind": "scalar"
-          },
-          {
-            "asset_id": "price",
-            "catalog_field": "price.amount",
-            "kind": "scalar"
-          },
-          {
-            "asset_group_id": "images_landscape",
-            "asset_id": "image",
-            "kind": "asset_pool"
-          }
-        ]
-      },
-      "description": "Catalog group binding \u2014 carousel where each slide is one hotel"
-    }
-  ],
   "oneOf": [
     {
       "$ref": "#/definitions/ScalarBinding"
@@ -124,26 +66,24 @@
       "$ref": "#/definitions/AssetPoolBinding"
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "A format repeatable_group where each repetition corresponds to one catalog item. Iterates the group over catalog items in catalog item order.",
       "properties": {
-        "catalog_item": {
-          "const": true,
-          "description": "Each repetition of the format's repeatable_group maps to one item from the catalog.",
-          "type": "boolean"
-        },
-        "ext": {
-          "$ref": "../../core/ext.json"
+        "kind": {
+          "type": "string",
+          "const": "catalog_group"
         },
         "format_group_id": {
-          "description": "The asset_group_id of a repeatable_group in the format's assets array.",
-          "type": "string"
+          "type": "string",
+          "description": "The asset_group_id of a repeatable_group in the format's assets array."
         },
-        "kind": {
-          "const": "catalog_group",
-          "type": "string"
+        "catalog_item": {
+          "type": "boolean",
+          "const": true,
+          "description": "Each repetition of the format's repeatable_group maps to one item from the catalog."
         },
         "per_item_bindings": {
+          "type": "array",
           "description": "Scalar and asset pool bindings that apply within each repetition of the group. Nested catalog_group bindings are not permitted.",
           "items": {
             "oneOf": [
@@ -155,8 +95,10 @@
               }
             ]
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "ext": {
+          "$ref": "../../core/ext.json"
         }
       },
       "required": [
@@ -164,8 +106,66 @@
         "format_group_id",
         "catalog_item"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
   ],
-  "title": "Catalog Field Binding"
+  "examples": [
+    {
+      "description": "Scalar binding \u2014 hotel name to headline slot",
+      "data": {
+        "kind": "scalar",
+        "asset_id": "headline",
+        "catalog_field": "name"
+      }
+    },
+    {
+      "description": "Scalar binding \u2014 nested field (nightly rate)",
+      "data": {
+        "kind": "scalar",
+        "asset_id": "price_badge",
+        "catalog_field": "price.amount"
+      }
+    },
+    {
+      "description": "Asset pool binding \u2014 hero image from landscape pool",
+      "data": {
+        "kind": "asset_pool",
+        "asset_id": "hero_image",
+        "asset_group_id": "images_landscape"
+      }
+    },
+    {
+      "description": "Asset pool binding \u2014 Snap vertical background from vertical pool",
+      "data": {
+        "kind": "asset_pool",
+        "asset_id": "snap_background",
+        "asset_group_id": "images_vertical"
+      }
+    },
+    {
+      "description": "Catalog group binding \u2014 carousel where each slide is one hotel",
+      "data": {
+        "kind": "catalog_group",
+        "format_group_id": "slide",
+        "catalog_item": true,
+        "per_item_bindings": [
+          {
+            "kind": "scalar",
+            "asset_id": "title",
+            "catalog_field": "name"
+          },
+          {
+            "kind": "scalar",
+            "asset_id": "price",
+            "catalog_field": "price.amount"
+          },
+          {
+            "kind": "asset_pool",
+            "asset_id": "image",
+            "asset_group_id": "images_landscape"
+          }
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/catalog-requirements.json b/schemas/cache/core/requirements/catalog-requirements.json
index bcf8a7254..9fd6fdfc6 100644
--- a/schemas/cache/core/requirements/catalog-requirements.json
+++ b/schemas/cache/core/requirements/catalog-requirements.json
@@ -1,67 +1,67 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Catalog Requirements",
   "description": "Format-level declaration of what catalog feeds a creative needs. Formats that render product listings, store locators, or promotional content declare which catalog types must be synced and what fields each catalog must provide. Buyers use this to ensure the right catalogs are synced before submitting creatives.",
+  "type": "object",
   "properties": {
     "catalog_type": {
       "$ref": "../../enums/catalog-type.json",
       "description": "The catalog type this requirement applies to"
     },
-    "feed_formats": {
-      "description": "Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.",
+    "required": {
+      "type": "boolean",
+      "description": "Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.",
+      "default": true
+    },
+    "min_items": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)"
+    },
+    "max_items": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum number of items the format can render. Items beyond this limit are ignored. Useful for fixed-slot layouts (e.g., a 3-product card) or feed-size constraints."
+    },
+    "required_fields": {
+      "type": "array",
+      "description": "Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
       "items": {
-        "$ref": "../../enums/feed-format.json"
+        "type": "string"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     },
-    "field_bindings": {
-      "description": "Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional \u2014 creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id \u2192 catalog_field), asset pools (asset_id \u2192 asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.",
+    "feed_formats": {
+      "type": "array",
+      "description": "Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.",
       "items": {
-        "$ref": "catalog-field-binding.json"
+        "$ref": "../../enums/feed-format.json"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     },
-    "max_items": {
-      "description": "Maximum number of items the format can render. Items beyond this limit are ignored. Useful for fixed-slot layouts (e.g., a 3-product card) or feed-size constraints.",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "min_items": {
-      "description": "Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)",
-      "minimum": 1,
-      "type": "integer"
-    },
     "offering_asset_constraints": {
+      "type": "array",
       "description": "Per-item creative asset requirements. Declares what asset groups (headlines, images, videos) each catalog item must provide in its assets array, along with count bounds and per-asset technical constraints. Applicable to 'offering' and all vertical catalog types (hotel, flight, job, etc.) whose items carry typed assets.",
       "items": {
         "$ref": "offering-asset-constraint.json"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     },
-    "required": {
-      "default": true,
-      "description": "Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.",
-      "type": "boolean"
-    },
-    "required_fields": {
-      "description": "Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
+    "field_bindings": {
+      "type": "array",
+      "description": "Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional \u2014 creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id \u2192 catalog_field), asset pools (asset_id \u2192 asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.",
       "items": {
-        "type": "string"
+        "$ref": "catalog-field-binding.json"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     }
   },
   "required": [
     "catalog_type"
   ],
-  "title": "Catalog Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/css-asset-requirements.json b/schemas/cache/core/requirements/css-asset-requirements.json
index 5d698a5c6..0843a6da4 100644
--- a/schemas/cache/core/requirements/css-asset-requirements.json
+++ b/schemas/cache/core/requirements/css-asset-requirements.json
@@ -1,14 +1,14 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CSS Asset Requirements",
   "description": "Requirements for CSS creative assets.",
+  "type": "object",
   "properties": {
     "max_file_size_kb": {
-      "description": "Maximum file size in kilobytes",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum file size in kilobytes"
     }
   },
-  "title": "CSS Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/daast-asset-requirements.json b/schemas/cache/core/requirements/daast-asset-requirements.json
index cd587bc0a..5c90f12eb 100644
--- a/schemas/cache/core/requirements/daast-asset-requirements.json
+++ b/schemas/cache/core/requirements/daast-asset-requirements.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "DAAST Asset Requirements",
   "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
+  "type": "object",
   "properties": {
     "daast_version": {
-      "description": "Required DAAST version. DAAST 1.0 is the current IAB standard.",
+      "type": "string",
       "enum": [
         "1.0"
       ],
-      "type": "string"
+      "description": "Required DAAST version. DAAST 1.0 is the current IAB standard."
     }
   },
-  "title": "DAAST Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/html-asset-requirements.json b/schemas/cache/core/requirements/html-asset-requirements.json
index f4ea8e07f..5ab389da2 100644
--- a/schemas/cache/core/requirements/html-asset-requirements.json
+++ b/schemas/cache/core/requirements/html-asset-requirements.json
@@ -1,37 +1,37 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "HTML Asset Requirements",
   "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
+  "type": "object",
   "properties": {
-    "allowed_external_domains": {
-      "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true.",
-      "items": {
-        "format": "hostname",
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "external_resources_allowed": {
-      "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled.",
-      "type": "boolean"
-    },
     "max_file_size_kb": {
-      "description": "Maximum file size in kilobytes for the HTML asset",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum file size in kilobytes for the HTML asset"
     },
     "sandbox": {
-      "default": "none",
-      "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame",
+      "type": "string",
       "enum": [
         "none",
         "iframe",
         "safeframe",
         "fencedframe"
       ],
-      "type": "string"
+      "default": "none",
+      "description": "Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+    },
+    "external_resources_allowed": {
+      "type": "boolean",
+      "description": "Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled."
+    },
+    "allowed_external_domains": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "format": "hostname"
+      },
+      "description": "List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true."
     }
   },
-  "title": "HTML Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/image-asset-requirements.json b/schemas/cache/core/requirements/image-asset-requirements.json
index abb967ae3..5c1baaee2 100644
--- a/schemas/cache/core/requirements/image-asset-requirements.json
+++ b/schemas/cache/core/requirements/image-asset-requirements.json
@@ -1,56 +1,96 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Image Asset Requirements",
   "description": "Requirements for image creative assets. These define the technical constraints for image files.",
-  "if": {
-    "required": [
-      "min_dpi"
-    ]
-  },
+  "type": "object",
   "properties": {
-    "animation_allowed": {
-      "description": "Whether animated images (GIF, animated WebP) are accepted",
-      "type": "boolean"
+    "min_width": {
+      "type": "number",
+      "exclusiveMinimum": 0,
+      "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+    },
+    "max_width": {
+      "type": "number",
+      "exclusiveMinimum": 0,
+      "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width."
+    },
+    "min_height": {
+      "type": "number",
+      "exclusiveMinimum": 0,
+      "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+    },
+    "max_height": {
+      "type": "number",
+      "exclusiveMinimum": 0,
+      "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height."
+    },
+    "unit": {
+      "$ref": "../../enums/dimension-unit.json",
+      "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
     },
     "aspect_ratio": {
-      "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+      "type": "string",
       "pattern": "^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$",
-      "type": "string"
+      "description": "Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')"
+    },
+    "formats": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "enum": [
+          "jpg",
+          "jpeg",
+          "png",
+          "gif",
+          "webp",
+          "svg",
+          "avif",
+          "tiff",
+          "pdf",
+          "eps"
+        ]
+      },
+      "description": "Accepted image file formats"
+    },
+    "min_dpi": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI."
     },
     "bleed": {
+      "type": "object",
       "description": "Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.",
       "oneOf": [
         {
-          "additionalProperties": false,
           "properties": {
             "uniform": {
-              "description": "Same bleed on all four sides",
+              "type": "number",
               "minimum": 0,
-              "type": "number"
+              "description": "Same bleed on all four sides"
             }
           },
           "required": [
             "uniform"
-          ]
+          ],
+          "additionalProperties": false
         },
         {
-          "additionalProperties": false,
           "properties": {
-            "bottom": {
-              "minimum": 0,
-              "type": "number"
-            },
-            "left": {
-              "minimum": 0,
-              "type": "number"
+            "top": {
+              "type": "number",
+              "minimum": 0
             },
             "right": {
-              "minimum": 0,
-              "type": "number"
+              "type": "number",
+              "minimum": 0
             },
-            "top": {
-              "minimum": 0,
-              "type": "number"
+            "bottom": {
+              "type": "number",
+              "minimum": 0
+            },
+            "left": {
+              "type": "number",
+              "minimum": 0
             }
           },
           "required": [
@@ -58,93 +98,53 @@
             "right",
             "bottom",
             "left"
-          ]
+          ],
+          "additionalProperties": false
         }
-      ],
-      "type": "object"
+      ]
     },
     "color_space": {
-      "description": "Required color space. Print typically requires CMYK.",
+      "type": "string",
       "enum": [
         "rgb",
         "cmyk",
         "grayscale"
       ],
-      "type": "string"
-    },
-    "formats": {
-      "description": "Accepted image file formats",
-      "items": {
-        "enum": [
-          "jpg",
-          "jpeg",
-          "png",
-          "gif",
-          "webp",
-          "svg",
-          "avif",
-          "tiff",
-          "pdf",
-          "eps"
-        ],
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "max_animation_duration_ms": {
-      "description": "Maximum animation duration in milliseconds (if animation_allowed is true)",
-      "minimum": 0,
-      "type": "integer"
+      "description": "Required color space. Print typically requires CMYK."
     },
     "max_file_size_kb": {
-      "description": "Maximum file size in kilobytes",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
-    },
-    "max_height": {
-      "description": "Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.",
-      "exclusiveMinimum": 0,
-      "type": "number"
-    },
-    "max_weight_grams": {
-      "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.",
-      "exclusiveMinimum": 0,
-      "type": "integer"
+      "description": "Maximum file size in kilobytes"
     },
-    "max_width": {
-      "description": "Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.",
-      "exclusiveMinimum": 0,
-      "type": "number"
+    "transparency_required": {
+      "type": "boolean",
+      "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)"
     },
-    "min_dpi": {
-      "description": "Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI.",
-      "minimum": 1,
-      "type": "integer"
+    "animation_allowed": {
+      "type": "boolean",
+      "description": "Whether animated images (GIF, animated WebP) are accepted"
     },
-    "min_height": {
-      "description": "Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.",
-      "exclusiveMinimum": 0,
-      "type": "number"
+    "max_animation_duration_ms": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Maximum animation duration in milliseconds (if animation_allowed is true)"
     },
-    "min_width": {
-      "description": "Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.",
+    "max_weight_grams": {
+      "type": "integer",
       "exclusiveMinimum": 0,
-      "type": "number"
-    },
-    "transparency_required": {
-      "description": "Whether the image must support transparency (requires PNG, WebP, or GIF)",
-      "type": "boolean"
-    },
-    "unit": {
-      "$ref": "../../enums/dimension-unit.json",
-      "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
+      "description": "Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels."
     }
   },
+  "if": {
+    "required": [
+      "min_dpi"
+    ]
+  },
   "then": {
     "required": [
       "unit"
     ]
   },
-  "title": "Image Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/javascript-asset-requirements.json b/schemas/cache/core/requirements/javascript-asset-requirements.json
index 6fdc46376..be2f27c2f 100644
--- a/schemas/cache/core/requirements/javascript-asset-requirements.json
+++ b/schemas/cache/core/requirements/javascript-asset-requirements.json
@@ -1,39 +1,39 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "JavaScript Asset Requirements",
   "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
+  "type": "object",
   "properties": {
-    "allowed_external_domains": {
-      "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true.",
-      "items": {
-        "format": "hostname",
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "external_resources_allowed": {
-      "description": "Whether the JavaScript can load external resources dynamically",
-      "type": "boolean"
-    },
     "max_file_size_kb": {
-      "description": "Maximum file size in kilobytes for the JavaScript asset",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum file size in kilobytes for the JavaScript asset"
     },
     "module_type": {
-      "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression",
+      "type": "string",
       "enum": [
         "script",
         "module",
         "iife"
       ],
-      "type": "string"
+      "description": "Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
     },
     "strict_mode_required": {
-      "description": "Whether the JavaScript must use strict mode",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Whether the JavaScript must use strict mode"
+    },
+    "external_resources_allowed": {
+      "type": "boolean",
+      "description": "Whether the JavaScript can load external resources dynamically"
+    },
+    "allowed_external_domains": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "format": "hostname"
+      },
+      "description": "List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true."
     }
   },
-  "title": "JavaScript Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/markdown-asset-requirements.json b/schemas/cache/core/requirements/markdown-asset-requirements.json
index da0820bf7..45a3505d5 100644
--- a/schemas/cache/core/requirements/markdown-asset-requirements.json
+++ b/schemas/cache/core/requirements/markdown-asset-requirements.json
@@ -1,14 +1,14 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Markdown Asset Requirements",
   "description": "Requirements for markdown creative assets.",
+  "type": "object",
   "properties": {
     "max_length": {
-      "description": "Maximum character length",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum character length"
     }
   },
-  "title": "Markdown Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/offering-asset-constraint.json b/schemas/cache/core/requirements/offering-asset-constraint.json
index e13fb0824..0f724c6bf 100644
--- a/schemas/cache/core/requirements/offering-asset-constraint.json
+++ b/schemas/cache/core/requirements/offering-asset-constraint.json
@@ -1,65 +1,65 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Offering Asset Constraint",
   "description": "Declares per-group creative requirements that each offering must satisfy. Allows formats to specify what asset groups (headlines, images, videos) offerings must provide, along with count and per-asset technical constraints.",
-  "examples": [
-    {
-      "data": {
-        "asset_group_id": "headlines",
-        "asset_type": "text",
-        "max_count": 15,
-        "min_count": 3,
-        "required": true
-      },
-      "description": "Headline constraint with count bounds"
-    },
-    {
-      "data": {
-        "asset_group_id": "images_landscape",
-        "asset_type": "image",
-        "max_count": 20,
-        "min_count": 1,
-        "required": true
-      },
-      "description": "Landscape image constraint with count bounds"
-    }
-  ],
+  "type": "object",
   "properties": {
     "asset_group_id": {
-      "description": "The asset group this constraint applies to. Values are format-defined vocabulary \u2014 each format chooses its own group IDs (e.g., 'headlines', 'images', 'videos'). Buyers discover them via list_creative_formats.",
-      "type": "string"
-    },
-    "asset_requirements": {
-      "$ref": "asset-requirements.json",
-      "description": "Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group."
+      "type": "string",
+      "description": "The asset group this constraint applies to. Values are format-defined vocabulary \u2014 each format chooses its own group IDs (e.g., 'headlines', 'images', 'videos'). Buyers discover them via list_creative_formats."
     },
     "asset_type": {
       "$ref": "../../enums/asset-content-type.json",
       "description": "The expected content type for this group."
     },
-    "ext": {
-      "$ref": "../../core/ext.json"
+    "required": {
+      "type": "boolean",
+      "description": "Whether this asset group must be present in each offering. Defaults to true.",
+      "default": true
     },
-    "max_count": {
-      "description": "Maximum number of items allowed in this group.",
+    "min_count": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Minimum number of items required in this group."
     },
-    "min_count": {
-      "description": "Minimum number of items required in this group.",
+    "max_count": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum number of items allowed in this group."
     },
-    "required": {
-      "default": true,
-      "description": "Whether this asset group must be present in each offering. Defaults to true.",
-      "type": "boolean"
+    "asset_requirements": {
+      "$ref": "asset-requirements.json",
+      "description": "Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group."
+    },
+    "ext": {
+      "$ref": "../../core/ext.json"
     }
   },
   "required": [
     "asset_group_id",
     "asset_type"
   ],
-  "title": "Offering Asset Constraint",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Headline constraint with count bounds",
+      "data": {
+        "asset_group_id": "headlines",
+        "asset_type": "text",
+        "required": true,
+        "min_count": 3,
+        "max_count": 15
+      }
+    },
+    {
+      "description": "Landscape image constraint with count bounds",
+      "data": {
+        "asset_group_id": "images_landscape",
+        "asset_type": "image",
+        "required": true,
+        "min_count": 1,
+        "max_count": 20
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/text-asset-requirements.json b/schemas/cache/core/requirements/text-asset-requirements.json
index 9ba91cf43..be1e93d13 100644
--- a/schemas/cache/core/requirements/text-asset-requirements.json
+++ b/schemas/cache/core/requirements/text-asset-requirements.json
@@ -1,40 +1,40 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Text Asset Requirements",
   "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
+  "type": "object",
   "properties": {
-    "character_pattern": {
-      "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')",
-      "type": "string"
+    "min_length": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Minimum character length"
     },
     "max_length": {
-      "description": "Maximum character length",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum character length"
     },
-    "max_lines": {
-      "description": "Maximum number of lines",
+    "min_lines": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
-    },
-    "min_length": {
-      "description": "Minimum character length",
-      "minimum": 0,
-      "type": "integer"
+      "description": "Minimum number of lines"
     },
-    "min_lines": {
-      "description": "Minimum number of lines",
+    "max_lines": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum number of lines"
+    },
+    "character_pattern": {
+      "type": "string",
+      "description": "Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
     },
     "prohibited_terms": {
-      "description": "List of prohibited words or phrases",
+      "type": "array",
       "items": {
         "type": "string"
       },
-      "type": "array"
+      "description": "List of prohibited words or phrases"
     }
   },
-  "title": "Text Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/url-asset-requirements.json b/schemas/cache/core/requirements/url-asset-requirements.json
index d81b16b66..dd4112cc3 100644
--- a/schemas/cache/core/requirements/url-asset-requirements.json
+++ b/schemas/cache/core/requirements/url-asset-requirements.json
@@ -1,38 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "URL Asset Requirements",
   "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
+  "type": "object",
   "properties": {
-    "allowed_domains": {
-      "description": "List of allowed domains for the URL",
-      "items": {
-        "format": "hostname",
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "macro_support": {
-      "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})",
-      "type": "boolean"
-    },
-    "max_length": {
-      "description": "Maximum URL length in characters",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "protocols": {
-      "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs.",
-      "items": {
-        "enum": [
-          "https",
-          "http"
-        ],
-        "type": "string"
-      },
-      "type": "array"
-    },
     "role": {
-      "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum.",
+      "type": "string",
       "enum": [
         "clickthrough",
         "landing_page",
@@ -41,9 +14,36 @@
         "viewability_tracker",
         "third_party_tracker"
       ],
-      "type": "string"
+      "description": "Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum."
+    },
+    "protocols": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "enum": [
+          "https",
+          "http"
+        ]
+      },
+      "description": "Allowed URL protocols. HTTPS is recommended for all ad URLs."
+    },
+    "allowed_domains": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "format": "hostname"
+      },
+      "description": "List of allowed domains for the URL"
+    },
+    "max_length": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum URL length in characters"
+    },
+    "macro_support": {
+      "type": "boolean",
+      "description": "Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})"
     }
   },
-  "title": "URL Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/vast-asset-requirements.json b/schemas/cache/core/requirements/vast-asset-requirements.json
index c26e6ad57..cf2284264 100644
--- a/schemas/cache/core/requirements/vast-asset-requirements.json
+++ b/schemas/cache/core/requirements/vast-asset-requirements.json
@@ -1,10 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "VAST Asset Requirements",
   "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
+  "type": "object",
   "properties": {
     "vast_version": {
-      "description": "Required VAST version",
+      "type": "string",
       "enum": [
         "2.0",
         "3.0",
@@ -12,9 +13,8 @@
         "4.1",
         "4.2"
       ],
-      "type": "string"
+      "description": "Required VAST version"
     }
   },
-  "title": "VAST Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/video-asset-requirements.json b/schemas/cache/core/requirements/video-asset-requirements.json
index 0ad763c69..52034b85d 100644
--- a/schemas/cache/core/requirements/video-asset-requirements.json
+++ b/schemas/cache/core/requirements/video-asset-requirements.json
@@ -1,99 +1,193 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Video Asset Requirements",
   "description": "Requirements for video creative assets. These define the technical constraints for video files.",
+  "type": "object",
   "properties": {
+    "min_width": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Minimum width in pixels"
+    },
+    "max_width": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum width in pixels"
+    },
+    "min_height": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Minimum height in pixels"
+    },
+    "max_height": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum height in pixels"
+    },
     "aspect_ratio": {
-      "description": "Required aspect ratio (e.g., '16:9', '9:16')",
+      "type": "string",
       "pattern": "^\\d+:\\d+$",
-      "type": "string"
+      "description": "Required aspect ratio (e.g., '16:9', '9:16')"
     },
-    "audio_required": {
-      "description": "Whether the video must include an audio track",
-      "type": "boolean"
+    "min_duration_ms": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Minimum duration in milliseconds"
     },
-    "codecs": {
-      "description": "Accepted video codecs",
-      "items": {
-        "enum": [
-          "h264",
-          "h265",
-          "vp8",
-          "vp9",
-          "av1"
-        ],
-        "type": "string"
-      },
-      "type": "array"
+    "max_duration_ms": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum duration in milliseconds"
     },
     "containers": {
-      "description": "Accepted video container formats",
+      "type": "array",
       "items": {
+        "type": "string",
         "enum": [
           "mp4",
           "webm",
           "mov",
           "avi",
           "mkv"
-        ],
-        "type": "string"
+        ]
       },
-      "type": "array"
+      "description": "Accepted video container formats"
     },
-    "frame_rates": {
-      "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])",
+    "codecs": {
+      "type": "array",
       "items": {
-        "minimum": 1,
-        "type": "number"
+        "type": "string",
+        "enum": [
+          "h264",
+          "h265",
+          "vp8",
+          "vp9",
+          "av1",
+          "prores"
+        ]
       },
-      "type": "array"
+      "description": "Accepted video codecs"
     },
-    "max_bitrate_kbps": {
-      "description": "Maximum video bitrate in kilobits per second",
+    "max_file_size_kb": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum file size in kilobytes"
     },
-    "max_duration_ms": {
-      "description": "Maximum duration in milliseconds",
+    "min_bitrate_kbps": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Minimum video bitrate in kilobits per second"
     },
-    "max_file_size_kb": {
-      "description": "Maximum file size in kilobytes",
+    "max_bitrate_kbps": {
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum video bitrate in kilobits per second"
     },
-    "max_height": {
-      "description": "Maximum height in pixels",
-      "minimum": 1,
-      "type": "integer"
+    "frame_rates": {
+      "type": "array",
+      "items": {
+        "type": "number",
+        "minimum": 1
+      },
+      "description": "Accepted frame rates in frames per second (e.g., [24, 30, 60])"
     },
-    "max_width": {
-      "description": "Maximum width in pixels",
-      "minimum": 1,
-      "type": "integer"
+    "audio_required": {
+      "type": "boolean",
+      "description": "Whether the video must include an audio track"
     },
-    "min_bitrate_kbps": {
-      "description": "Minimum video bitrate in kilobits per second",
-      "minimum": 1,
-      "type": "integer"
+    "frame_rate_type": {
+      "type": "string",
+      "enum": [
+        "constant",
+        "variable"
+      ],
+      "description": "Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing."
     },
-    "min_duration_ms": {
-      "description": "Minimum duration in milliseconds",
-      "minimum": 1,
-      "type": "integer"
+    "scan_type": {
+      "type": "string",
+      "enum": [
+        "progressive",
+        "interlaced"
+      ],
+      "description": "Required scan type. Modern delivery requires progressive scan."
     },
-    "min_height": {
-      "description": "Minimum height in pixels",
-      "minimum": 1,
-      "type": "integer"
+    "gop_type": {
+      "type": "string",
+      "enum": [
+        "closed",
+        "open"
+      ],
+      "description": "Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points."
     },
-    "min_width": {
-      "description": "Minimum width in pixels",
-      "minimum": 1,
-      "type": "integer"
+    "min_gop_interval_seconds": {
+      "type": "number",
+      "minimum": 0,
+      "description": "Minimum keyframe interval in seconds"
+    },
+    "max_gop_interval_seconds": {
+      "type": "number",
+      "minimum": 0,
+      "description": "Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals."
+    },
+    "moov_atom_position": {
+      "type": "string",
+      "enum": [
+        "start",
+        "end"
+      ],
+      "description": "Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+    },
+    "audio_codecs": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "enum": [
+          "aac",
+          "pcm",
+          "ac3",
+          "eac3",
+          "mp3",
+          "opus",
+          "vorbis",
+          "flac"
+        ]
+      },
+      "description": "Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"
+    },
+    "audio_sample_rates": {
+      "type": "array",
+      "items": {
+        "type": "integer",
+        "minimum": 1
+      },
+      "description": "Accepted audio sample rates in Hz (e.g., [44100, 48000])"
+    },
+    "audio_channels": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "enum": [
+          "mono",
+          "stereo",
+          "5.1",
+          "7.1"
+        ]
+      },
+      "description": "Accepted audio channel configurations"
+    },
+    "loudness_lufs": {
+      "type": "number",
+      "description": "Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)"
+    },
+    "loudness_tolerance_db": {
+      "type": "number",
+      "minimum": 0,
+      "description": "Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)"
+    },
+    "true_peak_dbfs": {
+      "type": "number",
+      "description": "Maximum true peak level in dBFS (e.g., -2 for broadcast)"
     }
   },
-  "title": "Video Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/requirements/webhook-asset-requirements.json b/schemas/cache/core/requirements/webhook-asset-requirements.json
index 310dcaea4..90d129780 100644
--- a/schemas/cache/core/requirements/webhook-asset-requirements.json
+++ b/schemas/cache/core/requirements/webhook-asset-requirements.json
@@ -1,20 +1,20 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Webhook Asset Requirements",
   "description": "Requirements for webhook creative assets.",
+  "type": "object",
   "properties": {
     "methods": {
-      "description": "Allowed HTTP methods",
+      "type": "array",
       "items": {
+        "type": "string",
         "enum": [
           "GET",
           "POST"
-        ],
-        "type": "string"
+        ]
       },
-      "type": "array"
+      "description": "Allowed HTTP methods"
     }
   },
-  "title": "Webhook Asset Requirements",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/response.json b/schemas/cache/core/response.json
index 1e33e1b7c..0a2c2f342 100644
--- a/schemas/cache/core/response.json
+++ b/schemas/cache/core/response.json
@@ -1,23 +1,23 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Protocol Response",
   "description": "Protocol-level response wrapper (MCP/A2A) - contains AdCP task data plus protocol fields",
+  "type": "object",
   "properties": {
+    "message": {
+      "type": "string",
+      "description": "Human-readable summary"
+    },
     "context_id": {
-      "description": "Session continuity identifier",
-      "type": "string"
+      "type": "string",
+      "description": "Session continuity identifier"
     },
     "data": {
       "description": "AdCP task-specific response data (see individual task response schemas)"
-    },
-    "message": {
-      "description": "Human-readable summary",
-      "type": "string"
     }
   },
   "required": [
     "message"
   ],
-  "title": "Protocol Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/rights-constraint.json b/schemas/cache/core/rights-constraint.json
index b14d26efb..0d8d2909f 100644
--- a/schemas/cache/core/rights-constraint.json
+++ b/schemas/cache/core/rights-constraint.json
@@ -1,90 +1,91 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Rights Constraint",
   "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
+  "type": "object",
   "properties": {
-    "approval_status": {
-      "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)",
-      "enum": [
-        "pending",
-        "approved",
-        "rejected"
-      ],
-      "type": "string"
-    },
-    "countries": {
-      "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
-      "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "excluded_countries": {
-      "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
-      "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "impression_cap": {
-      "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "right_type": {
-      "$ref": "../enums/right-type.json",
-      "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types."
+    "rights_id": {
+      "type": "string",
+      "description": "Rights grant identifier from the acquire_rights response"
     },
     "rights_agent": {
+      "type": "object",
       "description": "The agent that granted these rights",
       "properties": {
-        "id": {
-          "description": "Agent identifier",
-          "type": "string"
-        },
         "url": {
-          "description": "MCP endpoint URL of the rights agent",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "MCP endpoint URL of the rights agent"
+        },
+        "id": {
+          "type": "string",
+          "description": "Agent identifier"
         }
       },
       "required": [
         "url",
         "id"
-      ],
-      "type": "object"
+      ]
     },
-    "rights_id": {
-      "description": "Rights grant identifier from the acquire_rights response",
-      "type": "string"
+    "valid_from": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Start of the rights validity period"
+    },
+    "valid_until": {
+      "type": "string",
+      "format": "date-time",
+      "description": "End of the rights validity period. Creative should not be served after this time."
     },
     "uses": {
+      "type": "array",
       "description": "Rights uses covered by this constraint",
       "items": {
         "$ref": "../enums/right-use.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "valid_from": {
-      "description": "Start of the rights validity period",
-      "format": "date-time",
-      "type": "string"
+    "countries": {
+      "type": "array",
+      "description": "Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.",
+      "items": {
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
+      }
     },
-    "valid_until": {
-      "description": "End of the rights validity period. Creative should not be served after this time.",
-      "format": "date-time",
-      "type": "string"
+    "excluded_countries": {
+      "type": "array",
+      "description": "Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.",
+      "items": {
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
+      }
+    },
+    "impression_cap": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit."
+    },
+    "right_type": {
+      "$ref": "../enums/right-type.json",
+      "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types."
+    },
+    "approval_status": {
+      "type": "string",
+      "enum": [
+        "pending",
+        "approved",
+        "rejected"
+      ],
+      "description": "Approval status from the rights holder at manifest creation time (snapshot, not a live value)"
     },
     "verification_url": {
-      "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving."
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -92,6 +93,5 @@
     "rights_agent",
     "uses"
   ],
-  "title": "Rights Constraint",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/signal-definition.json b/schemas/cache/core/signal-definition.json
index e56480973..cae7bfa9f 100644
--- a/schemas/cache/core/signal-definition.json
+++ b/schemas/cache/core/signal-definition.json
@@ -1,81 +1,82 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Signal Definition",
   "description": "Definition of a signal in a data provider's catalog, published via adagents.json",
+  "type": "object",
   "properties": {
-    "allowed_values": {
-      "description": "For categorical signals, the valid values users can be assigned",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "description": {
-      "description": "Detailed description of what this signal represents and how it's derived",
-      "maxLength": 2000,
-      "type": "string"
-    },
     "id": {
-      "description": "Signal identifier within this data provider's catalog",
+      "type": "string",
       "pattern": "^[a-zA-Z0-9_-]+$",
-      "type": "string"
+      "description": "Signal identifier within this data provider's catalog"
     },
     "name": {
+      "type": "string",
       "description": "Human-readable signal name",
-      "maxLength": 255,
       "minLength": 1,
-      "type": "string"
+      "maxLength": 255
+    },
+    "description": {
+      "type": "string",
+      "description": "Detailed description of what this signal represents and how it's derived",
+      "maxLength": 2000
+    },
+    "value_type": {
+      "$ref": "../enums/signal-value-type.json",
+      "description": "The data type of this signal's values"
+    },
+    "tags": {
+      "type": "array",
+      "description": "Tags for grouping and filtering signals within the catalog",
+      "items": {
+        "type": "string",
+        "pattern": "^[a-z0-9_-]+$"
+      }
+    },
+    "allowed_values": {
+      "type": "array",
+      "description": "For categorical signals, the valid values users can be assigned",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "restricted_attributes": {
+      "type": "array",
+      "description": "Restricted attribute categories this signal touches. Data providers SHOULD declare these so governance agents can structurally match signals against a plan's restricted_attributes without relying on semantic inference from the signal name or description.",
+      "items": {
+        "$ref": "../enums/restricted-attribute.json"
+      },
+      "minItems": 1
     },
     "policy_categories": {
+      "type": "array",
       "description": "Policy categories this signal is sensitive for (e.g., a children's interest signal declares ['children_directed']). Governance agents match these against a plan's policy_categories to flag sensitive data usage.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "range": {
+      "type": "object",
       "description": "For numeric signals, the valid value range",
       "properties": {
-        "max": {
-          "description": "Maximum value",
-          "type": "number"
-        },
         "min": {
-          "description": "Minimum value",
-          "type": "number"
+          "type": "number",
+          "description": "Minimum value"
+        },
+        "max": {
+          "type": "number",
+          "description": "Maximum value"
         },
         "unit": {
-          "description": "Unit of measurement (e.g., 'score', 'dollars', 'years')",
-          "type": "string"
+          "type": "string",
+          "description": "Unit of measurement (e.g., 'score', 'dollars', 'years')"
         }
       },
       "required": [
         "min",
         "max"
-      ],
-      "type": "object"
-    },
-    "restricted_attributes": {
-      "description": "Restricted attribute categories this signal touches. Data providers SHOULD declare these so governance agents can structurally match signals against a plan's restricted_attributes without relying on semantic inference from the signal name or description.",
-      "items": {
-        "$ref": "../enums/restricted-attribute.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "tags": {
-      "description": "Tags for grouping and filtering signals within the catalog",
-      "items": {
-        "pattern": "^[a-z0-9_-]+$",
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "value_type": {
-      "$ref": "../enums/signal-value-type.json",
-      "description": "The data type of this signal's values"
+      ]
     }
   },
   "required": [
@@ -83,6 +84,5 @@
     "name",
     "value_type"
   ],
-  "title": "Signal Definition",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/signal-filters.json b/schemas/cache/core/signal-filters.json
index 436b610cb..f9f4d96e3 100644
--- a/schemas/cache/core/signal-filters.json
+++ b/schemas/cache/core/signal-filters.json
@@ -1,42 +1,42 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Signal Filters",
   "description": "Filters to refine signal discovery results",
+  "type": "object",
   "properties": {
     "catalog_types": {
+      "type": "array",
       "description": "Filter by catalog type",
       "items": {
         "$ref": "../enums/signal-catalog-type.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "data_providers": {
+      "type": "array",
       "description": "Filter by specific data providers",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "max_cpm": {
+      "type": "number",
       "description": "Maximum CPM filter. Applies only to signals with model='cpm'.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "max_percent": {
+      "type": "number",
       "description": "Maximum percent-of-media rate filter. Signals where all percent_of_media pricing options exceed this value are excluded. Does not account for max_cpm caps.",
-      "maximum": 100,
       "minimum": 0,
-      "type": "number"
+      "maximum": 100
     },
     "min_coverage_percentage": {
+      "type": "number",
       "description": "Minimum coverage requirement",
-      "maximum": 100,
       "minimum": 0,
-      "type": "number"
+      "maximum": 100
     }
   },
-  "title": "Signal Filters",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/signal-id.json b/schemas/cache/core/signal-id.json
index 15fd62bc1..52e6e76aa 100644
--- a/schemas/cache/core/signal-id.json
+++ b/schemas/cache/core/signal-id.json
@@ -1,28 +1,29 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Signal ID",
   "description": "Universal signal identifier. Uses 'source' as discriminator: 'catalog' for signals from a data provider's published catalog (verifiable), 'agent' for agent-native signals (not externally verifiable).",
   "discriminator": {
     "propertyName": "source"
   },
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Catalog signal - references a signal from a data provider's published catalog. Buyers can verify authorization by checking the data provider's adagents.json.",
       "properties": {
+        "source": {
+          "type": "string",
+          "const": "catalog",
+          "description": "Discriminator indicating this signal is from a data provider's published catalog"
+        },
         "data_provider_domain": {
+          "type": "string",
           "description": "Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "id": {
-          "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')",
+          "type": "string",
           "pattern": "^[a-zA-Z0-9_-]+$",
-          "type": "string"
-        },
-        "source": {
-          "const": "catalog",
-          "description": "Discriminator indicating this signal is from a data provider's published catalog",
-          "type": "string"
+          "description": "Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')"
         }
       },
       "required": [
@@ -30,26 +31,26 @@
         "data_provider_domain",
         "id"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Agent signal - references a signal native to the signals agent. Not externally verifiable; buyer trusts the agent's claim about the signal.",
       "properties": {
+        "source": {
+          "type": "string",
+          "const": "agent",
+          "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)"
+        },
         "agent_url": {
-          "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
         },
         "id": {
-          "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')",
+          "type": "string",
           "pattern": "^[a-zA-Z0-9_-]+$",
-          "type": "string"
-        },
-        "source": {
-          "const": "agent",
-          "description": "Discriminator indicating this signal is native to the agent (not from a data provider catalog)",
-          "type": "string"
+          "description": "Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')"
         }
       },
       "required": [
@@ -57,8 +58,7 @@
         "agent_url",
         "id"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Signal ID"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/signal-pricing-option.json b/schemas/cache/core/signal-pricing-option.json
index 9c3007380..18fdf64b0 100644
--- a/schemas/cache/core/signal-pricing-option.json
+++ b/schemas/cache/core/signal-pricing-option.json
@@ -1,22 +1,6 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "allOf": [
-    {
-      "properties": {
-        "pricing_option_id": {
-          "description": "Opaque identifier for this pricing option, unique within the signals agent. Pass this in report_usage to identify which pricing option was applied.",
-          "type": "string"
-        }
-      },
-      "required": [
-        "pricing_option_id"
-      ],
-      "type": "object"
-    },
-    {
-      "$ref": "signal-pricing.json"
-    }
-  ],
-  "description": "A pricing option offered by a signals agent. Combines pricing_option_id with the signal pricing model fields at the same level \u2014 pass pricing_option_id in report_usage for billing verification.",
-  "title": "Signal Pricing Option"
+  "title": "Signal Pricing Option",
+  "description": "Deprecated \u2014 use vendor-pricing-option.json for new implementations. This alias is retained for backward compatibility.",
+  "$ref": "vendor-pricing-option.json"
 }
\ No newline at end of file
diff --git a/schemas/cache/core/signal-pricing.json b/schemas/cache/core/signal-pricing.json
index 3afa5fcb7..f752d8962 100644
--- a/schemas/cache/core/signal-pricing.json
+++ b/schemas/cache/core/signal-pricing.json
@@ -1,27 +1,30 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "description": "Pricing model for a signal. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), or 'flat_fee' (fixed charge per reporting period, e.g. monthly licensed segments).",
+  "title": "Vendor Pricing",
+  "description": "Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "CpmPricing",
       "description": "Fixed cost per thousand impressions",
+      "type": "object",
       "properties": {
+        "model": {
+          "type": "string",
+          "const": "cpm"
+        },
         "cpm": {
+          "type": "number",
           "description": "Cost per thousand impressions",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
         "currency": {
+          "type": "string",
           "description": "ISO 4217 currency code",
-          "pattern": "^[A-Z]{3}$",
-          "type": "string"
+          "pattern": "^[A-Z]{3}$"
         },
         "ext": {
           "$ref": "ext.json"
-        },
-        "model": {
-          "const": "cpm",
-          "type": "string"
         }
       },
       "required": [
@@ -29,35 +32,35 @@
         "cpm",
         "currency"
       ],
-      "title": "CpmPricing",
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "title": "PercentOfMediaPricing",
       "description": "Percentage of media spend charged for this signal. When max_cpm is set, the effective rate is capped at that CPM \u2014 useful for platforms like The Trade Desk that use percent-of-media pricing with a CPM ceiling.",
+      "type": "object",
       "properties": {
-        "currency": {
-          "description": "ISO 4217 currency code for the resulting charge",
-          "pattern": "^[A-Z]{3}$",
-          "type": "string"
+        "model": {
+          "type": "string",
+          "const": "percent_of_media"
         },
-        "ext": {
-          "$ref": "ext.json"
+        "percent": {
+          "type": "number",
+          "description": "Percentage of media spend, e.g. 15 = 15%",
+          "minimum": 0,
+          "maximum": 100
         },
         "max_cpm": {
+          "type": "number",
           "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
-        "model": {
-          "const": "percent_of_media",
-          "type": "string"
+        "currency": {
+          "type": "string",
+          "description": "ISO 4217 currency code for the resulting charge",
+          "pattern": "^[A-Z]{3}$"
         },
-        "percent": {
-          "description": "Percentage of media spend, e.g. 15 = 15%",
-          "maximum": 100,
-          "minimum": 0,
-          "type": "number"
+        "ext": {
+          "$ref": "ext.json"
         }
       },
       "required": [
@@ -65,39 +68,39 @@
         "percent",
         "currency"
       ],
-      "title": "PercentOfMediaPricing",
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "title": "FlatFeePricing",
       "description": "Fixed charge per billing period, regardless of impressions or spend. Used for licensed data bundles and audience subscriptions.",
+      "type": "object",
       "properties": {
+        "model": {
+          "type": "string",
+          "const": "flat_fee"
+        },
         "amount": {
+          "type": "number",
           "description": "Fixed charge for the billing period",
-          "minimum": 0,
-          "type": "number"
-        },
-        "currency": {
-          "description": "ISO 4217 currency code",
-          "pattern": "^[A-Z]{3}$",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "ext.json"
-        },
-        "model": {
-          "const": "flat_fee",
-          "type": "string"
+          "minimum": 0
         },
         "period": {
-          "description": "Billing period for the flat fee.",
+          "type": "string",
           "enum": [
             "monthly",
             "quarterly",
             "annual",
             "campaign"
           ],
-          "type": "string"
+          "description": "Billing period for the flat fee."
+        },
+        "currency": {
+          "type": "string",
+          "description": "ISO 4217 currency code",
+          "pattern": "^[A-Z]{3}$"
+        },
+        "ext": {
+          "$ref": "ext.json"
         }
       },
       "required": [
@@ -106,10 +109,42 @@
         "period",
         "currency"
       ],
-      "title": "FlatFeePricing",
-      "type": "object"
+      "additionalProperties": true
+    },
+    {
+      "title": "PerUnitPricing",
+      "description": "Fixed price per unit of work. Used for creative transformation (per format), AI generation (per image, per token), and rendering (per variant). The unit field describes what is counted; unit_price is the cost per one unit.",
+      "type": "object",
+      "properties": {
+        "model": {
+          "type": "string",
+          "const": "per_unit"
+        },
+        "unit": {
+          "type": "string",
+          "description": "What is counted \u2014 e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        },
+        "unit_price": {
+          "type": "number",
+          "description": "Cost per one unit",
+          "minimum": 0
+        },
+        "currency": {
+          "type": "string",
+          "description": "ISO 4217 currency code",
+          "pattern": "^[A-Z]{3}$"
+        },
+        "ext": {
+          "$ref": "ext.json"
+        }
+      },
+      "required": [
+        "model",
+        "unit",
+        "unit_price",
+        "currency"
+      ],
+      "additionalProperties": true
     }
-  ],
-  "title": "Signal Pricing",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/signal-targeting.json b/schemas/cache/core/signal-targeting.json
index 2d800d23a..2bec3b922 100644
--- a/schemas/cache/core/signal-targeting.json
+++ b/schemas/cache/core/signal-targeting.json
@@ -1,26 +1,27 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Signal Targeting",
   "description": "Targeting constraint for a specific signal. Uses value_type as discriminator to determine the targeting expression format.",
   "discriminator": {
     "propertyName": "value_type"
   },
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Binary signal targeting - user either matches or doesn't",
       "properties": {
         "signal_id": {
           "$ref": "signal-id.json",
           "description": "The signal to target"
         },
-        "value": {
-          "description": "Whether to include (true) or exclude (false) users matching this signal",
-          "type": "boolean"
-        },
         "value_type": {
+          "type": "string",
           "const": "binary",
-          "description": "Discriminator for binary signals",
-          "type": "string"
+          "description": "Discriminator for binary signals"
+        },
+        "value": {
+          "type": "boolean",
+          "description": "Whether to include (true) or exclude (false) users matching this signal"
         }
       },
       "required": [
@@ -28,10 +29,10 @@
         "value_type",
         "value"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Categorical signal targeting - target users with specific values",
       "properties": {
         "signal_id": {
@@ -39,17 +40,17 @@
           "description": "The signal to target"
         },
         "value_type": {
+          "type": "string",
           "const": "categorical",
-          "description": "Discriminator for categorical signals",
-          "type": "string"
+          "description": "Discriminator for categorical signals"
         },
         "values": {
+          "type": "array",
           "description": "Values to target. Users with any of these values will be included.",
           "items": {
             "type": "string"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
       },
       "required": [
@@ -57,36 +58,35 @@
         "value_type",
         "values"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Numeric signal targeting - target users within a value range. If min_value is provided, it must be <= max_value. Values should be within the signal's defined range (see signal definition).",
       "properties": {
-        "max_value": {
-          "description": "Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided. Should be <= signal's range.max if defined.",
-          "type": "number"
-        },
-        "min_value": {
-          "description": "Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided. Should be >= signal's range.min if defined.",
-          "type": "number"
-        },
         "signal_id": {
           "$ref": "signal-id.json",
           "description": "The signal to target"
         },
         "value_type": {
+          "type": "string",
           "const": "numeric",
-          "description": "Discriminator for numeric signals",
-          "type": "string"
+          "description": "Discriminator for numeric signals"
+        },
+        "min_value": {
+          "type": "number",
+          "description": "Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided. Should be >= signal's range.min if defined."
+        },
+        "max_value": {
+          "type": "number",
+          "description": "Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided. Should be <= signal's range.max if defined."
         }
       },
       "required": [
         "signal_id",
         "value_type"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Signal Targeting"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/start-timing.json b/schemas/cache/core/start-timing.json
index 13cc88296..bbb33b977 100644
--- a/schemas/cache/core/start-timing.json
+++ b/schemas/cache/core/start-timing.json
@@ -1,17 +1,17 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Start Timing",
   "description": "Campaign start timing: 'asap' or ISO 8601 date-time",
   "oneOf": [
     {
+      "type": "string",
       "const": "asap",
-      "description": "Start campaign as soon as possible",
-      "type": "string"
+      "description": "Start campaign as soon as possible"
     },
     {
-      "description": "Scheduled start date/time in ISO 8601 format",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Scheduled start date/time in ISO 8601 format"
     }
-  ],
-  "title": "Start Timing"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/store-item.json b/schemas/cache/core/store-item.json
index 683c88ae4..0f00f91df 100644
--- a/schemas/cache/core/store-item.json
+++ b/schemas/cache/core/store-item.json
@@ -1,106 +1,230 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Store Item",
   "description": "A physical store or location within a store-type catalog. Carries the location data, catchment areas, and metadata that platforms use for proximity targeting, store locator creatives, and inventory-aware ad serving.",
+  "type": "object",
+  "properties": {
+    "store_id": {
+      "type": "string",
+      "description": "Unique identifier for this store. Used to reference specific stores in targeting, inventory feeds, and creative templates."
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable store name (e.g., 'Amsterdam Flagship', 'Brooklyn Heights')."
+    },
+    "location": {
+      "type": "object",
+      "description": "Geographic coordinates of the store.",
+      "properties": {
+        "lat": {
+          "type": "number",
+          "minimum": -90,
+          "maximum": 90,
+          "description": "Latitude in decimal degrees (WGS 84)."
+        },
+        "lng": {
+          "type": "number",
+          "minimum": -180,
+          "maximum": 180,
+          "description": "Longitude in decimal degrees (WGS 84)."
+        }
+      },
+      "required": [
+        "lat",
+        "lng"
+      ],
+      "additionalProperties": false
+    },
+    "address": {
+      "type": "object",
+      "description": "Structured address for display and geocoding fallback.",
+      "properties": {
+        "street": {
+          "type": "string",
+          "description": "Street address (e.g., '123 Main St')."
+        },
+        "city": {
+          "type": "string",
+          "description": "City name."
+        },
+        "region": {
+          "type": "string",
+          "description": "State, province, or region. ISO 3166-2 subdivision code preferred (e.g., 'NL-NH', 'US-CA')."
+        },
+        "postal_code": {
+          "type": "string",
+          "description": "Postal or ZIP code."
+        },
+        "country": {
+          "type": "string",
+          "pattern": "^[A-Z]{2}$",
+          "description": "ISO 3166-1 alpha-2 country code."
+        }
+      },
+      "additionalProperties": false
+    },
+    "catchments": {
+      "type": "array",
+      "description": "Catchment areas for this store. Each defines a reachable area using travel time (isochrone), simple radius, or pre-computed GeoJSON. Multiple catchments allow different modes \u2014 e.g., 15-minute drive AND 10-minute walk.",
+      "items": {
+        "$ref": "catchment.json"
+      },
+      "minItems": 1
+    },
+    "phone": {
+      "type": "string",
+      "description": "Store phone number in E.164 format (e.g., '+31201234567')."
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Store-specific page URL (e.g., store locator detail page)."
+    },
+    "hours": {
+      "type": "object",
+      "description": "Operating hours. Keys are ISO day names (monday\u2013sunday), values are time ranges.",
+      "propertyNames": {
+        "enum": [
+          "monday",
+          "tuesday",
+          "wednesday",
+          "thursday",
+          "friday",
+          "saturday",
+          "sunday"
+        ]
+      },
+      "additionalProperties": {
+        "type": "string",
+        "description": "Time range in HH:MM-HH:MM format (e.g., '09:00-21:00'). Use 'closed' for days the store is not open."
+      }
+    },
+    "tags": {
+      "type": "array",
+      "description": "Tags for filtering stores in targeting and creative selection (e.g., 'flagship', 'pickup', 'pharmacy').",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
+  "required": [
+    "store_id",
+    "name",
+    "location"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Urban store with walking and driving catchments",
       "data": {
+        "store_id": "amsterdam-flagship",
+        "name": "Amsterdam Flagship",
+        "location": {
+          "lat": 52.3676,
+          "lng": 4.9041
+        },
         "address": {
+          "street": "Kalverstraat 1",
           "city": "Amsterdam",
-          "country": "NL",
-          "postal_code": "1012 NX",
           "region": "NL-NH",
-          "street": "Kalverstraat 1"
+          "postal_code": "1012 NX",
+          "country": "NL"
         },
         "catchments": [
           {
             "catchment_id": "walk",
             "label": "10-min walk",
-            "transport_mode": "walking",
             "travel_time": {
-              "unit": "min",
-              "value": 10
-            }
+              "value": 10,
+              "unit": "min"
+            },
+            "transport_mode": "walking"
           },
           {
             "catchment_id": "drive",
             "label": "15-min drive",
-            "transport_mode": "driving",
             "travel_time": {
-              "unit": "min",
-              "value": 15
-            }
+              "value": 15,
+              "unit": "min"
+            },
+            "transport_mode": "driving"
           }
         ],
+        "phone": "+31201234567",
+        "url": "https://acme.com/stores/amsterdam-flagship",
         "hours": {
-          "friday": "09:00-21:00",
           "monday": "09:00-21:00",
-          "saturday": "10:00-18:00",
-          "sunday": "12:00-17:00",
-          "thursday": "09:00-21:00",
           "tuesday": "09:00-21:00",
-          "wednesday": "09:00-21:00"
-        },
-        "location": {
-          "lat": 52.3676,
-          "lng": 4.9041
+          "wednesday": "09:00-21:00",
+          "thursday": "09:00-21:00",
+          "friday": "09:00-21:00",
+          "saturday": "10:00-18:00",
+          "sunday": "12:00-17:00"
         },
-        "name": "Amsterdam Flagship",
-        "phone": "+31201234567",
-        "store_id": "amsterdam-flagship",
         "tags": [
           "flagship",
           "pickup"
-        ],
-        "url": "https://acme.com/stores/amsterdam-flagship"
-      },
-      "description": "Urban store with walking and driving catchments"
+        ]
+      }
     },
     {
+      "description": "Suburban store with radius-based catchment",
       "data": {
+        "store_id": "warehouse-east",
+        "name": "East Warehouse Store",
+        "location": {
+          "lat": 52.2942,
+          "lng": 4.9581
+        },
         "address": {
+          "street": "Industrieweg 42",
           "city": "Amstelveen",
-          "country": "NL",
-          "postal_code": "1182 XX",
           "region": "NL-NH",
-          "street": "Industrieweg 42"
+          "postal_code": "1182 XX",
+          "country": "NL"
         },
         "catchments": [
           {
             "catchment_id": "local",
             "radius": {
-              "unit": "km",
-              "value": 10
+              "value": 10,
+              "unit": "km"
             }
           }
         ],
-        "location": {
-          "lat": 52.2942,
-          "lng": 4.9581
-        },
-        "name": "East Warehouse Store",
-        "store_id": "warehouse-east",
         "tags": [
           "warehouse",
           "pickup",
           "parking"
         ]
-      },
-      "description": "Suburban store with radius-based catchment"
+      }
     },
     {
+      "description": "Store with pre-computed trade area boundary",
       "data": {
+        "store_id": "brooklyn-heights",
+        "name": "Brooklyn Heights",
+        "location": {
+          "lat": 40.696,
+          "lng": -73.9936
+        },
         "address": {
+          "street": "100 Atlantic Ave",
           "city": "Brooklyn",
-          "country": "US",
-          "postal_code": "11201",
           "region": "US-NY",
-          "street": "100 Atlantic Ave"
+          "postal_code": "11201",
+          "country": "US"
         },
         "catchments": [
           {
             "catchment_id": "trade-area",
+            "label": "Primary trade area",
             "geometry": {
+              "type": "Polygon",
               "coordinates": [
                 [
                   [
@@ -124,135 +248,11 @@
                     40.68
                   ]
                 ]
-              ],
-              "type": "Polygon"
-            },
-            "label": "Primary trade area"
+              ]
+            }
           }
-        ],
-        "location": {
-          "lat": 40.696,
-          "lng": -73.9936
-        },
-        "name": "Brooklyn Heights",
-        "store_id": "brooklyn-heights"
-      },
-      "description": "Store with pre-computed trade area boundary"
-    }
-  ],
-  "properties": {
-    "address": {
-      "additionalProperties": false,
-      "description": "Structured address for display and geocoding fallback.",
-      "properties": {
-        "city": {
-          "description": "City name.",
-          "type": "string"
-        },
-        "country": {
-          "description": "ISO 3166-1 alpha-2 country code.",
-          "pattern": "^[A-Z]{2}$",
-          "type": "string"
-        },
-        "postal_code": {
-          "description": "Postal or ZIP code.",
-          "type": "string"
-        },
-        "region": {
-          "description": "State, province, or region. ISO 3166-2 subdivision code preferred (e.g., 'NL-NH', 'US-CA').",
-          "type": "string"
-        },
-        "street": {
-          "description": "Street address (e.g., '123 Main St').",
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "catchments": {
-      "description": "Catchment areas for this store. Each defines a reachable area using travel time (isochrone), simple radius, or pre-computed GeoJSON. Multiple catchments allow different modes \u2014 e.g., 15-minute drive AND 10-minute walk.",
-      "items": {
-        "$ref": "catchment.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "hours": {
-      "additionalProperties": {
-        "description": "Time range in HH:MM-HH:MM format (e.g., '09:00-21:00'). Use 'closed' for days the store is not open.",
-        "type": "string"
-      },
-      "description": "Operating hours. Keys are ISO day names (monday\u2013sunday), values are time ranges.",
-      "propertyNames": {
-        "enum": [
-          "monday",
-          "tuesday",
-          "wednesday",
-          "thursday",
-          "friday",
-          "saturday",
-          "sunday"
         ]
-      },
-      "type": "object"
-    },
-    "location": {
-      "additionalProperties": false,
-      "description": "Geographic coordinates of the store.",
-      "properties": {
-        "lat": {
-          "description": "Latitude in decimal degrees (WGS 84).",
-          "maximum": 90,
-          "minimum": -90,
-          "type": "number"
-        },
-        "lng": {
-          "description": "Longitude in decimal degrees (WGS 84).",
-          "maximum": 180,
-          "minimum": -180,
-          "type": "number"
-        }
-      },
-      "required": [
-        "lat",
-        "lng"
-      ],
-      "type": "object"
-    },
-    "name": {
-      "description": "Human-readable store name (e.g., 'Amsterdam Flagship', 'Brooklyn Heights').",
-      "type": "string"
-    },
-    "phone": {
-      "description": "Store phone number in E.164 format (e.g., '+31201234567').",
-      "type": "string"
-    },
-    "store_id": {
-      "description": "Unique identifier for this store. Used to reference specific stores in targeting, inventory feeds, and creative templates.",
-      "type": "string"
-    },
-    "tags": {
-      "description": "Tags for filtering stores in targeting and creative selection (e.g., 'flagship', 'pickup', 'pharmacy').",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "url": {
-      "description": "Store-specific page URL (e.g., store locator detail page).",
-      "format": "uri",
-      "type": "string"
+      }
     }
-  },
-  "required": [
-    "store_id",
-    "name",
-    "location"
-  ],
-  "title": "Store Item",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/targeting.json b/schemas/cache/core/targeting.json
index a17346117..3510891fe 100644
--- a/schemas/cache/core/targeting.json
+++ b/schemas/cache/core/targeting.json
@@ -1,230 +1,394 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Targeting Overlay",
   "description": "Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).",
+  "type": "object",
   "properties": {
-    "age_restriction": {
-      "additionalProperties": false,
-      "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
-      "properties": {
-        "accepted_methods": {
-          "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
-          "items": {
-            "$ref": "../enums/age-verification-method.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "min": {
-          "description": "Minimum age required",
-          "maximum": 99,
-          "minimum": 13,
-          "type": "integer"
-        },
-        "verification_required": {
-          "default": false,
-          "description": "Whether verified age (not inferred) is required for compliance",
-          "type": "boolean"
-        }
-      },
-      "required": [
-        "min"
-      ],
-      "type": "object"
-    },
-    "audience_exclude": {
-      "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "audience_include": {
-      "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "axe_exclude_segment": {
-      "deprecated": true,
-      "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
-      "type": "string"
-    },
-    "axe_include_segment": {
-      "deprecated": true,
-      "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
-      "type": "string"
-    },
-    "daypart_targets": {
-      "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
-      "items": {
-        "$ref": "daypart-target.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "device_platform": {
-      "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
-      "items": {
-        "$ref": "../enums/device-platform.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "device_type": {
-      "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+    "geo_countries": {
+      "type": "array",
+      "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
       "items": {
-        "$ref": "../enums/device-type.json"
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "device_type_exclude": {
-      "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+    "geo_countries_exclude": {
+      "type": "array",
+      "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
       "items": {
-        "$ref": "../enums/device-type.json"
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "frequency_cap": {
-      "$ref": "frequency-cap.json"
-    },
-    "geo_countries": {
-      "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+    "geo_regions": {
+      "type": "array",
+      "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
       "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
+        "type": "string",
+        "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "geo_countries_exclude": {
-      "description": "Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+    "geo_regions_exclude": {
+      "type": "array",
+      "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
       "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
+        "type": "string",
+        "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "geo_metros": {
+      "type": "array",
       "description": "Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "system": {
             "$ref": "../enums/metro-system.json",
             "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')"
           },
           "values": {
+            "type": "array",
             "description": "Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
             "items": {
               "type": "string"
             },
-            "minItems": 1,
-            "type": "array"
+            "minItems": 1
           }
         },
         "required": [
           "system",
           "values"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "geo_metros_exclude": {
+      "type": "array",
       "description": "Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "system": {
             "$ref": "../enums/metro-system.json",
             "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')"
           },
           "values": {
+            "type": "array",
             "description": "Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
             "items": {
               "type": "string"
             },
-            "minItems": 1,
-            "type": "array"
+            "minItems": 1
           }
         },
         "required": [
           "system",
           "values"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "geo_postal_areas": {
+      "type": "array",
       "description": "Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "system": {
             "$ref": "../enums/postal-system.json",
             "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision."
           },
           "values": {
+            "type": "array",
             "description": "Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
             "items": {
               "type": "string"
             },
-            "minItems": 1,
-            "type": "array"
+            "minItems": 1
           }
         },
         "required": [
           "system",
           "values"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "geo_postal_areas_exclude": {
+      "type": "array",
       "description": "Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "system": {
             "$ref": "../enums/postal-system.json",
             "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision."
           },
           "values": {
+            "type": "array",
             "description": "Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
             "items": {
               "type": "string"
             },
-            "minItems": 1,
-            "type": "array"
+            "minItems": 1
           }
         },
         "required": [
           "system",
           "values"
         ],
-        "type": "object"
+        "additionalProperties": false
+      },
+      "minItems": 1
+    },
+    "daypart_targets": {
+      "type": "array",
+      "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
+      "items": {
+        "$ref": "daypart-target.json"
+      },
+      "minItems": 1
+    },
+    "axe_include_segment": {
+      "type": "string",
+      "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.",
+      "deprecated": true
+    },
+    "axe_exclude_segment": {
+      "type": "string",
+      "description": "Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.",
+      "deprecated": true
+    },
+    "audience_include": {
+      "type": "array",
+      "description": "Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Not for lookalike expansion \u2014 express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.",
+      "items": {
+        "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "audience_exclude": {
+      "type": "array",
+      "description": "Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account \u2014 audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "frequency_cap": {
+      "$ref": "frequency-cap.json"
+    },
+    "property_list": {
+      "$ref": "property-list-ref.json",
+      "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false."
+    },
+    "collection_list": {
+      "$ref": "collection-list-ref.json",
+      "description": "Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities."
+    },
+    "collection_list_exclude": {
+      "$ref": "collection-list-ref.json",
+      "description": "Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities."
+    },
+    "age_restriction": {
+      "type": "object",
+      "description": "Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.",
+      "properties": {
+        "min": {
+          "type": "integer",
+          "minimum": 13,
+          "maximum": 99,
+          "description": "Minimum age required"
+        },
+        "verification_required": {
+          "type": "boolean",
+          "default": false,
+          "description": "Whether verified age (not inferred) is required for compliance"
+        },
+        "accepted_methods": {
+          "type": "array",
+          "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
+          "items": {
+            "$ref": "../enums/age-verification-method.json"
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "min"
+      ],
+      "additionalProperties": false
+    },
+    "device_platform": {
+      "type": "array",
+      "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
+      "items": {
+        "$ref": "../enums/device-platform.json"
+      },
+      "minItems": 1
+    },
+    "device_type": {
+      "type": "array",
+      "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
+      "items": {
+        "$ref": "../enums/device-type.json"
+      },
+      "minItems": 1
+    },
+    "device_type_exclude": {
+      "type": "array",
+      "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
+      "items": {
+        "$ref": "../enums/device-type.json"
+      },
+      "minItems": 1
+    },
+    "store_catchments": {
+      "type": "array",
+      "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "catalog_id": {
+            "type": "string",
+            "description": "Synced store-type catalog ID from sync_catalogs."
+          },
+          "store_ids": {
+            "type": "array",
+            "description": "Filter to specific stores within the catalog. Omit to target all stores.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "catchment_ids": {
+            "type": "array",
+            "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "catalog_id"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
     },
     "geo_proximity": {
+      "type": "array",
       "description": "Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics \u2014 a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
+        "properties": {
+          "lat": {
+            "type": "number",
+            "minimum": -90,
+            "maximum": 90,
+            "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+          },
+          "lng": {
+            "type": "number",
+            "minimum": -180,
+            "maximum": 180,
+            "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods."
+          },
+          "label": {
+            "type": "string",
+            "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area')."
+          },
+          "travel_time": {
+            "type": "object",
+            "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
+            "properties": {
+              "value": {
+                "type": "number",
+                "minimum": 1,
+                "description": "Travel time limit."
+              },
+              "unit": {
+                "type": "string",
+                "enum": [
+                  "min",
+                  "hr"
+                ],
+                "description": "Time unit."
+              }
+            },
+            "required": [
+              "value",
+              "unit"
+            ],
+            "additionalProperties": false
+          },
+          "transport_mode": {
+            "$ref": "../enums/transport-mode.json",
+            "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
+          },
+          "radius": {
+            "type": "object",
+            "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
+            "properties": {
+              "value": {
+                "type": "number",
+                "exclusiveMinimum": 0,
+                "description": "Radius distance."
+              },
+              "unit": {
+                "$ref": "../enums/distance-unit.json",
+                "description": "Distance unit."
+              }
+            },
+            "required": [
+              "value",
+              "unit"
+            ],
+            "additionalProperties": false
+          },
+          "geometry": {
+            "type": "object",
+            "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
+            "properties": {
+              "type": {
+                "type": "string",
+                "enum": [
+                  "Polygon",
+                  "MultiPolygon"
+                ],
+                "description": "GeoJSON geometry type."
+              },
+              "coordinates": {
+                "type": "array",
+                "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons."
+              }
+            },
+            "required": [
+              "type",
+              "coordinates"
+            ],
+            "additionalProperties": false
+          },
+          "ext": {
+            "$ref": "ext.json"
+          }
+        },
         "oneOf": [
           {
+            "required": [
+              "lat",
+              "lng",
+              "travel_time",
+              "transport_mode"
+            ],
             "not": {
               "anyOf": [
                 {
@@ -238,15 +402,14 @@
                   ]
                 }
               ]
-            },
+            }
+          },
+          {
             "required": [
               "lat",
               "lng",
-              "travel_time",
-              "transport_mode"
-            ]
-          },
-          {
+              "radius"
+            ],
             "not": {
               "anyOf": [
                 {
@@ -260,14 +423,12 @@
                   ]
                 }
               ]
-            },
-            "required": [
-              "lat",
-              "lng",
-              "radius"
-            ]
+            }
           },
           {
+            "required": [
+              "geometry"
+            ],
             "not": {
               "anyOf": [
                 {
@@ -281,238 +442,85 @@
                   ]
                 }
               ]
-            },
-            "required": [
-              "geometry"
-            ]
+            }
           }
         ],
-        "properties": {
-          "ext": {
-            "$ref": "ext.json"
-          },
-          "geometry": {
-            "additionalProperties": false,
-            "description": "Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.",
-            "properties": {
-              "coordinates": {
-                "description": "GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.",
-                "type": "array"
-              },
-              "type": {
-                "description": "GeoJSON geometry type.",
-                "enum": [
-                  "Polygon",
-                  "MultiPolygon"
-                ],
-                "type": "string"
-              }
-            },
-            "required": [
-              "type",
-              "coordinates"
-            ],
-            "type": "object"
-          },
-          "label": {
-            "description": "Human-readable label for this entry (e.g., 'D\u00fcsseldorf', 'Heathrow Airport', 'Primary trade area').",
-            "type": "string"
-          },
-          "lat": {
-            "description": "Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.",
-            "maximum": 90,
-            "minimum": -90,
-            "type": "number"
-          },
-          "lng": {
-            "description": "Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.",
-            "maximum": 180,
-            "minimum": -180,
-            "type": "number"
-          },
-          "radius": {
-            "additionalProperties": false,
-            "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
-            "properties": {
-              "unit": {
-                "$ref": "../enums/distance-unit.json",
-                "description": "Distance unit."
-              },
-              "value": {
-                "description": "Radius distance.",
-                "exclusiveMinimum": 0,
-                "type": "number"
-              }
-            },
-            "required": [
-              "value",
-              "unit"
-            ],
-            "type": "object"
-          },
-          "transport_mode": {
-            "$ref": "../enums/transport-mode.json",
-            "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
-          },
-          "travel_time": {
-            "additionalProperties": false,
-            "description": "Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.",
-            "properties": {
-              "unit": {
-                "description": "Time unit.",
-                "enum": [
-                  "min",
-                  "hr"
-                ],
-                "type": "string"
-              },
-              "value": {
-                "description": "Travel time limit.",
-                "minimum": 1,
-                "type": "number"
-              }
-            },
-            "required": [
-              "value",
-              "unit"
-            ],
-            "type": "object"
-          }
-        },
-        "type": "object"
+        "additionalProperties": true
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "geo_regions": {
-      "description": "Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
-      "items": {
-        "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$",
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "geo_regions_exclude": {
-      "description": "Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+    "language": {
+      "type": "array",
+      "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
       "items": {
-        "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$",
-        "type": "string"
+        "type": "string",
+        "pattern": "^[a-z]{2}$"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "keyword_targets": {
+      "type": "array",
       "description": "Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) \u2014 the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
-          "bid_price": {
-            "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
-            "minimum": 0,
-            "type": "number"
-          },
           "keyword": {
-            "description": "The keyword to target",
+            "type": "string",
             "minLength": 1,
-            "type": "string"
+            "description": "The keyword to target"
           },
           "match_type": {
-            "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly",
+            "type": "string",
             "enum": [
               "broad",
               "phrase",
               "exact"
             ],
-            "type": "string"
+            "description": "Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly"
+          },
+          "bid_price": {
+            "type": "number",
+            "minimum": 0,
+            "description": "Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies."
           }
         },
         "required": [
           "keyword",
           "match_type"
         ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "language": {
-      "description": "Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
-      "items": {
-        "pattern": "^[a-z]{2}$",
-        "type": "string"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "negative_keywords": {
+      "type": "array",
       "description": "Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "keyword": {
-            "description": "The keyword to exclude",
+            "type": "string",
             "minLength": 1,
-            "type": "string"
+            "description": "The keyword to exclude"
           },
           "match_type": {
-            "description": "Match type for exclusion",
+            "type": "string",
             "enum": [
               "broad",
               "phrase",
               "exact"
             ],
-            "type": "string"
+            "description": "Match type for exclusion"
           }
         },
         "required": [
           "keyword",
           "match_type"
         ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "property_list": {
-      "$ref": "property-list-ref.json",
-      "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false."
-    },
-    "store_catchments": {
-      "description": "Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.",
-      "items": {
-        "additionalProperties": true,
-        "properties": {
-          "catalog_id": {
-            "description": "Synced store-type catalog ID from sync_catalogs.",
-            "type": "string"
-          },
-          "catchment_ids": {
-            "description": "Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
-          },
-          "store_ids": {
-            "description": "Filter to specific stores within the catalog. Omit to target all stores.",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
-          }
-        },
-        "required": [
-          "catalog_id"
-        ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     }
   },
-  "title": "Targeting Overlay",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/tasks-get-request.json b/schemas/cache/core/tasks-get-request.json
new file mode 100644
index 000000000..ee7d0a28c
--- /dev/null
+++ b/schemas/cache/core/tasks-get-request.json
@@ -0,0 +1,48 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks Get Request",
+  "description": "Request parameters for retrieving a specific task by ID with optional conversation history across all AdCP domains",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "task_id": {
+      "type": "string",
+      "description": "Unique identifier of the task to retrieve"
+    },
+    "include_history": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include full conversation history for this task (may increase response size)"
+    },
+    "context": {
+      "$ref": "context.json"
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
+  "required": [
+    "task_id"
+  ],
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Check task status",
+      "data": {
+        "task_id": "task_456"
+      }
+    },
+    {
+      "description": "Get task with full conversation history",
+      "data": {
+        "task_id": "task_123",
+        "include_history": true
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/core/tasks-get-response.json b/schemas/cache/core/tasks-get-response.json
new file mode 100644
index 000000000..c89092acb
--- /dev/null
+++ b/schemas/cache/core/tasks-get-response.json
@@ -0,0 +1,157 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks Get Response",
+  "description": "Response containing detailed information about a specific task including status and optional conversation history across all AdCP protocols",
+  "type": "object",
+  "properties": {
+    "task_id": {
+      "type": "string",
+      "description": "Unique identifier for this task"
+    },
+    "task_type": {
+      "$ref": "../enums/task-type.json",
+      "description": "Type of AdCP operation"
+    },
+    "protocol": {
+      "$ref": "../enums/adcp-protocol.json",
+      "description": "AdCP protocol this task belongs to"
+    },
+    "status": {
+      "$ref": "../enums/task-status.json",
+      "description": "Current task status"
+    },
+    "created_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the task was initially created (ISO 8601)"
+    },
+    "updated_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the task was last updated (ISO 8601)"
+    },
+    "completed_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the task completed (ISO 8601, only for completed/failed/canceled tasks)"
+    },
+    "has_webhook": {
+      "type": "boolean",
+      "description": "Whether this task has webhook configuration"
+    },
+    "progress": {
+      "type": "object",
+      "description": "Progress information for long-running tasks",
+      "properties": {
+        "percentage": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 100,
+          "description": "Completion percentage (0-100)"
+        },
+        "current_step": {
+          "type": "string",
+          "description": "Current step or phase of the operation"
+        },
+        "total_steps": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Total number of steps in the operation"
+        },
+        "step_number": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Current step number"
+        }
+      },
+      "additionalProperties": true
+    },
+    "error": {
+      "type": "object",
+      "description": "Error details for failed tasks",
+      "properties": {
+        "code": {
+          "type": "string",
+          "description": "Error code for programmatic handling"
+        },
+        "message": {
+          "type": "string",
+          "description": "Detailed error message"
+        },
+        "details": {
+          "type": "object",
+          "description": "Additional error context",
+          "properties": {
+            "protocol": {
+              "$ref": "../enums/adcp-protocol.json",
+              "description": "AdCP protocol where error occurred"
+            },
+            "operation": {
+              "type": "string",
+              "description": "Specific operation that failed"
+            },
+            "specific_context": {
+              "type": "object",
+              "description": "Domain-specific error context",
+              "additionalProperties": true
+            }
+          },
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "code",
+        "message"
+      ],
+      "additionalProperties": true
+    },
+    "history": {
+      "type": "array",
+      "description": "Complete conversation history for this task (only included if include_history was true in request)",
+      "items": {
+        "type": "object",
+        "properties": {
+          "timestamp": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When this exchange occurred (ISO 8601)"
+          },
+          "type": {
+            "type": "string",
+            "enum": [
+              "request",
+              "response"
+            ],
+            "description": "Whether this was a request from client or response from server"
+          },
+          "data": {
+            "type": "object",
+            "description": "The full request or response payload",
+            "additionalProperties": true
+          }
+        },
+        "required": [
+          "timestamp",
+          "type",
+          "data"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "context": {
+      "$ref": "context.json"
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
+  "required": [
+    "task_id",
+    "task_type",
+    "protocol",
+    "status",
+    "created_at",
+    "updated_at"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/tasks-list-request.json b/schemas/cache/core/tasks-list-request.json
new file mode 100644
index 000000000..af3b4ac71
--- /dev/null
+++ b/schemas/cache/core/tasks-list-request.json
@@ -0,0 +1,184 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks List Request",
+  "description": "Request parameters for listing and filtering async tasks across all AdCP protocols with state reconciliation capabilities",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "filters": {
+      "type": "object",
+      "description": "Filter criteria for querying tasks",
+      "properties": {
+        "protocol": {
+          "$ref": "../enums/adcp-protocol.json",
+          "description": "Filter by single AdCP protocol"
+        },
+        "protocols": {
+          "type": "array",
+          "description": "Filter by multiple AdCP protocols",
+          "items": {
+            "$ref": "../enums/adcp-protocol.json"
+          },
+          "minItems": 1
+        },
+        "status": {
+          "$ref": "../enums/task-status.json",
+          "description": "Filter by single task status"
+        },
+        "statuses": {
+          "type": "array",
+          "description": "Filter by multiple task statuses",
+          "items": {
+            "$ref": "../enums/task-status.json"
+          },
+          "minItems": 1
+        },
+        "task_type": {
+          "$ref": "../enums/task-type.json",
+          "description": "Filter by single task type"
+        },
+        "task_types": {
+          "type": "array",
+          "description": "Filter by multiple task types",
+          "items": {
+            "$ref": "../enums/task-type.json"
+          },
+          "minItems": 1
+        },
+        "created_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks created after this date (ISO 8601)"
+        },
+        "created_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks created before this date (ISO 8601)"
+        },
+        "updated_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks last updated after this date (ISO 8601)"
+        },
+        "updated_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Filter tasks last updated before this date (ISO 8601)"
+        },
+        "task_ids": {
+          "type": "array",
+          "description": "Filter by specific task IDs",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1,
+          "maxItems": 100
+        },
+        "context_contains": {
+          "type": "string",
+          "description": "Filter tasks where context contains this text (searches media_buy_id, signal_id, etc.)"
+        },
+        "has_webhook": {
+          "type": "boolean",
+          "description": "Filter tasks that have webhook configuration when true"
+        }
+      },
+      "additionalProperties": true
+    },
+    "sort": {
+      "type": "object",
+      "description": "Sorting parameters",
+      "properties": {
+        "field": {
+          "type": "string",
+          "enum": [
+            "created_at",
+            "updated_at",
+            "status",
+            "task_type",
+            "protocol"
+          ],
+          "default": "created_at",
+          "description": "Field to sort by"
+        },
+        "direction": {
+          "$ref": "../enums/sort-direction.json",
+          "default": "desc",
+          "description": "Sort direction"
+        }
+      },
+      "additionalProperties": true
+    },
+    "pagination": {
+      "$ref": "pagination-request.json"
+    },
+    "include_history": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include full conversation history for each task (may significantly increase response size)"
+    },
+    "context": {
+      "$ref": "context.json"
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "List all pending tasks across protocols",
+      "data": {
+        "filters": {
+          "statuses": [
+            "submitted",
+            "working",
+            "input-required"
+          ]
+        }
+      }
+    },
+    {
+      "description": "Find media-buy tasks requiring attention",
+      "data": {
+        "filters": {
+          "protocol": "media-buy",
+          "statuses": [
+            "input-required",
+            "failed"
+          ]
+        },
+        "sort": {
+          "field": "updated_at",
+          "direction": "asc"
+        }
+      }
+    },
+    {
+      "description": "Recent signal operations",
+      "data": {
+        "filters": {
+          "protocol": "signals",
+          "created_after": "2025-01-01T00:00:00Z"
+        },
+        "pagination": {
+          "max_results": 20
+        }
+      }
+    },
+    {
+      "description": "State reconciliation for specific campaign",
+      "data": {
+        "filters": {
+          "context_contains": "nike_q1_2025"
+        },
+        "include_history": true
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/core/tasks-list-response.json b/schemas/cache/core/tasks-list-response.json
new file mode 100644
index 000000000..9f698c920
--- /dev/null
+++ b/schemas/cache/core/tasks-list-response.json
@@ -0,0 +1,151 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Tasks List Response",
+  "description": "Response from task listing query with filtered results and state reconciliation data across all AdCP domains",
+  "type": "object",
+  "properties": {
+    "query_summary": {
+      "type": "object",
+      "description": "Summary of the query that was executed",
+      "properties": {
+        "total_matching": {
+          "type": "integer",
+          "description": "Total number of tasks matching filters (across all pages)",
+          "minimum": 0
+        },
+        "returned": {
+          "type": "integer",
+          "description": "Number of tasks returned in this response",
+          "minimum": 0
+        },
+        "domain_breakdown": {
+          "type": "object",
+          "description": "Count of tasks by domain",
+          "properties": {
+            "media-buy": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of media-buy tasks in results"
+            },
+            "signals": {
+              "type": "integer",
+              "minimum": 0,
+              "description": "Number of signals tasks in results"
+            }
+          },
+          "additionalProperties": true
+        },
+        "status_breakdown": {
+          "type": "object",
+          "description": "Count of tasks by status",
+          "additionalProperties": {
+            "type": "integer",
+            "minimum": 0
+          }
+        },
+        "filters_applied": {
+          "type": "array",
+          "description": "List of filters that were applied to the query",
+          "items": {
+            "type": "string"
+          }
+        },
+        "sort_applied": {
+          "type": "object",
+          "description": "Sort order that was applied",
+          "properties": {
+            "field": {
+              "type": "string"
+            },
+            "direction": {
+              "type": "string",
+              "enum": [
+                "asc",
+                "desc"
+              ]
+            }
+          },
+          "required": [
+            "field",
+            "direction"
+          ],
+          "additionalProperties": true
+        }
+      },
+      "required": [],
+      "additionalProperties": true
+    },
+    "tasks": {
+      "type": "array",
+      "description": "Array of tasks matching the query criteria",
+      "items": {
+        "type": "object",
+        "properties": {
+          "task_id": {
+            "type": "string",
+            "description": "Unique identifier for this task"
+          },
+          "task_type": {
+            "$ref": "../enums/task-type.json",
+            "description": "Type of AdCP operation"
+          },
+          "domain": {
+            "type": "string",
+            "description": "AdCP domain this task belongs to",
+            "enum": [
+              "media-buy",
+              "signals"
+            ]
+          },
+          "status": {
+            "$ref": "../enums/task-status.json",
+            "description": "Current task status"
+          },
+          "created_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the task was initially created (ISO 8601)"
+          },
+          "updated_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the task was last updated (ISO 8601)"
+          },
+          "completed_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the task completed (ISO 8601, only for completed/failed/canceled tasks)"
+          },
+          "has_webhook": {
+            "type": "boolean",
+            "description": "Whether this task has webhook configuration"
+          }
+        },
+        "required": [
+          "task_id",
+          "task_type",
+          "domain",
+          "status",
+          "created_at",
+          "updated_at"
+        ],
+        "additionalProperties": true
+      }
+    },
+    "pagination": {
+      "$ref": "pagination-response.json"
+    },
+    "context": {
+      "$ref": "context.json"
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
+  "required": [
+    "query_summary",
+    "tasks",
+    "pagination"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/user-match.json b/schemas/cache/core/user-match.json
index 681811d1d..e886b7455 100644
--- a/schemas/cache/core/user-match.json
+++ b/schemas/cache/core/user-match.json
@@ -1,6 +1,62 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "User Match",
+  "description": "User identifiers for attribution matching. Supports universal IDs, hashed identifiers, click IDs, and probabilistic matching.",
+  "type": "object",
+  "properties": {
+    "uids": {
+      "type": "array",
+      "description": "Universal ID values for user matching",
+      "items": {
+        "type": "object",
+        "properties": {
+          "type": {
+            "$ref": "../enums/uid-type.json",
+            "description": "Universal ID type"
+          },
+          "value": {
+            "type": "string",
+            "description": "Universal ID value"
+          }
+        },
+        "required": [
+          "type",
+          "value"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "hashed_email": {
+      "type": "string",
+      "description": "SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.",
+      "pattern": "^[a-f0-9]{64}$"
+    },
+    "hashed_phone": {
+      "type": "string",
+      "description": "SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.",
+      "pattern": "^[a-f0-9]{64}$"
+    },
+    "click_id": {
+      "type": "string",
+      "description": "Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)"
+    },
+    "click_id_type": {
+      "type": "string",
+      "description": "Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)"
+    },
+    "client_ip": {
+      "type": "string",
+      "description": "Client IP address for probabilistic matching"
+    },
+    "client_user_agent": {
+      "type": "string",
+      "description": "Client user agent string for probabilistic matching"
+    },
+    "ext": {
+      "$ref": "ext.json"
+    }
+  },
   "anyOf": [
     {
       "required": [
@@ -29,61 +85,5 @@
       ]
     }
   ],
-  "description": "User identifiers for attribution matching. Supports universal IDs, hashed identifiers, click IDs, and probabilistic matching.",
-  "properties": {
-    "click_id": {
-      "description": "Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)",
-      "type": "string"
-    },
-    "click_id_type": {
-      "description": "Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)",
-      "type": "string"
-    },
-    "client_ip": {
-      "description": "Client IP address for probabilistic matching",
-      "type": "string"
-    },
-    "client_user_agent": {
-      "description": "Client user agent string for probabilistic matching",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "hashed_email": {
-      "description": "SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.",
-      "pattern": "^[a-f0-9]{64}$",
-      "type": "string"
-    },
-    "hashed_phone": {
-      "description": "SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.",
-      "pattern": "^[a-f0-9]{64}$",
-      "type": "string"
-    },
-    "uids": {
-      "description": "Universal ID values for user matching",
-      "items": {
-        "additionalProperties": true,
-        "properties": {
-          "type": {
-            "$ref": "../enums/uid-type.json",
-            "description": "Universal ID type"
-          },
-          "value": {
-            "description": "Universal ID value",
-            "type": "string"
-          }
-        },
-        "required": [
-          "type",
-          "value"
-        ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    }
-  },
-  "title": "User Match",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/vehicle-item.json b/schemas/cache/core/vehicle-item.json
index 0bee4d6c2..7e188db83 100644
--- a/schemas/cache/core/vehicle-item.json
+++ b/schemas/cache/core/vehicle-item.json
@@ -1,72 +1,77 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Vehicle Item",
   "description": "A vehicle listing within a vehicle-type catalog. Carries the make/model, pricing, and specification data that platforms use for automotive inventory ads. Maps to Meta Automotive Inventory Ads, Microsoft Auto Inventory feeds, Google vehicle ads, and similar formats.",
-  "examples": [
-    {
-      "data": {
-        "body_style": "sedan",
-        "condition": "new",
-        "exterior_color": "Lunar Silver Metallic",
-        "fuel_type": "gasoline",
-        "image_url": "https://images.acmemotors.com/civic-ex-2024.jpg",
-        "make": "Honda",
-        "model": "Civic",
-        "price": {
-          "amount": 28500,
-          "currency": "USD"
-        },
-        "tags": [
-          "new-arrival"
-        ],
-        "title": "2024 Honda Civic EX Sedan",
-        "transmission": "cvt",
-        "trim": "EX",
-        "url": "https://acmemotors.com/inventory/civic-001",
-        "vehicle_id": "dlr-2024-civic-001",
-        "year": 2024
-      },
-      "description": "New sedan at dealership"
+  "type": "object",
+  "properties": {
+    "vehicle_id": {
+      "type": "string",
+      "description": "Unique identifier for this vehicle listing."
     },
-    {
-      "data": {
-        "body_style": "suv",
-        "condition": "used",
-        "fuel_type": "electric",
-        "make": "Tesla",
-        "mileage": {
-          "unit": "mi",
-          "value": 28000
-        },
-        "model": "Model Y",
-        "price": {
-          "amount": 38900,
-          "currency": "USD"
+    "title": {
+      "type": "string",
+      "description": "Listing title (e.g., '2024 Honda Civic EX Sedan')."
+    },
+    "make": {
+      "type": "string",
+      "description": "Vehicle manufacturer (e.g., 'Honda', 'Ford', 'BMW')."
+    },
+    "model": {
+      "type": "string",
+      "description": "Vehicle model (e.g., 'Civic', 'F-150', 'X5')."
+    },
+    "year": {
+      "type": "integer",
+      "minimum": 1900,
+      "description": "Model year."
+    },
+    "price": {
+      "$ref": "price.json",
+      "description": "Vehicle price."
+    },
+    "condition": {
+      "type": "string",
+      "enum": [
+        "new",
+        "used",
+        "certified_pre_owned"
+      ],
+      "description": "Vehicle condition."
+    },
+    "vin": {
+      "type": "string",
+      "description": "Vehicle Identification Number (17-character VIN)."
+    },
+    "trim": {
+      "type": "string",
+      "description": "Trim level (e.g., 'EX', 'Limited', 'Sport')."
+    },
+    "mileage": {
+      "type": "object",
+      "description": "Odometer reading.",
+      "properties": {
+        "value": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Mileage value."
         },
-        "tags": [
-          "low-mileage",
-          "one-owner"
-        ],
-        "title": "2022 Tesla Model Y Long Range",
-        "url": "https://acmemotors.com/inventory/my-042",
-        "vehicle_id": "dlr-2022-my-042",
-        "vin": "5YJYGDEE4NF123456",
-        "year": 2022
-      },
-      "description": "Used electric SUV"
-    }
-  ],
-  "properties": {
-    "assets": {
-      "description": "Typed creative asset pools for this vehicle. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-      "items": {
-        "$ref": "offering-asset-group.json"
+        "unit": {
+          "type": "string",
+          "enum": [
+            "km",
+            "mi"
+          ],
+          "description": "Distance unit."
+        }
       },
-      "minItems": 1,
-      "type": "array"
+      "required": [
+        "value",
+        "unit"
+      ],
+      "additionalProperties": false
     },
     "body_style": {
-      "description": "Vehicle body style.",
+      "type": "string",
       "enum": [
         "sedan",
         "suv",
@@ -77,26 +82,19 @@
         "van",
         "hatchback"
       ],
-      "type": "string"
+      "description": "Vehicle body style."
     },
-    "condition": {
-      "description": "Vehicle condition.",
+    "transmission": {
+      "type": "string",
       "enum": [
-        "new",
-        "used",
-        "certified_pre_owned"
+        "automatic",
+        "manual",
+        "cvt"
       ],
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "ext.json"
-    },
-    "exterior_color": {
-      "description": "Exterior color.",
-      "type": "string"
+      "description": "Transmission type."
     },
     "fuel_type": {
-      "description": "Fuel or powertrain type.",
+      "type": "string",
       "enum": [
         "gasoline",
         "diesel",
@@ -104,118 +102,67 @@
         "hybrid",
         "plug_in_hybrid"
       ],
-      "type": "string"
+      "description": "Fuel or powertrain type."
     },
-    "image_url": {
-      "description": "Primary vehicle image URL.",
-      "format": "uri",
-      "type": "string"
+    "exterior_color": {
+      "type": "string",
+      "description": "Exterior color."
     },
     "interior_color": {
-      "description": "Interior color.",
-      "type": "string"
+      "type": "string",
+      "description": "Interior color."
     },
     "location": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Dealer or vehicle location.",
       "properties": {
         "lat": {
-          "description": "Latitude in decimal degrees (WGS 84).",
-          "maximum": 90,
+          "type": "number",
           "minimum": -90,
-          "type": "number"
+          "maximum": 90,
+          "description": "Latitude in decimal degrees (WGS 84)."
         },
         "lng": {
-          "description": "Longitude in decimal degrees (WGS 84).",
-          "maximum": 180,
+          "type": "number",
           "minimum": -180,
-          "type": "number"
+          "maximum": 180,
+          "description": "Longitude in decimal degrees (WGS 84)."
         }
       },
       "required": [
         "lat",
         "lng"
       ],
-      "type": "object"
-    },
-    "make": {
-      "description": "Vehicle manufacturer (e.g., 'Honda', 'Ford', 'BMW').",
-      "type": "string"
+      "additionalProperties": false
     },
-    "mileage": {
-      "additionalProperties": false,
-      "description": "Odometer reading.",
-      "properties": {
-        "unit": {
-          "description": "Distance unit.",
-          "enum": [
-            "km",
-            "mi"
-          ],
-          "type": "string"
-        },
-        "value": {
-          "description": "Mileage value.",
-          "minimum": 0,
-          "type": "number"
-        }
-      },
-      "required": [
-        "value",
-        "unit"
-      ],
-      "type": "object"
-    },
-    "model": {
-      "description": "Vehicle model (e.g., 'Civic', 'F-150', 'X5').",
-      "type": "string"
+    "image_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Primary vehicle image URL."
     },
-    "price": {
-      "$ref": "price.json",
-      "description": "Vehicle price."
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Vehicle listing page URL."
     },
     "tags": {
+      "type": "array",
       "description": "Tags for filtering (e.g., 'low-mileage', 'one-owner', 'dealer-certified').",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "title": {
-      "description": "Listing title (e.g., '2024 Honda Civic EX Sedan').",
-      "type": "string"
-    },
-    "transmission": {
-      "description": "Transmission type.",
-      "enum": [
-        "automatic",
-        "manual",
-        "cvt"
-      ],
-      "type": "string"
+      "minItems": 1
     },
-    "trim": {
-      "description": "Trim level (e.g., 'EX', 'Limited', 'Sport').",
-      "type": "string"
-    },
-    "url": {
-      "description": "Vehicle listing page URL.",
-      "format": "uri",
-      "type": "string"
-    },
-    "vehicle_id": {
-      "description": "Unique identifier for this vehicle listing.",
-      "type": "string"
-    },
-    "vin": {
-      "description": "Vehicle Identification Number (17-character VIN).",
-      "type": "string"
+    "assets": {
+      "type": "array",
+      "description": "Typed creative asset pools for this vehicle. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+      "items": {
+        "$ref": "offering-asset-group.json"
+      },
+      "minItems": 1
     },
-    "year": {
-      "description": "Model year.",
-      "minimum": 1900,
-      "type": "integer"
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -225,6 +172,59 @@
     "model",
     "year"
   ],
-  "title": "Vehicle Item",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "New sedan at dealership",
+      "data": {
+        "vehicle_id": "dlr-2024-civic-001",
+        "title": "2024 Honda Civic EX Sedan",
+        "make": "Honda",
+        "model": "Civic",
+        "year": 2024,
+        "trim": "EX",
+        "price": {
+          "amount": 28500,
+          "currency": "USD"
+        },
+        "condition": "new",
+        "body_style": "sedan",
+        "transmission": "cvt",
+        "fuel_type": "gasoline",
+        "exterior_color": "Lunar Silver Metallic",
+        "image_url": "https://images.acmemotors.com/civic-ex-2024.jpg",
+        "url": "https://acmemotors.com/inventory/civic-001",
+        "tags": [
+          "new-arrival"
+        ]
+      }
+    },
+    {
+      "description": "Used electric SUV",
+      "data": {
+        "vehicle_id": "dlr-2022-my-042",
+        "title": "2022 Tesla Model Y Long Range",
+        "make": "Tesla",
+        "model": "Model Y",
+        "year": 2022,
+        "price": {
+          "amount": 38900,
+          "currency": "USD"
+        },
+        "condition": "used",
+        "vin": "5YJYGDEE4NF123456",
+        "mileage": {
+          "value": 28000,
+          "unit": "mi"
+        },
+        "body_style": "suv",
+        "fuel_type": "electric",
+        "url": "https://acmemotors.com/inventory/my-042",
+        "tags": [
+          "low-mileage",
+          "one-owner"
+        ]
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/core/vendor-pricing-option.json b/schemas/cache/core/vendor-pricing-option.json
new file mode 100644
index 000000000..778137377
--- /dev/null
+++ b/schemas/cache/core/vendor-pricing-option.json
@@ -0,0 +1,22 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Vendor Pricing Option",
+  "description": "A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array \u2014 vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).",
+  "allOf": [
+    {
+      "type": "object",
+      "properties": {
+        "pricing_option_id": {
+          "type": "string",
+          "description": "Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied."
+        }
+      },
+      "required": [
+        "pricing_option_id"
+      ]
+    },
+    {
+      "$ref": "signal-pricing.json"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/creative/asset-types/index.json b/schemas/cache/creative/asset-types/index.json
index 71700c073..eeb0265f4 100644
--- a/schemas/cache/creative/asset-types/index.json
+++ b/schemas/cache/creative/asset-types/index.json
@@ -1,110 +1,110 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "adcp_version": "3.0.0-rc.3",
-  "architecture": {
-    "format_aware_validation": {
-      "description": "Creative manifests are validated in the context of their format specification",
-      "process": [
-        "1. Read format_id from manifest",
-        "2. Fetch format specification",
-        "3. For each asset in manifest, look up asset_id in format's assets array",
-        "4. Validate asset matches the type and requirements defined in the format"
-      ]
-    },
-    "payload_vs_requirements": {
-      "description": "Asset schemas define PAYLOAD structure (what you send), not constraints or requirements",
-      "payload_examples": [
-        "url, width, height, content, duration_ms, format"
-      ],
-      "requirement_examples": [
-        "max_file_size, required: true/false, min_duration, max_duration"
-      ],
-      "where_requirements_go": "Format specifications contain all constraints in the 'requirements' field of each asset_required item"
-    }
-  },
+  "title": "AdCP Asset Type Registry",
+  "description": "Registry of asset types used in AdCP creative manifests. Each asset type defines the structure of actual content payloads (what you send), not requirements or constraints (which belong in format specifications).",
+  "version": "1.0.0",
+  "lastUpdated": "2026-04-18",
   "asset_types": {
+    "image": {
+      "description": "Static image asset (JPG, PNG, GIF, WebP, SVG)",
+      "schema": "/schemas/core/assets/image-asset.json",
+      "typical_use": "Hero images, logos, product photos, backgrounds"
+    },
+    "video": {
+      "description": "Hosted video file asset (MP4, WebM, MOV)",
+      "schema": "/schemas/core/assets/video-asset.json",
+      "typical_use": "Video ads, product demos, brand stories"
+    },
     "audio": {
       "description": "Audio file asset (MP3, AAC, M4A, WAV, OGG)",
       "schema": "/schemas/core/assets/audio-asset.json",
       "typical_use": "Audio ads for streaming, podcasts, radio"
     },
-    "brief": {
-      "description": "Campaign-level creative context (creative brief)",
-      "schema": "/schemas/core/assets/brief-asset.json",
-      "typical_use": "Campaign briefs with objective, messaging, compliance requirements"
-    },
-    "catalog": {
-      "description": "Typed data feed (products, stores, jobs, etc.)",
-      "schema": "/schemas/core/assets/catalog-asset.json",
-      "typical_use": "Product catalogs, store locators, job feeds for dynamic creatives"
-    },
-    "css": {
-      "description": "CSS stylesheet asset for styling",
-      "schema": "/schemas/core/assets/css-asset.json",
-      "typical_use": "Stylesheets for HTML5 creatives, custom styling"
+    "vast": {
+      "description": "VAST XML tag for third-party video ad serving",
+      "schema": "/schemas/core/assets/vast-asset.json",
+      "typical_use": "Third-party served video ads with VAST 2.0-4.2"
     },
     "daast": {
       "description": "DAAST XML tag for third-party audio ad serving",
       "schema": "/schemas/core/assets/daast-asset.json",
       "typical_use": "Third-party served audio ads with DAAST 1.0-1.1"
     },
-    "html": {
-      "description": "HTML5 creative asset for interactive ads",
-      "schema": "/schemas/core/assets/html-asset.json",
-      "typical_use": "HTML5 display banners, rich media, interactive ads"
-    },
-    "image": {
-      "description": "Static image asset (JPG, PNG, GIF, WebP, SVG)",
-      "schema": "/schemas/core/assets/image-asset.json",
-      "typical_use": "Hero images, logos, product photos, backgrounds"
-    },
-    "javascript": {
-      "description": "JavaScript code for dynamic creative logic",
-      "schema": "/schemas/core/assets/javascript-asset.json",
-      "typical_use": "Third-party tags, custom interaction logic, analytics"
+    "text": {
+      "description": "Plain text content asset",
+      "schema": "/schemas/core/assets/text-asset.json",
+      "typical_use": "Headlines, descriptions, CTAs, body copy, disclaimers"
     },
     "markdown": {
       "description": "Markdown-formatted text content (CommonMark/GFM)",
       "schema": "/schemas/core/assets/markdown-asset.json",
       "typical_use": "Product specifications, format documentation, rich descriptions, structured content"
     },
-    "text": {
-      "description": "Plain text content asset",
-      "schema": "/schemas/core/assets/text-asset.json",
-      "typical_use": "Headlines, descriptions, CTAs, body copy, disclaimers"
-    },
     "url": {
       "description": "URL asset for clickthrough, tracking, landing pages",
       "schema": "/schemas/core/assets/url-asset.json",
       "typical_use": "Clickthrough URLs, tracking pixels, impression trackers"
     },
-    "vast": {
-      "description": "VAST XML tag for third-party video ad serving",
-      "schema": "/schemas/core/assets/vast-asset.json",
-      "typical_use": "Third-party served video ads with VAST 2.0-4.2"
+    "html": {
+      "description": "HTML5 creative asset for interactive ads",
+      "schema": "/schemas/core/assets/html-asset.json",
+      "typical_use": "HTML5 display banners, rich media, interactive ads"
     },
-    "video": {
-      "description": "Hosted video file asset (MP4, WebM, MOV)",
-      "schema": "/schemas/core/assets/video-asset.json",
-      "typical_use": "Video ads, product demos, brand stories"
+    "css": {
+      "description": "CSS stylesheet asset for styling",
+      "schema": "/schemas/core/assets/css-asset.json",
+      "typical_use": "Stylesheets for HTML5 creatives, custom styling"
     },
     "webhook": {
       "description": "Server-side webhook for dynamic creative rendering",
       "schema": "/schemas/core/assets/webhook-asset.json",
       "typical_use": "DCO (Dynamic Creative Optimization), real-time personalization, server-side rendering"
+    },
+    "javascript": {
+      "description": "JavaScript code for dynamic creative logic",
+      "schema": "/schemas/core/assets/javascript-asset.json",
+      "typical_use": "Third-party tags, custom interaction logic, analytics"
+    },
+    "brief": {
+      "description": "Campaign-level creative context (creative brief)",
+      "schema": "/schemas/core/assets/brief-asset.json",
+      "typical_use": "Campaign briefs with objective, messaging, compliance requirements"
+    },
+    "catalog": {
+      "description": "Typed data feed (products, stores, jobs, etc.)",
+      "schema": "/schemas/core/assets/catalog-asset.json",
+      "typical_use": "Product catalogs, store locators, job feeds for dynamic creatives"
+    }
+  },
+  "architecture": {
+    "payload_vs_requirements": {
+      "description": "Asset schemas define PAYLOAD structure (what you send), not constraints or requirements",
+      "payload_examples": [
+        "url, width, height, content, duration_ms, format"
+      ],
+      "requirement_examples": [
+        "max_file_size, required: true/false, min_duration, max_duration"
+      ],
+      "where_requirements_go": "Format specifications contain all constraints in the 'requirements' field of each asset_required item"
+    },
+    "format_aware_validation": {
+      "description": "Creative manifests are validated in the context of their format specification",
+      "process": [
+        "1. Read format_id from manifest",
+        "2. Fetch format specification",
+        "3. For each asset in manifest, look up asset_id in format's assets array",
+        "4. Validate asset matches the type and requirements defined in the format"
+      ]
     }
   },
-  "baseUrl": "/schemas/3.0.0-rc.3",
-  "description": "Registry of asset types used in AdCP creative manifests. Each asset type defines the structure of actual content payloads (what you send), not requirements or constraints (which belong in format specifications).",
-  "lastUpdated": "2026-04-01",
-  "title": "AdCP Asset Type Registry",
   "usage_notes": {
+    "format_specs": "Format specifications define what asset_ids are required (e.g., 'hero_image', 'logo'). Each defines its asset type and constraints (dimensions, file size, etc.).",
     "creative_manifests": "Creative manifests provide actual asset content, keyed by asset_id from the format. Asset type is determined by the format specification, not declared in the payload.",
-    "example_flow": "Format says 'hero_image' must be type 'image' with width 1200, height 627. Manifest provides hero_image: {url: '...', width: 1200, height: 627}. The format spec tells us it's an image type.",
-    "format_specs": "Format specifications define what asset_ids are required (e.g., 'hero_image', 'logo'). Each defines its asset type and constraints (dimensions, file size, etc.)."
+    "example_flow": "Format says 'hero_image' must be type 'image' with width 1200, height 627. Manifest provides hero_image: {url: '...', width: 1200, height: 627}. The format spec tells us it's an image type."
   },
-  "version": "1.0.0",
+  "adcp_version": "latest",
+  "baseUrl": "/schemas/latest",
   "versioning": {
-    "note": "AdCP uses build-time versioning. This directory contains schemas for AdCP 3.0.0-rc.3. Full semantic versions are available at /schemas/{version}/ (e.g., /schemas/2.5.0/). Major version aliases point to the latest release: /schemas/v3/ \u2192 /schemas/3.0.0-rc.3/."
+    "note": "AdCP uses build-time versioning. This directory contains schemas for AdCP latest. Full semantic versions are available at /schemas/{version}/ (e.g., /schemas/2.5.0/). Major version aliases point to the latest release: /schemas/vlatest/ \u2192 /schemas/latest/."
   }
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/creative-feature-result.json b/schemas/cache/creative/creative-feature-result.json
index d94fa1be5..321dfefc7 100644
--- a/schemas/cache/creative/creative-feature-result.json
+++ b/schemas/cache/creative/creative-feature-result.json
@@ -1,43 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Creative Feature Result",
   "description": "A single feature evaluation result for a creative. Uses the same value structure as property-feature-value (value, confidence, expires_at, etc.).",
+  "type": "object",
   "properties": {
-    "confidence": {
-      "description": "Confidence score for this value (0-1)",
-      "maximum": 1,
-      "minimum": 0,
-      "type": "number"
-    },
-    "details": {
-      "additionalProperties": true,
-      "description": "Additional vendor-specific details about this evaluation",
-      "type": "object"
-    },
-    "expires_at": {
-      "description": "When this evaluation expires and should be refreshed",
-      "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
     "feature_id": {
-      "description": "The feature that was evaluated (e.g., 'auto_redirect', 'brand_consistency'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:eu_ai_act_article_50'). Unprefixed feature IDs are agent-defined.",
-      "type": "string"
-    },
-    "measured_at": {
-      "description": "When this feature was evaluated",
-      "format": "date-time",
-      "type": "string"
-    },
-    "methodology_version": {
-      "description": "Version of the methodology used to evaluate this feature",
-      "type": "string"
-    },
-    "unit": {
-      "description": "Unit of measurement for quantitative values (e.g., 'percentage', 'score')",
-      "type": "string"
+      "type": "string",
+      "description": "The feature that was evaluated (e.g., 'auto_redirect', 'brand_consistency'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:eu_ai_act_article_50'). Unprefixed feature IDs are agent-defined."
     },
     "value": {
       "description": "The feature value. Type depends on feature definition: boolean for binary, number for quantitative, string for categorical.",
@@ -52,12 +21,47 @@
           "type": "string"
         }
       ]
+    },
+    "unit": {
+      "type": "string",
+      "description": "Unit of measurement for quantitative values (e.g., 'percentage', 'score')"
+    },
+    "confidence": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 1,
+      "description": "Confidence score for this value (0-1)"
+    },
+    "measured_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this feature was evaluated"
+    },
+    "expires_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this evaluation expires and should be refreshed"
+    },
+    "methodology_version": {
+      "type": "string",
+      "description": "Version of the methodology used to evaluate this feature"
+    },
+    "details": {
+      "type": "object",
+      "description": "Additional vendor-specific details about this evaluation",
+      "additionalProperties": true
+    },
+    "policy_id": {
+      "type": "string",
+      "description": "Optional attribution \u2014 when this feature was evaluated to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0."
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "feature_id",
     "value"
   ],
-  "title": "Creative Feature Result",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/get-creative-delivery-request.json b/schemas/cache/creative/get-creative-delivery-request.json
index 828292978..46fe0bba1 100644
--- a/schemas/cache/creative/get-creative-delivery-request.json
+++ b/schemas/cache/creative/get-creative-delivery-request.json
@@ -1,66 +1,72 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "anyOf": [
-    {
-      "required": [
-        "media_buy_ids"
-      ]
-    },
-    {
-      "required": [
-        "creative_ids"
-      ]
-    }
-  ],
+  "title": "Get Creative Delivery Request",
   "description": "Request parameters for retrieving creative delivery data including variant-level metrics from a creative agent. At least one scoping filter (media_buy_ids or creative_ids) is required.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Account for routing and scoping. Limits results to creatives within this account."
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "media_buy_ids": {
+      "type": "array",
+      "description": "Filter to specific media buys by publisher ID. If omitted, returns creative delivery across all matching media buys.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
     },
     "creative_ids": {
+      "type": "array",
       "description": "Filter to specific creatives by ID. If omitted, returns delivery for all creatives matching the other filters.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "end_date": {
-      "description": "End date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone.",
+    "start_date": {
+      "type": "string",
       "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-      "type": "string"
+      "description": "Start date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone."
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "end_date": {
+      "type": "string",
+      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+      "description": "End date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone."
     },
     "max_variants": {
+      "type": "integer",
       "description": "Maximum number of variants to return per creative. When omitted, the agent returns all variants. Use this to limit response size for generative creatives that may produce large numbers of variants.",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "media_buy_ids": {
-      "description": "Filter to specific media buys by publisher ID. If omitted, returns creative delivery across all matching media buys.",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
+      "minimum": 1
     },
     "pagination": {
       "$ref": "../core/pagination-request.json",
       "description": "Pagination parameters for the creatives array in the response. Uses cursor-based pagination consistent with other list operations."
     },
-    "start_date": {
-      "description": "Start date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone.",
-      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Creative Delivery Request",
-  "type": "object"
+  "anyOf": [
+    {
+      "required": [
+        "media_buy_ids"
+      ]
+    },
+    {
+      "required": [
+        "creative_ids"
+      ]
+    }
+  ],
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/get-creative-delivery-response.json b/schemas/cache/creative/get-creative-delivery-response.json
index b9d6e8065..280c086e9 100644
--- a/schemas/cache/creative/get-creative-delivery-response.json
+++ b/schemas/cache/creative/get-creative-delivery-response.json
@@ -1,98 +1,111 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Creative Delivery Response",
   "description": "Response payload for get_creative_delivery task. Returns creative delivery data with variant-level breakdowns including manifests and metrics.",
+  "type": "object",
   "properties": {
     "account_id": {
-      "description": "Account identifier. Present when the response spans or is scoped to a specific account.",
-      "type": "string"
+      "type": "string",
+      "description": "Account identifier. Present when the response spans or is scoped to a specific account."
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "media_buy_id": {
+      "type": "string",
+      "description": "Publisher's media buy identifier. Present when the request was scoped to a single media buy."
+    },
+    "currency": {
+      "type": "string",
+      "description": "ISO 4217 currency code for monetary values in this response (e.g., 'USD', 'EUR')",
+      "pattern": "^[A-Z]{3}$"
+    },
+    "reporting_period": {
+      "type": "object",
+      "description": "Date range for the report.",
+      "properties": {
+        "start": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 start timestamp"
+        },
+        "end": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 end timestamp"
+        },
+        "timezone": {
+          "type": "string",
+          "description": "IANA timezone identifier for the reporting period (e.g., 'America/New_York', 'UTC'). Platforms report in their native timezone."
+        }
+      },
+      "required": [
+        "start",
+        "end"
+      ],
+      "additionalProperties": true
     },
     "creatives": {
+      "type": "array",
       "description": "Creative delivery data with variant breakdowns",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
           "creative_id": {
-            "description": "Creative identifier",
-            "type": "string"
+            "type": "string",
+            "description": "Creative identifier"
+          },
+          "media_buy_id": {
+            "type": "string",
+            "description": "Publisher's media buy identifier for this creative. Present when the request spanned multiple media buys, so the buyer can correlate each creative to its media buy."
           },
           "format_id": {
             "$ref": "../core/format-id.json",
             "description": "Format of this creative"
           },
-          "media_buy_id": {
-            "description": "Publisher's media buy identifier for this creative. Present when the request spanned multiple media buys, so the buyer can correlate each creative to its media buy.",
-            "type": "string"
-          },
           "totals": {
             "$ref": "../core/delivery-metrics.json",
             "description": "Aggregate delivery metrics across all variants of this creative"
           },
           "variant_count": {
+            "type": "integer",
             "description": "Total number of variants for this creative. When max_variants was specified in the request, this may exceed the number of items in the variants array.",
-            "minimum": 0,
-            "type": "integer"
+            "minimum": 0
           },
           "variants": {
+            "type": "array",
             "description": "Variant-level delivery breakdown. Each variant includes the rendered manifest and delivery metrics. For standard creatives, contains a single variant. For asset group optimization, one per combination. For generative creative, one per generated execution. Empty when a creative has no variants yet.",
             "items": {
               "$ref": "../core/creative-variant.json"
-            },
-            "type": "array"
+            }
           }
         },
         "required": [
           "creative_id",
           "variants"
         ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "currency": {
-      "description": "ISO 4217 currency code for monetary values in this response (e.g., 'USD', 'EUR')",
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "errors": {
-      "description": "Task-specific errors and warnings",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "media_buy_id": {
-      "description": "Publisher's media buy identifier. Present when the request was scoped to a single media buy.",
-      "type": "string"
+        "additionalProperties": true
+      }
     },
     "pagination": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Pagination information. Present when the request included pagination parameters.",
       "properties": {
-        "has_more": {
-          "description": "Whether more creatives are available beyond this page",
-          "type": "boolean"
-        },
         "limit": {
+          "type": "integer",
           "description": "Maximum number of creatives requested",
-          "minimum": 1,
-          "type": "integer"
+          "minimum": 1
         },
         "offset": {
+          "type": "integer",
           "description": "Number of creatives skipped",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
+        },
+        "has_more": {
+          "type": "boolean",
+          "description": "Whether more creatives are available beyond this page"
         },
         "total": {
+          "type": "integer",
           "description": "Total number of creatives matching the request filters",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
         }
       },
       "required": [
@@ -100,32 +113,20 @@
         "offset",
         "has_more"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "reporting_period": {
-      "additionalProperties": true,
-      "description": "Date range for the report.",
-      "properties": {
-        "end": {
-          "description": "ISO 8601 end timestamp",
-          "format": "date-time",
-          "type": "string"
-        },
-        "start": {
-          "description": "ISO 8601 start timestamp",
-          "format": "date-time",
-          "type": "string"
-        },
-        "timezone": {
-          "description": "IANA timezone identifier for the reporting period (e.g., 'America/New_York', 'UTC'). Platforms report in their native timezone.",
-          "type": "string"
-        }
-      },
-      "required": [
-        "start",
-        "end"
-      ],
-      "type": "object"
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings",
+      "items": {
+        "$ref": "../core/error.json"
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -133,6 +134,5 @@
     "currency",
     "creatives"
   ],
-  "title": "Get Creative Delivery Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/get-creative-features-request.json b/schemas/cache/creative/get-creative-features-request.json
index 4525373c6..ba9b5c457 100644
--- a/schemas/cache/creative/get-creative-features-request.json
+++ b/schemas/cache/creative/get-creative-features-request.json
@@ -1,34 +1,40 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Creative Features Request",
   "description": "Request payload for the get_creative_features task. Submits a creative manifest for evaluation by a governance agent, which analyzes the creative and returns scored feature values (brand safety, content categorization, quality metrics, etc.).",
+  "type": "object",
   "properties": {
-    "account": {
-      "$ref": "../core/account-ref.json",
-      "description": "Account for billing this evaluation. Required when the governance agent charges per evaluation."
-    },
-    "context": {
-      "$ref": "../core/context.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "creative_manifest": {
       "$ref": "../core/creative-manifest.json",
       "description": "The creative manifest to evaluate. Contains format_id and assets."
     },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
     "feature_ids": {
+      "type": "array",
       "description": "Optional filter to specific features. If omitted, returns all available features.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account for billing this evaluation. Required when the governance agent charges per evaluation."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "creative_manifest"
   ],
-  "title": "Get Creative Features Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/get-creative-features-response.json b/schemas/cache/creative/get-creative-features-response.json
index 56f9e8b27..957aa8559 100644
--- a/schemas/cache/creative/get-creative-features-response.json
+++ b/schemas/cache/creative/get-creative-features-response.json
@@ -1,45 +1,66 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Creative Features Response",
   "description": "Response payload for the get_creative_features task. Returns scored feature values from the governance agent's evaluation of the submitted creative manifest.",
+  "type": "object",
   "oneOf": [
     {
+      "type": "object",
       "description": "Success response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
+        "results": {
+          "type": "array",
+          "description": "Feature values for the evaluated creative",
+          "items": {
+            "$ref": "creative-feature-result.json"
+          }
         },
         "detail_url": {
-          "description": "URL to the vendor's full assessment report. The vendor controls what information is disclosed and access control.",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL to the vendor's full assessment report. The vendor controls what information is disclosed and access control."
+        },
+        "pricing_option_id": {
+          "type": "string",
+          "description": "Which rate card pricing option was applied for this evaluation. Present when the governance agent charges for evaluations and account was provided in the request."
+        },
+        "vendor_cost": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Cost incurred for this evaluation, denominated in currency."
+        },
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code for vendor_cost."
+        },
+        "consumption": {
+          "$ref": "../core/creative-consumption.json",
+          "description": "Structured consumption details for this evaluation. Informational \u2014 lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth."
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "results": {
-          "description": "Feature values for the evaluated creative",
-          "items": {
-            "$ref": "creative-feature-result.json"
-          },
-          "type": "array"
         }
       },
       "required": [
         "results"
-      ],
-      "type": "object"
+      ]
     },
     {
+      "type": "object",
       "description": "Error response",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "items": {
             "$ref": "../core/error.json"
-          },
-          "type": "array"
+          }
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -47,10 +68,7 @@
       },
       "required": [
         "errors"
-      ],
-      "type": "object"
+      ]
     }
-  ],
-  "title": "Get Creative Features Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/list-creative-formats-request.json b/schemas/cache/creative/list-creative-formats-request.json
index de4b89d28..de04ba3f8 100644
--- a/schemas/cache/creative/list-creative-formats-request.json
+++ b/schemas/cache/creative/list-creative-formats-request.json
@@ -1,11 +1,38 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Creative Formats Request (Creative Agent)",
   "description": "Request parameters for discovering creative formats provided by this creative agent",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "format_ids": {
+      "type": "array",
+      "description": "Return only these specific format IDs",
+      "items": {
+        "$ref": "../core/format-id.json"
+      },
+      "minItems": 1
+    },
+    "type": {
+      "type": "string",
+      "description": "Filter by format type (technical categories with distinct requirements)",
+      "enum": [
+        "audio",
+        "video",
+        "display",
+        "dooh"
+      ]
+    },
     "asset_types": {
+      "type": "array",
       "description": "Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
       "items": {
+        "type": "string",
         "enum": [
           "image",
           "video",
@@ -14,102 +41,90 @@
           "html",
           "javascript",
           "url"
-        ],
-        "type": "string"
+        ]
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "max_width": {
+      "type": "integer",
+      "description": "Maximum width in pixels (inclusive). Returns formats with width <= this value. Omit for responsive/fluid formats."
     },
-    "disclosure_persistence": {
-      "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
-      "items": {
-        "$ref": "../enums/disclosure-persistence.json"
-      },
-      "minItems": 1,
-      "type": "array",
-      "uniqueItems": true
+    "max_height": {
+      "type": "integer",
+      "description": "Maximum height in pixels (inclusive). Returns formats with height <= this value. Omit for responsive/fluid formats."
+    },
+    "min_width": {
+      "type": "integer",
+      "description": "Minimum width in pixels (inclusive). Returns formats with width >= this value."
+    },
+    "min_height": {
+      "type": "integer",
+      "description": "Minimum height in pixels (inclusive). Returns formats with height >= this value."
+    },
+    "is_responsive": {
+      "type": "boolean",
+      "description": "Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions."
+    },
+    "name_search": {
+      "type": "string",
+      "description": "Search for formats by name (case-insensitive partial match)"
+    },
+    "wcag_level": {
+      "$ref": "../enums/wcag-level.json",
+      "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)"
     },
     "disclosure_positions": {
+      "type": "array",
       "description": "Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
       "items": {
         "$ref": "../enums/disclosure-position.json"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "disclosure_persistence": {
+      "type": "array",
+      "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
+      "items": {
+        "$ref": "../enums/disclosure-persistence.json"
+      },
+      "minItems": 1,
+      "uniqueItems": true
     },
-    "format_ids": {
-      "description": "Return only these specific format IDs",
+    "output_format_ids": {
+      "type": "array",
+      "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
       "items": {
         "$ref": "../core/format-id.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "input_format_ids": {
+      "type": "array",
       "description": "Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input \u2014 inspect each result's output_format_ids to see what they can produce.",
       "items": {
         "$ref": "../core/format-id.json"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "is_responsive": {
-      "description": "Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.",
-      "type": "boolean"
-    },
-    "max_height": {
-      "description": "Maximum height in pixels (inclusive). Returns formats with height <= this value. Omit for responsive/fluid formats.",
-      "type": "integer"
-    },
-    "max_width": {
-      "description": "Maximum width in pixels (inclusive). Returns formats with width <= this value. Omit for responsive/fluid formats.",
-      "type": "integer"
+      "minItems": 1
     },
-    "min_height": {
-      "description": "Minimum height in pixels (inclusive). Returns formats with height >= this value.",
-      "type": "integer"
+    "include_pricing": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include pricing_options on each format. Used by transformation and generation agents that charge per format or per unit of work. Requires account. When false or omitted, pricing is not computed."
     },
-    "min_width": {
-      "description": "Minimum width in pixels (inclusive). Returns formats with width >= this value.",
-      "type": "integer"
-    },
-    "name_search": {
-      "description": "Search for formats by name (case-insensitive partial match)",
-      "type": "string"
-    },
-    "output_format_ids": {
-      "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
-      "items": {
-        "$ref": "../core/format-id.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account reference for pricing. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each format."
     },
     "pagination": {
       "$ref": "../core/pagination-request.json"
     },
-    "type": {
-      "description": "Filter by format type (technical categories with distinct requirements)",
-      "enum": [
-        "audio",
-        "video",
-        "display",
-        "dooh"
-      ],
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "wcag_level": {
-      "$ref": "../enums/wcag-level.json",
-      "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "List Creative Formats Request (Creative Agent)",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/list-creative-formats-response.json b/schemas/cache/creative/list-creative-formats-response.json
index 687f19605..0bfa4279e 100644
--- a/schemas/cache/creative/list-creative-formats-response.json
+++ b/schemas/cache/creative/list-creative-formats-response.json
@@ -1,63 +1,63 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Creative Formats Response (Creative Agent)",
   "description": "Response payload for list_creative_formats task from creative agent - returns full format definitions",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
+    "formats": {
+      "type": "array",
+      "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
+      "items": {
+        "$ref": "../core/format.json"
+      }
     },
     "creative_agents": {
+      "type": "array",
       "description": "Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.",
       "items": {
+        "type": "object",
         "properties": {
-          "agent_name": {
-            "description": "Human-readable name for the creative agent",
-            "type": "string"
-          },
           "agent_url": {
-            "description": "Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats.",
+            "type": "string",
             "format": "uri",
-            "type": "string"
+            "description": "Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
+          },
+          "agent_name": {
+            "type": "string",
+            "description": "Human-readable name for the creative agent"
           },
           "capabilities": {
+            "type": "array",
             "description": "Capabilities this creative agent provides",
             "items": {
               "$ref": "../enums/creative-agent-capability.json"
-            },
-            "type": "array"
+            }
           }
         },
         "required": [
           "agent_url"
-        ],
-        "type": "object"
-      },
-      "type": "array"
+        ]
+      }
     },
     "errors": {
+      "type": "array",
       "description": "Task-specific errors and warnings",
       "items": {
         "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "formats": {
-      "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
-      "items": {
-        "$ref": "../core/format.json"
-      },
-      "type": "array"
+      }
     },
     "pagination": {
       "$ref": "../core/pagination-response.json"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "formats"
   ],
-  "title": "List Creative Formats Response (Creative Agent)",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/list-creatives-request.json b/schemas/cache/creative/list-creatives-request.json
index 7ba74822e..d214e87b8 100644
--- a/schemas/cache/creative/list-creatives-request.json
+++ b/schemas/cache/creative/list-creatives-request.json
@@ -1,19 +1,111 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Creatives Request",
   "description": "Request parameters for querying creative assets from a creative library with filtering, sorting, and pagination. Implemented by any agent that hosts a creative library \u2014 creative agents (ad servers, creative platforms) and sales agents that manage creatives.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "filters": {
+      "$ref": "../core/creative-filters.json"
+    },
+    "sort": {
+      "type": "object",
+      "description": "Sorting parameters",
+      "properties": {
+        "field": {
+          "$ref": "../enums/creative-sort-field.json",
+          "default": "created_date",
+          "description": "Field to sort by"
+        },
+        "direction": {
+          "$ref": "../enums/sort-direction.json",
+          "default": "desc",
+          "description": "Sort direction"
+        }
+      },
+      "additionalProperties": true
+    },
+    "pagination": {
+      "$ref": "../core/pagination-request.json"
+    },
+    "include_assignments": {
+      "type": "boolean",
+      "default": true,
+      "description": "Include package assignment information in response"
+    },
+    "include_snapshot": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include a lightweight delivery snapshot per creative (lifetime impressions and last-served date). For detailed performance analytics, use get_creative_delivery."
+    },
+    "include_items": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include items for multi-asset formats like carousels and native ads"
+    },
+    "include_variables": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include dynamic content variable definitions (DCO slots) for each creative"
+    },
+    "include_pricing": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include pricing_options on each creative. Requires account to be provided. When false or omitted, pricing is not computed."
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account reference for pricing and access. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each creative."
+    },
+    "fields": {
+      "type": "array",
+      "description": "Specific fields to include in response (omit for all fields). The 'concept' value returns both concept_id and concept_name.",
+      "minItems": 1,
+      "items": {
+        "type": "string",
+        "enum": [
+          "creative_id",
+          "name",
+          "format_id",
+          "status",
+          "created_date",
+          "updated_date",
+          "tags",
+          "assignments",
+          "snapshot",
+          "items",
+          "variables",
+          "concept",
+          "pricing_options"
+        ]
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "List all approved creatives",
       "data": {
         "filters": {
           "statuses": [
             "approved"
           ]
         }
-      },
-      "description": "List all approved creatives"
+      }
     },
     {
+      "description": "List creatives in a specific concept matching a format",
       "data": {
         "filters": {
           "concept_ids": [
@@ -22,17 +114,17 @@
           "format_ids": [
             {
               "agent_url": "https://creative.example.com",
-              "height": 250,
               "id": "display_static",
-              "width": 300
+              "width": 300,
+              "height": 250
             }
           ]
         },
         "include_variables": true
-      },
-      "description": "List creatives in a specific concept matching a format"
+      }
     },
     {
+      "description": "Find DCO creatives for dynamic campaigns",
       "data": {
         "filters": {
           "has_variables": true,
@@ -41,10 +133,10 @@
           ]
         },
         "include_variables": true
-      },
-      "description": "Find DCO creatives for dynamic campaigns"
+      }
     },
     {
+      "description": "Lightweight list with minimal fields",
       "data": {
         "fields": [
           "creative_id",
@@ -52,83 +144,21 @@
           "status"
         ],
         "include_assignments": false
-      },
-      "description": "Lightweight list with minimal fields"
-    }
-  ],
-  "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "fields": {
-      "description": "Specific fields to include in response (omit for all fields). The 'concept' value returns both concept_id and concept_name.",
-      "items": {
-        "enum": [
-          "creative_id",
-          "name",
-          "format_id",
-          "status",
-          "created_date",
-          "updated_date",
-          "tags",
-          "assignments",
-          "snapshot",
-          "items",
-          "variables",
-          "concept"
-        ],
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "filters": {
-      "$ref": "../core/creative-filters.json"
-    },
-    "include_assignments": {
-      "default": true,
-      "description": "Include package assignment information in response",
-      "type": "boolean"
+      }
     },
-    "include_items": {
-      "default": false,
-      "description": "Include items for multi-asset formats like carousels and native ads",
-      "type": "boolean"
-    },
-    "include_snapshot": {
-      "default": false,
-      "description": "Include a lightweight delivery snapshot per creative (lifetime impressions and last-served date). For detailed performance analytics, use get_creative_delivery.",
-      "type": "boolean"
-    },
-    "include_variables": {
-      "default": false,
-      "description": "Include dynamic content variable definitions (DCO slots) for each creative",
-      "type": "boolean"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-request.json"
-    },
-    "sort": {
-      "additionalProperties": true,
-      "description": "Sorting parameters",
-      "properties": {
-        "direction": {
-          "$ref": "../enums/sort-direction.json",
-          "default": "desc",
-          "description": "Sort direction"
+    {
+      "description": "List creatives with account-specific pricing",
+      "data": {
+        "account": {
+          "account_id": "acct_acme_creative"
         },
-        "field": {
-          "$ref": "../enums/creative-sort-field.json",
-          "default": "created_date",
-          "description": "Field to sort by"
+        "include_pricing": true,
+        "filters": {
+          "statuses": [
+            "approved"
+          ]
         }
-      },
-      "type": "object"
+      }
     }
-  },
-  "title": "List Creatives Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/list-creatives-response.json b/schemas/cache/creative/list-creatives-response.json
index 9bd44fae3..339a804fe 100644
--- a/schemas/cache/creative/list-creatives-response.json
+++ b/schemas/cache/creative/list-creatives-response.json
@@ -1,127 +1,90 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Creatives Response",
   "description": "Response from creative library query with filtered results, metadata, and optional enriched data",
-  "examples": [
-    {
-      "data": {
-        "creatives": [
-          {
-            "assets": {
-              "banner_image": {
-                "height": 250,
-                "url": "https://cdn.example.com/holiday_300x250.png",
-                "width": 300
-              },
-              "clickthrough_url": {
-                "url": "https://acmecorp.example.com/holiday-sale"
-              }
-            },
-            "concept_id": "concept_holiday_2026",
-            "concept_name": "Holiday 2026 Campaign",
-            "created_date": "2026-01-10T14:00:00Z",
-            "creative_id": "ft_88201",
-            "format_id": {
-              "agent_url": "https://creative.example.com",
-              "height": 250,
-              "id": "display_static",
-              "width": 300
-            },
-            "name": "Holiday Sale - Medium Rectangle",
-            "status": "approved",
-            "tags": [
-              "holiday_2026",
-              "display"
-            ],
-            "updated_date": "2026-02-20T09:30:00Z",
-            "variables": [
-              {
-                "default_value": "Holiday Sale - 50% Off",
-                "name": "Headline",
-                "required": true,
-                "variable_id": "headline_text",
-                "variable_type": "text"
-              },
-              {
-                "name": "Hero Image",
-                "required": false,
-                "variable_id": "hero_image",
-                "variable_type": "image"
-              }
-            ]
-          },
-          {
-            "assets": {
-              "banner_image": {
-                "height": 90,
-                "url": "https://cdn.example.com/holiday_728x90.png",
-                "width": 728
-              },
-              "clickthrough_url": {
-                "url": "https://acmecorp.example.com/holiday-sale"
-              }
-            },
-            "concept_id": "concept_holiday_2026",
-            "concept_name": "Holiday 2026 Campaign",
-            "created_date": "2026-01-10T14:30:00Z",
-            "creative_id": "ft_88202",
-            "format_id": {
-              "agent_url": "https://creative.example.com",
-              "height": 90,
-              "id": "display_static",
-              "width": 728
-            },
-            "name": "Holiday Sale - Leaderboard",
-            "status": "approved",
-            "tags": [
-              "holiday_2026",
-              "display"
-            ],
-            "updated_date": "2026-02-20T09:35:00Z",
-            "variables": []
-          }
-        ],
-        "format_summary": {
-          "display_static_300x250": 1,
-          "display_static_728x90": 1
+  "type": "object",
+  "properties": {
+    "query_summary": {
+      "type": "object",
+      "description": "Summary of the query that was executed",
+      "properties": {
+        "total_matching": {
+          "type": "integer",
+          "description": "Total number of creatives matching filters (across all pages)",
+          "minimum": 0
         },
-        "pagination": {
-          "has_more": false,
-          "total_count": 2
+        "returned": {
+          "type": "integer",
+          "description": "Number of creatives returned in this response",
+          "minimum": 0
         },
-        "query_summary": {
-          "filters_applied": [
-            "concept_ids=concept_holiday_2026",
-            "statuses=approved"
-          ],
-          "returned": 2,
-          "total_matching": 2
+        "filters_applied": {
+          "type": "array",
+          "description": "List of filters that were applied to the query",
+          "items": {
+            "type": "string"
+          }
         },
-        "status_summary": {
-          "approved": 2,
-          "archived": 0,
-          "pending_review": 0,
-          "rejected": 0
+        "sort_applied": {
+          "type": "object",
+          "description": "Sort order that was applied",
+          "properties": {
+            "field": {
+              "type": "string"
+            },
+            "direction": {
+              "$ref": "../enums/sort-direction.json"
+            }
+          }
         }
       },
-      "description": "Library query with creatives and variables"
-    }
-  ],
-  "properties": {
-    "context": {
-      "$ref": "../core/context.json"
+      "required": [
+        "total_matching",
+        "returned"
+      ],
+      "additionalProperties": true
+    },
+    "pagination": {
+      "$ref": "../core/pagination-response.json"
     },
     "creatives": {
+      "type": "array",
       "description": "Array of creative assets matching the query",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "Unique identifier for the creative"
+          },
           "account": {
             "$ref": "../core/account.json",
             "description": "Account that owns this creative"
           },
+          "name": {
+            "type": "string",
+            "description": "Human-readable creative name"
+          },
+          "format_id": {
+            "$ref": "../core/format-id.json",
+            "description": "Format identifier specifying which format this creative conforms to"
+          },
+          "status": {
+            "$ref": "../enums/creative-status.json",
+            "description": "Current approval status of the creative"
+          },
+          "created_date": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the creative was created"
+          },
+          "updated_date": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When the creative was last modified"
+          },
           "assets": {
-            "additionalProperties": true,
+            "type": "object",
             "description": "Assets for this creative, keyed by asset_id",
             "patternProperties": {
               "^[a-z0-9_]+$": {
@@ -171,101 +134,91 @@
                 ]
               }
             },
-            "type": "object"
+            "additionalProperties": true
+          },
+          "tags": {
+            "type": "array",
+            "description": "User-defined tags for organization and searchability",
+            "items": {
+              "type": "string"
+            }
+          },
+          "concept_id": {
+            "type": "string",
+            "description": "Creative concept this creative belongs to. Concepts group related creatives across sizes and formats."
+          },
+          "concept_name": {
+            "type": "string",
+            "description": "Human-readable concept name"
+          },
+          "variables": {
+            "type": "array",
+            "description": "Dynamic content variables (DCO slots) for this creative. Included when include_variables=true.",
+            "items": {
+              "$ref": "../core/creative-variable.json"
+            }
           },
           "assignments": {
-            "additionalProperties": true,
+            "type": "object",
             "description": "Current package assignments (included when include_assignments=true)",
             "properties": {
+              "assignment_count": {
+                "type": "integer",
+                "description": "Total number of active package assignments",
+                "minimum": 0
+              },
               "assigned_packages": {
+                "type": "array",
                 "description": "List of packages this creative is assigned to",
                 "items": {
-                  "additionalProperties": true,
+                  "type": "object",
                   "properties": {
+                    "package_id": {
+                      "type": "string",
+                      "description": "Package identifier"
+                    },
                     "assigned_date": {
-                      "description": "When this assignment was created",
+                      "type": "string",
                       "format": "date-time",
-                      "type": "string"
-                    },
-                    "package_id": {
-                      "description": "Package identifier",
-                      "type": "string"
+                      "description": "When this assignment was created"
                     }
                   },
                   "required": [
                     "package_id",
                     "assigned_date"
                   ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "assignment_count": {
-                "description": "Total number of active package assignments",
-                "minimum": 0,
-                "type": "integer"
+                  "additionalProperties": true
+                }
               }
             },
             "required": [
               "assignment_count"
             ],
-            "type": "object"
-          },
-          "concept_id": {
-            "description": "Creative concept this creative belongs to. Concepts group related creatives across sizes and formats.",
-            "type": "string"
-          },
-          "concept_name": {
-            "description": "Human-readable concept name",
-            "type": "string"
-          },
-          "created_date": {
-            "description": "When the creative was created",
-            "format": "date-time",
-            "type": "string"
-          },
-          "creative_id": {
-            "description": "Unique identifier for the creative",
-            "type": "string"
-          },
-          "format_id": {
-            "$ref": "../core/format-id.json",
-            "description": "Format identifier specifying which format this creative conforms to"
-          },
-          "items": {
-            "description": "Items for multi-asset formats like carousels and native ads (included when include_items=true)",
-            "items": {
-              "$ref": "../core/creative-item.json"
-            },
-            "type": "array"
-          },
-          "name": {
-            "description": "Human-readable creative name",
-            "type": "string"
+            "additionalProperties": true
           },
           "snapshot": {
-            "additionalProperties": true,
+            "type": "object",
             "description": "Lightweight delivery snapshot (included when include_snapshot=true). For detailed performance analytics, use get_creative_delivery.",
             "properties": {
               "as_of": {
-                "description": "When this snapshot was captured by the platform",
+                "type": "string",
                 "format": "date-time",
-                "type": "string"
+                "description": "When this snapshot was captured by the platform"
+              },
+              "staleness_seconds": {
+                "type": "integer",
+                "description": "Maximum age of this data in seconds. For example, 3600 means the data may be up to 1 hour old.",
+                "minimum": 0
               },
               "impressions": {
+                "type": "integer",
                 "description": "Lifetime impressions across all assignments. Not scoped to any date range.",
-                "minimum": 0,
-                "type": "integer"
+                "minimum": 0
               },
               "last_served": {
-                "description": "Last time this creative served an impression. Absent when the creative has never served.",
+                "type": "string",
                 "format": "date-time",
-                "type": "string"
-              },
-              "staleness_seconds": {
-                "description": "Maximum age of this data in seconds. For example, 3600 means the data may be up to 1 hour old.",
-                "minimum": 0,
-                "type": "integer"
+                "description": "Last time this creative served an impression. Absent when the creative has never served."
               }
             },
             "required": [
@@ -273,39 +226,31 @@
               "staleness_seconds",
               "impressions"
             ],
-            "type": "object"
+            "additionalProperties": true
           },
           "snapshot_unavailable_reason": {
+            "type": "string",
             "description": "Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot data is unavailable for this creative.",
             "enum": [
               "SNAPSHOT_UNSUPPORTED",
               "SNAPSHOT_TEMPORARILY_UNAVAILABLE",
               "SNAPSHOT_PERMISSION_DENIED"
-            ],
-            "type": "string"
-          },
-          "status": {
-            "$ref": "../enums/creative-status.json",
-            "description": "Current approval status of the creative"
+            ]
           },
-          "tags": {
-            "description": "User-defined tags for organization and searchability",
+          "items": {
+            "type": "array",
+            "description": "Items for multi-asset formats like carousels and native ads (included when include_items=true)",
             "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          "updated_date": {
-            "description": "When the creative was last modified",
-            "format": "date-time",
-            "type": "string"
+              "$ref": "../core/creative-item.json"
+            }
           },
-          "variables": {
-            "description": "Dynamic content variables (DCO slots) for this creative. Included when include_variables=true.",
+          "pricing_options": {
+            "type": "array",
+            "description": "Pricing options for using this creative (serving, delivery). Used by ad servers and library agents. Transformation agents expose format-level pricing on list_creative_formats instead. Present when include_pricing=true and account provided. The buyer passes the applied pricing_option_id in report_usage.",
             "items": {
-              "$ref": "../core/creative-variable.json"
+              "$ref": "../core/vendor-pricing-option.json"
             },
-            "type": "array"
+            "minItems": 1
           }
         },
         "required": [
@@ -316,110 +261,69 @@
           "created_date",
           "updated_date"
         ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "errors": {
-      "description": "Task-specific errors (e.g., invalid filters, account not found)",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+        "additionalProperties": true
+      }
     },
     "format_summary": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Breakdown of creatives by format. Keys are agent-defined format identifiers, optionally including dimensions (e.g., 'display_static_300x250', 'video_30s_vast'). Key construction is platform-specific \u2014 there is no required format.",
       "patternProperties": {
         "^[a-zA-Z0-9_-]+$": {
+          "type": "integer",
           "description": "Number of creatives with this format",
-          "minimum": 0,
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-response.json"
-    },
-    "query_summary": {
-      "additionalProperties": true,
-      "description": "Summary of the query that was executed",
-      "properties": {
-        "filters_applied": {
-          "description": "List of filters that were applied to the query",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "returned": {
-          "description": "Number of creatives returned in this response",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "sort_applied": {
-          "description": "Sort order that was applied",
-          "properties": {
-            "direction": {
-              "$ref": "../enums/sort-direction.json"
-            },
-            "field": {
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "total_matching": {
-          "description": "Total number of creatives matching filters (across all pages)",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
         }
       },
-      "required": [
-        "total_matching",
-        "returned"
-      ],
-      "type": "object"
-    },
-    "sandbox": {
-      "description": "When true, this response contains simulated data from sandbox mode.",
-      "type": "boolean"
+      "additionalProperties": true
     },
     "status_summary": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Breakdown of creatives by status",
       "properties": {
+        "processing": {
+          "type": "integer",
+          "description": "Number of creatives being processed",
+          "minimum": 0
+        },
         "approved": {
+          "type": "integer",
           "description": "Number of approved creatives",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "archived": {
-          "description": "Number of archived creatives",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
         },
         "pending_review": {
+          "type": "integer",
           "description": "Number of creatives pending review",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "processing": {
-          "description": "Number of creatives being processed",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
         },
         "rejected": {
+          "type": "integer",
           "description": "Number of rejected creatives",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
+        },
+        "archived": {
+          "type": "integer",
+          "description": "Number of archived creatives",
+          "minimum": 0
         }
       },
-      "type": "object"
+      "additionalProperties": true
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors (e.g., invalid filters, account not found)",
+      "items": {
+        "$ref": "../core/error.json"
+      }
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -427,6 +331,110 @@
     "pagination",
     "creatives"
   ],
-  "title": "List Creatives Response",
-  "type": "object"
+  "additionalProperties": true,
+  "examples": [
+    {
+      "description": "Library query with creatives and variables",
+      "data": {
+        "query_summary": {
+          "total_matching": 2,
+          "returned": 2,
+          "filters_applied": [
+            "concept_ids=concept_holiday_2026",
+            "statuses=approved"
+          ]
+        },
+        "pagination": {
+          "has_more": false,
+          "total_count": 2
+        },
+        "creatives": [
+          {
+            "creative_id": "ft_88201",
+            "name": "Holiday Sale - Medium Rectangle",
+            "format_id": {
+              "agent_url": "https://creative.example.com",
+              "id": "display_static",
+              "width": 300,
+              "height": 250
+            },
+            "status": "approved",
+            "created_date": "2026-01-10T14:00:00Z",
+            "updated_date": "2026-02-20T09:30:00Z",
+            "assets": {
+              "banner_image": {
+                "url": "https://cdn.example.com/holiday_300x250.png",
+                "width": 300,
+                "height": 250
+              },
+              "clickthrough_url": {
+                "url": "https://acmecorp.example.com/holiday-sale"
+              }
+            },
+            "tags": [
+              "holiday_2026",
+              "display"
+            ],
+            "concept_id": "concept_holiday_2026",
+            "concept_name": "Holiday 2026 Campaign",
+            "variables": [
+              {
+                "variable_id": "headline_text",
+                "name": "Headline",
+                "variable_type": "text",
+                "default_value": "Holiday Sale - 50% Off",
+                "required": true
+              },
+              {
+                "variable_id": "hero_image",
+                "name": "Hero Image",
+                "variable_type": "image",
+                "required": false
+              }
+            ]
+          },
+          {
+            "creative_id": "ft_88202",
+            "name": "Holiday Sale - Leaderboard",
+            "format_id": {
+              "agent_url": "https://creative.example.com",
+              "id": "display_static",
+              "width": 728,
+              "height": 90
+            },
+            "status": "approved",
+            "created_date": "2026-01-10T14:30:00Z",
+            "updated_date": "2026-02-20T09:35:00Z",
+            "assets": {
+              "banner_image": {
+                "url": "https://cdn.example.com/holiday_728x90.png",
+                "width": 728,
+                "height": 90
+              },
+              "clickthrough_url": {
+                "url": "https://acmecorp.example.com/holiday-sale"
+              }
+            },
+            "tags": [
+              "holiday_2026",
+              "display"
+            ],
+            "concept_id": "concept_holiday_2026",
+            "concept_name": "Holiday 2026 Campaign",
+            "variables": []
+          }
+        ],
+        "format_summary": {
+          "display_static_300x250": 1,
+          "display_static_728x90": 1
+        },
+        "status_summary": {
+          "approved": 2,
+          "pending_review": 0,
+          "rejected": 0,
+          "archived": 0
+        }
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/preview-creative-request.json b/schemas/cache/creative/preview-creative-request.json
index 8e5d62b95..b69515f62 100644
--- a/schemas/cache/creative/preview-creative-request.json
+++ b/schemas/cache/creative/preview-creative-request.json
@@ -1,220 +1,210 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "description": "Request to generate previews of one or more creative manifests. Accepts either a single creative request or an array of requests for batch processing.",
-  "oneOf": [
-    {
-      "additionalProperties": true,
-      "description": "Single creative preview request",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "creative_manifest": {
-          "$ref": "../core/creative-manifest.json",
-          "description": "Complete creative manifest with all required assets for the format."
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "format_id": {
-          "$ref": "../core/format-id.json",
-          "description": "Format identifier for rendering the preview. Optional \u2014 defaults to creative_manifest.format_id if omitted."
-        },
-        "inputs": {
-          "description": "Array of input sets for generating multiple preview variants. Each input set defines macros and context values for one preview rendering. If not provided, creative agent will generate default previews.",
-          "items": {
-            "additionalProperties": true,
-            "properties": {
-              "context_description": {
-                "description": "Natural language description of the context for AI-generated content (e.g., 'User just searched for running shoes', 'Podcast discussing weather patterns', 'Article about electric vehicles')",
-                "type": "string"
-              },
-              "macros": {
-                "additionalProperties": {
-                  "type": "string"
+  "title": "Preview Creative Request",
+  "description": "Request to generate previews of creative manifests. Uses request_type to select single, batch, or variant mode.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "request_type": {
+      "type": "string",
+      "enum": [
+        "single",
+        "batch",
+        "variant"
+      ],
+      "description": "Preview mode. 'single' previews one creative manifest. 'batch' previews multiple creatives in one call. 'variant' replays a post-flight variant by ID."
+    },
+    "creative_manifest": {
+      "$ref": "../core/creative-manifest.json",
+      "description": "Complete creative manifest with all required assets for the format. Required when request_type is 'single'. Also accepted per item in batch mode."
+    },
+    "format_id": {
+      "$ref": "../core/format-id.json",
+      "description": "Format identifier for rendering the preview. Defaults to creative_manifest.format_id if omitted. Used in single mode."
+    },
+    "inputs": {
+      "type": "array",
+      "description": "Array of input sets for generating multiple preview variants. Each input set defines macros and context values for one preview rendering. Used in single mode.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad', 'Desktop dark mode')"
+          },
+          "macros": {
+            "type": "object",
+            "description": "Macro values to use for this preview. Supports all universal macros from the format's supported_macros list.",
+            "additionalProperties": {
+              "type": "string"
+            }
+          },
+          "context_description": {
+            "type": "string",
+            "description": "Natural language description of the context for AI-generated content (e.g., 'User just searched for running shoes', 'Podcast discussing weather patterns')"
+          }
+        },
+        "required": [
+          "name"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1
+    },
+    "template_id": {
+      "type": "string",
+      "description": "Specific template ID for custom format rendering. Used in single mode."
+    },
+    "quality": {
+      "$ref": "../enums/creative-quality.json",
+      "description": "Render quality. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. In batch mode, sets the default for all requests (individual items can override)."
+    },
+    "output_format": {
+      "$ref": "../enums/preview-output-format.json",
+      "default": "url",
+      "description": "Output format. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). In batch mode, sets the default for all requests (individual items can override). Default: 'url'."
+    },
+    "item_limit": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum number of catalog items to render per preview variant. Used in single mode. Creative agents SHOULD default to a reasonable sample when omitted and the catalog is large."
+    },
+    "requests": {
+      "type": "array",
+      "description": "Array of preview requests (1-50 items). Required when request_type is 'batch'. Each item follows the single request structure.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "format_id": {
+            "$ref": "../core/format-id.json",
+            "description": "Format identifier for rendering the preview. Defaults to creative_manifest.format_id if omitted."
+          },
+          "creative_manifest": {
+            "$ref": "../core/creative-manifest.json",
+            "description": "Complete creative manifest with all required assets."
+          },
+          "inputs": {
+            "type": "array",
+            "description": "Array of input sets for generating multiple preview variants",
+            "items": {
+              "type": "object",
+              "properties": {
+                "name": {
+                  "type": "string",
+                  "description": "Human-readable name for this input set"
                 },
-                "description": "Macro values to use for this preview. Supports all universal macros from the format's supported_macros list. See docs/creative/universal-macros.md for available macros.",
-                "type": "object"
+                "macros": {
+                  "type": "object",
+                  "description": "Macro values to use for this preview",
+                  "additionalProperties": {
+                    "type": "string"
+                  }
+                },
+                "context_description": {
+                  "type": "string",
+                  "description": "Natural language description of the context for AI-generated content"
+                }
               },
-              "name": {
-                "description": "Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad', 'Desktop dark mode')",
-                "type": "string"
-              }
+              "required": [
+                "name"
+              ],
+              "additionalProperties": true
             },
-            "required": [
-              "name"
-            ],
-            "type": "object"
+            "minItems": 1
           },
-          "minItems": 1,
-          "type": "array"
-        },
-        "item_limit": {
-          "description": "Maximum number of catalog items to render in the preview. For catalog-driven generative formats, caps how many items are rendered per preview variant. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets. Creative agents SHOULD default to a reasonable sample when omitted and the catalog is large.",
-          "minimum": 1,
-          "type": "integer"
-        },
-        "output_format": {
-          "$ref": "../enums/preview-output-format.json",
-          "default": "url",
-          "description": "Output format for previews. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding). Default: 'url' for backward compatibility."
-        },
-        "quality": {
-          "$ref": "../enums/creative-quality.json",
-          "description": "Render quality for the preview. 'draft' produces fast, lower-fidelity renderings for rapid iteration. 'production' produces full-quality renderings for final review. If omitted, the creative agent uses its own default."
-        },
-        "request_type": {
-          "const": "single",
-          "description": "Discriminator indicating this is a single preview request",
-          "type": "string"
-        },
-        "template_id": {
-          "description": "Specific template ID for custom format rendering",
-          "type": "string"
+          "template_id": {
+            "type": "string",
+            "description": "Specific template ID for custom format rendering"
+          },
+          "quality": {
+            "$ref": "../enums/creative-quality.json",
+            "description": "Render quality for this preview. Overrides batch-level default."
+          },
+          "output_format": {
+            "$ref": "../enums/preview-output-format.json",
+            "default": "url",
+            "description": "Output format for this preview. Overrides batch-level default."
+          },
+          "item_limit": {
+            "type": "integer",
+            "minimum": 1,
+            "description": "Maximum number of catalog items to render in this preview."
+          }
+        },
+        "required": [
+          "creative_manifest"
+        ],
+        "additionalProperties": true
+      },
+      "minItems": 1,
+      "maxItems": 50
+    },
+    "variant_id": {
+      "type": "string",
+      "description": "Platform-assigned variant identifier from get_creative_delivery response. Required when request_type is 'variant'."
+    },
+    "creative_id": {
+      "type": "string",
+      "description": "Creative identifier for context. Used in variant mode."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "request_type"
+  ],
+  "allOf": [
+    {
+      "if": {
+        "properties": {
+          "request_type": {
+            "const": "single"
+          }
         }
       },
-      "required": [
-        "request_type",
-        "creative_manifest"
-      ],
-      "type": "object"
+      "then": {
+        "required": [
+          "creative_manifest"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Batch preview request for multiple creatives (5-10x faster than individual calls)",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "output_format": {
-          "$ref": "../enums/preview-output-format.json",
-          "default": "url",
-          "description": "Default output format for all requests in this batch. Individual requests can override this. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding)."
-        },
-        "quality": {
-          "$ref": "../enums/creative-quality.json",
-          "description": "Default render quality for all requests in this batch. Individual requests can override this. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings."
-        },
-        "request_type": {
-          "const": "batch",
-          "description": "Discriminator indicating this is a batch preview request",
-          "type": "string"
-        },
-        "requests": {
-          "description": "Array of preview requests (1-50 items). Each follows the single request structure.",
-          "items": {
-            "additionalProperties": true,
-            "properties": {
-              "creative_manifest": {
-                "$ref": "../core/creative-manifest.json",
-                "description": "Complete creative manifest with all required assets."
-              },
-              "format_id": {
-                "$ref": "../core/format-id.json",
-                "description": "Format identifier for rendering the preview. Optional \u2014 defaults to creative_manifest.format_id if omitted."
-              },
-              "inputs": {
-                "description": "Array of input sets for generating multiple preview variants",
-                "items": {
-                  "additionalProperties": true,
-                  "properties": {
-                    "context_description": {
-                      "description": "Natural language description of the context for AI-generated content",
-                      "type": "string"
-                    },
-                    "macros": {
-                      "additionalProperties": {
-                        "type": "string"
-                      },
-                      "description": "Macro values to use for this preview",
-                      "type": "object"
-                    },
-                    "name": {
-                      "description": "Human-readable name for this input set",
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "name"
-                  ],
-                  "type": "object"
-                },
-                "minItems": 1,
-                "type": "array"
-              },
-              "item_limit": {
-                "description": "Maximum number of catalog items to render in this preview.",
-                "minimum": 1,
-                "type": "integer"
-              },
-              "output_format": {
-                "$ref": "../enums/preview-output-format.json",
-                "default": "url",
-                "description": "Output format for this preview. 'url' returns preview_url, 'html' returns preview_html."
-              },
-              "quality": {
-                "$ref": "../enums/creative-quality.json",
-                "description": "Render quality for this preview. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Overrides any batch-level default."
-              },
-              "template_id": {
-                "description": "Specific template ID for custom format rendering",
-                "type": "string"
-              }
-            },
-            "required": [
-              "creative_manifest"
-            ],
-            "type": "object"
-          },
-          "maxItems": 50,
-          "minItems": 1,
-          "type": "array"
+      "if": {
+        "properties": {
+          "request_type": {
+            "const": "batch"
+          }
         }
       },
-      "required": [
-        "request_type",
-        "requests"
-      ],
-      "type": "object"
+      "then": {
+        "required": [
+          "requests"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
-      "description": "Variant preview request - retrieve a post-flight preview of a specific creative variant that was served during delivery",
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "creative_id": {
-          "description": "Creative identifier for context",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "output_format": {
-          "$ref": "../enums/preview-output-format.json",
-          "default": "url",
-          "description": "Output format for the preview. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding)."
-        },
-        "request_type": {
-          "const": "variant",
-          "description": "Discriminator indicating this is a variant preview request",
-          "type": "string"
-        },
-        "variant_id": {
-          "description": "Platform-assigned variant identifier from get_creative_delivery response",
-          "type": "string"
+      "if": {
+        "properties": {
+          "request_type": {
+            "const": "variant"
+          }
         }
       },
-      "required": [
-        "request_type",
-        "variant_id"
-      ],
-      "type": "object"
+      "then": {
+        "required": [
+          "variant_id"
+        ]
+      }
     }
   ],
-  "title": "Preview Creative Request"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/preview-creative-response.json b/schemas/cache/creative/preview-creative-response.json
index 33301b56f..735c525b9 100644
--- a/schemas/cache/creative/preview-creative-response.json
+++ b/schemas/cache/creative/preview-creative-response.json
@@ -1,82 +1,84 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Preview Creative Response",
   "description": "Response containing preview links for one or more creatives. Format matches the request: single preview response for single requests, batch results for batch requests.",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "PreviewCreativeSingleResponse",
+      "type": "object",
       "description": "Single preview response - each preview URL returns an HTML page that can be embedded in an iframe",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "expires_at": {
-          "description": "ISO 8601 timestamp when preview links expire",
-          "format": "date-time",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "interactive_url": {
-          "description": "Optional URL to an interactive testing page that shows all preview variants with controls to switch between them, modify macro values, and test different scenarios.",
-          "format": "uri",
-          "type": "string"
+        "response_type": {
+          "type": "string",
+          "const": "single",
+          "description": "Discriminator indicating this is a single preview response"
         },
         "previews": {
+          "type": "array",
           "description": "Array of preview variants. Each preview corresponds to an input set from the request. If no inputs were provided, returns a single default preview.",
           "items": {
+            "type": "object",
             "properties": {
+              "preview_id": {
+                "type": "string",
+                "description": "Unique identifier for this preview variant"
+              },
+              "renders": {
+                "type": "array",
+                "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats (video + banner), multi-placement formats, and adaptive formats render as multiple pieces.",
+                "items": {
+                  "$ref": "preview-render.json"
+                },
+                "minItems": 1
+              },
               "input": {
+                "type": "object",
                 "description": "The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.",
                 "properties": {
-                  "context_description": {
-                    "description": "Context description applied to this variant",
-                    "type": "string"
+                  "name": {
+                    "type": "string",
+                    "description": "Human-readable name for this variant"
                   },
                   "macros": {
+                    "type": "object",
+                    "description": "Macro values applied to this variant",
                     "additionalProperties": {
                       "type": "string"
-                    },
-                    "description": "Macro values applied to this variant",
-                    "type": "object"
+                    }
                   },
-                  "name": {
-                    "description": "Human-readable name for this variant",
-                    "type": "string"
+                  "context_description": {
+                    "type": "string",
+                    "description": "Context description applied to this variant"
                   }
                 },
                 "required": [
                   "name"
-                ],
-                "type": "object"
-              },
-              "preview_id": {
-                "description": "Unique identifier for this preview variant",
-                "type": "string"
-              },
-              "renders": {
-                "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats (video + banner), multi-placement formats, and adaptive formats render as multiple pieces.",
-                "items": {
-                  "$ref": "preview-render.json"
-                },
-                "minItems": 1,
-                "type": "array"
+                ]
               }
             },
             "required": [
               "preview_id",
               "renders",
               "input"
-            ],
-            "type": "object"
+            ]
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
-        "response_type": {
-          "const": "single",
-          "description": "Discriminator indicating this is a single preview response",
-          "type": "string"
+        "interactive_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Optional URL to an interactive testing page that shows all preview variants with controls to switch between them, modify macro values, and test different scenarios."
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when preview links expire"
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -84,211 +86,211 @@
         "previews",
         "expires_at"
       ],
-      "title": "PreviewCreativeSingleResponse",
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "title": "PreviewCreativeBatchResponse",
+      "type": "object",
       "description": "Batch preview response - contains results for multiple creative requests",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
         "response_type": {
+          "type": "string",
           "const": "batch",
-          "description": "Discriminator indicating this is a batch preview response",
-          "type": "string"
+          "description": "Discriminator indicating this is a batch preview response"
         },
         "results": {
+          "type": "array",
           "description": "Array of preview results corresponding to each request in the same order. results[0] is the result for requests[0], results[1] for requests[1], etc. Order is guaranteed even when some requests fail. Each result contains either a successful preview response or an error.",
           "items": {
-            "oneOf": [
-              {
-                "properties": {
-                  "success": {
-                    "const": true,
-                    "description": "Indicates this preview request succeeded",
-                    "type": "boolean"
-                  }
-                },
-                "required": [
-                  "response"
-                ],
-                "title": "PreviewBatchResultSuccess"
-              },
-              {
-                "properties": {
-                  "success": {
-                    "const": false,
-                    "description": "Indicates this preview request failed",
-                    "type": "boolean"
-                  }
-                },
-                "required": [
-                  "errors"
-                ],
-                "title": "PreviewBatchResultError"
-              }
-            ],
+            "type": "object",
             "properties": {
-              "creative_id": {
-                "description": "ID of the creative this result corresponds to. Enables correlation when processing batch results.",
-                "type": "string"
+              "success": {
+                "type": "boolean",
+                "description": "Whether this preview request succeeded"
               },
-              "errors": {
-                "description": "Errors for failed requests",
-                "items": {
-                  "$ref": "../core/error.json"
-                },
-                "minItems": 1,
-                "type": "array"
+              "creative_id": {
+                "type": "string",
+                "description": "ID of the creative this result corresponds to. Enables correlation when processing batch results."
               },
               "response": {
+                "type": "object",
                 "description": "Preview data for successful requests",
                 "properties": {
-                  "expires_at": {
-                    "description": "When the preview URLs expire",
-                    "format": "date-time",
-                    "type": "string"
-                  },
-                  "interactive_url": {
-                    "format": "uri",
-                    "type": "string"
-                  },
                   "previews": {
+                    "type": "array",
                     "description": "Array of preview variants for this creative",
                     "items": {
+                      "type": "object",
                       "properties": {
+                        "preview_id": {
+                          "type": "string"
+                        },
+                        "renders": {
+                          "type": "array",
+                          "items": {
+                            "$ref": "preview-render.json"
+                          },
+                          "minItems": 1
+                        },
                         "input": {
+                          "type": "object",
                           "properties": {
-                            "context_description": {
+                            "name": {
                               "type": "string"
                             },
                             "macros": {
+                              "type": "object",
                               "additionalProperties": {
                                 "type": "string"
-                              },
-                              "type": "object"
+                              }
                             },
-                            "name": {
+                            "context_description": {
                               "type": "string"
                             }
                           },
                           "required": [
                             "name"
-                          ],
-                          "type": "object"
-                        },
-                        "preview_id": {
-                          "type": "string"
-                        },
-                        "renders": {
-                          "items": {
-                            "$ref": "preview-render.json"
-                          },
-                          "minItems": 1,
-                          "type": "array"
+                          ]
                         }
                       },
                       "required": [
                         "preview_id",
                         "renders",
                         "input"
-                      ],
-                      "type": "object"
+                      ]
                     },
-                    "minItems": 1,
-                    "type": "array"
+                    "minItems": 1
+                  },
+                  "interactive_url": {
+                    "type": "string",
+                    "format": "uri"
+                  },
+                  "expires_at": {
+                    "type": "string",
+                    "format": "date-time",
+                    "description": "When the preview URLs expire"
                   }
                 },
                 "required": [
                   "previews",
                   "expires_at"
-                ],
-                "type": "object"
+                ]
               },
-              "success": {
-                "description": "Whether this preview request succeeded",
-                "type": "boolean"
+              "errors": {
+                "type": "array",
+                "description": "Errors for failed requests",
+                "items": {
+                  "$ref": "../core/error.json"
+                },
+                "minItems": 1
               }
             },
             "required": [
               "success",
               "creative_id"
             ],
-            "type": "object"
+            "oneOf": [
+              {
+                "title": "PreviewBatchResultSuccess",
+                "properties": {
+                  "success": {
+                    "type": "boolean",
+                    "const": true,
+                    "description": "Indicates this preview request succeeded"
+                  }
+                },
+                "required": [
+                  "response"
+                ]
+              },
+              {
+                "title": "PreviewBatchResultError",
+                "properties": {
+                  "success": {
+                    "type": "boolean",
+                    "const": false,
+                    "description": "Indicates this preview request failed"
+                  }
+                },
+                "required": [
+                  "errors"
+                ]
+              }
+            ]
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "response_type",
         "results"
       ],
-      "title": "PreviewCreativeBatchResponse",
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "title": "PreviewCreativeVariantResponse",
+      "type": "object",
       "description": "Variant preview response - shows what a specific creative variant looked like when served during delivery",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "creative_id": {
-          "description": "Creative identifier this variant belongs to",
-          "type": "string"
-        },
-        "expires_at": {
-          "description": "ISO 8601 timestamp when preview links expire",
-          "format": "date-time",
-          "type": "string"
+        "response_type": {
+          "type": "string",
+          "const": "variant",
+          "description": "Discriminator indicating this is a variant preview response"
         },
-        "ext": {
-          "$ref": "../core/ext.json"
+        "variant_id": {
+          "type": "string",
+          "description": "Platform-assigned variant identifier"
         },
-        "manifest": {
-          "$ref": "../core/creative-manifest.json",
-          "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets"
+        "creative_id": {
+          "type": "string",
+          "description": "Creative identifier this variant belongs to"
         },
         "previews": {
+          "type": "array",
           "description": "Array of rendered pieces for this variant. Most formats render as a single piece.",
           "items": {
+            "type": "object",
             "properties": {
               "preview_id": {
-                "description": "Unique identifier for this preview",
-                "type": "string"
+                "type": "string",
+                "description": "Unique identifier for this preview"
               },
               "renders": {
+                "type": "array",
                 "description": "Rendered pieces for this variant",
                 "items": {
                   "$ref": "preview-render.json"
                 },
-                "minItems": 1,
-                "type": "array"
+                "minItems": 1
               }
             },
             "required": [
               "preview_id",
               "renders"
-            ],
-            "type": "object"
+            ]
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
-        "response_type": {
-          "const": "variant",
-          "description": "Discriminator indicating this is a variant preview response",
-          "type": "string"
+        "manifest": {
+          "$ref": "../core/creative-manifest.json",
+          "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets"
         },
-        "variant_id": {
-          "description": "Platform-assigned variant identifier",
-          "type": "string"
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when preview links expire"
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -296,9 +298,7 @@
         "variant_id",
         "previews"
       ],
-      "title": "PreviewCreativeVariantResponse",
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Preview Creative Response"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/preview-render.json b/schemas/cache/creative/preview-render.json
index 509aaf913..31ac436ad 100644
--- a/schemas/cache/creative/preview-render.json
+++ b/schemas/cache/creative/preview-render.json
@@ -1,68 +1,69 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Preview Render",
   "description": "A single rendered piece of a creative preview with discriminated output format",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "URL-only preview format",
       "properties": {
+        "render_id": {
+          "type": "string",
+          "description": "Unique identifier for this rendered piece within the variant"
+        },
+        "output_format": {
+          "type": "string",
+          "const": "url",
+          "description": "Discriminator indicating preview_url is provided"
+        },
+        "preview_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+        },
+        "role": {
+          "type": "string",
+          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        },
         "dimensions": {
+          "type": "object",
           "description": "Dimensions for this rendered piece",
           "properties": {
-            "height": {
-              "minimum": 0,
-              "type": "number"
-            },
             "width": {
-              "minimum": 0,
-              "type": "number"
+              "type": "number",
+              "minimum": 0
+            },
+            "height": {
+              "type": "number",
+              "minimum": 0
             }
           },
           "required": [
             "width",
             "height"
-          ],
-          "type": "object"
+          ]
         },
         "embedding": {
+          "type": "object",
           "description": "Optional security and embedding metadata for safe iframe integration",
           "properties": {
-            "csp_policy": {
-              "description": "Content Security Policy requirements for embedding",
-              "type": "string"
-            },
             "recommended_sandbox": {
-              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')",
-              "type": "string"
+              "type": "string",
+              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
             },
             "requires_https": {
-              "description": "Whether this output requires HTTPS for secure embedding",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Whether this output requires HTTPS for secure embedding"
             },
             "supports_fullscreen": {
-              "description": "Whether this output supports fullscreen mode",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Whether this output supports fullscreen mode"
+            },
+            "csp_policy": {
+              "type": "string",
+              "description": "Content Security Policy requirements for embedding"
             }
-          },
-          "type": "object"
-        },
-        "output_format": {
-          "const": "url",
-          "description": "Discriminator indicating preview_url is provided",
-          "type": "string"
-        },
-        "preview_url": {
-          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe.",
-          "format": "uri",
-          "type": "string"
-        },
-        "render_id": {
-          "description": "Unique identifier for this rendered piece within the variant",
-          "type": "string"
-        },
-        "role": {
-          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles.",
-          "type": "string"
+          }
         }
       },
       "required": [
@@ -71,68 +72,68 @@
         "preview_url",
         "role"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "HTML-only preview format",
       "properties": {
+        "render_id": {
+          "type": "string",
+          "description": "Unique identifier for this rendered piece within the variant"
+        },
+        "output_format": {
+          "type": "string",
+          "const": "html",
+          "description": "Discriminator indicating preview_html is provided"
+        },
+        "preview_html": {
+          "type": "string",
+          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+        },
+        "role": {
+          "type": "string",
+          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        },
         "dimensions": {
+          "type": "object",
           "description": "Dimensions for this rendered piece",
           "properties": {
-            "height": {
-              "minimum": 0,
-              "type": "number"
-            },
             "width": {
-              "minimum": 0,
-              "type": "number"
+              "type": "number",
+              "minimum": 0
+            },
+            "height": {
+              "type": "number",
+              "minimum": 0
             }
           },
           "required": [
             "width",
             "height"
-          ],
-          "type": "object"
+          ]
         },
         "embedding": {
+          "type": "object",
           "description": "Optional security and embedding metadata",
           "properties": {
-            "csp_policy": {
-              "description": "Content Security Policy requirements for embedding",
-              "type": "string"
-            },
             "recommended_sandbox": {
-              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')",
-              "type": "string"
+              "type": "string",
+              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
             },
             "requires_https": {
-              "description": "Whether this output requires HTTPS for secure embedding",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Whether this output requires HTTPS for secure embedding"
             },
             "supports_fullscreen": {
-              "description": "Whether this output supports fullscreen mode",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Whether this output supports fullscreen mode"
+            },
+            "csp_policy": {
+              "type": "string",
+              "description": "Content Security Policy requirements for embedding"
             }
-          },
-          "type": "object"
-        },
-        "output_format": {
-          "const": "html",
-          "description": "Discriminator indicating preview_html is provided",
-          "type": "string"
-        },
-        "preview_html": {
-          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.",
-          "type": "string"
-        },
-        "render_id": {
-          "description": "Unique identifier for this rendered piece within the variant",
-          "type": "string"
-        },
-        "role": {
-          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles.",
-          "type": "string"
+          }
         }
       },
       "required": [
@@ -141,73 +142,73 @@
         "preview_html",
         "role"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Both URL and HTML preview format",
       "properties": {
+        "render_id": {
+          "type": "string",
+          "description": "Unique identifier for this rendered piece within the variant"
+        },
+        "output_format": {
+          "type": "string",
+          "const": "both",
+          "description": "Discriminator indicating both preview_url and preview_html are provided"
+        },
+        "preview_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe."
+        },
+        "preview_html": {
+          "type": "string",
+          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing."
+        },
+        "role": {
+          "type": "string",
+          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        },
         "dimensions": {
+          "type": "object",
           "description": "Dimensions for this rendered piece",
           "properties": {
-            "height": {
-              "minimum": 0,
-              "type": "number"
-            },
             "width": {
-              "minimum": 0,
-              "type": "number"
+              "type": "number",
+              "minimum": 0
+            },
+            "height": {
+              "type": "number",
+              "minimum": 0
             }
           },
           "required": [
             "width",
             "height"
-          ],
-          "type": "object"
+          ]
         },
         "embedding": {
+          "type": "object",
           "description": "Optional security and embedding metadata for safe iframe integration",
           "properties": {
-            "csp_policy": {
-              "description": "Content Security Policy requirements for embedding",
-              "type": "string"
-            },
             "recommended_sandbox": {
-              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')",
-              "type": "string"
+              "type": "string",
+              "description": "Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
             },
             "requires_https": {
-              "description": "Whether this output requires HTTPS for secure embedding",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Whether this output requires HTTPS for secure embedding"
             },
             "supports_fullscreen": {
-              "description": "Whether this output supports fullscreen mode",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Whether this output supports fullscreen mode"
+            },
+            "csp_policy": {
+              "type": "string",
+              "description": "Content Security Policy requirements for embedding"
             }
-          },
-          "type": "object"
-        },
-        "output_format": {
-          "const": "both",
-          "description": "Discriminator indicating both preview_url and preview_html are provided",
-          "type": "string"
-        },
-        "preview_html": {
-          "description": "Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.",
-          "type": "string"
-        },
-        "preview_url": {
-          "description": "URL to an HTML page that renders this piece. Can be embedded in an iframe.",
-          "format": "uri",
-          "type": "string"
-        },
-        "render_id": {
-          "description": "Unique identifier for this rendered piece within the variant",
-          "type": "string"
-        },
-        "role": {
-          "description": "Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles.",
-          "type": "string"
+          }
         }
       },
       "required": [
@@ -217,8 +218,7 @@
         "preview_html",
         "role"
       ],
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Preview Render"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/sync-creatives-request.json b/schemas/cache/creative/sync-creatives-request.json
index 5fc06a925..8d43d94c6 100644
--- a/schemas/cache/creative/sync-creatives-request.json
+++ b/schemas/cache/creative/sync-creatives-request.json
@@ -1,81 +1,191 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Creatives Request",
   "description": "Request parameters for syncing creative assets with upsert semantics - supports bulk operations, scoped updates, and assignment management",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account that owns these creatives."
+    },
+    "creatives": {
+      "type": "array",
+      "description": "Array of creative assets to sync (create or update)",
+      "items": {
+        "$ref": "../core/creative-asset.json"
+      },
+      "minItems": 1,
+      "maxItems": 100
+    },
+    "creative_ids": {
+      "type": "array",
+      "description": "Optional filter to limit sync scope to specific creative IDs. When provided, only these creatives will be created/updated. Other creatives in the library are unaffected. Useful for partial updates and error recovery.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "maxItems": 100
+    },
+    "assignments": {
+      "type": "array",
+      "description": "Optional bulk assignment of creatives to packages. Each entry maps one creative to one package with optional weight and placement targeting. Standalone creative agents that do not manage media buys ignore this field.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "creative_id": {
+            "type": "string",
+            "description": "ID of the creative to assign"
+          },
+          "package_id": {
+            "type": "string",
+            "description": "ID of the package to assign the creative to"
+          },
+          "weight": {
+            "type": "number",
+            "description": "Relative delivery weight (0-100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
+            "minimum": 0,
+            "maximum": 100
+          },
+          "placement_ids": {
+            "type": "array",
+            "description": "Restrict this creative to specific placements within the package. When omitted, the creative is eligible for all placements.",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          }
+        },
+        "required": [
+          "creative_id",
+          "package_id"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated idempotency key for safe retries. If a sync fails without a response, resending with the same idempotency_key guarantees at-most-once execution. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, creatives not included in this sync will be archived. Use with caution for full library replacement. Invalid when creative_ids is provided \u2014 delete_missing applies to the entire library scope, not a filtered subset."
+    },
+    "dry_run": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, preview changes without applying them. Returns what would be created/updated/deleted."
+    },
+    "validation_mode": {
+      "$ref": "../enums/validation-mode.json",
+      "default": "strict",
+      "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid creatives and reports errors."
+    },
+    "push_notification_config": {
+      "$ref": "../core/push-notification-config.json",
+      "description": "Optional webhook configuration for async sync notifications. The agent will send a webhook when sync completes if the operation takes longer than immediate response time (typically for large bulk operations or manual approval/HITL)."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account",
+    "creatives"
+  ],
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Full sync with hosted video creative",
       "data": {
+        "idempotency_key": "550e8400-e29b-41d4-a716-446655440000",
         "account": {
           "account_id": "acct_acmecorp"
         },
-        "assignments": [
-          {
-            "creative_id": "hero_video_30s",
-            "package_id": "pkg_ctv_001"
-          },
-          {
-            "creative_id": "hero_video_30s",
-            "package_id": "pkg_ctv_002"
-          }
-        ],
         "creatives": [
           {
-            "assets": {
-              "video": {
-                "duration_ms": 30000,
-                "height": 1080,
-                "url": "https://cdn.example.com/hero-video.mp4",
-                "width": 1920
-              }
-            },
             "creative_id": "hero_video_30s",
+            "name": "Brand Hero Video 30s",
             "format_id": {
               "agent_url": "https://creative.adcontextprotocol.org",
               "id": "video_standard_30s"
             },
-            "name": "Brand Hero Video 30s",
+            "assets": {
+              "video": {
+                "url": "https://cdn.example.com/hero-video.mp4",
+                "width": 1920,
+                "height": 1080,
+                "duration_ms": 30000
+              }
+            },
             "tags": [
               "q1_2026",
               "video"
             ]
           }
+        ],
+        "assignments": [
+          {
+            "creative_id": "hero_video_30s",
+            "package_id": "pkg_ctv_001"
+          },
+          {
+            "creative_id": "hero_video_30s",
+            "package_id": "pkg_ctv_002"
+          }
         ]
-      },
-      "description": "Full sync with hosted video creative"
+      }
     },
     {
+      "description": "Generative creative with approval",
       "data": {
+        "idempotency_key": "5f8b1f3a-1234-4a5b-9cde-1234567890ab",
         "account": {
           "account_id": "acct_acmecorp"
         },
         "creatives": [
           {
-            "assets": {
-              "generation_prompt": {
-                "content": "Create a warm, festive holiday campaign featuring winter products"
-              },
-              "product_catalog": {
-                "catalog_id": "winter-products",
-                "type": "product"
-              }
-            },
             "creative_id": "holiday_hero",
+            "name": "Holiday Campaign Hero",
             "format_id": {
               "agent_url": "https://creative.example.com",
               "id": "premium_bespoke_display"
             },
-            "name": "Holiday Campaign Hero",
+            "assets": {
+              "product_catalog": {
+                "type": "product",
+                "catalog_id": "winter-products"
+              },
+              "generation_prompt": {
+                "content": "Create a warm, festive holiday campaign featuring winter products"
+              }
+            },
             "tags": [
               "holiday",
               "q4_2026"
             ]
           }
         ]
-      },
-      "description": "Generative creative with approval"
+      }
     },
     {
+      "description": "Scoped update using creative_ids filter",
       "data": {
+        "idempotency_key": "6a9c2f4b-5678-49ab-8def-fedcba987654",
         "account": {
           "account_id": "acct_acmecorp"
         },
@@ -85,137 +195,38 @@
         ],
         "creatives": [
           {
-            "assets": {
-              "video": {
-                "duration_ms": 30000,
-                "height": 1080,
-                "url": "https://cdn.example.com/updated-hero.mp4",
-                "width": 1920
-              }
-            },
             "creative_id": "hero_video_30s",
+            "name": "Brand Hero Video 30s - Updated",
             "format_id": {
               "agent_url": "https://creative.adcontextprotocol.org",
               "id": "video_standard_30s"
             },
-            "name": "Brand Hero Video 30s - Updated"
-          },
-          {
             "assets": {
-              "image": {
-                "height": 250,
-                "url": "https://cdn.example.com/updated-banner.png",
-                "width": 300
+              "video": {
+                "url": "https://cdn.example.com/updated-hero.mp4",
+                "width": 1920,
+                "height": 1080,
+                "duration_ms": 30000
               }
-            },
+            }
+          },
+          {
             "creative_id": "banner_300x250",
+            "name": "Display Banner 300x250 - Updated",
             "format_id": {
               "agent_url": "https://creative.adcontextprotocol.org",
               "id": "display_300x250"
             },
-            "name": "Display Banner 300x250 - Updated"
+            "assets": {
+              "image": {
+                "url": "https://cdn.example.com/updated-banner.png",
+                "width": 300,
+                "height": 250
+              }
+            }
           }
         ]
-      },
-      "description": "Scoped update using creative_ids filter"
+      }
     }
-  ],
-  "properties": {
-    "account": {
-      "$ref": "../core/account-ref.json",
-      "description": "Account that owns these creatives."
-    },
-    "assignments": {
-      "description": "Optional bulk assignment of creatives to packages. Each entry maps one creative to one package with optional weight and placement targeting. Standalone creative agents that do not manage media buys ignore this field.",
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "creative_id": {
-            "description": "ID of the creative to assign",
-            "type": "string"
-          },
-          "package_id": {
-            "description": "ID of the package to assign the creative to",
-            "type": "string"
-          },
-          "placement_ids": {
-            "description": "Restrict this creative to specific placements within the package. When omitted, the creative is eligible for all placements.",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
-          },
-          "weight": {
-            "description": "Relative delivery weight (0-100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).",
-            "maximum": 100,
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "required": [
-          "creative_id",
-          "package_id"
-        ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "creative_ids": {
-      "description": "Optional filter to limit sync scope to specific creative IDs. When provided, only these creatives will be created/updated. Other creatives in the library are unaffected. Useful for partial updates and error recovery.",
-      "items": {
-        "type": "string"
-      },
-      "maxItems": 100,
-      "minItems": 1,
-      "type": "array"
-    },
-    "creatives": {
-      "description": "Array of creative assets to sync (create or update)",
-      "items": {
-        "$ref": "../core/creative-asset.json"
-      },
-      "maxItems": 100,
-      "minItems": 1,
-      "type": "array"
-    },
-    "delete_missing": {
-      "default": false,
-      "description": "When true, creatives not included in this sync will be archived. Use with caution for full library replacement. Invalid when creative_ids is provided \u2014 delete_missing applies to the entire library scope, not a filtered subset.",
-      "type": "boolean"
-    },
-    "dry_run": {
-      "default": false,
-      "description": "When true, preview changes without applying them. Returns what would be created/updated/deleted.",
-      "type": "boolean"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "idempotency_key": {
-      "description": "Client-generated idempotency key for safe retries. If a sync fails without a response, resending with the same idempotency_key guarantees at-most-once execution. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
-      "minLength": 16,
-      "type": "string"
-    },
-    "push_notification_config": {
-      "$ref": "../core/push-notification-config.json",
-      "description": "Optional webhook configuration for async sync notifications. The agent will send a webhook when sync completes if the operation takes longer than immediate response time (typically for large bulk operations or manual approval/HITL)."
-    },
-    "validation_mode": {
-      "$ref": "../enums/validation-mode.json",
-      "default": "strict",
-      "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid creatives and reports errors."
-    }
-  },
-  "required": [
-    "account",
-    "creatives"
-  ],
-  "title": "Sync Creatives Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/sync-creatives-response.json b/schemas/cache/creative/sync-creatives-response.json
index 36ec5cc0f..8d56b3bb7 100644
--- a/schemas/cache/creative/sync-creatives-response.json
+++ b/schemas/cache/creative/sync-creatives-response.json
@@ -1,24 +1,28 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Creatives Response",
   "description": "Response from creative sync operation. Returns either per-creative results (best-effort processing) OR operation-level errors (complete failure). This enforces atomic semantics at the operation level while allowing per-item failures within successful operations.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "SyncCreativesSuccess",
       "description": "Success response - sync operation processed creatives (may include per-item failures)",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
+        "dry_run": {
+          "type": "boolean",
+          "description": "Whether this was a dry run (no actual changes made)"
         },
         "creatives": {
+          "type": "array",
           "description": "Results for each creative processed. Items with action='failed' indicate per-item validation/processing failures, not operation-level failures.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
+              "creative_id": {
+                "type": "string",
+                "description": "Creative ID from the request"
+              },
               "account": {
                 "$ref": "../core/account.json",
                 "description": "Account that owns this creative"
@@ -27,93 +31,112 @@
                 "$ref": "../enums/creative-action.json",
                 "description": "Action taken for this creative"
               },
-              "assigned_to": {
-                "description": "Package IDs this creative was successfully assigned to (only present when assignments were requested)",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
-              },
-              "assignment_errors": {
-                "additionalProperties": true,
-                "description": "Assignment errors by package ID (only present when assignment failures occurred)",
-                "patternProperties": {
-                  "^[a-zA-Z0-9_-]+$": {
-                    "description": "Error message for this package assignment",
-                    "type": "string"
-                  }
-                },
-                "type": "object"
+              "platform_id": {
+                "type": "string",
+                "description": "Platform-specific ID assigned to the creative"
               },
               "changes": {
+                "type": "array",
                 "description": "Field names that were modified (only present when action='updated')",
                 "items": {
                   "type": "string"
-                },
-                "type": "array"
-              },
-              "creative_id": {
-                "description": "Creative ID from the request",
-                "type": "string"
+                }
               },
               "errors": {
+                "type": "array",
                 "description": "Validation or processing errors (only present when action='failed')",
                 "items": {
-                  "type": "string"
-                },
-                "type": "array"
-              },
-              "expires_at": {
-                "description": "ISO 8601 timestamp when preview link expires (only present when preview_url exists)",
-                "format": "date-time",
-                "type": "string"
+                  "$ref": "../core/error.json"
+                }
               },
-              "platform_id": {
-                "description": "Platform-specific ID assigned to the creative",
-                "type": "string"
+              "warnings": {
+                "type": "array",
+                "description": "Non-fatal warnings about this creative",
+                "items": {
+                  "type": "string"
+                }
               },
               "preview_url": {
-                "description": "Preview URL for generative creatives (only present for generative formats)",
+                "type": "string",
                 "format": "uri",
-                "type": "string"
+                "description": "Preview URL for generative creatives (only present for generative formats)"
               },
-              "warnings": {
-                "description": "Non-fatal warnings about this creative",
+              "expires_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp when preview link expires (only present when preview_url exists)"
+              },
+              "assigned_to": {
+                "type": "array",
+                "description": "Package IDs this creative was successfully assigned to (only present when assignments were requested)",
                 "items": {
                   "type": "string"
+                }
+              },
+              "assignment_errors": {
+                "type": "object",
+                "description": "Assignment errors by package ID (only present when assignment failures occurred)",
+                "patternProperties": {
+                  "^[a-zA-Z0-9_-]+$": {
+                    "type": "string",
+                    "description": "Error message for this package assignment"
+                  }
                 },
-                "type": "array"
+                "additionalProperties": true
               }
             },
             "required": [
               "creative_id",
               "action"
             ],
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": true
+          }
         },
-        "dry_run": {
-          "description": "Whether this was a dry run (no actual changes made)",
-          "type": "boolean"
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
         }
       },
       "required": [
         "creatives"
       ],
-      "title": "SyncCreativesSuccess",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
+      "title": "SyncCreativesError",
       "description": "Error response - operation failed completely, no creatives were processed",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors that prevented processing any creatives (e.g., authentication failure, service unavailable, invalid request format)",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
       "not": {
         "anyOf": [
           {
@@ -132,30 +155,7 @@
             ]
           }
         ]
-      },
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "errors": {
-          "description": "Operation-level errors that prevented processing any creatives (e.g., authentication failure, service unavailable, invalid request format)",
-          "items": {
-            "$ref": "../core/error.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        }
-      },
-      "required": [
-        "errors"
-      ],
-      "title": "SyncCreativesError",
-      "type": "object"
+      }
     }
-  ],
-  "title": "Sync Creatives Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/account-status.json b/schemas/cache/enums/account-status.json
index 16cfa682d..328b63f0d 100644
--- a/schemas/cache/enums/account-status.json
+++ b/schemas/cache/enums/account-status.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Account Status",
   "description": "Advertiser account status in the account lifecycle",
+  "type": "string",
   "enum": [
     "active",
     "pending_approval",
@@ -11,12 +13,10 @@
   ],
   "enumDescriptions": {
     "active": "Account is operational and can create media buys",
-    "closed": "Was active, now terminated \u2014 terminal state",
-    "payment_required": "Credit limit reached or funds depleted",
     "pending_approval": "Seller is reviewing the account (credit, contracts)",
     "rejected": "Seller declined the account request \u2014 terminal state",
-    "suspended": "Was active, now paused \u2014 operations gated"
-  },
-  "title": "Account Status",
-  "type": "string"
+    "payment_required": "Credit limit reached or funds depleted",
+    "suspended": "Was active, now paused \u2014 operations gated",
+    "closed": "Was active, now terminated \u2014 terminal state"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/action-source.json b/schemas/cache/enums/action-source.json
index 5fda6e014..cd559a64a 100644
--- a/schemas/cache/enums/action-source.json
+++ b/schemas/cache/enums/action-source.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Action Source",
   "description": "Where the conversion event originated",
+  "type": "string",
   "enum": [
     "website",
     "app",
@@ -13,16 +15,14 @@
     "other"
   ],
   "enumDescriptions": {
+    "website": "Event occurred on a website",
     "app": "Event occurred in a mobile or desktop app",
+    "offline": "Event occurred offline (imported data)",
+    "phone_call": "Event originated from a phone call",
     "chat": "Event originated from a chat conversation",
     "email": "Event originated from an email interaction",
     "in_store": "Event occurred at a physical retail location",
-    "offline": "Event occurred offline (imported data)",
-    "other": "Other source (specify in ext)",
-    "phone_call": "Event originated from a phone call",
     "system_generated": "Event generated by an automated system",
-    "website": "Event occurred on a website"
-  },
-  "title": "Action Source",
-  "type": "string"
+    "other": "Other source (specify in ext)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/adcp-domain.json b/schemas/cache/enums/adcp-domain.json
deleted file mode 100644
index 87f75aa93..000000000
--- a/schemas/cache/enums/adcp-domain.json
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "description": "AdCP protocol domains for task categorization",
-  "enum": [
-    "media-buy",
-    "signals",
-    "governance",
-    "creative",
-    "brand"
-  ],
-  "enumDescriptions": {
-    "brand": "Brand identity, rights discovery, and rights acquisition",
-    "creative": "Creative asset management, format discovery, and rendering",
-    "governance": "Property governance (identity, authorization, data, selection), brand standards, and compliance",
-    "media-buy": "Campaign creation, package management, delivery optimization, and conversion tracking",
-    "signals": "Audience signal discovery and activation"
-  },
-  "title": "AdCP Domain",
-  "type": "string"
-}
\ No newline at end of file
diff --git a/schemas/cache/enums/adcp-protocol.json b/schemas/cache/enums/adcp-protocol.json
new file mode 100644
index 000000000..d0619aad8
--- /dev/null
+++ b/schemas/cache/enums/adcp-protocol.json
@@ -0,0 +1,22 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "AdCP Protocol",
+  "description": "AdCP protocols for task categorization \u2014 referenced by tasks-list-request, webhook payloads, and other task-lifecycle surfaces. Values are kebab-case. This enum shares the same axis as supported_protocols (see /schemas/protocol/get-adcp-capabilities-response.json), which uses snake_case on the wire. Compliance testing support is declared via the `capabilities.compliance_testing` block, not as a protocol value.",
+  "type": "string",
+  "enum": [
+    "media-buy",
+    "signals",
+    "governance",
+    "creative",
+    "brand",
+    "sponsored-intelligence"
+  ],
+  "enumDescriptions": {
+    "media-buy": "Campaign creation, package management, delivery optimization, and conversion tracking",
+    "signals": "Audience signal discovery and activation",
+    "governance": "Property governance (identity, authorization, data, selection), brand standards, and compliance",
+    "creative": "Creative asset management, format discovery, and rendering",
+    "brand": "Brand identity, rights discovery, and rights acquisition",
+    "sponsored-intelligence": "AI-mediated commerce and conversational sponsored experiences, including buyer-agent sessions and measurement of AI-surfaced outcomes"
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/adjustment-kind.json b/schemas/cache/enums/adjustment-kind.json
index 3fb68d75f..7a634476f 100644
--- a/schemas/cache/enums/adjustment-kind.json
+++ b/schemas/cache/enums/adjustment-kind.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Price Adjustment Kind",
   "description": "Categorizes how a price adjustment affects the transaction",
+  "type": "string",
   "enum": [
     "fee",
     "discount",
@@ -8,11 +10,9 @@
     "settlement"
   ],
   "enumDescriptions": {
-    "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
-    "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
     "fee": "Increases the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., ad serving fees, data/targeting surcharges, brand safety verification).",
+    "discount": "Reduces the price the buyer pays and the revenue the seller receives. Applied between list_price and fixed_price (e.g., volume discounts, negotiated rates, early booking).",
+    "commission": "Does not change the buyer's price or budget. Represents a revenue split \u2014 the portion retained by an intermediary (e.g., agency commission). Budgets are managed inclusive of commissions.",
     "settlement": "Does not change the committed price or budget. Applied at invoicing or payment time (e.g., cash discount for early payment). Informational for buyer agents; affects actual settlement amount."
-  },
-  "title": "Price Adjustment Kind",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/advertiser-industry.json b/schemas/cache/enums/advertiser-industry.json
index 872204036..703acbee6 100644
--- a/schemas/cache/enums/advertiser-industry.json
+++ b/schemas/cache/enums/advertiser-industry.json
@@ -1,6 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Advertiser Industry",
   "description": "Standardized advertiser industry classification. Top-level categories classify the advertiser's primary business. Dot-notation subcategories (e.g., 'media_entertainment.podcasts') provide platform-specific precision where needed. Sellers map these to platform-native codes (Spotify ADV categories, LinkedIn industry IDs, IAB Content Taxonomy, etc.). Sellers MUST accept unknown values gracefully \u2014 treat unrecognized values as the parent category (strip the subcategory) or as uncategorized. This ensures forward compatibility as the taxonomy evolves.",
+  "type": "string",
+  "x-extensible": true,
+  "x-pattern": "^[a-z][a-z0-9_]+(\\.[a-z][a-z0-9_]+)?$",
   "enum": [
     "automotive",
     "automotive.electric_vehicles",
@@ -87,21 +91,21 @@
   "enumDescriptions": {
     "automotive": "Automotive manufacturers, dealerships, and auto industry",
     "automotive.electric_vehicles": "Electric vehicle manufacturers and charging infrastructure",
-    "automotive.luxury": "Luxury and premium automotive brands",
     "automotive.parts_accessories": "Auto parts, accessories, and aftermarket products",
+    "automotive.luxury": "Luxury and premium automotive brands",
     "beauty_cosmetics": "Beauty, cosmetics, and prestige skincare brands. Distinct from cpg.personal_care \u2014 use beauty_cosmetics for brands whose identity is rooted in beauty (L'Oreal Paris, Estee Lauder, Sephora) and cpg.personal_care for mass-market personal hygiene (Dove, Colgate)",
+    "beauty_cosmetics.skincare": "Skincare brands and dermatological products",
     "beauty_cosmetics.fragrance": "Perfume and fragrance brands",
     "beauty_cosmetics.haircare": "Professional and prestige haircare brands",
-    "beauty_cosmetics.skincare": "Skincare brands and dermatological products",
     "cannabis": "Cannabis products and dispensaries. Subject to heavy platform restrictions \u2014 most platforms require explicit category declaration for ad acceptance",
     "cpg": "Consumer packaged goods \u2014 mass-market products sold through retail. For food and beverage manufacturers, use food_beverage. For prestige beauty, use beauty_cosmetics",
-    "cpg.household": "Household cleaning and maintenance products",
     "cpg.personal_care": "Mass-market personal care and hygiene products (deodorant, toothpaste, soap). For prestige beauty brands, use beauty_cosmetics",
+    "cpg.household": "Household cleaning and maintenance products",
     "dating": "Dating apps and matchmaking services. Subject to platform restrictions similar to gambling_betting",
     "education": "Educational institutions and learning services",
     "education.higher_education": "Universities, colleges, and graduate programs",
-    "education.k12": "Primary and secondary education",
     "education.online_learning": "Online courses, MOOCs, and digital education platforms",
+    "education.k12": "Primary and secondary education",
     "energy_utilities": "Energy companies and utilities",
     "energy_utilities.renewable": "Renewable energy, solar, wind, and clean technology",
     "fashion_apparel": "Clothing, footwear, and fashion accessories",
@@ -109,66 +113,62 @@
     "fashion_apparel.sportswear": "Athletic and sportswear brands",
     "finance": "Financial services, banking, and insurance",
     "finance.banking": "Retail and commercial banking",
-    "finance.cryptocurrency": "Cryptocurrency exchanges and blockchain financial products",
     "finance.insurance": "Insurance products and services",
     "finance.investment": "Investment, wealth management, and brokerage",
+    "finance.cryptocurrency": "Cryptocurrency exchanges and blockchain financial products",
     "food_beverage": "Food and beverage companies \u2014 manufacturers (Coca-Cola, Nestle), restaurants, and alcohol brands. For non-food packaged goods, use cpg",
     "food_beverage.alcohol": "Alcoholic beverages (beer, wine, spirits). Subject to platform age-gating and regional restrictions",
-    "food_beverage.packaged_goods": "Packaged food and non-alcoholic beverages",
     "food_beverage.restaurants": "Restaurants, fast food, and food delivery",
+    "food_beverage.packaged_goods": "Packaged food and non-alcoholic beverages",
     "gambling_betting": "Gambling, sports betting, and wagering. Subject to heavy platform restrictions \u2014 most platforms require explicit category declaration",
-    "gambling_betting.casino": "Online casinos and traditional gambling",
     "gambling_betting.sports_betting": "Sports betting and daily fantasy sports",
+    "gambling_betting.casino": "Online casinos and traditional gambling",
     "gaming": "Video games and interactive entertainment",
+    "gaming.mobile": "Mobile gaming",
     "gaming.console_pc": "Console and PC gaming",
     "gaming.esports": "Esports teams, tournaments, and streaming",
-    "gaming.mobile": "Mobile gaming",
     "government_nonprofit": "Government agencies and nonprofit organizations",
-    "government_nonprofit.charity": "Charitable organizations and fundraising",
     "government_nonprofit.political": "Political advertising and advocacy. Subject to platform transparency and disclosure requirements",
+    "government_nonprofit.charity": "Charitable organizations and fundraising",
     "healthcare": "Healthcare, pharmaceuticals, and medical",
-    "healthcare.medical_devices": "Medical devices and health technology",
     "healthcare.pharmaceutical": "Pharmaceutical and biotech companies. Subject to platform restrictions on drug advertising",
+    "healthcare.medical_devices": "Medical devices and health technology",
     "healthcare.wellness": "Wellness, supplements, and alternative health",
     "home_garden": "Home furnishing, improvement, and garden",
     "home_garden.furniture": "Furniture and home decor",
     "home_garden.home_improvement": "Home improvement, tools, and renovation",
     "media_entertainment": "Media, entertainment, and content",
-    "media_entertainment.film_tv": "Film studios, TV networks, and streaming services",
-    "media_entertainment.live_events": "Concerts, festivals, and live entertainment",
-    "media_entertainment.music": "Music labels, streaming, and artists",
     "media_entertainment.podcasts": "Podcast networks and podcast-first brands",
+    "media_entertainment.music": "Music labels, streaming, and artists",
+    "media_entertainment.film_tv": "Film studios, TV networks, and streaming services",
     "media_entertainment.publishing": "Book publishers, magazines, and digital publications",
+    "media_entertainment.live_events": "Concerts, festivals, and live entertainment",
     "pets": "Pet food, supplies, and veterinary services",
     "professional_services": "Professional and business services",
-    "professional_services.consulting": "Management and business consulting",
     "professional_services.legal": "Law firms and legal services",
+    "professional_services.consulting": "Management and business consulting",
     "real_estate": "Real estate, property, and construction",
-    "real_estate.commercial": "Commercial real estate and property management",
     "real_estate.residential": "Residential real estate and housing",
+    "real_estate.commercial": "Commercial real estate and property management",
     "recruitment_hr": "Job boards, staffing agencies, and HR technology",
     "retail": "Retail stores and e-commerce",
-    "retail.department_stores": "Department stores and multi-brand retailers",
     "retail.ecommerce": "Online-first retailers and marketplaces",
+    "retail.department_stores": "Department stores and multi-brand retailers",
     "sports_fitness": "Sports, fitness, and athletics",
     "sports_fitness.equipment": "Sports and fitness equipment",
     "sports_fitness.teams_leagues": "Professional sports teams and leagues",
     "technology": "Technology companies and digital services",
-    "technology.ai_ml": "Artificial intelligence and machine learning companies",
-    "technology.hardware": "Consumer electronics and hardware",
     "technology.software": "Software products, platforms, and SaaS",
+    "technology.hardware": "Consumer electronics and hardware",
+    "technology.ai_ml": "Artificial intelligence and machine learning companies",
     "telecom": "Telecommunications and connectivity",
-    "telecom.internet_providers": "Internet service providers and broadband",
     "telecom.mobile_carriers": "Mobile network operators",
+    "telecom.internet_providers": "Internet service providers and broadband",
     "transportation_logistics": "Shipping, logistics, and freight services",
     "travel_hospitality": "Travel, hospitality, and tourism",
     "travel_hospitality.airlines": "Airlines and air travel",
-    "travel_hospitality.cruise": "Cruise lines and ocean travel",
     "travel_hospitality.hotels": "Hotels, resorts, and accommodation",
+    "travel_hospitality.cruise": "Cruise lines and ocean travel",
     "travel_hospitality.tourism": "Tourism boards and travel agencies"
-  },
-  "title": "Advertiser Industry",
-  "type": "string",
-  "x-extensible": true,
-  "x-pattern": "^[a-z][a-z0-9_]+(\\.[a-z][a-z0-9_]+)?$"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/age-verification-method.json b/schemas/cache/enums/age-verification-method.json
index 48a06e768..453f14aa8 100644
--- a/schemas/cache/enums/age-verification-method.json
+++ b/schemas/cache/enums/age-verification-method.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Age Verification Method",
   "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
+  "type": "string",
   "enum": [
     "facial_age_estimation",
     "id_document",
     "digital_id",
     "credit_card",
     "world_id"
-  ],
-  "title": "Age Verification Method",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/asset-content-type.json b/schemas/cache/enums/asset-content-type.json
index 31efb1454..cf3eec9a6 100644
--- a/schemas/cache/enums/asset-content-type.json
+++ b/schemas/cache/enums/asset-content-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Asset Content Type",
   "description": "Types of content that can be used as creative assets. Describes what KIND of content an asset contains (image, video, code, etc.), not where it displays.",
+  "type": "string",
   "enum": [
     "image",
     "video",
@@ -16,7 +18,5 @@
     "webhook",
     "brief",
     "catalog"
-  ],
-  "title": "Asset Content Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/attribution-model.json b/schemas/cache/enums/attribution-model.json
index b8d01696f..2d03f820a 100644
--- a/schemas/cache/enums/attribution-model.json
+++ b/schemas/cache/enums/attribution-model.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Attribution Model",
   "description": "Attribution model used for conversion measurement",
+  "type": "string",
   "enum": [
     "last_touch",
     "first_touch",
     "linear",
     "time_decay",
     "data_driven"
-  ],
-  "title": "Attribution Model",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/audience-source.json b/schemas/cache/enums/audience-source.json
index cb8c608f5..869e44f12 100644
--- a/schemas/cache/enums/audience-source.json
+++ b/schemas/cache/enums/audience-source.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Audience Source",
   "description": "Origin of an audience segment in delivery reporting breakdowns. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational.",
+  "type": "string",
   "enum": [
     "synced",
     "platform",
@@ -8,7 +10,5 @@
     "lookalike",
     "retargeting",
     "unknown"
-  ],
-  "title": "Audience Source",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/auth-scheme.json b/schemas/cache/enums/auth-scheme.json
index c3ee2bf94..17660ea13 100644
--- a/schemas/cache/enums/auth-scheme.json
+++ b/schemas/cache/enums/auth-scheme.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Authentication Scheme",
   "description": "Authentication schemes for push notification endpoints",
+  "type": "string",
   "enum": [
     "Bearer",
     "HMAC-SHA256"
-  ],
-  "title": "Authentication Scheme",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/available-metric.json b/schemas/cache/enums/available-metric.json
index 1cb359a46..ecd9cc302 100644
--- a/schemas/cache/enums/available-metric.json
+++ b/schemas/cache/enums/available-metric.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Available Metric",
   "description": "Standard delivery and performance metrics available for reporting",
+  "type": "string",
   "enum": [
     "impressions",
     "spend",
@@ -24,7 +26,5 @@
     "quartile_data",
     "dooh_metrics",
     "cost_per_click"
-  ],
-  "title": "Available Metric",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/brand-agent-type.json b/schemas/cache/enums/brand-agent-type.json
new file mode 100644
index 000000000..701d4bc19
--- /dev/null
+++ b/schemas/cache/enums/brand-agent-type.json
@@ -0,0 +1,26 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Brand Agent Type",
+  "description": "Functional roles for agents declared in brand.json. Each type represents a distinct capability that a brand or house can expose via an agent endpoint.",
+  "type": "string",
+  "enum": [
+    "brand",
+    "rights",
+    "measurement",
+    "governance",
+    "creative",
+    "sales",
+    "buying",
+    "signals"
+  ],
+  "enumDescriptions": {
+    "brand": "Provides brand identity data (logos, colors, tone, guidelines) via MCP",
+    "rights": "Handles rights discovery, pricing, and acquisition for licensable assets",
+    "measurement": "Provides campaign measurement, attribution, and reporting services",
+    "governance": "Enforces brand safety, compliance, and policy rules",
+    "creative": "Manages creative asset generation, review, and approval",
+    "sales": "Sells inventory on behalf of publishers and media owners",
+    "buying": "Executes media buying on behalf of the brand",
+    "signals": "Provides audience signal discovery and activation"
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/budget-authority-level.json b/schemas/cache/enums/budget-authority-level.json
index 0598aac4e..a94d937d6 100644
--- a/schemas/cache/enums/budget-authority-level.json
+++ b/schemas/cache/enums/budget-authority-level.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Budget Authority Level",
   "description": "The level of autonomy an agent has over budget decisions within a campaign plan.",
+  "type": "string",
   "enum": [
     "agent_full",
     "agent_limited",
@@ -10,7 +12,5 @@
     "agent_full": "Agent can execute any spend within the total budget without human approval.",
     "agent_limited": "Agent can execute within thresholds but must escalate large changes (defined by reallocation_threshold).",
     "human_required": "Every spend commitment requires human approval."
-  },
-  "title": "Budget Authority Level",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/canceled-by.json b/schemas/cache/enums/canceled-by.json
index e0f7418fa..d10aa9264 100644
--- a/schemas/cache/enums/canceled-by.json
+++ b/schemas/cache/enums/canceled-by.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Canceled By",
   "description": "Identifies which party initiated a cancellation.",
+  "type": "string",
   "enum": [
     "buyer",
     "seller"
@@ -8,7 +10,5 @@
   "enumDescriptions": {
     "buyer": "Cancellation initiated by the buyer via update_media_buy",
     "seller": "Cancellation initiated by the seller (e.g., policy violation, inventory withdrawal)"
-  },
-  "title": "Canceled By",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/catalog-action.json b/schemas/cache/enums/catalog-action.json
index 4b5896715..60f75ef04 100644
--- a/schemas/cache/enums/catalog-action.json
+++ b/schemas/cache/enums/catalog-action.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Catalog Action",
   "description": "Action taken on a catalog during sync operation",
+  "type": "string",
   "enum": [
     "created",
     "updated",
     "unchanged",
     "failed",
     "deleted"
-  ],
-  "title": "Catalog Action",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/catalog-item-status.json b/schemas/cache/enums/catalog-item-status.json
index cc7d2ca49..193131a13 100644
--- a/schemas/cache/enums/catalog-item-status.json
+++ b/schemas/cache/enums/catalog-item-status.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Catalog Item Status",
   "description": "Approval status of an individual item within a synced catalog. Platforms review catalog items and may approve, reject, or flag them for issues (similar to Google Merchant Center product review).",
+  "type": "string",
   "enum": [
     "approved",
     "pending",
@@ -12,7 +14,5 @@
     "pending": "Item is awaiting platform review. Items enter this state on initial sync and when re-synced after rejection.",
     "rejected": "Item failed platform review (missing fields, policy violation, invalid data). Not terminal \u2014 fix the issue in the catalog and re-sync to reset the item to pending.",
     "warning": "Item is approved and serving but has issues worth fixing (e.g., low-quality image, missing optional fields). The item remains eligible for delivery."
-  },
-  "title": "Catalog Item Status",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/catalog-type.json b/schemas/cache/enums/catalog-type.json
index 7811984fa..4336844ff 100644
--- a/schemas/cache/enums/catalog-type.json
+++ b/schemas/cache/enums/catalog-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Catalog Type",
   "description": "The type of catalog feed. Determines the item schema and how the platform resolves catalog items. Multiple catalog types can be synced to the same account and referenced together in creatives.",
+  "type": "string",
   "enum": [
     "offering",
     "product",
@@ -15,7 +17,5 @@
     "education",
     "destination",
     "app"
-  ],
-  "title": "Catalog Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/channels.json b/schemas/cache/enums/channels.json
index 307dfb06a..d407c5a54 100644
--- a/schemas/cache/enums/channels.json
+++ b/schemas/cache/enums/channels.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Media Channel",
   "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
+  "type": "string",
   "enum": [
     "display",
     "olv",
@@ -24,27 +26,25 @@
     "sponsored_intelligence"
   ],
   "enumDescriptions": {
-    "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
-    "cinema": "Movie theater advertising",
-    "ctv": "Connected TV and streaming on television screens",
     "display": "Digital display advertising (banners, native, rich media) across web and app",
+    "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
+    "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
+    "search": "Search engine advertising and search networks",
+    "ctv": "Connected TV and streaming on television screens",
+    "linear_tv": "Traditional broadcast and cable television",
+    "radio": "Traditional AM/FM radio broadcast",
+    "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)",
+    "podcast": "Podcast advertising (host-read or dynamically inserted)",
     "dooh": "Digital out-of-home screens in public spaces",
+    "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
+    "print": "Newspapers, magazines, and other print publications",
+    "cinema": "Movie theater advertising",
     "email": "Email advertising and sponsored newsletter content",
     "gaming": "In-game advertising across platforms",
+    "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
     "influencer": "Creator and influencer marketing partnerships",
-    "linear_tv": "Traditional broadcast and cable television",
-    "olv": "Online video advertising outside CTV (pre-roll, outstream, in-app video)",
-    "ooh": "Classic out-of-home (physical billboards, transit, etc.)",
-    "podcast": "Podcast advertising (host-read or dynamically inserted)",
-    "print": "Newspapers, magazines, and other print publications",
+    "affiliate": "Affiliate networks, comparison sites, and performance-based partnerships",
     "product_placement": "Product placement, branded content, and sponsorship integrations",
-    "radio": "Traditional AM/FM radio broadcast",
-    "retail_media": "Retail media networks and commerce marketplaces (Amazon, Walmart, Instacart)",
-    "search": "Search engine advertising and search networks",
-    "social": "Social media platforms (Facebook, Instagram, TikTok, LinkedIn, etc.)",
-    "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow",
-    "streaming_audio": "Digital audio streaming services (Spotify, Pandora, etc.)"
-  },
-  "title": "Media Channel",
-  "type": "string"
+    "sponsored_intelligence": "Sponsored Intelligence \u2014 advertising within AI assistants, AI search, and generative AI experiences via the reversed data flow"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/cloud-storage-protocol.json b/schemas/cache/enums/cloud-storage-protocol.json
new file mode 100644
index 000000000..eeb004444
--- /dev/null
+++ b/schemas/cache/enums/cloud-storage-protocol.json
@@ -0,0 +1,11 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Cloud Storage Protocol",
+  "description": "Cloud storage protocols supported for offline file delivery",
+  "type": "string",
+  "enum": [
+    "s3",
+    "gcs",
+    "azure_blob"
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/co-branding-requirement.json b/schemas/cache/enums/co-branding-requirement.json
index 99734f360..a0e464a2b 100644
--- a/schemas/cache/enums/co-branding-requirement.json
+++ b/schemas/cache/enums/co-branding-requirement.json
@@ -1,11 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Co-Branding Requirement",
   "description": "Co-branding policy for creatives (retailer/publisher brand inclusion)",
+  "type": "string",
   "enum": [
     "required",
     "optional",
     "none"
-  ],
-  "title": "Co-Branding Requirement",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/consent-basis.json b/schemas/cache/enums/consent-basis.json
index 158cb68da..0b4ad097f 100644
--- a/schemas/cache/enums/consent-basis.json
+++ b/schemas/cache/enums/consent-basis.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Consent Basis",
   "description": "Common GDPR lawful bases relevant to advertising. Covers the Article 6(1) bases used in programmatic advertising contexts.",
+  "type": "string",
   "enum": [
     "consent",
     "legitimate_interest",
     "contract",
     "legal_obligation"
-  ],
-  "title": "Consent Basis",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/content-id-type.json b/schemas/cache/enums/content-id-type.json
index be230131b..38aeda3bc 100644
--- a/schemas/cache/enums/content-id-type.json
+++ b/schemas/cache/enums/content-id-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Content ID Type",
   "description": "Identifier type used in content_ids on conversion events to match back to catalog items. Omit when the identifier type is custom or not listed here.",
+  "type": "string",
   "enum": [
     "sku",
     "gtin",
@@ -14,7 +16,5 @@
     "program_id",
     "destination_id",
     "app_id"
-  ],
-  "title": "Content ID Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-action.json b/schemas/cache/enums/creative-action.json
index 35d37cae9..11bc799e0 100644
--- a/schemas/cache/enums/creative-action.json
+++ b/schemas/cache/enums/creative-action.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Action",
   "description": "Action taken on a creative during sync operation",
+  "type": "string",
   "enum": [
     "created",
     "updated",
     "unchanged",
     "failed",
     "deleted"
-  ],
-  "title": "Creative Action",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-agent-capability.json b/schemas/cache/enums/creative-agent-capability.json
index 1e9246ea7..55db0cf8a 100644
--- a/schemas/cache/enums/creative-agent-capability.json
+++ b/schemas/cache/enums/creative-agent-capability.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Agent Capability",
   "description": "Capabilities supported by creative agents for format handling",
+  "type": "string",
   "enum": [
     "validation",
     "assembly",
     "generation",
     "preview",
     "delivery"
-  ],
-  "title": "Creative Agent Capability",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-approval-status.json b/schemas/cache/enums/creative-approval-status.json
index 47a029c09..4fd3db0c2 100644
--- a/schemas/cache/enums/creative-approval-status.json
+++ b/schemas/cache/enums/creative-approval-status.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Approval Status",
   "description": "Approval state of a creative on a specific package",
+  "type": "string",
   "enum": [
     "pending_review",
     "approved",
     "rejected"
   ],
   "enumDescriptions": {
-    "approved": "Creative has been approved and is eligible for delivery",
     "pending_review": "Creative has been submitted and is awaiting platform review",
+    "approved": "Creative has been approved and is eligible for delivery",
     "rejected": "Creative was rejected by the platform, including change requests; see rejection_reason for required fixes and re-upload via sync_creatives"
-  },
-  "title": "Creative Approval Status",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-identifier-type.json b/schemas/cache/enums/creative-identifier-type.json
new file mode 100644
index 000000000..bb3f1d8be
--- /dev/null
+++ b/schemas/cache/enums/creative-identifier-type.json
@@ -0,0 +1,21 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Identifier Type",
+  "description": "Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.",
+  "type": "string",
+  "enum": [
+    "ad_id",
+    "isci",
+    "clearcast_clock"
+  ],
+  "enumDescriptions": {
+    "ad_id": "Ad-ID registry code \u2014 the universal standard for identifying advertising assets in the US and increasingly worldwide. 12-character alphanumeric (4-character company prefix + 8-character unique identifier, e.g., ABCD1234000H). Managed by the Ad-ID registry (ad-id.org). Ties creative assets to rotation instructions in broadcast buying.",
+    "isci": "Industry Standard Coding Identification \u2014 legacy creative identifier that preceded Ad-ID. Some older inventory and traffic systems still reference ISCI codes.",
+    "clearcast_clock": "Clearcast clock number \u2014 UK broadcast creative identifier assigned during the Clearcast clearance process. Required for linear TV and VOD advertising in the UK."
+  },
+  "examples": [
+    "ad_id",
+    "isci",
+    "clearcast_clock"
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-quality.json b/schemas/cache/enums/creative-quality.json
index 6db4279e7..f4664f11c 100644
--- a/schemas/cache/enums/creative-quality.json
+++ b/schemas/cache/enums/creative-quality.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Quality",
   "description": "Quality tier for creative generation, controlling the fidelity and cost tradeoff",
+  "type": "string",
   "enum": [
     "draft",
     "production"
@@ -8,7 +10,5 @@
   "enumDescriptions": {
     "draft": "Fast, lower-fidelity output for iteration and review",
     "production": "Full-quality output for final delivery"
-  },
-  "title": "Creative Quality",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-sort-field.json b/schemas/cache/enums/creative-sort-field.json
index 2b45516ee..8a8794736 100644
--- a/schemas/cache/enums/creative-sort-field.json
+++ b/schemas/cache/enums/creative-sort-field.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Sort Field",
   "description": "Fields available for sorting creative library listings",
+  "type": "string",
   "enum": [
     "created_date",
     "updated_date",
     "name",
     "status",
     "assignment_count"
-  ],
-  "title": "Creative Sort Field",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-status.json b/schemas/cache/enums/creative-status.json
index b739356f2..345f776b2 100644
--- a/schemas/cache/enums/creative-status.json
+++ b/schemas/cache/enums/creative-status.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Creative Status",
   "description": "Lifecycle status of a creative asset in a creative library. See the Creative Protocol specification for transition rules.",
+  "type": "string",
   "enum": [
     "processing",
     "pending_review",
@@ -9,12 +11,10 @@
     "archived"
   ],
   "enumDescriptions": {
-    "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
-    "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved.",
-    "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
     "processing": "Creative is being ingested, transcoded, or validated. Automatically transitions to pending_review when processing completes, or to rejected if processing fails (e.g., corrupt file, unsupported codec).",
-    "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing."
-  },
-  "title": "Creative Status",
-  "type": "string"
+    "pending_review": "Creative has passed processing and is awaiting platform content policy review. Transitions to approved or rejected after review.",
+    "approved": "Creative has been approved and is eligible for delivery. May be archived by the buyer or re-reviewed by the seller.",
+    "rejected": "Creative was rejected due to content policy or technical issues. Not terminal \u2014 the buyer may fix the issue and resubmit via sync_creatives, which returns the creative to processing.",
+    "archived": "Creative has been archived by the buyer and is excluded from default queries. Archived creatives retain their data and may be unarchived back to approved."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/daast-tracking-event.json b/schemas/cache/enums/daast-tracking-event.json
index 0edd36128..34a84a8df 100644
--- a/schemas/cache/enums/daast-tracking-event.json
+++ b/schemas/cache/enums/daast-tracking-event.json
@@ -1,19 +1,31 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "description": "Standard DAAST tracking events for audio ad playback and interaction",
+  "title": "DAAST Tracking Event",
+  "description": "Tracking events for audio ads. Includes DAAST-applicable events from IAB VAST/DAAST conventions, plus flattened Impression, Error, and ViewableImpression elements. creativeView included for companion ad tracking. measurableImpression is an AdCP extension.",
+  "type": "string",
   "enum": [
+    "impression",
+    "creativeView",
+    "loaded",
     "start",
     "firstQuartile",
     "midpoint",
     "thirdQuartile",
     "complete",
-    "impression",
+    "mute",
+    "unmute",
     "pause",
     "resume",
     "skip",
-    "mute",
-    "unmute"
-  ],
-  "title": "DAAST Tracking Event",
-  "type": "string"
+    "progress",
+    "clickTracking",
+    "customClick",
+    "close",
+    "error",
+    "viewable",
+    "notViewable",
+    "viewUndetermined",
+    "measurableImpression",
+    "viewableImpression"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/daast-version.json b/schemas/cache/enums/daast-version.json
index 7d9a0afbb..cc01e2547 100644
--- a/schemas/cache/enums/daast-version.json
+++ b/schemas/cache/enums/daast-version.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "DAAST Version",
   "description": "Supported DAAST (Digital Audio Ad Serving Template) specification versions",
+  "type": "string",
   "enum": [
     "1.0",
     "1.1"
-  ],
-  "title": "DAAST Version",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/day-of-week.json b/schemas/cache/enums/day-of-week.json
index 63ae66fd1..81199d414 100644
--- a/schemas/cache/enums/day-of-week.json
+++ b/schemas/cache/enums/day-of-week.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Day of Week",
   "description": "Days of the week for daypart targeting",
+  "type": "string",
   "enum": [
     "monday",
     "tuesday",
@@ -9,7 +11,5 @@
     "friday",
     "saturday",
     "sunday"
-  ],
-  "title": "Day of Week",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/delegation-authority.json b/schemas/cache/enums/delegation-authority.json
index 4154304e3..2708d5b15 100644
--- a/schemas/cache/enums/delegation-authority.json
+++ b/schemas/cache/enums/delegation-authority.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Delegation Authority",
   "description": "Authority level granted to a delegated agent operating against a campaign plan.",
+  "type": "string",
   "enum": [
     "full",
     "execute_only",
     "propose_only"
   ],
   "enumDescriptions": {
-    "execute_only": "Can execute pre-approved actions but cannot initiate new campaigns or reallocate budget.",
     "full": "Can execute any action within the delegation's budget and market constraints.",
+    "execute_only": "Can execute pre-approved actions but cannot initiate new campaigns or reallocate budget.",
     "propose_only": "Can propose actions for governance review but cannot execute without explicit approval."
-  },
-  "title": "Delegation Authority",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/delivery-type.json b/schemas/cache/enums/delivery-type.json
index dd814099b..358190d90 100644
--- a/schemas/cache/enums/delivery-type.json
+++ b/schemas/cache/enums/delivery-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Delivery Type",
   "description": "Type of inventory delivery",
+  "type": "string",
   "enum": [
     "guaranteed",
     "non_guaranteed"
@@ -8,7 +10,5 @@
   "enumDescriptions": {
     "guaranteed": "Reserved inventory with guaranteed delivery",
     "non_guaranteed": "Auction-based inventory without delivery guarantees"
-  },
-  "title": "Delivery Type",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/demographic-system.json b/schemas/cache/enums/demographic-system.json
index d59bc379d..dd3cf248a 100644
--- a/schemas/cache/enums/demographic-system.json
+++ b/schemas/cache/enums/demographic-system.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Demographic System",
   "description": "Audience measurement systems for demographic notation in GRP forecasts and pricing",
+  "type": "string",
   "enum": [
     "nielsen",
     "barb",
@@ -10,13 +12,11 @@
     "custom"
   ],
   "enumDescriptions": {
-    "agf": "AGF Videoforschung (Germany). Erwachsene notation + age bands. Examples: E 14-49, E 14+",
+    "nielsen": "Nielsen notation. Prefix: P(ersons), M(en), W(omen), A(dults), C(hildren), T(eens) + age range. Examples: P18-49, M25-54, W35+",
     "barb": "BARB (UK). NRS social grade + age bands. Examples: ABC1 Adults, 16-34, Adults",
-    "custom": "Publisher-defined demographic notation",
+    "agf": "AGF Videoforschung (Germany). Erwachsene notation + age bands. Examples: E 14-49, E 14+",
+    "oztam": "OzTAM (Australia). Age/gender bands, 4+ measurement universe",
     "mediametrie": "Mediametrie (France). Named segments + age bands",
-    "nielsen": "Nielsen notation. Prefix: P(ersons), M(en), W(omen), A(dults), C(hildren), T(eens) + age range. Examples: P18-49, M25-54, W35+",
-    "oztam": "OzTAM (Australia). Age/gender bands, 4+ measurement universe"
-  },
-  "title": "Demographic System",
-  "type": "string"
+    "custom": "Publisher-defined demographic notation"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/device-platform.json b/schemas/cache/enums/device-platform.json
index c94ec658b..e574c44e8 100644
--- a/schemas/cache/enums/device-platform.json
+++ b/schemas/cache/enums/device-platform.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Device Platform",
   "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
+  "type": "string",
   "enum": [
     "ios",
     "android",
@@ -14,7 +16,5 @@
     "fire_os",
     "roku_os",
     "unknown"
-  ],
-  "title": "Device Platform",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/device-type.json b/schemas/cache/enums/device-type.json
index 659d91b44..07cea3864 100644
--- a/schemas/cache/enums/device-type.json
+++ b/schemas/cache/enums/device-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Device Type",
   "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
+  "type": "string",
   "enum": [
     "desktop",
     "mobile",
@@ -8,7 +10,5 @@
     "ctv",
     "dooh",
     "unknown"
-  ],
-  "title": "Device Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/digital-source-type.json b/schemas/cache/enums/digital-source-type.json
index b0ce3a7e9..4dc8a3492 100644
--- a/schemas/cache/enums/digital-source-type.json
+++ b/schemas/cache/enums/digital-source-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Digital Source Type",
   "description": "Classification of AI involvement in content creation, aligned with IPTC digitalsourcetype vocabulary. Used in provenance metadata to declare how a creative asset, artifact, or individual asset was produced.",
+  "type": "string",
   "enum": [
     "digital_capture",
     "digital_creation",
@@ -13,16 +15,14 @@
     "data_driven_media"
   ],
   "enumDescriptions": {
+    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
+    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
+    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)",
+    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
     "algorithmic_media": "Produced by deterministic algorithms without machine learning (procedural generation, rule-based systems)",
     "composite_capture": "Multiple digital captures composited together without AI",
     "composite_synthetic": "Composite of multiple elements where at least one is AI-generated (e.g., stock photo composited with AI-generated background)",
-    "composite_with_trained_algorithmic_media": "Human-created content combined with AI-generated elements (e.g., photo with AI background)",
-    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)",
-    "digital_capture": "Captured by a digital device (camera, scanner, screen recording) with no AI involvement",
-    "digital_creation": "Created by a human using digital tools (Photoshop, Illustrator, After Effects) without AI generation",
     "human_edits": "Content augmented, corrected, or enhanced by humans using non-generative tools",
-    "trained_algorithmic_media": "Generated entirely by a trained AI model (DALL-E, Midjourney, Stable Diffusion, Sora)"
-  },
-  "title": "Digital Source Type",
-  "type": "string"
+    "data_driven_media": "Assembled from structured data feeds (DCO templates, product catalogs, weather-triggered variants)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/dimension-unit.json b/schemas/cache/enums/dimension-unit.json
index 6f04841bb..ba66de65e 100644
--- a/schemas/cache/enums/dimension-unit.json
+++ b/schemas/cache/enums/dimension-unit.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Dimension Unit",
   "description": "Units of measurement for creative format dimensions",
+  "type": "string",
   "enum": [
     "px",
     "dp",
@@ -8,7 +10,5 @@
     "cm",
     "mm",
     "pt"
-  ],
-  "title": "Dimension Unit",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/disclosure-persistence.json b/schemas/cache/enums/disclosure-persistence.json
index c7497d966..9431b2dd0 100644
--- a/schemas/cache/enums/disclosure-persistence.json
+++ b/schemas/cache/enums/disclosure-persistence.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Disclosure Persistence",
   "description": "How long a disclosure must persist during content playback or display. Different jurisdictions and regulations require different persistence behaviors for AI-generated content labels. When multiple sources specify persistence for the same jurisdiction (e.g., brief and provenance), the most restrictive mode applies: continuous > initial > flexible.",
+  "type": "string",
   "enum": [
     "continuous",
     "initial",
@@ -8,9 +10,7 @@
   ],
   "enumDescriptions": {
     "continuous": "Disclosure must remain visible or audible throughout the entire content display duration. For video and audio, this means the full playback duration. For static formats (display, DOOH), this means the full display slot. For DOOH specifically, 'content duration' means the ad's display slot within the rotation, not the screen's full rotation cycle.",
-    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion",
-    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration."
-  },
-  "title": "Disclosure Persistence",
-  "type": "string"
+    "initial": "Disclosure must appear at the start of content for a minimum duration before it may be removed. Pair with min_duration_ms in render_guidance or creative brief to specify the required duration.",
+    "flexible": "Disclosure presence is sufficient; placement timing and duration are at the publisher's discretion"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/disclosure-position.json b/schemas/cache/enums/disclosure-position.json
index 60517955d..078ebcaab 100644
--- a/schemas/cache/enums/disclosure-position.json
+++ b/schemas/cache/enums/disclosure-position.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Disclosure Position",
   "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
+  "type": "string",
   "enum": [
     "prominent",
     "footer",
@@ -10,7 +12,5 @@
     "end_card",
     "pre_roll",
     "companion"
-  ],
-  "title": "Disclosure Position",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/distance-unit.json b/schemas/cache/enums/distance-unit.json
index 7153ba897..67c20ce04 100644
--- a/schemas/cache/enums/distance-unit.json
+++ b/schemas/cache/enums/distance-unit.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Distance Unit",
   "description": "Units of distance measurement for radius-based catchment areas.",
+  "type": "string",
   "enum": [
     "km",
     "mi",
@@ -8,9 +10,7 @@
   ],
   "enumDescriptions": {
     "km": "Kilometers",
-    "m": "Meters",
-    "mi": "Miles"
-  },
-  "title": "Distance Unit",
-  "type": "string"
+    "mi": "Miles",
+    "m": "Meters"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/distribution-identifier-type.json b/schemas/cache/enums/distribution-identifier-type.json
index 61e6de548..dc0775d5d 100644
--- a/schemas/cache/enums/distribution-identifier-type.json
+++ b/schemas/cache/enums/distribution-identifier-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Distribution Identifier Type",
   "description": "Platform-specific identifier types for collection distribution. Maps a collection to its presence on specific platforms, enabling cross-seller matching.",
+  "type": "string",
   "enum": [
     "apple_podcast_id",
     "spotify_collection_id",
@@ -25,28 +27,26 @@
     "substack_id"
   ],
   "enumDescriptions": {
-    "amazon_music_id": "Amazon Music / Audible ID",
-    "amazon_title_id": "Amazon Prime Video title ID",
     "apple_podcast_id": "Apple Podcasts collection ID",
-    "domain": "Show's own website domain",
-    "eidr_id": "EIDR (Entertainment Identifier Registry) \u2014 ISO 10528 for audiovisual content",
-    "gracenote_id": "Gracenote TMS ID \u2014 industry standard for TV metadata",
-    "iheart_id": "iHeartRadio collection ID",
-    "imdb_id": "IMDb title ID \u2014 platform-independent cross-reference",
-    "peacock_id": "Peacock content ID",
-    "pluto_channel_id": "Pluto TV channel ID",
+    "spotify_collection_id": "Spotify collection URI",
+    "rss_url": "Canonical RSS feed URL",
     "podcast_guid": "Podcasting 2.0 GUID",
+    "amazon_music_id": "Amazon Music / Audible ID",
+    "iheart_id": "iHeartRadio collection ID",
     "podcast_index_id": "PodcastIndex.org ID",
+    "youtube_channel_id": "YouTube channel ID",
+    "youtube_playlist_id": "YouTube playlist ID (for series within a channel)",
+    "amazon_title_id": "Amazon Prime Video title ID",
     "roku_channel_id": "Roku Channel ID",
-    "rss_url": "Canonical RSS feed URL",
-    "spotify_collection_id": "Spotify collection URI",
-    "substack_id": "Substack publication identifier",
-    "tiktok_id": "TikTok account ID",
+    "pluto_channel_id": "Pluto TV channel ID",
     "tubi_id": "Tubi content ID",
+    "peacock_id": "Peacock content ID",
+    "tiktok_id": "TikTok account ID",
     "twitch_channel": "Twitch channel name",
-    "youtube_channel_id": "YouTube channel ID",
-    "youtube_playlist_id": "YouTube playlist ID (for series within a channel)"
-  },
-  "title": "Distribution Identifier Type",
-  "type": "string"
+    "imdb_id": "IMDb title ID \u2014 platform-independent cross-reference",
+    "gracenote_id": "Gracenote TMS ID \u2014 industry standard for TV metadata",
+    "eidr_id": "EIDR (Entertainment Identifier Registry) \u2014 ISO 10528 for audiovisual content",
+    "domain": "Show's own website domain",
+    "substack_id": "Substack publication identifier"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/error-code.json b/schemas/cache/enums/error-code.json
index 1ac88ffd1..4232ea3f2 100644
--- a/schemas/cache/enums/error-code.json
+++ b/schemas/cache/enums/error-code.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Error Code",
   "description": "Standard error code vocabulary for AdCP. Codes are machine-readable so agents can apply autonomous recovery strategies based on the recovery classification. Sellers MAY return codes not listed here for platform-specific errors \u2014 the error.json code field accepts any string. Agents MUST handle unknown codes by falling back to the recovery classification.",
+  "type": "string",
   "enum": [
     "INVALID_REQUEST",
     "AUTH_REQUIRED",
@@ -20,9 +22,12 @@
     "ACCOUNT_PAYMENT_REQUIRED",
     "ACCOUNT_SUSPENDED",
     "COMPLIANCE_UNSATISFIED",
+    "GOVERNANCE_DENIED",
     "BUDGET_EXHAUSTED",
     "BUDGET_EXCEEDED",
     "CONFLICT",
+    "IDEMPOTENCY_CONFLICT",
+    "IDEMPOTENCY_EXPIRED",
     "CREATIVE_DEADLINE_EXCEEDED",
     "INVALID_STATE",
     "MEDIA_BUY_NOT_FOUND",
@@ -33,42 +38,47 @@
     "VALIDATION_ERROR",
     "PRODUCT_EXPIRED",
     "PROPOSAL_NOT_COMMITTED",
-    "IO_REQUIRED"
+    "IO_REQUIRED",
+    "TERMS_REJECTED",
+    "VERSION_UNSUPPORTED"
   ],
   "enumDescriptions": {
-    "ACCOUNT_AMBIGUOUS": "Natural key resolves to multiple accounts. Recovery: correctable (pass explicit account_id or a more specific natural key).",
+    "INVALID_REQUEST": "Request is malformed, missing required fields, or violates schema constraints. Recovery: correctable (check request parameters and fix).",
+    "AUTH_REQUIRED": "Authentication is required to access this resource. Recovery: correctable (provide credentials via auth header).",
+    "RATE_LIMITED": "Request rate exceeded. Retry after the retry_after interval. Recovery: transient.",
+    "SERVICE_UNAVAILABLE": "Seller service is temporarily unavailable. Retry with exponential backoff. Recovery: transient.",
+    "POLICY_VIOLATION": "Request violates the seller's content or advertising policies. Recovery: correctable (review policy requirements in the error details).",
+    "PRODUCT_NOT_FOUND": "One or more referenced product IDs are unknown or expired. Recovery: correctable (remove invalid IDs and retry, or re-discover with get_products).",
+    "PRODUCT_UNAVAILABLE": "The requested product is sold out or no longer available. Recovery: correctable (choose a different product).",
+    "PROPOSAL_EXPIRED": "A referenced proposal ID has passed its expires_at timestamp. Recovery: correctable (re-discover with get_products to get a fresh proposal).",
+    "BUDGET_TOO_LOW": "Budget is below the seller's minimum. Recovery: correctable (increase budget or check capabilities.media_buy.limits).",
+    "CREATIVE_REJECTED": "Creative failed content policy review. For deadline violations, see CREATIVE_DEADLINE_EXCEEDED. Recovery: correctable (revise the creative per the seller's advertising_policies).",
+    "UNSUPPORTED_FEATURE": "A requested feature or field is not supported by this seller. Recovery: correctable (check get_adcp_capabilities and remove unsupported fields).",
+    "AUDIENCE_TOO_SMALL": "Audience segment is below the minimum required size for targeting. Recovery: correctable (broaden targeting or upload more audience members).",
     "ACCOUNT_NOT_FOUND": "The account reference could not be resolved. Recovery: terminal (verify account via list_accounts or contact seller).",
-    "ACCOUNT_PAYMENT_REQUIRED": "Account has an outstanding balance requiring payment before new buys. Recovery: terminal (buyer must resolve billing).",
     "ACCOUNT_SETUP_REQUIRED": "Natural key resolved but the account needs setup before use. Recovery: correctable (check details.setup for URL or instructions).",
+    "ACCOUNT_AMBIGUOUS": "Natural key resolves to multiple accounts. Recovery: correctable (pass explicit account_id or a more specific natural key).",
+    "ACCOUNT_PAYMENT_REQUIRED": "Account has an outstanding balance requiring payment before new buys. Recovery: terminal (buyer must resolve billing).",
     "ACCOUNT_SUSPENDED": "Account has been suspended. Recovery: terminal (contact seller to resolve suspension).",
-    "AUDIENCE_TOO_SMALL": "Audience segment is below the minimum required size for targeting. Recovery: correctable (broaden targeting or upload more audience members).",
-    "AUTH_REQUIRED": "Authentication is required to access this resource. Recovery: correctable (provide credentials via auth header).",
-    "BUDGET_EXCEEDED": "Operation would exceed the allocated budget for the media buy or package. Distinct from BUDGET_EXHAUSTED (already spent) and BUDGET_TOO_LOW (below minimum). Recovery: correctable (reduce requested amount or increase budget allocation).",
-    "BUDGET_EXHAUSTED": "Account or campaign budget has been fully spent. Distinct from BUDGET_TOO_LOW (rejected at submission). Recovery: terminal (buyer must add funds or increase budget cap).",
-    "BUDGET_TOO_LOW": "Budget is below the seller's minimum. Recovery: correctable (increase budget or check capabilities.media_buy.limits).",
     "COMPLIANCE_UNSATISFIED": "A required disclosure from the brief's compliance section cannot be satisfied by the target format \u2014 either the required position or the required persistence mode is not in the format's disclosure_capabilities. Recovery: correctable (choose a format that supports the required disclosure positions and persistence modes, or remove the disclosure requirement).",
-    "CONFLICT": "Concurrent modification detected. The resource was modified by another request between read and write. Recovery: transient (re-read the resource and retry with current state).",
+    "GOVERNANCE_DENIED": "A registered governance agent denied the transaction. The buyer may restructure the buy (e.g., reduce budget, split into smaller transactions), escalate to human spending authority, or contact the governance agent for details. Recovery: correctable.",
+    "BUDGET_EXHAUSTED": "Account or campaign budget has been fully spent. Distinct from BUDGET_TOO_LOW (rejected at submission). Recovery: terminal (buyer must add funds or increase budget cap).",
+    "BUDGET_EXCEEDED": "Operation would exceed the allocated budget for the media buy or package. Distinct from BUDGET_EXHAUSTED (already spent) and BUDGET_TOO_LOW (below minimum). Recovery: correctable (reduce requested amount or increase budget allocation).",
     "CREATIVE_DEADLINE_EXCEEDED": "Creative change submitted after the package's creative_deadline. Distinct from CREATIVE_REJECTED (content policy failure). Recovery: correctable (check creative_deadline via get_media_buys before submitting changes, or negotiate a deadline extension with the seller).",
-    "CREATIVE_REJECTED": "Creative failed content policy review. For deadline violations, see CREATIVE_DEADLINE_EXCEEDED. Recovery: correctable (revise the creative per the seller's advertising_policies).",
-    "INVALID_REQUEST": "Request is malformed, missing required fields, or violates schema constraints. Recovery: correctable (check request parameters and fix).",
+    "CONFLICT": "Concurrent modification detected. The resource was modified by another request between read and write. Recovery: transient (re-read the resource and retry with current state).",
+    "IDEMPOTENCY_CONFLICT": "An earlier request with the same idempotency_key was processed with a different canonical payload within the seller's replay window. Distinct from CONFLICT (concurrent write) \u2014 this indicates the client reused a key across semantically different requests. Recovery: correctable (use a fresh UUID v4 for the new request, or resend the exact original payload to get the cached response).",
+    "IDEMPOTENCY_EXPIRED": "The idempotency_key was seen previously but its cached response has been evicted because it is past the seller's declared replay_ttl_seconds. Distinct from IDEMPOTENCY_CONFLICT (different payload within window) \u2014 this indicates the retry arrived too late for at-most-once guarantees. Recovery: correctable (perform a natural-key check \u2014 e.g., get_media_buys by context.internal_campaign_id \u2014 to determine whether the original request succeeded, then either accept that result or generate a fresh idempotency_key for a new attempt). If the buyer has any evidence the prior call succeeded (partial response received before crash, entry in the buyer's own DB, a webhook fired), the buyer MUST do the natural-key check BEFORE minting a new key \u2014 minting a new key in that situation is exactly how double-creation happens.",
     "INVALID_STATE": "Operation is not permitted for the resource's current status (e.g., updating a completed or canceled media buy, or modifying a canceled package). Recovery: correctable (check current status via get_media_buys and adjust request).",
-    "IO_REQUIRED": "The committed proposal requires a signed insertion order but no io_acceptance was provided. Recovery: correctable (review the proposal's insertion_order, accept terms, and include io_acceptance on create_media_buy).",
     "MEDIA_BUY_NOT_FOUND": "Referenced media buy does not exist or is not accessible to the requesting agent. Recovery: correctable (verify media_buy_id or buyer_ref).",
     "NOT_CANCELLABLE": "The media buy or package cannot be canceled in its current state. The seller may have contractual or operational constraints that prevent cancellation. Recovery: correctable (check the seller's cancellation policy or contact the seller).",
     "PACKAGE_NOT_FOUND": "Referenced package does not exist within the specified media buy. Recovery: correctable (verify package_id or buyer_ref via get_media_buys).",
-    "POLICY_VIOLATION": "Request violates the seller's content or advertising policies. Recovery: correctable (review policy requirements in the error details).",
-    "PRODUCT_EXPIRED": "One or more referenced products have passed their expires_at timestamp and are no longer available for purchase. Recovery: correctable (re-discover with get_products to find current inventory).",
-    "PRODUCT_NOT_FOUND": "One or more referenced product IDs are unknown or expired. Recovery: correctable (remove invalid IDs and retry, or re-discover with get_products).",
-    "PRODUCT_UNAVAILABLE": "The requested product is sold out or no longer available. Recovery: correctable (choose a different product).",
-    "PROPOSAL_EXPIRED": "A referenced proposal ID has passed its expires_at timestamp. Recovery: correctable (re-discover with get_products to get a fresh proposal).",
-    "PROPOSAL_NOT_COMMITTED": "The referenced proposal has proposal_status 'draft' and cannot be used to create a media buy. Recovery: correctable (finalize the proposal first using get_products with buying_mode 'refine' and action 'finalize').",
-    "RATE_LIMITED": "Request rate exceeded. Retry after the retry_after interval. Recovery: transient.",
-    "SERVICE_UNAVAILABLE": "Seller service is temporarily unavailable. Retry with exponential backoff. Recovery: transient.",
     "SESSION_NOT_FOUND": "SI session ID is invalid, expired, or does not exist. Recovery: correctable (initiate a new session via si_initiate_session).",
     "SESSION_TERMINATED": "SI session has already been terminated and cannot accept further messages. Recovery: correctable (initiate a new session via si_initiate_session).",
-    "UNSUPPORTED_FEATURE": "A requested feature or field is not supported by this seller. Recovery: correctable (check get_adcp_capabilities and remove unsupported fields).",
-    "VALIDATION_ERROR": "Request contains invalid field values or violates business rules beyond schema validation. Recovery: correctable (review error details and fix field values)."
-  },
-  "title": "Error Code",
-  "type": "string"
+    "VALIDATION_ERROR": "Request contains invalid field values or violates business rules beyond schema validation. Recovery: correctable (review error details and fix field values).",
+    "PRODUCT_EXPIRED": "One or more referenced products have passed their expires_at timestamp and are no longer available for purchase. Recovery: correctable (re-discover with get_products to find current inventory).",
+    "PROPOSAL_NOT_COMMITTED": "The referenced proposal has proposal_status 'draft' and cannot be used to create a media buy. Recovery: correctable (finalize the proposal first using get_products with buying_mode 'refine' and action 'finalize').",
+    "IO_REQUIRED": "The committed proposal requires a signed insertion order but no io_acceptance was provided. Recovery: correctable (review the proposal's insertion_order, accept terms, and include io_acceptance on create_media_buy).",
+    "TERMS_REJECTED": "Buyer-proposed measurement_terms were rejected by the seller. The error details SHOULD identify which specific term was rejected and the seller's acceptable range or supported vendors. Recovery: correctable (adjust the proposed terms and retry, or omit measurement_terms to accept the product's defaults).",
+    "VERSION_UNSUPPORTED": "The declared adcp_major_version is not supported by this seller. Recovery: correctable (call get_adcp_capabilities without adcp_major_version to discover supported major_versions, then retry with a supported version)."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/escalation-severity.json b/schemas/cache/enums/escalation-severity.json
index c82149ffd..931625722 100644
--- a/schemas/cache/enums/escalation-severity.json
+++ b/schemas/cache/enums/escalation-severity.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Escalation Severity",
   "description": "The severity level of a governance escalation.",
+  "type": "string",
   "enum": [
     "info",
     "warning",
     "critical"
   ],
   "enumDescriptions": {
-    "critical": "Agent must not proceed until human approves.",
     "info": "Logged for audit. No action required.",
-    "warning": "Agent may proceed but human should review within a deadline."
-  },
-  "title": "Escalation Severity",
-  "type": "string"
+    "warning": "Agent may proceed but human should review within a deadline.",
+    "critical": "Agent must not proceed until human approves."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/event-type.json b/schemas/cache/enums/event-type.json
index 02c05d302..54eb42cbd 100644
--- a/schemas/cache/enums/event-type.json
+++ b/schemas/cache/enums/event-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Event Type",
   "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
+  "type": "string",
   "enum": [
     "page_view",
     "view_content",
@@ -32,35 +34,33 @@
     "custom"
   ],
   "enumDescriptions": {
-    "add_payment_info": "User added payment information",
+    "page_view": "User viewed a page",
+    "view_content": "User viewed specific content (product, article, etc.)",
+    "select_content": "User selected or clicked on content (article, video, etc.)",
+    "select_item": "User selected a specific product or item from a list",
+    "search": "User performed a search",
+    "share": "User shared content via social or messaging",
     "add_to_cart": "User added an item to cart",
+    "remove_from_cart": "User removed an item from cart",
+    "viewed_cart": "User viewed their shopping cart",
     "add_to_wishlist": "User added an item to a wishlist",
-    "app_install": "User installed an application",
-    "app_launch": "User launched an application",
-    "close_convert_lead": "Lead converted to a customer or closed deal",
-    "complete_registration": "User completed account registration",
-    "contact": "User initiated contact (call, message, etc.)",
-    "custom": "Custom event type (specify in custom_event_name)",
-    "disqualify_lead": "Lead disqualified or marked as not viable",
-    "donate": "User made a donation",
     "initiate_checkout": "User started checkout process",
-    "lead": "User expressed interest (form submission, signup, etc.)",
-    "page_view": "User viewed a page",
+    "add_payment_info": "User added payment information",
     "purchase": "User completed a purchase",
-    "qualify_lead": "Lead qualified by sales or scoring criteria",
     "refund": "A purchase was fully or partially refunded (adjusts ROAS)",
-    "remove_from_cart": "User removed an item from cart",
-    "schedule": "User scheduled an appointment or event",
-    "search": "User performed a search",
-    "select_content": "User selected or clicked on content (article, video, etc.)",
-    "select_item": "User selected a specific product or item from a list",
-    "share": "User shared content via social or messaging",
+    "lead": "User expressed interest (form submission, signup, etc.)",
+    "qualify_lead": "Lead qualified by sales or scoring criteria",
+    "close_convert_lead": "Lead converted to a customer or closed deal",
+    "disqualify_lead": "Lead disqualified or marked as not viable",
+    "complete_registration": "User completed account registration",
+    "subscribe": "User subscribed to a service or newsletter",
     "start_trial": "User started a free trial",
+    "app_install": "User installed an application",
+    "app_launch": "User launched an application",
+    "contact": "User initiated contact (call, message, etc.)",
+    "schedule": "User scheduled an appointment or event",
+    "donate": "User made a donation",
     "submit_application": "User submitted an application (loan, job, etc.)",
-    "subscribe": "User subscribed to a service or newsletter",
-    "view_content": "User viewed specific content (product, article, etc.)",
-    "viewed_cart": "User viewed their shopping cart"
-  },
-  "title": "Event Type",
-  "type": "string"
+    "custom": "Custom event type (specify in custom_event_name)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/exclusivity.json b/schemas/cache/enums/exclusivity.json
index 13c90f4c3..5dbf55e08 100644
--- a/schemas/cache/enums/exclusivity.json
+++ b/schemas/cache/enums/exclusivity.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Exclusivity",
   "description": "Whether a product offers exclusive access to its inventory",
+  "type": "string",
   "enum": [
     "none",
     "category",
     "exclusive"
   ],
   "enumDescriptions": {
+    "none": "No exclusivity \u2014 multiple advertisers can buy this product simultaneously",
     "category": "Category-exclusive \u2014 only one advertiser per industry category (e.g., one auto brand per collection sponsorship)",
-    "exclusive": "Sole sponsorship \u2014 only one advertiser can buy this product",
-    "none": "No exclusivity \u2014 multiple advertisers can buy this product simultaneously"
-  },
-  "title": "Exclusivity",
-  "type": "string"
+    "exclusive": "Sole sponsorship \u2014 only one advertiser can buy this product"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/feed-format.json b/schemas/cache/enums/feed-format.json
index 401ac4ae1..968be24e9 100644
--- a/schemas/cache/enums/feed-format.json
+++ b/schemas/cache/enums/feed-format.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Feed Format",
   "description": "Catalog feed formats. Determines how the platform parses items from an external feed URL.",
+  "type": "string",
   "enum": [
     "google_merchant_center",
     "facebook_catalog",
     "shopify",
     "linkedin_jobs",
     "custom"
-  ],
-  "title": "Feed Format",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/feedback-source.json b/schemas/cache/enums/feedback-source.json
index 5fcff84c2..01c93c3e7 100644
--- a/schemas/cache/enums/feedback-source.json
+++ b/schemas/cache/enums/feedback-source.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Feedback Source",
   "description": "Source of performance feedback data",
+  "type": "string",
   "enum": [
     "buyer_attribution",
     "third_party_measurement",
     "platform_analytics",
     "verification_partner"
-  ],
-  "title": "Feedback Source",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/forecast-method.json b/schemas/cache/enums/forecast-method.json
index 534825c79..786725c56 100644
--- a/schemas/cache/enums/forecast-method.json
+++ b/schemas/cache/enums/forecast-method.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Forecast Method",
   "description": "Method used to produce a delivery forecast",
+  "type": "string",
   "enum": [
     "estimate",
     "modeled",
@@ -8,9 +10,7 @@
   ],
   "enumDescriptions": {
     "estimate": "Rough approximation based on historical averages or heuristics. No delivery commitment.",
-    "guaranteed": "Contractually committed delivery levels backed by reserved inventory",
-    "modeled": "Forecast derived from platform-specific predictive models or historical data. Publisher uses this to set expectations but does not guarantee delivery."
-  },
-  "title": "Forecast Method",
-  "type": "string"
+    "modeled": "Forecast derived from platform-specific predictive models or historical data. Publisher uses this to set expectations but does not guarantee delivery.",
+    "guaranteed": "Contractually committed delivery levels backed by reserved inventory"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/forecast-range-unit.json b/schemas/cache/enums/forecast-range-unit.json
index 8e094c01e..09d214494 100644
--- a/schemas/cache/enums/forecast-range-unit.json
+++ b/schemas/cache/enums/forecast-range-unit.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Forecast Range Unit",
   "description": "Describes how to interpret the points array in a DeliveryForecast \u2014 what axis the curve represents",
+  "type": "string",
   "enum": [
     "spend",
     "availability",
@@ -8,17 +10,17 @@
     "weekly",
     "daily",
     "clicks",
-    "conversions"
+    "conversions",
+    "package"
   ],
   "enumDescriptions": {
+    "spend": "Points at ascending budget levels. Standard budget curve showing how delivery metrics scale with spend. Default when field is omitted.",
     "availability": "Each point represents total available inventory for the requested targeting and dates. Budget is omitted \u2014 metrics express what exists, not what a given spend level buys. Use metrics.spend to express the estimated cost. Typical for guaranteed and direct-sold inventory where the forecast is an availability check.",
+    "reach_freq": "Points at ascending reach/frequency targets. Used in broadcast planning where the publisher shows how cost scales with frequency goals.",
+    "weekly": "Metrics are per-week values. Budget refers to total campaign spend. Frequency of 3.2 means 3.2 exposures per week.",
+    "daily": "Metrics are per-day values. Budget refers to total campaign spend.",
     "clicks": "Points at ascending click targets. Used in performance campaigns where the buyer specifies click goals.",
     "conversions": "Points at ascending conversion targets. Used in goal-based planning (e.g., Meta-style 'tell me your goal, I'll tell you the budget').",
-    "daily": "Metrics are per-day values. Budget refers to total campaign spend.",
-    "reach_freq": "Points at ascending reach/frequency targets. Used in broadcast planning where the publisher shows how cost scales with frequency goals.",
-    "spend": "Points at ascending budget levels. Standard budget curve showing how delivery metrics scale with spend. Default when field is omitted.",
-    "weekly": "Metrics are per-week values. Budget refers to total campaign spend. Frequency of 3.2 means 3.2 exposures per week."
-  },
-  "title": "Forecast Range Unit",
-  "type": "string"
+    "package": "Each point represents a distinct inventory package (e.g., Good/Better/Best tiers, daypart packages, sponsorships). Points are not levels on a spend curve \u2014 they are separate products with different inventory compositions. Used by broadcast TV, audio, and DOOH sellers who sell packages rather than impressions at variable spend levels."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/forecastable-metric.json b/schemas/cache/enums/forecastable-metric.json
index 79a747f2c..4fa2399ee 100644
--- a/schemas/cache/enums/forecastable-metric.json
+++ b/schemas/cache/enums/forecastable-metric.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Forecastable Metric",
   "description": "Standard delivery and engagement metric names for forecasts. For outcome/conversion forecasts (purchases, leads, app installs, etc.), use event-type enum values as metric keys instead. The ForecastPoint metrics map accepts any string key, so both forecastable-metric and event-type values can be used together.",
+  "type": "string",
   "enum": [
     "audience_size",
     "reach",
@@ -14,23 +16,27 @@
     "engagements",
     "follows",
     "saves",
-    "profile_visits"
+    "profile_visits",
+    "measured_impressions",
+    "downloads",
+    "plays"
   ],
   "enumDescriptions": {
     "audience_size": "Estimated addressable audience size",
+    "reach": "Estimated unique reach. The reach_unit field on DeliveryForecast specifies the measurement unit (individuals, households, devices, etc.).",
+    "frequency": "Estimated average frequency per individual",
+    "impressions": "Estimated ad-server or first-party delivery count. When measured_impressions is also present, impressions represents the seller's own delivery count while measured_impressions represents the third-party currency count \u2014 both may appear on the same forecast point as complementary layers.",
     "clicks": "Estimated clicks",
+    "spend": "Estimated spend in the forecast currency",
+    "views": "Estimated views at threshold (for CPV)",
     "completed_views": "Estimated video/audio completions. Threshold depends on view_duration_seconds if set on the optimization goal.",
+    "grps": "Estimated Gross Rating Points (for CPP). When present, the demographic_system and demographic fields on DeliveryForecast should specify the target demographic.",
     "engagements": "Estimated engagements (social reactions, comments, shares, story opens, overlay taps, etc.)",
     "follows": "Estimated new followers, page likes, or channel subscribes",
-    "frequency": "Estimated average frequency per individual",
-    "grps": "Estimated Gross Rating Points (for CPP). When present, the demographic_system and demographic fields on DeliveryForecast should specify the target demographic.",
-    "impressions": "Estimated impressions",
-    "profile_visits": "Estimated visits to the brand's in-platform page or profile",
-    "reach": "Estimated unique reach. The reach_unit field on DeliveryForecast specifies the measurement unit (individuals, households, devices, etc.).",
     "saves": "Estimated saves, bookmarks, playlist adds, or pins",
-    "spend": "Estimated spend in the forecast currency",
-    "views": "Estimated views at threshold (for CPV)"
-  },
-  "title": "Forecastable Metric",
-  "type": "string"
+    "profile_visits": "Estimated visits to the brand's in-platform page or profile",
+    "measured_impressions": "Impressions as counted by the third-party measurement provider specified in measurement_source on DeliveryForecast. Complementary to impressions \u2014 both may appear on the same forecast point. impressions is the ad-server delivery count; measured_impressions is the third-party currency count. Present when measurement_source is set. Use with method 'guaranteed' for contractually committed delivery, or with method 'modeled' for third-party-measured estimates without a guarantee.",
+    "downloads": "Estimated downloads. Primary currency for podcast advertising per IAB Podcast Measurement guidelines.",
+    "plays": "Number of times the ad creative is displayed on a DOOH screen or played in a loop. Raw play count before any impression multiplier is applied. Use alongside impressions or measured_impressions when buyers need both the play count and the multiplied audience figure."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/format-id-parameter.json b/schemas/cache/enums/format-id-parameter.json
index 842987db7..9a6f9f931 100644
--- a/schemas/cache/enums/format-id-parameter.json
+++ b/schemas/cache/enums/format-id-parameter.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Format ID Parameter",
   "description": "Types of parameters that template formats accept in format_id objects to create parameterized format identifiers",
+  "type": "string",
   "enum": [
     "dimensions",
     "duration"
-  ],
-  "title": "Format ID Parameter",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/frequency-cap-scope.json b/schemas/cache/enums/frequency-cap-scope.json
index 4a4d0ccaf..6893ff4ee 100644
--- a/schemas/cache/enums/frequency-cap-scope.json
+++ b/schemas/cache/enums/frequency-cap-scope.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Frequency Cap Scope",
   "description": "Scope for frequency cap application",
+  "type": "string",
   "enum": [
     "package"
   ],
   "enumDescriptions": {
     "package": "Apply frequency cap at the package level"
-  },
-  "title": "Frequency Cap Scope",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/geo-level.json b/schemas/cache/enums/geo-level.json
index 95be4cb91..2322bb1ce 100644
--- a/schemas/cache/enums/geo-level.json
+++ b/schemas/cache/enums/geo-level.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Geographic Targeting Level",
   "description": "Geographic targeting granularity levels. Some levels (metro, postal_area) require a system specification.",
+  "type": "string",
   "enum": [
     "country",
     "region",
     "metro",
     "postal_area"
-  ],
-  "title": "Geographic Targeting Level",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/governance-domain.json b/schemas/cache/enums/governance-domain.json
index f21d54c09..fe1959154 100644
--- a/schemas/cache/enums/governance-domain.json
+++ b/schemas/cache/enums/governance-domain.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Governance Domain",
   "description": "Governance sub-domains that a registry policy applies to. Used to indicate which types of governance agents can evaluate this policy.",
+  "type": "string",
   "enum": [
     "campaign",
     "property",
     "creative",
     "content_standards"
-  ],
-  "title": "Governance Domain",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/governance-mode.json b/schemas/cache/enums/governance-mode.json
index a836623a7..0877d4211 100644
--- a/schemas/cache/enums/governance-mode.json
+++ b/schemas/cache/enums/governance-mode.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Governance Mode",
   "description": "Operating mode for a governance agent. Controls whether findings block execution.",
+  "type": "string",
   "enum": [
     "audit",
     "advisory",
     "enforce"
   ],
   "enumDescriptions": {
-    "advisory": "Flag issues and return findings, but do not block execution. Human reviews happen post-hoc.",
     "audit": "Log all checks, never block. Findings are recorded but the governance agent always returns approved.",
+    "advisory": "Flag issues and return findings, but do not block execution. Human reviews happen post-hoc.",
     "enforce": "Block on denied or escalated. Require resolution before proceeding."
-  },
-  "title": "Governance Mode",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/governance-phase.json b/schemas/cache/enums/governance-phase.json
index 92342a4f6..5582bca20 100644
--- a/schemas/cache/enums/governance-phase.json
+++ b/schemas/cache/enums/governance-phase.json
@@ -1,11 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "description": "The phase of the media buy lifecycle that triggered the governance check.",
+  "title": "Governance Phase",
+  "description": "The phase of the governed action's lifecycle that triggered the governance check.",
+  "type": "string",
   "enum": [
     "purchase",
     "modification",
     "delivery"
-  ],
-  "title": "Governance Phase",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/history-entry-type.json b/schemas/cache/enums/history-entry-type.json
index 1bf5b6263..b1b98ab87 100644
--- a/schemas/cache/enums/history-entry-type.json
+++ b/schemas/cache/enums/history-entry-type.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "History Entry Type",
   "description": "Type of entry in task execution history",
+  "type": "string",
   "enum": [
     "request",
     "response"
-  ],
-  "title": "History Entry Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/http-method.json b/schemas/cache/enums/http-method.json
index 2990717f2..60660128d 100644
--- a/schemas/cache/enums/http-method.json
+++ b/schemas/cache/enums/http-method.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "HTTP Method",
   "description": "HTTP methods supported for webhook requests",
+  "type": "string",
   "enum": [
     "GET",
     "POST"
-  ],
-  "title": "HTTP Method",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/identifier-types.json b/schemas/cache/enums/identifier-types.json
index 7662e4e5f..c7aae9da2 100644
--- a/schemas/cache/enums/identifier-types.json
+++ b/schemas/cache/enums/identifier-types.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Property Identifier Types",
   "description": "Valid identifier types for property identification across different media types",
+  "type": "string",
   "enum": [
     "domain",
     "subdomain",
@@ -20,14 +22,39 @@
     "rss_url",
     "apple_podcast_id",
     "spotify_collection_id",
-    "podcast_guid"
+    "podcast_guid",
+    "station_id",
+    "facility_id"
   ],
+  "enumDescriptions": {
+    "domain": "Web domain (e.g., example.com)",
+    "subdomain": "Specific subdomain (e.g., news.example.com)",
+    "network_id": "Network or platform-specific identifier",
+    "ios_bundle": "iOS app bundle identifier (e.g., com.example.app)",
+    "android_package": "Android package name (e.g., com.example.app)",
+    "apple_app_store_id": "Apple App Store numeric ID",
+    "google_play_id": "Google Play Store package ID",
+    "roku_store_id": "Roku Channel Store identifier",
+    "fire_tv_asin": "Amazon Fire TV ASIN",
+    "samsung_app_id": "Samsung TV app identifier",
+    "apple_tv_bundle": "Apple TV app bundle identifier",
+    "bundle_id": "Generic app bundle identifier",
+    "venue_id": "DOOH venue identifier",
+    "screen_id": "DOOH screen identifier within a venue",
+    "openooh_venue_type": "OpenOOH venue taxonomy classification",
+    "rss_url": "RSS feed URL for podcast or content feed",
+    "apple_podcast_id": "Apple Podcasts numeric ID",
+    "spotify_collection_id": "Spotify show or collection URI",
+    "podcast_guid": "Podcast GUID (podcasting 2.0 namespace)",
+    "station_id": "Broadcast station identifier \u2014 call sign, station name, or other locally recognized identifier (e.g., WCBS-FM, BBC Radio 4, France Inter, 2GB)",
+    "facility_id": "Broadcast facility or license ID from a national regulator, prefixed with authority slug (e.g., fcc:73953, ofcom:AL000001). Known prefixes: fcc (US), crtc (Canada), ift (Mexico), ofcom (UK), arcom (France), bnetza/medienanstalt (Germany), acma (Australia), mic (Japan), kcc (South Korea), anatel (Brazil), enacom (Argentina), trai (India)"
+  },
   "examples": [
     "domain",
     "ios_bundle",
     "venue_id",
-    "apple_podcast_id"
-  ],
-  "title": "Property Identifier Types",
-  "type": "string"
+    "apple_podcast_id",
+    "station_id",
+    "facility_id"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/javascript-module-type.json b/schemas/cache/enums/javascript-module-type.json
index 979549571..089b8973a 100644
--- a/schemas/cache/enums/javascript-module-type.json
+++ b/schemas/cache/enums/javascript-module-type.json
@@ -1,11 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "JavaScript Module Type",
   "description": "JavaScript module format types for creative assets",
+  "type": "string",
   "enum": [
     "esm",
     "commonjs",
     "script"
-  ],
-  "title": "JavaScript Module Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/landing-page-requirement.json b/schemas/cache/enums/landing-page-requirement.json
index 703e18675..88f47febd 100644
--- a/schemas/cache/enums/landing-page-requirement.json
+++ b/schemas/cache/enums/landing-page-requirement.json
@@ -1,11 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Landing Page Requirement",
   "description": "Landing page policy for creative click-through destinations",
+  "type": "string",
   "enum": [
     "any",
     "retailer_site_only",
     "must_include_retailer"
-  ],
-  "title": "Landing Page Requirement",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/markdown-flavor.json b/schemas/cache/enums/markdown-flavor.json
index e79f05198..78f48c85c 100644
--- a/schemas/cache/enums/markdown-flavor.json
+++ b/schemas/cache/enums/markdown-flavor.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Markdown Flavor",
   "description": "Markdown specification flavors supported for text assets",
+  "type": "string",
   "enum": [
     "commonmark",
     "gfm"
-  ],
-  "title": "Markdown Flavor",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/match-id-type.json b/schemas/cache/enums/match-id-type.json
index 5da1d07f7..e8f34ced6 100644
--- a/schemas/cache/enums/match-id-type.json
+++ b/schemas/cache/enums/match-id-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Match ID Type",
   "description": "Identifier types for audience match reporting. Combines hashed PII types (from audience-member.json field names) with universal ID types (from uid-type.json).",
+  "type": "string",
   "enum": [
     "hashed_email",
     "hashed_phone",
@@ -13,16 +15,14 @@
     "other"
   ],
   "enumDescriptions": {
-    "euid": "European Unified ID",
     "hashed_email": "SHA-256 hashed email address (matches audience-member.hashed_email)",
     "hashed_phone": "SHA-256 hashed phone number in E.164 format (matches audience-member.hashed_phone)",
+    "rampid": "LiveRamp RampID",
     "id5": "ID5 universal ID",
-    "maid": "Mobile Advertising ID (IDFA/GAID)",
-    "other": "Other identifier type (specify in ext)",
+    "uid2": "Unified ID 2.0",
+    "euid": "European Unified ID",
     "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
-    "rampid": "LiveRamp RampID",
-    "uid2": "Unified ID 2.0"
-  },
-  "title": "Match ID Type",
-  "type": "string"
+    "maid": "Mobile Advertising ID (IDFA/GAID)",
+    "other": "Other identifier type (specify in ext)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/media-buy-status.json b/schemas/cache/enums/media-buy-status.json
index 0ec5548c6..2b0d55037 100644
--- a/schemas/cache/enums/media-buy-status.json
+++ b/schemas/cache/enums/media-buy-status.json
@@ -1,8 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Media Buy Status",
   "description": "Status of a media buy.",
+  "type": "string",
   "enum": [
-    "pending_activation",
+    "pending_creatives",
+    "pending_start",
     "active",
     "paused",
     "completed",
@@ -10,13 +13,12 @@
     "canceled"
   ],
   "enumDescriptions": {
+    "pending_creatives": "Media buy is approved but has no creatives assigned. The buyer must attach creatives via sync_creatives before the buy can serve.",
+    "pending_start": "Media buy is ready to serve and waiting for its flight date to begin.",
     "active": "Media buy is currently running",
-    "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated.",
-    "completed": "Media buy has finished running",
     "paused": "Media buy is temporarily paused",
-    "pending_activation": "Media buy created but not yet activated",
-    "rejected": "Media buy was declined by the seller after creation"
-  },
-  "title": "Media Buy Status",
-  "type": "string"
+    "completed": "Media buy has finished running",
+    "rejected": "Media buy was declined by the seller after creation",
+    "canceled": "Media buy was terminated before natural completion. Check cancellation.canceled_by to determine whether the buyer or seller initiated."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/metric-type.json b/schemas/cache/enums/metric-type.json
index e9fa1c318..93123cff1 100644
--- a/schemas/cache/enums/metric-type.json
+++ b/schemas/cache/enums/metric-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Metric Type",
   "description": "Performance metric types for feedback and optimization",
+  "type": "string",
   "enum": [
     "overall_performance",
     "conversion_rate",
@@ -10,7 +12,5 @@
     "viewability",
     "brand_safety",
     "cost_efficiency"
-  ],
-  "title": "Metric Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/metro-system.json b/schemas/cache/enums/metro-system.json
index a36595e1f..a15d1e4c5 100644
--- a/schemas/cache/enums/metro-system.json
+++ b/schemas/cache/enums/metro-system.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Metro Area System",
   "description": "Metro area classification systems for geographic targeting",
+  "type": "string",
   "enum": [
     "nielsen_dma",
     "uk_itl1",
     "uk_itl2",
     "eurostat_nuts2",
     "custom"
-  ],
-  "title": "Metro Area System",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/notification-type.json b/schemas/cache/enums/notification-type.json
index b2e61d82c..6d8a1c33d 100644
--- a/schemas/cache/enums/notification-type.json
+++ b/schemas/cache/enums/notification-type.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Notification Type",
   "description": "Type of delivery notification for media buy reporting",
+  "type": "string",
   "enum": [
     "scheduled",
     "final",
     "delayed",
     "adjusted"
-  ],
-  "title": "Notification Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/outcome-type.json b/schemas/cache/enums/outcome-type.json
index 4b24ecbf5..b4ddffdcf 100644
--- a/schemas/cache/enums/outcome-type.json
+++ b/schemas/cache/enums/outcome-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Outcome Type",
   "description": "The type of outcome reported to a campaign governance agent after a seller interaction.",
+  "type": "string",
   "enum": [
     "completed",
     "failed",
@@ -8,9 +10,7 @@
   ],
   "enumDescriptions": {
     "completed": "The action completed successfully. The seller confirmed the request.",
-    "delivery": "Periodic delivery report with pacing and performance metrics.",
-    "failed": "The action failed. No budget is committed."
-  },
-  "title": "Outcome Type",
-  "type": "string"
+    "failed": "The action failed. No budget is committed.",
+    "delivery": "Periodic delivery report with pacing and performance metrics."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/pacing.json b/schemas/cache/enums/pacing.json
index 63ccfd272..7ff335caa 100644
--- a/schemas/cache/enums/pacing.json
+++ b/schemas/cache/enums/pacing.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Pacing",
   "description": "Budget pacing strategy",
+  "type": "string",
   "enum": [
     "even",
     "asap",
     "front_loaded"
   ],
   "enumDescriptions": {
-    "asap": "Spend remaining budget as quickly as possible",
     "even": "Allocate remaining budget evenly over remaining campaign duration (default)",
+    "asap": "Spend remaining budget as quickly as possible",
     "front_loaded": "Allocate more remaining budget earlier in the remaining campaign period"
-  },
-  "title": "Pacing",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/policy-category.json b/schemas/cache/enums/policy-category.json
index 610828402..bae4a2715 100644
--- a/schemas/cache/enums/policy-category.json
+++ b/schemas/cache/enums/policy-category.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Policy Category",
   "description": "The nature of the obligation a policy represents.",
+  "type": "string",
   "enum": [
     "regulation",
     "standard"
@@ -8,7 +10,5 @@
   "enumDescriptions": {
     "regulation": "Legal requirement with jurisdiction scope. Violations have legal consequences. Enforcement is hard (must).",
     "standard": "Industry best practice, voluntary but recommended. Protects brand value and campaign effectiveness. Enforcement is soft (should)."
-  },
-  "title": "Policy Category",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/policy-enforcement.json b/schemas/cache/enums/policy-enforcement.json
index 02800f78e..6496aa77b 100644
--- a/schemas/cache/enums/policy-enforcement.json
+++ b/schemas/cache/enums/policy-enforcement.json
@@ -1,16 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Policy Enforcement Level",
   "description": "How governance agents treat violations of a policy. Uses RFC 2119 keywords.",
+  "type": "string",
   "enum": [
     "must",
     "should",
     "may"
   ],
   "enumDescriptions": {
-    "may": "Recommendation. Governance agents log for informational purposes only.",
     "must": "Legal requirement. Governance agents reject actions that violate this policy.",
-    "should": "Best practice. Governance agents warn on violations but do not block."
-  },
-  "title": "Policy Enforcement Level",
-  "type": "string"
+    "should": "Best practice. Governance agents warn on violations but do not block.",
+    "may": "Recommendation. Governance agents log for informational purposes only."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/postal-system.json b/schemas/cache/enums/postal-system.json
index 31e516afb..2394b8f0e 100644
--- a/schemas/cache/enums/postal-system.json
+++ b/schemas/cache/enums/postal-system.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Postal Code System",
   "description": "Postal code systems for geographic targeting. System names encode country and precision level.",
+  "type": "string",
   "enum": [
     "us_zip",
     "us_zip_plus_four",
@@ -13,7 +15,5 @@
     "au_postcode",
     "ch_plz",
     "at_plz"
-  ],
-  "title": "Postal Code System",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/preview-output-format.json b/schemas/cache/enums/preview-output-format.json
index b38453646..8c60e9492 100644
--- a/schemas/cache/enums/preview-output-format.json
+++ b/schemas/cache/enums/preview-output-format.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Preview Output Format",
   "description": "Output format for creative previews",
+  "type": "string",
   "enum": [
     "url",
     "html"
-  ],
-  "title": "Preview Output Format",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/pricing-model.json b/schemas/cache/enums/pricing-model.json
index ab95b7f07..1093d6b15 100644
--- a/schemas/cache/enums/pricing-model.json
+++ b/schemas/cache/enums/pricing-model.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Pricing Model",
   "description": "Supported pricing models for advertising products",
+  "type": "string",
   "enum": [
     "cpm",
     "vcpm",
@@ -13,16 +15,14 @@
     "time"
   ],
   "enumDescriptions": {
-    "cpa": "Cost Per Acquisition - cost per conversion event (purchase, lead, signup, etc.)",
+    "cpm": "Cost Per Mille - cost per 1,000 impressions",
+    "vcpm": "Viewable Cost Per Mille - cost per 1,000 viewable impressions (MRC standard)",
     "cpc": "Cost Per Click - cost per click on the ad",
     "cpcv": "Cost Per Completed View - cost per 100% video/audio completion",
-    "cpm": "Cost Per Mille - cost per 1,000 impressions",
-    "cpp": "Cost Per Point - cost per Gross Rating Point or Target Rating Point (TV/audio)",
     "cpv": "Cost Per View - cost per view at publisher-defined threshold (e.g., 50% completion)",
+    "cpp": "Cost Per Point - cost per Gross Rating Point or Target Rating Point (TV/audio)",
+    "cpa": "Cost Per Acquisition - cost per conversion event (purchase, lead, signup, etc.)",
     "flat_rate": "Flat Rate - fixed cost regardless of delivery volume (sponsorships, takeovers)",
-    "time": "Time - cost per time unit (hour, day, week, or month) that scales with campaign duration",
-    "vcpm": "Viewable Cost Per Mille - cost per 1,000 viewable impressions (MRC standard)"
-  },
-  "title": "Pricing Model",
-  "type": "string"
+    "time": "Time - cost per time unit (hour, day, week, or month) that scales with campaign duration"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/production-quality.json b/schemas/cache/enums/production-quality.json
index dc7eb7325..a3c88609d 100644
--- a/schemas/cache/enums/production-quality.json
+++ b/schemas/cache/enums/production-quality.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Production Quality",
   "description": "Production quality tier for collection content. Maps to OpenRTB content.prodq: professional=1, prosumer=2, ugc=3. Seller-declared \u2014 no external validation.",
+  "type": "string",
   "enum": [
     "professional",
     "prosumer",
@@ -10,7 +12,5 @@
     "professional": "Studio-produced content with professional crew and equipment",
     "prosumer": "Semi-professional production (high-quality independent creators)",
     "ugc": "User-generated content"
-  },
-  "title": "Production Quality",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/property-type.json b/schemas/cache/enums/property-type.json
index 3cbd25dcb..e7fb00bde 100644
--- a/schemas/cache/enums/property-type.json
+++ b/schemas/cache/enums/property-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Property Type",
   "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
+  "type": "string",
   "enum": [
     "website",
     "mobile_app",
@@ -9,20 +11,20 @@
     "dooh",
     "podcast",
     "radio",
+    "linear_tv",
     "streaming_audio",
     "ai_assistant"
   ],
   "enumDescriptions": {
-    "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs",
+    "website": "Web properties accessible via browser, identified by domain",
+    "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
     "ctv_app": "Connected TV applications, identified by platform-specific store IDs",
     "desktop_app": "Desktop applications (Electron, native, Chromium wrappers), identified by application bundle IDs",
     "dooh": "Digital out-of-home screen networks, identified by network/venue IDs",
-    "mobile_app": "Native mobile applications, identified by app store IDs or bundle identifiers",
     "podcast": "Podcast feeds and episodes, identified by RSS feed URLs or podcast IDs",
-    "radio": "Radio station properties, identified by call signs or station IDs",
+    "radio": "Radio station properties, identified by station ID or facility ID",
+    "linear_tv": "Linear television stations and networks, identified by station ID or facility ID",
     "streaming_audio": "Digital audio streaming properties, identified by platform-specific IDs",
-    "website": "Web properties accessible via browser, identified by domain"
-  },
-  "title": "Property Type",
-  "type": "string"
+    "ai_assistant": "AI-powered conversational interfaces including chatbots, AI assistants, and conversational AI platforms, identified by platform-specific IDs"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/proposal-status.json b/schemas/cache/enums/proposal-status.json
index 0b9ad40e1..3cc5032bc 100644
--- a/schemas/cache/enums/proposal-status.json
+++ b/schemas/cache/enums/proposal-status.json
@@ -1,14 +1,14 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Proposal Status",
   "description": "Lifecycle status of a proposal. Absent means the proposal is ready to buy (backward compatible with pre-v3.1 proposals). 'draft' indicates indicative pricing that must be finalized before purchase. 'committed' indicates firm pricing with inventory reserved until expires_at.",
+  "type": "string",
   "enum": [
     "draft",
     "committed"
   ],
   "enumDescriptions": {
-    "committed": "Firm pricing with inventory reserved. The buyer can execute this proposal via create_media_buy before expires_at. After expires_at, the hold lapses and the buyer must re-finalize or re-discover.",
-    "draft": "Indicative pricing and availability. The buyer can compare and plan but must finalize before purchasing. Use the 'finalize' refine action to request firm pricing."
-  },
-  "title": "Proposal Status",
-  "type": "string"
+    "draft": "Indicative pricing and availability. The buyer can compare and plan but must finalize before purchasing. Use the 'finalize' refine action to request firm pricing.",
+    "committed": "Firm pricing with inventory reserved. The buyer can execute this proposal via create_media_buy before expires_at. After expires_at, the hold lapses and the buyer must re-finalize or re-discover."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/publisher-identifier-types.json b/schemas/cache/enums/publisher-identifier-types.json
index 073a55752..5a4f93c2d 100644
--- a/schemas/cache/enums/publisher-identifier-types.json
+++ b/schemas/cache/enums/publisher-identifier-types.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Publisher Identifier Types",
   "description": "Valid identifier types for publisher/legal entity identification",
+  "type": "string",
   "enum": [
     "tag_id",
     "duns",
@@ -12,7 +14,5 @@
     "tag_id",
     "seller_id",
     "duns"
-  ],
-  "title": "Publisher Identifier Types",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/purchase-type.json b/schemas/cache/enums/purchase-type.json
new file mode 100644
index 000000000..2d3472e2d
--- /dev/null
+++ b/schemas/cache/enums/purchase-type.json
@@ -0,0 +1,12 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Purchase Type",
+  "description": "The type of financial commitment being governed.",
+  "type": "string",
+  "enum": [
+    "media_buy",
+    "rights_license",
+    "signal_activation",
+    "creative_services"
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/reach-unit.json b/schemas/cache/enums/reach-unit.json
index 2e3a0b5e4..f58a75889 100644
--- a/schemas/cache/enums/reach-unit.json
+++ b/schemas/cache/enums/reach-unit.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Reach Unit",
   "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
+  "type": "string",
   "enum": [
     "individuals",
     "households",
@@ -10,13 +12,11 @@
     "custom"
   ],
   "enumDescriptions": {
+    "individuals": "Unique people. Panel-based or identity-resolved measurement.",
+    "households": "Unique households or TV homes.",
+    "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
     "accounts": "Unique logged-in accounts (platform-specific identity).",
     "cookies": "Unique browser cookies.",
-    "custom": "Publisher-defined reach unit. Describe in ext.",
-    "devices": "Unique device identifiers (IDFA, GAID, CTV device ID).",
-    "households": "Unique households or TV homes.",
-    "individuals": "Unique people. Panel-based or identity-resolved measurement."
-  },
-  "title": "Reach Unit",
-  "type": "string"
+    "custom": "Publisher-defined reach unit. Describe in ext."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/reporting-frequency.json b/schemas/cache/enums/reporting-frequency.json
index 4c2f6ce07..061e08d58 100644
--- a/schemas/cache/enums/reporting-frequency.json
+++ b/schemas/cache/enums/reporting-frequency.json
@@ -1,11 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Reporting Frequency",
   "description": "Available frequencies for delivery reports and metrics updates",
+  "type": "string",
   "enum": [
     "hourly",
     "daily",
     "monthly"
-  ],
-  "title": "Reporting Frequency",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/response-type.json b/schemas/cache/enums/response-type.json
index 3e7ea332e..e80d8b270 100644
--- a/schemas/cache/enums/response-type.json
+++ b/schemas/cache/enums/response-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "TMP Response Type",
   "description": "What the publisher wants back from a TMP context match. Determines the richness level of the buyer's offer response.",
+  "type": "string",
   "enum": [
     "activation",
     "catalog_items",
@@ -12,7 +14,5 @@
     "catalog_items": "Preferred catalog items for rendering. Offers may include catalog item references.",
     "creative": "Inline creative manifest. Offers include full rendering details.",
     "deal": "Deal ID for programmatic execution. Offers include deal metadata."
-  },
-  "title": "TMP Response Type",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/restricted-attribute.json b/schemas/cache/enums/restricted-attribute.json
index 91c39fe55..948e95e20 100644
--- a/schemas/cache/enums/restricted-attribute.json
+++ b/schemas/cache/enums/restricted-attribute.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Restricted Attribute",
   "description": "Personal data categories that may be restricted from use in audience targeting. Based on GDPR Article 9 special categories of personal data, which are also referenced by EU DSA Article 26 for advertising restrictions. Used in two places: (1) on campaign plans via restricted_attributes to declare which categories are prohibited, and (2) on signal-definition.json via restricted_attributes to declare which categories a signal touches. Governance agents match plan restrictions against signal declarations for structural validation.",
+  "type": "string",
   "enum": [
     "racial_ethnic_origin",
     "political_opinions",
@@ -12,15 +14,13 @@
     "biometric_data"
   ],
   "enumDescriptions": {
-    "biometric_data": "Biometric data used for identification. GDPR Article 9(1).",
-    "genetic_data": "Genetic data. GDPR Article 9(1), US GINA.",
-    "health_data": "Health status, medical conditions, disability. GDPR Article 9(1), US ADA protected class. Includes inferred health data from behavioral signals.",
-    "political_opinions": "Political opinions or affiliations. GDPR Article 9(1). EU DSA Article 26 prohibits targeting on this category.",
     "racial_ethnic_origin": "Race or ethnic origin. GDPR Article 9(1), US FHA/ECOA/EEOC protected class.",
+    "political_opinions": "Political opinions or affiliations. GDPR Article 9(1). EU DSA Article 26 prohibits targeting on this category.",
     "religious_beliefs": "Religious or philosophical beliefs. GDPR Article 9(1), US FHA/EEOC protected class.",
+    "trade_union_membership": "Trade union membership. GDPR Article 9(1).",
+    "health_data": "Health status, medical conditions, disability. GDPR Article 9(1), US ADA protected class. Includes inferred health data from behavioral signals.",
     "sex_life_sexual_orientation": "Sex life or sexual orientation. GDPR Article 9(1).",
-    "trade_union_membership": "Trade union membership. GDPR Article 9(1)."
-  },
-  "title": "Restricted Attribute",
-  "type": "string"
+    "genetic_data": "Genetic data. GDPR Article 9(1), US GINA.",
+    "biometric_data": "Biometric data used for identification. GDPR Article 9(1)."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/right-type.json b/schemas/cache/enums/right-type.json
index 35c9db312..62b0ba20d 100644
--- a/schemas/cache/enums/right-type.json
+++ b/schemas/cache/enums/right-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Right Type",
   "description": "Categories of intellectual property rights that can be licensed through the brand protocol.",
+  "type": "string",
   "enum": [
     "talent",
     "character",
@@ -9,12 +11,10 @@
     "stock_media"
   ],
   "enumDescriptions": {
-    "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
+    "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)",
     "character": "Rights to fictional characters for advertising or co-branding",
+    "brand_ip": "Rights to brand intellectual property (logos, trademarks, trade dress)",
     "music": "Rights to musical compositions or recordings (sync, background music)",
-    "stock_media": "Rights to stock photography, video, or audio collections",
-    "talent": "Rights to a real person's likeness, voice, name, or endorsement (athletes, celebrities, influencers)"
-  },
-  "title": "Right Type",
-  "type": "string"
+    "stock_media": "Rights to stock photography, video, or audio collections"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/right-use.json b/schemas/cache/enums/right-use.json
index 87b3fa865..b4801c0c0 100644
--- a/schemas/cache/enums/right-use.json
+++ b/schemas/cache/enums/right-use.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Right Use",
   "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
+  "type": "string",
   "enum": [
     "likeness",
     "voice",
@@ -15,18 +17,16 @@
     "commercial"
   ],
   "enumDescriptions": {
-    "background_music": "Use of music as background audio in advertising",
-    "catchphrase": "Use of a person's well-known phrases or sayings",
-    "commercial": "Use in commercial advertising and promotional contexts",
-    "editorial": "Use in editorial or informational contexts",
-    "endorsement": "Implied or explicit endorsement of a product or service by a person",
     "likeness": "Visual representation of a person's appearance, including AI-generated imagery",
-    "motion_capture": "Use of a person's movement patterns for animation or video",
+    "voice": "Audio reproduction of a person's voice, including AI-generated speech",
     "name": "Use of a person's name in advertising or promotional materials",
+    "endorsement": "Implied or explicit endorsement of a product or service by a person",
+    "motion_capture": "Use of a person's movement patterns for animation or video",
     "signature": "Use of a person's signature or autograph",
+    "catchphrase": "Use of a person's well-known phrases or sayings",
     "sync": "Synchronization of music with visual media (ads, video)",
-    "voice": "Audio reproduction of a person's voice, including AI-generated speech"
-  },
-  "title": "Right Use",
-  "type": "string"
+    "background_music": "Use of music as background audio in advertising",
+    "editorial": "Use in editorial or informational contexts",
+    "commercial": "Use in commercial advertising and promotional contexts"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/si-session-status.json b/schemas/cache/enums/si-session-status.json
index 3aafd30e0..5b179527a 100644
--- a/schemas/cache/enums/si-session-status.json
+++ b/schemas/cache/enums/si-session-status.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI Session Status",
   "description": "State of a Sponsored Intelligence session between a host and a brand agent",
+  "type": "string",
   "enum": [
     "active",
     "pending_handoff",
@@ -9,10 +11,8 @@
   ],
   "enumDescriptions": {
     "active": "Session is in progress and accepting messages",
-    "complete": "Session ended normally after successful conversation or handoff",
     "pending_handoff": "Brand agent is requesting handoff to a commerce or external flow; host should process the handoff object",
+    "complete": "Session ended normally after successful conversation or handoff",
     "terminated": "Session was ended due to timeout, error, policy violation, or explicit host/user action"
-  },
-  "title": "SI Session Status",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/signal-catalog-type.json b/schemas/cache/enums/signal-catalog-type.json
index 40bf707cf..8b1d393c5 100644
--- a/schemas/cache/enums/signal-catalog-type.json
+++ b/schemas/cache/enums/signal-catalog-type.json
@@ -1,11 +1,16 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Signal Catalog Type",
   "description": "Types of signal catalogs available for audience targeting",
+  "type": "string",
   "enum": [
     "marketplace",
     "custom",
     "owned"
   ],
-  "title": "Signal Catalog Type",
-  "type": "string"
+  "enumDescriptions": {
+    "marketplace": "Resold third-party segments (provider authorization verifiable via the provider's adagents.json)",
+    "custom": "Agent-native segment built on demand from models, composites, or buyer inputs \u2014 not attributable to a standing upstream provider",
+    "owned": "First-party segments derived from data the signal agent directly owns (retailer purchase data, publisher behavioral data, telco data)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/signal-source.json b/schemas/cache/enums/signal-source.json
index 14f81947f..6887f001b 100644
--- a/schemas/cache/enums/signal-source.json
+++ b/schemas/cache/enums/signal-source.json
@@ -1,14 +1,14 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Signal Source",
   "description": "Source type for signal identifiers. Determines how the signal is referenced and whether authorization can be externally verified.",
+  "type": "string",
   "enum": [
     "catalog",
     "agent"
   ],
   "enumDescriptions": {
-    "agent": "Signal native to the signals agent. Referenced by agent_url + id. Not externally verifiable - buyer trusts the agent's claim about the signal.",
-    "catalog": "Signal from a data provider's published catalog. Referenced by data_provider_domain + id. Authorization can be verified by checking the data provider's adagents.json."
-  },
-  "title": "Signal Source",
-  "type": "string"
+    "catalog": "Signal from a data provider's published catalog. Referenced by data_provider_domain + id. Authorization can be verified by checking the data provider's adagents.json.",
+    "agent": "Signal native to the signals agent. Referenced by agent_url + id. Not externally verifiable - buyer trusts the agent's claim about the signal."
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/signal-value-type.json b/schemas/cache/enums/signal-value-type.json
index b81f863b0..e50d385b9 100644
--- a/schemas/cache/enums/signal-value-type.json
+++ b/schemas/cache/enums/signal-value-type.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Signal Value Type",
   "description": "The data type of a signal's values, determining how it can be targeted",
+  "type": "string",
   "enum": [
     "binary",
     "categorical",
     "numeric"
   ],
-  "title": "Signal Value Type",
-  "type": "string",
   "x-enum-descriptions": {
     "binary": "Boolean signal - user either matches or doesn't (e.g., 'likely_tesla_buyers')",
     "categorical": "Signal with discrete values from a defined set (e.g., 'vehicle_ownership' with values 'tesla', 'bmw', etc.)",
diff --git a/schemas/cache/enums/sort-direction.json b/schemas/cache/enums/sort-direction.json
index 7423f519b..5e3b24e59 100644
--- a/schemas/cache/enums/sort-direction.json
+++ b/schemas/cache/enums/sort-direction.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sort Direction",
   "description": "Sort direction for list queries",
+  "type": "string",
   "enum": [
     "asc",
     "desc"
-  ],
-  "title": "Sort Direction",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/sort-metric.json b/schemas/cache/enums/sort-metric.json
index 6fa73f34b..5b4e99b71 100644
--- a/schemas/cache/enums/sort-metric.json
+++ b/schemas/cache/enums/sort-metric.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sort Metric",
   "description": "Numeric delivery metrics available for sorting breakdown rows. Subset of delivery-metrics fields that are flat numeric values (excludes nested objects like quartile_data, dooh_metrics, viewability, by_event_type, by_action_source).",
+  "type": "string",
   "enum": [
     "impressions",
     "spend",
@@ -24,7 +26,5 @@
     "profile_visits",
     "engagement_rate",
     "cost_per_click"
-  ],
-  "title": "Sort Metric",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/specialism.json b/schemas/cache/enums/specialism.json
new file mode 100644
index 000000000..49b68ace5
--- /dev/null
+++ b/schemas/cache/enums/specialism.json
@@ -0,0 +1,54 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "AdCP Specialism",
+  "description": "Specialized capability claims an agent can make. Each specialism maps to a compliance storyboard bundle published at /compliance/{version}/specialisms/{id}/. An agent asserts specialisms it supports in get_adcp_capabilities; the AAO compliance runner executes the matching storyboards to verify the claim.",
+  "type": "string",
+  "enum": [
+    "audience-sync",
+    "brand-rights",
+    "content-standards",
+    "creative-ad-server",
+    "creative-generative",
+    "creative-template",
+    "governance-delivery-monitor",
+    "governance-spend-authority",
+    "measurement-verification",
+    "property-lists",
+    "sales-broadcast-tv",
+    "sales-catalog-driven",
+    "sales-exchange",
+    "sales-guaranteed",
+    "sales-non-guaranteed",
+    "sales-proposal-mode",
+    "sales-retail-media",
+    "sales-social",
+    "sales-streaming-tv",
+    "signal-marketplace",
+    "signal-owned",
+    "signed-requests"
+  ],
+  "enumDescriptions": {
+    "audience-sync": "Syncs buyer-provided audience segments into a platform for activation",
+    "brand-rights": "Brand identity and rights licensing (talent, music, stock media)",
+    "content-standards": "Content standards enforcement (brand safety, policy compliance)",
+    "creative-ad-server": "Creative ad server with tag-based delivery",
+    "creative-generative": "Generative creative agent producing assets on demand",
+    "creative-template": "Creative template and transformation agent",
+    "governance-delivery-monitor": "Campaign delivery monitoring with drift detection",
+    "governance-spend-authority": "Conditional spend approval and human-in-the-loop governance",
+    "measurement-verification": "Third-party measurement and verification across domains (viewability, brand safety, attribution, SI outcomes)",
+    "property-lists": "Property list governance \u2014 curated inclusion and exclusion lists for targeting and delivery compliance",
+    "sales-broadcast-tv": "Broadcast linear TV seller with guaranteed inventory and FCC cancellation rules",
+    "sales-catalog-driven": "Catalog-driven commerce with conversion tracking",
+    "sales-exchange": "Programmatic exchange or SSP exposing auction-based inventory",
+    "sales-guaranteed": "Guaranteed media buys with human IO approval",
+    "sales-non-guaranteed": "Non-guaranteed auction-based media buys",
+    "sales-proposal-mode": "Media buys negotiated via proposal acceptance",
+    "sales-retail-media": "Retail media network seller with onsite, offsite, and in-store inventory",
+    "sales-social": "Social media advertising platform with self-service flows",
+    "sales-streaming-tv": "Connected TV and streaming seller with ad-supported video inventory",
+    "signal-marketplace": "Marketplace signal agent reselling third-party data",
+    "signal-owned": "Owned signal agent exposing first-party segments",
+    "signed-requests": "Agent verifies RFC 9421 transport-layer request signatures per the AdCP request-signing profile. Graded by exercising 29 conformance vectors (21 negative + 8 positive) against the agent's live verifier."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/talent-role.json b/schemas/cache/enums/talent-role.json
index 9c79f401b..2d8add671 100644
--- a/schemas/cache/enums/talent-role.json
+++ b/schemas/cache/enums/talent-role.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Talent Role",
   "description": "Role of a person associated with a collection or installment",
+  "type": "string",
   "enum": [
     "host",
     "guest",
@@ -13,16 +15,14 @@
     "analyst"
   ],
   "enumDescriptions": {
-    "analyst": "Color commentator or subject matter analyst",
-    "cast": "Regular or recurring cast member",
-    "commentator": "Play-by-play or event commentator",
-    "correspondent": "Reporter or field correspondent",
-    "creator": "Collection creator or showrunner",
-    "guest": "Guest appearing on a specific installment",
     "host": "Primary host or anchor of the collection",
+    "guest": "Guest appearing on a specific installment",
+    "creator": "Collection creator or showrunner",
+    "cast": "Regular or recurring cast member",
     "narrator": "Narrator or voiceover",
-    "producer": "Executive or lead producer with on-screen presence"
-  },
-  "title": "Talent Role",
-  "type": "string"
+    "producer": "Executive or lead producer with on-screen presence",
+    "correspondent": "Reporter or field correspondent",
+    "commentator": "Play-by-play or event commentator",
+    "analyst": "Color commentator or subject matter analyst"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/task-status.json b/schemas/cache/enums/task-status.json
index 75b7043b1..cea01173f 100644
--- a/schemas/cache/enums/task-status.json
+++ b/schemas/cache/enums/task-status.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Task Status",
   "description": "Standardized task status values based on A2A TaskState enum. Indicates the current state of any AdCP operation.",
+  "type": "string",
   "enum": [
     "submitted",
     "working",
@@ -13,16 +15,14 @@
     "unknown"
   ],
   "enumDescriptions": {
-    "auth-required": "Task requires authentication to proceed",
-    "canceled": "Task was canceled by the user",
+    "submitted": "Task accepted and queued for long-running execution (hours to days). Client should poll with tasks/get or provide webhook_url at protocol level.",
+    "working": "Agent is actively processing the task, expect completion within 120 seconds",
+    "input-required": "Task is paused and waiting for input from the user (e.g., clarification, approval)",
     "completed": "Task has been successfully completed",
+    "canceled": "Task was canceled by the user",
     "failed": "Task failed due to an error during execution",
-    "input-required": "Task is paused and waiting for input from the user (e.g., clarification, approval)",
     "rejected": "Task was rejected by the agent and was not started",
-    "submitted": "Task accepted and queued for long-running execution (hours to days). Client should poll with tasks/get or provide webhook_url at protocol level.",
-    "unknown": "Task is in an unknown or indeterminate state",
-    "working": "Agent is actively processing the task, expect completion within 120 seconds"
-  },
-  "title": "Task Status",
-  "type": "string"
+    "auth-required": "Task requires authentication to proceed",
+    "unknown": "Task is in an unknown or indeterminate state"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/task-type.json b/schemas/cache/enums/task-type.json
index 636596dfd..d1230d1cc 100644
--- a/schemas/cache/enums/task-type.json
+++ b/schemas/cache/enums/task-type.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Task Type",
   "description": "Valid AdCP task types across all domains. These represent the complete set of operations that can be tracked via the task management system.",
+  "type": "string",
   "enum": [
     "create_media_buy",
     "update_media_buy",
@@ -24,33 +26,31 @@
     "acquire_rights"
   ],
   "enumDescriptions": {
-    "acquire_rights": "Brand domain: Acquire rights from a brand agent with contractual clearance and generation credentials",
-    "activate_signal": "Signals domain: Activate an audience signal on a specific platform or account",
     "create_media_buy": "Media-buy domain: Create a new advertising campaign with one or more packages",
+    "update_media_buy": "Media-buy domain: Update campaign settings, package configuration, or delivery parameters",
+    "sync_creatives": "Media-buy domain: Sync creative assets to publisher's library with upsert semantics",
+    "activate_signal": "Signals domain: Activate an audience signal on a specific platform or account",
+    "get_signals": "Signals domain: Discover available audience signals based on natural language description",
     "create_property_list": "Property domain: Create a new property list with filters and brand reference",
-    "delete_property_list": "Property domain: Delete a property list",
-    "get_account_financials": "Account domain: Query financial status of an operator-billed account (spend, credit, invoices)",
-    "get_brand_identity": "Brand domain: Retrieve brand identity data (logos, colors, tone, assets, voice config) from a brand agent",
-    "get_creative_delivery": "Creative domain: Retrieve variant-level creative delivery data",
+    "update_property_list": "Property domain: Update an existing property list",
     "get_property_list": "Property domain: Retrieve a property list with resolved properties",
-    "get_rights": "Brand domain: Search for licensable rights across a brand agent's roster with pricing",
-    "get_signals": "Signals domain: Discover available audience signals based on natural language description",
     "list_property_lists": "Property domain: List all accessible property lists",
-    "log_event": "Media-buy domain: Send conversion or marketing events for attribution",
+    "delete_property_list": "Property domain: Delete a property list",
     "sync_accounts": "Account domain: Sync advertiser accounts with a seller using upsert semantics",
+    "get_account_financials": "Account domain: Query financial status of an operator-billed account (spend, credit, invoices)",
+    "get_creative_delivery": "Creative domain: Retrieve variant-level creative delivery data",
+    "sync_event_sources": "Media-buy domain: Configure event sources on an account with upsert semantics",
     "sync_audiences": "Media-buy domain: Manage first-party CRM audiences on an account with delta upsert semantics",
     "sync_catalogs": "Media-buy domain: Sync catalog feeds (products, inventory, stores, promotions, offerings) to a platform with approval workflow",
-    "sync_creatives": "Media-buy domain: Sync creative assets to publisher's library with upsert semantics",
-    "sync_event_sources": "Media-buy domain: Configure event sources on an account with upsert semantics",
-    "update_media_buy": "Media-buy domain: Update campaign settings, package configuration, or delivery parameters",
-    "update_property_list": "Property domain: Update an existing property list"
+    "log_event": "Media-buy domain: Send conversion or marketing events for attribution",
+    "get_brand_identity": "Brand domain: Retrieve brand identity data (logos, colors, tone, assets, voice config) from a brand agent",
+    "get_rights": "Brand domain: Search for licensable rights across a brand agent's roster with pricing",
+    "acquire_rights": "Brand domain: Acquire rights from a brand agent with contractual clearance and generation credentials"
   },
   "notes": [
     "Task types map to specific AdCP task operations",
     "Each task type belongs to the 'media-buy', 'signals', 'property', 'account', 'creative', or 'brand' domain",
     "This enum is used in task management APIs (tasks/list, tasks/get) and webhook payloads",
     "New task types require a minor version bump per semantic versioning"
-  ],
-  "title": "Task Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/transport-mode.json b/schemas/cache/enums/transport-mode.json
index da95a7728..5f66be56b 100644
--- a/schemas/cache/enums/transport-mode.json
+++ b/schemas/cache/enums/transport-mode.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Transport Mode",
   "description": "Transportation modes for isochrone-based catchment area calculations. Determines how travel time translates to geographic reach.",
+  "type": "string",
   "enum": [
     "walking",
     "cycling",
@@ -8,11 +10,9 @@
     "public_transport"
   ],
   "enumDescriptions": {
+    "walking": "Pedestrian travel on walkable paths and sidewalks",
     "cycling": "Bicycle travel on roads and cycle paths",
     "driving": "Motor vehicle travel on road networks",
-    "public_transport": "Public transit including bus, rail, metro, and ferry",
-    "walking": "Pedestrian travel on walkable paths and sidewalks"
-  },
-  "title": "Transport Mode",
-  "type": "string"
+    "public_transport": "Public transit including bus, rail, metro, and ferry"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/uid-type.json b/schemas/cache/enums/uid-type.json
index 8305d7cb7..02bd1b818 100644
--- a/schemas/cache/enums/uid-type.json
+++ b/schemas/cache/enums/uid-type.json
@@ -1,8 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "UID Type",
   "description": "Type of user identifier. Used in audience sync, event logging, and TMP identity match requests to tell the receiver which identity graph to resolve against.",
+  "type": "string",
   "enum": [
     "rampid",
+    "rampid_derived",
     "id5",
     "uid2",
     "euid",
@@ -13,16 +16,15 @@
     "other"
   ],
   "enumDescriptions": {
-    "euid": "European Unified ID",
-    "hashed_email": "SHA-256 hashed email address",
+    "rampid": "LiveRamp RampID maintained form (XY, 32 bytes on the wire)",
+    "rampid_derived": "LiveRamp RampID derived form (Xi, 48 bytes on the wire)",
     "id5": "ID5 universal ID",
-    "maid": "Mobile Advertising ID (IDFA/GAID)",
-    "other": "Other universal ID type (specify in ext)",
+    "uid2": "Unified ID 2.0",
+    "euid": "European Unified ID",
     "pairid": "Publisher Addressable Identity via IAB Tech Lab PAIR protocol",
+    "maid": "Mobile Advertising ID (IDFA/GAID)",
+    "hashed_email": "SHA-256 hashed email address",
     "publisher_first_party": "Publisher's own first-party identifier, opaque to buyers",
-    "rampid": "LiveRamp RampID",
-    "uid2": "Unified ID 2.0"
-  },
-  "title": "UID Type",
-  "type": "string"
+    "other": "Other universal ID type (specify in ext)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/universal-macro.json b/schemas/cache/enums/universal-macro.json
index a28242d43..f88955634 100644
--- a/schemas/cache/enums/universal-macro.json
+++ b/schemas/cache/enums/universal-macro.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Universal Macro",
   "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
+  "type": "string",
   "enum": [
     "MEDIA_BUY_ID",
     "PACKAGE_ID",
@@ -55,6 +57,7 @@
     "COLLECTION_NAME",
     "INSTALLMENT_ID",
     "AUDIO_DURATION",
+    "TMPX",
     "AXEM",
     "CATALOG_ID",
     "SKU",
@@ -72,75 +75,74 @@
     "APP_ITEM_ID"
   ],
   "enumDescriptions": {
-    "AD_BREAK_ID": "Unique ad break identifier",
-    "AD_HEIGHT": "Ad slot height in pixels",
-    "AD_WIDTH": "Ad slot width in pixels",
-    "APP_BUNDLE": "App bundle ID (domain or numeric)",
-    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered",
-    "APP_NAME": "Human-readable app name",
-    "AUDIO_DURATION": "Audio content duration in seconds",
-    "AXEM": "AXE contextual metadata (encoded blob)",
+    "MEDIA_BUY_ID": "AdCP media buy identifier",
+    "PACKAGE_ID": "AdCP package identifier",
+    "CREATIVE_ID": "AdCP creative identifier",
     "CACHEBUSTER": "Random number to prevent caching",
-    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
-    "CITY": "City name",
+    "TIMESTAMP": "Unix timestamp in milliseconds",
     "CLICK_URL": "Publisher's click tracking URL (auto-inserted by sales agent)",
-    "COLLECTION_NAME": "Program or collection name",
-    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
-    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
-    "COUNTRY": "ISO 3166-1 alpha-2 country code",
-    "CREATIVE_ID": "AdCP creative identifier",
-    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
-    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
-    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
-    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
-    "DEVICE_MAKE": "Device manufacturer",
-    "DEVICE_MODEL": "Device model identifier",
-    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
-    "DMA": "Nielsen DMA code (US TV markets)",
-    "DOMAIN": "Domain where ad is shown",
-    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
-    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
     "GDPR": "GDPR applicability flag (1=applies, 0=doesn't apply)",
     "GDPR_CONSENT": "IAB TCF 2.0 consent string",
-    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
+    "US_PRIVACY": "US Privacy (CCPA) string",
     "GPP_STRING": "Global Privacy Platform consent string",
-    "GTIN": "Global Trade Item Number for the catalog item being rendered",
-    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
-    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+    "GPP_SID": "GPP Section ID(s) indicating applicable privacy framework sections",
     "IP_ADDRESS": "User IP address (often masked for privacy, may return empty)",
-    "JOB_ID": "Job posting identifier for the catalog item being rendered",
-    "KEYWORDS": "Page keywords (comma-separated)",
-    "LAT": "Latitude coordinate",
     "LIMIT_AD_TRACKING": "Limit Ad Tracking enabled (1=limited, 0=allowed)",
-    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
-    "LONG": "Longitude coordinate",
-    "MEDIA_BUY_ID": "AdCP media buy identifier",
-    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+    "DEVICE_TYPE": "Device category (mobile, tablet, desktop, ctv, dooh)",
     "OS": "Operating system (iOS, Android, tvOS, Roku, etc.)",
     "OS_VERSION": "OS version number",
-    "PACKAGE_ID": "AdCP package identifier",
+    "DEVICE_MAKE": "Device manufacturer",
+    "DEVICE_MODEL": "Device model identifier",
+    "USER_AGENT": "Full user agent string",
+    "APP_BUNDLE": "App bundle ID (domain or numeric)",
+    "APP_NAME": "Human-readable app name",
+    "COUNTRY": "ISO 3166-1 alpha-2 country code",
+    "REGION": "State/province/region code",
+    "CITY": "City name",
+    "ZIP": "Postal code",
+    "DMA": "Nielsen DMA code (US TV markets)",
+    "LAT": "Latitude coordinate",
+    "LONG": "Longitude coordinate",
+    "DEVICE_ID": "Mobile advertising ID (IDFA/AAID)",
+    "DEVICE_ID_TYPE": "Type of device ID (idfa, aaid)",
+    "DOMAIN": "Domain where ad is shown",
     "PAGE_URL": "Full page URL (encoded)",
+    "REFERRER": "HTTP referrer URL",
+    "KEYWORDS": "Page keywords (comma-separated)",
     "PLACEMENT_ID": "Global Placement ID (IAB standard)",
-    "PLAYER_HEIGHT": "Video player height in pixels",
+    "FOLD_POSITION": "Position relative to fold (above_fold, below_fold)",
+    "AD_WIDTH": "Ad slot width in pixels",
+    "AD_HEIGHT": "Ad slot height in pixels",
+    "VIDEO_ID": "Content video identifier",
+    "VIDEO_TITLE": "Content video title",
+    "VIDEO_DURATION": "Content duration in seconds",
+    "VIDEO_CATEGORY": "IAB content category",
+    "CONTENT_GENRE": "Content genre (news, sports, comedy, etc.)",
+    "CONTENT_RATING": "Content rating (G, PG, TV-14, etc.)",
     "PLAYER_WIDTH": "Video player width in pixels",
+    "PLAYER_HEIGHT": "Video player height in pixels",
     "POD_POSITION": "Position within ad break",
     "POD_SIZE": "Total ads in the ad break",
-    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
-    "REFERRER": "HTTP referrer URL",
-    "REGION": "State/province/region code",
-    "SKU": "Product SKU identifier for the catalog item being rendered",
+    "AD_BREAK_ID": "Unique ad break identifier",
     "STATION_ID": "Radio station or podcast identifier",
-    "STORE_ID": "Store location identifier for the catalog item being rendered",
-    "TIMESTAMP": "Unix timestamp in milliseconds",
-    "USER_AGENT": "Full user agent string",
-    "US_PRIVACY": "US Privacy (CCPA) string",
+    "COLLECTION_NAME": "Program or collection name",
+    "INSTALLMENT_ID": "Installment identifier (podcast episode, print issue, etc.)",
+    "AUDIO_DURATION": "Audio content duration in seconds",
+    "TMPX": "TMP exposure token \u2014 HPKE-encrypted identity tokens for per-user exposure tracking. Produced by Identity Match, substituted into creative tracking URLs, received by the buyer's impression pixel.",
+    "AXEM": "AXE contextual metadata (encoded blob). Legacy \u2014 in TMP, use Offer macros for dynamic creative values and TMPX for exposure tracking.",
+    "CATALOG_ID": "Buyer-defined catalog identifier from the catalog's catalog_id field",
+    "SKU": "Product SKU identifier for the catalog item being rendered",
+    "GTIN": "Global Trade Item Number for the catalog item being rendered",
+    "OFFERING_ID": "AdCP offering identifier for the catalog item being rendered",
+    "JOB_ID": "Job posting identifier for the catalog item being rendered",
+    "HOTEL_ID": "Hotel property identifier for the catalog item being rendered",
+    "FLIGHT_ID": "Flight route identifier for the catalog item being rendered",
     "VEHICLE_ID": "Vehicle listing identifier for the catalog item being rendered",
-    "VIDEO_CATEGORY": "IAB content category",
-    "VIDEO_DURATION": "Content duration in seconds",
-    "VIDEO_ID": "Content video identifier",
-    "VIDEO_TITLE": "Content video title",
-    "ZIP": "Postal code"
-  },
-  "title": "Universal Macro",
-  "type": "string"
+    "LISTING_ID": "Real estate listing identifier for the catalog item being rendered",
+    "STORE_ID": "Store location identifier for the catalog item being rendered",
+    "PROGRAM_ID": "Education program identifier for the catalog item being rendered",
+    "DESTINATION_ID": "Travel destination identifier for the catalog item being rendered",
+    "CREATIVE_VARIANT_ID": "Seller-assigned creative variant identifier, passed through at serve time",
+    "APP_ITEM_ID": "Mobile app identifier for the catalog item being rendered"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/update-frequency.json b/schemas/cache/enums/update-frequency.json
index c014e9925..6fbf1a13a 100644
--- a/schemas/cache/enums/update-frequency.json
+++ b/schemas/cache/enums/update-frequency.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Frequency",
   "description": "Frequency of product catalog updates",
+  "type": "string",
   "enum": [
     "realtime",
     "hourly",
     "daily",
     "weekly"
-  ],
-  "title": "Update Frequency",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/url-asset-type.json b/schemas/cache/enums/url-asset-type.json
index 3b7c8afc7..7dcd162e2 100644
--- a/schemas/cache/enums/url-asset-type.json
+++ b/schemas/cache/enums/url-asset-type.json
@@ -1,11 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "URL Asset Type",
   "description": "Types of URL assets for tracking and click-through purposes",
+  "type": "string",
   "enum": [
     "clickthrough",
     "tracker_pixel",
     "tracker_script"
-  ],
-  "title": "URL Asset Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/validation-mode.json b/schemas/cache/enums/validation-mode.json
index 55d728442..96abf6dab 100644
--- a/schemas/cache/enums/validation-mode.json
+++ b/schemas/cache/enums/validation-mode.json
@@ -1,10 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validation Mode",
   "description": "Creative validation strictness levels",
+  "type": "string",
   "enum": [
     "strict",
     "lenient"
-  ],
-  "title": "Validation Mode",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/vast-tracking-event.json b/schemas/cache/enums/vast-tracking-event.json
index 5e91e0b4f..c8a32ce88 100644
--- a/schemas/cache/enums/vast-tracking-event.json
+++ b/schemas/cache/enums/vast-tracking-event.json
@@ -1,24 +1,40 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "description": "Standard VAST tracking events for video ad playback and interaction",
+  "title": "VAST Tracking Event",
+  "description": "Tracking events for video ads. Includes IAB VAST 4.2 TrackingEvents, plus flattened representations of Impression, Error, VideoClicks, and ViewableImpression elements. fullscreen/exitFullscreen retained for VAST 2.x/3.x compatibility. measurableImpression is an AdCP extension for MRC measurability signals.",
+  "type": "string",
   "enum": [
+    "impression",
+    "creativeView",
+    "loaded",
     "start",
     "firstQuartile",
     "midpoint",
     "thirdQuartile",
     "complete",
-    "impression",
-    "click",
+    "mute",
+    "unmute",
     "pause",
     "resume",
+    "rewind",
     "skip",
-    "mute",
-    "unmute",
+    "playerExpand",
+    "playerCollapse",
     "fullscreen",
     "exitFullscreen",
-    "playerExpand",
-    "playerCollapse"
-  ],
-  "title": "VAST Tracking Event",
-  "type": "string"
+    "progress",
+    "notUsed",
+    "otherAdInteraction",
+    "interactiveStart",
+    "clickTracking",
+    "customClick",
+    "close",
+    "closeLinear",
+    "error",
+    "viewable",
+    "notViewable",
+    "viewUndetermined",
+    "measurableImpression",
+    "viewableImpression"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/vast-version.json b/schemas/cache/enums/vast-version.json
index 825c64457..9f0a84fbb 100644
--- a/schemas/cache/enums/vast-version.json
+++ b/schemas/cache/enums/vast-version.json
@@ -1,13 +1,13 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "VAST Version",
   "description": "Supported VAST (Video Ad Serving Template) specification versions",
+  "type": "string",
   "enum": [
     "2.0",
     "3.0",
     "4.0",
     "4.1",
     "4.2"
-  ],
-  "title": "VAST Version",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/wcag-level.json b/schemas/cache/enums/wcag-level.json
index 8b47b19da..cb3d923eb 100644
--- a/schemas/cache/enums/wcag-level.json
+++ b/schemas/cache/enums/wcag-level.json
@@ -1,6 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "WCAG Level",
   "description": "Web Content Accessibility Guidelines conformance level",
+  "type": "string",
   "enum": [
     "A",
     "AA",
@@ -10,7 +12,5 @@
     "A": "Minimum level of conformance. Addresses the most basic accessibility barriers.",
     "AA": "Addresses the most common barriers for disabled users. Required by most accessibility regulations.",
     "AAA": "Highest level of conformance. Addresses the widest range of accessibility barriers."
-  },
-  "title": "WCAG Level",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/webhook-response-type.json b/schemas/cache/enums/webhook-response-type.json
index 792c5f1dc..d93fcf3d5 100644
--- a/schemas/cache/enums/webhook-response-type.json
+++ b/schemas/cache/enums/webhook-response-type.json
@@ -1,12 +1,12 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Webhook Response Type",
   "description": "Expected response content type from webhook endpoints",
+  "type": "string",
   "enum": [
     "html",
     "json",
     "xml",
     "javascript"
-  ],
-  "title": "Webhook Response Type",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/webhook-security-method.json b/schemas/cache/enums/webhook-security-method.json
index 3762a1057..b3517e1b5 100644
--- a/schemas/cache/enums/webhook-security-method.json
+++ b/schemas/cache/enums/webhook-security-method.json
@@ -1,11 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Webhook Security Method",
   "description": "Security methods for authenticating webhook requests",
+  "type": "string",
   "enum": [
     "hmac_sha256",
     "api_key",
     "none"
-  ],
-  "title": "Webhook Security Method",
-  "type": "string"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/error-details/account-setup-required.json b/schemas/cache/error-details/account-setup-required.json
new file mode 100644
index 000000000..fe73a1454
--- /dev/null
+++ b/schemas/cache/error-details/account-setup-required.json
@@ -0,0 +1,21 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "ACCOUNT_SETUP_REQUIRED Details",
+  "description": "Recommended details shape for ACCOUNT_SETUP_REQUIRED errors. Provides setup URL and remaining steps.",
+  "type": "object",
+  "properties": {
+    "setup_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL where account setup can be completed"
+    },
+    "setup_steps": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Steps remaining before the account is ready"
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/error-details/audience-too-small.json b/schemas/cache/error-details/audience-too-small.json
new file mode 100644
index 000000000..90a86d43d
--- /dev/null
+++ b/schemas/cache/error-details/audience-too-small.json
@@ -0,0 +1,17 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "AUDIENCE_TOO_SMALL Details",
+  "description": "Recommended details shape for AUDIENCE_TOO_SMALL errors. Provides size thresholds so agents can broaden targeting.",
+  "type": "object",
+  "properties": {
+    "minimum_size": {
+      "type": "number",
+      "description": "Minimum audience size required"
+    },
+    "current_size": {
+      "type": "number",
+      "description": "Current audience size"
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/error-details/budget-too-low.json b/schemas/cache/error-details/budget-too-low.json
new file mode 100644
index 000000000..71a5cadd7
--- /dev/null
+++ b/schemas/cache/error-details/budget-too-low.json
@@ -0,0 +1,17 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "BUDGET_TOO_LOW Details",
+  "description": "Recommended details shape for BUDGET_TOO_LOW errors. Provides the seller's minimum budget so agents can adjust.",
+  "type": "object",
+  "properties": {
+    "minimum_budget": {
+      "type": "number",
+      "description": "Seller's minimum budget for this product"
+    },
+    "currency": {
+      "type": "string",
+      "description": "ISO 4217 currency code"
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/error-details/conflict.json b/schemas/cache/error-details/conflict.json
new file mode 100644
index 000000000..f76e11bbf
--- /dev/null
+++ b/schemas/cache/error-details/conflict.json
@@ -0,0 +1,27 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "CONFLICT Details",
+  "description": "Recommended details shape for CONFLICT errors. Provides version information so agents can re-read the resource and retry.",
+  "type": "object",
+  "properties": {
+    "resource_id": {
+      "type": "string",
+      "description": "Identifier of the conflicting resource"
+    },
+    "expected_version": {
+      "type": [
+        "number",
+        "string"
+      ],
+      "description": "Version or ETag the client was operating against"
+    },
+    "current_version": {
+      "type": [
+        "number",
+        "string"
+      ],
+      "description": "Current version or ETag on the server"
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/error-details/creative-rejected.json b/schemas/cache/error-details/creative-rejected.json
new file mode 100644
index 000000000..a34536609
--- /dev/null
+++ b/schemas/cache/error-details/creative-rejected.json
@@ -0,0 +1,25 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "CREATIVE_REJECTED Details",
+  "description": "Recommended details shape for CREATIVE_REJECTED errors. Provides policy reference and rejection reasons so agents can revise.",
+  "type": "object",
+  "properties": {
+    "policy_id": {
+      "type": "string",
+      "description": "Identifier for the violated policy"
+    },
+    "policy_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL where the full policy can be reviewed"
+    },
+    "reasons": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Specific reasons the creative was rejected"
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/error-details/policy-violation.json b/schemas/cache/error-details/policy-violation.json
new file mode 100644
index 000000000..8bae780c8
--- /dev/null
+++ b/schemas/cache/error-details/policy-violation.json
@@ -0,0 +1,25 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "POLICY_VIOLATION Details",
+  "description": "Recommended details shape for POLICY_VIOLATION errors. Provides policy reference and violated rules so agents can adjust requests.",
+  "type": "object",
+  "properties": {
+    "policy_id": {
+      "type": "string",
+      "description": "Identifier for the violated policy"
+    },
+    "policy_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL where the full policy can be reviewed"
+    },
+    "violated_rules": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Specific rules that were violated"
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/error-details/rate-limited.json b/schemas/cache/error-details/rate-limited.json
new file mode 100644
index 000000000..4dd08f56a
--- /dev/null
+++ b/schemas/cache/error-details/rate-limited.json
@@ -0,0 +1,30 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "RATE_LIMITED Details",
+  "description": "Recommended details shape for RATE_LIMITED errors. Provides rate limit window information so agents can plan request pacing.",
+  "type": "object",
+  "properties": {
+    "limit": {
+      "type": "number",
+      "description": "Maximum requests allowed in the window"
+    },
+    "remaining": {
+      "type": "number",
+      "description": "Requests remaining in the current window"
+    },
+    "window_seconds": {
+      "type": "number",
+      "description": "Duration of the rate-limit window in seconds"
+    },
+    "scope": {
+      "type": "string",
+      "enum": [
+        "account",
+        "tool",
+        "global"
+      ],
+      "description": "What the limit applies to"
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/error-details/vendor-error-codes.json b/schemas/cache/error-details/vendor-error-codes.json
new file mode 100644
index 000000000..7471369e7
--- /dev/null
+++ b/schemas/cache/error-details/vendor-error-codes.json
@@ -0,0 +1,54 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Vendor Error Code Registry",
+  "description": "Registry of vendor-prefixed error codes (X_{VENDOR}_{CODE}). Sellers register their vendor prefix and codes here to prevent collisions. Standard error codes are in error-code.json. To register a new vendor prefix, submit a PR adding your entry to the vendors object.",
+  "type": "object",
+  "properties": {
+    "vendors": {
+      "type": "object",
+      "description": "Map of vendor prefix to vendor metadata and codes",
+      "additionalProperties": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Full vendor name"
+          },
+          "url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Vendor website or documentation URL"
+          },
+          "codes": {
+            "type": "object",
+            "description": "Map of code suffix to description and recovery classification",
+            "additionalProperties": {
+              "type": "object",
+              "properties": {
+                "description": {
+                  "type": "string"
+                },
+                "recovery": {
+                  "type": "string",
+                  "enum": [
+                    "transient",
+                    "correctable",
+                    "terminal"
+                  ]
+                }
+              },
+              "required": [
+                "description",
+                "recovery"
+              ]
+            }
+          }
+        },
+        "required": [
+          "name",
+          "codes"
+        ]
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/extensions/extension-meta.json b/schemas/cache/extensions/extension-meta.json
index 26ae70f0f..0eb66b69d 100644
--- a/schemas/cache/extensions/extension-meta.json
+++ b/schemas/cache/extensions/extension-meta.json
@@ -1,52 +1,54 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "AdCP Extension File Schema",
   "description": "Schema that all extension files must follow. Combines metadata (valid_from, docs_url) with the actual extension data schema. Extensions are auto-discovered from /schemas/extensions/*.json and included in versioned builds based on valid_from/valid_until.",
+  "type": "object",
   "properties": {
     "$schema": {
-      "const": "http://json-schema.org/draft-07/schema#",
-      "type": "string"
+      "type": "string",
+      "const": "http://json-schema.org/draft-07/schema#"
     },
-    "additionalProperties": {
-      "description": "Whether additional properties are allowed in the extension data"
+    "title": {
+      "type": "string",
+      "description": "Human-readable title for the extension"
     },
     "description": {
-      "description": "Description of what this extension provides",
-      "type": "string"
+      "type": "string",
+      "description": "Description of what this extension provides"
+    },
+    "valid_from": {
+      "type": "string",
+      "pattern": "^\\d+\\.\\d+$",
+      "description": "Minimum AdCP version this extension is compatible with (e.g., '2.5'). Extension will be included in all versioned schema builds >= this version."
+    },
+    "valid_until": {
+      "type": "string",
+      "pattern": "^\\d+\\.\\d+$",
+      "description": "Last AdCP version this extension is compatible with (e.g., '3.0'). Omit if extension is still valid for current and future versions."
     },
     "docs_url": {
-      "description": "URL to documentation for implementors of this extension",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL to documentation for implementors of this extension"
+    },
+    "type": {
+      "const": "object",
+      "description": "Extensions must be objects (data within ext.{namespace})"
     },
     "properties": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Schema properties defining the structure of ext.{namespace} data",
-      "type": "object"
+      "additionalProperties": true
     },
     "required": {
-      "description": "Required properties within the extension data",
+      "type": "array",
       "items": {
         "type": "string"
       },
-      "type": "array"
+      "description": "Required properties within the extension data"
     },
-    "title": {
-      "description": "Human-readable title for the extension",
-      "type": "string"
-    },
-    "type": {
-      "const": "object",
-      "description": "Extensions must be objects (data within ext.{namespace})"
-    },
-    "valid_from": {
-      "description": "Minimum AdCP version this extension is compatible with (e.g., '2.5'). Extension will be included in all versioned schema builds >= this version.",
-      "pattern": "^\\d+\\.\\d+$",
-      "type": "string"
-    },
-    "valid_until": {
-      "description": "Last AdCP version this extension is compatible with (e.g., '3.0'). Omit if extension is still valid for current and future versions.",
-      "pattern": "^\\d+\\.\\d+$",
-      "type": "string"
+    "additionalProperties": {
+      "description": "Whether additional properties are allowed in the extension data"
     }
   },
   "required": [
@@ -57,7 +59,5 @@
     "valid_from",
     "type",
     "properties"
-  ],
-  "title": "AdCP Extension File Schema",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/extensions/index.json b/schemas/cache/extensions/index.json
index 54bdc261c..d1df72012 100644
--- a/schemas/cache/extensions/index.json
+++ b/schemas/cache/extensions/index.json
@@ -1,8 +1,8 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "_generated": true,
-  "_generatedAt": "2026-04-01T12:57:12.935Z",
+  "title": "AdCP Extension Registry",
   "description": "Auto-generated registry of formal AdCP extensions. Extensions provide typed schemas for vendor-specific or domain-specific data within the ext field. Agents declare which extensions they support in their agent card.",
-  "extensions": {},
-  "title": "AdCP Extension Registry"
+  "_generated": true,
+  "_generatedAt": "2026-04-18T19:54:51.159Z",
+  "extensions": {}
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/attribute-definition.json b/schemas/cache/governance/attribute-definition.json
new file mode 100644
index 000000000..10933327c
--- /dev/null
+++ b/schemas/cache/governance/attribute-definition.json
@@ -0,0 +1,81 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Attribute Definition",
+  "description": "Definition of a restricted personal data attribute in the policy registry. Attributes are the shared vocabulary used across campaign plans (restricted_attributes), signal definitions (restricted_attributes), and data marketplace catalogs. Each definition documents the regulatory basis, scope, and common signal patterns for the attribute category.",
+  "type": "object",
+  "properties": {
+    "attribute_id": {
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]*$",
+      "description": "Unique identifier for this attribute. Used in plan.restricted_attributes, signal-definition.restricted_attributes, and data marketplace catalog entries."
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name (e.g., 'Health Data')."
+    },
+    "description": {
+      "type": "string",
+      "description": "What this attribute category covers. Defines the boundary \u2014 what is and is not included."
+    },
+    "regulatory_basis": {
+      "type": "array",
+      "description": "Regulations that define or restrict this attribute category.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Name of the regulation (e.g., 'GDPR Article 9(1)')."
+          },
+          "jurisdictions": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "ISO 3166-1 alpha-2 codes where this regulation applies."
+          },
+          "summary": {
+            "type": "string",
+            "description": "How this regulation defines or restricts the attribute."
+          }
+        },
+        "required": [
+          "name",
+          "summary"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "includes": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Specific data types that fall within this category (e.g., for health_data: 'medical conditions', 'disability status', 'prescription history', 'inferred health from behavioral signals')."
+    },
+    "excludes": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Data types that might seem related but are explicitly outside this category. Helps with boundary cases."
+    },
+    "signal_patterns": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Common signal naming or tagging patterns that indicate this attribute (e.g., 'health:', 'condition_', 'diagnosis_'). Data providers and governance agents use these as hints when signals lack explicit restricted_attributes declarations."
+    },
+    "guidance": {
+      "type": "string",
+      "description": "Implementation notes. Covers edge cases, inferred vs. declared data, and common pitfalls."
+    }
+  },
+  "required": [
+    "attribute_id",
+    "name",
+    "description"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/governance/audience-constraints.json b/schemas/cache/governance/audience-constraints.json
index 6e46cf39b..7ff806e4b 100644
--- a/schemas/cache/governance/audience-constraints.json
+++ b/schemas/cache/governance/audience-constraints.json
@@ -1,26 +1,26 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Audience Constraints",
   "description": "Buyer-defined audience targeting constraints for a campaign plan. Specifies who the campaign should and should not reach. The governance agent evaluates seller targeting against these constraints during check_governance.",
-  "minProperties": 1,
+  "type": "object",
   "properties": {
-    "exclude": {
-      "description": "Excluded audience criteria. The seller's targeting must not overlap with these. Exclusions take precedence over inclusions. Used for protected groups, vulnerable communities, regulatory restrictions, or brand safety.",
+    "include": {
+      "type": "array",
+      "description": "Desired audience criteria. The seller's targeting should align with these. Each criterion is evaluated independently \u2014 the combined targeting should satisfy at least one inclusion criterion.",
       "items": {
         "$ref": "../core/audience-selector.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "include": {
-      "description": "Desired audience criteria. The seller's targeting should align with these. Each criterion is evaluated independently \u2014 the combined targeting should satisfy at least one inclusion criterion.",
+    "exclude": {
+      "type": "array",
+      "description": "Excluded audience criteria. The seller's targeting must not overlap with these. Exclusions take precedence over inclusions. Used for protected groups, vulnerable communities, regulatory restrictions, or brand safety.",
       "items": {
         "$ref": "../core/audience-selector.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     }
   },
-  "title": "Audience Constraints",
-  "type": "object"
+  "minProperties": 1,
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/check-governance-request.json b/schemas/cache/governance/check-governance-request.json
index a2ee58434..16437c93c 100644
--- a/schemas/cache/governance/check-governance-request.json
+++ b/schemas/cache/governance/check-governance-request.json
@@ -1,182 +1,195 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "description": "Universal governance check for campaign actions. The governance agent infers the check type from the fields present: tool+payload (intent check, orchestrator) or media_buy_id+planned_delivery (execution check, seller).",
+  "title": "Check Governance Request",
+  "description": "Universal governance check for campaign actions. The governance agent infers the check type from the fields present: tool+payload = intent check (proposed, orchestrator-side). planned_delivery = execution check (committed, seller-side). governance_context maintains lifecycle continuity across either check type \u2014 its presence alone does not determine binding. To check budget availability without a specific action, omit tool and payload.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "plan_id": {
+      "type": "string",
+      "description": "Campaign governance plan identifier."
+    },
     "caller": {
-      "description": "URL of the agent making the request.",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL of the agent making the request."
+    },
+    "purchase_type": {
+      "$ref": "../enums/purchase-type.json",
+      "description": "The type of financial commitment being checked. Determines which budget allocation (if any) to validate against. Defaults to 'media_buy' when omitted.",
+      "default": "media_buy"
+    },
+    "tool": {
+      "type": "string",
+      "description": "The AdCP tool being checked (e.g., 'create_media_buy', 'acquire_rights', 'activate_signal'). Present on intent checks (orchestrator). The governance agent uses the presence of tool+payload to identify an intent check."
+    },
+    "payload": {
+      "type": "object",
+      "description": "The full tool arguments as they would be sent to the seller. Present on intent checks. The governance agent can inspect any field to validate against the plan.",
+      "additionalProperties": true
+    },
+    "governance_context": {
+      "type": "string",
+      "description": "Governance context token from a prior check_governance response. Pass this on subsequent checks for the same governed action so the governance agent can maintain continuity across the lifecycle. In 3.0 governance agents MUST emit a compact JWS per the AdCP JWS profile (see Security \u2014 Signed Governance Context); callers persist and forward the value verbatim.",
+      "minLength": 1,
+      "maxLength": 4096,
+      "pattern": "^[\\x20-\\x7E]+$"
+    },
+    "phase": {
+      "$ref": "../enums/governance-phase.json",
+      "description": "The phase of the governed action's lifecycle. 'purchase': initial commitment (create_media_buy, acquire_rights, activate_signal). 'modification': update to existing commitment. 'delivery': periodic delivery or usage reporting. Defaults to 'purchase' if omitted.",
+      "default": "purchase"
+    },
+    "planned_delivery": {
+      "$ref": "../core/planned-delivery.json",
+      "description": "What the seller will actually deliver. Present on execution checks."
     },
     "delivery_metrics": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Actual delivery performance data. MUST be present for 'delivery' phase. The governance agent compares these metrics against the planned delivery to detect drift.",
       "properties": {
-        "audience_distribution": {
-          "additionalProperties": false,
-          "description": "Actual audience composition during the reporting period. Enables mid-flight drift detection when actual delivery skews from planned audience targeting.",
+        "reporting_period": {
+          "type": "object",
+          "description": "Start and end timestamps for the reporting window.",
           "properties": {
-            "baseline": {
-              "description": "Population baseline used for index calculation. 'census': national census or equivalent population data. 'platform': the seller's active user base. 'custom': a custom baseline defined by the seller (describe in baseline_description).",
-              "enum": [
-                "census",
-                "platform",
-                "custom"
-              ],
-              "type": "string"
-            },
-            "baseline_description": {
-              "description": "Description of the baseline when baseline is 'custom' (e.g., 'US adults 18+ with broadband access').",
-              "type": "string"
-            },
-            "cumulative_indices": {
-              "additionalProperties": {
-                "minimum": 0,
-                "type": "number"
-              },
-              "description": "Cumulative audience index values since the media buy started. Same key format as indices (dimension:value). Use for detecting sustained bias drift that may not appear in a single reporting period.",
-              "propertyNames": {
-                "pattern": "^[a-z_]+:.+$"
-              },
-              "type": "object"
+            "start": {
+              "type": "string",
+              "format": "date-time"
             },
-            "indices": {
-              "additionalProperties": {
-                "minimum": 0,
-                "type": "number"
-              },
-              "description": "Audience index values for the current reporting period. Keys are seller-defined dimension:value strings (e.g., 'age:25-34', 'gender:female', 'income:high'). The protocol does not mandate a taxonomy \u2014 dimensions and value labels vary by seller. Values are index relative to the declared baseline (1.0 = at parity, >1.0 = over-indexed, <1.0 = under-indexed).",
-              "propertyNames": {
-                "pattern": "^[a-z_]+:.+$"
-              },
-              "type": "object"
+            "end": {
+              "type": "string",
+              "format": "date-time"
             }
           },
           "required": [
-            "baseline",
-            "indices"
+            "start",
+            "end"
           ],
-          "type": "object"
-        },
-        "channel_distribution": {
-          "additionalProperties": {
-            "maximum": 100,
-            "minimum": 0,
-            "type": "number"
-          },
-          "description": "Actual channel distribution. Keys are channel enum values, values are percentages.",
-          "type": "object"
+          "additionalProperties": false
         },
-        "cumulative_impressions": {
-          "description": "Total impressions since the media buy started.",
+        "spend": {
+          "type": "number",
           "minimum": 0,
-          "type": "integer"
+          "description": "Total spend during the reporting period."
         },
         "cumulative_spend": {
-          "description": "Total spend since the media buy started.",
+          "type": "number",
+          "minimum": 0,
+          "description": "Total spend since the governed action started."
+        },
+        "impressions": {
+          "type": "integer",
           "minimum": 0,
-          "type": "number"
+          "description": "Impressions delivered during the reporting period."
+        },
+        "cumulative_impressions": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Total impressions since the governed action started."
         },
         "geo_distribution": {
+          "type": "object",
+          "description": "Actual geographic distribution. Keys are ISO 3166-1 alpha-2 codes, values are percentages.",
           "additionalProperties": {
-            "maximum": 100,
+            "type": "number",
             "minimum": 0,
-            "type": "number"
-          },
-          "description": "Actual geographic distribution. Keys are ISO 3166-1 alpha-2 codes, values are percentages.",
-          "type": "object"
+            "maximum": 100
+          }
         },
-        "impressions": {
-          "description": "Impressions delivered during the reporting period.",
-          "minimum": 0,
-          "type": "integer"
+        "channel_distribution": {
+          "type": "object",
+          "description": "Actual channel distribution. Keys are channel enum values, values are percentages.",
+          "additionalProperties": {
+            "type": "number",
+            "minimum": 0,
+            "maximum": 100
+          }
         },
         "pacing": {
-          "description": "Whether delivery is ahead of, on track with, or behind the planned pace.",
+          "type": "string",
           "enum": [
             "ahead",
             "on_track",
             "behind"
           ],
-          "type": "string"
+          "description": "Whether delivery is ahead of, on track with, or behind the planned pace."
         },
-        "reporting_period": {
-          "additionalProperties": false,
-          "description": "Start and end timestamps for the reporting window.",
+        "audience_distribution": {
+          "type": "object",
+          "description": "Actual audience composition during the reporting period. Enables mid-flight drift detection when actual delivery skews from planned audience targeting.",
           "properties": {
-            "end": {
-              "format": "date-time",
-              "type": "string"
+            "baseline": {
+              "type": "string",
+              "enum": [
+                "census",
+                "platform",
+                "custom"
+              ],
+              "description": "Population baseline used for index calculation. 'census': national census or equivalent population data. 'platform': the seller's active user base. 'custom': a custom baseline defined by the seller (describe in baseline_description)."
             },
-            "start": {
-              "format": "date-time",
-              "type": "string"
+            "baseline_description": {
+              "type": "string",
+              "description": "Description of the baseline when baseline is 'custom' (e.g., 'US adults 18+ with broadband access')."
+            },
+            "indices": {
+              "type": "object",
+              "description": "Audience index values for the current reporting period. Keys are seller-defined dimension:value strings (e.g., 'age:25-34', 'gender:female', 'income:high'). The protocol does not mandate a taxonomy \u2014 dimensions and value labels vary by seller. Values are index relative to the declared baseline (1.0 = at parity, >1.0 = over-indexed, <1.0 = under-indexed).",
+              "propertyNames": {
+                "pattern": "^[a-z_]+:.+$"
+              },
+              "additionalProperties": {
+                "type": "number",
+                "minimum": 0
+              }
+            },
+            "cumulative_indices": {
+              "type": "object",
+              "description": "Cumulative audience index values since the governed action started. Same key format as indices (dimension:value). Use for detecting sustained bias drift that may not appear in a single reporting period.",
+              "propertyNames": {
+                "pattern": "^[a-z_]+:.+$"
+              },
+              "additionalProperties": {
+                "type": "number",
+                "minimum": 0
+              }
             }
           },
           "required": [
-            "start",
-            "end"
+            "baseline",
+            "indices"
           ],
-          "type": "object"
-        },
-        "spend": {
-          "description": "Total spend during the reporting period.",
-          "minimum": 0,
-          "type": "number"
+          "additionalProperties": false
         }
       },
       "required": [
         "reporting_period"
       ],
-      "type": "object"
-    },
-    "governance_context": {
-      "description": "Opaque governance context from a prior check_governance response. Pass this on subsequent checks for the same media buy so the governance agent can maintain continuity across the lifecycle. Issued by the governance agent, never interpreted by callers.",
-      "maxLength": 4096,
-      "minLength": 1,
-      "pattern": "^[\\x20-\\x7E]+$",
-      "type": "string"
-    },
-    "invoice_recipient": {
-      "$ref": "../core/business-entity.json",
-      "description": "Per-buy invoice recipient from create_media_buy or update_media_buy. MUST be present when the tool payload includes invoice_recipient, so the governance agent can validate billing changes."
-    },
-    "media_buy_id": {
-      "description": "The seller's identifier for the media buy. Present on execution checks (seller). The governance agent uses the presence of media_buy_id+planned_delivery to identify an execution check.",
-      "type": "string"
+      "additionalProperties": false
     },
     "modification_summary": {
+      "type": "string",
       "description": "Human-readable summary of what changed. SHOULD be present for 'modification' phase.",
-      "maxLength": 1000,
-      "type": "string"
-    },
-    "payload": {
-      "additionalProperties": true,
-      "description": "The full tool arguments as they would be sent to the seller. Present on intent checks. The governance agent can inspect any field to validate against the plan.",
-      "type": "object"
-    },
-    "phase": {
-      "$ref": "../enums/governance-phase.json",
-      "default": "purchase",
-      "description": "The phase of the media buy lifecycle. 'purchase': initial create_media_buy. 'modification': update_media_buy. 'delivery': periodic delivery reporting. Defaults to 'purchase' if omitted."
+      "maxLength": 1000
     },
-    "plan_id": {
-      "description": "Campaign governance plan identifier.",
-      "type": "string"
+    "invoice_recipient": {
+      "$ref": "../core/business-entity.json",
+      "description": "Invoice recipient from the purchase request. MUST be present when the tool payload includes invoice_recipient, so the governance agent can validate billing changes."
     },
-    "planned_delivery": {
-      "$ref": "../core/planned-delivery.json",
-      "description": "What the seller will actually deliver. Present on execution checks."
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "tool": {
-      "description": "The AdCP tool being checked (e.g., 'create_media_buy', 'get_products'). Present on intent checks (orchestrator). The governance agent uses the presence of tool+payload to identify an intent check.",
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "plan_id",
     "caller"
   ],
-  "title": "Check Governance Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/check-governance-response.json b/schemas/cache/governance/check-governance-response.json
index e95af34ae..f35c13bff 100644
--- a/schemas/cache/governance/check-governance-response.json
+++ b/schemas/cache/governance/check-governance-response.json
@@ -1,87 +1,69 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "description": "Governance agent's response to a check request. Returns whether the action is approved under the campaign plan.",
+  "title": "Check Governance Response",
+  "description": "Governance agent's response to a check request. Returns whether the action is approved under the governance plan.",
+  "type": "object",
   "properties": {
-    "categories_evaluated": {
-      "description": "Governance categories evaluated during this check.",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
     "check_id": {
-      "description": "Unique identifier for this governance check record. Use in report_plan_outcome to link outcomes to the check that authorized them.",
-      "type": "string"
+      "type": "string",
+      "description": "Unique identifier for this governance check record. Use in report_plan_outcome to link outcomes to the check that authorized them."
     },
-    "conditions": {
-      "description": "Present when status is 'conditions'. Specific adjustments the caller must make. After applying conditions, the caller MUST re-call check_governance with the adjusted parameters before proceeding.",
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "field": {
-            "description": "Dot-path to the field that needs adjustment (in payload for proposed, in planned_delivery for committed).",
-            "type": "string"
-          },
-          "reason": {
-            "description": "Why this condition is required.",
-            "type": "string"
-          },
-          "required_value": {
-            "description": "The value the field must have for approval. When present, the condition is machine-actionable. When absent, the condition is advisory."
-          }
-        },
-        "required": [
-          "field",
-          "reason"
-        ],
-        "type": "object"
-      },
-      "type": "array"
+    "status": {
+      "type": "string",
+      "enum": [
+        "approved",
+        "denied",
+        "conditions"
+      ],
+      "description": "Governance decision. 'approved': proceed as planned. 'denied': do not proceed. 'conditions': approved if the caller accepts the listed conditions, then re-calls check_governance with the adjusted parameters."
     },
-    "expires_at": {
-      "description": "When this approval expires. Present when status is 'approved' or 'conditions'. The caller must act before this time or re-call check_governance. A lapsed approval is no approval.",
-      "format": "date-time",
-      "type": "string"
+    "plan_id": {
+      "type": "string",
+      "description": "Echoed from request."
     },
     "explanation": {
-      "description": "Human-readable explanation of the governance decision.",
-      "type": "string"
+      "type": "string",
+      "description": "Human-readable explanation of the governance decision."
     },
     "findings": {
+      "type": "array",
       "description": "Specific issues found during the governance check. Present when status is 'denied' or 'conditions'. MAY also be present on 'approved' for informational findings (e.g., budget approaching limit).",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "category_id": {
-            "description": "Validation category that flagged the issue (e.g., 'budget_compliance', 'regulatory_compliance', 'brand_safety').",
-            "type": "string"
+            "type": "string",
+            "description": "Validation category that flagged the issue (e.g., 'budget_compliance', 'regulatory_compliance', 'brand_safety')."
           },
-          "confidence": {
-            "description": "Confidence score (0-1) in this finding. Distinguishes 'this definitely violates the policy' (0.95) from 'this might violate depending on how audience segments resolve' (0.6). When absent, the finding is presented without a confidence qualifier.",
-            "maximum": 1,
-            "minimum": 0,
-            "type": "number"
+          "policy_id": {
+            "type": "string",
+            "description": "ID of the policy that triggered this finding. May reference a registry policy (with source: registry) or a bespoke inline policy (with source: inline). Bespoke policy_ids are unique within their authoring container; use source_plan_id when findings aggregate across multiple plans (e.g., portfolio evaluations)."
           },
-          "details": {
-            "additionalProperties": true,
-            "description": "Structured details for programmatic consumption.",
-            "type": "object"
+          "source_plan_id": {
+            "type": "string",
+            "description": "For portfolio or aggregated evaluations where findings draw on bespoke policies from multiple member plans: identifies the plan whose policy triggered this finding. Omit when the finding's policy_id is unambiguous within the response context (e.g., single-plan check_governance)."
+          },
+          "severity": {
+            "$ref": "../enums/escalation-severity.json"
           },
           "explanation": {
-            "description": "Human-readable description of the issue.",
-            "type": "string"
+            "type": "string",
+            "description": "Human-readable description of the issue."
           },
-          "policy_id": {
-            "description": "Registry policy ID that triggered this finding. Present when the finding originates from a specific registry policy. Enables programmatic routing of compliance failures.",
-            "type": "string"
+          "details": {
+            "type": "object",
+            "description": "Structured details for programmatic consumption.",
+            "additionalProperties": true
           },
-          "severity": {
-            "$ref": "../enums/escalation-severity.json"
+          "confidence": {
+            "type": "number",
+            "minimum": 0,
+            "maximum": 1,
+            "description": "Confidence score (0-1) in this finding. Distinguishes 'this definitely violates the policy' (0.95) from 'this might violate depending on how audience segments resolve' (0.6). When absent, the finding is presented without a confidence qualifier."
           },
           "uncertainty_reason": {
-            "description": "Explanation of why confidence is below 1.0 (e.g., 'Targeting includes regions that partially overlap jurisdiction boundaries'). Present when confidence is below a governance-agent-defined threshold.",
-            "type": "string"
+            "type": "string",
+            "description": "Explanation of why confidence is below 1.0 (e.g., 'Targeting includes regions that partially overlap jurisdiction boundaries'). Present when confidence is below a governance-agent-defined threshold."
           }
         },
         "required": [
@@ -89,41 +71,70 @@
           "severity",
           "explanation"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": false
+      }
     },
-    "governance_context": {
-      "description": "Opaque governance context for this media buy. The buyer MUST attach this to the protocol envelope when sending the media buy to the seller. The seller MUST persist it and include it on all subsequent check_governance calls for this media buy's lifecycle. Only the issuing governance agent interprets this value.",
-      "maxLength": 4096,
-      "minLength": 1,
-      "pattern": "^[\\x20-\\x7E]+$",
-      "type": "string"
+    "conditions": {
+      "type": "array",
+      "description": "Present when status is 'conditions'. Specific adjustments the caller must make. After applying conditions, the caller MUST re-call check_governance with the adjusted parameters before proceeding.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "field": {
+            "type": "string",
+            "description": "Dot-path to the field that needs adjustment (in payload for proposed, in planned_delivery for committed)."
+          },
+          "required_value": {
+            "description": "The value the field must have for approval. When present, the condition is machine-actionable. When absent, the condition is advisory."
+          },
+          "reason": {
+            "type": "string",
+            "description": "Why this condition is required."
+          }
+        },
+        "required": [
+          "field",
+          "reason"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "expires_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this approval expires. Present when status is 'approved' or 'conditions'. The caller must act before this time or re-call check_governance. A lapsed approval is no approval."
     },
     "next_check": {
-      "description": "When the seller should next call check_governance with delivery metrics. Present when the governance agent expects ongoing delivery reporting.",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When the seller should next call check_governance with delivery metrics. Present when the governance agent expects ongoing delivery reporting."
     },
-    "plan_id": {
-      "description": "Echoed from request.",
-      "type": "string"
+    "categories_evaluated": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Governance categories evaluated during this check."
     },
     "policies_evaluated": {
-      "description": "Registry policy IDs evaluated during this check.",
+      "type": "array",
       "items": {
         "type": "string"
       },
-      "type": "array"
+      "description": "Registry policy IDs evaluated during this check."
     },
-    "status": {
-      "description": "Governance decision. 'approved': proceed as planned. 'denied': do not proceed. 'conditions': approved if the caller accepts the listed conditions, then re-calls check_governance with the adjusted parameters.",
-      "enum": [
-        "approved",
-        "denied",
-        "conditions"
-      ],
-      "type": "string"
+    "governance_context": {
+      "type": "string",
+      "description": "Governance context token for this governed action. The buyer MUST attach this to the protocol envelope when sending the purchase request (media buy, rights acquisition, signal activation) to the seller. The seller MUST persist it and include it on all subsequent check_governance calls for this action's lifecycle.\n\nValue format: in 3.0 governance agents MUST emit a compact JWS per the AdCP JWS profile (see Security \u2014 Signed Governance Context). Sellers MAY verify; sellers that do not verify MUST persist and forward the token unchanged so auditors can verify downstream. In 3.1 all sellers MUST verify per the checklist. Non-JWS values from pre-3.0 governance agents are deprecated and will be rejected in 3.1.\n\nSellers that implement verification MUST verify signature, `aud`, `exp`, `jti` replay, and revocation per the profile before treating the request as governance-approved. This is the primary correlation key for audit and reporting across the governance lifecycle \u2014 the governance agent decodes its own signed token to look up internal plan state (buyer correlation IDs, policy decision log, etc.).",
+      "minLength": 1,
+      "maxLength": 4096,
+      "pattern": "^[\\x20-\\x7E]+$"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -132,6 +143,5 @@
     "plan_id",
     "explanation"
   ],
-  "title": "Check Governance Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/get-plan-audit-logs-request.json b/schemas/cache/governance/get-plan-audit-logs-request.json
index dd929787b..02119b669 100644
--- a/schemas/cache/governance/get-plan-audit-logs-request.json
+++ b/schemas/cache/governance/get-plan-audit-logs-request.json
@@ -1,42 +1,75 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "anyOf": [
-    {
-      "required": [
-        "plan_ids"
-      ]
-    },
-    {
-      "required": [
-        "portfolio_plan_ids"
-      ]
-    }
-  ],
+  "title": "Get Plan Audit Logs Request",
   "description": "Retrieve governance state and audit trail for one or more plans.",
+  "type": "object",
   "properties": {
-    "include_entries": {
-      "default": false,
-      "description": "Include the full audit trail. Default: false.",
-      "type": "boolean"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "plan_ids": {
-      "description": "Plan IDs to retrieve. For a single plan, pass a one-element array.",
+      "type": "array",
       "items": {
         "type": "string"
       },
       "minItems": 1,
-      "type": "array"
+      "description": "Plan IDs to retrieve. For a single plan, pass a one-element array."
     },
     "portfolio_plan_ids": {
-      "description": "Portfolio plan IDs. The governance agent expands each to its member_plan_ids and returns combined audit data.",
+      "type": "array",
       "items": {
         "type": "string"
       },
       "minItems": 1,
-      "type": "array"
+      "description": "Portfolio plan IDs. The governance agent expands each to its member_plan_ids and returns combined audit data."
+    },
+    "governance_contexts": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "description": "Filter audit entries by governance context. Returns only checks and outcomes that share these governance contexts, enabling lifecycle tracing across purchase types."
+    },
+    "purchase_types": {
+      "type": "array",
+      "items": {
+        "$ref": "../enums/purchase-type.json"
+      },
+      "minItems": 1,
+      "description": "Filter audit entries by purchase type. Returns only checks and outcomes matching these purchase types (e.g., ['rights_license'] to see all rights activity)."
+    },
+    "include_entries": {
+      "type": "boolean",
+      "description": "Include the full audit trail. Default: false.",
+      "default": false
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Plan Audit Logs Request",
-  "type": "object"
+  "anyOf": [
+    {
+      "required": [
+        "plan_ids"
+      ]
+    },
+    {
+      "required": [
+        "portfolio_plan_ids"
+      ]
+    },
+    {
+      "required": [
+        "governance_contexts"
+      ]
+    }
+  ],
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/get-plan-audit-logs-response.json b/schemas/cache/governance/get-plan-audit-logs-response.json
index ea09bc741..1b89105db 100644
--- a/schemas/cache/governance/get-plan-audit-logs-response.json
+++ b/schemas/cache/governance/get-plan-audit-logs-response.json
@@ -1,108 +1,307 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Get Plan Audit Logs Response",
   "description": "Governance state and audit trail for one or more plans.",
+  "type": "object",
   "properties": {
     "plans": {
+      "type": "array",
       "description": "Audit data for each requested plan.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
+          "plan_id": {
+            "type": "string",
+            "description": "Plan identifier."
+          },
+          "plan_version": {
+            "type": "integer",
+            "description": "Current plan version."
+          },
+          "status": {
+            "type": "string",
+            "enum": [
+              "active",
+              "suspended",
+              "completed"
+            ],
+            "description": "Plan lifecycle status."
+          },
           "budget": {
-            "additionalProperties": false,
+            "type": "object",
             "description": "Budget state.",
             "properties": {
               "authorized": {
-                "description": "Total authorized budget from the plan.",
-                "type": "number"
+                "type": "number",
+                "description": "Total authorized budget from the plan."
               },
               "committed": {
-                "description": "Total budget committed from confirmed outcomes.",
-                "type": "number"
+                "type": "number",
+                "description": "Total budget committed from confirmed outcomes."
               },
               "remaining": {
-                "description": "Authorized minus committed.",
-                "type": "number"
+                "type": "number",
+                "description": "Authorized minus committed."
               },
               "utilization_pct": {
-                "description": "Committed as a percentage of authorized.",
-                "type": "number"
+                "type": "number",
+                "description": "Committed as a percentage of authorized."
               }
             },
-            "type": "object"
+            "additionalProperties": false
           },
           "channel_allocation": {
+            "type": "object",
+            "description": "Current channel mix. Keyed by channel ID.",
             "additionalProperties": {
-              "additionalProperties": false,
+              "type": "object",
               "properties": {
                 "committed": {
-                  "description": "Budget committed to this channel.",
-                  "type": "number"
+                  "type": "number",
+                  "description": "Budget committed to this channel."
                 },
                 "pct": {
-                  "description": "Channel's share of the authorized total budget.",
-                  "type": "number"
+                  "type": "number",
+                  "description": "Channel's share of the authorized total budget."
+                }
+              },
+              "additionalProperties": false
+            }
+          },
+          "summary": {
+            "type": "object",
+            "description": "Aggregate validation and outcome statistics.",
+            "properties": {
+              "checks_performed": {
+                "type": "integer",
+                "description": "Total governance checks performed."
+              },
+              "outcomes_reported": {
+                "type": "integer",
+                "description": "Total outcomes reported."
+              },
+              "statuses": {
+                "type": "object",
+                "description": "Count of each governance check status.",
+                "properties": {
+                  "approved": {
+                    "type": "integer"
+                  },
+                  "denied": {
+                    "type": "integer"
+                  },
+                  "conditions": {
+                    "type": "integer"
+                  },
+                  "human_reviewed": {
+                    "type": "integer",
+                    "description": "Supplementary count of checks that went through internal human review. These checks are also counted in approved or denied."
+                  }
+                },
+                "additionalProperties": false
+              },
+              "findings_count": {
+                "type": "integer",
+                "description": "Total findings across all checks and outcomes."
+              },
+              "escalations": {
+                "type": "array",
+                "description": "All escalations and their resolutions.",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "check_id": {
+                      "type": "string",
+                      "description": "The escalated governance check."
+                    },
+                    "reason": {
+                      "type": "string",
+                      "description": "Why it was escalated."
+                    },
+                    "resolution": {
+                      "type": "string",
+                      "description": "How it was resolved (e.g., 'approved_by_human', 'rejected_by_human')."
+                    },
+                    "resolved_at": {
+                      "type": "string",
+                      "format": "date-time",
+                      "description": "ISO 8601 resolution timestamp."
+                    }
+                  },
+                  "required": [
+                    "check_id",
+                    "reason"
+                  ],
+                  "additionalProperties": false
                 }
               },
-              "type": "object"
+              "drift_metrics": {
+                "type": "object",
+                "description": "Aggregate governance metrics for detecting oversight drift. A declining escalation rate may indicate well-calibrated governance or eroding human oversight -- surfacing the trend lets the organization make that judgment.",
+                "properties": {
+                  "escalation_rate": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Fraction of checks that resulted in escalation."
+                  },
+                  "escalation_rate_trend": {
+                    "type": "string",
+                    "enum": [
+                      "increasing",
+                      "stable",
+                      "declining"
+                    ],
+                    "description": "Direction of escalation rate over the plan's lifetime."
+                  },
+                  "auto_approval_rate": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Fraction of checks approved without human intervention."
+                  },
+                  "human_override_rate": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Fraction of escalations where the human overrode the governance agent's recommendation."
+                  },
+                  "mean_confidence": {
+                    "type": "number",
+                    "minimum": 0,
+                    "maximum": 1,
+                    "description": "Average confidence score across all findings. Present when findings include confidence scores."
+                  },
+                  "thresholds": {
+                    "type": "object",
+                    "description": "Organization-defined thresholds for drift metrics. When a metric crosses its threshold, the governance agent SHOULD include a finding on the next check. Set by the organization in governance agent configuration, echoed here for visibility.",
+                    "properties": {
+                      "escalation_rate_max": {
+                        "type": "number",
+                        "minimum": 0,
+                        "maximum": 1,
+                        "description": "Maximum acceptable escalation rate. A rate above this suggests policy miscalibration."
+                      },
+                      "escalation_rate_min": {
+                        "type": "number",
+                        "minimum": 0,
+                        "maximum": 1,
+                        "description": "Minimum acceptable escalation rate. A rate below this may indicate eroding oversight."
+                      },
+                      "auto_approval_rate_max": {
+                        "type": "number",
+                        "minimum": 0,
+                        "maximum": 1,
+                        "description": "Maximum acceptable auto-approval rate."
+                      },
+                      "human_override_rate_max": {
+                        "type": "number",
+                        "minimum": 0,
+                        "maximum": 1,
+                        "description": "Maximum acceptable human override rate. A high rate suggests the governance agent's recommendations are poorly calibrated."
+                      }
+                    },
+                    "additionalProperties": false
+                  }
+                },
+                "additionalProperties": false
+              }
             },
-            "description": "Current channel mix. Keyed by channel ID.",
-            "type": "object"
+            "additionalProperties": false
           },
           "entries": {
+            "type": "array",
             "description": "Ordered audit trail. Only present when include_entries is true.",
             "items": {
-              "additionalProperties": false,
+              "type": "object",
               "properties": {
+                "id": {
+                  "type": "string",
+                  "description": "Entry identifier."
+                },
+                "type": {
+                  "type": "string",
+                  "enum": [
+                    "check",
+                    "outcome"
+                  ],
+                  "description": "Entry type."
+                },
+                "timestamp": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "ISO 8601 timestamp."
+                },
+                "plan_id": {
+                  "type": "string",
+                  "description": "Plan this entry belongs to. Present when querying multiple plans or a portfolio."
+                },
                 "caller": {
-                  "description": "URL of the agent that made the request. Resolved from the credentials used on the governance callback.",
+                  "type": "string",
                   "format": "uri",
-                  "type": "string"
+                  "description": "URL of the agent that made the request. Resolved from the credentials used on the governance callback."
                 },
-                "categories_evaluated": {
-                  "description": "Governance categories evaluated (e.g., 'budget_authority', 'regulatory_compliance'). Present for check entries.",
-                  "items": {
-                    "type": "string"
-                  },
-                  "type": "array"
+                "tool": {
+                  "type": "string",
+                  "description": "The AdCP tool (present for check entries)."
+                },
+                "status": {
+                  "type": "string",
+                  "enum": [
+                    "approved",
+                    "denied",
+                    "conditions"
+                  ],
+                  "description": "Governance check status (present for check entries)."
                 },
                 "check_type": {
-                  "description": "Whether the check was an intent check (orchestrator) or execution check (seller). Inferred from the fields present on the original check request. Present for check entries.",
+                  "type": "string",
                   "enum": [
                     "intent",
                     "execution"
                   ],
-                  "type": "string"
-                },
-                "committed_budget": {
-                  "description": "Budget committed (present for completed outcome entries).",
-                  "type": "number"
+                  "description": "Whether the check was an intent check (orchestrator) or execution check (seller). Inferred from the fields present on the original check request. Present for check entries."
                 },
                 "explanation": {
-                  "description": "Human-readable explanation of the governance decision (present for check entries).",
-                  "type": "string"
+                  "type": "string",
+                  "description": "Human-readable explanation of the governance decision (present for check entries)."
+                },
+                "policies_evaluated": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  },
+                  "description": "Registry policy IDs evaluated during this check (present for check entries)."
+                },
+                "categories_evaluated": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  },
+                  "description": "Governance categories evaluated (e.g., 'budget_authority', 'regulatory_compliance'). Present for check entries."
                 },
                 "findings": {
+                  "type": "array",
                   "description": "Findings from this check or outcome. Same structure as check_governance response findings.",
                   "items": {
-                    "additionalProperties": false,
+                    "type": "object",
                     "properties": {
                       "category_id": {
                         "type": "string"
                       },
-                      "confidence": {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "explanation": {
-                        "type": "string"
-                      },
                       "policy_id": {
                         "type": "string"
                       },
                       "severity": {
                         "$ref": "../enums/escalation-severity.json"
+                      },
+                      "explanation": {
+                        "type": "string"
+                      },
+                      "confidence": {
+                        "type": "number",
+                        "minimum": 0,
+                        "maximum": 1
                       }
                     },
                     "required": [
@@ -110,62 +309,28 @@
                       "severity",
                       "explanation"
                     ],
-                    "type": "object"
-                  },
-                  "type": "array"
-                },
-                "id": {
-                  "description": "Entry identifier.",
-                  "type": "string"
-                },
-                "media_buy_id": {
-                  "description": "Media buy ID (present for delivery outcome entries).",
-                  "type": "string"
+                    "additionalProperties": false
+                  }
                 },
                 "outcome": {
                   "$ref": "../enums/outcome-type.json",
                   "description": "Outcome type (present for outcome entries)."
                 },
-                "outcome_status": {
-                  "description": "Outcome status (present for outcome entries).",
-                  "type": "string"
-                },
-                "plan_id": {
-                  "description": "Plan this entry belongs to. Present when querying multiple plans or a portfolio.",
-                  "type": "string"
-                },
-                "policies_evaluated": {
-                  "description": "Registry policy IDs evaluated during this check (present for check entries).",
-                  "items": {
-                    "type": "string"
-                  },
-                  "type": "array"
-                },
-                "status": {
-                  "description": "Governance check status (present for check entries).",
-                  "enum": [
-                    "approved",
-                    "denied",
-                    "conditions"
-                  ],
-                  "type": "string"
+                "committed_budget": {
+                  "type": "number",
+                  "description": "Budget committed (present for completed outcome entries)."
                 },
-                "timestamp": {
-                  "description": "ISO 8601 timestamp.",
-                  "format": "date-time",
-                  "type": "string"
+                "governance_context": {
+                  "type": "string",
+                  "description": "Governance context for this entry (present for check and outcome entries)."
                 },
-                "tool": {
-                  "description": "The AdCP tool (present for check entries).",
-                  "type": "string"
+                "purchase_type": {
+                  "$ref": "../enums/purchase-type.json",
+                  "description": "Purchase type for this entry."
                 },
-                "type": {
-                  "description": "Entry type.",
-                  "enum": [
-                    "check",
-                    "outcome"
-                  ],
-                  "type": "string"
+                "outcome_status": {
+                  "type": "string",
+                  "description": "Outcome status (present for outcome entries)."
                 }
               },
               "required": [
@@ -173,203 +338,54 @@
                 "type",
                 "timestamp"
               ],
-              "type": "object"
-            },
-            "type": "array"
+              "additionalProperties": false
+            }
           },
-          "media_buys": {
-            "description": "Per-media-buy breakdown.",
+          "governed_actions": {
+            "type": "array",
+            "description": "Per-action breakdown grouped by governance context.",
             "items": {
-              "additionalProperties": false,
+              "type": "object",
               "properties": {
-                "check_count": {
-                  "description": "Number of governance checks performed for this media buy.",
-                  "type": "integer"
-                },
-                "committed": {
-                  "description": "Budget committed for this media buy.",
-                  "type": "number"
+                "governance_context": {
+                  "type": "string",
+                  "description": "Governance context correlating this action's lifecycle."
                 },
-                "media_buy_id": {
-                  "description": "Seller-assigned media buy identifier.",
-                  "type": "string"
+                "purchase_type": {
+                  "$ref": "../enums/purchase-type.json",
+                  "description": "Type of financial commitment."
                 },
                 "status": {
-                  "description": "Media buy status.",
+                  "type": "string",
                   "enum": [
                     "active",
                     "suspended",
                     "completed"
                   ],
-                  "type": "string"
+                  "description": "Action status."
+                },
+                "committed": {
+                  "type": "number",
+                  "description": "Budget committed for this action."
+                },
+                "check_count": {
+                  "type": "integer",
+                  "description": "Number of governance checks performed for this action."
+                },
+                "seller_reference": {
+                  "type": "string",
+                  "description": "The seller's identifier for the resource (e.g., media_buy_id, rights_grant_id). Present when reported via report_plan_outcome."
                 }
               },
               "required": [
-                "media_buy_id",
+                "governance_context",
+                "purchase_type",
                 "status",
-                "committed"
+                "committed",
+                "check_count"
               ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "plan_id": {
-            "description": "Plan identifier.",
-            "type": "string"
-          },
-          "plan_version": {
-            "description": "Current plan version.",
-            "type": "integer"
-          },
-          "status": {
-            "description": "Plan lifecycle status.",
-            "enum": [
-              "active",
-              "suspended",
-              "completed"
-            ],
-            "type": "string"
-          },
-          "summary": {
-            "additionalProperties": false,
-            "description": "Aggregate validation and outcome statistics.",
-            "properties": {
-              "checks_performed": {
-                "description": "Total governance checks performed.",
-                "type": "integer"
-              },
-              "drift_metrics": {
-                "additionalProperties": false,
-                "description": "Aggregate governance metrics for detecting oversight drift. A declining escalation rate may indicate well-calibrated governance or eroding human oversight -- surfacing the trend lets the organization make that judgment.",
-                "properties": {
-                  "auto_approval_rate": {
-                    "description": "Fraction of checks approved without human intervention.",
-                    "maximum": 1,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "escalation_rate": {
-                    "description": "Fraction of checks that resulted in escalation.",
-                    "maximum": 1,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "escalation_rate_trend": {
-                    "description": "Direction of escalation rate over the plan's lifetime.",
-                    "enum": [
-                      "increasing",
-                      "stable",
-                      "declining"
-                    ],
-                    "type": "string"
-                  },
-                  "human_override_rate": {
-                    "description": "Fraction of escalations where the human overrode the governance agent's recommendation.",
-                    "maximum": 1,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "mean_confidence": {
-                    "description": "Average confidence score across all findings. Present when findings include confidence scores.",
-                    "maximum": 1,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "thresholds": {
-                    "additionalProperties": false,
-                    "description": "Organization-defined thresholds for drift metrics. When a metric crosses its threshold, the governance agent SHOULD include a finding on the next check. Set by the organization in governance agent configuration, echoed here for visibility.",
-                    "properties": {
-                      "auto_approval_rate_max": {
-                        "description": "Maximum acceptable auto-approval rate.",
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "escalation_rate_max": {
-                        "description": "Maximum acceptable escalation rate. A rate above this suggests policy miscalibration.",
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "escalation_rate_min": {
-                        "description": "Minimum acceptable escalation rate. A rate below this may indicate eroding oversight.",
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "human_override_rate_max": {
-                        "description": "Maximum acceptable human override rate. A high rate suggests the governance agent's recommendations are poorly calibrated.",
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      }
-                    },
-                    "type": "object"
-                  }
-                },
-                "type": "object"
-              },
-              "escalations": {
-                "description": "All escalations and their resolutions.",
-                "items": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "check_id": {
-                      "description": "The escalated governance check.",
-                      "type": "string"
-                    },
-                    "reason": {
-                      "description": "Why it was escalated.",
-                      "type": "string"
-                    },
-                    "resolution": {
-                      "description": "How it was resolved (e.g., 'approved_by_human', 'rejected_by_human').",
-                      "type": "string"
-                    },
-                    "resolved_at": {
-                      "description": "ISO 8601 resolution timestamp.",
-                      "format": "date-time",
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "check_id",
-                    "reason"
-                  ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "findings_count": {
-                "description": "Total findings across all checks and outcomes.",
-                "type": "integer"
-              },
-              "outcomes_reported": {
-                "description": "Total outcomes reported.",
-                "type": "integer"
-              },
-              "statuses": {
-                "additionalProperties": false,
-                "description": "Count of each governance check status.",
-                "properties": {
-                  "approved": {
-                    "type": "integer"
-                  },
-                  "conditions": {
-                    "type": "integer"
-                  },
-                  "denied": {
-                    "type": "integer"
-                  },
-                  "human_reviewed": {
-                    "description": "Supplementary count of checks that went through internal human review. These checks are also counted in approved or denied.",
-                    "type": "integer"
-                  }
-                },
-                "type": "object"
-              }
-            },
-            "type": "object"
+              "additionalProperties": false
+            }
           }
         },
         "required": [
@@ -377,17 +393,21 @@
           "plan_version",
           "status",
           "budget",
-          "media_buys",
+          "governed_actions",
           "summary"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": false
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "plans"
   ],
-  "title": "Get Plan Audit Logs Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/policy-category-definition.json b/schemas/cache/governance/policy-category-definition.json
new file mode 100644
index 000000000..a60fa7388
--- /dev/null
+++ b/schemas/cache/governance/policy-category-definition.json
@@ -0,0 +1,88 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Policy Category Definition",
+  "description": "Definition of a policy category in the registry. Policy categories group related regulatory regimes (e.g., 'children_directed' groups COPPA, UK AADC, GDPR Article 8). Used on campaign plans (plan.policy_categories), signal definitions (signal-definition.policy_categories), and policy entries (policy-entry.policy_categories) to connect campaigns and data to the right regulatory frameworks.",
+  "type": "object",
+  "properties": {
+    "category_id": {
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]*$",
+      "description": "Unique identifier for this category. Used in plan.policy_categories, signal-definition.policy_categories, and policy-entry.policy_categories."
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name (e.g., 'Children-Directed Content')."
+    },
+    "description": {
+      "type": "string",
+      "description": "What this category covers. Defines the boundary \u2014 what campaigns or data fall under this category."
+    },
+    "regulatory_frameworks": {
+      "type": "array",
+      "description": "Key regulations and standards grouped under this category. Governance agents use this to resolve specific policies from the registry.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Name of the regulation or standard (e.g., 'US COPPA')."
+          },
+          "jurisdictions": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "ISO 3166-1 alpha-2 codes where this framework applies."
+          },
+          "summary": {
+            "type": "string",
+            "description": "Brief summary of what the framework requires or prohibits."
+          },
+          "policy_ids": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "Registry policy IDs that implement this framework."
+          }
+        },
+        "required": [
+          "name",
+          "summary"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "restricted_attributes": {
+      "type": "array",
+      "description": "Restricted attribute categories that regulations in this category prohibit for targeting. Governance agents enforce these when the category is active on a plan \u2014 if a plan declares policy_categories: ['fair_housing'], the governance agent restricts targeting on these attributes.",
+      "items": {
+        "$ref": "../enums/restricted-attribute.json"
+      }
+    },
+    "industries": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Industries where this category commonly applies (e.g., 'pharmaceutical' for age_restricted). Governance agents MAY suggest relevant categories when a plan's brand industry matches but no policy_categories are declared."
+    },
+    "guidance": {
+      "type": "string",
+      "description": "Implementation notes for governance agents. Edge cases, disambiguation, and common pitfalls."
+    },
+    "related_categories": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Categories that frequently co-occur (e.g., 'children_directed' often appears with 'age_restricted')."
+    }
+  },
+  "required": [
+    "category_id",
+    "name",
+    "description"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/governance/policy-entry.json b/schemas/cache/governance/policy-entry.json
index 553050fc1..3fb927e24 100644
--- a/schemas/cache/governance/policy-entry.json
+++ b/schemas/cache/governance/policy-entry.json
@@ -1,150 +1,156 @@
 {
-  "$defs": {
-    "exemplar": {
-      "additionalProperties": false,
-      "properties": {
-        "explanation": {
-          "description": "Why this scenario passes or fails the policy.",
-          "type": "string"
-        },
-        "scenario": {
-          "description": "A concrete scenario describing an advertising action or configuration.",
-          "type": "string"
-        }
-      },
-      "required": [
-        "scenario",
-        "explanation"
-      ],
-      "type": "object"
-    }
-  },
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "description": "A complete policy in the policy registry. Policies use natural language text evaluated by governance agents (LLMs), following the same pattern as Content Standards. The registry's value is in structured metadata (jurisdiction, policy category, source, enforcement level) and calibration exemplars.",
+  "title": "Policy Entry",
+  "description": "A policy \u2014 either published to the shared registry (with full regulatory metadata) or authored inline by a buyer for their own campaign (lightweight, metadata optional). Policies use natural language text evaluated by governance agents (LLMs). Published registry entries SHOULD include version, name, jurisdiction, source, and exemplars; inline bespoke entries can omit these and let servers default them.",
+  "type": "object",
   "properties": {
-    "category": {
-      "$ref": "../enums/policy-category.json",
-      "description": "The nature of the obligation: regulation (legal requirement) or standard (best practice)."
+    "policy_id": {
+      "type": "string",
+      "description": "Unique identifier for this policy. Registry-published ids are canonical (e.g., \"uk_hfss\", \"garm:brand_safety:violence\"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio)."
+    },
+    "source": {
+      "type": "string",
+      "enum": [
+        "registry",
+        "inline"
+      ],
+      "default": "inline",
+      "description": "Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
     },
-    "channels": {
-      "description": "Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.",
-      "items": {
-        "$ref": "../enums/channels.json"
-      },
-      "type": "array"
+    "version": {
+      "type": "string",
+      "description": "Semver version string (e.g., \"1.0.0\"). Incremented when policy content changes. Optional for inline bespoke policies \u2014 defaults to \"1.0.0\". SHOULD be provided for registry-published policies."
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name (e.g., \"UK HFSS Restrictions\"). Optional for inline bespoke policies \u2014 servers MAY default to policy_id."
     },
     "description": {
-      "description": "Brief summary of what this policy covers.",
-      "type": "string"
+      "type": "string",
+      "description": "Brief summary of what this policy covers."
     },
-    "effective_date": {
-      "description": "ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level.",
-      "format": "date",
-      "type": "string"
+    "category": {
+      "$ref": "../enums/policy-category.json",
+      "description": "The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies \u2014 defaults to \"standard\"."
     },
     "enforcement": {
       "$ref": "../enums/policy-enforcement.json",
       "description": "How governance agents treat violations. Regulations are typically \"must\"; standards are typically \"should\"."
     },
-    "exemplars": {
-      "additionalProperties": false,
-      "description": "Calibration examples for governance agents, following the Content Standards pattern.",
-      "properties": {
-        "fail": {
-          "description": "Scenarios that violate this policy.",
-          "items": {
-            "$ref": "#/$defs/exemplar"
-          },
-          "type": "array"
-        },
-        "pass": {
-          "description": "Scenarios that comply with this policy.",
-          "items": {
-            "$ref": "#/$defs/exemplar"
-          },
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "governance_domains": {
-      "description": "Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains [\"creative\", \"property\"] can be declared as a feature by both creative and property governance agents.",
-      "items": {
-        "$ref": "../enums/governance-domain.json"
-      },
-      "type": "array"
-    },
-    "guidance": {
-      "description": "Implementation notes for governance agent developers. Not used in evaluation prompts.",
-      "type": "string"
-    },
     "jurisdictions": {
-      "description": "ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific.",
+      "type": "array",
       "items": {
         "type": "string"
       },
-      "type": "array"
-    },
-    "name": {
-      "description": "Human-readable name (e.g., \"UK HFSS Restrictions\").",
-      "type": "string"
+      "description": "ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific."
     },
-    "policy": {
-      "description": "Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy.",
-      "type": "string"
+    "region_aliases": {
+      "type": "object",
+      "description": "Named groups of jurisdictions for convenience (e.g., {\"EU\": [\"AT\",\"BE\",\"BG\",...]}). Governance agents expand aliases when matching against a plan's target jurisdictions.",
+      "additionalProperties": {
+        "type": "array",
+        "items": {
+          "type": "string"
+        }
+      }
     },
     "policy_categories": {
-      "description": "Regulatory categories this policy belongs to (e.g., [\"children_directed\", \"age_restricted\"]). Used for automatic matching against a campaign plan's declared policy_categories. A single policy can belong to multiple categories.",
+      "type": "array",
       "items": {
         "type": "string"
       },
-      "type": "array"
+      "description": "Regulatory categories this policy belongs to (e.g., [\"children_directed\", \"age_restricted\"]). Used for automatic matching against a campaign plan's declared policy_categories. A single policy can belong to multiple categories."
     },
-    "policy_id": {
-      "description": "Unique identifier for this policy (e.g., \"uk_hfss\", \"us_coppa\", \"alcohol_advertising\").",
-      "type": "string"
+    "channels": {
+      "type": "array",
+      "items": {
+        "$ref": "../enums/channels.json"
+      },
+      "description": "Advertising channels this policy applies to. If omitted or null, the policy applies to all channels."
     },
-    "region_aliases": {
-      "additionalProperties": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
+    "governance_domains": {
+      "type": "array",
+      "items": {
+        "$ref": "../enums/governance-domain.json"
       },
-      "description": "Named groups of jurisdictions for convenience (e.g., {\"EU\": [\"AT\",\"BE\",\"BG\",...]}). Governance agents expand aliases when matching against a plan's target jurisdictions.",
-      "type": "object"
+      "description": "Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains [\"creative\", \"property\"] can be declared as a feature by both creative and property governance agents."
     },
-    "source_name": {
-      "description": "Name of the issuing body (e.g., \"UK Food Standards Agency\", \"US Federal Trade Commission\").",
-      "type": "string"
+    "effective_date": {
+      "type": "string",
+      "format": "date",
+      "description": "ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level."
+    },
+    "sunset_date": {
+      "type": "string",
+      "format": "date",
+      "description": "ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration."
     },
     "source_url": {
-      "description": "Link to the source regulation, standard, or legislation.",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "Link to the source regulation, standard, or legislation."
     },
-    "sunset_date": {
-      "description": "ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration.",
-      "format": "date",
-      "type": "string"
+    "source_name": {
+      "type": "string",
+      "description": "Name of the issuing body (e.g., \"UK Food Standards Agency\", \"US Federal Trade Commission\")."
     },
-    "version": {
-      "description": "Semver version string (e.g., \"1.0.0\"). Incremented when policy content changes.",
-      "type": "string"
+    "policy": {
+      "type": "string",
+      "description": "Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy."
+    },
+    "guidance": {
+      "type": "string",
+      "description": "Implementation notes for governance agent developers. Not used in evaluation prompts."
+    },
+    "exemplars": {
+      "type": "object",
+      "description": "Calibration examples for governance agents, following the Content Standards pattern.",
+      "properties": {
+        "pass": {
+          "type": "array",
+          "items": {
+            "$ref": "#/$defs/exemplar"
+          },
+          "description": "Scenarios that comply with this policy."
+        },
+        "fail": {
+          "type": "array",
+          "items": {
+            "$ref": "#/$defs/exemplar"
+          },
+          "description": "Scenarios that violate this policy."
+        }
+      },
+      "additionalProperties": false
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "policy_id",
-    "version",
-    "name",
-    "category",
     "enforcement",
     "policy"
   ],
-  "title": "Policy Entry",
-  "type": "object"
+  "additionalProperties": false,
+  "$defs": {
+    "exemplar": {
+      "type": "object",
+      "properties": {
+        "scenario": {
+          "type": "string",
+          "description": "A concrete scenario describing an advertising action or configuration."
+        },
+        "explanation": {
+          "type": "string",
+          "description": "Why this scenario passes or fails the policy."
+        }
+      },
+      "required": [
+        "scenario",
+        "explanation"
+      ],
+      "additionalProperties": false
+    }
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/policy-ref.json b/schemas/cache/governance/policy-ref.json
index dd6d16353..d77f0d0ee 100644
--- a/schemas/cache/governance/policy-ref.json
+++ b/schemas/cache/governance/policy-ref.json
@@ -1,25 +1,25 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Policy Reference",
   "description": "A reference to a policy in the policy registry. Used in brand compliance configurations to declare which registry policies apply.",
+  "type": "object",
   "properties": {
-    "config": {
-      "additionalProperties": true,
-      "description": "Brand-specific parameter overrides for configurable policies. The accepted shape depends on the policy's config_schema.",
-      "type": "object"
-    },
     "policy_id": {
-      "description": "The unique identifier of the policy in the registry (e.g., \"uk_hfss\", \"us_coppa\").",
-      "type": "string"
+      "type": "string",
+      "description": "The unique identifier of the policy in the registry (e.g., \"uk_hfss\", \"us_coppa\")."
     },
     "version": {
-      "description": "Pin a specific policy version (semver). If omitted, the current version is used.",
-      "type": "string"
+      "type": "string",
+      "description": "Pin a specific policy version (semver). If omitted, the current version is used."
+    },
+    "config": {
+      "type": "object",
+      "description": "Brand-specific parameter overrides for configurable policies. The accepted shape depends on the policy's config_schema.",
+      "additionalProperties": true
     }
   },
   "required": [
     "policy_id"
   ],
-  "title": "Policy Reference",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/report-plan-outcome-request.json b/schemas/cache/governance/report-plan-outcome-request.json
index a3fa86ff0..a8560dc1d 100644
--- a/schemas/cache/governance/report-plan-outcome-request.json
+++ b/schemas/cache/governance/report-plan-outcome-request.json
@@ -1,144 +1,160 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Report Plan Outcome Request",
   "description": "Report the outcome of an action to the governance agent. Called by the orchestrator (buyer-side agent) after a seller responds. This is the 'after' half of the governance loop. Sellers do not call this task -- they report delivery data via check_governance with phase 'delivery'.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "plan_id": {
+      "type": "string",
+      "description": "The plan this outcome is for."
+    },
     "check_id": {
-      "description": "The check_id from check_governance. Links the outcome to the governance check that authorized it. Required for 'completed' and 'failed' outcomes.",
-      "type": "string"
+      "type": "string",
+      "description": "The check_id from check_governance. Links the outcome to the governance check that authorized it. Required for 'completed' and 'failed' outcomes."
     },
-    "delivery": {
-      "additionalProperties": true,
-      "description": "Delivery metrics. Required when outcome is 'delivery'.",
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate outcome reports on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "purchase_type": {
+      "$ref": "../enums/purchase-type.json",
+      "description": "The type of financial commitment this outcome is for. Determines which budget allocation (if any) to charge against. Defaults to 'media_buy' when omitted.",
+      "default": "media_buy"
+    },
+    "outcome": {
+      "$ref": "../enums/outcome-type.json",
+      "description": "Outcome type."
+    },
+    "seller_response": {
+      "type": "object",
+      "description": "The seller's full response. Required when outcome is 'completed'.",
       "properties": {
-        "completion_rate": {
-          "description": "Video completion rate (0-1).",
-          "type": "number"
-        },
-        "cpm": {
-          "description": "Effective CPM for the period.",
-          "type": "number"
+        "seller_reference": {
+          "type": "string",
+          "description": "The seller's identifier for the created resource (e.g., media_buy_id, rights_grant_id, deployment_id). Not interpreted by the governance agent \u2014 included in audit logs for human-readable traceability alongside the opaque governance_context.",
+          "maxLength": 255
         },
-        "impressions": {
-          "description": "Impressions delivered in the period.",
+        "committed_budget": {
+          "type": "number",
           "minimum": 0,
-          "type": "integer"
+          "description": "Total budget committed across all confirmed packages. When present, the governance agent uses this directly instead of summing package budgets."
         },
-        "media_buy_id": {
-          "description": "The media buy being reported on.",
-          "type": "string"
+        "packages": {
+          "type": "array",
+          "description": "Confirmed packages with actual budget and targeting.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "budget": {
+                "type": "number",
+                "minimum": 0
+              }
+            },
+            "additionalProperties": true
+          }
+        },
+        "planned_delivery": {
+          "$ref": "../core/planned-delivery.json",
+          "description": "What the seller said it will deliver. When seller-side governance is not configured, this is the governance agent's only view of the seller's delivery parameters."
         },
+        "creative_deadline": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 deadline for creative submission."
+        }
+      },
+      "additionalProperties": true
+    },
+    "delivery": {
+      "type": "object",
+      "description": "Delivery metrics. Required when outcome is 'delivery'.",
+      "properties": {
         "reporting_period": {
-          "additionalProperties": false,
+          "type": "object",
           "description": "Start and end timestamps for the reporting window.",
           "properties": {
-            "end": {
-              "format": "date-time",
-              "type": "string"
-            },
             "start": {
-              "format": "date-time",
-              "type": "string"
+              "type": "string",
+              "format": "date-time"
+            },
+            "end": {
+              "type": "string",
+              "format": "date-time"
             }
           },
           "required": [
             "start",
             "end"
           ],
-          "type": "object"
+          "additionalProperties": false
+        },
+        "impressions": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Impressions delivered in the period."
         },
         "spend": {
-          "description": "Spend in the period.",
-          "type": "number"
+          "type": "number",
+          "description": "Spend in the period."
+        },
+        "cpm": {
+          "type": "number",
+          "description": "Effective CPM for the period."
         },
         "viewability_rate": {
-          "description": "Viewability rate (0-1).",
-          "type": "number"
+          "type": "number",
+          "description": "Viewability rate (0-1)."
+        },
+        "completion_rate": {
+          "type": "number",
+          "description": "Video completion rate (0-1)."
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
     "error": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Error details. Required when outcome is 'failed'.",
       "properties": {
         "code": {
-          "description": "Error code from the seller.",
-          "type": "string"
+          "type": "string",
+          "description": "Error code from the seller."
         },
         "message": {
-          "description": "Human-readable error description.",
-          "type": "string"
+          "type": "string",
+          "description": "Human-readable error description."
         }
       },
-      "type": "object"
+      "additionalProperties": false
     },
     "governance_context": {
+      "type": "string",
       "description": "Opaque governance context from the check_governance response that authorized this action. Enables the governance agent to correlate the outcome to the original check.",
-      "maxLength": 4096,
       "minLength": 1,
-      "pattern": "^[\\x20-\\x7E]+$",
-      "type": "string"
-    },
-    "idempotency_key": {
-      "description": "Client-generated unique key for this request. Prevents duplicate outcome reports on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
-      "minLength": 16,
-      "type": "string"
-    },
-    "outcome": {
-      "$ref": "../enums/outcome-type.json",
-      "description": "Outcome type."
+      "maxLength": 4096,
+      "pattern": "^[\\x20-\\x7E]+$"
     },
-    "plan_id": {
-      "description": "The plan this outcome is for.",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "seller_response": {
-      "additionalProperties": true,
-      "description": "The seller's full response. Required when outcome is 'completed'.",
-      "properties": {
-        "committed_budget": {
-          "description": "Total budget committed across all confirmed packages. When present, the governance agent uses this directly instead of summing package budgets.",
-          "minimum": 0,
-          "type": "number"
-        },
-        "creative_deadline": {
-          "description": "ISO 8601 deadline for creative submission.",
-          "format": "date-time",
-          "type": "string"
-        },
-        "media_buy_id": {
-          "description": "Seller's media buy identifier.",
-          "type": "string"
-        },
-        "packages": {
-          "description": "Confirmed packages with actual budget and targeting.",
-          "items": {
-            "additionalProperties": true,
-            "properties": {
-              "budget": {
-                "minimum": 0,
-                "type": "number"
-              }
-            },
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "planned_delivery": {
-          "$ref": "../core/planned-delivery.json",
-          "description": "What the seller said it will deliver. When seller-side governance is not configured, this is the governance agent's only view of the seller's delivery parameters."
-        }
-      },
-      "type": "object"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "plan_id",
     "outcome",
     "governance_context"
   ],
-  "title": "Report Plan Outcome Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/report-plan-outcome-response.json b/schemas/cache/governance/report-plan-outcome-response.json
index f1948eaeb..ed6481bfd 100644
--- a/schemas/cache/governance/report-plan-outcome-response.json
+++ b/schemas/cache/governance/report-plan-outcome-response.json
@@ -1,33 +1,47 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Report Plan Outcome Response",
   "description": "Response from reporting an action outcome. Only returned to the orchestrator (buyer-side agent) that manages the plan. Sellers report delivery data via check_governance with phase 'delivery', not via this task.",
+  "type": "object",
   "properties": {
+    "outcome_id": {
+      "type": "string",
+      "description": "Unique identifier for this outcome record."
+    },
+    "status": {
+      "type": "string",
+      "enum": [
+        "accepted",
+        "findings"
+      ],
+      "description": "'accepted' means state updated with no issues. 'findings' means issues were detected."
+    },
     "committed_budget": {
-      "description": "Budget committed from this outcome. Present for 'completed' and 'failed' outcomes.",
-      "type": "number"
+      "type": "number",
+      "description": "Budget committed from this outcome. Present for 'completed' and 'failed' outcomes."
     },
     "findings": {
+      "type": "array",
       "description": "Issues detected. Present only when status is 'findings'.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "category_id": {
-            "description": "Which validation category flagged the issue.",
-            "type": "string"
-          },
-          "details": {
-            "additionalProperties": true,
-            "description": "Structured details for programmatic consumption.",
-            "type": "object"
-          },
-          "explanation": {
-            "description": "Human-readable description of the issue.",
-            "type": "string"
+            "type": "string",
+            "description": "Which validation category flagged the issue."
           },
           "severity": {
             "$ref": "../enums/escalation-severity.json",
             "description": "Finding severity."
+          },
+          "explanation": {
+            "type": "string",
+            "description": "Human-readable description of the issue."
+          },
+          "details": {
+            "type": "object",
+            "description": "Structured details for programmatic consumption.",
+            "additionalProperties": true
           }
         },
         "required": [
@@ -35,42 +49,34 @@
           "severity",
           "explanation"
         ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "outcome_id": {
-      "description": "Unique identifier for this outcome record.",
-      "type": "string"
+        "additionalProperties": false
+      }
     },
     "plan_summary": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Updated plan budget state. Present for 'completed' and 'failed' outcomes.",
       "properties": {
-        "budget_remaining": {
-          "description": "Authorized budget minus total committed.",
-          "type": "number"
-        },
         "total_committed": {
-          "description": "Total budget committed across all campaigns in the plan.",
-          "type": "number"
+          "type": "number",
+          "description": "Total budget committed across all campaigns in the plan."
+        },
+        "budget_remaining": {
+          "type": "number",
+          "description": "Authorized budget minus total committed."
         }
       },
-      "type": "object"
+      "additionalProperties": false
     },
-    "status": {
-      "description": "'accepted' means state updated with no issues. 'findings' means issues were detected.",
-      "enum": [
-        "accepted",
-        "findings"
-      ],
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "outcome_id",
     "status"
   ],
-  "title": "Report Plan Outcome Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/sync-plans-request.json b/schemas/cache/governance/sync-plans-request.json
index 35fa86e28..cce351d6d 100644
--- a/schemas/cache/governance/sync-plans-request.json
+++ b/schemas/cache/governance/sync-plans-request.json
@@ -1,55 +1,87 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Sync Plans Request",
   "description": "Push campaign plans to the governance agent. A plan defines the authorized parameters for a campaign -- budget limits, channels, flight dates, and authorized markets.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `plan_id` gives resource-level dedup per plan, but the sync envelope emits audit events and can trigger governance reapproval \u2014 this key prevents those side effects from firing twice on retry. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
     "plans": {
+      "type": "array",
       "description": "One or more campaign plans to sync.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
-          "approved_sellers": {
-            "description": "List of approved seller agent URLs. null means any seller.",
-            "items": {
-              "format": "uri",
-              "type": "string"
-            },
-            "type": [
-              "array",
-              "null"
-            ]
-          },
-          "audience": {
-            "$ref": "audience-constraints.json",
-            "description": "Audience targeting constraints. Defines who the campaign should reach (include) and must not reach (exclude). The governance agent evaluates seller targeting against these constraints."
+          "plan_id": {
+            "type": "string",
+            "description": "Unique identifier for this plan."
           },
           "brand": {
             "$ref": "../core/brand-ref.json",
             "description": "Brand or organization being governed. For campaign plans, the governance agent resolves the brand's compliance configuration. For portfolio plans, this is the holding company or parent organization."
           },
+          "objectives": {
+            "type": "string",
+            "description": "Natural language campaign objectives. Used for strategic alignment validation."
+          },
           "budget": {
-            "additionalProperties": false,
+            "type": "object",
             "description": "Budget authorization parameters.",
             "properties": {
+              "total": {
+                "type": "number",
+                "description": "Total authorized budget."
+              },
+              "currency": {
+                "type": "string",
+                "description": "ISO 4217 currency code."
+              },
               "authority_level": {
                 "$ref": "../enums/budget-authority-level.json",
                 "description": "Budget authority level for the orchestrator agent."
               },
-              "currency": {
-                "description": "ISO 4217 currency code.",
-                "type": "string"
-              },
               "per_seller_max_pct": {
-                "description": "Maximum percentage of budget that can go to a single seller.",
-                "type": "number"
+                "type": "number",
+                "description": "Maximum percentage of budget that can go to a single seller."
               },
               "reallocation_threshold": {
-                "description": "Amount above which reallocations require escalation (for agent_limited).",
-                "type": "number"
+                "type": "number",
+                "description": "Amount above which reallocations require escalation (for agent_limited)."
               },
-              "total": {
-                "description": "Total authorized budget.",
-                "type": "number"
+              "allocations": {
+                "type": "object",
+                "description": "Optional budget partition across purchase types. Keys are purchase-type enum values (media_buy, rights_license, signal_activation, creative_services). When present, the governance agent validates spend against both the total and the per-type allocation. When absent, all spend counts against the single total regardless of purchase type.",
+                "propertyNames": {
+                  "$ref": "../enums/purchase-type.json"
+                },
+                "additionalProperties": {
+                  "type": "object",
+                  "properties": {
+                    "amount": {
+                      "type": "number",
+                      "minimum": 0,
+                      "description": "Maximum budget for this purchase type."
+                    },
+                    "max_pct": {
+                      "type": "number",
+                      "minimum": 0,
+                      "maximum": 100,
+                      "description": "Maximum percentage of total budget for this purchase type."
+                    }
+                  },
+                  "additionalProperties": false
+                }
               }
             },
             "required": [
@@ -57,76 +89,157 @@
               "currency",
               "authority_level"
             ],
-            "type": "object"
+            "additionalProperties": false
           },
           "channels": {
-            "additionalProperties": false,
+            "type": "object",
             "description": "Channel constraints. If omitted, all channels are allowed.",
             "properties": {
+              "required": {
+                "type": "array",
+                "items": {
+                  "$ref": "../enums/channels.json"
+                },
+                "description": "Channels that must be included in the media mix."
+              },
               "allowed": {
-                "description": "Channels the orchestrator may use.",
+                "type": "array",
                 "items": {
                   "$ref": "../enums/channels.json"
                 },
-                "type": "array"
+                "description": "Channels the orchestrator may use."
               },
               "mix_targets": {
+                "type": "object",
+                "description": "Target allocation ranges per channel, keyed by channel ID.",
                 "additionalProperties": {
-                  "additionalProperties": false,
+                  "type": "object",
                   "properties": {
-                    "max_pct": {
+                    "min_pct": {
                       "type": "number"
                     },
-                    "min_pct": {
+                    "max_pct": {
                       "type": "number"
                     }
                   },
-                  "type": "object"
-                },
-                "description": "Target allocation ranges per channel, keyed by channel ID.",
-                "type": "object"
+                  "additionalProperties": false
+                }
+              }
+            },
+            "additionalProperties": false
+          },
+          "flight": {
+            "type": "object",
+            "description": "Authorized flight dates. Governed actions with dates outside this window are rejected.",
+            "properties": {
+              "start": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Flight start (ISO 8601)."
               },
-              "required": {
-                "description": "Channels that must be included in the media mix.",
-                "items": {
-                  "$ref": "../enums/channels.json"
-                },
-                "type": "array"
+              "end": {
+                "type": "string",
+                "format": "date-time",
+                "description": "Flight end (ISO 8601)."
               }
             },
-            "type": "object"
+            "required": [
+              "start",
+              "end"
+            ],
+            "additionalProperties": false
           },
           "countries": {
-            "description": "ISO 3166-1 alpha-2 country codes for authorized markets (e.g., ['US', 'GB']). The governance agent rejects media buys targeting outside these countries and resolves applicable policies by matching against policy jurisdictions.",
+            "type": "array",
             "items": {
               "type": "string"
             },
             "minItems": 1,
-            "type": "array"
+            "description": "ISO 3166-1 alpha-2 country codes for authorized markets (e.g., ['US', 'GB']). The governance agent rejects governed actions targeting outside these countries and resolves applicable policies by matching against policy jurisdictions."
           },
-          "custom_policies": {
-            "description": "Natural language policy statements specific to this campaign (e.g., 'No advertising adjacent to competitor content'). Applied regardless of geography.",
+          "regions": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1,
+            "description": "ISO 3166-2 subdivision codes for authorized sub-national markets (e.g., ['US-MA', 'US-CA']). When present, the governance agent restricts governed actions to these specific regions rather than the full country. Use for plans limited to specific states or provinces (e.g., cannabis in legal states). Policy resolution matches against both the subdivision and its parent country."
+          },
+          "policy_ids": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "description": "Registry policy IDs to enforce for this plan. The governance agent resolves full policy definitions from the registry and evaluates actions against them. Intersected with the plan's countries/regions to activate only geographically relevant policies."
+          },
+          "policy_categories": {
+            "type": "array",
+            "description": "Regulatory categories that apply to this campaign. Determines which policy regimes the governance agent enforces (e.g., 'children_directed' activates COPPA/AADC, 'political_advertising' activates disclosure requirements). The governance agent resolves categories to specific policies based on the plan's jurisdictions. When omitted, governance agents MAY infer categories from the brand's industries and the plan's objectives. Values are registry-defined category IDs (intentionally freeform strings, not an enum \u2014 new categories are added as regulations evolve).",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
+          },
+          "audience": {
+            "$ref": "audience-constraints.json",
+            "description": "Audience targeting constraints. Defines who the campaign should reach (include) and must not reach (exclude). The governance agent evaluates seller targeting against these constraints."
+          },
+          "restricted_attributes": {
+            "type": "array",
+            "description": "Personal data categories that must not be used for targeting in this campaign. Applies horizontally across all audience criteria. Used for EU DSA Article 26 compliance (prohibits targeting on GDPR Article 9 special categories) and similar regulations. The governance agent flags any audience targeting that references these attributes.",
+            "items": {
+              "$ref": "../enums/restricted-attribute.json"
+            },
+            "minItems": 1
+          },
+          "restricted_attributes_custom": {
+            "type": "array",
+            "description": "Additional restricted attributes not covered by the restricted-attribute enum. Freeform strings for jurisdiction-specific or brand-specific restrictions beyond GDPR Article 9 categories (e.g., 'financial_status', 'immigration_status'). Governance agents use semantic matching for these.",
             "items": {
               "type": "string"
             },
-            "type": "array"
+            "minItems": 1
+          },
+          "min_audience_size": {
+            "type": "integer",
+            "description": "Minimum audience segment size. Prevents micro-targeting by ensuring segments meet a k-anonymity threshold. Applies to the estimated combined (intersection) audience when multiple criteria are used, not just individual criterion sizes. The governance agent validates this by querying signal catalog metadata or seller-reported segment sizes. When segment size data is unavailable, the governance agent SHOULD produce a finding with reduced confidence rather than silently passing.",
+            "minimum": 1
+          },
+          "custom_policies": {
+            "type": "array",
+            "items": {
+              "$ref": "policy-entry.json"
+            },
+            "description": "Bespoke policies specific to this campaign, using the same shape as registry entries. Each policy has a policy_id, enforcement (must|should), and natural-language policy text. Governance findings reference policy_id to identify which policy triggered. For quick authoring, omit version/name/category \u2014 servers default them."
+          },
+          "approved_sellers": {
+            "type": [
+              "array",
+              "null"
+            ],
+            "items": {
+              "type": "string",
+              "format": "uri"
+            },
+            "description": "List of approved seller agent URLs. null means any seller."
           },
           "delegations": {
+            "type": "array",
             "description": "Agents authorized to execute against this plan. Each delegation scopes an agent's authority by budget, markets, and expiration. The governance agent validates that the requesting agent matches a delegation before approving actions.",
             "items": {
-              "additionalProperties": false,
+              "type": "object",
               "properties": {
                 "agent_url": {
-                  "description": "URL of the delegated agent.",
+                  "type": "string",
                   "format": "uri",
-                  "type": "string"
+                  "description": "URL of the delegated agent."
                 },
                 "authority": {
                   "$ref": "../enums/delegation-authority.json",
                   "description": "Authority level granted to this agent."
                 },
                 "budget_limit": {
-                  "additionalProperties": false,
+                  "type": "object",
                   "description": "Maximum budget this agent can commit. When omitted, the agent can commit up to the plan's total budget.",
                   "properties": {
                     "amount": {
@@ -140,108 +253,41 @@
                     "amount",
                     "currency"
                   ],
-                  "type": "object"
-                },
-                "expires_at": {
-                  "description": "When this delegation expires. After expiration, the governance agent denies actions from this agent.",
-                  "format": "date-time",
-                  "type": "string"
+                  "additionalProperties": false
                 },
                 "markets": {
-                  "description": "ISO 3166-1/3166-2 codes this agent is authorized for. When omitted, the agent can operate in all plan markets.",
+                  "type": "array",
                   "items": {
                     "type": "string"
                   },
-                  "type": "array"
+                  "description": "ISO 3166-1/3166-2 codes this agent is authorized for. When omitted, the agent can operate in all plan markets."
+                },
+                "expires_at": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this delegation expires. After expiration, the governance agent denies actions from this agent."
                 }
               },
               "required": [
                 "agent_url",
                 "authority"
               ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "ext": {
-            "$ref": "../core/ext.json"
-          },
-          "flight": {
-            "additionalProperties": false,
-            "description": "Authorized flight dates. Media buys with dates outside this window are rejected.",
-            "properties": {
-              "end": {
-                "description": "Flight end (ISO 8601).",
-                "format": "date-time",
-                "type": "string"
-              },
-              "start": {
-                "description": "Flight start (ISO 8601).",
-                "format": "date-time",
-                "type": "string"
-              }
-            },
-            "required": [
-              "start",
-              "end"
-            ],
-            "type": "object"
-          },
-          "min_audience_size": {
-            "description": "Minimum audience segment size. Prevents micro-targeting by ensuring segments meet a k-anonymity threshold. Applies to the estimated combined (intersection) audience when multiple criteria are used, not just individual criterion sizes. The governance agent validates this by querying signal catalog metadata or seller-reported segment sizes. When segment size data is unavailable, the governance agent SHOULD produce a finding with reduced confidence rather than silently passing.",
-            "minimum": 1,
-            "type": "integer"
-          },
-          "objectives": {
-            "description": "Natural language campaign objectives. Used for strategic alignment validation.",
-            "type": "string"
-          },
-          "plan_id": {
-            "description": "Unique identifier for this plan.",
-            "type": "string"
-          },
-          "policy_categories": {
-            "description": "Regulatory categories that apply to this campaign. Determines which policy regimes the governance agent enforces (e.g., 'children_directed' activates COPPA/AADC, 'political_advertising' activates disclosure requirements). The governance agent resolves categories to specific policies based on the plan's jurisdictions. When omitted, governance agents MAY infer categories from the brand's industries and the plan's objectives. Values are registry-defined category IDs (intentionally freeform strings, not an enum \u2014 new categories are added as regulations evolve).",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
-          },
-          "policy_ids": {
-            "description": "Registry policy IDs to enforce for this plan. The governance agent resolves full policy definitions from the registry and evaluates actions against them. Intersected with the plan's countries/regions to activate only geographically relevant policies.",
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
+              "additionalProperties": false
+            }
           },
           "portfolio": {
-            "additionalProperties": false,
+            "type": "object",
             "description": "Portfolio-level governance constraints. When present, this plan acts as a portfolio plan that governs member plans. Portfolio plans define cross-brand constraints that no individual brand plan can override.",
             "properties": {
               "member_plan_ids": {
-                "description": "Plan IDs governed by this portfolio plan. The governance agent validates member plan actions against portfolio constraints.",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
-              },
-              "shared_exclusions": {
-                "description": "Natural language exclusion rules applied across all member plans (e.g., 'No advertising on properties owned by competitor holding companies').",
+                "type": "array",
                 "items": {
                   "type": "string"
                 },
-                "type": "array"
-              },
-              "shared_policy_ids": {
-                "description": "Registry policy IDs enforced across all member plans, regardless of individual brand configuration.",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
+                "description": "Plan IDs governed by this portfolio plan. The governance agent validates member plan actions against portfolio constraints."
               },
               "total_budget_cap": {
-                "additionalProperties": false,
+                "type": "object",
                 "description": "Maximum aggregate budget across all member plans.",
                 "properties": {
                   "amount": {
@@ -255,37 +301,30 @@
                   "amount",
                   "currency"
                 ],
-                "type": "object"
+                "additionalProperties": false
+              },
+              "shared_policy_ids": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "description": "Registry policy IDs enforced across all member plans, regardless of individual brand configuration."
+              },
+              "shared_exclusions": {
+                "type": "array",
+                "items": {
+                  "$ref": "policy-entry.json"
+                },
+                "description": "Bespoke exclusion policies applied across all member plans, using the same shape as registry entries. Authored typically as enforcement: must policies with exclusion language in the policy text (e.g., 'No advertising on properties owned by competitor holding companies')."
               }
             },
             "required": [
               "member_plan_ids"
             ],
-            "type": "object"
-          },
-          "regions": {
-            "description": "ISO 3166-2 subdivision codes for authorized sub-national markets (e.g., ['US-MA', 'US-CA']). When present, the governance agent restricts buys to these specific regions rather than the full country. Use for campaigns limited to specific states or provinces (e.g., cannabis in legal states). Policy resolution matches against both the subdivision and its parent country.",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
-          },
-          "restricted_attributes": {
-            "description": "Personal data categories that must not be used for targeting in this campaign. Applies horizontally across all audience criteria. Used for EU DSA Article 26 compliance (prohibits targeting on GDPR Article 9 special categories) and similar regulations. The governance agent flags any audience targeting that references these attributes.",
-            "items": {
-              "$ref": "../enums/restricted-attribute.json"
-            },
-            "minItems": 1,
-            "type": "array"
+            "additionalProperties": false
           },
-          "restricted_attributes_custom": {
-            "description": "Additional restricted attributes not covered by the restricted-attribute enum. Freeform strings for jurisdiction-specific or brand-specific restrictions beyond GDPR Article 9 categories (e.g., 'financial_status', 'immigration_status'). Governance agents use semantic matching for these.",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
+          "ext": {
+            "$ref": "../core/ext.json"
           }
         },
         "required": [
@@ -295,14 +334,19 @@
           "budget",
           "flight"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": false
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "plans"
   ],
-  "title": "Sync Plans Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/governance/sync-plans-response.json b/schemas/cache/governance/sync-plans-response.json
index 85f7f47ea..2cd11022e 100644
--- a/schemas/cache/governance/sync-plans-response.json
+++ b/schemas/cache/governance/sync-plans-response.json
@@ -1,67 +1,82 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Sync Plans Response",
   "description": "Response from syncing campaign plans. Returns status and active validation categories for each plan.",
+  "type": "object",
   "properties": {
     "plans": {
+      "type": "array",
       "description": "Status for each synced plan.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
+          "plan_id": {
+            "type": "string",
+            "description": "Plan identifier."
+          },
+          "status": {
+            "type": "string",
+            "enum": [
+              "active",
+              "error"
+            ],
+            "description": "Sync result status. 'active' means sync succeeded; 'error' means sync failed."
+          },
+          "version": {
+            "type": "integer",
+            "description": "Plan version (increments on each sync)."
+          },
           "categories": {
+            "type": "array",
             "description": "Validation categories active for this plan.",
             "items": {
-              "additionalProperties": false,
+              "type": "object",
               "properties": {
                 "category_id": {
-                  "description": "Validation category identifier.",
-                  "type": "string"
+                  "type": "string",
+                  "description": "Validation category identifier."
                 },
                 "status": {
-                  "description": "Whether this category is active for this plan.",
+                  "type": "string",
                   "enum": [
                     "active",
                     "inactive"
                   ],
-                  "type": "string"
+                  "description": "Whether this category is active for this plan."
                 }
               },
               "required": [
                 "category_id",
                 "status"
               ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "plan_id": {
-            "description": "Plan identifier.",
-            "type": "string"
+              "additionalProperties": false
+            }
           },
           "resolved_policies": {
+            "type": "array",
             "description": "Policies the governance agent will enforce for this plan. Includes explicitly referenced policies from the brand compliance configuration and auto-applied policies matched by jurisdiction or policy category. Present when the governance agent supports policy resolution.",
             "items": {
-              "additionalProperties": false,
+              "type": "object",
               "properties": {
-                "enforcement": {
-                  "$ref": "../enums/policy-enforcement.json",
-                  "description": "Enforcement level for this policy."
-                },
                 "policy_id": {
-                  "description": "Registry policy ID.",
-                  "type": "string"
-                },
-                "reason": {
-                  "description": "Why this policy was included (e.g., 'Matched jurisdiction US and policy category pharmaceutical_advertising').",
-                  "type": "string"
+                  "type": "string",
+                  "description": "Registry policy ID."
                 },
                 "source": {
-                  "description": "How this policy was included. 'explicit': referenced in the brand compliance configuration. 'auto_applied': matched automatically by jurisdiction or policy category.",
+                  "type": "string",
                   "enum": [
                     "explicit",
                     "auto_applied"
                   ],
-                  "type": "string"
+                  "description": "How this policy was included. 'explicit': referenced in the brand compliance configuration. 'auto_applied': matched automatically by jurisdiction or policy category."
+                },
+                "enforcement": {
+                  "$ref": "../enums/policy-enforcement.json",
+                  "description": "Enforcement level for this policy."
+                },
+                "reason": {
+                  "type": "string",
+                  "description": "Why this policy was included (e.g., 'Matched jurisdiction US and policy category pharmaceutical_advertising')."
                 }
               },
               "required": [
@@ -69,21 +84,8 @@
                 "source",
                 "enforcement"
               ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "status": {
-            "description": "Sync result status. 'active' means sync succeeded; 'error' means sync failed.",
-            "enum": [
-              "active",
-              "error"
-            ],
-            "type": "string"
-          },
-          "version": {
-            "description": "Plan version (increments on each sync).",
-            "type": "integer"
+              "additionalProperties": false
+            }
           }
         },
         "required": [
@@ -91,14 +93,18 @@
           "status",
           "version"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": false
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "plans"
   ],
-  "title": "Sync Plans Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/index.json b/schemas/cache/index.json
index 02c3de49c..65f9acce3 100644
--- a/schemas/cache/index.json
+++ b/schemas/cache/index.json
@@ -3,12 +3,12 @@
   "title": "AdCP Schema Registry",
   "version": "1.0.0",
   "description": "Registry of all AdCP JSON schemas for validation and discovery",
-  "adcp_version": "3.0.0-rc.2",
+  "adcp_version": "latest",
   "versioning": {
-    "note": "AdCP uses build-time versioning. This directory contains schemas for AdCP 3.0.0-rc.2. Full semantic versions are available at /schemas/{version}/ (e.g., /schemas/2.5.0/). Major version aliases point to the latest release: /schemas/v3/ \u2192 /schemas/3.0.0-rc.2/."
+    "note": "AdCP uses build-time versioning. This directory contains schemas for AdCP latest. Full semantic versions are available at /schemas/{version}/ (e.g., /schemas/2.5.0/). Major version aliases point to the latest release: /schemas/vlatest/ \u2192 /schemas/latest/."
   },
-  "lastUpdated": "2026-03-15",
-  "baseUrl": "/schemas/3.0.0-rc.2",
+  "lastUpdated": "2026-04-18",
+  "baseUrl": "/schemas/latest",
   "schemas": {
     "core": {
       "description": "Core data models used throughout AdCP",
@@ -41,6 +41,10 @@
           "$ref": "core/duration.json",
           "description": "A time duration with value and unit (hours or days)"
         },
+        "feature-requirement": {
+          "$ref": "core/feature-requirement.json",
+          "description": "A feature-based requirement \u2014 reusable predicate over a feature value. Used by property list filters, designed for reuse across governance surfaces."
+        },
         "frequency-cap": {
           "$ref": "core/frequency-cap.json",
           "description": "Frequency capping settings"
@@ -73,6 +77,18 @@
           "$ref": "core/creative-policy.json",
           "description": "Creative requirements and restrictions for a product"
         },
+        "deadline-policy": {
+          "$ref": "core/deadline-policy.json",
+          "description": "Default deadline rules for installments based on lead times from scheduled_at"
+        },
+        "installment-deadlines": {
+          "$ref": "core/installment-deadlines.json",
+          "description": "Booking, cancellation, and material submission deadlines for an installment"
+        },
+        "material-deadline": {
+          "$ref": "core/material-deadline.json",
+          "description": "A deadline for creative material submission at a specific stage"
+        },
         "response": {
           "$ref": "core/response.json",
           "description": "Standard response structure (MCP)"
@@ -145,6 +161,10 @@
           "$ref": "core/proposal.json",
           "description": "A proposed media plan with budget allocations across products - actionable via create_media_buy"
         },
+        "insertion-order": {
+          "$ref": "core/insertion-order.json",
+          "description": "A formal insertion order attached to a committed proposal for agreement signing"
+        },
         "product-allocation": {
           "$ref": "core/product-allocation.json",
           "description": "A budget allocation for a specific product within a proposal"
@@ -225,10 +245,18 @@
           "$ref": "core/protocol-envelope.json",
           "description": "Standard envelope structure added by protocol layer (MCP, A2A, REST) that wraps task response payloads with protocol-level fields like status, context_id, task_id, and message"
         },
+        "agent-signing-key": {
+          "$ref": "core/agent-signing-key.json",
+          "description": "Publisher-attested public key material for an authorized agent"
+        },
         "placement": {
           "$ref": "core/placement.json",
           "description": "Represents a specific ad placement within a product's inventory"
         },
+        "placement-definition": {
+          "$ref": "core/placement-definition.json",
+          "description": "Canonical placement definition published in a publisher's adagents.json"
+        },
         "mcp-webhook-payload": {
           "$ref": "core/mcp-webhook-payload.json",
           "description": "MCP-specific webhook payload structure for HTTP-based push notifications. Protocol-level fields at top-level (task_id, status, etc.) and AdCP data layer nested under 'result'. NOT used in A2A (uses native statusUpdate)."
@@ -259,11 +287,19 @@
         },
         "signal-pricing": {
           "$ref": "core/signal-pricing.json",
-          "description": "Signal pricing model \u2014 discriminated union of cpm (fixed CPM), percent_of_media (percentage of spend, with optional CPM cap), or flat_fee (fixed charge per reporting period)"
+          "description": "Vendor pricing model \u2014 discriminated union of cpm (fixed CPM), percent_of_media (percentage of spend, with optional CPM cap), flat_fee (fixed charge per reporting period), or per_unit (fixed price per unit of work)"
         },
         "signal-pricing-option": {
           "$ref": "core/signal-pricing-option.json",
-          "description": "A pricing option offered by a signals agent, combining a pricing_option_id with a signal pricing model. Returned in get_signals, referenced in report_usage."
+          "description": "Deprecated \u2014 alias for vendor-pricing-option.json. Retained for backward compatibility. Prefer vendor-pricing-option.json for new implementations."
+        },
+        "vendor-pricing-option": {
+          "$ref": "core/vendor-pricing-option.json",
+          "description": "A pricing option offered by a vendor agent (signals, creative, governance), combining a pricing_option_id with a pricing model. Returned in get_signals and list_creatives, referenced in build_creative responses and report_usage."
+        },
+        "creative-consumption": {
+          "$ref": "core/creative-consumption.json",
+          "description": "Structured consumption details returned by build_creative when a paid creative agent computes cost. Well-known fields for tokens, images, renders, and processing time."
         },
         "property-id": {
           "$ref": "core/property-id.json",
@@ -277,6 +313,10 @@
           "$ref": "core/property-list-ref.json",
           "description": "Reference to an externally managed property list for passing large property sets"
         },
+        "collection-list-ref": {
+          "$ref": "core/collection-list-ref.json",
+          "description": "Reference to an externally managed collection list for passing large collection exclusion/inclusion sets"
+        },
         "identifier": {
           "$ref": "core/identifier.json",
           "description": "A property identifier with type and value"
@@ -423,6 +463,10 @@
           "$ref": "enums/delivery-type.json",
           "description": "Type of inventory delivery"
         },
+        "proposal-status": {
+          "$ref": "enums/proposal-status.json",
+          "description": "Lifecycle status of a proposal (draft or committed)"
+        },
         "media-buy-status": {
           "$ref": "enums/media-buy-status.json",
           "description": "Status of a media buy"
@@ -479,10 +523,6 @@
           "$ref": "enums/disclosure-persistence.json",
           "description": "How long a disclosure must persist during content playback or display"
         },
-        "format-category": {
-          "$ref": "enums/format-category.json",
-          "description": "High-level categories for creative formats (audio, video, display, native, dooh, rich_media, universal)"
-        },
         "vast-version": {
           "$ref": "enums/vast-version.json",
           "description": "Supported VAST specification versions (2.0, 3.0, 4.0, 4.1, 4.2)"
@@ -493,7 +533,7 @@
         },
         "property-type": {
           "$ref": "enums/property-type.json",
-          "description": "Types of advertising properties (website, mobile_app, ctv_app, dooh, podcast, radio, streaming_audio)"
+          "description": "Types of addressable advertising properties with verifiable ownership"
         },
         "dimension-unit": {
           "$ref": "enums/dimension-unit.json",
@@ -555,10 +595,14 @@
           "$ref": "enums/creative-agent-capability.json",
           "description": "Capabilities supported by creative agents (validation, assembly, generation, preview, delivery)"
         },
-        "adcp-domain": {
-          "$ref": "enums/adcp-domain.json",
+        "adcp-protocol": {
+          "$ref": "enums/adcp-protocol.json",
           "description": "AdCP protocol domains (media-buy, signals, governance, creative, brand)"
         },
+        "brand-agent-type": {
+          "$ref": "enums/brand-agent-type.json",
+          "description": "Agent types declarable in brand.json (brand, rights, measurement, governance, creative, sales, buying, signals)"
+        },
         "right-use": {
           "$ref": "enums/right-use.json",
           "description": "Types of rights usage (likeness, voice, endorsement, sync, etc.)"
@@ -747,6 +791,10 @@
           "$ref": "enums/governance-domain.json",
           "description": "Governance sub-domains a registry policy applies to (campaign, property, creative, content_standards)"
         },
+        "genre-taxonomy": {
+          "$ref": "enums/genre-taxonomy.json",
+          "description": "Taxonomy systems for genre classification (iab_content_3.0, gracenote, eidr, etc.)"
+        },
         "governance-mode": {
           "$ref": "enums/governance-mode.json",
           "description": "Operating mode for a governance agent (audit, advisory, enforce)"
@@ -825,6 +873,16 @@
             "description": "Response payload for sync_accounts task"
           }
         },
+        "sync-governance": {
+          "request": {
+            "$ref": "account/sync-governance-request.json",
+            "description": "Request parameters for registering governance agent endpoints on accounts"
+          },
+          "response": {
+            "$ref": "account/sync-governance-response.json",
+            "description": "Response payload for sync_governance task"
+          }
+        },
         "report-usage": {
           "request": {
             "$ref": "account/report-usage-request.json",
@@ -1077,10 +1135,6 @@
           "$ref": "property/property-feature.json",
           "description": "A discrete feature assessment for a property"
         },
-        "feature-requirement": {
-          "$ref": "property/feature-requirement.json",
-          "description": "A feature-based requirement for property filtering"
-        },
         "property-error": {
           "$ref": "property/property-error.json",
           "description": "Error information for a property that could not be evaluated"
@@ -1101,6 +1155,22 @@
           "$ref": "property/base-property-source.json",
           "description": "A source of properties for a property list - supports publisher+tags, publisher+property_ids, or direct identifiers"
         },
+        "collection-list": {
+          "$ref": "collection/collection-list.json",
+          "description": "A managed collection list with optional filters for dynamic evaluation \u2014 collections represent programs/shows independent of properties"
+        },
+        "collection-list-filters": {
+          "$ref": "collection/collection-list-filters.json",
+          "description": "Filters that dynamically modify a collection list when resolved \u2014 content ratings, genres, kinds, production quality"
+        },
+        "collection-list-changed-webhook": {
+          "$ref": "collection/collection-list-changed-webhook.json",
+          "description": "Webhook payload when a collection list changes"
+        },
+        "base-collection-source": {
+          "$ref": "collection/base-collection-source.json",
+          "description": "A source of collections for a collection list - supports distribution_ids, publisher_collections, or publisher_genres"
+        },
         "content-standards": {
           "$ref": "content-standards/content-standards.json",
           "description": "Reusable content standards configuration - defines brand safety/suitability policies with scope, policy, calibration exemplars, and lifecycle dates"
@@ -1173,6 +1243,56 @@
             "description": "Response payload for delete_property_list task"
           }
         },
+        "create-collection-list": {
+          "request": {
+            "$ref": "collection/create-collection-list-request.json",
+            "description": "Request parameters for creating a new collection list"
+          },
+          "response": {
+            "$ref": "collection/create-collection-list-response.json",
+            "description": "Response payload for create_collection_list task"
+          }
+        },
+        "update-collection-list": {
+          "request": {
+            "$ref": "collection/update-collection-list-request.json",
+            "description": "Request parameters for updating an existing collection list"
+          },
+          "response": {
+            "$ref": "collection/update-collection-list-response.json",
+            "description": "Response payload for update_collection_list task"
+          }
+        },
+        "get-collection-list": {
+          "request": {
+            "$ref": "collection/get-collection-list-request.json",
+            "description": "Request parameters for retrieving a collection list with resolved collections"
+          },
+          "response": {
+            "$ref": "collection/get-collection-list-response.json",
+            "description": "Response payload for get_collection_list task"
+          }
+        },
+        "list-collection-lists": {
+          "request": {
+            "$ref": "collection/list-collection-lists-request.json",
+            "description": "Request parameters for listing collection lists"
+          },
+          "response": {
+            "$ref": "collection/list-collection-lists-response.json",
+            "description": "Response payload for list_collection_lists task"
+          }
+        },
+        "delete-collection-list": {
+          "request": {
+            "$ref": "collection/delete-collection-list-request.json",
+            "description": "Request parameters for deleting a collection list"
+          },
+          "response": {
+            "$ref": "collection/delete-collection-list-response.json",
+            "description": "Response payload for delete_collection_list task"
+          }
+        },
         "list-content-standards": {
           "request": {
             "$ref": "content-standards/list-content-standards-request.json",
@@ -1381,6 +1501,53 @@
       "file_location": "/.well-known/brand.json",
       "purpose": "Declares brand identity and agent for a domain, enabling brand discovery and verification"
     },
+    "trusted-match": {
+      "description": "Trusted Match Protocol (TMP) \u2014 real-time execution layer for activating pre-negotiated packages across any surface",
+      "supporting-schemas": {
+        "available-package": {
+          "$ref": "tmp/available-package.json",
+          "description": "A package available for contextual matching on a given impression opportunity"
+        },
+        "offer": {
+          "$ref": "tmp/offer.json",
+          "description": "Buyer's response to a context match \u2014 ranges from simple activation (package_id only) to rich offers with brand, price, summary, and creative manifest"
+        },
+        "offer-price": {
+          "$ref": "tmp/offer-price.json",
+          "description": "Lightweight price for variable-priced offers"
+        },
+        "error": {
+          "$ref": "tmp/error.json",
+          "description": "Error response from a TMP provider or router when a request cannot be processed"
+        },
+        "provider-registration": {
+          "$ref": "tmp/provider-registration.json",
+          "description": "TMP provider registration \u2014 endpoint, capabilities, and operational parameters for router configuration"
+        }
+      },
+      "operations": {
+        "context-match": {
+          "request": {
+            "$ref": "tmp/context-match-request.json",
+            "description": "Evaluate available packages against content context. Contains no user identity."
+          },
+          "response": {
+            "$ref": "tmp/context-match-response.json",
+            "description": "Offers for matched packages with optional brand, price, summary, creative manifest, and targeting signals"
+          }
+        },
+        "identity-match": {
+          "request": {
+            "$ref": "tmp/identity-match-request.json",
+            "description": "Evaluate user eligibility for packages using an opaque identity token. Contains no page context."
+          },
+          "response": {
+            "$ref": "tmp/identity-match-response.json",
+            "description": "Per-package eligibility \u2014 boolean eligible plus optional intent score"
+          }
+        }
+      }
+    },
     "brand-protocol": {
       "description": "Brand protocol schemas for identity retrieval, rights discovery, and rights acquisition",
       "schemas": {
@@ -1425,6 +1592,21 @@
         "description": "Schema that all extension files must follow. Defines valid_from, valid_until, and extension data structure."
       },
       "schemas": {}
+    },
+    "compliance": {
+      "description": "Compliance testing tool schemas. The test controller is an optional sandbox-only tool that lets comply walk full lifecycle state machines by triggering seller-side transitions deterministically.",
+      "tasks": {
+        "comply-test-controller": {
+          "request": {
+            "$ref": "compliance/comply-test-controller-request.json",
+            "description": "Request payload for the comply_test_controller tool \u2014 scenario selection and scenario-specific params"
+          },
+          "response": {
+            "$ref": "compliance/comply-test-controller-response.json",
+            "description": "Response payload \u2014 state transition results, simulation results, scenario list, or structured errors"
+          }
+        }
+      }
     }
   },
   "usage": {
diff --git a/schemas/cache/media-buy/build-creative-request.json b/schemas/cache/media-buy/build-creative-request.json
index 7038ddf53..d1ae7f0fd 100644
--- a/schemas/cache/media-buy/build-creative-request.json
+++ b/schemas/cache/media-buy/build-creative-request.json
@@ -1,119 +1,133 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Build Creative Request",
   "description": "Request to transform, generate, or retrieve a creative manifest. Supports three modes: (1) generation from a brief or seed assets, (2) transformation of an existing manifest, (3) retrieval from a creative library by creative_id. Produces target manifest(s) in the specified format(s). Provide either target_format_id for a single format or target_format_ids for multiple formats.",
+  "type": "object",
   "properties": {
-    "brand": {
-      "$ref": "../core/brand-ref.json",
-      "description": "Brand reference for creative generation. Resolved to full brand identity (colors, logos, tone) at execution time."
-    },
-    "concept_id": {
-      "description": "Creative concept containing the creative. Creative agents SHOULD assign globally unique creative_id values; when they cannot guarantee uniqueness, concept_id is REQUIRED to disambiguate.",
-      "type": "string"
-    },
-    "context": {
-      "$ref": "../core/context.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "creative_id": {
-      "description": "Reference to a creative in the agent's library. The creative agent resolves this to a manifest from its library. Use this instead of creative_manifest when retrieving an existing creative for tag generation or format adaptation.",
-      "type": "string"
+    "message": {
+      "type": "string",
+      "description": "Natural language instructions for the transformation or generation. For pure generation, this is the creative brief. For transformation, this provides guidance on how to adapt the creative. For refinement, this describes the desired changes."
     },
     "creative_manifest": {
       "$ref": "../core/creative-manifest.json",
       "description": "Creative manifest to transform or generate from. For pure generation, this should include the target format_id and any required input assets. For transformation (e.g., resizing, reformatting), this is the complete creative to adapt. When creative_id is provided, the agent resolves the creative from its library and this field is ignored."
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "creative_id": {
+      "type": "string",
+      "description": "Reference to a creative in the agent's library. The creative agent resolves this to a manifest from its library. Use this instead of creative_manifest when retrieving an existing creative for tag generation or format adaptation."
     },
-    "idempotency_key": {
-      "description": "Client-generated unique key for this request. Prevents duplicate creative generation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
-      "minLength": 16,
-      "type": "string"
+    "concept_id": {
+      "type": "string",
+      "description": "Creative concept containing the creative. Creative agents SHOULD assign globally unique creative_id values; when they cannot guarantee uniqueness, concept_id is REQUIRED to disambiguate."
     },
-    "include_preview": {
-      "description": "When true, requests the creative agent to include preview renders in the response alongside the manifest. Agents that support this return a 'preview' object in the response using the same structure as preview_creative. Agents that do not support inline preview simply omit the field. This avoids a separate preview_creative round trip for platforms that generate previews as a byproduct of building.",
-      "type": "boolean"
+    "media_buy_id": {
+      "type": "string",
+      "description": "Media buy identifier for tag generation context. When the creative agent is also the ad server, this provides the trafficking context needed to generate placement-specific tags (e.g., CM360 placement ID). Not needed when tags are generated at the creative level (most creative platforms)."
     },
-    "item_limit": {
-      "description": "Maximum number of catalog items to use when generating. When a catalog asset contains more items than this limit, the creative agent selects the top items based on relevance or catalog ordering. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets.",
-      "minimum": 1,
-      "type": "integer"
+    "package_id": {
+      "type": "string",
+      "description": "Package identifier within the media buy. Used with media_buy_id when the creative agent needs line-item-level context for tag generation. Omit to get a tag not scoped to a specific package."
     },
-    "macro_values": {
-      "additionalProperties": {
-        "type": "string"
+    "target_format_id": {
+      "$ref": "../core/format-id.json",
+      "description": "Single format ID to generate. Mutually exclusive with target_format_ids. The format definition specifies required input assets and output structure."
+    },
+    "target_format_ids": {
+      "type": "array",
+      "items": {
+        "$ref": "../core/format-id.json"
       },
-      "description": "Macro values to pre-substitute into the output manifest's assets. Keys are universal macro names (e.g., CLICK_URL, CACHEBUSTER); values are the substitution strings. The creative agent translates universal macros to its platform's native syntax. Substitution is literal \u2014 all occurrences of each macro in output assets are replaced with the provided value. The caller is responsible for URL-encoding values if the output context requires it. Macros not provided here remain as {MACRO} placeholders for the sales agent to resolve at serve time. Creative agents MUST ignore keys they do not recognize \u2014 unknown macro names are not an error.",
-      "type": "object"
+      "minItems": 1,
+      "description": "Array of format IDs to generate in a single call. Mutually exclusive with target_format_id. The creative agent produces one manifest per format. Each format definition specifies its own required input assets and output structure."
     },
-    "media_buy_id": {
-      "description": "Media buy identifier for tag generation context. When the creative agent is also the ad server, this provides the trafficking context needed to generate placement-specific tags (e.g., CM360 placement ID). Not needed when tags are generated at the creative level (most creative platforms).",
-      "type": "string"
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account reference for pricing and billing. When present, the creative agent applies account-specific pricing from the rate card, records the build against the account for billing, and can enforce account-level quotas or entitlements. Required by creative agents that charge for their services."
     },
-    "message": {
-      "description": "Natural language instructions for the transformation or generation. For pure generation, this is the creative brief. For transformation, this provides guidance on how to adapt the creative. For refinement, this describes the desired changes.",
-      "type": "string"
+    "brand": {
+      "$ref": "../core/brand-ref.json",
+      "description": "Brand reference for creative generation. Resolved to full brand identity (colors, logos, tone) at execution time."
     },
-    "package_id": {
-      "description": "Package identifier within the media buy. Used with media_buy_id when the creative agent needs line-item-level context for tag generation. Omit to get a tag not scoped to a specific package.",
-      "type": "string"
+    "quality": {
+      "$ref": "../enums/creative-quality.json",
+      "description": "Quality tier for generation. 'draft' produces fast, lower-fidelity output for iteration and review. 'production' produces full-quality output for final delivery. If omitted, the creative agent uses its own default. For non-generative transforms (e.g., format resizing), creative agents MAY ignore this field."
+    },
+    "item_limit": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum number of catalog items to use when generating. When a catalog asset contains more items than this limit, the creative agent selects the top items based on relevance or catalog ordering. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets."
+    },
+    "include_preview": {
+      "type": "boolean",
+      "description": "When true, requests the creative agent to include preview renders in the response alongside the manifest. Agents that support this return a 'preview' object in the response using the same structure as preview_creative. Agents that do not support inline preview simply omit the field. This avoids a separate preview_creative round trip for platforms that generate previews as a byproduct of building."
     },
     "preview_inputs": {
+      "type": "array",
       "description": "Input sets for preview generation when include_preview is true. Each input set defines macros and context values for one preview variant. If include_preview is true but this is omitted, the agent generates a single default preview. Only supported with target_format_id (single-format requests). Ignored when using target_format_ids \u2014 multi-format requests generate one default preview per format. Ignored when include_preview is false or omitted.",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "context_description": {
-            "description": "Natural language description of the context for AI-generated content",
-            "type": "string"
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad')"
           },
           "macros": {
+            "type": "object",
+            "description": "Macro values to use for this preview variant",
             "additionalProperties": {
               "type": "string"
-            },
-            "description": "Macro values to use for this preview variant",
-            "type": "object"
+            }
           },
-          "name": {
-            "description": "Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad')",
-            "type": "string"
+          "context_description": {
+            "type": "string",
+            "description": "Natural language description of the context for AI-generated content"
           }
         },
         "required": [
           "name"
         ],
-        "type": "object"
+        "additionalProperties": true
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "preview_quality": {
+      "$ref": "../enums/creative-quality.json",
+      "description": "Render quality for inline preview when include_preview is true. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Independent of the build quality parameter \u2014 you can build at draft quality and preview at production quality, or vice versa. If omitted, the creative agent uses its own default. Ignored when include_preview is false or omitted."
     },
     "preview_output_format": {
       "$ref": "../enums/preview-output-format.json",
       "default": "url",
       "description": "Output format for preview renders when include_preview is true. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). Ignored when include_preview is false or omitted."
     },
-    "preview_quality": {
-      "$ref": "../enums/creative-quality.json",
-      "description": "Render quality for inline preview when include_preview is true. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Independent of the build quality parameter \u2014 you can build at draft quality and preview at production quality, or vice versa. If omitted, the creative agent uses its own default. Ignored when include_preview is false or omitted."
+    "macro_values": {
+      "type": "object",
+      "description": "Macro values to pre-substitute into the output manifest's assets. Keys are universal macro names (e.g., CLICK_URL, CACHEBUSTER); values are the substitution strings. The creative agent translates universal macros to its platform's native syntax. Substitution is literal \u2014 all occurrences of each macro in output assets are replaced with the provided value. The caller is responsible for URL-encoding values if the output context requires it. Macros not provided here remain as {MACRO} placeholders for the sales agent to resolve at serve time. Creative agents MUST ignore keys they do not recognize \u2014 unknown macro names are not an error.",
+      "additionalProperties": {
+        "type": "string"
+      }
     },
-    "quality": {
-      "$ref": "../enums/creative-quality.json",
-      "description": "Quality tier for generation. 'draft' produces fast, lower-fidelity output for iteration and review. 'production' produces full-quality output for final delivery. If omitted, the creative agent uses its own default. For non-generative transforms (e.g., format resizing), creative agents MAY ignore this field."
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate creative generation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
-    "target_format_id": {
-      "$ref": "../core/format-id.json",
-      "description": "Single format ID to generate. Mutually exclusive with target_format_ids. The format definition specifies required input assets and output structure."
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "target_format_ids": {
-      "description": "Array of format IDs to generate in a single call. Mutually exclusive with target_format_id. The creative agent produces one manifest per format. Each format definition specifies its own required input assets and output structure.",
-      "items": {
-        "$ref": "../core/format-id.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Build Creative Request",
-  "type": "object"
+  "required": [
+    "idempotency_key"
+  ],
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/build-creative-response.json b/schemas/cache/media-buy/build-creative-response.json
index 8172e9c61..a97800eb7 100644
--- a/schemas/cache/media-buy/build-creative-response.json
+++ b/schemas/cache/media-buy/build-creative-response.json
@@ -1,193 +1,205 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Build Creative Response",
   "description": "Response containing the transformed or generated creative manifest(s), ready for use with preview_creative or sync_creatives. Returns either a single creative_manifest, an array of creative_manifests (for multi-format requests), or error information.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "BuildCreativeSuccess",
       "description": "Single-format success response. Returned when the request used target_format_id.",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "creative_manifest": {
           "$ref": "../core/creative-manifest.json",
           "description": "The generated or transformed creative manifest"
         },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
         "expires_at": {
-          "description": "ISO 8601 timestamp when generated asset URLs in the manifest expire. Set to the earliest expiration across all generated assets. Re-build the creative after this time to get fresh URLs.",
+          "type": "string",
           "format": "date-time",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+          "description": "ISO 8601 timestamp when generated asset URLs in the manifest expire. Set to the earliest expiration across all generated assets. Re-build the creative after this time to get fresh URLs."
         },
         "preview": {
+          "type": "object",
           "description": "Preview renders included when the request set include_preview to true and the agent supports it. Contains the same content fields as a preview_creative single response (previews, interactive_url, expires_at) minus the response_type discriminator, so clients can reuse the same preview rendering logic.",
           "properties": {
-            "expires_at": {
-              "description": "ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at.",
-              "format": "date-time",
-              "type": "string"
-            },
-            "interactive_url": {
-              "description": "Optional URL to an interactive testing page that shows all preview variants with controls to switch between them.",
-              "format": "uri",
-              "type": "string"
-            },
             "previews": {
+              "type": "array",
               "description": "Array of preview variants. Each preview corresponds to an input set from preview_inputs, or a single default preview if no inputs were provided.",
               "items": {
+                "type": "object",
                 "properties": {
+                  "preview_id": {
+                    "type": "string",
+                    "description": "Unique identifier for this preview variant"
+                  },
+                  "renders": {
+                    "type": "array",
+                    "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
+                    "items": {
+                      "$ref": "../creative/preview-render.json"
+                    },
+                    "minItems": 1
+                  },
                   "input": {
-                    "additionalProperties": true,
+                    "type": "object",
                     "description": "The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.",
                     "properties": {
-                      "context_description": {
-                        "description": "Context description applied to this variant",
-                        "type": "string"
+                      "name": {
+                        "type": "string",
+                        "description": "Human-readable name for this variant"
                       },
                       "macros": {
+                        "type": "object",
+                        "description": "Macro values applied to this variant",
                         "additionalProperties": {
                           "type": "string"
-                        },
-                        "description": "Macro values applied to this variant",
-                        "type": "object"
+                        }
                       },
-                      "name": {
-                        "description": "Human-readable name for this variant",
-                        "type": "string"
+                      "context_description": {
+                        "type": "string",
+                        "description": "Context description applied to this variant"
                       }
                     },
                     "required": [
                       "name"
                     ],
-                    "type": "object"
-                  },
-                  "preview_id": {
-                    "description": "Unique identifier for this preview variant",
-                    "type": "string"
-                  },
-                  "renders": {
-                    "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
-                    "items": {
-                      "$ref": "../creative/preview-render.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                    "additionalProperties": true
                   }
                 },
                 "required": [
                   "preview_id",
                   "renders",
                   "input"
-                ],
-                "type": "object"
+                ]
               },
-              "minItems": 1,
-              "type": "array"
+              "minItems": 1
+            },
+            "interactive_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "Optional URL to an interactive testing page that shows all preview variants with controls to switch between them."
+            },
+            "expires_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
             }
           },
           "required": [
             "previews",
             "expires_at"
-          ],
-          "type": "object"
+          ]
         },
         "preview_error": {
           "$ref": "../core/error.json",
           "description": "When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Distinguishes 'agent does not support inline preview' (preview and preview_error both absent) from 'preview generation failed' (preview absent, preview_error present). Omitted when preview succeeded or was not requested."
         },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
+        "pricing_option_id": {
+          "type": "string",
+          "description": "Which rate card pricing option was applied for this build. Present when the creative agent charges for its services. Pass this in report_usage to identify which pricing option was applied."
+        },
+        "vendor_cost": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Cost incurred for this build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time rather than build time."
+        },
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code for vendor_cost."
+        },
+        "consumption": {
+          "$ref": "../core/creative-consumption.json",
+          "description": "Structured consumption details for this build. Informational \u2014 lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth."
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "creative_manifest"
       ],
-      "title": "BuildCreativeSuccess",
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "title": "BuildCreativeMultiSuccess",
       "description": "Multi-format success response. Returned when the request used target_format_ids. Contains one manifest per requested format. Multi-format requests are atomic \u2014 all formats must succeed or the entire request fails with an error response. Array order corresponds to the target_format_ids request order.",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "creative_manifests": {
-          "description": "Array of generated creative manifests, one per requested format. Each manifest contains its own format_id identifying which format it was generated for.",
+          "type": "array",
           "items": {
             "$ref": "../core/creative-manifest.json"
           },
           "minItems": 1,
-          "type": "array"
+          "description": "Array of generated creative manifests, one per requested format. Each manifest contains its own format_id identifying which format it was generated for."
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
         },
         "expires_at": {
-          "description": "ISO 8601 timestamp when the earliest generated asset URL expires across all manifests. Re-build after this time to get fresh URLs.",
+          "type": "string",
           "format": "date-time",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
+          "description": "ISO 8601 timestamp when the earliest generated asset URL expires across all manifests. Re-build after this time to get fresh URLs."
         },
         "preview": {
+          "type": "object",
           "description": "Preview renders included when the request set include_preview to true and the agent supports it. Contains one default preview per requested format. preview_inputs is ignored for multi-format requests.",
           "properties": {
-            "expires_at": {
-              "description": "ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at.",
-              "format": "date-time",
-              "type": "string"
-            },
-            "interactive_url": {
-              "description": "Optional URL to an interactive testing page that shows all format previews with controls to switch between them.",
-              "format": "uri",
-              "type": "string"
-            },
             "previews": {
+              "type": "array",
               "description": "Array of preview entries, one per requested format. Array order matches creative_manifests. Each entry includes a format_id for explicit correlation.",
               "items": {
+                "type": "object",
                 "properties": {
+                  "preview_id": {
+                    "type": "string",
+                    "description": "Unique identifier for this preview"
+                  },
                   "format_id": {
                     "$ref": "../core/format-id.json",
                     "description": "The format this preview was generated for. Matches one of the requested target_format_ids."
                   },
+                  "renders": {
+                    "type": "array",
+                    "description": "Array of rendered pieces for this format's preview. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
+                    "items": {
+                      "$ref": "../creative/preview-render.json"
+                    },
+                    "minItems": 1
+                  },
                   "input": {
-                    "additionalProperties": true,
+                    "type": "object",
                     "description": "The input parameters that generated this preview. For multi-format responses, this is always a default input.",
                     "properties": {
-                      "context_description": {
-                        "description": "Context description applied to this preview",
-                        "type": "string"
+                      "name": {
+                        "type": "string",
+                        "description": "Human-readable name for this preview"
                       },
                       "macros": {
+                        "type": "object",
+                        "description": "Macro values applied to this preview",
                         "additionalProperties": {
                           "type": "string"
-                        },
-                        "description": "Macro values applied to this preview",
-                        "type": "object"
+                        }
                       },
-                      "name": {
-                        "description": "Human-readable name for this preview",
-                        "type": "string"
+                      "context_description": {
+                        "type": "string",
+                        "description": "Context description applied to this preview"
                       }
                     },
                     "required": [
                       "name"
                     ],
-                    "type": "object"
-                  },
-                  "preview_id": {
-                    "description": "Unique identifier for this preview",
-                    "type": "string"
-                  },
-                  "renders": {
-                    "description": "Array of rendered pieces for this format's preview. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
-                    "items": {
-                      "$ref": "../creative/preview-render.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
+                    "additionalProperties": true
                   }
                 },
                 "required": [
@@ -195,48 +207,75 @@
                   "format_id",
                   "renders",
                   "input"
-                ],
-                "type": "object"
+                ]
               },
-              "minItems": 1,
-              "type": "array"
+              "minItems": 1
+            },
+            "interactive_url": {
+              "type": "string",
+              "format": "uri",
+              "description": "Optional URL to an interactive testing page that shows all format previews with controls to switch between them."
+            },
+            "expires_at": {
+              "type": "string",
+              "format": "date-time",
+              "description": "ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
             }
           },
           "required": [
             "previews",
             "expires_at"
-          ],
-          "type": "object"
+          ]
         },
         "preview_error": {
           "$ref": "../core/error.json",
           "description": "When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Omitted when preview succeeded or was not requested."
         },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
+        "pricing_option_id": {
+          "type": "string",
+          "description": "Which rate card pricing option was applied for this build. Represents the total cost of the entire multi-format build call. Present when the creative agent charges for its services."
+        },
+        "vendor_cost": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Total cost incurred for this multi-format build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time."
+        },
+        "currency": {
+          "type": "string",
+          "pattern": "^[A-Z]{3}$",
+          "description": "ISO 4217 currency code for vendor_cost."
+        },
+        "consumption": {
+          "$ref": "../core/creative-consumption.json",
+          "description": "Structured consumption details for this build. Informational \u2014 lets the buyer verify that vendor_cost is consistent with the rate card."
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "creative_manifests"
       ],
-      "title": "BuildCreativeMultiSuccess",
-      "type": "object"
+      "additionalProperties": true
     },
     {
-      "additionalProperties": true,
+      "title": "BuildCreativeError",
       "description": "Error response - creative generation failed",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "description": "Array of errors explaining why creative generation failed",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -245,10 +284,7 @@
       "required": [
         "errors"
       ],
-      "title": "BuildCreativeError",
-      "type": "object"
+      "additionalProperties": true
     }
-  ],
-  "title": "Build Creative Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/create-media-buy-request.json b/schemas/cache/media-buy/create-media-buy-request.json
index 5043bb783..d89867bc9 100644
--- a/schemas/cache/media-buy/create-media-buy-request.json
+++ b/schemas/cache/media-buy/create-media-buy-request.json
@@ -1,138 +1,96 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "dependencies": {
-    "proposal_id": [
-      "total_budget"
-    ]
-  },
+  "title": "Create Media Buy Request",
   "description": "Request parameters for creating a media buy. Supports two modes: (1) Manual mode - provide packages array with explicit line item configurations, or (2) Proposal mode - provide proposal_id and total_budget to execute a proposal from get_products. One of packages or proposal_id must be provided.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. If a request with the same idempotency_key and account has already been processed, the seller returns the existing media buy rather than creating a duplicate. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "plan_id": {
+      "type": "string",
+      "description": "Campaign governance plan identifier. Required when the account has governance_agents. The seller includes this in the committed check_governance request so the governance agent can validate against the correct plan."
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Account to bill for this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts."
     },
-    "advertiser_industry": {
-      "$ref": "../enums/advertiser-industry.json",
-      "description": "Industry classification for this specific campaign. A brand may operate across multiple industries (brand.json industries field), but each media buy targets one. For example, a consumer health company running a wellness campaign sends 'healthcare.wellness', not 'cpg'. Sellers map this to platform-native codes (e.g., Spotify ADV categories, LinkedIn industry IDs). When omitted, sellers may infer from the brand manifest's industries field."
+    "proposal_id": {
+      "type": "string",
+      "description": "ID of a proposal from get_products to execute. When provided with total_budget, the publisher converts the proposal's allocation percentages into packages automatically. Alternative to providing packages array."
     },
-    "artifact_webhook": {
-      "$comment": "Webhook configuration for content artifact delivery - enables governance validation. Same authentication structure as reporting_webhook.",
-      "additionalProperties": true,
-      "description": "Optional webhook configuration for content artifact delivery. Used by governance agents to validate content adjacency. Seller pushes artifacts to this endpoint; orchestrator forwards to governance agent for validation.",
+    "total_budget": {
+      "type": "object",
+      "description": "Total budget for the media buy when executing a proposal. The publisher applies the proposal's allocation percentages to this amount to derive package budgets.",
       "properties": {
-        "authentication": {
-          "additionalProperties": false,
-          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
-          "properties": {
-            "credentials": {
-              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
-              "minLength": 32,
-              "type": "string"
-            },
-            "schemes": {
-              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
-              "items": {
-                "$ref": "../enums/auth-scheme.json"
-              },
-              "maxItems": 1,
-              "minItems": 1,
-              "type": "array"
-            }
-          },
-          "required": [
-            "schemes",
-            "credentials"
-          ],
-          "type": "object"
-        },
-        "batch_frequency": {
-          "description": "For batched delivery, how often to push artifacts. Required when delivery_mode is 'batched'.",
-          "enum": [
-            "hourly",
-            "daily"
-          ],
-          "type": "string"
-        },
-        "delivery_mode": {
-          "description": "How artifacts are delivered. 'realtime' pushes artifacts as impressions occur. 'batched' aggregates artifacts and pushes periodically (see batch_frequency).",
-          "enum": [
-            "realtime",
-            "batched"
-          ],
-          "type": "string"
-        },
-        "sampling_rate": {
-          "description": "Fraction of impressions to include (0-1). 1.0 = all impressions, 0.1 = 10% sample. Default: 1.0",
-          "maximum": 1,
-          "minimum": 0,
-          "type": "number"
-        },
-        "token": {
-          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
-          "minLength": 16,
-          "type": "string"
+        "amount": {
+          "type": "number",
+          "description": "Total budget amount",
+          "minimum": 0
         },
-        "url": {
-          "description": "Webhook endpoint URL for artifact delivery",
-          "format": "uri",
-          "type": "string"
+        "currency": {
+          "type": "string",
+          "description": "ISO 4217 currency code"
         }
       },
       "required": [
-        "url",
-        "authentication",
-        "delivery_mode"
+        "amount",
+        "currency"
       ],
-      "type": "object"
+      "additionalProperties": false
+    },
+    "packages": {
+      "type": "array",
+      "description": "Array of package configurations. Required when not using proposal_id. When executing a proposal, this can be omitted and packages will be derived from the proposal's allocations.",
+      "items": {
+        "$ref": "package-request.json"
+      },
+      "minItems": 1
     },
     "brand": {
       "$ref": "../core/brand-ref.json",
       "description": "Brand reference for this media buy. Resolved to full brand identity at execution time from brand.json or the registry."
     },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "end_time": {
-      "description": "Campaign end date/time in ISO 8601 format",
-      "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "idempotency_key": {
-      "description": "Client-generated unique key for this request. If a request with the same idempotency_key and account has already been processed, the seller returns the existing media buy rather than creating a duplicate. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
-      "minLength": 16,
-      "type": "string"
+    "advertiser_industry": {
+      "$ref": "../enums/advertiser-industry.json",
+      "description": "Industry classification for this specific campaign. A brand may operate across multiple industries (brand.json industries field), but each media buy targets one. For example, a consumer health company running a wellness campaign sends 'healthcare.wellness', not 'cpg'. Sellers map this to platform-native codes (e.g., Spotify ADV categories, LinkedIn industry IDs). When omitted, sellers may infer from the brand manifest's industries field."
     },
     "invoice_recipient": {
       "$ref": "../core/business-entity.json",
       "description": "Override the account's default billing entity for this specific buy. When provided, the seller invoices this entity instead. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
     },
     "io_acceptance": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Acceptance of an insertion order from a committed proposal. Required when the proposal's insertion_order has requires_signature: true. References the io_id from the proposal's insertion_order.",
       "properties": {
+        "io_id": {
+          "type": "string",
+          "description": "The io_id from the proposal's insertion_order being accepted"
+        },
         "accepted_at": {
-          "description": "ISO 8601 timestamp when the IO was accepted",
+          "type": "string",
           "format": "date-time",
-          "type": "string"
-        },
-        "io_id": {
-          "description": "The io_id from the proposal's insertion_order being accepted",
-          "type": "string"
+          "description": "ISO 8601 timestamp when the IO was accepted"
         },
         "signatory": {
+          "type": "string",
           "description": "Who accepted the IO \u2014 agent identifier or human name",
-          "maxLength": 250,
           "minLength": 1,
-          "type": "string"
+          "maxLength": 250
         },
         "signature_id": {
-          "description": "Reference to the electronic signature from the signing service, when signing_url was used",
-          "type": "string"
+          "type": "string",
+          "description": "Reference to the electronic signature from the signing service, when signing_url was used"
         }
       },
       "required": [
@@ -140,27 +98,24 @@
         "accepted_at",
         "signatory"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "packages": {
-      "description": "Array of package configurations. Required when not using proposal_id. When executing a proposal, this can be omitted and packages will be derived from the proposal's allocations.",
-      "items": {
-        "$ref": "package-request.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "po_number": {
+      "type": "string",
+      "description": "Purchase order number for tracking"
     },
-    "plan_id": {
-      "description": "Campaign governance plan identifier. Required when the account has governance_agents. The seller includes this in the committed check_governance request so the governance agent can validate against the correct plan.",
-      "type": "string"
+    "agency_estimate_number": {
+      "type": "string",
+      "maxLength": 100,
+      "description": "Agency estimate or authorization number. Primary financial reference for broadcast buys \u2014 links the order to the agency's media plan and billing system. Travels with the order and Ad-IDs through the transaction lifecycle."
     },
-    "po_number": {
-      "description": "Purchase order number for tracking",
-      "type": "string"
+    "start_time": {
+      "$ref": "../core/start-timing.json"
     },
-    "proposal_id": {
-      "description": "ID of a proposal from get_products to execute. When provided with total_budget, the publisher converts the proposal's allocation percentages into packages automatically. Alternative to providing packages array.",
-      "type": "string"
+    "end_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Campaign end date/time in ISO 8601 format"
     },
     "push_notification_config": {
       "$ref": "../core/push-notification-config.json",
@@ -170,36 +125,94 @@
       "$ref": "../core/reporting-webhook.json",
       "description": "Optional webhook configuration for automated reporting delivery"
     },
-    "start_time": {
-      "$ref": "../core/start-timing.json"
-    },
-    "total_budget": {
-      "additionalProperties": false,
-      "description": "Total budget for the media buy when executing a proposal. The publisher applies the proposal's allocation percentages to this amount to derive package budgets.",
+    "artifact_webhook": {
+      "$comment": "Webhook configuration for content artifact delivery - enables governance validation. Same authentication structure as reporting_webhook.",
+      "type": "object",
+      "description": "Optional webhook configuration for content artifact delivery. Used by governance agents to validate content adjacency. Seller pushes artifacts to this endpoint; orchestrator forwards to governance agent for validation.",
       "properties": {
-        "amount": {
-          "description": "Total budget amount",
-          "minimum": 0,
-          "type": "number"
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Webhook endpoint URL for artifact delivery"
         },
-        "currency": {
-          "description": "ISO 4217 currency code",
-          "type": "string"
+        "token": {
+          "type": "string",
+          "description": "Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.",
+          "minLength": 16
+        },
+        "authentication": {
+          "type": "object",
+          "description": "Authentication configuration for webhook delivery (A2A-compatible)",
+          "properties": {
+            "schemes": {
+              "type": "array",
+              "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+              "items": {
+                "$ref": "../enums/auth-scheme.json"
+              },
+              "minItems": 1,
+              "maxItems": 1
+            },
+            "credentials": {
+              "type": "string",
+              "description": "Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.",
+              "minLength": 32
+            }
+          },
+          "required": [
+            "schemes",
+            "credentials"
+          ],
+          "additionalProperties": false
+        },
+        "delivery_mode": {
+          "type": "string",
+          "enum": [
+            "realtime",
+            "batched"
+          ],
+          "description": "How artifacts are delivered. 'realtime' pushes artifacts as impressions occur. 'batched' aggregates artifacts and pushes periodically (see batch_frequency)."
+        },
+        "batch_frequency": {
+          "type": "string",
+          "enum": [
+            "hourly",
+            "daily"
+          ],
+          "description": "For batched delivery, how often to push artifacts. Required when delivery_mode is 'batched'."
+        },
+        "sampling_rate": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 1,
+          "description": "Fraction of impressions to include (0-1). 1.0 = all impressions, 0.1 = 10% sample. Default: 1.0"
         }
       },
       "required": [
-        "amount",
-        "currency"
+        "url",
+        "authentication",
+        "delivery_mode"
       ],
-      "type": "object"
+      "additionalProperties": true
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "account",
     "brand",
     "start_time",
     "end_time"
   ],
-  "title": "Create Media Buy Request",
-  "type": "object"
+  "dependencies": {
+    "proposal_id": [
+      "total_budget"
+    ]
+  },
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/create-media-buy-response.json b/schemas/cache/media-buy/create-media-buy-response.json
index 12fec7e7a..d39bfa83d 100644
--- a/schemas/cache/media-buy/create-media-buy-response.json
+++ b/schemas/cache/media-buy/create-media-buy-response.json
@@ -1,71 +1,50 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Media Buy Response",
   "description": "Response payload for create_media_buy task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - the media buy is either fully created or not created at all.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "CreateMediaBuySuccess",
       "description": "Success response - media buy created successfully",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
+        "media_buy_id": {
+          "type": "string",
+          "description": "Seller's unique identifier for the created media buy"
+        },
         "account": {
           "$ref": "../core/account.json",
           "description": "Account billed for this media buy. Includes advertiser, billing proxy (if any), and rate card applied."
         },
-        "confirmed_at": {
-          "description": "ISO 8601 timestamp when this media buy was confirmed by the seller. A successful create_media_buy response constitutes order confirmation.",
-          "format": "date-time",
-          "type": "string"
-        },
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "creative_deadline": {
-          "description": "ISO 8601 timestamp for creative upload deadline",
-          "format": "date-time",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
         "invoice_recipient": {
           "$ref": "../core/business-entity.json",
           "description": "Per-buy invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only)."
         },
-        "media_buy_id": {
-          "description": "Seller's unique identifier for the created media buy",
-          "type": "string"
+        "status": {
+          "$ref": "../enums/media-buy-status.json",
+          "description": "Initial media buy status. Either 'pending_creatives' (awaiting creative assets), 'pending_start' (ready to serve, waiting for flight date), or 'active' (immediate activation)."
         },
-        "packages": {
-          "description": "Array of created packages with complete state information",
-          "items": {
-            "$ref": "../core/package.json"
-          },
-          "type": "array"
+        "confirmed_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when this media buy was confirmed by the seller. A successful create_media_buy response constitutes order confirmation."
         },
-        "planned_delivery": {
-          "$ref": "../core/planned-delivery.json",
-          "description": "The seller's interpreted delivery parameters. Describes what the seller will actually run -- geo, channels, flight dates, frequency caps, and budget. Present when the account has governance_agents or when the seller chooses to provide delivery transparency."
+        "creative_deadline": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 timestamp for creative upload deadline"
         },
         "revision": {
+          "type": "integer",
           "description": "Initial revision number for this media buy. Use in subsequent update_media_buy requests for optimistic concurrency.",
-          "minimum": 1,
-          "type": "integer"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
-        },
-        "status": {
-          "$ref": "../enums/media-buy-status.json",
-          "description": "Initial media buy status. Either 'active' (immediate activation) or 'pending_activation' (awaiting platform setup)."
+          "minimum": 1
         },
         "valid_actions": {
+          "type": "array",
           "description": "Actions the buyer can perform on this media buy after creation. Saves a round-trip to get_media_buys.",
           "items": {
+            "type": "string",
             "enum": [
               "pause",
               "resume",
@@ -75,22 +54,66 @@
               "update_packages",
               "add_packages",
               "sync_creatives"
-            ],
-            "type": "string"
-          },
-          "type": "array"
+            ]
+          }
+        },
+        "packages": {
+          "type": "array",
+          "description": "Array of created packages with complete state information",
+          "items": {
+            "$ref": "../core/package.json"
+          }
+        },
+        "planned_delivery": {
+          "$ref": "../core/planned-delivery.json",
+          "description": "The seller's interpreted delivery parameters. Describes what the seller will actually run -- geo, channels, flight dates, frequency caps, and budget. Present when the account has governance_agents or when the seller chooses to provide delivery transparency."
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "media_buy_id",
         "packages"
       ],
-      "title": "CreateMediaBuySuccess",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
+      "title": "CreateMediaBuyError",
       "description": "Error response - operation failed, no media buy created",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Array of errors explaining why the operation failed",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
       "not": {
         "anyOf": [
           {
@@ -109,30 +132,7 @@
             ]
           }
         ]
-      },
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "errors": {
-          "description": "Array of errors explaining why the operation failed",
-          "items": {
-            "$ref": "../core/error.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        }
-      },
-      "required": [
-        "errors"
-      ],
-      "title": "CreateMediaBuyError",
-      "type": "object"
+      }
     }
-  ],
-  "title": "Create Media Buy Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-media-buy-delivery-request.json b/schemas/cache/media-buy/get-media-buy-delivery-request.json
index 23e69bbdf..f62bf9693 100644
--- a/schemas/cache/media-buy/get-media-buy-delivery-request.json
+++ b/schemas/cache/media-buy/get-media-buy-delivery-request.json
@@ -1,20 +1,61 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Media Buy Delivery Request",
   "description": "Request parameters for retrieving comprehensive delivery metrics",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Filter delivery data to a specific account. When omitted, returns data across all accessible accounts."
     },
+    "media_buy_ids": {
+      "type": "array",
+      "description": "Array of media buy IDs to get delivery data for",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "status_filter": {
+      "oneOf": [
+        {
+          "$ref": "../enums/media-buy-status.json"
+        },
+        {
+          "type": "array",
+          "items": {
+            "$ref": "../enums/media-buy-status.json"
+          },
+          "minItems": 1
+        }
+      ],
+      "description": "Filter by status. Can be a single status or array of statuses"
+    },
+    "start_date": {
+      "type": "string",
+      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+      "description": "Start date for reporting period (YYYY-MM-DD). When omitted along with end_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'."
+    },
+    "end_date": {
+      "type": "string",
+      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
+      "description": "End date for reporting period (YYYY-MM-DD). When omitted along with start_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'."
+    },
+    "include_package_daily_breakdown": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, include daily_breakdown arrays within each package in by_package. Useful for per-package pacing analysis and line-item monitoring. Omit or set false to reduce response size \u2014 package daily data can be large for multi-package buys over long flights."
+    },
     "attribution_window": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Attribution window to apply for conversion metrics. When provided, the seller returns conversion data using the requested lookback windows instead of their platform default. The seller echoes the applied window in the response. Sellers that do not support configurable windows ignore this field and return their default. Check get_adcp_capabilities conversion_tracking.attribution_windows for available options.",
       "properties": {
-        "model": {
-          "$ref": "../enums/attribution-model.json",
-          "description": "Attribution model to use. When omitted, the seller applies their default model."
-        },
         "post_click": {
           "allOf": [
             {
@@ -30,168 +71,133 @@
             }
           ],
           "description": "Post-view attribution window to apply."
+        },
+        "model": {
+          "$ref": "../enums/attribution-model.json",
+          "description": "Attribution model to use. When omitted, the seller applies their default model."
         }
       },
-      "type": "object"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "end_date": {
-      "description": "End date for reporting period (YYYY-MM-DD). When omitted along with start_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'.",
-      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "include_package_daily_breakdown": {
-      "default": false,
-      "description": "When true, include daily_breakdown arrays within each package in by_package. Useful for per-package pacing analysis and line-item monitoring. Omit or set false to reduce response size \u2014 package daily data can be large for multi-package buys over long flights.",
-      "type": "boolean"
-    },
-    "media_buy_ids": {
-      "description": "Array of media buy IDs to get delivery data for",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
+      "additionalProperties": true
     },
     "reporting_dimensions": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Request dimensional breakdowns in delivery reporting. Each key enables a specific breakdown dimension within by_package \u2014 include as an empty object (e.g., \"device_type\": {}) to activate with defaults. Omit entirely for no breakdowns (backward compatible). Unsupported dimensions are silently omitted from the response. Note: keyword, catalog_item, and creative breakdowns are returned automatically when the seller supports them and are not controlled by this object.",
       "properties": {
-        "audience": {
-          "additionalProperties": true,
-          "description": "Request audience segment breakdown.",
+        "geo": {
+          "type": "object",
+          "description": "Request geographic breakdown. Check reporting_capabilities.supports_geo_breakdown for available levels and systems.",
           "properties": {
+            "geo_level": {
+              "$ref": "../enums/geo-level.json",
+              "description": "Geographic granularity level for the breakdown"
+            },
+            "system": {
+              "oneOf": [
+                {
+                  "$ref": "../enums/metro-system.json"
+                },
+                {
+                  "$ref": "../enums/postal-system.json"
+                }
+              ],
+              "description": "Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Required when geo_level is 'metro' or 'postal_area'."
+            },
             "limit": {
-              "default": 25,
-              "description": "Maximum number of entries to return. Defaults to 25.",
+              "type": "integer",
               "minimum": 1,
-              "type": "integer"
+              "default": 25,
+              "description": "Maximum number of geo entries to return. Defaults to 25. When truncated, by_geo_truncated is true in the response."
             },
             "sort_by": {
               "$ref": "../enums/sort-metric.json",
-              "default": "spend",
-              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "default": "spend"
             }
           },
-          "type": "object"
+          "required": [
+            "geo_level"
+          ],
+          "additionalProperties": true
         },
-        "device_platform": {
-          "additionalProperties": true,
-          "description": "Request device platform breakdown.",
+        "device_type": {
+          "type": "object",
+          "description": "Request device type breakdown.",
           "properties": {
             "limit": {
-              "description": "Maximum number of entries to return. When omitted, all entries are returned (the enum is small and bounded).",
+              "type": "integer",
               "minimum": 1,
-              "type": "integer"
+              "description": "Maximum number of entries to return. When omitted, all entries are returned (the enum is small and bounded)."
             },
             "sort_by": {
               "$ref": "../enums/sort-metric.json",
-              "default": "spend",
-              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "default": "spend"
             }
           },
-          "type": "object"
+          "additionalProperties": true
         },
-        "device_type": {
-          "additionalProperties": true,
-          "description": "Request device type breakdown.",
+        "device_platform": {
+          "type": "object",
+          "description": "Request device platform breakdown.",
           "properties": {
             "limit": {
-              "description": "Maximum number of entries to return. When omitted, all entries are returned (the enum is small and bounded).",
+              "type": "integer",
               "minimum": 1,
-              "type": "integer"
+              "description": "Maximum number of entries to return. When omitted, all entries are returned (the enum is small and bounded)."
             },
             "sort_by": {
               "$ref": "../enums/sort-metric.json",
-              "default": "spend",
-              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "default": "spend"
             }
           },
-          "type": "object"
+          "additionalProperties": true
         },
-        "geo": {
-          "additionalProperties": true,
-          "description": "Request geographic breakdown. Check reporting_capabilities.supports_geo_breakdown for available levels and systems.",
+        "audience": {
+          "type": "object",
+          "description": "Request audience segment breakdown.",
           "properties": {
-            "geo_level": {
-              "$ref": "../enums/geo-level.json",
-              "description": "Geographic granularity level for the breakdown"
-            },
             "limit": {
-              "default": 25,
-              "description": "Maximum number of geo entries to return. Defaults to 25. When truncated, by_geo_truncated is true in the response.",
+              "type": "integer",
               "minimum": 1,
-              "type": "integer"
+              "default": 25,
+              "description": "Maximum number of entries to return. Defaults to 25."
             },
             "sort_by": {
               "$ref": "../enums/sort-metric.json",
-              "default": "spend",
-              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
-            },
-            "system": {
-              "description": "Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Required when geo_level is 'metro' or 'postal_area'.",
-              "oneOf": [
-                {
-                  "$ref": "../enums/metro-system.json"
-                },
-                {
-                  "$ref": "../enums/postal-system.json"
-                }
-              ]
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "default": "spend"
             }
           },
-          "required": [
-            "geo_level"
-          ],
-          "type": "object"
+          "additionalProperties": true
         },
         "placement": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Request placement breakdown.",
           "properties": {
             "limit": {
-              "default": 25,
-              "description": "Maximum number of entries to return. Defaults to 25.",
+              "type": "integer",
               "minimum": 1,
-              "type": "integer"
+              "default": 25,
+              "description": "Maximum number of entries to return. Defaults to 25."
             },
             "sort_by": {
               "$ref": "../enums/sort-metric.json",
-              "default": "spend",
-              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
+              "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+              "default": "spend"
             }
           },
-          "type": "object"
+          "additionalProperties": true
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "start_date": {
-      "description": "Start date for reporting period (YYYY-MM-DD). When omitted along with end_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'.",
-      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "status_filter": {
-      "description": "Filter by status. Can be a single status or array of statuses",
-      "oneOf": [
-        {
-          "$ref": "../enums/media-buy-status.json"
-        },
-        {
-          "items": {
-            "$ref": "../enums/media-buy-status.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        }
-      ]
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Media Buy Delivery Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-media-buy-delivery-response.json b/schemas/cache/media-buy/get-media-buy-delivery-response.json
index 889667ec5..048e8533a 100644
--- a/schemas/cache/media-buy/get-media-buy-delivery-response.json
+++ b/schemas/cache/media-buy/get-media-buy-delivery-response.json
@@ -1,68 +1,134 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Media Buy Delivery Response",
   "description": "Response payload for get_media_buy_delivery task",
+  "type": "object",
   "properties": {
+    "notification_type": {
+      "type": "string",
+      "enum": [
+        "scheduled",
+        "final",
+        "delayed",
+        "adjusted",
+        "window_update"
+      ],
+      "description": "Type of webhook notification (only present in webhook deliveries): scheduled = regular periodic update, final = campaign completed, delayed = data not yet available, adjusted = resending period with corrected data (same window), window_update = resending period with a wider measurement window (e.g., C3 superseding live, C7 superseding C3)"
+    },
+    "partial_data": {
+      "type": "boolean",
+      "description": "Indicates if any media buys in this webhook have missing/delayed data (only present in webhook deliveries)"
+    },
+    "unavailable_count": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of media buys with reporting_delayed or failed status (only present in webhook deliveries when partial_data is true)"
+    },
+    "sequence_number": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Sequential notification number (only present in webhook deliveries, starts at 1)"
+    },
+    "next_expected_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp for next expected notification (only present in webhook deliveries when notification_type is not 'final')"
+    },
+    "reporting_period": {
+      "type": "object",
+      "description": "Date range for the report. All periods use UTC timezone.",
+      "properties": {
+        "start": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 start timestamp in UTC (e.g., 2024-02-05T00:00:00Z)"
+        },
+        "end": {
+          "type": "string",
+          "format": "date-time",
+          "description": "ISO 8601 end timestamp in UTC (e.g., 2024-02-05T23:59:59Z)"
+        }
+      },
+      "required": [
+        "start",
+        "end"
+      ],
+      "additionalProperties": true
+    },
+    "currency": {
+      "type": "string",
+      "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$"
+    },
+    "attribution_window": {
+      "$ref": "../core/attribution-window.json",
+      "description": "Attribution methodology and lookback windows used for conversion metrics in this response. All media buys from a single seller share the same attribution methodology. Enables cross-platform comparison (e.g., Amazon 14-day click vs. Criteo 30-day click)."
+    },
     "aggregated_totals": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Combined metrics across all returned media buys. Only included in API responses (get_media_buy_delivery), not in webhook notifications.",
       "properties": {
+        "impressions": {
+          "type": "number",
+          "description": "Total impressions delivered across all media buys",
+          "minimum": 0
+        },
+        "spend": {
+          "type": "number",
+          "description": "Total amount spent across all media buys",
+          "minimum": 0
+        },
         "clicks": {
+          "type": "number",
           "description": "Total clicks across all media buys (if applicable)",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
         "completed_views": {
+          "type": "number",
           "description": "Total audio/video completions across all media buys (if applicable)",
-          "minimum": 0,
-          "type": "number"
-        },
-        "completion_rate": {
-          "description": "Aggregate completion rate across all media buys (weighted by impressions, not a simple average of per-buy rates)",
-          "maximum": 1,
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
-        "conversion_value": {
-          "description": "Total conversion value across all media buys (if applicable)",
-          "minimum": 0,
-          "type": "number"
+        "views": {
+          "type": "number",
+          "description": "Total views across all media buys (if applicable)",
+          "minimum": 0
         },
         "conversions": {
+          "type": "number",
           "description": "Total conversions across all media buys (if applicable)",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
-        "cost_per_acquisition": {
-          "description": "Aggregate cost per conversion across all media buys (total spend / total conversions)",
-          "minimum": 0,
-          "type": "number"
+        "conversion_value": {
+          "type": "number",
+          "description": "Total conversion value across all media buys (if applicable)",
+          "minimum": 0
         },
-        "frequency": {
-          "description": "Average frequency per reach unit across all media buys (impressions / reach when cross-buy deduplication is available). Only present when reach is present.",
-          "minimum": 0,
-          "type": "number"
+        "roas": {
+          "type": "number",
+          "description": "Aggregate return on ad spend across all media buys (total conversion_value / total spend)",
+          "minimum": 0
         },
-        "impressions": {
-          "description": "Total impressions delivered across all media buys",
+        "new_to_brand_rate": {
+          "type": "number",
+          "description": "Fraction of total conversions across all media buys from first-time brand buyers (weighted by conversion volume, not a simple average of per-buy rates)",
           "minimum": 0,
-          "type": "number"
+          "maximum": 1
         },
-        "media_buy_count": {
-          "description": "Number of media buys included in the response",
-          "minimum": 0,
-          "type": "integer"
+        "cost_per_acquisition": {
+          "type": "number",
+          "description": "Aggregate cost per conversion across all media buys (total spend / total conversions)",
+          "minimum": 0
         },
-        "new_to_brand_rate": {
-          "description": "Fraction of total conversions across all media buys from first-time brand buyers (weighted by conversion volume, not a simple average of per-buy rates)",
-          "maximum": 1,
+        "completion_rate": {
+          "type": "number",
+          "description": "Aggregate completion rate across all media buys (weighted by impressions, not a simple average of per-buy rates)",
           "minimum": 0,
-          "type": "number"
+          "maximum": 1
         },
         "reach": {
+          "type": "number",
           "description": "Deduplicated reach across all media buys (if the seller can deduplicate across buys; otherwise sum of per-buy reach). Only present when all media buys share the same reach_unit. Omitted when reach units are heterogeneous \u2014 use per-buy reach values instead.",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         },
         "reach_unit": {
           "allOf": [
@@ -72,20 +138,15 @@
           ],
           "description": "Unit of measurement for reach. Only present when all aggregated media buys use the same reach_unit."
         },
-        "roas": {
-          "description": "Aggregate return on ad spend across all media buys (total conversion_value / total spend)",
-          "minimum": 0,
-          "type": "number"
-        },
-        "spend": {
-          "description": "Total amount spent across all media buys",
-          "minimum": 0,
-          "type": "number"
+        "frequency": {
+          "type": "number",
+          "description": "Average frequency per reach unit across all media buys (impressions / reach when cross-buy deduplication is available). Only present when reach is present.",
+          "minimum": 0
         },
-        "views": {
-          "description": "Total views across all media buys (if applicable)",
-          "minimum": 0,
-          "type": "number"
+        "media_buy_count": {
+          "type": "integer",
+          "description": "Number of media buys included in the response",
+          "minimum": 0
         }
       },
       "required": [
@@ -93,36 +154,70 @@
         "spend",
         "media_buy_count"
       ],
-      "type": "object"
-    },
-    "attribution_window": {
-      "$ref": "../core/attribution-window.json",
-      "description": "Attribution methodology and lookback windows used for conversion metrics in this response. All media buys from a single seller share the same attribution methodology. Enables cross-platform comparison (e.g., Amazon 14-day click vs. Criteo 30-day click)."
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "currency": {
-      "description": "ISO 4217 currency code",
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "errors": {
-      "description": "Task-specific errors and warnings (e.g., missing delivery data, reporting platform issues)",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      "additionalProperties": true
     },
     "media_buy_deliveries": {
+      "type": "array",
       "description": "Array of delivery data for media buys. When used in webhook notifications, may contain multiple media buys aggregated by publisher. When used in get_media_buy_delivery API responses, typically contains requested media buys.",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
+          "media_buy_id": {
+            "type": "string",
+            "description": "Seller's media buy identifier"
+          },
+          "status": {
+            "type": "string",
+            "description": "Current media buy status. Lifecycle states use the same taxonomy as media-buy-status (`pending_creatives`, `pending_start`, `active`, `paused`, `completed`, `rejected`, `canceled`). In webhook context, reporting_delayed indicates data temporarily unavailable. `pending` is accepted as a legacy alias for pending_start.",
+            "enum": [
+              "pending_creatives",
+              "pending_start",
+              "pending",
+              "active",
+              "paused",
+              "completed",
+              "rejected",
+              "canceled",
+              "failed",
+              "reporting_delayed"
+            ]
+          },
+          "expected_availability": {
+            "type": "string",
+            "format": "date-time",
+            "description": "When delayed data is expected to be available (only present when status is reporting_delayed)"
+          },
+          "is_adjusted": {
+            "type": "boolean",
+            "description": "Indicates this delivery contains updated data for a previously reported period. Buyer should replace previous period data with these totals."
+          },
+          "pricing_model": {
+            "$ref": "../enums/pricing-model.json",
+            "description": "Pricing model used for this media buy"
+          },
+          "totals": {
+            "allOf": [
+              {
+                "$ref": "../core/delivery-metrics.json"
+              },
+              {
+                "type": "object",
+                "description": "Aggregate metrics for this media buy across all packages",
+                "properties": {
+                  "effective_rate": {
+                    "type": "number",
+                    "description": "Effective rate paid per unit based on pricing_model (e.g., actual CPM for 'cpm', actual cost per completed view for 'cpcv', actual cost per point for 'cpp')",
+                    "minimum": 0
+                  }
+                },
+                "required": [
+                  "spend"
+                ]
+              }
+            ]
+          },
           "by_package": {
+            "type": "array",
             "description": "Metrics broken down by package",
             "items": {
               "allOf": [
@@ -130,46 +225,71 @@
                   "$ref": "../core/delivery-metrics.json"
                 },
                 {
+                  "type": "object",
                   "properties": {
-                    "by_audience": {
-                      "description": "Delivery by audience segment within this package. Available when the buyer requests audience breakdown via reporting_dimensions and the seller supports it. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational.",
-                      "items": {
-                        "allOf": [
-                          {
-                            "$ref": "../core/delivery-metrics.json"
-                          },
-                          {
-                            "properties": {
-                              "audience_id": {
-                                "description": "Audience segment identifier. For 'synced' source, matches audience_id from sync_audiences. For other sources, seller-defined.",
-                                "type": "string"
-                              },
-                              "audience_name": {
-                                "description": "Human-readable audience segment name",
-                                "type": "string"
-                              },
-                              "audience_source": {
-                                "$ref": "../enums/audience-source.json",
-                                "description": "Origin of the audience segment (synced, platform, third_party, lookalike, retargeting, unknown)"
-                              }
-                            },
-                            "required": [
-                              "audience_id",
-                              "audience_source",
-                              "impressions",
-                              "spend"
-                            ],
-                            "type": "object"
-                          }
-                        ]
-                      },
-                      "type": "array"
+                    "package_id": {
+                      "type": "string",
+                      "description": "Seller's package identifier"
                     },
-                    "by_audience_truncated": {
-                      "description": "Whether by_audience was truncated. Sellers MUST return this flag whenever by_audience is present (false means the list is complete).",
-                      "type": "boolean"
+                    "pacing_index": {
+                      "type": "number",
+                      "description": "Delivery pace (1.0 = on track, <1.0 = behind, >1.0 = ahead)",
+                      "minimum": 0
+                    },
+                    "pricing_model": {
+                      "$ref": "../enums/pricing-model.json",
+                      "description": "The pricing model used for this package (e.g., cpm, cpcv, cpp). Indicates how the package is billed and which metrics are most relevant for optimization."
+                    },
+                    "rate": {
+                      "type": "number",
+                      "description": "The pricing rate for this package in the specified currency. For fixed-rate pricing, this is the agreed rate (e.g., CPM rate of 12.50 means $12.50 per 1,000 impressions). For auction-based pricing, this represents the effective rate based on actual delivery.",
+                      "minimum": 0
+                    },
+                    "currency": {
+                      "type": "string",
+                      "description": "ISO 4217 currency code (e.g., USD, EUR, GBP) for this package's pricing. Indicates the currency in which the rate and spend values are denominated. Different packages can use different currencies when supported by the publisher.",
+                      "pattern": "^[A-Z]{3}$"
+                    },
+                    "delivery_status": {
+                      "type": "string",
+                      "description": "System-reported operational state of this package. Reflects actual delivery state independent of buyer pause control.",
+                      "enum": [
+                        "delivering",
+                        "completed",
+                        "budget_exhausted",
+                        "flight_ended",
+                        "goal_met"
+                      ]
+                    },
+                    "paused": {
+                      "type": "boolean",
+                      "description": "Whether this package is currently paused by the buyer"
+                    },
+                    "is_final": {
+                      "type": "boolean",
+                      "description": "Whether this delivery data is final for the reporting period. When false, the data may be updated as measurement matures (e.g., broadcast C7 window accumulating DVR playback) or as processing completes (e.g., IVT filtering, deduplication). When true, the seller considers this data closed \u2014 no further updates for this period. Absent means the seller does not distinguish provisional from final data."
+                    },
+                    "measurement_window": {
+                      "type": "string",
+                      "maxLength": 50,
+                      "description": "Which measurement window this data represents, referencing a window_id from the product's reporting_capabilities.measurement_windows. For broadcast: 'live', 'c3', 'c7'. When absent, the data is not windowed (standard digital reporting). When present with is_final: false, a later report for the same period will provide a wider window or more complete data.",
+                      "examples": [
+                        "live",
+                        "c3",
+                        "c7"
+                      ]
+                    },
+                    "supersedes_window": {
+                      "type": "string",
+                      "maxLength": 50,
+                      "description": "Which measurement window this data replaces. Present on window_update notifications to indicate progression (e.g., 'live' when reporting C3 data that supersedes live-only numbers). Absent on the first report for a period. Buyers should replace stored data for the superseded window with this report's data.",
+                      "examples": [
+                        "live",
+                        "c3"
+                      ]
                     },
                     "by_catalog_item": {
+                      "type": "array",
                       "description": "Delivery by catalog item within this package. Available for catalog-driven packages when the seller supports item-level reporting.",
                       "items": {
                         "allOf": [
@@ -177,10 +297,11 @@
                             "$ref": "../core/delivery-metrics.json"
                           },
                           {
+                            "type": "object",
                             "properties": {
                               "content_id": {
-                                "description": "Catalog item identifier (e.g., SKU, GTIN, job_id, offering_id)",
-                                "type": "string"
+                                "type": "string",
+                                "description": "Catalog item identifier (e.g., SKU, GTIN, job_id, offering_id)"
                               },
                               "content_id_type": {
                                 "$ref": "../enums/content-id-type.json",
@@ -191,14 +312,13 @@
                               "content_id",
                               "impressions",
                               "spend"
-                            ],
-                            "type": "object"
+                            ]
                           }
                         ]
-                      },
-                      "type": "array"
+                      }
                     },
                     "by_creative": {
+                      "type": "array",
                       "description": "Metrics broken down by creative within this package. Available when the seller supports creative-level reporting.",
                       "items": {
                         "allOf": [
@@ -206,59 +326,107 @@
                             "$ref": "../core/delivery-metrics.json"
                           },
                           {
+                            "type": "object",
                             "properties": {
                               "creative_id": {
-                                "description": "Creative identifier matching the creative assignment",
-                                "type": "string"
+                                "type": "string",
+                                "description": "Creative identifier matching the creative assignment"
                               },
                               "weight": {
+                                "type": "number",
                                 "description": "Observed delivery share for this creative within the package during the reporting period, expressed as a percentage (0-100). Reflects actual delivery distribution, not a configured setting.",
-                                "maximum": 100,
                                 "minimum": 0,
-                                "type": "number"
+                                "maximum": 100
                               }
                             },
                             "required": [
                               "creative_id",
                               "impressions",
                               "spend"
-                            ],
-                            "type": "object"
+                            ]
                           }
                         ]
-                      },
-                      "type": "array"
+                      }
                     },
-                    "by_device_platform": {
-                      "description": "Delivery by operating system within this package. Available when the buyer requests device_platform breakdown via reporting_dimensions and the seller supports it. Useful for CTV campaigns where tvOS vs Roku OS vs Fire OS matters.",
+                    "by_keyword": {
+                      "type": "array",
+                      "description": "Metrics broken down by keyword within this package. One row per (keyword, match_type) pair \u2014 the same keyword with different match types appears as separate rows. Keyword-grain only: rows reflect aggregate performance of each targeted keyword, not individual search queries. Rows may not sum to package totals when a single impression is attributed to the triggering keyword only. Available for search and retail media packages when the seller supports keyword-level reporting.",
                       "items": {
                         "allOf": [
                           {
                             "$ref": "../core/delivery-metrics.json"
                           },
                           {
+                            "type": "object",
                             "properties": {
-                              "device_platform": {
-                                "$ref": "../enums/device-platform.json",
-                                "description": "Operating system platform"
+                              "keyword": {
+                                "type": "string",
+                                "description": "The targeted keyword"
+                              },
+                              "match_type": {
+                                "type": "string",
+                                "enum": [
+                                  "broad",
+                                  "phrase",
+                                  "exact"
+                                ],
+                                "description": "Match type for this keyword"
                               }
                             },
                             "required": [
-                              "device_platform",
+                              "keyword",
+                              "match_type",
                               "impressions",
                               "spend"
-                            ],
-                            "type": "object"
+                            ]
                           }
                         ]
-                      },
-                      "type": "array"
+                      }
                     },
-                    "by_device_platform_truncated": {
-                      "description": "Whether by_device_platform was truncated. Sellers MUST return this flag whenever by_device_platform is present (false means the list is complete).",
-                      "type": "boolean"
+                    "by_geo": {
+                      "type": "array",
+                      "description": "Delivery by geographic area within this package. Available when the buyer requests geo breakdown via reporting_dimensions and the seller supports it. Each dimension's rows are independent slices that should sum to the package total.",
+                      "items": {
+                        "allOf": [
+                          {
+                            "$ref": "../core/delivery-metrics.json"
+                          },
+                          {
+                            "type": "object",
+                            "properties": {
+                              "geo_level": {
+                                "$ref": "../enums/geo-level.json",
+                                "description": "Geographic level of this entry (country, region, metro, postal_area)"
+                              },
+                              "system": {
+                                "type": "string",
+                                "description": "Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Present when geo_level is 'metro' or 'postal_area'."
+                              },
+                              "geo_code": {
+                                "type": "string",
+                                "description": "Geographic code within the level and system. Country: ISO 3166-1 alpha-2 ('US'). Region: ISO 3166-2 with country prefix ('US-CA'). Metro/postal: system-specific code ('501', '10001')."
+                              },
+                              "geo_name": {
+                                "type": "string",
+                                "description": "Human-readable geographic name (e.g., 'United States', 'California', 'New York DMA')"
+                              }
+                            },
+                            "required": [
+                              "geo_level",
+                              "geo_code",
+                              "impressions",
+                              "spend"
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    "by_geo_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_geo was truncated due to the requested limit or a seller-imposed maximum. Sellers MUST return this flag whenever by_geo is present (false means the list is complete)."
                     },
                     "by_device_type": {
+                      "type": "array",
                       "description": "Delivery by device form factor within this package. Available when the buyer requests device_type breakdown via reporting_dimensions and the seller supports it.",
                       "items": {
                         "allOf": [
@@ -266,6 +434,7 @@
                             "$ref": "../core/delivery-metrics.json"
                           },
                           {
+                            "type": "object",
                             "properties": {
                               "device_type": {
                                 "$ref": "../enums/device-type.json",
@@ -276,95 +445,84 @@
                               "device_type",
                               "impressions",
                               "spend"
-                            ],
-                            "type": "object"
+                            ]
                           }
                         ]
-                      },
-                      "type": "array"
+                      }
                     },
                     "by_device_type_truncated": {
-                      "description": "Whether by_device_type was truncated. Sellers MUST return this flag whenever by_device_type is present (false means the list is complete).",
-                      "type": "boolean"
+                      "type": "boolean",
+                      "description": "Whether by_device_type was truncated. Sellers MUST return this flag whenever by_device_type is present (false means the list is complete)."
                     },
-                    "by_geo": {
-                      "description": "Delivery by geographic area within this package. Available when the buyer requests geo breakdown via reporting_dimensions and the seller supports it. Each dimension's rows are independent slices that should sum to the package total.",
+                    "by_device_platform": {
+                      "type": "array",
+                      "description": "Delivery by operating system within this package. Available when the buyer requests device_platform breakdown via reporting_dimensions and the seller supports it. Useful for CTV campaigns where tvOS vs Roku OS vs Fire OS matters.",
                       "items": {
                         "allOf": [
                           {
                             "$ref": "../core/delivery-metrics.json"
                           },
                           {
+                            "type": "object",
                             "properties": {
-                              "geo_code": {
-                                "description": "Geographic code within the level and system. Country: ISO 3166-1 alpha-2 ('US'). Region: ISO 3166-2 with country prefix ('US-CA'). Metro/postal: system-specific code ('501', '10001').",
-                                "type": "string"
-                              },
-                              "geo_level": {
-                                "$ref": "../enums/geo-level.json",
-                                "description": "Geographic level of this entry (country, region, metro, postal_area)"
-                              },
-                              "geo_name": {
-                                "description": "Human-readable geographic name (e.g., 'United States', 'California', 'New York DMA')",
-                                "type": "string"
-                              },
-                              "system": {
-                                "description": "Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Present when geo_level is 'metro' or 'postal_area'.",
-                                "type": "string"
+                              "device_platform": {
+                                "$ref": "../enums/device-platform.json",
+                                "description": "Operating system platform"
                               }
                             },
                             "required": [
-                              "geo_level",
-                              "geo_code",
+                              "device_platform",
                               "impressions",
                               "spend"
-                            ],
-                            "type": "object"
+                            ]
                           }
                         ]
-                      },
-                      "type": "array"
+                      }
                     },
-                    "by_geo_truncated": {
-                      "description": "Whether by_geo was truncated due to the requested limit or a seller-imposed maximum. Sellers MUST return this flag whenever by_geo is present (false means the list is complete).",
-                      "type": "boolean"
+                    "by_device_platform_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_device_platform was truncated. Sellers MUST return this flag whenever by_device_platform is present (false means the list is complete)."
                     },
-                    "by_keyword": {
-                      "description": "Metrics broken down by keyword within this package. One row per (keyword, match_type) pair \u2014 the same keyword with different match types appears as separate rows. Keyword-grain only: rows reflect aggregate performance of each targeted keyword, not individual search queries. Rows may not sum to package totals when a single impression is attributed to the triggering keyword only. Available for search and retail media packages when the seller supports keyword-level reporting.",
+                    "by_audience": {
+                      "type": "array",
+                      "description": "Delivery by audience segment within this package. Available when the buyer requests audience breakdown via reporting_dimensions and the seller supports it. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational.",
                       "items": {
                         "allOf": [
                           {
                             "$ref": "../core/delivery-metrics.json"
                           },
                           {
+                            "type": "object",
                             "properties": {
-                              "keyword": {
-                                "description": "The targeted keyword",
-                                "type": "string"
+                              "audience_id": {
+                                "type": "string",
+                                "description": "Audience segment identifier. For 'synced' source, matches audience_id from sync_audiences. For other sources, seller-defined."
                               },
-                              "match_type": {
-                                "description": "Match type for this keyword",
-                                "enum": [
-                                  "broad",
-                                  "phrase",
-                                  "exact"
-                                ],
-                                "type": "string"
+                              "audience_source": {
+                                "$ref": "../enums/audience-source.json",
+                                "description": "Origin of the audience segment (synced, platform, third_party, lookalike, retargeting, unknown)"
+                              },
+                              "audience_name": {
+                                "type": "string",
+                                "description": "Human-readable audience segment name"
                               }
                             },
                             "required": [
-                              "keyword",
-                              "match_type",
+                              "audience_id",
+                              "audience_source",
                               "impressions",
                               "spend"
-                            ],
-                            "type": "object"
+                            ]
                           }
                         ]
-                      },
-                      "type": "array"
+                      }
+                    },
+                    "by_audience_truncated": {
+                      "type": "boolean",
+                      "description": "Whether by_audience was truncated. Sellers MUST return this flag whenever by_audience is present (false means the list is complete)."
                     },
                     "by_placement": {
+                      "type": "array",
                       "description": "Delivery by placement within this package. Available when the buyer requests placement breakdown via reporting_dimensions and the seller supports it. Placement IDs reference the product's placements array.",
                       "items": {
                         "allOf": [
@@ -372,76 +530,71 @@
                             "$ref": "../core/delivery-metrics.json"
                           },
                           {
+                            "type": "object",
                             "properties": {
                               "placement_id": {
-                                "description": "Placement identifier from the product's placements array",
-                                "type": "string"
+                                "type": "string",
+                                "description": "Placement identifier from the product's placements array"
                               },
                               "placement_name": {
-                                "description": "Human-readable placement name",
-                                "type": "string"
+                                "type": "string",
+                                "description": "Human-readable placement name"
                               }
                             },
                             "required": [
                               "placement_id",
                               "impressions",
                               "spend"
-                            ],
-                            "type": "object"
+                            ]
                           }
                         ]
-                      },
-                      "type": "array"
+                      }
                     },
                     "by_placement_truncated": {
-                      "description": "Whether by_placement was truncated. Sellers MUST return this flag whenever by_placement is present (false means the list is complete).",
-                      "type": "boolean"
-                    },
-                    "currency": {
-                      "description": "ISO 4217 currency code (e.g., USD, EUR, GBP) for this package's pricing. Indicates the currency in which the rate and spend values are denominated. Different packages can use different currencies when supported by the publisher.",
-                      "pattern": "^[A-Z]{3}$",
-                      "type": "string"
+                      "type": "boolean",
+                      "description": "Whether by_placement was truncated. Sellers MUST return this flag whenever by_placement is present (false means the list is complete)."
                     },
                     "daily_breakdown": {
+                      "type": "array",
                       "description": "Day-by-day delivery for this package. Only present when include_package_daily_breakdown is true in the request. Enables per-package pacing analysis and line-item monitoring.",
                       "items": {
-                        "additionalProperties": true,
+                        "type": "object",
                         "properties": {
-                          "conversion_value": {
-                            "description": "Daily conversion value for this package",
-                            "minimum": 0,
-                            "type": "number"
-                          },
-                          "conversions": {
-                            "description": "Daily conversions for this package",
-                            "minimum": 0,
-                            "type": "number"
-                          },
                           "date": {
-                            "description": "Date (YYYY-MM-DD)",
+                            "type": "string",
                             "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-                            "type": "string"
+                            "description": "Date (YYYY-MM-DD)"
                           },
                           "impressions": {
+                            "type": "number",
                             "description": "Daily impressions for this package",
-                            "minimum": 0,
-                            "type": "number"
+                            "minimum": 0
                           },
-                          "new_to_brand_rate": {
-                            "description": "Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
-                            "maximum": 1,
-                            "minimum": 0,
-                            "type": "number"
+                          "spend": {
+                            "type": "number",
+                            "description": "Daily spend for this package",
+                            "minimum": 0
+                          },
+                          "conversions": {
+                            "type": "number",
+                            "description": "Daily conversions for this package",
+                            "minimum": 0
+                          },
+                          "conversion_value": {
+                            "type": "number",
+                            "description": "Daily conversion value for this package",
+                            "minimum": 0
                           },
                           "roas": {
+                            "type": "number",
                             "description": "Daily return on ad spend (conversion_value / spend)",
-                            "minimum": 0,
-                            "type": "number"
+                            "minimum": 0
                           },
-                          "spend": {
-                            "description": "Daily spend for this package",
+                          "new_to_brand_rate": {
+                            "type": "number",
+                            "description": "Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
                             "minimum": 0,
-                            "type": "number"
+                            "maximum": 1
                           }
                         },
                         "required": [
@@ -449,42 +602,8 @@
                           "impressions",
                           "spend"
                         ],
-                        "type": "object"
-                      },
-                      "type": "array"
-                    },
-                    "delivery_status": {
-                      "description": "System-reported operational state of this package. Reflects actual delivery state independent of buyer pause control.",
-                      "enum": [
-                        "delivering",
-                        "completed",
-                        "budget_exhausted",
-                        "flight_ended",
-                        "goal_met"
-                      ],
-                      "type": "string"
-                    },
-                    "pacing_index": {
-                      "description": "Delivery pace (1.0 = on track, <1.0 = behind, >1.0 = ahead)",
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "package_id": {
-                      "description": "Seller's package identifier",
-                      "type": "string"
-                    },
-                    "paused": {
-                      "description": "Whether this package is currently paused by the buyer",
-                      "type": "boolean"
-                    },
-                    "pricing_model": {
-                      "$ref": "../enums/pricing-model.json",
-                      "description": "The pricing model used for this package (e.g., cpm, cpcv, cpp). Indicates how the package is billed and which metrics are most relevant for optimization."
-                    },
-                    "rate": {
-                      "description": "The pricing rate for this package in the specified currency. For fixed-rate pricing, this is the agreed rate (e.g., CPM rate of 12.50 means $12.50 per 1,000 impressions). For auction-based pricing, this represents the effective rate based on actual delivery.",
-                      "minimum": 0,
-                      "type": "number"
+                        "additionalProperties": true
+                      }
                     }
                   },
                   "required": [
@@ -493,53 +612,52 @@
                     "pricing_model",
                     "rate",
                     "currency"
-                  ],
-                  "type": "object"
+                  ]
                 }
               ]
-            },
-            "type": "array"
+            }
           },
           "daily_breakdown": {
+            "type": "array",
             "description": "Day-by-day delivery",
             "items": {
-              "additionalProperties": true,
+              "type": "object",
               "properties": {
-                "conversion_value": {
-                  "description": "Daily conversion value",
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "conversions": {
-                  "description": "Daily conversions",
-                  "minimum": 0,
-                  "type": "number"
-                },
                 "date": {
-                  "description": "Date (YYYY-MM-DD)",
+                  "type": "string",
                   "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
-                  "type": "string"
+                  "description": "Date (YYYY-MM-DD)"
                 },
                 "impressions": {
+                  "type": "number",
                   "description": "Daily impressions",
-                  "minimum": 0,
-                  "type": "number"
+                  "minimum": 0
                 },
-                "new_to_brand_rate": {
-                  "description": "Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
-                  "maximum": 1,
-                  "minimum": 0,
-                  "type": "number"
+                "spend": {
+                  "type": "number",
+                  "description": "Daily spend",
+                  "minimum": 0
+                },
+                "conversions": {
+                  "type": "number",
+                  "description": "Daily conversions",
+                  "minimum": 0
+                },
+                "conversion_value": {
+                  "type": "number",
+                  "description": "Daily conversion value",
+                  "minimum": 0
                 },
                 "roas": {
+                  "type": "number",
                   "description": "Daily return on ad spend (conversion_value / spend)",
-                  "minimum": 0,
-                  "type": "number"
+                  "minimum": 0
                 },
-                "spend": {
-                  "description": "Daily spend",
+                "new_to_brand_rate": {
+                  "type": "number",
+                  "description": "Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)",
                   "minimum": 0,
-                  "type": "number"
+                  "maximum": 1
                 }
               },
               "required": [
@@ -547,62 +665,8 @@
                 "impressions",
                 "spend"
               ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "expected_availability": {
-            "description": "When delayed data is expected to be available (only present when status is reporting_delayed)",
-            "format": "date-time",
-            "type": "string"
-          },
-          "is_adjusted": {
-            "description": "Indicates this delivery contains updated data for a previously reported period. Buyer should replace previous period data with these totals.",
-            "type": "boolean"
-          },
-          "media_buy_id": {
-            "description": "Seller's media buy identifier",
-            "type": "string"
-          },
-          "pricing_model": {
-            "$ref": "../enums/pricing-model.json",
-            "description": "Pricing model used for this media buy"
-          },
-          "status": {
-            "description": "Current media buy status. Lifecycle states use the same taxonomy as media-buy-status (`pending_activation`, `active`, `paused`, `completed`, `rejected`, `canceled`). In webhook context, reporting_delayed indicates data temporarily unavailable. `pending` is accepted as a legacy alias for pending_activation.",
-            "enum": [
-              "pending_activation",
-              "pending",
-              "active",
-              "paused",
-              "completed",
-              "rejected",
-              "canceled",
-              "failed",
-              "reporting_delayed"
-            ],
-            "type": "string"
-          },
-          "totals": {
-            "allOf": [
-              {
-                "$ref": "../core/delivery-metrics.json"
-              },
-              {
-                "description": "Aggregate metrics for this media buy across all packages",
-                "properties": {
-                  "effective_rate": {
-                    "description": "Effective rate paid per unit based on pricing_model (e.g., actual CPM for 'cpm', actual cost per completed view for 'cpcv', actual cost per point for 'cpp')",
-                    "minimum": 0,
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "spend"
-                ],
-                "type": "object"
-              }
-            ]
+              "additionalProperties": true
+            }
           }
         },
         "required": [
@@ -611,63 +675,25 @@
           "totals",
           "by_package"
         ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "next_expected_at": {
-      "description": "ISO 8601 timestamp for next expected notification (only present in webhook deliveries when notification_type is not 'final')",
-      "format": "date-time",
-      "type": "string"
-    },
-    "notification_type": {
-      "description": "Type of webhook notification (only present in webhook deliveries): scheduled = regular periodic update, final = campaign completed, delayed = data not yet available, adjusted = resending period with updated data",
-      "enum": [
-        "scheduled",
-        "final",
-        "delayed",
-        "adjusted"
-      ],
-      "type": "string"
+        "additionalProperties": true
+      }
     },
-    "partial_data": {
-      "description": "Indicates if any media buys in this webhook have missing/delayed data (only present in webhook deliveries)",
-      "type": "boolean"
-    },
-    "reporting_period": {
-      "additionalProperties": true,
-      "description": "Date range for the report. All periods use UTC timezone.",
-      "properties": {
-        "end": {
-          "description": "ISO 8601 end timestamp in UTC (e.g., 2024-02-05T23:59:59Z)",
-          "format": "date-time",
-          "type": "string"
-        },
-        "start": {
-          "description": "ISO 8601 start timestamp in UTC (e.g., 2024-02-05T00:00:00Z)",
-          "format": "date-time",
-          "type": "string"
-        }
-      },
-      "required": [
-        "start",
-        "end"
-      ],
-      "type": "object"
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings (e.g., missing delivery data, reporting platform issues)",
+      "items": {
+        "$ref": "../core/error.json"
+      }
     },
     "sandbox": {
-      "description": "When true, this response contains simulated data from sandbox mode.",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
     },
-    "sequence_number": {
-      "description": "Sequential notification number (only present in webhook deliveries, starts at 1)",
-      "minimum": 1,
-      "type": "integer"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "unavailable_count": {
-      "description": "Number of media buys with reporting_delayed or failed status (only present in webhook deliveries when partial_data is true)",
-      "minimum": 0,
-      "type": "integer"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -675,6 +701,5 @@
     "currency",
     "media_buy_deliveries"
   ],
-  "title": "Get Media Buy Delivery Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-media-buys-request.json b/schemas/cache/media-buy/get-media-buys-request.json
index f182d0085..bf167a8b7 100644
--- a/schemas/cache/media-buy/get-media-buys-request.json
+++ b/schemas/cache/media-buy/get-media-buys-request.json
@@ -1,58 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Media Buys Request",
   "description": "Request parameters for retrieving media buy status, creative approval state, and optional delivery snapshots",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Account to retrieve media buys for. When omitted, returns data across all accessible accounts."
     },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "include_history": {
-      "default": 0,
-      "description": "When present, include the last N revision history entries for each media buy (returns min(N, available entries)). Each entry contains revision number, timestamp, actor, and a summary of what changed. Omit or set to 0 to exclude history (default). Recommended: 5-10 for monitoring, 50+ for audit.",
-      "maximum": 1000,
-      "minimum": 0,
-      "type": "integer"
-    },
-    "include_snapshot": {
-      "default": false,
-      "description": "When true, include a near-real-time delivery snapshot for each package. Snapshots reflect the latest available entity-level stats from the platform (e.g., updated every ~15 minutes on GAM, ~1 hour on batch-only platforms). The staleness_seconds field on each snapshot indicates data freshness. If a snapshot cannot be returned, package.snapshot_unavailable_reason explains why. Defaults to false.",
-      "type": "boolean"
-    },
     "media_buy_ids": {
+      "type": "array",
       "description": "Array of media buy IDs to retrieve. When omitted, returns a paginated set of accessible media buys matching status_filter.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-request.json",
-      "description": "Cursor-based pagination controls. Strongly recommended when querying broad scopes (for example, all active media buys in an account)."
+      "minItems": 1
     },
     "status_filter": {
-      "description": "Filter by status. Can be a single status or array of statuses. Defaults to [\"active\"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied.",
       "oneOf": [
         {
           "$ref": "../enums/media-buy-status.json"
         },
         {
+          "type": "array",
           "items": {
             "$ref": "../enums/media-buy-status.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
-      ]
+      ],
+      "description": "Filter by status. Can be a single status or array of statuses. Defaults to [\"active\"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied."
+    },
+    "include_snapshot": {
+      "type": "boolean",
+      "description": "When true, include a near-real-time delivery snapshot for each package. Snapshots reflect the latest available entity-level stats from the platform (e.g., updated every ~15 minutes on GAM, ~1 hour on batch-only platforms). The staleness_seconds field on each snapshot indicates data freshness. If a snapshot cannot be returned, package.snapshot_unavailable_reason explains why. Defaults to false.",
+      "default": false
+    },
+    "include_history": {
+      "type": "integer",
+      "description": "When present, include the last N revision history entries for each media buy (returns min(N, available entries)). Each entry contains revision number, timestamp, actor, and a summary of what changed. Omit or set to 0 to exclude history (default). Recommended: 5-10 for monitoring, 50+ for audit.",
+      "minimum": 0,
+      "maximum": 1000,
+      "default": 0
+    },
+    "pagination": {
+      "$ref": "../core/pagination-request.json",
+      "description": "Cursor-based pagination controls. Strongly recommended when querying broad scopes (for example, all active media buys in an account)."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Media Buys Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-media-buys-response.json b/schemas/cache/media-buy/get-media-buys-response.json
index 90a27c12f..e54fd1378 100644
--- a/schemas/cache/media-buy/get-media-buys-response.json
+++ b/schemas/cache/media-buy/get-media-buys-response.json
@@ -1,117 +1,152 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Media Buys Response",
   "description": "Response payload for get_media_buys task. Returns media buy configuration, creative approval state, and optional delivery snapshots.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "errors": {
-      "description": "Task-specific errors (e.g., media buy not found)",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
     "media_buys": {
+      "type": "array",
       "description": "Array of media buys with status, creative approval state, and optional delivery snapshots",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
+          "media_buy_id": {
+            "type": "string",
+            "description": "Seller's unique identifier for the media buy"
+          },
           "account": {
             "$ref": "../core/account.json",
             "description": "Account billed for this media buy"
           },
+          "invoice_recipient": {
+            "$ref": "../core/business-entity.json",
+            "description": "Per-buy invoice recipient when provided at creation. Confirms the seller accepted the billing override. Bank details are omitted (write-only)."
+          },
+          "status": {
+            "$ref": "../enums/media-buy-status.json"
+          },
+          "currency": {
+            "type": "string",
+            "description": "ISO 4217 currency code (e.g., USD, EUR, GBP) for monetary values at this media buy level. total_budget is always denominated in this currency. Package-level fields may override with package.currency.",
+            "pattern": "^[A-Z]{3}$"
+          },
+          "total_budget": {
+            "type": "number",
+            "description": "Total budget amount across all packages, denominated in media_buy.currency",
+            "minimum": 0
+          },
+          "start_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 flight start time for this media buy (earliest package start_time). Avoids requiring buyers to compute min(packages[].start_time)."
+          },
+          "end_time": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 flight end time for this media buy (latest package end_time). Avoids requiring buyers to compute max(packages[].end_time)."
+          },
+          "creative_deadline": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 timestamp for creative upload deadline"
+          },
+          "confirmed_at": {
+            "type": "string",
+            "format": "date-time",
+            "description": "ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation."
+          },
           "cancellation": {
-            "additionalProperties": false,
+            "type": "object",
             "description": "Cancellation metadata. Present only when status is 'canceled'.",
+            "required": [
+              "canceled_at",
+              "canceled_by"
+            ],
             "properties": {
               "canceled_at": {
-                "description": "ISO 8601 timestamp when this media buy was canceled.",
+                "type": "string",
                 "format": "date-time",
-                "type": "string"
+                "description": "ISO 8601 timestamp when this media buy was canceled."
               },
               "canceled_by": {
                 "$ref": "../enums/canceled-by.json",
                 "description": "Which party initiated the cancellation."
               },
               "reason": {
+                "type": "string",
                 "description": "Reason the media buy was canceled.",
-                "maxLength": 500,
-                "type": "string"
+                "maxLength": 500
               }
             },
-            "required": [
-              "canceled_at",
-              "canceled_by"
-            ],
-            "type": "object"
+            "additionalProperties": false
           },
-          "confirmed_at": {
-            "description": "ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation.",
-            "format": "date-time",
-            "type": "string"
+          "revision": {
+            "type": "integer",
+            "description": "Current revision number. Pass this in update_media_buy for optimistic concurrency.",
+            "minimum": 1
           },
           "created_at": {
-            "description": "Creation timestamp",
-            "format": "date-time",
-            "type": "string"
-          },
-          "creative_deadline": {
-            "description": "ISO 8601 timestamp for creative upload deadline",
+            "type": "string",
             "format": "date-time",
-            "type": "string"
+            "description": "Creation timestamp"
           },
-          "currency": {
-            "description": "ISO 4217 currency code (e.g., USD, EUR, GBP) for monetary values at this media buy level. total_budget is always denominated in this currency. Package-level fields may override with package.currency.",
-            "pattern": "^[A-Z]{3}$",
-            "type": "string"
-          },
-          "end_time": {
-            "description": "ISO 8601 flight end time for this media buy (latest package end_time). Avoids requiring buyers to compute max(packages[].end_time).",
+          "updated_at": {
+            "type": "string",
             "format": "date-time",
-            "type": "string"
+            "description": "Last update timestamp"
           },
-          "ext": {
-            "$ref": "../core/ext.json"
+          "valid_actions": {
+            "type": "array",
+            "description": "Actions the buyer can perform on this media buy in its current state. Eliminates the need for agents to internalize the state machine \u2014 the seller declares what is permitted right now.",
+            "items": {
+              "type": "string",
+              "enum": [
+                "pause",
+                "resume",
+                "cancel",
+                "update_budget",
+                "update_dates",
+                "update_packages",
+                "add_packages",
+                "sync_creatives"
+              ]
+            }
           },
           "history": {
+            "type": "array",
             "description": "Revision history entries, most recent first. Only present when include_history > 0 in the request. Each entry represents a state change or update to the media buy. Entries are append-only: sellers MUST NOT modify or delete previously emitted history entries. Callers MAY cache entries by revision number. Returns min(N, available entries) when include_history exceeds the total.",
             "items": {
-              "additionalProperties": true,
+              "type": "object",
               "properties": {
-                "action": {
-                  "description": "What happened. Standard actions: created, activated, paused, resumed, canceled, rejected, completed, updated_budget, updated_dates, updated_packages, package_canceled, package_paused, package_resumed. Sellers MAY use additional platform-specific actions (e.g., creative_approved, targeting_updated) \u2014 use ext on the history entry for structured metadata about custom actions.",
-                  "type": "string"
-                },
-                "actor": {
-                  "description": "Identity of who made the change \u2014 derived from authentication context, not caller-provided. Format is seller-defined (e.g., agent URL, user email, API key label).",
-                  "type": "string"
+                "revision": {
+                  "type": "integer",
+                  "description": "Revision number after this change was applied.",
+                  "minimum": 1
                 },
-                "ext": {
-                  "$ref": "../core/ext.json"
+                "timestamp": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "When this change occurred."
                 },
-                "package_id": {
-                  "description": "Package affected, when the change targeted a specific package.",
-                  "type": "string"
+                "actor": {
+                  "type": "string",
+                  "description": "Identity of who made the change \u2014 derived from authentication context, not caller-provided. Format is seller-defined (e.g., agent URL, user email, API key label)."
                 },
-                "revision": {
-                  "description": "Revision number after this change was applied.",
-                  "minimum": 1,
-                  "type": "integer"
+                "action": {
+                  "type": "string",
+                  "description": "What happened. Standard actions: created, activated, paused, resumed, canceled, rejected, completed, updated_budget, updated_dates, updated_packages, package_canceled, package_paused, package_resumed. Sellers MAY use additional platform-specific actions (e.g., creative_approved, targeting_updated) \u2014 use ext on the history entry for structured metadata about custom actions."
                 },
                 "summary": {
+                  "type": "string",
                   "description": "Human-readable summary of the change (e.g., 'Budget increased from $5,000 to $7,500 on pkg_abc').",
-                  "maxLength": 500,
-                  "type": "string"
+                  "maxLength": 500
                 },
-                "timestamp": {
-                  "description": "When this change occurred.",
-                  "format": "date-time",
-                  "type": "string"
+                "package_id": {
+                  "type": "string",
+                  "description": "Package affected, when the change targeted a specific package."
+                },
+                "ext": {
+                  "$ref": "../core/ext.json"
                 }
               },
               "required": [
@@ -119,150 +154,175 @@
                 "timestamp",
                 "action"
               ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "invoice_recipient": {
-            "$ref": "../core/business-entity.json",
-            "description": "Per-buy invoice recipient when provided at creation. Confirms the seller accepted the billing override. Bank details are omitted (write-only)."
-          },
-          "media_buy_id": {
-            "description": "Seller's unique identifier for the media buy",
-            "type": "string"
+              "additionalProperties": true
+            }
           },
           "packages": {
+            "type": "array",
             "description": "Packages within this media buy, augmented with creative approval status and optional delivery snapshots",
             "items": {
-              "additionalProperties": true,
+              "title": "PackageStatus",
               "description": "Current status of a package within a media buy \u2014 includes creative approval state and optional delivery snapshot. For the creation input shape, see PackageRequest. For the creation output shape, see Package.",
+              "type": "object",
               "properties": {
-                "bid_price": {
-                  "description": "Current bid price for auction-based packages. Denominated in package.currency when present, otherwise media_buy.currency. Relevant for automated price optimization loops.",
-                  "minimum": 0,
-                  "type": "number"
+                "package_id": {
+                  "type": "string",
+                  "description": "Seller's package identifier"
+                },
+                "product_id": {
+                  "type": "string",
+                  "description": "Product identifier this package is purchased from"
                 },
                 "budget": {
+                  "type": "number",
                   "description": "Package budget amount, denominated in package.currency when present, otherwise media_buy.currency",
-                  "minimum": 0,
-                  "type": "number"
+                  "minimum": 0
+                },
+                "currency": {
+                  "type": "string",
+                  "description": "ISO 4217 currency code for monetary values at this package level (budget, bid_price, snapshot.spend). When absent, inherit media_buy.currency.",
+                  "pattern": "^[A-Z]{3}$"
+                },
+                "bid_price": {
+                  "type": "number",
+                  "description": "Current bid price for auction-based packages. Denominated in package.currency when present, otherwise media_buy.currency. Relevant for automated price optimization loops.",
+                  "minimum": 0
+                },
+                "impressions": {
+                  "type": "number",
+                  "description": "Goal impression count for impression-based packages",
+                  "minimum": 0
+                },
+                "start_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "ISO 8601 flight start time for this package. Use to determine whether the package is within its scheduled flight before interpreting delivery status."
+                },
+                "end_time": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "ISO 8601 flight end time for this package"
+                },
+                "paused": {
+                  "type": "boolean",
+                  "description": "Whether this package is currently paused by the buyer"
                 },
                 "canceled": {
-                  "description": "Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated.",
-                  "type": "boolean"
+                  "type": "boolean",
+                  "description": "Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated."
                 },
                 "cancellation": {
-                  "additionalProperties": false,
+                  "type": "object",
                   "description": "Cancellation metadata. Present only when canceled is true.",
+                  "required": [
+                    "canceled_at",
+                    "canceled_by"
+                  ],
                   "properties": {
                     "canceled_at": {
-                      "description": "ISO 8601 timestamp when this package was canceled.",
+                      "type": "string",
                       "format": "date-time",
-                      "type": "string"
+                      "description": "ISO 8601 timestamp when this package was canceled."
                     },
                     "canceled_by": {
                       "$ref": "../enums/canceled-by.json",
                       "description": "Which party initiated the package cancellation."
                     },
                     "reason": {
+                      "type": "string",
                       "description": "Reason the package was canceled.",
-                      "maxLength": 500,
-                      "type": "string"
+                      "maxLength": 500
                     }
                   },
-                  "required": [
-                    "canceled_at",
-                    "canceled_by"
-                  ],
-                  "type": "object"
+                  "additionalProperties": false
+                },
+                "creative_deadline": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
                 },
                 "creative_approvals": {
+                  "type": "array",
                   "description": "Approval status for each creative assigned to this package. Absent when no creatives have been assigned.",
                   "items": {
-                    "additionalProperties": true,
+                    "type": "object",
                     "properties": {
+                      "creative_id": {
+                        "type": "string",
+                        "description": "Creative identifier"
+                      },
                       "approval_status": {
                         "$ref": "../enums/creative-approval-status.json"
                       },
-                      "creative_id": {
-                        "description": "Creative identifier",
-                        "type": "string"
-                      },
                       "rejection_reason": {
-                        "description": "Human-readable explanation of why the creative was rejected. Present only when approval_status is 'rejected'.",
-                        "type": "string"
+                        "type": "string",
+                        "description": "Human-readable explanation of why the creative was rejected. Present only when approval_status is 'rejected'."
                       }
                     },
                     "required": [
                       "creative_id",
                       "approval_status"
                     ],
-                    "type": "object"
-                  },
-                  "type": "array"
-                },
-                "creative_deadline": {
-                  "description": "ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies.",
-                  "format": "date-time",
-                  "type": "string"
-                },
-                "currency": {
-                  "description": "ISO 4217 currency code for monetary values at this package level (budget, bid_price, snapshot.spend). When absent, inherit media_buy.currency.",
-                  "pattern": "^[A-Z]{3}$",
-                  "type": "string"
-                },
-                "end_time": {
-                  "description": "ISO 8601 flight end time for this package",
-                  "format": "date-time",
-                  "type": "string"
-                },
-                "ext": {
-                  "$ref": "../core/ext.json"
+                    "additionalProperties": true
+                  }
                 },
                 "format_ids_pending": {
+                  "type": "array",
                   "description": "Format IDs from the original create_media_buy format_ids_to_provide that have not yet been uploaded via sync_creatives. When empty or absent, all required formats have been provided.",
                   "items": {
                     "$ref": "../core/format-id.json"
-                  },
-                  "type": "array"
-                },
-                "impressions": {
-                  "description": "Goal impression count for impression-based packages",
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "package_id": {
-                  "description": "Seller's package identifier",
-                  "type": "string"
+                  }
                 },
-                "paused": {
-                  "description": "Whether this package is currently paused by the buyer",
-                  "type": "boolean"
-                },
-                "product_id": {
-                  "description": "Product identifier this package is purchased from",
-                  "type": "string"
+                "snapshot_unavailable_reason": {
+                  "type": "string",
+                  "description": "Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot is unavailable for this package.",
+                  "enum": [
+                    "SNAPSHOT_UNSUPPORTED",
+                    "SNAPSHOT_TEMPORARILY_UNAVAILABLE",
+                    "SNAPSHOT_PERMISSION_DENIED"
+                  ]
                 },
                 "snapshot": {
-                  "additionalProperties": true,
+                  "type": "object",
                   "description": "Near-real-time delivery snapshot for this package. Only present when include_snapshot was true in the request. Represents the latest available entity-level stats from the platform \u2014 not billing-grade data.",
                   "properties": {
                     "as_of": {
-                      "description": "ISO 8601 timestamp when this snapshot was captured by the platform",
+                      "type": "string",
                       "format": "date-time",
-                      "type": "string"
+                      "description": "ISO 8601 timestamp when this snapshot was captured by the platform"
                     },
-                    "clicks": {
-                      "description": "Total clicks since package start (when available)",
-                      "minimum": 0,
-                      "type": "number"
+                    "staleness_seconds": {
+                      "type": "integer",
+                      "description": "Maximum age of this data in seconds. For example, 900 means the data may be up to 15 minutes old. Use this to interpret zero delivery: a value of 900 means zero impressions is likely real; a value of 14400 means reporting may still be catching up.",
+                      "minimum": 0
+                    },
+                    "impressions": {
+                      "type": "number",
+                      "description": "Total impressions delivered since package start",
+                      "minimum": 0
+                    },
+                    "spend": {
+                      "type": "number",
+                      "description": "Total spend since package start, denominated in snapshot.currency when present, otherwise package.currency or media_buy.currency",
+                      "minimum": 0
                     },
                     "currency": {
+                      "type": "string",
                       "description": "ISO 4217 currency code for spend in this snapshot. Optional when unchanged from package.currency or media_buy.currency.",
-                      "pattern": "^[A-Z]{3}$",
-                      "type": "string"
+                      "pattern": "^[A-Z]{3}$"
+                    },
+                    "clicks": {
+                      "type": "number",
+                      "description": "Total clicks since package start (when available)",
+                      "minimum": 0
+                    },
+                    "pacing_index": {
+                      "type": "number",
+                      "description": "Current delivery pace relative to expected (1.0 = on track, <1.0 = behind, >1.0 = ahead). Absent when pacing cannot be determined.",
+                      "minimum": 0
                     },
                     "delivery_status": {
+                      "type": "string",
                       "description": "Operational delivery state of this package. 'not_delivering' means the package is within its scheduled flight but has delivered zero impressions for at least one full staleness cycle \u2014 the signal for automated price adjustments or buyer alerts. Implementers must not return 'not_delivering' until at least staleness_seconds have elapsed since package activation.",
                       "enum": [
                         "delivering",
@@ -271,32 +331,11 @@
                         "budget_exhausted",
                         "flight_ended",
                         "goal_met"
-                      ],
-                      "type": "string"
+                      ]
                     },
                     "ext": {
                       "$ref": "../core/ext.json",
                       "description": "Optional extension object for seller-specific snapshot fields."
-                    },
-                    "impressions": {
-                      "description": "Total impressions delivered since package start",
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "pacing_index": {
-                      "description": "Current delivery pace relative to expected (1.0 = on track, <1.0 = behind, >1.0 = ahead). Absent when pacing cannot be determined.",
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "spend": {
-                      "description": "Total spend since package start, denominated in snapshot.currency when present, otherwise package.currency or media_buy.currency",
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "staleness_seconds": {
-                      "description": "Maximum age of this data in seconds. For example, 900 means the data may be up to 15 minutes old. Use this to interpret zero delivery: a value of 900 means zero impressions is likely real; a value of 14400 means reporting may still be catching up.",
-                      "minimum": 0,
-                      "type": "integer"
                     }
                   },
                   "required": [
@@ -305,70 +344,20 @@
                     "impressions",
                     "spend"
                   ],
-                  "type": "object"
-                },
-                "snapshot_unavailable_reason": {
-                  "description": "Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot is unavailable for this package.",
-                  "enum": [
-                    "SNAPSHOT_UNSUPPORTED",
-                    "SNAPSHOT_TEMPORARILY_UNAVAILABLE",
-                    "SNAPSHOT_PERMISSION_DENIED"
-                  ],
-                  "type": "string"
+                  "additionalProperties": true
                 },
-                "start_time": {
-                  "description": "ISO 8601 flight start time for this package. Use to determine whether the package is within its scheduled flight before interpreting delivery status.",
-                  "format": "date-time",
-                  "type": "string"
+                "ext": {
+                  "$ref": "../core/ext.json"
                 }
               },
               "required": [
                 "package_id"
               ],
-              "title": "PackageStatus",
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "revision": {
-            "description": "Current revision number. Pass this in update_media_buy for optimistic concurrency.",
-            "minimum": 1,
-            "type": "integer"
-          },
-          "start_time": {
-            "description": "ISO 8601 flight start time for this media buy (earliest package start_time). Avoids requiring buyers to compute min(packages[].start_time).",
-            "format": "date-time",
-            "type": "string"
-          },
-          "status": {
-            "$ref": "../enums/media-buy-status.json"
-          },
-          "total_budget": {
-            "description": "Total budget amount across all packages, denominated in media_buy.currency",
-            "minimum": 0,
-            "type": "number"
+              "additionalProperties": true
+            }
           },
-          "updated_at": {
-            "description": "Last update timestamp",
-            "format": "date-time",
-            "type": "string"
-          },
-          "valid_actions": {
-            "description": "Actions the buyer can perform on this media buy in its current state. Eliminates the need for agents to internalize the state machine \u2014 the seller declares what is permitted right now.",
-            "items": {
-              "enum": [
-                "pause",
-                "resume",
-                "cancel",
-                "update_budget",
-                "update_dates",
-                "update_packages",
-                "add_packages",
-                "sync_creatives"
-              ],
-              "type": "string"
-            },
-            "type": "array"
+          "ext": {
+            "$ref": "../core/ext.json"
           }
         },
         "required": [
@@ -378,22 +367,33 @@
           "total_budget",
           "packages"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": true
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors (e.g., media buy not found)",
+      "items": {
+        "$ref": "../core/error.json"
+      }
     },
     "pagination": {
       "$ref": "../core/pagination-response.json",
       "description": "Pagination metadata for the media_buys array."
     },
     "sandbox": {
-      "description": "When true, this response contains simulated data from sandbox mode.",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "media_buys"
   ],
-  "title": "Get Media Buys Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-products-request.json b/schemas/cache/media-buy/get-products-request.json
index 31c015bd6..ed565309d 100644
--- a/schemas/cache/media-buy/get-products-request.json
+++ b/schemas/cache/media-buy/get-products-request.json
@@ -1,206 +1,192 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "dependencies": {
-    "catalog": [
-      "brand"
-    ]
-  },
+  "title": "Get Products Request",
   "description": "Request parameters for discovering or refining advertising products. buying_mode declares the buyer's intent: 'brief' for curated discovery, 'wholesale' for raw catalog access, or 'refine' to iterate on known products and proposals.",
+  "type": "object",
   "properties": {
-    "account": {
-      "$ref": "../core/account-ref.json",
-      "description": "Account for product lookup. Returns products with pricing specific to this account's rate card."
-    },
-    "brand": {
-      "$ref": "../core/brand-ref.json",
-      "description": "Brand reference for product discovery context. Resolved to full brand identity at execution time."
-    },
-    "brief": {
-      "description": "Natural language description of campaign requirements. Required when buying_mode is 'brief'. Must not be provided when buying_mode is 'wholesale' or 'refine'.",
-      "type": "string"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "buying_mode": {
-      "description": "Declares buyer intent for this request. 'brief': publisher curates product recommendations from the provided brief. 'wholesale': buyer requests raw inventory to apply their own audiences \u2014 brief must not be provided, and proposals are omitted. 'refine': iterate on products and proposals from a previous get_products response using the refine array of change requests. v3 clients MUST include buying_mode. Sellers receiving requests from pre-v3 clients without buying_mode SHOULD default to 'brief'.",
+      "type": "string",
       "enum": [
         "brief",
         "wholesale",
         "refine"
       ],
-      "type": "string"
-    },
-    "catalog": {
-      "$ref": "../core/catalog.json",
-      "description": "Catalog of items the buyer wants to promote. The seller matches catalog items against its inventory and returns products where matches exist. Supports all catalog types: a job catalog finds job ad products, a product catalog finds sponsored product slots. Reference a synced catalog by catalog_id, or provide inline items."
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "fields": {
-      "description": "Specific product fields to include in the response. When omitted, all fields are returned. Use for lightweight discovery calls where only a subset of product data is needed (e.g., just IDs and pricing for comparison). Required fields (product_id, name) are always included regardless of selection.",
-      "items": {
-        "enum": [
-          "product_id",
-          "name",
-          "description",
-          "publisher_properties",
-          "channels",
-          "format_ids",
-          "placements",
-          "delivery_type",
-          "exclusivity",
-          "pricing_options",
-          "forecast",
-          "outcome_measurement",
-          "delivery_measurement",
-          "reporting_capabilities",
-          "creative_policy",
-          "catalog_types",
-          "metric_optimization",
-          "conversion_tracking",
-          "data_provider_signals",
-          "max_optimization_goals",
-          "catalog_match",
-          "collections",
-          "collection_targeting_allowed",
-          "installments",
-          "brief_relevance",
-          "expires_at",
-          "product_card",
-          "product_card_detailed",
-          "enforced_policies",
-          "trusted_match"
-        ],
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "filters": {
-      "$ref": "../core/product-filters.json"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-request.json"
-    },
-    "preferred_delivery_types": {
-      "description": "Delivery types the buyer prefers, in priority order. Unlike filters.delivery_type which excludes non-matching products, this signals preference for curation \u2014 the publisher may still include other delivery types when they match the brief well.",
-      "items": {
-        "$ref": "../enums/delivery-type.json"
-      },
-      "minItems": 1,
-      "type": "array",
-      "uniqueItems": true
+      "description": "Declares buyer intent for this request. 'brief': publisher curates product recommendations from the provided brief. 'wholesale': buyer requests raw inventory to apply their own audiences \u2014 brief must not be provided, and proposals are omitted. 'refine': iterate on products and proposals from a previous get_products response using the refine array of change requests. v3 clients MUST include buying_mode. Sellers receiving requests from pre-v3 clients without buying_mode SHOULD default to 'brief'."
     },
-    "property_list": {
-      "$ref": "../core/property-list-ref.json",
-      "description": "[AdCP 3.0] Reference to an externally managed property list. When provided, the sales agent should filter products to only those available on properties in the list."
+    "brief": {
+      "type": "string",
+      "description": "Natural language description of campaign requirements. Required when buying_mode is 'brief'. Must not be provided when buying_mode is 'wholesale' or 'refine'."
     },
     "refine": {
+      "type": "array",
       "description": "Array of change requests for iterating on products and proposals from a previous get_products response. Each entry declares a scope (request, product, or proposal) and what the buyer is asking for. Only valid when buying_mode is 'refine'. The seller responds to each entry via refinement_applied in the response, matched by position.",
+      "minItems": 1,
       "items": {
+        "type": "object",
         "oneOf": [
           {
-            "additionalProperties": false,
             "properties": {
-              "ask": {
-                "description": "What the buyer is asking for at the request level (e.g., 'more video options and less display', 'suggest how to combine these products').",
-                "minLength": 1,
-                "type": "string"
-              },
               "scope": {
+                "type": "string",
                 "const": "request",
-                "description": "Change scoped to the overall request \u2014 direction for the selection as a whole.",
-                "type": "string"
+                "description": "Change scoped to the overall request \u2014 direction for the selection as a whole."
+              },
+              "ask": {
+                "type": "string",
+                "minLength": 1,
+                "description": "What the buyer is asking for at the request level (e.g., 'more video options and less display', 'suggest how to combine these products')."
               }
             },
             "required": [
               "scope",
               "ask"
-            ]
+            ],
+            "additionalProperties": false
           },
           {
-            "additionalProperties": false,
             "properties": {
+              "scope": {
+                "type": "string",
+                "const": "product",
+                "description": "Change scoped to a specific product."
+              },
+              "id": {
+                "type": "string",
+                "minLength": 1,
+                "description": "Product ID from a previous get_products response."
+              },
               "action": {
-                "description": "'include': return this product with updated pricing and data. 'omit': exclude this product from the response. 'more_like_this': find additional products similar to this one (the original is also returned).",
+                "type": "string",
                 "enum": [
                   "include",
                   "omit",
                   "more_like_this"
                 ],
-                "type": "string"
+                "description": "'include': return this product with updated pricing and data. 'omit': exclude this product from the response. 'more_like_this': find additional products similar to this one (the original is also returned)."
               },
               "ask": {
-                "description": "What the buyer is asking for on this product. For 'include': specific changes to request (e.g., 'add 16:9 format'). For 'more_like_this': what 'similar' means (e.g., 'same audience but video format'). Ignored when action is 'omit'.",
-                "minLength": 1,
-                "type": "string"
-              },
-              "id": {
-                "description": "Product ID from a previous get_products response.",
+                "type": "string",
                 "minLength": 1,
-                "type": "string"
-              },
-              "scope": {
-                "const": "product",
-                "description": "Change scoped to a specific product.",
-                "type": "string"
+                "description": "What the buyer is asking for on this product. For 'include': specific changes to request (e.g., 'add 16:9 format'). For 'more_like_this': what 'similar' means (e.g., 'same audience but video format'). Ignored when action is 'omit'."
               }
             },
             "required": [
               "scope",
               "id",
               "action"
-            ]
+            ],
+            "additionalProperties": false
           },
           {
-            "additionalProperties": false,
             "properties": {
+              "scope": {
+                "type": "string",
+                "const": "proposal",
+                "description": "Change scoped to a specific proposal."
+              },
+              "id": {
+                "type": "string",
+                "minLength": 1,
+                "description": "Proposal ID from a previous get_products response."
+              },
               "action": {
-                "description": "'include': return this proposal with updated allocations and pricing. 'omit': exclude this proposal from the response. 'finalize': request firm pricing and inventory hold \u2014 transitions a draft proposal to committed with an expires_at hold window. May trigger seller-side approval (HITL). The buyer should not set a time_budget for finalize requests \u2014 they represent a commitment to wait for the result.",
+                "type": "string",
                 "enum": [
                   "include",
                   "omit",
                   "finalize"
                 ],
-                "type": "string"
+                "description": "'include': return this proposal with updated allocations and pricing. 'omit': exclude this proposal from the response. 'finalize': request firm pricing and inventory hold \u2014 transitions a draft proposal to committed with an expires_at hold window. May trigger seller-side approval (HITL). The buyer should not set a time_budget for finalize requests \u2014 they represent a commitment to wait for the result."
               },
               "ask": {
-                "description": "What the buyer is asking for on this proposal (e.g., 'shift more budget toward video', 'reduce total by 10%'). Ignored when action is 'omit'.",
-                "minLength": 1,
-                "type": "string"
-              },
-              "id": {
-                "description": "Proposal ID from a previous get_products response.",
+                "type": "string",
                 "minLength": 1,
-                "type": "string"
-              },
-              "scope": {
-                "const": "proposal",
-                "description": "Change scoped to a specific proposal.",
-                "type": "string"
+                "description": "What the buyer is asking for on this proposal (e.g., 'shift more budget toward video', 'reduce total by 10%'). Ignored when action is 'omit'."
               }
             },
             "required": [
               "scope",
               "id",
               "action"
-            ]
+            ],
+            "additionalProperties": false
           }
-        ],
-        "type": "object"
+        ]
+      }
+    },
+    "brand": {
+      "$ref": "../core/brand-ref.json",
+      "description": "Brand reference for product discovery context. Resolved to full brand identity at execution time."
+    },
+    "catalog": {
+      "$ref": "../core/catalog.json",
+      "description": "Catalog of items the buyer wants to promote. The seller matches catalog items against its inventory and returns products where matches exist. Supports all catalog types: a job catalog finds job ad products, a product catalog finds sponsored product slots. Reference a synced catalog by catalog_id, or provide inline items."
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account for product lookup. Returns products with pricing specific to this account's rate card."
+    },
+    "preferred_delivery_types": {
+      "type": "array",
+      "description": "Delivery types the buyer prefers, in priority order. Unlike filters.delivery_type which excludes non-matching products, this signals preference for curation \u2014 the publisher may still include other delivery types when they match the brief well.",
+      "items": {
+        "$ref": "../enums/delivery-type.json"
       },
       "minItems": 1,
-      "type": "array"
+      "uniqueItems": true
     },
-    "required_policies": {
-      "description": "Registry policy IDs that the buyer requires to be enforced for products in this response. Sellers filter products to only those that comply with or already enforce the requested policies.",
+    "filters": {
+      "$ref": "../core/product-filters.json"
+    },
+    "property_list": {
+      "$ref": "../core/property-list-ref.json",
+      "description": "[AdCP 3.0] Reference to an externally managed property list. When provided, the sales agent should filter products to only those available on properties in the list."
+    },
+    "fields": {
+      "type": "array",
+      "description": "Specific product fields to include in the response. When omitted, all fields are returned. Use for lightweight discovery calls where only a subset of product data is needed (e.g., just IDs and pricing for comparison). Required fields (product_id, name) are always included regardless of selection.",
+      "minItems": 1,
       "items": {
-        "type": "string"
-      },
-      "type": "array"
+        "type": "string",
+        "enum": [
+          "product_id",
+          "name",
+          "description",
+          "publisher_properties",
+          "channels",
+          "format_ids",
+          "placements",
+          "delivery_type",
+          "exclusivity",
+          "pricing_options",
+          "forecast",
+          "outcome_measurement",
+          "delivery_measurement",
+          "reporting_capabilities",
+          "creative_policy",
+          "catalog_types",
+          "metric_optimization",
+          "conversion_tracking",
+          "data_provider_signals",
+          "max_optimization_goals",
+          "catalog_match",
+          "collections",
+          "collection_targeting_allowed",
+          "installments",
+          "brief_relevance",
+          "expires_at",
+          "product_card",
+          "product_card_detailed",
+          "enforced_policies",
+          "trusted_match"
+        ]
+      }
     },
     "time_budget": {
       "allOf": [
@@ -209,11 +195,31 @@
         }
       ],
       "description": "Maximum time the buyer will commit to this request. The seller returns the best results achievable within this budget and does not start processes (human approvals, expensive external queries) that cannot complete in time. When omitted, the seller decides timing."
+    },
+    "pagination": {
+      "$ref": "../core/pagination-request.json"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "required_policies": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Registry policy IDs that the buyer requires to be enforced for products in this response. Sellers filter products to only those that comply with or already enforce the requested policies."
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "buying_mode"
   ],
-  "title": "Get Products Request",
-  "type": "object"
+  "dependencies": {
+    "catalog": [
+      "brand"
+    ]
+  },
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-products-response.json b/schemas/cache/media-buy/get-products-response.json
index 257683afa..1f4e0c4e5 100644
--- a/schemas/cache/media-buy/get-products-response.json
+++ b/schemas/cache/media-buy/get-products-response.json
@@ -1,130 +1,130 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Products Response",
   "description": "Response payload for get_products task",
+  "type": "object",
   "properties": {
-    "catalog_applied": {
-      "description": "Whether the seller filtered results based on the provided catalog. True if the seller matched catalog items against its inventory. Absent or false if no catalog was provided or the seller does not support catalog matching.",
-      "type": "boolean"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "errors": {
-      "description": "Task-specific errors and warnings (e.g., product filtering issues)",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "incomplete": {
-      "description": "Declares what the seller could not finish within the buyer's time_budget or due to internal limits. Each entry identifies a scope that is missing or partial. Absent when the response is fully complete.",
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "description": {
-            "description": "Human-readable explanation of what is missing and why.",
-            "type": "string"
-          },
-          "estimated_wait": {
-            "allOf": [
-              {
-                "$ref": "../core/duration.json"
-              }
-            ],
-            "description": "How much additional time would resolve this scope. Allows the buyer to decide whether to retry with a larger time_budget."
-          },
-          "scope": {
-            "description": "'products': not all inventory sources were searched. 'pricing': products returned but pricing is absent or unconfirmed. 'forecast': products returned but forecast data is absent. 'proposals': proposals were not generated or are incomplete.",
-            "enum": [
-              "products",
-              "pricing",
-              "forecast",
-              "proposals"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "scope",
-          "description"
-        ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-response.json"
-    },
     "products": {
+      "type": "array",
       "description": "Array of matching products",
       "items": {
         "$ref": "../core/product.json"
-      },
-      "type": "array"
-    },
-    "property_list_applied": {
-      "description": "[AdCP 3.0] Indicates whether property_list filtering was applied. True if the agent filtered products based on the provided property_list. Absent or false if property_list was not provided or not supported by this agent.",
-      "type": "boolean"
+      }
     },
     "proposals": {
+      "type": "array",
       "description": "Optional array of proposed media plans with budget allocations across products. Publishers include proposals when they can provide strategic guidance based on the brief. Proposals are actionable - buyers can refine them via follow-up get_products calls within the same session, or execute them directly via create_media_buy.",
       "items": {
         "$ref": "../core/proposal.json"
-      },
-      "type": "array"
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings (e.g., product filtering issues)",
+      "items": {
+        "$ref": "../core/error.json"
+      }
+    },
+    "property_list_applied": {
+      "type": "boolean",
+      "description": "[AdCP 3.0] Indicates whether property_list filtering was applied. True if the agent filtered products based on the provided property_list. Absent or false if property_list was not provided or not supported by this agent."
+    },
+    "catalog_applied": {
+      "type": "boolean",
+      "description": "Whether the seller filtered results based on the provided catalog. True if the seller matched catalog items against its inventory. Absent or false if no catalog was provided or the seller does not support catalog matching."
     },
     "refinement_applied": {
+      "type": "array",
       "description": "Seller's response to each change request in the refine array, matched by position. Each entry acknowledges whether the corresponding ask was applied, partially applied, or unable to be fulfilled. MUST contain the same number of entries in the same order as the request's refine array. Only present when the request used buying_mode: 'refine'.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
-          "id": {
-            "description": "Echoes the id from the corresponding refine entry (for product and proposal scopes).",
-            "type": "string"
-          },
-          "notes": {
-            "description": "Seller explanation of what was done, what couldn't be done, or why. Recommended when status is 'partial' or 'unable'.",
-            "type": "string"
-          },
           "scope": {
-            "description": "Echoes the scope from the corresponding refine entry. Allows orchestrators to cross-validate alignment.",
+            "type": "string",
             "enum": [
               "request",
               "product",
               "proposal"
             ],
-            "type": "string"
+            "description": "Echoes the scope from the corresponding refine entry. Allows orchestrators to cross-validate alignment."
+          },
+          "id": {
+            "type": "string",
+            "description": "Echoes the id from the corresponding refine entry (for product and proposal scopes)."
           },
           "status": {
-            "description": "'applied': the ask was fulfilled. 'partial': the ask was partially fulfilled \u2014 see notes for details. 'unable': the seller could not fulfill the ask \u2014 see notes for why.",
+            "type": "string",
             "enum": [
               "applied",
               "partial",
               "unable"
             ],
-            "type": "string"
+            "description": "'applied': the ask was fulfilled. 'partial': the ask was partially fulfilled \u2014 see notes for details. 'unable': the seller could not fulfill the ask \u2014 see notes for why."
+          },
+          "notes": {
+            "type": "string",
+            "description": "Seller explanation of what was done, what couldn't be done, or why. Recommended when status is 'partial' or 'unable'."
           }
         },
         "required": [
           "status"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": false
+      }
+    },
+    "incomplete": {
+      "type": "array",
+      "description": "Declares what the seller could not finish within the buyer's time_budget or due to internal limits. Each entry identifies a scope that is missing or partial. Absent when the response is fully complete.",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "properties": {
+          "scope": {
+            "type": "string",
+            "enum": [
+              "products",
+              "pricing",
+              "forecast",
+              "proposals"
+            ],
+            "description": "'products': not all inventory sources were searched. 'pricing': products returned but pricing is absent or unconfirmed. 'forecast': products returned but forecast data is absent. 'proposals': proposals were not generated or are incomplete."
+          },
+          "description": {
+            "type": "string",
+            "description": "Human-readable explanation of what is missing and why."
+          },
+          "estimated_wait": {
+            "allOf": [
+              {
+                "$ref": "../core/duration.json"
+              }
+            ],
+            "description": "How much additional time would resolve this scope. Allows the buyer to decide whether to retry with a larger time_budget."
+          }
+        },
+        "required": [
+          "scope",
+          "description"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "pagination": {
+      "$ref": "../core/pagination-response.json"
     },
     "sandbox": {
-      "description": "When true, this response contains simulated data from sandbox mode.",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "products"
   ],
-  "title": "Get Products Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/list-creative-formats-request.json b/schemas/cache/media-buy/list-creative-formats-request.json
index b32e3456e..84c4934f5 100644
--- a/schemas/cache/media-buy/list-creative-formats-request.json
+++ b/schemas/cache/media-buy/list-creative-formats-request.json
@@ -1,96 +1,102 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Creative Formats Request",
   "description": "Request parameters for discovering supported creative formats",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "format_ids": {
+      "type": "array",
+      "description": "Return only these specific format IDs (e.g., from get_products response)",
+      "items": {
+        "$ref": "../core/format-id.json"
+      },
+      "minItems": 1
+    },
     "asset_types": {
+      "type": "array",
       "description": "Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
       "items": {
         "$ref": "../enums/asset-content-type.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "max_width": {
+      "type": "integer",
+      "description": "Maximum width in pixels (inclusive). Returns formats where ANY render has width <= this value. For multi-render formats, matches if at least one render fits."
     },
-    "disclosure_persistence": {
-      "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
-      "items": {
-        "$ref": "../enums/disclosure-persistence.json"
-      },
-      "minItems": 1,
-      "type": "array",
-      "uniqueItems": true
+    "max_height": {
+      "type": "integer",
+      "description": "Maximum height in pixels (inclusive). Returns formats where ANY render has height <= this value. For multi-render formats, matches if at least one render fits."
+    },
+    "min_width": {
+      "type": "integer",
+      "description": "Minimum width in pixels (inclusive). Returns formats where ANY render has width >= this value."
+    },
+    "min_height": {
+      "type": "integer",
+      "description": "Minimum height in pixels (inclusive). Returns formats where ANY render has height >= this value."
+    },
+    "is_responsive": {
+      "type": "boolean",
+      "description": "Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions."
+    },
+    "name_search": {
+      "type": "string",
+      "description": "Search for formats by name (case-insensitive partial match)"
+    },
+    "wcag_level": {
+      "$ref": "../enums/wcag-level.json",
+      "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)"
     },
     "disclosure_positions": {
+      "type": "array",
       "description": "Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
       "items": {
         "$ref": "../enums/disclosure-position.json"
       },
       "minItems": 1,
-      "type": "array",
       "uniqueItems": true
     },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "format_ids": {
-      "description": "Return only these specific format IDs (e.g., from get_products response)",
+    "disclosure_persistence": {
+      "type": "array",
+      "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
       "items": {
-        "$ref": "../core/format-id.json"
+        "$ref": "../enums/disclosure-persistence.json"
       },
       "minItems": 1,
-      "type": "array"
+      "uniqueItems": true
     },
-    "input_format_ids": {
-      "description": "Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input \u2014 inspect each result's output_format_ids to see what they can produce.",
+    "output_format_ids": {
+      "type": "array",
+      "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
       "items": {
         "$ref": "../core/format-id.json"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "is_responsive": {
-      "description": "Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.",
-      "type": "boolean"
-    },
-    "max_height": {
-      "description": "Maximum height in pixels (inclusive). Returns formats where ANY render has height <= this value. For multi-render formats, matches if at least one render fits.",
-      "type": "integer"
-    },
-    "max_width": {
-      "description": "Maximum width in pixels (inclusive). Returns formats where ANY render has width <= this value. For multi-render formats, matches if at least one render fits.",
-      "type": "integer"
-    },
-    "min_height": {
-      "description": "Minimum height in pixels (inclusive). Returns formats where ANY render has height >= this value.",
-      "type": "integer"
-    },
-    "min_width": {
-      "description": "Minimum width in pixels (inclusive). Returns formats where ANY render has width >= this value.",
-      "type": "integer"
-    },
-    "name_search": {
-      "description": "Search for formats by name (case-insensitive partial match)",
-      "type": "string"
+      "minItems": 1
     },
-    "output_format_ids": {
-      "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
+    "input_format_ids": {
+      "type": "array",
+      "description": "Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input \u2014 inspect each result's output_format_ids to see what they can produce.",
       "items": {
         "$ref": "../core/format-id.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "pagination": {
       "$ref": "../core/pagination-request.json"
     },
-    "wcag_level": {
-      "$ref": "../enums/wcag-level.json",
-      "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "List Creative Formats Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/list-creative-formats-response.json b/schemas/cache/media-buy/list-creative-formats-response.json
index f31b36e23..360f60d3d 100644
--- a/schemas/cache/media-buy/list-creative-formats-response.json
+++ b/schemas/cache/media-buy/list-creative-formats-response.json
@@ -1,67 +1,67 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "List Creative Formats Response",
   "description": "Response payload for list_creative_formats task",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
+    "formats": {
+      "type": "array",
+      "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
+      "items": {
+        "$ref": "../core/format.json"
+      }
     },
     "creative_agents": {
+      "type": "array",
       "description": "Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.",
       "items": {
+        "type": "object",
         "properties": {
-          "agent_name": {
-            "description": "Human-readable name for the creative agent",
-            "type": "string"
-          },
           "agent_url": {
-            "description": "Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats.",
+            "type": "string",
             "format": "uri",
-            "type": "string"
+            "description": "Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
+          },
+          "agent_name": {
+            "type": "string",
+            "description": "Human-readable name for the creative agent"
           },
           "capabilities": {
+            "type": "array",
             "description": "Capabilities this creative agent provides",
             "items": {
               "$ref": "../enums/creative-agent-capability.json"
-            },
-            "type": "array"
+            }
           }
         },
         "required": [
           "agent_url"
-        ],
-        "type": "object"
-      },
-      "type": "array"
+        ]
+      }
     },
     "errors": {
+      "type": "array",
       "description": "Task-specific errors and warnings (e.g., format availability issues)",
       "items": {
         "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "formats": {
-      "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
-      "items": {
-        "$ref": "../core/format.json"
-      },
-      "type": "array"
+      }
     },
     "pagination": {
       "$ref": "../core/pagination-response.json"
     },
     "sandbox": {
-      "description": "When true, this response contains simulated data from sandbox mode.",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "formats"
   ],
-  "title": "List Creative Formats Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/log-event-request.json b/schemas/cache/media-buy/log-event-request.json
index 565d554a8..38fb50768 100644
--- a/schemas/cache/media-buy/log-event-request.json
+++ b/schemas/cache/media-buy/log-event-request.json
@@ -1,42 +1,50 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Log Event Request",
   "description": "Request parameters for logging marketing events",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "event_source_id": {
-      "description": "Event source configured on the account via sync_event_sources",
-      "type": "string"
+      "type": "string",
+      "description": "Event source configured on the account via sync_event_sources"
+    },
+    "test_event_code": {
+      "type": "string",
+      "description": "Test event code for validation without affecting production data. Events with this code appear in the platform's test events UI."
     },
     "events": {
+      "type": "array",
       "description": "Events to log",
       "items": {
         "$ref": "../core/event.json"
       },
-      "maxItems": 10000,
       "minItems": 1,
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      "maxItems": 10000
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for this request. Prevents duplicate event logging on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
-    "test_event_code": {
-      "description": "Test event code for validation without affecting production data. Events with this code appear in the platform's test events UI.",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "event_source_id",
     "events"
   ],
-  "title": "Log Event Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/log-event-response.json b/schemas/cache/media-buy/log-event-response.json
index b41acd9db..aec204673 100644
--- a/schemas/cache/media-buy/log-event-response.json
+++ b/schemas/cache/media-buy/log-event-response.json
@@ -1,54 +1,41 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Log Event Response",
   "description": "Response from event logging operation. Returns either event processing results OR operation-level errors.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "LogEventSuccess",
       "description": "Success response - events received and queued for processing",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "events_processed": {
-          "description": "Number of events successfully queued for processing",
-          "minimum": 0,
-          "type": "integer"
-        },
         "events_received": {
+          "type": "integer",
           "description": "Number of events received",
-          "minimum": 0,
-          "type": "integer"
+          "minimum": 0
         },
-        "ext": {
-          "$ref": "../core/ext.json"
-        },
-        "match_quality": {
-          "description": "Overall match quality score for the batch (0.0 = no matches, 1.0 = all matched)",
-          "maximum": 1,
-          "minimum": 0,
-          "type": "number"
+        "events_processed": {
+          "type": "integer",
+          "description": "Number of events successfully queued for processing",
+          "minimum": 0
         },
         "partial_failures": {
+          "type": "array",
           "description": "Events that failed validation",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
-              "code": {
-                "description": "Error code",
-                "type": "string"
-              },
               "event_id": {
-                "description": "ID of the failed event",
-                "type": "string"
+                "type": "string",
+                "description": "ID of the failed event"
+              },
+              "code": {
+                "type": "string",
+                "description": "Error code"
               },
               "message": {
-                "description": "Human-readable error message",
-                "type": "string"
+                "type": "string",
+                "description": "Human-readable error message"
               }
             },
             "required": [
@@ -56,32 +43,68 @@
               "code",
               "message"
             ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
+            "additionalProperties": true
+          }
         },
         "warnings": {
+          "type": "array",
           "description": "Non-fatal issues (low match quality, missing recommended fields, deprecation notices)",
           "items": {
             "type": "string"
-          },
-          "type": "array"
+          }
+        },
+        "match_quality": {
+          "type": "number",
+          "description": "Overall match quality score for the batch (0.0 = no matches, 1.0 = all matched)",
+          "minimum": 0,
+          "maximum": 1
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "events_received",
         "events_processed"
       ],
-      "title": "LogEventSuccess",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
+      "title": "LogEventError",
       "description": "Error response - request failed entirely",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
       "not": {
         "anyOf": [
           {
@@ -100,30 +123,7 @@
             ]
           }
         ]
-      },
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "errors": {
-          "description": "Operation-level errors",
-          "items": {
-            "$ref": "../core/error.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        }
-      },
-      "required": [
-        "errors"
-      ],
-      "title": "LogEventError",
-      "type": "object"
+      }
     }
-  ],
-  "title": "Log Event Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/package-request.json b/schemas/cache/media-buy/package-request.json
index 641c62976..1fcaf3ac7 100644
--- a/schemas/cache/media-buy/package-request.json
+++ b/schemas/cache/media-buy/package-request.json
@@ -1,100 +1,124 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Package Request",
   "description": "Package configuration for media buy creation",
+  "type": "object",
   "properties": {
-    "bid_price": {
-      "description": "Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
-      "minimum": 0,
-      "type": "number"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "budget": {
-      "description": "Budget allocation for this package in the media buy's currency",
-      "minimum": 0,
-      "type": "number"
+    "product_id": {
+      "type": "string",
+      "description": "Product ID for this package"
     },
-    "catalogs": {
-      "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.",
+    "format_ids": {
+      "type": "array",
+      "description": "Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.",
       "items": {
-        "$ref": "../core/catalog.json"
+        "$ref": "../core/format-id.json"
       },
-      "type": "array"
+      "minItems": 1
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "budget": {
+      "type": "number",
+      "description": "Budget allocation for this package in the media buy's currency",
+      "minimum": 0
     },
-    "creative_assignments": {
-      "description": "Assign existing library creatives to this package with optional weights and placement targeting",
-      "items": {
-        "$ref": "../core/creative-assignment.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "pacing": {
+      "$ref": "../enums/pacing.json"
     },
-    "creatives": {
-      "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
-      "items": {
-        "$ref": "../core/creative-asset.json"
+    "pricing_option_id": {
+      "type": "string",
+      "description": "ID of the selected pricing option from the product's pricing_options array"
+    },
+    "bid_price": {
+      "type": "number",
+      "description": "Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+      "minimum": 0
+    },
+    "impressions": {
+      "type": "number",
+      "description": "Impression goal for this package",
+      "minimum": 0
+    },
+    "start_time": {
+      "type": "string",
+      "format": "date-time",
+      "not": {
+        "const": "asap"
       },
-      "maxItems": 100,
-      "minItems": 1,
-      "type": "array"
+      "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
     },
     "end_time": {
-      "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range.",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "paused": {
+      "type": "boolean",
+      "description": "Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.",
+      "default": false
     },
-    "format_ids": {
-      "description": "Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.",
+    "catalogs": {
+      "type": "array",
+      "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.",
       "items": {
-        "$ref": "../core/format-id.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "impressions": {
-      "description": "Impression goal for this package",
-      "minimum": 0,
-      "type": "number"
+        "$ref": "../core/catalog.json"
+      }
     },
     "optimization_goals": {
+      "type": "array",
       "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
       "items": {
         "$ref": "../core/optimization-goal.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "pacing": {
-      "$ref": "../enums/pacing.json"
+    "targeting_overlay": {
+      "$ref": "../core/targeting.json"
     },
-    "paused": {
-      "default": false,
-      "description": "Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.",
-      "type": "boolean"
+    "measurement_terms": {
+      "$ref": "../core/measurement-terms.json",
+      "description": "Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply."
     },
-    "pricing_option_id": {
-      "description": "ID of the selected pricing option from the product's pricing_options array",
-      "type": "string"
+    "performance_standards": {
+      "type": "array",
+      "description": "Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+      "items": {
+        "$ref": "../core/performance-standard.json"
+      },
+      "minItems": 1
     },
-    "product_id": {
-      "description": "Product ID for this package",
-      "type": "string"
+    "creative_assignments": {
+      "type": "array",
+      "description": "Assign existing library creatives to this package with optional weights and placement targeting",
+      "items": {
+        "$ref": "../core/creative-assignment.json"
+      },
+      "minItems": 1
     },
-    "start_time": {
-      "description": "Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range.",
-      "format": "date-time",
-      "not": {
-        "const": "asap"
+    "creatives": {
+      "type": "array",
+      "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
+      "items": {
+        "$ref": "../core/creative-asset.json"
       },
-      "type": "string"
+      "minItems": 1,
+      "maxItems": 100
     },
-    "targeting_overlay": {
-      "$ref": "../core/targeting.json"
+    "agency_estimate_number": {
+      "type": "string",
+      "maxLength": 100,
+      "description": "Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy)."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -102,6 +126,5 @@
     "budget",
     "pricing_option_id"
   ],
-  "title": "Package Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/package-update.json b/schemas/cache/media-buy/package-update.json
index 13b5c7b1c..2207d37d6 100644
--- a/schemas/cache/media-buy/package-update.json
+++ b/schemas/cache/media-buy/package-update.json
@@ -1,224 +1,224 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Package Update",
   "description": "Package update configuration for update_media_buy. Identifies package by package_id and specifies fields to modify. Fields not present are left unchanged. Note: product_id, format_ids, and pricing_option_id cannot be changed after creation.",
+  "type": "object",
   "properties": {
-    "bid_price": {
-      "description": "Updated bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
-      "minimum": 0,
-      "type": "number"
+    "package_id": {
+      "type": "string",
+      "description": "Seller's ID of package to update"
     },
     "budget": {
+      "type": "number",
       "description": "Updated budget allocation for this package in the currency specified by the pricing option",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
+    },
+    "pacing": {
+      "$ref": "../enums/pacing.json"
+    },
+    "bid_price": {
+      "type": "number",
+      "description": "Updated bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+      "minimum": 0
+    },
+    "impressions": {
+      "type": "number",
+      "description": "Updated impression goal for this package",
+      "minimum": 0
+    },
+    "start_time": {
+      "type": "string",
+      "format": "date-time",
+      "not": {
+        "const": "asap"
+      },
+      "description": "Updated flight start date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+    },
+    "end_time": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Updated flight end date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+    },
+    "paused": {
+      "type": "boolean",
+      "description": "Pause/resume specific package (true = paused, false = active)"
     },
     "canceled": {
-      "const": true,
+      "type": "boolean",
       "description": "Cancel this specific package. Cancellation is irreversible \u2014 canceled packages stop delivery and cannot be reactivated. Sellers MAY reject with NOT_CANCELLABLE.",
-      "type": "boolean"
+      "const": true
     },
     "cancellation_reason": {
+      "type": "string",
       "description": "Reason for canceling this package.",
-      "maxLength": 500,
-      "type": "string"
+      "maxLength": 500
     },
     "catalogs": {
+      "type": "array",
       "description": "Replace the catalogs this package promotes. Uses replacement semantics \u2014 the provided array replaces the current list. Omit to leave catalogs unchanged.",
       "items": {
         "$ref": "../core/catalog.json"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "creative_assignments": {
-      "description": "Replace creative assignments for this package with optional weights and placement targeting. Uses replacement semantics - omit to leave assignments unchanged.",
-      "items": {
-        "$ref": "../core/creative-assignment.json"
-      },
-      "type": "array"
+      "minItems": 1
     },
-    "creatives": {
-      "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
+    "optimization_goals": {
+      "type": "array",
+      "description": "Replace all optimization goals for this package. Uses replacement semantics \u2014 omit to leave goals unchanged.",
       "items": {
-        "$ref": "../core/creative-asset.json"
+        "$ref": "../core/optimization-goal.json"
       },
-      "maxItems": 100,
-      "minItems": 1,
-      "type": "array"
-    },
-    "end_time": {
-      "description": "Updated flight end date/time for this package in ISO 8601 format. Must fall within the media buy's date range.",
-      "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      "minItems": 1
     },
-    "impressions": {
-      "description": "Updated impression goal for this package",
-      "minimum": 0,
-      "type": "number"
+    "targeting_overlay": {
+      "$ref": "../core/targeting.json",
+      "description": "Targeting overlay to apply to this package. Uses replacement semantics \u2014 the full overlay replaces the previous one. Omit to leave targeting unchanged. For keyword and negative keyword updates, prefer the incremental operations (keyword_targets_add, keyword_targets_remove, negative_keywords_add, negative_keywords_remove) which avoid replacing the full overlay. Sellers SHOULD return a validation error if targeting_overlay.keyword_targets is present in the same request as keyword_targets_add or keyword_targets_remove, and likewise for negative_keywords."
     },
     "keyword_targets_add": {
+      "type": "array",
       "description": "Keyword targets to add or update on this package. Upserts by (keyword, match_type) identity: if the pair already exists, its bid_price is updated; if not, a new keyword target is added. Use targeting_overlay.keyword_targets in create_media_buy to set the initial list.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
-          "bid_price": {
-            "description": "Per-keyword bid price. Inherits currency and max_bid interpretation from the package's pricing option.",
-            "minimum": 0,
-            "type": "number"
-          },
           "keyword": {
-            "description": "The keyword to target",
+            "type": "string",
             "minLength": 1,
-            "type": "string"
+            "description": "The keyword to target"
           },
           "match_type": {
-            "description": "Match type for this keyword",
+            "type": "string",
             "enum": [
               "broad",
               "phrase",
               "exact"
             ],
-            "type": "string"
+            "description": "Match type for this keyword"
+          },
+          "bid_price": {
+            "type": "number",
+            "minimum": 0,
+            "description": "Per-keyword bid price. Inherits currency and max_bid interpretation from the package's pricing option."
           }
         },
         "required": [
           "keyword",
           "match_type"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "keyword_targets_remove": {
+      "type": "array",
       "description": "Keyword targets to remove from this package. Removes matching (keyword, match_type) pairs. If a specified pair is not present, sellers SHOULD treat it as a no-op for that entry.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "keyword": {
-            "description": "The keyword to stop targeting",
+            "type": "string",
             "minLength": 1,
-            "type": "string"
+            "description": "The keyword to stop targeting"
           },
           "match_type": {
-            "description": "Match type to remove",
+            "type": "string",
             "enum": [
               "broad",
               "phrase",
               "exact"
             ],
-            "type": "string"
+            "description": "Match type to remove"
           }
         },
         "required": [
           "keyword",
           "match_type"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "negative_keywords_add": {
+      "type": "array",
       "description": "Negative keywords to add to this package. Appends to the existing negative keyword list \u2014 does not replace it. If a keyword+match_type pair already exists, sellers SHOULD treat it as a no-op for that entry. Use targeting_overlay.negative_keywords in create_media_buy to set the initial list.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "keyword": {
-            "description": "The keyword to exclude",
+            "type": "string",
             "minLength": 1,
-            "type": "string"
+            "description": "The keyword to exclude"
           },
           "match_type": {
-            "description": "Match type for exclusion",
+            "type": "string",
             "enum": [
               "broad",
               "phrase",
               "exact"
             ],
-            "type": "string"
+            "description": "Match type for exclusion"
           }
         },
         "required": [
           "keyword",
           "match_type"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "negative_keywords_remove": {
+      "type": "array",
       "description": "Negative keywords to remove from this package. Removes matching keyword+match_type pairs from the existing list. If a specified pair is not present, sellers SHOULD treat it as a no-op for that entry.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "keyword": {
-            "description": "The keyword to stop excluding",
+            "type": "string",
             "minLength": 1,
-            "type": "string"
+            "description": "The keyword to stop excluding"
           },
           "match_type": {
-            "description": "Match type to remove",
+            "type": "string",
             "enum": [
               "broad",
               "phrase",
               "exact"
             ],
-            "type": "string"
+            "description": "Match type to remove"
           }
         },
         "required": [
           "keyword",
           "match_type"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "optimization_goals": {
-      "description": "Replace all optimization goals for this package. Uses replacement semantics \u2014 omit to leave goals unchanged.",
+    "creative_assignments": {
+      "type": "array",
+      "description": "Replace creative assignments for this package with optional weights and placement targeting. Uses replacement semantics - omit to leave assignments unchanged.",
       "items": {
-        "$ref": "../core/optimization-goal.json"
+        "$ref": "../core/creative-assignment.json"
+      }
+    },
+    "creatives": {
+      "type": "array",
+      "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
+      "items": {
+        "$ref": "../core/creative-asset.json"
       },
       "minItems": 1,
-      "type": "array"
-    },
-    "pacing": {
-      "$ref": "../enums/pacing.json"
+      "maxItems": 100
     },
-    "package_id": {
-      "description": "Seller's ID of package to update",
-      "type": "string"
-    },
-    "paused": {
-      "description": "Pause/resume specific package (true = paused, false = active)",
-      "type": "boolean"
-    },
-    "start_time": {
-      "description": "Updated flight start date/time for this package in ISO 8601 format. Must fall within the media buy's date range.",
-      "format": "date-time",
-      "not": {
-        "const": "asap"
-      },
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "targeting_overlay": {
-      "$ref": "../core/targeting.json",
-      "description": "Targeting overlay to apply to this package. Uses replacement semantics \u2014 the full overlay replaces the previous one. Omit to leave targeting unchanged. For keyword and negative keyword updates, prefer the incremental operations (keyword_targets_add, keyword_targets_remove, negative_keywords_add, negative_keywords_remove) which avoid replacing the full overlay. Sellers SHOULD return a validation error if targeting_overlay.keyword_targets is present in the same request as keyword_targets_add or keyword_targets_remove, and likewise for negative_keywords."
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "package_id"
   ],
-  "title": "Package Update",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/provide-performance-feedback-request.json b/schemas/cache/media-buy/provide-performance-feedback-request.json
index c68de2576..7c4a18516 100644
--- a/schemas/cache/media-buy/provide-performance-feedback-request.json
+++ b/schemas/cache/media-buy/provide-performance-feedback-request.json
@@ -1,60 +1,68 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Provide Performance Feedback Request",
   "description": "Request payload for provide_performance_feedback task",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "creative_id": {
-      "description": "Specific creative asset (if feedback is creative-specific)",
-      "minLength": 1,
-      "type": "string"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "feedback_source": {
-      "$ref": "../enums/feedback-source.json",
-      "default": "buyer_attribution",
-      "description": "Source of the performance data"
+    "media_buy_id": {
+      "type": "string",
+      "description": "Seller's media buy identifier",
+      "minLength": 1
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for this request. Prevents duplicate feedback submissions on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
     "measurement_period": {
       "$ref": "../core/datetime-range.json",
       "description": "Time period for performance measurement"
     },
-    "media_buy_id": {
-      "description": "Seller's media buy identifier",
-      "minLength": 1,
-      "type": "string"
+    "performance_index": {
+      "type": "number",
+      "description": "Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)",
+      "minimum": 0
+    },
+    "package_id": {
+      "type": "string",
+      "description": "Specific package within the media buy (if feedback is package-specific)",
+      "minLength": 1
+    },
+    "creative_id": {
+      "type": "string",
+      "description": "Specific creative asset (if feedback is creative-specific)",
+      "minLength": 1
     },
     "metric_type": {
       "$ref": "../enums/metric-type.json",
-      "default": "overall_performance",
-      "description": "The business metric being measured"
+      "description": "The business metric being measured",
+      "default": "overall_performance"
     },
-    "package_id": {
-      "description": "Specific package within the media buy (if feedback is package-specific)",
-      "minLength": 1,
-      "type": "string"
+    "feedback_source": {
+      "$ref": "../enums/feedback-source.json",
+      "description": "Source of the performance data",
+      "default": "buyer_attribution"
     },
-    "performance_index": {
-      "description": "Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)",
-      "minimum": 0,
-      "type": "number"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "media_buy_id",
     "measurement_period",
     "performance_index"
   ],
-  "title": "Provide Performance Feedback Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/provide-performance-feedback-response.json b/schemas/cache/media-buy/provide-performance-feedback-response.json
index 5e323704b..540627642 100644
--- a/schemas/cache/media-buy/provide-performance-feedback-response.json
+++ b/schemas/cache/media-buy/provide-performance-feedback-response.json
@@ -1,66 +1,55 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Provide Performance Feedback Response",
   "description": "Response payload for provide_performance_feedback task. Returns either success confirmation OR error information, never both.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "ProvidePerformanceFeedbackSuccess",
       "description": "Success response - feedback received and processed",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
+        "success": {
+          "type": "boolean",
+          "description": "Whether the performance feedback was successfully received",
+          "const": true
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
         "context": {
           "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
-        },
-        "success": {
-          "const": true,
-          "description": "Whether the performance feedback was successfully received",
-          "type": "boolean"
         }
       },
       "required": [
         "success"
       ],
-      "title": "ProvidePerformanceFeedbackSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "Error response - feedback rejected or could not be processed",
       "not": {
-        "anyOf": [
-          {
-            "required": [
-              "success"
-            ]
-          },
-          {
-            "required": [
-              "sandbox"
-            ]
-          }
+        "required": [
+          "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "ProvidePerformanceFeedbackError",
+      "description": "Error response - feedback rejected or could not be processed",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "description": "Array of errors explaining why feedback was rejected (e.g., invalid measurement period, missing campaign data)",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -69,10 +58,21 @@
       "required": [
         "errors"
       ],
-      "title": "ProvidePerformanceFeedbackError",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "success"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
     }
-  ],
-  "title": "Provide Performance Feedback Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-audiences-request.json b/schemas/cache/media-buy/sync-audiences-request.json
index 26656e574..55f4ebe73 100644
--- a/schemas/cache/media-buy/sync-audiences-request.json
+++ b/schemas/cache/media-buy/sync-audiences-request.json
@@ -1,110 +1,124 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Audiences Request",
   "description": "Request parameters for managing CRM-based audiences on an account with upsert semantics. Existing audiences matched by audience_id are updated, new ones are created. Members are specified as delta operations: add appends new members, remove drops existing ones. Recommend no more than 100,000 members per call; for larger lists, chunk and call incrementally using add/remove deltas. When delete_missing is true, buyer-managed audiences on the account not in this request are removed \u2014 do not combine with omitted audiences or all buyer-managed audiences will be deleted. When audiences is omitted, the call is discovery-only: it returns all audiences on the account without modification.",
-  "if": {
-    "properties": {
-      "delete_missing": {
-        "const": true
-      }
-    },
-    "required": [
-      "delete_missing"
-    ]
-  },
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `audience_id` gives resource-level dedup per audience, but the sync envelope emits audit events and may trigger downstream refreshes \u2014 this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `audiences` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Account to manage audiences for."
     },
     "audiences": {
+      "type": "array",
       "description": "Audiences to sync (create or update). When omitted, the call is discovery-only and returns all existing audiences on the account without modification.",
+      "minItems": 1,
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "add": {
-            "description": "Members to add to this audience. Hashed before sending \u2014 normalize emails to lowercase+trim, phones to E.164.",
-            "items": {
-              "$ref": "../core/audience-member.json"
-            },
-            "minItems": 1,
-            "type": "array"
-          },
           "audience_id": {
-            "description": "Buyer's identifier for this audience. Used to reference the audience in targeting overlays.",
-            "type": "string"
+            "type": "string",
+            "description": "Buyer's identifier for this audience. Used to reference the audience in targeting overlays."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this audience"
+          },
+          "description": {
+            "type": "string",
+            "description": "Human-readable description of this audience's composition or purpose (e.g., 'High-value customers who purchased in the last 90 days')."
           },
           "audience_type": {
-            "description": "Intended use for this audience. 'crm': target these users. 'suppression': exclude these users from delivery. 'lookalike_seed': use as a seed for the seller's lookalike modeling. Sellers may handle audiences differently based on type (e.g., suppression lists bypass minimum size requirements on some platforms).",
+            "type": "string",
             "enum": [
               "crm",
               "suppression",
               "lookalike_seed"
             ],
-            "type": "string"
+            "description": "Intended use for this audience. 'crm': target these users. 'suppression': exclude these users from delivery. 'lookalike_seed': use as a seed for the seller's lookalike modeling. Sellers may handle audiences differently based on type (e.g., suppression lists bypass minimum size requirements on some platforms)."
           },
-          "consent_basis": {
-            "$ref": "../enums/consent-basis.json",
-            "description": "GDPR lawful basis for processing this audience list. Informational \u2014 not validated by the protocol, but required by some sellers operating in regulated markets (e.g. EU). When omitted, the buyer asserts they have a lawful basis appropriate to their jurisdiction."
-          },
-          "delete": {
-            "description": "When true, delete this audience from the account entirely. All other fields on this audience object are ignored. Use this to delete a specific audience without affecting others.",
-            "type": "boolean"
-          },
-          "description": {
-            "description": "Human-readable description of this audience's composition or purpose (e.g., 'High-value customers who purchased in the last 90 days').",
-            "type": "string"
+          "tags": {
+            "type": "array",
+            "description": "Buyer-defined tags for organizing and filtering audiences (e.g., 'holiday_2026', 'high_ltv'). Tags are stored by the seller and returned in discovery-only calls.",
+            "items": {
+              "type": "string",
+              "minLength": 1
+            },
+            "uniqueItems": true
           },
-          "name": {
-            "description": "Human-readable name for this audience",
-            "type": "string"
+          "add": {
+            "type": "array",
+            "description": "Members to add to this audience. Hashed before sending \u2014 normalize emails to lowercase+trim, phones to E.164.",
+            "items": {
+              "$ref": "../core/audience-member.json"
+            },
+            "minItems": 1
           },
           "remove": {
+            "type": "array",
             "description": "Members to remove from this audience. If the same identifier appears in both add and remove in a single request, remove takes precedence.",
             "items": {
               "$ref": "../core/audience-member.json"
             },
-            "minItems": 1,
-            "type": "array"
+            "minItems": 1
           },
-          "tags": {
-            "description": "Buyer-defined tags for organizing and filtering audiences (e.g., 'holiday_2026', 'high_ltv'). Tags are stored by the seller and returned in discovery-only calls.",
-            "items": {
-              "minLength": 1,
-              "type": "string"
-            },
-            "type": "array",
-            "uniqueItems": true
+          "delete": {
+            "type": "boolean",
+            "description": "When true, delete this audience from the account entirely. All other fields on this audience object are ignored. Use this to delete a specific audience without affecting others."
+          },
+          "consent_basis": {
+            "$ref": "../enums/consent-basis.json",
+            "description": "GDPR lawful basis for processing this audience list. Informational \u2014 not validated by the protocol, but required by some sellers operating in regulated markets (e.g. EU). When omitted, the buyer asserts they have a lawful basis appropriate to their jurisdiction."
           }
         },
         "required": [
           "audience_id"
         ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "context": {
-      "$ref": "../core/context.json"
+        "additionalProperties": true
+      }
     },
     "delete_missing": {
+      "type": "boolean",
       "default": false,
-      "description": "When true, buyer-managed audiences on the account not included in this sync will be removed. Does not affect seller-managed audiences. Do not combine with an omitted audiences array or all buyer-managed audiences will be deleted.",
-      "type": "boolean"
+      "description": "When true, buyer-managed audiences on the account not included in this sync will be removed. Does not affect seller-managed audiences. Do not combine with an omitted audiences array or all buyer-managed audiences will be deleted."
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "account"
   ],
+  "if": {
+    "properties": {
+      "delete_missing": {
+        "const": true
+      }
+    },
+    "required": [
+      "delete_missing"
+    ]
+  },
   "then": {
     "required": [
       "audiences"
     ]
   },
-  "title": "Sync Audiences Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-audiences-response.json b/schemas/cache/media-buy/sync-audiences-response.json
index daf0ff67e..746a67deb 100644
--- a/schemas/cache/media-buy/sync-audiences-response.json
+++ b/schemas/cache/media-buy/sync-audiences-response.json
@@ -1,23 +1,34 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Audiences Response",
   "description": "Response from audience sync operation. Returns either per-audience results OR operation-level errors.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "SyncAudiencesSuccess",
       "description": "Success response - sync operation processed audiences",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
         "audiences": {
+          "type": "array",
           "description": "Results for each audience on the account",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
+              "audience_id": {
+                "type": "string",
+                "description": "Audience ID from the request (buyer's identifier)"
+              },
+              "name": {
+                "type": "string",
+                "description": "Name of the audience"
+              },
+              "seller_id": {
+                "type": "string",
+                "description": "Seller-assigned identifier for this audience in their ad platform"
+              },
               "action": {
-                "description": "Action taken for this audience. 'status' is present when action is created, updated, or unchanged. 'status' is absent when action is deleted or failed.",
+                "type": "string",
                 "enum": [
                   "created",
                   "updated",
@@ -25,54 +36,63 @@
                   "deleted",
                   "failed"
                 ],
-                "type": "string"
+                "description": "Action taken for this audience. 'status' is present when action is created, updated, or unchanged. 'status' is absent when action is deleted or failed."
               },
-              "audience_id": {
-                "description": "Audience ID from the request (buyer's identifier)",
-                "type": "string"
+              "status": {
+                "type": "string",
+                "enum": [
+                  "processing",
+                  "ready",
+                  "too_small"
+                ],
+                "description": "Matching status. Present when action is created, updated, or unchanged; absent when action is deleted or failed. 'processing': platform is still matching members against its user base. 'ready': audience is available for targeting, matched_count is populated. 'too_small': matched audience is below the platform's minimum size \u2014 add more members and re-sync."
+              },
+              "uploaded_count": {
+                "type": "integer",
+                "description": "Number of members submitted in this sync operation (delta, not cumulative). In discovery-only calls (no audiences array), this is 0.",
+                "minimum": 0
+              },
+              "total_uploaded_count": {
+                "type": "integer",
+                "description": "Cumulative number of members uploaded across all syncs for this audience. Compare with matched_count to calculate match rate (matched_count / total_uploaded_count). Populated when the seller tracks cumulative upload counts.",
+                "minimum": 0
+              },
+              "matched_count": {
+                "type": "integer",
+                "description": "Total members matched to platform users across all syncs (cumulative, not just this call). Populated when status is 'ready'.",
+                "minimum": 0
               },
               "effective_match_rate": {
+                "type": "number",
                 "description": "Deduplicated match rate across all identifier types (matched_count / total_uploaded_count after deduplication). A single number for reach estimation. Populated when status is 'ready'.",
-                "maximum": 1,
                 "minimum": 0,
-                "type": "number"
-              },
-              "errors": {
-                "description": "Errors for this audience (only present when action='failed')",
-                "items": {
-                  "$ref": "../core/error.json"
-                },
-                "type": "array"
-              },
-              "last_synced_at": {
-                "description": "ISO 8601 timestamp of when the most recent sync operation was accepted by the platform. Useful for agents reasoning about audience freshness. Omitted if the seller does not track this.",
-                "format": "date-time",
-                "type": "string"
+                "maximum": 1
               },
               "match_breakdown": {
+                "type": "array",
                 "description": "Per-identifier-type match results. Shows which ID types are resolving and at what rate. Helps buyers decide which identifiers to prioritize. Populated when the seller can report per-type matching. Omitted when the seller only supports aggregate match counts.",
                 "items": {
-                  "additionalProperties": true,
+                  "type": "object",
                   "properties": {
                     "id_type": {
                       "$ref": "../enums/match-id-type.json",
                       "description": "Identifier type. Combines hashed PII types (hashed_email, hashed_phone) with universal ID types (rampid, uid2, maid, etc.)."
                     },
-                    "match_rate": {
-                      "description": "Match rate for this identifier type (matched / submitted). Server-authoritative \u2014 consumers should prefer this value over computing their own.",
-                      "maximum": 1,
-                      "minimum": 0,
-                      "type": "number"
+                    "submitted": {
+                      "type": "integer",
+                      "description": "Cumulative number of members submitted with this identifier type across all syncs (matches total_uploaded_count semantics, not uploaded_count). Compare with matched to calculate per-type match rate.",
+                      "minimum": 0
                     },
                     "matched": {
+                      "type": "integer",
                       "description": "Cumulative number of members matched via this identifier type across all syncs.",
-                      "minimum": 0,
-                      "type": "integer"
+                      "minimum": 0
                     },
-                    "submitted": {
-                      "description": "Cumulative number of members submitted with this identifier type across all syncs (matches total_uploaded_count semantics, not uploaded_count). Compare with matched to calculate per-type match rate.",
+                    "match_rate": {
+                      "type": "number",
+                      "description": "Match rate for this identifier type (matched / submitted). Server-authoritative \u2014 consumers should prefer this value over computing their own.",
                       "minimum": 0,
-                      "type": "integer"
+                      "maximum": 1
                     }
                   },
                   "required": [
@@ -81,102 +101,71 @@
                     "matched",
                     "match_rate"
                   ],
-                  "type": "object"
+                  "additionalProperties": true
                 },
-                "minItems": 1,
-                "type": "array"
+                "minItems": 1
               },
-              "matched_count": {
-                "description": "Total members matched to platform users across all syncs (cumulative, not just this call). Populated when status is 'ready'.",
-                "minimum": 0,
-                "type": "integer"
+              "last_synced_at": {
+                "type": "string",
+                "format": "date-time",
+                "description": "ISO 8601 timestamp of when the most recent sync operation was accepted by the platform. Useful for agents reasoning about audience freshness. Omitted if the seller does not track this."
               },
               "minimum_size": {
+                "type": "integer",
                 "description": "Minimum matched audience size required for targeting on this platform. Populated when status is 'too_small'. Helps agents know how many more members are needed.",
-                "minimum": 1,
-                "type": "integer"
-              },
-              "name": {
-                "description": "Name of the audience",
-                "type": "string"
-              },
-              "seller_id": {
-                "description": "Seller-assigned identifier for this audience in their ad platform",
-                "type": "string"
-              },
-              "status": {
-                "description": "Matching status. Present when action is created, updated, or unchanged; absent when action is deleted or failed. 'processing': platform is still matching members against its user base. 'ready': audience is available for targeting, matched_count is populated. 'too_small': matched audience is below the platform's minimum size \u2014 add more members and re-sync.",
-                "enum": [
-                  "processing",
-                  "ready",
-                  "too_small"
-                ],
-                "type": "string"
-              },
-              "total_uploaded_count": {
-                "description": "Cumulative number of members uploaded across all syncs for this audience. Compare with matched_count to calculate match rate (matched_count / total_uploaded_count). Populated when the seller tracks cumulative upload counts.",
-                "minimum": 0,
-                "type": "integer"
+                "minimum": 1
               },
-              "uploaded_count": {
-                "description": "Number of members submitted in this sync operation (delta, not cumulative). In discovery-only calls (no audiences array), this is 0.",
-                "minimum": 0,
-                "type": "integer"
+              "errors": {
+                "type": "array",
+                "description": "Errors for this audience (only present when action='failed')",
+                "items": {
+                  "$ref": "../core/error.json"
+                }
               }
             },
             "required": [
               "audience_id",
               "action"
             ],
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": true
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
         },
         "context": {
           "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
         }
       },
       "required": [
         "audiences"
       ],
-      "title": "SyncAudiencesSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "Error response - operation failed completely",
       "not": {
-        "anyOf": [
-          {
-            "required": [
-              "audiences"
-            ]
-          },
-          {
-            "required": [
-              "sandbox"
-            ]
-          }
+        "required": [
+          "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "SyncAudiencesError",
+      "description": "Error response - operation failed completely",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "description": "Operation-level errors that prevented processing",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -185,10 +174,21 @@
       "required": [
         "errors"
       ],
-      "title": "SyncAudiencesError",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "audiences"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
     }
-  ],
-  "title": "Sync Audiences Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-catalogs-request.json b/schemas/cache/media-buy/sync-catalogs-request.json
index cdf5dd58c..6769e63ec 100644
--- a/schemas/cache/media-buy/sync-catalogs-request.json
+++ b/schemas/cache/media-buy/sync-catalogs-request.json
@@ -1,45 +1,137 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Catalogs Request",
   "description": "Request parameters for syncing catalog feeds with upsert semantics. Supports bulk operations across multiple catalog types (products, inventory, stores, promotions, offerings). Existing catalogs matched by catalog_id are updated, new ones are created. When catalogs is omitted, the call is discovery-only: returns all catalogs on the account without modification.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `catalog_id` gives resource-level dedup per catalog, but the sync envelope emits audit events and triggers platform review for large feeds \u2014 this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `catalogs` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account that owns these catalogs."
+    },
+    "catalogs": {
+      "type": "array",
+      "description": "Array of catalog feeds to sync (create or update). When omitted, the call is discovery-only and returns all existing catalogs on the account without modification.",
+      "items": {
+        "$ref": "../core/catalog.json"
+      },
+      "minItems": 1,
+      "maxItems": 50
+    },
+    "catalog_ids": {
+      "type": "array",
+      "description": "Optional filter to limit sync scope to specific catalog IDs. When provided, only these catalogs will be created/updated. Other catalogs on the account are unaffected.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1,
+      "maxItems": 50
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, buyer-managed catalogs on the account not included in this sync will be removed. Does not affect seller-managed catalogs. Do not combine with an omitted catalogs array or all buyer-managed catalogs will be deleted."
+    },
+    "dry_run": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, preview changes without applying them. Returns what would be created/updated/deleted."
+    },
+    "validation_mode": {
+      "$ref": "../enums/validation-mode.json",
+      "default": "strict",
+      "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid catalogs and reports errors."
+    },
+    "push_notification_config": {
+      "$ref": "../core/push-notification-config.json",
+      "description": "Optional webhook configuration for async sync notifications. Publisher will send webhook when sync completes if operation takes longer than immediate response time (common for large feeds requiring platform review)."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "idempotency_key",
+    "account"
+  ],
+  "if": {
+    "properties": {
+      "delete_missing": {
+        "const": true
+      }
+    },
+    "required": [
+      "delete_missing"
+    ]
+  },
+  "then": {
+    "required": [
+      "catalogs"
+    ],
+    "errorMessage": "catalogs is required when delete_missing is true \u2014 omitting it would delete all buyer-managed catalogs on the account"
+  },
+  "additionalProperties": true,
   "examples": [
     {
+      "description": "Sync product and inventory feeds for a retail media campaign",
       "data": {
+        "idempotency_key": "a1d5c8e9-7890-489c-def0-12345678901a",
         "account": {
           "account_id": "acct_acmecorp"
         },
         "catalogs": [
           {
             "catalog_id": "product-feed",
-            "feed_format": "google_merchant_center",
             "name": "Acme Product Catalog",
             "type": "product",
-            "update_frequency": "daily",
-            "url": "https://feeds.acmecorp.com/products.xml"
+            "url": "https://feeds.acmecorp.com/products.xml",
+            "feed_format": "google_merchant_center",
+            "update_frequency": "daily"
           },
           {
             "catalog_id": "inventory-feed",
-            "feed_format": "custom",
             "name": "Store Inventory",
             "type": "inventory",
-            "update_frequency": "hourly",
-            "url": "https://feeds.acmecorp.com/inventory.json"
+            "url": "https://feeds.acmecorp.com/inventory.json",
+            "feed_format": "custom",
+            "update_frequency": "hourly"
           }
         ]
-      },
-      "description": "Sync product and inventory feeds for a retail media campaign"
+      }
     },
     {
+      "description": "Sync inline offerings for a recruitment campaign",
       "data": {
+        "idempotency_key": "b2e6d9f0-8901-489d-ef01-23456789012b",
         "account": {
           "account_id": "acct_restaurants"
         },
         "catalogs": [
           {
             "catalog_id": "chef-vacancies",
+            "name": "Chef Position Vacancies",
+            "type": "offering",
             "items": [
               {
+                "offering_id": "chef-amsterdam-42",
+                "name": "Head Chef - Amsterdam",
                 "description": "Lead our kitchen team in central Amsterdam",
+                "landing_url": "https://jobs.acme-restaurants.com/chef-amsterdam-42",
                 "geo_targets": {
                   "countries": [
                     "NL"
@@ -47,96 +139,21 @@
                   "regions": [
                     "NL-NH"
                   ]
-                },
-                "landing_url": "https://jobs.acme-restaurants.com/chef-amsterdam-42",
-                "name": "Head Chef - Amsterdam",
-                "offering_id": "chef-amsterdam-42"
+                }
               }
-            ],
-            "name": "Chef Position Vacancies",
-            "type": "offering"
+            ]
           }
         ]
-      },
-      "description": "Sync inline offerings for a recruitment campaign"
+      }
     },
     {
+      "description": "Discovery-only: list all catalogs on the account",
       "data": {
+        "idempotency_key": "c3f7e0a1-9012-489e-f012-34567890123c",
         "account": {
           "account_id": "acct_acmecorp"
         }
-      },
-      "description": "Discovery-only: list all catalogs on the account"
-    }
-  ],
-  "if": {
-    "properties": {
-      "delete_missing": {
-        "const": true
       }
-    },
-    "required": [
-      "delete_missing"
-    ]
-  },
-  "properties": {
-    "account": {
-      "$ref": "../core/account-ref.json",
-      "description": "Account that owns these catalogs."
-    },
-    "catalog_ids": {
-      "description": "Optional filter to limit sync scope to specific catalog IDs. When provided, only these catalogs will be created/updated. Other catalogs on the account are unaffected.",
-      "items": {
-        "type": "string"
-      },
-      "maxItems": 50,
-      "minItems": 1,
-      "type": "array"
-    },
-    "catalogs": {
-      "description": "Array of catalog feeds to sync (create or update). When omitted, the call is discovery-only and returns all existing catalogs on the account without modification.",
-      "items": {
-        "$ref": "../core/catalog.json"
-      },
-      "maxItems": 50,
-      "minItems": 1,
-      "type": "array"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "delete_missing": {
-      "default": false,
-      "description": "When true, buyer-managed catalogs on the account not included in this sync will be removed. Does not affect seller-managed catalogs. Do not combine with an omitted catalogs array or all buyer-managed catalogs will be deleted.",
-      "type": "boolean"
-    },
-    "dry_run": {
-      "default": false,
-      "description": "When true, preview changes without applying them. Returns what would be created/updated/deleted.",
-      "type": "boolean"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "push_notification_config": {
-      "$ref": "../core/push-notification-config.json",
-      "description": "Optional webhook configuration for async sync notifications. Publisher will send webhook when sync completes if operation takes longer than immediate response time (common for large feeds requiring platform review)."
-    },
-    "validation_mode": {
-      "$ref": "../enums/validation-mode.json",
-      "default": "strict",
-      "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid catalogs and reports errors."
     }
-  },
-  "required": [
-    "account"
-  ],
-  "then": {
-    "errorMessage": "catalogs is required when delete_missing is true \u2014 omitting it would delete all buyer-managed catalogs on the account",
-    "required": [
-      "catalogs"
-    ]
-  },
-  "title": "Sync Catalogs Request",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-catalogs-response.json b/schemas/cache/media-buy/sync-catalogs-response.json
index 235c50f03..dd790e814 100644
--- a/schemas/cache/media-buy/sync-catalogs-response.json
+++ b/schemas/cache/media-buy/sync-catalogs-response.json
@@ -1,146 +1,169 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Catalogs Response",
   "description": "Response from catalog sync operation. Returns either per-catalog results (best-effort processing) OR operation-level errors (complete failure). Platforms may approve, reject, or flag individual items within each catalog (similar to Google Merchant Center product review).",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "SyncCatalogsSuccess",
       "description": "Success response - sync operation processed catalogs (may include per-catalog failures)",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
+        "dry_run": {
+          "type": "boolean",
+          "description": "Whether this was a dry run (no actual changes made)"
+        },
         "catalogs": {
+          "type": "array",
           "description": "Results for each catalog processed. Items with action='failed' indicate per-catalog validation/processing failures, not operation-level failures.",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
+              "catalog_id": {
+                "type": "string",
+                "description": "Catalog ID from the request"
+              },
               "action": {
                 "$ref": "../enums/catalog-action.json",
                 "description": "Action taken for this catalog"
               },
-              "catalog_id": {
-                "description": "Catalog ID from the request",
-                "type": "string"
+              "platform_id": {
+                "type": "string",
+                "description": "Platform-specific ID assigned to the catalog"
               },
-              "changes": {
-                "description": "Field names that were modified (only present when action='updated')",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
+              "item_count": {
+                "type": "integer",
+                "minimum": 0,
+                "description": "Total number of items in the catalog after sync"
               },
-              "errors": {
-                "description": "Validation or processing errors (only present when action='failed')",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
+              "items_approved": {
+                "type": "integer",
+                "minimum": 0,
+                "description": "Number of items approved by the platform. Populated when the platform performs item-level review."
               },
-              "item_count": {
-                "description": "Total number of items in the catalog after sync",
+              "items_pending": {
+                "type": "integer",
                 "minimum": 0,
-                "type": "integer"
+                "description": "Number of items pending platform review. Common for product catalogs where items must pass content policy checks."
+              },
+              "items_rejected": {
+                "type": "integer",
+                "minimum": 0,
+                "description": "Number of items rejected by the platform. Check item_issues for rejection reasons."
               },
               "item_issues": {
+                "type": "array",
                 "description": "Per-item issues reported by the platform (rejections, warnings). Only present when the platform performs item-level review.",
                 "items": {
-                  "additionalProperties": true,
+                  "type": "object",
                   "properties": {
                     "item_id": {
-                      "description": "ID of the catalog item with an issue",
-                      "type": "string"
+                      "type": "string",
+                      "description": "ID of the catalog item with an issue"
+                    },
+                    "status": {
+                      "$ref": "../enums/catalog-item-status.json",
+                      "description": "Item review status"
                     },
                     "reasons": {
+                      "type": "array",
                       "description": "Reasons for rejection or warning",
                       "items": {
                         "type": "string"
-                      },
-                      "type": "array"
-                    },
-                    "status": {
-                      "$ref": "../enums/catalog-item-status.json",
-                      "description": "Item review status"
+                      }
                     }
                   },
                   "required": [
                     "item_id",
                     "status"
                   ],
-                  "type": "object"
-                },
-                "type": "array"
-              },
-              "items_approved": {
-                "description": "Number of items approved by the platform. Populated when the platform performs item-level review.",
-                "minimum": 0,
-                "type": "integer"
-              },
-              "items_pending": {
-                "description": "Number of items pending platform review. Common for product catalogs where items must pass content policy checks.",
-                "minimum": 0,
-                "type": "integer"
-              },
-              "items_rejected": {
-                "description": "Number of items rejected by the platform. Check item_issues for rejection reasons.",
-                "minimum": 0,
-                "type": "integer"
+                  "additionalProperties": true
+                }
               },
               "last_synced_at": {
-                "description": "ISO 8601 timestamp of when the most recent sync was accepted by the platform",
+                "type": "string",
                 "format": "date-time",
-                "type": "string"
+                "description": "ISO 8601 timestamp of when the most recent sync was accepted by the platform"
               },
               "next_fetch_at": {
-                "description": "ISO 8601 timestamp of when the platform will next fetch the feed URL. Only present for URL-based catalogs with update_frequency.",
+                "type": "string",
                 "format": "date-time",
-                "type": "string"
+                "description": "ISO 8601 timestamp of when the platform will next fetch the feed URL. Only present for URL-based catalogs with update_frequency."
               },
-              "platform_id": {
-                "description": "Platform-specific ID assigned to the catalog",
-                "type": "string"
+              "changes": {
+                "type": "array",
+                "description": "Field names that were modified (only present when action='updated')",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "errors": {
+                "type": "array",
+                "description": "Validation or processing errors (only present when action='failed')",
+                "items": {
+                  "$ref": "../core/error.json"
+                }
               },
               "warnings": {
+                "type": "array",
                 "description": "Non-fatal warnings about this catalog",
                 "items": {
                   "type": "string"
-                },
-                "type": "array"
+                }
               }
             },
             "required": [
               "catalog_id",
               "action"
             ],
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": true
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
         },
         "context": {
           "$ref": "../core/context.json"
         },
-        "dry_run": {
-          "description": "Whether this was a dry run (no actual changes made)",
-          "type": "boolean"
-        },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
         }
       },
       "required": [
         "catalogs"
       ],
-      "title": "SyncCatalogsSuccess",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
+      "title": "SyncCatalogsError",
       "description": "Error response - operation failed completely, no catalogs were processed",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Operation-level errors that prevented processing any catalogs (e.g., authentication failure, service unavailable, invalid request format)",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
       "not": {
         "anyOf": [
           {
@@ -159,30 +182,7 @@
             ]
           }
         ]
-      },
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "errors": {
-          "description": "Operation-level errors that prevented processing any catalogs (e.g., authentication failure, service unavailable, invalid request format)",
-          "items": {
-            "$ref": "../core/error.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        }
-      },
-      "required": [
-        "errors"
-      ],
-      "title": "SyncCatalogsError",
-      "type": "object"
+      }
     }
-  ],
-  "title": "Sync Catalogs Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-event-sources-request.json b/schemas/cache/media-buy/sync-event-sources-request.json
index 938a010bb..6fef1c6ac 100644
--- a/schemas/cache/media-buy/sync-event-sources-request.json
+++ b/schemas/cache/media-buy/sync-event-sources-request.json
@@ -1,65 +1,79 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Event Sources Request",
   "description": "Request parameters for configuring event sources on an account with upsert semantics. Existing event sources matched by event_source_id are updated, new ones are created. When delete_missing is true, buyer-managed event sources on the account not in this request are removed. When event_sources is omitted, the call is discovery-only: it returns all event sources on the account without modification. The response always includes both synced and seller-managed event sources for full visibility.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. `event_source_id` gives resource-level dedup per source, but the sync envelope emits audit events and can trigger downstream pixel provisioning \u2014 this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `event_sources` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Account to configure event sources for."
     },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "delete_missing": {
-      "default": false,
-      "description": "When true, event sources not included in this sync will be removed",
-      "type": "boolean"
-    },
     "event_sources": {
+      "type": "array",
       "description": "Event sources to sync (create or update). When omitted, the call is discovery-only and returns all existing event sources on the account without modification.",
+      "minItems": 1,
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "allowed_domains": {
-            "description": "Domains authorized to send events for this event source",
-            "items": {
-              "type": "string"
-            },
-            "minItems": 1,
-            "type": "array"
-          },
           "event_source_id": {
-            "description": "Unique identifier for this event source",
-            "type": "string"
+            "type": "string",
+            "description": "Unique identifier for this event source"
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable name for this event source"
           },
           "event_types": {
+            "type": "array",
             "description": "Event types this source handles (e.g. purchase, lead). If omitted, accepts all event types.",
             "items": {
               "$ref": "../enums/event-type.json"
             },
-            "minItems": 1,
-            "type": "array"
+            "minItems": 1
           },
-          "name": {
-            "description": "Human-readable name for this event source",
-            "type": "string"
+          "allowed_domains": {
+            "type": "array",
+            "description": "Domains authorized to send events for this event source",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1
           }
         },
         "required": [
           "event_source_id"
         ],
-        "type": "object"
-      },
-      "minItems": 1,
-      "type": "array"
+        "additionalProperties": true
+      }
+    },
+    "delete_missing": {
+      "type": "boolean",
+      "default": false,
+      "description": "When true, event sources not included in this sync will be removed"
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "account"
   ],
-  "title": "Sync Event Sources Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-event-sources-response.json b/schemas/cache/media-buy/sync-event-sources-response.json
index e093c1f48..9776c4676 100644
--- a/schemas/cache/media-buy/sync-event-sources-response.json
+++ b/schemas/cache/media-buy/sync-event-sources-response.json
@@ -1,153 +1,142 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Sync Event Sources Response",
   "description": "Response from event source sync operation. Returns either per-source results OR operation-level errors.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "SyncEventSourcesSuccess",
       "description": "Success response - sync operation processed event sources",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "event_sources": {
+          "type": "array",
           "description": "Results for each event source, including both synced and seller-managed sources on the account",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
-              "action": {
-                "description": "Action taken for this event source",
-                "enum": [
-                  "created",
-                  "updated",
-                  "unchanged",
-                  "deleted",
-                  "failed"
-                ],
-                "type": "string"
-              },
-              "action_source": {
-                "$ref": "../enums/action-source.json",
-                "description": "Type of event source (website pixel, app SDK, in-store, etc.)"
+              "event_source_id": {
+                "type": "string",
+                "description": "Event source ID from the request"
               },
-              "errors": {
-                "description": "Errors for this event source (only present when action='failed')",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
+              "name": {
+                "type": "string",
+                "description": "Name of the event source"
               },
-              "event_source_id": {
-                "description": "Event source ID from the request",
-                "type": "string"
+              "seller_id": {
+                "type": "string",
+                "description": "Seller-assigned identifier for this event source (the ID in the seller's ad platform)"
               },
               "event_types": {
+                "type": "array",
                 "description": "Event types this source handles",
                 "items": {
                   "$ref": "../enums/event-type.json"
-                },
-                "type": "array"
+                }
               },
-              "health": {
-                "$ref": "../core/event-source-health.json",
-                "description": "Health assessment for this event source. Reflects event volume, data quality, and parameter completeness. Sellers that support health scoring include this on every source (buyer-managed and seller-managed). Absent when the seller does not evaluate event source health."
+              "action_source": {
+                "$ref": "../enums/action-source.json",
+                "description": "Type of event source (website pixel, app SDK, in-store, etc.)"
               },
               "managed_by": {
-                "description": "Who manages this event source. 'buyer' = configured via this sync. 'seller' = always-on, managed by the seller (e.g. Amazon sales attribution for Amazon advertisers).",
+                "type": "string",
                 "enum": [
                   "buyer",
                   "seller"
                 ],
-                "type": "string"
-              },
-              "name": {
-                "description": "Name of the event source",
-                "type": "string"
-              },
-              "seller_id": {
-                "description": "Seller-assigned identifier for this event source (the ID in the seller's ad platform)",
-                "type": "string"
+                "description": "Who manages this event source. 'buyer' = configured via this sync. 'seller' = always-on, managed by the seller (e.g. Amazon sales attribution for Amazon advertisers)."
               },
               "setup": {
-                "additionalProperties": true,
+                "type": "object",
                 "description": "Implementation details for activating this event source (e.g. JavaScript tag, pixel URL)",
                 "properties": {
-                  "instructions": {
-                    "description": "Human/agent-readable setup instructions",
-                    "type": "string"
-                  },
                   "snippet": {
-                    "description": "Code snippet to place on the site (JavaScript, HTML pixel, etc.)",
-                    "type": "string"
+                    "type": "string",
+                    "description": "Code snippet to place on the site (JavaScript, HTML pixel, etc.)"
                   },
                   "snippet_type": {
-                    "description": "Type of implementation. 'server_only' means no client-side tag is needed.",
+                    "type": "string",
                     "enum": [
                       "javascript",
                       "html",
                       "pixel_url",
                       "server_only"
                     ],
-                    "type": "string"
+                    "description": "Type of implementation. 'server_only' means no client-side tag is needed."
+                  },
+                  "instructions": {
+                    "type": "string",
+                    "description": "Human/agent-readable setup instructions"
                   }
                 },
-                "type": "object"
+                "additionalProperties": true
+              },
+              "action": {
+                "type": "string",
+                "enum": [
+                  "created",
+                  "updated",
+                  "unchanged",
+                  "deleted",
+                  "failed"
+                ],
+                "description": "Action taken for this event source"
+              },
+              "health": {
+                "$ref": "../core/event-source-health.json",
+                "description": "Health assessment for this event source. Reflects event volume, data quality, and parameter completeness. Sellers that support health scoring include this on every source (buyer-managed and seller-managed). Absent when the seller does not evaluate event source health."
+              },
+              "errors": {
+                "type": "array",
+                "description": "Errors for this event source (only present when action='failed')",
+                "items": {
+                  "$ref": "../core/error.json"
+                }
               }
             },
             "required": [
               "event_source_id",
               "action"
             ],
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": true
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
         }
       },
       "required": [
         "event_sources"
       ],
-      "title": "SyncEventSourcesSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "Error response - operation failed completely",
       "not": {
-        "anyOf": [
-          {
-            "required": [
-              "event_sources"
-            ]
-          },
-          {
-            "required": [
-              "sandbox"
-            ]
-          }
+        "required": [
+          "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "SyncEventSourcesError",
+      "description": "Error response - operation failed completely",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "description": "Operation-level errors that prevented processing",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -156,10 +145,21 @@
       "required": [
         "errors"
       ],
-      "title": "SyncEventSourcesError",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "event_sources"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
     }
-  ],
-  "title": "Sync Event Sources Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/update-media-buy-request.json b/schemas/cache/media-buy/update-media-buy-request.json
index 45fcba57b..9da2205e0 100644
--- a/schemas/cache/media-buy/update-media-buy-request.json
+++ b/schemas/cache/media-buy/update-media-buy-request.json
@@ -1,83 +1,96 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Update Media Buy Request",
   "description": "Request parameters for updating campaign and package settings",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account that owns this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts. Required for governance checks and account resolution."
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "Seller's ID of the media buy to update"
+    },
+    "revision": {
+      "type": "integer",
+      "description": "Expected current revision for optimistic concurrency. When provided, sellers MUST reject the update with CONFLICT if the media buy's current revision does not match. Obtain from get_media_buys or the most recent update response.",
+      "minimum": 1
+    },
+    "paused": {
+      "type": "boolean",
+      "description": "Pause/resume the entire media buy (true = paused, false = active)"
+    },
     "canceled": {
-      "const": true,
+      "type": "boolean",
       "description": "Cancel the entire media buy. Cancellation is irreversible \u2014 canceled media buys cannot be reactivated. Sellers MAY reject with NOT_CANCELLABLE if the media buy cannot be canceled in its current state.",
-      "type": "boolean"
+      "const": true
     },
     "cancellation_reason": {
+      "type": "string",
       "description": "Reason for cancellation. Sellers SHOULD store this and return it in subsequent get_media_buys responses.",
-      "maxLength": 500,
-      "type": "string"
+      "maxLength": 500
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "start_time": {
+      "$ref": "../core/start-timing.json"
     },
     "end_time": {
-      "description": "New end date/time in ISO 8601 format",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      "description": "New end date/time in ISO 8601 format"
     },
-    "idempotency_key": {
-      "description": "Client-generated idempotency key for safe retries. If an update fails without a response, resending with the same idempotency_key guarantees the update is applied at most once. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
-      "minLength": 16,
-      "type": "string"
+    "packages": {
+      "type": "array",
+      "description": "Package-specific updates for existing packages",
+      "items": {
+        "$ref": "package-update.json"
+      },
+      "minItems": 1
     },
     "invoice_recipient": {
       "$ref": "../core/business-entity.json",
       "description": "Update who receives the invoice for this buy. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
     },
-    "media_buy_id": {
-      "description": "Seller's ID of the media buy to update",
-      "type": "string"
-    },
     "new_packages": {
+      "type": "array",
       "description": "New packages to add to this media buy. Uses the same schema as create_media_buy packages. Sellers that support mid-flight package additions advertise add_packages in valid_actions. Sellers that do not support this MUST reject with UNSUPPORTED_FEATURE.",
       "items": {
         "$ref": "package-request.json"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "packages": {
-      "description": "Package-specific updates for existing packages",
-      "items": {
-        "$ref": "package-update.json"
-      },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "paused": {
-      "description": "Pause/resume the entire media buy (true = paused, false = active)",
-      "type": "boolean"
+    "reporting_webhook": {
+      "$ref": "../core/reporting-webhook.json",
+      "description": "Optional webhook configuration for automated reporting delivery. Updates the reporting configuration for this media buy."
     },
     "push_notification_config": {
       "$ref": "../core/push-notification-config.json",
       "description": "Optional webhook configuration for async update notifications. Publisher will send webhook when update completes if operation takes longer than immediate response time. This is separate from reporting_webhook which configures ongoing campaign reporting."
     },
-    "reporting_webhook": {
-      "$ref": "../core/reporting-webhook.json",
-      "description": "Optional webhook configuration for automated reporting delivery. Updates the reporting configuration for this media buy."
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated idempotency key for safe retries. If an update fails without a response, resending with the same idempotency_key guarantees the update is applied at most once. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
-    "revision": {
-      "description": "Expected current revision for optimistic concurrency. When provided, sellers MUST reject the update with CONFLICT if the media buy's current revision does not match. Obtain from get_media_buys or the most recent update response.",
-      "minimum": 1,
-      "type": "integer"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "start_time": {
-      "$ref": "../core/start-timing.json"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
+    "account",
     "media_buy_id"
   ],
-  "title": "Update Media Buy Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/update-media-buy-response.json b/schemas/cache/media-buy/update-media-buy-response.json
index 922374216..59b72e675 100644
--- a/schemas/cache/media-buy/update-media-buy-response.json
+++ b/schemas/cache/media-buy/update-media-buy-response.json
@@ -1,61 +1,51 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Media Buy Response",
   "description": "Response payload for update_media_buy task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - updates are either fully applied or not applied at all.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "UpdateMediaBuySuccess",
       "description": "Success response - media buy updated successfully",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
-        "affected_packages": {
-          "description": "Array of packages that were modified with complete state information",
-          "items": {
-            "$ref": "../core/package.json"
-          },
-          "type": "array"
+        "media_buy_id": {
+          "type": "string",
+          "description": "Seller's identifier for the media buy"
         },
-        "context": {
-          "$ref": "../core/context.json"
+        "status": {
+          "$ref": "../enums/media-buy-status.json",
+          "description": "Media buy status after the update. Present when the update changes the media buy's status (e.g., cancellation transitions to 'canceled', pause transitions to 'paused')."
         },
-        "ext": {
-          "$ref": "../core/ext.json"
+        "revision": {
+          "type": "integer",
+          "description": "Revision number after this update. Use this value in subsequent update_media_buy requests for optimistic concurrency.",
+          "minimum": 1
         },
         "implementation_date": {
-          "description": "ISO 8601 timestamp when changes take effect (null if pending approval)",
-          "format": "date-time",
           "type": [
             "string",
             "null"
-          ]
+          ],
+          "format": "date-time",
+          "description": "ISO 8601 timestamp when changes take effect (null if pending approval)"
         },
         "invoice_recipient": {
           "$ref": "../core/business-entity.json",
           "description": "Updated invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only)."
         },
-        "media_buy_id": {
-          "description": "Seller's identifier for the media buy",
-          "type": "string"
-        },
-        "revision": {
-          "description": "Revision number after this update. Use this value in subsequent update_media_buy requests for optimistic concurrency.",
-          "minimum": 1,
-          "type": "integer"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
-        },
-        "status": {
-          "$ref": "../enums/media-buy-status.json",
-          "description": "Media buy status after the update. Present when the update changes the media buy's status (e.g., cancellation transitions to 'canceled', pause transitions to 'paused')."
+        "affected_packages": {
+          "type": "array",
+          "description": "Array of packages that were modified with complete state information",
+          "items": {
+            "$ref": "../core/package.json"
+          }
         },
         "valid_actions": {
+          "type": "array",
           "description": "Actions the buyer can perform after this update. Saves a round-trip to get_media_buys.",
           "items": {
+            "type": "string",
             "enum": [
               "pause",
               "resume",
@@ -65,21 +55,54 @@
               "update_packages",
               "add_packages",
               "sync_creatives"
-            ],
-            "type": "string"
-          },
-          "type": "array"
+            ]
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
         "media_buy_id"
       ],
-      "title": "UpdateMediaBuySuccess",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "required": [
+          "errors"
+        ]
+      }
     },
     {
-      "additionalProperties": true,
+      "title": "UpdateMediaBuyError",
       "description": "Error response - operation failed, no changes applied",
+      "type": "object",
+      "properties": {
+        "errors": {
+          "type": "array",
+          "description": "Array of errors explaining why the operation failed",
+          "items": {
+            "$ref": "../core/error.json"
+          },
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
+        },
+        "ext": {
+          "$ref": "../core/ext.json"
+        }
+      },
+      "required": [
+        "errors"
+      ],
+      "additionalProperties": true,
       "not": {
         "anyOf": [
           {
@@ -98,30 +121,7 @@
             ]
           }
         ]
-      },
-      "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
-        "errors": {
-          "description": "Array of errors explaining why the operation failed",
-          "items": {
-            "$ref": "../core/error.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "ext": {
-          "$ref": "../core/ext.json"
-        }
-      },
-      "required": [
-        "errors"
-      ],
-      "title": "UpdateMediaBuyError",
-      "type": "object"
+      }
     }
-  ],
-  "title": "Update Media Buy Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/cpa-option.json b/schemas/cache/pricing-options/cpa-option.json
index b296465f4..7fd7e57f0 100644
--- a/schemas/cache/pricing-options/cpa-option.json
+++ b/schemas/cache/pricing-options/cpa-option.json
@@ -1,34 +1,17 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CPA Pricing Option",
   "description": "Cost Per Acquisition pricing. Advertiser pays a fixed price when a specified conversion event occurs. The event_type field declares which event triggers billing (e.g., purchase, lead, app_install).",
+  "type": "object",
   "properties": {
-    "currency": {
-      "description": "ISO 4217 currency code",
-      "examples": [
-        "USD",
-        "EUR",
-        "GBP",
-        "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "custom_event_name": {
-      "description": "Name of the custom event when event_type is 'custom'. Required when event_type is 'custom', ignored otherwise.",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
     },
-    "event_source_id": {
-      "description": "When present, only events from this specific event source count toward billing. Allows different CPA rates for different sources (e.g., online vs in-store purchases). Must match an event source configured via sync_event_sources.",
-      "type": "string"
+    "pricing_model": {
+      "type": "string",
+      "const": "cpa",
+      "description": "Cost per acquisition (conversion event)"
     },
     "event_type": {
       "allOf": [
@@ -38,28 +21,46 @@
       ],
       "description": "The conversion event type that triggers billing (e.g., purchase, lead, app_install)"
     },
+    "custom_event_name": {
+      "type": "string",
+      "description": "Name of the custom event when event_type is 'custom'. Required when event_type is 'custom', ignored otherwise."
+    },
+    "event_source_id": {
+      "type": "string",
+      "description": "When present, only events from this specific event source count toward billing. Allows different CPA rates for different sources (e.g., online vs in-store purchases). Must match an event source configured via sync_event_sources."
+    },
+    "currency": {
+      "type": "string",
+      "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
+      "examples": [
+        "USD",
+        "EUR",
+        "GBP",
+        "JPY"
+      ]
+    },
     "fixed_price": {
+      "type": "number",
       "description": "Fixed price per acquisition in the specified currency",
-      "exclusiveMinimum": 0,
-      "type": "number"
+      "exclusiveMinimum": 0
     },
     "min_spend_per_package": {
+      "type": "number",
       "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_model": {
-      "const": "cpa",
-      "description": "Cost per acquisition (conversion event)",
-      "type": "string"
-    },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -69,6 +70,5 @@
     "currency",
     "fixed_price"
   ],
-  "title": "CPA Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/cpc-option.json b/schemas/cache/pricing-options/cpc-option.json
index 95070add6..6431c9d15 100644
--- a/schemas/cache/pricing-options/cpc-option.json
+++ b/schemas/cache/pricing-options/cpc-option.json
@@ -1,63 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CPC Pricing Option",
   "description": "Cost Per Click pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "cpc",
+      "description": "Cost per click"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Fixed price per click. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "max_bid": {
-      "default": false,
+      "type": "boolean",
       "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
-      "type": "boolean"
+      "default": false
+    },
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "min_spend_per_package": {
+      "type": "number",
       "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
-    },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_model": {
-      "const": "cpc",
-      "description": "Cost per click",
-      "type": "string"
-    },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -65,6 +66,5 @@
     "pricing_model",
     "currency"
   ],
-  "title": "CPC Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/cpcv-option.json b/schemas/cache/pricing-options/cpcv-option.json
index 38282bb6c..2e1664b39 100644
--- a/schemas/cache/pricing-options/cpcv-option.json
+++ b/schemas/cache/pricing-options/cpcv-option.json
@@ -1,63 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CPCV Pricing Option",
   "description": "Cost Per Completed View (100% video/audio completion) pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "cpcv",
+      "description": "Cost per completed view (100% completion)"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Fixed price per completed view. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "max_bid": {
-      "default": false,
+      "type": "boolean",
       "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
-      "type": "boolean"
+      "default": false
+    },
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "min_spend_per_package": {
+      "type": "number",
       "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
-    },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_model": {
-      "const": "cpcv",
-      "description": "Cost per completed view (100% completion)",
-      "type": "string"
-    },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -65,6 +66,5 @@
     "pricing_model",
     "currency"
   ],
-  "title": "CPCV Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/cpm-option.json b/schemas/cache/pricing-options/cpm-option.json
index 737dd80cb..749f33790 100644
--- a/schemas/cache/pricing-options/cpm-option.json
+++ b/schemas/cache/pricing-options/cpm-option.json
@@ -1,63 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CPM Pricing Option",
   "description": "Cost Per Mille (cost per 1,000 impressions) pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "cpm",
+      "description": "Cost per 1,000 impressions"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Fixed price per unit. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "max_bid": {
-      "default": false,
+      "type": "boolean",
       "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
-      "type": "boolean"
+      "default": false
+    },
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "min_spend_per_package": {
+      "type": "number",
       "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
-    },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_model": {
-      "const": "cpm",
-      "description": "Cost per 1,000 impressions",
-      "type": "string"
-    },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -65,6 +66,5 @@
     "pricing_model",
     "currency"
   ],
-  "title": "CPM Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/cpp-option.json b/schemas/cache/pricing-options/cpp-option.json
index ac8d4df49..061e1d0b6 100644
--- a/schemas/cache/pricing-options/cpp-option.json
+++ b/schemas/cache/pricing-options/cpp-option.json
@@ -1,81 +1,82 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CPP Pricing Option",
   "description": "Cost Per Point (Gross Rating Point) pricing for TV and audio campaigns. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "cpp",
+      "description": "Cost per Gross Rating Point"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Fixed price per rating point. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
-    "min_spend_per_package": {
-      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "parameters": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "CPP-specific parameters for demographic targeting",
       "properties": {
-        "demographic": {
-          "description": "Target demographic code within the specified demographic_system (e.g., P18-49 for Nielsen, ABC1 Adults for BARB)",
-          "type": "string"
-        },
         "demographic_system": {
           "$ref": "../enums/demographic-system.json",
           "description": "Measurement system for the demographic field. Defaults to nielsen when omitted."
         },
+        "demographic": {
+          "type": "string",
+          "description": "Target demographic code within the specified demographic_system (e.g., P18-49 for Nielsen, ABC1 Adults for BARB)"
+        },
         "min_points": {
+          "type": "number",
           "description": "Minimum GRPs/TRPs required",
-          "minimum": 0,
-          "type": "number"
+          "minimum": 0
         }
       },
       "required": [
         "demographic"
       ],
-      "type": "object"
-    },
-    "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
+      "additionalProperties": true
     },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+    "min_spend_per_package": {
+      "type": "number",
+      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+      "minimum": 0
     },
-    "pricing_model": {
-      "const": "cpp",
-      "description": "Cost per Gross Rating Point",
-      "type": "string"
+    "price_breakdown": {
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -84,6 +85,5 @@
     "currency",
     "parameters"
   ],
-  "title": "CPP Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/cpv-option.json b/schemas/cache/pricing-options/cpv-option.json
index f623fe749..4c5191003 100644
--- a/schemas/cache/pricing-options/cpv-option.json
+++ b/schemas/cache/pricing-options/cpv-option.json
@@ -1,73 +1,74 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "CPV Pricing Option",
   "description": "Cost Per View (at publisher-defined threshold) pricing for video/audio. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "cpv",
+      "description": "Cost per view at threshold"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Fixed price per view. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "max_bid": {
-      "default": false,
+      "type": "boolean",
       "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
-      "type": "boolean"
+      "default": false
     },
-    "min_spend_per_package": {
-      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "parameters": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "CPV-specific parameters defining the view threshold",
       "properties": {
         "view_threshold": {
           "oneOf": [
             {
+              "type": "number",
               "description": "Percentage completion threshold (0.0 to 1.0, e.g., 0.5 = 50%)",
-              "maximum": 1,
               "minimum": 0,
-              "type": "number"
+              "maximum": 1
             },
             {
-              "additionalProperties": true,
+              "type": "object",
               "description": "Time-based view threshold",
               "properties": {
                 "duration_seconds": {
+                  "type": "integer",
                   "description": "Seconds of viewing required",
-                  "minimum": 1,
-                  "type": "integer"
+                  "minimum": 1
                 }
               },
               "required": [
                 "duration_seconds"
               ],
-              "type": "object"
+              "additionalProperties": true
             }
           ]
         }
@@ -75,24 +76,24 @@
       "required": [
         "view_threshold"
       ],
-      "type": "object"
-    },
-    "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
+      "additionalProperties": true
     },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+    "min_spend_per_package": {
+      "type": "number",
+      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+      "minimum": 0
     },
-    "pricing_model": {
-      "const": "cpv",
-      "description": "Cost per view at threshold",
-      "type": "string"
+    "price_breakdown": {
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -101,6 +102,5 @@
     "currency",
     "parameters"
   ],
-  "title": "CPV Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/flat-rate-option.json b/schemas/cache/pricing-options/flat-rate-option.json
index 1ba26a6ed..aaea093b6 100644
--- a/schemas/cache/pricing-options/flat-rate-option.json
+++ b/schemas/cache/pricing-options/flat-rate-option.json
@@ -1,108 +1,109 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Flat Rate Pricing Option",
   "description": "Flat rate pricing for sponsorships, takeovers, and DOOH exclusive placements. A fixed total cost regardless of delivery volume. For duration-scaled pricing (rate \u00d7 time units), use the `time` model instead. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "flat_rate",
+      "description": "Fixed cost regardless of delivery volume"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Flat rate cost. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
-    "min_spend_per_package": {
-      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "parameters": {
-      "additionalProperties": true,
+      "title": "DoohParameters",
       "description": "DOOH inventory allocation parameters. Sponsorship and takeover flat_rate options omit this field entirely \u2014 only include for digital out-of-home inventory.",
+      "type": "object",
       "properties": {
-        "daypart": {
-          "description": "Named daypart for this slot (e.g., morning_commute, evening_rush)",
-          "type": "string"
-        },
-        "duration_hours": {
-          "description": "Duration of the DOOH slot in hours (e.g., 24 for a full-day takeover)",
-          "minimum": 0,
-          "type": "number"
+        "type": {
+          "type": "string",
+          "const": "dooh",
+          "description": "Discriminator identifying this as DOOH parameters"
         },
-        "estimated_impressions": {
-          "description": "Estimated audience impressions for this slot (informational, not a delivery guarantee)",
+        "sov_percentage": {
+          "type": "number",
+          "description": "Guaranteed share of voice as a percentage (0-100)",
           "minimum": 0,
-          "type": "integer"
+          "maximum": 100
         },
         "loop_duration_seconds": {
+          "type": "integer",
           "description": "Duration of the ad loop rotation in seconds",
-          "minimum": 1,
-          "type": "integer"
+          "minimum": 1
         },
         "min_plays_per_hour": {
+          "type": "integer",
           "description": "Minimum number of plays per hour guaranteed",
-          "minimum": 1,
-          "type": "integer"
+          "minimum": 1
         },
-        "sov_percentage": {
-          "description": "Guaranteed share of voice as a percentage (0-100)",
-          "maximum": 100,
-          "minimum": 0,
-          "type": "number"
+        "venue_package": {
+          "type": "string",
+          "description": "Named collection of screens included in this buy"
         },
-        "type": {
-          "const": "dooh",
-          "description": "Discriminator identifying this as DOOH parameters",
-          "type": "string"
+        "duration_hours": {
+          "type": "number",
+          "description": "Duration of the DOOH slot in hours (e.g., 24 for a full-day takeover)",
+          "minimum": 0
         },
-        "venue_package": {
-          "description": "Named collection of screens included in this buy",
-          "type": "string"
+        "daypart": {
+          "type": "string",
+          "description": "Named daypart for this slot (e.g., morning_commute, evening_rush)"
+        },
+        "estimated_impressions": {
+          "type": "integer",
+          "description": "Estimated audience impressions for this slot (informational, not a delivery guarantee)",
+          "minimum": 0
         }
       },
       "required": [
         "type"
       ],
-      "title": "DoohParameters",
-      "type": "object"
-    },
-    "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
+      "additionalProperties": true
     },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+    "min_spend_per_package": {
+      "type": "number",
+      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+      "minimum": 0
     },
-    "pricing_model": {
-      "const": "flat_rate",
-      "description": "Fixed cost regardless of delivery volume",
-      "type": "string"
+    "price_breakdown": {
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -110,6 +111,5 @@
     "pricing_model",
     "currency"
   ],
-  "title": "Flat Rate Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/price-breakdown.json b/schemas/cache/pricing-options/price-breakdown.json
index 0fbfcaeaa..648f86d99 100644
--- a/schemas/cache/pricing-options/price-breakdown.json
+++ b/schemas/cache/pricing-options/price-breakdown.json
@@ -1,45 +1,27 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Price Breakdown",
   "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+  "type": "object",
   "properties": {
+    "list_price": {
+      "type": "number",
+      "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
+      "exclusiveMinimum": 0
+    },
     "adjustments": {
+      "type": "array",
       "description": "Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price \u2014 fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
       "items": {
-        "additionalProperties": true,
-        "oneOf": [
-          {
-            "required": [
-              "rate"
-            ]
-          },
-          {
-            "required": [
-              "amount"
-            ]
-          }
-        ],
+        "type": "object",
         "properties": {
-          "amount": {
-            "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "beneficiary": {
-            "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
-            "maxLength": 256,
-            "type": "string"
-          },
-          "description": {
-            "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
-            "maxLength": 256,
-            "type": "string"
-          },
           "kind": {
             "$ref": "../enums/adjustment-kind.json"
           },
           "name": {
+            "type": "string",
             "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
+            "maxLength": 64,
             "examples": [
               "ad_serving",
               "data_targeting",
@@ -51,37 +33,55 @@
               "intermediary",
               "cash_discount",
               "early_payment"
-            ],
-            "maxLength": 64,
-            "type": "string"
+            ]
           },
           "rate": {
+            "type": "number",
             "description": "Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive \u2014 kind determines the economic effect. Mutually exclusive with amount.",
-            "exclusiveMaximum": 1,
             "exclusiveMinimum": 0,
-            "type": "number"
+            "exclusiveMaximum": 1
+          },
+          "amount": {
+            "type": "number",
+            "description": "Adjustment as a fixed monetary amount in the pricing option's currency. Always positive \u2014 kind determines the economic effect. Mutually exclusive with rate.",
+            "exclusiveMinimum": 0
+          },
+          "description": {
+            "type": "string",
+            "description": "Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            "maxLength": 256
+          },
+          "beneficiary": {
+            "type": "string",
+            "description": "Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            "maxLength": 256
           }
         },
         "required": [
           "kind",
           "name"
         ],
-        "type": "object"
+        "oneOf": [
+          {
+            "required": [
+              "rate"
+            ]
+          },
+          {
+            "required": [
+              "amount"
+            ]
+          }
+        ],
+        "additionalProperties": true
       },
-      "maxItems": 20,
       "minItems": 1,
-      "type": "array"
-    },
-    "list_price": {
-      "description": "Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.",
-      "exclusiveMinimum": 0,
-      "type": "number"
+      "maxItems": 20
     }
   },
   "required": [
     "list_price",
     "adjustments"
   ],
-  "title": "Price Breakdown",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/price-guidance.json b/schemas/cache/pricing-options/price-guidance.json
index 38ed78ce4..7bbb3c52b 100644
--- a/schemas/cache/pricing-options/price-guidance.json
+++ b/schemas/cache/pricing-options/price-guidance.json
@@ -1,29 +1,29 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Price Guidance",
   "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
+  "type": "object",
   "properties": {
     "p25": {
+      "type": "number",
       "description": "25th percentile of recent winning bids",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "p50": {
+      "type": "number",
       "description": "Median of recent winning bids",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "p75": {
+      "type": "number",
       "description": "75th percentile of recent winning bids",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "p90": {
+      "type": "number",
       "description": "90th percentile of recent winning bids",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     }
   },
-  "title": "Price Guidance",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/time-option.json b/schemas/cache/pricing-options/time-option.json
index c1720299b..4193083de 100644
--- a/schemas/cache/pricing-options/time-option.json
+++ b/schemas/cache/pricing-options/time-option.json
@@ -1,88 +1,89 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Time-Based Pricing Option",
   "description": "Cost per time unit (hour, day, week, or month) - rate scales with campaign duration. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "time",
+      "description": "Cost per time unit - rate scales with campaign duration"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Cost per time unit. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid per time unit for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
-    "min_spend_per_package": {
-      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "parameters": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Time-based pricing parameters",
+      "required": [
+        "time_unit"
+      ],
       "properties": {
-        "max_duration": {
-          "description": "Maximum booking duration in time_units. Must be >= min_duration when both are present.",
-          "minimum": 1,
-          "type": "integer"
-        },
-        "min_duration": {
-          "description": "Minimum booking duration in time_units",
-          "minimum": 1,
-          "type": "integer"
-        },
         "time_unit": {
-          "description": "The time unit for pricing. Total cost = fixed_price \u00d7 number of time_units in the campaign flight.",
+          "type": "string",
           "enum": [
             "hour",
             "day",
             "week",
             "month"
           ],
-          "type": "string"
+          "description": "The time unit for pricing. Total cost = fixed_price \u00d7 number of time_units in the campaign flight."
+        },
+        "min_duration": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Minimum booking duration in time_units"
+        },
+        "max_duration": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Maximum booking duration in time_units. Must be >= min_duration when both are present."
         }
       },
-      "required": [
-        "time_unit"
-      ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
-    },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+    "min_spend_per_package": {
+      "type": "number",
+      "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
+      "minimum": 0
     },
-    "pricing_model": {
-      "const": "time",
-      "description": "Cost per time unit - rate scales with campaign duration",
-      "type": "string"
+    "price_breakdown": {
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -91,6 +92,5 @@
     "currency",
     "parameters"
   ],
-  "title": "Time-Based Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/pricing-options/vcpm-option.json b/schemas/cache/pricing-options/vcpm-option.json
index 6e8e82cdf..2d86ae0e7 100644
--- a/schemas/cache/pricing-options/vcpm-option.json
+++ b/schemas/cache/pricing-options/vcpm-option.json
@@ -1,63 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "vCPM Pricing Option",
   "description": "Viewable Cost Per Mille (cost per 1,000 viewable impressions) pricing - MRC viewability standard. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
+  "type": "object",
   "properties": {
+    "pricing_option_id": {
+      "type": "string",
+      "description": "Unique identifier for this pricing option within the product"
+    },
+    "pricing_model": {
+      "type": "string",
+      "const": "vcpm",
+      "description": "Cost per 1,000 viewable impressions (MRC standard)"
+    },
     "currency": {
+      "type": "string",
       "description": "ISO 4217 currency code",
+      "pattern": "^[A-Z]{3}$",
       "examples": [
         "USD",
         "EUR",
         "GBP",
         "JPY"
-      ],
-      "pattern": "^[A-Z]{3}$",
-      "type": "string"
-    },
-    "eligible_adjustments": {
-      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
-      "items": {
-        "$ref": "../enums/adjustment-kind.json"
-      },
-      "type": "array",
-      "uniqueItems": true
+      ]
     },
     "fixed_price": {
+      "type": "number",
       "description": "Fixed price per unit. If present, this is fixed pricing. If absent, auction-based.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "floor_price": {
+      "type": "number",
       "description": "Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "max_bid": {
-      "default": false,
+      "type": "boolean",
       "description": "When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor.",
-      "type": "boolean"
+      "default": false
+    },
+    "price_guidance": {
+      "description": "Optional pricing guidance for auction-based bidding",
+      "$ref": "price-guidance.json"
     },
     "min_spend_per_package": {
+      "type": "number",
       "description": "Minimum spend requirement per package using this pricing option, in the specified currency",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "price_breakdown": {
-      "$ref": "price-breakdown.json",
-      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
-    },
-    "price_guidance": {
-      "$ref": "price-guidance.json",
-      "description": "Optional pricing guidance for auction-based bidding"
+      "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.",
+      "$ref": "price-breakdown.json"
     },
-    "pricing_model": {
-      "const": "vcpm",
-      "description": "Cost per 1,000 viewable impressions (MRC standard)",
-      "type": "string"
-    },
-    "pricing_option_id": {
-      "description": "Unique identifier for this pricing option within the product",
-      "type": "string"
+    "eligible_adjustments": {
+      "type": "array",
+      "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
+      "items": {
+        "$ref": "../enums/adjustment-kind.json"
+      },
+      "uniqueItems": true
     }
   },
   "required": [
@@ -65,6 +66,5 @@
     "pricing_model",
     "currency"
   ],
-  "title": "vCPM Pricing Option",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/property/authorization-result.json b/schemas/cache/property/authorization-result.json
new file mode 100644
index 000000000..2047a4d87
--- /dev/null
+++ b/schemas/cache/property/authorization-result.json
@@ -0,0 +1,49 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Authorization Result",
+  "description": "Result of validating sales agent authorization for a property. Checks if the sales agent is listed in the property's adagents.json.",
+  "type": "object",
+  "properties": {
+    "status": {
+      "type": "string",
+      "enum": [
+        "authorized",
+        "unauthorized",
+        "unknown"
+      ],
+      "description": "Authorization status: authorized (agent in adagents.json), unauthorized (agent not in adagents.json), unknown (could not fetch or parse adagents.json)"
+    },
+    "publisher_domain": {
+      "type": "string",
+      "description": "The publisher domain where adagents.json was checked"
+    },
+    "sales_agent_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "The sales agent URL that was validated"
+    },
+    "violation": {
+      "type": "object",
+      "description": "Details about the authorization failure (only present for unauthorized status)",
+      "properties": {
+        "code": {
+          "type": "string",
+          "description": "Machine-readable violation code"
+        },
+        "message": {
+          "type": "string",
+          "description": "Human-readable violation description"
+        }
+      },
+      "required": [
+        "code",
+        "message"
+      ],
+      "additionalProperties": false
+    }
+  },
+  "required": [
+    "status"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/property/base-property-source.json b/schemas/cache/property/base-property-source.json
index 8b06a93b4..3dc14ad12 100644
--- a/schemas/cache/property/base-property-source.json
+++ b/schemas/cache/property/base-property-source.json
@@ -1,31 +1,33 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Base Property Source",
   "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
   "discriminator": {
     "propertyName": "selection_type"
   },
   "oneOf": [
     {
-      "additionalProperties": false,
+      "type": "object",
+      "title": "Publisher Tags Source",
       "description": "Select properties from a publisher by tag membership",
       "properties": {
-        "publisher_domain": {
-          "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
-        },
         "selection_type": {
+          "type": "string",
           "const": "publisher_tags",
-          "description": "Discriminator indicating selection by property tags within a publisher",
-          "type": "string"
+          "description": "Discriminator indicating selection by property tags within a publisher"
+        },
+        "publisher_domain": {
+          "type": "string",
+          "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         },
         "tags": {
+          "type": "array",
           "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
           "items": {
             "$ref": "../core/property-tag.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
       },
       "required": [
@@ -33,30 +35,30 @@
         "publisher_domain",
         "tags"
       ],
-      "title": "Publisher Tags Source",
-      "type": "object"
+      "additionalProperties": false
     },
     {
-      "additionalProperties": false,
+      "type": "object",
+      "title": "Publisher Property IDs Source",
       "description": "Select specific properties from a publisher by ID",
       "properties": {
+        "selection_type": {
+          "type": "string",
+          "const": "publisher_ids",
+          "description": "Discriminator indicating selection by specific property IDs within a publisher"
+        },
+        "publisher_domain": {
+          "type": "string",
+          "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
         "property_ids": {
+          "type": "array",
           "description": "Specific property IDs from the publisher's adagents.json",
           "items": {
             "$ref": "../core/property-id.json"
           },
-          "minItems": 1,
-          "type": "array"
-        },
-        "publisher_domain": {
-          "description": "Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
-          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-          "type": "string"
-        },
-        "selection_type": {
-          "const": "publisher_ids",
-          "description": "Discriminator indicating selection by specific property IDs within a publisher",
-          "type": "string"
+          "minItems": 1
         }
       },
       "required": [
@@ -64,34 +66,32 @@
         "publisher_domain",
         "property_ids"
       ],
-      "title": "Publisher Property IDs Source",
-      "type": "object"
+      "additionalProperties": false
     },
     {
-      "additionalProperties": false,
+      "type": "object",
+      "title": "Direct Identifiers Source",
       "description": "Select properties by direct identifiers (domains, app IDs, etc.) without publisher context",
       "properties": {
+        "selection_type": {
+          "type": "string",
+          "const": "identifiers",
+          "description": "Discriminator indicating selection by direct identifiers"
+        },
         "identifiers": {
+          "type": "array",
           "description": "Direct property identifiers (domains, app IDs, etc.)",
           "items": {
             "$ref": "../core/identifier.json"
           },
-          "minItems": 1,
-          "type": "array"
-        },
-        "selection_type": {
-          "const": "identifiers",
-          "description": "Discriminator indicating selection by direct identifiers",
-          "type": "string"
+          "minItems": 1
         }
       },
       "required": [
         "selection_type",
         "identifiers"
       ],
-      "title": "Direct Identifiers Source",
-      "type": "object"
+      "additionalProperties": false
     }
-  ],
-  "title": "Base Property Source"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/property/create-property-list-request.json b/schemas/cache/property/create-property-list-request.json
index f0e99894c..d2716e224 100644
--- a/schemas/cache/property/create-property-list-request.json
+++ b/schemas/cache/property/create-property-list-request.json
@@ -1,48 +1,56 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Create Property List Request",
   "description": "Request parameters for creating a new property list",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of the list's purpose"
+    },
     "base_properties": {
+      "type": "array",
       "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
       "items": {
         "$ref": "base-property-source.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "filters": {
+      "$ref": "property-list-filters.json",
+      "description": "Dynamic filters to apply when resolving the list"
     },
     "brand": {
       "$ref": "../core/brand-ref.json",
       "description": "Brand reference. When provided, the agent automatically applies appropriate rules based on brand characteristics (industry, target_audience, etc.). Resolved at execution time."
     },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate property list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
     "context": {
       "$ref": "../core/context.json"
     },
-    "description": {
-      "description": "Description of the list's purpose",
-      "type": "string"
-    },
     "ext": {
       "$ref": "../core/ext.json"
-    },
-    "filters": {
-      "$ref": "property-list-filters.json",
-      "description": "Dynamic filters to apply when resolving the list"
-    },
-    "idempotency_key": {
-      "description": "Client-generated unique key for this request. Prevents duplicate property list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
-      "minLength": 16,
-      "type": "string"
-    },
-    "name": {
-      "description": "Human-readable name for the list",
-      "type": "string"
     }
   },
   "required": [
+    "idempotency_key",
     "name"
   ],
-  "title": "Create Property List Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/create-property-list-response.json b/schemas/cache/property/create-property-list-response.json
index 1f0762f25..cf3f3a729 100644
--- a/schemas/cache/property/create-property-list-response.json
+++ b/schemas/cache/property/create-property-list-response.json
@@ -1,24 +1,27 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Create Property List Response",
   "description": "Response payload for create_property_list task",
+  "type": "object",
   "properties": {
+    "list": {
+      "$ref": "property-list.json",
+      "description": "The created property list"
+    },
     "auth_token": {
-      "description": "Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time.",
-      "type": "string"
+      "type": "string",
+      "description": "Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time."
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
-    },
-    "list": {
-      "$ref": "property-list.json",
-      "description": "The created property list"
     }
   },
   "required": [
     "list",
     "auth_token"
   ],
-  "title": "Create Property List Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/delete-property-list-request.json b/schemas/cache/property/delete-property-list-request.json
index 6cadea38e..8b1643ccd 100644
--- a/schemas/cache/property/delete-property-list-request.json
+++ b/schemas/cache/property/delete-property-list-request.json
@@ -1,8 +1,19 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Delete Property List Request",
   "description": "Request parameters for deleting a property list",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list to delete"
+    },
     "context": {
       "$ref": "../core/context.json"
     },
@@ -10,19 +21,16 @@
       "$ref": "../core/ext.json"
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
-    },
-    "list_id": {
-      "description": "ID of the property list to delete",
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     }
   },
   "required": [
+    "idempotency_key",
     "list_id"
   ],
-  "title": "Delete Property List Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/delete-property-list-response.json b/schemas/cache/property/delete-property-list-response.json
index f457ee5ca..72606b098 100644
--- a/schemas/cache/property/delete-property-list-response.json
+++ b/schemas/cache/property/delete-property-list-response.json
@@ -1,24 +1,27 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Delete Property List Response",
   "description": "Response payload for delete_property_list task",
+  "type": "object",
   "properties": {
     "deleted": {
-      "description": "Whether the list was successfully deleted",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Whether the list was successfully deleted"
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the deleted list"
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
-    },
-    "list_id": {
-      "description": "ID of the deleted list",
-      "type": "string"
     }
   },
   "required": [
     "deleted",
     "list_id"
   ],
-  "title": "Delete Property List Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/delivery-record.json b/schemas/cache/property/delivery-record.json
new file mode 100644
index 000000000..d3688513e
--- /dev/null
+++ b/schemas/cache/property/delivery-record.json
@@ -0,0 +1,34 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Delivery Record",
+  "description": "A single delivery record representing impressions served to a property identifier. Used as input to validate_property_delivery.",
+  "type": "object",
+  "properties": {
+    "identifier": {
+      "$ref": "../core/identifier.json",
+      "description": "The property identifier where impressions were delivered"
+    },
+    "impressions": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of impressions delivered to this identifier"
+    },
+    "record_id": {
+      "type": "string",
+      "description": "Optional client-provided ID for correlating results back to source data"
+    },
+    "sales_agent_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL of the sales agent that sold this inventory. If provided, authorization is validated against the property's adagents.json."
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "identifier",
+    "impressions"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/property/feature-requirement.json b/schemas/cache/property/feature-requirement.json
deleted file mode 100644
index 4489674a9..000000000
--- a/schemas/cache/property/feature-requirement.json
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "description": "A feature-based requirement for property filtering. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
-  "properties": {
-    "allowed_values": {
-      "description": "Values that pass the requirement (for binary/categorical features)",
-      "items": {},
-      "minItems": 1,
-      "type": "array"
-    },
-    "feature_id": {
-      "description": "Feature to evaluate (discovered via get_adcp_capabilities)",
-      "type": "string"
-    },
-    "if_not_covered": {
-      "default": "exclude",
-      "description": "How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open).",
-      "enum": [
-        "exclude",
-        "include"
-      ],
-      "type": "string"
-    },
-    "max_value": {
-      "description": "Maximum numeric value allowed (for quantitative features)",
-      "type": "number"
-    },
-    "min_value": {
-      "description": "Minimum numeric value required (for quantitative features)",
-      "type": "number"
-    }
-  },
-  "required": [
-    "feature_id"
-  ],
-  "title": "Feature Requirement",
-  "type": "object"
-}
\ No newline at end of file
diff --git a/schemas/cache/property/get-property-list-request.json b/schemas/cache/property/get-property-list-request.json
index 3664cc089..7b313bebb 100644
--- a/schemas/cache/property/get-property-list-request.json
+++ b/schemas/cache/property/get-property-list-request.json
@@ -1,45 +1,51 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Get Property List Request",
   "description": "Request parameters for retrieving a property list with resolved identifiers",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "list_id": {
-      "description": "ID of the property list to retrieve",
-      "type": "string"
+      "type": "string",
+      "description": "ID of the property list to retrieve"
+    },
+    "resolve": {
+      "type": "boolean",
+      "description": "Whether to apply filters and return resolved identifiers (default: true)",
+      "default": true
     },
     "pagination": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Pagination parameters. Uses higher limits than standard pagination because property lists can contain tens of thousands of identifiers.",
       "properties": {
-        "cursor": {
-          "description": "Opaque cursor from a previous response to fetch the next page",
-          "type": "string"
-        },
         "max_results": {
-          "default": 1000,
-          "description": "Maximum number of identifiers to return per page",
-          "maximum": 10000,
+          "type": "integer",
           "minimum": 1,
-          "type": "integer"
+          "maximum": 10000,
+          "default": 1000,
+          "description": "Maximum number of identifiers to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
         }
       },
-      "type": "object"
+      "additionalProperties": false
     },
-    "resolve": {
-      "default": true,
-      "description": "Whether to apply filters and return resolved identifiers (default: true)",
-      "type": "boolean"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "list_id"
   ],
-  "title": "Get Property List Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/get-property-list-response.json b/schemas/cache/property/get-property-list-response.json
index 39403e366..776198ef2 100644
--- a/schemas/cache/property/get-property-list-response.json
+++ b/schemas/cache/property/get-property-list-response.json
@@ -1,49 +1,52 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Get Property List Response",
   "description": "Response payload for get_property_list task. Returns identifiers only (not full property objects or scores). Consumers should cache the resolved identifiers and refresh based on cache_valid_until.",
+  "type": "object",
   "properties": {
-    "cache_valid_until": {
-      "description": "Cache expiration timestamp. Re-fetch the list after this time to get updated identifiers.",
-      "format": "date-time",
-      "type": "string"
-    },
-    "coverage_gaps": {
-      "additionalProperties": {
-        "items": {
-          "$ref": "../core/identifier.json"
-        },
-        "type": "array"
-      },
-      "description": "Properties included in the list despite missing feature data. Only present when a feature_requirement has if_not_covered='include'. Maps feature_id to list of identifiers not covered for that feature.",
-      "type": "object"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "list": {
+      "$ref": "property-list.json",
+      "description": "The property list metadata (always returned)"
     },
     "identifiers": {
+      "type": "array",
       "description": "Resolved identifiers that passed filters (if resolve=true). Cache these locally for real-time use.",
       "items": {
         "$ref": "../core/identifier.json"
-      },
-      "type": "array"
-    },
-    "list": {
-      "$ref": "property-list.json",
-      "description": "The property list metadata (always returned)"
+      }
     },
     "pagination": {
       "$ref": "../core/pagination-response.json"
     },
     "resolved_at": {
-      "description": "When the list was resolved",
+      "type": "string",
+      "format": "date-time",
+      "description": "When the list was resolved"
+    },
+    "cache_valid_until": {
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Cache expiration timestamp. Re-fetch the list after this time to get updated identifiers."
+    },
+    "coverage_gaps": {
+      "type": "object",
+      "description": "Properties included in the list despite missing feature data. Only present when a feature_requirement has if_not_covered='include'. Maps feature_id to list of identifiers not covered for that feature.",
+      "additionalProperties": {
+        "type": "array",
+        "items": {
+          "$ref": "../core/identifier.json"
+        }
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "list"
   ],
-  "title": "Get Property List Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/list-property-lists-request.json b/schemas/cache/property/list-property-lists-request.json
index 7b1c22721..148e4945a 100644
--- a/schemas/cache/property/list-property-lists-request.json
+++ b/schemas/cache/property/list-property-lists-request.json
@@ -1,26 +1,32 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "List Property Lists Request",
   "description": "Request parameters for listing property lists",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "principal": {
+      "type": "string",
+      "description": "Filter to lists owned by this principal"
     },
     "name_contains": {
-      "description": "Filter to lists whose name contains this string",
-      "type": "string"
+      "type": "string",
+      "description": "Filter to lists whose name contains this string"
     },
     "pagination": {
       "$ref": "../core/pagination-request.json"
     },
-    "principal": {
-      "description": "Filter to lists owned by this principal",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "List Property Lists Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/list-property-lists-response.json b/schemas/cache/property/list-property-lists-response.json
index 2e49450d2..d91ce3031 100644
--- a/schemas/cache/property/list-property-lists-response.json
+++ b/schemas/cache/property/list-property-lists-response.json
@@ -1,25 +1,28 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "List Property Lists Response",
   "description": "Response payload for list_property_lists task",
+  "type": "object",
   "properties": {
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
     "lists": {
+      "type": "array",
       "description": "Array of property lists (metadata only, not resolved properties)",
       "items": {
         "$ref": "property-list.json"
-      },
-      "type": "array"
+      }
     },
     "pagination": {
       "$ref": "../core/pagination-response.json"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "lists"
   ],
-  "title": "List Property Lists Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/property-error.json b/schemas/cache/property/property-error.json
index efccf90f8..c677d7b9e 100644
--- a/schemas/cache/property/property-error.json
+++ b/schemas/cache/property/property-error.json
@@ -1,9 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Property Error",
   "description": "Error information for a property that could not be evaluated",
+  "type": "object",
   "properties": {
     "code": {
+      "type": "string",
       "description": "Error code",
       "enum": [
         "PROPERTY_NOT_FOUND",
@@ -12,22 +14,20 @@
         "LIST_ACCESS_DENIED",
         "METHODOLOGY_NOT_SUPPORTED",
         "JURISDICTION_NOT_SUPPORTED"
-      ],
-      "type": "string"
-    },
-    "message": {
-      "description": "Human-readable error message",
-      "type": "string"
+      ]
     },
     "property": {
       "$ref": "../core/property.json",
       "description": "The property that caused the error"
+    },
+    "message": {
+      "type": "string",
+      "description": "Human-readable error message"
     }
   },
   "required": [
     "code",
     "message"
   ],
-  "title": "Property Error",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/property-feature-definition.json b/schemas/cache/property/property-feature-definition.json
index bc2c2620a..c35850693 100644
--- a/schemas/cache/property/property-feature-definition.json
+++ b/schemas/cache/property/property-feature-definition.json
@@ -1,87 +1,88 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Property Feature Definition",
   "description": "Defines a feature that a governance agent can evaluate for properties. Used in get_adcp_capabilities to advertise agent capabilities.",
+  "type": "object",
   "properties": {
+    "feature_id": {
+      "type": "string",
+      "description": "Unique identifier for this feature (e.g., 'consent_quality', 'carbon_score'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:us_coppa', 'registry:uk_hfss'). Unprefixed feature IDs are agent-defined."
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for the feature"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of what this feature measures or represents"
+    },
+    "type": {
+      "type": "string",
+      "enum": [
+        "binary",
+        "quantitative",
+        "categorical"
+      ],
+      "description": "The type of values this feature produces: binary (true/false), quantitative (numeric range), categorical (enumerated values)"
+    },
+    "range": {
+      "type": "object",
+      "description": "For quantitative features, the valid range of values",
+      "properties": {
+        "min": {
+          "type": "number",
+          "description": "Minimum value"
+        },
+        "max": {
+          "type": "number",
+          "description": "Maximum value"
+        }
+      },
+      "required": [
+        "min",
+        "max"
+      ],
+      "additionalProperties": false
+    },
     "allowed_values": {
+      "type": "array",
       "description": "For categorical features, the set of valid values",
       "items": {
         "type": "string"
-      },
-      "type": "array"
+      }
     },
     "coverage": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "What this feature covers (empty arrays = all)",
       "properties": {
-        "countries": {
-          "description": "Countries where this feature is available",
+        "property_types": {
+          "type": "array",
+          "description": "Property types this feature applies to",
           "items": {
             "type": "string"
-          },
-          "type": "array"
+          }
         },
-        "property_types": {
-          "description": "Property types this feature applies to",
+        "countries": {
+          "type": "array",
+          "description": "Countries where this feature is available",
           "items": {
             "type": "string"
-          },
-          "type": "array"
+          }
         }
       },
-      "type": "object"
-    },
-    "description": {
-      "description": "Description of what this feature measures or represents",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "feature_id": {
-      "description": "Unique identifier for this feature (e.g., 'consent_quality', 'carbon_score'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:us_coppa', 'registry:uk_hfss'). Unprefixed feature IDs are agent-defined.",
-      "type": "string"
+      "additionalProperties": false
     },
     "methodology_url": {
-      "description": "URL to documentation explaining how this feature is calculated/measured",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "URL to documentation explaining how this feature is calculated/measured"
     },
     "methodology_version": {
-      "description": "Version identifier for the methodology (for audit trails)",
-      "type": "string"
+      "type": "string",
+      "description": "Version identifier for the methodology (for audit trails)"
     },
-    "name": {
-      "description": "Human-readable name for the feature",
-      "type": "string"
-    },
-    "range": {
-      "additionalProperties": false,
-      "description": "For quantitative features, the valid range of values",
-      "properties": {
-        "max": {
-          "description": "Maximum value",
-          "type": "number"
-        },
-        "min": {
-          "description": "Minimum value",
-          "type": "number"
-        }
-      },
-      "required": [
-        "min",
-        "max"
-      ],
-      "type": "object"
-    },
-    "type": {
-      "description": "The type of values this feature produces: binary (true/false), quantitative (numeric range), categorical (enumerated values)",
-      "enum": [
-        "binary",
-        "quantitative",
-        "categorical"
-      ],
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -90,6 +91,5 @@
     "type",
     "methodology_url"
   ],
-  "title": "Property Feature Definition",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/property-feature-result.json b/schemas/cache/property/property-feature-result.json
new file mode 100644
index 000000000..d7349fb96
--- /dev/null
+++ b/schemas/cache/property/property-feature-result.json
@@ -0,0 +1,49 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Property Feature Result",
+  "description": "Feature values for a single property from a governance agent.",
+  "type": "object",
+  "properties": {
+    "property": {
+      "oneOf": [
+        {
+          "type": "string",
+          "description": "Domain string (e.g., 'example.com')"
+        },
+        {
+          "$ref": "../core/property-id.json"
+        }
+      ],
+      "description": "The property these features apply to"
+    },
+    "features": {
+      "type": "object",
+      "description": "Map of feature_id to feature value",
+      "additionalProperties": {
+        "$ref": "property-feature-value.json"
+      }
+    },
+    "coverage_status": {
+      "type": "string",
+      "enum": [
+        "covered",
+        "not_covered",
+        "pending"
+      ],
+      "description": "Whether this property is covered by this governance agent: covered (has data), not_covered (not measured), pending (measurement in progress)"
+    },
+    "last_evaluated": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When features were last evaluated for this property"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "property",
+    "coverage_status"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/property/property-feature-value.json b/schemas/cache/property/property-feature-value.json
new file mode 100644
index 000000000..51fdb1ffb
--- /dev/null
+++ b/schemas/cache/property/property-feature-value.json
@@ -0,0 +1,58 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Property Feature Value",
+  "description": "A single feature value for a property. Structure varies by feature type (binary, quantitative, categorical).",
+  "type": "object",
+  "properties": {
+    "value": {
+      "description": "The feature value. Type depends on feature definition: boolean for binary, number for quantitative, string for categorical.",
+      "oneOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    "unit": {
+      "type": "string",
+      "description": "Unit of measurement for quantitative values (e.g., 'gCO2e/1000_impressions', 'percentage')"
+    },
+    "confidence": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 1,
+      "description": "Confidence score for this value (0-1)"
+    },
+    "measured_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this specific value was measured"
+    },
+    "expires_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When this certification/value expires (for time-limited certifications)"
+    },
+    "methodology_version": {
+      "type": "string",
+      "description": "Version of the methodology used to calculate this value"
+    },
+    "details": {
+      "type": "object",
+      "description": "Additional vendor-specific details about this measurement",
+      "additionalProperties": true
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "value"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/property/property-feature.json b/schemas/cache/property/property-feature.json
index c2869ffe3..1b2b24a8b 100644
--- a/schemas/cache/property/property-feature.json
+++ b/schemas/cache/property/property-feature.json
@@ -1,25 +1,25 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Property Feature",
   "description": "A discrete feature assessment for a property (e.g., from app store privacy labels)",
+  "type": "object",
   "properties": {
     "feature_id": {
-      "description": "Identifier for the feature being assessed",
-      "type": "string"
-    },
-    "source": {
-      "description": "Source of the feature data (e.g., app_store_privacy_label, tcf_string)",
-      "type": "string"
+      "type": "string",
+      "description": "Identifier for the feature being assessed"
     },
     "value": {
-      "description": "The feature value",
-      "type": "string"
+      "type": "string",
+      "description": "The feature value"
+    },
+    "source": {
+      "type": "string",
+      "description": "Source of the feature data (e.g., app_store_privacy_label, tcf_string)"
     }
   },
   "required": [
     "feature_id",
     "value"
   ],
-  "title": "Property Feature",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/property-list-changed-webhook.json b/schemas/cache/property/property-list-changed-webhook.json
index eb9dc0a1b..7893c2105 100644
--- a/schemas/cache/property/property-list-changed-webhook.json
+++ b/schemas/cache/property/property-list-changed-webhook.json
@@ -1,56 +1,57 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Property List Changed Webhook",
   "description": "Webhook notification sent when a property list's resolved properties change. Contains a summary only - recipients must call get_property_list to retrieve the updated properties. This keeps payloads small and avoids redundant data transfer.",
+  "type": "object",
   "properties": {
-    "cache_valid_until": {
-      "description": "When the consumer should refresh from the governance agent",
-      "format": "date-time",
-      "type": "string"
+    "event": {
+      "type": "string",
+      "const": "property_list_changed",
+      "description": "The event type"
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list that changed"
+    },
+    "list_name": {
+      "type": "string",
+      "description": "Name of the property list"
     },
     "change_summary": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Summary of changes to the resolved list",
       "properties": {
         "properties_added": {
-          "description": "Number of properties added since last resolution",
-          "type": "integer"
+          "type": "integer",
+          "description": "Number of properties added since last resolution"
         },
         "properties_removed": {
-          "description": "Number of properties removed since last resolution",
-          "type": "integer"
+          "type": "integer",
+          "description": "Number of properties removed since last resolution"
         },
         "total_properties": {
-          "description": "Total properties in the resolved list",
-          "type": "integer"
+          "type": "integer",
+          "description": "Total properties in the resolved list"
         }
       },
-      "type": "object"
-    },
-    "event": {
-      "const": "property_list_changed",
-      "description": "The event type",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "list_id": {
-      "description": "ID of the property list that changed",
-      "type": "string"
-    },
-    "list_name": {
-      "description": "Name of the property list",
-      "type": "string"
+      "additionalProperties": false
     },
     "resolved_at": {
-      "description": "When the list was re-resolved",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When the list was re-resolved"
+    },
+    "cache_valid_until": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the consumer should refresh from the governance agent"
     },
     "signature": {
-      "description": "Cryptographic signature of the webhook payload, signed with the agent's private key. Recipients MUST verify this signature.",
-      "type": "string"
+      "type": "string",
+      "description": "Cryptographic signature of the webhook payload, signed with the agent's private key. Recipients MUST verify this signature."
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
@@ -59,6 +60,5 @@
     "resolved_at",
     "signature"
   ],
-  "title": "Property List Changed Webhook",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/property-list-filters.json b/schemas/cache/property/property-list-filters.json
index 520af2641..6d6fdecba 100644
--- a/schemas/cache/property/property-list-filters.json
+++ b/schemas/cache/property/property-list-filters.json
@@ -1,50 +1,50 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Property List Filters",
   "description": "Filters that dynamically modify a property list when resolved",
+  "type": "object",
   "properties": {
-    "channels_any": {
-      "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
+    "countries_all": {
+      "type": "array",
+      "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
       "items": {
-        "$ref": "../enums/channels.json"
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "countries_all": {
-      "description": "Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.",
+    "channels_any": {
+      "type": "array",
+      "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
       "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
+        "$ref": "../enums/channels.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "exclude_identifiers": {
-      "description": "Identifiers to always exclude from results",
+    "property_types": {
+      "type": "array",
+      "description": "Filter to these property types",
       "items": {
-        "$ref": "../core/identifier.json"
+        "$ref": "../enums/property-type.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "feature_requirements": {
+      "type": "array",
       "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
       "items": {
-        "$ref": "feature-requirement.json"
+        "$ref": "../core/feature-requirement.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "property_types": {
-      "description": "Filter to these property types",
+    "exclude_identifiers": {
+      "type": "array",
+      "description": "Identifiers to always exclude from results",
       "items": {
-        "$ref": "../enums/property-type.json"
+        "$ref": "../core/identifier.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     }
   },
-  "title": "Property List Filters",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/property-list.json b/schemas/cache/property/property-list.json
index 59f189ca9..69b8b8f36 100644
--- a/schemas/cache/property/property-list.json
+++ b/schemas/cache/property/property-list.json
@@ -1,69 +1,77 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Property List",
   "description": "A managed property list with optional filters for dynamic evaluation. Lists are resolved at setup time and cached by orchestrators/sellers for real-time use.",
+  "type": "object",
   "properties": {
+    "list_id": {
+      "type": "string",
+      "description": "Unique identifier for this property list"
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of the list's purpose"
+    },
+    "principal": {
+      "type": "string",
+      "description": "Principal identity that owns this list"
+    },
     "base_properties": {
+      "type": "array",
       "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
       "items": {
         "$ref": "base-property-source.json"
-      },
-      "type": "array"
+      }
+    },
+    "filters": {
+      "$ref": "property-list-filters.json",
+      "description": "Dynamic filters applied when resolving the list"
     },
     "brand": {
       "$ref": "../core/brand-ref.json",
       "description": "Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time."
     },
+    "webhook_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to receive notifications when the resolved list changes"
+    },
     "cache_duration_hours": {
-      "default": 24,
+      "type": "integer",
       "description": "Recommended cache duration for resolved list. Consumers should re-fetch after this period.",
       "minimum": 1,
-      "type": "integer"
+      "default": 24
     },
     "created_at": {
-      "description": "When the list was created",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
-    },
-    "description": {
-      "description": "Description of the list's purpose",
-      "type": "string"
-    },
-    "filters": {
-      "$ref": "property-list-filters.json",
-      "description": "Dynamic filters applied when resolving the list"
-    },
-    "list_id": {
-      "description": "Unique identifier for this property list",
-      "type": "string"
-    },
-    "name": {
-      "description": "Human-readable name for the list",
-      "type": "string"
-    },
-    "principal": {
-      "description": "Principal identity that owns this list",
-      "type": "string"
-    },
-    "property_count": {
-      "description": "Number of properties in the resolved list (at time of last resolution)",
-      "type": "integer"
+      "description": "When the list was created"
     },
     "updated_at": {
-      "description": "When the list was last modified",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When the list was last modified"
     },
-    "webhook_url": {
-      "description": "URL to receive notifications when the resolved list changes",
-      "format": "uri",
-      "type": "string"
+    "property_count": {
+      "type": "integer",
+      "description": "Number of properties in the resolved list (at time of last resolution)"
+    },
+    "pricing_options": {
+      "type": "array",
+      "description": "Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.",
+      "items": {
+        "$ref": "../core/vendor-pricing-option.json"
+      },
+      "minItems": 1
     }
   },
   "required": [
     "list_id",
     "name"
   ],
-  "title": "Property List",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/update-property-list-request.json b/schemas/cache/property/update-property-list-request.json
index 009b4926a..1e896339e 100644
--- a/schemas/cache/property/update-property-list-request.json
+++ b/schemas/cache/property/update-property-list-request.json
@@ -1,56 +1,64 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Update Property List Request",
   "description": "Request parameters for updating an existing property list",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list to update"
+    },
+    "name": {
+      "type": "string",
+      "description": "New name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "New description"
+    },
     "base_properties": {
+      "type": "array",
       "description": "Complete replacement for the base properties list (not a patch). Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers).",
       "items": {
         "$ref": "base-property-source.json"
-      },
-      "type": "array"
+      }
+    },
+    "filters": {
+      "$ref": "property-list-filters.json",
+      "description": "Complete replacement for the filters (not a patch)"
     },
     "brand": {
       "$ref": "../core/brand-ref.json",
       "description": "Update brand reference. Resolved to full brand identity at execution time."
     },
+    "webhook_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Update the webhook URL for list change notifications (set to empty string to remove)"
+    },
     "context": {
       "$ref": "../core/context.json"
     },
-    "description": {
-      "description": "New description",
-      "type": "string"
-    },
     "ext": {
       "$ref": "../core/ext.json"
     },
-    "filters": {
-      "$ref": "property-list-filters.json",
-      "description": "Complete replacement for the filters (not a patch)"
-    },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
-    },
-    "list_id": {
-      "description": "ID of the property list to update",
-      "type": "string"
-    },
-    "name": {
-      "description": "New name for the list",
-      "type": "string"
-    },
-    "webhook_url": {
-      "description": "Update the webhook URL for list change notifications (set to empty string to remove)",
-      "format": "uri",
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     }
   },
   "required": [
+    "idempotency_key",
     "list_id"
   ],
-  "title": "Update Property List Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/update-property-list-response.json b/schemas/cache/property/update-property-list-response.json
index 3586c0c77..4b3370209 100644
--- a/schemas/cache/property/update-property-list-response.json
+++ b/schemas/cache/property/update-property-list-response.json
@@ -1,19 +1,22 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Update Property List Response",
   "description": "Response payload for update_property_list task",
+  "type": "object",
   "properties": {
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
     "list": {
       "$ref": "property-list.json",
       "description": "The updated property list"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "list"
   ],
-  "title": "Update Property List Response",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/property/validate-property-delivery-request.json b/schemas/cache/property/validate-property-delivery-request.json
new file mode 100644
index 000000000..cb547627a
--- /dev/null
+++ b/schemas/cache/property/validate-property-delivery-request.json
@@ -0,0 +1,43 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Property Delivery Request",
+  "description": "Request payload for validate_property_delivery task. Validates delivery records against a property list to determine compliance.",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list to validate against"
+    },
+    "records": {
+      "type": "array",
+      "description": "Delivery records to validate. Each record represents impressions delivered to a property identifier.",
+      "items": {
+        "$ref": "delivery-record.json"
+      },
+      "minItems": 1,
+      "maxItems": 10000
+    },
+    "include_compliant": {
+      "type": "boolean",
+      "default": false,
+      "description": "Include compliant records in results (default: only return non_compliant, unmodeled, and unidentified)"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "list_id",
+    "records"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/property/validate-property-delivery-response.json b/schemas/cache/property/validate-property-delivery-response.json
new file mode 100644
index 000000000..e232cf50a
--- /dev/null
+++ b/schemas/cache/property/validate-property-delivery-response.json
@@ -0,0 +1,174 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validate Property Delivery Response",
+  "description": "Response payload for validate_property_delivery task. Returns aggregate compliance statistics and per-record validation results.",
+  "type": "object",
+  "properties": {
+    "list_id": {
+      "type": "string",
+      "description": "ID of the property list validated against"
+    },
+    "summary": {
+      "type": "object",
+      "description": "Aggregate validation statistics",
+      "properties": {
+        "total_records": {
+          "type": "integer",
+          "description": "Total number of records validated"
+        },
+        "total_impressions": {
+          "type": "integer",
+          "description": "Total impressions across all records"
+        },
+        "compliant_records": {
+          "type": "integer",
+          "description": "Number of records with compliant status"
+        },
+        "compliant_impressions": {
+          "type": "integer",
+          "description": "Impressions from compliant records"
+        },
+        "non_compliant_records": {
+          "type": "integer",
+          "description": "Number of records with non_compliant status"
+        },
+        "non_compliant_impressions": {
+          "type": "integer",
+          "description": "Impressions from non_compliant records"
+        },
+        "not_covered_records": {
+          "type": "integer",
+          "description": "Number of records where identifier was recognized but no data available"
+        },
+        "not_covered_impressions": {
+          "type": "integer",
+          "description": "Impressions from not_covered records"
+        },
+        "unidentified_records": {
+          "type": "integer",
+          "description": "Number of records where identifier type was not resolvable"
+        },
+        "unidentified_impressions": {
+          "type": "integer",
+          "description": "Impressions from unidentified records"
+        }
+      },
+      "required": [
+        "total_records",
+        "total_impressions",
+        "compliant_records",
+        "compliant_impressions",
+        "non_compliant_records",
+        "non_compliant_impressions",
+        "not_covered_records",
+        "not_covered_impressions",
+        "unidentified_records",
+        "unidentified_impressions"
+      ],
+      "additionalProperties": false
+    },
+    "aggregate": {
+      "type": "object",
+      "description": "Optional aggregate measurements computed by the governance agent. Format and meaning are agent-specific.",
+      "properties": {
+        "score": {
+          "type": "number",
+          "description": "Numeric score (0-100 scale typical, but agent-defined)"
+        },
+        "grade": {
+          "type": "string",
+          "description": "Letter grade or category (e.g., 'A+', 'B-', 'Gold', 'Compliant')"
+        },
+        "label": {
+          "type": "string",
+          "description": "Human-readable summary (e.g., '85% compliant', 'High quality')"
+        },
+        "methodology_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL explaining how this aggregate was calculated"
+        }
+      },
+      "additionalProperties": true
+    },
+    "authorization_summary": {
+      "type": "object",
+      "description": "Aggregate authorization statistics. Only present if any records included sales_agent_url.",
+      "properties": {
+        "records_checked": {
+          "type": "integer",
+          "description": "Number of records with sales_agent_url provided"
+        },
+        "impressions_checked": {
+          "type": "integer",
+          "description": "Total impressions from records with sales_agent_url"
+        },
+        "authorized_records": {
+          "type": "integer",
+          "description": "Number of records where sales agent was authorized"
+        },
+        "authorized_impressions": {
+          "type": "integer",
+          "description": "Impressions from authorized records"
+        },
+        "unauthorized_records": {
+          "type": "integer",
+          "description": "Number of records where sales agent was NOT authorized"
+        },
+        "unauthorized_impressions": {
+          "type": "integer",
+          "description": "Impressions from unauthorized records"
+        },
+        "unknown_records": {
+          "type": "integer",
+          "description": "Number of records where authorization could not be determined (adagents.json unavailable)"
+        },
+        "unknown_impressions": {
+          "type": "integer",
+          "description": "Impressions from records where authorization could not be determined"
+        }
+      },
+      "required": [
+        "records_checked",
+        "impressions_checked",
+        "authorized_records",
+        "authorized_impressions",
+        "unauthorized_records",
+        "unauthorized_impressions",
+        "unknown_records",
+        "unknown_impressions"
+      ],
+      "additionalProperties": false
+    },
+    "results": {
+      "type": "array",
+      "description": "Per-record validation results. By default only includes non_compliant and unknown records. Set include_compliant=true to include all records.",
+      "items": {
+        "$ref": "validation-result.json"
+      }
+    },
+    "validated_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Timestamp when validation was performed"
+    },
+    "list_resolved_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Timestamp of the property list resolution used for validation"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "list_id",
+    "summary",
+    "results",
+    "validated_at"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/property/validation-result.json b/schemas/cache/property/validation-result.json
new file mode 100644
index 000000000..13e0fd480
--- /dev/null
+++ b/schemas/cache/property/validation-result.json
@@ -0,0 +1,105 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Validation Result",
+  "description": "Result of validating a single delivery record against a property list.",
+  "type": "object",
+  "properties": {
+    "identifier": {
+      "$ref": "../core/identifier.json",
+      "description": "The identifier that was validated"
+    },
+    "record_id": {
+      "type": "string",
+      "description": "Client-provided ID from the delivery record (if provided)"
+    },
+    "status": {
+      "type": "string",
+      "enum": [
+        "compliant",
+        "non_compliant",
+        "not_covered",
+        "unidentified"
+      ],
+      "description": "Validation status: compliant (in list), non_compliant (not in list), not_covered (identifier recognized but no data available), unidentified (identifier type not resolvable by this governance agent)"
+    },
+    "impressions": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of impressions from this record"
+    },
+    "features": {
+      "type": "array",
+      "description": "Per-feature breakdown for this record. SHOULD include all failed and warning features. MAY include passed features. For property validation the buyer authored the requirement, so the `requirement` that was not met MAY be echoed back on failures \u2014 this is contract data, not evaluator IP.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "feature_id": {
+            "type": "string",
+            "description": "Which feature was evaluated. Data features come from the governance agent's feature catalog (e.g., 'mfa_score', 'carbon_score'). Record-level structural checks use reserved namespaces: 'record:list_membership', 'record:excluded', 'delivery:seller_authorization', 'delivery:click_url_presence'. Reserved prefixes: 'record:', 'delivery:'."
+          },
+          "status": {
+            "type": "string",
+            "enum": [
+              "passed",
+              "failed",
+              "warning",
+              "unevaluated"
+            ]
+          },
+          "policy_id": {
+            "type": "string",
+            "description": "Registry policy ID that triggered this result. Enables programmatic routing by looking up the policy in the registry."
+          },
+          "explanation": {
+            "type": "string",
+            "description": "Directional human-readable explanation of the result."
+          },
+          "requirement": {
+            "type": "object",
+            "description": "The feature requirement that was not met. MAY be present on failed features when the caller authored the requirement (e.g., feature_requirements on a property list). The buyer set these thresholds \u2014 echoing them back enables fix-and-retry loops without looking up the list definition.",
+            "properties": {
+              "min_value": {
+                "type": "number",
+                "description": "Minimum value that was required"
+              },
+              "max_value": {
+                "type": "number",
+                "description": "Maximum value that was allowed"
+              },
+              "allowed_values": {
+                "type": "array",
+                "description": "Values that would have been acceptable",
+                "items": {}
+              }
+            },
+            "additionalProperties": false
+          },
+          "confidence": {
+            "type": "number",
+            "minimum": 0,
+            "maximum": 1,
+            "description": "Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones."
+          }
+        },
+        "required": [
+          "feature_id",
+          "status"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "authorization": {
+      "$ref": "authorization-result.json",
+      "description": "Authorization validation result (only present if sales_agent_url was provided in the delivery record)"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "identifier",
+    "status",
+    "impressions"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/protocol/get-adcp-capabilities-request.json b/schemas/cache/protocol/get-adcp-capabilities-request.json
index 7715358c2..196b59916 100644
--- a/schemas/cache/protocol/get-adcp-capabilities-request.json
+++ b/schemas/cache/protocol/get-adcp-capabilities-request.json
@@ -1,30 +1,36 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get AdCP Capabilities Request",
   "description": "Request payload for get_adcp_capabilities task. Protocol-level capability discovery that works across all AdCP protocols.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. When provided, the seller validates this against its supported major_versions and returns VERSION_UNSUPPORTED if the version is not in range. When omitted, the seller assumes the highest major version it supports.",
+      "minimum": 1,
+      "maximum": 99
     },
     "protocols": {
+      "type": "array",
       "description": "Specific protocols to query capabilities for. If omitted, returns capabilities for all supported protocols.",
       "items": {
+        "type": "string",
         "enum": [
           "media_buy",
           "signals",
           "governance",
           "sponsored_intelligence",
           "creative"
-        ],
-        "type": "string"
+        ]
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get AdCP Capabilities Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/protocol/get-adcp-capabilities-response.json b/schemas/cache/protocol/get-adcp-capabilities-response.json
index 964f25772..fc6309d58 100644
--- a/schemas/cache/protocol/get-adcp-capabilities-response.json
+++ b/schemas/cache/protocol/get-adcp-capabilities-response.json
@@ -1,929 +1,972 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "Response payload for get_adcp_capabilities task. Protocol-level capability discovery across all AdCP protocols. Each domain protocol has its own capability section.",
+  "title": "Get AdCP Capabilities Response",
+  "description": "Response payload for get_adcp_capabilities task. Protocol-level capability discovery across all AdCP protocols. Each protocol has its own capability section.",
+  "type": "object",
   "properties": {
+    "adcp": {
+      "type": "object",
+      "description": "Core AdCP protocol information",
+      "properties": {
+        "major_versions": {
+          "type": "array",
+          "description": "AdCP major versions supported by this seller. Major versions indicate breaking changes. When multiple versions are listed, the buyer declares its version via the adcp_major_version field on requests.",
+          "items": {
+            "type": "integer",
+            "minimum": 1
+          },
+          "minItems": 1
+        },
+        "idempotency": {
+          "type": "object",
+          "description": "Idempotency semantics for mutating requests. Sellers MUST declare their replay window so buyers can reason about safe retry behavior. Clients MUST NOT assume a default \u2014 a seller without this declaration is non-compliant and should be treated as unsafe for retry-sensitive operations.",
+          "properties": {
+            "replay_ttl_seconds": {
+              "type": "integer",
+              "description": "How long the seller retains a canonical response for an idempotency_key. Within this window, a replay with the same key + equivalent canonical payload returns the cached response; a replay with a different canonical payload returns IDEMPOTENCY_CONFLICT; a replay past the window returns IDEMPOTENCY_EXPIRED when the seller can still distinguish 'seen and evicted' from 'never seen'. Minimum 3600 (1h); recommended 86400 (24h). Maximum 604800 (7 days) \u2014 longer windows force buyers to retain secret keys at rest for extended periods and grow the seller's cache table without bounded benefit.",
+              "minimum": 3600,
+              "maximum": 604800
+            }
+          },
+          "required": [
+            "replay_ttl_seconds"
+          ]
+        }
+      },
+      "required": [
+        "major_versions",
+        "idempotency"
+      ]
+    },
+    "supported_protocols": {
+      "type": "array",
+      "description": "AdCP protocols this agent supports. Each value both (a) declares which tools the agent implements and (b) commits the agent to pass the baseline compliance storyboard at /compliance/{version}/protocols/{protocol}/ (with snake_case \u2192 kebab-case path mapping, e.g. media_buy \u2192 /compliance/.../protocols/media-buy/). Compliance testing support is declared separately via the `compliance_testing` capability block (below), not as a protocol claim.",
+      "items": {
+        "type": "string",
+        "enum": [
+          "media_buy",
+          "signals",
+          "governance",
+          "sponsored_intelligence",
+          "creative",
+          "brand"
+        ]
+      },
+      "minItems": 1
+    },
     "account": {
+      "type": "object",
       "description": "Account management capabilities. Describes how accounts are established, what billing models are supported, and whether an account is required before browsing products.",
       "properties": {
-        "account_financials": {
-          "default": false,
-          "description": "Whether this seller supports the get_account_financials task for querying account-level financial status (spend, credit, invoices). Only applicable to operator-billed accounts.",
-          "type": "boolean"
-        },
-        "authorization_endpoint": {
-          "description": "OAuth authorization endpoint for obtaining operator-level credentials. Present when the seller supports OAuth for operator authentication. The agent directs the operator to this URL to authenticate and obtain a bearer token. If absent and require_operator_auth is true, operators obtain credentials out-of-band (e.g., seller portal, API key).",
-          "format": "uri",
-          "type": "string"
-        },
         "require_operator_auth": {
-          "default": false,
+          "type": "boolean",
           "description": "Whether the seller requires operator-level credentials. When true (explicit accounts), operators authenticate independently with the seller and the buyer discovers accounts via list_accounts. When false (default, implicit accounts), the seller trusts the agent's identity claims \u2014 the agent authenticates once and declares brands/operators via sync_accounts.",
-          "type": "boolean"
-        },
-        "required_for_products": {
-          "default": false,
-          "description": "Whether an account reference is required for get_products. When true, the buyer must establish an account before browsing products. When false (default), the buyer can browse products without an account \u2014 useful for price comparison and discovery before committing to a seller.",
-          "type": "boolean"
+          "default": false
         },
-        "sandbox": {
-          "default": false,
-          "description": "Whether this seller supports sandbox accounts for testing. Buyers can provision a sandbox account via sync_accounts with sandbox: true, and all requests using that account_id will be treated as sandbox \u2014 no real platform calls or spend.",
-          "type": "boolean"
+        "authorization_endpoint": {
+          "type": "string",
+          "format": "uri",
+          "description": "OAuth authorization endpoint for obtaining operator-level credentials. Present when the seller supports OAuth for operator authentication. The agent directs the operator to this URL to authenticate and obtain a bearer token. If absent and require_operator_auth is true, operators obtain credentials out-of-band (e.g., seller portal, API key)."
         },
         "supported_billing": {
+          "type": "array",
           "description": "Billing models this seller supports. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The buyer must pass one of these values in sync_accounts.",
           "items": {
+            "type": "string",
             "enum": [
               "operator",
               "agent",
               "advertiser"
-            ],
-            "type": "string"
+            ]
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "required_for_products": {
+          "type": "boolean",
+          "description": "Whether an account reference is required for get_products. When true, the buyer must establish an account before browsing products. When false (default), the buyer can browse products without an account \u2014 useful for price comparison and discovery before committing to a seller.",
+          "default": false
+        },
+        "account_financials": {
+          "type": "boolean",
+          "description": "Whether this seller supports the get_account_financials task for querying account-level financial status (spend, credit, invoices). Only applicable to operator-billed accounts.",
+          "default": false
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "Whether this seller supports sandbox accounts for testing. Buyers can provision a sandbox account via sync_accounts with sandbox: true, and all requests using that account_id will be treated as sandbox \u2014 no real platform calls or spend.",
+          "default": false
         }
       },
       "required": [
         "supported_billing"
-      ],
-      "type": "object"
+      ]
     },
-    "adcp": {
-      "description": "Core AdCP protocol information",
+    "media_buy": {
+      "type": "object",
+      "description": "Media-buy protocol capabilities. Expected when media_buy is in supported_protocols. Sellers declaring media_buy should also include account with supported_billing.",
       "properties": {
-        "major_versions": {
-          "description": "AdCP major versions supported by this seller. Major versions indicate breaking changes. When multiple versions are listed, the buyer declares its version during the capabilities handshake or via the adcp_version field on requests.",
+        "supported_pricing_models": {
+          "type": "array",
+          "description": "Pricing models this seller supports across its product portfolio. Buyers can use this for pre-flight filtering before querying individual products. Individual products may support a subset of these models.",
           "items": {
-            "minimum": 1,
-            "type": "integer"
+            "$ref": "../enums/pricing-model.json"
           },
           "minItems": 1,
-          "type": "array"
-        }
-      },
-      "required": [
-        "major_versions"
-      ],
-      "type": "object"
-    },
-    "brand": {
-      "additionalProperties": true,
-      "description": "Brand protocol capabilities. Only present if brand is in supported_protocols. Brand agents provide identity data (logos, colors, tone, assets) and optionally rights clearance for licensable content (talent, music, stock media).",
-      "properties": {
-        "available_uses": {
-          "description": "Rights uses available across this agent's roster",
-          "items": {
-            "$ref": "../enums/right-use.json"
-          },
-          "type": "array"
-        },
-        "description": {
-          "description": "Description of the agent's brand protocol capabilities",
-          "maxLength": 5000,
-          "type": "string"
-        },
-        "generation_providers": {
-          "description": "LLM/generation providers this agent can issue credentials for",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "identity": {
-          "default": true,
-          "description": "Supports get_brand_identity for retrieving brand identity data",
-          "type": "boolean"
-        },
-        "right_types": {
-          "description": "Types of rights available through this agent",
-          "items": {
-            "$ref": "../enums/right-type.json"
-          },
-          "type": "array"
-        },
-        "rights": {
-          "default": false,
-          "description": "Supports get_rights and acquire_rights for rights discovery and clearance",
-          "type": "boolean"
-        }
-      },
-      "type": "object"
-    },
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "creative": {
-      "additionalProperties": true,
-      "description": "Creative protocol capabilities. Only present if creative is in supported_protocols.",
-      "properties": {
-        "has_creative_library": {
-          "default": false,
-          "description": "When true, this agent hosts a creative library and supports list_creatives and creative_id references in build_creative. Creative agents with a library should also implement the accounts protocol (sync_accounts / list_accounts) so buyers can establish access.",
-          "type": "boolean"
-        },
-        "supports_compliance": {
-          "description": "When true, this creative agent can process briefs with compliance requirements (required_disclosures, prohibited_claims) and will validate that disclosures can be satisfied by the target format.",
-          "type": "boolean"
-        },
-        "supports_generation": {
-          "default": false,
-          "description": "When true, this agent can generate creatives from natural language briefs via build_creative. The buyer provides a message with creative direction, and the agent produces a manifest with generated assets. When false, build_creative only supports transformation or library retrieval.",
-          "type": "boolean"
+          "uniqueItems": true
         },
-        "supports_transformation": {
-          "default": false,
-          "description": "When true, this agent can transform or resize existing manifests via build_creative. The buyer provides a creative_manifest and a target_format_id, and the agent adapts the creative to the new format.",
-          "type": "boolean"
-        }
-      },
-      "type": "object"
-    },
-    "errors": {
-      "description": "Task-specific errors and warnings",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "extensions_supported": {
-      "description": "Extension namespaces this agent supports. Buyers can expect meaningful data in ext.{namespace} fields on responses from this agent. Extension schemas are published in the AdCP extension registry.",
-      "items": {
-        "description": "Extension namespace (lowercase alphanumeric with underscores, e.g., 'scope3', 'garm', 'iab_tcf')",
-        "pattern": "^[a-z][a-z0-9_]*$",
-        "type": "string"
-      },
-      "type": "array",
-      "uniqueItems": true
-    },
-    "governance": {
-      "description": "Governance protocol capabilities. Only present if governance is in supported_protocols. Governance agents provide property and creative data like compliance scores, brand safety ratings, sustainability metrics, and creative quality assessments.",
-      "properties": {
-        "creative_features": {
-          "description": "Creative features this governance agent can evaluate. Each feature describes a score, rating, or assessment the agent can provide for creatives (e.g., security scanning, creative quality, content categorization).",
+        "reporting_delivery_methods": {
+          "type": "array",
+          "description": "How this seller delivers reporting data to buyers. Polling via get_media_buy_delivery is always available as a baseline regardless of this field. This array declares additional push-based delivery methods the seller supports. 'webhook': seller pushes to buyer-provided URL (configured per buy via reporting_webhook). 'offline': seller pushes batch files to a cloud storage bucket (seller-provisioned per account via reporting_bucket on the account object). When absent, only polling is available.",
           "items": {
-            "properties": {
-              "categories": {
-                "description": "For categorical features, the valid values",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
-              },
-              "description": {
-                "description": "Human-readable description of what this feature measures",
-                "type": "string"
-              },
-              "feature_id": {
-                "description": "Unique identifier for this feature (e.g., 'auto_redirect', 'brand_consistency', 'iab_casinos_gambling')",
-                "type": "string"
-              },
-              "methodology_url": {
-                "description": "URL to documentation explaining how this feature is calculated or measured.",
-                "format": "uri",
-                "type": "string"
-              },
-              "range": {
-                "description": "For quantitative features, the valid range",
-                "properties": {
-                  "max": {
-                    "description": "Maximum value",
-                    "type": "number"
-                  },
-                  "min": {
-                    "description": "Minimum value",
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "min",
-                  "max"
-                ],
-                "type": "object"
-              },
-              "type": {
-                "description": "Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values",
-                "enum": [
-                  "binary",
-                  "quantitative",
-                  "categorical"
-                ],
-                "type": "string"
-              }
-            },
-            "required": [
-              "feature_id",
-              "type"
-            ],
-            "type": "object"
+            "type": "string",
+            "enum": [
+              "webhook",
+              "offline"
+            ]
           },
-          "type": "array"
+          "minItems": 1,
+          "uniqueItems": true
         },
-        "property_features": {
-          "description": "Property features this governance agent can evaluate. Each feature describes a score, rating, or certification the agent can provide for properties.",
+        "offline_delivery_protocols": {
+          "type": "array",
+          "description": "Cloud storage protocols this seller supports for offline file delivery. Only meaningful when reporting_delivery_methods includes 'offline'. Buyers express a protocol preference in sync_accounts; the seller provisions the account's reporting_bucket using a supported protocol.",
           "items": {
-            "properties": {
-              "categories": {
-                "description": "For categorical features, the valid values",
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
-              },
-              "description": {
-                "description": "Human-readable description of what this feature measures",
-                "type": "string"
-              },
-              "feature_id": {
-                "description": "Unique identifier for this feature (e.g., 'consent_quality', 'coppa_certified', 'carbon_score')",
-                "type": "string"
-              },
-              "methodology_url": {
-                "description": "URL to documentation explaining how this feature is calculated or measured. Helps buyers understand and compare methodologies across vendors.",
-                "format": "uri",
-                "type": "string"
-              },
-              "range": {
-                "description": "For quantitative features, the valid range",
-                "properties": {
-                  "max": {
-                    "description": "Maximum value",
-                    "type": "number"
-                  },
-                  "min": {
-                    "description": "Minimum value",
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "min",
-                  "max"
-                ],
-                "type": "object"
-              },
-              "type": {
-                "description": "Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values",
-                "enum": [
-                  "binary",
-                  "quantitative",
-                  "categorical"
-                ],
-                "type": "string"
-              }
-            },
-            "required": [
-              "feature_id",
-              "type"
-            ],
-            "type": "object"
-          },
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "last_updated": {
-      "description": "ISO 8601 timestamp of when capabilities were last updated. Buyers can use this for cache invalidation.",
-      "format": "date-time",
-      "type": "string"
-    },
-    "media_buy": {
-      "description": "Media-buy protocol capabilities. Only present if media_buy is in supported_protocols.",
-      "properties": {
-        "audience_targeting": {
-          "additionalProperties": true,
-          "description": "Audience targeting capabilities. Only present when features.audience_targeting is true.",
-          "properties": {
-            "matching_latency_hours": {
-              "additionalProperties": false,
-              "description": "Expected matching latency range in hours after upload. Use to calibrate polling cadence and set appropriate expectations before configuring push_notification_config.",
-              "properties": {
-                "max": {
-                  "minimum": 0,
-                  "type": "integer"
-                },
-                "min": {
-                  "minimum": 0,
-                  "type": "integer"
-                }
-              },
-              "type": "object"
-            },
-            "minimum_audience_size": {
-              "description": "Minimum matched audience size required for targeting. Audiences below this threshold will have status: too_small. Varies by platform (100\u20131000 is typical).",
-              "minimum": 1,
-              "type": "integer"
-            },
-            "supported_identifier_types": {
-              "description": "PII-derived identifier types accepted for audience matching. Buyers should only send identifiers the seller supports.",
-              "items": {
-                "enum": [
-                  "hashed_email",
-                  "hashed_phone"
-                ],
-                "type": "string"
-              },
-              "minItems": 1,
-              "type": "array"
-            },
-            "supported_uid_types": {
-              "description": "Universal ID types accepted for audience matching (MAIDs, RampID, UID2, etc.). MAID support varies significantly by platform \u2014 check this field before sending uids with type: maid.",
-              "items": {
-                "$ref": "../enums/uid-type.json"
-              },
-              "minItems": 1,
-              "type": "array"
-            },
-            "supports_platform_customer_id": {
-              "description": "Whether the seller accepts the buyer's CRM/loyalty ID as a matchable identifier. Only applicable when the seller operates a closed ecosystem with a shared ID namespace (e.g., a retailer matching against their loyalty program). When true, buyers can include platform_customer_id values in AudienceMember.identifiers for matching against the seller's identity graph. Reporting on matched platform_customer_ids typically requires a clean room or the seller's own reporting surface.",
-              "type": "boolean"
-            }
-          },
-          "required": [
-            "supported_identifier_types",
-            "minimum_audience_size"
-          ],
-          "type": "object"
-        },
-        "content_standards_detail": {
-          "description": "Content standards implementation details. Only meaningful when features.content_standards is true. Gives buyers pre-buy visibility into local evaluation and artifact delivery capabilities.",
-          "properties": {
-            "supported_channels": {
-              "description": "Channels for which the seller can provide content artifacts. Helps buyers understand which parts of a mixed-channel buy will have content standards coverage.",
-              "items": {
-                "$ref": "../enums/channels.json"
-              },
-              "minItems": 1,
-              "type": "array"
-            },
-            "supports_local_evaluation": {
-              "description": "Whether the seller runs a local evaluation model. When false, all artifacts will have local_verdict: 'unevaluated' and the failures_only filter on get_media_buy_artifacts is not useful.",
-              "type": "boolean"
-            },
-            "supports_webhook_delivery": {
-              "description": "Whether the seller supports push-based artifact delivery via artifact_webhook configured at buy creation time.",
-              "type": "boolean"
-            }
+            "$ref": "../enums/cloud-storage-protocol.json"
           },
-          "type": "object"
+          "minItems": 1,
+          "uniqueItems": true
         },
-        "conversion_tracking": {
-          "additionalProperties": true,
-          "description": "Seller-level conversion tracking capabilities. Only present when features.conversion_tracking is true.",
-          "properties": {
-            "attribution_windows": {
-              "description": "Attribution windows available from this seller. Single-element arrays indicate fixed windows; multi-element arrays indicate configurable options the buyer can choose from via attribution_window on optimization goals.",
-              "items": {
-                "additionalProperties": true,
-                "properties": {
-                  "event_type": {
-                    "$ref": "../enums/event-type.json",
-                    "description": "Event type this window applies to, or omit for default window"
-                  },
-                  "post_click": {
-                    "description": "Available post-click attribution windows (e.g. [{\"interval\": 7, \"unit\": \"days\"}])",
-                    "items": {
-                      "$ref": "../core/duration.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
-                  },
-                  "post_view": {
-                    "description": "Available post-view attribution windows (e.g. [{\"interval\": 1, \"unit\": \"days\"}])",
-                    "items": {
-                      "$ref": "../core/duration.json"
-                    },
-                    "minItems": 1,
-                    "type": "array"
-                  }
-                },
-                "required": [
-                  "post_click"
-                ],
-                "type": "object"
-              },
-              "type": "array"
-            },
-            "multi_source_event_dedup": {
-              "description": "Whether this seller can deduplicate conversion events across multiple event sources within a single goal. When true, the seller honors the deduplication semantics in optimization_goals event_sources arrays \u2014 the same event_id from multiple sources counts once. When false or absent, buyers should use a single event source per goal; multi-source arrays will be treated as first-source-wins. Most social platforms cannot deduplicate across independently-managed pixel and CAPI sources.",
-              "type": "boolean"
-            },
-            "supported_action_sources": {
-              "description": "Action sources this seller accepts events from",
-              "items": {
-                "$ref": "../enums/action-source.json"
-              },
-              "minItems": 1,
-              "type": "array"
-            },
-            "supported_event_types": {
-              "description": "Event types this seller can track and attribute. If omitted, all standard event types are supported.",
-              "items": {
-                "$ref": "../enums/event-type.json"
-              },
-              "minItems": 1,
-              "type": "array"
-            },
-            "supported_hashed_identifiers": {
-              "description": "Hashed PII types accepted for user matching. Buyers must hash before sending (SHA-256, normalized).",
-              "items": {
-                "enum": [
-                  "hashed_email",
-                  "hashed_phone"
-                ],
-                "type": "string"
-              },
-              "minItems": 1,
-              "type": "array"
-            },
-            "supported_uid_types": {
-              "description": "Universal ID types accepted for user matching",
-              "items": {
-                "$ref": "../enums/uid-type.json"
-              },
-              "minItems": 1,
-              "type": "array"
-            }
-          },
-          "type": "object"
+        "features": {
+          "$ref": "../core/media-buy-features.json"
         },
         "execution": {
+          "type": "object",
           "description": "Technical execution capabilities for media buying",
           "properties": {
+            "trusted_match": {
+              "type": "object",
+              "description": "Trusted Match Protocol (TMP) support. Presence of this object indicates the seller has TMP infrastructure deployed. Check individual products via get_products for per-product TMP capabilities.",
+              "properties": {
+                "surfaces": {
+                  "type": "array",
+                  "description": "Surface types this seller supports via TMP.",
+                  "items": {
+                    "type": "string",
+                    "enum": [
+                      "website",
+                      "mobile_app",
+                      "ctv_app",
+                      "desktop_app",
+                      "dooh",
+                      "podcast",
+                      "radio",
+                      "streaming_audio",
+                      "ai_assistant"
+                    ]
+                  }
+                }
+              }
+            },
             "axe_integrations": {
+              "type": "array",
               "description": "Deprecated. Legacy AXE integrations. Use trusted_match for new integrations.",
               "items": {
-                "format": "uri",
-                "type": "string"
-              },
-              "type": "array"
+                "type": "string",
+                "format": "uri"
+              }
             },
             "creative_specs": {
+              "type": "object",
               "description": "Creative specification support",
               "properties": {
-                "mraid_versions": {
-                  "description": "MRAID versions supported for rich media mobile creatives",
-                  "items": {
-                    "pattern": "^[0-9]+\\.[0-9]+$",
-                    "type": "string"
-                  },
-                  "type": "array"
-                },
-                "simid": {
-                  "description": "SIMID support for interactive video ads",
-                  "type": "boolean"
-                },
                 "vast_versions": {
+                  "type": "array",
                   "description": "VAST versions supported for video creatives",
                   "items": {
-                    "pattern": "^[0-9]+\\.[0-9]+$",
-                    "type": "string"
-                  },
-                  "type": "array"
+                    "type": "string",
+                    "pattern": "^[0-9]+\\.[0-9]+$"
+                  }
+                },
+                "mraid_versions": {
+                  "type": "array",
+                  "description": "MRAID versions supported for rich media mobile creatives",
+                  "items": {
+                    "type": "string",
+                    "pattern": "^[0-9]+\\.[0-9]+$"
+                  }
                 },
                 "vpaid": {
-                  "description": "VPAID support for interactive video ads",
-                  "type": "boolean"
+                  "type": "boolean",
+                  "description": "VPAID support for interactive video ads"
+                },
+                "simid": {
+                  "type": "boolean",
+                  "description": "SIMID support for interactive video ads"
                 }
-              },
-              "type": "object"
+              }
             },
             "targeting": {
+              "type": "object",
               "description": "Targeting capabilities. If declared true/supported, buyer can use these targeting parameters and seller MUST honor them.",
               "properties": {
-                "age_restriction": {
-                  "description": "Age restriction capabilities for compliance (alcohol, gambling)",
-                  "properties": {
-                    "supported": {
-                      "description": "Whether seller supports age restrictions",
-                      "type": "boolean"
-                    },
-                    "verification_methods": {
-                      "description": "Age verification methods this seller supports",
-                      "items": {
-                        "$ref": "../enums/age-verification-method.json"
-                      },
-                      "type": "array"
-                    }
-                  },
-                  "type": "object"
-                },
-                "audience_exclude": {
-                  "description": "Whether seller supports audience_exclude in targeting overlays (requires features.audience_targeting)",
-                  "type": "boolean"
-                },
-                "audience_include": {
-                  "description": "Whether seller supports audience_include in targeting overlays (requires features.audience_targeting)",
-                  "type": "boolean"
-                },
-                "device_platform": {
-                  "description": "Whether seller supports device platform targeting (Sec-CH-UA-Platform values)",
-                  "type": "boolean"
-                },
-                "device_type": {
-                  "description": "Whether seller supports device type targeting (form factor: desktop, mobile, tablet, ctv, dooh, unknown). When true, seller supports both device_type (include) and device_type_exclude (exclude) in targeting overlays.",
-                  "type": "boolean"
-                },
                 "geo_countries": {
-                  "description": "Supports country-level geo targeting using ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE')",
-                  "type": "boolean"
+                  "type": "boolean",
+                  "description": "Country-level targeting using ISO 3166-1 alpha-2 codes"
+                },
+                "geo_regions": {
+                  "type": "boolean",
+                  "description": "Region/state-level targeting using ISO 3166-2 codes (e.g., US-NY, GB-SCT)"
                 },
                 "geo_metros": {
-                  "description": "Metro area targeting support. Specifies which classification systems are supported.",
+                  "type": "object",
+                  "description": "Metro area targeting. Properties indicate which classification systems are supported.",
                   "properties": {
-                    "eurostat_nuts2": {
-                      "description": "Supports Eurostat NUTS Level 2 regions (EU)",
-                      "type": "boolean"
-                    },
                     "nielsen_dma": {
-                      "description": "Supports Nielsen DMA codes (US market, e.g., '501' for NYC)",
                       "type": "boolean"
                     },
                     "uk_itl1": {
-                      "description": "Supports UK ITL Level 1 regions",
                       "type": "boolean"
                     },
                     "uk_itl2": {
-                      "description": "Supports UK ITL Level 2 regions",
+                      "type": "boolean"
+                    },
+                    "eurostat_nuts2": {
                       "type": "boolean"
                     }
                   },
-                  "type": "object"
+                  "additionalProperties": false
                 },
                 "geo_postal_areas": {
-                  "description": "Postal area targeting support. Specifies which postal code systems are supported. System names encode country and precision.",
+                  "type": "object",
+                  "description": "Postal area targeting. Properties indicate which postal code systems are supported.",
                   "properties": {
-                    "at_plz": {
-                      "description": "Austrian Postleitzahl, 4 digits (e.g., '1010')",
+                    "us_zip": {
                       "type": "boolean"
                     },
-                    "au_postcode": {
-                      "description": "Australian postcode, 4 digits (e.g., '2000')",
+                    "us_zip_plus_four": {
                       "type": "boolean"
                     },
-                    "ca_fsa": {
-                      "description": "Canadian Forward Sortation Area (e.g., 'K1A')",
+                    "gb_outward": {
                       "type": "boolean"
                     },
-                    "ca_full": {
-                      "description": "Canadian full postal code (e.g., 'K1A 0B1')",
+                    "gb_full": {
                       "type": "boolean"
                     },
-                    "ch_plz": {
-                      "description": "Swiss Postleitzahl, 4 digits (e.g., '8000')",
+                    "ca_fsa": {
                       "type": "boolean"
                     },
-                    "de_plz": {
-                      "description": "German Postleitzahl, 5 digits (e.g., '10115')",
+                    "ca_full": {
                       "type": "boolean"
                     },
-                    "fr_code_postal": {
-                      "description": "French code postal, 5 digits (e.g., '75001')",
+                    "de_plz": {
                       "type": "boolean"
                     },
-                    "gb_full": {
-                      "description": "UK full postcode (e.g., 'SW1A 1AA')",
+                    "fr_code_postal": {
                       "type": "boolean"
                     },
-                    "gb_outward": {
-                      "description": "UK postcode district / outward code (e.g., 'SW1', 'EC1')",
+                    "au_postcode": {
                       "type": "boolean"
                     },
-                    "us_zip": {
-                      "description": "US 5-digit ZIP codes (e.g., '10001')",
+                    "ch_plz": {
                       "type": "boolean"
                     },
-                    "us_zip_plus_four": {
-                      "description": "US 9-digit ZIP+4 codes (e.g., '10001-1234')",
+                    "at_plz": {
                       "type": "boolean"
                     }
                   },
-                  "type": "object"
+                  "additionalProperties": false
                 },
-                "geo_proximity": {
-                  "description": "Proximity targeting capabilities from arbitrary coordinates via targeting_overlay.geo_proximity.",
+                "age_restriction": {
+                  "type": "object",
+                  "description": "Age restriction capabilities for compliance (alcohol, gambling)",
                   "properties": {
-                    "geometry": {
-                      "description": "Whether seller supports pre-computed GeoJSON geometry (buyer provides the polygon)",
-                      "type": "boolean"
-                    },
-                    "radius": {
-                      "description": "Whether seller supports simple radius targeting (distance circle from a point)",
-                      "type": "boolean"
+                    "supported": {
+                      "type": "boolean",
+                      "description": "Whether seller supports age restrictions"
                     },
-                    "transport_modes": {
-                      "description": "Transport modes supported for travel_time isochrones. Only relevant when travel_time is true.",
+                    "verification_methods": {
+                      "type": "array",
+                      "description": "Age verification methods this seller supports",
                       "items": {
-                        "$ref": "../enums/transport-mode.json"
-                      },
-                      "minItems": 1,
-                      "type": "array"
-                    },
-                    "travel_time": {
-                      "description": "Whether seller supports travel time isochrone targeting (requires a routing engine)",
-                      "type": "boolean"
+                        "$ref": "../enums/age-verification-method.json"
+                      }
                     }
-                  },
-                  "type": "object"
+                  }
                 },
-                "geo_regions": {
-                  "description": "Supports region/state-level geo targeting using ISO 3166-2 subdivision codes (e.g., 'US-NY', 'GB-SCT', 'DE-BY')",
-                  "type": "boolean"
+                "language": {
+                  "type": "boolean",
+                  "description": "Whether seller supports language targeting (ISO 639-1 codes)"
                 },
                 "keyword_targets": {
+                  "type": "object",
                   "description": "Keyword targeting capabilities. Presence indicates support for targeting_overlay.keyword_targets and keyword_targets_add/remove in update_media_buy.",
                   "properties": {
                     "supported_match_types": {
+                      "type": "array",
                       "description": "Match types this seller supports for keyword targets. Sellers must reject goals with unsupported match types.",
                       "items": {
+                        "type": "string",
                         "enum": [
                           "broad",
                           "phrase",
                           "exact"
-                        ],
-                        "type": "string"
+                        ]
                       },
-                      "minItems": 1,
-                      "type": "array"
+                      "minItems": 1
                     }
                   },
                   "required": [
                     "supported_match_types"
-                  ],
-                  "type": "object"
-                },
-                "language": {
-                  "description": "Whether seller supports language targeting (ISO 639-1 codes)",
-                  "type": "boolean"
+                  ]
                 },
                 "negative_keywords": {
+                  "type": "object",
                   "description": "Negative keyword capabilities. Presence indicates support for targeting_overlay.negative_keywords and negative_keywords_add/remove in update_media_buy.",
                   "properties": {
                     "supported_match_types": {
+                      "type": "array",
                       "description": "Match types this seller supports for negative keywords. Sellers must reject goals with unsupported match types.",
                       "items": {
+                        "type": "string",
                         "enum": [
                           "broad",
                           "phrase",
                           "exact"
-                        ],
-                        "type": "string"
+                        ]
                       },
-                      "minItems": 1,
-                      "type": "array"
+                      "minItems": 1
                     }
                   },
                   "required": [
                     "supported_match_types"
-                  ],
-                  "type": "object"
+                  ]
+                },
+                "geo_proximity": {
+                  "type": "object",
+                  "description": "Proximity targeting capabilities from arbitrary coordinates via targeting_overlay.geo_proximity.",
+                  "properties": {
+                    "radius": {
+                      "type": "boolean",
+                      "description": "Whether seller supports simple radius targeting (distance circle from a point)"
+                    },
+                    "travel_time": {
+                      "type": "boolean",
+                      "description": "Whether seller supports travel time isochrone targeting (requires a routing engine)"
+                    },
+                    "geometry": {
+                      "type": "boolean",
+                      "description": "Whether seller supports pre-computed GeoJSON geometry (buyer provides the polygon)"
+                    },
+                    "transport_modes": {
+                      "type": "array",
+                      "description": "Transport modes supported for travel_time isochrones. Only relevant when travel_time is true.",
+                      "items": {
+                        "$ref": "../enums/transport-mode.json"
+                      },
+                      "minItems": 1
+                    }
+                  }
                 }
+              }
+            }
+          }
+        },
+        "audience_targeting": {
+          "type": "object",
+          "description": "Audience targeting capabilities. Presence of this object indicates the seller supports audience targeting, including sync_audiences and audience_include/audience_exclude in targeting overlays.",
+          "properties": {
+            "supported_identifier_types": {
+              "type": "array",
+              "description": "PII-derived identifier types accepted for audience matching. Buyers should only send identifiers the seller supports.",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "hashed_email",
+                  "hashed_phone"
+                ]
               },
-              "type": "object"
+              "minItems": 1
             },
-            "trusted_match": {
-              "description": "Trusted Match Protocol (TMP) support. When present, this seller supports real-time contextual and/or identity matching. Check individual products via get_products for per-product TMP capabilities.",
+            "supports_platform_customer_id": {
+              "type": "boolean",
+              "description": "Whether the seller accepts the buyer's CRM/loyalty ID as a matchable identifier. Only applicable when the seller operates a closed ecosystem with a shared ID namespace (e.g., a retailer matching against their loyalty program). When true, buyers can include platform_customer_id values in AudienceMember.identifiers for matching against the seller's identity graph. Reporting on matched platform_customer_ids typically requires a clean room or the seller's own reporting surface."
+            },
+            "supported_uid_types": {
+              "type": "array",
+              "description": "Universal ID types accepted for audience matching (MAIDs, RampID, UID2, etc.). MAID support varies significantly by platform \u2014 check this field before sending uids with type: maid.",
+              "items": {
+                "$ref": "../enums/uid-type.json"
+              },
+              "minItems": 1
+            },
+            "minimum_audience_size": {
+              "type": "integer",
+              "description": "Minimum matched audience size required for targeting. Audiences below this threshold will have status: too_small. Varies by platform (100\u20131000 is typical).",
+              "minimum": 1
+            },
+            "matching_latency_hours": {
+              "type": "object",
+              "description": "Expected matching latency range in hours after upload. Use to calibrate polling cadence and set appropriate expectations before configuring push_notification_config.",
               "properties": {
-                "supported": {
-                  "default": false,
-                  "description": "Whether this seller has TMP infrastructure deployed.",
-                  "type": "boolean"
+                "min": {
+                  "type": "integer",
+                  "minimum": 0
                 },
-                "surfaces": {
-                  "description": "Surface types this seller supports via TMP.",
-                  "items": {
-                    "enum": [
-                      "website",
-                      "mobile_app",
-                      "ctv_app",
-                      "desktop_app",
-                      "dooh",
-                      "podcast",
-                      "radio",
-                      "streaming_audio",
-                      "ai_assistant"
-                    ],
-                    "type": "string"
-                  },
-                  "type": "array"
+                "max": {
+                  "type": "integer",
+                  "minimum": 0
                 }
               },
-              "type": "object"
+              "additionalProperties": false
             }
           },
-          "type": "object"
-        },
-        "features": {
-          "$ref": "../core/media-buy-features.json"
+          "required": [
+            "supported_identifier_types",
+            "minimum_audience_size"
+          ],
+          "additionalProperties": true
         },
-        "portfolio": {
-          "description": "Information about the seller's media inventory portfolio",
+        "conversion_tracking": {
+          "type": "object",
+          "description": "Seller-level conversion tracking capabilities. Presence of this object indicates the seller supports sync_event_sources and log_event for conversion event tracking.",
           "properties": {
-            "advertising_policies": {
-              "description": "Advertising content policies, restrictions, and guidelines",
-              "maxLength": 10000,
-              "type": "string"
+            "multi_source_event_dedup": {
+              "type": "boolean",
+              "description": "Whether this seller can deduplicate conversion events across multiple event sources within a single goal. When true, the seller honors the deduplication semantics in optimization_goals event_sources arrays \u2014 the same event_id from multiple sources counts once. When false or absent, buyers should use a single event source per goal; multi-source arrays will be treated as first-source-wins. Most social platforms cannot deduplicate across independently-managed pixel and CAPI sources."
             },
-            "description": {
-              "description": "Markdown-formatted description of the inventory portfolio",
-              "maxLength": 5000,
-              "type": "string"
+            "supported_event_types": {
+              "type": "array",
+              "description": "Event types this seller can track and attribute. If omitted, all standard event types are supported.",
+              "items": {
+                "$ref": "../enums/event-type.json"
+              },
+              "minItems": 1
             },
-            "primary_channels": {
-              "description": "Primary advertising channels in this portfolio",
+            "supported_uid_types": {
+              "type": "array",
+              "description": "Universal ID types accepted for user matching",
               "items": {
-                "$ref": "../enums/channels.json"
+                "$ref": "../enums/uid-type.json"
               },
-              "type": "array"
+              "minItems": 1
             },
-            "primary_countries": {
-              "description": "Primary countries (ISO 3166-1 alpha-2) where inventory is concentrated",
+            "supported_hashed_identifiers": {
+              "type": "array",
+              "description": "Hashed PII types accepted for user matching. Buyers must hash before sending (SHA-256, normalized).",
               "items": {
-                "pattern": "^[A-Z]{2}$",
-                "type": "string"
+                "type": "string",
+                "enum": [
+                  "hashed_email",
+                  "hashed_phone"
+                ]
               },
-              "type": "array"
+              "minItems": 1
             },
-            "publisher_domains": {
-              "description": "Publisher domains this seller is authorized to represent. Buyers should fetch each publisher's adagents.json for property definitions.",
+            "supported_action_sources": {
+              "type": "array",
+              "description": "Action sources this seller accepts events from",
               "items": {
-                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-                "type": "string"
+                "$ref": "../enums/action-source.json"
               },
-              "minItems": 1,
-              "type": "array"
+              "minItems": 1
+            },
+            "attribution_windows": {
+              "type": "array",
+              "description": "Attribution windows available from this seller. Single-element arrays indicate fixed windows; multi-element arrays indicate configurable options the buyer can choose from via attribution_window on optimization goals.",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "event_type": {
+                    "$ref": "../enums/event-type.json",
+                    "description": "Event type this window applies to, or omit for default window"
+                  },
+                  "post_click": {
+                    "type": "array",
+                    "description": "Available post-click attribution windows (e.g. [{\"interval\": 7, \"unit\": \"days\"}])",
+                    "items": {
+                      "$ref": "../core/duration.json"
+                    },
+                    "minItems": 1
+                  },
+                  "post_view": {
+                    "type": "array",
+                    "description": "Available post-view attribution windows (e.g. [{\"interval\": 1, \"unit\": \"days\"}])",
+                    "items": {
+                      "$ref": "../core/duration.json"
+                    },
+                    "minItems": 1
+                  }
+                },
+                "required": [
+                  "post_click"
+                ],
+                "additionalProperties": true
+              }
             }
           },
-          "required": [
-            "publisher_domains"
-          ],
-          "type": "object"
+          "additionalProperties": true
         },
-        "reporting": {
-          "description": "Seller-level reporting capabilities. Summarizes what reporting features are available across the seller's product portfolio. Individual products may vary \u2014 check product-level reporting_capabilities for specifics.",
+        "content_standards": {
+          "type": "object",
+          "description": "Content standards implementation details. Presence of this object indicates the seller supports content_standards configuration including sampling rates and category filtering. Gives buyers pre-buy visibility into local evaluation and artifact delivery capabilities.",
           "properties": {
-            "available_dimensions": {
-              "description": "Reporting dimensions available across the seller's portfolio. Individual products may support a subset. Dimensions geo, device_type, device_platform, audience, and placement are opt-in via reporting_dimensions on the delivery request. Dimensions creative, keyword, and catalog_item are included automatically when the seller supports them (not controlled by reporting_dimensions).",
+            "supports_local_evaluation": {
+              "type": "boolean",
+              "description": "Whether the seller runs a local evaluation model. When false, all artifacts will have local_verdict: 'unevaluated' and the failures_only filter on get_media_buy_artifacts is not useful."
+            },
+            "supported_channels": {
+              "type": "array",
+              "description": "Channels for which the seller can provide content artifacts. Helps buyers understand which parts of a mixed-channel buy will have content standards coverage.",
               "items": {
-                "enum": [
-                  "geo",
-                  "device_type",
-                  "device_platform",
-                  "audience",
-                  "placement",
-                  "creative",
-                  "keyword",
-                  "catalog_item"
-                ],
-                "type": "string"
+                "$ref": "../enums/channels.json"
               },
+              "minItems": 1
+            },
+            "supports_webhook_delivery": {
+              "type": "boolean",
+              "description": "Whether the seller supports push-based artifact delivery via artifact_webhook configured at buy creation time."
+            }
+          }
+        },
+        "portfolio": {
+          "type": "object",
+          "description": "Information about the seller's media inventory portfolio. Expected for media_buy sellers \u2014 buyers use this to understand inventory coverage and verify authorization via adagents.json.",
+          "properties": {
+            "publisher_domains": {
+              "type": "array",
+              "description": "Publisher domains this seller is authorized to represent. Buyers should fetch each publisher's adagents.json for property definitions.",
+              "items": {
+                "type": "string",
+                "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+              },
+              "minItems": 1
+            },
+            "primary_channels": {
               "type": "array",
-              "uniqueItems": true
+              "description": "Primary advertising channels in this portfolio",
+              "items": {
+                "$ref": "../enums/channels.json"
+              }
             },
-            "supports_daily_breakdown": {
-              "description": "Whether delivery reporting includes daily_breakdown at the media buy and/or package level.",
-              "type": "boolean"
+            "primary_countries": {
+              "type": "array",
+              "description": "Primary countries (ISO 3166-1 alpha-2) where inventory is concentrated",
+              "items": {
+                "type": "string",
+                "pattern": "^[A-Z]{2}$"
+              }
             },
-            "supports_date_range": {
-              "description": "Whether any products support date range filtering (date_range_support: 'date_range'). When false, all products return lifetime-only data.",
-              "type": "boolean"
+            "description": {
+              "type": "string",
+              "description": "Markdown-formatted description of the inventory portfolio",
+              "maxLength": 5000
             },
-            "supports_webhooks": {
-              "description": "Whether any products support webhook-based reporting notifications.",
-              "type": "boolean"
+            "advertising_policies": {
+              "type": "string",
+              "description": "Advertising content policies, restrictions, and guidelines",
+              "maxLength": 10000
             }
           },
-          "type": "object"
-        },
-        "supported_pricing_models": {
-          "description": "Pricing models this seller supports across its product portfolio. Buyers can use this for pre-flight filtering before querying individual products. Individual products may support a subset of these models.",
-          "items": {
-            "$ref": "../enums/pricing-model.json"
-          },
-          "minItems": 1,
-          "type": "array",
-          "uniqueItems": true
+          "required": [
+            "publisher_domains"
+          ]
         }
-      },
-      "type": "object"
+      }
     },
     "signals": {
+      "type": "object",
       "description": "Signals protocol capabilities. Only present if signals is in supported_protocols.",
       "properties": {
         "data_provider_domains": {
+          "type": "array",
           "description": "Data provider domains this signals agent is authorized to resell. Buyers should fetch each data provider's adagents.json for signal catalog definitions and to verify authorization.",
           "items": {
-            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$",
-            "type": "string"
+            "type": "string",
+            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
         "features": {
-          "additionalProperties": {
-            "type": "boolean"
-          },
+          "type": "object",
           "description": "Optional signals features supported",
           "properties": {
             "catalog_signals": {
-              "description": "Supports signals from data provider catalogs with structured signal_id references",
-              "type": "boolean"
+              "type": "boolean",
+              "description": "Supports signals from data provider catalogs with structured signal_id references"
             }
           },
-          "type": "object"
+          "additionalProperties": {
+            "type": "boolean"
+          }
         }
-      },
-      "type": "object"
+      }
+    },
+    "governance": {
+      "type": "object",
+      "description": "Governance protocol capabilities. Only present if governance is in supported_protocols. Governance agents provide property and creative data like compliance scores, brand safety ratings, sustainability metrics, and creative quality assessments.",
+      "properties": {
+        "property_features": {
+          "type": "array",
+          "description": "Property features this governance agent can evaluate. Each feature describes a score, rating, or certification the agent can provide for properties.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "Unique identifier for this feature (e.g., 'consent_quality', 'coppa_certified', 'carbon_score')"
+              },
+              "type": {
+                "type": "string",
+                "enum": [
+                  "binary",
+                  "quantitative",
+                  "categorical"
+                ],
+                "description": "Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+              },
+              "range": {
+                "type": "object",
+                "description": "For quantitative features, the valid range",
+                "properties": {
+                  "min": {
+                    "type": "number",
+                    "description": "Minimum value"
+                  },
+                  "max": {
+                    "type": "number",
+                    "description": "Maximum value"
+                  }
+                },
+                "required": [
+                  "min",
+                  "max"
+                ]
+              },
+              "categories": {
+                "type": "array",
+                "description": "For categorical features, the valid values",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "description": {
+                "type": "string",
+                "description": "Human-readable description of what this feature measures"
+              },
+              "methodology_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to documentation explaining how this feature is calculated or measured. Helps buyers understand and compare methodologies across vendors."
+              }
+            },
+            "required": [
+              "feature_id",
+              "type"
+            ]
+          }
+        },
+        "creative_features": {
+          "type": "array",
+          "description": "Creative features this governance agent can evaluate. Each feature describes a score, rating, or assessment the agent can provide for creatives (e.g., security scanning, creative quality, content categorization).",
+          "items": {
+            "type": "object",
+            "properties": {
+              "feature_id": {
+                "type": "string",
+                "description": "Unique identifier for this feature (e.g., 'auto_redirect', 'brand_consistency', 'iab_casinos_gambling')"
+              },
+              "type": {
+                "type": "string",
+                "enum": [
+                  "binary",
+                  "quantitative",
+                  "categorical"
+                ],
+                "description": "Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+              },
+              "range": {
+                "type": "object",
+                "description": "For quantitative features, the valid range",
+                "properties": {
+                  "min": {
+                    "type": "number",
+                    "description": "Minimum value"
+                  },
+                  "max": {
+                    "type": "number",
+                    "description": "Maximum value"
+                  }
+                },
+                "required": [
+                  "min",
+                  "max"
+                ]
+              },
+              "categories": {
+                "type": "array",
+                "description": "For categorical features, the valid values",
+                "items": {
+                  "type": "string"
+                }
+              },
+              "description": {
+                "type": "string",
+                "description": "Human-readable description of what this feature measures"
+              },
+              "methodology_url": {
+                "type": "string",
+                "format": "uri",
+                "description": "URL to documentation explaining how this feature is calculated or measured."
+              }
+            },
+            "required": [
+              "feature_id",
+              "type"
+            ]
+          }
+        }
+      }
     },
     "sponsored_intelligence": {
+      "type": "object",
       "description": "Sponsored Intelligence protocol capabilities. Only present if sponsored_intelligence is in supported_protocols. SI agents handle conversational brand experiences.",
       "properties": {
-        "brand_url": {
-          "description": "URL to brand.json with colors, fonts, logos, tone",
-          "format": "uri",
-          "type": "string"
-        },
-        "capabilities": {
-          "$ref": "../sponsored-intelligence/si-capabilities.json",
-          "description": "Modalities, components, and commerce capabilities"
-        },
         "endpoint": {
+          "type": "object",
           "description": "SI agent endpoint configuration",
           "properties": {
-            "preferred": {
-              "description": "Preferred transport when host supports multiple",
-              "enum": [
-                "mcp",
-                "a2a"
-              ],
-              "type": "string"
-            },
             "transports": {
+              "type": "array",
               "description": "Available protocol transports. Hosts select based on their capabilities.",
               "items": {
-                "additionalProperties": true,
+                "type": "object",
                 "properties": {
                   "type": {
-                    "description": "Protocol transport type",
+                    "type": "string",
                     "enum": [
                       "mcp",
                       "a2a"
                     ],
-                    "type": "string"
+                    "description": "Protocol transport type"
                   },
                   "url": {
-                    "description": "Agent endpoint URL for this transport",
+                    "type": "string",
                     "format": "uri",
-                    "type": "string"
+                    "description": "Agent endpoint URL for this transport"
                   }
                 },
                 "required": [
                   "type",
                   "url"
                 ],
-                "type": "object"
+                "additionalProperties": true
               },
-              "minItems": 1,
-              "type": "array"
+              "minItems": 1
+            },
+            "preferred": {
+              "type": "string",
+              "enum": [
+                "mcp",
+                "a2a"
+              ],
+              "description": "Preferred transport when host supports multiple"
             }
           },
           "required": [
             "transports"
-          ],
-          "type": "object"
+          ]
+        },
+        "capabilities": {
+          "$ref": "../sponsored-intelligence/si-capabilities.json",
+          "description": "Modalities, components, and commerce capabilities"
+        },
+        "brand_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "URL to brand.json with colors, fonts, logos, tone"
         }
       },
       "required": [
         "endpoint",
         "capabilities"
+      ]
+    },
+    "brand": {
+      "type": "object",
+      "description": "Brand protocol capabilities. Only present if brand is in supported_protocols. Brand agents provide identity data (logos, colors, tone, assets) and optionally rights clearance for licensable content (talent, music, stock media).",
+      "properties": {
+        "rights": {
+          "type": "boolean",
+          "description": "Supports get_rights and acquire_rights for rights discovery and clearance",
+          "default": false
+        },
+        "right_types": {
+          "type": "array",
+          "description": "Types of rights available through this agent",
+          "items": {
+            "$ref": "../enums/right-type.json"
+          }
+        },
+        "available_uses": {
+          "type": "array",
+          "description": "Rights uses available across this agent's roster",
+          "items": {
+            "$ref": "../enums/right-use.json"
+          }
+        },
+        "generation_providers": {
+          "type": "array",
+          "description": "LLM/generation providers this agent can issue credentials for",
+          "items": {
+            "type": "string"
+          }
+        },
+        "description": {
+          "type": "string",
+          "description": "Description of the agent's brand protocol capabilities",
+          "maxLength": 5000
+        }
+      },
+      "additionalProperties": true
+    },
+    "creative": {
+      "type": "object",
+      "description": "Creative protocol capabilities. Only present if creative is in supported_protocols.",
+      "properties": {
+        "supports_compliance": {
+          "type": "boolean",
+          "description": "When true, this creative agent can process briefs with compliance requirements (required_disclosures, prohibited_claims) and will validate that disclosures can be satisfied by the target format."
+        },
+        "has_creative_library": {
+          "type": "boolean",
+          "description": "When true, this agent hosts a creative library and supports list_creatives and creative_id references in build_creative. Creative agents with a library should also implement the accounts protocol (sync_accounts / list_accounts) so buyers can establish access.",
+          "default": false
+        },
+        "supports_generation": {
+          "type": "boolean",
+          "description": "When true, this agent can generate creatives from natural language briefs via build_creative. The buyer provides a message with creative direction, and the agent produces a manifest with generated assets. When false, build_creative only supports transformation or library retrieval.",
+          "default": false
+        },
+        "supports_transformation": {
+          "type": "boolean",
+          "description": "When true, this agent can transform or resize existing manifests via build_creative. The buyer provides a creative_manifest and a target_format_id, and the agent adapts the creative to the new format.",
+          "default": false
+        }
+      },
+      "additionalProperties": true
+    },
+    "request_signing": {
+      "type": "object",
+      "description": "RFC 9421 HTTP Signatures support for incoming requests. Optional in 3.0 \u2014 capability-advertised so counterparties can opt into signing selectively. Required for spend-committing operations in 4.0 (the next breaking-changes accumulation window). The full profile is defined in docs/building/implementation/security.mdx (Signed Requests (Transport Layer)).",
+      "properties": {
+        "supported": {
+          "type": "boolean",
+          "description": "Whether this agent verifies RFC 9421 signatures on incoming requests. When true, signatures present on requests are validated per the AdCP request-signing profile. When false or absent, signatures are ignored (requests are bearer-authenticated only)."
+        },
+        "covers_content_digest": {
+          "type": "string",
+          "enum": [
+            "required",
+            "forbidden",
+            "either"
+          ],
+          "description": "Policy for content-digest coverage in request signatures. 'required': signers MUST cover content-digest (body is bound to the signature); body-unbound signatures rejected with request_signature_components_incomplete. 'forbidden': signers MUST NOT cover content-digest; body-bound signatures rejected with request_signature_components_unexpected. This is an opt-out for the narrow case of legacy infrastructure that cannot preserve body bytes. 'either' (default): signer chooses per-request; verifier accepts both covered and uncovered forms. 'required' is recommended for spend-committing operations in production; 4.0 recommends 'required' for those operations.",
+          "default": "either"
+        },
+        "required_for": {
+          "type": "array",
+          "description": "AdCP protocol operation names (e.g., 'create_media_buy') for which this agent rejects unsigned requests with request_signature_required. Not MCP tool names, A2A skill names, or any transport-specific rename \u2014 verifiers MUST NOT accept operation names that are not defined by the AdCP protocol spec. Empty in 3.0 by default; sellers populate selectively during per-counterparty pilots. In 4.0 this list MUST include all spend-committing operations the agent supports (create_media_buy, acquire_*, etc.). Counterparties MUST sign any listed operation.",
+          "items": {
+            "type": "string"
+          },
+          "default": []
+        },
+        "warn_for": {
+          "type": "array",
+          "description": "AdCP protocol operation names for which this agent verifies signatures when present and logs failures but does NOT reject the request. Used as a shadow-mode bridge between supported_for and required_for: the verifier surfaces failure rates in monitoring before flipping an operation to required. Precedence: required_for > warn_for > supported_for. An operation in required_for ignores warn_for. Counterparties SHOULD sign operations in warn_for; verifiers MUST NOT reject if the signature is missing or invalid.",
+          "items": {
+            "type": "string"
+          },
+          "default": []
+        },
+        "supported_for": {
+          "type": "array",
+          "description": "AdCP protocol operation names for which this agent verifies signatures when present but does not require them. Counterparties SHOULD sign operations in this list. Typically a superset of required_for and warn_for.",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "required": [
+        "supported"
+      ]
+    },
+    "compliance_testing": {
+      "type": "object",
+      "description": "Compliance testing capabilities. The presence of this block declares that the agent supports deterministic testing via comply_test_controller for lifecycle state machine validation. Omit the block entirely if the agent does not support compliance testing.",
+      "properties": {
+        "scenarios": {
+          "type": "array",
+          "description": "Compliance testing scenarios this agent supports. Must be non-empty \u2014 at least one scenario. Callers can also use comply_test_controller with scenario: 'list_scenarios' to discover supported scenarios at runtime.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "force_creative_status",
+              "force_account_status",
+              "force_media_buy_status",
+              "force_session_status",
+              "simulate_delivery",
+              "simulate_budget_spend"
+            ]
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "scenarios"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "supported_protocols": {
-      "description": "Which AdCP domain protocols this seller supports",
+    "specialisms": {
+      "type": "array",
+      "description": "Optional \u2014 specialized compliance claims this agent supports. Omitting the field means the agent declares no specialism claims (it still passes the universal + domain-baseline storyboards implied by supported_protocols). Each specialism maps to a storyboard bundle at /compliance/{version}/specialisms/{id}/ that the AAO compliance runner executes to verify the claim. Each specialism rolls up to one of the protocols in supported_protocols \u2014 the runner rejects a specialism claim whose parent protocol is missing. Only list specialisms your agent actually implements \u2014 the AAO Verified badge enumerates which specialisms were demonstrably passed.",
       "items": {
-        "enum": [
-          "media_buy",
-          "signals",
-          "governance",
-          "sponsored_intelligence",
-          "creative",
-          "brand"
-        ],
-        "type": "string"
+        "$ref": "../enums/specialism.json"
+      },
+      "uniqueItems": true
+    },
+    "extensions_supported": {
+      "type": "array",
+      "description": "Extension namespaces this agent supports. Buyers can expect meaningful data in ext.{namespace} fields on responses from this agent. Extension schemas are published in the AdCP extension registry.",
+      "items": {
+        "type": "string",
+        "pattern": "^[a-z][a-z0-9_]*$",
+        "description": "Extension namespace (lowercase alphanumeric with underscores, e.g., 'iab_tcf', 'iab_gpp')"
       },
-      "minItems": 1,
-      "type": "array"
+      "uniqueItems": true
+    },
+    "last_updated": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp of when capabilities were last updated. Buyers can use this for cache invalidation."
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings",
+      "items": {
+        "$ref": "../core/error.json"
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "adcp",
     "supported_protocols"
   ],
-  "title": "Get AdCP Capabilities Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/signals/activate-signal-request.json b/schemas/cache/signals/activate-signal-request.json
index 50be3033e..d20cf2c1e 100644
--- a/schemas/cache/signals/activate-signal-request.json
+++ b/schemas/cache/signals/activate-signal-request.json
@@ -1,54 +1,62 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Activate Signal Request",
   "description": "Request parameters for activating or deactivating a signal on deployment targets",
+  "type": "object",
   "properties": {
-    "account": {
-      "$ref": "../core/account-ref.json",
-      "description": "Account for this activation. Associates with a commercial relationship established via sync_accounts."
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
     "action": {
-      "default": "activate",
-      "description": "Whether to activate or deactivate the signal. Deactivating removes the segment from downstream platforms, required when campaigns end to comply with data governance policies (GDPR, CCPA). Defaults to 'activate' when omitted.",
+      "type": "string",
       "enum": [
         "activate",
         "deactivate"
       ],
-      "type": "string"
+      "default": "activate",
+      "description": "Whether to activate or deactivate the signal. Deactivating removes the segment from downstream platforms, required when campaigns end to comply with data governance policies (GDPR, CCPA). Defaults to 'activate' when omitted."
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "signal_agent_segment_id": {
+      "type": "string",
+      "description": "The universal identifier for the signal to activate"
     },
     "destinations": {
+      "type": "array",
       "description": "Target destination(s) for activation. If the authenticated caller matches one of these destinations, activation keys will be included in the response.",
       "items": {
         "$ref": "../core/destination.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "pricing_option_id": {
+      "type": "string",
+      "description": "The pricing option selected from the signal's pricing_options in the get_signals response. Required when the signal has pricing options. Records the buyer's pricing commitment at activation time; pass this same value in report_usage for billing verification."
+    },
+    "account": {
+      "$ref": "../core/account-ref.json",
+      "description": "Account for this activation. Associates with a commercial relationship established via sync_accounts."
     },
     "idempotency_key": {
+      "type": "string",
       "description": "Client-generated unique key for this request. Prevents duplicate activations on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
       "minLength": 16,
-      "type": "string"
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
     },
-    "pricing_option_id": {
-      "description": "The pricing option selected from the signal's pricing_options in the get_signals response. Required when the signal has pricing options. Records the buyer's pricing commitment at activation time; pass this same value in report_usage for billing verification.",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "signal_agent_segment_id": {
-      "description": "The universal identifier for the signal to activate",
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "signal_agent_segment_id",
     "destinations"
   ],
-  "title": "Activate Signal Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/signals/activate-signal-response.json b/schemas/cache/signals/activate-signal-response.json
index f31b04736..02e16420e 100644
--- a/schemas/cache/signals/activate-signal-response.json
+++ b/schemas/cache/signals/activate-signal-response.json
@@ -1,68 +1,57 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Activate Signal Response",
   "description": "Response payload for activate_signal task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - the signal is either fully activated or not activated at all.",
+  "type": "object",
   "oneOf": [
     {
-      "additionalProperties": true,
+      "title": "ActivateSignalSuccess",
       "description": "Success response - signal activated successfully to one or more deployment targets",
-      "not": {
-        "required": [
-          "errors"
-        ]
-      },
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "deployments": {
+          "type": "array",
           "description": "Array of deployment results for each deployment target",
           "items": {
             "$ref": "../core/deployment.json"
-          },
-          "type": "array"
+          }
+        },
+        "sandbox": {
+          "type": "boolean",
+          "description": "When true, this response contains simulated data from sandbox mode."
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
-        },
-        "sandbox": {
-          "description": "When true, this response contains simulated data from sandbox mode.",
-          "type": "boolean"
         }
       },
       "required": [
         "deployments"
       ],
-      "title": "ActivateSignalSuccess",
-      "type": "object"
-    },
-    {
       "additionalProperties": true,
-      "description": "Error response - operation failed, signal not activated",
       "not": {
-        "anyOf": [
-          {
-            "required": [
-              "deployments"
-            ]
-          },
-          {
-            "required": [
-              "sandbox"
-            ]
-          }
+        "required": [
+          "errors"
         ]
-      },
+      }
+    },
+    {
+      "title": "ActivateSignalError",
+      "description": "Error response - operation failed, signal not activated",
+      "type": "object",
       "properties": {
-        "context": {
-          "$ref": "../core/context.json"
-        },
         "errors": {
+          "type": "array",
           "description": "Array of errors explaining why activation failed (e.g., platform connectivity issues, signal definition problems, authentication failures)",
           "items": {
             "$ref": "../core/error.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "context": {
+          "$ref": "../core/context.json"
         },
         "ext": {
           "$ref": "../core/ext.json"
@@ -71,10 +60,21 @@
       "required": [
         "errors"
       ],
-      "title": "ActivateSignalError",
-      "type": "object"
+      "additionalProperties": true,
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "deployments"
+            ]
+          },
+          {
+            "required": [
+              "sandbox"
+            ]
+          }
+        ]
+      }
     }
-  ],
-  "title": "Activate Signal Response",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/signals/get-signals-request.json b/schemas/cache/signals/get-signals-request.json
index ff90cc542..753f6fe48 100644
--- a/schemas/cache/signals/get-signals-request.json
+++ b/schemas/cache/signals/get-signals-request.json
@@ -1,71 +1,77 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "anyOf": [
-    {
-      "required": [
-        "signal_spec"
-      ]
-    },
-    {
-      "required": [
-        "signal_ids"
-      ]
-    }
-  ],
+  "title": "Get Signals Request",
   "description": "Request parameters for discovering and refining signals. Use signal_spec for natural language discovery, signal_ids for exact lookups, or both to refine previous results (signal_ids anchor the starting set, signal_spec guides adjustments).",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "account": {
       "$ref": "../core/account-ref.json",
       "description": "Account for this request. When provided, the signals agent returns per-account pricing options if configured."
     },
-    "context": {
-      "$ref": "../core/context.json"
+    "signal_spec": {
+      "type": "string",
+      "description": "Natural language description of the desired signals. When used alone, enables semantic discovery. When combined with signal_ids, provides context for the agent but signal_ids matches are returned first."
     },
-    "countries": {
-      "description": "Countries where signals will be used (ISO 3166-1 alpha-2 codes). When omitted, no geographic filter is applied.",
+    "signal_ids": {
+      "type": "array",
+      "description": "Specific signals to look up by data provider and ID. Returns exact matches from the data provider's catalog. When combined with signal_spec, these signals anchor the starting set and signal_spec guides adjustments.",
       "items": {
-        "pattern": "^[A-Z]{2}$",
-        "type": "string"
+        "$ref": "../core/signal-id.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
     "destinations": {
+      "type": "array",
       "description": "Filter signals to those activatable on specific agents/platforms. When omitted, returns all signals available on the current agent. If the authenticated caller matches one of these destinations, activation keys will be included in the response.",
       "items": {
         "$ref": "../core/destination.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "countries": {
+      "type": "array",
+      "description": "Countries where signals will be used (ISO 3166-1 alpha-2 codes). When omitted, no geographic filter is applied.",
+      "items": {
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
+      },
+      "minItems": 1
     },
     "filters": {
       "$ref": "../core/signal-filters.json"
     },
     "max_results": {
+      "type": "integer",
       "description": "Maximum number of results to return",
-      "minimum": 1,
-      "type": "integer"
+      "minimum": 1
     },
     "pagination": {
       "$ref": "../core/pagination-request.json"
     },
-    "signal_ids": {
-      "description": "Specific signals to look up by data provider and ID. Returns exact matches from the data provider's catalog. When combined with signal_spec, these signals anchor the starting set and signal_spec guides adjustments.",
-      "items": {
-        "$ref": "../core/signal-id.json"
-      },
-      "minItems": 1,
-      "type": "array"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "signal_spec": {
-      "description": "Natural language description of the desired signals. When used alone, enables semantic discovery. When combined with signal_ids, provides context for the agent but signal_ids matches are returned first.",
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Signals Request",
-  "type": "object"
+  "anyOf": [
+    {
+      "required": [
+        "signal_spec"
+      ]
+    },
+    {
+      "required": [
+        "signal_ids"
+      ]
+    }
+  ],
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/signals/get-signals-response.json b/schemas/cache/signals/get-signals-response.json
index 72b0e0efd..11047ce66 100644
--- a/schemas/cache/signals/get-signals-response.json
+++ b/schemas/cache/signals/get-signals-response.json
@@ -1,110 +1,93 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Signals Response",
   "description": "Response payload for get_signals task",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "../core/context.json"
-    },
-    "errors": {
-      "description": "Task-specific errors and warnings (e.g., signal discovery or pricing issues)",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "pagination": {
-      "$ref": "../core/pagination-response.json"
-    },
-    "sandbox": {
-      "description": "When true, this response contains simulated data from sandbox mode.",
-      "type": "boolean"
-    },
     "signals": {
+      "type": "array",
       "description": "Array of matching signals",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "categories": {
-            "description": "Valid values for categorical signals. Present when value_type is 'categorical'. Buyers must use one of these values in SignalTargeting.values.",
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          "coverage_percentage": {
-            "description": "Percentage of audience coverage",
-            "maximum": 100,
-            "minimum": 0,
-            "type": "number"
+          "signal_id": {
+            "$ref": "../core/signal-id.json",
+            "description": "Universal signal identifier referencing the data provider's catalog. Use this to verify authorization and look up signal definitions."
           },
-          "data_provider": {
-            "description": "Human-readable name of the data provider",
-            "type": "string"
+          "signal_agent_segment_id": {
+            "type": "string",
+            "description": "Opaque identifier used for activation. This is the signals agent's internal segment ID."
           },
-          "deployments": {
-            "description": "Array of deployment targets",
-            "items": {
-              "$ref": "../core/deployment.json"
-            },
-            "type": "array"
+          "name": {
+            "type": "string",
+            "description": "Human-readable signal name"
           },
           "description": {
-            "description": "Detailed signal description",
-            "type": "string"
+            "type": "string",
+            "description": "Detailed signal description"
           },
-          "name": {
-            "description": "Human-readable signal name",
-            "type": "string"
+          "value_type": {
+            "$ref": "../enums/signal-value-type.json",
+            "description": "The data type of this signal's values (binary, categorical, numeric)"
           },
-          "pricing_options": {
-            "description": "Pricing options available for this signal. The buyer selects one and passes its pricing_option_id in report_usage for billing verification.",
+          "categories": {
+            "type": "array",
+            "description": "Valid values for categorical signals. Present when value_type is 'categorical'. Buyers must use one of these values in SignalTargeting.values.",
             "items": {
-              "$ref": "../core/signal-pricing-option.json"
-            },
-            "minItems": 1,
-            "type": "array"
+              "type": "string"
+            }
           },
           "range": {
-            "additionalProperties": false,
+            "type": "object",
             "description": "Valid range for numeric signals. Present when value_type is 'numeric'.",
             "properties": {
-              "max": {
-                "description": "Maximum value (inclusive)",
-                "type": "number"
-              },
               "min": {
-                "description": "Minimum value (inclusive)",
-                "type": "number"
+                "type": "number",
+                "description": "Minimum value (inclusive)"
+              },
+              "max": {
+                "type": "number",
+                "description": "Maximum value (inclusive)"
               }
             },
             "required": [
               "min",
               "max"
             ],
-            "type": "object"
-          },
-          "signal_agent_segment_id": {
-            "description": "Opaque identifier used for activation. This is the signals agent's internal segment ID.",
-            "type": "string"
-          },
-          "signal_id": {
-            "$ref": "../core/signal-id.json",
-            "description": "Universal signal identifier referencing the data provider's catalog. Use this to verify authorization and look up signal definitions."
+            "additionalProperties": false
           },
           "signal_type": {
             "$ref": "../enums/signal-catalog-type.json",
             "description": "Catalog type of signal (marketplace, custom, owned)"
           },
-          "value_type": {
-            "$ref": "../enums/signal-value-type.json",
-            "description": "The data type of this signal's values (binary, categorical, numeric)"
+          "data_provider": {
+            "type": "string",
+            "description": "Human-readable name of the data provider"
+          },
+          "coverage_percentage": {
+            "type": "number",
+            "description": "Percentage of audience coverage",
+            "minimum": 0,
+            "maximum": 100
+          },
+          "deployments": {
+            "type": "array",
+            "description": "Array of deployment targets",
+            "items": {
+              "$ref": "../core/deployment.json"
+            }
+          },
+          "pricing_options": {
+            "type": "array",
+            "description": "Pricing options available for this signal. The buyer selects one and passes its pricing_option_id in report_usage for billing verification.",
+            "items": {
+              "$ref": "../core/vendor-pricing-option.json"
+            },
+            "minItems": 1
           }
         },
         "required": [
+          "signal_id",
           "signal_agent_segment_id",
           "name",
           "description",
@@ -114,14 +97,32 @@
           "deployments",
           "pricing_options"
         ],
-        "type": "object"
-      },
-      "type": "array"
+        "additionalProperties": true
+      }
+    },
+    "errors": {
+      "type": "array",
+      "description": "Task-specific errors and warnings (e.g., signal discovery or pricing issues)",
+      "items": {
+        "$ref": "../core/error.json"
+      }
+    },
+    "pagination": {
+      "$ref": "../core/pagination-response.json"
+    },
+    "sandbox": {
+      "type": "boolean",
+      "description": "When true, this response contains simulated data from sandbox mode."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "signals"
   ],
-  "title": "Get Signals Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-capabilities.json b/schemas/cache/sponsored-intelligence/si-capabilities.json
index b989a2601..8a384e201 100644
--- a/schemas/cache/sponsored-intelligence/si-capabilities.json
+++ b/schemas/cache/sponsored-intelligence/si-capabilities.json
@@ -1,152 +1,152 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Capabilities",
   "description": "Capabilities that a brand agent declares or a host supports",
+  "type": "object",
   "properties": {
-    "a2ui": {
-      "additionalProperties": true,
-      "description": "A2UI (Agent-to-UI) capabilities",
-      "properties": {
-        "catalogs": {
-          "description": "Supported A2UI component catalogs (e.g., 'si-standard', 'standard')",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "supported": {
-          "default": false,
-          "description": "Supports A2UI surface rendering",
-          "type": "boolean"
-        }
-      },
-      "type": "object"
-    },
-    "commerce": {
-      "additionalProperties": true,
-      "description": "Commerce capabilities",
-      "properties": {
-        "acp_checkout": {
-          "description": "Supports ACP (Agentic Commerce Protocol) checkout handoff",
-          "type": "boolean"
-        }
-      },
-      "type": "object"
-    },
-    "components": {
-      "additionalProperties": true,
-      "description": "Visual components supported",
-      "properties": {
-        "extensions": {
-          "additionalProperties": true,
-          "description": "Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)",
-          "type": "object"
-        },
-        "standard": {
-          "description": "Standard components that all SI hosts must render",
-          "items": {
-            "enum": [
-              "text",
-              "link",
-              "image",
-              "product_card",
-              "carousel",
-              "action_button"
-            ],
-            "type": "string"
-          },
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "mcp_apps": {
-      "default": false,
-      "description": "Supports MCP Apps for rendering A2UI surfaces in iframes",
-      "type": "boolean"
-    },
     "modalities": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Interaction modalities supported",
       "properties": {
-        "avatar": {
-          "description": "Animated video presence with brand avatar",
+        "conversational": {
+          "type": "boolean",
+          "description": "Pure text exchange - the baseline modality",
+          "default": true
+        },
+        "voice": {
           "oneOf": [
             {
               "type": "boolean"
             },
             {
-              "additionalProperties": true,
+              "type": "object",
               "properties": {
-                "avatar_id": {
-                  "description": "Brand avatar identifier",
-                  "type": "string"
-                },
                 "provider": {
-                  "description": "Avatar provider (d-id, heygen, synthesia, etc.)",
-                  "type": "string"
+                  "type": "string",
+                  "description": "TTS provider (elevenlabs, openai, etc.)"
+                },
+                "voice_id": {
+                  "type": "string",
+                  "description": "Brand voice identifier"
                 }
               },
-              "type": "object"
+              "additionalProperties": true
             }
-          ]
-        },
-        "conversational": {
-          "default": true,
-          "description": "Pure text exchange - the baseline modality",
-          "type": "boolean"
+          ],
+          "description": "Audio-based interaction using brand voice"
         },
         "video": {
-          "description": "Brand video content playback",
           "oneOf": [
             {
               "type": "boolean"
             },
             {
-              "additionalProperties": true,
+              "type": "object",
               "properties": {
                 "formats": {
-                  "description": "Supported video formats (mp4, webm, etc.)",
+                  "type": "array",
                   "items": {
                     "type": "string"
                   },
-                  "type": "array"
+                  "description": "Supported video formats (mp4, webm, etc.)"
                 },
                 "max_duration_seconds": {
-                  "description": "Maximum video duration",
-                  "type": "integer"
+                  "type": "integer",
+                  "description": "Maximum video duration"
                 }
               },
-              "type": "object"
+              "additionalProperties": true
             }
-          ]
+          ],
+          "description": "Brand video content playback"
         },
-        "voice": {
-          "description": "Audio-based interaction using brand voice",
+        "avatar": {
           "oneOf": [
             {
               "type": "boolean"
             },
             {
-              "additionalProperties": true,
+              "type": "object",
               "properties": {
                 "provider": {
-                  "description": "TTS provider (elevenlabs, openai, etc.)",
-                  "type": "string"
+                  "type": "string",
+                  "description": "Avatar provider (d-id, heygen, synthesia, etc.)"
                 },
-                "voice_id": {
-                  "description": "Brand voice identifier",
-                  "type": "string"
+                "avatar_id": {
+                  "type": "string",
+                  "description": "Brand avatar identifier"
                 }
               },
-              "type": "object"
+              "additionalProperties": true
             }
-          ]
+          ],
+          "description": "Animated video presence with brand avatar"
         }
       },
-      "type": "object"
+      "additionalProperties": true
+    },
+    "components": {
+      "type": "object",
+      "description": "Visual components supported",
+      "properties": {
+        "standard": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "enum": [
+              "text",
+              "link",
+              "image",
+              "product_card",
+              "carousel",
+              "action_button"
+            ]
+          },
+          "description": "Standard components that all SI hosts must render"
+        },
+        "extensions": {
+          "type": "object",
+          "description": "Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)",
+          "additionalProperties": true
+        }
+      },
+      "additionalProperties": true
+    },
+    "commerce": {
+      "type": "object",
+      "description": "Commerce capabilities",
+      "properties": {
+        "acp_checkout": {
+          "type": "boolean",
+          "description": "Supports ACP (Agentic Commerce Protocol) checkout handoff"
+        }
+      },
+      "additionalProperties": true
+    },
+    "a2ui": {
+      "type": "object",
+      "description": "A2UI (Agent-to-UI) capabilities",
+      "properties": {
+        "supported": {
+          "type": "boolean",
+          "description": "Supports A2UI surface rendering",
+          "default": false
+        },
+        "catalogs": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"
+        }
+      },
+      "additionalProperties": true
+    },
+    "mcp_apps": {
+      "type": "boolean",
+      "description": "Supports MCP Apps for rendering A2UI surfaces in iframes",
+      "default": false
     }
   },
-  "title": "SI Capabilities",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-get-offering-request.json b/schemas/cache/sponsored-intelligence/si-get-offering-request.json
index 04fe541e2..a3a78d791 100644
--- a/schemas/cache/sponsored-intelligence/si-get-offering-request.json
+++ b/schemas/cache/sponsored-intelligence/si-get-offering-request.json
@@ -1,35 +1,41 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Get Offering Request",
   "description": "Get offering details and availability before session handoff. Returns offering information, availability status, and optionally matching products based on context.",
+  "type": "object",
   "properties": {
-    "context": {
-      "description": "Optional natural language context about user intent for personalized results (e.g., 'mens size 14 near Cincinnati'). Must be anonymous - no PII.",
-      "type": "string"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "offering_id": {
+      "type": "string",
+      "description": "Offering identifier from the catalog to get details for"
+    },
+    "context": {
+      "type": "string",
+      "description": "Optional natural language context about user intent for personalized results (e.g., 'mens size 14 near Cincinnati'). Must be anonymous - no PII."
     },
     "include_products": {
+      "type": "boolean",
       "default": false,
-      "description": "Whether to include matching products in the response",
-      "type": "boolean"
-    },
-    "offering_id": {
-      "description": "Offering identifier from the catalog to get details for",
-      "type": "string"
+      "description": "Whether to include matching products in the response"
     },
     "product_limit": {
-      "default": 5,
-      "description": "Maximum number of matching products to return",
-      "maximum": 50,
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "maximum": 50,
+      "default": 5,
+      "description": "Maximum number of matching products to return"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "offering_id"
   ],
-  "title": "SI Get Offering Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-get-offering-response.json b/schemas/cache/sponsored-intelligence/si-get-offering-response.json
index 6b6fa4ffa..40f8d21d2 100644
--- a/schemas/cache/sponsored-intelligence/si-get-offering-response.json
+++ b/schemas/cache/sponsored-intelligence/si-get-offering-response.json
@@ -1,142 +1,145 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Get Offering Response",
   "description": "Offering details, availability status, and optionally matching products. Use the offering_token in si_initiate_session for correlation.",
+  "type": "object",
   "properties": {
-    "alternative_offering_ids": {
-      "description": "Alternative offerings to consider if this one is unavailable",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
     "available": {
-      "description": "Whether the offering is currently available",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Whether the offering is currently available"
+    },
+    "offering_token": {
+      "type": "string",
+      "description": "Token to pass to si_initiate_session for session continuity. Brand stores the full query context server-side (products shown, order, context) so they can resolve references like 'the second one' when the session starts."
+    },
+    "ttl_seconds": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "How long this offering information is valid (seconds). Host should re-fetch after TTL expires."
     },
     "checked_at": {
-      "description": "When this offering information was retrieved",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When this offering information was retrieved"
     },
-    "errors": {
-      "description": "Errors during offering lookup",
-      "items": {
-        "$ref": "../core/error.json"
+    "offering": {
+      "type": "object",
+      "description": "Offering details",
+      "properties": {
+        "offering_id": {
+          "type": "string",
+          "description": "Offering identifier"
+        },
+        "title": {
+          "type": "string",
+          "description": "Offering title"
+        },
+        "summary": {
+          "type": "string",
+          "description": "Brief summary of the offering"
+        },
+        "tagline": {
+          "type": "string",
+          "description": "Short promotional tagline"
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When this offering expires"
+        },
+        "price_hint": {
+          "type": "string",
+          "description": "Price indication (e.g., 'from $199', '50% off')"
+        },
+        "image_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Hero image for the offering"
+        },
+        "landing_url": {
+          "type": "string",
+          "format": "uri",
+          "description": "Landing page URL"
+        }
       },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      "additionalProperties": true
     },
     "matching_products": {
+      "type": "array",
       "description": "Products matching the request context. Only included if include_products was true.",
       "items": {
-        "additionalProperties": true,
+        "type": "object",
         "properties": {
-          "availability_summary": {
-            "description": "Brief availability info (e.g., 'In stock', 'Size 14 available', '3 left')",
-            "type": "string"
-          },
-          "image_url": {
-            "description": "Product image",
-            "format": "uri",
-            "type": "string"
+          "product_id": {
+            "type": "string",
+            "description": "Product identifier"
           },
           "name": {
-            "description": "Product name",
-            "type": "string"
+            "type": "string",
+            "description": "Product name"
+          },
+          "price": {
+            "type": "string",
+            "description": "Display price (e.g., '$129', '$89.99')"
           },
           "original_price": {
-            "description": "Original price if on sale",
-            "type": "string"
+            "type": "string",
+            "description": "Original price if on sale"
           },
-          "price": {
-            "description": "Display price (e.g., '$129', '$89.99')",
-            "type": "string"
+          "image_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Product image"
           },
-          "product_id": {
-            "description": "Product identifier",
-            "type": "string"
+          "availability_summary": {
+            "type": "string",
+            "description": "Brief availability info (e.g., 'In stock', 'Size 14 available', '3 left')"
           },
           "url": {
-            "description": "Product detail page URL",
+            "type": "string",
             "format": "uri",
-            "type": "string"
+            "description": "Product detail page URL"
           }
         },
         "required": [
           "product_id",
           "name"
         ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "offering": {
-      "additionalProperties": true,
-      "description": "Offering details",
-      "properties": {
-        "expires_at": {
-          "description": "When this offering expires",
-          "format": "date-time",
-          "type": "string"
-        },
-        "image_url": {
-          "description": "Hero image for the offering",
-          "format": "uri",
-          "type": "string"
-        },
-        "landing_url": {
-          "description": "Landing page URL",
-          "format": "uri",
-          "type": "string"
-        },
-        "offering_id": {
-          "description": "Offering identifier",
-          "type": "string"
-        },
-        "price_hint": {
-          "description": "Price indication (e.g., 'from $199', '50% off')",
-          "type": "string"
-        },
-        "summary": {
-          "description": "Brief summary of the offering",
-          "type": "string"
-        },
-        "tagline": {
-          "description": "Short promotional tagline",
-          "type": "string"
-        },
-        "title": {
-          "description": "Offering title",
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "offering_token": {
-      "description": "Token to pass to si_initiate_session for session continuity. Brand stores the full query context server-side (products shown, order, context) so they can resolve references like 'the second one' when the session starts.",
-      "type": "string"
+        "additionalProperties": true
+      }
     },
     "total_matching": {
-      "description": "Total number of products matching the context (may be more than returned in matching_products)",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
-    },
-    "ttl_seconds": {
-      "description": "How long this offering information is valid (seconds). Host should re-fetch after TTL expires.",
-      "minimum": 0,
-      "type": "integer"
+      "description": "Total number of products matching the context (may be more than returned in matching_products)"
     },
     "unavailable_reason": {
-      "description": "If not available, why (e.g., 'expired', 'sold_out', 'region_restricted')",
-      "type": "string"
+      "type": "string",
+      "description": "If not available, why (e.g., 'expired', 'sold_out', 'region_restricted')"
+    },
+    "alternative_offering_ids": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Alternative offerings to consider if this one is unavailable"
+    },
+    "errors": {
+      "type": "array",
+      "items": {
+        "$ref": "../core/error.json"
+      },
+      "description": "Errors during offering lookup"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "available"
   ],
-  "title": "SI Get Offering Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-identity.json b/schemas/cache/sponsored-intelligence/si-identity.json
index fdd55bd90..ed0e04e40 100644
--- a/schemas/cache/sponsored-intelligence/si-identity.json
+++ b/schemas/cache/sponsored-intelligence/si-identity.json
@@ -1,101 +1,101 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Identity",
   "description": "User identity shared with brand agent (with explicit consent)",
+  "type": "object",
   "properties": {
-    "anonymous_session_id": {
-      "description": "Session ID for anonymous users (when consent_granted is false)",
-      "type": "string"
-    },
     "consent_granted": {
-      "description": "Whether user consented to share identity",
-      "type": "boolean"
+      "type": "boolean",
+      "description": "Whether user consented to share identity"
+    },
+    "consent_timestamp": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When consent was granted (ISO 8601)"
     },
     "consent_scope": {
-      "description": "What data was consented to share",
+      "type": "array",
       "items": {
+        "type": "string",
         "enum": [
           "name",
           "email",
           "shipping_address",
           "phone",
           "locale"
-        ],
-        "type": "string"
+        ]
       },
-      "type": "array"
-    },
-    "consent_timestamp": {
-      "description": "When consent was granted (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
+      "description": "What data was consented to share"
     },
     "privacy_policy_acknowledged": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Brand privacy policy acknowledgment",
       "properties": {
         "brand_policy_url": {
-          "description": "URL to brand's privacy policy",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "URL to brand's privacy policy"
         },
         "brand_policy_version": {
-          "description": "Version of policy acknowledged",
-          "type": "string"
+          "type": "string",
+          "description": "Version of policy acknowledged"
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
     "user": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "User data (only present if consent_granted is true)",
       "properties": {
         "email": {
-          "description": "User's email address",
+          "type": "string",
           "format": "email",
-          "type": "string"
-        },
-        "locale": {
-          "description": "User's locale (e.g., en-US)",
-          "type": "string"
+          "description": "User's email address"
         },
         "name": {
-          "description": "User's display name",
-          "type": "string"
+          "type": "string",
+          "description": "User's display name"
+        },
+        "locale": {
+          "type": "string",
+          "description": "User's locale (e.g., en-US)"
         },
         "phone": {
-          "description": "User's phone number",
-          "type": "string"
+          "type": "string",
+          "description": "User's phone number"
         },
         "shipping_address": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "User's shipping address for accurate pricing",
           "properties": {
-            "city": {
+            "street": {
               "type": "string"
             },
-            "country": {
+            "city": {
               "type": "string"
             },
-            "postal_code": {
+            "state": {
               "type": "string"
             },
-            "state": {
+            "postal_code": {
               "type": "string"
             },
-            "street": {
+            "country": {
               "type": "string"
             }
           },
-          "type": "object"
+          "additionalProperties": true
         }
       },
-      "type": "object"
+      "additionalProperties": true
+    },
+    "anonymous_session_id": {
+      "type": "string",
+      "description": "Session ID for anonymous users (when consent_granted is false)"
     }
   },
   "required": [
     "consent_granted"
   ],
-  "title": "SI Identity",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-initiate-session-request.json b/schemas/cache/sponsored-intelligence/si-initiate-session-request.json
index b9fe73499..85c592e03 100644
--- a/schemas/cache/sponsored-intelligence/si-initiate-session-request.json
+++ b/schemas/cache/sponsored-intelligence/si-initiate-session-request.json
@@ -1,49 +1,57 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Initiate Session Request",
   "description": "Host initiates a session with a brand agent",
+  "type": "object",
   "properties": {
-    "context": {
-      "description": "Conversation handoff from the host describing what the user needs",
-      "type": "string"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
     },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "idempotency_key": {
-      "description": "Client-generated unique key for this request. Prevents duplicate session creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
-      "maxLength": 255,
-      "minLength": 16,
-      "type": "string"
+    "context": {
+      "type": "string",
+      "description": "Conversation handoff from the host describing what the user needs"
     },
     "identity": {
       "$ref": "si-identity.json"
     },
     "media_buy_id": {
-      "description": "AdCP media buy ID if session was triggered by advertising",
-      "type": "string"
-    },
-    "offering_id": {
-      "description": "Brand-specific offering identifier to apply",
-      "type": "string"
-    },
-    "offering_token": {
-      "description": "Token from si_get_offering response for session continuity. Brand uses this to recall what products were shown to the user, enabling natural references like 'the second one' or 'that blue shoe'.",
-      "type": "string"
+      "type": "string",
+      "description": "AdCP media buy ID if session was triggered by advertising"
     },
     "placement": {
-      "description": "Where this session was triggered (e.g., 'chatgpt_search', 'claude_chat')",
-      "type": "string"
+      "type": "string",
+      "description": "Where this session was triggered (e.g., 'chatgpt_search', 'claude_chat')"
+    },
+    "offering_id": {
+      "type": "string",
+      "description": "Brand-specific offering identifier to apply"
     },
     "supported_capabilities": {
       "$ref": "si-capabilities.json",
       "description": "What capabilities the host supports"
+    },
+    "offering_token": {
+      "type": "string",
+      "description": "Token from si_get_offering response for session continuity. Brand uses this to recall what products were shown to the user, enabling natural references like 'the second one' or 'that blue shoe'."
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate session creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
+    "idempotency_key",
     "context",
     "identity"
   ],
-  "title": "SI Initiate Session Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-initiate-session-response.json b/schemas/cache/sponsored-intelligence/si-initiate-session-response.json
index cb594f66e..fd05d1f91 100644
--- a/schemas/cache/sponsored-intelligence/si-initiate-session-response.json
+++ b/schemas/cache/sponsored-intelligence/si-initiate-session-response.json
@@ -1,58 +1,61 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Initiate Session Response",
   "description": "Brand agent's response to session initiation",
+  "type": "object",
   "properties": {
-    "errors": {
-      "description": "Errors during session initiation",
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
-    },
-    "negotiated_capabilities": {
-      "$ref": "si-capabilities.json",
-      "description": "Intersection of brand and host capabilities for this session"
+    "session_id": {
+      "type": "string",
+      "description": "Unique session identifier for subsequent messages"
     },
     "response": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Brand agent's initial response",
       "properties": {
         "message": {
-          "description": "Conversational message from brand agent",
-          "type": "string"
+          "type": "string",
+          "description": "Conversational message from brand agent"
         },
         "ui_elements": {
-          "description": "Visual components to render",
+          "type": "array",
           "items": {
             "$ref": "si-ui-element.json"
           },
-          "type": "array"
+          "description": "Visual components to render"
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "session_id": {
-      "description": "Unique session identifier for subsequent messages",
-      "type": "string"
+    "negotiated_capabilities": {
+      "$ref": "si-capabilities.json",
+      "description": "Intersection of brand and host capabilities for this session"
     },
     "session_status": {
       "$ref": "../enums/si-session-status.json",
       "description": "Current session lifecycle state. Returned in initiation, message, and termination responses."
     },
     "session_ttl_seconds": {
-      "description": "Session inactivity timeout in seconds. After this duration without a message, the brand agent may terminate the session. Hosts SHOULD warn users before timeout when possible.",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Session inactivity timeout in seconds. After this duration without a message, the brand agent may terminate the session. Hosts SHOULD warn users before timeout when possible."
+    },
+    "errors": {
+      "type": "array",
+      "items": {
+        "$ref": "../core/error.json"
+      },
+      "description": "Errors during session initiation"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "session_id",
     "session_status"
   ],
-  "title": "SI Initiate Session Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-send-message-request.json b/schemas/cache/sponsored-intelligence/si-send-message-request.json
index 29a656021..5c50d82ff 100644
--- a/schemas/cache/sponsored-intelligence/si-send-message-request.json
+++ b/schemas/cache/sponsored-intelligence/si-send-message-request.json
@@ -1,50 +1,67 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "anyOf": [
-    {
-      "required": [
-        "message"
-      ]
-    },
-    {
-      "required": [
-        "action_response"
-      ]
-    }
-  ],
+  "title": "SI Send Message Request",
   "description": "Send a message to the brand agent within an active session",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. Each conversational turn is a distinct mutation of session transcript \u2014 without this key, a timeout-and-retry produces a duplicate turn and a duplicate model response. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each user turn.",
+      "minLength": 16,
+      "maxLength": 255,
+      "pattern": "^[A-Za-z0-9_.:-]{16,255}$"
+    },
+    "session_id": {
+      "type": "string",
+      "description": "Active session identifier"
+    },
+    "message": {
+      "type": "string",
+      "description": "User's message to the brand agent"
+    },
     "action_response": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Response to a previous action_button (e.g., user clicked checkout)",
       "properties": {
         "action": {
-          "description": "The action that was triggered",
-          "type": "string"
+          "type": "string",
+          "description": "The action that was triggered"
         },
         "payload": {
-          "description": "Action-specific response data",
-          "type": "object"
+          "type": "object",
+          "description": "Action-specific response data"
         }
       },
-      "type": "object"
+      "additionalProperties": true
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
       "$ref": "../core/ext.json"
-    },
-    "message": {
-      "description": "User's message to the brand agent",
-      "type": "string"
-    },
-    "session_id": {
-      "description": "Active session identifier",
-      "type": "string"
     }
   },
   "required": [
+    "idempotency_key",
     "session_id"
   ],
-  "title": "SI Send Message Request",
-  "type": "object"
+  "anyOf": [
+    {
+      "required": [
+        "message"
+      ]
+    },
+    {
+      "required": [
+        "action_response"
+      ]
+    }
+  ],
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-send-message-response.json b/schemas/cache/sponsored-intelligence/si-send-message-response.json
index a947fdad5..9296d8855 100644
--- a/schemas/cache/sponsored-intelligence/si-send-message-response.json
+++ b/schemas/cache/sponsored-intelligence/si-send-message-response.json
@@ -1,48 +1,70 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Send Message Response",
   "description": "Brand agent's response to a user message",
+  "type": "object",
   "properties": {
-    "errors": {
-      "items": {
-        "$ref": "../core/error.json"
+    "session_id": {
+      "type": "string",
+      "description": "Session identifier"
+    },
+    "response": {
+      "type": "object",
+      "description": "Brand agent's response",
+      "properties": {
+        "message": {
+          "type": "string",
+          "description": "Conversational message from brand agent"
+        },
+        "surface": {
+          "$ref": "../a2ui/surface.json",
+          "description": "A2UI surface with interactive components"
+        },
+        "ui_elements": {
+          "type": "array",
+          "items": {
+            "$ref": "si-ui-element.json"
+          },
+          "description": "Visual components to render (DEPRECATED: use surface instead)",
+          "deprecated": true
+        }
       },
-      "type": "array"
+      "additionalProperties": true
     },
-    "ext": {
-      "$ref": "../core/ext.json"
+    "mcp_resource_uri": {
+      "type": "string",
+      "description": "MCP resource URI for hosts with MCP Apps support (e.g., ui://si/session-abc123)"
+    },
+    "session_status": {
+      "$ref": "../enums/si-session-status.json",
+      "description": "Current session status. On a successful response, one of: active, pending_handoff, or complete. Terminated sessions return error codes (SESSION_NOT_FOUND or SESSION_TERMINATED) instead of a success response."
     },
     "handoff": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Handoff request when session_status is pending_handoff",
       "properties": {
-        "context_for_checkout": {
-          "additionalProperties": true,
-          "description": "Context to pass to ACP for seamless checkout",
-          "properties": {
-            "applied_offers": {
-              "description": "Offer IDs that were applied during the conversation",
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
-            },
-            "conversation_summary": {
-              "description": "Summary of the conversation leading to purchase",
-              "type": "string"
-            }
-          },
-          "type": "object"
+        "type": {
+          "type": "string",
+          "enum": [
+            "transaction",
+            "complete"
+          ],
+          "description": "Type of handoff: transaction (ready for ACP checkout) or complete (conversation done)"
         },
         "intent": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "For transaction handoffs: what the user wants to purchase",
           "properties": {
             "action": {
-              "description": "The commerce action (e.g., 'purchase')",
-              "type": "string"
+              "type": "string",
+              "description": "The commerce action (e.g., 'purchase')"
+            },
+            "product": {
+              "type": "object",
+              "description": "Product details for checkout"
             },
             "price": {
+              "type": "object",
               "description": "Price information",
               "properties": {
                 "amount": {
@@ -51,67 +73,48 @@
                 "currency": {
                   "type": "string"
                 }
-              },
-              "type": "object"
-            },
-            "product": {
-              "description": "Product details for checkout",
-              "type": "object"
+              }
             }
           },
-          "type": "object"
+          "additionalProperties": true
         },
-        "type": {
-          "description": "Type of handoff: transaction (ready for ACP checkout) or complete (conversation done)",
-          "enum": [
-            "transaction",
-            "complete"
-          ],
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "mcp_resource_uri": {
-      "description": "MCP resource URI for hosts with MCP Apps support (e.g., ui://si/session-abc123)",
-      "type": "string"
-    },
-    "response": {
-      "additionalProperties": true,
-      "description": "Brand agent's response",
-      "properties": {
-        "message": {
-          "description": "Conversational message from brand agent",
-          "type": "string"
-        },
-        "surface": {
-          "$ref": "../a2ui/surface.json",
-          "description": "A2UI surface with interactive components"
-        },
-        "ui_elements": {
-          "deprecated": true,
-          "description": "Visual components to render (DEPRECATED: use surface instead)",
-          "items": {
-            "$ref": "si-ui-element.json"
+        "context_for_checkout": {
+          "type": "object",
+          "description": "Context to pass to ACP for seamless checkout",
+          "properties": {
+            "conversation_summary": {
+              "type": "string",
+              "description": "Summary of the conversation leading to purchase"
+            },
+            "applied_offers": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Offer IDs that were applied during the conversation"
+            }
           },
-          "type": "array"
+          "additionalProperties": true
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "session_id": {
-      "description": "Session identifier",
-      "type": "string"
+    "errors": {
+      "type": "array",
+      "items": {
+        "$ref": "../core/error.json"
+      }
     },
-    "session_status": {
-      "$ref": "../enums/si-session-status.json",
-      "description": "Current session status. On a successful response, one of: active, pending_handoff, or complete. Terminated sessions return error codes (SESSION_NOT_FOUND or SESSION_TERMINATED) instead of a success response."
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "session_id",
     "session_status"
   ],
-  "title": "SI Send Message Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-terminate-session-request.json b/schemas/cache/sponsored-intelligence/si-terminate-session-request.json
index c4ac90d2f..7eeb3da34 100644
--- a/schemas/cache/sponsored-intelligence/si-terminate-session-request.json
+++ b/schemas/cache/sponsored-intelligence/si-terminate-session-request.json
@@ -1,13 +1,21 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "Request to terminate an SI session",
+  "title": "SI Terminate Session Request",
+  "description": "Request to terminate an SI session. Naturally idempotent \u2014 `session_id` is the dedup boundary, and terminating an already-terminated session is a no-op that returns the same terminal state. No `idempotency_key` is needed on this request.",
+  "type": "object",
   "properties": {
-    "ext": {
-      "$ref": "../core/ext.json"
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "session_id": {
+      "type": "string",
+      "description": "Session identifier to terminate"
     },
     "reason": {
-      "description": "Reason for termination",
+      "type": "string",
       "enum": [
         "handoff_transaction",
         "handoff_complete",
@@ -15,50 +23,51 @@
         "session_timeout",
         "host_terminated"
       ],
-      "type": "string"
-    },
-    "session_id": {
-      "description": "Session identifier to terminate",
-      "type": "string"
+      "description": "Reason for termination"
     },
     "termination_context": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Context for the termination",
       "properties": {
-        "cause": {
-          "description": "For host_terminated - why host ended session",
-          "type": "string"
-        },
         "summary": {
-          "description": "Summary of the conversation",
-          "type": "string"
+          "type": "string",
+          "description": "Summary of the conversation"
         },
         "transaction_intent": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "For handoff_transaction - what user wants to buy",
           "properties": {
             "action": {
+              "type": "string",
               "enum": [
                 "purchase",
                 "subscribe"
-              ],
-              "type": "string"
+              ]
             },
             "product": {
-              "description": "Product/service details",
-              "type": "object"
+              "type": "object",
+              "description": "Product/service details"
             }
           },
-          "type": "object"
+          "additionalProperties": true
+        },
+        "cause": {
+          "type": "string",
+          "description": "For host_terminated - why host ended session"
         }
       },
-      "type": "object"
+      "additionalProperties": true
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "session_id",
     "reason"
   ],
-  "title": "SI Terminate Session Request",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-terminate-session-response.json b/schemas/cache/sponsored-intelligence/si-terminate-session-response.json
index e7b2b2a38..e019a451a 100644
--- a/schemas/cache/sponsored-intelligence/si-terminate-session-response.json
+++ b/schemas/cache/sponsored-intelligence/si-terminate-session-response.json
@@ -1,80 +1,83 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "SI Terminate Session Response",
   "description": "Confirmation of session termination",
+  "type": "object",
   "properties": {
+    "session_id": {
+      "type": "string",
+      "description": "Terminated session identifier"
+    },
+    "terminated": {
+      "type": "boolean",
+      "description": "Whether session was successfully terminated"
+    },
+    "session_status": {
+      "$ref": "../enums/si-session-status.json",
+      "description": "Resulting session state. 'complete' for handoff_transaction/handoff_complete, 'terminated' for user_exit/session_timeout/host_terminated."
+    },
     "acp_handoff": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "ACP checkout handoff data. Present when reason is handoff_transaction.",
       "properties": {
-        "checkout_token": {
-          "description": "Opaque token for the checkout flow. The host passes this to the checkout endpoint to correlate the SI session with the transaction.",
-          "type": "string"
-        },
         "checkout_url": {
-          "description": "Brand's ACP checkout endpoint. Hosts MUST validate this is HTTPS before opening.",
+          "type": "string",
           "format": "uri",
-          "type": "string"
+          "description": "Brand's ACP checkout endpoint. Hosts MUST validate this is HTTPS before opening."
         },
-        "expires_at": {
-          "description": "When this handoff data expires. Hosts should initiate checkout before this time.",
-          "format": "date-time",
-          "type": "string"
+        "checkout_token": {
+          "type": "string",
+          "description": "Opaque token for the checkout flow. The host passes this to the checkout endpoint to correlate the SI session with the transaction."
         },
         "payload": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Rich checkout context to pass to the ACP endpoint (product details, applied offers, pricing). Alternative to checkout_token for integrations that need structured data.",
-          "type": "object"
+          "additionalProperties": true
+        },
+        "expires_at": {
+          "type": "string",
+          "format": "date-time",
+          "description": "When this handoff data expires. Hosts should initiate checkout before this time."
         }
       },
-      "type": "object"
-    },
-    "errors": {
-      "items": {
-        "$ref": "../core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "../core/ext.json"
+      "additionalProperties": true
     },
     "follow_up": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Suggested follow-up actions",
       "properties": {
         "action": {
+          "type": "string",
           "enum": [
             "save_for_later",
             "set_reminder",
             "subscribe_updates",
             "none"
-          ],
-          "type": "string"
+          ]
         },
         "data": {
-          "description": "Data for follow-up action",
-          "type": "object"
+          "type": "object",
+          "description": "Data for follow-up action"
         }
       },
-      "type": "object"
+      "additionalProperties": true
     },
-    "session_id": {
-      "description": "Terminated session identifier",
-      "type": "string"
+    "errors": {
+      "type": "array",
+      "items": {
+        "$ref": "../core/error.json"
+      }
     },
-    "session_status": {
-      "$ref": "../enums/si-session-status.json",
-      "description": "Resulting session state. 'complete' for handoff_transaction/handoff_complete, 'terminated' for user_exit/session_timeout/host_terminated."
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "terminated": {
-      "description": "Whether session was successfully terminated",
-      "type": "boolean"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
     "session_id",
     "terminated"
   ],
-  "title": "SI Terminate Session Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/sponsored-intelligence/si-ui-element.json b/schemas/cache/sponsored-intelligence/si-ui-element.json
index 13014398f..d3785d8a6 100644
--- a/schemas/cache/sponsored-intelligence/si-ui-element.json
+++ b/schemas/cache/sponsored-intelligence/si-ui-element.json
@@ -1,5 +1,32 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "SI UI Element",
+  "description": "Standard visual component that brand returns and host renders",
+  "type": "object",
+  "properties": {
+    "type": {
+      "type": "string",
+      "enum": [
+        "text",
+        "link",
+        "image",
+        "product_card",
+        "carousel",
+        "action_button",
+        "app_handoff",
+        "integration_actions"
+      ],
+      "description": "Component type"
+    },
+    "data": {
+      "type": "object",
+      "description": "Component-specific data",
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "type"
+  ],
   "additionalProperties": true,
   "allOf": [
     {
@@ -13,16 +40,16 @@
       "then": {
         "properties": {
           "data": {
+            "type": "object",
             "properties": {
               "message": {
-                "description": "Text message content",
-                "type": "string"
+                "type": "string",
+                "description": "Text message content"
               }
             },
             "required": [
               "message"
-            ],
-            "type": "object"
+            ]
           }
         }
       }
@@ -38,26 +65,26 @@
       "then": {
         "properties": {
           "data": {
+            "type": "object",
             "properties": {
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Link URL"
+              },
               "label": {
-                "description": "Link text",
-                "type": "string"
+                "type": "string",
+                "description": "Link text"
               },
               "preview": {
-                "description": "Show link preview",
-                "type": "boolean"
-              },
-              "url": {
-                "description": "Link URL",
-                "format": "uri",
-                "type": "string"
+                "type": "boolean",
+                "description": "Show link preview"
               }
             },
             "required": [
               "url",
               "label"
-            ],
-            "type": "object"
+            ]
           }
         }
       }
@@ -73,26 +100,26 @@
       "then": {
         "properties": {
           "data": {
+            "type": "object",
             "properties": {
+              "url": {
+                "type": "string",
+                "format": "uri",
+                "description": "Image URL"
+              },
               "alt": {
-                "description": "Alt text",
-                "type": "string"
+                "type": "string",
+                "description": "Alt text"
               },
               "caption": {
-                "description": "Image caption",
-                "type": "string"
-              },
-              "url": {
-                "description": "Image URL",
-                "format": "uri",
-                "type": "string"
+                "type": "string",
+                "description": "Image caption"
               }
             },
             "required": [
               "url",
               "alt"
-            ],
-            "type": "object"
+            ]
           }
         }
       }
@@ -108,49 +135,49 @@
       "then": {
         "properties": {
           "data": {
+            "type": "object",
             "properties": {
-              "badge": {
-                "description": "Badge text (e.g., 'Free Upgrade')",
-                "type": "string"
+              "title": {
+                "type": "string",
+                "description": "Product title"
               },
-              "cta": {
-                "properties": {
-                  "action": {
-                    "type": "string"
-                  },
-                  "label": {
-                    "type": "string"
-                  }
-                },
-                "type": "object"
+              "subtitle": {
+                "type": "string",
+                "description": "Product subtitle"
               },
-              "description": {
-                "description": "Product description",
-                "type": "string"
+              "price": {
+                "type": "string",
+                "description": "Price display string"
               },
               "image_url": {
-                "description": "Product image",
+                "type": "string",
                 "format": "uri",
-                "type": "string"
+                "description": "Product image"
               },
-              "price": {
-                "description": "Price display string",
-                "type": "string"
+              "description": {
+                "type": "string",
+                "description": "Product description"
               },
-              "subtitle": {
-                "description": "Product subtitle",
-                "type": "string"
+              "badge": {
+                "type": "string",
+                "description": "Badge text (e.g., 'Free Upgrade')"
               },
-              "title": {
-                "description": "Product title",
-                "type": "string"
+              "cta": {
+                "type": "object",
+                "properties": {
+                  "label": {
+                    "type": "string"
+                  },
+                  "action": {
+                    "type": "string"
+                  }
+                }
               }
             },
             "required": [
               "title",
               "price"
-            ],
-            "type": "object"
+            ]
           }
         }
       }
@@ -166,23 +193,23 @@
       "then": {
         "properties": {
           "data": {
+            "type": "object",
             "properties": {
+              "title": {
+                "type": "string",
+                "description": "Carousel title"
+              },
               "items": {
+                "type": "array",
                 "description": "Carousel items (product cards or images)",
                 "items": {
                   "type": "object"
-                },
-                "type": "array"
-              },
-              "title": {
-                "description": "Carousel title",
-                "type": "string"
+                }
               }
             },
             "required": [
               "items"
-            ],
-            "type": "object"
+            ]
           }
         }
       }
@@ -198,25 +225,25 @@
       "then": {
         "properties": {
           "data": {
+            "type": "object",
             "properties": {
-              "action": {
-                "description": "Action identifier (e.g., 'acp_checkout')",
-                "type": "string"
-              },
               "label": {
-                "description": "Button label",
-                "type": "string"
+                "type": "string",
+                "description": "Button label"
+              },
+              "action": {
+                "type": "string",
+                "description": "Action identifier (e.g., 'acp_checkout')"
               },
               "payload": {
-                "description": "Action payload",
-                "type": "object"
+                "type": "object",
+                "description": "Action payload"
               }
             },
             "required": [
               "label",
               "action"
-            ],
-            "type": "object"
+            ]
           }
         }
       }
@@ -232,7 +259,10 @@
       "then": {
         "properties": {
           "apps": {
+            "type": "object",
+            "description": "Platform-specific app handoff targets",
             "additionalProperties": {
+              "type": "object",
               "properties": {
                 "app_id": {
                   "type": "string"
@@ -241,14 +271,11 @@
                   "type": "string"
                 },
                 "url": {
-                  "format": "uri",
-                  "type": "string"
+                  "type": "string",
+                  "format": "uri"
                 }
-              },
-              "type": "object"
-            },
-            "description": "Platform-specific app handoff targets",
-            "type": "object"
+              }
+            }
           }
         }
       }
@@ -264,76 +291,49 @@
       "then": {
         "properties": {
           "data": {
+            "type": "object",
             "properties": {
               "actions": {
+                "type": "array",
                 "description": "Available integration actions",
                 "items": {
+                  "type": "object",
                   "properties": {
-                    "highlighted": {
-                      "description": "Whether this action should be visually emphasized",
-                      "type": "boolean"
-                    },
-                    "label": {
-                      "description": "User-facing button label",
-                      "type": "string"
-                    },
                     "type": {
-                      "description": "Integration type",
+                      "type": "string",
                       "enum": [
                         "mcp",
                         "a2a"
                       ],
-                      "type": "string"
+                      "description": "Integration type"
+                    },
+                    "label": {
+                      "type": "string",
+                      "description": "User-facing button label"
+                    },
+                    "highlighted": {
+                      "type": "boolean",
+                      "description": "Whether this action should be visually emphasized"
                     },
                     "url": {
-                      "description": "URL for the integration endpoint",
+                      "type": "string",
                       "format": "uri",
-                      "type": "string"
+                      "description": "URL for the integration endpoint"
                     }
                   },
                   "required": [
                     "type",
                     "label"
-                  ],
-                  "type": "object"
-                },
-                "type": "array"
+                  ]
+                }
               }
             },
             "required": [
               "actions"
-            ],
-            "type": "object"
+            ]
           }
         }
       }
     }
-  ],
-  "description": "Standard visual component that brand returns and host renders",
-  "properties": {
-    "data": {
-      "additionalProperties": true,
-      "description": "Component-specific data",
-      "type": "object"
-    },
-    "type": {
-      "description": "Component type",
-      "enum": [
-        "text",
-        "link",
-        "image",
-        "product_card",
-        "carousel",
-        "action_button",
-        "app_handoff",
-        "integration_actions"
-      ],
-      "type": "string"
-    }
-  },
-  "required": [
-    "type"
-  ],
-  "title": "SI UI Element",
-  "type": "object"
+  ]
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/available-package.json b/schemas/cache/tmp/available-package.json
index 8ada1c6a0..03f74f822 100644
--- a/schemas/cache/tmp/available-package.json
+++ b/schemas/cache/tmp/available-package.json
@@ -1,35 +1,35 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Available Package",
   "description": "A package available for contextual matching. Synced to providers at media buy creation time \u2014 not sent per request. Providers cache this metadata and use it when evaluating context match requests for the placement.",
+  "type": "object",
   "properties": {
-    "catalogs": {
-      "description": "The buyer's catalogs attached to this package, with selectors (ids, gtins, tags, category, query) scoping which items are in play. References synced catalogs by catalog_id. The provider resolves items from its cached copy.",
-      "items": {
-        "$ref": "../core/catalog.json"
-      },
-      "type": "array"
+    "package_id": {
+      "type": "string",
+      "description": "Unique identifier for the package"
+    },
+    "media_buy_id": {
+      "type": "string",
+      "description": "Media buy that this package belongs to"
     },
     "format_ids": {
+      "type": "array",
       "description": "Creative format identifiers eligible for this package. Uses the standard AdCP format-id object with agent_url and id for unambiguous format resolution across namespaces.",
       "items": {
         "$ref": "../core/format-id.json"
-      },
-      "type": "array"
+      }
     },
-    "media_buy_id": {
-      "description": "Media buy that this package belongs to",
-      "type": "string"
-    },
-    "package_id": {
-      "description": "Unique identifier for the package",
-      "type": "string"
+    "catalogs": {
+      "type": "array",
+      "description": "The buyer's catalogs attached to this package, with selectors (ids, gtins, tags, category, query) scoping which items are in play. References synced catalogs by catalog_id. The provider resolves items from its cached copy.",
+      "items": {
+        "$ref": "../core/catalog.json"
+      }
     }
   },
   "required": [
     "package_id",
     "media_buy_id"
   ],
-  "title": "Available Package",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/context-match-request.json b/schemas/cache/tmp/context-match-request.json
index ce113527e..0d7bd21a1 100644
--- a/schemas/cache/tmp/context-match-request.json
+++ b/schemas/cache/tmp/context-match-request.json
@@ -1,23 +1,63 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "description": "Sent by publisher to router or provider to evaluate packages against contextual signals. The provider uses its synced package set for the placement. MUST NOT contain user identity. The request_id MUST NOT correlate with any identity match request_id.",
+  "title": "Context Match Request",
+  "description": "Sent by publisher to router or provider to evaluate packages against contextual signals. The provider uses its synced package set for the placement. MUST NOT contain user identity. The request_id MUST NOT correlate with any identity match request_id. Extension fields (ext, context) are intentionally omitted \u2014 extension data in the context path could inadvertently carry or correlate user identity signals.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "$schema": {
-      "description": "Optional schema URI for validation. Ignored at runtime.",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "Optional schema URI for validation. Ignored at runtime."
+    },
+    "type": {
+      "type": "string",
+      "const": "context_match_request",
+      "description": "Message type discriminator for deserialization."
+    },
+    "protocol_version": {
+      "type": "string",
+      "description": "TMP protocol version. Allows receivers to handle semantic differences across versions.",
+      "default": "1.0"
+    },
+    "request_id": {
+      "type": "string",
+      "description": "Unique request identifier. MUST NOT correlate with any identity match request_id."
+    },
+    "property_rid": {
+      "type": "string",
+      "format": "uuid",
+      "description": "Property catalog UUID (UUID v7). Globally unique, stable identifier assigned by the property catalog. The primary key for TMP matching and property list targeting."
+    },
+    "property_id": {
+      "$ref": "../core/property-id.json",
+      "description": "Publisher's human-readable property slug (e.g., 'cnn_homepage'). Optional when property_rid is present. Useful for logging and debugging."
+    },
+    "property_type": {
+      "$ref": "../enums/property-type.json",
+      "description": "Type of the publisher property"
+    },
+    "placement_id": {
+      "type": "string",
+      "description": "Placement identifier from the publisher's placement registry in adagents.json. Identifies where on the property this ad opportunity exists. One placement per request."
     },
     "artifact": {
       "$ref": "../content-standards/artifact.json",
       "description": "Full content artifact adjacent to this ad opportunity. Same schema used for content standards evaluation. The publisher sends the artifact when they want the buyer to evaluate the full content. Contractual protections govern buyer use. TEE deployment upgrades contractual trust to cryptographic verification. Publishers MUST NOT include asset access credentials (bearer tokens, service accounts) \u2014 the router fans out to multiple buyer agents. For secured assets, use signed URLs with short expiry. Routers MUST strip access fields from artifacts before forwarding."
     },
     "artifact_refs": {
+      "type": "array",
       "description": "Public content references adjacent to this ad opportunity. Each artifact identifies content via a public identifier the buyer can resolve independently \u2014 no private registry sync required.",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "type": {
+            "type": "string",
             "description": "Identifier type. 'url' for web pages, 'url_hash' for URL-addressable content the publisher prefers not to share directly (buyer matches against pre-crawled index), 'eidr' for film/TV (EIDR DOI), 'gracenote' for music/TV (Gracenote TMS ID), 'isrc' for music recordings (International Standard Recording Code), 'gtin' for products (Global Trade Item Number \u2014 UPC, EAN, ISBN-13), 'rss_guid' for podcast episodes (RSS GUID), 'isbn' for books, 'custom' for publisher-defined identifiers.",
             "enum": [
               "url",
@@ -29,175 +69,142 @@
               "rss_guid",
               "isbn",
               "custom"
-            ],
-            "type": "string"
+            ]
           },
           "value": {
-            "description": "The identifier value. For 'url': the canonical content URL \u2014 MUST NOT contain user-specific path segments, query parameters, or fragments; use 'url_hash' when the publisher prefers not to reveal the URL. For 'url_hash': Blake3 hash of the canonicalized URL, base64-encoded (canonicalization: strip scheme, strip www./m./amp. prefixes, lowercase, strip trailing slash, strip query params and fragments). For 'eidr': the EIDR DOI (e.g., '10.5240/xxxx'). For 'gracenote': the Gracenote TMS ID (e.g., 'SH032541890000'). For 'isrc': the ISRC code (e.g., 'USRC17607839'). For 'gtin': the GTIN (e.g., '00012345678905'). For 'rss_guid': the episode GUID from the RSS feed. For 'isbn': the ISBN (e.g., '978-0-123456-78-9'). For 'custom': a publisher-defined identifier.",
-            "type": "string"
+            "type": "string",
+            "description": "The identifier value. For 'url': the canonical content URL \u2014 MUST NOT contain user-specific path segments, query parameters, or fragments; use 'url_hash' when the publisher prefers not to reveal the URL. For 'url_hash': Blake3 hash of the canonicalized URL, base64-encoded (canonicalization: strip scheme, strip www./m./amp. prefixes, lowercase, strip trailing slash, strip query params and fragments). For 'eidr': the EIDR DOI (e.g., '10.5240/xxxx'). For 'gracenote': the Gracenote TMS ID (e.g., 'SH032541890000'). For 'isrc': the ISRC code (e.g., 'USRC17607839'). For 'gtin': the GTIN (e.g., '00012345678905'). For 'rss_guid': the episode GUID from the RSS feed. For 'isbn': the ISBN (e.g., '978-0-123456-78-9'). For 'custom': a publisher-defined identifier."
           }
         },
         "required": [
           "type",
           "value"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "maxItems": 20,
       "minItems": 1,
-      "type": "array"
+      "maxItems": 20
+    },
+    "geo": {
+      "type": "object",
+      "description": "Coarse geographic location of the viewer. Publisher controls granularity \u2014 country is sufficient for regulatory compliance and volume filtering, region or metro helps with campaign targeting and valuation. Coarsened to prevent user identification: no postcode, no coordinates. All fields optional.",
+      "properties": {
+        "country": {
+          "type": "string",
+          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'GB', 'DE').",
+          "pattern": "^[A-Z]{2}$"
+        },
+        "region": {
+          "type": "string",
+          "description": "ISO 3166-2 subdivision code (e.g., 'US-CA', 'GB-SCT').",
+          "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$"
+        },
+        "metro": {
+          "type": "object",
+          "description": "Metro area, using the same classification systems as AdCP targeting.",
+          "properties": {
+            "system": {
+              "$ref": "../enums/metro-system.json",
+              "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')."
+            },
+            "value": {
+              "type": "string",
+              "description": "Metro code within the system (e.g., '501' for New York DMA)."
+            }
+          },
+          "required": [
+            "system",
+            "value"
+          ],
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": false
     },
     "context_signals": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Pre-computed classifier outputs for the content environment. Use when the publisher wants to provide classified context without sharing content or public references. Can supplement artifact_refs (e.g., URL + pre-classified topics) or replace them entirely (e.g., ephemeral conversation turns). Raw content MUST NOT be included \u2014 only classified outputs. The publisher is the classifier boundary.",
       "properties": {
-        "content_policies": {
-          "description": "Policy IDs from the AdCP policy registry that this content satisfies (e.g., 'common_sense_brand_safety' for Common Sense Brand Standards baseline). Buyers filter on policies they require. An empty array means no policies have been evaluated.",
+        "topics": {
+          "type": "array",
+          "description": "Content topic identifiers. Use IAB Content Taxonomy 3.0 IDs (e.g., '632' for Food & Drink) when taxonomy_id is 7, or human-readable strings (e.g., 'cooking.pasta') for custom taxonomies.",
           "items": {
             "type": "string"
           },
-          "maxItems": 20,
-          "type": "array"
-        },
-        "embedding": {
-          "description": "Content embedding as base64-encoded int8 vector. Captures semantic content beyond what topics and keywords express. Publishers declare the model used. For standardized matching, use the protocol-recommended model (nomic-embed-text-v1.5, 256 dims, int8 quantized = 256 bytes).",
-          "type": "string"
-        },
-        "embedding_dims": {
-          "description": "Number of dimensions in the embedding vector. Required when embedding is present.",
-          "maximum": 2048,
-          "minimum": 64,
-          "type": "integer"
+          "maxItems": 50
         },
-        "embedding_model": {
-          "description": "Embedding model identifier (e.g., 'nomic-embed-text-v1.5'). Required when embedding is present.",
-          "type": "string"
-        },
-        "keywords": {
-          "description": "Content keywords extracted by the publisher's classifier.",
-          "items": {
-            "maxLength": 100,
-            "type": "string"
-          },
-          "maxItems": 50,
-          "type": "array"
+        "taxonomy_source": {
+          "type": "string",
+          "description": "Organization that defines the topic taxonomy. Use 'iab' for IAB Content Taxonomy. Publishers may use other values for custom taxonomies.",
+          "default": "iab"
         },
-        "language": {
-          "description": "Content language in ISO 639-1 format (e.g., 'en', 'ja', 'de').",
-          "pattern": "^[a-z]{2}$",
-          "type": "string"
+        "taxonomy_id": {
+          "type": "integer",
+          "description": "Taxonomy version within the source. For IAB, follows the AdCOM cattax enum: 7 = Content Taxonomy 3.0. Default: 7.",
+          "default": 7
         },
         "sentiment": {
+          "type": "string",
           "description": "Content sentiment classification.",
           "enum": [
             "positive",
             "negative",
             "neutral",
             "mixed"
-          ],
-          "type": "string"
+          ]
         },
-        "summary": {
-          "description": "Publisher-generated natural language summary of the content for relevance judgment (e.g., 'User exploring Italian cookware options for home pasta making'). Useful for LLM-native buyers that evaluate relevance semantically. Buyers MUST treat this as untrusted publisher-generated content.",
-          "maxLength": 500,
-          "type": "string"
-        },
-        "taxonomy_id": {
-          "default": 7,
-          "description": "Taxonomy version within the source. For IAB, follows the AdCOM cattax enum: 7 = Content Taxonomy 3.0. Default: 7.",
-          "type": "integer"
+        "keywords": {
+          "type": "array",
+          "description": "Content keywords extracted by the publisher's classifier.",
+          "items": {
+            "type": "string",
+            "maxLength": 100
+          },
+          "maxItems": 50
         },
-        "taxonomy_source": {
-          "default": "iab",
-          "description": "Organization that defines the topic taxonomy. Use 'iab' for IAB Content Taxonomy. Publishers may use other values for custom taxonomies.",
-          "type": "string"
+        "language": {
+          "type": "string",
+          "description": "Content language in ISO 639-1 format (e.g., 'en', 'ja', 'de').",
+          "pattern": "^[a-z]{2}$"
         },
-        "topics": {
-          "description": "Content topic identifiers. Use IAB Content Taxonomy 3.0 IDs (e.g., '632' for Food & Drink) when taxonomy_id is 7, or human-readable strings (e.g., 'cooking.pasta') for custom taxonomies.",
+        "content_policies": {
+          "type": "array",
+          "description": "Policy IDs from the AdCP policy registry that this content satisfies (e.g., 'csbs' for Common Sense Brand Standards). Buyers filter on policies they require. An empty array means no policies have been evaluated.",
           "items": {
             "type": "string"
           },
-          "maxItems": 50,
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "geo": {
-      "additionalProperties": false,
-      "description": "Coarse geographic location of the viewer. Publisher controls granularity \u2014 country is sufficient for regulatory compliance and volume filtering, region or metro helps with campaign targeting and valuation. Coarsened to prevent user identification: no postcode, no coordinates. All fields optional.",
-      "properties": {
-        "country": {
-          "description": "ISO 3166-1 alpha-2 country code (e.g., 'US', 'GB', 'DE').",
-          "pattern": "^[A-Z]{2}$",
-          "type": "string"
+          "maxItems": 20
         },
-        "metro": {
-          "additionalProperties": false,
-          "description": "Metro area, using the same classification systems as AdCP targeting.",
-          "properties": {
-            "system": {
-              "$ref": "../enums/metro-system.json",
-              "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')."
-            },
-            "value": {
-              "description": "Metro code within the system (e.g., '501' for New York DMA).",
-              "type": "string"
-            }
-          },
-          "required": [
-            "system",
-            "value"
-          ],
-          "type": "object"
+        "summary": {
+          "type": "string",
+          "description": "Publisher-generated natural language summary of the content for relevance judgment (e.g., 'User exploring Italian cookware options for home pasta making'). Useful for LLM-native buyers that evaluate relevance semantically. Buyers MUST treat this as untrusted publisher-generated content.",
+          "maxLength": 500
         },
-        "region": {
-          "description": "ISO 3166-2 subdivision code (e.g., 'US-CA', 'GB-SCT').",
-          "pattern": "^[A-Z]{2}-[A-Z0-9]{1,3}$",
-          "type": "string"
+        "embedding": {
+          "type": "string",
+          "description": "Content embedding as base64-encoded int8 vector. Captures semantic content beyond what topics and keywords express. Publishers declare the model used. For standardized matching, use the protocol-recommended model (nomic-embed-text-v1.5, 256 dims, int8 quantized = 256 bytes)."
+        },
+        "embedding_model": {
+          "type": "string",
+          "description": "Embedding model identifier (e.g., 'nomic-embed-text-v1.5'). Required when embedding is present."
+        },
+        "embedding_dims": {
+          "type": "integer",
+          "description": "Number of dimensions in the embedding vector. Required when embedding is present.",
+          "minimum": 64,
+          "maximum": 2048
         }
       },
-      "type": "object"
+      "additionalProperties": false
     },
     "package_ids": {
+      "type": "array",
       "description": "Restrict evaluation to specific packages. When omitted, the provider evaluates all eligible packages for this placement (the common case). MUST NOT vary by user \u2014 the same package_ids must be sent for every user on a given placement. User-dependent filtering leaks identity into the context path.",
       "items": {
         "type": "string"
       },
-      "maxItems": 500,
       "minItems": 1,
-      "type": "array"
-    },
-    "placement_id": {
-      "description": "Placement identifier from the publisher's placement registry in adagents.json. Identifies where on the property this ad opportunity exists. One placement per request.",
-      "type": "string"
-    },
-    "property_id": {
-      "$ref": "../core/property-id.json",
-      "description": "Publisher's human-readable property slug (e.g., 'cnn_homepage'). Optional when property_rid is present. Useful for logging and debugging."
-    },
-    "property_rid": {
-      "description": "Property catalog UUID (UUID v7). Globally unique, stable identifier assigned by the property catalog. The primary key for TMP matching and property list targeting.",
-      "format": "uuid",
-      "type": "string"
-    },
-    "property_type": {
-      "$ref": "../enums/property-type.json",
-      "description": "Type of the publisher property"
-    },
-    "protocol_version": {
-      "default": "1.0",
-      "description": "TMP protocol version. Allows receivers to handle semantic differences across versions.",
-      "type": "string"
-    },
-    "request_id": {
-      "description": "Unique request identifier. MUST NOT correlate with any identity match request_id.",
-      "type": "string"
-    },
-    "type": {
-      "const": "context_match_request",
-      "description": "Message type discriminator for deserialization.",
-      "type": "string"
+      "maxItems": 500
     }
   },
   "required": [
@@ -207,6 +214,5 @@
     "property_type",
     "placement_id"
   ],
-  "title": "Context Match Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/context-match-response.json b/schemas/cache/tmp/context-match-response.json
index 940bb70de..456019f7e 100644
--- a/schemas/cache/tmp/context-match-response.json
+++ b/schemas/cache/tmp/context-match-response.json
@@ -1,65 +1,66 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "Response from router or provider with offers for matched packages. An empty offers array means no packages matched. For simple GAM integration, package_id flows as a macro via signals. For rich integrations, the offer includes brand, price, summary, and optionally an inline creative manifest.",
+  "title": "Context Match Response",
+  "description": "Response from router or provider with offers for matched packages. An empty offers array means no packages matched. For simple GAM integration, package_id flows as a macro via signals. For rich integrations, the offer includes brand, price, summary, and optionally an inline creative manifest. Extension fields (ext, context) are intentionally omitted \u2014 extension data in the context path could inadvertently carry or correlate user identity signals.",
+  "type": "object",
   "properties": {
-    "cache_ttl": {
-      "description": "Optional override for the default 5-minute cache TTL, in seconds. When present, the router MUST use this value instead of its default. Set to 0 to disable caching (e.g., when targeting configuration has just changed).",
-      "maximum": 86400,
-      "minimum": 0,
-      "type": "integer"
+    "type": {
+      "type": "string",
+      "const": "context_match_response",
+      "description": "Message type discriminator for deserialization."
+    },
+    "request_id": {
+      "type": "string",
+      "description": "Echoed request identifier from the context match request"
     },
     "offers": {
+      "type": "array",
       "description": "Offers from the buyer, one per activated package. An empty array means no packages matched. For simple activation, each offer has just package_id. For richer responses, offers include brand, price, summary, and creative manifest.",
       "items": {
         "$ref": "offer.json"
-      },
-      "type": "array"
+      }
     },
-    "request_id": {
-      "description": "Echoed request identifier from the context match request",
-      "type": "string"
+    "cache_ttl": {
+      "type": "integer",
+      "description": "Optional override for the default 5-minute cache TTL, in seconds. When present, the router MUST use this value instead of its default. Set to 0 to disable caching (e.g., when targeting configuration has just changed).",
+      "minimum": 0,
+      "maximum": 86400
     },
     "signals": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Response-level targeting signals for ad server pass-through. In the GAM case, these carry the key-value pairs that trigger line items. Not per-offer \u2014 applies to the response as a whole.",
       "properties": {
         "segments": {
+          "type": "array",
           "description": "Contextual segment identifiers",
           "items": {
             "type": "string"
-          },
-          "type": "array"
+          }
         },
         "targeting_kvs": {
+          "type": "array",
           "description": "Key-value pairs for ad server targeting",
           "items": {
-            "additionalProperties": false,
+            "type": "object",
             "properties": {
               "key": {
-                "description": "Targeting key",
-                "type": "string"
+                "type": "string",
+                "description": "Targeting key"
               },
               "value": {
-                "description": "Targeting value",
-                "type": "string"
+                "type": "string",
+                "description": "Targeting value"
               }
             },
             "required": [
               "key",
               "value"
             ],
-            "type": "object"
-          },
-          "type": "array"
+            "additionalProperties": false
+          }
         }
       },
-      "type": "object"
-    },
-    "type": {
-      "const": "context_match_response",
-      "description": "Message type discriminator for deserialization.",
-      "type": "string"
+      "additionalProperties": true
     }
   },
   "required": [
@@ -67,6 +68,5 @@
     "request_id",
     "offers"
   ],
-  "title": "Context Match Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/error.json b/schemas/cache/tmp/error.json
index 3cf7c8b85..59610c2a9 100644
--- a/schemas/cache/tmp/error.json
+++ b/schemas/cache/tmp/error.json
@@ -1,9 +1,20 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "TMP Error",
   "description": "Error response from a TMP provider or router. Returned instead of a normal response when the provider cannot process the request. Distinguishes errors from empty results (an empty offers array is a valid response meaning no matches, not an error).",
+  "type": "object",
   "properties": {
+    "type": {
+      "type": "string",
+      "const": "error",
+      "description": "Message type discriminator for deserialization."
+    },
+    "request_id": {
+      "type": "string",
+      "description": "Echoed request identifier from the original request"
+    },
     "code": {
+      "type": "string",
       "description": "Machine-readable error code",
       "enum": [
         "invalid_request",
@@ -12,21 +23,11 @@
         "timeout",
         "internal_error",
         "provider_unavailable"
-      ],
-      "type": "string"
+      ]
     },
     "message": {
-      "description": "Human-readable error description for debugging",
-      "type": "string"
-    },
-    "request_id": {
-      "description": "Echoed request identifier from the original request",
-      "type": "string"
-    },
-    "type": {
-      "const": "error",
-      "description": "Message type discriminator for deserialization.",
-      "type": "string"
+      "type": "string",
+      "description": "Human-readable error description for debugging"
     }
   },
   "required": [
@@ -34,6 +35,5 @@
     "request_id",
     "code"
   ],
-  "title": "TMP Error",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/identity-match-request.json b/schemas/cache/tmp/identity-match-request.json
index 440cc2297..06df3016c 100644
--- a/schemas/cache/tmp/identity-match-request.json
+++ b/schemas/cache/tmp/identity-match-request.json
@@ -1,74 +1,100 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "description": "Sent by publisher to evaluate user eligibility for packages using an opaque identity token. MUST NOT contain page context. The request_id MUST NOT correlate with any context match request_id. The package_ids MUST include ALL active packages for the buyer, not just those on the current page, to prevent set-correlation attacks.",
+  "title": "Identity Match Request",
+  "description": "Sent by publisher to evaluate user eligibility for packages using an opaque identity token. MUST NOT contain page context. The request_id MUST NOT correlate with any context match request_id. The package_ids MUST include ALL active packages for the buyer, not just those on the current page, to prevent set-correlation attacks. Extension fields (ext, context) are intentionally omitted to prevent data leakage across the identity privacy boundary.",
+  "type": "object",
   "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
     "$schema": {
-      "description": "Optional schema URI for validation. Ignored at runtime.",
+      "type": "string",
       "format": "uri",
-      "type": "string"
+      "description": "Optional schema URI for validation. Ignored at runtime."
+    },
+    "type": {
+      "type": "string",
+      "const": "identity_match_request",
+      "description": "Message type discriminator for deserialization."
+    },
+    "protocol_version": {
+      "type": "string",
+      "description": "TMP protocol version. Allows receivers to handle semantic differences across versions.",
+      "default": "1.0"
+    },
+    "request_id": {
+      "type": "string",
+      "description": "Unique request identifier. MUST NOT correlate with any context match request_id."
+    },
+    "identities": {
+      "type": "array",
+      "description": "Identity tokens for the user, each tagged with its type. Publishers SHOULD include every token they have available \u2014 the buyer resolves on whichever graph matches. Entry order is not semantically significant; buyers use their own preference order when multiple entries resolve. Duplicate `(uid_type, user_token)` pairs MUST NOT appear; routers MAY reject or dedupe. `maxItems: 3` matches the TMPX plaintext budget (~120 bytes after HPKE overhead fits three 32-byte tokens); exceeding it forces buyer-side truncation.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "user_token": {
+            "type": "string",
+            "description": "Opaque token from an identity provider (ID5, LiveRamp, UID2) or publisher-generated. Buyer may map to internal identity graph but cannot reverse to PII."
+          },
+          "uid_type": {
+            "$ref": "../enums/uid-type.json",
+            "description": "Type of the user identifier. Tells the buyer which identity graph to resolve against, avoiding trial-and-error matching."
+          }
+        },
+        "required": [
+          "user_token",
+          "uid_type"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1,
+      "maxItems": 3
     },
     "consent": {
-      "additionalProperties": false,
+      "type": "object",
       "description": "Privacy consent signals. Buyers in regulated jurisdictions MUST NOT process the user token without consent information.",
       "properties": {
         "gdpr": {
-          "description": "Whether GDPR applies to this request.",
-          "type": "boolean"
-        },
-        "gpp": {
-          "description": "IAB Global Privacy Platform string.",
-          "type": "string"
+          "type": "boolean",
+          "description": "Whether GDPR applies to this request."
         },
         "tcf_consent": {
-          "description": "IAB TCF v2.2 consent string. Present when gdpr is true.",
-          "type": "string"
+          "type": "string",
+          "description": "IAB TCF v2.2 consent string. Present when gdpr is true."
+        },
+        "gpp": {
+          "type": "string",
+          "description": "IAB Global Privacy Platform string."
         },
         "us_privacy": {
-          "description": "US Privacy string (CCPA). Deprecated in favor of GPP but still widely used.",
-          "type": "string"
+          "type": "string",
+          "description": "US Privacy string (CCPA). Deprecated in favor of GPP but still widely used."
         }
       },
-      "type": "object"
+      "additionalProperties": false
     },
     "package_ids": {
+      "type": "array",
       "description": "ALL active package identifiers for this buyer at this publisher. MUST include every active package, not just those on the current page, to prevent correlation with Context Match requests.",
       "items": {
         "type": "string"
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "protocol_version": {
-      "default": "1.0",
-      "description": "TMP protocol version. Allows receivers to handle semantic differences across versions.",
-      "type": "string"
+      "minItems": 1
     },
-    "request_id": {
-      "description": "Unique request identifier. MUST NOT correlate with any context match request_id.",
-      "type": "string"
-    },
-    "type": {
-      "const": "identity_match_request",
-      "description": "Message type discriminator for deserialization.",
-      "type": "string"
-    },
-    "uid_type": {
-      "$ref": "../enums/uid-type.json",
-      "description": "Type of the user identifier. Tells the buyer which identity graph to resolve against, avoiding trial-and-error matching."
-    },
-    "user_token": {
-      "description": "Opaque token from an identity provider (ID5, LiveRamp, UID2) or publisher-generated",
-      "type": "string"
+    "country": {
+      "type": "string",
+      "pattern": "^[A-Z]{2}$",
+      "description": "ISO 3166-1 alpha-2 country code. Routing directive for the TMP Router \u2014 used to select the correct regional provider. The router MUST strip this field before forwarding the request to the buyer agent. Not an identity signal."
     }
   },
   "required": [
     "type",
     "request_id",
-    "user_token",
-    "uid_type",
+    "identities",
     "package_ids"
   ],
-  "title": "Identity Match Request",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/identity-match-response.json b/schemas/cache/tmp/identity-match-response.json
index 628c6869b..ef26e8ec8 100644
--- a/schemas/cache/tmp/identity-match-response.json
+++ b/schemas/cache/tmp/identity-match-response.json
@@ -1,29 +1,34 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "Response indicating which packages the user is eligible for. The ttl_sec field defines a caching contract: the router caches this response and returns cached eligibility without re-querying the buyer during the TTL window.",
+  "title": "Identity Match Response",
+  "description": "Response indicating which packages the user is eligible for. The ttl_sec field defines a caching contract: the router caches this response and returns cached eligibility without re-querying the buyer during the TTL window. Extension fields (ext, context) are intentionally omitted to prevent data leakage across the identity privacy boundary.",
+  "type": "object",
   "properties": {
+    "type": {
+      "type": "string",
+      "const": "identity_match_response",
+      "description": "Message type discriminator for deserialization."
+    },
+    "request_id": {
+      "type": "string",
+      "description": "Echoed request identifier from the identity match request"
+    },
     "eligible_package_ids": {
+      "type": "array",
       "description": "Package IDs the user is eligible for. Packages not listed are ineligible.",
       "items": {
         "type": "string"
-      },
-      "type": "array"
-    },
-    "request_id": {
-      "description": "Echoed request identifier from the identity match request",
-      "type": "string"
+      }
     },
     "ttl_sec": {
+      "type": "integer",
       "description": "How long the router should cache this response, in seconds. The router returns cached eligibility without re-querying the buyer during this window. A value of 0 means do not cache.",
-      "maximum": 86400,
       "minimum": 0,
-      "type": "integer"
+      "maximum": 86400
     },
-    "type": {
-      "const": "identity_match_response",
-      "description": "Message type discriminator for deserialization.",
-      "type": "string"
+    "tmpx": {
+      "type": "string",
+      "description": "HPKE-encrypted exposure token containing the resolved user identity tokens. The publisher substitutes this into creative tracking URLs as {TMPX}. The buyer's impression pixel receives the token at serve time, enabling real-time per-user frequency state updates. Wire format: kid.base64url_nopad(ciphertext) \u2014 unpadded base64url per RFC 4648 section 5 (no = characters). Publishers MUST treat this value as opaque pass-through data."
     }
   },
   "required": [
@@ -32,6 +37,5 @@
     "eligible_package_ids",
     "ttl_sec"
   ],
-  "title": "Identity Match Response",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/offer-price.json b/schemas/cache/tmp/offer-price.json
index caaeaf555..db5af1c1a 100644
--- a/schemas/cache/tmp/offer-price.json
+++ b/schemas/cache/tmp/offer-price.json
@@ -1,20 +1,22 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
+  "title": "Offer Price",
   "description": "Lightweight price for a TMP offer. Used when the product supports variable pricing and the buyer specifies a price at match time.",
+  "type": "object",
   "properties": {
     "amount": {
+      "type": "number",
       "description": "Price amount in the specified currency",
-      "minimum": 0,
-      "type": "number"
+      "minimum": 0
     },
     "currency": {
-      "default": "USD",
+      "type": "string",
       "description": "ISO 4217 currency code",
       "pattern": "^[A-Z]{3}$",
-      "type": "string"
+      "default": "USD"
     },
     "model": {
+      "type": "string",
       "description": "Pricing model for this offer",
       "enum": [
         "cpm",
@@ -22,14 +24,12 @@
         "cpcv",
         "cpa",
         "flat"
-      ],
-      "type": "string"
+      ]
     }
   },
   "required": [
     "amount",
     "model"
   ],
-  "title": "Offer Price",
-  "type": "object"
+  "additionalProperties": false
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/offer.json b/schemas/cache/tmp/offer.json
index f7aa6c2c2..48b0d7df2 100644
--- a/schemas/cache/tmp/offer.json
+++ b/schemas/cache/tmp/offer.json
@@ -1,39 +1,39 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Offer",
   "description": "A buyer's response to a context match request. Generalizes package activation \u2014 a simple activation is an offer with just package_id. A rich response includes brand, price, summary, and optionally an inline creative manifest.",
+  "type": "object",
   "properties": {
+    "package_id": {
+      "type": "string",
+      "description": "Package identifier from the media buy."
+    },
     "brand": {
       "$ref": "../core/brand-ref.json",
       "description": "Brand for this offer. Required when the product allows dynamic brands (brand selected at match time rather than fixed on the package). For single-brand packages, the brand is already known from the media buy."
     },
+    "price": {
+      "$ref": "offer-price.json",
+      "description": "Price for this offer. Only present when the product supports variable pricing. For fixed-price packages, price is already set on the media buy."
+    },
+    "summary": {
+      "type": "string",
+      "description": "Buyer-generated description of the offer, for the publisher to judge relevance. E.g., '50% off Goldenfield mayo \u2014 recipe integration'. The publisher (or their AI assistant) uses this to decide whether the offer fits the context."
+    },
     "creative_manifest": {
       "$ref": "../core/creative-manifest.json",
       "description": "Full creative details, inline. When present, the publisher has everything needed to render. Inline for small creatives (markdown, product card). For large creatives (VAST, video), the manifest references external assets via URLs."
     },
     "macros": {
+      "type": "object",
+      "description": "Key-value pairs the buyer passes for dynamic creative rendering or attribution tracking. In the GAM case, these flow as macro values. Not tied to user identity \u2014 attribution reconciliation happens via delivery reporting or clean room.",
       "additionalProperties": {
         "type": "string"
-      },
-      "description": "Key-value pairs the buyer passes for dynamic creative rendering or attribution tracking. In the GAM case, these flow as macro values. Not tied to user identity \u2014 attribution reconciliation happens via delivery reporting or clean room.",
-      "type": "object"
-    },
-    "package_id": {
-      "description": "Package identifier from the media buy.",
-      "type": "string"
-    },
-    "price": {
-      "$ref": "offer-price.json",
-      "description": "Price for this offer. Only present when the product supports variable pricing. For fixed-price packages, price is already set on the media buy."
-    },
-    "summary": {
-      "description": "Buyer-generated description of the offer, for the publisher to judge relevance. E.g., '50% off Goldenfield mayo \u2014 recipe integration'. The publisher (or their AI assistant) uses this to decide whether the offer fits the context.",
-      "type": "string"
+      }
     }
   },
   "required": [
     "package_id"
   ],
-  "title": "Offer",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/tmp/provider-registration.json b/schemas/cache/tmp/provider-registration.json
new file mode 100644
index 000000000..f1dd56e8a
--- /dev/null
+++ b/schemas/cache/tmp/provider-registration.json
@@ -0,0 +1,117 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "TMP Provider Registration",
+  "description": "Declares a TMP provider's endpoint, capabilities, and operational parameters. Used in router configuration (static YAML or dynamic API) and referenced by product-level provider entries. The publisher controls which providers participate in their ad decisioning. Endpoint URLs MUST be validated against SSRF, and dynamic registration endpoints MUST authenticate callers \u2014 see docs/trusted-match/specification#provider-registration-security.",
+  "type": "object",
+  "properties": {
+    "provider_id": {
+      "type": "string",
+      "description": "Stable identifier for this provider registration. Used in logs, metrics, and cache keys. Publishers assign this \u2014 it is not the provider's agent_url."
+    },
+    "endpoint": {
+      "type": "string",
+      "format": "uri",
+      "description": "Base URL the router calls. The router appends /context for Context Match and /identity for Identity Match. MUST be HTTPS in production, validated against the canonical reserved IPv4 and IPv6 ranges, with the TCP connection pinned to the validated IP (DNS re-resolution alone is insufficient against rebinding). See docs/trusted-match/specification#provider-registration-security and docs/building/implementation/security#webhook-url-validation-ssrf."
+    },
+    "context_match": {
+      "type": "boolean",
+      "description": "Provider handles Context Match requests (POST /context)."
+    },
+    "identity_match": {
+      "type": "boolean",
+      "description": "Provider handles Identity Match requests (POST /identity)."
+    },
+    "countries": {
+      "type": "array",
+      "description": "ISO 3166-1 alpha-2 country codes this provider serves. The router filters Identity Match providers by the request's country field. MUST be present and non-empty when identity_match is true.",
+      "items": {
+        "type": "string",
+        "pattern": "^[A-Z]{2}$"
+      },
+      "minItems": 1
+    },
+    "uid_types": {
+      "type": "array",
+      "description": "Identity types this provider can resolve. The router selects Identity Match providers whose uid_types overlaps with any uid_type in the request's identities array. MUST be present and non-empty when identity_match is true.",
+      "items": {
+        "$ref": "../enums/uid-type.json"
+      },
+      "minItems": 1
+    },
+    "properties": {
+      "type": "array",
+      "description": "Property RIDs (UUID v7) this provider serves. When present, the router only sends requests from these properties to this provider. When absent, the provider serves all properties.",
+      "items": {
+        "type": "string",
+        "format": "uuid"
+      },
+      "minItems": 1
+    },
+    "timeout_ms": {
+      "type": "integer",
+      "description": "Per-provider timeout in milliseconds. The router skips this provider if it does not respond within this budget. Must be less than or equal to the router's overall latency_budget_ms. The router may further reduce this based on adaptive timeout allocation.",
+      "minimum": 5,
+      "maximum": 5000,
+      "default": 50
+    },
+    "priority": {
+      "type": "integer",
+      "description": "Provider ordering for merge conflict resolution. Lower values have higher priority. When two providers return offers for the same package_id (a configuration error), the router keeps the offer from the higher-priority provider. Also used for adaptive timeout allocation \u2014 higher-priority providers receive a larger share of the latency budget.",
+      "minimum": 0,
+      "default": 0
+    },
+    "status": {
+      "type": "string",
+      "description": "Provider lifecycle status. Active providers receive requests. Inactive providers are skipped entirely. Draining providers stop receiving new requests but in-flight requests complete normally.",
+      "enum": [
+        "active",
+        "inactive",
+        "draining"
+      ],
+      "default": "active"
+    }
+  },
+  "required": [
+    "provider_id",
+    "endpoint"
+  ],
+  "if": {
+    "properties": {
+      "identity_match": {
+        "const": true
+      }
+    },
+    "required": [
+      "identity_match"
+    ]
+  },
+  "then": {
+    "required": [
+      "countries",
+      "uid_types"
+    ]
+  },
+  "anyOf": [
+    {
+      "properties": {
+        "context_match": {
+          "const": true
+        }
+      },
+      "required": [
+        "context_match"
+      ]
+    },
+    {
+      "properties": {
+        "identity_match": {
+          "const": true
+        }
+      },
+      "required": [
+        "identity_match"
+      ]
+    }
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/scripts/consolidate_exports.py b/scripts/consolidate_exports.py
index 6803020e1..ed4dc434b 100644
--- a/scripts/consolidate_exports.py
+++ b/scripts/consolidate_exports.py
@@ -49,11 +49,15 @@ def generate_consolidated_exports() -> str:
     """Generate the consolidated exports file content."""
 
     # Discover all modules recursively (including subdirectories)
-    # Process enums/ first so canonical enum definitions take priority over inline duplicates
-    def _module_sort_key(p: Path) -> tuple[int, str]:
+    # Sort order: enums first (canonical enum definitions), then non-bundled,
+    # then bundled. Bundled schemas inline the same types as non-bundled, but
+    # as renumbered/enum duplicates — we want the canonical class definitions
+    # from non-bundled to win the first-seen dedup.
+    def _module_sort_key(p: Path) -> tuple[int, int, str]:
         rel = p.relative_to(GENERATED_POC_DIR)
         is_enum = rel.parts[0] == "enums" if len(rel.parts) > 1 else False
-        return (0 if is_enum else 1, str(p))
+        is_bundled = rel.parts[0] == "bundled" if len(rel.parts) > 1 else False
+        return (0 if is_enum else 1, 1 if is_bundled else 0, str(p))
 
     modules = sorted(GENERATED_POC_DIR.rglob("*.py"), key=_module_sort_key)
     modules = [m for m in modules if m.stem != "__init__" and not m.stem.startswith(".")]
@@ -94,52 +98,65 @@ def _module_sort_key(p: Path) -> tuple[int, str]:
     special_imports = []
     collision_modules_seen: dict[str, set[str]] = {name: set() for name in known_collisions}
 
+    def _stem_matches_export(module_stem: str, export_name: str) -> bool:
+        """True if the module filename matches the export (snake_case ↔ PascalCase)."""
+        return module_stem.replace("_", "").lower() == export_name.lower()
+
+    # First pass: decide which module owns each export name.
+    # Canonical class definitions live in files named after the class
+    # (e.g. core/format.py defines Format). Prefer those over duplicates
+    # elsewhere (bundled copies, enum aliases in unrelated files).
+    module_exports: dict[str, set[str]] = {}
     for module_path in modules:
-        # Get relative path from generated_poc directory
         rel_path = module_path.relative_to(GENERATED_POC_DIR)
-        # Convert to module path (e.g., "core/error.py" -> "core.error")
         module_parts = list(rel_path.parts[:-1]) + [rel_path.stem]
         module_name = ".".join(module_parts)
-        # For display, use the stem only
         display_name = rel_path.stem
 
         exports = extract_exports_from_module(module_path)
-
         if not exports:
             continue
+        module_exports[module_name] = exports
 
-        # Filter out names that collide with already-exported names
-        unique_exports = set()
         for export_name in exports:
-            # Special case: Known collisions - track all modules that define them
             if export_name in known_collisions and display_name in known_collisions[export_name]:
                 collision_modules_seen[export_name].add(module_name)
-                export_to_module[export_name] = module_name  # Track that we've seen it
-                continue  # Don't add to unique_exports, we'll handle specially
+                # Sentinel: known collisions are only imported via qualified
+                # names later, never as a primary export.
+                export_to_module[export_name] = "<collision>"
+                continue
 
             if export_name in export_to_module:
                 first_module = export_to_module[export_name]
-                # Collision detected - skip this duplicate
-                collisions.append(
-                    f"  {export_name}: defined in both "
-                    f"{first_module} and {module_name} (using {first_module})"
-                )
+                first_stem = first_module.rsplit(".", 1)[-1]
+                if _stem_matches_export(display_name, export_name) and not _stem_matches_export(
+                    first_stem, export_name
+                ):
+                    export_to_module[export_name] = module_name
+                    collisions.append(
+                        f"  {export_name}: defined in ['{first_module}', '{module_name}'] "
+                        f"(preferring {module_name} — stem matches export name)"
+                    )
+                else:
+                    collisions.append(
+                        f"  {export_name}: defined in both "
+                        f"{first_module} and {module_name} (using {first_module})"
+                    )
             else:
-                unique_exports.add(export_name)
                 export_to_module[export_name] = module_name
 
-        if not unique_exports:
+    # Second pass: emit one import line per module with only the exports it owns.
+    for module_name, exports in module_exports.items():
+        owned = {e for e in exports if export_to_module.get(e) == module_name}
+        display_name = module_name.rsplit(".", 1)[-1]
+        if not owned:
             print(f"  {display_name}: 0 unique exports (all collisions)")
             continue
-
-        print(f"  {display_name}: {len(unique_exports)} exports")
-
-        # Create import statement with only unique exports
-        exports_str = ", ".join(sorted(unique_exports))
+        print(f"  {display_name}: {len(owned)} exports")
+        exports_str = ", ".join(sorted(owned))
         import_line = f"from adcp.types.generated_poc.{module_name} import {exports_str}"
         import_lines.append(import_line)
-
-        all_exports.update(unique_exports)
+        all_exports.update(owned)
 
     # Generate special imports for all known collisions
     for type_name, modules_seen in collision_modules_seen.items():
@@ -149,11 +166,14 @@ def _module_sort_key(p: Path) -> tuple[int, str]:
             f"  {type_name}: defined in {sorted(modules_seen)} (all exported with qualified names)"
         )
         for module_name in sorted(modules_seen):
-            # Create qualified name from module path (e.g., "core.package" -> "Package")
+            # Non-bundled versions use the stem as the alias suffix
+            # (_PackageFromGetMediaBuysResponse). Bundled versions prepend
+            # "Bundled" so they don't collide when the same filename exists
+            # under both roots.
             parts = module_name.split(".")
-            qualified_name = (
-                f"_{type_name}From{parts[-1].replace('_', ' ').title().replace(' ', '')}"
-            )
+            stem = parts[-1].replace("_", " ").title().replace(" ", "")
+            prefix = "Bundled" if parts[0] == "bundled" else ""
+            qualified_name = f"_{type_name}From{prefix}{stem}"
             import_str = (
                 f"from adcp.types.generated_poc.{module_name}"
                 f" import {type_name} as {qualified_name}"
diff --git a/scripts/fix_schema_refs.py b/scripts/fix_schema_refs.py
index d433c02cf..9509b6309 100755
--- a/scripts/fix_schema_refs.py
+++ b/scripts/fix_schema_refs.py
@@ -77,8 +77,6 @@ def main():
 
     # Find all JSON files recursively (including subdirectories)
     schema_files = list(SCHEMAS_DIR.rglob("*.json"))
-    # Filter out .hashes.json
-    schema_files = [f for f in schema_files if f.name != ".hashes.json"]
 
     print(f"Found {len(schema_files)} schemas\n")
 
diff --git a/scripts/generate_ergonomic_coercion.py b/scripts/generate_ergonomic_coercion.py
index 83354019e..ae69b243c 100644
--- a/scripts/generate_ergonomic_coercion.py
+++ b/scripts/generate_ergonomic_coercion.py
@@ -223,11 +223,38 @@ def get_symbol_name(cls) -> str:
 def generate_code() -> str:
     """Generate the _ergonomic.py module content."""
     # Import all the types we need to analyze
+    from adcp.types.generated_poc.media_buy import (
+        create_media_buy_response as _cmbr_module,
+    )
     from adcp.types.generated_poc.media_buy.create_media_buy_request import CreateMediaBuyRequest
-    from adcp.types.generated_poc.media_buy.create_media_buy_response import CreateMediaBuyResponse1
     from adcp.types.generated_poc.media_buy.get_media_buy_delivery_response import (
         GetMediaBuyDeliveryResponse,
     )
+
+    # Resolve the CreateMediaBuyResponse success variant. Different
+    # datamodel-codegen versions emit the variants under shifting names:
+    # sometimes `CreateMediaBuyResponse1`/`...2`, sometimes `CreateMediaBuyResponse`
+    # (success, unnumbered) + `CreateMediaBuyResponseN`. Find the success
+    # variant by scanning the module for a pydantic model whose fields include
+    # the success-only `media_buy_id` key.
+    from pydantic import BaseModel as _PydBaseModel
+
+    def _find_success_variant() -> type[_PydBaseModel]:
+        for name in dir(_cmbr_module):
+            obj = getattr(_cmbr_module, name)
+            if (
+                isinstance(obj, type)
+                and issubclass(obj, _PydBaseModel)
+                and "media_buy_id" in getattr(obj, "model_fields", {})
+            ):
+                return obj
+        raise ImportError(
+            "Could not find CreateMediaBuyResponse success variant "
+            "(class with a `media_buy_id` field) in "
+            "adcp.types.generated_poc.media_buy.create_media_buy_response"
+        )
+
+    CreateMediaBuyResponse1 = _find_success_variant()
     from adcp.types.generated_poc.media_buy.get_products_request import (
         Field1 as GetProductsField,
         GetProductsRequest,
@@ -388,9 +415,14 @@ def generate_code() -> str:
     lines.append("from adcp.types.generated_poc.media_buy.package_request import PackageRequest")
     lines.append("from adcp.types.generated_poc.media_buy.package_update import PackageUpdate")
 
-    # Add response type imports
+    # Add response type imports. CreateMediaBuyResponse1's numeric suffix can
+    # shift between codegen versions; import under its actual class name.
+    cmbr_name = CreateMediaBuyResponse1.__name__
     lines.append("from adcp.types.generated_poc.media_buy.create_media_buy_response import (")
-    lines.append("    CreateMediaBuyResponse1,")
+    if cmbr_name == "CreateMediaBuyResponse1":
+        lines.append("    CreateMediaBuyResponse1,")
+    else:
+        lines.append(f"    {cmbr_name} as CreateMediaBuyResponse1,")
     lines.append(")")
     lines.append("from adcp.types.generated_poc.media_buy.get_media_buy_delivery_response import (")
     lines.append("    GetMediaBuyDeliveryResponse,")
diff --git a/scripts/generate_types.py b/scripts/generate_types.py
index 16fc510fb..fa24090b3 100755
--- a/scripts/generate_types.py
+++ b/scripts/generate_types.py
@@ -147,8 +147,8 @@ def flatten_schemas():
 
     # Recursively find all JSON schemas (including subdirectories)
     schema_files = list(SCHEMAS_DIR.rglob("*.json"))
-    # Filter out .hashes.json and index.json
-    schema_files = [f for f in schema_files if f.name not in (".hashes.json", "index.json")]
+    # Skip the top-level index.json
+    schema_files = [f for f in schema_files if f.name != "index.json"]
 
     for schema_file in schema_files:
         # Preserve directory structure relative to SCHEMAS_DIR
diff --git a/scripts/post_generate_fixes.py b/scripts/post_generate_fixes.py
index 79eaa6aa4..1559e66b4 100644
--- a/scripts/post_generate_fixes.py
+++ b/scripts/post_generate_fixes.py
@@ -332,6 +332,7 @@ def fix_constr_type_annotations():
     "ProvidePerformanceFeedbackResponse",
     "SyncAccountsResponse",
     "SyncAudiencesResponse",
+    "SyncGovernanceResponse",
     "SyncCatalogsResponse",
     "SyncCreativesResponse",
     "SyncEventSourcesResponse",
@@ -562,6 +563,44 @@ def fix_list_field_shadowing():
     print("  Fixed list field shadowing in get_property_list_response.py")
 
 
+def fix_reuse_model_discriminator_bug():
+    """Strip bogus ``source: Literal['reuse']`` subclasses.
+
+    datamodel-code-generator bug: when ``--reuse-model`` deduplicates inlined
+    copies of the same discriminated union, codegen emits subclasses like
+    ``class SignalIdN(Parent): source: Literal['reuse']``. Two such subclasses
+    collide on the literal ``'reuse'`` and pydantic rejects the union with
+    ``Value 'reuse' for discriminator mapped to multiple choices``.
+
+    Workaround: delete each bogus subclass and rewrite references to its
+    parent. Remove once koxudaxi/datamodel-code-generator#3092 is fixed.
+    """
+    print("Fixing Literal['reuse'] discriminator bug from --reuse-model...")
+
+    pattern = re.compile(
+        r"\n\s*class (\w+)\((\w+)\):\n\s*source: Literal\['reuse'\]\n",
+    )
+
+    total_fixes = 0
+    for py_file in OUTPUT_DIR.rglob("*.py"):
+        content = py_file.read_text()
+        mappings = pattern.findall(content)
+        if not mappings:
+            continue
+
+        content = pattern.sub("\n", content)
+        for child, parent in mappings:
+            content = re.sub(rf"\b{re.escape(child)}\b", parent, content)
+
+        py_file.write_text(content)
+        rel = py_file.relative_to(OUTPUT_DIR)
+        print(f"  {rel}: stripped {len(mappings)} bogus subclasses")
+        total_fixes += len(mappings)
+
+    if total_fixes == 0:
+        print("  No Literal['reuse'] subclasses found")
+
+
 def main():
     """Apply all post-generation fixes."""
     print("Applying post-generation fixes...")
@@ -576,6 +615,7 @@ def main():
     unwrap_rootmodel_unions()
     add_rootmodel_getattr_proxy()
     fix_list_field_shadowing()
+    fix_reuse_model_discriminator_bug()
 
     print("\n✓ Post-generation fixes complete\n")
 
diff --git a/scripts/sync_schemas.py b/scripts/sync_schemas.py
index dd15638ef..d5c9f3502 100755
--- a/scripts/sync_schemas.py
+++ b/scripts/sync_schemas.py
@@ -1,379 +1,253 @@
 #!/usr/bin/env python3
 """
-Sync AdCP JSON schemas from the authoritative public website.
+Sync AdCP JSON schemas from the authoritative protocol bundle.
 
-This script downloads AdCP schemas from https://adcontextprotocol.org/schemas/
-which is the canonical, versioned source of truth for AdCP schemas.
+Downloads a single gzipped tarball at
+https://adcontextprotocol.org/protocol/{version}.tgz, verifies the bundle
+against its SHA-256 sidecar, and extracts the `schemas/` tree into
+`schemas/cache/`. Replaces the prior per-file sync.
 
-Features:
-- Downloads from versioned public API (e.g., v1, v2)
-- Content-based change detection (only updates files when content changes)
-- Automatic cleanup of orphaned schemas (files removed upstream)
-- Preserves directory structure from upstream
+Pinned releases additionally ship Sigstore keyless sidecars (`.tgz.sig` +
+`.tgz.crt`). When present, this script shells out to `cosign verify-blob`
+to prove the bundle was built by the adcontextprotocol/adcp release
+workflow. Missing sidecars (e.g., `latest.tgz`, or releases that predate
+signing) fall back to checksum-only trust per the upstream client contract.
+
+The target version comes from `src/adcp/ADCP_VERSION`. If that version's
+bundle is not published, sync falls back to `latest.tgz` (the dev snapshot).
 
 Usage:
-    python scripts/sync_schemas.py          # Normal sync (uses content hashing)
-    python scripts/sync_schemas.py --force  # Force re-download all schemas
+    python scripts/sync_schemas.py
 """
 
 from __future__ import annotations
 
-import argparse
 import hashlib
-import json
+import io
+import os
+import shutil
+import subprocess
 import sys
+import tarfile
+import tempfile
 from pathlib import Path
-from urllib.error import URLError
+from urllib.error import HTTPError, URLError
 from urllib.request import Request, urlopen
 
+REPO_ROOT = Path(__file__).parent.parent
+CACHE_DIR = REPO_ROOT / "schemas" / "cache"
+VERSION_FILE = REPO_ROOT / "src" / "adcp" / "ADCP_VERSION"
+BUNDLE_BASE_URL = "https://adcontextprotocol.org/protocol"
+USER_AGENT = "adcp-python-sdk/3.0"
 
-def get_target_adcp_version() -> str:
-    """
-    Get the target AdCP version from ADCP_VERSION file.
-
-    Returns:
-        AdCP version string (e.g., "v1", "v2")
-    """
-    version_file = Path(__file__).parent.parent / "src" / "adcp" / "ADCP_VERSION"
-    if version_file.exists():
-        return version_file.read_text().strip()
-    return "v1"  # Fallback
-
+# Sigstore keyless verification identity. Must match the upstream release
+# workflow — see adcontextprotocol/adcp#2273.
+COSIGN_IDENTITY_REGEX = (
+    r"^https://github\.com/adcontextprotocol/adcp/"
+    r"\.github/workflows/release\.yml@refs/heads/.*$"
+)
+COSIGN_OIDC_ISSUER = "https://token.actions.githubusercontent.com"
 
-# Get target AdCP version
-TARGET_ADCP_VERSION = get_target_adcp_version()
-
-# Use authoritative public website as source
-ADCP_BASE_URL = "https://adcontextprotocol.org/schemas"
-SCHEMA_INDEX_URL = f"{ADCP_BASE_URL}/{TARGET_ADCP_VERSION}/index.json"
-CACHE_DIR = Path(__file__).parent.parent / "schemas" / "cache"
-HASH_CACHE_FILE = CACHE_DIR / ".hashes.json"
-
-
-def compute_hash(content: str) -> str:
-    """Compute SHA-256 hash of content."""
-    return hashlib.sha256(content.encode()).hexdigest()
-
-
-def load_hash_cache() -> dict[str, str]:
-    """Load cached hashes from disk."""
-    if HASH_CACHE_FILE.exists():
-        try:
-            with open(HASH_CACHE_FILE) as f:
-                return json.load(f)
-        except (json.JSONDecodeError, OSError):
-            return {}
-    return {}
 
+def get_target_adcp_version() -> str:
+    """Read target AdCP version from ADCP_VERSION file (e.g. "3.0.0-rc.3")."""
+    if VERSION_FILE.exists():
+        return VERSION_FILE.read_text().strip()
+    return "latest"
 
-def save_hash_cache(hash_cache: dict[str, str]) -> None:
-    """Save content hashes to disk."""
-    CACHE_DIR.mkdir(parents=True, exist_ok=True)
-    with open(HASH_CACHE_FILE, "w") as f:
-        json.dump(hash_cache, f, indent=2)
 
+def _http_get(url: str) -> bytes:
+    req = Request(url, headers={"User-Agent": USER_AGENT})
+    with urlopen(req) as response:
+        return response.read()
 
-def download_schema(url: str) -> dict:
-    """
-    Download a JSON schema from URL.
 
-    Returns:
-        Schema data as dict
-    """
+def _http_get_optional(url: str) -> bytes | None:
+    """GET returning None on 404 instead of raising."""
     try:
-        req = Request(url, headers={"User-Agent": "adcp-python-sdk/3.0"})
-        with urlopen(req) as response:
-            data = json.loads(response.read().decode())
-            return data
-
-    except URLError as e:
-        print(f"Error downloading {url}: {e}", file=sys.stderr)
+        return _http_get(url)
+    except HTTPError as exc:
+        if exc.code == 404:
+            return None
         raise
 
 
-def discover_schemas_from_index(index_data: dict) -> list[str]:
-    """
-    Discover all schema URLs from index.json.
-
-    The index contains references to all schemas organized by category.
-    We recursively extract all $ref paths and convert them to full URLs.
+def fetch_bundle(version: str) -> tuple[bytes, str]:
+    """Fetch the bundle and expected checksum for a version.
 
     Returns:
-        List of schema URLs
-    """
-    schema_urls = []
-
-    def extract_refs(obj: dict | list | str) -> None:
-        """Recursively extract all $ref values from nested structure."""
-        if isinstance(obj, dict):
-            if "$ref" in obj:
-                # Found a schema reference
-                # $ref paths are like "/schemas/2.4.0/core/package.json"
-                # Convert to full URL by prepending domain only
-                ref_path = obj["$ref"]
-                schema_url = f"https://adcontextprotocol.org{ref_path}"
-                schema_urls.append(schema_url)
-            # Recurse into nested objects
-            for value in obj.values():
-                extract_refs(value)
-        elif isinstance(obj, list):
-            # Recurse into lists
-            for item in obj:
-                extract_refs(item)
-
-    # Start extraction from schemas section
-    schemas = index_data.get("schemas", {})
-    extract_refs(schemas)
-
-    return schema_urls
-
-
-def download_schema_file(
-    url: str, hash_cache: dict[str, str], force: bool = False
-) -> tuple[bool, str | None]:
+        (tgz_bytes, expected_sha256_hex)
     """
-    Download a schema and save it to cache, using content hashing for change detection.
-    Preserves directory structure from URL path.
+    tgz_bytes = _http_get(f"{BUNDLE_BASE_URL}/{version}.tgz")
+    sha_text = _http_get(f"{BUNDLE_BASE_URL}/{version}.tgz.sha256").decode()
+    expected = sha_text.split()[0].strip().lower()
+    return tgz_bytes, expected
+
+
+def fetch_bundle_with_fallback(version: str) -> tuple[bytes, str, str]:
+    """Fetch a pinned bundle; fall back to `latest` if not published yet.
 
     Returns:
-        Tuple of (was_updated, new_hash)
+        (tgz_bytes, expected_sha256_hex, effective_version)
     """
-    # Extract path from URL
-    # URL format: https://adcontextprotocol.org/schemas/2.4.0/core/package.json
-    # We want to extract: core/package.json
-    # The URL from index has full path including version number
-    url_path = url.replace(f"{ADCP_BASE_URL}/", "")
-    # Split and skip the version part (e.g., "2.4.0" or "v1")
-    parts = url_path.split("/")
-    if len(parts) > 1:
-        # Skip first part (version), keep rest
-        url_parts = parts[1:]
-    else:
-        url_parts = parts
-
-    # Create subdirectories if needed (directly in CACHE_DIR)
-    if len(url_parts) > 1:
-        subdir = CACHE_DIR / Path(*url_parts[:-1])
-        subdir.mkdir(parents=True, exist_ok=True)
-        output_path = subdir / url_parts[-1]
-        display_name = "/".join(url_parts)
-    else:
-        CACHE_DIR.mkdir(parents=True, exist_ok=True)
-        output_path = CACHE_DIR / url_parts[0]
-        display_name = url_parts[0]
-
-    # Download schema
     try:
-        schema = download_schema(url)
-
-        # Normalize JSON output for consistent hashing
-        content = json.dumps(schema, indent=2, sort_keys=True)
-        new_hash = compute_hash(content)
-
-        # Check if content changed
-        if not force and output_path.exists():
-            cached_hash = hash_cache.get(url)
+        data, sha = fetch_bundle(version)
+        return data, sha, version
+    except HTTPError as exc:
+        if exc.code != 404 or version == "latest":
+            raise
+        print(f"  ! {version}.tgz not published yet; falling back to latest.tgz")
+        data, sha = fetch_bundle("latest")
+        return data, sha, "latest"
 
-            if cached_hash == new_hash:
-                # Content unchanged
-                print(f"  ✓ {display_name} (unchanged)")
-                return False, new_hash
 
-            # Content changed
-            with open(output_path, "w") as f:
-                f.write(content)
-            print(f"  ↻ {display_name} (updated)")
-            return True, new_hash
+def fetch_signature_sidecars(version: str) -> tuple[bytes | None, bytes | None]:
+    """Fetch Sigstore `.sig` and `.crt` sidecars for a version.
 
-        # New file or forced download
-        with open(output_path, "w") as f:
-            f.write(content)
-
-        status = "downloaded" if not output_path.exists() else "forced update"
-        print(f"  ✓ {display_name} ({status})")
-        return True, new_hash
+    Returns:
+        (sig_bytes, crt_bytes), or (None, None) if either sidecar is missing.
+    """
+    sig = _http_get_optional(f"{BUNDLE_BASE_URL}/{version}.tgz.sig")
+    crt = _http_get_optional(f"{BUNDLE_BASE_URL}/{version}.tgz.crt")
+    if sig is None or crt is None:
+        return None, None
+    return sig, crt
 
-    except Exception as e:
-        print(f"  ✗ {display_name} (failed: {e})", file=sys.stderr)
-        return False, None
 
+def verify_cosign_signature(
+    tgz_bytes: bytes, sig_bytes: bytes, crt_bytes: bytes
+) -> None:
+    """Verify the bundle with `cosign verify-blob`.
 
-def discover_transitive_refs(schema: dict) -> list[str]:
+    Raises RuntimeError if cosign is not installed or verification fails.
     """
-    Extract all $ref URLs from a schema document.
-
-    This finds schemas referenced by this schema, allowing us to follow
-    the transitive closure of dependencies.
-
-    Returns:
-        List of full URLs referenced by this schema
+    if shutil.which("cosign") is None:
+        raise RuntimeError(
+            "Bundle has Sigstore signature sidecars but `cosign` is not installed.\n"
+            "  Install: https://docs.sigstore.dev/cosign/installation/\n"
+            "  Or set ADCP_SKIP_SIGNATURE=1 to trust the SHA-256 checksum only."
+        )
+
+    with tempfile.TemporaryDirectory() as tmp:
+        tgz_path = Path(tmp) / "bundle.tgz"
+        sig_path = Path(tmp) / "bundle.tgz.sig"
+        crt_path = Path(tmp) / "bundle.tgz.crt"
+        tgz_path.write_bytes(tgz_bytes)
+        sig_path.write_bytes(sig_bytes)
+        crt_path.write_bytes(crt_bytes)
+
+        result = subprocess.run(
+            [
+                "cosign",
+                "verify-blob",
+                "--signature",
+                str(sig_path),
+                "--certificate",
+                str(crt_path),
+                "--certificate-identity-regexp",
+                COSIGN_IDENTITY_REGEX,
+                "--certificate-oidc-issuer",
+                COSIGN_OIDC_ISSUER,
+                str(tgz_path),
+            ],
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+
+    if result.returncode != 0:
+        raise RuntimeError(
+            "Cosign signature verification failed.\n"
+            f"  stdout: {result.stdout.strip()}\n"
+            f"  stderr: {result.stderr.strip()}"
+        )
+
+
+def replace_cache_from_bundle(tgz_bytes: bytes, effective_version: str) -> int:
+    """Extract the bundle's `schemas/` tree into CACHE_DIR, replacing its contents.
+
+    Returns the number of files written.
     """
-    refs = []
-
-    def extract_refs(obj: dict | list | str) -> None:
-        if isinstance(obj, dict):
-            if "$ref" in obj:
-                ref_path = obj["$ref"]
-                # Convert relative refs like "../core/context.json" to full URLs
-                if ref_path.startswith("../") or ref_path.startswith("./"):
-                    # These will be fixed by fix_schema_refs.py later
-                    # For now, try to resolve to absolute path
-                    # Assume these are relative to schemas/VERSION/
-                    pass
-                elif ref_path.startswith("/schemas/"):
-                    # Absolute schema path
-                    refs.append(f"https://adcontextprotocol.org{ref_path}")
-            for value in obj.values():
-                extract_refs(value)
-        elif isinstance(obj, list):
-            for item in obj:
-                extract_refs(item)
-
-    extract_refs(schema)
-    return refs
-
-
-def main():
-    """Main entry point."""
-    parser = argparse.ArgumentParser(
-        description="Sync AdCP schemas from GitHub",
-        formatter_class=argparse.RawDescriptionHelpFormatter,
-    )
-    parser.add_argument(
-        "--force",
-        action="store_true",
-        help="Force re-download all schemas, ignoring content hashes",
-    )
-    args = parser.parse_args()
-
-    print(f"Syncing AdCP schemas from {ADCP_BASE_URL}...")
-    print(f"Target version: {TARGET_ADCP_VERSION}")
-    print(f"Cache directory: {CACHE_DIR}")
-    print(f"Mode: {'FORCE' if args.force else 'NORMAL (using content hashing)'}\n")
+    with tempfile.TemporaryDirectory() as tmpdir:
+        with tarfile.open(fileobj=io.BytesIO(tgz_bytes), mode="r:gz") as tf:
+            tf.extractall(tmpdir, filter="data")
 
-    try:
-        # Load hash cache
-        hash_cache = {} if args.force else load_hash_cache()
-        updated_hashes = {}
-
-        # Download index to get schema list
-        print("Fetching schema index...")
-        try:
-            index_schema = download_schema(SCHEMA_INDEX_URL)
+        bundle_root = Path(tmpdir) / f"adcp-{effective_version}"
+        schemas_src = bundle_root / "schemas"
+        if not schemas_src.is_dir():
+            raise RuntimeError(
+                f"Bundle missing expected directory: adcp-{effective_version}/schemas/"
+            )
 
-            # Compute hash for index
-            index_content = json.dumps(index_schema, indent=2, sort_keys=True)
-            index_hash = compute_hash(index_content)
-            updated_hashes[SCHEMA_INDEX_URL] = index_hash
+        if CACHE_DIR.exists():
+            shutil.rmtree(CACHE_DIR)
+        CACHE_DIR.parent.mkdir(parents=True, exist_ok=True)
+        shutil.copytree(schemas_src, CACHE_DIR)
 
-            print("Schema index retrieved\n")
-        except Exception as e:
-            print(f"Error: Could not fetch index.json from {SCHEMA_INDEX_URL}")
-            print(f"Details: {e}\n")
-            sys.exit(1)
+        return sum(1 for _ in CACHE_DIR.rglob("*") if _.is_file())
 
-        # Discover all schemas from index
-        print("Discovering schemas from index...")
-        schema_urls = set(discover_schemas_from_index(index_schema))
 
-        print(f"Found {len(schema_urls)} schemas in index")
-        print("Checking for transitive dependencies...\n")
+def main() -> None:
+    target_version = get_target_adcp_version()
+    print(f"Syncing AdCP schema bundle from {BUNDLE_BASE_URL}...")
+    print(f"Target version: {target_version}")
+    print(f"Cache directory: {CACHE_DIR}\n")
 
-        # Follow transitive dependencies
-        # Download schemas and check for additional refs
-        processed = set()
-        to_process = list(schema_urls)
+    try:
+        print(f"Fetching {target_version}.tgz + checksum...")
+        tgz_bytes, expected_sha, effective_version = fetch_bundle_with_fallback(
+            target_version
+        )
+    except (HTTPError, URLError) as exc:
+        print(f"\n✗ Failed to download bundle: {exc}", file=sys.stderr)
+        sys.exit(1)
 
-        while to_process:
-            url = to_process.pop(0)
-            if url in processed:
-                continue
+    actual_sha = hashlib.sha256(tgz_bytes).hexdigest()
+    if actual_sha != expected_sha:
+        print(
+            f"\n✗ Checksum mismatch for adcp-{effective_version}.tgz:\n"
+            f"  expected: {expected_sha}\n"
+            f"  actual:   {actual_sha}",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+    print(f"  ✓ Checksum verified ({actual_sha[:12]}…, {len(tgz_bytes):,} bytes)")
 
-            processed.add(url)
+    if os.environ.get("ADCP_SKIP_SIGNATURE") == "1":
+        print("  ! Skipping Sigstore verification (ADCP_SKIP_SIGNATURE=1)")
+    else:
+        try:
+            sig_bytes, crt_bytes = fetch_signature_sidecars(effective_version)
+        except (HTTPError, URLError) as exc:
+            print(f"\n✗ Failed to fetch signature sidecars: {exc}", file=sys.stderr)
+            sys.exit(1)
 
+        if sig_bytes is None or crt_bytes is None:
+            print(
+                f"  ! No Sigstore sidecars for adcp-{effective_version} "
+                "(checksum-only trust)"
+            )
+        else:
             try:
-                schema = download_schema(url)
-                # Find any additional schemas this one references
-                new_refs = discover_transitive_refs(schema)
-                for ref_url in new_refs:
-                    if ref_url not in processed and ref_url not in to_process:
-                        to_process.append(ref_url)
-                        schema_urls.add(ref_url)
-            except Exception:
-                # If we can't download, we'll catch it in the main download loop
-                pass
-
-        # Remove duplicates and sort
-        schema_urls = sorted(schema_urls)
-
-        print(f"Found {len(schema_urls)} total schemas (including dependencies)\n")
-
-        # Download all schemas
-        print("Downloading schemas:")
-        updated_count = 0
-        cached_count = 0
-        removed_count = 0
-
-        for url in schema_urls:
-            was_updated, new_hash = download_schema_file(url, hash_cache, force=args.force)
-
-            if was_updated:
-                updated_count += 1
-            else:
-                cached_count += 1
-
-            if new_hash:
-                updated_hashes[url] = new_hash
-
-        # Clean up orphaned schemas (files that exist locally but not upstream)
-        if CACHE_DIR.exists():
-            # Get list of expected filenames from URLs
-            expected_files = {url.split("/")[-1] for url in schema_urls}
-            # Also allow the hash cache file
-            expected_files.add(".hashes.json")
-
-            # Find orphaned JSON files
-            orphaned_files = []
-            for json_file in CACHE_DIR.rglob("*.json"):
-                if json_file.name not in expected_files and json_file.name != ".hashes.json":
-                    orphaned_files.append(json_file)
-
-            # Remove orphaned files
-            if orphaned_files:
-                print("\nCleaning up orphaned schemas:")
-                for orphan in orphaned_files:
-                    rel_path = orphan.relative_to(CACHE_DIR)
-                    print(f"  ✗ {rel_path} (removed - no longer in upstream)")
-                    orphan.unlink()
-                    removed_count += 1
-
-                    # Remove empty directories
-                    parent = orphan.parent
-                    try:
-                        if parent != CACHE_DIR and not any(parent.iterdir()):
-                            parent.rmdir()
-                    except OSError:
-                        pass
-
-        # Save updated hash cache
-        if updated_hashes:
-            save_hash_cache(updated_hashes)
-
-        print(f"\n✓ Successfully synced {len(schema_urls)} schemas")
-        print(f"  Target AdCP version: {TARGET_ADCP_VERSION}")
-        print(f"  Location: {CACHE_DIR}")
-        print(f"  Updated: {updated_count}")
-        print(f"  Cached: {cached_count}")
-        if removed_count > 0:
-            print(f"  Removed: {removed_count} (orphaned)")
-
-    except Exception as e:
-        print(f"\n✗ Error syncing schemas: {e}", file=sys.stderr)
-        import traceback
-
-        traceback.print_exc()
+                verify_cosign_signature(tgz_bytes, sig_bytes, crt_bytes)
+            except RuntimeError as exc:
+                print(f"\n✗ {exc}", file=sys.stderr)
+                sys.exit(1)
+            print(
+                "  ✓ Sigstore signature verified "
+                "(issued to adcontextprotocol/adcp release workflow)"
+            )
+
+    try:
+        file_count = replace_cache_from_bundle(tgz_bytes, effective_version)
+    except (tarfile.TarError, RuntimeError) as exc:
+        print(f"\n✗ Failed to extract bundle: {exc}", file=sys.stderr)
         sys.exit(1)
 
+    print(f"\n✓ Successfully synced {file_count} schema files")
+    print(f"  Effective version: adcp-{effective_version}")
+    print(f"  Location: {CACHE_DIR}")
+
 
 if __name__ == "__main__":
     main()
diff --git a/src/adcp/ADCP_VERSION b/src/adcp/ADCP_VERSION
index c7c384b3f..a0f9a4b4b 100644
--- a/src/adcp/ADCP_VERSION
+++ b/src/adcp/ADCP_VERSION
@@ -1 +1 @@
-3.0.0-rc.3
+latest
diff --git a/src/adcp/__init__.py b/src/adcp/__init__.py
index dfe8627e7..939c44fc4 100644
--- a/src/adcp/__init__.py
+++ b/src/adcp/__init__.py
@@ -196,9 +196,7 @@
     Package,
     PackageRequest,
     PaginationRequest,
-    PreviewCreativeFormatRequest,
     PreviewCreativeInteractiveResponse,
-    PreviewCreativeManifestRequest,
     PreviewCreativeRequest,
     PreviewCreativeResponse,
     PreviewCreativeStaticResponse,
@@ -220,7 +218,6 @@
     ReportUsageResponse,
     SignalCatalogType,
     SignalFilters,
-    SignalPricing,
     SignalPricingOption,
     Snapshot,
     SnapshotUnavailableReason,
@@ -280,14 +277,12 @@
     BuildCreativeSuccessResponse,
     CalibrateContentErrorResponse,
     CalibrateContentSuccessResponse,
-    CpmSignalPricingOption,
     CreateContentStandardsErrorResponse,
     CreateContentStandardsSuccessResponse,
     CreateMediaBuyErrorResponse,
     CreateMediaBuySuccessResponse,
     Deployment,
     Destination,
-    FlatFeeSignalPricingOption,
     GetAccountFinancialsErrorResponse,
     GetAccountFinancialsSuccessResponse,
     GetBrandIdentityErrorResponse,
@@ -316,14 +311,10 @@
     ListContentStandardsSuccessResponse,
     LogEventErrorResponse,
     LogEventSuccessResponse,
-    PercentOfMediaSignalPricingOption,
     PlatformDeployment,
     PlatformDestination,
-    PreviewCreativeBatchRequest,
     PreviewCreativeBatchResponse,
-    PreviewCreativeSingleRequest,
     PreviewCreativeSingleResponse,
-    PreviewCreativeVariantRequest,
     PreviewCreativeVariantResponse,
     PricingOption,
     PropertyId,
@@ -670,11 +661,7 @@ def get_adcp_version() -> str:
     "TimeUnit",
     "VcpmPricingOption",
     # Signal pricing types
-    "SignalPricing",
     "SignalPricingOption",
-    "CpmSignalPricingOption",
-    "FlatFeeSignalPricingOption",
-    "PercentOfMediaSignalPricingOption",
     # Configuration types
     "PushNotificationConfig",
     # Adagents validation
@@ -783,11 +770,8 @@ def get_adcp_version() -> str:
     "LogEventErrorResponse",
     "PlatformDeployment",
     "PlatformDestination",
-    "PreviewCreativeBatchRequest",
     "PreviewCreativeBatchResponse",
-    "PreviewCreativeSingleRequest",
     "PreviewCreativeSingleResponse",
-    "PreviewCreativeVariantRequest",
     "PreviewCreativeVariantResponse",
     "PricingOption",
     "PropertyId",
@@ -837,9 +821,7 @@ def get_adcp_version() -> str:
     "PropertyIdActivationKey",
     "PropertyTagActivationKey",
     # Backward compat: preview alias renames
-    "PreviewCreativeFormatRequest",
     "PreviewCreativeInteractiveResponse",
-    "PreviewCreativeManifestRequest",
     "PreviewCreativeStaticResponse",
     # Backward compat: types removed from upstream schemas
 ]
diff --git a/src/adcp/__main__.py b/src/adcp/__main__.py
index 6a0bcafb8..51ad02f18 100644
--- a/src/adcp/__main__.py
+++ b/src/adcp/__main__.py
@@ -269,6 +269,26 @@ def _ta(tp: Any) -> TypeAdapter[Any]:
         "list_property_lists": ("list_property_lists", _ta(gen.ListPropertyListsRequest)),
         "update_property_list": ("update_property_list", _ta(gen.UpdatePropertyListRequest)),
         "delete_property_list": ("delete_property_list", _ta(gen.DeletePropertyListRequest)),
+        # V3 Governance (Collection Lists)
+        "create_collection_list": (
+            "create_collection_list",
+            _ta(gen.CreateCollectionListRequest),
+        ),
+        "get_collection_list": ("get_collection_list", _ta(gen.GetCollectionListRequest)),
+        "list_collection_lists": (
+            "list_collection_lists",
+            _ta(gen.ListCollectionListsRequest),
+        ),
+        "update_collection_list": (
+            "update_collection_list",
+            _ta(gen.UpdateCollectionListRequest),
+        ),
+        "delete_collection_list": (
+            "delete_collection_list",
+            _ta(gen.DeleteCollectionListRequest),
+        ),
+        # V3 Governance (Sync Governance)
+        "sync_governance": ("sync_governance", _ta(gen.SyncGovernanceRequest)),
         # V3 TMP
         "context_match": ("context_match", _ta(gen.ContextMatchRequest)),
         "identity_match": ("identity_match", _ta(gen.IdentityMatchRequest)),
diff --git a/src/adcp/capabilities.py b/src/adcp/capabilities.py
index 0284d3415..9b127f10b 100644
--- a/src/adcp/capabilities.py
+++ b/src/adcp/capabilities.py
@@ -25,10 +25,10 @@
 # Used by validate_capabilities() to check handler/feature consistency.
 TASK_FEATURE_MAP: dict[str, str] = {
     # Conversion tracking
-    "sync_event_sources": "conversion_tracking",
-    "log_event": "conversion_tracking",
+    "sync_event_sources": "property_list_filtering",
+    "log_event": "property_list_filtering",
     # Audience targeting
-    "sync_audiences": "audience_targeting",
+    "sync_audiences": "inline_creative_management",
     # Catalog management
     "sync_catalogs": "catalog_management",
     # Content standards
@@ -122,7 +122,7 @@ class FeatureResolver:
     - Extension support: ``"ext:scope3"`` checks ``extensions_supported``
     - Targeting: ``"targeting.geo_countries"`` checks
       ``media_buy.execution.targeting``
-    - Media buy features: ``"audience_targeting"`` checks
+    - Media buy features: ``"inline_creative_management"`` checks
       ``media_buy.features``
     - Signals features: ``"catalog_signals"`` checks
       ``signals.features``
diff --git a/src/adcp/client.py b/src/adcp/client.py
index 3c691a962..cfbcba880 100644
--- a/src/adcp/client.py
+++ b/src/adcp/client.py
@@ -75,6 +75,14 @@
     TaskResult,
     TaskStatus,
 )
+
+# V3 Governance (Sync Governance) types
+from adcp.types.generated_poc.account.sync_governance_request import (
+    SyncGovernanceRequest,
+)
+from adcp.types.generated_poc.account.sync_governance_response import (
+    SyncGovernanceResponse,
+)
 from adcp.types.generated_poc.brand.acquire_rights_request import AcquireRightsRequest
 from adcp.types.generated_poc.brand.acquire_rights_response import (
     AcquireRightsResponse,
@@ -87,6 +95,38 @@
 )
 from adcp.types.generated_poc.brand.get_rights_request import GetRightsRequest
 from adcp.types.generated_poc.brand.get_rights_response import GetRightsResponse
+
+# V3 Governance (Collection Lists) types
+from adcp.types.generated_poc.collection.create_collection_list_request import (
+    CreateCollectionListRequest,
+)
+from adcp.types.generated_poc.collection.create_collection_list_response import (
+    CreateCollectionListResponse,
+)
+from adcp.types.generated_poc.collection.delete_collection_list_request import (
+    DeleteCollectionListRequest,
+)
+from adcp.types.generated_poc.collection.delete_collection_list_response import (
+    DeleteCollectionListResponse,
+)
+from adcp.types.generated_poc.collection.get_collection_list_request import (
+    GetCollectionListRequest,
+)
+from adcp.types.generated_poc.collection.get_collection_list_response import (
+    GetCollectionListResponse,
+)
+from adcp.types.generated_poc.collection.list_collection_lists_request import (
+    ListCollectionListsRequest,
+)
+from adcp.types.generated_poc.collection.list_collection_lists_response import (
+    ListCollectionListsResponse,
+)
+from adcp.types.generated_poc.collection.update_collection_list_request import (
+    UpdateCollectionListRequest,
+)
+from adcp.types.generated_poc.collection.update_collection_list_response import (
+    UpdateCollectionListResponse,
+)
 from adcp.types.generated_poc.compliance.comply_test_controller_request import (
     ComplyTestControllerRequest,
 )
@@ -2375,6 +2415,262 @@ async def delete_property_list(
 
         return self.adapter._parse_response(raw_result, DeletePropertyListResponse)
 
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Collection Lists)
+    # ========================================================================
+
+    async def create_collection_list(
+        self,
+        request: CreateCollectionListRequest,
+    ) -> TaskResult[CreateCollectionListResponse]:
+        """Create a collection list for governance filtering.
+
+        Collection lists define dynamic sets of collections (properties, segments, etc.)
+        that can be referenced by authorization rules and audience scoping.
+
+        Args:
+            request: Request parameters for creating the collection list
+
+        Returns:
+            TaskResult containing CreateCollectionListResponse with list_id
+        """
+        operation_id = create_operation_id()
+        params = request.model_dump(mode="json", exclude_none=True)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_REQUEST,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="create_collection_list",
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        raw_result = await self.adapter.create_collection_list(params)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_RESPONSE,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="create_collection_list",
+                status=raw_result.status,
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        return self.adapter._parse_response(raw_result, CreateCollectionListResponse)
+
+    async def get_collection_list(
+        self,
+        request: GetCollectionListRequest,
+    ) -> TaskResult[GetCollectionListResponse]:
+        """Get a collection list with optional resolution.
+
+        When resolve=true, returns the resolved members of the collection list.
+
+        Args:
+            request: Request parameters including list_id and resolve flag
+
+        Returns:
+            TaskResult containing GetCollectionListResponse
+        """
+        operation_id = create_operation_id()
+        params = request.model_dump(mode="json", exclude_none=True)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_REQUEST,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="get_collection_list",
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        raw_result = await self.adapter.get_collection_list(params)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_RESPONSE,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="get_collection_list",
+                status=raw_result.status,
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        return self.adapter._parse_response(raw_result, GetCollectionListResponse)
+
+    async def list_collection_lists(
+        self,
+        request: ListCollectionListsRequest,
+    ) -> TaskResult[ListCollectionListsResponse]:
+        """List collection lists owned by a principal.
+
+        Args:
+            request: Request parameters with optional filtering
+
+        Returns:
+            TaskResult containing ListCollectionListsResponse
+        """
+        operation_id = create_operation_id()
+        params = request.model_dump(mode="json", exclude_none=True)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_REQUEST,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="list_collection_lists",
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        raw_result = await self.adapter.list_collection_lists(params)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_RESPONSE,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="list_collection_lists",
+                status=raw_result.status,
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        return self.adapter._parse_response(raw_result, ListCollectionListsResponse)
+
+    async def update_collection_list(
+        self,
+        request: UpdateCollectionListRequest,
+    ) -> TaskResult[UpdateCollectionListResponse]:
+        """Update a collection list.
+
+        Args:
+            request: Request parameters with list_id and updates
+
+        Returns:
+            TaskResult containing UpdateCollectionListResponse
+        """
+        operation_id = create_operation_id()
+        params = request.model_dump(mode="json", exclude_none=True)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_REQUEST,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="update_collection_list",
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        raw_result = await self.adapter.update_collection_list(params)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_RESPONSE,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="update_collection_list",
+                status=raw_result.status,
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        return self.adapter._parse_response(raw_result, UpdateCollectionListResponse)
+
+    async def delete_collection_list(
+        self,
+        request: DeleteCollectionListRequest,
+    ) -> TaskResult[DeleteCollectionListResponse]:
+        """Delete a collection list.
+
+        Args:
+            request: Request parameters with list_id
+
+        Returns:
+            TaskResult containing DeleteCollectionListResponse
+        """
+        operation_id = create_operation_id()
+        params = request.model_dump(mode="json", exclude_none=True)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_REQUEST,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="delete_collection_list",
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        raw_result = await self.adapter.delete_collection_list(params)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_RESPONSE,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="delete_collection_list",
+                status=raw_result.status,
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        return self.adapter._parse_response(raw_result, DeleteCollectionListResponse)
+
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Sync Governance)
+    # ========================================================================
+
+    async def sync_governance(
+        self,
+        request: SyncGovernanceRequest,
+    ) -> TaskResult[SyncGovernanceResponse]:
+        """Sync governance agents attached to an account.
+
+        Attach, detach, or replace the set of governance agents that must be
+        consulted for plan approval on an account.
+
+        Args:
+            request: Request parameters with account and governance agents
+
+        Returns:
+            TaskResult containing SyncGovernanceResponse
+        """
+        operation_id = create_operation_id()
+        params = request.model_dump(mode="json", exclude_none=True)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_REQUEST,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="sync_governance",
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        raw_result = await self.adapter.sync_governance(params)
+
+        self._emit_activity(
+            Activity(
+                type=ActivityType.PROTOCOL_RESPONSE,
+                operation_id=operation_id,
+                agent_id=self.agent_config.id,
+                task_type="sync_governance",
+                status=raw_result.status,
+                timestamp=datetime.now(timezone.utc).isoformat(),
+            )
+        )
+
+        return self.adapter._parse_response(raw_result, SyncGovernanceResponse)
+
     # ========================================================================
     # V3 Protocol Methods - Temporal Matching Protocol (TMP)
     # ========================================================================
diff --git a/src/adcp/protocols/a2a.py b/src/adcp/protocols/a2a.py
index 93e8b5ead..0a16bc539 100644
--- a/src/adcp/protocols/a2a.py
+++ b/src/adcp/protocols/a2a.py
@@ -734,6 +734,38 @@ async def delete_property_list(self, params: dict[str, Any]) -> TaskResult[Any]:
         """Delete a property list."""
         return await self._call_a2a_tool("delete_property_list", params)
 
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Collection Lists)
+    # ========================================================================
+
+    async def create_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Create a collection list for governance."""
+        return await self._call_a2a_tool("create_collection_list", params)
+
+    async def get_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Get a collection list with optional resolution."""
+        return await self._call_a2a_tool("get_collection_list", params)
+
+    async def list_collection_lists(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """List collection lists."""
+        return await self._call_a2a_tool("list_collection_lists", params)
+
+    async def update_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Update a collection list."""
+        return await self._call_a2a_tool("update_collection_list", params)
+
+    async def delete_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Delete a collection list."""
+        return await self._call_a2a_tool("delete_collection_list", params)
+
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Sync Governance)
+    # ========================================================================
+
+    async def sync_governance(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Sync governance agents attached to an account."""
+        return await self._call_a2a_tool("sync_governance", params)
+
     # ========================================================================
     # V3 Protocol Methods - TMP
     # ========================================================================
diff --git a/src/adcp/protocols/base.py b/src/adcp/protocols/base.py
index cb548483f..e0b457b6b 100644
--- a/src/adcp/protocols/base.py
+++ b/src/adcp/protocols/base.py
@@ -369,6 +369,44 @@ async def delete_property_list(self, params: dict[str, Any]) -> TaskResult[Any]:
         """Delete a property list."""
         pass
 
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Collection Lists)
+    # ========================================================================
+
+    @abstractmethod
+    async def create_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Create a collection list for governance."""
+        pass
+
+    @abstractmethod
+    async def get_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Get a collection list with optional resolution."""
+        pass
+
+    @abstractmethod
+    async def list_collection_lists(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """List collection lists."""
+        pass
+
+    @abstractmethod
+    async def update_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Update a collection list."""
+        pass
+
+    @abstractmethod
+    async def delete_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Delete a collection list."""
+        pass
+
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Sync Governance)
+    # ========================================================================
+
+    @abstractmethod
+    async def sync_governance(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Sync governance agents attached to an account."""
+        pass
+
     # ========================================================================
     # V3 Protocol Methods - Temporal Matching Protocol (TMP)
     # ========================================================================
diff --git a/src/adcp/protocols/mcp.py b/src/adcp/protocols/mcp.py
index b0d4ee113..5df4f65f4 100644
--- a/src/adcp/protocols/mcp.py
+++ b/src/adcp/protocols/mcp.py
@@ -663,6 +663,38 @@ async def delete_property_list(self, params: dict[str, Any]) -> TaskResult[Any]:
         """Delete a property list."""
         return await self._call_mcp_tool("delete_property_list", params)
 
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Collection Lists)
+    # ========================================================================
+
+    async def create_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Create a collection list for governance."""
+        return await self._call_mcp_tool("create_collection_list", params)
+
+    async def get_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Get a collection list with optional resolution."""
+        return await self._call_mcp_tool("get_collection_list", params)
+
+    async def list_collection_lists(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """List collection lists."""
+        return await self._call_mcp_tool("list_collection_lists", params)
+
+    async def update_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Update a collection list."""
+        return await self._call_mcp_tool("update_collection_list", params)
+
+    async def delete_collection_list(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Delete a collection list."""
+        return await self._call_mcp_tool("delete_collection_list", params)
+
+    # ========================================================================
+    # V3 Protocol Methods - Governance (Sync Governance)
+    # ========================================================================
+
+    async def sync_governance(self, params: dict[str, Any]) -> TaskResult[Any]:
+        """Sync governance agents attached to an account."""
+        return await self._call_mcp_tool("sync_governance", params)
+
     # ========================================================================
     # V3 Protocol Methods - TMP
     # ========================================================================
diff --git a/src/adcp/types/__init__.py b/src/adcp/types/__init__.py
index 165e65ce0..0bd75cf0f 100644
--- a/src/adcp/types/__init__.py
+++ b/src/adcp/types/__init__.py
@@ -308,7 +308,6 @@
     Signal,
     SignalCatalogType,
     SignalFilters,
-    SignalPricing,
     SignalPricingOption,
     SiIdentity,
     SiInitiateSessionRequest,
@@ -405,25 +404,16 @@
     CalibrateContentSuccessResponse,
     CatalogGroupBinding,
     ComplyErrorResponse,
-    ComplyForceAccountStatusRequest,
-    ComplyForceCreativeStatusRequest,
-    ComplyForceMediaBuyStatusRequest,
-    ComplyForceSessionStatusRequest,
-    ComplyListScenariosRequest,
     ComplyListScenariosResponse,
-    ComplySimulateBudgetSpendRequest,
-    ComplySimulateDeliveryRequest,
     ComplySimulationResponse,
     ComplyStateTransitionResponse,
     ConsentBasis,
-    CpmSignalPricingOption,
     CreateContentStandardsErrorResponse,
     CreateContentStandardsSuccessResponse,
     CreateMediaBuyErrorResponse,
     CreateMediaBuySuccessResponse,
     Deployment,
     Destination,
-    FlatFeeSignalPricingOption,
     GetAccountFinancialsErrorResponse,
     GetAccountFinancialsSuccessResponse,
     GetBrandIdentityErrorResponse,
@@ -455,14 +445,10 @@
     LogEventErrorResponse,
     LogEventSuccessResponse,
     MediaBuyDeliveryStatus,
-    PercentOfMediaSignalPricingOption,
     PlatformDeployment,
     PlatformDestination,
-    PreviewCreativeBatchRequest,
     PreviewCreativeBatchResponse,
-    PreviewCreativeSingleRequest,
     PreviewCreativeSingleResponse,
-    PreviewCreativeVariantRequest,
     PreviewCreativeVariantResponse,
     PricingOption,
     PropertyId,
@@ -612,9 +598,8 @@ def __init__(self, *args: object, **kwargs: object) -> None:
         )
 
 
-# Preview alias renames: format/manifest → single/batch/variant discriminator
-PreviewCreativeFormatRequest = PreviewCreativeSingleRequest
-PreviewCreativeManifestRequest = PreviewCreativeBatchRequest
+# Preview response rename aliases (per-mode Request variants were removed when
+# PreviewCreativeRequest collapsed to a single class with a request_type enum).
 PreviewCreativeStaticResponse = PreviewCreativeSingleResponse
 PreviewCreativeInteractiveResponse = PreviewCreativeBatchResponse
 
@@ -908,11 +893,7 @@ def __init__(self, *args: object, **kwargs: object) -> None:
     "Results",
     "Signal",
     "SignalFilters",
-    "SignalPricing",
     "SignalPricingOption",
-    "CpmSignalPricingOption",
-    "FlatFeeSignalPricingOption",
-    "PercentOfMediaSignalPricingOption",
     "Snapshot",
     "SnapshotUnavailableReason",
     "Tags",
@@ -1059,11 +1040,8 @@ def __init__(self, *args: object, **kwargs: object) -> None:
     "LogEventSuccessResponse",
     "PlatformDeployment",
     "PlatformDestination",
-    "PreviewCreativeBatchRequest",
     "PreviewCreativeBatchResponse",
-    "PreviewCreativeSingleRequest",
     "PreviewCreativeSingleResponse",
-    "PreviewCreativeVariantRequest",
     "PreviewCreativeVariantResponse",
     "PricingOption",
     "PropertyId",
@@ -1113,14 +1091,7 @@ def __init__(self, *args: object, **kwargs: object) -> None:
     "GetBrandIdentityErrorResponse",
     "GetRightsSuccessResponse",
     "GetRightsErrorResponse",
-    # Compliance Test Controller aliases
-    "ComplyListScenariosRequest",
-    "ComplyForceCreativeStatusRequest",
-    "ComplyForceAccountStatusRequest",
-    "ComplyForceMediaBuyStatusRequest",
-    "ComplyForceSessionStatusRequest",
-    "ComplySimulateDeliveryRequest",
-    "ComplySimulateBudgetSpendRequest",
+    # Compliance Test Controller response aliases
     "ComplyListScenariosResponse",
     "ComplyStateTransitionResponse",
     "ComplySimulationResponse",
diff --git a/src/adcp/types/_ergonomic.py b/src/adcp/types/_ergonomic.py
index f2d9cd810..c6843d7d7 100644
--- a/src/adcp/types/_ergonomic.py
+++ b/src/adcp/types/_ergonomic.py
@@ -106,11 +106,11 @@ def _apply_coercion() -> None:
     """
     # Apply coercion to ListCreativeFormatsRequest
     # - asset_types: list[AssetContentType | str] | None
-    # - context: ContextObject | dict | None
-    # - disclosure_persistence: list[DisclosurePersistence | str] | None
+    # - wcag_level: WcagLevel | str | None
     # - disclosure_positions: list[DisclosurePosition | str] | None
+    # - disclosure_persistence: list[DisclosurePersistence | str] | None
+    # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - wcag_level: WcagLevel | str | None
     _patch_field_annotation(
         ListCreativeFormatsRequest,
         "asset_types",
@@ -121,41 +121,49 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         ListCreativeFormatsRequest,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+        "wcag_level",
+        Annotated[WcagLevel | None, BeforeValidator(coerce_to_enum(WcagLevel))],
     )
     _patch_field_annotation(
         ListCreativeFormatsRequest,
-        "disclosure_persistence",
+        "disclosure_positions",
         Annotated[
-            list[DisclosurePersistence] | None,
-            BeforeValidator(coerce_to_enum_list(DisclosurePersistence)),
+            list[DisclosurePosition] | None,
+            BeforeValidator(coerce_to_enum_list(DisclosurePosition)),
         ],
     )
     _patch_field_annotation(
         ListCreativeFormatsRequest,
-        "disclosure_positions",
+        "disclosure_persistence",
         Annotated[
-            list[DisclosurePosition] | None,
-            BeforeValidator(coerce_to_enum_list(DisclosurePosition)),
+            list[DisclosurePersistence] | None,
+            BeforeValidator(coerce_to_enum_list(DisclosurePersistence)),
         ],
     )
     _patch_field_annotation(
         ListCreativeFormatsRequest,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
     )
     _patch_field_annotation(
         ListCreativeFormatsRequest,
-        "wcag_level",
-        Annotated[WcagLevel | None, BeforeValidator(coerce_to_enum(WcagLevel))],
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     ListCreativeFormatsRequest.model_rebuild(force=True)
 
     # Apply coercion to ListCreativesRequest
+    # - fields: list[ListCreativesField | str] | None
     # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - fields: list[ListCreativesField | str] | None
+    _patch_field_annotation(
+        ListCreativesRequest,
+        "fields",
+        Annotated[
+            list[ListCreativesField] | None,
+            BeforeValidator(coerce_to_enum_list(ListCreativesField)),
+        ],
+    )
     _patch_field_annotation(
         ListCreativesRequest,
         "context",
@@ -166,37 +174,29 @@ def _apply_coercion() -> None:
         "ext",
         Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
-    _patch_field_annotation(
-        ListCreativesRequest,
-        "fields",
-        Annotated[
-            list[ListCreativesField] | None,
-            BeforeValidator(coerce_to_enum_list(ListCreativesField)),
-        ],
-    )
     ListCreativesRequest.model_rebuild(force=True)
 
     # Apply coercion to Sort
-    # - direction: SortDirection | str | None
     # - field: CreativeSortField | str | None
+    # - direction: SortDirection | str | None
     _patch_field_annotation(
         Sort,
-        "direction",
-        Annotated[SortDirection | None, BeforeValidator(coerce_to_enum(SortDirection))],
+        "field",
+        Annotated[CreativeSortField | None, BeforeValidator(coerce_to_enum(CreativeSortField))],
     )
     _patch_field_annotation(
         Sort,
-        "field",
-        Annotated[CreativeSortField | None, BeforeValidator(coerce_to_enum(CreativeSortField))],
+        "direction",
+        Annotated[SortDirection | None, BeforeValidator(coerce_to_enum(SortDirection))],
     )
     Sort.model_rebuild(force=True)
 
     # Apply coercion to GetProductsRequest
     # - buying_mode: BuyingMode | str | None
+    # - preferred_delivery_types: list[DeliveryType | str] | None
+    # - fields: list[GetProductsField | str] | None
     # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - fields: list[GetProductsField | str] | None
-    # - preferred_delivery_types: list[DeliveryType | str] | None
     _patch_field_annotation(
         GetProductsRequest,
         "buying_mode",
@@ -204,13 +204,11 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         GetProductsRequest,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
-    )
-    _patch_field_annotation(
-        GetProductsRequest,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "preferred_delivery_types",
+        Annotated[
+            list[DeliveryType] | None,
+            BeforeValidator(coerce_to_enum_list(DeliveryType)),
+        ],
     )
     _patch_field_annotation(
         GetProductsRequest,
@@ -222,24 +220,26 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         GetProductsRequest,
-        "preferred_delivery_types",
-        Annotated[
-            list[DeliveryType] | None,
-            BeforeValidator(coerce_to_enum_list(DeliveryType)),
-        ],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+    )
+    _patch_field_annotation(
+        GetProductsRequest,
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     GetProductsRequest.model_rebuild(force=True)
 
     # Apply coercion to PackageRequest
-    # - context: ContextObject | dict | None
+    # - pacing: Pacing | str | None
     # - creative_assignments: list[CreativeAssignment] (accepts subclass instances)
     # - creatives: list[CreativeAsset] (accepts subclass instances)
+    # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - pacing: Pacing | str | None
     _patch_field_annotation(
         PackageRequest,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+        "pacing",
+        Annotated[Pacing | None, BeforeValidator(coerce_to_enum(Pacing))],
     )
     _patch_field_annotation(
         PackageRequest,
@@ -259,21 +259,29 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         PackageRequest,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
     )
     _patch_field_annotation(
         PackageRequest,
-        "pacing",
-        Annotated[Pacing | None, BeforeValidator(coerce_to_enum(Pacing))],
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     PackageRequest.model_rebuild(force=True)
 
     # Apply coercion to CreateMediaBuyRequest
+    # - packages: list[PackageRequest] (accepts subclass instances)
     # - advertiser_industry: AdvertiserIndustry | str | None
     # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - packages: list[PackageRequest] (accepts subclass instances)
+    _patch_field_annotation(
+        CreateMediaBuyRequest,
+        "packages",
+        Annotated[
+            list[PackageRequest] | None,
+            BeforeValidator(coerce_subclass_list(PackageRequest)),
+        ],
+    )
     _patch_field_annotation(
         CreateMediaBuyRequest,
         "advertiser_industry",
@@ -289,26 +297,18 @@ def _apply_coercion() -> None:
         "ext",
         Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
-    _patch_field_annotation(
-        CreateMediaBuyRequest,
-        "packages",
-        Annotated[
-            list[PackageRequest] | None,
-            BeforeValidator(coerce_subclass_list(PackageRequest)),
-        ],
-    )
     CreateMediaBuyRequest.model_rebuild(force=True)
 
     # Apply coercion to PackageUpdate
-    # - context: ContextObject | dict | None
+    # - pacing: Pacing | str | None
     # - creative_assignments: list[CreativeAssignment] (accepts subclass instances)
     # - creatives: list[CreativeAsset] (accepts subclass instances)
+    # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - pacing: Pacing | str | None
     _patch_field_annotation(
         PackageUpdate,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+        "pacing",
+        Annotated[Pacing | None, BeforeValidator(coerce_to_enum(Pacing))],
     )
     _patch_field_annotation(
         PackageUpdate,
@@ -328,25 +328,28 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         PackageUpdate,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
     )
     _patch_field_annotation(
         PackageUpdate,
-        "pacing",
-        Annotated[Pacing | None, BeforeValidator(coerce_to_enum(Pacing))],
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     PackageUpdate.model_rebuild(force=True)
 
     # Apply coercion to GetProductsResponse
-    # - context: ContextObject | dict | None
+    # - products: list[Product] (accepts subclass instances)
     # - errors: list[Error] (accepts subclass instances)
+    # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - products: list[Product] (accepts subclass instances)
     _patch_field_annotation(
         GetProductsResponse,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+        "products",
+        Annotated[
+            list[Product],
+            BeforeValidator(coerce_subclass_list(Product)),
+        ],
     )
     _patch_field_annotation(
         GetProductsResponse,
@@ -358,29 +361,21 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         GetProductsResponse,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
     )
     _patch_field_annotation(
         GetProductsResponse,
-        "products",
-        Annotated[
-            list[Product],
-            BeforeValidator(coerce_subclass_list(Product)),
-        ],
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     GetProductsResponse.model_rebuild(force=True)
 
     # Apply coercion to ListCreativesResponse
-    # - context: ContextObject | dict | None
     # - creatives: list[Creative] (accepts subclass instances)
     # - errors: list[Error] (accepts subclass instances)
+    # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    _patch_field_annotation(
-        ListCreativesResponse,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
-    )
     _patch_field_annotation(
         ListCreativesResponse,
         "creatives",
@@ -397,6 +392,11 @@ def _apply_coercion() -> None:
             BeforeValidator(coerce_subclass_list(Error)),
         ],
     )
+    _patch_field_annotation(
+        ListCreativesResponse,
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+    )
     _patch_field_annotation(
         ListCreativesResponse,
         "ext",
@@ -405,15 +405,18 @@ def _apply_coercion() -> None:
     ListCreativesResponse.model_rebuild(force=True)
 
     # Apply coercion to ListCreativeFormatsResponse
-    # - context: ContextObject | dict | None
+    # - formats: list[Format] (accepts subclass instances)
     # - creative_agents: list[CreativeAgent] (accepts subclass instances)
     # - errors: list[Error] (accepts subclass instances)
+    # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - formats: list[Format] (accepts subclass instances)
     _patch_field_annotation(
         ListCreativeFormatsResponse,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+        "formats",
+        Annotated[
+            list[Format],
+            BeforeValidator(coerce_subclass_list(Format)),
+        ],
     )
     _patch_field_annotation(
         ListCreativeFormatsResponse,
@@ -433,34 +436,34 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         ListCreativeFormatsResponse,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
     )
     _patch_field_annotation(
         ListCreativeFormatsResponse,
-        "formats",
-        Annotated[
-            list[Format],
-            BeforeValidator(coerce_subclass_list(Format)),
-        ],
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     ListCreativeFormatsResponse.model_rebuild(force=True)
 
     # Apply coercion to CreateMediaBuyResponse1
-    # - context: ContextObject | dict | None
-    # - ext: ExtensionObject | dict | None
-    # - packages: list[Package] (accepts subclass instances)
     # - status: MediaBuyStatus | str | None
     # - valid_actions: list[ValidAction | str] | None
+    # - packages: list[Package] (accepts subclass instances)
+    # - context: ContextObject | dict | None
+    # - ext: ExtensionObject | dict | None
     _patch_field_annotation(
         CreateMediaBuyResponse1,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+        "status",
+        Annotated[MediaBuyStatus | None, BeforeValidator(coerce_to_enum(MediaBuyStatus))],
     )
     _patch_field_annotation(
         CreateMediaBuyResponse1,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "valid_actions",
+        Annotated[
+            list[ValidAction] | None,
+            BeforeValidator(coerce_to_enum_list(ValidAction)),
+        ],
     )
     _patch_field_annotation(
         CreateMediaBuyResponse1,
@@ -472,55 +475,52 @@ def _apply_coercion() -> None:
     )
     _patch_field_annotation(
         CreateMediaBuyResponse1,
-        "status",
-        Annotated[MediaBuyStatus | None, BeforeValidator(coerce_to_enum(MediaBuyStatus))],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
     )
     _patch_field_annotation(
         CreateMediaBuyResponse1,
-        "valid_actions",
-        Annotated[
-            list[ValidAction] | None,
-            BeforeValidator(coerce_to_enum_list(ValidAction)),
-        ],
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     CreateMediaBuyResponse1.model_rebuild(force=True)
 
     # Apply coercion to GetMediaBuyDeliveryResponse
-    # - context: ContextObject | dict | None
+    # - notification_type: NotificationType | str | None
+    # - media_buy_deliveries: list[MediaBuyDelivery] (accepts subclass instances)
     # - errors: list[Error] (accepts subclass instances)
+    # - context: ContextObject | dict | None
     # - ext: ExtensionObject | dict | None
-    # - media_buy_deliveries: list[MediaBuyDelivery] (accepts subclass instances)
-    # - notification_type: NotificationType | str | None
     _patch_field_annotation(
         GetMediaBuyDeliveryResponse,
-        "context",
-        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
+        "notification_type",
+        Annotated[NotificationType | None, BeforeValidator(coerce_to_enum(NotificationType))],
     )
     _patch_field_annotation(
         GetMediaBuyDeliveryResponse,
-        "errors",
+        "media_buy_deliveries",
         Annotated[
-            list[Error] | None,
-            BeforeValidator(coerce_subclass_list(Error)),
+            list[MediaBuyDelivery],
+            BeforeValidator(coerce_subclass_list(MediaBuyDelivery)),
         ],
     )
     _patch_field_annotation(
         GetMediaBuyDeliveryResponse,
-        "ext",
-        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
+        "errors",
+        Annotated[
+            list[Error] | None,
+            BeforeValidator(coerce_subclass_list(Error)),
+        ],
     )
     _patch_field_annotation(
         GetMediaBuyDeliveryResponse,
-        "media_buy_deliveries",
-        Annotated[
-            list[MediaBuyDelivery],
-            BeforeValidator(coerce_subclass_list(MediaBuyDelivery)),
-        ],
+        "context",
+        Annotated[ContextObject | None, BeforeValidator(coerce_to_model(ContextObject))],
     )
     _patch_field_annotation(
         GetMediaBuyDeliveryResponse,
-        "notification_type",
-        Annotated[NotificationType | None, BeforeValidator(coerce_to_enum(NotificationType))],
+        "ext",
+        Annotated[ExtensionObject | None, BeforeValidator(coerce_to_model(ExtensionObject))],
     )
     GetMediaBuyDeliveryResponse.model_rebuild(force=True)
 
diff --git a/src/adcp/types/_generated.py b/src/adcp/types/_generated.py
index aa5f5b83e..5f9b01d49 100644
--- a/src/adcp/types/_generated.py
+++ b/src/adcp/types/_generated.py
@@ -10,7 +10,7 @@
 DO NOT EDIT MANUALLY.
 
 Generated from: https://github.com/adcontextprotocol/adcp/tree/main/schemas
-Generation date: 2026-04-16 13:06:46 UTC
+Generation date: 2026-04-18 21:01:16 UTC
 """
 
 # ruff: noqa: E501, I001
@@ -19,7 +19,7 @@
 # Import all types from generated_poc modules
 from adcp.types.generated_poc.enums.account_status import AccountStatus
 from adcp.types.generated_poc.enums.action_source import ActionSource
-from adcp.types.generated_poc.enums.adcp_domain import AdcpDomain
+from adcp.types.generated_poc.enums.adcp_protocol import AdcpProtocol
 from adcp.types.generated_poc.enums.adjustment_kind import PriceAdjustmentKind
 from adcp.types.generated_poc.enums.advertiser_industry import AdvertiserIndustry
 from adcp.types.generated_poc.enums.age_verification_method import AgeVerificationMethod
@@ -29,12 +29,14 @@
 from adcp.types.generated_poc.enums.audience_source import AudienceSource
 from adcp.types.generated_poc.enums.auth_scheme import AuthenticationScheme
 from adcp.types.generated_poc.enums.available_metric import AvailableMetric
+from adcp.types.generated_poc.enums.brand_agent_type import BrandAgentType
 from adcp.types.generated_poc.enums.budget_authority_level import BudgetAuthorityLevel
 from adcp.types.generated_poc.enums.canceled_by import CanceledBy
 from adcp.types.generated_poc.enums.catalog_action import CatalogAction
 from adcp.types.generated_poc.enums.catalog_item_status import CatalogItemStatus
 from adcp.types.generated_poc.enums.catalog_type import CatalogType
 from adcp.types.generated_poc.enums.channels import MediaChannel
+from adcp.types.generated_poc.enums.cloud_storage_protocol import CloudStorageProtocol
 from adcp.types.generated_poc.enums.co_branding_requirement import CoBrandingRequirement
 from adcp.types.generated_poc.enums.collection_cadence import CollectionCadence
 from adcp.types.generated_poc.enums.collection_relationship import CollectionRelationship
@@ -45,6 +47,7 @@
 from adcp.types.generated_poc.enums.creative_action import CreativeAction
 from adcp.types.generated_poc.enums.creative_agent_capability import CreativeAgentCapability
 from adcp.types.generated_poc.enums.creative_approval_status import CreativeApprovalStatus
+from adcp.types.generated_poc.enums.creative_identifier_type import CreativeIdentifierType
 from adcp.types.generated_poc.enums.creative_quality import CreativeQuality
 from adcp.types.generated_poc.enums.creative_sort_field import CreativeSortField
 from adcp.types.generated_poc.enums.creative_status import CreativeStatus
@@ -104,6 +107,7 @@
 from adcp.types.generated_poc.enums.property_type import PropertyType
 from adcp.types.generated_poc.enums.proposal_status import ProposalStatus
 from adcp.types.generated_poc.enums.publisher_identifier_types import PublisherIdentifierTypes
+from adcp.types.generated_poc.enums.purchase_type import PurchaseType
 from adcp.types.generated_poc.enums.reach_unit import ReachUnit
 from adcp.types.generated_poc.enums.reporting_frequency import ReportingFrequency
 from adcp.types.generated_poc.enums.response_type import TmpResponseType
@@ -117,6 +121,7 @@
 from adcp.types.generated_poc.enums.sort_direction import SortDirection
 from adcp.types.generated_poc.enums.sort_metric import SortMetric
 from adcp.types.generated_poc.enums.special_category import SpecialCategory
+from adcp.types.generated_poc.enums.specialism import AdcpSpecialism
 from adcp.types.generated_poc.enums.talent_role import TalentRole
 from adcp.types.generated_poc.enums.task_status import TaskStatus
 from adcp.types.generated_poc.enums.task_type import TaskType
@@ -132,8 +137,42 @@
 from adcp.types.generated_poc.enums.wcag_level import WcagLevel
 from adcp.types.generated_poc.enums.webhook_response_type import WebhookResponseType
 from adcp.types.generated_poc.enums.webhook_security_method import WebhookSecurityMethod
+from adcp.types.generated_poc.a2ui.bound_value import (
+    A2UiBoundValue,
+    A2UiBoundValue1,
+    A2UiBoundValue2,
+    A2UiBoundValue3,
+    A2UiBoundValue4,
+    A2UiBoundValue5,
+)
 from adcp.types.generated_poc.a2ui.component import A2UiComponent
+from adcp.types.generated_poc.a2ui.si_catalog import (
+    Action,
+    Action7,
+    Align,
+    AppHandoff,
+    Apps,
+    Button,
+    Card,
+    Column,
+    Component,
+    Image,
+    IntegrationAction,
+    Justify,
+    Layout,
+    Link,
+    List,
+    ProductCard,
+    Row,
+    SiComponentCatalog,
+    Template,
+    Text,
+    Type,
+    Variant,
+    Variant4,
+)
 from adcp.types.generated_poc.a2ui.surface import A2UiSurface
+from adcp.types.generated_poc.a2ui.user_action import A2UiUserAction
 from adcp.types.generated_poc.account.get_account_financials_request import (
     GetAccountFinancialsRequest,
 )
@@ -154,20 +193,26 @@
 from adcp.types.generated_poc.account.list_accounts_response import ListAccountsResponse
 from adcp.types.generated_poc.account.report_usage_request import ReportUsageRequest, UsageItem
 from adcp.types.generated_poc.account.report_usage_response import ReportUsageResponse
-from adcp.types.generated_poc.account.sync_accounts_request import (
-    Account,
-    Billing,
-    SyncAccountsRequest,
-)
+from adcp.types.generated_poc.account.sync_accounts_request import Billing, SyncAccountsRequest
 from adcp.types.generated_poc.account.sync_accounts_response import (
     AccountScope,
-    Action,
     CreditLimit,
     Setup,
     SyncAccountsResponse,
     SyncAccountsResponse1,
     SyncAccountsResponse2,
 )
+from adcp.types.generated_poc.account.sync_governance_request import (
+    Authentication,
+    Category,
+    GovernanceAgent,
+    SyncGovernanceRequest,
+)
+from adcp.types.generated_poc.account.sync_governance_response import (
+    SyncGovernanceResponse,
+    SyncGovernanceResponse1,
+    SyncGovernanceResponse2,
+)
 from adcp.types.generated_poc.adagents import (
     AdcpAgentsAuthorization,
     AdcpAgentsAuthorization1,
@@ -182,8 +227,6 @@
     Country,
     DelegationType,
     PlacementTags,
-    PropertyFeature,
-    SignalId,
     SignalTag,
     SignalTags,
     Tags,
@@ -197,6 +240,14 @@
     AcquireRightsResponse4,
     Disclosure,
 )
+from adcp.types.generated_poc.brand.creative_approval_request import CreativeApprovalRequest
+from adcp.types.generated_poc.brand.creative_approval_response import (
+    CreativeApprovalResponse,
+    CreativeApprovalResponse1,
+    CreativeApprovalResponse2,
+    CreativeApprovalResponse3,
+    CreativeApprovalResponse4,
+)
 from adcp.types.generated_poc.brand.get_brand_identity_request import (
     FieldModel,
     GetBrandIdentityRequest,
@@ -209,10 +260,14 @@
     AvailableField,
     Background,
     Background2,
-    Background2Item,
     Background3,
+    Background3Item,
     Colors,
     ExcludedCountry,
+    Fallback,
+    File,
+    FontRole,
+    FontRole2,
     Fonts,
     GetBrandIdentityResponse,
     GetBrandIdentityResponse1,
@@ -220,6 +275,7 @@
     House,
     KellerType,
     Logo,
+    OpentypeFeature,
     Orientation,
     Primary,
     Primary1,
@@ -228,13 +284,13 @@
     Secondary,
     Secondary1,
     Secondary1Item,
+    Style,
     Tagline,
-    Text,
     Text1,
     Text1Item,
     Tone,
-    Variant,
     VoiceSynthesis,
+    WeightRangeItem,
 )
 from adcp.types.generated_poc.brand.get_rights_request import GetRightsRequest
 from adcp.types.generated_poc.brand.get_rights_response import (
@@ -246,14 +302,20 @@
     PreviewAsset,
     Right,
 )
+from adcp.types.generated_poc.brand.revocation_notification import RevocationNotification
 from adcp.types.generated_poc.brand.rights_pricing_option import Period, RightsPricingOption
 from adcp.types.generated_poc.brand.rights_terms import RightsTerms
+from adcp.types.generated_poc.brand.update_rights_request import UpdateRightsRequest
+from adcp.types.generated_poc.brand.update_rights_response import (
+    UpdateRightsResponse,
+    UpdateRightsResponse1,
+    UpdateRightsResponse2,
+)
 from adcp.types.generated_poc.collection.base_collection_source import (
     BaseCollectionSource,
     BaseCollectionSource1,
     BaseCollectionSource2,
     BaseCollectionSource3,
-    Identifier,
 )
 from adcp.types.generated_poc.collection.collection_list import CollectionList
 from adcp.types.generated_poc.collection.collection_list_changed_webhook import (
@@ -282,7 +344,6 @@
     Pagination,
 )
 from adcp.types.generated_poc.collection.get_collection_list_response import (
-    Collection,
     CoverageGap,
     DistributionId,
     GetCollectionListResponse,
@@ -301,21 +362,9 @@
 )
 from adcp.types.generated_poc.compliance.comply_test_controller_request import (
     ComplyTestControllerRequest,
-    ComplyTestControllerRequest1,
-    ComplyTestControllerRequest2,
-    ComplyTestControllerRequest3,
-    ComplyTestControllerRequest4,
-    ComplyTestControllerRequest5,
-    ComplyTestControllerRequest6,
-    ComplyTestControllerRequest7,
     Params,
-    Params1,
-    Params2,
-    Params3,
-    Params4,
-    Params5,
-    Params6,
     ReportedSpend,
+    Scenario,
 )
 from adcp.types.generated_poc.compliance.comply_test_controller_response import (
     ComplyTestControllerResponse,
@@ -323,7 +372,6 @@
     ComplyTestControllerResponse2,
     ComplyTestControllerResponse3,
     ComplyTestControllerResponse4,
-    Scenario,
 )
 from adcp.types.generated_poc.content_standards.artifact import (
     Artifact,
@@ -419,7 +467,7 @@
     ValidateContentDeliveryResponse1,
     ValidateContentDeliveryResponse2,
 )
-from adcp.types.generated_poc.core.account import Category, GovernanceAgent
+from adcp.types.generated_poc.core.account import Account, Compression, ReportingBucket
 from adcp.types.generated_poc.core.account_ref import (
     AccountReference,
     AccountReference1,
@@ -427,11 +475,13 @@
 )
 from adcp.types.generated_poc.core.activation_key import (
     ActivationKey,
-    ActivationKey1,
-    ActivationKey2,
+    ActivationKey4,
+    ActivationKey5,
 )
 from adcp.types.generated_poc.core.ad_inventory_config import AdInventoryConfiguration
+from adcp.types.generated_poc.core.agent_encryption_key import AgentEncryptionKey
 from adcp.types.generated_poc.core.agent_signing_key import AgentSigningKey
+from adcp.types.generated_poc.core.app_item import AppItem, Platform
 from adcp.types.generated_poc.core.assets.audio_asset import AudioAsset, BitDepth, Channels
 from adcp.types.generated_poc.core.assets.brief_asset import BriefAsset
 from adcp.types.generated_poc.core.assets.catalog_asset import CatalogAsset
@@ -471,16 +521,13 @@
 from adcp.types.generated_poc.core.brand_id import BrandId
 from adcp.types.generated_poc.core.brand_ref import BrandReference
 from adcp.types.generated_poc.core.business_entity import Address, Bank, BusinessEntity
-from adcp.types.generated_poc.core.cancellation_policy import (
-    CancellationFee,
-    CancellationPolicy,
-    Type,
-)
+from adcp.types.generated_poc.core.cancellation_policy import CancellationFee, CancellationPolicy
 from adcp.types.generated_poc.core.catalog import Catalog, Gtin
 from adcp.types.generated_poc.core.catalog_field_mapping import CatalogFieldMapping, Transform
 from adcp.types.generated_poc.core.catchment import Catchment, Geometry, Radius, TravelTime, Unit
-from adcp.types.generated_poc.core.collection import RelatedCollection
+from adcp.types.generated_poc.core.collection import Collection, RelatedCollection
 from adcp.types.generated_poc.core.collection_distribution import CollectionDistribution
+from adcp.types.generated_poc.core.collection_list_ref import CollectionListReference
 from adcp.types.generated_poc.core.collection_selector import CollectionSelector
 from adcp.types.generated_poc.core.content_rating import ContentRating
 from adcp.types.generated_poc.core.context import ContextObject
@@ -494,6 +541,7 @@
     Objective,
     RequiredDisclosure,
 )
+from adcp.types.generated_poc.core.creative_consumption import CreativeConsumption
 from adcp.types.generated_poc.core.creative_filters import CreativeFilters
 from adcp.types.generated_poc.core.creative_item import CreativeItem, CreativeItem1, CreativeItem2
 from adcp.types.generated_poc.core.creative_manifest import CreativeManifest
@@ -517,7 +565,6 @@
     DeliveryMetrics,
     DoohMetrics,
     QuartileData,
-    Standard,
     VenueBreakdownItem,
     Viewability,
 )
@@ -536,46 +583,47 @@
 from adcp.types.generated_poc.core.event_custom_data import Content, EventCustomData
 from adcp.types.generated_poc.core.event_source_health import Detail, EventSourceHealth
 from adcp.types.generated_poc.core.ext import ExtensionObject
+from adcp.types.generated_poc.core.feature_requirement import FeatureRequirement, IfNotCovered
 from adcp.types.generated_poc.core.flight_item import FlightItem, Origin
 from adcp.types.generated_poc.core.forecast_point import ForecastPoint, Metrics
 from adcp.types.generated_poc.core.forecast_range import ForecastRange
 from adcp.types.generated_poc.core.format import (
-    Assets10,
-    Assets11,
-    Assets12,
-    Assets13,
-    Assets14,
-    Assets15,
-    Assets16,
-    Assets17,
-    Assets18,
-    Assets19,
-    Assets20,
-    Assets21,
-    Assets22,
-    Assets23,
-    Assets24,
-    Assets25,
-    Assets26,
-    Assets27,
-    Assets28,
-    Assets29,
-    Assets30,
-    Assets5,
-    Assets6,
-    Assets7,
-    Assets8,
-    Assets9,
+    Assets100,
+    Assets101,
+    Assets102,
+    Assets103,
+    Assets104,
+    Assets105,
+    Assets106,
+    Assets81,
+    Assets82,
+    Assets83,
+    Assets84,
+    Assets85,
+    Assets86,
+    Assets87,
+    Assets88,
+    Assets89,
+    Assets90,
+    Assets91,
+    Assets92,
+    Assets93,
+    Assets94,
+    Assets95,
+    Assets96,
+    Assets97,
+    Assets98,
+    Assets99,
     BaseGroupAsset,
     BaseIndividualAsset,
     Dimensions,
-    Dimensions1,
+    Dimensions7,
     DisclosureCapability,
     Format,
     FormatCard,
     FormatCardDetailed,
     Renders,
-    Renders1,
+    Renders7,
     Responsive,
     SelectionMode,
 )
@@ -584,6 +632,8 @@
 from adcp.types.generated_poc.core.generation_credential import GenerationCredential
 from adcp.types.generated_poc.core.geo_breakdown_support import GeographicBreakdownSupport
 from adcp.types.generated_poc.core.hotel_item import HotelItem
+from adcp.types.generated_poc.core.identifier import Identifier
+from adcp.types.generated_poc.core.industry_identifier import IndustryIdentifier
 from adcp.types.generated_poc.core.insertion_order import InsertionOrder, Terms, TotalBudget
 from adcp.types.generated_poc.core.installment import DerivativeOf, Installment
 from adcp.types.generated_poc.core.installment_deadlines import InstallmentDeadlines
@@ -597,6 +647,7 @@
     MakegoodPolicy,
     MeasurementTerms,
 )
+from adcp.types.generated_poc.core.measurement_window import MeasurementWindow
 from adcp.types.generated_poc.core.media_buy import Cancellation, MediaBuy
 from adcp.types.generated_poc.core.media_buy_features import MediaBuyFeatures
 from adcp.types.generated_poc.core.offering import GeoTargets, Metro, Offering, PostalArea, Region
@@ -608,12 +659,12 @@
     OptimizationGoal1,
     OptimizationGoal2,
     Target,
-    Target1,
-    Target2,
-    Target3,
-    Target4,
+    Target11,
+    Target12,
+    Target13,
+    Target14,
     TargetFrequency,
-    TargetFrequency1,
+    TargetFrequency5,
 )
 from adcp.types.generated_poc.core.outcome_measurement import OutcomeMeasurement
 from adcp.types.generated_poc.core.overlay import Bounds, Overlay, Visual
@@ -637,29 +688,28 @@
     MaterialSubmission,
     MetricOptimization,
     Product,
-    ProductCard,
     ProductCardDetailed,
     SupportedMetric,
     SupportedTarget,
-    SupportedTarget1,
+    SupportedTarget3,
     SupportedViewDuration,
     TrustedMatch,
 )
 from adcp.types.generated_poc.core.product_allocation import ProductAllocation
 from adcp.types.generated_poc.core.product_filters import (
     BudgetRange,
-    BudgetRange1,
+    BudgetRange3,
     GeoProximity,
-    GeoProximity2,
-    GeoProximity3,
-    Geometry2,
-    Geometry3,
+    GeoProximity15,
+    GeoProximity16,
+    Geometry14,
+    Geometry15,
     Keyword,
     MatchType,
     ProductFilters,
     RequiredGeoTargetingItem,
-    TravelTime2,
-    TravelTime3,
+    TravelTime14,
+    TravelTime15,
 )
 from adcp.types.generated_poc.core.property import Property
 from adcp.types.generated_poc.core.property_id import PropertyId
@@ -682,10 +732,7 @@
     PublisherPropertySelector2,
     PublisherPropertySelector3,
 )
-from adcp.types.generated_poc.core.push_notification_config import (
-    Authentication,
-    PushNotificationConfig,
-)
+from adcp.types.generated_poc.core.push_notification_config import PushNotificationConfig
 from adcp.types.generated_poc.core.real_estate_item import Area, ListingType, RealEstateItem
 from adcp.types.generated_poc.core.reference_asset import ReferenceAsset
 from adcp.types.generated_poc.core.reporting_capabilities import (
@@ -736,6 +783,9 @@
 )
 from adcp.types.generated_poc.core.requirements.vast_asset_requirements import VastAssetRequirements
 from adcp.types.generated_poc.core.requirements.video_asset_requirements import (
+    AudioChannel,
+    AudioCodec,
+    AudioSampleRate,
     Codec,
     Container,
     FrameRate,
@@ -753,28 +803,20 @@
 )
 from adcp.types.generated_poc.core.signal_definition import Range, SignalDefinition, Tag
 from adcp.types.generated_poc.core.signal_filters import SignalFilters
-from adcp.types.generated_poc.core.signal_id import SignalId2, SignalId3
+from adcp.types.generated_poc.core.signal_id import SignalId, SignalId17, SignalId18
 from adcp.types.generated_poc.core.signal_pricing import (
-    SignalPricing,
-    SignalPricing1,
-    SignalPricing2,
-    SignalPricing3,
-)
-from adcp.types.generated_poc.core.signal_pricing_option import (
-    SignalPricingOption,
-    SignalPricingOption1,
-    SignalPricingOption2,
-    SignalPricingOption3,
-    SignalPricingOption4,
-    SignalPricingOption5,
-    SignalPricingOption6,
-    SignalPricingOption7,
+    VendorPricing,
+    VendorPricing1,
+    VendorPricing2,
+    VendorPricing3,
+    VendorPricing4,
 )
+from adcp.types.generated_poc.core.signal_pricing_option import SignalPricingOption
 from adcp.types.generated_poc.core.signal_targeting import (
     SignalTargeting,
-    SignalTargeting1,
-    SignalTargeting2,
-    SignalTargeting3,
+    SignalTargeting4,
+    SignalTargeting5,
+    SignalTargeting6,
 )
 from adcp.types.generated_poc.core.special import Special
 from adcp.types.generated_poc.core.start_timing import StartTiming
@@ -788,19 +830,36 @@
     GeoMetrosExcludeItem,
     GeoPostalArea,
     GeoPostalAreasExcludeItem,
-    GeoProximity5,
-    GeoProximity6,
+    GeoProximity18,
+    GeoProximity19,
     GeoRegion,
     GeoRegionsExcludeItem,
-    Geometry5,
-    Geometry6,
+    Geometry17,
+    Geometry18,
     KeywordTarget,
     LanguageItem,
     NegativeKeyword,
     StoreCatchment,
     TargetingOverlay,
-    TravelTime5,
-    TravelTime6,
+    TravelTime17,
+    TravelTime18,
+)
+from adcp.types.generated_poc.core.tasks_get_request import TasksGetRequest
+from adcp.types.generated_poc.core.tasks_get_response import (
+    Details,
+    HistoryItem,
+    Progress,
+    TasksGetResponse,
+)
+from adcp.types.generated_poc.core.tasks_list_request import Field1, Filters, Sort, TasksListRequest
+from adcp.types.generated_poc.core.tasks_list_response import (
+    Direction,
+    Domain,
+    DomainBreakdown,
+    QuerySummary,
+    SortApplied,
+    Task,
+    TasksListResponse,
 )
 from adcp.types.generated_poc.core.user_match import UserMatch
 from adcp.types.generated_poc.core.vehicle_item import (
@@ -811,6 +870,18 @@
     Transmission,
     VehicleItem,
 )
+from adcp.types.generated_poc.core.vendor_pricing_option import (
+    VendorPricingOption,
+    VendorPricingOption1,
+    VendorPricingOption2,
+    VendorPricingOption3,
+    VendorPricingOption4,
+    VendorPricingOption5,
+    VendorPricingOption6,
+    VendorPricingOption7,
+    VendorPricingOption8,
+    VendorPricingOption9,
+)
 from adcp.types.generated_poc.creative.creative_feature_result import CreativeFeatureResult
 from adcp.types.generated_poc.creative.get_creative_delivery_request import (
     GetCreativeDeliveryRequest,
@@ -836,35 +907,27 @@
     CreativeAgent,
     ListCreativeFormatsResponseCreativeAgent,
 )
-from adcp.types.generated_poc.creative.list_creatives_request import (
-    Field1,
-    ListCreativesRequest,
-    Sort,
-)
+from adcp.types.generated_poc.creative.list_creatives_request import ListCreativesRequest
 from adcp.types.generated_poc.creative.list_creatives_response import (
     AssignedPackage,
     Assignments,
     ListCreativesResponse,
-    QuerySummary,
     Snapshot,
     SnapshotUnavailableReason,
-    SortApplied,
     StatusSummary,
 )
 from adcp.types.generated_poc.creative.preview_creative_request import (
-    Input4,
+    Input8,
     PreviewCreativeRequest,
-    PreviewCreativeRequest1,
-    PreviewCreativeRequest2,
-    PreviewCreativeRequest3,
     Request,
+    RequestType,
 )
 from adcp.types.generated_poc.creative.preview_creative_response import (
-    Input6,
+    Input12,
     Preview,
-    Preview5,
-    Preview6,
-    Preview7,
+    Preview10,
+    Preview11,
+    Preview9,
     PreviewCreativeResponse,
     PreviewCreativeResponse1,
     PreviewCreativeResponse2,
@@ -900,7 +963,25 @@
     SyncCreativesResponse1,
     SyncCreativesResponse2,
 )
+from adcp.types.generated_poc.error_details.account_setup_required import (
+    AccountSetupRequiredDetails,
+)
+from adcp.types.generated_poc.error_details.audience_too_small import AudienceTooSmallDetails
+from adcp.types.generated_poc.error_details.budget_too_low import BudgetTooLowDetails
+from adcp.types.generated_poc.error_details.conflict import ConflictDetails
+from adcp.types.generated_poc.error_details.creative_rejected import CreativeRejectedDetails
+from adcp.types.generated_poc.error_details.policy_violation import PolicyViolationDetails
+from adcp.types.generated_poc.error_details.rate_limited import RateLimitedDetails
+from adcp.types.generated_poc.error_details.vendor_error_codes import (
+    Codes,
+    VendorErrorCodeRegistry,
+    Vendors,
+)
 from adcp.types.generated_poc.extensions.extension_meta import AdcpExtensionFileSchema
+from adcp.types.generated_poc.governance.attribute_definition import (
+    AttributeDefinition,
+    RegulatoryBasi,
+)
 from adcp.types.generated_poc.governance.audience_constraints import AudienceConstraints
 from adcp.types.generated_poc.governance.check_governance_request import (
     AudienceDistribution,
@@ -921,12 +1002,22 @@
     Escalation,
     EscalationRateTrend,
     GetPlanAuditLogsResponse,
+    GovernedAction,
     Plan,
-    Status6,
+    Status13,
     Statuses,
     Thresholds,
 )
-from adcp.types.generated_poc.governance.policy_entry import Exemplar, Exemplars, PolicyEntry
+from adcp.types.generated_poc.governance.policy_category_definition import (
+    PolicyCategoryDefinition,
+    RegulatoryFramework,
+)
+from adcp.types.generated_poc.governance.policy_entry import (
+    Exemplar,
+    Exemplars,
+    PolicyEntry,
+    Source,
+)
 from adcp.types.generated_poc.governance.policy_ref import PolicyReference
 from adcp.types.generated_poc.governance.report_plan_outcome_request import (
     Delivery,
@@ -938,6 +1029,7 @@
     ReportPlanOutcomeResponse,
 )
 from adcp.types.generated_poc.governance.sync_plans_request import (
+    Allocations,
     BudgetLimit,
     Delegation,
     Flight,
@@ -948,8 +1040,7 @@
 )
 from adcp.types.generated_poc.governance.sync_plans_response import (
     ResolvedPolicy,
-    Source,
-    Status15,
+    Status37,
     SyncPlansResponse,
 )
 from adcp.types.generated_poc.media_buy.build_creative_async_response_input_required import (
@@ -1021,10 +1112,9 @@
 )
 from adcp.types.generated_poc.media_buy.get_media_buys_request import GetMediaBuysRequest
 from adcp.types.generated_poc.media_buy.get_media_buys_response import (
-    Cancellation1,
+    Cancellation2,
     CreativeApproval,
     GetMediaBuysResponse,
-    HistoryItem,
 )
 from adcp.types.generated_poc.media_buy.get_products_async_response_input_required import (
     GetProductsInputRequired,
@@ -1036,7 +1126,7 @@
     GetProductsWorking,
 )
 from adcp.types.generated_poc.media_buy.get_products_request import (
-    Action2,
+    Action3,
     BuyingMode,
     GetProductsRequest,
     Refine,
@@ -1047,7 +1137,7 @@
     GetProductsResponse,
     IncompleteItem,
     RefinementAppliedItem,
-    Scope2,
+    Scope3,
 )
 from adcp.types.generated_poc.media_buy.list_creative_formats_request import (
     ListCreativeFormatsRequest,
@@ -1140,12 +1230,13 @@
 from adcp.types.generated_poc.pricing_options.flat_rate_option import FlatRatePricingOption
 from adcp.types.generated_poc.pricing_options.price_breakdown import (
     Adjustments,
-    Adjustments1,
+    Adjustments21,
     PriceBreakdown,
 )
 from adcp.types.generated_poc.pricing_options.price_guidance import PriceGuidance
 from adcp.types.generated_poc.pricing_options.time_option import TimeBasedPricingOption, TimeUnit
 from adcp.types.generated_poc.pricing_options.vcpm_option import VcpmPricingOption
+from adcp.types.generated_poc.property.authorization_result import AuthorizationResult, Violation
 from adcp.types.generated_poc.property.base_property_source import (
     BasePropertySource,
     BasePropertySource1,
@@ -1160,16 +1251,22 @@
 from adcp.types.generated_poc.property.delete_property_list_response import (
     DeletePropertyListResponse,
 )
-from adcp.types.generated_poc.property.feature_requirement import FeatureRequirement, IfNotCovered
+from adcp.types.generated_poc.property.delivery_record import DeliveryRecord
 from adcp.types.generated_poc.property.get_property_list_request import GetPropertyListRequest
 from adcp.types.generated_poc.property.get_property_list_response import GetPropertyListResponse
 from adcp.types.generated_poc.property.list_property_lists_request import ListPropertyListsRequest
 from adcp.types.generated_poc.property.list_property_lists_response import ListPropertyListsResponse
 from adcp.types.generated_poc.property.property_error import Code, PropertyError
+from adcp.types.generated_poc.property.property_feature import PropertyFeature
 from adcp.types.generated_poc.property.property_feature_definition import (
     Coverage,
     PropertyFeatureDefinition,
 )
+from adcp.types.generated_poc.property.property_feature_result import (
+    CoverageStatus,
+    PropertyFeatureResult,
+)
+from adcp.types.generated_poc.property.property_feature_value import PropertyFeatureValue
 from adcp.types.generated_poc.property.property_list import PropertyList
 from adcp.types.generated_poc.property.property_list_changed_webhook import (
     PropertyListChangedWebhook,
@@ -1182,15 +1279,28 @@
 from adcp.types.generated_poc.property.update_property_list_response import (
     UpdatePropertyListResponse,
 )
+from adcp.types.generated_poc.property.validate_property_delivery_request import (
+    ValidatePropertyDeliveryRequest,
+)
+from adcp.types.generated_poc.property.validate_property_delivery_response import (
+    Aggregate,
+    AuthorizationSummary,
+    ValidatePropertyDeliveryResponse,
+)
+from adcp.types.generated_poc.property.validation_result import (
+    Requirement,
+    Status51,
+    ValidationResult,
+)
 from adcp.types.generated_poc.protocol.get_adcp_capabilities_request import (
     GetAdcpCapabilitiesRequest,
 )
 from adcp.types.generated_poc.protocol.get_adcp_capabilities_response import (
     Adcp,
     AudienceTargeting,
-    AvailableDimension,
     Brand,
-    ContentStandardsDetail,
+    ComplianceTesting,
+    CoversContentDigest,
     CreativeFeature,
     CreativeSpecs,
     DataProviderDomain,
@@ -1202,15 +1312,16 @@
     GeoPostalAreas,
     GetAdcpCapabilitiesResponse,
     Governance,
+    Idempotency,
     KeywordTargets,
     MajorVersion,
     MatchingLatencyHours,
     MraidVersion,
     NegativeKeywords,
-    Preferred,
     PrimaryCountry,
     PublisherDomain,
-    Reporting,
+    ReportingDeliveryMethod,
+    RequestSigning,
     Signals,
     SponsoredIntelligence,
     SupportedBillingEnum,
@@ -1220,6 +1331,7 @@
     Surface,
     Targeting,
     Transport,
+    Type28,
 )
 from adcp.types.generated_poc.signals.activate_signal_request import ActivateSignalRequest
 from adcp.types.generated_poc.signals.activate_signal_response import (
@@ -1290,22 +1402,2820 @@
 )
 from adcp.types.generated_poc.tmp.context_match_response import ContextMatchResponse, TargetingKv
 from adcp.types.generated_poc.tmp.error import TmpError
-from adcp.types.generated_poc.tmp.identity_match_request import Consent, IdentityMatchRequest
+from adcp.types.generated_poc.tmp.identity_match_request import (
+    Consent,
+    Identity,
+    IdentityMatchRequest,
+)
 from adcp.types.generated_poc.tmp.identity_match_response import IdentityMatchResponse
 from adcp.types.generated_poc.tmp.offer import Offer
 from adcp.types.generated_poc.tmp.offer_price import Model, OfferPrice
+from adcp.types.generated_poc.tmp.provider_registration import (
+    TmpProviderRegistration,
+    TmpProviderRegistration1,
+    TmpProviderRegistration2,
+)
+from adcp.types.generated_poc.bundled.content_standards.calibrate_content_request import (
+    Assets53,
+    Assets54,
+    Assets55,
+    DeclaredBy43,
+    DeclaredBy44,
+    DeclaredBy45,
+    DeclaredBy46,
+    Disclosure44,
+    Disclosure45,
+    Disclosure46,
+    Disclosure47,
+    Jurisdiction46,
+    Jurisdiction47,
+    Jurisdiction48,
+    Jurisdiction49,
+    Persistence,
+    Position,
+    Provenance44,
+    Provenance45,
+    Provenance46,
+    Provenance47,
+    RenderGuidance43,
+    RenderGuidance44,
+    RenderGuidance45,
+    RenderGuidance46,
+    Role48,
+    TranscriptSource3,
+    VerificationItem43,
+    VerificationItem44,
+    VerificationItem45,
+    VerificationItem46,
+)
+from adcp.types.generated_poc.bundled.content_standards.calibrate_content_response import (
+    CalibrateContentResponse3,
+    CalibrateContentResponse4,
+)
+from adcp.types.generated_poc.bundled.content_standards.create_content_standards_request import (
+    Assets57,
+    Assets58,
+    Assets59,
+    Assets60,
+    Assets61,
+    Assets62,
+    Assets63,
+    ChannelsAnyEnum,
+    DeclaredBy48,
+    DeclaredBy49,
+    DeclaredBy50,
+    DeclaredBy51,
+    DeclaredBy52,
+    DeclaredBy53,
+    DeclaredBy54,
+    DeclaredBy55,
+    DeclaredBy56,
+    Disclosure49,
+    Disclosure50,
+    Disclosure51,
+    Disclosure52,
+    Disclosure53,
+    Disclosure54,
+    Disclosure55,
+    Disclosure56,
+    Disclosure57,
+    Enforcement,
+    Fail2,
+    Jurisdiction51,
+    Jurisdiction52,
+    Jurisdiction53,
+    Jurisdiction54,
+    Jurisdiction55,
+    Jurisdiction56,
+    Jurisdiction57,
+    Jurisdiction58,
+    Jurisdiction59,
+    Pass2,
+    Policy,
+    Provenance49,
+    Provenance50,
+    Provenance51,
+    Provenance52,
+    Provenance53,
+    Provenance54,
+    Provenance55,
+    Provenance56,
+    Provenance57,
+    RenderGuidance48,
+    RenderGuidance49,
+    RenderGuidance50,
+    RenderGuidance51,
+    RenderGuidance52,
+    RenderGuidance53,
+    RenderGuidance54,
+    RenderGuidance55,
+    RenderGuidance56,
+    Role54,
+    TranscriptSource5,
+    VerificationItem48,
+    VerificationItem49,
+    VerificationItem50,
+    VerificationItem51,
+    VerificationItem52,
+    VerificationItem53,
+    VerificationItem54,
+    VerificationItem55,
+    VerificationItem56,
+)
+from adcp.types.generated_poc.bundled.content_standards.create_content_standards_response import (
+    CreateContentStandardsResponse3,
+    CreateContentStandardsResponse4,
+)
+from adcp.types.generated_poc.bundled.content_standards.get_content_standards_response import (
+    Assets108,
+    Assets109,
+    Assets110,
+    Assets111,
+    Assets112,
+    Assets113,
+    Assets114,
+    DeclaredBy72,
+    DeclaredBy73,
+    DeclaredBy74,
+    DeclaredBy75,
+    DeclaredBy76,
+    DeclaredBy77,
+    DeclaredBy78,
+    DeclaredBy79,
+    DeclaredBy80,
+    Disclosure73,
+    Disclosure74,
+    Disclosure75,
+    Disclosure76,
+    Disclosure77,
+    Disclosure78,
+    Disclosure79,
+    Disclosure80,
+    Disclosure81,
+    FailItem,
+    GetContentStandardsResponse3,
+    GetContentStandardsResponse4,
+    Jurisdiction77,
+    Jurisdiction78,
+    Jurisdiction79,
+    Jurisdiction80,
+    Jurisdiction81,
+    Jurisdiction82,
+    Jurisdiction83,
+    Jurisdiction84,
+    Jurisdiction85,
+    Pas,
+    PricingOption101,
+    PricingOption102,
+    PricingOption103,
+    PricingOption104,
+    PricingOption105,
+    PricingOption106,
+    PricingOption107,
+    PricingOption108,
+    PricingOption109,
+    Provenance73,
+    Provenance74,
+    Provenance75,
+    Provenance76,
+    Provenance77,
+    Provenance78,
+    Provenance79,
+    Provenance80,
+    Provenance81,
+    RenderGuidance72,
+    RenderGuidance73,
+    RenderGuidance74,
+    RenderGuidance75,
+    RenderGuidance76,
+    RenderGuidance77,
+    RenderGuidance78,
+    RenderGuidance79,
+    RenderGuidance80,
+    Role84,
+    TranscriptSource9,
+    VerificationItem72,
+    VerificationItem73,
+    VerificationItem74,
+    VerificationItem75,
+    VerificationItem76,
+    VerificationItem77,
+    VerificationItem78,
+    VerificationItem79,
+    VerificationItem80,
+)
+from adcp.types.generated_poc.bundled.content_standards.get_media_buy_artifacts_request import (
+    Account15,
+)
+from adcp.types.generated_poc.bundled.content_standards.get_media_buy_artifacts_response import (
+    Artifact6,
+    Assets148,
+    Assets149,
+    Assets150,
+    DeclaredBy110,
+    DeclaredBy111,
+    DeclaredBy112,
+    DeclaredBy113,
+    Disclosure111,
+    Disclosure112,
+    Disclosure113,
+    Disclosure114,
+    GetMediaBuyArtifactsResponse3,
+    GetMediaBuyArtifactsResponse4,
+    Jurisdiction117,
+    Jurisdiction118,
+    Jurisdiction119,
+    Jurisdiction120,
+    Provenance111,
+    Provenance112,
+    Provenance113,
+    Provenance114,
+    RenderGuidance110,
+    RenderGuidance111,
+    RenderGuidance112,
+    RenderGuidance113,
+    Role126,
+    TranscriptSource13,
+    VerificationItem110,
+    VerificationItem111,
+    VerificationItem112,
+    VerificationItem113,
+)
+from adcp.types.generated_poc.bundled.content_standards.list_content_standards_response import (
+    Assets152,
+    Assets153,
+    Assets154,
+    Assets155,
+    Assets156,
+    Assets157,
+    Assets158,
+    DeclaredBy115,
+    DeclaredBy116,
+    DeclaredBy117,
+    DeclaredBy118,
+    DeclaredBy119,
+    DeclaredBy120,
+    DeclaredBy121,
+    DeclaredBy122,
+    DeclaredBy123,
+    Disclosure116,
+    Disclosure117,
+    Disclosure118,
+    Disclosure119,
+    Disclosure120,
+    Disclosure121,
+    Disclosure122,
+    Disclosure123,
+    Disclosure124,
+    Jurisdiction122,
+    Jurisdiction123,
+    Jurisdiction124,
+    Jurisdiction125,
+    Jurisdiction126,
+    Jurisdiction127,
+    Jurisdiction128,
+    Jurisdiction129,
+    Jurisdiction130,
+    ListContentStandardsResponse3,
+    ListContentStandardsResponse4,
+    PricingOption131,
+    PricingOption132,
+    PricingOption133,
+    PricingOption134,
+    PricingOption135,
+    PricingOption136,
+    PricingOption137,
+    PricingOption138,
+    PricingOption139,
+    Provenance116,
+    Provenance117,
+    Provenance118,
+    Provenance119,
+    Provenance120,
+    Provenance121,
+    Provenance122,
+    Provenance123,
+    Provenance124,
+    RenderGuidance115,
+    RenderGuidance116,
+    RenderGuidance117,
+    RenderGuidance118,
+    RenderGuidance119,
+    RenderGuidance120,
+    RenderGuidance121,
+    RenderGuidance122,
+    RenderGuidance123,
+    Role135,
+    Standard,
+    TranscriptSource15,
+    VerificationItem115,
+    VerificationItem116,
+    VerificationItem117,
+    VerificationItem118,
+    VerificationItem119,
+    VerificationItem120,
+    VerificationItem121,
+    VerificationItem122,
+    VerificationItem123,
+)
+from adcp.types.generated_poc.bundled.content_standards.update_content_standards_request import (
+    Assets310,
+    Assets311,
+    Assets312,
+    Assets313,
+    Assets314,
+    Assets315,
+    Assets316,
+    DeclaredBy209,
+    DeclaredBy210,
+    DeclaredBy211,
+    DeclaredBy212,
+    DeclaredBy213,
+    DeclaredBy214,
+    DeclaredBy215,
+    DeclaredBy216,
+    DeclaredBy217,
+    Disclosure210,
+    Disclosure211,
+    Disclosure212,
+    Disclosure213,
+    Disclosure214,
+    Disclosure215,
+    Disclosure216,
+    Disclosure217,
+    Disclosure218,
+    Fail5,
+    Jurisdiction222,
+    Jurisdiction223,
+    Jurisdiction224,
+    Jurisdiction225,
+    Jurisdiction226,
+    Jurisdiction227,
+    Jurisdiction228,
+    Jurisdiction229,
+    Jurisdiction230,
+    Pass5,
+    Provenance209,
+    Provenance210,
+    Provenance211,
+    Provenance212,
+    Provenance213,
+    Provenance214,
+    Provenance215,
+    Provenance216,
+    Provenance217,
+    RenderGuidance209,
+    RenderGuidance210,
+    RenderGuidance211,
+    RenderGuidance212,
+    RenderGuidance213,
+    RenderGuidance214,
+    RenderGuidance215,
+    RenderGuidance216,
+    RenderGuidance217,
+    Role246,
+    TranscriptSource19,
+    VerificationItem209,
+    VerificationItem210,
+    VerificationItem211,
+    VerificationItem212,
+    VerificationItem213,
+    VerificationItem214,
+    VerificationItem215,
+    VerificationItem216,
+    VerificationItem217,
+)
+from adcp.types.generated_poc.bundled.content_standards.update_content_standards_response import (
+    UpdateContentStandardsResponse3,
+    UpdateContentStandardsResponse4,
+)
+from adcp.types.generated_poc.bundled.content_standards.validate_content_delivery_request import (
+    Assets350,
+    Assets351,
+    Assets352,
+    DeclaredBy247,
+    DeclaredBy248,
+    DeclaredBy249,
+    DeclaredBy250,
+    Disclosure248,
+    Disclosure249,
+    Disclosure250,
+    Disclosure251,
+    Jurisdiction262,
+    Jurisdiction263,
+    Jurisdiction264,
+    Jurisdiction265,
+    Provenance247,
+    Provenance248,
+    Provenance249,
+    Provenance250,
+    RenderGuidance247,
+    RenderGuidance248,
+    RenderGuidance249,
+    RenderGuidance250,
+    Role291,
+    TranscriptSource23,
+    VerificationItem247,
+    VerificationItem248,
+    VerificationItem249,
+    VerificationItem250,
+)
+from adcp.types.generated_poc.bundled.content_standards.validate_content_delivery_response import (
+    ValidateContentDeliveryResponse3,
+    ValidateContentDeliveryResponse4,
+)
+from adcp.types.generated_poc.bundled.creative.get_creative_delivery_request import Account11
+from adcp.types.generated_poc.bundled.creative.get_creative_delivery_response import (
+    Assets116,
+    Assets117,
+    Assets118,
+    Assets119,
+    Assets120,
+    Assets121,
+    Assets122,
+    Assets123,
+    Assets124,
+    Assets125,
+    Assets126,
+    Assets127,
+    Assets128,
+    Assets129,
+    Assets130,
+    ByActionSourceItem2,
+    ByEventTypeItem2,
+    DeclaredBy82,
+    DeclaredBy83,
+    DeclaredBy84,
+    DeclaredBy85,
+    DeclaredBy86,
+    DeclaredBy87,
+    DeclaredBy88,
+    DeclaredBy89,
+    DeclaredBy90,
+    DeclaredBy91,
+    DeclaredBy92,
+    DeclaredBy93,
+    DeclaredBy94,
+    Disclosure83,
+    Disclosure84,
+    Disclosure85,
+    Disclosure86,
+    Disclosure87,
+    Disclosure88,
+    Disclosure89,
+    Disclosure90,
+    Disclosure91,
+    Disclosure92,
+    Disclosure93,
+    Disclosure94,
+    Disclosure95,
+    DoohMetrics2,
+    FeedFieldMapping,
+    Jurisdiction100,
+    Jurisdiction87,
+    Jurisdiction88,
+    Jurisdiction89,
+    Jurisdiction90,
+    Jurisdiction91,
+    Jurisdiction92,
+    Jurisdiction93,
+    Jurisdiction94,
+    Jurisdiction95,
+    Jurisdiction96,
+    Jurisdiction97,
+    Jurisdiction98,
+    Jurisdiction99,
+    Manifest,
+    Method9,
+    Provenance83,
+    Provenance84,
+    Provenance85,
+    Provenance86,
+    Provenance87,
+    Provenance88,
+    Provenance89,
+    Provenance90,
+    Provenance91,
+    Provenance92,
+    Provenance93,
+    Provenance94,
+    Provenance95,
+    RenderGuidance82,
+    RenderGuidance83,
+    RenderGuidance84,
+    RenderGuidance85,
+    RenderGuidance86,
+    RenderGuidance87,
+    RenderGuidance88,
+    RenderGuidance89,
+    RenderGuidance90,
+    RenderGuidance91,
+    RenderGuidance92,
+    RenderGuidance93,
+    RenderGuidance94,
+    ResponseType,
+    Role108,
+    SupportedMacros,
+    TrackingEvent,
+    TrackingEvent18,
+    Type33,
+    Type34,
+    UrlType,
+    Use,
+    VerificationItem82,
+    VerificationItem83,
+    VerificationItem84,
+    VerificationItem85,
+    VerificationItem86,
+    VerificationItem87,
+    VerificationItem88,
+    VerificationItem89,
+    VerificationItem90,
+    VerificationItem91,
+    VerificationItem92,
+    VerificationItem93,
+    VerificationItem94,
+    Viewability2,
+)
+from adcp.types.generated_poc.bundled.creative.get_creative_features_request import (
+    Account13,
+    Assets132,
+    Assets133,
+    Assets134,
+    Assets135,
+    Assets136,
+    Assets137,
+    Assets138,
+    Assets139,
+    Assets140,
+    Assets141,
+    Assets142,
+    Assets143,
+    Assets144,
+    Assets145,
+    Assets146,
+    ConversionEvent,
+    DeclaredBy100,
+    DeclaredBy101,
+    DeclaredBy102,
+    DeclaredBy103,
+    DeclaredBy104,
+    DeclaredBy105,
+    DeclaredBy106,
+    DeclaredBy107,
+    DeclaredBy108,
+    DeclaredBy96,
+    DeclaredBy97,
+    DeclaredBy98,
+    DeclaredBy99,
+    Disclosure100,
+    Disclosure101,
+    Disclosure102,
+    Disclosure103,
+    Disclosure104,
+    Disclosure105,
+    Disclosure106,
+    Disclosure107,
+    Disclosure108,
+    Disclosure109,
+    Disclosure97,
+    Disclosure98,
+    Disclosure99,
+    Jurisdiction102,
+    Jurisdiction103,
+    Jurisdiction104,
+    Jurisdiction105,
+    Jurisdiction106,
+    Jurisdiction107,
+    Jurisdiction108,
+    Jurisdiction109,
+    Jurisdiction110,
+    Jurisdiction111,
+    Jurisdiction112,
+    Jurisdiction113,
+    Jurisdiction114,
+    Jurisdiction115,
+    Method11,
+    Provenance100,
+    Provenance101,
+    Provenance102,
+    Provenance103,
+    Provenance104,
+    Provenance105,
+    Provenance106,
+    Provenance107,
+    Provenance108,
+    Provenance109,
+    Provenance97,
+    Provenance98,
+    Provenance99,
+    RenderGuidance100,
+    RenderGuidance101,
+    RenderGuidance102,
+    RenderGuidance103,
+    RenderGuidance104,
+    RenderGuidance105,
+    RenderGuidance106,
+    RenderGuidance107,
+    RenderGuidance108,
+    RenderGuidance96,
+    RenderGuidance97,
+    RenderGuidance98,
+    RenderGuidance99,
+    Role123,
+    TrackingEvent22,
+    Type36,
+    VerificationItem100,
+    VerificationItem101,
+    VerificationItem102,
+    VerificationItem103,
+    VerificationItem104,
+    VerificationItem105,
+    VerificationItem106,
+    VerificationItem107,
+    VerificationItem108,
+    VerificationItem96,
+    VerificationItem97,
+    VerificationItem98,
+    VerificationItem99,
+)
+from adcp.types.generated_poc.bundled.creative.get_creative_features_response import (
+    Consumption,
+    GetCreativeFeaturesResponse3,
+    GetCreativeFeaturesResponse4,
+)
+from adcp.types.generated_poc.bundled.creative.list_creative_formats_request import (
+    Account26,
+    DisclosurePersistenceEnum,
+    InputFormatId,
+    OutputFormatId,
+)
+from adcp.types.generated_poc.bundled.creative.list_creative_formats_response import (
+    AcceptsParameter,
+    AssetRequirements14,
+    AssetRequirements15,
+    AssetRequirements16,
+    AssetRequirements17,
+    AssetRequirements18,
+    AssetRequirements19,
+    AssetRequirements20,
+    AssetRequirements21,
+    AssetRequirements22,
+    AssetRequirements23,
+    AssetRequirements24,
+    Assets187,
+    Assets188,
+    Assets189,
+    Assets190,
+    Assets191,
+    Assets192,
+    Assets193,
+    Assets194,
+    Assets195,
+    Assets196,
+    Assets197,
+    Assets198,
+    Assets199,
+    Assets200,
+    Assets201,
+    Assets202,
+    Assets203,
+    Assets204,
+    Assets205,
+    Assets206,
+    Assets207,
+    Assets208,
+    Assets209,
+    Assets210,
+    Assets211,
+    Assets212,
+    Bleed10,
+    Bleed11,
+    Bleed12,
+    Bleed13,
+    Bleed9,
+    Capability,
+    Dimensions11,
+    FieldBindings,
+    Format12,
+    Format14,
+    PersistenceEnum,
+    PricingOption151,
+    PricingOption152,
+    PricingOption153,
+    PricingOption154,
+    PricingOption155,
+    PricingOption156,
+    PricingOption157,
+    PricingOption158,
+    PricingOption159,
+    Renders11,
+    ReportedMetric,
+    Requirements,
+    Requirements26,
+    Requirements27,
+    Requirements28,
+    Requirements29,
+    Requirements30,
+    Requirements31,
+    Requirements32,
+    Requirements33,
+    Requirements34,
+    Requirements35,
+    Requirements36,
+    Requirements37,
+    Requirements38,
+    Requirements39,
+    Requirements40,
+    Requirements41,
+    Requirements42,
+    Requirements43,
+    Requirements44,
+    Requirements45,
+    Requirements46,
+    Requirements47,
+    Requirements48,
+    Requirements49,
+    SupportedDisclosurePosition,
+)
+from adcp.types.generated_poc.bundled.creative.list_creatives_request import (
+    Account28,
+    Accounts,
+    Accounts1,
+    Field5,
+)
+from adcp.types.generated_poc.bundled.creative.list_creatives_response import (
+    Assets214,
+    Assets215,
+    Assets216,
+    Assets217,
+    Assets218,
+    Assets219,
+    Assets220,
+    Assets221,
+    Assets222,
+    Assets223,
+    Assets224,
+    Assets225,
+    Assets226,
+    Assets227,
+    Assets228,
+    BillingEntity,
+    DeclaredBy125,
+    DeclaredBy126,
+    DeclaredBy127,
+    DeclaredBy128,
+    DeclaredBy129,
+    DeclaredBy130,
+    DeclaredBy131,
+    DeclaredBy132,
+    DeclaredBy133,
+    DeclaredBy134,
+    DeclaredBy135,
+    DeclaredBy136,
+    Disclosure126,
+    Disclosure127,
+    Disclosure128,
+    Disclosure129,
+    Disclosure130,
+    Disclosure131,
+    Disclosure132,
+    Disclosure133,
+    Disclosure134,
+    Disclosure135,
+    Disclosure136,
+    Disclosure137,
+    Items,
+    Items1,
+    Jurisdiction132,
+    Jurisdiction133,
+    Jurisdiction134,
+    Jurisdiction135,
+    Jurisdiction136,
+    Jurisdiction137,
+    Jurisdiction138,
+    Jurisdiction139,
+    Jurisdiction140,
+    Jurisdiction141,
+    Jurisdiction142,
+    Jurisdiction143,
+    Jurisdiction144,
+    Method22,
+    PricingOption161,
+    PricingOption162,
+    PricingOption163,
+    PricingOption164,
+    PricingOption165,
+    PricingOption166,
+    PricingOption167,
+    PricingOption168,
+    PricingOption169,
+    Provenance126,
+    Provenance127,
+    Provenance128,
+    Provenance129,
+    Provenance130,
+    Provenance131,
+    Provenance132,
+    Provenance133,
+    Provenance134,
+    Provenance135,
+    Provenance136,
+    Provenance137,
+    RenderGuidance125,
+    RenderGuidance126,
+    RenderGuidance127,
+    RenderGuidance128,
+    RenderGuidance129,
+    RenderGuidance130,
+    RenderGuidance131,
+    RenderGuidance132,
+    RenderGuidance133,
+    RenderGuidance134,
+    RenderGuidance135,
+    RenderGuidance136,
+    Role153,
+    Role166,
+    Status22,
+    TrackingEvent26,
+    Variable,
+    VerificationItem125,
+    VerificationItem126,
+    VerificationItem127,
+    VerificationItem128,
+    VerificationItem129,
+    VerificationItem130,
+    VerificationItem131,
+    VerificationItem132,
+    VerificationItem133,
+    VerificationItem134,
+    VerificationItem135,
+    VerificationItem136,
+)
+from adcp.types.generated_poc.bundled.creative.preview_creative_request import (
+    Assets246,
+    Assets247,
+    Assets248,
+    Assets249,
+    Assets250,
+    Assets251,
+    Assets252,
+    Assets253,
+    Assets254,
+    Assets255,
+    Assets256,
+    Assets257,
+    Assets258,
+    Assets259,
+    Assets260,
+    Assets261,
+    Assets262,
+    Assets263,
+    Assets264,
+    Assets265,
+    Assets266,
+    Assets267,
+    Assets268,
+    Assets269,
+    Assets270,
+    Assets271,
+    Assets272,
+    Assets273,
+    Assets274,
+    Assets275,
+    Assets276,
+    Compliance10,
+    CreativeManifest6,
+    DeclaredBy152,
+    DeclaredBy153,
+    DeclaredBy154,
+    DeclaredBy155,
+    DeclaredBy156,
+    DeclaredBy157,
+    DeclaredBy158,
+    DeclaredBy159,
+    DeclaredBy160,
+    DeclaredBy161,
+    DeclaredBy162,
+    DeclaredBy163,
+    DeclaredBy164,
+    DeclaredBy165,
+    DeclaredBy166,
+    DeclaredBy167,
+    DeclaredBy168,
+    DeclaredBy169,
+    DeclaredBy170,
+    DeclaredBy171,
+    DeclaredBy172,
+    DeclaredBy173,
+    DeclaredBy174,
+    DeclaredBy175,
+    DeclaredBy176,
+    DeclaredBy177,
+    DeclaredBy178,
+    Disclosure153,
+    Disclosure154,
+    Disclosure155,
+    Disclosure156,
+    Disclosure157,
+    Disclosure158,
+    Disclosure159,
+    Disclosure160,
+    Disclosure161,
+    Disclosure162,
+    Disclosure163,
+    Disclosure164,
+    Disclosure165,
+    Disclosure166,
+    Disclosure167,
+    Disclosure168,
+    Disclosure169,
+    Disclosure170,
+    Disclosure171,
+    Disclosure172,
+    Disclosure173,
+    Disclosure174,
+    Disclosure175,
+    Disclosure176,
+    Disclosure177,
+    Disclosure178,
+    Disclosure179,
+    FeedFieldMapping13,
+    IndustryIdentifier8,
+    Input10,
+    Jurisdiction161,
+    Jurisdiction162,
+    Jurisdiction163,
+    Jurisdiction164,
+    Jurisdiction165,
+    Jurisdiction166,
+    Jurisdiction167,
+    Jurisdiction168,
+    Jurisdiction169,
+    Jurisdiction170,
+    Jurisdiction171,
+    Jurisdiction172,
+    Jurisdiction173,
+    Jurisdiction174,
+    Jurisdiction175,
+    Jurisdiction176,
+    Jurisdiction177,
+    Jurisdiction178,
+    Jurisdiction179,
+    Jurisdiction180,
+    Jurisdiction181,
+    Jurisdiction182,
+    Jurisdiction183,
+    Jurisdiction184,
+    Jurisdiction185,
+    Jurisdiction186,
+    Jurisdiction187,
+    Jurisdiction188,
+    Jurisdiction189,
+    Method26,
+    OutputFormat,
+    Provenance153,
+    Provenance154,
+    Provenance155,
+    Provenance156,
+    Provenance157,
+    Provenance158,
+    Provenance159,
+    Provenance160,
+    Provenance161,
+    Provenance162,
+    Provenance163,
+    Provenance164,
+    Provenance165,
+    Provenance166,
+    Provenance167,
+    Provenance168,
+    Provenance169,
+    Provenance170,
+    Provenance171,
+    Provenance172,
+    Provenance173,
+    Provenance174,
+    Provenance175,
+    Provenance176,
+    Provenance177,
+    Provenance178,
+    Provenance179,
+    Quality,
+    ReferenceAsset9,
+    RenderGuidance152,
+    RenderGuidance153,
+    RenderGuidance154,
+    RenderGuidance155,
+    RenderGuidance156,
+    RenderGuidance157,
+    RenderGuidance158,
+    RenderGuidance159,
+    RenderGuidance160,
+    RenderGuidance161,
+    RenderGuidance162,
+    RenderGuidance163,
+    RenderGuidance164,
+    RenderGuidance165,
+    RenderGuidance166,
+    RenderGuidance167,
+    RenderGuidance168,
+    RenderGuidance169,
+    RenderGuidance170,
+    RenderGuidance171,
+    RenderGuidance172,
+    RenderGuidance173,
+    RenderGuidance174,
+    RenderGuidance175,
+    RenderGuidance176,
+    RenderGuidance177,
+    RenderGuidance178,
+    RequiredDisclosure10,
+    Right7,
+    Role195,
+    Security9,
+    TrackingEvent34,
+    Type65,
+    VerificationItem152,
+    VerificationItem153,
+    VerificationItem154,
+    VerificationItem155,
+    VerificationItem156,
+    VerificationItem157,
+    VerificationItem158,
+    VerificationItem159,
+    VerificationItem160,
+    VerificationItem161,
+    VerificationItem162,
+    VerificationItem163,
+    VerificationItem164,
+    VerificationItem165,
+    VerificationItem166,
+    VerificationItem167,
+    VerificationItem168,
+    VerificationItem169,
+    VerificationItem170,
+    VerificationItem171,
+    VerificationItem172,
+    VerificationItem173,
+    VerificationItem174,
+    VerificationItem175,
+    VerificationItem176,
+    VerificationItem177,
+    VerificationItem178,
+)
+from adcp.types.generated_poc.bundled.creative.preview_creative_response import (
+    Assets278,
+    Assets279,
+    Assets280,
+    Assets281,
+    Assets282,
+    Assets283,
+    Assets284,
+    Assets285,
+    Assets286,
+    Assets287,
+    Assets288,
+    Assets289,
+    Assets290,
+    Assets291,
+    Assets292,
+    DeclaredBy180,
+    DeclaredBy181,
+    DeclaredBy182,
+    DeclaredBy183,
+    DeclaredBy184,
+    DeclaredBy185,
+    DeclaredBy186,
+    DeclaredBy187,
+    DeclaredBy188,
+    DeclaredBy189,
+    DeclaredBy190,
+    DeclaredBy191,
+    DeclaredBy192,
+    Disclosure181,
+    Disclosure182,
+    Disclosure183,
+    Disclosure184,
+    Disclosure185,
+    Disclosure186,
+    Disclosure187,
+    Disclosure188,
+    Disclosure189,
+    Disclosure190,
+    Disclosure191,
+    Disclosure192,
+    Disclosure193,
+    Error22,
+    Input15,
+    Jurisdiction191,
+    Jurisdiction192,
+    Jurisdiction193,
+    Jurisdiction194,
+    Jurisdiction195,
+    Jurisdiction196,
+    Jurisdiction197,
+    Jurisdiction198,
+    Jurisdiction199,
+    Jurisdiction200,
+    Jurisdiction201,
+    Jurisdiction202,
+    Jurisdiction203,
+    Jurisdiction204,
+    Method30,
+    Preview13,
+    Preview14,
+    Preview15,
+    PreviewCreativeResponse4,
+    PreviewCreativeResponse5,
+    PreviewCreativeResponse6,
+    Provenance181,
+    Provenance182,
+    Provenance183,
+    Provenance184,
+    Provenance185,
+    Provenance186,
+    Provenance187,
+    Provenance188,
+    Provenance189,
+    Provenance190,
+    Provenance191,
+    Provenance192,
+    Provenance193,
+    RenderGuidance180,
+    RenderGuidance181,
+    RenderGuidance182,
+    RenderGuidance183,
+    RenderGuidance184,
+    RenderGuidance185,
+    RenderGuidance186,
+    RenderGuidance187,
+    RenderGuidance188,
+    RenderGuidance189,
+    RenderGuidance190,
+    RenderGuidance191,
+    RenderGuidance192,
+    Renders13,
+    Renders14,
+    Renders15,
+    Renders16,
+    Renders17,
+    Renders18,
+    Renders19,
+    Renders20,
+    Renders21,
+    Renders22,
+    Renders23,
+    Response3,
+    Results3,
+    Role225,
+    TrackingEvent42,
+    Type69,
+    VerificationItem180,
+    VerificationItem181,
+    VerificationItem182,
+    VerificationItem183,
+    VerificationItem184,
+    VerificationItem185,
+    VerificationItem186,
+    VerificationItem187,
+    VerificationItem188,
+    VerificationItem189,
+    VerificationItem190,
+    VerificationItem191,
+    VerificationItem192,
+)
+from adcp.types.generated_poc.bundled.creative.sync_creatives_request import (
+    Account37,
+    Assets294,
+    Assets295,
+    Assets296,
+    Assets297,
+    Assets298,
+    Assets299,
+    Assets300,
+    Assets301,
+    Assets302,
+    Assets303,
+    Assets304,
+    Assets305,
+    Assets306,
+    Assets307,
+    Assets308,
+    DeclaredBy195,
+    DeclaredBy196,
+    DeclaredBy197,
+    DeclaredBy198,
+    DeclaredBy199,
+    DeclaredBy200,
+    DeclaredBy201,
+    DeclaredBy202,
+    DeclaredBy203,
+    DeclaredBy204,
+    DeclaredBy205,
+    DeclaredBy206,
+    DeclaredBy207,
+    Disclosure196,
+    Disclosure197,
+    Disclosure198,
+    Disclosure199,
+    Disclosure200,
+    Disclosure201,
+    Disclosure202,
+    Disclosure203,
+    Disclosure204,
+    Disclosure205,
+    Disclosure206,
+    Disclosure207,
+    Disclosure208,
+    Jurisdiction207,
+    Jurisdiction208,
+    Jurisdiction209,
+    Jurisdiction210,
+    Jurisdiction211,
+    Jurisdiction212,
+    Jurisdiction213,
+    Jurisdiction214,
+    Jurisdiction215,
+    Jurisdiction216,
+    Jurisdiction217,
+    Jurisdiction218,
+    Jurisdiction219,
+    Jurisdiction220,
+    Method32,
+    Provenance195,
+    Provenance196,
+    Provenance197,
+    Provenance198,
+    Provenance199,
+    Provenance200,
+    Provenance201,
+    Provenance202,
+    Provenance203,
+    Provenance204,
+    Provenance205,
+    Provenance206,
+    Provenance207,
+    RenderGuidance195,
+    RenderGuidance196,
+    RenderGuidance197,
+    RenderGuidance198,
+    RenderGuidance199,
+    RenderGuidance200,
+    RenderGuidance201,
+    RenderGuidance202,
+    RenderGuidance203,
+    RenderGuidance204,
+    RenderGuidance205,
+    RenderGuidance206,
+    RenderGuidance207,
+    Role242,
+    Scheme,
+    TrackingEvent46,
+    Type88,
+    VerificationItem195,
+    VerificationItem196,
+    VerificationItem197,
+    VerificationItem198,
+    VerificationItem199,
+    VerificationItem200,
+    VerificationItem201,
+    VerificationItem202,
+    VerificationItem203,
+    VerificationItem204,
+    VerificationItem205,
+    VerificationItem206,
+    VerificationItem207,
+)
+from adcp.types.generated_poc.bundled.creative.sync_creatives_response import (
+    Error34,
+    SyncCreativesResponse3,
+    SyncCreativesResponse4,
+)
+from adcp.types.generated_poc.bundled.media_buy.build_creative_request import (
+    Account4,
+    Assets10,
+    Assets11,
+    Assets12,
+    Assets13,
+    Assets14,
+    Assets15,
+    Assets16,
+    Assets17,
+    Assets18,
+    Assets19,
+    Assets5,
+    Assets6,
+    Assets7,
+    Assets8,
+    Assets9,
+    DeclaredBy1,
+    DeclaredBy10,
+    DeclaredBy11,
+    DeclaredBy12,
+    DeclaredBy13,
+    DeclaredBy2,
+    DeclaredBy3,
+    DeclaredBy4,
+    DeclaredBy5,
+    DeclaredBy6,
+    DeclaredBy7,
+    DeclaredBy8,
+    DeclaredBy9,
+    Disclosure10,
+    Disclosure11,
+    Disclosure12,
+    Disclosure13,
+    Disclosure14,
+    Disclosure2,
+    Disclosure3,
+    Disclosure4,
+    Disclosure5,
+    Disclosure6,
+    Disclosure7,
+    Disclosure8,
+    Disclosure9,
+    Jurisdiction1,
+    Jurisdiction10,
+    Jurisdiction11,
+    Jurisdiction12,
+    Jurisdiction13,
+    Jurisdiction14,
+    Jurisdiction2,
+    Jurisdiction3,
+    Jurisdiction4,
+    Jurisdiction5,
+    Jurisdiction6,
+    Jurisdiction7,
+    Jurisdiction8,
+    Jurisdiction9,
+    Method1,
+    Provenance10,
+    Provenance11,
+    Provenance12,
+    Provenance13,
+    Provenance14,
+    Provenance2,
+    Provenance3,
+    Provenance4,
+    Provenance5,
+    Provenance6,
+    Provenance7,
+    Provenance8,
+    Provenance9,
+    RenderGuidance1,
+    RenderGuidance10,
+    RenderGuidance11,
+    RenderGuidance12,
+    RenderGuidance13,
+    RenderGuidance2,
+    RenderGuidance3,
+    RenderGuidance4,
+    RenderGuidance5,
+    RenderGuidance6,
+    RenderGuidance7,
+    RenderGuidance8,
+    RenderGuidance9,
+    Role14,
+    TargetFormatId,
+    TrackingEvent2,
+    Type4,
+    VerificationItem1,
+    VerificationItem10,
+    VerificationItem11,
+    VerificationItem12,
+    VerificationItem13,
+    VerificationItem2,
+    VerificationItem3,
+    VerificationItem4,
+    VerificationItem5,
+    VerificationItem6,
+    VerificationItem7,
+    VerificationItem8,
+    VerificationItem9,
+)
+from adcp.types.generated_poc.bundled.media_buy.build_creative_response import (
+    Assets21,
+    Assets22,
+    Assets23,
+    Assets24,
+    Assets25,
+    Assets26,
+    Assets27,
+    Assets28,
+    Assets29,
+    Assets30,
+    Assets31,
+    Assets32,
+    Assets33,
+    Assets34,
+    Assets35,
+    Assets36,
+    Assets37,
+    Assets38,
+    Assets39,
+    Assets40,
+    Assets41,
+    Assets42,
+    Assets43,
+    Assets44,
+    Assets45,
+    Assets46,
+    Assets47,
+    Assets48,
+    Assets49,
+    Assets50,
+    Assets51,
+    BuildCreativeResponse4,
+    BuildCreativeResponse5,
+    BuildCreativeResponse6,
+    Compliance2,
+    CreativeManifest3,
+    DeclaredBy15,
+    DeclaredBy16,
+    DeclaredBy17,
+    DeclaredBy18,
+    DeclaredBy19,
+    DeclaredBy20,
+    DeclaredBy21,
+    DeclaredBy22,
+    DeclaredBy23,
+    DeclaredBy24,
+    DeclaredBy25,
+    DeclaredBy26,
+    DeclaredBy27,
+    DeclaredBy28,
+    DeclaredBy29,
+    DeclaredBy30,
+    DeclaredBy31,
+    DeclaredBy32,
+    DeclaredBy33,
+    DeclaredBy34,
+    DeclaredBy35,
+    DeclaredBy36,
+    DeclaredBy37,
+    DeclaredBy38,
+    DeclaredBy39,
+    DeclaredBy40,
+    DeclaredBy41,
+    Disclosure16,
+    Disclosure17,
+    Disclosure18,
+    Disclosure19,
+    Disclosure20,
+    Disclosure21,
+    Disclosure22,
+    Disclosure23,
+    Disclosure24,
+    Disclosure25,
+    Disclosure26,
+    Disclosure27,
+    Disclosure28,
+    Disclosure29,
+    Disclosure30,
+    Disclosure31,
+    Disclosure32,
+    Disclosure33,
+    Disclosure34,
+    Disclosure35,
+    Disclosure36,
+    Disclosure37,
+    Disclosure38,
+    Disclosure39,
+    Disclosure40,
+    Disclosure41,
+    Disclosure42,
+    FeedFieldMapping2,
+    IndustryIdentifier2,
+    Input3,
+    Jurisdiction16,
+    Jurisdiction17,
+    Jurisdiction18,
+    Jurisdiction19,
+    Jurisdiction20,
+    Jurisdiction21,
+    Jurisdiction22,
+    Jurisdiction23,
+    Jurisdiction24,
+    Jurisdiction25,
+    Jurisdiction26,
+    Jurisdiction27,
+    Jurisdiction28,
+    Jurisdiction29,
+    Jurisdiction30,
+    Jurisdiction31,
+    Jurisdiction32,
+    Jurisdiction33,
+    Jurisdiction34,
+    Jurisdiction35,
+    Jurisdiction36,
+    Jurisdiction37,
+    Jurisdiction38,
+    Jurisdiction39,
+    Jurisdiction40,
+    Jurisdiction41,
+    Jurisdiction42,
+    Jurisdiction43,
+    Jurisdiction44,
+    Method3,
+    Preview4,
+    Preview6,
+    Preview7,
+    PreviewError,
+    PreviewError1,
+    Provenance16,
+    Provenance17,
+    Provenance18,
+    Provenance19,
+    Provenance20,
+    Provenance21,
+    Provenance22,
+    Provenance23,
+    Provenance24,
+    Provenance25,
+    Provenance26,
+    Provenance27,
+    Provenance28,
+    Provenance29,
+    Provenance30,
+    Provenance31,
+    Provenance32,
+    Provenance33,
+    Provenance34,
+    Provenance35,
+    Provenance36,
+    Provenance37,
+    Provenance38,
+    Provenance39,
+    Provenance40,
+    Provenance41,
+    Provenance42,
+    ReferenceAsset2,
+    RenderGuidance15,
+    RenderGuidance16,
+    RenderGuidance17,
+    RenderGuidance18,
+    RenderGuidance19,
+    RenderGuidance20,
+    RenderGuidance21,
+    RenderGuidance22,
+    RenderGuidance23,
+    RenderGuidance24,
+    RenderGuidance25,
+    RenderGuidance26,
+    RenderGuidance27,
+    RenderGuidance28,
+    RenderGuidance29,
+    RenderGuidance30,
+    RenderGuidance31,
+    RenderGuidance32,
+    RenderGuidance33,
+    RenderGuidance34,
+    RenderGuidance35,
+    RenderGuidance36,
+    RenderGuidance37,
+    RenderGuidance38,
+    RenderGuidance39,
+    RenderGuidance40,
+    RenderGuidance41,
+    Renders1,
+    Renders2,
+    Renders3,
+    Renders4,
+    Renders5,
+    RequiredDisclosure2,
+    Right2,
+    Role29,
+    Security2,
+    TrackingEvent6,
+    Type6,
+    VerificationItem15,
+    VerificationItem16,
+    VerificationItem17,
+    VerificationItem18,
+    VerificationItem19,
+    VerificationItem20,
+    VerificationItem21,
+    VerificationItem22,
+    VerificationItem23,
+    VerificationItem24,
+    VerificationItem25,
+    VerificationItem26,
+    VerificationItem27,
+    VerificationItem28,
+    VerificationItem29,
+    VerificationItem30,
+    VerificationItem31,
+    VerificationItem32,
+    VerificationItem33,
+    VerificationItem34,
+    VerificationItem35,
+    VerificationItem36,
+    VerificationItem37,
+    VerificationItem38,
+    VerificationItem39,
+    VerificationItem40,
+    VerificationItem41,
+)
+from adcp.types.generated_poc.bundled.media_buy.create_media_buy_request import (
+    AcceptedMethod,
+    Account6,
+    Assets65,
+    Assets66,
+    Assets67,
+    Assets68,
+    Assets69,
+    Assets70,
+    Assets71,
+    Assets72,
+    Assets73,
+    Assets74,
+    Assets75,
+    Assets76,
+    Assets77,
+    Assets78,
+    Assets79,
+    Authentication2,
+    Authentication3,
+    AvailableRemedy,
+    CollectionListExclude,
+    Day,
+    DeclaredBy58,
+    DeclaredBy59,
+    DeclaredBy60,
+    DeclaredBy61,
+    DeclaredBy62,
+    DeclaredBy63,
+    DeclaredBy64,
+    DeclaredBy65,
+    DeclaredBy66,
+    DeclaredBy67,
+    DeclaredBy68,
+    DeclaredBy69,
+    DeclaredBy70,
+    DevicePlatformEnum,
+    DeviceTypeEnum,
+    Disclosure59,
+    Disclosure60,
+    Disclosure61,
+    Disclosure62,
+    Disclosure63,
+    Disclosure64,
+    Disclosure65,
+    Disclosure66,
+    Disclosure67,
+    Disclosure68,
+    Disclosure69,
+    Disclosure70,
+    Disclosure71,
+    FeedFieldMapping4,
+    FrequencyCap1,
+    FrequencyCap2,
+    GeoProximity1,
+    GeoProximity2,
+    Geometry2,
+    Geometry3,
+    InvoiceRecipient,
+    Jurisdiction61,
+    Jurisdiction62,
+    Jurisdiction63,
+    Jurisdiction64,
+    Jurisdiction65,
+    Jurisdiction66,
+    Jurisdiction67,
+    Jurisdiction68,
+    Jurisdiction69,
+    Jurisdiction70,
+    Jurisdiction71,
+    Jurisdiction72,
+    Jurisdiction73,
+    Jurisdiction74,
+    Method7,
+    Metric1,
+    OptimizationGoals,
+    OptimizationGoals1,
+    Per,
+    PostClick,
+    PostView,
+    Provenance59,
+    Provenance60,
+    Provenance61,
+    Provenance62,
+    Provenance63,
+    Provenance64,
+    Provenance65,
+    Provenance66,
+    Provenance67,
+    Provenance68,
+    Provenance69,
+    Provenance70,
+    Provenance71,
+    Radius2,
+    Radius3,
+    RenderGuidance58,
+    RenderGuidance59,
+    RenderGuidance60,
+    RenderGuidance61,
+    RenderGuidance62,
+    RenderGuidance63,
+    RenderGuidance64,
+    RenderGuidance65,
+    RenderGuidance66,
+    RenderGuidance67,
+    RenderGuidance68,
+    RenderGuidance69,
+    RenderGuidance70,
+    RequestedMetric,
+    Role78,
+    Role80,
+    Suppress,
+    Suppress1,
+    Suppress2,
+    System,
+    System2,
+    Target1,
+    Target2,
+    Target3,
+    Target4,
+    TargetFrequency1,
+    TrackingEvent14,
+    TravelTime2,
+    TravelTime3,
+    Type13,
+    Type17,
+    Unit11,
+    Unit12,
+    Vendor,
+    VerificationItem58,
+    VerificationItem59,
+    VerificationItem60,
+    VerificationItem61,
+    VerificationItem62,
+    VerificationItem63,
+    VerificationItem64,
+    VerificationItem65,
+    VerificationItem66,
+    VerificationItem67,
+    VerificationItem68,
+    VerificationItem69,
+    VerificationItem70,
+    Window,
+    Window1,
+    Window2,
+    Window3,
+    Window4,
+)
+from adcp.types.generated_poc.bundled.media_buy.create_media_buy_response import (
+    Adjustments1,
+    AudienceTargeting1,
+    AudienceTargeting2,
+    AudienceTargeting3,
+    Contact5,
+    CreateMediaBuyResponse3,
+    CreateMediaBuyResponse4,
+    FormatIdsToProvideItem,
+    FrequencyCap4,
+    FrequencyCap5,
+    FrequencyCap6,
+    FrequencyCap7,
+    FrequencyCap8,
+    GeoProximity4,
+    GeoProximity5,
+    Geometry5,
+    Geometry6,
+    Metric3,
+    OptimizationGoals3,
+    Radius5,
+    Radius6,
+    SignalId2,
+    Status6,
+    Suppress4,
+    Suppress5,
+    Suppress6,
+    Suppress7,
+    Suppress8,
+    System6,
+    Target6,
+    Target7,
+    Target8,
+    Target9,
+    TargetFrequency3,
+    TravelTime5,
+    TravelTime6,
+    Type19,
+    Unit23,
+    Unit24,
+    Window10,
+    Window11,
+    Window12,
+    Window6,
+    Window7,
+    Window8,
+    Window9,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_media_buy_delivery_request import (
+    Account17,
+    GeoLevel,
+    SortBy,
+    StatusFilter2,
+    System9,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_media_buy_delivery_response import (
+    ByActionSourceItem10,
+    ByActionSourceItem11,
+    ByActionSourceItem12,
+    ByActionSourceItem4,
+    ByActionSourceItem5,
+    ByActionSourceItem6,
+    ByActionSourceItem7,
+    ByActionSourceItem8,
+    ByActionSourceItem9,
+    ByEventTypeItem10,
+    ByEventTypeItem11,
+    ByEventTypeItem12,
+    ByEventTypeItem4,
+    ByEventTypeItem5,
+    ByEventTypeItem6,
+    ByEventTypeItem7,
+    ByEventTypeItem8,
+    ByEventTypeItem9,
+    DailyBreakdownItem3,
+    DoohMetrics10,
+    DoohMetrics11,
+    DoohMetrics12,
+    DoohMetrics4,
+    DoohMetrics5,
+    DoohMetrics6,
+    DoohMetrics7,
+    DoohMetrics8,
+    DoohMetrics9,
+    Viewability10,
+    Viewability11,
+    Viewability12,
+    Viewability4,
+    Viewability5,
+    Viewability6,
+    Viewability7,
+    Viewability8,
+    Viewability9,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_media_buys_request import (
+    Account19,
+    StatusFilter5,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_media_buys_response import (
+    Cancellation4,
+    Contact7,
+    FormatIdsPendingItem,
+    Status11,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_products_request import (
+    Account22,
+    Action5,
+    BudgetRange1,
+    GeoProximity10,
+    GeoProximity9,
+    Geometry8,
+    Geometry9,
+    PreferredDeliveryType,
+    Radius8,
+    Radius9,
+    Refine4,
+    Refine5,
+    RequiredFeatures,
+    RequiredPerformanceStandard,
+    SignalId9,
+    SignalTargeting1,
+    SignalTargeting2,
+    SignalTargeting3,
+    System11,
+    TimeBudget,
+    TravelTime8,
+    TravelTime9,
+    Type39,
+    Unit47,
+    Unit52,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_products_response import (
+    AdInventory,
+    Adjustments10,
+    Adjustments11,
+    Adjustments12,
+    Adjustments13,
+    Adjustments14,
+    Adjustments15,
+    Adjustments16,
+    Adjustments17,
+    Adjustments18,
+    Adjustments19,
+    Adjustments3,
+    Adjustments4,
+    Adjustments5,
+    Adjustments6,
+    Adjustments7,
+    Adjustments8,
+    Adjustments9,
+    Allocation,
+    AudienceSize,
+    AudienceSize1,
+    AudienceSize2,
+    AudienceSize3,
+    AudienceSize4,
+    AudienceSize5,
+    AvailableReportingFrequency,
+    Clicks,
+    Clicks1,
+    Clicks2,
+    Clicks3,
+    Clicks4,
+    Clicks5,
+    CoBranding,
+    CompletedViews,
+    CompletedViews1,
+    CompletedViews2,
+    CompletedViews3,
+    CompletedViews4,
+    CompletedViews5,
+    DataProviderSignals,
+    DataProviderSignals1,
+    DataProviderSignals2,
+    DataProviderSignals3,
+    Deadlines,
+    Downloads,
+    Downloads1,
+    Downloads2,
+    Downloads3,
+    Downloads4,
+    Downloads5,
+    Engagements,
+    Engagements1,
+    Engagements2,
+    Engagements3,
+    Engagements4,
+    Engagements5,
+    EstimatedWait,
+    Follows,
+    Follows1,
+    Follows2,
+    Follows3,
+    Follows4,
+    Follows5,
+    Forecast,
+    Forecast1,
+    Forecast2,
+    Frequency,
+    Frequency1,
+    Frequency2,
+    Frequency3,
+    Frequency4,
+    Frequency5,
+    Grps,
+    Grps1,
+    Grps2,
+    Grps3,
+    Grps4,
+    Grps5,
+    GuestTalentItem,
+    Impressions,
+    Impressions1,
+    Impressions2,
+    Impressions3,
+    Impressions4,
+    Impressions5,
+    Issue,
+    LandingPage,
+    MeasuredImpressions,
+    MeasuredImpressions1,
+    MeasuredImpressions2,
+    MeasuredImpressions3,
+    MeasuredImpressions4,
+    MeasuredImpressions5,
+    Metrics2,
+    Metrics3,
+    NoticePeriod,
+    Parameters4,
+    Parameters5,
+    Parameters6,
+    Plays,
+    Plays1,
+    Plays2,
+    Plays3,
+    Plays4,
+    Plays5,
+    Point,
+    Point1,
+    Point2,
+    PriceBreakdown10,
+    PriceBreakdown3,
+    PriceBreakdown4,
+    PriceBreakdown5,
+    PriceBreakdown6,
+    PriceBreakdown7,
+    PriceBreakdown8,
+    PriceBreakdown9,
+    PricingOptions,
+    PricingOptions1,
+    PricingOptions2,
+    PricingOptions3,
+    PricingOptions4,
+    PricingOptions5,
+    PricingOptions6,
+    PricingOptions7,
+    PricingOptions8,
+    ProfileVisits,
+    ProfileVisits1,
+    ProfileVisits2,
+    ProfileVisits3,
+    ProfileVisits4,
+    ProfileVisits5,
+    PublisherProperties,
+    PublisherProperties1,
+    PublisherProperties2,
+    PublisherProperties3,
+    Reach,
+    Reach1,
+    Reach2,
+    Reach3,
+    Reach4,
+    Reach5,
+    RequiredEventType,
+    Saves,
+    Saves1,
+    Saves2,
+    Saves3,
+    Saves4,
+    Saves5,
+    Scope5,
+    Spend2,
+    Spend3,
+    Spend4,
+    Spend5,
+    Spend6,
+    Status17,
+    Status18,
+    SupportedTarget1,
+    SupportsGeoBreakdown,
+    Type43,
+    ViewThreshold3,
+    Views,
+    Views1,
+    Views2,
+    Views3,
+    Views4,
+    Views5,
+)
+from adcp.types.generated_poc.bundled.media_buy.list_creative_formats_response import (
+    AssetRequirements10,
+    AssetRequirements11,
+    AssetRequirements12,
+    AssetRequirements2,
+    AssetRequirements3,
+    AssetRequirements4,
+    AssetRequirements5,
+    AssetRequirements6,
+    AssetRequirements7,
+    AssetRequirements8,
+    AssetRequirements9,
+    Assets160,
+    Assets161,
+    Assets162,
+    Assets163,
+    Assets164,
+    Assets165,
+    Assets166,
+    Assets167,
+    Assets168,
+    Assets169,
+    Assets170,
+    Assets171,
+    Assets172,
+    Assets173,
+    Assets174,
+    Assets175,
+    Assets176,
+    Assets177,
+    Assets178,
+    Assets179,
+    Assets180,
+    Assets181,
+    Assets182,
+    Assets183,
+    Assets184,
+    Assets185,
+    Bleed3,
+    Bleed4,
+    Bleed5,
+    Bleed6,
+    Bleed7,
+    Dimensions9,
+    Format5,
+    Format7,
+    PricingOption141,
+    PricingOption142,
+    PricingOption143,
+    PricingOption144,
+    PricingOption145,
+    PricingOption146,
+    PricingOption147,
+    PricingOption148,
+    PricingOption149,
+    Renders9,
+    Requirements1,
+    Requirements10,
+    Requirements11,
+    Requirements12,
+    Requirements13,
+    Requirements14,
+    Requirements15,
+    Requirements16,
+    Requirements17,
+    Requirements18,
+    Requirements19,
+    Requirements2,
+    Requirements20,
+    Requirements21,
+    Requirements22,
+    Requirements23,
+    Requirements24,
+    Requirements3,
+    Requirements4,
+    Requirements5,
+    Requirements6,
+    Requirements7,
+    Requirements8,
+    Requirements9,
+)
+from adcp.types.generated_poc.bundled.media_buy.log_event_request import (
+    CustomData,
+    Uid2,
+    Uid3,
+    Uid4,
+    Uid5,
+    UserMatch2,
+    UserMatch3,
+    UserMatch4,
+    UserMatch5,
+)
+from adcp.types.generated_poc.bundled.media_buy.log_event_response import (
+    LogEventResponse3,
+    LogEventResponse4,
+)
+from adcp.types.generated_poc.bundled.media_buy.package_request import (
+    Assets230,
+    Assets231,
+    Assets232,
+    Assets233,
+    Assets234,
+    Assets235,
+    Assets236,
+    Assets237,
+    Assets238,
+    Assets239,
+    Assets240,
+    Assets241,
+    Assets242,
+    Assets243,
+    Assets244,
+    DeclaredBy138,
+    DeclaredBy139,
+    DeclaredBy140,
+    DeclaredBy141,
+    DeclaredBy142,
+    DeclaredBy143,
+    DeclaredBy144,
+    DeclaredBy145,
+    DeclaredBy146,
+    DeclaredBy147,
+    DeclaredBy148,
+    DeclaredBy149,
+    DeclaredBy150,
+    Disclosure139,
+    Disclosure140,
+    Disclosure141,
+    Disclosure142,
+    Disclosure143,
+    Disclosure144,
+    Disclosure145,
+    Disclosure146,
+    Disclosure147,
+    Disclosure148,
+    Disclosure149,
+    Disclosure150,
+    Disclosure151,
+    FeedFieldMapping11,
+    FrequencyCap10,
+    FrequencyCap11,
+    GeoProximity12,
+    GeoProximity13,
+    Geometry11,
+    Geometry12,
+    Jurisdiction146,
+    Jurisdiction147,
+    Jurisdiction148,
+    Jurisdiction149,
+    Jurisdiction150,
+    Jurisdiction151,
+    Jurisdiction152,
+    Jurisdiction153,
+    Jurisdiction154,
+    Jurisdiction155,
+    Jurisdiction156,
+    Jurisdiction157,
+    Jurisdiction158,
+    Jurisdiction159,
+    Method24,
+    Metric8,
+    OptimizationGoals5,
+    Provenance139,
+    Provenance140,
+    Provenance141,
+    Provenance142,
+    Provenance143,
+    Provenance144,
+    Provenance145,
+    Provenance146,
+    Provenance147,
+    Provenance148,
+    Provenance149,
+    Provenance150,
+    Provenance151,
+    Radius11,
+    Radius12,
+    RenderGuidance138,
+    RenderGuidance139,
+    RenderGuidance140,
+    RenderGuidance141,
+    RenderGuidance142,
+    RenderGuidance143,
+    RenderGuidance144,
+    RenderGuidance145,
+    RenderGuidance146,
+    RenderGuidance147,
+    RenderGuidance148,
+    RenderGuidance149,
+    RenderGuidance150,
+    Role180,
+    Suppress10,
+    Suppress11,
+    System15,
+    Target16,
+    Target17,
+    Target18,
+    Target19,
+    TargetFrequency7,
+    TrackingEvent30,
+    TravelTime11,
+    TravelTime12,
+    Type59,
+    Type63,
+    Unit77,
+    Unit78,
+    VerificationItem138,
+    VerificationItem139,
+    VerificationItem140,
+    VerificationItem141,
+    VerificationItem142,
+    VerificationItem143,
+    VerificationItem144,
+    VerificationItem145,
+    VerificationItem146,
+    VerificationItem147,
+    VerificationItem148,
+    VerificationItem149,
+    VerificationItem150,
+    Window15,
+    Window16,
+    Window17,
+    Window18,
+)
+from adcp.types.generated_poc.bundled.media_buy.provide_performance_feedback_response import (
+    ProvidePerformanceFeedbackResponse3,
+    ProvidePerformanceFeedbackResponse4,
+)
+from adcp.types.generated_poc.bundled.media_buy.sync_audiences_request import (
+    Account33,
+    Add,
+    Add1,
+    Add2,
+    Remove,
+    Remove1,
+    Remove2,
+    Uid10,
+    Uid11,
+    Uid7,
+    Uid8,
+    Uid9,
+)
+from adcp.types.generated_poc.bundled.media_buy.sync_audiences_response import (
+    Error30,
+    IdType,
+    SyncAudiencesResponse3,
+    SyncAudiencesResponse4,
+)
+from adcp.types.generated_poc.bundled.media_buy.sync_catalogs_request import Account35
+from adcp.types.generated_poc.bundled.media_buy.sync_catalogs_response import (
+    Error32,
+    SyncCatalogsResponse3,
+    SyncCatalogsResponse4,
+)
+from adcp.types.generated_poc.bundled.media_buy.sync_event_sources_request import Account40
+from adcp.types.generated_poc.bundled.media_buy.sync_event_sources_response import (
+    Error36,
+    Health,
+    SyncEventSourcesResponse3,
+    SyncEventSourcesResponse4,
+)
+from adcp.types.generated_poc.bundled.media_buy.update_media_buy_request import (
+    Account44,
+    AgeRestriction7,
+    Assets318,
+    Assets319,
+    Assets320,
+    Assets321,
+    Assets322,
+    Assets323,
+    Assets324,
+    Assets325,
+    Assets326,
+    Assets327,
+    Assets328,
+    Assets329,
+    Assets330,
+    Assets331,
+    Assets332,
+    Assets333,
+    Assets334,
+    Assets335,
+    Assets336,
+    Assets337,
+    Assets338,
+    Assets339,
+    Assets340,
+    Assets341,
+    Assets342,
+    Assets343,
+    Assets344,
+    Assets345,
+    Assets346,
+    Assets347,
+    Assets348,
+    AttributionWindow11,
+    Authentication10,
+    Catalog9,
+    Compliance14,
+    Creative12,
+    DaypartTarget5,
+    DeclaredBy219,
+    DeclaredBy220,
+    DeclaredBy221,
+    DeclaredBy222,
+    DeclaredBy223,
+    DeclaredBy224,
+    DeclaredBy225,
+    DeclaredBy226,
+    DeclaredBy227,
+    DeclaredBy228,
+    DeclaredBy229,
+    DeclaredBy230,
+    DeclaredBy231,
+    DeclaredBy232,
+    DeclaredBy233,
+    DeclaredBy234,
+    DeclaredBy235,
+    DeclaredBy236,
+    DeclaredBy237,
+    DeclaredBy238,
+    DeclaredBy239,
+    DeclaredBy240,
+    DeclaredBy241,
+    DeclaredBy242,
+    DeclaredBy243,
+    DeclaredBy244,
+    DeclaredBy245,
+    Disclosure220,
+    Disclosure221,
+    Disclosure222,
+    Disclosure223,
+    Disclosure224,
+    Disclosure225,
+    Disclosure226,
+    Disclosure227,
+    Disclosure228,
+    Disclosure229,
+    Disclosure230,
+    Disclosure231,
+    Disclosure232,
+    Disclosure233,
+    Disclosure234,
+    Disclosure235,
+    Disclosure236,
+    Disclosure237,
+    Disclosure238,
+    Disclosure239,
+    Disclosure240,
+    Disclosure241,
+    Disclosure242,
+    Disclosure243,
+    Disclosure244,
+    Disclosure245,
+    Disclosure246,
+    EventSource9,
+    FeedFieldMapping18,
+    FeedFieldMapping19,
+    FeedFieldMapping20,
+    FrequencyCap13,
+    FrequencyCap14,
+    FrequencyCap15,
+    FrequencyCap16,
+    FrequencyCap17,
+    GeoMetro5,
+    GeoMetrosExcludeItem5,
+    GeoPostalArea5,
+    GeoPostalAreasExcludeItem5,
+    GeoProximity21,
+    GeoProximity22,
+    GeoProximity23,
+    GeoProximity24,
+    GeoProximity25,
+    Geometry20,
+    Geometry21,
+    Geometry22,
+    Geometry23,
+    Geometry24,
+    IndustryIdentifier12,
+    Jurisdiction232,
+    Jurisdiction233,
+    Jurisdiction234,
+    Jurisdiction235,
+    Jurisdiction236,
+    Jurisdiction237,
+    Jurisdiction238,
+    Jurisdiction239,
+    Jurisdiction240,
+    Jurisdiction241,
+    Jurisdiction242,
+    Jurisdiction243,
+    Jurisdiction244,
+    Jurisdiction245,
+    Jurisdiction246,
+    Jurisdiction247,
+    Jurisdiction248,
+    Jurisdiction249,
+    Jurisdiction250,
+    Jurisdiction251,
+    Jurisdiction252,
+    Jurisdiction253,
+    Jurisdiction254,
+    Jurisdiction255,
+    Jurisdiction256,
+    Jurisdiction257,
+    Jurisdiction258,
+    Jurisdiction259,
+    Jurisdiction260,
+    KeywordTarget5,
+    Method34,
+    Metric11,
+    NegativeKeyword5,
+    NewPackage,
+    OptimizationGoals7,
+    OptimizationGoals8,
+    OptimizationGoals9,
+    PostClick6,
+    PostView6,
+    Provenance219,
+    Provenance220,
+    Provenance221,
+    Provenance222,
+    Provenance223,
+    Provenance224,
+    Provenance225,
+    Provenance226,
+    Provenance227,
+    Provenance228,
+    Provenance229,
+    Provenance230,
+    Provenance231,
+    Provenance232,
+    Provenance233,
+    Provenance234,
+    Provenance235,
+    Provenance236,
+    Provenance237,
+    Provenance238,
+    Provenance239,
+    Provenance240,
+    Provenance241,
+    Provenance242,
+    Provenance243,
+    Provenance244,
+    Provenance245,
+    Radius20,
+    Radius21,
+    Radius22,
+    Radius23,
+    Radius24,
+    ReferenceAsset13,
+    RenderGuidance219,
+    RenderGuidance220,
+    RenderGuidance221,
+    RenderGuidance222,
+    RenderGuidance223,
+    RenderGuidance224,
+    RenderGuidance225,
+    RenderGuidance226,
+    RenderGuidance227,
+    RenderGuidance228,
+    RenderGuidance229,
+    RenderGuidance230,
+    RenderGuidance231,
+    RenderGuidance232,
+    RenderGuidance233,
+    RenderGuidance234,
+    RenderGuidance235,
+    RenderGuidance236,
+    RenderGuidance237,
+    RenderGuidance238,
+    RenderGuidance239,
+    RenderGuidance240,
+    RenderGuidance241,
+    RenderGuidance242,
+    RenderGuidance243,
+    RenderGuidance244,
+    RenderGuidance245,
+    RequiredDisclosure14,
+    Role270,
+    Role272,
+    Security13,
+    Suppress13,
+    Suppress14,
+    Suppress15,
+    Suppress16,
+    Suppress17,
+    System19,
+    Target21,
+    Target22,
+    Target23,
+    Target24,
+    Target25,
+    Target26,
+    Target27,
+    Target28,
+    Target29,
+    TargetFrequency10,
+    TargetFrequency11,
+    TargetFrequency9,
+    TargetingOverlay4,
+    TrackingEvent50,
+    TravelTime20,
+    TravelTime21,
+    TravelTime22,
+    TravelTime23,
+    TravelTime24,
+    Type95,
+    Type99,
+    Unit100,
+    Unit101,
+    VerificationItem219,
+    VerificationItem220,
+    VerificationItem221,
+    VerificationItem222,
+    VerificationItem223,
+    VerificationItem224,
+    VerificationItem225,
+    VerificationItem226,
+    VerificationItem227,
+    VerificationItem228,
+    VerificationItem229,
+    VerificationItem230,
+    VerificationItem231,
+    VerificationItem232,
+    VerificationItem233,
+    VerificationItem234,
+    VerificationItem235,
+    VerificationItem236,
+    VerificationItem237,
+    VerificationItem238,
+    VerificationItem239,
+    VerificationItem240,
+    VerificationItem241,
+    VerificationItem242,
+    VerificationItem243,
+    VerificationItem244,
+    VerificationItem245,
+    Window20,
+    Window21,
+    Window22,
+    Window23,
+    Window24,
+    Window25,
+    Window26,
+    Window27,
+    Window28,
+)
+from adcp.types.generated_poc.bundled.media_buy.update_media_buy_response import (
+    Adjustments23,
+    AffectedPackage,
+    FrequencyCap19,
+    FrequencyCap20,
+    GeoProximity27,
+    GeoProximity28,
+    Geometry26,
+    Geometry27,
+    Metric13,
+    OptimizationGoals11,
+    Radius26,
+    Radius27,
+    Suppress19,
+    Suppress20,
+    System27,
+    Target31,
+    Target32,
+    Target33,
+    Target34,
+    TargetFrequency13,
+    TravelTime26,
+    TravelTime27,
+    Type107,
+    Unit128,
+    Unit129,
+    UpdateMediaBuyResponse3,
+    UpdateMediaBuyResponse4,
+    Window30,
+    Window31,
+    Window32,
+    Window33,
+)
+from adcp.types.generated_poc.bundled.property.create_property_list_request import (
+    BaseProperties,
+    BaseProperties1,
+    BaseProperties2,
+    BaseProperties3,
+    ExcludeIdentifier,
+)
+from adcp.types.generated_poc.bundled.property.create_property_list_response import (
+    BaseProperties4,
+    BaseProperties6,
+    BaseProperties7,
+    PricingOption1,
+    PricingOption2,
+    PricingOption3,
+    PricingOption4,
+    PricingOption5,
+    PricingOption6,
+    PricingOption7,
+    PricingOption8,
+    PricingOption9,
+)
+from adcp.types.generated_poc.bundled.property.get_property_list_response import (
+    BaseProperties10,
+    BaseProperties11,
+    BaseProperties8,
+    Identifier5,
+    PricingOption111,
+    PricingOption112,
+    PricingOption113,
+    PricingOption114,
+    PricingOption115,
+    PricingOption116,
+    PricingOption117,
+    PricingOption118,
+    PricingOption119,
+)
+from adcp.types.generated_poc.bundled.property.list_property_lists_response import (
+    BaseProperties12,
+    BaseProperties14,
+    BaseProperties15,
+    PricingOption171,
+    PricingOption172,
+    PricingOption173,
+    PricingOption174,
+    PricingOption175,
+    PricingOption176,
+    PricingOption177,
+    PricingOption178,
+    PricingOption179,
+)
+from adcp.types.generated_poc.bundled.property.update_property_list_request import (
+    BaseProperties16,
+    BaseProperties18,
+    BaseProperties19,
+)
+from adcp.types.generated_poc.bundled.property.update_property_list_response import (
+    BaseProperties20,
+    BaseProperties22,
+    BaseProperties23,
+    PricingOption181,
+    PricingOption182,
+    PricingOption183,
+    PricingOption184,
+    PricingOption185,
+    PricingOption186,
+    PricingOption187,
+    PricingOption188,
+    PricingOption189,
+)
+from adcp.types.generated_poc.bundled.property.validate_property_delivery_response import (
+    Authorization,
+    Status48,
+    Status49,
+)
+from adcp.types.generated_poc.bundled.protocol.get_adcp_capabilities_response import (
+    AvailableUs,
+    Capabilities,
+    Features2,
+    OfflineDeliveryProtocol,
+    PostClickItem,
+    PostViewItem,
+    Specialism,
+    SupportedActionSource,
+    SupportedChannel,
+    SupportedEventType,
+    SupportedPricingModel,
+    SupportedUidType,
+    Type31,
+    VerificationMethod,
+)
+from adcp.types.generated_poc.bundled.signals.activate_signal_request import (
+    Account2,
+    Destinations,
+    Destinations1,
+)
+from adcp.types.generated_poc.bundled.signals.activate_signal_response import (
+    ActivateSignalResponse3,
+    ActivateSignalResponse4,
+    ActivationKey1,
+    ActivationKey2,
+    ActivationKey3,
+    Deployments,
+    Deployments1,
+)
+from adcp.types.generated_poc.bundled.signals.get_signals_request import (
+    Account24,
+    Destinations3,
+    SignalIds,
+    SignalIds1,
+    SignalIds2,
+)
+from adcp.types.generated_poc.bundled.signals.get_signals_response import (
+    ActivationKey7,
+    ActivationKey8,
+    ActivationKey9,
+    Deployments3,
+    PricingOption121,
+    PricingOption122,
+    PricingOption123,
+    PricingOption124,
+    PricingOption125,
+    PricingOption126,
+    PricingOption127,
+    PricingOption128,
+    PricingOption129,
+    SignalId16,
+    SignalType,
+    ValueType,
+)
+from adcp.types.generated_poc.bundled.sponsored_intelligence.si_initiate_session_request import (
+    SupportedCapabilities,
+)
+from adcp.types.generated_poc.bundled.sponsored_intelligence.si_initiate_session_response import (
+    NegotiatedCapabilities,
+    SessionStatus,
+    UiElement,
+)
+from adcp.types.generated_poc.bundled.sponsored_intelligence.si_send_message_response import Type78
 
 # Special imports for name collisions (qualified names for types defined in multiple modules)
+from adcp.types.generated_poc.bundled.media_buy.create_media_buy_response import (
+    Package as _PackageFromBundledCreateMediaBuyResponse,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_media_buys_response import (
+    Package as _PackageFromBundledGetMediaBuysResponse,
+)
 from adcp.types.generated_poc.core.package import Package as _PackageFromPackage
 from adcp.types.generated_poc.media_buy.get_media_buys_response import (
     Package as _PackageFromGetMediaBuysResponse,
 )
+from adcp.types.generated_poc.bundled.media_buy.get_media_buy_delivery_response import (
+    DeliveryStatus as _DeliveryStatusFromBundledGetMediaBuyDeliveryResponse,
+)
+from adcp.types.generated_poc.bundled.media_buy.get_media_buys_response import (
+    DeliveryStatus as _DeliveryStatusFromBundledGetMediaBuysResponse,
+)
 from adcp.types.generated_poc.media_buy.get_media_buy_delivery_response import (
     DeliveryStatus as _DeliveryStatusFromGetMediaBuyDeliveryResponse,
 )
 from adcp.types.generated_poc.media_buy.get_media_buys_response import (
     DeliveryStatus as _DeliveryStatusFromGetMediaBuysResponse,
 )
+from adcp.types.generated_poc.bundled.media_buy.get_media_buy_delivery_request import (
+    Audience as _AudienceFromBundledGetMediaBuyDeliveryRequest,
+)
+from adcp.types.generated_poc.bundled.media_buy.sync_audiences_request import (
+    Audience as _AudienceFromBundledSyncAudiencesRequest,
+)
+from adcp.types.generated_poc.bundled.media_buy.sync_audiences_response import (
+    Audience as _AudienceFromBundledSyncAudiencesResponse,
+)
 from adcp.types.generated_poc.media_buy.get_media_buy_delivery_request import (
     Audience as _AudienceFromGetMediaBuyDeliveryRequest,
 )
@@ -1326,19 +4236,48 @@
 
 # Explicit exports
 __all__ = [
+    "A2UiBoundValue",
+    "A2UiBoundValue1",
+    "A2UiBoundValue2",
+    "A2UiBoundValue3",
+    "A2UiBoundValue4",
+    "A2UiBoundValue5",
     "A2UiComponent",
     "A2UiSurface",
+    "A2UiUserAction",
     "A2ui",
     "Accent",
     "Accent1",
     "Accent1Item",
+    "AcceptedMethod",
+    "AcceptsParameter",
     "Accessibility",
     "Account",
+    "Account11",
+    "Account13",
+    "Account15",
+    "Account17",
+    "Account19",
+    "Account2",
+    "Account22",
+    "Account24",
+    "Account26",
+    "Account28",
+    "Account33",
+    "Account35",
+    "Account37",
+    "Account4",
+    "Account40",
+    "Account44",
+    "Account6",
     "AccountReference",
     "AccountReference1",
     "AccountReference2",
     "AccountScope",
+    "AccountSetupRequiredDetails",
     "AccountStatus",
+    "Accounts",
+    "Accounts1",
     "AcpHandoff",
     "AcquireRightsRequest",
     "AcquireRightsResponse",
@@ -1347,36 +4286,81 @@
     "AcquireRightsResponse3",
     "AcquireRightsResponse4",
     "Action",
-    "Action2",
+    "Action3",
+    "Action5",
+    "Action7",
     "ActionResponse",
     "ActionSource",
     "ActivateSignalRequest",
     "ActivateSignalResponse",
     "ActivateSignalResponse1",
     "ActivateSignalResponse2",
+    "ActivateSignalResponse3",
+    "ActivateSignalResponse4",
     "ActivationKey",
     "ActivationKey1",
     "ActivationKey2",
+    "ActivationKey3",
+    "ActivationKey4",
+    "ActivationKey5",
+    "ActivationKey7",
+    "ActivationKey8",
+    "ActivationKey9",
+    "AdInventory",
     "AdInventoryConfiguration",
     "Adcp",
     "AdcpAgentsAuthorization",
     "AdcpAgentsAuthorization1",
     "AdcpAgentsAuthorization2",
     "AdcpAsyncResponseData",
-    "AdcpDomain",
     "AdcpExtensionFileSchema",
+    "AdcpProtocol",
+    "AdcpSpecialism",
+    "Add",
+    "Add1",
+    "Add2",
     "Address",
     "Adjustments",
     "Adjustments1",
+    "Adjustments10",
+    "Adjustments11",
+    "Adjustments12",
+    "Adjustments13",
+    "Adjustments14",
+    "Adjustments15",
+    "Adjustments16",
+    "Adjustments17",
+    "Adjustments18",
+    "Adjustments19",
+    "Adjustments21",
+    "Adjustments23",
+    "Adjustments3",
+    "Adjustments4",
+    "Adjustments5",
+    "Adjustments6",
+    "Adjustments7",
+    "Adjustments8",
+    "Adjustments9",
     "AdvertiserIndustry",
+    "AffectedPackage",
     "AgeRestriction",
+    "AgeRestriction7",
     "AgeVerificationMethod",
+    "AgentEncryptionKey",
     "AgentSigningKey",
+    "Aggregate",
     "AggregatedTotals",
     "AiTool",
+    "Align",
+    "Allocation",
+    "Allocations",
+    "AppHandoff",
+    "AppItem",
     "ApprovalStatus",
+    "Apps",
     "Area",
     "Artifact",
+    "Artifact6",
     "ArtifactRef",
     "ArtifactWebhook",
     "ArtifactWebhookPayload",
@@ -1389,42 +4373,368 @@
     "AssetContentType",
     "AssetPoolBinding",
     "AssetRequirements",
+    "AssetRequirements10",
+    "AssetRequirements11",
+    "AssetRequirements12",
+    "AssetRequirements14",
+    "AssetRequirements15",
+    "AssetRequirements16",
+    "AssetRequirements17",
+    "AssetRequirements18",
+    "AssetRequirements19",
+    "AssetRequirements2",
+    "AssetRequirements20",
+    "AssetRequirements21",
+    "AssetRequirements22",
+    "AssetRequirements23",
+    "AssetRequirements24",
+    "AssetRequirements3",
+    "AssetRequirements4",
+    "AssetRequirements5",
+    "AssetRequirements6",
+    "AssetRequirements7",
+    "AssetRequirements8",
+    "AssetRequirements9",
     "AssetType",
     "Assets",
     "Assets1",
     "Assets10",
+    "Assets100",
+    "Assets101",
+    "Assets102",
+    "Assets103",
+    "Assets104",
+    "Assets105",
+    "Assets106",
+    "Assets108",
+    "Assets109",
     "Assets11",
+    "Assets110",
+    "Assets111",
+    "Assets112",
+    "Assets113",
+    "Assets114",
+    "Assets116",
+    "Assets117",
+    "Assets118",
+    "Assets119",
     "Assets12",
+    "Assets120",
+    "Assets121",
+    "Assets122",
+    "Assets123",
+    "Assets124",
+    "Assets125",
+    "Assets126",
+    "Assets127",
+    "Assets128",
+    "Assets129",
     "Assets13",
+    "Assets130",
+    "Assets132",
+    "Assets133",
+    "Assets134",
+    "Assets135",
+    "Assets136",
+    "Assets137",
+    "Assets138",
+    "Assets139",
     "Assets14",
+    "Assets140",
+    "Assets141",
+    "Assets142",
+    "Assets143",
+    "Assets144",
+    "Assets145",
+    "Assets146",
+    "Assets148",
+    "Assets149",
     "Assets15",
+    "Assets150",
+    "Assets152",
+    "Assets153",
+    "Assets154",
+    "Assets155",
+    "Assets156",
+    "Assets157",
+    "Assets158",
     "Assets16",
+    "Assets160",
+    "Assets161",
+    "Assets162",
+    "Assets163",
+    "Assets164",
+    "Assets165",
+    "Assets166",
+    "Assets167",
+    "Assets168",
+    "Assets169",
     "Assets17",
+    "Assets170",
+    "Assets171",
+    "Assets172",
+    "Assets173",
+    "Assets174",
+    "Assets175",
+    "Assets176",
+    "Assets177",
+    "Assets178",
+    "Assets179",
     "Assets18",
+    "Assets180",
+    "Assets181",
+    "Assets182",
+    "Assets183",
+    "Assets184",
+    "Assets185",
+    "Assets187",
+    "Assets188",
+    "Assets189",
     "Assets19",
+    "Assets190",
+    "Assets191",
+    "Assets192",
+    "Assets193",
+    "Assets194",
+    "Assets195",
+    "Assets196",
+    "Assets197",
+    "Assets198",
+    "Assets199",
     "Assets2",
-    "Assets20",
+    "Assets200",
+    "Assets201",
+    "Assets202",
+    "Assets203",
+    "Assets204",
+    "Assets205",
+    "Assets206",
+    "Assets207",
+    "Assets208",
+    "Assets209",
     "Assets21",
+    "Assets210",
+    "Assets211",
+    "Assets212",
+    "Assets214",
+    "Assets215",
+    "Assets216",
+    "Assets217",
+    "Assets218",
+    "Assets219",
     "Assets22",
+    "Assets220",
+    "Assets221",
+    "Assets222",
+    "Assets223",
+    "Assets224",
+    "Assets225",
+    "Assets226",
+    "Assets227",
+    "Assets228",
     "Assets23",
+    "Assets230",
+    "Assets231",
+    "Assets232",
+    "Assets233",
+    "Assets234",
+    "Assets235",
+    "Assets236",
+    "Assets237",
+    "Assets238",
+    "Assets239",
     "Assets24",
+    "Assets240",
+    "Assets241",
+    "Assets242",
+    "Assets243",
+    "Assets244",
+    "Assets246",
+    "Assets247",
+    "Assets248",
+    "Assets249",
     "Assets25",
+    "Assets250",
+    "Assets251",
+    "Assets252",
+    "Assets253",
+    "Assets254",
+    "Assets255",
+    "Assets256",
+    "Assets257",
+    "Assets258",
+    "Assets259",
     "Assets26",
+    "Assets260",
+    "Assets261",
+    "Assets262",
+    "Assets263",
+    "Assets264",
+    "Assets265",
+    "Assets266",
+    "Assets267",
+    "Assets268",
+    "Assets269",
     "Assets27",
+    "Assets270",
+    "Assets271",
+    "Assets272",
+    "Assets273",
+    "Assets274",
+    "Assets275",
+    "Assets276",
+    "Assets278",
+    "Assets279",
     "Assets28",
+    "Assets280",
+    "Assets281",
+    "Assets282",
+    "Assets283",
+    "Assets284",
+    "Assets285",
+    "Assets286",
+    "Assets287",
+    "Assets288",
+    "Assets289",
     "Assets29",
+    "Assets290",
+    "Assets291",
+    "Assets292",
+    "Assets294",
+    "Assets295",
+    "Assets296",
+    "Assets297",
+    "Assets298",
+    "Assets299",
     "Assets3",
     "Assets30",
+    "Assets300",
+    "Assets301",
+    "Assets302",
+    "Assets303",
+    "Assets304",
+    "Assets305",
+    "Assets306",
+    "Assets307",
+    "Assets308",
+    "Assets31",
+    "Assets310",
+    "Assets311",
+    "Assets312",
+    "Assets313",
+    "Assets314",
+    "Assets315",
+    "Assets316",
+    "Assets318",
+    "Assets319",
+    "Assets32",
+    "Assets320",
+    "Assets321",
+    "Assets322",
+    "Assets323",
+    "Assets324",
+    "Assets325",
+    "Assets326",
+    "Assets327",
+    "Assets328",
+    "Assets329",
+    "Assets33",
+    "Assets330",
+    "Assets331",
+    "Assets332",
+    "Assets333",
+    "Assets334",
+    "Assets335",
+    "Assets336",
+    "Assets337",
+    "Assets338",
+    "Assets339",
+    "Assets34",
+    "Assets340",
+    "Assets341",
+    "Assets342",
+    "Assets343",
+    "Assets344",
+    "Assets345",
+    "Assets346",
+    "Assets347",
+    "Assets348",
+    "Assets35",
+    "Assets350",
+    "Assets351",
+    "Assets352",
+    "Assets36",
+    "Assets37",
+    "Assets38",
+    "Assets39",
+    "Assets40",
+    "Assets41",
+    "Assets42",
+    "Assets43",
+    "Assets44",
+    "Assets45",
+    "Assets46",
+    "Assets47",
+    "Assets48",
+    "Assets49",
     "Assets5",
+    "Assets50",
+    "Assets51",
+    "Assets53",
+    "Assets54",
+    "Assets55",
+    "Assets57",
+    "Assets58",
+    "Assets59",
     "Assets6",
+    "Assets60",
+    "Assets61",
+    "Assets62",
+    "Assets63",
+    "Assets65",
+    "Assets66",
+    "Assets67",
+    "Assets68",
+    "Assets69",
     "Assets7",
+    "Assets70",
+    "Assets71",
+    "Assets72",
+    "Assets73",
+    "Assets74",
+    "Assets75",
+    "Assets76",
+    "Assets77",
+    "Assets78",
+    "Assets79",
     "Assets8",
+    "Assets81",
+    "Assets82",
+    "Assets83",
+    "Assets84",
+    "Assets85",
+    "Assets86",
+    "Assets87",
+    "Assets88",
+    "Assets89",
     "Assets9",
+    "Assets90",
+    "Assets91",
+    "Assets92",
+    "Assets93",
+    "Assets94",
+    "Assets95",
+    "Assets96",
+    "Assets97",
+    "Assets98",
+    "Assets99",
     "AssignedPackage",
     "Assignment",
     "Assignments",
+    "AttributeDefinition",
     "AttributionModel",
     "AttributionWindow",
+    "AttributionWindow11",
     "AudienceConstraints",
     "AudienceDistribution",
     "AudienceMember",
@@ -1433,30 +4743,51 @@
     "AudienceSelector2",
     "AudienceSelector3",
     "AudienceSelector4",
+    "AudienceSize",
+    "AudienceSize1",
+    "AudienceSize2",
+    "AudienceSize3",
+    "AudienceSize4",
+    "AudienceSize5",
     "AudienceSource",
     "AudienceTargeting",
+    "AudienceTargeting1",
+    "AudienceTargeting2",
+    "AudienceTargeting3",
+    "AudienceTooSmallDetails",
     "AudienceType",
     "AudioAsset",
     "AudioAssetRequirements",
     "AudioBitDepth",
+    "AudioChannel",
     "AudioChannels",
+    "AudioCodec",
+    "AudioSampleRate",
     "Authentication",
+    "Authentication10",
+    "Authentication2",
+    "Authentication3",
     "AuthenticationScheme",
+    "Authorization",
+    "AuthorizationResult",
+    "AuthorizationSummary",
     "AuthorizedAgents",
     "AuthorizedAgents1",
     "AuthorizedAgents2",
     "AuthorizedAgents3",
     "AuthorizedAgents4",
     "AuthorizedAgents5",
-    "AvailableDimension",
     "AvailableField",
     "AvailableMetric",
     "AvailablePackage",
+    "AvailableRemedy",
+    "AvailableReportingFrequency",
+    "AvailableUs",
     "Avatar",
     "Background",
     "Background2",
-    "Background2Item",
     "Background3",
+    "Background3Item",
     "Balance",
     "Bank",
     "BaseCollectionSource",
@@ -1465,6 +4796,25 @@
     "BaseCollectionSource3",
     "BaseGroupAsset",
     "BaseIndividualAsset",
+    "BaseProperties",
+    "BaseProperties1",
+    "BaseProperties10",
+    "BaseProperties11",
+    "BaseProperties12",
+    "BaseProperties14",
+    "BaseProperties15",
+    "BaseProperties16",
+    "BaseProperties18",
+    "BaseProperties19",
+    "BaseProperties2",
+    "BaseProperties20",
+    "BaseProperties22",
+    "BaseProperties23",
+    "BaseProperties3",
+    "BaseProperties4",
+    "BaseProperties6",
+    "BaseProperties7",
+    "BaseProperties8",
     "BasePropertySource",
     "BasePropertySource1",
     "BasePropertySource2",
@@ -1472,13 +4822,25 @@
     "Baseline",
     "BatchFrequency",
     "Billing",
+    "BillingEntity",
     "BillingMeasurement",
     "BitDepth",
     "Bleed",
     "Bleed1",
+    "Bleed10",
+    "Bleed11",
+    "Bleed12",
+    "Bleed13",
+    "Bleed3",
+    "Bleed4",
+    "Bleed5",
+    "Bleed6",
+    "Bleed7",
+    "Bleed9",
     "BodyStyle",
     "Bounds",
     "Brand",
+    "BrandAgentType",
     "BrandContext",
     "BrandId",
     "BrandReference",
@@ -1488,23 +4850,49 @@
     "BudgetLimit",
     "BudgetRange",
     "BudgetRange1",
+    "BudgetRange3",
+    "BudgetTooLowDetails",
     "BuildCreativeInputRequired",
     "BuildCreativeRequest",
     "BuildCreativeResponse",
     "BuildCreativeResponse1",
     "BuildCreativeResponse2",
     "BuildCreativeResponse3",
+    "BuildCreativeResponse4",
+    "BuildCreativeResponse5",
+    "BuildCreativeResponse6",
     "BuildCreativeSubmitted",
     "BuildCreativeWorking",
     "BusinessEntity",
+    "Button",
     "BuyingMode",
     "ByActionSourceItem",
+    "ByActionSourceItem10",
+    "ByActionSourceItem11",
+    "ByActionSourceItem12",
+    "ByActionSourceItem2",
+    "ByActionSourceItem4",
+    "ByActionSourceItem5",
+    "ByActionSourceItem6",
+    "ByActionSourceItem7",
+    "ByActionSourceItem8",
+    "ByActionSourceItem9",
     "ByAudienceItem",
     "ByCatalogItemItem",
     "ByCreativeItem",
     "ByDevicePlatformItem",
     "ByDeviceTypeItem",
     "ByEventTypeItem",
+    "ByEventTypeItem10",
+    "ByEventTypeItem11",
+    "ByEventTypeItem12",
+    "ByEventTypeItem2",
+    "ByEventTypeItem4",
+    "ByEventTypeItem5",
+    "ByEventTypeItem6",
+    "ByEventTypeItem7",
+    "ByEventTypeItem8",
+    "ByEventTypeItem9",
     "ByGeoItem",
     "ByKeywordItem",
     "ByPackageItem",
@@ -1514,14 +4902,21 @@
     "CalibrateContentResponse",
     "CalibrateContentResponse1",
     "CalibrateContentResponse2",
+    "CalibrateContentResponse3",
+    "CalibrateContentResponse4",
     "CalibrationExemplars",
     "Campaign",
     "CanceledBy",
     "Cancellation",
-    "Cancellation1",
+    "Cancellation2",
+    "Cancellation4",
     "CancellationFee",
     "CancellationPolicy",
+    "Capabilities",
+    "Capability",
+    "Card",
     "Catalog",
+    "Catalog9",
     "CatalogAction",
     "CatalogAsset",
     "CatalogFieldBinding",
@@ -1537,46 +4932,68 @@
     "Channel",
     "ChannelAllocation",
     "Channels",
+    "ChannelsAnyEnum",
     "CheckGovernanceRequest",
     "CheckGovernanceResponse",
     "CheckType",
     "ChromaSubsampling",
+    "Clicks",
+    "Clicks1",
+    "Clicks2",
+    "Clicks3",
+    "Clicks4",
+    "Clicks5",
+    "CloudStorageProtocol",
+    "CoBranding",
     "CoBrandingRequirement",
     "Code",
     "Codec",
+    "Codes",
     "Collection",
     "CollectionCadence",
     "CollectionDistribution",
     "CollectionInfo",
     "CollectionList",
     "CollectionListChangedWebhook",
+    "CollectionListExclude",
     "CollectionListFilters",
+    "CollectionListReference",
     "CollectionRelationship",
     "CollectionSelector",
     "CollectionStatus",
     "ColorSpace",
     "Colors",
+    "Column",
     "Commerce",
+    "CompletedViews",
+    "CompletedViews1",
+    "CompletedViews2",
+    "CompletedViews3",
+    "CompletedViews4",
+    "CompletedViews5",
     "Compliance",
+    "Compliance10",
+    "Compliance14",
+    "Compliance2",
+    "ComplianceTesting",
     "ComplyTestControllerRequest",
-    "ComplyTestControllerRequest1",
-    "ComplyTestControllerRequest2",
-    "ComplyTestControllerRequest3",
-    "ComplyTestControllerRequest4",
-    "ComplyTestControllerRequest5",
-    "ComplyTestControllerRequest6",
-    "ComplyTestControllerRequest7",
     "ComplyTestControllerResponse",
     "ComplyTestControllerResponse1",
     "ComplyTestControllerResponse2",
     "ComplyTestControllerResponse3",
     "ComplyTestControllerResponse4",
+    "Component",
     "Components",
+    "Compression",
     "Condition",
+    "ConflictDetails",
     "Consent",
     "ConsentBasis",
     "ConsentScopeEnum",
+    "Consumption",
     "Contact",
+    "Contact5",
+    "Contact7",
     "Container",
     "Content",
     "ContentFormat",
@@ -1584,17 +5001,19 @@
     "ContentRating",
     "ContentRatingSystem",
     "ContentStandards",
-    "ContentStandardsDetail",
     "ContextForCheckout",
     "ContextMatchRequest",
     "ContextMatchResponse",
     "ContextObject",
     "ContextSignals",
+    "ConversionEvent",
     "ConversionTracking",
     "CountriesAllItem",
     "Country",
     "Coverage",
     "CoverageGap",
+    "CoverageStatus",
+    "CoversContentDigest",
     "CpaPricingOption",
     "CpcPricingOption",
     "CpcvPricingOption",
@@ -1607,33 +5026,49 @@
     "CreateContentStandardsResponse",
     "CreateContentStandardsResponse1",
     "CreateContentStandardsResponse2",
+    "CreateContentStandardsResponse3",
+    "CreateContentStandardsResponse4",
     "CreateMediaBuyInputRequired",
     "CreateMediaBuyRequest",
     "CreateMediaBuyResponse",
     "CreateMediaBuyResponse1",
     "CreateMediaBuyResponse2",
+    "CreateMediaBuyResponse3",
+    "CreateMediaBuyResponse4",
     "CreateMediaBuySubmitted",
     "CreateMediaBuyWorking",
     "CreatePropertyListRequest",
     "CreatePropertyListResponse",
     "Creative",
+    "Creative12",
     "CreativeAction",
     "CreativeAgent",
     "CreativeAgentCapability",
     "CreativeApproval",
+    "CreativeApprovalRequest",
+    "CreativeApprovalResponse",
+    "CreativeApprovalResponse1",
+    "CreativeApprovalResponse2",
+    "CreativeApprovalResponse3",
+    "CreativeApprovalResponse4",
     "CreativeApprovalStatus",
     "CreativeAsset",
     "CreativeAssignment",
     "CreativeBrief",
+    "CreativeConsumption",
     "CreativeFeature",
     "CreativeFeatureResult",
     "CreativeFilters",
+    "CreativeIdentifierType",
     "CreativeItem",
     "CreativeItem1",
     "CreativeItem2",
     "CreativeManifest",
+    "CreativeManifest3",
+    "CreativeManifest6",
     "CreativePolicy",
     "CreativeQuality",
+    "CreativeRejectedDetails",
     "CreativeSortField",
     "CreativeSpecs",
     "CreativeStatus",
@@ -1643,6 +5078,7 @@
     "CreditLimit",
     "CssAsset",
     "CssAssetRequirements",
+    "CustomData",
     "DaastAsset",
     "DaastAsset1",
     "DaastAsset2",
@@ -1651,18 +5087,258 @@
     "DaastVersion",
     "DailyBreakdownItem",
     "DailyBreakdownItem1",
+    "DailyBreakdownItem3",
     "DataProviderDomain",
     "DataProviderSignalSelector",
     "DataProviderSignalSelector1",
     "DataProviderSignalSelector2",
     "DataProviderSignalSelector3",
+    "DataProviderSignals",
+    "DataProviderSignals1",
+    "DataProviderSignals2",
+    "DataProviderSignals3",
     "DateRange",
     "DateRangeSupport",
     "DatetimeRange",
+    "Day",
     "DayOfWeek",
     "DaypartTarget",
+    "DaypartTarget5",
     "DeadlinePolicy",
+    "Deadlines",
     "DeclaredBy",
+    "DeclaredBy1",
+    "DeclaredBy10",
+    "DeclaredBy100",
+    "DeclaredBy101",
+    "DeclaredBy102",
+    "DeclaredBy103",
+    "DeclaredBy104",
+    "DeclaredBy105",
+    "DeclaredBy106",
+    "DeclaredBy107",
+    "DeclaredBy108",
+    "DeclaredBy11",
+    "DeclaredBy110",
+    "DeclaredBy111",
+    "DeclaredBy112",
+    "DeclaredBy113",
+    "DeclaredBy115",
+    "DeclaredBy116",
+    "DeclaredBy117",
+    "DeclaredBy118",
+    "DeclaredBy119",
+    "DeclaredBy12",
+    "DeclaredBy120",
+    "DeclaredBy121",
+    "DeclaredBy122",
+    "DeclaredBy123",
+    "DeclaredBy125",
+    "DeclaredBy126",
+    "DeclaredBy127",
+    "DeclaredBy128",
+    "DeclaredBy129",
+    "DeclaredBy13",
+    "DeclaredBy130",
+    "DeclaredBy131",
+    "DeclaredBy132",
+    "DeclaredBy133",
+    "DeclaredBy134",
+    "DeclaredBy135",
+    "DeclaredBy136",
+    "DeclaredBy138",
+    "DeclaredBy139",
+    "DeclaredBy140",
+    "DeclaredBy141",
+    "DeclaredBy142",
+    "DeclaredBy143",
+    "DeclaredBy144",
+    "DeclaredBy145",
+    "DeclaredBy146",
+    "DeclaredBy147",
+    "DeclaredBy148",
+    "DeclaredBy149",
+    "DeclaredBy15",
+    "DeclaredBy150",
+    "DeclaredBy152",
+    "DeclaredBy153",
+    "DeclaredBy154",
+    "DeclaredBy155",
+    "DeclaredBy156",
+    "DeclaredBy157",
+    "DeclaredBy158",
+    "DeclaredBy159",
+    "DeclaredBy16",
+    "DeclaredBy160",
+    "DeclaredBy161",
+    "DeclaredBy162",
+    "DeclaredBy163",
+    "DeclaredBy164",
+    "DeclaredBy165",
+    "DeclaredBy166",
+    "DeclaredBy167",
+    "DeclaredBy168",
+    "DeclaredBy169",
+    "DeclaredBy17",
+    "DeclaredBy170",
+    "DeclaredBy171",
+    "DeclaredBy172",
+    "DeclaredBy173",
+    "DeclaredBy174",
+    "DeclaredBy175",
+    "DeclaredBy176",
+    "DeclaredBy177",
+    "DeclaredBy178",
+    "DeclaredBy18",
+    "DeclaredBy180",
+    "DeclaredBy181",
+    "DeclaredBy182",
+    "DeclaredBy183",
+    "DeclaredBy184",
+    "DeclaredBy185",
+    "DeclaredBy186",
+    "DeclaredBy187",
+    "DeclaredBy188",
+    "DeclaredBy189",
+    "DeclaredBy19",
+    "DeclaredBy190",
+    "DeclaredBy191",
+    "DeclaredBy192",
+    "DeclaredBy195",
+    "DeclaredBy196",
+    "DeclaredBy197",
+    "DeclaredBy198",
+    "DeclaredBy199",
+    "DeclaredBy2",
+    "DeclaredBy20",
+    "DeclaredBy200",
+    "DeclaredBy201",
+    "DeclaredBy202",
+    "DeclaredBy203",
+    "DeclaredBy204",
+    "DeclaredBy205",
+    "DeclaredBy206",
+    "DeclaredBy207",
+    "DeclaredBy209",
+    "DeclaredBy21",
+    "DeclaredBy210",
+    "DeclaredBy211",
+    "DeclaredBy212",
+    "DeclaredBy213",
+    "DeclaredBy214",
+    "DeclaredBy215",
+    "DeclaredBy216",
+    "DeclaredBy217",
+    "DeclaredBy219",
+    "DeclaredBy22",
+    "DeclaredBy220",
+    "DeclaredBy221",
+    "DeclaredBy222",
+    "DeclaredBy223",
+    "DeclaredBy224",
+    "DeclaredBy225",
+    "DeclaredBy226",
+    "DeclaredBy227",
+    "DeclaredBy228",
+    "DeclaredBy229",
+    "DeclaredBy23",
+    "DeclaredBy230",
+    "DeclaredBy231",
+    "DeclaredBy232",
+    "DeclaredBy233",
+    "DeclaredBy234",
+    "DeclaredBy235",
+    "DeclaredBy236",
+    "DeclaredBy237",
+    "DeclaredBy238",
+    "DeclaredBy239",
+    "DeclaredBy24",
+    "DeclaredBy240",
+    "DeclaredBy241",
+    "DeclaredBy242",
+    "DeclaredBy243",
+    "DeclaredBy244",
+    "DeclaredBy245",
+    "DeclaredBy247",
+    "DeclaredBy248",
+    "DeclaredBy249",
+    "DeclaredBy25",
+    "DeclaredBy250",
+    "DeclaredBy26",
+    "DeclaredBy27",
+    "DeclaredBy28",
+    "DeclaredBy29",
+    "DeclaredBy3",
+    "DeclaredBy30",
+    "DeclaredBy31",
+    "DeclaredBy32",
+    "DeclaredBy33",
+    "DeclaredBy34",
+    "DeclaredBy35",
+    "DeclaredBy36",
+    "DeclaredBy37",
+    "DeclaredBy38",
+    "DeclaredBy39",
+    "DeclaredBy4",
+    "DeclaredBy40",
+    "DeclaredBy41",
+    "DeclaredBy43",
+    "DeclaredBy44",
+    "DeclaredBy45",
+    "DeclaredBy46",
+    "DeclaredBy48",
+    "DeclaredBy49",
+    "DeclaredBy5",
+    "DeclaredBy50",
+    "DeclaredBy51",
+    "DeclaredBy52",
+    "DeclaredBy53",
+    "DeclaredBy54",
+    "DeclaredBy55",
+    "DeclaredBy56",
+    "DeclaredBy58",
+    "DeclaredBy59",
+    "DeclaredBy6",
+    "DeclaredBy60",
+    "DeclaredBy61",
+    "DeclaredBy62",
+    "DeclaredBy63",
+    "DeclaredBy64",
+    "DeclaredBy65",
+    "DeclaredBy66",
+    "DeclaredBy67",
+    "DeclaredBy68",
+    "DeclaredBy69",
+    "DeclaredBy7",
+    "DeclaredBy70",
+    "DeclaredBy72",
+    "DeclaredBy73",
+    "DeclaredBy74",
+    "DeclaredBy75",
+    "DeclaredBy76",
+    "DeclaredBy77",
+    "DeclaredBy78",
+    "DeclaredBy79",
+    "DeclaredBy8",
+    "DeclaredBy80",
+    "DeclaredBy82",
+    "DeclaredBy83",
+    "DeclaredBy84",
+    "DeclaredBy85",
+    "DeclaredBy86",
+    "DeclaredBy87",
+    "DeclaredBy88",
+    "DeclaredBy89",
+    "DeclaredBy9",
+    "DeclaredBy90",
+    "DeclaredBy91",
+    "DeclaredBy92",
+    "DeclaredBy93",
+    "DeclaredBy94",
+    "DeclaredBy96",
+    "DeclaredBy97",
+    "DeclaredBy98",
+    "DeclaredBy99",
     "DegreeType",
     "Delegation",
     "DelegationAuthority",
@@ -1676,12 +5352,16 @@
     "DeliveryMeasurement",
     "DeliveryMetrics",
     "DeliveryMode",
+    "DeliveryRecord",
     "DeliveryStatus",
     "DeliveryType",
     "DemographicSystem",
     "Deployment",
     "Deployment1",
     "Deployment2",
+    "Deployments",
+    "Deployments1",
+    "Deployments3",
     "DerivativeOf",
     "DerivativeType",
     "Destination",
@@ -1689,39 +5369,314 @@
     "Destination2",
     "DestinationItem",
     "DestinationType",
+    "Destinations",
+    "Destinations1",
+    "Destinations3",
     "Detail",
+    "Details",
     "DevicePlatform",
+    "DevicePlatformEnum",
     "DeviceType",
+    "DeviceTypeEnum",
     "DiagnosticIssue",
     "DigitalSourceType",
     "DimensionUnit",
     "Dimensions",
-    "Dimensions1",
+    "Dimensions11",
+    "Dimensions7",
+    "Dimensions9",
+    "Direction",
     "Disclosure",
+    "Disclosure10",
+    "Disclosure100",
+    "Disclosure101",
+    "Disclosure102",
+    "Disclosure103",
+    "Disclosure104",
+    "Disclosure105",
+    "Disclosure106",
+    "Disclosure107",
+    "Disclosure108",
+    "Disclosure109",
+    "Disclosure11",
+    "Disclosure111",
+    "Disclosure112",
+    "Disclosure113",
+    "Disclosure114",
+    "Disclosure116",
+    "Disclosure117",
+    "Disclosure118",
+    "Disclosure119",
+    "Disclosure12",
+    "Disclosure120",
+    "Disclosure121",
+    "Disclosure122",
+    "Disclosure123",
+    "Disclosure124",
+    "Disclosure126",
+    "Disclosure127",
+    "Disclosure128",
+    "Disclosure129",
+    "Disclosure13",
+    "Disclosure130",
+    "Disclosure131",
+    "Disclosure132",
+    "Disclosure133",
+    "Disclosure134",
+    "Disclosure135",
+    "Disclosure136",
+    "Disclosure137",
+    "Disclosure139",
+    "Disclosure14",
+    "Disclosure140",
+    "Disclosure141",
+    "Disclosure142",
+    "Disclosure143",
+    "Disclosure144",
+    "Disclosure145",
+    "Disclosure146",
+    "Disclosure147",
+    "Disclosure148",
+    "Disclosure149",
+    "Disclosure150",
+    "Disclosure151",
+    "Disclosure153",
+    "Disclosure154",
+    "Disclosure155",
+    "Disclosure156",
+    "Disclosure157",
+    "Disclosure158",
+    "Disclosure159",
+    "Disclosure16",
+    "Disclosure160",
+    "Disclosure161",
+    "Disclosure162",
+    "Disclosure163",
+    "Disclosure164",
+    "Disclosure165",
+    "Disclosure166",
+    "Disclosure167",
+    "Disclosure168",
+    "Disclosure169",
+    "Disclosure17",
+    "Disclosure170",
+    "Disclosure171",
+    "Disclosure172",
+    "Disclosure173",
+    "Disclosure174",
+    "Disclosure175",
+    "Disclosure176",
+    "Disclosure177",
+    "Disclosure178",
+    "Disclosure179",
+    "Disclosure18",
+    "Disclosure181",
+    "Disclosure182",
+    "Disclosure183",
+    "Disclosure184",
+    "Disclosure185",
+    "Disclosure186",
+    "Disclosure187",
+    "Disclosure188",
+    "Disclosure189",
+    "Disclosure19",
+    "Disclosure190",
+    "Disclosure191",
+    "Disclosure192",
+    "Disclosure193",
+    "Disclosure196",
+    "Disclosure197",
+    "Disclosure198",
+    "Disclosure199",
+    "Disclosure2",
+    "Disclosure20",
+    "Disclosure200",
+    "Disclosure201",
+    "Disclosure202",
+    "Disclosure203",
+    "Disclosure204",
+    "Disclosure205",
+    "Disclosure206",
+    "Disclosure207",
+    "Disclosure208",
+    "Disclosure21",
+    "Disclosure210",
+    "Disclosure211",
+    "Disclosure212",
+    "Disclosure213",
+    "Disclosure214",
+    "Disclosure215",
+    "Disclosure216",
+    "Disclosure217",
+    "Disclosure218",
+    "Disclosure22",
+    "Disclosure220",
+    "Disclosure221",
+    "Disclosure222",
+    "Disclosure223",
+    "Disclosure224",
+    "Disclosure225",
+    "Disclosure226",
+    "Disclosure227",
+    "Disclosure228",
+    "Disclosure229",
+    "Disclosure23",
+    "Disclosure230",
+    "Disclosure231",
+    "Disclosure232",
+    "Disclosure233",
+    "Disclosure234",
+    "Disclosure235",
+    "Disclosure236",
+    "Disclosure237",
+    "Disclosure238",
+    "Disclosure239",
+    "Disclosure24",
+    "Disclosure240",
+    "Disclosure241",
+    "Disclosure242",
+    "Disclosure243",
+    "Disclosure244",
+    "Disclosure245",
+    "Disclosure246",
+    "Disclosure248",
+    "Disclosure249",
+    "Disclosure25",
+    "Disclosure250",
+    "Disclosure251",
+    "Disclosure26",
+    "Disclosure27",
+    "Disclosure28",
+    "Disclosure29",
+    "Disclosure3",
+    "Disclosure30",
+    "Disclosure31",
+    "Disclosure32",
+    "Disclosure33",
+    "Disclosure34",
+    "Disclosure35",
+    "Disclosure36",
+    "Disclosure37",
+    "Disclosure38",
+    "Disclosure39",
+    "Disclosure4",
+    "Disclosure40",
+    "Disclosure41",
+    "Disclosure42",
+    "Disclosure44",
+    "Disclosure45",
+    "Disclosure46",
+    "Disclosure47",
+    "Disclosure49",
+    "Disclosure5",
+    "Disclosure50",
+    "Disclosure51",
+    "Disclosure52",
+    "Disclosure53",
+    "Disclosure54",
+    "Disclosure55",
+    "Disclosure56",
+    "Disclosure57",
+    "Disclosure59",
+    "Disclosure6",
+    "Disclosure60",
+    "Disclosure61",
+    "Disclosure62",
+    "Disclosure63",
+    "Disclosure64",
+    "Disclosure65",
+    "Disclosure66",
+    "Disclosure67",
+    "Disclosure68",
+    "Disclosure69",
+    "Disclosure7",
+    "Disclosure70",
+    "Disclosure71",
+    "Disclosure73",
+    "Disclosure74",
+    "Disclosure75",
+    "Disclosure76",
+    "Disclosure77",
+    "Disclosure78",
+    "Disclosure79",
+    "Disclosure8",
+    "Disclosure80",
+    "Disclosure81",
+    "Disclosure83",
+    "Disclosure84",
+    "Disclosure85",
+    "Disclosure86",
+    "Disclosure87",
+    "Disclosure88",
+    "Disclosure89",
+    "Disclosure9",
+    "Disclosure90",
+    "Disclosure91",
+    "Disclosure92",
+    "Disclosure93",
+    "Disclosure94",
+    "Disclosure95",
+    "Disclosure97",
+    "Disclosure98",
+    "Disclosure99",
     "DisclosureCapability",
     "DisclosurePersistence",
+    "DisclosurePersistenceEnum",
     "DisclosurePosition",
     "DistanceUnit",
     "DistributionId",
     "DistributionIdentifierType",
+    "Domain",
+    "DomainBreakdown",
     "DoohMetrics",
+    "DoohMetrics10",
+    "DoohMetrics11",
+    "DoohMetrics12",
+    "DoohMetrics2",
+    "DoohMetrics4",
+    "DoohMetrics5",
+    "DoohMetrics6",
+    "DoohMetrics7",
+    "DoohMetrics8",
+    "DoohMetrics9",
+    "Downloads",
+    "Downloads1",
+    "Downloads2",
+    "Downloads3",
+    "Downloads4",
+    "Downloads5",
     "DriftMetrics",
     "Duration",
     "EducationItem",
     "Embedding",
     "EmploymentType",
     "Endpoint",
+    "Enforcement",
+    "Engagements",
+    "Engagements1",
+    "Engagements2",
+    "Engagements3",
+    "Engagements4",
+    "Engagements5",
     "Entry",
+    "Error22",
+    "Error30",
+    "Error32",
+    "Error34",
+    "Error36",
     "ErrorCode",
     "Escalation",
     "EscalationRateTrend",
     "EscalationSeverity",
+    "EstimatedWait",
     "Event",
     "EventCustomData",
     "EventSource",
+    "EventSource9",
     "EventSourceHealth",
     "EventType",
     "ExcludeDistributionId",
+    "ExcludeIdentifier",
     "ExcludedCountry",
     "ExcludedItem",
     "Exclusivity",
@@ -1733,32 +5688,88 @@
     "ExtensionObject",
     "ExtensionsSupportedItem",
     "Fail",
+    "Fail2",
+    "Fail5",
+    "FailItem",
+    "Fallback",
     "Feature",
     "FeatureRequirement",
     "Features",
+    "Features2",
+    "FeedFieldMapping",
+    "FeedFieldMapping11",
+    "FeedFieldMapping13",
+    "FeedFieldMapping18",
+    "FeedFieldMapping19",
+    "FeedFieldMapping2",
+    "FeedFieldMapping20",
+    "FeedFieldMapping4",
     "FeedFormat",
     "FeedbackSource",
     "Field1",
+    "Field5",
+    "FieldBindings",
     "FieldModel",
+    "File",
+    "Filters",
     "Finding",
     "FlatRatePricingOption",
     "Flight",
     "FlightItem",
     "FollowUp",
+    "Follows",
+    "Follows1",
+    "Follows2",
+    "Follows3",
+    "Follows4",
+    "Follows5",
+    "FontRole",
+    "FontRole2",
     "Fonts",
+    "Forecast",
+    "Forecast1",
+    "Forecast2",
     "ForecastMethod",
     "ForecastPoint",
     "ForecastRange",
     "ForecastRangeUnit",
     "ForecastableMetric",
     "Format",
+    "Format12",
+    "Format14",
+    "Format5",
+    "Format7",
     "FormatCard",
     "FormatCardDetailed",
     "FormatId",
     "FormatIdParameter",
+    "FormatIdsPendingItem",
+    "FormatIdsToProvideItem",
     "FrameRate",
     "FrameRateType",
+    "Frequency",
+    "Frequency1",
+    "Frequency2",
+    "Frequency3",
+    "Frequency4",
+    "Frequency5",
     "FrequencyCap",
+    "FrequencyCap1",
+    "FrequencyCap10",
+    "FrequencyCap11",
+    "FrequencyCap13",
+    "FrequencyCap14",
+    "FrequencyCap15",
+    "FrequencyCap16",
+    "FrequencyCap17",
+    "FrequencyCap19",
+    "FrequencyCap2",
+    "FrequencyCap20",
+    "FrequencyCap4",
+    "FrequencyCap5",
+    "FrequencyCap6",
+    "FrequencyCap7",
+    "FrequencyCap8",
     "FrequencyCapScope",
     "FuelType",
     "GenerationContext",
@@ -1767,27 +5778,62 @@
     "Geo",
     "GeoCountriesExcludeItem",
     "GeoCountry",
+    "GeoLevel",
     "GeoMetro",
+    "GeoMetro5",
     "GeoMetros",
     "GeoMetrosExcludeItem",
+    "GeoMetrosExcludeItem5",
     "GeoPostalArea",
+    "GeoPostalArea5",
     "GeoPostalAreas",
     "GeoPostalAreasExcludeItem",
+    "GeoPostalAreasExcludeItem5",
     "GeoProximity",
+    "GeoProximity1",
+    "GeoProximity10",
+    "GeoProximity12",
+    "GeoProximity13",
+    "GeoProximity15",
+    "GeoProximity16",
+    "GeoProximity18",
+    "GeoProximity19",
     "GeoProximity2",
-    "GeoProximity3",
+    "GeoProximity21",
+    "GeoProximity22",
+    "GeoProximity23",
+    "GeoProximity24",
+    "GeoProximity25",
+    "GeoProximity27",
+    "GeoProximity28",
+    "GeoProximity4",
     "GeoProximity5",
-    "GeoProximity6",
+    "GeoProximity9",
     "GeoRegion",
     "GeoRegionsExcludeItem",
     "GeoTargets",
     "GeographicBreakdownSupport",
     "GeographicTargetingLevel",
     "Geometry",
+    "Geometry11",
+    "Geometry12",
+    "Geometry14",
+    "Geometry15",
+    "Geometry17",
+    "Geometry18",
     "Geometry2",
+    "Geometry20",
+    "Geometry21",
+    "Geometry22",
+    "Geometry23",
+    "Geometry24",
+    "Geometry26",
+    "Geometry27",
     "Geometry3",
     "Geometry5",
     "Geometry6",
+    "Geometry8",
+    "Geometry9",
     "GetAccountFinancialsRequest",
     "GetAccountFinancialsResponse",
     "GetAccountFinancialsResponse1",
@@ -1804,16 +5850,22 @@
     "GetContentStandardsResponse",
     "GetContentStandardsResponse1",
     "GetContentStandardsResponse2",
+    "GetContentStandardsResponse3",
+    "GetContentStandardsResponse4",
     "GetCreativeDeliveryRequest",
     "GetCreativeDeliveryResponse",
     "GetCreativeFeaturesRequest",
     "GetCreativeFeaturesResponse",
     "GetCreativeFeaturesResponse1",
     "GetCreativeFeaturesResponse2",
+    "GetCreativeFeaturesResponse3",
+    "GetCreativeFeaturesResponse4",
     "GetMediaBuyArtifactsRequest",
     "GetMediaBuyArtifactsResponse",
     "GetMediaBuyArtifactsResponse1",
     "GetMediaBuyArtifactsResponse2",
+    "GetMediaBuyArtifactsResponse3",
+    "GetMediaBuyArtifactsResponse4",
     "GetMediaBuyDeliveryRequest",
     "GetMediaBuyDeliveryResponse",
     "GetMediaBuysRequest",
@@ -1839,9 +5891,18 @@
     "GovernanceDomain",
     "GovernanceMode",
     "GovernancePhase",
+    "GovernedAction",
+    "Grps",
+    "Grps1",
+    "Grps2",
+    "Grps3",
+    "Grps4",
+    "Grps5",
     "Gtin",
+    "GuestTalentItem",
     "Handoff",
     "HdrFormat",
+    "Health",
     "HistoryEntryType",
     "HistoryItem",
     "HotelItem",
@@ -1850,43 +5911,319 @@
     "HtmlAssetRequirements",
     "HttpMethod",
     "HumanOversight",
+    "IdType",
+    "Idempotency",
     "Identifier",
+    "Identifier5",
     "Identifiers",
+    "Identity",
     "IdentityMatchRequest",
     "IdentityMatchResponse",
     "IfNotCovered",
+    "Image",
     "ImageAsset",
     "ImageAssetRequirements",
+    "Impressions",
+    "Impressions1",
+    "Impressions2",
+    "Impressions3",
+    "Impressions4",
+    "Impressions5",
     "IncompleteItem",
+    "IndustryIdentifier",
+    "IndustryIdentifier12",
+    "IndustryIdentifier2",
+    "IndustryIdentifier8",
     "Input",
     "Input1",
-    "Input4",
-    "Input6",
+    "Input10",
+    "Input12",
+    "Input15",
+    "Input3",
+    "Input8",
+    "InputFormatId",
     "InsertionOrder",
     "Installment",
     "InstallmentDeadlines",
     "InstallmentStatus",
+    "IntegrationAction",
     "Intent",
     "Invoice",
+    "InvoiceRecipient",
     "IoAcceptance",
+    "Issue",
     "ItemIssue",
+    "Items",
+    "Items1",
     "JavascriptAsset",
     "JavascriptAssetRequirements",
     "JavascriptModuleType",
     "JobItem",
     "Jurisdiction",
+    "Jurisdiction1",
+    "Jurisdiction10",
+    "Jurisdiction100",
+    "Jurisdiction102",
+    "Jurisdiction103",
+    "Jurisdiction104",
+    "Jurisdiction105",
+    "Jurisdiction106",
+    "Jurisdiction107",
+    "Jurisdiction108",
+    "Jurisdiction109",
+    "Jurisdiction11",
+    "Jurisdiction110",
+    "Jurisdiction111",
+    "Jurisdiction112",
+    "Jurisdiction113",
+    "Jurisdiction114",
+    "Jurisdiction115",
+    "Jurisdiction117",
+    "Jurisdiction118",
+    "Jurisdiction119",
+    "Jurisdiction12",
+    "Jurisdiction120",
+    "Jurisdiction122",
+    "Jurisdiction123",
+    "Jurisdiction124",
+    "Jurisdiction125",
+    "Jurisdiction126",
+    "Jurisdiction127",
+    "Jurisdiction128",
+    "Jurisdiction129",
+    "Jurisdiction13",
+    "Jurisdiction130",
+    "Jurisdiction132",
+    "Jurisdiction133",
+    "Jurisdiction134",
+    "Jurisdiction135",
+    "Jurisdiction136",
+    "Jurisdiction137",
+    "Jurisdiction138",
+    "Jurisdiction139",
+    "Jurisdiction14",
+    "Jurisdiction140",
+    "Jurisdiction141",
+    "Jurisdiction142",
+    "Jurisdiction143",
+    "Jurisdiction144",
+    "Jurisdiction146",
+    "Jurisdiction147",
+    "Jurisdiction148",
+    "Jurisdiction149",
+    "Jurisdiction150",
+    "Jurisdiction151",
+    "Jurisdiction152",
+    "Jurisdiction153",
+    "Jurisdiction154",
+    "Jurisdiction155",
+    "Jurisdiction156",
+    "Jurisdiction157",
+    "Jurisdiction158",
+    "Jurisdiction159",
+    "Jurisdiction16",
+    "Jurisdiction161",
+    "Jurisdiction162",
+    "Jurisdiction163",
+    "Jurisdiction164",
+    "Jurisdiction165",
+    "Jurisdiction166",
+    "Jurisdiction167",
+    "Jurisdiction168",
+    "Jurisdiction169",
+    "Jurisdiction17",
+    "Jurisdiction170",
+    "Jurisdiction171",
+    "Jurisdiction172",
+    "Jurisdiction173",
+    "Jurisdiction174",
+    "Jurisdiction175",
+    "Jurisdiction176",
+    "Jurisdiction177",
+    "Jurisdiction178",
+    "Jurisdiction179",
+    "Jurisdiction18",
+    "Jurisdiction180",
+    "Jurisdiction181",
+    "Jurisdiction182",
+    "Jurisdiction183",
+    "Jurisdiction184",
+    "Jurisdiction185",
+    "Jurisdiction186",
+    "Jurisdiction187",
+    "Jurisdiction188",
+    "Jurisdiction189",
+    "Jurisdiction19",
+    "Jurisdiction191",
+    "Jurisdiction192",
+    "Jurisdiction193",
+    "Jurisdiction194",
+    "Jurisdiction195",
+    "Jurisdiction196",
+    "Jurisdiction197",
+    "Jurisdiction198",
+    "Jurisdiction199",
+    "Jurisdiction2",
+    "Jurisdiction20",
+    "Jurisdiction200",
+    "Jurisdiction201",
+    "Jurisdiction202",
+    "Jurisdiction203",
+    "Jurisdiction204",
+    "Jurisdiction207",
+    "Jurisdiction208",
+    "Jurisdiction209",
+    "Jurisdiction21",
+    "Jurisdiction210",
+    "Jurisdiction211",
+    "Jurisdiction212",
+    "Jurisdiction213",
+    "Jurisdiction214",
+    "Jurisdiction215",
+    "Jurisdiction216",
+    "Jurisdiction217",
+    "Jurisdiction218",
+    "Jurisdiction219",
+    "Jurisdiction22",
+    "Jurisdiction220",
+    "Jurisdiction222",
+    "Jurisdiction223",
+    "Jurisdiction224",
+    "Jurisdiction225",
+    "Jurisdiction226",
+    "Jurisdiction227",
+    "Jurisdiction228",
+    "Jurisdiction229",
+    "Jurisdiction23",
+    "Jurisdiction230",
+    "Jurisdiction232",
+    "Jurisdiction233",
+    "Jurisdiction234",
+    "Jurisdiction235",
+    "Jurisdiction236",
+    "Jurisdiction237",
+    "Jurisdiction238",
+    "Jurisdiction239",
+    "Jurisdiction24",
+    "Jurisdiction240",
+    "Jurisdiction241",
+    "Jurisdiction242",
+    "Jurisdiction243",
+    "Jurisdiction244",
+    "Jurisdiction245",
+    "Jurisdiction246",
+    "Jurisdiction247",
+    "Jurisdiction248",
+    "Jurisdiction249",
+    "Jurisdiction25",
+    "Jurisdiction250",
+    "Jurisdiction251",
+    "Jurisdiction252",
+    "Jurisdiction253",
+    "Jurisdiction254",
+    "Jurisdiction255",
+    "Jurisdiction256",
+    "Jurisdiction257",
+    "Jurisdiction258",
+    "Jurisdiction259",
+    "Jurisdiction26",
+    "Jurisdiction260",
+    "Jurisdiction262",
+    "Jurisdiction263",
+    "Jurisdiction264",
+    "Jurisdiction265",
+    "Jurisdiction27",
+    "Jurisdiction28",
+    "Jurisdiction29",
+    "Jurisdiction3",
+    "Jurisdiction30",
+    "Jurisdiction31",
+    "Jurisdiction32",
+    "Jurisdiction33",
+    "Jurisdiction34",
+    "Jurisdiction35",
+    "Jurisdiction36",
+    "Jurisdiction37",
+    "Jurisdiction38",
+    "Jurisdiction39",
+    "Jurisdiction4",
+    "Jurisdiction40",
+    "Jurisdiction41",
+    "Jurisdiction42",
+    "Jurisdiction43",
+    "Jurisdiction44",
+    "Jurisdiction46",
+    "Jurisdiction47",
+    "Jurisdiction48",
+    "Jurisdiction49",
+    "Jurisdiction5",
+    "Jurisdiction51",
+    "Jurisdiction52",
+    "Jurisdiction53",
+    "Jurisdiction54",
+    "Jurisdiction55",
+    "Jurisdiction56",
+    "Jurisdiction57",
+    "Jurisdiction58",
+    "Jurisdiction59",
+    "Jurisdiction6",
+    "Jurisdiction61",
+    "Jurisdiction62",
+    "Jurisdiction63",
+    "Jurisdiction64",
+    "Jurisdiction65",
+    "Jurisdiction66",
+    "Jurisdiction67",
+    "Jurisdiction68",
+    "Jurisdiction69",
+    "Jurisdiction7",
+    "Jurisdiction70",
+    "Jurisdiction71",
+    "Jurisdiction72",
+    "Jurisdiction73",
+    "Jurisdiction74",
+    "Jurisdiction77",
+    "Jurisdiction78",
+    "Jurisdiction79",
+    "Jurisdiction8",
+    "Jurisdiction80",
+    "Jurisdiction81",
+    "Jurisdiction82",
+    "Jurisdiction83",
+    "Jurisdiction84",
+    "Jurisdiction85",
+    "Jurisdiction87",
+    "Jurisdiction88",
+    "Jurisdiction89",
+    "Jurisdiction9",
+    "Jurisdiction90",
+    "Jurisdiction91",
+    "Jurisdiction92",
+    "Jurisdiction93",
+    "Jurisdiction94",
+    "Jurisdiction95",
+    "Jurisdiction96",
+    "Jurisdiction97",
+    "Jurisdiction98",
+    "Jurisdiction99",
+    "Justify",
     "KellerType",
     "Keyword",
     "KeywordTarget",
+    "KeywordTarget5",
     "KeywordTargets",
     "KeywordTargetsAddItem",
     "KeywordTargetsRemoveItem",
     "Kind",
+    "LandingPage",
     "LandingPageRequirement",
     "LanguageItem",
     "LastTopUp",
+    "Layout",
     "Level",
     "LimitedSeries",
+    "Link",
+    "List",
     "ListAccountsRequest",
     "ListAccountsResponse",
     "ListCollectionListsRequest",
@@ -1895,6 +6232,8 @@
     "ListContentStandardsResponse",
     "ListContentStandardsResponse1",
     "ListContentStandardsResponse2",
+    "ListContentStandardsResponse3",
+    "ListContentStandardsResponse4",
     "ListCreativeFormatsRequest",
     "ListCreativeFormatsRequestCreativeAgent",
     "ListCreativeFormatsResponse",
@@ -1910,11 +6249,14 @@
     "LogEventResponse",
     "LogEventResponse1",
     "LogEventResponse2",
+    "LogEventResponse3",
+    "LogEventResponse4",
     "Logo",
     "MajorVersion",
     "MakegoodPolicy",
     "MakegoodRemedy",
     "ManagedBy",
+    "Manifest",
     "MarkdownAsset",
     "MarkdownAssetRequirements",
     "MarkdownFlavor",
@@ -1928,9 +6270,16 @@
     "MaterialStage",
     "MaterialSubmission",
     "McpWebhookPayload",
+    "MeasuredImpressions",
+    "MeasuredImpressions1",
+    "MeasuredImpressions2",
+    "MeasuredImpressions3",
+    "MeasuredImpressions4",
+    "MeasuredImpressions5",
     "MeasurementPeriod",
     "MeasurementReadiness",
     "MeasurementTerms",
+    "MeasurementWindow",
     "MediaBuy",
     "MediaBuyDelivery",
     "MediaBuyFeatures",
@@ -1940,10 +6289,28 @@
     "Messaging",
     "Metadata",
     "Method",
+    "Method1",
+    "Method11",
+    "Method22",
+    "Method24",
+    "Method26",
+    "Method3",
+    "Method30",
+    "Method32",
+    "Method34",
+    "Method7",
+    "Method9",
     "Metric",
+    "Metric1",
+    "Metric11",
+    "Metric13",
+    "Metric3",
+    "Metric8",
     "MetricOptimization",
     "MetricType",
     "Metrics",
+    "Metrics2",
+    "Metrics3",
     "Metro",
     "MetroAreaSystem",
     "Mileage",
@@ -1955,9 +6322,13 @@
     "MoovAtomPosition",
     "MraidVersion",
     "NegativeKeyword",
+    "NegativeKeyword5",
     "NegativeKeywords",
     "NegativeKeywordsAddItem",
     "NegativeKeywordsRemoveItem",
+    "NegotiatedCapabilities",
+    "NewPackage",
+    "NoticePeriod",
     "NotificationType",
     "Objective",
     "Offer",
@@ -1965,13 +6336,25 @@
     "Offering",
     "OfferingAssetConstraint",
     "OfferingAssetGroup",
+    "OfflineDeliveryProtocol",
+    "OpentypeFeature",
     "OptimizationGoal",
     "OptimizationGoal1",
     "OptimizationGoal2",
+    "OptimizationGoals",
+    "OptimizationGoals1",
+    "OptimizationGoals11",
+    "OptimizationGoals3",
+    "OptimizationGoals5",
+    "OptimizationGoals7",
+    "OptimizationGoals8",
+    "OptimizationGoals9",
     "Orientation",
     "Origin",
     "OutcomeMeasurement",
     "OutcomeType",
+    "OutputFormat",
+    "OutputFormatId",
     "Overlay",
     "Pacing",
     "PackageRequest",
@@ -1980,51 +6363,82 @@
     "PaginationRequest",
     "PaginationResponse",
     "Parameters",
+    "Parameters4",
+    "Parameters5",
+    "Parameters6",
     "Params",
-    "Params1",
-    "Params2",
-    "Params3",
-    "Params4",
-    "Params5",
-    "Params6",
     "PartialFailure",
+    "Pas",
     "Pass",
+    "Pass2",
+    "Pass5",
     "PaymentStatus",
     "PaymentTerms",
+    "Per",
     "PerformanceFeedback",
     "PerformanceStandard",
     "PerformanceStandardMetric",
     "Period",
+    "Persistence",
+    "PersistenceEnum",
     "Placement",
     "PlacementDefinition",
     "PlacementTags",
     "Plan",
     "PlanSummary",
     "PlannedDelivery",
+    "Platform",
+    "Plays",
+    "Plays1",
+    "Plays2",
+    "Plays3",
+    "Plays4",
+    "Plays5",
+    "Point",
+    "Point1",
+    "Point2",
+    "Policy",
     "PolicyCategory",
+    "PolicyCategoryDefinition",
     "PolicyEnforcementLevel",
     "PolicyEntry",
     "PolicyReference",
+    "PolicyViolationDetails",
     "Portfolio",
+    "Position",
+    "PostClick",
+    "PostClick6",
+    "PostClickItem",
+    "PostView",
+    "PostView6",
+    "PostViewItem",
     "PostalArea",
     "PostalCodeSystem",
-    "Preferred",
+    "PreferredDeliveryType",
     "Preview",
     "Preview1",
+    "Preview10",
+    "Preview11",
+    "Preview13",
+    "Preview14",
+    "Preview15",
     "Preview2",
     "Preview3",
-    "Preview5",
+    "Preview4",
     "Preview6",
     "Preview7",
+    "Preview9",
     "PreviewAsset",
     "PreviewCreativeRequest",
-    "PreviewCreativeRequest1",
-    "PreviewCreativeRequest2",
-    "PreviewCreativeRequest3",
     "PreviewCreativeResponse",
     "PreviewCreativeResponse1",
     "PreviewCreativeResponse2",
     "PreviewCreativeResponse3",
+    "PreviewCreativeResponse4",
+    "PreviewCreativeResponse5",
+    "PreviewCreativeResponse6",
+    "PreviewError",
+    "PreviewError1",
     "PreviewInput",
     "PreviewOutputFormat",
     "PreviewRender",
@@ -2034,9 +6448,116 @@
     "Price",
     "PriceAdjustmentKind",
     "PriceBreakdown",
+    "PriceBreakdown10",
+    "PriceBreakdown3",
+    "PriceBreakdown4",
+    "PriceBreakdown5",
+    "PriceBreakdown6",
+    "PriceBreakdown7",
+    "PriceBreakdown8",
+    "PriceBreakdown9",
     "PriceGuidance",
     "PricingModel",
     "PricingOption",
+    "PricingOption1",
+    "PricingOption101",
+    "PricingOption102",
+    "PricingOption103",
+    "PricingOption104",
+    "PricingOption105",
+    "PricingOption106",
+    "PricingOption107",
+    "PricingOption108",
+    "PricingOption109",
+    "PricingOption111",
+    "PricingOption112",
+    "PricingOption113",
+    "PricingOption114",
+    "PricingOption115",
+    "PricingOption116",
+    "PricingOption117",
+    "PricingOption118",
+    "PricingOption119",
+    "PricingOption121",
+    "PricingOption122",
+    "PricingOption123",
+    "PricingOption124",
+    "PricingOption125",
+    "PricingOption126",
+    "PricingOption127",
+    "PricingOption128",
+    "PricingOption129",
+    "PricingOption131",
+    "PricingOption132",
+    "PricingOption133",
+    "PricingOption134",
+    "PricingOption135",
+    "PricingOption136",
+    "PricingOption137",
+    "PricingOption138",
+    "PricingOption139",
+    "PricingOption141",
+    "PricingOption142",
+    "PricingOption143",
+    "PricingOption144",
+    "PricingOption145",
+    "PricingOption146",
+    "PricingOption147",
+    "PricingOption148",
+    "PricingOption149",
+    "PricingOption151",
+    "PricingOption152",
+    "PricingOption153",
+    "PricingOption154",
+    "PricingOption155",
+    "PricingOption156",
+    "PricingOption157",
+    "PricingOption158",
+    "PricingOption159",
+    "PricingOption161",
+    "PricingOption162",
+    "PricingOption163",
+    "PricingOption164",
+    "PricingOption165",
+    "PricingOption166",
+    "PricingOption167",
+    "PricingOption168",
+    "PricingOption169",
+    "PricingOption171",
+    "PricingOption172",
+    "PricingOption173",
+    "PricingOption174",
+    "PricingOption175",
+    "PricingOption176",
+    "PricingOption177",
+    "PricingOption178",
+    "PricingOption179",
+    "PricingOption181",
+    "PricingOption182",
+    "PricingOption183",
+    "PricingOption184",
+    "PricingOption185",
+    "PricingOption186",
+    "PricingOption187",
+    "PricingOption188",
+    "PricingOption189",
+    "PricingOption2",
+    "PricingOption3",
+    "PricingOption4",
+    "PricingOption5",
+    "PricingOption6",
+    "PricingOption7",
+    "PricingOption8",
+    "PricingOption9",
+    "PricingOptions",
+    "PricingOptions1",
+    "PricingOptions2",
+    "PricingOptions3",
+    "PricingOptions4",
+    "PricingOptions5",
+    "PricingOptions6",
+    "PricingOptions7",
+    "PricingOptions8",
     "Primary",
     "Primary1",
     "Primary1Item",
@@ -2048,10 +6569,19 @@
     "ProductCardDetailed",
     "ProductFilters",
     "ProductionQuality",
+    "ProfileVisits",
+    "ProfileVisits1",
+    "ProfileVisits2",
+    "ProfileVisits3",
+    "ProfileVisits4",
+    "ProfileVisits5",
+    "Progress",
     "Property",
     "PropertyError",
     "PropertyFeature",
     "PropertyFeatureDefinition",
+    "PropertyFeatureResult",
+    "PropertyFeatureValue",
     "PropertyId",
     "PropertyIdentifierTypes",
     "PropertyList",
@@ -2066,60 +6596,649 @@
     "ProtocolEnvelope",
     "ProtocolResponse",
     "Provenance",
+    "Provenance10",
+    "Provenance100",
+    "Provenance101",
+    "Provenance102",
+    "Provenance103",
+    "Provenance104",
+    "Provenance105",
+    "Provenance106",
+    "Provenance107",
+    "Provenance108",
+    "Provenance109",
+    "Provenance11",
+    "Provenance111",
+    "Provenance112",
+    "Provenance113",
+    "Provenance114",
+    "Provenance116",
+    "Provenance117",
+    "Provenance118",
+    "Provenance119",
+    "Provenance12",
+    "Provenance120",
+    "Provenance121",
+    "Provenance122",
+    "Provenance123",
+    "Provenance124",
+    "Provenance126",
+    "Provenance127",
+    "Provenance128",
+    "Provenance129",
+    "Provenance13",
+    "Provenance130",
+    "Provenance131",
+    "Provenance132",
+    "Provenance133",
+    "Provenance134",
+    "Provenance135",
+    "Provenance136",
+    "Provenance137",
+    "Provenance139",
+    "Provenance14",
+    "Provenance140",
+    "Provenance141",
+    "Provenance142",
+    "Provenance143",
+    "Provenance144",
+    "Provenance145",
+    "Provenance146",
+    "Provenance147",
+    "Provenance148",
+    "Provenance149",
+    "Provenance150",
+    "Provenance151",
+    "Provenance153",
+    "Provenance154",
+    "Provenance155",
+    "Provenance156",
+    "Provenance157",
+    "Provenance158",
+    "Provenance159",
+    "Provenance16",
+    "Provenance160",
+    "Provenance161",
+    "Provenance162",
+    "Provenance163",
+    "Provenance164",
+    "Provenance165",
+    "Provenance166",
+    "Provenance167",
+    "Provenance168",
+    "Provenance169",
+    "Provenance17",
+    "Provenance170",
+    "Provenance171",
+    "Provenance172",
+    "Provenance173",
+    "Provenance174",
+    "Provenance175",
+    "Provenance176",
+    "Provenance177",
+    "Provenance178",
+    "Provenance179",
+    "Provenance18",
+    "Provenance181",
+    "Provenance182",
+    "Provenance183",
+    "Provenance184",
+    "Provenance185",
+    "Provenance186",
+    "Provenance187",
+    "Provenance188",
+    "Provenance189",
+    "Provenance19",
+    "Provenance190",
+    "Provenance191",
+    "Provenance192",
+    "Provenance193",
+    "Provenance195",
+    "Provenance196",
+    "Provenance197",
+    "Provenance198",
+    "Provenance199",
+    "Provenance2",
+    "Provenance20",
+    "Provenance200",
+    "Provenance201",
+    "Provenance202",
+    "Provenance203",
+    "Provenance204",
+    "Provenance205",
+    "Provenance206",
+    "Provenance207",
+    "Provenance209",
+    "Provenance21",
+    "Provenance210",
+    "Provenance211",
+    "Provenance212",
+    "Provenance213",
+    "Provenance214",
+    "Provenance215",
+    "Provenance216",
+    "Provenance217",
+    "Provenance219",
+    "Provenance22",
+    "Provenance220",
+    "Provenance221",
+    "Provenance222",
+    "Provenance223",
+    "Provenance224",
+    "Provenance225",
+    "Provenance226",
+    "Provenance227",
+    "Provenance228",
+    "Provenance229",
+    "Provenance23",
+    "Provenance230",
+    "Provenance231",
+    "Provenance232",
+    "Provenance233",
+    "Provenance234",
+    "Provenance235",
+    "Provenance236",
+    "Provenance237",
+    "Provenance238",
+    "Provenance239",
+    "Provenance24",
+    "Provenance240",
+    "Provenance241",
+    "Provenance242",
+    "Provenance243",
+    "Provenance244",
+    "Provenance245",
+    "Provenance247",
+    "Provenance248",
+    "Provenance249",
+    "Provenance25",
+    "Provenance250",
+    "Provenance26",
+    "Provenance27",
+    "Provenance28",
+    "Provenance29",
+    "Provenance3",
+    "Provenance30",
+    "Provenance31",
+    "Provenance32",
+    "Provenance33",
+    "Provenance34",
+    "Provenance35",
+    "Provenance36",
+    "Provenance37",
+    "Provenance38",
+    "Provenance39",
+    "Provenance4",
+    "Provenance40",
+    "Provenance41",
+    "Provenance42",
+    "Provenance44",
+    "Provenance45",
+    "Provenance46",
+    "Provenance47",
+    "Provenance49",
+    "Provenance5",
+    "Provenance50",
+    "Provenance51",
+    "Provenance52",
+    "Provenance53",
+    "Provenance54",
+    "Provenance55",
+    "Provenance56",
+    "Provenance57",
+    "Provenance59",
+    "Provenance6",
+    "Provenance60",
+    "Provenance61",
+    "Provenance62",
+    "Provenance63",
+    "Provenance64",
+    "Provenance65",
+    "Provenance66",
+    "Provenance67",
+    "Provenance68",
+    "Provenance69",
+    "Provenance7",
+    "Provenance70",
+    "Provenance71",
+    "Provenance73",
+    "Provenance74",
+    "Provenance75",
+    "Provenance76",
+    "Provenance77",
+    "Provenance78",
+    "Provenance79",
+    "Provenance8",
+    "Provenance80",
+    "Provenance81",
+    "Provenance83",
+    "Provenance84",
+    "Provenance85",
+    "Provenance86",
+    "Provenance87",
+    "Provenance88",
+    "Provenance89",
+    "Provenance9",
+    "Provenance90",
+    "Provenance91",
+    "Provenance92",
+    "Provenance93",
+    "Provenance94",
+    "Provenance95",
+    "Provenance97",
+    "Provenance98",
+    "Provenance99",
     "ProvidePerformanceFeedbackRequest",
     "ProvidePerformanceFeedbackResponse",
     "ProvidePerformanceFeedbackResponse1",
     "ProvidePerformanceFeedbackResponse2",
+    "ProvidePerformanceFeedbackResponse3",
+    "ProvidePerformanceFeedbackResponse4",
     "Provider",
     "PublisherDomain",
     "PublisherIdentifierTypes",
+    "PublisherProperties",
+    "PublisherProperties1",
+    "PublisherProperties2",
+    "PublisherProperties3",
     "PublisherPropertySelector",
     "PublisherPropertySelector1",
     "PublisherPropertySelector2",
     "PublisherPropertySelector3",
+    "PurchaseType",
     "PushNotificationConfig",
+    "Quality",
     "QuartileData",
     "QuerySummary",
     "Radius",
+    "Radius11",
+    "Radius12",
+    "Radius2",
+    "Radius20",
+    "Radius21",
+    "Radius22",
+    "Radius23",
+    "Radius24",
+    "Radius26",
+    "Radius27",
+    "Radius3",
+    "Radius5",
+    "Radius6",
+    "Radius8",
+    "Radius9",
     "Range",
+    "RateLimitedDetails",
+    "Reach",
+    "Reach1",
+    "Reach2",
+    "Reach3",
+    "Reach4",
+    "Reach5",
     "ReachUnit",
     "RealEstateItem",
     "Reason",
     "Record",
     "Recovery",
     "ReferenceAsset",
+    "ReferenceAsset13",
+    "ReferenceAsset2",
+    "ReferenceAsset9",
     "Refine",
     "Refine1",
     "Refine2",
+    "Refine4",
+    "Refine5",
     "RefinementAppliedItem",
     "Region",
+    "RegulatoryBasi",
+    "RegulatoryFramework",
     "RelatedCollection",
+    "Remove",
+    "Remove1",
+    "Remove2",
     "RenderGuidance",
+    "RenderGuidance1",
+    "RenderGuidance10",
+    "RenderGuidance100",
+    "RenderGuidance101",
+    "RenderGuidance102",
+    "RenderGuidance103",
+    "RenderGuidance104",
+    "RenderGuidance105",
+    "RenderGuidance106",
+    "RenderGuidance107",
+    "RenderGuidance108",
+    "RenderGuidance11",
+    "RenderGuidance110",
+    "RenderGuidance111",
+    "RenderGuidance112",
+    "RenderGuidance113",
+    "RenderGuidance115",
+    "RenderGuidance116",
+    "RenderGuidance117",
+    "RenderGuidance118",
+    "RenderGuidance119",
+    "RenderGuidance12",
+    "RenderGuidance120",
+    "RenderGuidance121",
+    "RenderGuidance122",
+    "RenderGuidance123",
+    "RenderGuidance125",
+    "RenderGuidance126",
+    "RenderGuidance127",
+    "RenderGuidance128",
+    "RenderGuidance129",
+    "RenderGuidance13",
+    "RenderGuidance130",
+    "RenderGuidance131",
+    "RenderGuidance132",
+    "RenderGuidance133",
+    "RenderGuidance134",
+    "RenderGuidance135",
+    "RenderGuidance136",
+    "RenderGuidance138",
+    "RenderGuidance139",
+    "RenderGuidance140",
+    "RenderGuidance141",
+    "RenderGuidance142",
+    "RenderGuidance143",
+    "RenderGuidance144",
+    "RenderGuidance145",
+    "RenderGuidance146",
+    "RenderGuidance147",
+    "RenderGuidance148",
+    "RenderGuidance149",
+    "RenderGuidance15",
+    "RenderGuidance150",
+    "RenderGuidance152",
+    "RenderGuidance153",
+    "RenderGuidance154",
+    "RenderGuidance155",
+    "RenderGuidance156",
+    "RenderGuidance157",
+    "RenderGuidance158",
+    "RenderGuidance159",
+    "RenderGuidance16",
+    "RenderGuidance160",
+    "RenderGuidance161",
+    "RenderGuidance162",
+    "RenderGuidance163",
+    "RenderGuidance164",
+    "RenderGuidance165",
+    "RenderGuidance166",
+    "RenderGuidance167",
+    "RenderGuidance168",
+    "RenderGuidance169",
+    "RenderGuidance17",
+    "RenderGuidance170",
+    "RenderGuidance171",
+    "RenderGuidance172",
+    "RenderGuidance173",
+    "RenderGuidance174",
+    "RenderGuidance175",
+    "RenderGuidance176",
+    "RenderGuidance177",
+    "RenderGuidance178",
+    "RenderGuidance18",
+    "RenderGuidance180",
+    "RenderGuidance181",
+    "RenderGuidance182",
+    "RenderGuidance183",
+    "RenderGuidance184",
+    "RenderGuidance185",
+    "RenderGuidance186",
+    "RenderGuidance187",
+    "RenderGuidance188",
+    "RenderGuidance189",
+    "RenderGuidance19",
+    "RenderGuidance190",
+    "RenderGuidance191",
+    "RenderGuidance192",
+    "RenderGuidance195",
+    "RenderGuidance196",
+    "RenderGuidance197",
+    "RenderGuidance198",
+    "RenderGuidance199",
+    "RenderGuidance2",
+    "RenderGuidance20",
+    "RenderGuidance200",
+    "RenderGuidance201",
+    "RenderGuidance202",
+    "RenderGuidance203",
+    "RenderGuidance204",
+    "RenderGuidance205",
+    "RenderGuidance206",
+    "RenderGuidance207",
+    "RenderGuidance209",
+    "RenderGuidance21",
+    "RenderGuidance210",
+    "RenderGuidance211",
+    "RenderGuidance212",
+    "RenderGuidance213",
+    "RenderGuidance214",
+    "RenderGuidance215",
+    "RenderGuidance216",
+    "RenderGuidance217",
+    "RenderGuidance219",
+    "RenderGuidance22",
+    "RenderGuidance220",
+    "RenderGuidance221",
+    "RenderGuidance222",
+    "RenderGuidance223",
+    "RenderGuidance224",
+    "RenderGuidance225",
+    "RenderGuidance226",
+    "RenderGuidance227",
+    "RenderGuidance228",
+    "RenderGuidance229",
+    "RenderGuidance23",
+    "RenderGuidance230",
+    "RenderGuidance231",
+    "RenderGuidance232",
+    "RenderGuidance233",
+    "RenderGuidance234",
+    "RenderGuidance235",
+    "RenderGuidance236",
+    "RenderGuidance237",
+    "RenderGuidance238",
+    "RenderGuidance239",
+    "RenderGuidance24",
+    "RenderGuidance240",
+    "RenderGuidance241",
+    "RenderGuidance242",
+    "RenderGuidance243",
+    "RenderGuidance244",
+    "RenderGuidance245",
+    "RenderGuidance247",
+    "RenderGuidance248",
+    "RenderGuidance249",
+    "RenderGuidance25",
+    "RenderGuidance250",
+    "RenderGuidance26",
+    "RenderGuidance27",
+    "RenderGuidance28",
+    "RenderGuidance29",
+    "RenderGuidance3",
+    "RenderGuidance30",
+    "RenderGuidance31",
+    "RenderGuidance32",
+    "RenderGuidance33",
+    "RenderGuidance34",
+    "RenderGuidance35",
+    "RenderGuidance36",
+    "RenderGuidance37",
+    "RenderGuidance38",
+    "RenderGuidance39",
+    "RenderGuidance4",
+    "RenderGuidance40",
+    "RenderGuidance41",
+    "RenderGuidance43",
+    "RenderGuidance44",
+    "RenderGuidance45",
+    "RenderGuidance46",
+    "RenderGuidance48",
+    "RenderGuidance49",
+    "RenderGuidance5",
+    "RenderGuidance50",
+    "RenderGuidance51",
+    "RenderGuidance52",
+    "RenderGuidance53",
+    "RenderGuidance54",
+    "RenderGuidance55",
+    "RenderGuidance56",
+    "RenderGuidance58",
+    "RenderGuidance59",
+    "RenderGuidance6",
+    "RenderGuidance60",
+    "RenderGuidance61",
+    "RenderGuidance62",
+    "RenderGuidance63",
+    "RenderGuidance64",
+    "RenderGuidance65",
+    "RenderGuidance66",
+    "RenderGuidance67",
+    "RenderGuidance68",
+    "RenderGuidance69",
+    "RenderGuidance7",
+    "RenderGuidance70",
+    "RenderGuidance72",
+    "RenderGuidance73",
+    "RenderGuidance74",
+    "RenderGuidance75",
+    "RenderGuidance76",
+    "RenderGuidance77",
+    "RenderGuidance78",
+    "RenderGuidance79",
+    "RenderGuidance8",
+    "RenderGuidance80",
+    "RenderGuidance82",
+    "RenderGuidance83",
+    "RenderGuidance84",
+    "RenderGuidance85",
+    "RenderGuidance86",
+    "RenderGuidance87",
+    "RenderGuidance88",
+    "RenderGuidance89",
+    "RenderGuidance9",
+    "RenderGuidance90",
+    "RenderGuidance91",
+    "RenderGuidance92",
+    "RenderGuidance93",
+    "RenderGuidance94",
+    "RenderGuidance96",
+    "RenderGuidance97",
+    "RenderGuidance98",
+    "RenderGuidance99",
     "Renders",
     "Renders1",
+    "Renders11",
+    "Renders13",
+    "Renders14",
+    "Renders15",
+    "Renders16",
+    "Renders17",
+    "Renders18",
+    "Renders19",
+    "Renders2",
+    "Renders20",
+    "Renders21",
+    "Renders22",
+    "Renders23",
+    "Renders3",
+    "Renders4",
+    "Renders5",
+    "Renders7",
+    "Renders9",
     "ReportPlanOutcomeRequest",
     "ReportPlanOutcomeResponse",
     "ReportUsageRequest",
     "ReportUsageResponse",
+    "ReportedMetric",
     "ReportedSpend",
-    "Reporting",
+    "ReportingBucket",
     "ReportingCapabilities",
+    "ReportingDeliveryMethod",
     "ReportingDimensions",
     "ReportingFrequency",
     "ReportingPeriod",
     "ReportingWebhook",
     "Request",
+    "RequestSigning",
+    "RequestType",
+    "RequestedMetric",
     "RequiredDisclosure",
+    "RequiredDisclosure10",
+    "RequiredDisclosure14",
+    "RequiredDisclosure2",
+    "RequiredEventType",
+    "RequiredFeatures",
     "RequiredGeoTargetingItem",
+    "RequiredPerformanceStandard",
+    "Requirement",
+    "Requirements",
+    "Requirements1",
+    "Requirements10",
+    "Requirements11",
+    "Requirements12",
+    "Requirements13",
+    "Requirements14",
+    "Requirements15",
+    "Requirements16",
+    "Requirements17",
+    "Requirements18",
+    "Requirements19",
+    "Requirements2",
+    "Requirements20",
+    "Requirements21",
+    "Requirements22",
+    "Requirements23",
+    "Requirements24",
+    "Requirements26",
+    "Requirements27",
+    "Requirements28",
+    "Requirements29",
+    "Requirements3",
+    "Requirements30",
+    "Requirements31",
+    "Requirements32",
+    "Requirements33",
+    "Requirements34",
+    "Requirements35",
+    "Requirements36",
+    "Requirements37",
+    "Requirements38",
+    "Requirements39",
+    "Requirements4",
+    "Requirements40",
+    "Requirements41",
+    "Requirements42",
+    "Requirements43",
+    "Requirements44",
+    "Requirements45",
+    "Requirements46",
+    "Requirements47",
+    "Requirements48",
+    "Requirements49",
+    "Requirements5",
+    "Requirements6",
+    "Requirements7",
+    "Requirements8",
+    "Requirements9",
     "ResolvedPolicy",
     "Response",
     "Response1",
+    "Response3",
+    "ResponseType",
     "Responsive",
     "RestrictedAttribute",
     "Result",
     "Results",
     "Results1",
+    "Results3",
+    "RevocationNotification",
     "Right",
+    "Right2",
+    "Right7",
     "RightType",
     "RightUse",
     "Rights",
@@ -2128,25 +7247,60 @@
     "RightsPricingOption",
     "RightsTerms",
     "Role",
+    "Role108",
+    "Role123",
+    "Role126",
+    "Role135",
+    "Role14",
+    "Role153",
+    "Role166",
+    "Role180",
+    "Role195",
+    "Role225",
+    "Role242",
+    "Role246",
+    "Role270",
+    "Role272",
+    "Role29",
+    "Role291",
+    "Role48",
+    "Role54",
+    "Role78",
+    "Role80",
+    "Role84",
+    "Row",
     "Salary",
     "SampleRate",
     "Sandbox",
+    "Saves",
+    "Saves1",
+    "Saves2",
+    "Saves3",
+    "Saves4",
+    "Saves5",
     "ScalarBinding",
     "ScanType",
     "Scenario",
+    "Scheme",
     "Scope",
-    "Scope2",
+    "Scope3",
+    "Scope5",
     "Secondary",
     "Secondary1",
     "Secondary1Item",
     "Security",
+    "Security13",
+    "Security2",
+    "Security9",
     "SelectionMode",
     "SellerResponse",
     "Sentiment",
+    "SessionStatus",
     "Setup",
     "Severity",
     "ShippingAddress",
     "SiCapabilities",
+    "SiComponentCatalog",
     "SiGetOfferingRequest",
     "SiGetOfferingResponse",
     "SiIdentity",
@@ -2163,20 +7317,15 @@
     "SignalDefinition",
     "SignalFilters",
     "SignalId",
+    "SignalId16",
+    "SignalId17",
+    "SignalId18",
     "SignalId2",
-    "SignalId3",
-    "SignalPricing",
-    "SignalPricing1",
-    "SignalPricing2",
-    "SignalPricing3",
+    "SignalId9",
+    "SignalIds",
+    "SignalIds1",
+    "SignalIds2",
     "SignalPricingOption",
-    "SignalPricingOption1",
-    "SignalPricingOption2",
-    "SignalPricingOption3",
-    "SignalPricingOption4",
-    "SignalPricingOption5",
-    "SignalPricingOption6",
-    "SignalPricingOption7",
     "SignalSource",
     "SignalTag",
     "SignalTags",
@@ -2184,6 +7333,10 @@
     "SignalTargeting1",
     "SignalTargeting2",
     "SignalTargeting3",
+    "SignalTargeting4",
+    "SignalTargeting5",
+    "SignalTargeting6",
+    "SignalType",
     "SignalValueType",
     "Signals",
     "Snapshot",
@@ -2191,33 +7344,78 @@
     "SnippetType",
     "Sort",
     "SortApplied",
+    "SortBy",
     "SortDirection",
     "SortMetric",
     "Source",
     "Special",
     "SpecialCategory",
+    "Specialism",
     "Spend",
+    "Spend2",
+    "Spend3",
+    "Spend4",
+    "Spend5",
+    "Spend6",
     "SponsoredIntelligence",
     "Standard",
     "StandardEnum",
     "StartTiming",
     "Status",
-    "Status15",
+    "Status11",
+    "Status13",
+    "Status17",
+    "Status18",
+    "Status22",
+    "Status37",
+    "Status48",
+    "Status49",
+    "Status51",
     "Status6",
     "StatusFilter",
+    "StatusFilter2",
+    "StatusFilter5",
     "StatusSummary",
     "Statuses",
     "StoreCatchment",
     "StoreItem",
+    "Style",
     "Summary",
+    "SupportedActionSource",
     "SupportedBillingEnum",
+    "SupportedCapabilities",
+    "SupportedChannel",
+    "SupportedDisclosurePosition",
+    "SupportedEventType",
     "SupportedIdentifierType",
+    "SupportedMacros",
     "SupportedMatchType",
     "SupportedMetric",
+    "SupportedPricingModel",
     "SupportedProtocol",
     "SupportedTarget",
     "SupportedTarget1",
+    "SupportedTarget3",
+    "SupportedUidType",
     "SupportedViewDuration",
+    "SupportsGeoBreakdown",
+    "Suppress",
+    "Suppress1",
+    "Suppress10",
+    "Suppress11",
+    "Suppress13",
+    "Suppress14",
+    "Suppress15",
+    "Suppress16",
+    "Suppress17",
+    "Suppress19",
+    "Suppress2",
+    "Suppress20",
+    "Suppress4",
+    "Suppress5",
+    "Suppress6",
+    "Suppress7",
+    "Suppress8",
     "Surface",
     "SyncAccountsRequest",
     "SyncAccountsResponse",
@@ -2227,11 +7425,15 @@
     "SyncAudiencesResponse",
     "SyncAudiencesResponse1",
     "SyncAudiencesResponse2",
+    "SyncAudiencesResponse3",
+    "SyncAudiencesResponse4",
     "SyncCatalogsInputRequired",
     "SyncCatalogsRequest",
     "SyncCatalogsResponse",
     "SyncCatalogsResponse1",
     "SyncCatalogsResponse2",
+    "SyncCatalogsResponse3",
+    "SyncCatalogsResponse4",
     "SyncCatalogsSubmitted",
     "SyncCatalogsWorking",
     "SyncCreativesInputRequired",
@@ -2239,14 +7441,30 @@
     "SyncCreativesResponse",
     "SyncCreativesResponse1",
     "SyncCreativesResponse2",
+    "SyncCreativesResponse3",
+    "SyncCreativesResponse4",
     "SyncCreativesSubmitted",
     "SyncCreativesWorking",
     "SyncEventSourcesRequest",
     "SyncEventSourcesResponse",
     "SyncEventSourcesResponse1",
     "SyncEventSourcesResponse2",
+    "SyncEventSourcesResponse3",
+    "SyncEventSourcesResponse4",
+    "SyncGovernanceRequest",
+    "SyncGovernanceResponse",
+    "SyncGovernanceResponse1",
+    "SyncGovernanceResponse2",
     "SyncPlansRequest",
     "SyncPlansResponse",
+    "System",
+    "System11",
+    "System15",
+    "System19",
+    "System2",
+    "System27",
+    "System6",
+    "System9",
     "Tag",
     "Tagline",
     "Tags",
@@ -2254,16 +7472,56 @@
     "TalentRole",
     "Target",
     "Target1",
+    "Target11",
+    "Target12",
+    "Target13",
+    "Target14",
+    "Target16",
+    "Target17",
+    "Target18",
+    "Target19",
     "Target2",
+    "Target21",
+    "Target22",
+    "Target23",
+    "Target24",
+    "Target25",
+    "Target26",
+    "Target27",
+    "Target28",
+    "Target29",
     "Target3",
+    "Target31",
+    "Target32",
+    "Target33",
+    "Target34",
     "Target4",
+    "Target6",
+    "Target7",
+    "Target8",
+    "Target9",
+    "TargetFormatId",
     "TargetFrequency",
     "TargetFrequency1",
+    "TargetFrequency10",
+    "TargetFrequency11",
+    "TargetFrequency13",
+    "TargetFrequency3",
+    "TargetFrequency5",
+    "TargetFrequency7",
+    "TargetFrequency9",
     "Targeting",
     "TargetingKv",
     "TargetingOverlay",
+    "TargetingOverlay4",
+    "Task",
     "TaskStatus",
     "TaskType",
+    "TasksGetRequest",
+    "TasksGetResponse",
+    "TasksListRequest",
+    "TasksListResponse",
+    "Template",
     "TerminationContext",
     "Terms",
     "Text",
@@ -2273,33 +7531,114 @@
     "TextAssetRequirements",
     "Thresholds",
     "TimeBasedPricingOption",
+    "TimeBudget",
     "TimeRange",
     "TimeUnit",
     "TmpError",
+    "TmpProviderRegistration",
+    "TmpProviderRegistration1",
+    "TmpProviderRegistration2",
     "TmpResponseType",
     "Tone",
     "TotalBudget",
     "TotalBudgetCap",
     "TotalBudgetGuidance",
     "Totals",
+    "TrackingEvent",
+    "TrackingEvent14",
+    "TrackingEvent18",
+    "TrackingEvent2",
+    "TrackingEvent22",
+    "TrackingEvent26",
+    "TrackingEvent30",
+    "TrackingEvent34",
+    "TrackingEvent42",
+    "TrackingEvent46",
+    "TrackingEvent50",
+    "TrackingEvent6",
     "TransactionIntent",
     "TranscriptFormat",
     "TranscriptSource",
     "TranscriptSource1",
+    "TranscriptSource13",
+    "TranscriptSource15",
+    "TranscriptSource19",
+    "TranscriptSource23",
+    "TranscriptSource3",
+    "TranscriptSource5",
+    "TranscriptSource9",
     "Transform",
     "Transmission",
     "Transport",
     "TransportMode",
     "TravelTime",
+    "TravelTime11",
+    "TravelTime12",
+    "TravelTime14",
+    "TravelTime15",
+    "TravelTime17",
+    "TravelTime18",
     "TravelTime2",
+    "TravelTime20",
+    "TravelTime21",
+    "TravelTime22",
+    "TravelTime23",
+    "TravelTime24",
+    "TravelTime26",
+    "TravelTime27",
     "TravelTime3",
     "TravelTime5",
     "TravelTime6",
+    "TravelTime8",
+    "TravelTime9",
     "TrustedMatch",
     "Type",
+    "Type107",
+    "Type13",
+    "Type17",
+    "Type19",
+    "Type28",
+    "Type31",
+    "Type33",
+    "Type34",
+    "Type36",
+    "Type39",
+    "Type4",
+    "Type43",
+    "Type59",
+    "Type6",
+    "Type63",
+    "Type65",
+    "Type69",
+    "Type78",
+    "Type88",
+    "Type95",
+    "Type99",
+    "UiElement",
     "Uid",
+    "Uid10",
+    "Uid11",
+    "Uid2",
+    "Uid3",
+    "Uid4",
+    "Uid5",
+    "Uid7",
+    "Uid8",
+    "Uid9",
     "UidType",
     "Unit",
+    "Unit100",
+    "Unit101",
+    "Unit11",
+    "Unit12",
+    "Unit128",
+    "Unit129",
+    "Unit23",
+    "Unit24",
+    "Unit47",
+    "Unit52",
+    "Unit77",
+    "Unit78",
     "UniversalMacro",
     "UpdateCollectionListRequest",
     "UpdateCollectionListResponse",
@@ -2307,30 +7646,52 @@
     "UpdateContentStandardsResponse",
     "UpdateContentStandardsResponse1",
     "UpdateContentStandardsResponse2",
+    "UpdateContentStandardsResponse3",
+    "UpdateContentStandardsResponse4",
     "UpdateFrequency",
     "UpdateMediaBuyInputRequired",
     "UpdateMediaBuyRequest",
     "UpdateMediaBuyResponse",
     "UpdateMediaBuyResponse1",
     "UpdateMediaBuyResponse2",
+    "UpdateMediaBuyResponse3",
+    "UpdateMediaBuyResponse4",
     "UpdateMediaBuySubmitted",
     "UpdateMediaBuyWorking",
     "UpdatePropertyListRequest",
     "UpdatePropertyListResponse",
+    "UpdateRightsRequest",
+    "UpdateRightsResponse",
+    "UpdateRightsResponse1",
+    "UpdateRightsResponse2",
     "UrlAsset",
     "UrlAssetRequirements",
     "UrlAssetType",
+    "UrlType",
     "UsageItem",
+    "Use",
     "User",
     "UserMatch",
+    "UserMatch2",
+    "UserMatch3",
+    "UserMatch4",
+    "UserMatch5",
     "ValidAction",
     "ValidateContentDeliveryRequest",
     "ValidateContentDeliveryResponse",
     "ValidateContentDeliveryResponse1",
     "ValidateContentDeliveryResponse2",
+    "ValidateContentDeliveryResponse3",
+    "ValidateContentDeliveryResponse4",
+    "ValidatePropertyDeliveryRequest",
+    "ValidatePropertyDeliveryResponse",
     "ValidationMode",
+    "ValidationResult",
+    "ValueType",
+    "Variable",
     "VariableType",
     "Variant",
+    "Variant4",
     "VastAsset",
     "VastAsset1",
     "VastAsset2",
@@ -2339,17 +7700,286 @@
     "VastVersion",
     "VcpmPricingOption",
     "VehicleItem",
+    "Vendor",
+    "VendorErrorCodeRegistry",
+    "VendorPricing",
+    "VendorPricing1",
+    "VendorPricing2",
+    "VendorPricing3",
+    "VendorPricing4",
+    "VendorPricingOption",
+    "VendorPricingOption1",
+    "VendorPricingOption2",
+    "VendorPricingOption3",
+    "VendorPricingOption4",
+    "VendorPricingOption5",
+    "VendorPricingOption6",
+    "VendorPricingOption7",
+    "VendorPricingOption8",
+    "VendorPricingOption9",
+    "Vendors",
     "VenueBreakdownItem",
     "Verdict",
     "VerificationItem",
+    "VerificationItem1",
+    "VerificationItem10",
+    "VerificationItem100",
+    "VerificationItem101",
+    "VerificationItem102",
+    "VerificationItem103",
+    "VerificationItem104",
+    "VerificationItem105",
+    "VerificationItem106",
+    "VerificationItem107",
+    "VerificationItem108",
+    "VerificationItem11",
+    "VerificationItem110",
+    "VerificationItem111",
+    "VerificationItem112",
+    "VerificationItem113",
+    "VerificationItem115",
+    "VerificationItem116",
+    "VerificationItem117",
+    "VerificationItem118",
+    "VerificationItem119",
+    "VerificationItem12",
+    "VerificationItem120",
+    "VerificationItem121",
+    "VerificationItem122",
+    "VerificationItem123",
+    "VerificationItem125",
+    "VerificationItem126",
+    "VerificationItem127",
+    "VerificationItem128",
+    "VerificationItem129",
+    "VerificationItem13",
+    "VerificationItem130",
+    "VerificationItem131",
+    "VerificationItem132",
+    "VerificationItem133",
+    "VerificationItem134",
+    "VerificationItem135",
+    "VerificationItem136",
+    "VerificationItem138",
+    "VerificationItem139",
+    "VerificationItem140",
+    "VerificationItem141",
+    "VerificationItem142",
+    "VerificationItem143",
+    "VerificationItem144",
+    "VerificationItem145",
+    "VerificationItem146",
+    "VerificationItem147",
+    "VerificationItem148",
+    "VerificationItem149",
+    "VerificationItem15",
+    "VerificationItem150",
+    "VerificationItem152",
+    "VerificationItem153",
+    "VerificationItem154",
+    "VerificationItem155",
+    "VerificationItem156",
+    "VerificationItem157",
+    "VerificationItem158",
+    "VerificationItem159",
+    "VerificationItem16",
+    "VerificationItem160",
+    "VerificationItem161",
+    "VerificationItem162",
+    "VerificationItem163",
+    "VerificationItem164",
+    "VerificationItem165",
+    "VerificationItem166",
+    "VerificationItem167",
+    "VerificationItem168",
+    "VerificationItem169",
+    "VerificationItem17",
+    "VerificationItem170",
+    "VerificationItem171",
+    "VerificationItem172",
+    "VerificationItem173",
+    "VerificationItem174",
+    "VerificationItem175",
+    "VerificationItem176",
+    "VerificationItem177",
+    "VerificationItem178",
+    "VerificationItem18",
+    "VerificationItem180",
+    "VerificationItem181",
+    "VerificationItem182",
+    "VerificationItem183",
+    "VerificationItem184",
+    "VerificationItem185",
+    "VerificationItem186",
+    "VerificationItem187",
+    "VerificationItem188",
+    "VerificationItem189",
+    "VerificationItem19",
+    "VerificationItem190",
+    "VerificationItem191",
+    "VerificationItem192",
+    "VerificationItem195",
+    "VerificationItem196",
+    "VerificationItem197",
+    "VerificationItem198",
+    "VerificationItem199",
+    "VerificationItem2",
+    "VerificationItem20",
+    "VerificationItem200",
+    "VerificationItem201",
+    "VerificationItem202",
+    "VerificationItem203",
+    "VerificationItem204",
+    "VerificationItem205",
+    "VerificationItem206",
+    "VerificationItem207",
+    "VerificationItem209",
+    "VerificationItem21",
+    "VerificationItem210",
+    "VerificationItem211",
+    "VerificationItem212",
+    "VerificationItem213",
+    "VerificationItem214",
+    "VerificationItem215",
+    "VerificationItem216",
+    "VerificationItem217",
+    "VerificationItem219",
+    "VerificationItem22",
+    "VerificationItem220",
+    "VerificationItem221",
+    "VerificationItem222",
+    "VerificationItem223",
+    "VerificationItem224",
+    "VerificationItem225",
+    "VerificationItem226",
+    "VerificationItem227",
+    "VerificationItem228",
+    "VerificationItem229",
+    "VerificationItem23",
+    "VerificationItem230",
+    "VerificationItem231",
+    "VerificationItem232",
+    "VerificationItem233",
+    "VerificationItem234",
+    "VerificationItem235",
+    "VerificationItem236",
+    "VerificationItem237",
+    "VerificationItem238",
+    "VerificationItem239",
+    "VerificationItem24",
+    "VerificationItem240",
+    "VerificationItem241",
+    "VerificationItem242",
+    "VerificationItem243",
+    "VerificationItem244",
+    "VerificationItem245",
+    "VerificationItem247",
+    "VerificationItem248",
+    "VerificationItem249",
+    "VerificationItem25",
+    "VerificationItem250",
+    "VerificationItem26",
+    "VerificationItem27",
+    "VerificationItem28",
+    "VerificationItem29",
+    "VerificationItem3",
+    "VerificationItem30",
+    "VerificationItem31",
+    "VerificationItem32",
+    "VerificationItem33",
+    "VerificationItem34",
+    "VerificationItem35",
+    "VerificationItem36",
+    "VerificationItem37",
+    "VerificationItem38",
+    "VerificationItem39",
+    "VerificationItem4",
+    "VerificationItem40",
+    "VerificationItem41",
+    "VerificationItem43",
+    "VerificationItem44",
+    "VerificationItem45",
+    "VerificationItem46",
+    "VerificationItem48",
+    "VerificationItem49",
+    "VerificationItem5",
+    "VerificationItem50",
+    "VerificationItem51",
+    "VerificationItem52",
+    "VerificationItem53",
+    "VerificationItem54",
+    "VerificationItem55",
+    "VerificationItem56",
+    "VerificationItem58",
+    "VerificationItem59",
+    "VerificationItem6",
+    "VerificationItem60",
+    "VerificationItem61",
+    "VerificationItem62",
+    "VerificationItem63",
+    "VerificationItem64",
+    "VerificationItem65",
+    "VerificationItem66",
+    "VerificationItem67",
+    "VerificationItem68",
+    "VerificationItem69",
+    "VerificationItem7",
+    "VerificationItem70",
+    "VerificationItem72",
+    "VerificationItem73",
+    "VerificationItem74",
+    "VerificationItem75",
+    "VerificationItem76",
+    "VerificationItem77",
+    "VerificationItem78",
+    "VerificationItem79",
+    "VerificationItem8",
+    "VerificationItem80",
+    "VerificationItem82",
+    "VerificationItem83",
+    "VerificationItem84",
+    "VerificationItem85",
+    "VerificationItem86",
+    "VerificationItem87",
+    "VerificationItem88",
+    "VerificationItem89",
+    "VerificationItem9",
+    "VerificationItem90",
+    "VerificationItem91",
+    "VerificationItem92",
+    "VerificationItem93",
+    "VerificationItem94",
+    "VerificationItem96",
+    "VerificationItem97",
+    "VerificationItem98",
+    "VerificationItem99",
+    "VerificationMethod",
     "Video",
     "VideoAsset",
     "VideoAssetRequirements",
     "VideoBitDepth",
     "ViewThreshold",
     "ViewThreshold1",
+    "ViewThreshold3",
     "Viewability",
+    "Viewability10",
+    "Viewability11",
+    "Viewability12",
+    "Viewability2",
+    "Viewability4",
+    "Viewability5",
+    "Viewability6",
+    "Viewability7",
+    "Viewability8",
+    "Viewability9",
     "ViewabilityStandard",
+    "Views",
+    "Views1",
+    "Views2",
+    "Views3",
+    "Views4",
+    "Views5",
+    "Violation",
     "Visual",
     "Voice",
     "VoiceSynthesis",
@@ -2358,12 +7988,49 @@
     "WebhookAssetRequirements",
     "WebhookResponseType",
     "WebhookSecurityMethod",
+    "WeightRangeItem",
+    "Window",
+    "Window1",
+    "Window10",
+    "Window11",
+    "Window12",
+    "Window15",
+    "Window16",
+    "Window17",
+    "Window18",
+    "Window2",
+    "Window20",
+    "Window21",
+    "Window22",
+    "Window23",
+    "Window24",
+    "Window25",
+    "Window26",
+    "Window27",
+    "Window28",
+    "Window3",
+    "Window30",
+    "Window31",
+    "Window32",
+    "Window33",
+    "Window4",
+    "Window6",
+    "Window7",
+    "Window8",
+    "Window9",
+    "_AudienceFromBundledGetMediaBuyDeliveryRequest",
+    "_AudienceFromBundledSyncAudiencesRequest",
+    "_AudienceFromBundledSyncAudiencesResponse",
     "_AudienceFromGetMediaBuyDeliveryRequest",
     "_AudienceFromSyncAudiencesRequest",
     "_AudienceFromSyncAudiencesResponse",
+    "_DeliveryStatusFromBundledGetMediaBuyDeliveryResponse",
+    "_DeliveryStatusFromBundledGetMediaBuysResponse",
     "_DeliveryStatusFromGetMediaBuyDeliveryResponse",
     "_ErrorFromComplyTestControllerResponse",
     "_ErrorFromError",
+    "_PackageFromBundledCreateMediaBuyResponse",
+    "_PackageFromBundledGetMediaBuysResponse",
     "_PackageFromPackage",
 ]
 
@@ -2377,5 +8044,3 @@
 # Rebuild models that reference other models via forward refs
 # Note: only call model_rebuild() on actual classes, not Union type aliases
 CreativeManifest.model_rebuild()
-PreviewCreativeRequest1.model_rebuild()
-PreviewCreativeRequest2.model_rebuild()
diff --git a/src/adcp/types/aliases.py b/src/adcp/types/aliases.py
index e60ca23c4..e6223ab28 100644
--- a/src/adcp/types/aliases.py
+++ b/src/adcp/types/aliases.py
@@ -59,14 +59,8 @@
     # Calibrate content responses
     CalibrateContentResponse1,
     CalibrateContentResponse2,
-    # Compliance Test Controller
-    ComplyTestControllerRequest1,
-    ComplyTestControllerRequest2,
-    ComplyTestControllerRequest3,
-    ComplyTestControllerRequest4,
-    ComplyTestControllerRequest5,
-    ComplyTestControllerRequest6,
-    ComplyTestControllerRequest7,
+    # Compliance Test Controller response variants
+    # (Request is now a single class with a `scenario` enum field, no variants.)
     ComplyTestControllerResponse1,
     ComplyTestControllerResponse2,
     ComplyTestControllerResponse3,
@@ -121,10 +115,7 @@
     # Log event responses
     LogEventResponse1,
     LogEventResponse2,
-    # Preview creative requests
-    PreviewCreativeRequest1,
-    PreviewCreativeRequest2,
-    PreviewCreativeRequest3,
+    # (PreviewCreativeRequest is now a single class with a `request_type` enum field.)
     # Preview creative responses
     PreviewCreativeResponse1,
     PreviewCreativeResponse2,
@@ -140,10 +131,7 @@
     # Performance feedback responses
     ProvidePerformanceFeedbackResponse1,
     ProvidePerformanceFeedbackResponse2,
-    # Signal pricing option variants
-    SignalPricingOption5,
-    SignalPricingOption6,
-    SignalPricingOption7,
+    # (SignalPricingOption is now a single RootModel wrapping VendorPricingOption.)
     SiSendMessageRequest,
     # Sync accounts responses
     SyncAccountsResponse1,
@@ -478,29 +466,8 @@ def process_result(result: SyncCatalogResult) -> None:
 # ============================================================================
 # COMPLIANCE TEST CONTROLLER ALIASES
 # ============================================================================
-# ComplyTestControllerRequest is a 7-way union discriminated by scenario field.
-# ComplyTestControllerResponse is a 4-way union.
-
-ComplyListScenariosRequest = ComplyTestControllerRequest1
-"""List supported compliance scenarios."""
-
-ComplyForceCreativeStatusRequest = ComplyTestControllerRequest2
-"""Force a creative to a specific status."""
-
-ComplyForceAccountStatusRequest = ComplyTestControllerRequest3
-"""Force an account to a specific status."""
-
-ComplyForceMediaBuyStatusRequest = ComplyTestControllerRequest4
-"""Force a media buy to a specific status."""
-
-ComplyForceSessionStatusRequest = ComplyTestControllerRequest5
-"""Force an SI session to a terminal status."""
-
-ComplySimulateDeliveryRequest = ComplyTestControllerRequest6
-"""Simulate delivery data for a media buy."""
-
-ComplySimulateBudgetSpendRequest = ComplyTestControllerRequest7
-"""Simulate budget spend percentage."""
+# Request is now a single class with a `scenario` enum field — per-scenario
+# request aliases were removed. Response remains a 4-way discriminated union.
 
 ComplyListScenariosResponse = ComplyTestControllerResponse1
 """Success - lists supported scenarios."""
@@ -518,16 +485,8 @@ def process_result(result: SyncCatalogResult) -> None:
 # REQUEST TYPE ALIASES - Operation Variants
 # ============================================================================
 
-# Preview Creative Request Variants
-PreviewCreativeSingleRequest = PreviewCreativeRequest1
-"""Single preview request with creative_manifest and optional format_id - request_type='single'."""
-
-PreviewCreativeBatchRequest = PreviewCreativeRequest2
-"""Batch preview request with array of requests (1-50) - request_type='batch'."""
-
-PreviewCreativeVariantRequest = PreviewCreativeRequest3
-"""Variant preview request using variant_id - request_type='variant'."""
-
+# PreviewCreativeRequest is now a single class with a `request_type` enum field —
+# per-mode request aliases were removed. Dispatch on request.request_type instead.
 
 # Get Products Request Aliases (backward compat — now a single class)
 GetProductsRefineRequest = GetProductsRequest
@@ -1101,19 +1060,11 @@ def filter_products(props: PublisherProperties) -> None:
 """
 
 # ============================================================================
-# SIGNAL PRICING OPTION ALIASES - Pricing Model Discriminated Unions
+# SIGNAL PRICING OPTION ALIASES
 # ============================================================================
-# SignalPricingOption is a discriminated union with three pricing models.
-# Variants 5/6/7 combine the model-specific fields with pricing_option_id.
-
-CpmSignalPricingOption = SignalPricingOption5
-"""Signal pricing option with model='cpm' - fixed cost per thousand impressions."""
-
-PercentOfMediaSignalPricingOption = SignalPricingOption6
-"""Signal pricing option with model='percent_of_media' - percentage of media spend."""
-
-FlatFeeSignalPricingOption = SignalPricingOption7
-"""Signal pricing option with model='flat_fee' - fixed charge per reporting period."""
+# SignalPricingOption is now a RootModel wrapping VendorPricingOption; the
+# per-model variant aliases (CpmSignalPricingOption, etc.) were removed.
+# Dispatch on the wrapped VendorPricingOption.root.model field instead.
 
 # ============================================================================
 # FIELD ENUM ALIASES - Disambiguating FieldModel Name Collision
@@ -1281,10 +1232,6 @@ def get_pricing(options: list[PricingOption]) -> None:
     # Performance feedback responses
     "ProvidePerformanceFeedbackSuccessResponse",
     "ProvidePerformanceFeedbackErrorResponse",
-    # Preview creative requests
-    "PreviewCreativeSingleRequest",
-    "PreviewCreativeBatchRequest",
-    "PreviewCreativeVariantRequest",
     # Preview creative responses
     "PreviewCreativeSingleResponse",
     "PreviewCreativeBatchResponse",
@@ -1357,10 +1304,6 @@ def get_pricing(options: list[PricingOption]) -> None:
     "Destination",
     # Pricing option union
     "PricingOption",
-    # Signal pricing option variants
-    "CpmSignalPricingOption",
-    "FlatFeeSignalPricingOption",
-    "PercentOfMediaSignalPricingOption",
     # Sync audiences input type
     "SyncAudiencesAudience",
     "ConsentBasis",
@@ -1380,14 +1323,7 @@ def get_pricing(options: list[PricingOption]) -> None:
     "GetBrandIdentityErrorResponse",
     "GetRightsSuccessResponse",
     "GetRightsErrorResponse",
-    # Compliance Test Controller aliases
-    "ComplyListScenariosRequest",
-    "ComplyForceCreativeStatusRequest",
-    "ComplyForceAccountStatusRequest",
-    "ComplyForceMediaBuyStatusRequest",
-    "ComplyForceSessionStatusRequest",
-    "ComplySimulateDeliveryRequest",
-    "ComplySimulateBudgetSpendRequest",
+    # Compliance Test Controller response aliases
     "ComplyListScenariosResponse",
     "ComplyStateTransitionResponse",
     "ComplySimulationResponse",
diff --git a/src/adcp/types/generated_poc/a2ui/bound_value.py b/src/adcp/types/generated_poc/a2ui/bound_value.py
new file mode 100644
index 000000000..d151c08e4
--- /dev/null
+++ b/src/adcp/types/generated_poc/a2ui/bound_value.py
@@ -0,0 +1,69 @@
+# generated by datamodel-codegen:
+#   filename:  a2ui/bound_value.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Any, Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field, RootModel
+
+
+class A2UiBoundValue1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    literalString: Annotated[str, Field(description='Static string value')]
+
+
+class A2UiBoundValue2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    literalNumber: Annotated[float, Field(description='Static number value')]
+
+
+class A2UiBoundValue3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    literalBoolean: Annotated[bool, Field(description='Static boolean value')]
+
+
+class A2UiBoundValue4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    path: Annotated[
+        str,
+        Field(description="JSON pointer path to value in data model (e.g., '/products/0/title')"),
+    ]
+
+
+class A2UiBoundValue5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    literalString: str
+    path: str
+
+
+class A2UiBoundValue(
+    RootModel[
+        A2UiBoundValue1 | A2UiBoundValue2 | A2UiBoundValue3 | A2UiBoundValue4 | A2UiBoundValue5
+    ]
+):
+    root: Annotated[
+        A2UiBoundValue1 | A2UiBoundValue2 | A2UiBoundValue3 | A2UiBoundValue4 | A2UiBoundValue5,
+        Field(
+            description='A value that can be a literal or bound to a path in the data model',
+            title='A2UI Bound Value',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
diff --git a/src/adcp/types/generated_poc/a2ui/si_catalog.py b/src/adcp/types/generated_poc/a2ui/si_catalog.py
new file mode 100644
index 000000000..ba5c56ab3
--- /dev/null
+++ b/src/adcp/types/generated_poc/a2ui/si_catalog.py
@@ -0,0 +1,189 @@
+# generated by datamodel-codegen:
+#   filename:  a2ui/si_catalog.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, Field
+
+from . import bound_value
+
+
+class Component(Enum):
+    Text = 'Text'
+    Button = 'Button'
+    Link = 'Link'
+    Image = 'Image'
+    Card = 'Card'
+    ProductCard = 'ProductCard'
+    List = 'List'
+    Row = 'Row'
+    Column = 'Column'
+    IntegrationAction = 'IntegrationAction'
+    AppHandoff = 'AppHandoff'
+
+
+class SiComponentCatalog(AdCPBaseModel):
+    catalogId: Annotated[
+        Literal['si-standard'], Field(description='SI standard component catalog')
+    ] = 'si-standard'
+    components: Annotated[
+        list[Component] | None, Field(description='Available component types')
+    ] = None
+
+
+class Variant(Enum):
+    body = 'body'
+    heading = 'heading'
+    caption = 'caption'
+    label = 'label'
+
+
+class Text(AdCPBaseModel):
+    text: Annotated[bound_value.A2UiBoundValue, Field(description='Text content to display')]
+    variant: Variant | None = Variant.body
+
+
+class Action(AdCPBaseModel):
+    name: Annotated[str, Field(description='Action identifier')]
+    context: Annotated[
+        dict[str, bound_value.A2UiBoundValue] | None,
+        Field(description='Context data to include with action'),
+    ] = None
+
+
+class Variant4(Enum):
+    primary = 'primary'
+    secondary = 'secondary'
+    text = 'text'
+
+
+class Button(AdCPBaseModel):
+    label: Annotated[bound_value.A2UiBoundValue, Field(description='Button label text')]
+    action: Annotated[Action, Field(description='Action to trigger on click')]
+    variant: Variant4 | None = Variant4.primary
+    disabled: bound_value.A2UiBoundValue | None = None
+
+
+class Link(AdCPBaseModel):
+    label: Annotated[bound_value.A2UiBoundValue, Field(description='Link text')]
+    url: Annotated[bound_value.A2UiBoundValue, Field(description='URL to navigate to')]
+    external: Annotated[bool | None, Field(description='Opens in new tab if true')] = True
+
+
+class Image(AdCPBaseModel):
+    src: Annotated[bound_value.A2UiBoundValue, Field(description='Image source URL')]
+    alt: Annotated[bound_value.A2UiBoundValue, Field(description='Alt text for accessibility')]
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+
+
+class Action7(AdCPBaseModel):
+    name: str
+    context: dict[str, bound_value.A2UiBoundValue] | None = None
+
+
+class Card(AdCPBaseModel):
+    title: Annotated[bound_value.A2UiBoundValue, Field(description='Card title')]
+    subtitle: Annotated[bound_value.A2UiBoundValue | None, Field(description='Card subtitle')] = (
+        None
+    )
+    image: Annotated[bound_value.A2UiBoundValue | None, Field(description='Card image URL')] = None
+    badge: Annotated[
+        bound_value.A2UiBoundValue | None, Field(description="Badge text (e.g., 'New', 'Sale')")
+    ] = None
+    action: Annotated[Action7 | None, Field(description='Action to trigger on card click')] = None
+    children: Annotated[list[str] | None, Field(description='Child component IDs')] = None
+
+
+class ProductCard(AdCPBaseModel):
+    title: Annotated[bound_value.A2UiBoundValue, Field(description='Product name')]
+    price: Annotated[bound_value.A2UiBoundValue, Field(description='Price display string')]
+    image: Annotated[bound_value.A2UiBoundValue | None, Field(description='Product image URL')] = (
+        None
+    )
+    description: Annotated[
+        bound_value.A2UiBoundValue | None, Field(description='Product description')
+    ] = None
+    badge: Annotated[
+        bound_value.A2UiBoundValue | None, Field(description="Badge text (e.g., 'Best Seller')")
+    ] = None
+    ctaLabel: Annotated[
+        bound_value.A2UiBoundValue | None, Field(description='CTA button label')
+    ] = None
+    action: Action7 | None = None
+
+
+class Template(AdCPBaseModel):
+    componentId: Annotated[str, Field(description='ID of component to use as template')]
+
+
+class Layout(Enum):
+    vertical = 'vertical'
+    horizontal = 'horizontal'
+    grid = 'grid'
+
+
+class List(AdCPBaseModel):
+    items: Annotated[bound_value.A2UiBoundValue, Field(description='Path to array in data model')]
+    template: Annotated[Template, Field(description='Template for list items')]
+    emptyMessage: Annotated[
+        bound_value.A2UiBoundValue | None, Field(description='Message to show when list is empty')
+    ] = None
+    layout: Layout | None = Layout.vertical
+
+
+class Align(Enum):
+    start = 'start'
+    center = 'center'
+    end = 'end'
+    stretch = 'stretch'
+
+
+class Justify(Enum):
+    start = 'start'
+    center = 'center'
+    end = 'end'
+    between = 'between'
+    around = 'around'
+
+
+class Row(AdCPBaseModel):
+    children: Annotated[list[str], Field(description='Child component IDs')]
+    gap: Annotated[str | None, Field(description='Gap between children')] = '8px'
+    align: Align | None = Align.center
+    justify: Justify | None = Justify.start
+
+
+class Column(AdCPBaseModel):
+    children: Annotated[list[str], Field(description='Child component IDs')]
+    gap: Annotated[str | None, Field(description='Gap between children')] = '8px'
+    align: Align | None = Align.stretch
+
+
+class Type(Enum):
+    mcp = 'mcp'
+    a2a = 'a2a'
+
+
+class IntegrationAction(AdCPBaseModel):
+    type: Annotated[Type, Field(description='Integration type')]
+    label: Annotated[bound_value.A2UiBoundValue, Field(description='Button label')]
+    url: Annotated[
+        bound_value.A2UiBoundValue | None, Field(description='Integration endpoint URL')
+    ] = None
+    highlighted: Annotated[bool | None, Field(description='Visually emphasize this action')] = False
+
+
+class Apps(AdCPBaseModel):
+    appId: str | None = None
+    deepLink: str | None = None
+    url: AnyUrl | None = None
+
+
+class AppHandoff(AdCPBaseModel):
+    apps: Annotated[dict[str, Apps], Field(description='Platform-specific app configurations')]
diff --git a/src/adcp/types/generated_poc/a2ui/surface.py b/src/adcp/types/generated_poc/a2ui/surface.py
index 77685356f..2c2d64f2c 100644
--- a/src/adcp/types/generated_poc/a2ui/surface.py
+++ b/src/adcp/types/generated_poc/a2ui/surface.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  a2ui/surface.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,6 +16,7 @@ class A2UiSurface(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    surfaceId: Annotated[str, Field(description='Unique identifier for this surface')]
     catalogId: Annotated[
         str | None, Field(description='Component catalog to use for rendering')
     ] = 'standard'
@@ -23,11 +24,10 @@ class A2UiSurface(AdCPBaseModel):
         list[component.A2UiComponent],
         Field(description='Flat list of components (adjacency list structure)'),
     ]
-    dataModel: Annotated[
-        dict[str, Any] | None, Field(description='Application data that components can bind to')
-    ] = None
     rootId: Annotated[
         str | None,
         Field(description='ID of the root component (if not specified, first component is root)'),
     ] = None
-    surfaceId: Annotated[str, Field(description='Unique identifier for this surface')]
+    dataModel: Annotated[
+        dict[str, Any] | None, Field(description='Application data that components can bind to')
+    ] = None
diff --git a/src/adcp/types/generated_poc/a2ui/user_action.py b/src/adcp/types/generated_poc/a2ui/user_action.py
new file mode 100644
index 000000000..4c950a77e
--- /dev/null
+++ b/src/adcp/types/generated_poc/a2ui/user_action.py
@@ -0,0 +1,32 @@
+# generated by datamodel-codegen:
+#   filename:  a2ui/user_action.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class Action(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str, Field(description="Action identifier (e.g., 'view_product', 'add_to_cart')")
+    ]
+    context: Annotated[
+        dict[str, Any] | None, Field(description='Context data resolved from data model bindings')
+    ] = None
+
+
+class A2UiUserAction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    surfaceId: Annotated[str, Field(description='ID of the surface where the action occurred')]
+    componentId: Annotated[str, Field(description='ID of the component that triggered the action')]
+    action: Annotated[Action, Field(description='The action that was triggered')]
+    timestamp: Annotated[AwareDatetime | None, Field(description='When the action occurred')] = None
diff --git a/src/adcp/types/generated_poc/account/get_account_financials_request.py b/src/adcp/types/generated_poc/account/get_account_financials_request.py
index 613ce009b..8f6504430 100644
--- a/src/adcp/types/generated_poc/account/get_account_financials_request.py
+++ b/src/adcp/types/generated_poc/account/get_account_financials_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/get_account_financials_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,15 +19,23 @@ class GetAccountFinancialsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     account: Annotated[
         account_ref.AccountReference,
         Field(description='Account to query financials for. Must be an operator-billed account.'),
     ]
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     period: Annotated[
         date_range.DateRange | None,
         Field(
             description='Date range for the spend summary. Defaults to the current billing cycle if omitted.'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/account/get_account_financials_response.py b/src/adcp/types/generated_poc/account/get_account_financials_response.py
index 389652f60..342839bd5 100644
--- a/src/adcp/types/generated_poc/account/get_account_financials_response.py
+++ b/src/adcp/types/generated_poc/account/get_account_financials_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/get_account_financials_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,48 +17,35 @@
 from ..core import ext as ext_1
 
 
-class LastTopUp(AdCPBaseModel):
-    amount: Annotated[float, Field(description='Top-up amount', ge=0.0)]
-    date: Annotated[date_aliased, Field(description='Date of top-up')]
-
-
-class Balance(AdCPBaseModel):
-    available: Annotated[float, Field(description='Remaining prepaid balance', ge=0.0)]
-    last_top_up: Annotated[LastTopUp | None, Field(description='Most recent balance top-up')] = None
+class Spend(AdCPBaseModel):
+    total_spend: Annotated[
+        float, Field(description='Total spend in the period, in currency', ge=0.0)
+    ]
+    media_buy_count: Annotated[
+        int | None, Field(description='Number of active media buys in the period', ge=0)
+    ] = None
 
 
 class Credit(AdCPBaseModel):
+    credit_limit: Annotated[float, Field(description='Maximum outstanding balance allowed', ge=0.0)]
     available_credit: Annotated[
         float,
         Field(description='Remaining credit available (credit_limit minus outstanding balance)'),
     ]
-    credit_limit: Annotated[float, Field(description='Maximum outstanding balance allowed', ge=0.0)]
     utilization_percent: Annotated[
         float | None,
         Field(description='Credit utilization as a percentage (0-100)', ge=0.0, le=100.0),
     ] = None
 
 
-class Status(Enum):
-    draft = 'draft'
-    issued = 'issued'
-    paid = 'paid'
-    past_due = 'past_due'
-    void = 'void'
+class LastTopUp(AdCPBaseModel):
+    amount: Annotated[float, Field(description='Top-up amount', ge=0.0)]
+    date: Annotated[date_aliased, Field(description='Date of top-up')]
 
 
-class Invoice(AdCPBaseModel):
-    amount: Annotated[float, Field(description='Invoice total in currency', ge=0.0)]
-    due_date: Annotated[date_aliased | None, Field(description='Payment due date')] = None
-    invoice_id: Annotated[str, Field(description='Seller-assigned invoice identifier')]
-    paid_date: Annotated[
-        date_aliased | None,
-        Field(description="Date payment was received. Present when status is 'paid'."),
-    ] = None
-    period: Annotated[
-        date_range.DateRange | None, Field(description='Billing period covered by this invoice')
-    ] = None
-    status: Annotated[Status, Field(description='Invoice status')]
+class Balance(AdCPBaseModel):
+    available: Annotated[float, Field(description='Remaining prepaid balance', ge=0.0)]
+    last_top_up: Annotated[LastTopUp | None, Field(description='Most recent balance top-up')] = None
 
 
 class PaymentStatus(Enum):
@@ -76,21 +63,34 @@ class PaymentTerms(Enum):
     prepay = 'prepay'
 
 
-class Spend(AdCPBaseModel):
-    media_buy_count: Annotated[
-        int | None, Field(description='Number of active media buys in the period', ge=0)
+class Status(Enum):
+    draft = 'draft'
+    issued = 'issued'
+    paid = 'paid'
+    past_due = 'past_due'
+    void = 'void'
+
+
+class Invoice(AdCPBaseModel):
+    invoice_id: Annotated[str, Field(description='Seller-assigned invoice identifier')]
+    period: Annotated[
+        date_range.DateRange | None, Field(description='Billing period covered by this invoice')
+    ] = None
+    amount: Annotated[float, Field(description='Invoice total in currency', ge=0.0)]
+    status: Annotated[Status, Field(description='Invoice status')]
+    due_date: Annotated[date_aliased | None, Field(description='Payment due date')] = None
+    paid_date: Annotated[
+        date_aliased | None,
+        Field(description="Date payment was received. Present when status is 'paid'."),
     ] = None
-    total_spend: Annotated[
-        float, Field(description='Total spend in the period, in currency', ge=0.0)
-    ]
 
 
 class GetAccountFinancialsResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[list[error.Error], Field(description='Operation-level errors', min_length=1)]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -102,16 +102,6 @@ class GetAccountFinancialsResponse1(AdCPBaseModel):
         account_ref.AccountReference,
         Field(description='Account reference, echoed from the request'),
     ]
-    balance: Annotated[
-        Balance | None, Field(description='Prepay balance. Present for prepay accounts.')
-    ] = None
-    context: context_1.ContextObject | None = None
-    credit: Annotated[
-        Credit | None,
-        Field(
-            description='Credit status. Present for credit-based accounts (payment_terms like net_30).'
-        ),
-    ] = None
     currency: Annotated[
         str,
         Field(
@@ -119,33 +109,43 @@ class GetAccountFinancialsResponse1(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    invoices: Annotated[
-        list[Invoice] | None,
-        Field(description='Recent invoices. Sellers may limit the number returned.'),
-    ] = None
-    payment_status: Annotated[
-        PaymentStatus | None,
-        Field(
-            description='Overall payment status. current: all obligations met. past_due: one or more invoices overdue. suspended: account suspended due to payment issues.'
-        ),
-    ] = None
-    payment_terms: Annotated[
-        PaymentTerms | None, Field(description='Payment terms in effect for this account')
-    ] = None
     period: Annotated[
         date_range.DateRange,
         Field(
             description='The actual period covered by spend data. May differ from the requested period if the seller adjusts to billing cycle boundaries.'
         ),
     ]
-    spend: Annotated[Spend | None, Field(description='Spend summary for the period')] = None
     timezone: Annotated[
         str,
         Field(
             description="IANA timezone of the seller's billing day boundaries (e.g., 'America/New_York'). All dates in this response — period, invoice periods, due dates — are calendar dates in this timezone. Buyers in a different timezone should expect spend boundaries to differ from their own calendar day."
         ),
     ]
+    spend: Annotated[Spend | None, Field(description='Spend summary for the period')] = None
+    credit: Annotated[
+        Credit | None,
+        Field(
+            description='Credit status. Present for credit-based accounts (payment_terms like net_30).'
+        ),
+    ] = None
+    balance: Annotated[
+        Balance | None, Field(description='Prepay balance. Present for prepay accounts.')
+    ] = None
+    payment_status: Annotated[
+        PaymentStatus | None,
+        Field(
+            description='Overall payment status. current: all obligations met. past_due: one or more invoices overdue. suspended: account suspended due to payment issues.'
+        ),
+    ] = None
+    payment_terms: Annotated[
+        PaymentTerms | None, Field(description='Payment terms in effect for this account')
+    ] = None
+    invoices: Annotated[
+        list[Invoice] | None,
+        Field(description='Recent invoices. Sellers may limit the number returned.'),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 GetAccountFinancialsResponse = GetAccountFinancialsResponse1 | GetAccountFinancialsResponse2
diff --git a/src/adcp/types/generated_poc/account/list_accounts_request.py b/src/adcp/types/generated_poc/account/list_accounts_request.py
index c67d2740d..566611b42 100644
--- a/src/adcp/types/generated_poc/account/list_accounts_request.py
+++ b/src/adcp/types/generated_poc/account/list_accounts_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/list_accounts_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -28,16 +28,24 @@ class ListAccountsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    pagination: pagination_request.PaginationRequest | None = None
-    sandbox: Annotated[
-        bool | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Filter by sandbox status. true returns only sandbox accounts, false returns only production accounts. Omit to return all accounts. Primarily used with explicit accounts (require_operator_auth: true) where sandbox accounts are pre-existing test accounts on the platform.'
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
     status: Annotated[
         Status | None,
         Field(description='Filter accounts by status. Omit to return accounts in all statuses.'),
     ] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='Filter by sandbox status. true returns only sandbox accounts, false returns only production accounts. Omit to return all accounts. Primarily used with explicit accounts (require_operator_auth: true) where sandbox accounts are pre-existing test accounts on the platform.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/account/list_accounts_response.py b/src/adcp/types/generated_poc/account/list_accounts_response.py
index afea26671..f42b5d03e 100644
--- a/src/adcp/types/generated_poc/account/list_accounts_response.py
+++ b/src/adcp/types/generated_poc/account/list_accounts_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/list_accounts_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,9 +24,9 @@ class ListAccountsResponse(AdCPBaseModel):
         list[account.Account],
         Field(description='Array of accounts accessible to the authenticated agent'),
     ]
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error] | None, Field(description='Task-specific errors and warnings')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     pagination: pagination_response.PaginationResponse | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/account/report_usage_request.py b/src/adcp/types/generated_poc/account/report_usage_request.py
index e8ee75f58..881c5a782 100644
--- a/src/adcp/types/generated_poc/account/report_usage_request.py
+++ b/src/adcp/types/generated_poc/account/report_usage_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/report_usage_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -22,33 +22,34 @@ class UsageItem(AdCPBaseModel):
     account: Annotated[
         account_ref.AccountReference, Field(description='Account for this usage record.')
     ]
-    currency: Annotated[str, Field(description='ISO 4217 currency code.', pattern='^[A-Z]{3}$')]
-    impressions: Annotated[
-        int | None, Field(description='Impressions delivered using this vendor service.', ge=0)
-    ] = None
     media_buy_id: Annotated[
         str | None,
         Field(
             description='Seller-assigned media buy identifier. Links this usage record to a specific media buy.'
         ),
     ] = None
-    media_spend: Annotated[
-        float | None,
+    vendor_cost: Annotated[
+        float,
         Field(
-            description='Media spend in currency for the period. Required when a percent_of_media pricing model was used, so the vendor can verify the applied rate.',
+            description='Amount owed to the vendor for this record, denominated in currency.',
             ge=0.0,
         ),
-    ] = None
+    ]
+    currency: Annotated[str, Field(description='ISO 4217 currency code.', pattern='^[A-Z]{3}$')]
     pricing_option_id: Annotated[
         str | None,
         Field(
             description="Pricing option identifier from the vendor's discovery response (e.g., get_signals, list_content_standards). The vendor uses this to verify the correct rate was applied."
         ),
     ] = None
-    rights_id: Annotated[
-        str | None,
+    impressions: Annotated[
+        int | None, Field(description='Impressions delivered using this vendor service.', ge=0)
+    ] = None
+    media_spend: Annotated[
+        float | None,
         Field(
-            description='Rights grant identifier from acquire_rights. Required for brand/rights agents. Links usage records to specific rights grants for cap tracking, billing verification, and overage calculation.'
+            description='Media spend in currency for the period. Required when a percent_of_media pricing model was used, so the vendor can verify the applied rate.',
+            ge=0.0,
         ),
     ] = None
     signal_agent_segment_id: Annotated[
@@ -61,27 +62,44 @@ class UsageItem(AdCPBaseModel):
             description='Content standards configuration identifier. Required for governance agents.'
         ),
     ] = None
-    vendor_cost: Annotated[
-        float,
+    rights_id: Annotated[
+        str | None,
         Field(
-            description='Amount owed to the vendor for this record, denominated in currency.',
-            ge=0.0,
+            description='Rights grant identifier from acquire_rights. Required for brand/rights agents. Links usage records to specific rights grants for cap tracking, billing verification, and overage calculation.'
         ),
-    ]
+    ] = None
+    creative_id: Annotated[
+        str | None,
+        Field(
+            description='Creative identifier from build_creative or list_creatives. Required for creative agents. Links usage records to specific creatives for billing verification.'
+        ),
+    ] = None
+    property_list_id: Annotated[
+        str | None,
+        Field(
+            description='Property list identifier from list_property_lists. Required for property list agents. Links usage records to specific property lists for billing verification.'
+        ),
+    ] = None
 
 
 class ReportUsageRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for this request. If a request with the same key has already been accepted, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request. Prevents duplicate billing on retries.'
         ),
-    ] = None
+    ]
     reporting_period: Annotated[
         datetime_range.DatetimeRange,
         Field(
@@ -95,3 +113,5 @@ class ReportUsageRequest(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/account/report_usage_response.py b/src/adcp/types/generated_poc/account/report_usage_response.py
index 501111433..0db89194f 100644
--- a/src/adcp/types/generated_poc/account/report_usage_response.py
+++ b/src/adcp/types/generated_poc/account/report_usage_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/report_usage_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -21,15 +21,15 @@ class ReportUsageResponse(AdCPBaseModel):
     accepted: Annotated[
         int, Field(description='Number of usage records successfully stored.', ge=0)
     ]
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error] | None,
         Field(
             description="Validation errors for individual records. The field property identifies which record failed (e.g., 'usage[1].pricing_option_id')."
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, the account is a sandbox account and no billing occurred.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/account/sync_accounts_request.py b/src/adcp/types/generated_poc/account/sync_accounts_request.py
index 708a1aa06..85c0ea510 100644
--- a/src/adcp/types/generated_poc/account/sync_accounts_request.py
+++ b/src/adcp/types/generated_poc/account/sync_accounts_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/sync_accounts_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,6 +14,7 @@
 from ..core import context as context_1
 from ..core import ext as ext_1
 from ..core import push_notification_config as push_notification_config_1
+from ..enums import cloud_storage_protocol
 
 
 class Billing(Enum):
@@ -35,18 +36,6 @@ class Account(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    billing: Annotated[
-        Billing,
-        Field(
-            description='Who should be invoiced. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing across brands. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The seller must either accept this billing model or reject the request.'
-        ),
-    ]
-    billing_entity: Annotated[
-        business_entity.BusinessEntity | None,
-        Field(
-            description='Business entity details for the party responsible for payment. The agent provides this so the seller has the legal name, tax IDs, address, and bank details needed for formal B2B invoicing.'
-        ),
-    ] = None
     brand: Annotated[
         brand_ref.BrandReference,
         Field(
@@ -60,6 +49,18 @@ class Account(AdCPBaseModel):
             pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
         ),
     ]
+    billing: Annotated[
+        Billing,
+        Field(
+            description='Who should be invoiced. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing across brands. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The seller must either accept this billing model or reject the request.'
+        ),
+    ]
+    billing_entity: Annotated[
+        business_entity.BusinessEntity | None,
+        Field(
+            description='Business entity details for the party responsible for payment. The agent provides this so the seller has the legal name, tax IDs, address, and bank details needed for formal B2B invoicing.'
+        ),
+    ] = None
     payment_terms: Annotated[
         PaymentTerms | None,
         Field(
@@ -72,16 +73,38 @@ class Account(AdCPBaseModel):
             description='When true, provision this as a sandbox account with no real platform calls or billing. Only applicable to implicit accounts (require_operator_auth: false). For explicit accounts, sandbox accounts are pre-existing test accounts discovered via list_accounts.'
         ),
     ] = None
+    preferred_reporting_protocol: Annotated[
+        cloud_storage_protocol.CloudStorageProtocol | None,
+        Field(
+            description="Buyer's preferred cloud storage protocol for offline reporting delivery. The seller provisions the account's reporting_bucket using this protocol if supported. When omitted, the seller chooses from its supported offline_delivery_protocols. Only meaningful when the seller's reporting_delivery_methods includes 'offline'."
+        ),
+    ] = None
 
 
 class SyncAccountsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. Natural per-account upsert keys (brand, operator) handle resource-level dedup, but the envelope triggers onboarding webhooks, billing setup, and audit events — this key prevents those side effects from firing twice on retry. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
     accounts: Annotated[
         list[Account], Field(description='Advertiser accounts to sync', max_length=1000)
     ]
-    context: context_1.ContextObject | None = None
     delete_missing: Annotated[
         bool | None,
         Field(
@@ -94,10 +117,11 @@ class SyncAccountsRequest(AdCPBaseModel):
             description='When true, preview what would change without applying. Returns what would be created/updated/deactivated.'
         ),
     ] = False
-    ext: ext_1.ExtensionObject | None = None
     push_notification_config: Annotated[
         push_notification_config_1.PushNotificationConfig | None,
         Field(
             description='Webhook for async notifications when account status changes (e.g., pending_approval transitions to active).'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/account/sync_accounts_response.py b/src/adcp/types/generated_poc/account/sync_accounts_response.py
index c46f5e50d..ecf831151 100644
--- a/src/adcp/types/generated_poc/account/sync_accounts_response.py
+++ b/src/adcp/types/generated_poc/account/sync_accounts_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  account/sync_accounts_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,13 +16,6 @@
 from ..core import ext as ext_1
 
 
-class AccountScope(Enum):
-    operator = 'operator'
-    brand = 'brand'
-    operator_brand = 'operator_brand'
-    agent = 'agent'
-
-
 class Action(Enum):
     created = 'created'
     updated = 'updated'
@@ -30,56 +23,62 @@ class Action(Enum):
     failed = 'failed'
 
 
+class Status(Enum):
+    active = 'active'
+    pending_approval = 'pending_approval'
+    rejected = 'rejected'
+    payment_required = 'payment_required'
+    suspended = 'suspended'
+    closed = 'closed'
+
+
 class Billing(Enum):
     operator = 'operator'
     agent = 'agent'
     advertiser = 'advertiser'
 
 
-class CreditLimit(AdCPBaseModel):
-    amount: Annotated[float, Field(ge=0.0)]
-    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
-
-
-class PaymentTerms(Enum):
-    net_15 = 'net_15'
-    net_30 = 'net_30'
-    net_45 = 'net_45'
-    net_60 = 'net_60'
-    net_90 = 'net_90'
-    prepay = 'prepay'
+class AccountScope(Enum):
+    operator = 'operator'
+    brand = 'brand'
+    operator_brand = 'operator_brand'
+    agent = 'agent'
 
 
 class Setup(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    expires_at: Annotated[
-        AwareDatetime | None, Field(description='When this setup link expires')
-    ] = None
-    message: Annotated[str, Field(description="Human-readable description of what's needed")]
     url: Annotated[
         AnyUrl | None,
         Field(
             description='URL where the human can complete the required action (credit application, legal agreement, add funds)'
         ),
     ] = None
+    message: Annotated[str, Field(description="Human-readable description of what's needed")]
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='When this setup link expires')
+    ] = None
 
 
-class Status(Enum):
-    active = 'active'
-    pending_approval = 'pending_approval'
-    rejected = 'rejected'
-    payment_required = 'payment_required'
-    suspended = 'suspended'
-    closed = 'closed'
+class PaymentTerms(Enum):
+    net_15 = 'net_15'
+    net_30 = 'net_30'
+    net_45 = 'net_45'
+    net_60 = 'net_60'
+    net_90 = 'net_90'
+    prepay = 'prepay'
+
+
+class CreditLimit(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
 
 
 class SyncAccountsResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(
@@ -87,6 +86,7 @@ class SyncAccountsResponse2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -100,11 +100,12 @@ class Account(AdCPBaseModel):
             description='Seller-assigned account identifier. Use this in subsequent create_media_buy and other account-scoped operations.'
         ),
     ] = None
-    account_scope: Annotated[
-        AccountScope | None,
-        Field(
-            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to this operator+brand pair. agent: the agent's default account."
-        ),
+    brand: Annotated[
+        brand_ref.BrandReference, Field(description='Brand reference, echoed from the request')
+    ]
+    operator: Annotated[str, Field(description='Operator domain, echoed from request')]
+    name: Annotated[
+        str | None, Field(description='Human-readable account name assigned by the seller')
     ] = None
     action: Annotated[
         Action,
@@ -112,6 +113,12 @@ class Account(AdCPBaseModel):
             description='Action taken for this account. created: new account provisioned. updated: existing account modified. unchanged: no changes needed. failed: could not process (see errors).'
         ),
     ]
+    status: Annotated[
+        Status,
+        Field(
+            description='Account status. active: ready for use. pending_approval: seller reviewing (credit, legal). rejected: seller declined the account request. payment_required: credit limit reached or funds depleted. suspended: was active, now paused. closed: was active, now terminated.'
+        ),
+    ]
     billing: Annotated[
         Billing | None,
         Field(description='Who is invoiced on this account. Matches the requested billing model.'),
@@ -122,29 +129,10 @@ class Account(AdCPBaseModel):
             description='Business entity details for the party responsible for payment, echoed from the request. Sellers MAY add fields the agent omitted (e.g., filling in registration_number from a credit check), but MUST NOT return data from a different entity. Bank details are omitted (write-only).'
         ),
     ] = None
-    brand: Annotated[
-        brand_ref.BrandReference, Field(description='Brand reference, echoed from the request')
-    ]
-    credit_limit: CreditLimit | None = None
-    errors: Annotated[
-        list[error.Error] | None,
-        Field(description="Per-account errors (only present when action is 'failed')"),
-    ] = None
-    name: Annotated[
-        str | None, Field(description='Human-readable account name assigned by the seller')
-    ] = None
-    operator: Annotated[str, Field(description='Operator domain, echoed from request')]
-    payment_terms: Annotated[
-        PaymentTerms | None,
-        Field(
-            description='Payment terms agreed for this account. When the account is active, these are the binding terms for all invoices on this account.'
-        ),
-    ] = None
-    rate_card: Annotated[str | None, Field(description='Rate card applied to this account')] = None
-    sandbox: Annotated[
-        bool | None,
+    account_scope: Annotated[
+        AccountScope | None,
         Field(
-            description='Whether this is a sandbox account, echoed from the request. Only present for implicit accounts.'
+            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to this operator+brand pair. agent: the agent's default account."
         ),
     ] = None
     setup: Annotated[
@@ -153,26 +141,38 @@ class Account(AdCPBaseModel):
             description='Setup information for pending accounts. Provides the agent (or human) with next steps to complete account activation.'
         ),
     ] = None
-    status: Annotated[
-        Status,
+    rate_card: Annotated[str | None, Field(description='Rate card applied to this account')] = None
+    payment_terms: Annotated[
+        PaymentTerms | None,
         Field(
-            description='Account status. active: ready for use. pending_approval: seller reviewing (credit, legal). rejected: seller declined the account request. payment_required: credit limit reached or funds depleted. suspended: was active, now paused. closed: was active, now terminated.'
+            description='Payment terms agreed for this account. When the account is active, these are the binding terms for all invoices on this account.'
         ),
-    ]
+    ] = None
+    credit_limit: CreditLimit | None = None
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(description="Per-account errors (only present when action is 'failed')"),
+    ] = None
     warnings: Annotated[
         list[str] | None, Field(description='Non-fatal warnings about this account')
     ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='Whether this is a sandbox account, echoed from the request. Only present for implicit accounts.'
+        ),
+    ] = None
 
 
 class SyncAccountsResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    accounts: Annotated[list[Account], Field(description='Results for each account processed')]
-    context: context_1.ContextObject | None = None
     dry_run: Annotated[
         bool | None, Field(description='Whether this was a dry run (no actual changes made)')
     ] = None
+    accounts: Annotated[list[Account], Field(description='Results for each account processed')]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/account/sync_governance_request.py b/src/adcp/types/generated_poc/account/sync_governance_request.py
new file mode 100644
index 000000000..a715f033c
--- /dev/null
+++ b/src/adcp/types/generated_poc/account/sync_governance_request.py
@@ -0,0 +1,100 @@
+# generated by datamodel-codegen:
+#   filename:  account/sync_governance_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+from ..core import account_ref
+from ..core import context as context_1
+from ..core import ext as ext_1
+from ..enums import auth_scheme
+
+
+class Authentication(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    schemes: Annotated[list[auth_scheme.AuthenticationScheme], Field(max_length=1, min_length=1)]
+    credentials: Annotated[
+        str, Field(description='Authentication credential (e.g., Bearer token).', min_length=32)
+    ]
+
+
+class Category(RootModel[str]):
+    root: Annotated[str, Field(max_length=64, pattern='^[a-z][a-z0-9_]*$')]
+
+
+class GovernanceAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL. Must use HTTPS.')]
+    authentication: Annotated[
+        Authentication,
+        Field(description='Authentication the seller presents when calling this governance agent.'),
+    ]
+    categories: Annotated[
+        list[Category] | None,
+        Field(
+            description="Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+            max_length=20,
+        ),
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account: Annotated[
+        account_ref.AccountReference,
+        Field(
+            description='Account to sync governance agents for. Use account_id for explicit accounts or brand + operator for implicit accounts.'
+        ),
+    ]
+    governance_agents: Annotated[
+        list[GovernanceAgent],
+        Field(
+            description='Governance agent endpoints for this account. The seller calls these agents via check_governance during media buy lifecycle events.',
+            max_length=10,
+            min_length=1,
+        ),
+    ]
+
+
+class SyncGovernanceRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `account` gives resource-level dedup, but governance changes emit audit events and can trigger reapproval flows — this key prevents those side effects from firing twice on retry. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    accounts: Annotated[
+        list[Account],
+        Field(
+            description='Per-account governance agent configuration. Each entry pairs an account reference with the governance agents for that account.',
+            max_length=100,
+            min_length=1,
+        ),
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/account/sync_governance_response.py b/src/adcp/types/generated_poc/account/sync_governance_response.py
new file mode 100644
index 000000000..b6c7a8581
--- /dev/null
+++ b/src/adcp/types/generated_poc/account/sync_governance_response.py
@@ -0,0 +1,88 @@
+# generated by datamodel-codegen:
+#   filename:  account/sync_governance_response.json
+#   timestamp: 2026-04-18T20:45:21+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+from ..core import account_ref
+from ..core import context as context_1
+from ..core import error
+from ..core import ext as ext_1
+
+
+class Status(Enum):
+    synced = 'synced'
+    failed = 'failed'
+
+
+class Category(RootModel[str]):
+    root: Annotated[str, Field(max_length=64, pattern='^[a-z][a-z0-9_]*$')]
+
+
+class GovernanceAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL.')]
+    categories: Annotated[
+        list[Category] | None,
+        Field(description='Governance categories this agent handles.', max_length=20),
+    ] = None
+
+
+class SyncGovernanceResponse2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[error.Error],
+        Field(
+            description='Operation-level errors (e.g., authentication failure, service unavailable)',
+            min_length=1,
+        ),
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    account: Annotated[
+        account_ref.AccountReference, Field(description='Account reference, echoed from request')
+    ]
+    status: Annotated[
+        Status,
+        Field(
+            description='Sync result. synced: governance agents persisted. failed: could not complete (see errors).'
+        ),
+    ]
+    governance_agents: Annotated[
+        list[GovernanceAgent] | None,
+        Field(
+            description='Governance agents now synced on this account. Reflects the persisted state after sync.'
+        ),
+    ] = None
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(description="Per-account errors (only present when status is 'failed')"),
+    ] = None
+
+
+class SyncGovernanceResponse1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    accounts: Annotated[list[Account], Field(description='Per-account sync results')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+SyncGovernanceResponse = SyncGovernanceResponse1 | SyncGovernanceResponse2
diff --git a/src/adcp/types/generated_poc/adagents.py b/src/adcp/types/generated_poc/adagents.py
index b97813636..917abe2ee 100644
--- a/src/adcp/types/generated_poc/adagents.py
+++ b/src/adcp/types/generated_poc/adagents.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  adagents.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,6 +11,7 @@
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel
 
 from .core import (
+    agent_encryption_key,
     agent_signing_key,
     collection,
     collection_selector,
@@ -34,7 +35,7 @@ class AdcpAgentsAuthorization1(AdCPBaseModel):
     authoritative_location: Annotated[
         AnyUrl,
         Field(
-            description='HTTPS URL of the authoritative adagents.json file. When present, this file is a reference and the authoritative location contains the actual agent authorization data.'
+            description='HTTPS URL of the authoritative adagents.json file. When present, this file is a reference and the authoritative location contains the actual agent authorization data. Because one deploy can change authorization across every publisher in the network, validators MUST cap response size, refuse redirects on the fetch, enforce short timeouts, and serve the previously cached file on transient 5xx. See docs/governance/property/managed-networks#security-considerations.'
         ),
     ]
     last_updated: Annotated[
@@ -43,35 +44,18 @@ class AdcpAgentsAuthorization1(AdCPBaseModel):
     ] = None
 
 
-class Country(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
-
-
-class DelegationType(Enum):
-    direct = 'direct'
-    delegated = 'delegated'
-    ad_network = 'ad_network'
-
-
-class SignalId(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[a-zA-Z0-9_-]+$')]
-
-
-class SignalTag(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[a-z0-9_-]+$')]
-
-
 class Contact(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    domain: Annotated[
-        str | None,
+    name: Annotated[
+        str,
         Field(
-            description='Primary domain of the entity managing this file',
-            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+            description="Name of the entity managing this file (e.g., 'Meta Advertising Operations', 'Clear Channel Digital')",
+            max_length=255,
+            min_length=1,
         ),
-    ] = None
+    ]
     email: Annotated[
         EmailStr | None,
         Field(
@@ -80,18 +64,11 @@ class Contact(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    name: Annotated[
-        str,
-        Field(
-            description="Name of the entity managing this file (e.g., 'Meta Advertising Operations', 'Clear Channel Digital')",
-            max_length=255,
-            min_length=1,
-        ),
-    ]
-    privacy_policy_url: Annotated[
-        AnyUrl | None,
+    domain: Annotated[
+        str | None,
         Field(
-            description="URL to the entity's privacy policy. Used for consumer consent flows when interacting with this sales agent."
+            description='Primary domain of the entity managing this file',
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
         ),
     ] = None
     seller_id: Annotated[
@@ -110,22 +87,61 @@ class Contact(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    privacy_policy_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to the entity's privacy policy. Used for consumer consent flows when interacting with this sales agent."
+        ),
+    ] = None
+
+
+class Tags(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this tag')]
+    description: Annotated[str, Field(description='Description of what this tag represents')]
 
 
 class PlacementTags(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    name: Annotated[str, Field(description='Human-readable name for this placement tag')]
     description: Annotated[
         str, Field(description='Description of what this placement tag represents')
     ]
-    name: Annotated[str, Field(description='Human-readable name for this placement tag')]
+
+
+class DelegationType(Enum):
+    direct = 'direct'
+    delegated = 'delegated'
+    ad_network = 'ad_network'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class SignalId(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-zA-Z0-9_-]+$')]
+
+
+class SignalTag(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z0-9_-]+$')]
 
 
 class PropertyFeature(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    url: Annotated[AnyUrl, Field(description="The agent's API endpoint URL")]
+    name: Annotated[
+        str,
+        Field(
+            description="Human-readable name of the vendor/agent (e.g., 'Scope3', 'TAG', 'OneTrust')"
+        ),
+    ]
     features: Annotated[
         list[str],
         Field(
@@ -133,37 +149,20 @@ class PropertyFeature(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    name: Annotated[
-        str,
-        Field(
-            description="Human-readable name of the vendor/agent (e.g., 'Scope3', 'TAG', 'OneTrust')"
-        ),
-    ]
     publisher_id: Annotated[
         str | None, Field(description='Optional publisher identifier at this agent (for lookup)')
     ] = None
-    url: Annotated[AnyUrl, Field(description="The agent's API endpoint URL")]
-
-
-class SignalTags(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    description: Annotated[str, Field(description='Description of what this tag represents')]
-    name: Annotated[str, Field(description='Human-readable name for this tag')]
 
 
-Tags = SignalTags
+class SignalTags(Tags):
+    pass
 
 
 class AuthorizedAgents(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    authorization_type: Annotated[
-        Literal['property_ids'],
-        Field(description='Discriminator indicating authorization by specific property IDs'),
-    ]
+    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
     authorized_for: Annotated[
         str,
         Field(
@@ -172,6 +171,17 @@ class AuthorizedAgents(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    authorization_type: Annotated[
+        Literal['property_ids'],
+        Field(description='Discriminator indicating authorization by specific property IDs'),
+    ]
+    property_ids: Annotated[
+        list[property_id.PropertyId],
+        Field(
+            description='Property IDs this agent is authorized for. Resolved against the top-level properties array in this file',
+            min_length=1,
+        ),
+    ]
     collections: Annotated[
         list[collection_selector.CollectionSelector] | None,
         Field(
@@ -179,10 +189,17 @@ class AuthorizedAgents(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    countries: Annotated[
-        list[Country] | None,
+    placement_ids: Annotated[
+        list[str] | None,
         Field(
-            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
+            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
+            min_length=1,
+        ),
+    ] = None
+    placement_tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
             min_length=1,
         ),
     ] = None
@@ -192,40 +209,26 @@ class AuthorizedAgents(AdCPBaseModel):
             description="Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
         ),
     ] = None
-    effective_from: Annotated[
-        AwareDatetime | None,
-        Field(description='Optional start time for this authorization window.'),
-    ] = None
-    effective_until: Annotated[
-        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
-    ] = None
     exclusive: Annotated[
         bool | None,
         Field(
             description="Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
         ),
     ] = None
-    placement_ids: Annotated[
-        list[str] | None,
+    countries: Annotated[
+        list[Country] | None,
         Field(
-            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
+            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
             min_length=1,
         ),
     ] = None
-    placement_tags: Annotated[
-        list[str] | None,
-        Field(
-            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
-            min_length=1,
-        ),
+    effective_from: Annotated[
+        AwareDatetime | None,
+        Field(description='Optional start time for this authorization window.'),
+    ] = None
+    effective_until: Annotated[
+        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
     ] = None
-    property_ids: Annotated[
-        list[property_id.PropertyId],
-        Field(
-            description='Property IDs this agent is authorized for. Resolved against the top-level properties array in this file',
-            min_length=1,
-        ),
-    ]
     signing_keys: Annotated[
         list[agent_signing_key.AgentSigningKey] | None,
         Field(
@@ -233,17 +236,20 @@ class AuthorizedAgents(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
+    encryption_keys: Annotated[
+        list[agent_encryption_key.AgentEncryptionKey] | None,
+        Field(
+            description='X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base — read replicas encrypt with this public key, only the master can decrypt.',
+            min_length=1,
+        ),
+    ] = None
 
 
 class AuthorizedAgents1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    authorization_type: Annotated[
-        Literal['property_tags'],
-        Field(description='Discriminator indicating authorization by property tags'),
-    ]
+    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
     authorized_for: Annotated[
         str,
         Field(
@@ -252,6 +258,17 @@ class AuthorizedAgents1(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    authorization_type: Annotated[
+        Literal['property_tags'],
+        Field(description='Discriminator indicating authorization by property tags'),
+    ]
+    property_tags: Annotated[
+        list[property_tag.PropertyTag],
+        Field(
+            description='Tags identifying which properties this agent is authorized for. Resolved against the top-level properties array in this file using tag matching',
+            min_length=1,
+        ),
+    ]
     collections: Annotated[
         list[collection_selector.CollectionSelector] | None,
         Field(
@@ -259,10 +276,17 @@ class AuthorizedAgents1(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    countries: Annotated[
-        list[Country] | None,
+    placement_ids: Annotated[
+        list[str] | None,
         Field(
-            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
+            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
+            min_length=1,
+        ),
+    ] = None
+    placement_tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
             min_length=1,
         ),
     ] = None
@@ -272,40 +296,26 @@ class AuthorizedAgents1(AdCPBaseModel):
             description="Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
         ),
     ] = None
-    effective_from: Annotated[
-        AwareDatetime | None,
-        Field(description='Optional start time for this authorization window.'),
-    ] = None
-    effective_until: Annotated[
-        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
-    ] = None
     exclusive: Annotated[
         bool | None,
         Field(
             description="Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
         ),
     ] = None
-    placement_ids: Annotated[
-        list[str] | None,
+    countries: Annotated[
+        list[Country] | None,
         Field(
-            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
+            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
             min_length=1,
         ),
     ] = None
-    placement_tags: Annotated[
-        list[str] | None,
-        Field(
-            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
-            min_length=1,
-        ),
+    effective_from: Annotated[
+        AwareDatetime | None,
+        Field(description='Optional start time for this authorization window.'),
+    ] = None
+    effective_until: Annotated[
+        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
     ] = None
-    property_tags: Annotated[
-        list[property_tag.PropertyTag],
-        Field(
-            description='Tags identifying which properties this agent is authorized for. Resolved against the top-level properties array in this file using tag matching',
-            min_length=1,
-        ),
-    ]
     signing_keys: Annotated[
         list[agent_signing_key.AgentSigningKey] | None,
         Field(
@@ -313,24 +323,38 @@ class AuthorizedAgents1(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
+    encryption_keys: Annotated[
+        list[agent_encryption_key.AgentEncryptionKey] | None,
+        Field(
+            description='X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base — read replicas encrypt with this public key, only the master can decrypt.',
+            min_length=1,
+        ),
+    ] = None
 
 
 class AuthorizedAgents3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
+    authorized_for: Annotated[
+        str,
+        Field(
+            description='Human-readable description of what this agent is authorized to sell',
+            max_length=500,
+            min_length=1,
+        ),
+    ]
     authorization_type: Annotated[
         Literal['publisher_properties'],
         Field(
             description='Discriminator indicating authorization for properties from other publisher domains'
         ),
     ]
-    authorized_for: Annotated[
-        str,
+    publisher_properties: Annotated[
+        list[publisher_property_selector.PublisherPropertySelector],
         Field(
-            description='Human-readable description of what this agent is authorized to sell',
-            max_length=500,
+            description='Properties from other publisher domains this agent is authorized for. Each entry specifies a publisher domain and which of their properties this agent can sell',
             min_length=1,
         ),
     ]
@@ -341,25 +365,25 @@ class AuthorizedAgents3(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    countries: Annotated[
-        list[Country] | None,
+    placement_ids: Annotated[
+        list[str] | None,
         Field(
-            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
+            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
             min_length=1,
         ),
     ] = None
-    delegation_type: Annotated[
-        DelegationType | None,
+    placement_tags: Annotated[
+        list[str] | None,
         Field(
-            description="Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
+            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
+            min_length=1,
         ),
     ] = None
-    effective_from: Annotated[
-        AwareDatetime | None,
-        Field(description='Optional start time for this authorization window.'),
-    ] = None
-    effective_until: Annotated[
-        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
+    delegation_type: Annotated[
+        DelegationType | None,
+        Field(
+            description="Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
+        ),
     ] = None
     exclusive: Annotated[
         bool | None,
@@ -367,27 +391,20 @@ class AuthorizedAgents3(AdCPBaseModel):
             description="Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
         ),
     ] = None
-    placement_ids: Annotated[
-        list[str] | None,
+    countries: Annotated[
+        list[Country] | None,
         Field(
-            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
+            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
             min_length=1,
         ),
     ] = None
-    placement_tags: Annotated[
-        list[str] | None,
-        Field(
-            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
-            min_length=1,
-        ),
+    effective_from: Annotated[
+        AwareDatetime | None,
+        Field(description='Optional start time for this authorization window.'),
+    ] = None
+    effective_until: Annotated[
+        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
     ] = None
-    publisher_properties: Annotated[
-        list[publisher_property_selector.PublisherPropertySelector],
-        Field(
-            description='Properties from other publisher domains this agent is authorized for. Each entry specifies a publisher domain and which of their properties this agent can sell',
-            min_length=1,
-        ),
-    ]
     signing_keys: Annotated[
         list[agent_signing_key.AgentSigningKey] | None,
         Field(
@@ -395,17 +412,20 @@ class AuthorizedAgents3(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
+    encryption_keys: Annotated[
+        list[agent_encryption_key.AgentEncryptionKey] | None,
+        Field(
+            description='X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base — read replicas encrypt with this public key, only the master can decrypt.',
+            min_length=1,
+        ),
+    ] = None
 
 
 class AuthorizedAgents4(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    authorization_type: Annotated[
-        Literal['signal_ids'],
-        Field(description='Discriminator indicating authorization by specific signal IDs'),
-    ]
+    url: Annotated[AnyUrl, Field(description="The authorized signals agent's API endpoint URL")]
     authorized_for: Annotated[
         str,
         Field(
@@ -414,6 +434,10 @@ class AuthorizedAgents4(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    authorization_type: Annotated[
+        Literal['signal_ids'],
+        Field(description='Discriminator indicating authorization by specific signal IDs'),
+    ]
     signal_ids: Annotated[
         list[SignalId],
         Field(
@@ -428,17 +452,20 @@ class AuthorizedAgents4(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description="The authorized signals agent's API endpoint URL")]
+    encryption_keys: Annotated[
+        list[agent_encryption_key.AgentEncryptionKey] | None,
+        Field(
+            description='X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base — read replicas encrypt with this public key, only the master can decrypt.',
+            min_length=1,
+        ),
+    ] = None
 
 
 class AuthorizedAgents5(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    authorization_type: Annotated[
-        Literal['signal_tags'],
-        Field(description='Discriminator indicating authorization by signal tags'),
-    ]
+    url: Annotated[AnyUrl, Field(description="The authorized signals agent's API endpoint URL")]
     authorized_for: Annotated[
         str,
         Field(
@@ -447,6 +474,10 @@ class AuthorizedAgents5(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    authorization_type: Annotated[
+        Literal['signal_tags'],
+        Field(description='Discriminator indicating authorization by signal tags'),
+    ]
     signal_tags: Annotated[
         list[SignalTag],
         Field(
@@ -461,17 +492,20 @@ class AuthorizedAgents5(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description="The authorized signals agent's API endpoint URL")]
+    encryption_keys: Annotated[
+        list[agent_encryption_key.AgentEncryptionKey] | None,
+        Field(
+            description='X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base — read replicas encrypt with this public key, only the master can decrypt.',
+            min_length=1,
+        ),
+    ] = None
 
 
 class AuthorizedAgents2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    authorization_type: Annotated[
-        Literal['inline_properties'],
-        Field(description='Discriminator indicating authorization by inline property definitions'),
-    ]
+    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
     authorized_for: Annotated[
         str,
         Field(
@@ -480,6 +514,17 @@ class AuthorizedAgents2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    authorization_type: Annotated[
+        Literal['inline_properties'],
+        Field(description='Discriminator indicating authorization by inline property definitions'),
+    ]
+    properties: Annotated[
+        list[property.Property],
+        Field(
+            description='Specific properties this agent is authorized for (alternative to property_ids/property_tags)',
+            min_length=1,
+        ),
+    ]
     collections: Annotated[
         list[collection_selector.CollectionSelector] | None,
         Field(
@@ -487,10 +532,17 @@ class AuthorizedAgents2(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    countries: Annotated[
-        list[Country] | None,
+    placement_ids: Annotated[
+        list[str] | None,
         Field(
-            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
+            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
+            min_length=1,
+        ),
+    ] = None
+    placement_tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
             min_length=1,
         ),
     ] = None
@@ -500,40 +552,26 @@ class AuthorizedAgents2(AdCPBaseModel):
             description="Commercial relationship for this inventory path. 'direct' means the publisher treats this as a direct way to buy from them, even if a third party operates the software. 'delegated' means the agent is authorized to sell on the publisher's behalf. 'ad_network' means the inventory is sold as part of a network/package context rather than as the publisher's direct endpoint."
         ),
     ] = None
-    effective_from: Annotated[
-        AwareDatetime | None,
-        Field(description='Optional start time for this authorization window.'),
-    ] = None
-    effective_until: Annotated[
-        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
-    ] = None
     exclusive: Annotated[
         bool | None,
         Field(
             description="Whether this agent is the publisher's sole authorized path for the scoped inventory slice. When false or absent, other authorized agents may also sell the same inventory."
         ),
     ] = None
-    placement_ids: Annotated[
-        list[str] | None,
+    countries: Annotated[
+        list[Country] | None,
         Field(
-            description='Optional placement constraints. When present, authorization only applies to these placement IDs from the top-level placements array in this file.',
+            description='Optional ISO 3166-1 alpha-2 country codes limiting where this authorization applies. Omit for worldwide authorization.',
             min_length=1,
         ),
     ] = None
-    placement_tags: Annotated[
-        list[str] | None,
-        Field(
-            description='Optional placement tag constraints. When present, authorization only applies to placements whose tags include any of these publisher-defined values.',
-            min_length=1,
-        ),
+    effective_from: Annotated[
+        AwareDatetime | None,
+        Field(description='Optional start time for this authorization window.'),
+    ] = None
+    effective_until: Annotated[
+        AwareDatetime | None, Field(description='Optional end time for this authorization window.')
     ] = None
-    properties: Annotated[
-        list[property.Property],
-        Field(
-            description='Specific properties this agent is authorized for (alternative to property_ids/property_tags)',
-            min_length=1,
-        ),
-    ]
     signing_keys: Annotated[
         list[agent_signing_key.AgentSigningKey] | None,
         Field(
@@ -541,7 +579,13 @@ class AuthorizedAgents2(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description="The authorized agent's API endpoint URL")]
+    encryption_keys: Annotated[
+        list[agent_encryption_key.AgentEncryptionKey] | None,
+        Field(
+            description='X25519 public keys for TMPX exposure token encryption. Each key identifies a cluster master that can decrypt TMPX tokens. Used with HPKE mode_base — read replicas encrypt with this public key, only the master can decrypt.',
+            min_length=1,
+        ),
+    ] = None
 
 
 class AdcpAgentsAuthorization2(AdCPBaseModel):
@@ -552,35 +596,37 @@ class AdcpAgentsAuthorization2(AdCPBaseModel):
         str | None,
         Field(alias='$schema', description='JSON Schema identifier for this adagents.json file'),
     ] = None
-    authorized_agents: Annotated[
-        list[
-            AuthorizedAgents
-            | AuthorizedAgents1
-            | AuthorizedAgents2
-            | AuthorizedAgents3
-            | AuthorizedAgents4
-            | AuthorizedAgents5
-        ],
+    contact: Annotated[
+        Contact | None,
         Field(
-            description='Array of sales agents authorized to make inventory from this file available to buyers. Authorization can be scoped to specific properties, collections, countries, and time windows, with optional delegation metadata indicating whether the path is direct, delegated, or network-mediated.',
+            description='Contact information for the entity managing this adagents.json file (may be publisher or third-party operator)'
+        ),
+    ] = None
+    properties: Annotated[
+        list[property.Property] | None,
+        Field(
+            description='Array of all properties covered by this adagents.json file. Defines the canonical property list that authorized agents reference.',
             min_length=1,
         ),
-    ]
+    ] = None
     collections: Annotated[
         list[collection.Collection] | None,
         Field(
             description='Collections produced or distributed by this publisher. Declares the content programs whose inventory is sold through authorized agents. Products in get_products responses reference these collections by collection_id.'
         ),
     ] = None
-    contact: Annotated[
-        Contact | None,
+    placements: Annotated[
+        list[placement_definition.PlacementDefinition] | None,
         Field(
-            description='Contact information for the entity managing this adagents.json file (may be publisher or third-party operator)'
+            description='Canonical placement definitions for properties in this file. Products SHOULD reuse these placement_id values when exposing inventory in get_products, and authorized agents can scope authorization to these placement IDs.',
+            min_length=1,
         ),
     ] = None
-    last_updated: Annotated[
-        AwareDatetime | None,
-        Field(description='ISO 8601 timestamp indicating when this file was last updated'),
+    tags: Annotated[
+        dict[str, Tags] | None,
+        Field(
+            description='Metadata for each tag referenced by properties. Provides human-readable context for property tag values.'
+        ),
     ] = None
     placement_tags: Annotated[
         dict[str, PlacementTags] | None,
@@ -588,19 +634,23 @@ class AdcpAgentsAuthorization2(AdCPBaseModel):
             description='Metadata for each tag referenced by placements. Provides human-readable context for publisher-defined placement tag values used in grouping and authorization.'
         ),
     ] = None
-    placements: Annotated[
-        list[placement_definition.PlacementDefinition] | None,
-        Field(
-            description='Canonical placement definitions for properties in this file. Products SHOULD reuse these placement_id values when exposing inventory in get_products, and authorized agents can scope authorization to these placement IDs.',
-            min_length=1,
-        ),
-    ] = None
-    properties: Annotated[
-        list[property.Property] | None,
+    authorized_agents: Annotated[
+        list[
+            AuthorizedAgents
+            | AuthorizedAgents1
+            | AuthorizedAgents2
+            | AuthorizedAgents3
+            | AuthorizedAgents4
+            | AuthorizedAgents5
+        ],
         Field(
-            description='Array of all properties covered by this adagents.json file. Defines the canonical property list that authorized agents reference.',
+            description='Array of sales agents authorized to make inventory from this file available to buyers. Authorization can be scoped to specific properties, collections, countries, and time windows, with optional delegation metadata indicating whether the path is direct, delegated, or network-mediated.',
             min_length=1,
         ),
+    ]
+    last_updated: Annotated[
+        AwareDatetime | None,
+        Field(description='ISO 8601 timestamp indicating when this file was last updated'),
     ] = None
     property_features: Annotated[
         list[PropertyFeature] | None,
@@ -608,12 +658,6 @@ class AdcpAgentsAuthorization2(AdCPBaseModel):
             description='[AdCP 3.0] Optional list of agents that provide property feature data (certifications, scores, compliance status). Used for discovery - actual data is accessed through property list filters.'
         ),
     ] = None
-    signal_tags: Annotated[
-        dict[str, SignalTags] | None,
-        Field(
-            description='Metadata for each tag referenced by signals. Provides human-readable context for signal tag values.'
-        ),
-    ] = None
     signals: Annotated[
         list[signal_definition.SignalDefinition] | None,
         Field(
@@ -621,10 +665,10 @@ class AdcpAgentsAuthorization2(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    tags: Annotated[
-        dict[str, Tags] | None,
+    signal_tags: Annotated[
+        dict[str, SignalTags] | None,
         Field(
-            description='Metadata for each tag referenced by properties. Provides human-readable context for property tag values.'
+            description='Metadata for each tag referenced by signals. Provides human-readable context for signal tag values.'
         ),
     ] = None
 
@@ -636,307 +680,287 @@ class AdcpAgentsAuthorization(RootModel[AdcpAgentsAuthorization1 | AdcpAgentsAut
             description='Declaration of authorized agents for advertising inventory and data signals. Hosted at /.well-known/adagents.json on publisher domains (for properties) or data provider domains (for signals). Can either contain the full structure inline or reference an authoritative URL.',
             examples=[
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/adagents.json',
+                    '$schema': '/schemas/latest/adagents.json',
                     'authoritative_location': 'https://cdn.example.com/adagents/v2/adagents.json',
                     'last_updated': '2025-01-15T10:00:00Z',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/adagents.json',
-                    'authorized_agents': [
+                    '$schema': '/schemas/latest/adagents.json',
+                    'properties': [
                         {
-                            'authorization_type': 'property_tags',
-                            'authorized_for': 'Official sales agent',
-                            'countries': ['US', 'CA'],
-                            'delegation_type': 'direct',
-                            'effective_from': '2025-01-01T00:00:00Z',
-                            'exclusive': True,
-                            'placement_ids': ['homepage_banner'],
-                            'property_tags': ['all'],
-                            'url': 'https://agent.example.com',
+                            'property_id': 'example_site',
+                            'property_type': 'website',
+                            'name': 'Example Site',
+                            'identifiers': [{'type': 'domain', 'value': 'example.com'}],
+                            'publisher_domain': 'example.com',
                         }
                     ],
-                    'last_updated': '2025-01-10T12:00:00Z',
-                    'placement_tags': {
-                        'display': {
-                            'description': 'Standard display placements',
-                            'name': 'Display',
-                        },
-                        'homepage': {
-                            'description': 'Placements that render on the homepage',
-                            'name': 'Homepage',
-                        },
-                        'premium': {
-                            'description': 'Premium monetization placements',
-                            'name': 'Premium',
-                        },
-                    },
                     'placements': [
                         {
+                            'placement_id': 'homepage_banner',
+                            'name': 'Homepage Banner',
+                            'tags': ['homepage', 'display', 'premium'],
+                            'property_ids': ['example_site'],
                             'format_ids': [
                                 {
                                     'agent_url': 'https://creative.example.com',
                                     'id': 'display_728x90',
                                 }
                             ],
-                            'name': 'Homepage Banner',
-                            'placement_id': 'homepage_banner',
-                            'property_ids': ['example_site'],
-                            'tags': ['homepage', 'display', 'premium'],
                         }
                     ],
-                    'properties': [
-                        {
-                            'identifiers': [{'type': 'domain', 'value': 'example.com'}],
-                            'name': 'Example Site',
-                            'property_id': 'example_site',
-                            'property_type': 'website',
-                            'publisher_domain': 'example.com',
+                    'placement_tags': {
+                        'homepage': {
+                            'name': 'Homepage',
+                            'description': 'Placements that render on the homepage',
+                        },
+                        'display': {
+                            'name': 'Display',
+                            'description': 'Standard display placements',
+                        },
+                        'premium': {
+                            'name': 'Premium',
+                            'description': 'Premium monetization placements',
+                        },
+                    },
+                    'authorized_agents': [
+                        {
+                            'url': 'https://agent.example.com',
+                            'authorized_for': 'Official sales agent',
+                            'authorization_type': 'property_tags',
+                            'property_tags': ['all'],
+                            'placement_ids': ['homepage_banner'],
+                            'delegation_type': 'direct',
+                            'exclusive': True,
+                            'countries': ['US', 'CA'],
+                            'effective_from': '2025-01-01T00:00:00Z',
                         }
                     ],
                     'tags': {
                         'all': {
-                            'description': 'All properties in this file',
                             'name': 'All Properties',
+                            'description': 'All properties in this file',
                         }
                     },
+                    'last_updated': '2025-01-10T12:00:00Z',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/adagents.json',
-                    'authorized_agents': [
-                        {
-                            'authorization_type': 'property_tags',
-                            'authorized_for': 'All Meta properties',
-                            'property_tags': ['meta_network'],
-                            'url': 'https://meta-ads.com',
-                        }
-                    ],
+                    '$schema': '/schemas/latest/adagents.json',
                     'contact': {
-                        'domain': 'meta.com',
-                        'email': 'adops@meta.com',
                         'name': 'Meta Advertising Operations',
-                        'privacy_policy_url': 'https://www.meta.com/privacy/policy',
+                        'email': 'adops@meta.com',
+                        'domain': 'meta.com',
                         'seller_id': 'pub-meta-12345',
                         'tag_id': '12345',
+                        'privacy_policy_url': 'https://www.meta.com/privacy/policy',
                     },
-                    'last_updated': '2025-01-10T15:30:00Z',
                     'properties': [
                         {
+                            'property_type': 'mobile_app',
+                            'name': 'Instagram',
                             'identifiers': [
                                 {'type': 'ios_bundle', 'value': 'com.burbn.instagram'},
                                 {'type': 'android_package', 'value': 'com.instagram.android'},
                             ],
-                            'name': 'Instagram',
-                            'property_type': 'mobile_app',
-                            'publisher_domain': 'instagram.com',
-                            'supported_channels': ['social', 'display', 'olv'],
                             'tags': ['meta_network', 'social_media'],
+                            'supported_channels': ['social', 'display', 'olv'],
+                            'publisher_domain': 'instagram.com',
                         },
                         {
+                            'property_type': 'mobile_app',
+                            'name': 'Facebook',
                             'identifiers': [
                                 {'type': 'ios_bundle', 'value': 'com.facebook.Facebook'},
                                 {'type': 'android_package', 'value': 'com.facebook.katana'},
                             ],
-                            'name': 'Facebook',
-                            'property_type': 'mobile_app',
-                            'publisher_domain': 'facebook.com',
-                            'supported_channels': ['social', 'display', 'olv'],
                             'tags': ['meta_network', 'social_media'],
+                            'supported_channels': ['social', 'display', 'olv'],
+                            'publisher_domain': 'facebook.com',
                         },
                         {
+                            'property_type': 'mobile_app',
+                            'name': 'WhatsApp',
                             'identifiers': [
                                 {'type': 'ios_bundle', 'value': 'net.whatsapp.WhatsApp'},
                                 {'type': 'android_package', 'value': 'com.whatsapp'},
                             ],
-                            'name': 'WhatsApp',
-                            'property_type': 'mobile_app',
-                            'publisher_domain': 'whatsapp.com',
-                            'supported_channels': ['social', 'display'],
                             'tags': ['meta_network', 'messaging'],
+                            'supported_channels': ['social', 'display'],
+                            'publisher_domain': 'whatsapp.com',
                         },
                     ],
                     'tags': {
-                        'messaging': {
-                            'description': 'Messaging and communication apps',
-                            'name': 'Messaging Apps',
-                        },
                         'meta_network': {
-                            'description': 'All Meta-owned properties',
                             'name': 'Meta Network',
+                            'description': 'All Meta-owned properties',
                         },
                         'social_media': {
-                            'description': 'Social networking applications',
                             'name': 'Social Media Apps',
+                            'description': 'Social networking applications',
+                        },
+                        'messaging': {
+                            'name': 'Messaging Apps',
+                            'description': 'Messaging and communication apps',
                         },
                     },
-                },
-                {
-                    '$schema': '/schemas/3.0.0-rc.3/adagents.json',
                     'authorized_agents': [
                         {
+                            'url': 'https://meta-ads.com',
+                            'authorized_for': 'All Meta properties',
                             'authorization_type': 'property_tags',
-                            'authorized_for': 'Tumblr corporate properties only',
-                            'property_tags': ['corporate'],
-                            'url': 'https://tumblr-sales.com',
+                            'property_tags': ['meta_network'],
                         }
                     ],
+                    'last_updated': '2025-01-10T15:30:00Z',
+                },
+                {
+                    '$schema': '/schemas/latest/adagents.json',
                     'contact': {'name': 'Tumblr Advertising'},
-                    'last_updated': '2025-01-10T16:00:00Z',
                     'properties': [
                         {
-                            'identifiers': [{'type': 'domain', 'value': 'tumblr.com'}],
-                            'name': 'Tumblr Corporate',
                             'property_type': 'website',
-                            'publisher_domain': 'tumblr.com',
+                            'name': 'Tumblr Corporate',
+                            'identifiers': [{'type': 'domain', 'value': 'tumblr.com'}],
                             'tags': ['corporate'],
+                            'publisher_domain': 'tumblr.com',
                         }
                     ],
                     'tags': {
                         'corporate': {
-                            'description': 'Tumblr-owned corporate properties (not user blogs)',
                             'name': 'Corporate Properties',
+                            'description': 'Tumblr-owned corporate properties (not user blogs)',
                         }
                     },
+                    'authorized_agents': [
+                        {
+                            'url': 'https://tumblr-sales.com',
+                            'authorized_for': 'Tumblr corporate properties only',
+                            'authorization_type': 'property_tags',
+                            'property_tags': ['corporate'],
+                        }
+                    ],
+                    'last_updated': '2025-01-10T16:00:00Z',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/adagents.json',
+                    '$schema': '/schemas/latest/adagents.json',
+                    'contact': {
+                        'name': 'Example Third-Party Sales Agent',
+                        'email': 'sales@agent.example',
+                        'domain': 'agent.example',
+                    },
                     'authorized_agents': [
                         {
-                            'authorization_type': 'publisher_properties',
+                            'url': 'https://agent.example/api',
                             'authorized_for': 'CNN CTV properties via publisher authorization',
+                            'authorization_type': 'publisher_properties',
                             'publisher_properties': [
                                 {
-                                    'property_ids': ['cnn_ctv_app'],
                                     'publisher_domain': 'cnn.com',
                                     'selection_type': 'by_id',
+                                    'property_ids': ['cnn_ctv_app'],
                                 }
                             ],
-                            'url': 'https://agent.example/api',
                         },
                         {
-                            'authorization_type': 'publisher_properties',
+                            'url': 'https://agent.example/api',
                             'authorized_for': 'All CTV properties from multiple publishers',
+                            'authorization_type': 'publisher_properties',
                             'publisher_properties': [
                                 {
-                                    'property_tags': ['ctv'],
                                     'publisher_domain': 'cnn.com',
                                     'selection_type': 'by_tag',
+                                    'property_tags': ['ctv'],
                                 },
                                 {
-                                    'property_tags': ['ctv'],
                                     'publisher_domain': 'espn.com',
                                     'selection_type': 'by_tag',
+                                    'property_tags': ['ctv'],
                                 },
                             ],
-                            'url': 'https://agent.example/api',
                         },
                     ],
-                    'contact': {
-                        'domain': 'agent.example',
-                        'email': 'sales@agent.example',
-                        'name': 'Example Third-Party Sales Agent',
-                    },
                     'last_updated': '2025-01-10T17:00:00Z',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/adagents.json',
-                    'authorized_agents': [
-                        {
-                            'authorization_type': 'property_tags',
-                            'authorized_for': 'All news properties',
-                            'property_tags': ['news'],
-                            'url': 'https://sales.news.example.com',
-                        }
-                    ],
+                    '$schema': '/schemas/latest/adagents.json',
                     'contact': {
-                        'domain': 'news.example.com',
-                        'email': 'adops@news.example.com',
                         'name': 'Premium News Publisher',
+                        'email': 'adops@news.example.com',
+                        'domain': 'news.example.com',
                     },
-                    'last_updated': '2025-01-10T18:00:00Z',
                     'properties': [
                         {
-                            'identifiers': [{'type': 'domain', 'value': 'news.example.com'}],
-                            'name': 'News Example',
                             'property_type': 'website',
-                            'publisher_domain': 'news.example.com',
+                            'name': 'News Example',
+                            'identifiers': [{'type': 'domain', 'value': 'news.example.com'}],
                             'tags': ['premium', 'news'],
+                            'publisher_domain': 'news.example.com',
+                        }
+                    ],
+                    'tags': {
+                        'premium': {
+                            'name': 'Premium Properties',
+                            'description': 'High-quality, brand-safe properties',
+                        },
+                        'news': {
+                            'name': 'News Properties',
+                            'description': 'News and journalism content',
+                        },
+                    },
+                    'authorized_agents': [
+                        {
+                            'url': 'https://sales.news.example.com',
+                            'authorized_for': 'All news properties',
+                            'authorization_type': 'property_tags',
+                            'property_tags': ['news'],
                         }
                     ],
                     'property_features': [
                         {
-                            'features': ['carbon_score', 'sustainability_grade'],
+                            'url': 'https://api.scope3.com',
                             'name': 'Scope3',
+                            'features': ['carbon_score', 'sustainability_grade'],
                             'publisher_id': 'pub_news_12345',
-                            'url': 'https://api.scope3.com',
                         },
                         {
+                            'url': 'https://api.tagtoday.net',
+                            'name': 'TAG',
                             'features': [
                                 'tag_certified_against_fraud',
                                 'tag_brand_safety_certified',
                             ],
-                            'name': 'TAG',
-                            'url': 'https://api.tagtoday.net',
                         },
                         {
-                            'features': ['gdpr_compliant', 'tcf_registered', 'ccpa_compliant'],
+                            'url': 'https://api.onetrust.com',
                             'name': 'OneTrust',
+                            'features': ['gdpr_compliant', 'tcf_registered', 'ccpa_compliant'],
                             'publisher_id': 'ot_news_67890',
-                            'url': 'https://api.onetrust.com',
                         },
                     ],
-                    'tags': {
-                        'news': {
-                            'description': 'News and journalism content',
-                            'name': 'News Properties',
-                        },
-                        'premium': {
-                            'description': 'High-quality, brand-safe properties',
-                            'name': 'Premium Properties',
-                        },
-                    },
+                    'last_updated': '2025-01-10T18:00:00Z',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/adagents.json',
-                    'authorized_agents': [
-                        {
-                            'authorization_type': 'signal_tags',
-                            'authorized_for': 'All Polk automotive signals via LiveRamp',
-                            'signal_tags': ['automotive'],
-                            'url': 'https://liveramp.com/.well-known/adcp/signals',
-                        },
-                        {
-                            'authorization_type': 'signal_ids',
-                            'authorized_for': 'Polk premium signals only',
-                            'signal_ids': ['likely_tesla_buyers'],
-                            'url': 'https://the-trade-desk.com/.well-known/adcp/signals',
-                        },
-                    ],
+                    '$schema': '/schemas/latest/adagents.json',
                     'contact': {
-                        'domain': 'polk.com',
-                        'email': 'partnerships@polk.com',
                         'name': 'Polk Automotive Data',
-                    },
-                    'last_updated': '2025-01-15T10:00:00Z',
-                    'signal_tags': {
-                        'automotive': {
-                            'description': 'Vehicle-related audience segments',
-                            'name': 'Automotive Signals',
-                        },
-                        'premium': {
-                            'description': 'High-value premium audience segments',
-                            'name': 'Premium Signals',
-                        },
+                        'email': 'partnerships@polk.com',
+                        'domain': 'polk.com',
                     },
                     'signals': [
                         {
-                            'category': 'purchase_intent',
-                            'description': 'Consumers modeled as likely to purchase a Tesla in the next 12 months based on vehicle registration, financial, and behavioral data',
                             'id': 'likely_tesla_buyers',
                             'name': 'Likely Tesla Buyers',
-                            'tags': ['automotive', 'premium'],
+                            'description': 'Consumers modeled as likely to purchase a Tesla in the next 12 months based on vehicle registration, financial, and behavioral data',
                             'value_type': 'binary',
+                            'category': 'purchase_intent',
+                            'tags': ['automotive', 'premium'],
                         },
                         {
+                            'id': 'vehicle_ownership',
+                            'name': 'Current Vehicle Ownership',
+                            'description': 'Current vehicle make owned by the consumer',
+                            'value_type': 'categorical',
+                            'category': 'ownership',
                             'allowed_values': [
                                 'tesla',
                                 'bmw',
@@ -946,23 +970,43 @@ class AdcpAgentsAuthorization(RootModel[AdcpAgentsAuthorization1 | AdcpAgentsAut
                                 'other_luxury',
                                 'non_luxury',
                             ],
-                            'category': 'ownership',
-                            'description': 'Current vehicle make owned by the consumer',
-                            'id': 'vehicle_ownership',
-                            'name': 'Current Vehicle Ownership',
                             'tags': ['automotive'],
-                            'value_type': 'categorical',
                         },
                         {
-                            'category': 'purchase_intent',
-                            'description': 'Likelihood score of purchasing any new vehicle in the next 6 months',
                             'id': 'purchase_propensity',
                             'name': 'Auto Purchase Propensity',
-                            'range': {'max': 1, 'min': 0, 'unit': 'score'},
-                            'tags': ['automotive'],
+                            'description': 'Likelihood score of purchasing any new vehicle in the next 6 months',
                             'value_type': 'numeric',
+                            'category': 'purchase_intent',
+                            'range': {'min': 0, 'max': 1, 'unit': 'score'},
+                            'tags': ['automotive'],
                         },
                     ],
+                    'signal_tags': {
+                        'automotive': {
+                            'name': 'Automotive Signals',
+                            'description': 'Vehicle-related audience segments',
+                        },
+                        'premium': {
+                            'name': 'Premium Signals',
+                            'description': 'High-value premium audience segments',
+                        },
+                    },
+                    'authorized_agents': [
+                        {
+                            'url': 'https://liveramp.com/.well-known/adcp/signals',
+                            'authorized_for': 'All Polk automotive signals via LiveRamp',
+                            'authorization_type': 'signal_tags',
+                            'signal_tags': ['automotive'],
+                        },
+                        {
+                            'url': 'https://the-trade-desk.com/.well-known/adcp/signals',
+                            'authorized_for': 'Polk premium signals only',
+                            'authorization_type': 'signal_ids',
+                            'signal_ids': ['likely_tesla_buyers'],
+                        },
+                    ],
+                    'last_updated': '2025-01-15T10:00:00Z',
                 },
             ],
             title='AdCP Agents Authorization',
diff --git a/src/adcp/types/generated_poc/brand/__init__.py b/src/adcp/types/generated_poc/brand/__init__.py
index 19be57ea6..c1d27026f 100644
--- a/src/adcp/types/generated_poc/brand/__init__.py
+++ b/src/adcp/types/generated_poc/brand/__init__.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T21:01:10+00:00
 
 from __future__ import annotations
 
@@ -10,7 +10,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel
 
-from ..enums import advertiser_industry, asset_content_type, right_type, right_use, talent_role
+from ..enums import asset_content_type, brand_agent_type, right_type, right_use, talent_role
 
 
 class BrandDiscovery1(AdCPBaseModel):
@@ -28,149 +28,104 @@ class Trademark(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    mark: str
-    number: str
     registry: str
+    number: str
+    mark: str
 
 
-class Asset(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    asset_id: Annotated[str, Field(description='Unique identifier')]
-    asset_type: Annotated[
-        asset_content_type.AssetContentType, Field(description='Type of asset content')
+class Domain(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='A valid domain name',
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
     ]
-    description: Annotated[str | None, Field(description='Asset description or usage notes')] = None
-    duration_seconds: Annotated[
-        float | None, Field(description='Video/audio duration in seconds')
-    ] = None
-    file_size_bytes: Annotated[int | None, Field(description='File size in bytes')] = None
-    format: Annotated[str | None, Field(description="File format (e.g., 'jpg', 'mp4', 'mp3')")] = (
-        None
-    )
-    height: Annotated[int | None, Field(description='Image/video height in pixels')] = None
-    metadata: Annotated[
-        dict[str, Any] | None, Field(description='Additional asset-specific metadata')
-    ] = None
-    name: Annotated[str | None, Field(description='Human-readable name')] = None
-    tags: Annotated[
-        list[str] | None,
-        Field(description="Tags for discovery (e.g., 'hero', 'lifestyle', 'product', 'holiday')"),
-    ] = None
-    url: Annotated[AnyUrl, Field(description='URL to CDN-hosted asset file')]
-    width: Annotated[int | None, Field(description='Image/video width in pixels')] = None
 
 
-class Type(Enum):
-    icon_set = 'icon_set'
-    illustration_system = 'illustration_system'
-    image_library = 'image_library'
-    video_library = 'video_library'
-    template_library = 'template_library'
+class BrandId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Brand identifier within the house portfolio. Lowercase alphanumeric with underscores. House chooses this ID.',
+            pattern='^[a-z0-9_]+$',
+        ),
+    ]
 
 
-class Brand1(RootModel[str]):
-    root: Annotated[str, Field(pattern='^([a-z0-9_]+|\\*)$')]
+class LocalizedName(RootModel[dict[str, str]]):
+    root: Annotated[dict[str, str], Field(min_length=1)]
 
 
-class Country(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+class KellerType(Enum):
+    master = 'master'
+    sub_brand = 'sub_brand'
+    endorsed = 'endorsed'
+    independent = 'independent'
 
 
-class Avatar(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    avatar_id: str | None = None
-    provider: str | None = None
-    settings: dict[str, Any] | None = None
+class Orientation(Enum):
+    square = 'square'
+    horizontal = 'horizontal'
+    vertical = 'vertical'
+    stacked = 'stacked'
 
 
-class Contact1(AdCPBaseModel):
-    email: Annotated[EmailStr | None, Field(description='Contact email')] = None
-    phone: Annotated[str | None, Field(description='Contact phone number')] = None
+class Background(Enum):
+    dark_bg = 'dark-bg'
+    light_bg = 'light-bg'
+    transparent_bg = 'transparent-bg'
 
 
-class Disclaimer(AdCPBaseModel):
-    context: str | None = None
-    required: bool | None = True
-    text: str
+class Variant(Enum):
+    primary = 'primary'
+    secondary = 'secondary'
+    icon = 'icon'
+    wordmark = 'wordmark'
+    full_lockup = 'full-lockup'
 
 
-class Tone(AdCPBaseModel):
-    attributes: Annotated[
-        list[str] | None, Field(description='Personality traits that characterize the brand voice')
-    ] = None
-    donts: Annotated[
-        list[str] | None, Field(description='Guardrails to avoid brand violations - what NOT to do')
+class Logo(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the logo asset')]
+    orientation: Annotated[
+        Orientation | None,
+        Field(
+            description='Logo aspect ratio orientation. square: ~1:1, horizontal: wide, vertical: tall, stacked: vertically arranged elements'
+        ),
     ] = None
-    dos: Annotated[
-        list[str] | None, Field(description='Guidance for copy generation - what TO do')
+    background: Annotated[
+        Background | None,
+        Field(
+            description='Background compatibility. dark-bg: use on dark backgrounds, light-bg: use on light backgrounds, transparent-bg: has transparent background'
+        ),
     ] = None
-    voice: Annotated[
-        str | None,
+    variant: Annotated[
+        Variant | None,
         Field(
-            description="High-level voice descriptor (e.g., 'warm and inviting', 'professional and trustworthy')"
+            description='Logo variant type. primary: main logo, secondary: alternative, icon: symbol only, wordmark: text only, full-lockup: complete logo'
         ),
     ] = None
-
-
-class VoiceSynthesis(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    provider: str | None = None
-    settings: dict[str, Any] | None = None
-    voice_id: str | None = None
-
-
-class BrandAgent(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    id: Annotated[
-        str,
+    tags: Annotated[
+        list[str] | None,
         Field(
-            description='Agent identifier (useful for logging, multi-tenant DAMs)',
-            pattern='^[a-z0-9_]+$',
+            description='Additional semantic tags for custom categorization beyond the standard orientation, background, and variant fields'
         ),
-    ]
-    url: Annotated[AnyUrl, Field(description='Brand agent MCP endpoint URL')]
-
-
-class BrandId(RootModel[str]):
-    root: Annotated[
-        str,
+    ] = None
+    usage: Annotated[
+        str | None,
         Field(
-            description='Brand identifier within the house portfolio. Lowercase alphanumeric with underscores. House chooses this ID.',
-            pattern='^[a-z0-9_]+$',
+            description="Human-readable description of when to use this logo variant (e.g., 'Primary logo for use on light backgrounds')"
         ),
-    ]
-
-
-class Usage(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    max_per_layout: Annotated[
-        int | None, Field(description='Maximum distinct shapes per layout')
     ] = None
-    overlap_allowed: Annotated[bool | None, Field(description='Whether shapes may overlap')] = None
+    width: Annotated[int | None, Field(description='Width in pixels')] = None
+    height: Annotated[int | None, Field(description='Height in pixels')] = None
 
 
-class BrandShapes(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    primary_shape: Annotated[
-        str | None,
-        Field(description="Primary brand shape (e.g., 'rounded_rectangle', 'circle', 'hexagon')"),
-    ] = None
-    secondary_shapes: Annotated[
-        list[str] | None, Field(description='Secondary shapes in the brand vocabulary')
-    ] = None
-    usage: Annotated[Usage | None, Field(description='Shape usage rules')] = None
+class HexColor(RootModel[str]):
+    root: Annotated[str, Field(description='A single hex color value', pattern='^#[0-9A-Fa-f]{6}$')]
 
 
 class ColorValue1(RootModel[str]):
@@ -196,131 +151,464 @@ def __getattr__(self, name: str) -> Any:
 
 
 class Colors(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    accent: ColorValue | None = None
-    background: ColorValue | None = None
     primary: ColorValue | None = None
     secondary: ColorValue | None = None
+    accent: ColorValue | None = None
+    background: ColorValue | None = None
     text: ColorValue | None = None
+    heading: ColorValue | None = None
+    body: ColorValue | None = None
+    label: ColorValue | None = None
+    border: ColorValue | None = None
+    divider: ColorValue | None = None
+    surface_1: ColorValue | None = None
+    surface_2: ColorValue | None = None
 
 
-class TypesAllowedEnum(Enum):
-    solid_color = 'solid_color'
-    gradient = 'gradient'
-    blurred_photo = 'blurred_photo'
-    image = 'image'
-    video = 'video'
-    pattern = 'pattern'
-    transparent = 'transparent'
-
-
-class Backgrounds(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    types_allowed: Annotated[
-        list[TypesAllowedEnum] | None, Field(description='Permitted background types')
-    ] = None
+class WeightRangeItem(RootModel[int]):
+    root: Annotated[int, Field(ge=100, le=900)]
 
 
-class GradientStyle(Enum):
-    linear = 'linear'
-    radial = 'radial'
-    conic = 'conic'
-    none = 'none'
+class Style(Enum):
+    normal = 'normal'
+    italic = 'italic'
+    oblique = 'oblique'
 
 
-class Overlays(AdCPBaseModel):
+class FontFile(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    gradient_direction: Annotated[
-        str | None, Field(description="Gradient direction (e.g., '45deg', 'to-bottom-right')")
+    url: Annotated[AnyUrl, Field(description='HTTPS URL to the font file (WOFF2, TTF, or OTF)')]
+    weight: Annotated[
+        int | None,
+        Field(description='CSS numeric font-weight for static fonts (100-900)', ge=100, le=900),
     ] = None
-    gradient_style: Annotated[
-        GradientStyle | None, Field(description='Gradient type for overlays')
+    weight_range: Annotated[
+        list[WeightRangeItem] | None,
+        Field(
+            description='Variable font weight axis range as [min, max] (e.g., [100, 900]). Use instead of weight for variable fonts.',
+            max_length=2,
+            min_length=2,
+        ),
     ] = None
-    opacity: Annotated[str | None, Field(description="Overlay opacity (e.g., '70%')")] = None
+    style: Annotated[Style | None, Field(description='CSS font-style')] = None
 
 
-class Intensity(Enum):
-    low = 'low'
-    medium = 'medium'
-    high = 'high'
+class OpentypeFeature(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z0-9]{4}$')]
 
 
-class Style(Enum):
-    none = 'none'
-    subtle_grain = 'subtle_grain'
-    noise = 'noise'
-    paper = 'paper'
-    fabric = 'fabric'
-    concrete = 'concrete'
+class Fallback(RootModel[str]):
+    root: Annotated[str, Field(max_length=100)]
 
 
-class Texture(AdCPBaseModel):
+class FontRole1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    intensity: Annotated[Intensity | None, Field(description='Texture intensity')] = None
-    style: Annotated[
-        Style | None, Field(description='Texture style applied to creative assets')
+    family: Annotated[str, Field(description="CSS font-family name (e.g., 'Brand Sans')")]
+    files: Annotated[
+        list[FontFile] | None,
+        Field(description='Font files for different weights and styles', max_length=36),
+    ] = None
+    opentype_features: Annotated[
+        list[OpentypeFeature] | None,
+        Field(
+            description="OpenType feature tags to enable (e.g., ['ss01', 'tnum', 'cv01']). These are four-character tags per the OpenType spec.",
+            max_length=20,
+        ),
+    ] = None
+    fallbacks: Annotated[
+        list[Fallback] | None,
+        Field(
+            description="Ordered fallback font-family names for when the primary font is unavailable or does not support the required script (e.g., ['Noto Sans Arabic', 'Noto Sans SC', 'sans-serif'])",
+            max_length=10,
+        ),
     ] = None
 
 
-class CompositionRules(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    backgrounds: Annotated[Backgrounds | None, Field(description='Background treatment rules')] = (
-        None
-    )
-    overlays: Annotated[Overlays | None, Field(description='Graphic overlay rules')] = None
-    texture: Annotated[Texture | None, Field(description='Texture treatment rules')] = None
-
-
-class Domain(RootModel[str]):
+class FontRole(RootModel[str | FontRole1]):
     root: Annotated[
-        str,
+        str | FontRole1,
         Field(
-            description='A valid domain name',
-            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+            description='A font role entry. Either a CSS font-family string (simple) or a structured object with family name and font files (rich).'
         ),
     ]
 
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
 
 class Fonts(AdCPBaseModel):
+    primary: Annotated[FontRole | None, Field(description='Primary font family')] = None
+    secondary: Annotated[FontRole | None, Field(description='Secondary font family')] = None
+
+
+class Asset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    font_urls: Annotated[list[AnyUrl] | None, Field(description='URLs to web font files')] = None
-    primary: Annotated[str | None, Field(description='Primary font family')] = None
-    secondary: Annotated[str | None, Field(description='Secondary font family')] = None
+    asset_id: Annotated[str, Field(description='Unique identifier')]
+    asset_type: Annotated[
+        asset_content_type.AssetContentType, Field(description='Type of asset content')
+    ]
+    url: Annotated[AnyUrl, Field(description='URL to CDN-hosted asset file')]
+    tags: Annotated[
+        list[str] | None,
+        Field(description="Tags for discovery (e.g., 'hero', 'lifestyle', 'product', 'holiday')"),
+    ] = None
+    name: Annotated[str | None, Field(description='Human-readable name')] = None
+    description: Annotated[str | None, Field(description='Asset description or usage notes')] = None
+    width: Annotated[int | None, Field(description='Image/video width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image/video height in pixels')] = None
+    duration_seconds: Annotated[
+        float | None, Field(description='Video/audio duration in seconds')
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes')] = None
+    format: Annotated[str | None, Field(description="File format (e.g., 'jpg', 'mp4', 'mp3')")] = (
+        None
+    )
+    metadata: Annotated[
+        dict[str, Any] | None, Field(description='Additional asset-specific metadata')
+    ] = None
 
 
-class Orientation(Enum):
-    horizontal = 'horizontal'
-    vertical = 'vertical'
-    any = 'any'
+class Type(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
 
 
-class Type1(Enum):
-    border = 'border'
-    divider = 'divider'
-    frame = 'frame'
-    watermark = 'watermark'
-    pattern = 'pattern'
-    texture_overlay = 'texture_overlay'
-    decorative = 'decorative'
+class Store(Enum):
+    apple = 'apple'
+    google = 'google'
+    amazon = 'amazon'
+    roku = 'roku'
+    samsung = 'samsung'
+    lg = 'lg'
+    other = 'other'
 
 
-class StrokeStyle(Enum):
-    rounded = 'rounded'
-    square = 'square'
-    mixed = 'mixed'
-    none = 'none'
+class Relationship(Enum):
+    owned = 'owned'
+    direct = 'direct'
+    delegated = 'delegated'
+    ad_network = 'ad_network'
+
+
+class Property(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Type, Field(description='Property type')]
+    identifier: Annotated[
+        str,
+        Field(
+            description='Property identifier - domain for websites, bundle ID for apps',
+            min_length=1,
+        ),
+    ]
+    store: Annotated[Store | None, Field(description='App store for mobile/CTV apps')] = None
+    region: Annotated[
+        str | None,
+        Field(
+            description="ISO 3166-1 alpha-2 country code or 'global'", pattern='^([A-Z]{2}|global)$'
+        ),
+    ] = None
+    primary: Annotated[
+        bool | None, Field(description='Whether this is the primary property for the brand')
+    ] = False
+    relationship: Annotated[
+        Relationship | None,
+        Field(
+            description="How this brand relates to the property, using the same vocabulary as adagents.json delegation_type. 'owned': the brand owns and operates this property (default). 'direct': the brand is the direct sales path for this property, even if a third party operates the software (e.g., a publisher's in-house ad team using a vendor's tech). 'delegated': the brand manages monetization for this property — they are in charge of ad sales (e.g., Mediavine managing a food blog). 'ad_network': the brand sells this property's inventory as part of a network or exchange — they are a path to the inventory, not the path (e.g., PubMatic as an SSP). For non-owned properties, the publisher confirms the relationship by setting the matching delegation_type on the agent's authorization in their adagents.json."
+        ),
+    ] = Relationship.owned
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    openai_product_feed = 'openai_product_feed'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class AgenticCheckout(AdCPBaseModel):
+    endpoint: Annotated[AnyUrl, Field(description='Base URL for checkout session API')]
+    spec: Annotated[
+        Literal['openai_agentic_checkout_v1'], Field(description='Checkout API specification')
+    ]
+    supported_payment_providers: Annotated[
+        list[str] | None, Field(description='Payment providers supported by this checkout endpoint')
+    ] = None
+
+
+class ProductCatalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_url: Annotated[AnyUrl, Field(description='URL to product catalog feed')]
+    feed_format: Annotated[FeedFormat | None, Field(description='Format of the product feed')] = (
+        None
+    )
+    categories: Annotated[
+        list[str] | None, Field(description='Product categories available in the catalog')
+    ] = None
+    last_updated: Annotated[
+        AwareDatetime | None, Field(description='When the product catalog was last updated')
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None, Field(description='How frequently the product catalog is updated')
+    ] = None
+    agentic_checkout: Annotated[
+        AgenticCheckout | None, Field(description='Agentic checkout endpoint configuration')
+    ] = None
+
+
+class Tone(AdCPBaseModel):
+    voice: Annotated[
+        str | None,
+        Field(
+            description="High-level voice descriptor (e.g., 'warm and inviting', 'professional and trustworthy')"
+        ),
+    ] = None
+    attributes: Annotated[
+        list[str] | None, Field(description='Personality traits that characterize the brand voice')
+    ] = None
+    dos: Annotated[
+        list[str] | None, Field(description='Guidance for copy generation - what TO do')
+    ] = None
+    donts: Annotated[
+        list[str] | None, Field(description='Guardrails to avoid brand violations - what NOT to do')
+    ] = None
+
+
+class Tagline(RootModel[list[LocalizedName]]):
+    root: Annotated[
+        list[LocalizedName],
+        Field(description='Localized taglines with BCP 47 locale codes', min_length=1),
+    ]
+
+
+class Disclaimer(AdCPBaseModel):
+    text: str
+    context: str | None = None
+    required: bool | None = True
+
+
+class VoiceSynthesis(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: str | None = None
+    voice_id: str | None = None
+    settings: dict[str, Any] | None = None
+
+
+class Avatar(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: str | None = None
+    avatar_id: str | None = None
+    settings: dict[str, Any] | None = None
+
+
+class Contact1(AdCPBaseModel):
+    email: Annotated[EmailStr | None, Field(description='Contact email')] = None
+    phone: Annotated[str | None, Field(description='Contact phone number')] = None
+
+
+class Architecture(Enum):
+    branded_house = 'branded_house'
+    house_of_brands = 'house_of_brands'
+    hybrid = 'hybrid'
+
+
+class BrandAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Brand agent MCP endpoint URL')]
+    id: Annotated[
+        str,
+        Field(
+            description='Agent identifier (useful for logging, multi-tenant DAMs)',
+            pattern='^[a-z0-9_]+$',
+        ),
+    ]
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ScopeEnum(Enum):
+    spend_authority = 'spend_authority'
+    delivery_monitor = 'delivery_monitor'
+    brand_safety = 'brand_safety'
+    regulatory_compliance = 'regulatory_compliance'
+
+
+class Brand1(RootModel[str]):
+    root: Annotated[str, Field(pattern='^([a-z0-9_]+|\\*)$')]
+
+
+class AuthorizedOperator(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    domain: Annotated[
+        Domain, Field(description="Domain of the authorized operator (e.g., 'groupm.com')")
+    ]
+    brands: Annotated[
+        list[Brand1],
+        Field(
+            description="Brand IDs this operator is authorized for. Use ['*'] for all brands in the portfolio.",
+            min_length=1,
+        ),
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes where this authorization applies. Omit for global authorization.'
+        ),
+    ] = None
+
+
+class Realism(Enum):
+    natural = 'natural'
+    stylized = 'stylized'
+    hyperreal = 'hyperreal'
+    abstract = 'abstract'
+
+
+class ColorTemperature(Enum):
+    warm = 'warm'
+    neutral = 'neutral'
+    cool = 'cool'
+
+
+class Contrast(Enum):
+    low = 'low'
+    medium = 'medium'
+    high = 'high'
+
+
+class DepthOfField(Enum):
+    shallow = 'shallow'
+    medium = 'medium'
+    deep = 'deep'
+
+
+class People(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    age_range: Annotated[str | None, Field(description="Target age range (e.g., '20-35')")] = None
+    diversity: Annotated[
+        str | None, Field(description="Diversity representation (e.g., 'mixed', 'varied')")
+    ] = None
+    mood: Annotated[
+        list[str] | None, Field(description="Mood descriptors (e.g., ['confident', 'relaxed'])")
+    ] = None
+
+
+class ProductFocus(Enum):
+    in_use = 'in-use'
+    isolated = 'isolated'
+    lifestyle = 'lifestyle'
+    detail = 'detail'
+
+
+class Subject(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    people: Annotated[People | None, Field(description='People photography guidelines')] = None
+    product_focus: Annotated[ProductFocus | None, Field(description='How products are shown')] = (
+        None
+    )
+    setting: Annotated[
+        str | None,
+        Field(
+            description="Environmental context for photography (e.g., 'indoor', 'outdoor', 'studio', 'urban', 'nature', 'workplace')"
+        ),
+    ] = None
+
+
+class Framing(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    subject_position: Annotated[
+        str | None,
+        Field(
+            description="Where the subject sits in frame (e.g., 'center', 'center-left', 'rule-of-thirds')"
+        ),
+    ] = None
+    crop_style: Annotated[
+        str | None,
+        Field(
+            description="Cropping convention (e.g., 'waist-up', 'full-body', 'close-up', 'wide')"
+        ),
+    ] = None
+    perspective: Annotated[
+        str | None,
+        Field(description="Camera perspective (e.g., 'eye-level', 'overhead', 'low-angle')"),
+    ] = None
+
+
+class PreferredAspectRatio(RootModel[str]):
+    root: Annotated[str, Field(pattern='^\\d+:\\d+$')]
+
+
+class PhotographyStyle(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    realism: Annotated[Realism | None, Field(description='Level of photographic realism')] = None
+    lighting: Annotated[
+        str | None,
+        Field(
+            description="Lighting style (e.g., 'soft daylight', 'studio', 'golden hour', 'high-key', 'low-key')"
+        ),
+    ] = None
+    color_temperature: Annotated[
+        ColorTemperature | None, Field(description='Overall color temperature of photography')
+    ] = None
+    contrast: Annotated[Contrast | None, Field(description='Contrast level in photography')] = None
+    depth_of_field: Annotated[
+        DepthOfField | None,
+        Field(
+            description='Depth of field preference. shallow: blurred background with subject isolation, deep: everything in focus'
+        ),
+    ] = None
+    subject: Annotated[Subject | None, Field(description='Subject matter guidelines')] = None
+    framing: Annotated[Framing | None, Field(description='Camera framing rules')] = None
+    preferred_aspect_ratios: Annotated[
+        list[PreferredAspectRatio] | None,
+        Field(
+            description="Preferred aspect ratios for brand photography (e.g., '16:9', '4:5', '1:1')"
+        ),
+    ] = None
+    tags: Annotated[list[str] | None, Field(description='Additional style descriptors')] = None
 
 
 class StyleType(Enum):
@@ -335,773 +623,683 @@ class StyleType(Enum):
     photographic_composite = 'photographic_composite'
 
 
+class StrokeStyle(Enum):
+    rounded = 'rounded'
+    square = 'square'
+    mixed = 'mixed'
+    none = 'none'
+
+
 class GraphicStyle(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    style_type: Annotated[StyleType | None, Field(description='Primary graphic style')] = None
+    stroke_style: Annotated[StrokeStyle | None, Field(description='Stroke end/join style')] = None
+    stroke_weight: Annotated[
+        str | None, Field(description="Stroke weight (e.g., '2px', 'thin', 'bold')")
+    ] = None
     corner_radius: Annotated[
         str | None,
         Field(
-            description="Default corner radius for rounded elements (e.g., '12px', '8px', 'sharp')"
+            description="Default corner radius for graphic and illustration elements (e.g., '12px', '8px', 'sharp'). For UI component radii (buttons, cards, inputs), see visual_guidelines.border_radius."
         ),
     ] = None
-    stroke_style: Annotated[StrokeStyle | None, Field(description='Stroke end/join style')] = None
-    stroke_weight: Annotated[
-        str | None, Field(description="Stroke weight (e.g., '2px', 'thin', 'bold')")
-    ] = None
-    style_type: Annotated[StyleType | None, Field(description='Primary graphic style')] = None
     tags: Annotated[list[str] | None, Field(description='Additional style descriptors')] = None
 
 
-class HexColor(RootModel[str]):
-    root: Annotated[str, Field(description='A single hex color value', pattern='^#[0-9A-Fa-f]{6}$')]
+class BorderRadius(AdCPBaseModel):
+    none: Annotated[str | None, Field(description="Explicitly sharp corners (e.g., '0')")] = None
+    default: Annotated[
+        str | None,
+        Field(
+            description="Default border radius for UI components (e.g., '8px', '12px', '0'). For graphic/illustration elements, see graphic_style.corner_radius."
+        ),
+    ] = None
+    small: Annotated[
+        str | None, Field(description="Small border radius for compact elements (e.g., '4px')")
+    ] = None
+    large: Annotated[
+        str | None,
+        Field(description="Large border radius for cards and containers (e.g., '16px', '24px')"),
+    ] = None
+    pill: Annotated[str | None, Field(description="Fully rounded / pill shape (e.g., '999px')")] = (
+        None
+    )
 
 
-class Architecture(Enum):
-    branded_house = 'branded_house'
-    house_of_brands = 'house_of_brands'
-    hybrid = 'hybrid'
+class Elevation(AdCPBaseModel):
+    none: Annotated[str | None, Field(description="No shadow (e.g., 'none')")] = None
+    subtle: Annotated[
+        str | None,
+        Field(description="Subtle shadow for slight lift (e.g., '0 1px 2px rgba(0,0,0,0.05)')"),
+    ] = None
+    card: Annotated[
+        str | None,
+        Field(
+            description="Card-level shadow (e.g., '0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1)')"
+        ),
+    ] = None
+    modal: Annotated[
+        str | None,
+        Field(
+            description="Modal/overlay shadow (e.g., '0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1)')"
+        ),
+    ] = None
 
 
-class CornerStyle(Enum):
-    rounded = 'rounded'
-    square = 'square'
-    mixed = 'mixed'
+class Scale(AdCPBaseModel):
+    xs: Annotated[str | None, Field(description="Extra small spacing (e.g., '4px')")] = None
+    sm: Annotated[str | None, Field(description="Small spacing (e.g., '8px')")] = None
+    md: Annotated[str | None, Field(description="Medium spacing (e.g., '16px')")] = None
+    lg: Annotated[str | None, Field(description="Large spacing (e.g., '24px')")] = None
+    xl: Annotated[str | None, Field(description="Extra large spacing (e.g., '32px')")] = None
+    field_2xl: Annotated[
+        str | None, Field(alias='2xl', description="Section-level spacing (e.g., '48px', '64px')")
+    ] = None
 
 
-class Style1(Enum):
-    outline = 'outline'
-    filled = 'filled'
-    duotone = 'duotone'
-    flat = 'flat'
-    glyph = 'glyph'
-    hand_drawn = 'hand_drawn'
+class Spacing(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    unit: Annotated[
+        str | None,
+        Field(
+            description="Base grid unit this scale was designed from (e.g., '8px', '4px'). Informational — agents should use the named scale values, not compute from this."
+        ),
+    ] = None
+    scale: Annotated[
+        Scale | None, Field(description='Named spacing scale built from the base unit')
+    ] = None
 
 
-class Usage1(AdCPBaseModel):
+class Usage(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    max_per_frame: Annotated[int | None, Field(description='Maximum icons per creative frame')] = (
-        None
-    )
-    size_ratio: Annotated[
-        str | None, Field(description="Icon-to-layout size ratio (e.g., '1:8')")
+    max_per_layout: Annotated[
+        int | None, Field(description='Maximum distinct shapes per layout')
     ] = None
+    overlap_allowed: Annotated[bool | None, Field(description='Whether shapes may overlap')] = None
 
 
-class Iconography(AdCPBaseModel):
+class BrandShapes(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    corner_style: Annotated[
-        CornerStyle | None, Field(description='Corner style for icon paths')
+    primary_shape: Annotated[
+        str | None,
+        Field(description="Primary brand shape (e.g., 'rounded_rectangle', 'circle', 'hexagon')"),
     ] = None
-    stroke_weight: Annotated[
-        str | None, Field(description="Icon stroke weight (e.g., '2px', '1.5px')")
+    secondary_shapes: Annotated[
+        list[str] | None, Field(description='Secondary shapes in the brand vocabulary')
     ] = None
-    style: Annotated[Style1 | None, Field(description='Icon rendering style')] = None
-    usage: Annotated[Usage1 | None, Field(description='Icon usage rules')] = None
-
-
-class KellerType(Enum):
-    master = 'master'
-    sub_brand = 'sub_brand'
-    endorsed = 'endorsed'
-    independent = 'independent'
-
-
-class LocalizedName(RootModel[dict[str, str]]):
-    root: Annotated[dict[str, str], Field(min_length=1)]
+    usage: Annotated[Usage | None, Field(description='Shape usage rules')] = None
 
 
-class Background(Enum):
-    dark_bg = 'dark-bg'
-    light_bg = 'light-bg'
-    transparent_bg = 'transparent-bg'
+class Style1(Enum):
+    outline = 'outline'
+    filled = 'filled'
+    duotone = 'duotone'
+    flat = 'flat'
+    glyph = 'glyph'
+    hand_drawn = 'hand_drawn'
 
 
-class Orientation1(Enum):
+class CornerStyle(Enum):
+    rounded = 'rounded'
     square = 'square'
-    horizontal = 'horizontal'
-    vertical = 'vertical'
-    stacked = 'stacked'
-
-
-class Variant(Enum):
-    primary = 'primary'
-    secondary = 'secondary'
-    icon = 'icon'
-    wordmark = 'wordmark'
-    full_lockup = 'full-lockup'
+    mixed = 'mixed'
 
 
-class Logo(AdCPBaseModel):
+class Usage1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    background: Annotated[
-        Background | None,
-        Field(
-            description='Background compatibility. dark-bg: use on dark backgrounds, light-bg: use on light backgrounds, transparent-bg: has transparent background'
-        ),
-    ] = None
-    height: Annotated[int | None, Field(description='Height in pixels')] = None
-    orientation: Annotated[
-        Orientation1 | None,
-        Field(
-            description='Logo aspect ratio orientation. square: ~1:1, horizontal: wide, vertical: tall, stacked: vertically arranged elements'
-        ),
-    ] = None
-    tags: Annotated[
-        list[str] | None,
-        Field(
-            description='Additional semantic tags for custom categorization beyond the standard orientation, background, and variant fields'
-        ),
-    ] = None
-    url: Annotated[AnyUrl, Field(description='URL to the logo asset')]
-    usage: Annotated[
-        str | None,
-        Field(
-            description="Human-readable description of when to use this logo variant (e.g., 'Primary logo for use on light backgrounds')"
-        ),
-    ] = None
-    variant: Annotated[
-        Variant | None,
-        Field(
-            description='Logo variant type. primary: main logo, secondary: alternative, icon: symbol only, wordmark: text only, full-lockup: complete logo'
-        ),
+    max_per_frame: Annotated[int | None, Field(description='Maximum icons per creative frame')] = (
+        None
+    )
+    size_ratio: Annotated[
+        str | None, Field(description="Icon-to-layout size ratio (e.g., '1:8')")
     ] = None
-    width: Annotated[int | None, Field(description='Width in pixels')] = None
-
-
-class BackgroundContrast(Enum):
-    light_only = 'light_only'
-    dark_only = 'dark_only'
-    any = 'any'
-
 
-class PreferredPosition(Enum):
-    top_left = 'top-left'
-    top_center = 'top-center'
-    top_right = 'top-right'
-    bottom_left = 'bottom-left'
-    bottom_center = 'bottom-center'
-    bottom_right = 'bottom-right'
-    center = 'center'
 
-
-class LogoPlacement(AdCPBaseModel):
+class Iconography(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    background_contrast: Annotated[
-        BackgroundContrast | None, Field(description='Permitted background contrast behind logo')
-    ] = None
-    min_clear_space: Annotated[
-        str | None,
-        Field(
-            description="Minimum clear space around the logo, expressed as a multiple of logo height (e.g., '0.5x', '1x') or fixed value (e.g., '16px')"
-        ),
-    ] = None
-    min_height: Annotated[
-        str | None,
-        Field(description="Minimum logo height to maintain legibility (e.g., '40px', '24px')"),
+    style: Annotated[Style1 | None, Field(description='Icon rendering style')] = None
+    stroke_weight: Annotated[
+        str | None, Field(description="Icon stroke weight (e.g., '2px', '1.5px')")
     ] = None
-    preferred_position: Annotated[
-        PreferredPosition | None, Field(description='Preferred logo position in layouts')
+    corner_style: Annotated[
+        CornerStyle | None, Field(description='Corner style for icon paths')
     ] = None
+    usage: Annotated[Usage1 | None, Field(description='Icon usage rules')] = None
 
 
-class AnimationSpeed(Enum):
-    slow = 'slow'
-    moderate = 'moderate'
-    fast = 'fast'
-
-
-class Pacing(Enum):
-    lingering = 'lingering'
-    moderate = 'moderate'
-    fast_cuts = 'fast_cuts'
-
-
-class TextEntrance(Enum):
-    fade = 'fade'
-    typewriter = 'typewriter'
-    slide_up = 'slide_up'
-    slide_left = 'slide_left'
-    scale = 'scale'
+class GradientStyle(Enum):
+    linear = 'linear'
+    radial = 'radial'
+    conic = 'conic'
     none = 'none'
 
 
-class TransitionStyle(Enum):
-    cut = 'cut'
-    dissolve = 'dissolve'
-    slide = 'slide'
-    wipe = 'wipe'
-    zoom = 'zoom'
-    fade = 'fade'
-
-
-class MotionGuidelines(AdCPBaseModel):
+class Overlays(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    animation_speed: Annotated[
-        AnimationSpeed | None, Field(description='Overall animation pacing')
-    ] = None
-    easing: Annotated[
-        str | None,
-        Field(description="Default easing function (e.g., 'ease-in-out', 'spring', 'linear')"),
-    ] = None
-    kinetic_typography: Annotated[
-        bool | None, Field(description='Whether animated/kinetic typography is allowed')
-    ] = None
-    pacing: Annotated[Pacing | None, Field(description='Overall editing rhythm')] = None
-    tags: Annotated[list[str] | None, Field(description='Additional motion style descriptors')] = (
-        None
-    )
-    text_entrance: Annotated[
-        TextEntrance | None, Field(description='How text enters the frame')
+    gradient_style: Annotated[
+        GradientStyle | None, Field(description='Gradient type for overlays')
     ] = None
-    transition_style: Annotated[
-        TransitionStyle | None, Field(description='Primary transition style between scenes')
+    gradient_direction: Annotated[
+        str | None, Field(description="Gradient direction (e.g., '45deg', 'to-bottom-right')")
     ] = None
+    opacity: Annotated[str | None, Field(description="Overlay opacity (e.g., '70%')")] = None
 
 
-class ColorTemperature(Enum):
-    warm = 'warm'
-    neutral = 'neutral'
-    cool = 'cool'
-
-
-class DepthOfField(Enum):
-    shallow = 'shallow'
-    medium = 'medium'
-    deep = 'deep'
+class Style2(Enum):
+    none = 'none'
+    subtle_grain = 'subtle_grain'
+    noise = 'noise'
+    paper = 'paper'
+    fabric = 'fabric'
+    concrete = 'concrete'
 
 
-class Framing(AdCPBaseModel):
+class Texture(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    crop_style: Annotated[
-        str | None,
-        Field(
-            description="Cropping convention (e.g., 'waist-up', 'full-body', 'close-up', 'wide')"
-        ),
-    ] = None
-    perspective: Annotated[
-        str | None,
-        Field(description="Camera perspective (e.g., 'eye-level', 'overhead', 'low-angle')"),
-    ] = None
-    subject_position: Annotated[
-        str | None,
-        Field(
-            description="Where the subject sits in frame (e.g., 'center', 'center-left', 'rule-of-thirds')"
-        ),
+    style: Annotated[
+        Style2 | None, Field(description='Texture style applied to creative assets')
     ] = None
+    intensity: Annotated[Contrast | None, Field(description='Texture intensity')] = None
 
 
-class PreferredAspectRatio(RootModel[str]):
-    root: Annotated[str, Field(pattern='^\\d+:\\d+$')]
-
-
-class Realism(Enum):
-    natural = 'natural'
-    stylized = 'stylized'
-    hyperreal = 'hyperreal'
-    abstract = 'abstract'
+class TypesAllowedEnum(Enum):
+    solid_color = 'solid_color'
+    gradient = 'gradient'
+    blurred_photo = 'blurred_photo'
+    image = 'image'
+    video = 'video'
+    pattern = 'pattern'
+    transparent = 'transparent'
 
 
-class People(AdCPBaseModel):
+class Backgrounds(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    age_range: Annotated[str | None, Field(description="Target age range (e.g., '20-35')")] = None
-    diversity: Annotated[
-        str | None, Field(description="Diversity representation (e.g., 'mixed', 'varied')")
-    ] = None
-    mood: Annotated[
-        list[str] | None, Field(description="Mood descriptors (e.g., ['confident', 'relaxed'])")
+    types_allowed: Annotated[
+        list[TypesAllowedEnum] | None, Field(description='Permitted background types')
     ] = None
 
 
-class ProductFocus(Enum):
-    in_use = 'in-use'
-    isolated = 'isolated'
-    lifestyle = 'lifestyle'
-    detail = 'detail'
-
-
-class Subject(AdCPBaseModel):
+class CompositionRules(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    people: Annotated[People | None, Field(description='People photography guidelines')] = None
-    product_focus: Annotated[ProductFocus | None, Field(description='How products are shown')] = (
+    overlays: Annotated[Overlays | None, Field(description='Graphic overlay rules')] = None
+    texture: Annotated[Texture | None, Field(description='Texture treatment rules')] = None
+    backgrounds: Annotated[Backgrounds | None, Field(description='Background treatment rules')] = (
         None
     )
-    setting: Annotated[
-        str | None,
-        Field(
-            description="Environmental context for photography (e.g., 'indoor', 'outdoor', 'studio', 'urban', 'nature', 'workplace')"
-        ),
-    ] = None
 
 
-class PhotographyStyle(AdCPBaseModel):
+class Colorway(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    color_temperature: Annotated[
-        ColorTemperature | None, Field(description='Overall color temperature of photography')
-    ] = None
-    contrast: Annotated[Intensity | None, Field(description='Contrast level in photography')] = None
-    depth_of_field: Annotated[
-        DepthOfField | None,
-        Field(
-            description='Depth of field preference. shallow: blurred background with subject isolation, deep: everything in focus'
-        ),
+    name: Annotated[str, Field(description="Colorway name (e.g., 'primary', 'inverted', 'subtle')")]
+    foreground: HexColor
+    background: HexColor
+    accent: HexColor | None = None
+    border: HexColor | None = None
+    cta_foreground: Annotated[
+        HexColor | None, Field(description='CTA text/icon color, if different from foreground')
     ] = None
-    framing: Annotated[Framing | None, Field(description='Camera framing rules')] = None
-    lighting: Annotated[
-        str | None,
-        Field(
-            description="Lighting style (e.g., 'soft daylight', 'studio', 'golden hour', 'high-key', 'low-key')"
-        ),
+    cta_background: Annotated[
+        HexColor | None, Field(description='CTA button/container color, if different from accent')
     ] = None
-    preferred_aspect_ratios: Annotated[
-        list[PreferredAspectRatio] | None,
+    channels: Annotated[
+        list[str] | None,
         Field(
-            description="Preferred aspect ratios for brand photography (e.g., '16:9', '4:5', '1:1')"
+            description="Channels or contexts where this colorway applies (e.g., 'online', 'print', 'pos', 'social', 'outdoor'). Omit for universal colorways."
         ),
     ] = None
-    realism: Annotated[Realism | None, Field(description='Level of photographic realism')] = None
-    subject: Annotated[Subject | None, Field(description='Subject matter guidelines')] = None
-    tags: Annotated[list[str] | None, Field(description='Additional style descriptors')] = None
-
-
-class AgenticCheckout(AdCPBaseModel):
-    endpoint: Annotated[AnyUrl, Field(description='Base URL for checkout session API')]
-    spec: Annotated[
-        Literal['openai_agentic_checkout_v1'], Field(description='Checkout API specification')
-    ]
-    supported_payment_providers: Annotated[
-        list[str] | None, Field(description='Payment providers supported by this checkout endpoint')
-    ] = None
-
-
-class FeedFormat(Enum):
-    google_merchant_center = 'google_merchant_center'
-    facebook_catalog = 'facebook_catalog'
-    openai_product_feed = 'openai_product_feed'
-    custom = 'custom'
 
 
-class UpdateFrequency(Enum):
-    realtime = 'realtime'
-    hourly = 'hourly'
-    daily = 'daily'
-    weekly = 'weekly'
+class TextTransform(Enum):
+    none = 'none'
+    uppercase = 'uppercase'
+    lowercase = 'lowercase'
+    capitalize = 'capitalize'
 
 
-class ProductCatalog(AdCPBaseModel):
+class TypeScaleEntry(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    agentic_checkout: Annotated[
-        AgenticCheckout | None, Field(description='Agentic checkout endpoint configuration')
-    ] = None
-    categories: Annotated[
-        list[str] | None, Field(description='Product categories available in the catalog')
+    font: Annotated[
+        str | None,
+        Field(
+            description="Font reference. Use a key from the fonts object (e.g., 'primary', 'secondary') to reference a defined font role, or a literal CSS font-family string as a fallback."
+        ),
     ] = None
-    feed_format: Annotated[FeedFormat | None, Field(description='Format of the product feed')] = (
+    size: Annotated[str | None, Field(description="Font size (e.g., '48px', '2rem')")] = None
+    weight: Annotated[str | None, Field(description="Font weight (e.g., '700', 'bold')")] = None
+    line_height: Annotated[str | None, Field(description="Line height (e.g., '1.2', '56px')")] = (
         None
     )
-    feed_url: Annotated[AnyUrl, Field(description='URL to product catalog feed')]
-    last_updated: Annotated[
-        AwareDatetime | None, Field(description='When the product catalog was last updated')
-    ] = None
-    update_frequency: Annotated[
-        UpdateFrequency | None, Field(description='How frequently the product catalog is updated')
+    letter_spacing: Annotated[
+        str | None, Field(description="Letter spacing (e.g., '-0.02em', '0.5px')")
     ] = None
+    text_transform: Annotated[TextTransform | None, Field(description='Text transformation')] = None
 
 
-class Store(Enum):
-    apple = 'apple'
-    google = 'google'
-    amazon = 'amazon'
-    roku = 'roku'
-    samsung = 'samsung'
-    lg = 'lg'
-    other = 'other'
+class TransitionStyle(Enum):
+    cut = 'cut'
+    dissolve = 'dissolve'
+    slide = 'slide'
+    wipe = 'wipe'
+    zoom = 'zoom'
+    fade = 'fade'
 
 
-class Type2(Enum):
-    website = 'website'
-    mobile_app = 'mobile_app'
-    ctv_app = 'ctv_app'
-    desktop_app = 'desktop_app'
-    dooh = 'dooh'
-    podcast = 'podcast'
-    radio = 'radio'
-    streaming_audio = 'streaming_audio'
+class AnimationSpeed(Enum):
+    slow = 'slow'
+    moderate = 'moderate'
+    fast = 'fast'
 
 
-class Property(AdCPBaseModel):
+class TextEntrance(Enum):
+    fade = 'fade'
+    typewriter = 'typewriter'
+    slide_up = 'slide_up'
+    slide_left = 'slide_left'
+    scale = 'scale'
+    none = 'none'
+
+
+class Pacing(Enum):
+    lingering = 'lingering'
+    moderate = 'moderate'
+    fast_cuts = 'fast_cuts'
+
+
+class MotionGuidelines(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    identifier: Annotated[
-        str,
-        Field(
-            description='Property identifier - domain for websites, bundle ID for apps',
-            min_length=1,
-        ),
-    ]
-    primary: Annotated[
-        bool | None, Field(description='Whether this is the primary property for the brand')
-    ] = False
-    region: Annotated[
+    transition_style: Annotated[
+        TransitionStyle | None, Field(description='Primary transition style between scenes')
+    ] = None
+    animation_speed: Annotated[
+        AnimationSpeed | None, Field(description='Overall animation pacing')
+    ] = None
+    easing: Annotated[
         str | None,
-        Field(
-            description="ISO 3166-1 alpha-2 country code or 'global'", pattern='^([A-Z]{2}|global)$'
-        ),
+        Field(description="Default easing function (e.g., 'ease-in-out', 'spring', 'linear')"),
     ] = None
-    store: Annotated[Store | None, Field(description='App store for mobile/CTV apps')] = None
-    type: Annotated[Type2, Field(description='Property type')]
+    text_entrance: Annotated[
+        TextEntrance | None, Field(description='How text enters the frame')
+    ] = None
+    pacing: Annotated[Pacing | None, Field(description='Overall editing rhythm')] = None
+    kinetic_typography: Annotated[
+        bool | None, Field(description='Whether animated/kinetic typography is allowed')
+    ] = None
+    tags: Annotated[list[str] | None, Field(description='Additional motion style descriptors')] = (
+        None
+    )
+
+
+class PreferredPosition(Enum):
+    top_left = 'top-left'
+    top_center = 'top-center'
+    top_right = 'top-right'
+    bottom_left = 'bottom-left'
+    bottom_center = 'bottom-center'
+    bottom_right = 'bottom-right'
+    center = 'center'
 
 
-class TextTransform(Enum):
-    none = 'none'
-    uppercase = 'uppercase'
-    lowercase = 'lowercase'
-    capitalize = 'capitalize'
+class BackgroundContrast(Enum):
+    light_only = 'light_only'
+    dark_only = 'dark_only'
+    any = 'any'
 
 
-class TypeScaleEntry(AdCPBaseModel):
+class LogoPlacement(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    font: Annotated[
+    preferred_position: Annotated[
+        PreferredPosition | None, Field(description='Preferred logo position in layouts')
+    ] = None
+    min_clear_space: Annotated[
         str | None,
         Field(
-            description="Font family reference (e.g., 'primary', 'secondary', or a specific family name)"
+            description="Minimum clear space around the logo, expressed as a multiple of logo height (e.g., '0.5x', '1x') or fixed value (e.g., '16px')"
         ),
     ] = None
-    letter_spacing: Annotated[
-        str | None, Field(description="Letter spacing (e.g., '-0.02em', '0.5px')")
+    min_height: Annotated[
+        str | None,
+        Field(description="Minimum logo height to maintain legibility (e.g., '40px', '24px')"),
+    ] = None
+    background_contrast: Annotated[
+        BackgroundContrast | None, Field(description='Permitted background contrast behind logo')
     ] = None
-    line_height: Annotated[str | None, Field(description="Line height (e.g., '1.2', '56px')")] = (
-        None
-    )
-    size: Annotated[str | None, Field(description="Font size (e.g., '48px', '2rem')")] = None
-    text_transform: Annotated[TextTransform | None, Field(description='Text transformation')] = None
-    weight: Annotated[str | None, Field(description="Font weight (e.g., '700', 'bold')")] = None
 
 
-class TypeScale(AdCPBaseModel):
-    base_width: Annotated[
-        str | None,
-        Field(
-            description="Reference canvas width these sizes were designed for (e.g., '1080px'). Generative systems should scale proportionally for other canvas sizes."
-        ),
-    ] = None
-    body: TypeScaleEntry | None = None
-    caption: TypeScaleEntry | None = None
-    cta: TypeScaleEntry | None = None
-    heading: TypeScaleEntry | None = None
-    subheading: TypeScaleEntry | None = None
+class Type1(Enum):
+    border = 'border'
+    divider = 'divider'
+    frame = 'frame'
+    watermark = 'watermark'
+    pattern = 'pattern'
+    texture_overlay = 'texture_overlay'
+    decorative = 'decorative'
 
 
-class BrandDiscovery2(AdCPBaseModel):
+class Orientation1(Enum):
+    horizontal = 'horizontal'
+    vertical = 'vertical'
+    any = 'any'
+
+
+class GraphicElement(AdCPBaseModel):
     model_config = ConfigDict(
-        extra='forbid',
+        extra='allow',
     )
-    field_schema: Annotated[str | None, Field(alias='$schema')] = None
-    house: Annotated[Domain, Field(description='House domain to fetch brand portfolio from')]
-    last_updated: AwareDatetime | None = None
-    note: str | None = None
-    region: Annotated[
-        str | None,
+    name: Annotated[
+        str,
         Field(
-            description='ISO 3166-1 alpha-2 country code if this is a regional domain',
-            pattern='^[A-Z]{2}$',
+            description="Element name (e.g., 'Paper Tear', 'Brand Watermark', 'Section Divider')"
         ),
+    ]
+    type: Annotated[Type1 | None, Field(description='Element type')] = None
+    description: Annotated[str | None, Field(description='How the element is used in layouts')] = (
+        None
+    )
+    orientation: Annotated[
+        Orientation1 | None, Field(description='Preferred orientation when used in layouts')
+    ] = None
+    colors: Annotated[
+        list[HexColor] | None, Field(description='Colors this element may appear in')
     ] = None
+    max_per_layout: Annotated[int | None, Field(description='Maximum instances per layout')] = None
+
+
+class Type2(Enum):
+    icon_set = 'icon_set'
+    illustration_system = 'illustration_system'
+    image_library = 'image_library'
+    video_library = 'video_library'
+    template_library = 'template_library'
 
 
 class Palette(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    name: Annotated[str, Field(description='Palette name')]
     colors: Annotated[
         dict[str, HexColor], Field(description='Map of role names to hex color values')
     ]
-    name: Annotated[str, Field(description='Palette name')]
 
 
 class ColorGuide(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    palettes: Annotated[
-        list[Palette] | None,
-        Field(description='Named color palettes mapping roles to specific colors'),
-    ] = None
     roles: Annotated[
         list[str] | None,
         Field(
             description='Named color roles used in the library (e.g., base, shadow_1, highlight_1, stroke)'
         ),
     ] = None
+    palettes: Annotated[
+        list[Palette] | None,
+        Field(description='Named color palettes mapping roles to specific colors'),
+    ] = None
 
 
 class AssetLibrary(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    name: Annotated[str, Field(description='Display name of the asset library')]
+    type: Annotated[Type2 | None, Field(description='Type of asset library')] = None
+    url: Annotated[AnyUrl, Field(description='URL to the asset library (for human access)')]
+    description: Annotated[
+        str | None, Field(description='Description of the library contents and usage')
+    ] = None
     color_guide: Annotated[
         ColorGuide | None,
         Field(description='Color guide for the asset library defining roles and palettes'),
     ] = None
-    description: Annotated[
-        str | None, Field(description='Description of the library contents and usage')
-    ] = None
-    name: Annotated[str, Field(description='Display name of the asset library')]
-    type: Annotated[Type | None, Field(description='Type of asset library')] = None
-    url: Annotated[AnyUrl, Field(description='URL to the asset library (for human access)')]
 
 
-class AuthorizedOperator(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    brands: Annotated[
-        list[Brand1],
-        Field(
-            description="Brand IDs this operator is authorized for. Use ['*'] for all brands in the portfolio.",
-            min_length=1,
-        ),
-    ]
-    countries: Annotated[
-        list[Country] | None,
+class TypeScale(AdCPBaseModel):
+    base_width: Annotated[
+        str | None,
         Field(
-            description='ISO 3166-1 alpha-2 country codes where this authorization applies. Omit for global authorization.'
+            description="Reference canvas width these sizes were designed for (e.g., '1080px'). Generative systems should scale proportionally for other canvas sizes."
         ),
     ] = None
-    domain: Annotated[
-        Domain, Field(description="Domain of the authorized operator (e.g., 'groupm.com')")
-    ]
+    heading: TypeScaleEntry | None = None
+    subheading: TypeScaleEntry | None = None
+    body: TypeScaleEntry | None = None
+    caption: TypeScaleEntry | None = None
+    cta: TypeScaleEntry | None = None
 
 
-class Collection(AdCPBaseModel):
+class VisualGuidelines(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    collection_id: Annotated[
-        str | None,
-        Field(description="Collection identifier as used in the seller's get_products responses"),
+    photography: PhotographyStyle | None = None
+    graphic_style: GraphicStyle | None = None
+    shapes: BrandShapes | None = None
+    iconography: Iconography | None = None
+    composition: CompositionRules | None = None
+    border_radius: BorderRadius | None = None
+    elevation: Elevation | None = None
+    spacing: Spacing | None = None
+    graphic_elements: Annotated[
+        list[GraphicElement] | None,
+        Field(
+            description='Reusable decorative elements that are part of the brand visual identity (e.g., torn paper edges, watermarks, dividers)'
+        ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable collection name')]
-    role: Annotated[
-        talent_role.TalentRole | None, Field(description="This person's role on the collection")
+    motion: MotionGuidelines | None = None
+    logo_placement: LogoPlacement | None = None
+    colorways: Annotated[
+        list[Colorway] | None,
+        Field(description='Named color pairings for consistent foreground/background combinations'),
     ] = None
-    seller_agent_url: Annotated[
-        AnyUrl | None,
+    type_scale: Annotated[
+        TypeScale | None,
         Field(
-            description='URL of the sales agent that sells inventory for this collection. Buyer agents can query this agent for collection products.'
+            description='Typography scale defining sizes and weights for different text roles. When sizes are in px, use base_width to indicate the reference canvas.'
         ),
     ] = None
-
-
-class Tagline(RootModel[list[LocalizedName]]):
-    root: Annotated[
-        list[LocalizedName],
-        Field(description='Localized taglines with BCP 47 locale codes', min_length=1),
-    ]
-
-
-class Colorway(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    accent: HexColor | None = None
-    background: HexColor
-    border: HexColor | None = None
-    channels: Annotated[
-        list[str] | None,
+    asset_libraries: Annotated[
+        list[AssetLibrary] | None,
         Field(
-            description="Channels or contexts where this colorway applies (e.g., 'online', 'print', 'pos', 'social', 'outdoor'). Omit for universal colorways."
+            description='References to managed asset libraries (icon sets, illustration systems, image collections). URLs are intended for human access; agent-facing DAM integration is under investigation.'
         ),
     ] = None
-    cta_background: Annotated[
-        HexColor | None, Field(description='CTA button/container color, if different from accent')
-    ] = None
-    cta_foreground: Annotated[
-        HexColor | None, Field(description='CTA text/icon color, if different from foreground')
+    restrictions: Annotated[
+        list[str] | None,
+        Field(
+            description="Visual prohibitions and guardrails (e.g., 'Never use black backgrounds', 'Do not crop the logo', 'No stock photography of people on phones')"
+        ),
     ] = None
-    foreground: HexColor
-    name: Annotated[str, Field(description="Colorway name (e.g., 'primary', 'inverted', 'subtle')")]
 
 
 class Contact(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    domain: Domain | None = None
-    email: Annotated[EmailStr | None, Field(max_length=255)] = None
     name: Annotated[str, Field(max_length=255, min_length=1)]
+    email: Annotated[EmailStr | None, Field(max_length=255)] = None
+    domain: Domain | None = None
 
 
-class GraphicElement(AdCPBaseModel):
+class BrandDiscovery2(AdCPBaseModel):
     model_config = ConfigDict(
-        extra='allow',
-    )
-    colors: Annotated[
-        list[HexColor] | None, Field(description='Colors this element may appear in')
-    ] = None
-    description: Annotated[str | None, Field(description='How the element is used in layouts')] = (
-        None
+        extra='forbid',
     )
-    max_per_layout: Annotated[int | None, Field(description='Maximum instances per layout')] = None
-    name: Annotated[
-        str,
+    field_schema: Annotated[str | None, Field(alias='$schema')] = None
+    house: Annotated[Domain, Field(description='House domain to fetch brand portfolio from')]
+    region: Annotated[
+        str | None,
         Field(
-            description="Element name (e.g., 'Paper Tear', 'Brand Watermark', 'Section Divider')"
+            description='ISO 3166-1 alpha-2 country code if this is a regional domain',
+            pattern='^[A-Z]{2}$',
         ),
-    ]
-    orientation: Annotated[
-        Orientation | None, Field(description='Preferred orientation when used in layouts')
     ] = None
-    type: Annotated[Type1 | None, Field(description='Element type')] = None
+    note: str | None = None
+    last_updated: AwareDatetime | None = None
 
 
-class House(AdCPBaseModel):
+class Collection(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    architecture: Annotated[
-        Architecture | None,
+    collection_id: Annotated[
+        str | None,
+        Field(description="Collection identifier as used in the seller's get_products responses"),
+    ] = None
+    name: Annotated[str, Field(description='Human-readable collection name')]
+    role: Annotated[
+        talent_role.TalentRole | None, Field(description="This person's role on the collection")
+    ] = None
+    seller_agent_url: Annotated[
+        AnyUrl | None,
         Field(
-            description='Brand architecture model: branded_house (Google), house_of_brands (P&G), hybrid (Nike)'
+            description='URL of the sales agent that sells inventory for this collection. Buyer agents can query this agent for collection products.'
         ),
     ] = None
-    domain: Annotated[Domain, Field(description="The house's domain where brand.json is hosted")]
-    name: Annotated[str, Field(description='Primary display name of the house', min_length=1)]
-    names: Annotated[
-        list[LocalizedName] | None,
-        Field(description='Localized house names including legal name, stock symbol, etc.'),
-    ] = None
 
 
 class RightsAgent(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    url: Annotated[AnyUrl, Field(description='Rights agent MCP endpoint URL')]
+    id: Annotated[str, Field(description='Agent identifier', pattern='^[a-z0-9_]+$')]
     available_uses: Annotated[
         list[right_use.RightUse],
         Field(description='Rights uses available for licensing through this agent', min_length=1),
     ]
-    countries: Annotated[
-        list[Country] | None,
-        Field(description='Countries where rights are available (ISO 3166-1 alpha-2)'),
-    ] = None
-    id: Annotated[str, Field(description='Agent identifier', pattern='^[a-z0-9_]+$')]
     right_types: Annotated[
         list[right_type.RightType] | None,
         Field(description='Types of rights available', min_length=1),
     ] = None
-    url: Annotated[AnyUrl, Field(description='Rights agent MCP endpoint URL')]
+    countries: Annotated[
+        list[Country] | None,
+        Field(description='Countries where rights are available (ISO 3166-1 alpha-2)'),
+    ] = None
 
 
-class VisualGuidelines(AdCPBaseModel):
+class BrandAgentEntry(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_libraries: Annotated[
-        list[AssetLibrary] | None,
+    type: Annotated[
+        brand_agent_type.BrandAgentType, Field(description='Functional role of this agent')
+    ]
+    url: Annotated[AnyUrl, Field(description='Agent endpoint URL (MCP or A2A)')]
+    id: Annotated[
+        str,
         Field(
-            description='References to managed asset libraries (icon sets, illustration systems, image collections). URLs are intended for human access; agent-facing DAM integration is under investigation.'
+            description='Agent identifier (useful for logging, multi-tenant platforms)',
+            max_length=100,
+            pattern='^[a-z0-9_]+$',
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this agent's capabilities or scope",
+            max_length=500,
         ),
     ] = None
-    colorways: Annotated[
-        list[Colorway] | None,
-        Field(description='Named color pairings for consistent foreground/background combinations'),
-    ] = None
-    composition: CompositionRules | None = None
-    graphic_elements: Annotated[
-        list[GraphicElement] | None,
+    jwks_uri: Annotated[
+        AnyUrl | None,
         Field(
-            description='Reusable decorative elements that are part of the brand visual identity (e.g., torn paper edges, watermarks, dividers)'
+            description="HTTPS URL of the agent's JWKS (RFC 7517) containing public keys used to verify artifacts this agent signs or requests it sends. Verified artifacts include signed governance_context tokens (for governance agents) and RFC 9421 HTTP Signatures on outgoing requests (for any agent). When absent, verifiers MUST default to /.well-known/jwks.json on the origin of `url`. Keys are identified by `kid` in the JWS header or RFC 9421 `keyid` parameter; JWKS MAY contain multiple keys to support rotation and per-purpose separation via `key_ops` and `use`."
         ),
     ] = None
-    graphic_style: GraphicStyle | None = None
-    iconography: Iconography | None = None
-    logo_placement: LogoPlacement | None = None
-    motion: MotionGuidelines | None = None
-    photography: PhotographyStyle | None = None
-    restrictions: Annotated[
-        list[str] | None,
+    scope: Annotated[
+        list[ScopeEnum] | None,
         Field(
-            description="Visual prohibitions and guardrails (e.g., 'Never use black backgrounds', 'Do not crop the logo', 'No stock photography of people on phones')"
+            description='For governance agents: which governance responsibilities this agent handles. Values correspond to compliance specialisms. When a house declares multiple governance agents, scope distinguishes them. When absent on a governance agent, the agent is assumed to handle all governance categories.'
         ),
     ] = None
-    shapes: BrandShapes | None = None
-    type_scale: Annotated[
-        TypeScale | None,
+    available_uses: Annotated[
+        list[right_use.RightUse] | None,
+        Field(description='For rights agents: rights uses available for licensing', min_length=1),
+    ] = None
+    right_types: Annotated[
+        list[right_type.RightType] | None,
+        Field(description='For rights agents: types of rights available', min_length=1),
+    ] = None
+    countries: Annotated[
+        list[Country] | None,
         Field(
-            description='Typography scale defining sizes and weights for different text roles. When sizes are in px, use base_width to indicate the reference canvas.'
+            description='ISO 3166-1 alpha-2 country codes where this agent operates. Omit for global scope.'
         ),
     ] = None
 
 
+class Agents(RootModel[list[BrandAgentEntry]]):
+    root: Annotated[
+        list[BrandAgentEntry],
+        Field(
+            description='Agents declared by this brand or house. One agent per type.', max_length=20
+        ),
+    ]
+
+
 class BrandDiscovery3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
     field_schema: Annotated[str | None, Field(alias='$schema')] = None
-    brand_agent: BrandAgent
+    version: str | None = None
+    agents: Agents
+    brand_agent: Annotated[BrandAgent | None, Field(deprecated=True)] = None
     contact: Contact | None = None
     last_updated: AwareDatetime | None = None
+
+
+class BrandDiscovery4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    field_schema: Annotated[str | None, Field(alias='$schema')] = None
     version: str | None = None
+    agents: Agents | None = None
+    brand_agent: Annotated[BrandAgent, Field(deprecated=True)]
+    contact: Contact | None = None
+    last_updated: AwareDatetime | None = None
 
 
 class Brand(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    assets: Annotated[list[Asset] | None, Field(description='Brand asset library')] = None
-    avatar: Annotated[Avatar | None, Field(description='Visual avatar configuration')] = None
-    brand_agent: Annotated[
-        BrandAgent | None, Field(description='Brand agent that provides dynamic brand data via MCP')
-    ] = None
-    collections: Annotated[
-        list[Collection] | None,
-        Field(
-            description="Collections this person or brand is associated with. Enables bidirectional linking: a collection's talent references brand.json via brand_url, and brand.json links back to collections."
-        ),
-    ] = None
-    colors: Colors | None = None
-    contact: Annotated[Contact1 | None, Field(description='Brand-level contact information')] = None
-    description: Annotated[str | None, Field(description='Brand description')] = None
-    disclaimers: Annotated[
-        list[Disclaimer] | None, Field(description='Legal disclaimers for creatives')
-    ] = None
-    fonts: Fonts | None = None
     id: Annotated[
         BrandId, Field(description='Brand identifier within the house. House chooses this ID.')
     ]
-    industries: Annotated[
-        list[advertiser_industry.AdvertiserIndustry] | None,
-        Field(
-            description="Brand industries (e.g., ['automotive'] or ['healthcare.pharmaceutical', 'cpg'] for a consumer health company). Describes what the company does — not what regulatory regimes apply (use policy_categories for that). When create_media_buy omits advertiser_industry, sellers may infer from this field.",
-            min_length=1,
-        ),
+    url: Annotated[
+        AnyUrl | None, Field(description='Primary brand URL for context and asset discovery')
     ] = None
-    keller_type: KellerType | None = None
-    logos: Annotated[list[Logo] | None, Field(description='Brand logo assets')] = None
     names: Annotated[
         list[LocalizedName],
         Field(
@@ -1109,18 +1307,24 @@ class Brand(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    keller_type: KellerType | None = None
     parent_brand: Annotated[
         BrandId | None, Field(description='Parent brand ID for sub-brands and endorsed brands')
     ] = None
-    privacy_policy_url: Annotated[
-        AnyUrl | None, Field(description="URL to the brand's privacy policy")
-    ] = None
-    product_catalog: ProductCatalog | None = None
-    properties: Annotated[
-        list[Property] | None, Field(description='Digital properties owned by this brand')
+    description: Annotated[str | None, Field(description='Brand description')] = None
+    industries: Annotated[
+        list[str] | None,
+        Field(
+            description="Brand industries (e.g., ['automotive'] or ['pharmaceutical', 'cpg'] for a consumer health company). Describes what the company does — not what regulatory regimes apply (use policy_categories for that).",
+            min_length=1,
+        ),
     ] = None
-    rights_agent: Annotated[
-        RightsAgent | None, Field(description='Rights licensing agent for this brand')
+    target_audience: Annotated[str | None, Field(description='Primary target audience')] = None
+    logos: Annotated[list[Logo] | None, Field(description='Brand logo assets')] = None
+    colors: Colors | None = None
+    fonts: Fonts | None = None
+    tone: Annotated[
+        str | Tone | None, Field(description='Brand voice and messaging tone guidelines')
     ] = None
     tagline: Annotated[
         str | Tagline | None,
@@ -1128,124 +1332,236 @@ class Brand(AdCPBaseModel):
             description='Brand tagline or slogan. Accepts a plain string or a localized array matching the names pattern.'
         ),
     ] = None
-    target_audience: Annotated[str | None, Field(description='Primary target audience')] = None
-    tone: Annotated[
-        str | Tone | None, Field(description='Brand voice and messaging tone guidelines')
+    assets: Annotated[list[Asset] | None, Field(description='Brand asset library')] = None
+    properties: Annotated[
+        list[Property] | None,
+        Field(
+            description='Digital properties associated with this brand — owned, managed, or represented'
+        ),
     ] = None
-    url: Annotated[
-        AnyUrl | None, Field(description='Primary brand URL for context and asset discovery')
+    product_catalog: ProductCatalog | None = None
+    privacy_policy_url: Annotated[
+        AnyUrl | None, Field(description="URL to the brand's privacy policy")
     ] = None
-    visual_guidelines: Annotated[
-        VisualGuidelines | None,
-        Field(description='Structured visual rules for generative creative systems'),
+    disclaimers: Annotated[
+        list[Disclaimer] | None, Field(description='Legal disclaimers for creatives')
     ] = None
     voice_synthesis: Annotated[
         VoiceSynthesis | None,
         Field(description='TTS voice synthesis configuration for AI-generated audio'),
     ] = None
+    avatar: Annotated[Avatar | None, Field(description='Visual avatar configuration')] = None
+    visual_guidelines: Annotated[
+        VisualGuidelines | None,
+        Field(description='Structured visual rules for generative creative systems'),
+    ] = None
+    agents: Annotated[
+        Agents | None,
+        Field(
+            description='Agents authorized to act on behalf of this brand. Overrides house-level agents of the same type.'
+        ),
+    ] = None
+    brand_agent: Annotated[
+        BrandAgent | None,
+        Field(
+            deprecated=True,
+            description="Deprecated: use agents array with type 'brand' instead. Brand agent that provides dynamic brand data via MCP.",
+        ),
+    ] = None
+    rights_agent: Annotated[
+        RightsAgent | None,
+        Field(
+            deprecated=True,
+            description="Deprecated: use agents array with type 'rights' instead. Rights licensing agent for this brand.",
+        ),
+    ] = None
+    contact: Annotated[Contact1 | None, Field(description='Brand-level contact information')] = None
+    collections: Annotated[
+        list[Collection] | None,
+        Field(
+            description="Collections this person or brand is associated with. Enables bidirectional linking: a collection's talent references brand.json via brand_url, and brand.json links back to collections."
+        ),
+    ] = None
 
 
-class BrandDiscovery4(AdCPBaseModel):
+class House(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    domain: Annotated[Domain, Field(description="The house's domain where brand.json is hosted")]
+    name: Annotated[str, Field(description='Primary display name of the house', min_length=1)]
+    names: Annotated[
+        list[LocalizedName] | None,
+        Field(description='Localized house names including legal name, stock symbol, etc.'),
+    ] = None
+    architecture: Annotated[
+        Architecture | None,
+        Field(
+            description='Brand architecture model: branded_house (Google), house_of_brands (P&G), hybrid (Nike)'
+        ),
+    ] = None
+    agents: Annotated[
+        Agents | None,
+        Field(
+            description='House-level agents that apply to all brands unless overridden at the brand level'
+        ),
+    ] = None
+
+
+class BrandDiscovery5(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
     field_schema: Annotated[str | None, Field(alias='$schema')] = None
+    version: str | None = None
+    house: House
+    brands: Annotated[list[Brand], Field(description='Brands owned by this house', min_length=1)]
+    contact: Contact | None = None
     authorized_operators: Annotated[
         list[AuthorizedOperator] | None,
         Field(
             description="Entities authorized to represent brands from this house. Third parties (sellers, platforms) can verify an operator's authorization by checking this list. Operators are identified by domain."
         ),
     ] = None
-    brands: Annotated[list[Brand], Field(description='Brands owned by this house', min_length=1)]
-    contact: Contact | None = None
-    house: House
-    last_updated: AwareDatetime | None = None
     trademarks: list[Trademark] | None = None
-    version: str | None = None
+    last_updated: AwareDatetime | None = None
 
 
 class BrandDiscovery(
-    RootModel[BrandDiscovery1 | BrandDiscovery2 | BrandDiscovery3 | BrandDiscovery4]
+    RootModel[
+        BrandDiscovery1 | BrandDiscovery2 | BrandDiscovery3 | BrandDiscovery4 | BrandDiscovery5
+    ]
 ):
     root: Annotated[
-        BrandDiscovery1 | BrandDiscovery2 | BrandDiscovery3 | BrandDiscovery4,
+        BrandDiscovery1 | BrandDiscovery2 | BrandDiscovery3 | BrandDiscovery4 | BrandDiscovery5,
         Field(
             description='Brand identity and discovery file. Hosted at /.well-known/brand.json on house domains. Contains the full brand portfolio with identity, creative assets, and digital properties. Brands are identified by house + brand_id (like properties are identified by publisher + property_id). Supports variants: house portfolio (full brand data), brand agent (agent provides brand info via MCP), house redirect (pointer to house domain), or authoritative location redirect.',
             examples=[
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/brand.json',
+                    '$schema': '/schemas/latest/brand.json',
                     'authoritative_location': 'https://adcontextprotocol.org/brand/abc123/brand.json',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/brand.json',
+                    '$schema': '/schemas/latest/brand.json',
                     'house': 'nikeinc.com',
                     'note': 'Redirect to house domain for full brand portfolio',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/brand.json',
-                    'brand_agent': {'id': 'acme_brand_agent', 'url': 'https://agent.acme.com/mcp'},
+                    '$schema': '/schemas/latest/brand.json',
                     'version': '1.0',
+                    'agents': [
+                        {'type': 'brand', 'url': 'https://agent.acme.com/mcp', 'id': 'acme_brand'}
+                    ],
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/brand.json',
+                    '$schema': '/schemas/latest/brand.json',
+                    'version': '1.0',
+                    'house': {
+                        'domain': 'pg.com',
+                        'name': 'Procter & Gamble',
+                        'architecture': 'house_of_brands',
+                        'agents': [
+                            {
+                                'type': 'governance',
+                                'url': 'https://agents.pg.com/governance',
+                                'id': 'pg_governance',
+                                'description': 'Brand safety and compliance for all P&G brands',
+                                'jwks_uri': 'https://agents.pg.com/.well-known/jwks.json',
+                                'scope': ['spend_authority', 'delivery_monitor', 'brand_safety'],
+                            }
+                        ],
+                    },
                     'brands': [
                         {
-                            'colors': {'primary': '#FF6600', 'secondary': '#0066CC'},
-                            'contact': {'email': 'brands@pg.com'},
-                            'description': 'Laundry detergent brand',
                             'id': 'tide',
-                            'industries': ['cpg'],
+                            'url': 'https://tide.com',
+                            'names': [{'en_US': 'Tide'}, {'es_MX': 'Tide'}, {'zh_CN': '汰渍'}],
                             'keller_type': 'master',
+                            'industries': ['cpg'],
+                            'description': 'Laundry detergent brand',
                             'logos': [
                                 {
-                                    'background': 'transparent-bg',
-                                    'orientation': 'square',
                                     'url': 'https://cdn.pg.com/tide/logo-square.png',
-                                    'usage': 'Primary logo for general use',
+                                    'orientation': 'square',
+                                    'background': 'transparent-bg',
                                     'variant': 'primary',
+                                    'usage': 'Primary logo for general use',
                                 },
                                 {
-                                    'background': 'dark-bg',
-                                    'orientation': 'horizontal',
                                     'url': 'https://cdn.pg.com/tide/logo-horizontal-dark.png',
-                                    'usage': 'Full lockup for dark backgrounds',
+                                    'orientation': 'horizontal',
+                                    'background': 'dark-bg',
                                     'variant': 'full-lockup',
+                                    'usage': 'Full lockup for dark backgrounds',
                                 },
                             ],
-                            'names': [{'en_US': 'Tide'}, {'es_MX': 'Tide'}, {'zh_CN': '汰渍'}],
-                            'properties': [
-                                {'identifier': 'tide.com', 'primary': True, 'type': 'website'},
-                                {
-                                    'identifier': 'com.pg.tide',
-                                    'store': 'apple',
-                                    'type': 'mobile_app',
-                                },
-                            ],
-                            'tagline': [{'en_US': "Tide's In, Dirt's Out"}],
+                            'colors': {
+                                'primary': '#FF6600',
+                                'secondary': '#0066CC',
+                                'background': '#FFFFFF',
+                                'text': '#1A1A1A',
+                                'heading': '#FF6600',
+                                'body': '#333333',
+                                'label': '#666666',
+                                'border': '#E5E5E5',
+                                'divider': '#F0F0F0',
+                                'surface_1': '#F9F9F9',
+                                'surface_2': '#EFEFEF',
+                            },
                             'tone': {
+                                'voice': 'clean, fresh, trustworthy',
                                 'attributes': ['reliable', 'family-friendly', 'confident'],
-                                'donts': ['Avoid technical jargon', "Don't be overly serious"],
                                 'dos': ['Use simple, direct language', 'Emphasize cleaning power'],
-                                'voice': 'clean, fresh, trustworthy',
+                                'donts': ['Avoid technical jargon', "Don't be overly serious"],
                             },
-                            'url': 'https://tide.com',
+                            'tagline': [{'en_US': "Tide's In, Dirt's Out"}],
                             'visual_guidelines': {
-                                'colorways': [
-                                    {
-                                        'accent': '#0066CC',
-                                        'background': '#FF6600',
-                                        'foreground': '#FFFFFF',
-                                        'name': 'primary',
+                                'photography': {
+                                    'realism': 'natural',
+                                    'lighting': 'soft daylight',
+                                    'color_temperature': 'warm',
+                                    'contrast': 'medium',
+                                    'depth_of_field': 'medium',
+                                    'subject': {
+                                        'people': {
+                                            'age_range': '25-45',
+                                            'diversity': 'mixed',
+                                            'mood': ['confident', 'relaxed', 'happy'],
+                                        },
+                                        'product_focus': 'in-use',
+                                        'setting': 'indoor',
                                     },
-                                    {
-                                        'accent': '#0066CC',
-                                        'background': '#FFFFFF',
-                                        'border': '#FF6600',
-                                        'foreground': '#FF6600',
-                                        'name': 'inverted',
+                                    'framing': {
+                                        'subject_position': 'center',
+                                        'crop_style': 'waist-up',
+                                        'perspective': 'eye-level',
                                     },
-                                ],
+                                    'preferred_aspect_ratios': ['16:9', '4:5', '1:1'],
+                                },
+                                'graphic_style': {
+                                    'style_type': 'flat_illustration',
+                                    'stroke_style': 'rounded',
+                                    'stroke_weight': '2px',
+                                    'corner_radius': '12px',
+                                },
+                                'shapes': {
+                                    'primary_shape': 'circle',
+                                    'secondary_shapes': ['rounded_rectangle'],
+                                    'usage': {'max_per_layout': 2, 'overlap_allowed': False},
+                                },
+                                'iconography': {
+                                    'style': 'outline',
+                                    'stroke_weight': '2px',
+                                    'corner_style': 'rounded',
+                                    'usage': {'max_per_frame': 3, 'size_ratio': '1:8'},
+                                },
                                 'composition': {
+                                    'overlays': {
+                                        'gradient_style': 'linear',
+                                        'gradient_direction': '180deg',
+                                        'opacity': '60%',
+                                    },
+                                    'texture': {'style': 'none'},
                                     'backgrounds': {
                                         'types_allowed': [
                                             'solid_color',
@@ -1253,225 +1569,265 @@ class BrandDiscovery(
                                             'blurred_photo',
                                         ]
                                     },
-                                    'overlays': {
-                                        'gradient_direction': '180deg',
-                                        'gradient_style': 'linear',
-                                        'opacity': '60%',
-                                    },
-                                    'texture': {'style': 'none'},
                                 },
-                                'graphic_style': {
-                                    'corner_radius': '12px',
-                                    'stroke_style': 'rounded',
-                                    'stroke_weight': '2px',
-                                    'style_type': 'flat_illustration',
+                                'border_radius': {
+                                    'none': '0',
+                                    'default': '12px',
+                                    'small': '4px',
+                                    'large': '20px',
+                                    'pill': '999px',
                                 },
-                                'iconography': {
-                                    'corner_style': 'rounded',
-                                    'stroke_weight': '2px',
-                                    'style': 'outline',
-                                    'usage': {'max_per_frame': 3, 'size_ratio': '1:8'},
+                                'elevation': {
+                                    'none': 'none',
+                                    'subtle': '0 1px 3px rgba(0,0,0,0.08)',
+                                    'card': '0 4px 8px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.06)',
+                                    'modal': '0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.06)',
                                 },
-                                'logo_placement': {
-                                    'background_contrast': 'any',
-                                    'min_clear_space': '0.5x',
-                                    'min_height': '32px',
-                                    'preferred_position': 'bottom-right',
+                                'spacing': {
+                                    'unit': '8px',
+                                    'scale': {
+                                        'xs': '4px',
+                                        'sm': '8px',
+                                        'md': '16px',
+                                        'lg': '24px',
+                                        'xl': '32px',
+                                        '2xl': '48px',
+                                    },
                                 },
                                 'motion': {
+                                    'transition_style': 'dissolve',
                                     'animation_speed': 'moderate',
                                     'easing': 'ease-in-out',
-                                    'kinetic_typography': False,
-                                    'pacing': 'moderate',
                                     'text_entrance': 'fade',
-                                    'transition_style': 'dissolve',
+                                    'pacing': 'moderate',
+                                    'kinetic_typography': False,
                                 },
-                                'photography': {
-                                    'color_temperature': 'warm',
-                                    'contrast': 'medium',
-                                    'depth_of_field': 'medium',
-                                    'framing': {
-                                        'crop_style': 'waist-up',
-                                        'perspective': 'eye-level',
-                                        'subject_position': 'center',
+                                'logo_placement': {
+                                    'preferred_position': 'bottom-right',
+                                    'min_clear_space': '0.5x',
+                                    'min_height': '32px',
+                                    'background_contrast': 'any',
+                                },
+                                'colorways': [
+                                    {
+                                        'name': 'primary',
+                                        'foreground': '#FFFFFF',
+                                        'background': '#FF6600',
+                                        'accent': '#0066CC',
                                     },
-                                    'lighting': 'soft daylight',
-                                    'preferred_aspect_ratios': ['16:9', '4:5', '1:1'],
-                                    'realism': 'natural',
-                                    'subject': {
-                                        'people': {
-                                            'age_range': '25-45',
-                                            'diversity': 'mixed',
-                                            'mood': ['confident', 'relaxed', 'happy'],
-                                        },
-                                        'product_focus': 'in-use',
-                                        'setting': 'indoor',
+                                    {
+                                        'name': 'inverted',
+                                        'foreground': '#FF6600',
+                                        'background': '#FFFFFF',
+                                        'accent': '#0066CC',
+                                        'border': '#FF6600',
                                     },
-                                },
-                                'restrictions': [
-                                    'Never place text over the product',
-                                    'Do not use black backgrounds',
-                                    'No stock photography of people on phones',
                                 ],
-                                'shapes': {
-                                    'primary_shape': 'circle',
-                                    'secondary_shapes': ['rounded_rectangle'],
-                                    'usage': {'max_per_layout': 2, 'overlap_allowed': False},
-                                },
                                 'type_scale': {
                                     'base_width': '1080px',
-                                    'body': {
-                                        'font': 'secondary',
-                                        'line_height': '1.5',
-                                        'size': '16px',
-                                        'weight': '400',
-                                    },
-                                    'cta': {
-                                        'font': 'primary',
-                                        'letter_spacing': '0.05em',
-                                        'size': '18px',
-                                        'text_transform': 'uppercase',
-                                        'weight': '700',
-                                    },
                                     'heading': {
                                         'font': 'primary',
-                                        'line_height': '1.1',
                                         'size': '48px',
-                                        'text_transform': 'none',
                                         'weight': '700',
+                                        'line_height': '1.1',
+                                        'text_transform': 'none',
                                     },
                                     'subheading': {
                                         'font': 'primary',
-                                        'line_height': '1.3',
                                         'size': '24px',
                                         'weight': '600',
+                                        'line_height': '1.3',
+                                    },
+                                    'body': {
+                                        'font': 'secondary',
+                                        'size': '16px',
+                                        'weight': '400',
+                                        'line_height': '1.5',
+                                    },
+                                    'cta': {
+                                        'font': 'primary',
+                                        'size': '18px',
+                                        'weight': '700',
+                                        'text_transform': 'uppercase',
+                                        'letter_spacing': '0.05em',
                                     },
                                 },
+                                'restrictions': [
+                                    'Never place text over the product',
+                                    'Do not use black backgrounds',
+                                    'No stock photography of people on phones',
+                                ],
                             },
+                            'properties': [
+                                {'type': 'website', 'identifier': 'tide.com', 'primary': True},
+                                {
+                                    'type': 'mobile_app',
+                                    'store': 'apple',
+                                    'identifier': 'com.pg.tide',
+                                },
+                            ],
+                            'contact': {'email': 'brands@pg.com'},
                         },
                         {
-                            'colors': {'primary': '#00A0D2'},
                             'id': 'pampers',
-                            'industries': ['cpg'],
+                            'url': 'https://pampers.com',
+                            'names': [{'en_US': 'Pampers'}],
                             'keller_type': 'master',
+                            'industries': ['cpg'],
                             'logos': [
                                 {
-                                    'orientation': 'horizontal',
                                     'url': 'https://cdn.pg.com/pampers/logo.png',
+                                    'orientation': 'horizontal',
                                     'variant': 'primary',
                                 }
                             ],
-                            'names': [{'en_US': 'Pampers'}],
+                            'colors': {'primary': '#00A0D2'},
                             'properties': [
-                                {'identifier': 'pampers.com', 'primary': True, 'type': 'website'}
+                                {'type': 'website', 'identifier': 'pampers.com', 'primary': True}
                             ],
-                            'url': 'https://pampers.com',
                         },
                     ],
-                    'contact': {'email': 'brands@pg.com', 'name': 'P&G Brand Team'},
-                    'house': {
-                        'architecture': 'house_of_brands',
-                        'domain': 'pg.com',
-                        'name': 'Procter & Gamble',
-                    },
+                    'contact': {'name': 'P&G Brand Team', 'email': 'brands@pg.com'},
                     'last_updated': '2026-01-15T10:00:00Z',
-                    'version': '1.0',
                 },
                 {
-                    '$schema': '/schemas/3.0.0-rc.3/brand.json',
-                    'authorized_operators': [
-                        {
-                            'brands': ['nike', 'air_jordan'],
-                            'countries': ['US', 'GB', 'DE', 'FR'],
-                            'domain': 'wpp.com',
-                        },
-                        {'brands': ['nike'], 'countries': ['JP'], 'domain': 'dentsu.co.jp'},
-                        {'brands': ['*'], 'domain': 'nike.com'},
-                    ],
+                    '$schema': '/schemas/latest/brand.json',
+                    'version': '1.0',
+                    'house': {
+                        'domain': 'nikeinc.com',
+                        'name': 'Nike, Inc.',
+                        'architecture': 'hybrid',
+                    },
                     'brands': [
                         {
-                            'colors': {'accent': '#FF6600', 'primary': '#111111'},
                             'id': 'nike',
+                            'url': 'https://nike.com',
+                            'names': [{'en_US': 'Nike'}, {'zh_CN': '耐克'}, {'ja_JP': 'ナイキ'}],
                             'keller_type': 'master',
                             'logos': [
                                 {
-                                    'background': 'dark-bg',
-                                    'orientation': 'horizontal',
                                     'url': 'https://cdn.nike.com/swoosh-dark.svg',
-                                    'usage': 'Swoosh icon for dark backgrounds',
+                                    'orientation': 'horizontal',
+                                    'background': 'dark-bg',
                                     'variant': 'icon',
+                                    'usage': 'Swoosh icon for dark backgrounds',
                                 },
                                 {
-                                    'background': 'light-bg',
-                                    'orientation': 'horizontal',
                                     'url': 'https://cdn.nike.com/logo-full.svg',
-                                    'usage': 'Full logo with wordmark for light backgrounds',
+                                    'orientation': 'horizontal',
+                                    'background': 'light-bg',
                                     'variant': 'full-lockup',
+                                    'usage': 'Full logo with wordmark for light backgrounds',
                                 },
                             ],
-                            'names': [{'en_US': 'Nike'}, {'zh_CN': '耐克'}, {'ja_JP': 'ナイキ'}],
+                            'colors': {'primary': '#111111', 'accent': '#FF6600'},
+                            'tone': 'inspirational, bold, athletic',
+                            'tagline': [{'en_US': 'Just Do It'}],
                             'properties': [
-                                {'identifier': 'nike.com', 'primary': True, 'type': 'website'},
-                                {'identifier': 'nike.cn', 'region': 'CN', 'type': 'website'},
+                                {'type': 'website', 'identifier': 'nike.com', 'primary': True},
+                                {'type': 'website', 'identifier': 'nike.cn', 'region': 'CN'},
                                 {
-                                    'identifier': 'com.nike.omega',
-                                    'store': 'apple',
                                     'type': 'mobile_app',
+                                    'store': 'apple',
+                                    'identifier': 'com.nike.omega',
                                 },
                             ],
-                            'tagline': [{'en_US': 'Just Do It'}],
-                            'tone': 'inspirational, bold, athletic',
-                            'url': 'https://nike.com',
                         },
                         {
-                            'brand_agent': {'id': 'nike_dam', 'url': 'https://dam.nike.com/mcp'},
-                            'colors': {'primary': '#CE1141', 'secondary': '#111111'},
                             'id': 'air_jordan',
+                            'url': 'https://jordan.com',
+                            'names': [
+                                {'en_US': 'Air Jordan'},
+                                {'en_US': 'Jordan'},
+                                {'en_US': 'Jumpman'},
+                            ],
                             'keller_type': 'endorsed',
+                            'parent_brand': 'nike',
                             'logos': [
                                 {
-                                    'background': 'transparent-bg',
-                                    'orientation': 'square',
                                     'url': 'https://cdn.nike.com/jumpman.svg',
+                                    'orientation': 'square',
+                                    'background': 'transparent-bg',
                                     'variant': 'icon',
                                 }
                             ],
-                            'names': [
-                                {'en_US': 'Air Jordan'},
-                                {'en_US': 'Jordan'},
-                                {'en_US': 'Jumpman'},
-                            ],
-                            'parent_brand': 'nike',
+                            'colors': {'primary': '#CE1141', 'secondary': '#111111'},
                             'properties': [
-                                {'identifier': 'jordan.com', 'primary': True, 'type': 'website'},
-                                {'identifier': 'jumpman23.com', 'type': 'website'},
+                                {'type': 'website', 'identifier': 'jordan.com', 'primary': True},
+                                {'type': 'website', 'identifier': 'jumpman23.com'},
                             ],
-                            'url': 'https://jordan.com',
+                            'brand_agent': {'url': 'https://dam.nike.com/mcp', 'id': 'nike_dam'},
                         },
                         {
                             'id': 'converse',
+                            'url': 'https://converse.com',
+                            'names': [{'en_US': 'Converse'}],
                             'keller_type': 'independent',
                             'logos': [
                                 {
-                                    'orientation': 'square',
                                     'url': 'https://cdn.converse.com/star.svg',
+                                    'orientation': 'square',
                                     'variant': 'icon',
                                 }
                             ],
-                            'names': [{'en_US': 'Converse'}],
                             'properties': [
-                                {'identifier': 'converse.com', 'primary': True, 'type': 'website'}
+                                {'type': 'website', 'identifier': 'converse.com', 'primary': True}
                             ],
-                            'url': 'https://converse.com',
                         },
                     ],
+                    'authorized_operators': [
+                        {
+                            'domain': 'wpp.com',
+                            'brands': ['nike', 'air_jordan'],
+                            'countries': ['US', 'GB', 'DE', 'FR'],
+                        },
+                        {'domain': 'dentsu.co.jp', 'brands': ['nike'], 'countries': ['JP']},
+                        {'domain': 'nike.com', 'brands': ['*']},
+                    ],
+                    'last_updated': '2026-01-15T10:00:00Z',
+                },
+                {
+                    '$schema': '/schemas/latest/brand.json',
+                    'version': '1.0',
                     'house': {
-                        'architecture': 'hybrid',
-                        'domain': 'nikeinc.com',
-                        'name': 'Nike, Inc.',
+                        'domain': 'mediavine.com',
+                        'name': 'Mediavine',
+                        'architecture': 'branded_house',
                     },
+                    'brands': [
+                        {
+                            'id': 'mediavine',
+                            'url': 'https://mediavine.com',
+                            'names': [{'en_US': 'Mediavine'}],
+                            'keller_type': 'master',
+                            'properties': [
+                                {'type': 'website', 'identifier': 'mediavine.com', 'primary': True},
+                                {
+                                    'type': 'website',
+                                    'identifier': 'thehollywoodgossip.com',
+                                    'relationship': 'delegated',
+                                },
+                                {
+                                    'type': 'website',
+                                    'identifier': 'foodfanatic.com',
+                                    'relationship': 'delegated',
+                                },
+                                {
+                                    'type': 'website',
+                                    'identifier': 'thebiglead.com',
+                                    'relationship': 'delegated',
+                                },
+                            ],
+                            'agents': [
+                                {
+                                    'type': 'sales',
+                                    'url': 'https://ads.mediavine.com/mcp',
+                                    'id': 'mediavine_sales',
+                                }
+                            ],
+                        }
+                    ],
                     'last_updated': '2026-01-15T10:00:00Z',
-                    'version': '1.0',
                 },
             ],
             title='Brand Discovery',
diff --git a/src/adcp/types/generated_poc/brand/acquire_rights_request.py b/src/adcp/types/generated_poc/brand/acquire_rights_request.py
index 9e550adc6..3c1ee93ad 100644
--- a/src/adcp/types/generated_poc/brand/acquire_rights_request.py
+++ b/src/adcp/types/generated_poc/brand/acquire_rights_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand/acquire_rights_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -26,60 +26,69 @@ class Campaign(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    description: Annotated[str, Field(description='Description of how the rights will be used')]
+    uses: Annotated[
+        list[right_use.RightUse],
+        Field(description='Specific rights uses for this campaign', min_length=1),
+    ]
     countries: Annotated[
         list[Country] | None,
         Field(description='Countries where the campaign will run (ISO 3166-1 alpha-2)'),
     ] = None
-    description: Annotated[str, Field(description='Description of how the rights will be used')]
-    end_date: Annotated[date_aliased | None, Field(description='Campaign end date (ISO 8601)')] = (
-        None
-    )
-    estimated_impressions: Annotated[
-        int | None, Field(description='Estimated total impressions for the campaign', ge=0)
-    ] = None
     format_ids: Annotated[
         list[format_id.FormatId] | None, Field(description='Creative formats that will be produced')
     ] = None
+    estimated_impressions: Annotated[
+        int | None, Field(description='Estimated total impressions for the campaign', ge=0)
+    ] = None
     start_date: Annotated[
         date_aliased | None, Field(description='Campaign start date (ISO 8601)')
     ] = None
-    uses: Annotated[
-        list[right_use.RightUse],
-        Field(description='Specific rights uses for this campaign', min_length=1),
-    ]
+    end_date: Annotated[date_aliased | None, Field(description='Campaign end date (ISO 8601)')] = (
+        None
+    )
 
 
 class AcquireRightsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    buyer: Annotated[brand_ref.BrandReference, Field(description="The buyer's brand identity")]
-    campaign: Annotated[Campaign, Field(description='Campaign details for rights clearance')]
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    idempotency_key: Annotated[
-        str | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Client-generated key for safe retries. Resubmitting with the same key returns the original response rather than creating a duplicate acquisition. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
+    rights_id: Annotated[
+        str, Field(description='Rights offering identifier from get_rights response')
+    ]
     pricing_option_id: Annotated[
         str, Field(description='Selected pricing option from the rights offering')
     ]
+    buyer: Annotated[brand_ref.BrandReference, Field(description="The buyer's brand identity")]
+    campaign: Annotated[Campaign, Field(description='Campaign details for rights clearance')]
+    revocation_webhook: Annotated[
+        push_notification_config_1.PushNotificationConfig,
+        Field(
+            description='Webhook for rights revocation notifications. If the rights holder needs to revoke rights (talent scandal, contract violation, etc.), they POST a revocation-notification to this URL. The buyer is responsible for stopping creative delivery upon receipt.'
+        ),
+    ]
     push_notification_config: Annotated[
         push_notification_config_1.PushNotificationConfig | None,
         Field(
             description='Webhook for async status updates if the acquisition requires approval. The rights agent sends a webhook notification when the status transitions to acquired or rejected.'
         ),
     ] = None
-    revocation_webhook: Annotated[
-        push_notification_config_1.PushNotificationConfig,
+    idempotency_key: Annotated[
+        str,
         Field(
-            description='Webhook for rights revocation notifications. If the rights holder needs to revoke rights (talent scandal, contract violation, etc.), they POST a revocation-notification to this URL. The buyer is responsible for stopping creative delivery upon receipt.'
+            description='Client-generated key for safe retries. Resubmitting with the same key returns the original response rather than creating a duplicate acquisition. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
     ]
-    rights_id: Annotated[
-        str, Field(description='Rights offering identifier from get_rights response')
-    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/brand/acquire_rights_response.py b/src/adcp/types/generated_poc/brand/acquire_rights_response.py
index 2701a33d4..dd5acd653 100644
--- a/src/adcp/types/generated_poc/brand/acquire_rights_response.py
+++ b/src/adcp/types/generated_poc/brand/acquire_rights_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand/acquire_rights_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -31,50 +31,50 @@ class AcquireRightsResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    rights_id: str
+    status: Annotated[
+        Literal['pending_approval'],
+        Field(description='Rights require approval from the rights holder'),
+    ]
     brand_id: str
-    context: context_1.ContextObject | None = None
     detail: Annotated[str | None, Field(description='Explanation of what requires approval')] = None
     estimated_response_time: Annotated[
         str | None,
         Field(description="Expected time for approval decision (e.g., '48h', '3 business days')"),
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    rights_id: str
-    status: Annotated[
-        Literal['pending_approval'],
-        Field(description='Rights require approval from the rights holder'),
-    ]
 
 
 class AcquireRightsResponse3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    rights_id: str
+    status: Annotated[Literal['rejected'], Field(description='Rights request was rejected')]
     brand_id: str
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     reason: Annotated[
         str,
         Field(
             description="Why the rights request was rejected. May be sanitized to protect confidential brand rules — e.g., 'This violates our public figures brand guidelines' rather than naming the specific rule."
         ),
     ]
-    rights_id: str
-    status: Annotated[Literal['rejected'], Field(description='Rights request was rejected')]
     suggestions: Annotated[
         list[str] | None,
         Field(
             description='Actionable alternatives the buyer can try. If present, the rejection is fixable — the buyer can adjust their request. If absent, the rejection is final for this talent/rights combination.'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class AcquireRightsResponse4(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[list[error.Error], Field(min_length=1)]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -82,18 +82,12 @@ class AcquireRightsResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    approval_webhook: Annotated[
-        push_notification_config.PushNotificationConfig | None,
-        Field(
-            description='Authenticated webhook for submitting creatives for approval. POST a creative-approval-request to the URL using the provided authentication. The response is a creative-approval-response.'
-        ),
-    ] = None
+    rights_id: Annotated[str, Field(description='Rights grant identifier')]
+    status: Annotated[
+        Literal['acquired'], Field(description='Rights have been cleared and credentials issued')
+    ]
     brand_id: Annotated[str, Field(description='Brand identifier of the rights subject')]
-    context: context_1.ContextObject | None = None
-    disclosure: Annotated[
-        Disclosure | None, Field(description='Required disclosure for creatives using these rights')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
+    terms: Annotated[rights_terms.RightsTerms, Field(description='Agreed contractual terms')]
     generation_credentials: Annotated[
         list[generation_credential.GenerationCredential],
         Field(description='Scoped credentials for generating rights-cleared content'),
@@ -101,20 +95,26 @@ class AcquireRightsResponse1(AdCPBaseModel):
     restrictions: Annotated[
         list[str] | None, Field(description='Usage restrictions and requirements')
     ] = None
+    disclosure: Annotated[
+        Disclosure | None, Field(description='Required disclosure for creatives using these rights')
+    ] = None
+    approval_webhook: Annotated[
+        push_notification_config.PushNotificationConfig | None,
+        Field(
+            description='Authenticated webhook for submitting creatives for approval. POST a creative-approval-request to the URL using the provided authentication. The response is a creative-approval-response.'
+        ),
+    ] = None
+    usage_reporting_url: Annotated[
+        AnyUrl | None, Field(description='Endpoint for reporting usage against these rights')
+    ] = None
     rights_constraint: Annotated[
         rights_constraint_1.RightsConstraint,
         Field(
             description='Pre-built rights constraint for embedding in creative manifests. Populated from the agreed terms — the buyer does not need to construct it manually.'
         ),
     ]
-    rights_id: Annotated[str, Field(description='Rights grant identifier')]
-    status: Annotated[
-        Literal['acquired'], Field(description='Rights have been cleared and credentials issued')
-    ]
-    terms: Annotated[rights_terms.RightsTerms, Field(description='Agreed contractual terms')]
-    usage_reporting_url: Annotated[
-        AnyUrl | None, Field(description='Endpoint for reporting usage against these rights')
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 AcquireRightsResponse = (
diff --git a/src/adcp/types/generated_poc/brand/creative_approval_request.py b/src/adcp/types/generated_poc/brand/creative_approval_request.py
new file mode 100644
index 000000000..3c558808a
--- /dev/null
+++ b/src/adcp/types/generated_poc/brand/creative_approval_request.py
@@ -0,0 +1,61 @@
+# generated by datamodel-codegen:
+#   filename:  brand/creative_approval_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+from ..core import format_id
+
+
+class CreativeApprovalRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    rights_id: Annotated[str, Field(description='Rights grant this creative was produced under')]
+    creative_id: Annotated[
+        str | None,
+        Field(
+            description='Buyer-assigned creative identifier. Equivalent to OpenRTB crid. Used to track approval status across resubmissions.'
+        ),
+    ] = None
+    creative_url: Annotated[
+        AnyUrl, Field(description='URL where the creative asset can be retrieved for review')
+    ]
+    creative_format: Annotated[
+        format_id.FormatId | None, Field(description='Format of the creative being submitted')
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of the creative for reviewer context')
+    ] = None
+    metadata: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Additional creative metadata (duration, dimensions, target audience, etc.)'
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated key for safe retries. Resubmitting with the same key returns the original response. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/brand/creative_approval_response.py b/src/adcp/types/generated_poc/brand/creative_approval_response.py
new file mode 100644
index 000000000..38fbfa892
--- /dev/null
+++ b/src/adcp/types/generated_poc/brand/creative_approval_response.py
@@ -0,0 +1,96 @@
+# generated by datamodel-codegen:
+#   filename:  brand/creative_approval_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import error
+from ..core import ext as ext_1
+
+
+class CreativeApprovalResponse1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    status: Annotated[
+        Literal['approved'], Field(description='Creative has been approved for distribution')
+    ]
+    rights_id: str
+    creative_id: Annotated[
+        str | None, Field(description="Echo of the buyer's creative identifier")
+    ] = None
+    creative_url: AnyUrl | None = None
+    approved_at: AwareDatetime | None = None
+    conditions: Annotated[
+        list[str] | None,
+        Field(description="Conditions on the approval (e.g., 'approved for NL market only')"),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+class CreativeApprovalResponse2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    status: Annotated[Literal['rejected'], Field(description='Creative was rejected')]
+    rights_id: str
+    creative_id: Annotated[
+        str | None, Field(description="Echo of the buyer's creative identifier")
+    ] = None
+    creative_url: AnyUrl | None = None
+    reason: Annotated[str, Field(description='Why the creative was rejected')]
+    suggestions: Annotated[
+        list[str] | None,
+        Field(
+            description='Actionable feedback for revision. If present, the buyer can revise and resubmit the creative. If absent, the rejection is final for this creative concept.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+class CreativeApprovalResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    status: Annotated[Literal['pending_review'], Field(description='Creative is queued for review')]
+    rights_id: str
+    creative_id: Annotated[
+        str | None, Field(description="Echo of the buyer's creative identifier")
+    ] = None
+    creative_url: AnyUrl | None = None
+    estimated_response_time: Annotated[
+        str | None, Field(description="Expected time for review (e.g., '24h', '2 business days')")
+    ] = None
+    status_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to poll for updated approval status. GET this URL to receive a creative-approval-response. Poll at reasonable intervals (suggested: every 5 minutes, back off after 1 hour to every 30 minutes). Stop polling after estimated_response_time has elapsed and the status is still pending_review.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+class CreativeApprovalResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[list[error.Error], Field(min_length=1)]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+CreativeApprovalResponse = (
+    CreativeApprovalResponse1
+    | CreativeApprovalResponse2
+    | CreativeApprovalResponse3
+    | CreativeApprovalResponse4
+)
diff --git a/src/adcp/types/generated_poc/brand/get_brand_identity_request.py b/src/adcp/types/generated_poc/brand/get_brand_identity_request.py
index 62bf7c097..17376eb97 100644
--- a/src/adcp/types/generated_poc/brand/get_brand_identity_request.py
+++ b/src/adcp/types/generated_poc/brand/get_brand_identity_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand/get_brand_identity_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -33,9 +33,15 @@ class GetBrandIdentityRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     brand_id: Annotated[str, Field(description='Brand identifier from brand.json brands array')]
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     fields: Annotated[
         list[FieldModel] | None,
         Field(
@@ -49,3 +55,5 @@ class GetBrandIdentityRequest(AdCPBaseModel):
             description="Intended use case, so the agent can tailor the response. A 'voice_synthesis' use case returns voice configs; a 'likeness' use case returns high-res photos and appearance guidelines."
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/brand/get_brand_identity_response.py b/src/adcp/types/generated_poc/brand/get_brand_identity_response.py
index 3a4e36c9d..511717969 100644
--- a/src/adcp/types/generated_poc/brand/get_brand_identity_response.py
+++ b/src/adcp/types/generated_poc/brand/get_brand_identity_response.py
@@ -1,11 +1,11 @@
 # generated by datamodel-codegen:
 #   filename:  brand/get_brand_identity_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from enum import Enum
-from typing import Annotated, Any
+from typing import Any, Annotated, Any
 
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, ConfigDict, Field, RootModel
@@ -16,95 +16,111 @@
 from ..enums import asset_content_type, right_use
 
 
-class Asset(AdCPBaseModel):
+class House(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_id: Annotated[str, Field(description='Unique identifier')]
-    asset_type: Annotated[
-        asset_content_type.AssetContentType, Field(description='Type of asset content')
-    ]
-    description: Annotated[str | None, Field(description='Asset description or usage notes')] = None
-    duration_seconds: Annotated[
-        float | None, Field(description='Video/audio duration in seconds')
-    ] = None
-    file_size_bytes: Annotated[int | None, Field(description='File size in bytes')] = None
-    format: Annotated[str | None, Field(description="File format (e.g., 'jpg', 'mp4')")] = None
-    height: Annotated[int | None, Field(description='Image/video height in pixels')] = None
-    name: Annotated[str | None, Field(description='Human-readable name')] = None
-    tags: Annotated[list[str] | None, Field(description='Tags for discovery')] = None
-    url: Annotated[AnyUrl, Field(description='URL to CDN-hosted asset file')]
-    width: Annotated[int | None, Field(description='Image/video width in pixels')] = None
+    domain: Annotated[str, Field(description='House domain (e.g., nikeinc.com)')]
+    name: Annotated[str, Field(description='House display name')]
 
 
-class AvailableField(Enum):
-    description = 'description'
-    industries = 'industries'
-    keller_type = 'keller_type'
-    logos = 'logos'
-    colors = 'colors'
-    fonts = 'fonts'
-    visual_guidelines = 'visual_guidelines'
-    tone = 'tone'
-    tagline = 'tagline'
-    voice_synthesis = 'voice_synthesis'
-    assets = 'assets'
-    rights = 'rights'
+class KellerType(Enum):
+    master = 'master'
+    sub_brand = 'sub_brand'
+    endorsed = 'endorsed'
+    independent = 'independent'
+
+
+class Orientation(Enum):
+    square = 'square'
+    horizontal = 'horizontal'
+    vertical = 'vertical'
+    stacked = 'stacked'
+
+
+class Background(Enum):
+    dark_bg = 'dark-bg'
+    light_bg = 'light-bg'
+    transparent_bg = 'transparent-bg'
+
+
+class Variant(Enum):
+    primary = 'primary'
+    secondary = 'secondary'
+    icon = 'icon'
+    wordmark = 'wordmark'
+    full_lockup = 'full-lockup'
+
+
+class Logo(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the logo asset')]
+    orientation: Annotated[
+        Orientation | None, Field(description='Logo aspect ratio orientation')
+    ] = None
+    background: Annotated[Background | None, Field(description='Background compatibility')] = None
+    variant: Annotated[Variant | None, Field(description='Logo variant type')] = None
+    tags: Annotated[list[str] | None, Field(description='Additional semantic tags')] = None
+    usage: Annotated[str | None, Field(description='When to use this logo variant')] = None
+    width: Annotated[int | None, Field(description='Width in pixels')] = None
+    height: Annotated[int | None, Field(description='Height in pixels')] = None
 
 
-class Accent(RootModel[str]):
+class Primary(RootModel[str]):
     root: Annotated[str, Field(pattern='^#[0-9A-Fa-f]{6}$')]
 
 
-class Accent1Item(Accent):
+class Primary1Item(Primary):
     pass
 
 
-class Accent1(RootModel[list[Accent1Item]]):
-    root: Annotated[list[Accent1Item], Field(min_length=1)]
+class Primary1(RootModel[list[Primary1Item]]):
+    root: Annotated[list[Primary1Item], Field(min_length=1)]
 
 
-class Background(Accent):
+class Secondary(Primary):
     pass
 
 
-class Background2Item(Accent):
+class Secondary1Item(Primary):
     pass
 
 
-class Background2(RootModel[list[Background2Item]]):
-    root: Annotated[list[Background2Item], Field(min_length=1)]
+class Secondary1(RootModel[list[Secondary1Item]]):
+    root: Annotated[list[Secondary1Item], Field(min_length=1)]
 
 
-class Primary(Accent):
+class Accent(Primary):
     pass
 
 
-class Primary1Item(Accent):
+class Accent1Item(Primary):
     pass
 
 
-class Primary1(RootModel[list[Primary1Item]]):
-    root: Annotated[list[Primary1Item], Field(min_length=1)]
+class Accent1(RootModel[list[Accent1Item]]):
+    root: Annotated[list[Accent1Item], Field(min_length=1)]
 
 
-class Secondary(Accent):
+class Background2(Primary):
     pass
 
 
-class Secondary1Item(Accent):
+class Background3Item(Primary):
     pass
 
 
-class Secondary1(RootModel[list[Secondary1Item]]):
-    root: Annotated[list[Secondary1Item], Field(min_length=1)]
+class Background3(RootModel[list[Background3Item]]):
+    root: Annotated[list[Background3Item], Field(min_length=1)]
 
 
-class Text(Accent):
+class Text(Primary):
     pass
 
 
-class Text1Item(Accent):
+class Text1Item(Primary):
     pass
 
 
@@ -116,131 +132,174 @@ class Colors(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    accent: Accent | Accent1 | None = None
-    background: Background | Background2 | None = None
     primary: Primary | Primary1 | None = None
     secondary: Secondary | Secondary1 | None = None
+    accent: Accent | Accent1 | None = None
+    background: Background2 | Background3 | None = None
     text: Text | Text1 | None = None
 
 
-class Fonts(AdCPBaseModel):
+class Tone(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    font_urls: Annotated[list[AnyUrl] | None, Field(description='URLs to web font files')] = None
-    primary: Annotated[str | None, Field(description='Primary font family')] = None
-    secondary: Annotated[str | None, Field(description='Secondary font family')] = None
+    voice: Annotated[
+        str | None,
+        Field(
+            description="Brand personality described as comma-separated adjectives (e.g., 'enthusiastic, warm, competitive')"
+        ),
+    ] = None
+    attributes: Annotated[
+        list[str] | None,
+        Field(
+            description='Personality traits that characterize the brand voice, used as prompt guidance'
+        ),
+    ] = None
+    dos: Annotated[
+        list[str] | None,
+        Field(description='Approved messaging approaches, content themes, and reference points'),
+    ] = None
+    donts: Annotated[
+        list[str] | None,
+        Field(description='Prohibited topics, competitor references, and phrasings to avoid'),
+    ] = None
 
 
-class House(AdCPBaseModel):
+class Tagline(RootModel[list[dict[str, str]]]):
+    root: Annotated[
+        list[dict[str, str]],
+        Field(description='Localized taglines with BCP 47 locale codes', min_length=1),
+    ]
+
+
+class VoiceSynthesis(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    domain: Annotated[str, Field(description='House domain (e.g., nikeinc.com)')]
-    name: Annotated[str, Field(description='House display name')]
+    provider: str | None = None
+    voice_id: str | None = None
+    settings: dict[str, Any] | None = None
 
 
-class KellerType(Enum):
-    master = 'master'
-    sub_brand = 'sub_brand'
-    endorsed = 'endorsed'
-    independent = 'independent'
+class Asset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    asset_id: Annotated[str, Field(description='Unique identifier')]
+    asset_type: Annotated[
+        asset_content_type.AssetContentType, Field(description='Type of asset content')
+    ]
+    url: Annotated[AnyUrl, Field(description='URL to CDN-hosted asset file')]
+    tags: Annotated[list[str] | None, Field(description='Tags for discovery')] = None
+    name: Annotated[str | None, Field(description='Human-readable name')] = None
+    description: Annotated[str | None, Field(description='Asset description or usage notes')] = None
+    width: Annotated[int | None, Field(description='Image/video width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image/video height in pixels')] = None
+    duration_seconds: Annotated[
+        float | None, Field(description='Video/audio duration in seconds')
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes')] = None
+    format: Annotated[str | None, Field(description="File format (e.g., 'jpg', 'mp4')")] = None
 
 
-class Background3(Enum):
-    dark_bg = 'dark-bg'
-    light_bg = 'light-bg'
-    transparent_bg = 'transparent-bg'
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
 
-class Orientation(Enum):
-    square = 'square'
-    horizontal = 'horizontal'
-    vertical = 'vertical'
-    stacked = 'stacked'
+class ExcludedCountry(Country):
+    pass
 
 
-class Variant(Enum):
-    primary = 'primary'
-    secondary = 'secondary'
-    icon = 'icon'
-    wordmark = 'wordmark'
-    full_lockup = 'full-lockup'
+class AvailableField(Enum):
+    description = 'description'
+    industries = 'industries'
+    keller_type = 'keller_type'
+    logos = 'logos'
+    colors = 'colors'
+    fonts = 'fonts'
+    visual_guidelines = 'visual_guidelines'
+    tone = 'tone'
+    tagline = 'tagline'
+    voice_synthesis = 'voice_synthesis'
+    assets = 'assets'
+    rights = 'rights'
 
 
-class Logo(AdCPBaseModel):
+class GetBrandIdentityResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    background: Annotated[Background3 | None, Field(description='Background compatibility')] = None
-    height: Annotated[int | None, Field(description='Height in pixels')] = None
-    orientation: Annotated[
-        Orientation | None, Field(description='Logo aspect ratio orientation')
-    ] = None
-    tags: Annotated[list[str] | None, Field(description='Additional semantic tags')] = None
-    url: Annotated[AnyUrl, Field(description='URL to the logo asset')]
-    usage: Annotated[str | None, Field(description='When to use this logo variant')] = None
-    variant: Annotated[Variant | None, Field(description='Logo variant type')] = None
-    width: Annotated[int | None, Field(description='Width in pixels')] = None
-
-
-class Country(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+    errors: Annotated[list[error.Error], Field(min_length=1)]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
-class ExcludedCountry(Country):
-    pass
+class WeightRangeItem(RootModel[int]):
+    root: Annotated[int, Field(ge=100, le=900)]
 
 
-class Tagline(RootModel[list[dict[str, str]]]):
-    root: Annotated[
-        list[dict[str, str]],
-        Field(description='Localized taglines with BCP 47 locale codes', min_length=1),
-    ]
+class Style(Enum):
+    normal = 'normal'
+    italic = 'italic'
+    oblique = 'oblique'
 
 
-class Tone(AdCPBaseModel):
+class File(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    attributes: Annotated[
-        list[str] | None,
-        Field(
-            description='Personality traits that characterize the brand voice, used as prompt guidance'
-        ),
-    ] = None
-    donts: Annotated[
-        list[str] | None,
-        Field(description='Prohibited topics, competitor references, and phrasings to avoid'),
-    ] = None
-    dos: Annotated[
-        list[str] | None,
-        Field(description='Approved messaging approaches, content themes, and reference points'),
-    ] = None
-    voice: Annotated[
-        str | None,
+    url: Annotated[AnyUrl, Field(description='HTTPS URL to the font file')]
+    weight: Annotated[int | None, Field(description='CSS numeric font-weight', ge=100, le=900)] = (
+        None
+    )
+    weight_range: Annotated[
+        list[WeightRangeItem] | None,
         Field(
-            description="Brand personality described as comma-separated adjectives (e.g., 'enthusiastic, warm, competitive')"
+            description='Variable font weight axis range as [min, max]', max_length=2, min_length=2
         ),
     ] = None
+    style: Annotated[Style | None, Field(description='CSS font-style')] = None
 
 
-class VoiceSynthesis(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    provider: str | None = None
-    settings: dict[str, Any] | None = None
-    voice_id: str | None = None
+class OpentypeFeature(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z0-9]{4}$')]
 
 
-class GetBrandIdentityResponse2(AdCPBaseModel):
+class Fallback(RootModel[str]):
+    root: Annotated[str, Field(max_length=100)]
+
+
+class FontRole2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    errors: Annotated[list[error.Error], Field(min_length=1)]
-    ext: ext_1.ExtensionObject | None = None
+    family: Annotated[str, Field(description='CSS font-family name')]
+    files: Annotated[list[File] | None, Field(max_length=36)] = None
+    opentype_features: Annotated[
+        list[OpentypeFeature] | None,
+        Field(
+            description="OpenType feature tags to enable (e.g., ['ss01', 'tnum'])", max_length=20
+        ),
+    ] = None
+    fallbacks: Annotated[
+        list[Fallback] | None,
+        Field(description='Ordered fallback font-family names for script coverage', max_length=10),
+    ] = None
+
+
+class FontRole(RootModel[str | FontRole2]):
+    root: str | FontRole2
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Fonts(AdCPBaseModel):
+    primary: Annotated[FontRole | None, Field(description='Primary font family')] = None
+    secondary: Annotated[FontRole | None, Field(description='Secondary font family')] = None
 
 
 class Rights(AdCPBaseModel):
@@ -248,7 +307,6 @@ class Rights(AdCPBaseModel):
         extra='allow',
     )
     available_uses: list[right_use.RightUse] | None = None
-    content_restrictions: list[str] | None = None
     countries: Annotated[
         list[Country] | None,
         Field(
@@ -260,44 +318,27 @@ class Rights(AdCPBaseModel):
         Field(description='Countries excluded from availability (ISO 3166-1 alpha-2)'),
     ] = None
     exclusivity_model: str | None = None
+    content_restrictions: list[str] | None = None
 
 
 class GetBrandIdentityResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    assets: Annotated[
-        list[Asset] | None,
-        Field(
-            description='Available brand assets (images, audio, video). Authorized callers only. Shape matches brand.json asset definition.'
-        ),
-    ] = None
-    available_fields: Annotated[
-        list[AvailableField] | None,
-        Field(
-            description='Fields available but not returned in this response due to authorization level. Tells the caller what they would gain by linking their account via sync_accounts. Values match the request fields enum.'
-        ),
-    ] = None
     brand_id: Annotated[str, Field(description='Brand identifier')]
-    colors: Annotated[
-        Colors | None,
-        Field(
-            description='Brand color palette. Each role accepts a single hex color or an array of hex colors. Shape matches brand.json colors definition.'
-        ),
-    ] = None
-    context: context_1.ContextObject | None = None
-    description: Annotated[str | None, Field(description='Brand description')] = None
-    ext: ext_1.ExtensionObject | None = None
-    fonts: Annotated[
-        Fonts | None,
-        Field(description='Brand typography. Shape matches brand.json fonts definition.'),
-    ] = None
     house: Annotated[
         House,
         Field(
             description='The house (corporate entity) this brand belongs to. Always returned regardless of authorization level.'
         ),
     ]
+    names: Annotated[
+        list[dict[str, str]],
+        Field(
+            description="Localized brand names with BCP 47 locale code keys (e.g., 'en_US', 'fr_CA'). Bare language codes ('en') are accepted as wildcards for backwards compatibility."
+        ),
+    ]
+    description: Annotated[str | None, Field(description='Brand description')] = None
     industries: Annotated[
         list[str] | None, Field(description='Brand industries.', min_length=1)
     ] = None
@@ -313,33 +354,53 @@ class GetBrandIdentityResponse1(AdCPBaseModel):
             description='Brand logos. Public callers get standard logos; authorized callers also receive high-res variants. Shape matches brand.json logo definition.'
         ),
     ] = None
-    names: Annotated[
-        list[dict[str, str]],
+    colors: Annotated[
+        Colors | None,
         Field(
-            description="Localized brand names with BCP 47 locale code keys (e.g., 'en_US', 'fr_CA'). Bare language codes ('en') are accepted as wildcards for backwards compatibility."
+            description='Brand color palette. Each role accepts a single hex color or an array of hex colors. Shape matches brand.json colors definition.'
         ),
-    ]
-    rights: Annotated[
-        Rights | None,
-        Field(description='Rights availability summary. For detailed pricing, use get_rights.'),
     ] = None
-    tagline: Annotated[
-        str | Tagline | None,
+    fonts: Annotated[
+        Fonts | None,
         Field(
-            description='Brand tagline or slogan. Accepts a plain string or a localized array matching the names pattern.'
+            description="Brand typography. Each key is a role name (e.g., 'primary', 'secondary') referenced by type_scale entries. Values are either a CSS font-family string or a structured object with family name and font files. Shape matches brand.json fonts definition."
         ),
     ] = None
-    tone: Annotated[Tone | None, Field(description='Brand voice and messaging guidelines')] = None
     visual_guidelines: Annotated[
         dict[str, Any] | None,
         Field(
             description='Structured visual rules for generative creative systems (photography, graphic_style, colorways, type_scale, motion). Matches brand.json visual_guidelines definition. Authorized callers only.'
         ),
     ] = None
+    tone: Annotated[Tone | None, Field(description='Brand voice and messaging guidelines')] = None
+    tagline: Annotated[
+        str | Tagline | None,
+        Field(
+            description='Brand tagline or slogan. Accepts a plain string or a localized array matching the names pattern.'
+        ),
+    ] = None
     voice_synthesis: Annotated[
         VoiceSynthesis | None,
         Field(description='Voice synthesis configuration for AI-generated audio'),
     ] = None
+    assets: Annotated[
+        list[Asset] | None,
+        Field(
+            description='Available brand assets (images, audio, video). Authorized callers only. Shape matches brand.json asset definition.'
+        ),
+    ] = None
+    rights: Annotated[
+        Rights | None,
+        Field(description='Rights availability summary. For detailed pricing, use get_rights.'),
+    ] = None
+    available_fields: Annotated[
+        list[AvailableField] | None,
+        Field(
+            description='Fields available but not returned in this response due to authorization level. Tells the caller what they would gain by linking their account via sync_accounts. Values match the request fields enum.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 GetBrandIdentityResponse = GetBrandIdentityResponse1 | GetBrandIdentityResponse2
diff --git a/src/adcp/types/generated_poc/brand/get_rights_request.py b/src/adcp/types/generated_poc/brand/get_rights_request.py
index 845c0c64f..8d0f9c59a 100644
--- a/src/adcp/types/generated_poc/brand/get_rights_request.py
+++ b/src/adcp/types/generated_poc/brand/get_rights_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand/get_rights_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -25,26 +25,50 @@ class GetRightsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    brand_id: Annotated[
-        str | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description="Search within a specific brand's rights. If omitted, searches across the agent's full roster."
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
+    query: Annotated[
+        str,
+        Field(
+            description='Natural language description of desired rights. The agent interprets intent, budget signals, and compatibility from this text.',
+            max_length=2000,
+        ),
+    ]
+    uses: Annotated[
+        list[right_use.RightUse],
+        Field(
+            description='Rights uses being requested. The agent returns options covering these uses, potentially bundled into composite pricing.',
+            min_length=1,
+        ),
+    ]
     buyer_brand: Annotated[
         brand_ref.BrandReference | None,
         Field(
             description="The buyer's brand. The agent fetches the buyer's brand.json for compatibility filtering (e.g., dietary conflicts, competitor exclusions)."
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     countries: Annotated[
         list[Country] | None,
         Field(
             description='Countries where rights are needed (ISO 3166-1 alpha-2). Filters to rights available in these markets.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description="Search within a specific brand's rights. If omitted, searches across the agent's full roster."
+        ),
+    ] = None
+    right_type: Annotated[
+        right_type_1.RightType | None,
+        Field(description='Filter by type of rights (talent, music, stock_media, etc.)'),
+    ] = None
     include_excluded: Annotated[
         bool | None,
         Field(
@@ -55,21 +79,5 @@ class GetRightsRequest(AdCPBaseModel):
         pagination_request.PaginationRequest | None,
         Field(description='Pagination parameters for large result sets'),
     ] = None
-    query: Annotated[
-        str,
-        Field(
-            description='Natural language description of desired rights. The agent interprets intent, budget signals, and compatibility from this text.',
-            max_length=2000,
-        ),
-    ]
-    right_type: Annotated[
-        right_type_1.RightType | None,
-        Field(description='Filter by type of rights (talent, music, stock_media, etc.)'),
-    ] = None
-    uses: Annotated[
-        list[right_use.RightUse],
-        Field(
-            description='Rights uses being requested. The agent returns options covering these uses, potentially bundled into composite pricing.',
-            min_length=1,
-        ),
-    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/brand/get_rights_response.py b/src/adcp/types/generated_poc/brand/get_rights_response.py
index 8bc370ad5..23887c6c1 100644
--- a/src/adcp/types/generated_poc/brand/get_rights_response.py
+++ b/src/adcp/types/generated_poc/brand/get_rights_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand/get_rights_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,26 +17,6 @@
 from . import rights_pricing_option
 
 
-class ExcludedItem(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    brand_id: str
-    name: str | None = None
-    reason: Annotated[
-        str,
-        Field(
-            description='Why this result was excluded. May be sanitized to protect confidential brand rules.'
-        ),
-    ]
-    suggestions: Annotated[
-        list[str] | None,
-        Field(
-            description="Actionable alternatives if the exclusion is fixable (e.g., 'Available in BE and DE markets'). Absent if the exclusion is final."
-        ),
-    ] = None
-
-
 class Country(RootModel[str]):
     root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
@@ -66,12 +46,32 @@ class PreviewAsset(AdCPBaseModel):
     usage: str | None = None
 
 
+class ExcludedItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    brand_id: str
+    name: str | None = None
+    reason: Annotated[
+        str,
+        Field(
+            description='Why this result was excluded. May be sanitized to protect confidential brand rules.'
+        ),
+    ]
+    suggestions: Annotated[
+        list[str] | None,
+        Field(
+            description="Actionable alternatives if the exclusion is fixable (e.g., 'Available in BE and DE markets'). Absent if the exclusion is final."
+        ),
+    ] = None
+
+
 class GetRightsResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[list[error.Error], Field(min_length=1)]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -79,61 +79,61 @@ class Right(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    available_uses: Annotated[
-        list[right_use.RightUse], Field(description='Rights uses available for licensing')
+    rights_id: Annotated[
+        str, Field(description='Identifier for this rights offering. Referenced in acquire_rights.')
     ]
     brand_id: Annotated[str, Field(description="Brand identifier from the agent's roster")]
-    content_restrictions: Annotated[
-        list[str] | None, Field(description='Content restrictions or approval requirements')
+    name: Annotated[str, Field(description='Display name of the rights subject')]
+    description: Annotated[str | None, Field(description='Description of the rights subject')] = (
+        None
+    )
+    right_type: right_type_1.RightType | None = None
+    match_score: Annotated[
+        float | None, Field(description='Relevance score from 0 to 1', ge=0.0, le=1.0)
+    ] = None
+    match_reasons: Annotated[
+        list[str] | None, Field(description='Human-readable reasons for the match')
     ] = None
+    available_uses: Annotated[
+        list[right_use.RightUse], Field(description='Rights uses available for licensing')
+    ]
     countries: Annotated[
         list[Country] | None,
         Field(
             description='Countries where rights are available (ISO 3166-1 alpha-2). When both countries and excluded_countries are present, the effective set is countries minus excluded_countries. If neither is present, all countries are available.'
         ),
     ] = None
-    description: Annotated[str | None, Field(description='Description of the rights subject')] = (
-        None
-    )
     excluded_countries: Annotated[
         list[ExcludedCountry] | None, Field(description='Countries excluded from availability')
     ] = None
     exclusivity_status: Annotated[
         ExclusivityStatus | None, Field(description='Current exclusivity availability')
     ] = None
-    match_reasons: Annotated[
-        list[str] | None, Field(description='Human-readable reasons for the match')
-    ] = None
-    match_score: Annotated[
-        float | None, Field(description='Relevance score from 0 to 1', ge=0.0, le=1.0)
-    ] = None
-    name: Annotated[str, Field(description='Display name of the rights subject')]
-    preview_assets: Annotated[
-        list[PreviewAsset] | None, Field(description='Preview-only assets for evaluation')
-    ] = None
     pricing_options: Annotated[
         list[rights_pricing_option.RightsPricingOption],
         Field(description='Available pricing options for these rights', min_length=1),
     ]
-    right_type: right_type_1.RightType | None = None
-    rights_id: Annotated[
-        str, Field(description='Identifier for this rights offering. Referenced in acquire_rights.')
-    ]
+    content_restrictions: Annotated[
+        list[str] | None, Field(description='Content restrictions or approval requirements')
+    ] = None
+    preview_assets: Annotated[
+        list[PreviewAsset] | None, Field(description='Preview-only assets for evaluation')
+    ] = None
 
 
 class GetRightsResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    rights: Annotated[
+        list[Right], Field(description='Matching rights with pricing options, ranked by relevance')
+    ]
     excluded: Annotated[
         list[ExcludedItem] | None,
         Field(description='Results that matched but were filtered out, with reasons'),
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    rights: Annotated[
-        list[Right], Field(description='Matching rights with pricing options, ranked by relevance')
-    ]
 
 
 GetRightsResponse = GetRightsResponse1 | GetRightsResponse2
diff --git a/src/adcp/types/generated_poc/brand/revocation_notification.py b/src/adcp/types/generated_poc/brand/revocation_notification.py
new file mode 100644
index 000000000..0c381897e
--- /dev/null
+++ b/src/adcp/types/generated_poc/brand/revocation_notification.py
@@ -0,0 +1,44 @@
+# generated by datamodel-codegen:
+#   filename:  brand/revocation_notification.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+from ..enums import right_use
+
+
+class RevocationNotification(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    notification_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this notification. Buyers use this for deduplication — the same revocation may be delivered multiple times.'
+        ),
+    ]
+    rights_id: Annotated[str, Field(description='The revoked rights grant identifier')]
+    brand_id: Annotated[str, Field(description='Brand identifier of the rights subject')]
+    reason: Annotated[str, Field(description='Human-readable reason for revocation')]
+    effective_at: Annotated[
+        AwareDatetime,
+        Field(
+            description='When the revocation takes effect. Immediate revocations use current time. Grace periods use a future time. The buyer must stop serving creative using these rights by this time.'
+        ),
+    ]
+    revoked_uses: Annotated[
+        list[right_use.RightUse] | None,
+        Field(
+            description='If present, only these uses are revoked (partial revocation). If absent, all uses under the grant are revoked.',
+            min_length=1,
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/brand/rights_pricing_option.py b/src/adcp/types/generated_poc/brand/rights_pricing_option.py
index 9c392229d..8ef371891 100644
--- a/src/adcp/types/generated_poc/brand/rights_pricing_option.py
+++ b/src/adcp/types/generated_poc/brand/rights_pricing_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand/rights_pricing_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -27,25 +27,15 @@ class RightsPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
-    description: Annotated[
-        str | None, Field(description='Human-readable description of this pricing option')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    impression_cap: Annotated[
-        int | None,
-        Field(description='Maximum impressions included in this pricing option per period', ge=1),
-    ] = None
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this pricing option. Referenced in acquire_rights and report_usage.'
+        ),
+    ]
     model: Annotated[
         pricing_model.PricingModel, Field(description='Pricing model (cpm, flat_rate, etc.)')
     ]
-    overage_cpm: Annotated[
-        float | None,
-        Field(description='CPM rate applied to impressions exceeding the impression_cap', ge=0.0),
-    ] = None
-    period: Annotated[
-        Period | None, Field(description='Billing period for flat_rate and time-based models')
-    ] = None
     price: Annotated[
         float,
         Field(
@@ -53,12 +43,7 @@ class RightsPricingOption(AdCPBaseModel):
             ge=0.0,
         ),
     ]
-    pricing_option_id: Annotated[
-        str,
-        Field(
-            description='Unique identifier for this pricing option. Referenced in acquire_rights and report_usage.'
-        ),
-    ]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
     uses: Annotated[
         list[right_use.RightUse],
         Field(
@@ -66,3 +51,18 @@ class RightsPricingOption(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    period: Annotated[
+        Period | None, Field(description='Billing period for flat_rate and time-based models')
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(description='Maximum impressions included in this pricing option per period', ge=1),
+    ] = None
+    overage_cpm: Annotated[
+        float | None,
+        Field(description='CPM rate applied to impressions exceeding the impression_cap', ge=0.0),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Human-readable description of this pricing option')
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/brand/rights_terms.py b/src/adcp/types/generated_poc/brand/rights_terms.py
index d8aea13ee..75bc6762a 100644
--- a/src/adcp/types/generated_poc/brand/rights_terms.py
+++ b/src/adcp/types/generated_poc/brand/rights_terms.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  brand/rights_terms.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,6 +14,15 @@
 from ..enums import right_use
 
 
+class Period(Enum):
+    daily = 'daily'
+    weekly = 'weekly'
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    one_time = 'one_time'
+
+
 class Country(RootModel[str]):
     root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
@@ -22,32 +31,23 @@ class Exclusivity(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    countries: list[Country] | None = None
     scope: str | None = None
-
-
-class Period(Enum):
-    daily = 'daily'
-    weekly = 'weekly'
-    monthly = 'monthly'
-    quarterly = 'quarterly'
-    annual = 'annual'
-    one_time = 'one_time'
+    countries: list[Country] | None = None
 
 
 class RightsTerms(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: str
     amount: Annotated[float, Field(ge=0.0)]
     currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
+    period: Period | None = None
+    uses: list[right_use.RightUse]
+    impression_cap: Annotated[int | None, Field(ge=1)] = None
+    overage_cpm: Annotated[float | None, Field(ge=0.0)] = None
+    start_date: date_aliased | None = None
     end_date: date_aliased | None = None
     exclusivity: Annotated[
         Exclusivity | None, Field(description='Exclusivity terms if applicable')
     ] = None
-    impression_cap: Annotated[int | None, Field(ge=1)] = None
-    overage_cpm: Annotated[float | None, Field(ge=0.0)] = None
-    period: Period | None = None
-    pricing_option_id: str
-    start_date: date_aliased | None = None
-    uses: list[right_use.RightUse]
diff --git a/src/adcp/types/generated_poc/brand/update_rights_request.py b/src/adcp/types/generated_poc/brand/update_rights_request.py
new file mode 100644
index 000000000..65b8476fc
--- /dev/null
+++ b/src/adcp/types/generated_poc/brand/update_rights_request.py
@@ -0,0 +1,72 @@
+# generated by datamodel-codegen:
+#   filename:  brand/update_rights_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from datetime import date as date_aliased
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+from ..core import push_notification_config as push_notification_config_1
+
+
+class UpdateRightsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from acquire_rights response')
+    ]
+    end_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='New end date for the rights grant (must be >= current end_date). Extending the grant may re-issue generation credentials with updated expiration.'
+        ),
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(
+            description='New impression cap for the grant. Must be >= impressions already delivered.',
+            ge=1,
+        ),
+    ] = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description="Switch to a different pricing option from the original get_rights offering. The new option must be compatible with the existing grant's uses and countries."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(
+            description='Pause or resume the rights grant. When paused, generation credentials are suspended and creative delivery should stop. When resumed, credentials are re-activated.'
+        ),
+    ] = None
+    push_notification_config: Annotated[
+        push_notification_config_1.PushNotificationConfig | None,
+        Field(description='Webhook for async update notifications if the update requires approval'),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated idempotency key for safe retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/brand/update_rights_response.py b/src/adcp/types/generated_poc/brand/update_rights_response.py
new file mode 100644
index 000000000..b2adf15bd
--- /dev/null
+++ b/src/adcp/types/generated_poc/brand/update_rights_response.py
@@ -0,0 +1,64 @@
+# generated by datamodel-codegen:
+#   filename:  brand/update_rights_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import error
+from ..core import ext as ext_1
+from ..core import generation_credential
+from ..core import rights_constraint as rights_constraint_1
+from . import rights_terms
+
+
+class UpdateRightsResponse2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[list[error.Error], Field(min_length=1)]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+class UpdateRightsResponse1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights_id: Annotated[str, Field(description='Rights grant identifier')]
+    terms: Annotated[
+        rights_terms.RightsTerms,
+        Field(
+            description='Updated contractual terms (same shape as acquire_rights acquired response)'
+        ),
+    ]
+    generation_credentials: Annotated[
+        list[generation_credential.GenerationCredential] | None,
+        Field(
+            description='Re-issued credentials reflecting updated terms (new expiration dates, adjusted caps)'
+        ),
+    ] = None
+    rights_constraint: Annotated[
+        rights_constraint_1.RightsConstraint | None,
+        Field(description='Updated rights constraint for re-embedding in creative manifests'),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(
+            description='Whether the grant is currently paused. Included when the update changes pause state.'
+        ),
+    ] = None
+    implementation_date: Annotated[
+        AwareDatetime | None,
+        Field(description='When changes take effect (null if pending approval from rights holder)'),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+UpdateRightsResponse = UpdateRightsResponse1 | UpdateRightsResponse2
diff --git a/src/adcp/types/generated_poc/bundled/__init__.py b/src/adcp/types/generated_poc/bundled/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/__init__.py b/src/adcp/types/generated_poc/bundled/content_standards/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/calibrate_content_request.py b/src/adcp/types/generated_poc/bundled/content_standards/calibrate_content_request.py
new file mode 100644
index 000000000..a4b731739
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/calibrate_content_request.py
@@ -0,0 +1,1107 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/calibrate_content_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Role(Enum):
+    title = 'title'
+    paragraph = 'paragraph'
+    heading = 'heading'
+    caption = 'caption'
+    quote = 'quote'
+    list_item = 'list_item'
+    description = 'description'
+
+
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role48(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role48, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy43(DeclaredBy):
+    pass
+
+
+class RenderGuidance43(RenderGuidance):
+    pass
+
+
+class Jurisdiction46(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance43 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure44(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction46] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem43(VerificationItem):
+    pass
+
+
+class Provenance44(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy43 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure44 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem43] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    application_json = 'application/json'
+
+
+class TranscriptSource(Enum):
+    original_script = 'original_script'
+    subtitles = 'subtitles'
+    closed_captions = 'closed_captions'
+    dub = 'dub'
+    generated = 'generated'
+
+
+class DeclaredBy44(DeclaredBy):
+    pass
+
+
+class RenderGuidance44(RenderGuidance):
+    pass
+
+
+class Jurisdiction47(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance44 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure45(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction47] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem44(VerificationItem):
+    pass
+
+
+class Provenance45(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy44 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure45 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem44] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptSource3(Enum):
+    original_script = 'original_script'
+    closed_captions = 'closed_captions'
+    generated = 'generated'
+
+
+class DeclaredBy45(DeclaredBy):
+    pass
+
+
+class RenderGuidance45(RenderGuidance):
+    pass
+
+
+class Jurisdiction48(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance45 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure46(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction48] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem45(VerificationItem):
+    pass
+
+
+class Provenance46(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy45 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure46 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem45] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Metadata(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
+    keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
+    open_graph: Annotated[
+        dict[str, Any] | None, Field(description='Open Graph protocol metadata')
+    ] = None
+    twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
+        None
+    )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class DeclaredBy46(DeclaredBy):
+    pass
+
+
+class RenderGuidance46(RenderGuidance):
+    pass
+
+
+class Jurisdiction49(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance46 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure47(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction49] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem46(VerificationItem):
+    pass
+
+
+class Provenance47(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy46 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure47 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem46] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
+
+
+class AssetAccess(RootModel[Any]):
+    root: Any
+
+
+class Assets53(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance44 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets54(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance45 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets55(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource3 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance46 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Artifact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets | Assets53 | Assets54 | Assets55],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance47 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class CalibrateContentRequest(AdCPBaseModel):
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    standards_id: Annotated[str, Field(description='Standards configuration to calibrate against')]
+    artifact: Annotated[Artifact, Field(description='Artifact to evaluate', title='Artifact')]
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/calibrate_content_response.py b/src/adcp/types/generated_poc/bundled/content_standards/calibrate_content_response.py
new file mode 100644
index 000000000..5148f6c2e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/calibrate_content_response.py
@@ -0,0 +1,147 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/calibrate_content_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Verdict(Enum):
+    pass_ = 'pass'
+    fail = 'fail'
+
+
+class Status(Enum):
+    passed = 'passed'
+    failed = 'failed'
+    warning = 'warning'
+    unevaluated = 'unevaluated'
+
+
+class Feature(AdCPBaseModel):
+    feature_id: Annotated[
+        str,
+        Field(
+            description="Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'competitor_adjacency'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact'. Reserved prefixes: 'record:', 'delivery:'."
+        ),
+    ]
+    status: Annotated[Status, Field(description='Evaluation status for this feature')]
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Policy ID that triggered this result. Enables the calibration loop to iterate on specific policies by correlating sample outcomes to policy ids.'
+        ),
+    ] = None
+    explanation: Annotated[
+        str | None,
+        Field(description='Human-readable explanation of why this feature passed or failed'),
+    ] = None
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+
+
+class CalibrateContentResponse3(AdCPBaseModel):
+    verdict: Annotated[
+        Verdict, Field(description='Overall pass/fail verdict for the content evaluation')
+    ]
+    confidence: Annotated[
+        float | None, Field(description='Model confidence in the verdict (0-1)', ge=0.0, le=1.0)
+    ] = None
+    explanation: Annotated[
+        str | None, Field(description='Detailed natural language explanation of the decision')
+    ] = None
+    features: Annotated[
+        list[Feature] | None,
+        Field(
+            description='Per-feature breakdown with explanations. Mirrors validate_content_delivery feature shape so calibration loops can correlate against production verdicts by policy_id.'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class CalibrateContentResponse4(AdCPBaseModel):
+    errors: list[Error]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+CalibrateContentResponse = CalibrateContentResponse3 | CalibrateContentResponse4
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/create_content_standards_request.py b/src/adcp/types/generated_poc/bundled/content_standards/create_content_standards_request.py
new file mode 100644
index 000000000..cdd1c580c
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/create_content_standards_request.py
@@ -0,0 +1,2185 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/create_content_standards_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from datetime import date as date_aliased
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class Scope(AdCPBaseModel):
+    countries_all: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels. Standards apply to ANY of the listed channels (OR logic).',
+            min_length=1,
+        ),
+    ] = None
+    languages_any: Annotated[
+        list[str],
+        Field(
+            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
+            min_length=1,
+        ),
+    ]
+    description: Annotated[
+        str | None, Field(description='Human-readable description of this scope')
+    ] = None
+
+
+class Source(Enum):
+    registry = 'registry'
+    inline = 'inline'
+
+
+class Category(Enum):
+    regulation = 'regulation'
+    standard = 'standard'
+
+
+class Enforcement(Enum):
+    must = 'must'
+    should = 'should'
+    may = 'may'
+
+
+class GovernanceDomain(Enum):
+    campaign = 'campaign'
+    property = 'property'
+    creative = 'creative'
+    content_standards = 'content_standards'
+
+
+class Pass(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
+        Field(
+            description="Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
+        ),
+    ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
+    ] = None
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Role(Enum):
+    title = 'title'
+    paragraph = 'paragraph'
+    heading = 'heading'
+    caption = 'caption'
+    quote = 'quote'
+    list_item = 'list_item'
+    description = 'description'
+
+
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role54(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role54, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy48(DeclaredBy):
+    pass
+
+
+class RenderGuidance48(RenderGuidance):
+    pass
+
+
+class Jurisdiction51(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance48 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure49(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction51] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem48(VerificationItem):
+    pass
+
+
+class Provenance49(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy48 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure49 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem48] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    application_json = 'application/json'
+
+
+class TranscriptSource(Enum):
+    original_script = 'original_script'
+    subtitles = 'subtitles'
+    closed_captions = 'closed_captions'
+    dub = 'dub'
+    generated = 'generated'
+
+
+class DeclaredBy49(DeclaredBy):
+    pass
+
+
+class RenderGuidance49(RenderGuidance):
+    pass
+
+
+class Jurisdiction52(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance49 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure50(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction52] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem49(VerificationItem):
+    pass
+
+
+class Provenance50(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy49 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure50 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem49] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptSource5(Enum):
+    original_script = 'original_script'
+    closed_captions = 'closed_captions'
+    generated = 'generated'
+
+
+class DeclaredBy50(DeclaredBy):
+    pass
+
+
+class RenderGuidance50(RenderGuidance):
+    pass
+
+
+class Jurisdiction53(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance50 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure51(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction53] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem50(VerificationItem):
+    pass
+
+
+class Provenance51(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy50 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure51 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem50] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Metadata(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
+    keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
+    open_graph: Annotated[
+        dict[str, Any] | None, Field(description='Open Graph protocol metadata')
+    ] = None
+    twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
+        None
+    )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class DeclaredBy51(DeclaredBy):
+    pass
+
+
+class RenderGuidance51(RenderGuidance):
+    pass
+
+
+class Jurisdiction54(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance51 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure52(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction54] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem51(VerificationItem):
+    pass
+
+
+class Provenance52(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy51 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure52 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem51] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
+
+
+class Fail(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
+        Field(
+            description="Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+        ),
+    ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
+    ] = None
+
+
+class DeclaredBy52(DeclaredBy):
+    pass
+
+
+class RenderGuidance52(RenderGuidance):
+    pass
+
+
+class Jurisdiction55(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance52 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure53(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction55] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem52(VerificationItem):
+    pass
+
+
+class Provenance53(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy52 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure53 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem52] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets60(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance53 | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy53(DeclaredBy):
+    pass
+
+
+class RenderGuidance53(RenderGuidance):
+    pass
+
+
+class Jurisdiction56(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance53 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure54(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction56] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem53(VerificationItem):
+    pass
+
+
+class Provenance54(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy53 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure54 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem53] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy54(DeclaredBy):
+    pass
+
+
+class RenderGuidance54(RenderGuidance):
+    pass
+
+
+class Jurisdiction57(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance54 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure55(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction57] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem54(VerificationItem):
+    pass
+
+
+class Provenance55(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy54 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure55 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem54] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy55(DeclaredBy):
+    pass
+
+
+class RenderGuidance55(RenderGuidance):
+    pass
+
+
+class Jurisdiction58(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance55 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure56(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction58] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem55(VerificationItem):
+    pass
+
+
+class Provenance56(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy55 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure56 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem55] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy56(DeclaredBy):
+    pass
+
+
+class RenderGuidance56(RenderGuidance):
+    pass
+
+
+class Jurisdiction59(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance56 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure57(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction59] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem56(VerificationItem):
+    pass
+
+
+class Provenance57(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy56 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure57 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem56] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class AssetAccess(RootModel[Any]):
+    root: Any
+
+
+class Exemplar(AssetAccess):
+    pass
+
+
+class Exemplars(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    pass_: Annotated[
+        list[Exemplar] | None,
+        Field(alias='pass', description='Scenarios that comply with this policy.'),
+    ] = None
+    fail: Annotated[
+        list[Exemplar] | None, Field(description='Scenarios that violate this policy.')
+    ] = None
+
+
+class Policy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    policy_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this policy. Registry-published ids are canonical (e.g., "uk_hfss", "garm:brand_safety:violence"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio).'
+        ),
+    ]
+    source: Annotated[
+        Source | None,
+        Field(
+            description="Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+        ),
+    ] = Source.inline
+    version: Annotated[
+        str | None,
+        Field(
+            description='Semver version string (e.g., "1.0.0"). Incremented when policy content changes. Optional for inline bespoke policies — defaults to "1.0.0". SHOULD be provided for registry-published policies.'
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description='Human-readable name (e.g., "UK HFSS Restrictions"). Optional for inline bespoke policies — servers MAY default to policy_id.'
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Brief summary of what this policy covers.')
+    ] = None
+    category: Annotated[
+        Category | None,
+        Field(
+            description='The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies — defaults to "standard".',
+            title='Policy Category',
+        ),
+    ] = None
+    enforcement: Annotated[
+        Enforcement,
+        Field(
+            description='How governance agents treat violations. Regulations are typically "must"; standards are typically "should".',
+            title='Policy Enforcement Level',
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific.'
+        ),
+    ] = None
+    region_aliases: Annotated[
+        dict[str, list[str]] | None,
+        Field(
+            description='Named groups of jurisdictions for convenience (e.g., {"EU": ["AT","BE","BG",...]}). Governance agents expand aliases when matching against a plan\'s target jurisdictions.'
+        ),
+    ] = None
+    policy_categories: Annotated[
+        list[str] | None,
+        Field(
+            description='Regulatory categories this policy belongs to (e.g., ["children_directed", "age_restricted"]). Used for automatic matching against a campaign plan\'s declared policy_categories. A single policy can belong to multiple categories.'
+        ),
+    ] = None
+    channels: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.'
+        ),
+    ] = None
+    governance_domains: Annotated[
+        list[GovernanceDomain] | None,
+        Field(
+            description='Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains ["creative", "property"] can be declared as a feature by both creative and property governance agents.'
+        ),
+    ] = None
+    effective_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level.'
+        ),
+    ] = None
+    sunset_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration.'
+        ),
+    ] = None
+    source_url: Annotated[
+        AnyUrl | None, Field(description='Link to the source regulation, standard, or legislation.')
+    ] = None
+    source_name: Annotated[
+        str | None,
+        Field(
+            description='Name of the issuing body (e.g., "UK Food Standards Agency", "US Federal Trade Commission").'
+        ),
+    ] = None
+    policy: Annotated[
+        str,
+        Field(
+            description='Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy.'
+        ),
+    ]
+    guidance: Annotated[
+        str | None,
+        Field(
+            description='Implementation notes for governance agent developers. Not used in evaluation prompts.'
+        ),
+    ] = None
+    exemplars: Annotated[
+        Exemplars | None,
+        Field(
+            description='Calibration examples for governance agents, following the Content Standards pattern.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets57(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance49 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets58(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance50 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets59(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource5 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance51 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Pass2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets | Assets57 | Assets58 | Assets59],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance52 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class Assets61(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance54 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets62(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance55 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets63(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource5 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance56 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Fail2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets60 | Assets61 | Assets62 | Assets63],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance57 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class CalibrationExemplars(AdCPBaseModel):
+    pass_: Annotated[
+        list[Pass | Pass2] | None,
+        Field(alias='pass', description='Content that passes the standards'),
+    ] = None
+    fail: Annotated[
+        list[Fail | Fail2] | None, Field(description='Content that fails the standards')
+    ] = None
+
+
+class CreateContentStandardsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    scope: Annotated[Scope, Field(description='Where this standards configuration applies')]
+    registry_policy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Registry policy IDs to use as the evaluation basis for this content standard. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria. The 'policy' field becomes optional when registry_policy_ids is provided."
+        ),
+    ] = None
+    policies: Annotated[
+        list[Policy] | None,
+        Field(
+            description='Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id and carries its own enforcement (must|should); governance findings reference the policy_id that triggered them. Inline bespoke policies can omit version/name/category (defaulted by the server). Combines with registry_policy_ids — registry policies and bespoke policies are both evaluated. Bespoke policy_ids MUST be flat (no colons/slashes) to avoid collision with namespaced registry ids.',
+            min_length=1,
+        ),
+    ] = None
+    calibration_exemplars: Annotated[
+        CalibrationExemplars | None,
+        Field(
+            description='Training/test set to calibrate policy interpretation. Use URL references for pages to be fetched and analyzed, or full artifacts for pre-extracted content.'
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate content standards creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/create_content_standards_response.py b/src/adcp/types/generated_poc/bundled/content_standards/create_content_standards_response.py
new file mode 100644
index 000000000..670fcf8bf
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/create_content_standards_response.py
@@ -0,0 +1,101 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/create_content_standards_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class CreateContentStandardsResponse3(AdCPBaseModel):
+    standards_id: Annotated[
+        str, Field(description='Unique identifier for the created standards configuration')
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class CreateContentStandardsResponse4(AdCPBaseModel):
+    errors: list[Error]
+    conflicting_standards_id: Annotated[
+        str | None,
+        Field(
+            description='If the error is a scope conflict, the ID of the existing standards that conflict'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+CreateContentStandardsResponse = CreateContentStandardsResponse3 | CreateContentStandardsResponse4
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/get_content_standards_request.py b/src/adcp/types/generated_poc/bundled/content_standards/get_content_standards_request.py
new file mode 100644
index 000000000..b54c2b01b
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/get_content_standards_request.py
@@ -0,0 +1,38 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/get_content_standards_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import Field
+
+
+class GetContentStandardsRequest(AdCPBaseModel):
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    standards_id: Annotated[
+        str, Field(description='Identifier for the standards configuration to retrieve')
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/get_content_standards_response.py b/src/adcp/types/generated_poc/bundled/content_standards/get_content_standards_response.py
new file mode 100644
index 000000000..ff2c442f2
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/get_content_standards_response.py
@@ -0,0 +1,2336 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/get_content_standards_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from datetime import date as date_aliased
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class Source(Enum):
+    registry = 'registry'
+    inline = 'inline'
+
+
+class Category(Enum):
+    regulation = 'regulation'
+    standard = 'standard'
+
+
+class Enforcement(Enum):
+    must = 'must'
+    should = 'should'
+    may = 'may'
+
+
+class GovernanceDomain(Enum):
+    campaign = 'campaign'
+    property = 'property'
+    creative = 'creative'
+    content_standards = 'content_standards'
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Role(Enum):
+    title = 'title'
+    paragraph = 'paragraph'
+    heading = 'heading'
+    caption = 'caption'
+    quote = 'quote'
+    list_item = 'list_item'
+    description = 'description'
+
+
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role84(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role84, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy72(DeclaredBy):
+    pass
+
+
+class RenderGuidance72(RenderGuidance):
+    pass
+
+
+class Jurisdiction77(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance72 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure73(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction77] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem72(VerificationItem):
+    pass
+
+
+class Provenance73(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy72 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure73 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem72] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    application_json = 'application/json'
+
+
+class TranscriptSource(Enum):
+    original_script = 'original_script'
+    subtitles = 'subtitles'
+    closed_captions = 'closed_captions'
+    dub = 'dub'
+    generated = 'generated'
+
+
+class DeclaredBy73(DeclaredBy):
+    pass
+
+
+class RenderGuidance73(RenderGuidance):
+    pass
+
+
+class Jurisdiction78(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance73 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure74(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction78] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem73(VerificationItem):
+    pass
+
+
+class Provenance74(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy73 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure74 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem73] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptSource9(Enum):
+    original_script = 'original_script'
+    closed_captions = 'closed_captions'
+    generated = 'generated'
+
+
+class DeclaredBy74(DeclaredBy):
+    pass
+
+
+class RenderGuidance74(RenderGuidance):
+    pass
+
+
+class Jurisdiction79(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance74 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure75(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction79] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem74(VerificationItem):
+    pass
+
+
+class Provenance75(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy74 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure75 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem74] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Metadata(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
+    keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
+    open_graph: Annotated[
+        dict[str, Any] | None, Field(description='Open Graph protocol metadata')
+    ] = None
+    twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
+        None
+    )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class DeclaredBy75(DeclaredBy):
+    pass
+
+
+class RenderGuidance75(RenderGuidance):
+    pass
+
+
+class Jurisdiction80(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance75 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure76(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction80] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem75(VerificationItem):
+    pass
+
+
+class Provenance76(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy75 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure76 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem75] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
+
+
+class DeclaredBy76(DeclaredBy):
+    pass
+
+
+class RenderGuidance76(RenderGuidance):
+    pass
+
+
+class Jurisdiction81(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance76 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure77(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction81] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem76(VerificationItem):
+    pass
+
+
+class Provenance77(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy76 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure77 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem76] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets111(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance77 | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy77(DeclaredBy):
+    pass
+
+
+class RenderGuidance77(RenderGuidance):
+    pass
+
+
+class Jurisdiction82(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance77 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure78(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction82] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem77(VerificationItem):
+    pass
+
+
+class Provenance78(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy77 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure78 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem77] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy78(DeclaredBy):
+    pass
+
+
+class RenderGuidance78(RenderGuidance):
+    pass
+
+
+class Jurisdiction83(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance78 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure79(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction83] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem78(VerificationItem):
+    pass
+
+
+class Provenance79(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy78 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure79 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem78] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy79(DeclaredBy):
+    pass
+
+
+class RenderGuidance79(RenderGuidance):
+    pass
+
+
+class Jurisdiction84(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance79 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure80(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction84] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem79(VerificationItem):
+    pass
+
+
+class Provenance80(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy79 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure80 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem79] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy80(DeclaredBy):
+    pass
+
+
+class RenderGuidance80(RenderGuidance):
+    pass
+
+
+class Jurisdiction85(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance80 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure81(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction85] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem80(VerificationItem):
+    pass
+
+
+class Provenance81(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy80 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure81 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem80] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption101(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption102(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption103(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption104(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption105(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption106(PricingOption101, PricingOption105):
+    pass
+
+
+class PricingOption107(PricingOption102, PricingOption105):
+    pass
+
+
+class PricingOption108(PricingOption103, PricingOption105):
+    pass
+
+
+class PricingOption109(PricingOption104, PricingOption105):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption106 | PricingOption107 | PricingOption108 | PricingOption109]
+):
+    root: Annotated[
+        PricingOption106 | PricingOption107 | PricingOption108 | PricingOption109,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class GetContentStandardsResponse4(AdCPBaseModel):
+    errors: list[Error]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class AssetAccess(RootModel[Any]):
+    root: Any
+
+
+class Exemplar(AssetAccess):
+    pass
+
+
+class Exemplars(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    pass_: Annotated[
+        list[Exemplar] | None,
+        Field(alias='pass', description='Scenarios that comply with this policy.'),
+    ] = None
+    fail: Annotated[
+        list[Exemplar] | None, Field(description='Scenarios that violate this policy.')
+    ] = None
+
+
+class Policy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    policy_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this policy. Registry-published ids are canonical (e.g., "uk_hfss", "garm:brand_safety:violence"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio).'
+        ),
+    ]
+    source: Annotated[
+        Source | None,
+        Field(
+            description="Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+        ),
+    ] = Source.inline
+    version: Annotated[
+        str | None,
+        Field(
+            description='Semver version string (e.g., "1.0.0"). Incremented when policy content changes. Optional for inline bespoke policies — defaults to "1.0.0". SHOULD be provided for registry-published policies.'
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description='Human-readable name (e.g., "UK HFSS Restrictions"). Optional for inline bespoke policies — servers MAY default to policy_id.'
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Brief summary of what this policy covers.')
+    ] = None
+    category: Annotated[
+        Category | None,
+        Field(
+            description='The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies — defaults to "standard".',
+            title='Policy Category',
+        ),
+    ] = None
+    enforcement: Annotated[
+        Enforcement,
+        Field(
+            description='How governance agents treat violations. Regulations are typically "must"; standards are typically "should".',
+            title='Policy Enforcement Level',
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific.'
+        ),
+    ] = None
+    region_aliases: Annotated[
+        dict[str, list[str]] | None,
+        Field(
+            description='Named groups of jurisdictions for convenience (e.g., {"EU": ["AT","BE","BG",...]}). Governance agents expand aliases when matching against a plan\'s target jurisdictions.'
+        ),
+    ] = None
+    policy_categories: Annotated[
+        list[str] | None,
+        Field(
+            description='Regulatory categories this policy belongs to (e.g., ["children_directed", "age_restricted"]). Used for automatic matching against a campaign plan\'s declared policy_categories. A single policy can belong to multiple categories.'
+        ),
+    ] = None
+    channels: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.'
+        ),
+    ] = None
+    governance_domains: Annotated[
+        list[GovernanceDomain] | None,
+        Field(
+            description='Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains ["creative", "property"] can be declared as a feature by both creative and property governance agents.'
+        ),
+    ] = None
+    effective_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level.'
+        ),
+    ] = None
+    sunset_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration.'
+        ),
+    ] = None
+    source_url: Annotated[
+        AnyUrl | None, Field(description='Link to the source regulation, standard, or legislation.')
+    ] = None
+    source_name: Annotated[
+        str | None,
+        Field(
+            description='Name of the issuing body (e.g., "UK Food Standards Agency", "US Federal Trade Commission").'
+        ),
+    ] = None
+    policy: Annotated[
+        str,
+        Field(
+            description='Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy.'
+        ),
+    ]
+    guidance: Annotated[
+        str | None,
+        Field(
+            description='Implementation notes for governance agent developers. Not used in evaluation prompts.'
+        ),
+    ] = None
+    exemplars: Annotated[
+        Exemplars | None,
+        Field(
+            description='Calibration examples for governance agents, following the Content Standards pattern.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets108(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance73 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets109(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance74 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets110(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource9 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance75 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Pas(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets | Assets108 | Assets109 | Assets110],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance76 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class Assets112(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance78 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets113(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance79 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets114(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource9 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance80 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FailItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets111 | Assets112 | Assets113 | Assets114],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance81 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class CalibrationExemplars(AdCPBaseModel):
+    pass_: Annotated[
+        list[Pas] | None,
+        Field(alias='pass', description='Artifacts that pass the content standards'),
+    ] = None
+    fail: Annotated[
+        list[FailItem] | None, Field(description='Artifacts that fail the content standards')
+    ] = None
+
+
+class GetContentStandardsResponse3(AdCPBaseModel):
+    standards_id: Annotated[
+        str, Field(description='Unique identifier for this standards configuration')
+    ]
+    name: Annotated[
+        str | None, Field(description='Human-readable name for this standards configuration')
+    ] = None
+    countries_all: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels. Standards apply to ANY of the listed channels (OR logic).',
+            min_length=1,
+        ),
+    ] = None
+    languages_any: Annotated[
+        list[str] | None,
+        Field(
+            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
+            min_length=1,
+        ),
+    ] = None
+    policies: Annotated[
+        list[Policy] | None,
+        Field(
+            description='Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id; governance findings reference the policy_id that triggered them.',
+            min_length=1,
+        ),
+    ] = None
+    calibration_exemplars: Annotated[
+        CalibrationExemplars | None,
+        Field(
+            description='Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.'
+        ),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this content standards service. The buyer passes the selected pricing_option_id in report_usage for billing verification.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+
+
+GetContentStandardsResponse = GetContentStandardsResponse3 | GetContentStandardsResponse4
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/get_media_buy_artifacts_request.py b/src/adcp/types/generated_poc/bundled/content_standards/get_media_buy_artifacts_request.py
new file mode 100644
index 000000000..949191509
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/get_media_buy_artifacts_request.py
@@ -0,0 +1,161 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/get_media_buy_artifacts_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account15(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class TimeRange(AdCPBaseModel):
+    start: Annotated[AwareDatetime | None, Field(description='Start of time range (inclusive)')] = (
+        None
+    )
+    end: Annotated[AwareDatetime | None, Field(description='End of time range (exclusive)')] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None,
+        Field(description='Maximum number of artifacts to return per page', ge=1, le=10000),
+    ] = 1000
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class GetMediaBuyArtifactsRequest(AdCPBaseModel):
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account15 | None,
+        Field(
+            description='Filter artifacts to a specific account. When omitted, returns artifacts across all accessible accounts.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    media_buy_id: Annotated[str, Field(description='Media buy to get artifacts from')]
+    package_ids: Annotated[
+        list[str] | None,
+        Field(description='Filter to specific packages within the media buy', min_length=1),
+    ] = None
+    failures_only: Annotated[
+        bool | None,
+        Field(
+            description="When true, only return artifacts where the seller's local model returned local_verdict: 'fail'. Useful for auditing false positives. Not useful when the seller does not run a local evaluation model (all verdicts are 'unevaluated')."
+        ),
+    ] = False
+    time_range: Annotated[TimeRange | None, Field(description='Filter to specific time period')] = (
+        None
+    )
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Pagination parameters. Uses higher limits than standard pagination because artifact result sets can be very large.'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/get_media_buy_artifacts_response.py b/src/adcp/types/generated_poc/bundled/content_standards/get_media_buy_artifacts_response.py
new file mode 100644
index 000000000..ef739980a
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/get_media_buy_artifacts_response.py
@@ -0,0 +1,1250 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/get_media_buy_artifacts_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Role(Enum):
+    title = 'title'
+    paragraph = 'paragraph'
+    heading = 'heading'
+    caption = 'caption'
+    quote = 'quote'
+    list_item = 'list_item'
+    description = 'description'
+
+
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role126(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role126, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy110(DeclaredBy):
+    pass
+
+
+class RenderGuidance110(RenderGuidance):
+    pass
+
+
+class Jurisdiction117(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance110 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure111(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction117] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem110(VerificationItem):
+    pass
+
+
+class Provenance111(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy110 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure111 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem110] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    application_json = 'application/json'
+
+
+class TranscriptSource(Enum):
+    original_script = 'original_script'
+    subtitles = 'subtitles'
+    closed_captions = 'closed_captions'
+    dub = 'dub'
+    generated = 'generated'
+
+
+class DeclaredBy111(DeclaredBy):
+    pass
+
+
+class RenderGuidance111(RenderGuidance):
+    pass
+
+
+class Jurisdiction118(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance111 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure112(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction118] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem111(VerificationItem):
+    pass
+
+
+class Provenance112(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy111 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure112 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem111] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptSource13(Enum):
+    original_script = 'original_script'
+    closed_captions = 'closed_captions'
+    generated = 'generated'
+
+
+class DeclaredBy112(DeclaredBy):
+    pass
+
+
+class RenderGuidance112(RenderGuidance):
+    pass
+
+
+class Jurisdiction119(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance112 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure113(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction119] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem112(VerificationItem):
+    pass
+
+
+class Provenance113(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy112 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure113 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem112] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Metadata(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
+    keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
+    open_graph: Annotated[
+        dict[str, Any] | None, Field(description='Open Graph protocol metadata')
+    ] = None
+    twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
+        None
+    )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class DeclaredBy113(DeclaredBy):
+    pass
+
+
+class RenderGuidance113(RenderGuidance):
+    pass
+
+
+class Jurisdiction120(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance113 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure114(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction120] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem113(VerificationItem):
+    pass
+
+
+class Provenance114(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy113 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure114 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem113] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
+
+
+class BrandContext(AdCPBaseModel):
+    brand_id: Annotated[str | None, Field(description='Brand identifier')] = None
+    sku_id: Annotated[str | None, Field(description='Product/SKU identifier if applicable')] = None
+
+
+class LocalVerdict(Enum):
+    pass_ = 'pass'
+    fail = 'fail'
+    unevaluated = 'unevaluated'
+
+
+class CollectionInfo(AdCPBaseModel):
+    total_deliveries: Annotated[
+        int | None, Field(description='Total deliveries in the requested time range')
+    ] = None
+    total_collected: Annotated[
+        int | None,
+        Field(description="Total artifacts collected (per the buy's sampling configuration)"),
+    ] = None
+    returned_count: Annotated[
+        int | None,
+        Field(
+            description='Number of artifacts in this response (may be less than total_collected due to pagination or filters)'
+        ),
+    ] = None
+    effective_rate: Annotated[
+        float | None,
+        Field(description='Actual collection rate achieved (total_collected / total_deliveries)'),
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class GetMediaBuyArtifactsResponse4(AdCPBaseModel):
+    errors: list[Error]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class AssetAccess(RootModel[Any]):
+    root: Any
+
+
+class Assets148(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance111 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets149(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance112 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets150(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource13 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance113 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Artifact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets | Assets148 | Assets149 | Assets150],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance114 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class Artifact6(AdCPBaseModel):
+    record_id: Annotated[str, Field(description='Unique identifier for this delivery record')]
+    timestamp: Annotated[AwareDatetime | None, Field(description='When the delivery occurred')] = (
+        None
+    )
+    package_id: Annotated[
+        str | None, Field(description='Which package this delivery belongs to')
+    ] = None
+    artifact: Annotated[
+        Artifact, Field(description='Full artifact with content assets', title='Artifact')
+    ]
+    country: Annotated[
+        str | None, Field(description='ISO 3166-1 alpha-2 country code where delivery occurred')
+    ] = None
+    channel: Annotated[
+        str | None, Field(description='Channel type (e.g., display, video, audio, social)')
+    ] = None
+    brand_context: Annotated[
+        BrandContext | None,
+        Field(
+            description='Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.'
+        ),
+    ] = None
+    local_verdict: Annotated[
+        LocalVerdict | None, Field(description="Seller's local model verdict for this artifact")
+    ] = None
+
+
+class GetMediaBuyArtifactsResponse3(AdCPBaseModel):
+    media_buy_id: Annotated[str, Field(description='Media buy these artifacts belong to')]
+    artifacts: Annotated[
+        list[Artifact6], Field(description='Delivery records with full artifact content')
+    ]
+    collection_info: Annotated[
+        CollectionInfo | None,
+        Field(
+            description='Information about artifact collection for this media buy. Sampling is configured at buy creation time — this reports what was actually collected.'
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+GetMediaBuyArtifactsResponse = GetMediaBuyArtifactsResponse3 | GetMediaBuyArtifactsResponse4
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/list_content_standards_request.py b/src/adcp/types/generated_poc/bundled/content_standards/list_content_standards_request.py
new file mode 100644
index 000000000..799447994
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/list_content_standards_request.py
@@ -0,0 +1,92 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/list_content_standards_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Channel(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class ListContentStandardsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    channels: Annotated[
+        list[Channel] | None, Field(description='Filter by channel', min_length=1)
+    ] = None
+    languages: Annotated[
+        list[str] | None, Field(description='Filter by BCP 47 language tags', min_length=1)
+    ] = None
+    countries: Annotated[
+        list[str] | None,
+        Field(description='Filter by ISO 3166-1 alpha-2 country codes', min_length=1),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/list_content_standards_response.py b/src/adcp/types/generated_poc/bundled/content_standards/list_content_standards_response.py
new file mode 100644
index 000000000..71f1f331c
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/list_content_standards_response.py
@@ -0,0 +1,2379 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/list_content_standards_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from datetime import date as date_aliased
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class Source(Enum):
+    registry = 'registry'
+    inline = 'inline'
+
+
+class Category(Enum):
+    regulation = 'regulation'
+    standard = 'standard'
+
+
+class Enforcement(Enum):
+    must = 'must'
+    should = 'should'
+    may = 'may'
+
+
+class GovernanceDomain(Enum):
+    campaign = 'campaign'
+    property = 'property'
+    creative = 'creative'
+    content_standards = 'content_standards'
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Role(Enum):
+    title = 'title'
+    paragraph = 'paragraph'
+    heading = 'heading'
+    caption = 'caption'
+    quote = 'quote'
+    list_item = 'list_item'
+    description = 'description'
+
+
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role135(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role135, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy115(DeclaredBy):
+    pass
+
+
+class RenderGuidance115(RenderGuidance):
+    pass
+
+
+class Jurisdiction122(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance115 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure116(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction122] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem115(VerificationItem):
+    pass
+
+
+class Provenance116(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy115 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure116 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem115] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    application_json = 'application/json'
+
+
+class TranscriptSource(Enum):
+    original_script = 'original_script'
+    subtitles = 'subtitles'
+    closed_captions = 'closed_captions'
+    dub = 'dub'
+    generated = 'generated'
+
+
+class DeclaredBy116(DeclaredBy):
+    pass
+
+
+class RenderGuidance116(RenderGuidance):
+    pass
+
+
+class Jurisdiction123(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance116 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure117(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction123] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem116(VerificationItem):
+    pass
+
+
+class Provenance117(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy116 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure117 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem116] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptSource15(Enum):
+    original_script = 'original_script'
+    closed_captions = 'closed_captions'
+    generated = 'generated'
+
+
+class DeclaredBy117(DeclaredBy):
+    pass
+
+
+class RenderGuidance117(RenderGuidance):
+    pass
+
+
+class Jurisdiction124(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance117 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure118(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction124] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem117(VerificationItem):
+    pass
+
+
+class Provenance118(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy117 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure118 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem117] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Metadata(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
+    keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
+    open_graph: Annotated[
+        dict[str, Any] | None, Field(description='Open Graph protocol metadata')
+    ] = None
+    twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
+        None
+    )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class DeclaredBy118(DeclaredBy):
+    pass
+
+
+class RenderGuidance118(RenderGuidance):
+    pass
+
+
+class Jurisdiction125(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance118 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure119(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction125] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem118(VerificationItem):
+    pass
+
+
+class Provenance119(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy118 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure119 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem118] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
+
+
+class DeclaredBy119(DeclaredBy):
+    pass
+
+
+class RenderGuidance119(RenderGuidance):
+    pass
+
+
+class Jurisdiction126(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance119 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure120(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction126] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem119(VerificationItem):
+    pass
+
+
+class Provenance120(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy119 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure120 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem119] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets155(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance120 | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy120(DeclaredBy):
+    pass
+
+
+class RenderGuidance120(RenderGuidance):
+    pass
+
+
+class Jurisdiction127(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance120 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure121(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction127] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem120(VerificationItem):
+    pass
+
+
+class Provenance121(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy120 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure121 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem120] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy121(DeclaredBy):
+    pass
+
+
+class RenderGuidance121(RenderGuidance):
+    pass
+
+
+class Jurisdiction128(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance121 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure122(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction128] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem121(VerificationItem):
+    pass
+
+
+class Provenance122(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy121 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure122 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem121] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy122(DeclaredBy):
+    pass
+
+
+class RenderGuidance122(RenderGuidance):
+    pass
+
+
+class Jurisdiction129(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance122 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure123(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction129] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem122(VerificationItem):
+    pass
+
+
+class Provenance123(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy122 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure123 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem122] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy123(DeclaredBy):
+    pass
+
+
+class RenderGuidance123(RenderGuidance):
+    pass
+
+
+class Jurisdiction130(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance123 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure124(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction130] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem123(VerificationItem):
+    pass
+
+
+class Provenance124(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy123 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure124 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem123] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption131(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption132(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption133(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption134(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption135(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption136(PricingOption131, PricingOption135):
+    pass
+
+
+class PricingOption137(PricingOption132, PricingOption135):
+    pass
+
+
+class PricingOption138(PricingOption133, PricingOption135):
+    pass
+
+
+class PricingOption139(PricingOption134, PricingOption135):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption136 | PricingOption137 | PricingOption138 | PricingOption139]
+):
+    root: Annotated[
+        PricingOption136 | PricingOption137 | PricingOption138 | PricingOption139,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class ListContentStandardsResponse4(AdCPBaseModel):
+    errors: list[Error]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class AssetAccess(RootModel[Any]):
+    root: Any
+
+
+class Exemplar(AssetAccess):
+    pass
+
+
+class Exemplars(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    pass_: Annotated[
+        list[Exemplar] | None,
+        Field(alias='pass', description='Scenarios that comply with this policy.'),
+    ] = None
+    fail: Annotated[
+        list[Exemplar] | None, Field(description='Scenarios that violate this policy.')
+    ] = None
+
+
+class Policy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    policy_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this policy. Registry-published ids are canonical (e.g., "uk_hfss", "garm:brand_safety:violence"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio).'
+        ),
+    ]
+    source: Annotated[
+        Source | None,
+        Field(
+            description="Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+        ),
+    ] = Source.inline
+    version: Annotated[
+        str | None,
+        Field(
+            description='Semver version string (e.g., "1.0.0"). Incremented when policy content changes. Optional for inline bespoke policies — defaults to "1.0.0". SHOULD be provided for registry-published policies.'
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description='Human-readable name (e.g., "UK HFSS Restrictions"). Optional for inline bespoke policies — servers MAY default to policy_id.'
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Brief summary of what this policy covers.')
+    ] = None
+    category: Annotated[
+        Category | None,
+        Field(
+            description='The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies — defaults to "standard".',
+            title='Policy Category',
+        ),
+    ] = None
+    enforcement: Annotated[
+        Enforcement,
+        Field(
+            description='How governance agents treat violations. Regulations are typically "must"; standards are typically "should".',
+            title='Policy Enforcement Level',
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific.'
+        ),
+    ] = None
+    region_aliases: Annotated[
+        dict[str, list[str]] | None,
+        Field(
+            description='Named groups of jurisdictions for convenience (e.g., {"EU": ["AT","BE","BG",...]}). Governance agents expand aliases when matching against a plan\'s target jurisdictions.'
+        ),
+    ] = None
+    policy_categories: Annotated[
+        list[str] | None,
+        Field(
+            description='Regulatory categories this policy belongs to (e.g., ["children_directed", "age_restricted"]). Used for automatic matching against a campaign plan\'s declared policy_categories. A single policy can belong to multiple categories.'
+        ),
+    ] = None
+    channels: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.'
+        ),
+    ] = None
+    governance_domains: Annotated[
+        list[GovernanceDomain] | None,
+        Field(
+            description='Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains ["creative", "property"] can be declared as a feature by both creative and property governance agents.'
+        ),
+    ] = None
+    effective_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level.'
+        ),
+    ] = None
+    sunset_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration.'
+        ),
+    ] = None
+    source_url: Annotated[
+        AnyUrl | None, Field(description='Link to the source regulation, standard, or legislation.')
+    ] = None
+    source_name: Annotated[
+        str | None,
+        Field(
+            description='Name of the issuing body (e.g., "UK Food Standards Agency", "US Federal Trade Commission").'
+        ),
+    ] = None
+    policy: Annotated[
+        str,
+        Field(
+            description='Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy.'
+        ),
+    ]
+    guidance: Annotated[
+        str | None,
+        Field(
+            description='Implementation notes for governance agent developers. Not used in evaluation prompts.'
+        ),
+    ] = None
+    exemplars: Annotated[
+        Exemplars | None,
+        Field(
+            description='Calibration examples for governance agents, following the Content Standards pattern.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets152(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance116 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets153(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance117 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets154(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource15 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance118 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Pas(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets | Assets152 | Assets153 | Assets154],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance119 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class Assets156(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance121 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets157(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance122 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets158(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource15 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance123 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FailItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets155 | Assets156 | Assets157 | Assets158],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance124 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class CalibrationExemplars(AdCPBaseModel):
+    pass_: Annotated[
+        list[Pas] | None,
+        Field(alias='pass', description='Artifacts that pass the content standards'),
+    ] = None
+    fail: Annotated[
+        list[FailItem] | None, Field(description='Artifacts that fail the content standards')
+    ] = None
+
+
+class Standard(AdCPBaseModel):
+    standards_id: Annotated[
+        str, Field(description='Unique identifier for this standards configuration')
+    ]
+    name: Annotated[
+        str | None, Field(description='Human-readable name for this standards configuration')
+    ] = None
+    countries_all: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels. Standards apply to ANY of the listed channels (OR logic).',
+            min_length=1,
+        ),
+    ] = None
+    languages_any: Annotated[
+        list[str] | None,
+        Field(
+            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
+            min_length=1,
+        ),
+    ] = None
+    policies: Annotated[
+        list[Policy] | None,
+        Field(
+            description='Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id; governance findings reference the policy_id that triggered them.',
+            min_length=1,
+        ),
+    ] = None
+    calibration_exemplars: Annotated[
+        CalibrationExemplars | None,
+        Field(
+            description='Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.'
+        ),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this content standards service. The buyer passes the selected pricing_option_id in report_usage for billing verification.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ListContentStandardsResponse3(AdCPBaseModel):
+    standards: Annotated[
+        list[Standard],
+        Field(description='Array of content standards configurations matching the filter criteria'),
+    ]
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+ListContentStandardsResponse = ListContentStandardsResponse3 | ListContentStandardsResponse4
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/update_content_standards_request.py b/src/adcp/types/generated_poc/bundled/content_standards/update_content_standards_request.py
new file mode 100644
index 000000000..064ebe6bc
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/update_content_standards_request.py
@@ -0,0 +1,2189 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/update_content_standards_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from datetime import date as date_aliased
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class Scope(AdCPBaseModel):
+    countries_all: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels. Standards apply to ANY of the listed channels (OR logic).',
+            min_length=1,
+        ),
+    ] = None
+    languages_any: Annotated[
+        list[str] | None,
+        Field(
+            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
+            min_length=1,
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Human-readable description of this scope')
+    ] = None
+
+
+class Source(Enum):
+    registry = 'registry'
+    inline = 'inline'
+
+
+class Category(Enum):
+    regulation = 'regulation'
+    standard = 'standard'
+
+
+class Enforcement(Enum):
+    must = 'must'
+    should = 'should'
+    may = 'may'
+
+
+class GovernanceDomain(Enum):
+    campaign = 'campaign'
+    property = 'property'
+    creative = 'creative'
+    content_standards = 'content_standards'
+
+
+class Pass(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
+        Field(
+            description="Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
+        ),
+    ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
+    ] = None
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Role(Enum):
+    title = 'title'
+    paragraph = 'paragraph'
+    heading = 'heading'
+    caption = 'caption'
+    quote = 'quote'
+    list_item = 'list_item'
+    description = 'description'
+
+
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role246(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role246, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy209(DeclaredBy):
+    pass
+
+
+class RenderGuidance209(RenderGuidance):
+    pass
+
+
+class Jurisdiction222(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance209 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure210(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction222] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem209(VerificationItem):
+    pass
+
+
+class Provenance209(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy209 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure210 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem209] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    application_json = 'application/json'
+
+
+class TranscriptSource(Enum):
+    original_script = 'original_script'
+    subtitles = 'subtitles'
+    closed_captions = 'closed_captions'
+    dub = 'dub'
+    generated = 'generated'
+
+
+class DeclaredBy210(DeclaredBy):
+    pass
+
+
+class RenderGuidance210(RenderGuidance):
+    pass
+
+
+class Jurisdiction223(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance210 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure211(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction223] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem210(VerificationItem):
+    pass
+
+
+class Provenance210(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy210 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure211 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem210] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptSource19(Enum):
+    original_script = 'original_script'
+    closed_captions = 'closed_captions'
+    generated = 'generated'
+
+
+class DeclaredBy211(DeclaredBy):
+    pass
+
+
+class RenderGuidance211(RenderGuidance):
+    pass
+
+
+class Jurisdiction224(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance211 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure212(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction224] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem211(VerificationItem):
+    pass
+
+
+class Provenance211(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy211 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure212 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem211] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Metadata(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
+    keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
+    open_graph: Annotated[
+        dict[str, Any] | None, Field(description='Open Graph protocol metadata')
+    ] = None
+    twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
+        None
+    )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class DeclaredBy212(DeclaredBy):
+    pass
+
+
+class RenderGuidance212(RenderGuidance):
+    pass
+
+
+class Jurisdiction225(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance212 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure213(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction225] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem212(VerificationItem):
+    pass
+
+
+class Provenance212(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy212 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure213 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem212] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
+
+
+class Fail(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
+        Field(
+            description="Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+        ),
+    ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
+    ] = None
+
+
+class DeclaredBy213(DeclaredBy):
+    pass
+
+
+class RenderGuidance213(RenderGuidance):
+    pass
+
+
+class Jurisdiction226(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance213 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure214(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction226] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem213(VerificationItem):
+    pass
+
+
+class Provenance213(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy213 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure214 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem213] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets313(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance213 | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy214(DeclaredBy):
+    pass
+
+
+class RenderGuidance214(RenderGuidance):
+    pass
+
+
+class Jurisdiction227(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance214 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure215(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction227] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem214(VerificationItem):
+    pass
+
+
+class Provenance214(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy214 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure215 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem214] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy215(DeclaredBy):
+    pass
+
+
+class RenderGuidance215(RenderGuidance):
+    pass
+
+
+class Jurisdiction228(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance215 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure216(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction228] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem215(VerificationItem):
+    pass
+
+
+class Provenance215(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy215 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure216 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem215] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy216(DeclaredBy):
+    pass
+
+
+class RenderGuidance216(RenderGuidance):
+    pass
+
+
+class Jurisdiction229(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance216 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure217(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction229] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem216(VerificationItem):
+    pass
+
+
+class Provenance216(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy216 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure217 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem216] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy217(DeclaredBy):
+    pass
+
+
+class RenderGuidance217(RenderGuidance):
+    pass
+
+
+class Jurisdiction230(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance217 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure218(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction230] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem217(VerificationItem):
+    pass
+
+
+class Provenance217(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy217 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure218 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem217] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class AssetAccess(RootModel[Any]):
+    root: Any
+
+
+class Exemplar(AssetAccess):
+    pass
+
+
+class Exemplars(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    pass_: Annotated[
+        list[Exemplar] | None,
+        Field(alias='pass', description='Scenarios that comply with this policy.'),
+    ] = None
+    fail: Annotated[
+        list[Exemplar] | None, Field(description='Scenarios that violate this policy.')
+    ] = None
+
+
+class Policy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    policy_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this policy. Registry-published ids are canonical (e.g., "uk_hfss", "garm:brand_safety:violence"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio).'
+        ),
+    ]
+    source: Annotated[
+        Source | None,
+        Field(
+            description="Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+        ),
+    ] = Source.inline
+    version: Annotated[
+        str | None,
+        Field(
+            description='Semver version string (e.g., "1.0.0"). Incremented when policy content changes. Optional for inline bespoke policies — defaults to "1.0.0". SHOULD be provided for registry-published policies.'
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description='Human-readable name (e.g., "UK HFSS Restrictions"). Optional for inline bespoke policies — servers MAY default to policy_id.'
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Brief summary of what this policy covers.')
+    ] = None
+    category: Annotated[
+        Category | None,
+        Field(
+            description='The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies — defaults to "standard".',
+            title='Policy Category',
+        ),
+    ] = None
+    enforcement: Annotated[
+        Enforcement,
+        Field(
+            description='How governance agents treat violations. Regulations are typically "must"; standards are typically "should".',
+            title='Policy Enforcement Level',
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[str] | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific.'
+        ),
+    ] = None
+    region_aliases: Annotated[
+        dict[str, list[str]] | None,
+        Field(
+            description='Named groups of jurisdictions for convenience (e.g., {"EU": ["AT","BE","BG",...]}). Governance agents expand aliases when matching against a plan\'s target jurisdictions.'
+        ),
+    ] = None
+    policy_categories: Annotated[
+        list[str] | None,
+        Field(
+            description='Regulatory categories this policy belongs to (e.g., ["children_directed", "age_restricted"]). Used for automatic matching against a campaign plan\'s declared policy_categories. A single policy can belong to multiple categories.'
+        ),
+    ] = None
+    channels: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.'
+        ),
+    ] = None
+    governance_domains: Annotated[
+        list[GovernanceDomain] | None,
+        Field(
+            description='Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains ["creative", "property"] can be declared as a feature by both creative and property governance agents.'
+        ),
+    ] = None
+    effective_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level.'
+        ),
+    ] = None
+    sunset_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration.'
+        ),
+    ] = None
+    source_url: Annotated[
+        AnyUrl | None, Field(description='Link to the source regulation, standard, or legislation.')
+    ] = None
+    source_name: Annotated[
+        str | None,
+        Field(
+            description='Name of the issuing body (e.g., "UK Food Standards Agency", "US Federal Trade Commission").'
+        ),
+    ] = None
+    policy: Annotated[
+        str,
+        Field(
+            description='Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy.'
+        ),
+    ]
+    guidance: Annotated[
+        str | None,
+        Field(
+            description='Implementation notes for governance agent developers. Not used in evaluation prompts.'
+        ),
+    ] = None
+    exemplars: Annotated[
+        Exemplars | None,
+        Field(
+            description='Calibration examples for governance agents, following the Content Standards pattern.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets310(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance209 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets311(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance210 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets312(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource19 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance211 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Pass5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets | Assets310 | Assets311 | Assets312],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance212 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class Assets314(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance214 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets315(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance215 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets316(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource19 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance216 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Fail5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets313 | Assets314 | Assets315 | Assets316],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance217 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class CalibrationExemplars(AdCPBaseModel):
+    pass_: Annotated[
+        list[Pass | Pass5] | None,
+        Field(alias='pass', description='Content that passes the standards'),
+    ] = None
+    fail: Annotated[
+        list[Fail | Fail5] | None, Field(description='Content that fails the standards')
+    ] = None
+
+
+class UpdateContentStandardsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    standards_id: Annotated[str, Field(description='ID of the standards configuration to update')]
+    scope: Annotated[
+        Scope | None,
+        Field(description='Updated scope for where this standards configuration applies'),
+    ] = None
+    registry_policy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Registry policy IDs to use as the evaluation basis. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria.'
+        ),
+    ] = None
+    policies: Annotated[
+        list[Policy] | None,
+        Field(
+            description='Updated bespoke policies for this content-standards configuration, using the same shape as registry entries. Replaces the existing policies array; use stable policy_ids to track policies across versions. Combines with registry_policy_ids. Bespoke policy_ids MUST be flat (no colons/slashes).',
+            min_length=1,
+        ),
+    ] = None
+    calibration_exemplars: Annotated[
+        CalibrationExemplars | None,
+        Field(
+            description='Updated training/test set to calibrate policy interpretation. Use URL references for pages to be fetched and analyzed, or full artifacts for pre-extracted content.'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/update_content_standards_response.py b/src/adcp/types/generated_poc/bundled/content_standards/update_content_standards_response.py
new file mode 100644
index 000000000..20b087aff
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/update_content_standards_response.py
@@ -0,0 +1,111 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/update_content_standards_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class UpdateContentStandardsResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    success: Annotated[
+        Literal[True], Field(description='Indicates the update was applied successfully')
+    ]
+    standards_id: Annotated[str, Field(description='ID of the updated standards configuration')]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class UpdateContentStandardsResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    success: Annotated[Literal[False], Field(description='Indicates the update failed')]
+    errors: Annotated[
+        list[Error], Field(description='Errors that occurred during the update', min_length=1)
+    ]
+    conflicting_standards_id: Annotated[
+        str | None,
+        Field(
+            description='If scope change conflicts with another configuration, the ID of the conflicting standards'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+UpdateContentStandardsResponse = UpdateContentStandardsResponse3 | UpdateContentStandardsResponse4
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/validate_content_delivery_request.py b/src/adcp/types/generated_poc/bundled/content_standards/validate_content_delivery_request.py
new file mode 100644
index 000000000..1a4ff00ee
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/validate_content_delivery_request.py
@@ -0,0 +1,1141 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/validate_content_delivery_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Role(Enum):
+    title = 'title'
+    paragraph = 'paragraph'
+    heading = 'heading'
+    caption = 'caption'
+    quote = 'quote'
+    list_item = 'list_item'
+    description = 'description'
+
+
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role291(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role291, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
+    content: Annotated[
+        str,
+        Field(
+            description='Text content. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=100000,
+        ),
+    ]
+    content_format: Annotated[
+        ContentFormat | None,
+        Field(
+            description='MIME type indicating how to parse the content field. Default: text/plain.'
+        ),
+    ] = ContentFormat.text_plain
+    language: Annotated[
+        str | None,
+        Field(
+            description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
+        ),
+    ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance for this text block, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy247(DeclaredBy):
+    pass
+
+
+class RenderGuidance247(RenderGuidance):
+    pass
+
+
+class Jurisdiction262(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance247 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure248(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction262] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem247(VerificationItem):
+    pass
+
+
+class Provenance247(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy247 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure248 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem247] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    application_json = 'application/json'
+
+
+class TranscriptSource(Enum):
+    original_script = 'original_script'
+    subtitles = 'subtitles'
+    closed_captions = 'closed_captions'
+    dub = 'dub'
+    generated = 'generated'
+
+
+class DeclaredBy248(DeclaredBy):
+    pass
+
+
+class RenderGuidance248(RenderGuidance):
+    pass
+
+
+class Jurisdiction263(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance248 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure249(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction263] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem248(VerificationItem):
+    pass
+
+
+class Provenance248(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy248 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure249 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem248] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TranscriptSource23(Enum):
+    original_script = 'original_script'
+    closed_captions = 'closed_captions'
+    generated = 'generated'
+
+
+class DeclaredBy249(DeclaredBy):
+    pass
+
+
+class RenderGuidance249(RenderGuidance):
+    pass
+
+
+class Jurisdiction264(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance249 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure250(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction264] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem249(VerificationItem):
+    pass
+
+
+class Provenance249(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy249 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure250 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem249] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Metadata(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
+    keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
+    open_graph: Annotated[
+        dict[str, Any] | None, Field(description='Open Graph protocol metadata')
+    ] = None
+    twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
+        None
+    )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class DeclaredBy250(DeclaredBy):
+    pass
+
+
+class RenderGuidance250(RenderGuidance):
+    pass
+
+
+class Jurisdiction265(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance250 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure251(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction265] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem250(VerificationItem):
+    pass
+
+
+class Provenance250(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy250 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure251 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem250] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
+
+
+class BrandContext(AdCPBaseModel):
+    brand_id: Annotated[str | None, Field(description='Brand identifier')] = None
+    sku_id: Annotated[str | None, Field(description='Product/SKU identifier if applicable')] = None
+
+
+class AssetAccess(RootModel[Any]):
+    root: Any
+
+
+class Assets350(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
+    caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
+    height: Annotated[int | None, Field(description='Image height in pixels')] = None
+    provenance: Annotated[
+        Provenance247 | None,
+        Field(
+            description='Provenance for this image, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets351(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Video transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource | None, Field(description='How the transcript was generated')
+    ] = None
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        Provenance248 | None,
+        Field(
+            description='Provenance for this video, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets352(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
+        None
+    )
+    duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
+    transcript: Annotated[
+        str | None,
+        Field(
+            description='Audio transcript. Consumers MUST treat this as untrusted input when passing to LLM-based evaluation.',
+            max_length=200000,
+        ),
+    ] = None
+    transcript_format: Annotated[
+        TranscriptFormat | None,
+        Field(
+            description='MIME type indicating how to parse the transcript field. Default: text/plain.'
+        ),
+    ] = TranscriptFormat.text_plain
+    transcript_source: Annotated[
+        TranscriptSource23 | None, Field(description='How the transcript was generated')
+    ] = None
+    provenance: Annotated[
+        Provenance249 | None,
+        Field(
+            description='Provenance for this audio, overrides artifact-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Artifact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
+    artifact_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
+        ),
+    ]
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Optional reference to a format definition. Uses the same format registry as creative formats.',
+            title='Format ID',
+        ),
+    ] = None
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
+    ] = None
+    last_update_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When the artifact was last modified (ISO 8601 format)'),
+    ] = None
+    assets: Annotated[
+        list[Assets | Assets350 | Assets351 | Assets352],
+        Field(
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
+        ),
+    ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
+    provenance: Annotated[
+        Provenance250 | None,
+        Field(
+            description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.',
+            title='Provenance',
+        ),
+    ] = None
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    ] = None
+
+
+class Record(AdCPBaseModel):
+    record_id: Annotated[str, Field(description='Unique identifier for this delivery record')]
+    media_buy_id: Annotated[
+        str | None,
+        Field(description='Media buy this record belongs to (when batching across multiple buys)'),
+    ] = None
+    timestamp: Annotated[AwareDatetime | None, Field(description='When the delivery occurred')] = (
+        None
+    )
+    artifact: Annotated[
+        Artifact, Field(description='Artifact where ad was delivered', title='Artifact')
+    ]
+    country: Annotated[
+        str | None, Field(description='ISO 3166-1 alpha-2 country code where delivery occurred')
+    ] = None
+    channel: Annotated[
+        str | None, Field(description='Channel type (e.g., display, video, audio, social)')
+    ] = None
+    brand_context: Annotated[
+        BrandContext | None,
+        Field(
+            description='Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.'
+        ),
+    ] = None
+
+
+class ValidateContentDeliveryRequest(AdCPBaseModel):
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    standards_id: Annotated[str, Field(description='Standards configuration to validate against')]
+    records: Annotated[
+        list[Record],
+        Field(
+            description='Delivery records to validate (max 10,000)', max_length=10000, min_length=1
+        ),
+    ]
+    feature_ids: Annotated[
+        list[str] | None,
+        Field(description='Specific features to evaluate (defaults to all)', min_length=1),
+    ] = None
+    include_passed: Annotated[
+        bool | None, Field(description='Include passed records in results')
+    ] = True
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/content_standards/validate_content_delivery_response.py b/src/adcp/types/generated_poc/bundled/content_standards/validate_content_delivery_response.py
new file mode 100644
index 000000000..d23cc541c
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/content_standards/validate_content_delivery_response.py
@@ -0,0 +1,153 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/content_standards/validate_content_delivery_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Summary(AdCPBaseModel):
+    total_records: int
+    passed_records: int
+    failed_records: int
+
+
+class Verdict(Enum):
+    pass_ = 'pass'
+    fail = 'fail'
+
+
+class Status(Enum):
+    passed = 'passed'
+    failed = 'failed'
+    warning = 'warning'
+    unevaluated = 'unevaluated'
+
+
+class Feature(AdCPBaseModel):
+    feature_id: Annotated[
+        str,
+        Field(
+            description="Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'image_dpi'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact', 'delivery:authorization'. Reserved prefixes: 'record:', 'delivery:'."
+        ),
+    ]
+    status: Status
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Registry policy ID that triggered this result. Present when the result originates from a specific registry policy (e.g., GARM category, CSBS standard). Enables programmatic routing by looking up the policy in the registry.'
+        ),
+    ] = None
+    explanation: Annotated[
+        str | None,
+        Field(
+            description="Directional human-readable explanation (e.g., 'Below minimum resolution for display placement'). Avoid quantitative thresholds — the evaluator is the oracle."
+        ),
+    ] = None
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+
+
+class Result(AdCPBaseModel):
+    record_id: Annotated[str, Field(description='Which delivery record was evaluated')]
+    verdict: Annotated[Verdict, Field(description='Overall pass/fail verdict for this record')]
+    features: Annotated[
+        list[Feature] | None,
+        Field(
+            description="Per-feature breakdown. When present, SHOULD include all failed and warning features. MAY include passed features. Oracle pattern: exposes verdict + rule pointer, never the seller's threshold or the caller's submitted value (the seller authored the content standards)."
+        ),
+    ] = None
+
+
+class ValidateContentDeliveryResponse3(AdCPBaseModel):
+    summary: Annotated[Summary, Field(description='Summary counts across all records')]
+    results: Annotated[list[Result], Field(description='Per-record evaluation results')]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class ValidateContentDeliveryResponse4(AdCPBaseModel):
+    errors: list[Error]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+ValidateContentDeliveryResponse = ValidateContentDeliveryResponse3 | ValidateContentDeliveryResponse4
diff --git a/src/adcp/types/generated_poc/bundled/core/__init__.py b/src/adcp/types/generated_poc/bundled/core/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/core/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/core/tasks_get_request.py b/src/adcp/types/generated_poc/bundled/core/tasks_get_request.py
new file mode 100644
index 000000000..785762a7c
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/core/tasks_get_request.py
@@ -0,0 +1,45 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/core/tasks_get_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class TasksGetRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    task_id: Annotated[str, Field(description='Unique identifier of the task to retrieve')]
+    include_history: Annotated[
+        bool | None,
+        Field(
+            description='Include full conversation history for this task (may increase response size)'
+        ),
+    ] = False
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/core/tasks_get_response.py b/src/adcp/types/generated_poc/bundled/core/tasks_get_response.py
new file mode 100644
index 000000000..7bd93a1f1
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/core/tasks_get_response.py
@@ -0,0 +1,161 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/core/tasks_get_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class TaskType(Enum):
+    create_media_buy = 'create_media_buy'
+    update_media_buy = 'update_media_buy'
+    sync_creatives = 'sync_creatives'
+    activate_signal = 'activate_signal'
+    get_signals = 'get_signals'
+    create_property_list = 'create_property_list'
+    update_property_list = 'update_property_list'
+    get_property_list = 'get_property_list'
+    list_property_lists = 'list_property_lists'
+    delete_property_list = 'delete_property_list'
+    sync_accounts = 'sync_accounts'
+    get_account_financials = 'get_account_financials'
+    get_creative_delivery = 'get_creative_delivery'
+    sync_event_sources = 'sync_event_sources'
+    sync_audiences = 'sync_audiences'
+    sync_catalogs = 'sync_catalogs'
+    log_event = 'log_event'
+    get_brand_identity = 'get_brand_identity'
+    get_rights = 'get_rights'
+    acquire_rights = 'acquire_rights'
+
+
+class Protocol(Enum):
+    media_buy = 'media-buy'
+    signals = 'signals'
+    governance = 'governance'
+    creative = 'creative'
+    brand = 'brand'
+    sponsored_intelligence = 'sponsored-intelligence'
+
+
+class Status(Enum):
+    submitted = 'submitted'
+    working = 'working'
+    input_required = 'input-required'
+    completed = 'completed'
+    canceled = 'canceled'
+    failed = 'failed'
+    rejected = 'rejected'
+    auth_required = 'auth-required'
+    unknown = 'unknown'
+
+
+class Progress(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    percentage: Annotated[
+        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
+    ] = None
+    current_step: Annotated[
+        str | None, Field(description='Current step or phase of the operation')
+    ] = None
+    total_steps: Annotated[
+        int | None, Field(description='Total number of steps in the operation', ge=1)
+    ] = None
+    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+
+
+class Details(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    protocol: Annotated[
+        Protocol | None,
+        Field(description='AdCP protocol where error occurred', title='AdCP Protocol'),
+    ] = None
+    operation: Annotated[str | None, Field(description='Specific operation that failed')] = None
+    specific_context: Annotated[
+        dict[str, Any] | None, Field(description='Domain-specific error context')
+    ] = None
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[str, Field(description='Error code for programmatic handling')]
+    message: Annotated[str, Field(description='Detailed error message')]
+    details: Annotated[Details | None, Field(description='Additional error context')] = None
+
+
+class Type(Enum):
+    request = 'request'
+    response = 'response'
+
+
+class HistoryItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    timestamp: Annotated[AwareDatetime, Field(description='When this exchange occurred (ISO 8601)')]
+    type: Annotated[
+        Type, Field(description='Whether this was a request from client or response from server')
+    ]
+    data: Annotated[dict[str, Any], Field(description='The full request or response payload')]
+
+
+class TasksGetResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    task_id: Annotated[str, Field(description='Unique identifier for this task')]
+    task_type: Annotated[TaskType, Field(description='Type of AdCP operation', title='Task Type')]
+    protocol: Annotated[
+        Protocol, Field(description='AdCP protocol this task belongs to', title='AdCP Protocol')
+    ]
+    status: Annotated[Status, Field(description='Current task status', title='Task Status')]
+    created_at: Annotated[
+        AwareDatetime, Field(description='When the task was initially created (ISO 8601)')
+    ]
+    updated_at: Annotated[
+        AwareDatetime, Field(description='When the task was last updated (ISO 8601)')
+    ]
+    completed_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When the task completed (ISO 8601, only for completed/failed/canceled tasks)'
+        ),
+    ] = None
+    has_webhook: Annotated[
+        bool | None, Field(description='Whether this task has webhook configuration')
+    ] = None
+    progress: Annotated[
+        Progress | None, Field(description='Progress information for long-running tasks')
+    ] = None
+    error: Annotated[Error | None, Field(description='Error details for failed tasks')] = None
+    history: Annotated[
+        list[HistoryItem] | None,
+        Field(
+            description='Complete conversation history for this task (only included if include_history was true in request)'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/core/tasks_list_request.py b/src/adcp/types/generated_poc/bundled/core/tasks_list_request.py
new file mode 100644
index 000000000..958549d4e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/core/tasks_list_request.py
@@ -0,0 +1,187 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/core/tasks_list_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class Protocol(Enum):
+    media_buy = 'media-buy'
+    signals = 'signals'
+    governance = 'governance'
+    creative = 'creative'
+    brand = 'brand'
+    sponsored_intelligence = 'sponsored-intelligence'
+
+
+class Status(Enum):
+    submitted = 'submitted'
+    working = 'working'
+    input_required = 'input-required'
+    completed = 'completed'
+    canceled = 'canceled'
+    failed = 'failed'
+    rejected = 'rejected'
+    auth_required = 'auth-required'
+    unknown = 'unknown'
+
+
+class TaskType(Enum):
+    create_media_buy = 'create_media_buy'
+    update_media_buy = 'update_media_buy'
+    sync_creatives = 'sync_creatives'
+    activate_signal = 'activate_signal'
+    get_signals = 'get_signals'
+    create_property_list = 'create_property_list'
+    update_property_list = 'update_property_list'
+    get_property_list = 'get_property_list'
+    list_property_lists = 'list_property_lists'
+    delete_property_list = 'delete_property_list'
+    sync_accounts = 'sync_accounts'
+    get_account_financials = 'get_account_financials'
+    get_creative_delivery = 'get_creative_delivery'
+    sync_event_sources = 'sync_event_sources'
+    sync_audiences = 'sync_audiences'
+    sync_catalogs = 'sync_catalogs'
+    log_event = 'log_event'
+    get_brand_identity = 'get_brand_identity'
+    get_rights = 'get_rights'
+    acquire_rights = 'acquire_rights'
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    protocol: Annotated[
+        Protocol | None, Field(description='Filter by single AdCP protocol', title='AdCP Protocol')
+    ] = None
+    protocols: Annotated[
+        list[Protocol] | None, Field(description='Filter by multiple AdCP protocols', min_length=1)
+    ] = None
+    status: Annotated[
+        Status | None, Field(description='Filter by single task status', title='Task Status')
+    ] = None
+    statuses: Annotated[
+        list[Status] | None, Field(description='Filter by multiple task statuses', min_length=1)
+    ] = None
+    task_type: Annotated[
+        TaskType | None, Field(description='Filter by single task type', title='Task Type')
+    ] = None
+    task_types: Annotated[
+        list[TaskType] | None, Field(description='Filter by multiple task types', min_length=1)
+    ] = None
+    created_after: Annotated[
+        AwareDatetime | None, Field(description='Filter tasks created after this date (ISO 8601)')
+    ] = None
+    created_before: Annotated[
+        AwareDatetime | None, Field(description='Filter tasks created before this date (ISO 8601)')
+    ] = None
+    updated_after: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter tasks last updated after this date (ISO 8601)'),
+    ] = None
+    updated_before: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter tasks last updated before this date (ISO 8601)'),
+    ] = None
+    task_ids: Annotated[
+        list[str] | None,
+        Field(description='Filter by specific task IDs', max_length=100, min_length=1),
+    ] = None
+    context_contains: Annotated[
+        str | None,
+        Field(
+            description='Filter tasks where context contains this text (searches media_buy_id, signal_id, etc.)'
+        ),
+    ] = None
+    has_webhook: Annotated[
+        bool | None, Field(description='Filter tasks that have webhook configuration when true')
+    ] = None
+
+
+class Field1(Enum):
+    created_at = 'created_at'
+    updated_at = 'updated_at'
+    status = 'status'
+    task_type = 'task_type'
+    protocol = 'protocol'
+
+
+class Direction(Enum):
+    asc = 'asc'
+    desc = 'desc'
+
+
+class Sort(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    field: Annotated[Field1 | None, Field(description='Field to sort by')] = Field1.created_at
+    direction: Annotated[
+        Direction | None, Field(description='Sort direction', title='Sort Direction')
+    ] = Direction.desc
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class TasksListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    filters: Annotated[Filters | None, Field(description='Filter criteria for querying tasks')] = (
+        None
+    )
+    sort: Annotated[Sort | None, Field(description='Sorting parameters')] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    include_history: Annotated[
+        bool | None,
+        Field(
+            description='Include full conversation history for each task (may significantly increase response size)'
+        ),
+    ] = False
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/core/tasks_list_response.py b/src/adcp/types/generated_poc/bundled/core/tasks_list_response.py
new file mode 100644
index 000000000..495db1382
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/core/tasks_list_response.py
@@ -0,0 +1,180 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/core/tasks_list_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class DomainBreakdown(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    media_buy: Annotated[
+        int | None,
+        Field(alias='media-buy', description='Number of media-buy tasks in results', ge=0),
+    ] = None
+    signals: Annotated[
+        int | None, Field(description='Number of signals tasks in results', ge=0)
+    ] = None
+
+
+class Direction(Enum):
+    asc = 'asc'
+    desc = 'desc'
+
+
+class SortApplied(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    field: str
+    direction: Direction
+
+
+class QuerySummary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    total_matching: Annotated[
+        int | None,
+        Field(description='Total number of tasks matching filters (across all pages)', ge=0),
+    ] = None
+    returned: Annotated[
+        int | None, Field(description='Number of tasks returned in this response', ge=0)
+    ] = None
+    domain_breakdown: Annotated[
+        DomainBreakdown | None, Field(description='Count of tasks by domain')
+    ] = None
+    status_breakdown: Annotated[
+        dict[str, int] | None, Field(description='Count of tasks by status')
+    ] = None
+    filters_applied: Annotated[
+        list[str] | None, Field(description='List of filters that were applied to the query')
+    ] = None
+    sort_applied: Annotated[
+        SortApplied | None, Field(description='Sort order that was applied')
+    ] = None
+
+
+class TaskType(Enum):
+    create_media_buy = 'create_media_buy'
+    update_media_buy = 'update_media_buy'
+    sync_creatives = 'sync_creatives'
+    activate_signal = 'activate_signal'
+    get_signals = 'get_signals'
+    create_property_list = 'create_property_list'
+    update_property_list = 'update_property_list'
+    get_property_list = 'get_property_list'
+    list_property_lists = 'list_property_lists'
+    delete_property_list = 'delete_property_list'
+    sync_accounts = 'sync_accounts'
+    get_account_financials = 'get_account_financials'
+    get_creative_delivery = 'get_creative_delivery'
+    sync_event_sources = 'sync_event_sources'
+    sync_audiences = 'sync_audiences'
+    sync_catalogs = 'sync_catalogs'
+    log_event = 'log_event'
+    get_brand_identity = 'get_brand_identity'
+    get_rights = 'get_rights'
+    acquire_rights = 'acquire_rights'
+
+
+class Domain(Enum):
+    media_buy = 'media-buy'
+    signals = 'signals'
+
+
+class Status(Enum):
+    submitted = 'submitted'
+    working = 'working'
+    input_required = 'input-required'
+    completed = 'completed'
+    canceled = 'canceled'
+    failed = 'failed'
+    rejected = 'rejected'
+    auth_required = 'auth-required'
+    unknown = 'unknown'
+
+
+class Task(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    task_id: Annotated[str, Field(description='Unique identifier for this task')]
+    task_type: Annotated[TaskType, Field(description='Type of AdCP operation', title='Task Type')]
+    domain: Annotated[Domain, Field(description='AdCP domain this task belongs to')]
+    status: Annotated[Status, Field(description='Current task status', title='Task Status')]
+    created_at: Annotated[
+        AwareDatetime, Field(description='When the task was initially created (ISO 8601)')
+    ]
+    updated_at: Annotated[
+        AwareDatetime, Field(description='When the task was last updated (ISO 8601)')
+    ]
+    completed_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When the task completed (ISO 8601, only for completed/failed/canceled tasks)'
+        ),
+    ] = None
+    has_webhook: Annotated[
+        bool | None, Field(description='Whether this task has webhook configuration')
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class TasksListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    query_summary: Annotated[
+        QuerySummary, Field(description='Summary of the query that was executed')
+    ]
+    tasks: Annotated[list[Task], Field(description='Array of tasks matching the query criteria')]
+    pagination: Annotated[
+        Pagination,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/__init__.py b/src/adcp/types/generated_poc/bundled/creative/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/creative/get_creative_delivery_request.py b/src/adcp/types/generated_poc/bundled/creative/get_creative_delivery_request.py
new file mode 100644
index 000000000..46488b9f4
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/get_creative_delivery_request.py
@@ -0,0 +1,178 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/get_creative_delivery_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class GetCreativeDeliveryRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account11 | None,
+        Field(
+            description='Account for routing and scoping. Limits results to creatives within this account.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    media_buy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific media buys by publisher ID. If omitted, returns creative delivery across all matching media buys.',
+            min_length=1,
+        ),
+    ] = None
+    creative_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific creatives by ID. If omitted, returns delivery for all creatives matching the other filters.',
+            min_length=1,
+        ),
+    ] = None
+    start_date: Annotated[
+        str | None,
+        Field(
+            description="Start date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone.",
+            pattern='^\\d{4}-\\d{2}-\\d{2}$',
+        ),
+    ] = None
+    end_date: Annotated[
+        str | None,
+        Field(
+            description="End date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone.",
+            pattern='^\\d{4}-\\d{2}-\\d{2}$',
+        ),
+    ] = None
+    max_variants: Annotated[
+        int | None,
+        Field(
+            description='Maximum number of variants to return per creative. When omitted, the agent returns all variants. Use this to limit response size for generative creatives that may produce large numbers of variants.',
+            ge=1,
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Pagination parameters for the creatives array in the response. Uses cursor-based pagination consistent with other list operations.',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/get_creative_delivery_response.py b/src/adcp/types/generated_poc/bundled/creative/get_creative_delivery_response.py
new file mode 100644
index 000000000..364bc1086
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/get_creative_delivery_response.py
@@ -0,0 +1,4000 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/get_creative_delivery_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class ReportingPeriod(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    start: Annotated[AwareDatetime, Field(description='ISO 8601 start timestamp')]
+    end: Annotated[AwareDatetime, Field(description='ISO 8601 end timestamp')]
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="IANA timezone identifier for the reporting period (e.g., 'America/New_York', 'UTC'). Platforms report in their native timezone."
+        ),
+    ] = None
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class EventType(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ByEventTypeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_type: Annotated[EventType, Field(description='The event type', title='Event Type')]
+    event_source_id: Annotated[
+        str | None,
+        Field(
+            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
+        ),
+    ] = None
+    count: Annotated[float, Field(description='Number of events of this type', ge=0.0)]
+    value: Annotated[
+        float | None, Field(description='Total monetary value of events of this type', ge=0.0)
+    ] = None
+
+
+class ReachUnit(AdCPBaseModel):
+    pass
+
+
+class QuartileData(AdCPBaseModel):
+    q1_views: Annotated[float | None, Field(description='25% completion views', ge=0.0)] = None
+    q2_views: Annotated[float | None, Field(description='50% completion views', ge=0.0)] = None
+    q3_views: Annotated[float | None, Field(description='75% completion views', ge=0.0)] = None
+    q4_views: Annotated[float | None, Field(description='100% completion views', ge=0.0)] = None
+
+
+class VenueBreakdownItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    venue_id: Annotated[str, Field(description='Venue identifier')]
+    venue_name: Annotated[str | None, Field(description='Human-readable venue name')] = None
+    venue_type: Annotated[
+        str | None,
+        Field(description="Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"),
+    ] = None
+    impressions: Annotated[int, Field(description='Impressions delivered at this venue', ge=0)]
+    loop_plays: Annotated[int | None, Field(description='Loop plays at this venue', ge=0)] = None
+    screens_used: Annotated[
+        int | None, Field(description='Number of screens used at this venue', ge=0)
+    ] = None
+
+
+class DoohMetrics(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    loop_plays: Annotated[
+        int | None, Field(description='Number of times ad played in rotation', ge=0)
+    ] = None
+    screens_used: Annotated[
+        int | None, Field(description='Number of unique screens displaying the ad', ge=0)
+    ] = None
+    screen_time_seconds: Annotated[
+        int | None, Field(description='Total display time in seconds', ge=0)
+    ] = None
+    sov_achieved: Annotated[
+        float | None,
+        Field(description='Actual share of voice delivered (0.0 to 1.0)', ge=0.0, le=1.0),
+    ] = None
+    calculation_notes: Annotated[
+        str | None, Field(description='Explanation of how DOOH impressions were calculated')
+    ] = None
+    venue_breakdown: Annotated[
+        list[VenueBreakdownItem] | None, Field(description='Per-venue performance breakdown')
+    ] = None
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class Viewability(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    measurable_impressions: Annotated[
+        float | None,
+        Field(
+            description='Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).',
+            ge=0.0,
+        ),
+    ] = None
+    viewable_impressions: Annotated[
+        float | None,
+        Field(
+            description='Impressions that met the viewability threshold defined by the measurement standard.',
+            ge=0.0,
+        ),
+    ] = None
+    viewable_rate: Annotated[
+        float | None,
+        Field(
+            description='Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description='Viewability measurement standard applied to these metrics.',
+            title='Viewability Standard',
+        ),
+    ] = None
+
+
+class ActionSource(Enum):
+    website = 'website'
+    app = 'app'
+    offline = 'offline'
+    phone_call = 'phone_call'
+    chat = 'chat'
+    email = 'email'
+    in_store = 'in_store'
+    system_generated = 'system_generated'
+    other = 'other'
+
+
+class ByActionSourceItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action_source: Annotated[
+        ActionSource, Field(description='Where the conversion occurred', title='Action Source')
+    ]
+    event_source_id: Annotated[
+        str | None,
+        Field(
+            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
+        ),
+    ] = None
+    count: Annotated[
+        float, Field(description='Number of conversions from this action source', ge=0.0)
+    ]
+    value: Annotated[
+        float | None,
+        Field(description='Total monetary value of conversions from this action source', ge=0.0),
+    ] = None
+
+
+class Totals(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    impressions: Annotated[float | None, Field(description='Impressions delivered', ge=0.0)] = None
+    spend: Annotated[float | None, Field(description='Amount spent', ge=0.0)] = None
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+
+
+class ByEventTypeItem2(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics2(DoohMetrics):
+    pass
+
+
+class Viewability2(Viewability):
+    pass
+
+
+class ByActionSourceItem2(ByActionSourceItem):
+    pass
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy82(DeclaredBy):
+    pass
+
+
+class RenderGuidance82(RenderGuidance):
+    pass
+
+
+class Jurisdiction87(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance82 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure83(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction87] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem82(VerificationItem):
+    pass
+
+
+class Provenance83(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy82 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure83 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem82] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets116(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance83 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy83(DeclaredBy):
+    pass
+
+
+class RenderGuidance83(RenderGuidance):
+    pass
+
+
+class Jurisdiction88(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance83 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure84(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction88] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem83(VerificationItem):
+    pass
+
+
+class Provenance84(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy83 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure84 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem83] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets117(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance84 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy84(DeclaredBy):
+    pass
+
+
+class RenderGuidance84(RenderGuidance):
+    pass
+
+
+class Jurisdiction89(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance84 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure85(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction89] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem84(VerificationItem):
+    pass
+
+
+class Provenance85(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy84 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure85 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem84] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets118(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance85 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy85(DeclaredBy):
+    pass
+
+
+class RenderGuidance85(RenderGuidance):
+    pass
+
+
+class Jurisdiction90(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance85 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure86(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction90] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem85(VerificationItem):
+    pass
+
+
+class Provenance86(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy85 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure86 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem85] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets119(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance86 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy86(DeclaredBy):
+    pass
+
+
+class RenderGuidance86(RenderGuidance):
+    pass
+
+
+class Jurisdiction91(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance86 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure87(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction91] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem86(VerificationItem):
+    pass
+
+
+class Provenance87(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy86 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure87 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem86] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets120(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance87 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy87(DeclaredBy):
+    pass
+
+
+class RenderGuidance87(RenderGuidance):
+    pass
+
+
+class Jurisdiction92(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance87 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure88(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction92] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem87(VerificationItem):
+    pass
+
+
+class Provenance88(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy87 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure88 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem87] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets121(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance88 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy88(DeclaredBy):
+    pass
+
+
+class RenderGuidance88(RenderGuidance):
+    pass
+
+
+class Jurisdiction93(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance88 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure89(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction93] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem88(VerificationItem):
+    pass
+
+
+class Provenance89(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy88 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure89 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem88] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets122(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance89 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy89(DeclaredBy):
+    pass
+
+
+class RenderGuidance89(RenderGuidance):
+    pass
+
+
+class Jurisdiction94(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance89 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure90(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction94] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem89(VerificationItem):
+    pass
+
+
+class Provenance90(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy89 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure90 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem89] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets123(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance90 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method9(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method9, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy90(DeclaredBy):
+    pass
+
+
+class RenderGuidance90(RenderGuidance):
+    pass
+
+
+class Jurisdiction95(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance90 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure91(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction95] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem90(VerificationItem):
+    pass
+
+
+class Provenance91(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy90 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure91 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem90] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets124(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance91 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy91(DeclaredBy):
+    pass
+
+
+class RenderGuidance91(RenderGuidance):
+    pass
+
+
+class Jurisdiction96(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance91 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure92(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction96] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem91(VerificationItem):
+    pass
+
+
+class Provenance92(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy91 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure92 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem91] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets125(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance92 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent18(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy92(DeclaredBy):
+    pass
+
+
+class RenderGuidance92(RenderGuidance):
+    pass
+
+
+class Jurisdiction97(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance92 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure93(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction97] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem92(VerificationItem):
+    pass
+
+
+class Provenance93(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy92 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure93 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem92] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets126(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent18] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance93 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy93(DeclaredBy):
+    pass
+
+
+class RenderGuidance93(RenderGuidance):
+    pass
+
+
+class Jurisdiction98(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance93 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure94(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction98] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem93(VerificationItem):
+    pass
+
+
+class Provenance94(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy93 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure94 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem93] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets127(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent18] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance94 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets128(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role108(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role108,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction99(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction99] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets129(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets130(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[EventType] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class RightsAgent(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+    id: Annotated[str, Field(description='Agent identifier')]
+
+
+class Use(Enum):
+    likeness = 'likeness'
+    voice = 'voice'
+    name = 'name'
+    endorsement = 'endorsement'
+    motion_capture = 'motion_capture'
+    signature = 'signature'
+    catchphrase = 'catchphrase'
+    sync = 'sync'
+    background_music = 'background_music'
+    editorial = 'editorial'
+    commercial = 'commercial'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ExcludedCountry(Country):
+    pass
+
+
+class RightType(Enum):
+    talent = 'talent'
+    character = 'character'
+    brand_ip = 'brand_ip'
+    music = 'music'
+    stock_media = 'stock_media'
+
+
+class ApprovalStatus(Enum):
+    pending = 'pending'
+    approved = 'approved'
+    rejected = 'rejected'
+
+
+class Right(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from the acquire_rights response')
+    ]
+    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
+    valid_from: Annotated[
+        AwareDatetime | None, Field(description='Start of the rights validity period')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='End of the rights validity period. Creative should not be served after this time.'
+        ),
+    ] = None
+    uses: Annotated[
+        list[Use], Field(description='Rights uses covered by this constraint', min_length=1)
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.'
+        ),
+    ] = None
+    excluded_countries: Annotated[
+        list[ExcludedCountry] | None,
+        Field(
+            description='Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.'
+        ),
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(
+            description='Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.',
+            ge=1,
+        ),
+    ] = None
+    right_type: Annotated[
+        RightType | None,
+        Field(
+            description='Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.',
+            title='Right Type',
+        ),
+    ] = None
+    approval_status: Annotated[
+        ApprovalStatus | None,
+        Field(
+            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
+        ),
+    ] = None
+    verification_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Type33(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type33,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy94(DeclaredBy):
+    pass
+
+
+class RenderGuidance94(RenderGuidance):
+    pass
+
+
+class Jurisdiction100(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance94 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure95(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction100] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem94(VerificationItem):
+    pass
+
+
+class Provenance95(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy94 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure95 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem94] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Manifest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets116
+            | Assets117
+            | Assets118
+            | Assets119
+            | Assets120
+            | Assets121
+            | Assets122
+            | Assets123
+            | Assets124
+            | Assets125
+            | Assets126
+            | Assets127
+            | Assets128
+            | Assets129
+            | Assets130,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance95 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Type34(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class PropertyId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type34,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class Artifact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    property_id: Annotated[
+        PropertyId, Field(description='Property where the artifact appears', title='Identifier')
+    ]
+    artifact_id: Annotated[str, Field(description='Artifact identifier within the property')]
+
+
+class GenerationContext(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    context_type: Annotated[
+        str | None,
+        Field(
+            description="Type of context that triggered generation (e.g., 'web_page', 'conversational', 'search', 'app', 'dooh')"
+        ),
+    ] = None
+    artifact: Annotated[
+        Artifact | None,
+        Field(
+            description='Reference to the content-standards artifact that provided the generation context. Links this variant to the specific piece of content (article, video, podcast segment, etc.) where the ad was placed.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Variant(AdCPBaseModel):
+    impressions: Annotated[float | None, Field(description='Impressions delivered', ge=0.0)] = None
+    spend: Annotated[float | None, Field(description='Amount spent', ge=0.0)] = None
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem2] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics2 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability2 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem2] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    variant_id: Annotated[str, Field(description='Platform-assigned identifier for this variant')]
+    manifest: Annotated[
+        Manifest | None,
+        Field(
+            description='The rendered creative manifest for this variant — the actual output that was served, not the input assets. Contains format_id and the resolved assets (specific headline, image, video, etc. the platform selected or generated). For Tier 2, shows which asset combination was picked. For Tier 3, contains the generated assets which may differ entirely from the input brand identity. Pass to preview_creative to re-render.',
+            title='Creative Manifest',
+        ),
+    ] = None
+    generation_context: Annotated[
+        GenerationContext | None,
+        Field(
+            description='Input signals that triggered generation of this variant (Tier 3). Describes why the platform created this specific variant. Platforms should provide summarized or anonymized signals rather than raw user input. For web contexts, may include page topic or URL. For conversational contexts, an anonymized content signal. For search, query category or intent. When the content context is managed through AdCP content standards, reference the artifact directly via the artifact field.'
+        ),
+    ] = None
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Creative identifier')]
+    media_buy_id: Annotated[
+        str | None,
+        Field(
+            description="Publisher's media buy identifier for this creative. Present when the request spanned multiple media buys, so the buyer can correlate each creative to its media buy."
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None, Field(description='Format of this creative', title='Format ID')
+    ] = None
+    totals: Annotated[
+        Totals | None,
+        Field(
+            description='Aggregate delivery metrics across all variants of this creative',
+            title='Delivery Metrics',
+        ),
+    ] = None
+    variant_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of variants for this creative. When max_variants was specified in the request, this may exceed the number of items in the variants array.',
+            ge=0,
+        ),
+    ] = None
+    variants: Annotated[
+        list[Variant],
+        Field(
+            description='Variant-level delivery breakdown. Each variant includes the rendered manifest and delivery metrics. For standard creatives, contains a single variant. For asset group optimization, one per combination. For generative creative, one per generated execution. Empty when a creative has no variants yet.'
+        ),
+    ]
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    limit: Annotated[int, Field(description='Maximum number of creatives requested', ge=1)]
+    offset: Annotated[int, Field(description='Number of creatives skipped', ge=0)]
+    has_more: Annotated[
+        bool, Field(description='Whether more creatives are available beyond this page')
+    ]
+    total: Annotated[
+        int | None,
+        Field(description='Total number of creatives matching the request filters', ge=0),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class GetCreativeDeliveryResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    account_id: Annotated[
+        str | None,
+        Field(
+            description='Account identifier. Present when the response spans or is scoped to a specific account.'
+        ),
+    ] = None
+    media_buy_id: Annotated[
+        str | None,
+        Field(
+            description="Publisher's media buy identifier. Present when the request was scoped to a single media buy."
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(
+            description="ISO 4217 currency code for monetary values in this response (e.g., 'USD', 'EUR')",
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    reporting_period: Annotated[ReportingPeriod, Field(description='Date range for the report.')]
+    creatives: Annotated[
+        list[Creative], Field(description='Creative delivery data with variant breakdowns')
+    ]
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Pagination information. Present when the request included pagination parameters.'
+        ),
+    ] = None
+    errors: Annotated[
+        list[Error] | None, Field(description='Task-specific errors and warnings')
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/get_creative_features_request.py b/src/adcp/types/generated_poc/bundled/creative/get_creative_features_request.py
new file mode 100644
index 000000000..5434521cc
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/get_creative_features_request.py
@@ -0,0 +1,3408 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/get_creative_features_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy96(DeclaredBy):
+    pass
+
+
+class RenderGuidance96(RenderGuidance):
+    pass
+
+
+class Jurisdiction102(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance96 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure97(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction102] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem96(VerificationItem):
+    pass
+
+
+class Provenance97(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy96 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure97 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem96] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets132(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance97 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy97(DeclaredBy):
+    pass
+
+
+class RenderGuidance97(RenderGuidance):
+    pass
+
+
+class Jurisdiction103(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance97 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure98(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction103] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem97(VerificationItem):
+    pass
+
+
+class Provenance98(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy97 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure98 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem97] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets133(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance98 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy98(DeclaredBy):
+    pass
+
+
+class RenderGuidance98(RenderGuidance):
+    pass
+
+
+class Jurisdiction104(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance98 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure99(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction104] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem98(VerificationItem):
+    pass
+
+
+class Provenance99(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy98 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure99 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem98] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets134(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance99 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy99(DeclaredBy):
+    pass
+
+
+class RenderGuidance99(RenderGuidance):
+    pass
+
+
+class Jurisdiction105(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance99 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure100(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction105] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem99(VerificationItem):
+    pass
+
+
+class Provenance100(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy99 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure100 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem99] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets135(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance100 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy100(DeclaredBy):
+    pass
+
+
+class RenderGuidance100(RenderGuidance):
+    pass
+
+
+class Jurisdiction106(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance100 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure101(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction106] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem100(VerificationItem):
+    pass
+
+
+class Provenance101(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy100 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure101 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem100] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets136(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance101 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy101(DeclaredBy):
+    pass
+
+
+class RenderGuidance101(RenderGuidance):
+    pass
+
+
+class Jurisdiction107(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance101 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure102(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction107] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem101(VerificationItem):
+    pass
+
+
+class Provenance102(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy101 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure102 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem101] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets137(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance102 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy102(DeclaredBy):
+    pass
+
+
+class RenderGuidance102(RenderGuidance):
+    pass
+
+
+class Jurisdiction108(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance102 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure103(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction108] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem102(VerificationItem):
+    pass
+
+
+class Provenance103(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy102 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure103 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem102] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets138(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance103 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy103(DeclaredBy):
+    pass
+
+
+class RenderGuidance103(RenderGuidance):
+    pass
+
+
+class Jurisdiction109(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance103 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure104(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction109] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem103(VerificationItem):
+    pass
+
+
+class Provenance104(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy103 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure104 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem103] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets139(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance104 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method11(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method11, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy104(DeclaredBy):
+    pass
+
+
+class RenderGuidance104(RenderGuidance):
+    pass
+
+
+class Jurisdiction110(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance104 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure105(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction110] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem104(VerificationItem):
+    pass
+
+
+class Provenance105(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy104 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure105 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem104] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets140(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance105 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy105(DeclaredBy):
+    pass
+
+
+class RenderGuidance105(RenderGuidance):
+    pass
+
+
+class Jurisdiction111(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance105 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure106(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction111] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem105(VerificationItem):
+    pass
+
+
+class Provenance106(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy105 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure106 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem105] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets141(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance106 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent22(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy106(DeclaredBy):
+    pass
+
+
+class RenderGuidance106(RenderGuidance):
+    pass
+
+
+class Jurisdiction112(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance106 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure107(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction112] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem106(VerificationItem):
+    pass
+
+
+class Provenance107(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy106 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure107 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem106] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets142(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent22] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance107 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy107(DeclaredBy):
+    pass
+
+
+class RenderGuidance107(RenderGuidance):
+    pass
+
+
+class Jurisdiction113(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance107 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure108(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction113] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem107(VerificationItem):
+    pass
+
+
+class Provenance108(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy107 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure108 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem107] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets143(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent22] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance108 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets144(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role123(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role123,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction114(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction114] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets145(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets146(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class RightsAgent(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+    id: Annotated[str, Field(description='Agent identifier')]
+
+
+class Use(Enum):
+    likeness = 'likeness'
+    voice = 'voice'
+    name = 'name'
+    endorsement = 'endorsement'
+    motion_capture = 'motion_capture'
+    signature = 'signature'
+    catchphrase = 'catchphrase'
+    sync = 'sync'
+    background_music = 'background_music'
+    editorial = 'editorial'
+    commercial = 'commercial'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ExcludedCountry(Country):
+    pass
+
+
+class RightType(Enum):
+    talent = 'talent'
+    character = 'character'
+    brand_ip = 'brand_ip'
+    music = 'music'
+    stock_media = 'stock_media'
+
+
+class ApprovalStatus(Enum):
+    pending = 'pending'
+    approved = 'approved'
+    rejected = 'rejected'
+
+
+class Right(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from the acquire_rights response')
+    ]
+    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
+    valid_from: Annotated[
+        AwareDatetime | None, Field(description='Start of the rights validity period')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='End of the rights validity period. Creative should not be served after this time.'
+        ),
+    ] = None
+    uses: Annotated[
+        list[Use], Field(description='Rights uses covered by this constraint', min_length=1)
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.'
+        ),
+    ] = None
+    excluded_countries: Annotated[
+        list[ExcludedCountry] | None,
+        Field(
+            description='Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.'
+        ),
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(
+            description='Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.',
+            ge=1,
+        ),
+    ] = None
+    right_type: Annotated[
+        RightType | None,
+        Field(
+            description='Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.',
+            title='Right Type',
+        ),
+    ] = None
+    approval_status: Annotated[
+        ApprovalStatus | None,
+        Field(
+            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
+        ),
+    ] = None
+    verification_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Type36(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type36,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy108(DeclaredBy):
+    pass
+
+
+class RenderGuidance108(RenderGuidance):
+    pass
+
+
+class Jurisdiction115(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance108 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure109(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction115] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem108(VerificationItem):
+    pass
+
+
+class Provenance109(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy108 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure109 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem108] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class CreativeManifest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets132
+            | Assets133
+            | Assets134
+            | Assets135
+            | Assets136
+            | Assets137
+            | Assets138
+            | Assets139
+            | Assets140
+            | Assets141
+            | Assets142
+            | Assets143
+            | Assets144
+            | Assets145
+            | Assets146,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance109 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class GetCreativeFeaturesRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    creative_manifest: Annotated[
+        CreativeManifest,
+        Field(
+            description='The creative manifest to evaluate. Contains format_id and assets.',
+            title='Creative Manifest',
+        ),
+    ]
+    feature_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Optional filter to specific features. If omitted, returns all available features.',
+            min_length=1,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account13 | None,
+        Field(
+            description='Account for billing this evaluation. Required when the governance agent charges per evaluation.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/get_creative_features_response.py b/src/adcp/types/generated_poc/bundled/creative/get_creative_features_response.py
new file mode 100644
index 000000000..3f69c4f29
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/get_creative_features_response.py
@@ -0,0 +1,197 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/get_creative_features_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+
+class Result(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str,
+        Field(
+            description="The feature that was evaluated (e.g., 'auto_redirect', 'brand_consistency'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:eu_ai_act_article_50'). Unprefixed feature IDs are agent-defined."
+        ),
+    ]
+    value: Annotated[
+        bool | float | str,
+        Field(
+            description='The feature value. Type depends on feature definition: boolean for binary, number for quantitative, string for categorical.'
+        ),
+    ]
+    unit: Annotated[
+        str | None,
+        Field(
+            description="Unit of measurement for quantitative values (e.g., 'percentage', 'score')"
+        ),
+    ] = None
+    confidence: Annotated[
+        float | None, Field(description='Confidence score for this value (0-1)', ge=0.0, le=1.0)
+    ] = None
+    measured_at: Annotated[
+        AwareDatetime | None, Field(description='When this feature was evaluated')
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(description='When this evaluation expires and should be refreshed'),
+    ] = None
+    methodology_version: Annotated[
+        str | None, Field(description='Version of the methodology used to evaluate this feature')
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None,
+        Field(description='Additional vendor-specific details about this evaluation'),
+    ] = None
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this feature was evaluated to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Consumption(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    tokens: Annotated[
+        int | None,
+        Field(description='LLM or generation tokens consumed during creative generation.', ge=0),
+    ] = None
+    images_generated: Annotated[
+        int | None, Field(description='Number of images produced during generation.', ge=0)
+    ] = None
+    renders: Annotated[
+        int | None, Field(description='Number of render passes performed (video, animation).', ge=0)
+    ] = None
+    duration_seconds: Annotated[
+        float | None,
+        Field(
+            description='Processing time billed, in seconds. For compute-time pricing models.',
+            ge=0.0,
+        ),
+    ] = None
+
+
+class GetCreativeFeaturesResponse3(AdCPBaseModel):
+    results: Annotated[list[Result], Field(description='Feature values for the evaluated creative')]
+    detail_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to the vendor's full assessment report. The vendor controls what information is disclosed and access control."
+        ),
+    ] = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description='Which rate card pricing option was applied for this evaluation. Present when the governance agent charges for evaluations and account was provided in the request.'
+        ),
+    ] = None
+    vendor_cost: Annotated[
+        float | None,
+        Field(description='Cost incurred for this evaluation, denominated in currency.', ge=0.0),
+    ] = None
+    currency: Annotated[
+        str | None,
+        Field(description='ISO 4217 currency code for vendor_cost.', pattern='^[A-Z]{3}$'),
+    ] = None
+    consumption: Annotated[
+        Consumption | None,
+        Field(
+            description='Structured consumption details for this evaluation. Informational — lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth.',
+            title='Creative Consumption',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class GetCreativeFeaturesResponse4(AdCPBaseModel):
+    errors: list[Error]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+GetCreativeFeaturesResponse = GetCreativeFeaturesResponse3 | GetCreativeFeaturesResponse4
diff --git a/src/adcp/types/generated_poc/bundled/creative/list_creative_formats_request.py b/src/adcp/types/generated_poc/bundled/creative/list_creative_formats_request.py
new file mode 100644
index 000000000..845af8f95
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/list_creative_formats_request.py
@@ -0,0 +1,323 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/list_creative_formats_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Type(Enum):
+    audio = 'audio'
+    video = 'video'
+    display = 'display'
+    dooh = 'dooh'
+
+
+class AssetType(Enum):
+    image = 'image'
+    video = 'video'
+    audio = 'audio'
+    text = 'text'
+    html = 'html'
+    javascript = 'javascript'
+    url = 'url'
+
+
+class WcagLevel(Enum):
+    A = 'A'
+    AA = 'AA'
+    AAA = 'AAA'
+
+
+class DisclosurePosition(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class DisclosurePersistenceEnum(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class OutputFormatId(FormatId):
+    pass
+
+
+class InputFormatId(FormatId):
+    pass
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account26(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class ListCreativeFormatsRequestCreativeAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(description='Return only these specific format IDs', min_length=1),
+    ] = None
+    type: Annotated[
+        Type | None,
+        Field(
+            description='Filter by format type (technical categories with distinct requirements)'
+        ),
+    ] = None
+    asset_types: Annotated[
+        list[AssetType] | None,
+        Field(
+            description="Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
+            min_length=1,
+        ),
+    ] = None
+    max_width: Annotated[
+        int | None,
+        Field(
+            description='Maximum width in pixels (inclusive). Returns formats with width <= this value. Omit for responsive/fluid formats.'
+        ),
+    ] = None
+    max_height: Annotated[
+        int | None,
+        Field(
+            description='Maximum height in pixels (inclusive). Returns formats with height <= this value. Omit for responsive/fluid formats.'
+        ),
+    ] = None
+    min_width: Annotated[
+        int | None,
+        Field(
+            description='Minimum width in pixels (inclusive). Returns formats with width >= this value.'
+        ),
+    ] = None
+    min_height: Annotated[
+        int | None,
+        Field(
+            description='Minimum height in pixels (inclusive). Returns formats with height >= this value.'
+        ),
+    ] = None
+    is_responsive: Annotated[
+        bool | None,
+        Field(
+            description='Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.'
+        ),
+    ] = None
+    name_search: Annotated[
+        str | None, Field(description='Search for formats by name (case-insensitive partial match)')
+    ] = None
+    wcag_level: Annotated[
+        WcagLevel | None,
+        Field(
+            description='Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)',
+            title='WCAG Level',
+        ),
+    ] = None
+    disclosure_positions: Annotated[
+        list[DisclosurePosition] | None,
+        Field(
+            description="Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
+            min_length=1,
+        ),
+    ] = None
+    disclosure_persistence: Annotated[
+        list[DisclosurePersistenceEnum] | None,
+        Field(
+            description='Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).',
+            min_length=1,
+        ),
+    ] = None
+    output_format_ids: Annotated[
+        list[OutputFormatId] | None,
+        Field(
+            description="Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs — inspect each result's input_format_ids to see what inputs they accept.",
+            min_length=1,
+        ),
+    ] = None
+    input_format_ids: Annotated[
+        list[InputFormatId] | None,
+        Field(
+            description="Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input — inspect each result's output_format_ids to see what they can produce.",
+            min_length=1,
+        ),
+    ] = None
+    include_pricing: Annotated[
+        bool | None,
+        Field(
+            description='Include pricing_options on each format. Used by transformation and generation agents that charge per format or per unit of work. Requires account. When false or omitted, pricing is not computed.'
+        ),
+    ] = False
+    account: Annotated[
+        Account | Account26 | None,
+        Field(
+            description="Account reference for pricing. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each format.",
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/list_creative_formats_response.py b/src/adcp/types/generated_poc/bundled/creative/list_creative_formats_response.py
new file mode 100644
index 000000000..bc77ea045
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/list_creative_formats_response.py
@@ -0,0 +1,2086 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/list_creative_formats_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class AcceptsParameter(Enum):
+    dimensions = 'dimensions'
+    duration = 'duration'
+
+
+class Unit(Enum):
+    px = 'px'
+    dp = 'dp'
+    inches = 'inches'
+    cm = 'cm'
+    mm = 'mm'
+    pt = 'pt'
+
+
+class Responsive(AdCPBaseModel):
+    width: bool
+    height: bool
+
+
+class Dimensions(AdCPBaseModel):
+    width: Annotated[
+        float | None,
+        Field(description='Fixed width. Interpretation depends on unit (default: pixels).', gt=0.0),
+    ] = None
+    height: Annotated[
+        float | None,
+        Field(
+            description='Fixed height. Interpretation depends on unit (default: pixels).', gt=0.0
+        ),
+    ] = None
+    min_width: Annotated[
+        float | None, Field(description='Minimum width for responsive renders', gt=0.0)
+    ] = None
+    min_height: Annotated[
+        float | None, Field(description='Minimum height for responsive renders', gt=0.0)
+    ] = None
+    max_width: Annotated[
+        float | None, Field(description='Maximum width for responsive renders', gt=0.0)
+    ] = None
+    max_height: Annotated[
+        float | None, Field(description='Maximum height for responsive renders', gt=0.0)
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    responsive: Annotated[
+        Responsive | None, Field(description='Indicates which dimensions are responsive/fluid')
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+
+
+class Renders(AdCPBaseModel):
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+        ),
+    ]
+    parameters_from_format_id: Annotated[
+        bool | None,
+        Field(
+            description='When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly.'
+        ),
+    ] = None
+    dimensions: Annotated[
+        Dimensions,
+        Field(
+            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
+        ),
+    ]
+
+
+class Dimensions11(Dimensions):
+    pass
+
+
+class Renders11(AdCPBaseModel):
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+        ),
+    ]
+    parameters_from_format_id: Annotated[
+        Literal[True],
+        Field(
+            description='When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly.'
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions11 | None,
+        Field(
+            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
+        ),
+    ] = None
+
+
+class Format(Enum):
+    jpg = 'jpg'
+    jpeg = 'jpeg'
+    png = 'png'
+    gif = 'gif'
+    webp = 'webp'
+    svg = 'svg'
+    avif = 'avif'
+    tiff = 'tiff'
+    pdf = 'pdf'
+    eps = 'eps'
+
+
+class Bleed(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    uniform: Annotated[float, Field(description='Same bleed on all four sides', ge=0.0)]
+
+
+class Bleed9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    top: Annotated[float, Field(ge=0.0)]
+    right: Annotated[float, Field(ge=0.0)]
+    bottom: Annotated[float, Field(ge=0.0)]
+    left: Annotated[float, Field(ge=0.0)]
+
+
+class ColorSpace(Enum):
+    rgb = 'rgb'
+    cmyk = 'cmyk'
+    grayscale = 'grayscale'
+
+
+class Requirements(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[
+        float | None,
+        Field(
+            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    max_width: Annotated[
+        float | None,
+        Field(
+            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    min_height: Annotated[
+        float | None,
+        Field(
+            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    max_height: Annotated[
+        float | None,
+        Field(
+            description='Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
+    min_dpi: Annotated[
+        int | None,
+        Field(
+            description='Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI.',
+            ge=1,
+        ),
+    ] = None
+    bleed: Annotated[
+        Bleed | Bleed9 | None,
+        Field(
+            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
+        ),
+    ] = None
+    color_space: Annotated[
+        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
+    ] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    transparency_required: Annotated[
+        bool | None,
+        Field(
+            description='Whether the image must support transparency (requires PNG, WebP, or GIF)'
+        ),
+    ] = None
+    animation_allowed: Annotated[
+        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
+    ] = None
+    max_animation_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
+            ge=0,
+        ),
+    ] = None
+    max_weight_grams: Annotated[
+        int | None,
+        Field(
+            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
+            gt=0,
+        ),
+    ] = None
+
+
+class Container(Enum):
+    mp4 = 'mp4'
+    webm = 'webm'
+    mov = 'mov'
+    avi = 'avi'
+    mkv = 'mkv'
+
+
+class Codec(Enum):
+    h264 = 'h264'
+    h265 = 'h265'
+    vp8 = 'vp8'
+    vp9 = 'vp9'
+    av1 = 'av1'
+    prores = 'prores'
+
+
+class FrameRate(RootModel[float]):
+    root: Annotated[float, Field(ge=1.0)]
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioCodec(Enum):
+    aac = 'aac'
+    pcm = 'pcm'
+    ac3 = 'ac3'
+    eac3 = 'eac3'
+    mp3 = 'mp3'
+    opus = 'opus'
+    vorbis = 'vorbis'
+    flac = 'flac'
+
+
+class AudioSampleRate(RootModel[int]):
+    root: Annotated[int, Field(ge=1)]
+
+
+class AudioChannel(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class Requirements26(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[int | None, Field(description='Minimum width in pixels', ge=1)] = None
+    max_width: Annotated[int | None, Field(description='Maximum width in pixels', ge=1)] = None
+    min_height: Annotated[int | None, Field(description='Minimum height in pixels', ge=1)] = None
+    max_height: Annotated[int | None, Field(description='Maximum height in pixels', ge=1)] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(description="Required aspect ratio (e.g., '16:9', '9:16')", pattern='^\\d+:\\d+$'),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None, Field(description='Minimum duration in milliseconds', ge=1)
+    ] = None
+    max_duration_ms: Annotated[
+        int | None, Field(description='Maximum duration in milliseconds', ge=1)
+    ] = None
+    containers: Annotated[
+        list[Container] | None, Field(description='Accepted video container formats')
+    ] = None
+    codecs: Annotated[list[Codec] | None, Field(description='Accepted video codecs')] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    min_bitrate_kbps: Annotated[
+        int | None, Field(description='Minimum video bitrate in kilobits per second', ge=1)
+    ] = None
+    max_bitrate_kbps: Annotated[
+        int | None, Field(description='Maximum video bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rates: Annotated[
+        list[FrameRate] | None,
+        Field(description='Accepted frame rates in frames per second (e.g., [24, 30, 60])'),
+    ] = None
+    audio_required: Annotated[
+        bool | None, Field(description='Whether the video must include an audio track')
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(
+            description='Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing.'
+        ),
+    ] = None
+    scan_type: Annotated[
+        ScanType | None,
+        Field(description='Required scan type. Modern delivery requires progressive scan.'),
+    ] = None
+    gop_type: Annotated[
+        GopType | None,
+        Field(
+            description='Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points.'
+        ),
+    ] = None
+    min_gop_interval_seconds: Annotated[
+        float | None, Field(description='Minimum keyframe interval in seconds', ge=0.0)
+    ] = None
+    max_gop_interval_seconds: Annotated[
+        float | None,
+        Field(
+            description='Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals.',
+            ge=0.0,
+        ),
+    ] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None,
+        Field(
+            description="Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+        ),
+    ] = None
+    audio_codecs: Annotated[
+        list[AudioCodec] | None,
+        Field(description="Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"),
+    ] = None
+    audio_sample_rates: Annotated[
+        list[AudioSampleRate] | None,
+        Field(description='Accepted audio sample rates in Hz (e.g., [44100, 48000])'),
+    ] = None
+    audio_channels: Annotated[
+        list[AudioChannel] | None, Field(description='Accepted audio channel configurations')
+    ] = None
+    loudness_lufs: Annotated[
+        float | None,
+        Field(
+            description='Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)'
+        ),
+    ] = None
+    loudness_tolerance_db: Annotated[
+        float | None,
+        Field(
+            description='Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)',
+            ge=0.0,
+        ),
+    ] = None
+    true_peak_dbfs: Annotated[
+        float | None, Field(description='Maximum true peak level in dBFS (e.g., -2 for broadcast)')
+    ] = None
+
+
+class Format14(Enum):
+    mp3 = 'mp3'
+    aac = 'aac'
+    wav = 'wav'
+    ogg = 'ogg'
+    flac = 'flac'
+
+
+class SampleRate(AudioSampleRate):
+    pass
+
+
+class Channel(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+
+
+class Requirements27(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_duration_ms: Annotated[
+        int | None, Field(description='Minimum duration in milliseconds', ge=1)
+    ] = None
+    max_duration_ms: Annotated[
+        int | None, Field(description='Maximum duration in milliseconds', ge=1)
+    ] = None
+    formats: Annotated[list[Format14] | None, Field(description='Accepted audio file formats')] = (
+        None
+    )
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    sample_rates: Annotated[
+        list[SampleRate] | None,
+        Field(description='Accepted sample rates in Hz (e.g., [44100, 48000])'),
+    ] = None
+    channels: Annotated[
+        list[Channel] | None, Field(description='Accepted audio channel configurations')
+    ] = None
+    min_bitrate_kbps: Annotated[
+        int | None, Field(description='Minimum audio bitrate in kilobits per second', ge=1)
+    ] = None
+    max_bitrate_kbps: Annotated[
+        int | None, Field(description='Maximum audio bitrate in kilobits per second', ge=1)
+    ] = None
+
+
+class Requirements28(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_length: Annotated[int | None, Field(description='Minimum character length', ge=0)] = None
+    max_length: Annotated[int | None, Field(description='Maximum character length', ge=1)] = None
+    min_lines: Annotated[int | None, Field(description='Minimum number of lines', ge=1)] = None
+    max_lines: Annotated[int | None, Field(description='Maximum number of lines', ge=1)] = None
+    character_pattern: Annotated[
+        str | None,
+        Field(
+            description="Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+        ),
+    ] = None
+    prohibited_terms: Annotated[
+        list[str] | None, Field(description='List of prohibited words or phrases')
+    ] = None
+
+
+class Requirements29(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_length: Annotated[int | None, Field(description='Maximum character length', ge=1)] = None
+
+
+class Sandbox(Enum):
+    none = 'none'
+    iframe = 'iframe'
+    safeframe = 'safeframe'
+    fencedframe = 'fencedframe'
+
+
+class Requirements30(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes for the HTML asset', ge=1)
+    ] = None
+    sandbox: Annotated[
+        Sandbox | None,
+        Field(
+            description="Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+        ),
+    ] = Sandbox.none
+    external_resources_allowed: Annotated[
+        bool | None,
+        Field(
+            description='Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled.'
+        ),
+    ] = None
+    allowed_external_domains: Annotated[
+        list[str] | None,
+        Field(
+            description='List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true.'
+        ),
+    ] = None
+
+
+class Requirements31(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+
+
+class ModuleType(Enum):
+    script = 'script'
+    module = 'module'
+    iife = 'iife'
+
+
+class Requirements32(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_file_size_kb: Annotated[
+        int | None,
+        Field(description='Maximum file size in kilobytes for the JavaScript asset', ge=1),
+    ] = None
+    module_type: Annotated[
+        ModuleType | None,
+        Field(
+            description="Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+        ),
+    ] = None
+    strict_mode_required: Annotated[
+        bool | None, Field(description='Whether the JavaScript must use strict mode')
+    ] = None
+    external_resources_allowed: Annotated[
+        bool | None,
+        Field(description='Whether the JavaScript can load external resources dynamically'),
+    ] = None
+    allowed_external_domains: Annotated[
+        list[str] | None,
+        Field(
+            description='List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true.'
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class Requirements33(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vast_version: Annotated[VastVersion | None, Field(description='Required VAST version')] = None
+
+
+class Requirements34(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    daast_version: Annotated[
+        Literal['1.0'] | None,
+        Field(description='Required DAAST version. DAAST 1.0 is the current IAB standard.'),
+    ] = None
+
+
+class Role(Enum):
+    clickthrough = 'clickthrough'
+    landing_page = 'landing_page'
+    impression_tracker = 'impression_tracker'
+    click_tracker = 'click_tracker'
+    viewability_tracker = 'viewability_tracker'
+    third_party_tracker = 'third_party_tracker'
+
+
+class Protocol(Enum):
+    https = 'https'
+    http = 'http'
+
+
+class Requirements35(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    role: Annotated[
+        Role | None,
+        Field(
+            description='Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum.'
+        ),
+    ] = None
+    protocols: Annotated[
+        list[Protocol] | None,
+        Field(description='Allowed URL protocols. HTTPS is recommended for all ad URLs.'),
+    ] = None
+    allowed_domains: Annotated[
+        list[str] | None, Field(description='List of allowed domains for the URL')
+    ] = None
+    max_length: Annotated[
+        int | None, Field(description='Maximum URL length in characters', ge=1)
+    ] = None
+    macro_support: Annotated[
+        bool | None,
+        Field(description='Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})'),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class Requirements36(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    methods: Annotated[list[Method] | None, Field(description='Allowed HTTP methods')] = None
+
+
+class CatalogType(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class AssetType(Enum):
+    image = 'image'
+    video = 'video'
+    audio = 'audio'
+    text = 'text'
+    markdown = 'markdown'
+    html = 'html'
+    css = 'css'
+    javascript = 'javascript'
+    vast = 'vast'
+    daast = 'daast'
+    url = 'url'
+    webhook = 'webhook'
+    brief = 'brief'
+    catalog = 'catalog'
+
+
+class Bleed10(Bleed):
+    pass
+
+
+class Bleed11(Bleed9):
+    pass
+
+
+class AssetRequirements(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[
+        float | None,
+        Field(
+            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    max_width: Annotated[
+        float | None,
+        Field(
+            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    min_height: Annotated[
+        float | None,
+        Field(
+            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    max_height: Annotated[
+        float | None,
+        Field(
+            description='Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
+    min_dpi: Annotated[
+        int | None,
+        Field(
+            description='Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI.',
+            ge=1,
+        ),
+    ] = None
+    bleed: Annotated[
+        Bleed10 | Bleed11 | None,
+        Field(
+            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
+        ),
+    ] = None
+    color_space: Annotated[
+        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
+    ] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    transparency_required: Annotated[
+        bool | None,
+        Field(
+            description='Whether the image must support transparency (requires PNG, WebP, or GIF)'
+        ),
+    ] = None
+    animation_allowed: Annotated[
+        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
+    ] = None
+    max_animation_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
+            ge=0,
+        ),
+    ] = None
+    max_weight_grams: Annotated[
+        int | None,
+        Field(
+            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
+            gt=0,
+        ),
+    ] = None
+
+
+class AssetRequirements14(Requirements26):
+    pass
+
+
+class AssetRequirements15(Requirements27):
+    pass
+
+
+class AssetRequirements16(Requirements28):
+    pass
+
+
+class AssetRequirements17(Requirements29):
+    pass
+
+
+class AssetRequirements18(Requirements30):
+    pass
+
+
+class AssetRequirements19(Requirements31):
+    pass
+
+
+class AssetRequirements20(Requirements32):
+    pass
+
+
+class AssetRequirements21(Requirements33):
+    pass
+
+
+class AssetRequirements22(Requirements34):
+    pass
+
+
+class AssetRequirements23(Requirements35):
+    pass
+
+
+class AssetRequirements24(Requirements36):
+    pass
+
+
+class OfferingAssetConstraint(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    asset_group_id: Annotated[
+        str,
+        Field(
+            description="The asset group this constraint applies to. Values are format-defined vocabulary — each format chooses its own group IDs (e.g., 'headlines', 'images', 'videos'). Buyers discover them via list_creative_formats."
+        ),
+    ]
+    asset_type: Annotated[
+        AssetType,
+        Field(description='The expected content type for this group.', title='Asset Content Type'),
+    ]
+    required: Annotated[
+        bool | None,
+        Field(
+            description='Whether this asset group must be present in each offering. Defaults to true.'
+        ),
+    ] = True
+    min_count: Annotated[
+        int | None, Field(description='Minimum number of items required in this group.', ge=1)
+    ] = None
+    max_count: Annotated[
+        int | None, Field(description='Maximum number of items allowed in this group.', ge=1)
+    ] = None
+    asset_requirements: Annotated[
+        AssetRequirements
+        | AssetRequirements14
+        | AssetRequirements15
+        | AssetRequirements16
+        | AssetRequirements17
+        | AssetRequirements18
+        | AssetRequirements19
+        | AssetRequirements20
+        | AssetRequirements21
+        | AssetRequirements22
+        | AssetRequirements23
+        | AssetRequirements24
+        | None,
+        Field(
+            description='Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group.',
+            title='Asset Requirements',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class SelectionMode(Enum):
+    sequential = 'sequential'
+    optimize = 'optimize'
+
+
+class Bleed12(Bleed):
+    pass
+
+
+class Bleed13(Bleed9):
+    pass
+
+
+class Requirements38(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[
+        float | None,
+        Field(
+            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    max_width: Annotated[
+        float | None,
+        Field(
+            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    min_height: Annotated[
+        float | None,
+        Field(
+            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    max_height: Annotated[
+        float | None,
+        Field(
+            description='Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
+    min_dpi: Annotated[
+        int | None,
+        Field(
+            description='Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI.',
+            ge=1,
+        ),
+    ] = None
+    bleed: Annotated[
+        Bleed12 | Bleed13 | None,
+        Field(
+            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
+        ),
+    ] = None
+    color_space: Annotated[
+        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
+    ] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    transparency_required: Annotated[
+        bool | None,
+        Field(
+            description='Whether the image must support transparency (requires PNG, WebP, or GIF)'
+        ),
+    ] = None
+    animation_allowed: Annotated[
+        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
+    ] = None
+    max_animation_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
+            ge=0,
+        ),
+    ] = None
+    max_weight_grams: Annotated[
+        int | None,
+        Field(
+            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
+            gt=0,
+        ),
+    ] = None
+
+
+class Requirements39(Requirements26):
+    pass
+
+
+class Requirements40(Requirements27):
+    pass
+
+
+class Requirements41(Requirements28):
+    pass
+
+
+class Requirements42(Requirements29):
+    pass
+
+
+class Requirements43(Requirements30):
+    pass
+
+
+class Requirements44(Requirements31):
+    pass
+
+
+class Requirements45(Requirements32):
+    pass
+
+
+class Requirements46(Requirements33):
+    pass
+
+
+class Requirements47(Requirements34):
+    pass
+
+
+class Requirements48(Requirements35):
+    pass
+
+
+class Requirements49(Requirements36):
+    pass
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class InputFormatId(FormatId):
+    pass
+
+
+class OutputFormatId(FormatId):
+    pass
+
+
+class FormatCard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Creative format defining the card layout (typically format_card_standard)',
+            title='Format ID',
+        ),
+    ]
+    manifest: Annotated[
+        dict[str, Any],
+        Field(description='Asset manifest for rendering the card, structure defined by the format'),
+    ]
+
+
+class WcagLevel(Enum):
+    A = 'A'
+    AA = 'AA'
+    AAA = 'AAA'
+
+
+class Accessibility(AdCPBaseModel):
+    wcag_level: Annotated[
+        WcagLevel,
+        Field(
+            description='WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level.',
+            title='WCAG Level',
+        ),
+    ]
+    requires_accessible_assets: Annotated[
+        bool | None,
+        Field(
+            description='When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties.'
+        ),
+    ] = None
+
+
+class SupportedDisclosurePosition(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class PersistenceEnum(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class DisclosureCapability(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    position: Annotated[
+        SupportedDisclosurePosition,
+        Field(description='The disclosure position', title='Disclosure Position'),
+    ]
+    persistence: Annotated[
+        list[PersistenceEnum],
+        Field(description='Persistence modes this position supports', min_length=1),
+    ]
+
+
+class FormatCardDetailed(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Creative format defining the detailed card layout (typically format_card_detailed)',
+            title='Format ID',
+        ),
+    ]
+    manifest: Annotated[
+        dict[str, Any],
+        Field(
+            description='Asset manifest for rendering the detailed card, structure defined by the format'
+        ),
+    ]
+
+
+class ReportedMetric(Enum):
+    impressions = 'impressions'
+    spend = 'spend'
+    clicks = 'clicks'
+    ctr = 'ctr'
+    video_completions = 'video_completions'
+    completion_rate = 'completion_rate'
+    conversions = 'conversions'
+    conversion_value = 'conversion_value'
+    roas = 'roas'
+    cost_per_acquisition = 'cost_per_acquisition'
+    new_to_brand_rate = 'new_to_brand_rate'
+    viewability = 'viewability'
+    engagement_rate = 'engagement_rate'
+    views = 'views'
+    completed_views = 'completed_views'
+    leads = 'leads'
+    reach = 'reach'
+    frequency = 'frequency'
+    grps = 'grps'
+    quartile_data = 'quartile_data'
+    dooh_metrics = 'dooh_metrics'
+    cost_per_click = 'cost_per_click'
+
+
+class PricingOption151(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption152(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption153(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption154(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption155(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption156(PricingOption151, PricingOption155):
+    pass
+
+
+class PricingOption157(PricingOption152, PricingOption155):
+    pass
+
+
+class PricingOption158(PricingOption153, PricingOption155):
+    pass
+
+
+class PricingOption159(PricingOption154, PricingOption155):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption156 | PricingOption157 | PricingOption158 | PricingOption159]
+):
+    root: Annotated[
+        PricingOption156 | PricingOption157 | PricingOption158 | PricingOption159,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Capability(Enum):
+    validation = 'validation'
+    assembly = 'assembly'
+    generation = 'generation'
+    preview = 'preview'
+    delivery = 'delivery'
+
+
+class CreativeAgent(AdCPBaseModel):
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
+        ),
+    ]
+    agent_name: Annotated[
+        str | None, Field(description='Human-readable name for the creative agent')
+    ] = None
+    capabilities: Annotated[
+        list[Capability] | None, Field(description='Capabilities this creative agent provides')
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class BaseGroupAsset(RootModel[Any]):
+    root: Any
+
+
+class BaseIndividualAsset(BaseGroupAsset):
+    pass
+
+
+class AssetPoolBinding(BaseGroupAsset):
+    pass
+
+
+class ScalarBinding(BaseGroupAsset):
+    pass
+
+
+class Assets(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['image'] = 'image'
+    requirements: Annotated[
+        Requirements | None,
+        Field(
+            description='Requirements for image creative assets. These define the technical constraints for image files.',
+            title='Image Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets187(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['video'] = 'video'
+    requirements: Annotated[
+        Requirements26 | None,
+        Field(
+            description='Requirements for video creative assets. These define the technical constraints for video files.',
+            title='Video Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets188(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['audio'] = 'audio'
+    requirements: Annotated[
+        Requirements27 | None,
+        Field(
+            description='Requirements for audio creative assets.', title='Audio Asset Requirements'
+        ),
+    ] = None
+
+
+class Assets189(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['text'] = 'text'
+    requirements: Annotated[
+        Requirements28 | None,
+        Field(
+            description='Requirements for text creative assets such as headlines, body copy, and CTAs.',
+            title='Text Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets190(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['markdown'] = 'markdown'
+    requirements: Annotated[
+        Requirements29 | None,
+        Field(
+            description='Requirements for markdown creative assets.',
+            title='Markdown Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets191(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['html'] = 'html'
+    requirements: Annotated[
+        Requirements30 | None,
+        Field(
+            description='Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.',
+            title='HTML Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets192(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['css'] = 'css'
+    requirements: Annotated[
+        Requirements31 | None,
+        Field(description='Requirements for CSS creative assets.', title='CSS Asset Requirements'),
+    ] = None
+
+
+class Assets193(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['javascript'] = 'javascript'
+    requirements: Annotated[
+        Requirements32 | None,
+        Field(
+            description='Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.',
+            title='JavaScript Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets194(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['vast'] = 'vast'
+    requirements: Annotated[
+        Requirements33 | None,
+        Field(
+            description='Requirements for VAST (Video Ad Serving Template) creative assets.',
+            title='VAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets195(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['daast'] = 'daast'
+    requirements: Annotated[
+        Requirements34 | None,
+        Field(
+            description='Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.',
+            title='DAAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets196(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['url'] = 'url'
+    requirements: Annotated[
+        Requirements35 | None,
+        Field(
+            description='Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.',
+            title='URL Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets197(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['webhook'] = 'webhook'
+    requirements: Annotated[
+        Requirements36 | None,
+        Field(
+            description='Requirements for webhook creative assets.',
+            title='Webhook Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets198(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['brief'] = 'brief'
+
+
+class FieldBindings(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['catalog_group']
+    format_group_id: Annotated[
+        str,
+        Field(description="The asset_group_id of a repeatable_group in the format's assets array."),
+    ]
+    catalog_item: Annotated[
+        Literal[True],
+        Field(
+            description="Each repetition of the format's repeatable_group maps to one item from the catalog."
+        ),
+    ]
+    per_item_bindings: Annotated[
+        list[ScalarBinding | AssetPoolBinding] | None,
+        Field(
+            description='Scalar and asset pool bindings that apply within each repetition of the group. Nested catalog_group bindings are not permitted.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Requirements37(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_type: Annotated[
+        CatalogType,
+        Field(description='The catalog type this requirement applies to', title='Catalog Type'),
+    ]
+    required: Annotated[
+        bool | None,
+        Field(
+            description='Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.'
+        ),
+    ] = True
+    min_items: Annotated[
+        int | None,
+        Field(
+            description='Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)',
+            ge=1,
+        ),
+    ] = None
+    max_items: Annotated[
+        int | None,
+        Field(
+            description='Maximum number of items the format can render. Items beyond this limit are ignored. Useful for fixed-slot layouts (e.g., a 3-product card) or feed-size constraints.',
+            ge=1,
+        ),
+    ] = None
+    required_fields: Annotated[
+        list[str] | None,
+        Field(
+            description="Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
+            min_length=1,
+        ),
+    ] = None
+    feed_formats: Annotated[
+        list[FeedFormat] | None,
+        Field(
+            description='Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.',
+            min_length=1,
+        ),
+    ] = None
+    offering_asset_constraints: Annotated[
+        list[OfferingAssetConstraint] | None,
+        Field(
+            description="Per-item creative asset requirements. Declares what asset groups (headlines, images, videos) each catalog item must provide in its assets array, along with count bounds and per-asset technical constraints. Applicable to 'offering' and all vertical catalog types (hotel, flight, job, etc.) whose items carry typed assets.",
+            min_length=1,
+        ),
+    ] = None
+    field_bindings: Annotated[
+        list[ScalarBinding | AssetPoolBinding | FieldBindings] | None,
+        Field(
+            description='Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional — creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id → catalog_field), asset pools (asset_id → asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets199(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['catalog'] = 'catalog'
+    requirements: Annotated[
+        Requirements37 | None,
+        Field(
+            description='Format-level declaration of what catalog feeds a creative needs. Formats that render product listings, store locators, or promotional content declare which catalog types must be synced and what fields each catalog must provide. Buyers use this to ensure the right catalogs are synced before submitting creatives.',
+            title='Catalog Requirements',
+        ),
+    ] = None
+
+
+class Assets201(AdCPBaseModel):
+    asset_type: Literal['image'] = 'image'
+    requirements: Annotated[
+        Requirements38 | None,
+        Field(
+            description='Requirements for image creative assets. These define the technical constraints for image files.',
+            title='Image Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets202(AdCPBaseModel):
+    asset_type: Literal['video'] = 'video'
+    requirements: Annotated[
+        Requirements39 | None,
+        Field(
+            description='Requirements for video creative assets. These define the technical constraints for video files.',
+            title='Video Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets203(AdCPBaseModel):
+    asset_type: Literal['audio'] = 'audio'
+    requirements: Annotated[
+        Requirements40 | None,
+        Field(
+            description='Requirements for audio creative assets.', title='Audio Asset Requirements'
+        ),
+    ] = None
+
+
+class Assets204(AdCPBaseModel):
+    asset_type: Literal['text'] = 'text'
+    requirements: Annotated[
+        Requirements41 | None,
+        Field(
+            description='Requirements for text creative assets such as headlines, body copy, and CTAs.',
+            title='Text Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets205(AdCPBaseModel):
+    asset_type: Literal['markdown'] = 'markdown'
+    requirements: Annotated[
+        Requirements42 | None,
+        Field(
+            description='Requirements for markdown creative assets.',
+            title='Markdown Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets206(AdCPBaseModel):
+    asset_type: Literal['html'] = 'html'
+    requirements: Annotated[
+        Requirements43 | None,
+        Field(
+            description='Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.',
+            title='HTML Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets207(AdCPBaseModel):
+    asset_type: Literal['css'] = 'css'
+    requirements: Annotated[
+        Requirements44 | None,
+        Field(description='Requirements for CSS creative assets.', title='CSS Asset Requirements'),
+    ] = None
+
+
+class Assets208(AdCPBaseModel):
+    asset_type: Literal['javascript'] = 'javascript'
+    requirements: Annotated[
+        Requirements45 | None,
+        Field(
+            description='Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.',
+            title='JavaScript Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets209(AdCPBaseModel):
+    asset_type: Literal['vast'] = 'vast'
+    requirements: Annotated[
+        Requirements46 | None,
+        Field(
+            description='Requirements for VAST (Video Ad Serving Template) creative assets.',
+            title='VAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets210(AdCPBaseModel):
+    asset_type: Literal['daast'] = 'daast'
+    requirements: Annotated[
+        Requirements47 | None,
+        Field(
+            description='Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.',
+            title='DAAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets211(AdCPBaseModel):
+    asset_type: Literal['url'] = 'url'
+    requirements: Annotated[
+        Requirements48 | None,
+        Field(
+            description='Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.',
+            title='URL Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets212(AdCPBaseModel):
+    asset_type: Literal['webhook'] = 'webhook'
+    requirements: Annotated[
+        Requirements49 | None,
+        Field(
+            description='Requirements for webhook creative assets.',
+            title='Webhook Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets200(AdCPBaseModel):
+    item_type: Annotated[
+        Literal['repeatable_group'],
+        Field(description='Discriminator indicating this is a repeatable asset group'),
+    ]
+    asset_group_id: Annotated[
+        str, Field(description="Identifier for this asset group (e.g., 'product', 'slide', 'card')")
+    ]
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether this asset group is required. If true, at least min_count repetitions must be provided.'
+        ),
+    ]
+    min_count: Annotated[
+        int,
+        Field(
+            description='Minimum number of repetitions required (if group is required) or allowed (if optional)',
+            ge=0,
+        ),
+    ]
+    max_count: Annotated[int, Field(description='Maximum number of repetitions allowed', ge=1)]
+    selection_mode: Annotated[
+        SelectionMode | None,
+        Field(
+            description="How the platform uses repetitions of this group. 'sequential' means all items display in order (carousels, playlists). 'optimize' means the platform selects the best-performing combination from alternatives (asset group optimization like Meta Advantage+ or Google Pmax)."
+        ),
+    ] = SelectionMode.sequential
+    assets: Annotated[
+        list[
+            Assets201
+            | Assets202
+            | Assets203
+            | Assets204
+            | Assets205
+            | Assets206
+            | Assets207
+            | Assets208
+            | Assets209
+            | Assets210
+            | Assets211
+            | Assets212
+        ],
+        Field(description='Assets within each repetition of this group'),
+    ]
+
+
+class Format12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Structured format identifier with agent URL and format name',
+            title='Format ID',
+        ),
+    ]
+    name: Annotated[str, Field(description='Human-readable format name')]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Plain text explanation of what this format does and what assets it requires'
+        ),
+    ] = None
+    example_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL to showcase page with examples and interactive demos of this format'
+        ),
+    ] = None
+    accepts_parameters: Annotated[
+        list[AcceptsParameter] | None,
+        Field(
+            description='List of parameters this format accepts in format_id. Template formats define which parameters (dimensions, duration, etc.) can be specified when instantiating the format. Empty or omitted means this is a concrete format with fixed parameters.'
+        ),
+    ] = None
+    renders: Annotated[
+        list[Renders | Renders11] | None,
+        Field(
+            description='Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.',
+            min_length=1,
+        ),
+    ] = None
+    assets: Annotated[
+        list[
+            Assets
+            | Assets187
+            | Assets188
+            | Assets189
+            | Assets190
+            | Assets191
+            | Assets192
+            | Assets193
+            | Assets194
+            | Assets195
+            | Assets196
+            | Assets197
+            | Assets198
+            | Assets199
+            | Assets200
+        ]
+        | None,
+        Field(
+            description="Array of all assets supported for this format. Each asset is identified by its asset_id, which must be used as the key in creative manifests. Use the 'required' boolean on each asset to indicate whether it's mandatory."
+        ),
+    ] = None
+    delivery: Annotated[
+        dict[str, Any] | None,
+        Field(description='Delivery method specifications (e.g., hosted, VAST, third-party tags)'),
+    ] = None
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.'
+        ),
+    ] = None
+    input_format_ids: Annotated[
+        list[InputFormatId] | None,
+        Field(
+            description='Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.'
+        ),
+    ] = None
+    output_format_ids: Annotated[
+        list[OutputFormatId] | None,
+        Field(
+            description='Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).'
+        ),
+    ] = None
+    format_card: Annotated[
+        FormatCard | None,
+        Field(
+            description='Optional standard visual card (300x400px) for displaying this format in user interfaces. Can be rendered via preview_creative or pre-generated.'
+        ),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(
+            description='Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.'
+        ),
+    ] = None
+    supported_disclosure_positions: Annotated[
+        list[SupportedDisclosurePosition] | None,
+        Field(
+            description='Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees — creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.',
+            min_length=1,
+        ),
+    ] = None
+    disclosure_capabilities: Annotated[
+        list[DisclosureCapability] | None,
+        Field(
+            description='Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.',
+            min_length=1,
+        ),
+    ] = None
+    format_card_detailed: Annotated[
+        FormatCardDetailed | None,
+        Field(
+            description='Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.'
+        ),
+    ] = None
+    reported_metrics: Annotated[
+        list[ReportedMetric] | None,
+        Field(
+            description='Metrics this format can produce in delivery reporting. Buyers receive the intersection of format reported_metrics and product available_metrics. If omitted, the format defers entirely to product-level metric declarations.',
+            min_length=1,
+        ),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this format. Used by transformation and generation agents that charge per format adapted, per image generated, or per unit of work. Present when the request included include_pricing=true and account. Ad servers and library-based agents expose pricing on list_creatives instead.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class ListCreativeFormatsResponseCreativeAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    formats: Annotated[
+        list[Format12],
+        Field(
+            description="Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field."
+        ),
+    ]
+    creative_agents: Annotated[
+        list[CreativeAgent] | None,
+        Field(
+            description='Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.'
+        ),
+    ] = None
+    errors: Annotated[
+        list[Error] | None, Field(description='Task-specific errors and warnings')
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/list_creatives_request.py b/src/adcp/types/generated_poc/bundled/creative/list_creatives_request.py
new file mode 100644
index 000000000..f6fd0decd
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/list_creatives_request.py
@@ -0,0 +1,375 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/list_creatives_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+
+class Accounts(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Accounts1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class Status(Enum):
+    processing = 'processing'
+    pending_review = 'pending_review'
+    approved = 'approved'
+    rejected = 'rejected'
+    archived = 'archived'
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    accounts: Annotated[
+        list[Accounts | Accounts1] | None,
+        Field(
+            description='Filter creatives by owning accounts. Useful for agencies managing multiple client accounts.',
+            min_length=1,
+        ),
+    ] = None
+    statuses: Annotated[
+        list[Status] | None, Field(description='Filter by creative approval statuses', min_length=1)
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(description='Filter by creative tags (all tags must match)', min_length=1),
+    ] = None
+    tags_any: Annotated[
+        list[str] | None,
+        Field(description='Filter by creative tags (any tag must match)', min_length=1),
+    ] = None
+    name_contains: Annotated[
+        str | None,
+        Field(description='Filter by creative names containing this text (case-insensitive)'),
+    ] = None
+    creative_ids: Annotated[
+        list[str] | None,
+        Field(description='Filter by specific creative IDs', max_length=100, min_length=1),
+    ] = None
+    created_after: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter creatives created after this date (ISO 8601)'),
+    ] = None
+    created_before: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter creatives created before this date (ISO 8601)'),
+    ] = None
+    updated_after: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter creatives last updated after this date (ISO 8601)'),
+    ] = None
+    updated_before: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter creatives last updated before this date (ISO 8601)'),
+    ] = None
+    assigned_to_packages: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter creatives assigned to any of these packages. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.',
+            min_length=1,
+        ),
+    ] = None
+    media_buy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter creatives assigned to any of these media buys. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.',
+            min_length=1,
+        ),
+    ] = None
+    unassigned: Annotated[
+        bool | None,
+        Field(
+            description='Filter for unassigned creatives when true, assigned creatives when false. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.'
+        ),
+    ] = None
+    has_served: Annotated[
+        bool | None,
+        Field(
+            description='When true, return only creatives that have served at least one impression. When false, return only creatives that have never served.'
+        ),
+    ] = None
+    concept_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter by creative concept IDs. Concepts group related creatives across sizes and formats (e.g., Flashtalking concepts, Celtra campaign folders, CM360 creative groups).',
+            min_length=1,
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Filter by structured format IDs. Returns creatives that match any of these formats.',
+            min_length=1,
+        ),
+    ] = None
+    has_variables: Annotated[
+        bool | None,
+        Field(
+            description='When true, return only creatives with dynamic variables (DCO). When false, return only static creatives.'
+        ),
+    ] = None
+
+
+class Field1(Enum):
+    created_date = 'created_date'
+    updated_date = 'updated_date'
+    name = 'name'
+    status = 'status'
+    assignment_count = 'assignment_count'
+
+
+class Direction(Enum):
+    asc = 'asc'
+    desc = 'desc'
+
+
+class Sort(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    field: Annotated[
+        Field1 | None, Field(description='Field to sort by', title='Creative Sort Field')
+    ] = Field1.created_date
+    direction: Annotated[
+        Direction | None, Field(description='Sort direction', title='Sort Direction')
+    ] = Direction.desc
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class Account(Accounts):
+    pass
+
+
+class Account28(Accounts1):
+    pass
+
+
+class Field5(Enum):
+    creative_id = 'creative_id'
+    name = 'name'
+    format_id = 'format_id'
+    status = 'status'
+    created_date = 'created_date'
+    updated_date = 'updated_date'
+    tags = 'tags'
+    assignments = 'assignments'
+    snapshot = 'snapshot'
+    items = 'items'
+    variables = 'variables'
+    concept = 'concept'
+    pricing_options = 'pricing_options'
+
+
+class ListCreativesRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(
+            description="Filter criteria for querying creatives from a creative library. By default, archived creatives are excluded from results. To include archived creatives, explicitly filter by status='archived' or include 'archived' in the statuses array.",
+            title='Creative Filters',
+        ),
+    ] = None
+    sort: Annotated[Sort | None, Field(description='Sorting parameters')] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    include_assignments: Annotated[
+        bool | None, Field(description='Include package assignment information in response')
+    ] = True
+    include_snapshot: Annotated[
+        bool | None,
+        Field(
+            description='Include a lightweight delivery snapshot per creative (lifetime impressions and last-served date). For detailed performance analytics, use get_creative_delivery.'
+        ),
+    ] = False
+    include_items: Annotated[
+        bool | None,
+        Field(description='Include items for multi-asset formats like carousels and native ads'),
+    ] = False
+    include_variables: Annotated[
+        bool | None,
+        Field(
+            description='Include dynamic content variable definitions (DCO slots) for each creative'
+        ),
+    ] = False
+    include_pricing: Annotated[
+        bool | None,
+        Field(
+            description='Include pricing_options on each creative. Requires account to be provided. When false or omitted, pricing is not computed.'
+        ),
+    ] = False
+    account: Annotated[
+        Account | Account28 | None,
+        Field(
+            description="Account reference for pricing and access. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each creative.",
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    fields: Annotated[
+        list[Field5] | None,
+        Field(
+            description="Specific fields to include in response (omit for all fields). The 'concept' value returns both concept_id and concept_name.",
+            min_length=1,
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/list_creatives_response.py b/src/adcp/types/generated_poc/bundled/creative/list_creatives_response.py
new file mode 100644
index 000000000..9d7260f7e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/list_creatives_response.py
@@ -0,0 +1,4059 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/list_creatives_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel, StringConstraints
+
+
+class Direction(Enum):
+    asc = 'asc'
+    desc = 'desc'
+
+
+class SortApplied(AdCPBaseModel):
+    field: str | None = None
+    direction: Annotated[
+        Direction | None,
+        Field(description='Sort direction for list queries', title='Sort Direction'),
+    ] = None
+
+
+class QuerySummary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    total_matching: Annotated[
+        int,
+        Field(description='Total number of creatives matching filters (across all pages)', ge=0),
+    ]
+    returned: Annotated[
+        int, Field(description='Number of creatives returned in this response', ge=0)
+    ]
+    filters_applied: Annotated[
+        list[str] | None, Field(description='List of filters that were applied to the query')
+    ] = None
+    sort_applied: Annotated[
+        SortApplied | None, Field(description='Sort order that was applied')
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class Status(Enum):
+    active = 'active'
+    pending_approval = 'pending_approval'
+    rejected = 'rejected'
+    payment_required = 'payment_required'
+    suspended = 'suspended'
+    closed = 'closed'
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Billing(Enum):
+    operator = 'operator'
+    agent = 'agent'
+    advertiser = 'advertiser'
+
+
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
+    ]
+    city: Annotated[str, Field(max_length=100)]
+    postal_code: Annotated[str, Field(max_length=20)]
+    region: Annotated[
+        str | None, Field(description='State, province, or region', max_length=100)
+    ] = None
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    ]
+
+
+class Role(Enum):
+    billing = 'billing'
+    legal = 'legal'
+    creative = 'creative'
+    general = 'general'
+
+
+class Contact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    role: Annotated[
+        Role, Field(description="Contact's functional role in the business relationship")
+    ]
+    name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
+        None
+    )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    phone: Annotated[str | None, Field(max_length=30)] = None
+
+
+class Bank(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
+    ] = None
+    bic: Annotated[
+        str | None,
+        Field(
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+        ),
+    ] = None
+    routing_number: Annotated[
+        str | None,
+        Field(
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
+        ),
+    ] = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class BillingEntity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PaymentTerms(Enum):
+    net_15 = 'net_15'
+    net_30 = 'net_30'
+    net_45 = 'net_45'
+    net_60 = 'net_60'
+    net_90 = 'net_90'
+    prepay = 'prepay'
+
+
+class CreditLimit(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
+
+
+class Setup(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where the human can complete the required action (credit application, legal agreement, add funds).'
+        ),
+    ] = None
+    message: Annotated[str, Field(description="Human-readable description of what's needed.")]
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='When this setup link expires.')
+    ] = None
+
+
+class AccountScope(Enum):
+    operator = 'operator'
+    brand = 'brand'
+    operator_brand = 'operator_brand'
+    agent = 'agent'
+
+
+class Category(RootModel[str]):
+    root: Annotated[str, Field(max_length=64, pattern='^[a-z][a-z0-9_]*$')]
+
+
+class GovernanceAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL. Must use HTTPS.')]
+    categories: Annotated[
+        list[Category] | None,
+        Field(
+            description="Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+            max_length=20,
+        ),
+    ] = None
+
+
+class Protocol(Enum):
+    s3 = 's3'
+    gcs = 'gcs'
+    azure_blob = 'azure_blob'
+
+
+class Format(Enum):
+    jsonl = 'jsonl'
+    csv = 'csv'
+    parquet = 'parquet'
+    avro = 'avro'
+    orc = 'orc'
+
+
+class Compression(Enum):
+    gzip = 'gzip'
+    none = 'none'
+
+
+class ReportingBucket(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    protocol: Annotated[
+        Protocol, Field(description='Cloud storage protocol', title='Cloud Storage Protocol')
+    ]
+    bucket: Annotated[
+        str,
+        Field(
+            description='Bucket or container name',
+            max_length=63,
+            min_length=3,
+            pattern='^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$',
+        ),
+    ]
+    prefix: Annotated[
+        str | None,
+        Field(
+            description='Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.',
+            examples=['accounts/pinnacle/adcp', 'reporting/2024'],
+            max_length=512,
+            pattern='^[a-zA-Z0-9/_.-]+$',
+        ),
+    ] = None
+    region: Annotated[
+        str | None,
+        Field(
+            description='Cloud region for the bucket',
+            examples=['us-east-1', 'europe-west1'],
+            max_length=64,
+            pattern='^[a-z0-9-]+$',
+        ),
+    ] = None
+    format: Annotated[
+        Format | None,
+        Field(
+            description='File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).'
+        ),
+    ] = Format.jsonl
+    compression: Annotated[
+        Compression | None, Field(description='Compression applied to delivered files')
+    ] = Compression.gzip
+    file_retention_days: Annotated[
+        int,
+        Field(
+            description='How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.',
+            examples=[14, 30, 90],
+            ge=1,
+        ),
+    ]
+    setup_instructions: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation — buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery.'
+        ),
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    account_id: Annotated[str, Field(description='Unique identifier for this account')]
+    name: Annotated[
+        str, Field(description="Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')")
+    ]
+    advertiser: Annotated[
+        str | None, Field(description='The advertiser whose rates apply to this account')
+    ] = None
+    billing_proxy: Annotated[
+        str | None,
+        Field(
+            description='Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)'
+        ),
+    ] = None
+    status: Annotated[
+        Status,
+        Field(
+            description='Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.',
+            title='Account Status',
+        ),
+    ]
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    operator: Annotated[
+        str | None,
+        Field(
+            description="Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ] = None
+    billing: Annotated[
+        Billing | None,
+        Field(
+            description="Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+        ),
+    ] = None
+    billing_entity: Annotated[
+        BillingEntity | None,
+        Field(
+            description='Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).',
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    rate_card: Annotated[
+        str | None, Field(description='Identifier for the rate card applied to this account')
+    ] = None
+    payment_terms: Annotated[
+        PaymentTerms | None,
+        Field(
+            description='Payment terms agreed for this account. Binding for all invoices when the account is active.'
+        ),
+    ] = None
+    credit_limit: Annotated[
+        CreditLimit | None, Field(description='Maximum outstanding balance allowed')
+    ] = None
+    setup: Annotated[
+        Setup | None,
+        Field(
+            description="Present when status is 'pending_approval'. Contains next steps for completing account activation."
+        ),
+    ] = None
+    account_scope: Annotated[
+        AccountScope | None,
+        Field(
+            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+        ),
+    ] = None
+    governance_agents: Annotated[
+        list[GovernanceAgent] | None,
+        Field(
+            description='Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses — use sync_governance to set or update credentials.',
+            max_length=10,
+        ),
+    ] = None
+    reporting_bucket: Annotated[
+        ReportingBucket | None,
+        Field(
+            description="Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix — bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities)."
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, this is a sandbox account — no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Status22(Enum):
+    processing = 'processing'
+    pending_review = 'pending_review'
+    approved = 'approved'
+    rejected = 'rejected'
+    archived = 'archived'
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role153(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role153, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy125(DeclaredBy):
+    pass
+
+
+class RenderGuidance125(RenderGuidance):
+    pass
+
+
+class Jurisdiction132(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance125 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure126(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction132] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem125(VerificationItem):
+    pass
+
+
+class Provenance126(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy125 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure126 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem125] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets214(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance126 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy126(DeclaredBy):
+    pass
+
+
+class RenderGuidance126(RenderGuidance):
+    pass
+
+
+class Jurisdiction133(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance126 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure127(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction133] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem126(VerificationItem):
+    pass
+
+
+class Provenance127(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy126 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure127 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem126] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets215(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance127 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy127(DeclaredBy):
+    pass
+
+
+class RenderGuidance127(RenderGuidance):
+    pass
+
+
+class Jurisdiction134(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance127 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure128(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction134] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem127(VerificationItem):
+    pass
+
+
+class Provenance128(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy127 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure128 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem127] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets216(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance128 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy128(DeclaredBy):
+    pass
+
+
+class RenderGuidance128(RenderGuidance):
+    pass
+
+
+class Jurisdiction135(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance128 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure129(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction135] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem128(VerificationItem):
+    pass
+
+
+class Provenance129(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy128 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure129 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem128] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets217(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance129 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy129(DeclaredBy):
+    pass
+
+
+class RenderGuidance129(RenderGuidance):
+    pass
+
+
+class Jurisdiction136(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance129 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure130(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction136] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem129(VerificationItem):
+    pass
+
+
+class Provenance130(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy129 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure130 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem129] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets218(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance130 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy130(DeclaredBy):
+    pass
+
+
+class RenderGuidance130(RenderGuidance):
+    pass
+
+
+class Jurisdiction137(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance130 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure131(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction137] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem130(VerificationItem):
+    pass
+
+
+class Provenance131(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy130 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure131 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem130] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets219(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance131 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy131(DeclaredBy):
+    pass
+
+
+class RenderGuidance131(RenderGuidance):
+    pass
+
+
+class Jurisdiction138(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance131 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure132(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction138] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem131(VerificationItem):
+    pass
+
+
+class Provenance132(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy131 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure132 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem131] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets220(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance132 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy132(DeclaredBy):
+    pass
+
+
+class RenderGuidance132(RenderGuidance):
+    pass
+
+
+class Jurisdiction139(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance132 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure133(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction139] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem132(VerificationItem):
+    pass
+
+
+class Provenance133(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy132 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure133 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem132] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets221(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance133 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method22(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method22, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy133(DeclaredBy):
+    pass
+
+
+class RenderGuidance133(RenderGuidance):
+    pass
+
+
+class Jurisdiction140(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance133 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure134(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction140] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem133(VerificationItem):
+    pass
+
+
+class Provenance134(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy133 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure134 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem133] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets222(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance134 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy134(DeclaredBy):
+    pass
+
+
+class RenderGuidance134(RenderGuidance):
+    pass
+
+
+class Jurisdiction141(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance134 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure135(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction141] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem134(VerificationItem):
+    pass
+
+
+class Provenance135(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy134 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure135 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem134] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets223(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance135 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent26(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy135(DeclaredBy):
+    pass
+
+
+class RenderGuidance135(RenderGuidance):
+    pass
+
+
+class Jurisdiction142(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance135 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure136(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction142] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem135(VerificationItem):
+    pass
+
+
+class Provenance136(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy135 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure136 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem135] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets224(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent26] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance136 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy136(DeclaredBy):
+    pass
+
+
+class RenderGuidance136(RenderGuidance):
+    pass
+
+
+class Jurisdiction143(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance136 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure137(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction143] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem136(VerificationItem):
+    pass
+
+
+class Provenance137(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy136 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure137 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem136] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets225(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent26] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance137 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets226(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role166(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role166,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction144(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction144] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets227(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets228(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class VariableType(Enum):
+    text = 'text'
+    image = 'image'
+    video = 'video'
+    audio = 'audio'
+    url = 'url'
+    number = 'number'
+    boolean = 'boolean'
+    color = 'color'
+    date = 'date'
+
+
+class Variable(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    variable_id: Annotated[str, Field(description='Variable identifier on the creative platform')]
+    name: Annotated[str, Field(description='Human-readable variable name')]
+    variable_type: Annotated[
+        VariableType,
+        Field(
+            description='Data type of the variable. Each type represents a semantic content slot: text (headlines, body copy), image/video/audio (media URLs), url (clickthrough or tracking URLs), number (prices, counts), boolean (conditional flags like show_discount or is_raining), color (hex color values), date (ISO 8601 date-time for countdowns and offer expirations).'
+        ),
+    ]
+    default_value: Annotated[
+        str | None,
+        Field(
+            description='Default value used when no dynamic value is provided at serve time. All types are string-encoded: text/image/video/audio/url as literal strings, number as decimal (e.g., "42.99"), boolean as "true"/"false", color as "#RRGGBB", date as ISO 8601 (e.g., "2026-12-25T00:00:00Z").'
+        ),
+    ] = None
+    required: Annotated[
+        bool | None,
+        Field(description='Whether this variable must have a value for the creative to serve'),
+    ] = False
+
+
+class AssignedPackage(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    package_id: Annotated[str, Field(description='Package identifier')]
+    assigned_date: Annotated[AwareDatetime, Field(description='When this assignment was created')]
+
+
+class Assignments(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    assignment_count: Annotated[
+        int, Field(description='Total number of active package assignments', ge=0)
+    ]
+    assigned_packages: Annotated[
+        list[AssignedPackage] | None,
+        Field(description='List of packages this creative is assigned to'),
+    ] = None
+
+
+class Snapshot(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    as_of: Annotated[
+        AwareDatetime, Field(description='When this snapshot was captured by the platform')
+    ]
+    staleness_seconds: Annotated[
+        int,
+        Field(
+            description='Maximum age of this data in seconds. For example, 3600 means the data may be up to 1 hour old.',
+            ge=0,
+        ),
+    ]
+    impressions: Annotated[
+        int,
+        Field(
+            description='Lifetime impressions across all assignments. Not scoped to any date range.',
+            ge=0,
+        ),
+    ]
+    last_served: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Last time this creative served an impression. Absent when the creative has never served.'
+        ),
+    ] = None
+
+
+class SnapshotUnavailableReason(Enum):
+    SNAPSHOT_UNSUPPORTED = 'SNAPSHOT_UNSUPPORTED'
+    SNAPSHOT_TEMPORARILY_UNAVAILABLE = 'SNAPSHOT_TEMPORARILY_UNAVAILABLE'
+    SNAPSHOT_PERMISSION_DENIED = 'SNAPSHOT_PERMISSION_DENIED'
+
+
+class Items(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    asset_kind: Annotated[
+        Literal['media'],
+        Field(description='Discriminator indicating this is a media asset with content_uri'),
+    ]
+    asset_type: Annotated[
+        str,
+        Field(
+            description='Type of asset. Common types: thumbnail_image, product_image, featured_image, logo'
+        ),
+    ]
+    asset_id: Annotated[
+        str, Field(description='Unique identifier for the asset within the creative')
+    ]
+    content_uri: Annotated[AnyUrl, Field(description='URL for media assets (images, videos, etc.)')]
+
+
+class Items1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    asset_kind: Annotated[
+        Literal['text'],
+        Field(description='Discriminator indicating this is a text asset with content'),
+    ]
+    asset_type: Annotated[
+        str,
+        Field(
+            description='Type of asset. Common types: headline, body_text, cta_text, price_text, sponsor_name, author_name, click_url'
+        ),
+    ]
+    asset_id: Annotated[
+        str, Field(description='Unique identifier for the asset within the creative')
+    ]
+    content: Annotated[
+        str | list[str],
+        Field(
+            description='Text content for text-based assets like headlines, body text, CTA text, etc.'
+        ),
+    ]
+
+
+class PricingOption161(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption162(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption163(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption164(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption165(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption166(PricingOption161, PricingOption165):
+    pass
+
+
+class PricingOption167(PricingOption162, PricingOption165):
+    pass
+
+
+class PricingOption168(PricingOption163, PricingOption165):
+    pass
+
+
+class PricingOption169(PricingOption164, PricingOption165):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption166 | PricingOption167 | PricingOption168 | PricingOption169]
+):
+    root: Annotated[
+        PricingOption166 | PricingOption167 | PricingOption168 | PricingOption169,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    account: Annotated[
+        Account | None,
+        Field(
+            description='Account that owns this creative',
+            examples=[
+                {
+                    'description': 'Direct advertiser account',
+                    'data': {
+                        'account_id': 'acc_acme_direct',
+                        'name': 'Acme',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'acme-corp.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Advertiser account with agency billing proxy',
+                    'data': {
+                        'account_id': 'acc_acme_pinnacle',
+                        'name': 'Acme c/o Pinnacle',
+                        'advertiser': 'Acme Corp',
+                        'billing_proxy': 'Pinnacle Media',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator_brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_60',
+                    },
+                },
+                {
+                    'description': 'Agency as direct buyer',
+                    'data': {
+                        'account_id': 'acc_pinnacle',
+                        'name': 'Pinnacle',
+                        'advertiser': 'Pinnacle Media',
+                        'brand': {'domain': 'pinnacle-media.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator',
+                        'rate_card': 'agency_standard',
+                        'payment_terms': 'net_45',
+                    },
+                },
+                {
+                    'description': 'Account with brand identity and operator (via sync_accounts)',
+                    'data': {
+                        'account_id': 'acc_spark_001',
+                        'name': 'Spark (via Pinnacle)',
+                        'advertiser': 'Nova Brands',
+                        'status': 'active',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'agent',
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Pending account awaiting seller approval',
+                    'data': {
+                        'account_id': 'acc_glow_pending',
+                        'name': 'Glow',
+                        'advertiser': 'Nova Brands',
+                        'status': 'pending_approval',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                    },
+                },
+                {
+                    'description': 'Agency operates but advertiser is billed directly with structured billing entity',
+                    'data': {
+                        'account_id': 'acc_acme_direct_bill',
+                        'name': 'Acme (billed direct)',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'advertiser',
+                        'billing_entity': {
+                            'legal_name': 'Acme Corporation GmbH',
+                            'vat_id': 'DE987654321',
+                            'address': {
+                                'street': 'Hauptstrasse 42',
+                                'city': 'Munich',
+                                'postal_code': '80331',
+                                'country': 'DE',
+                            },
+                            'contacts': [
+                                {
+                                    'role': 'billing',
+                                    'name': 'AP Department',
+                                    'email': 'billing@acme-corp.com',
+                                }
+                            ],
+                        },
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+            ],
+            title='Account',
+        ),
+    ] = None
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Format identifier specifying which format this creative conforms to',
+            title='Format ID',
+        ),
+    ]
+    status: Annotated[
+        Status22,
+        Field(description='Current approval status of the creative', title='Creative Status'),
+    ]
+    created_date: Annotated[AwareDatetime, Field(description='When the creative was created')]
+    updated_date: Annotated[AwareDatetime, Field(description='When the creative was last modified')]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets214
+            | Assets215
+            | Assets216
+            | Assets217
+            | Assets218
+            | Assets219
+            | Assets220
+            | Assets221
+            | Assets222
+            | Assets223
+            | Assets224
+            | Assets225
+            | Assets226
+            | Assets227
+            | Assets228,
+        ]
+        | None,
+        Field(description='Assets for this creative, keyed by asset_id'),
+    ] = None
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
+    ] = None
+    concept_id: Annotated[
+        str | None,
+        Field(
+            description='Creative concept this creative belongs to. Concepts group related creatives across sizes and formats.'
+        ),
+    ] = None
+    concept_name: Annotated[str | None, Field(description='Human-readable concept name')] = None
+    variables: Annotated[
+        list[Variable] | None,
+        Field(
+            description='Dynamic content variables (DCO slots) for this creative. Included when include_variables=true.'
+        ),
+    ] = None
+    assignments: Annotated[
+        Assignments | None,
+        Field(description='Current package assignments (included when include_assignments=true)'),
+    ] = None
+    snapshot: Annotated[
+        Snapshot | None,
+        Field(
+            description='Lightweight delivery snapshot (included when include_snapshot=true). For detailed performance analytics, use get_creative_delivery.'
+        ),
+    ] = None
+    snapshot_unavailable_reason: Annotated[
+        SnapshotUnavailableReason | None,
+        Field(
+            description='Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot data is unavailable for this creative.'
+        ),
+    ] = None
+    items: Annotated[
+        list[Items | Items1] | None,
+        Field(
+            description='Items for multi-asset formats like carousels and native ads (included when include_items=true)'
+        ),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for using this creative (serving, delivery). Used by ad servers and library agents. Transformation agents expose format-level pricing on list_creative_formats instead. Present when include_pricing=true and account provided. The buyer passes the applied pricing_option_id in report_usage.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class StatusSummary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    processing: Annotated[
+        int | None, Field(description='Number of creatives being processed', ge=0)
+    ] = None
+    approved: Annotated[int | None, Field(description='Number of approved creatives', ge=0)] = None
+    pending_review: Annotated[
+        int | None, Field(description='Number of creatives pending review', ge=0)
+    ] = None
+    rejected: Annotated[int | None, Field(description='Number of rejected creatives', ge=0)] = None
+    archived: Annotated[int | None, Field(description='Number of archived creatives', ge=0)] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class ListCreativesResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    query_summary: Annotated[
+        QuerySummary, Field(description='Summary of the query that was executed')
+    ]
+    pagination: Annotated[
+        Pagination,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ]
+    creatives: Annotated[
+        list[Creative], Field(description='Array of creative assets matching the query')
+    ]
+    format_summary: Annotated[
+        dict[Annotated[str, StringConstraints(pattern=r'^[a-zA-Z0-9_-]+$')], int] | None,
+        Field(
+            description="Breakdown of creatives by format. Keys are agent-defined format identifiers, optionally including dimensions (e.g., 'display_static_300x250', 'video_30s_vast'). Key construction is platform-specific — there is no required format."
+        ),
+    ] = None
+    status_summary: Annotated[
+        StatusSummary | None, Field(description='Breakdown of creatives by status')
+    ] = None
+    errors: Annotated[
+        list[Error] | None,
+        Field(description='Task-specific errors (e.g., invalid filters, account not found)'),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/preview_creative_request.py b/src/adcp/types/generated_poc/bundled/creative/preview_creative_request.py
new file mode 100644
index 000000000..b3fb87c52
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/preview_creative_request.py
@@ -0,0 +1,5945 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/preview_creative_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class RequestType(Enum):
+    single = 'single'
+    batch = 'batch'
+    variant = 'variant'
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy152(DeclaredBy):
+    pass
+
+
+class RenderGuidance152(RenderGuidance):
+    pass
+
+
+class Jurisdiction161(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance152 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure153(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction161] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem152(VerificationItem):
+    pass
+
+
+class Provenance153(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy152 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure153 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem152] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets246(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance153 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy153(DeclaredBy):
+    pass
+
+
+class RenderGuidance153(RenderGuidance):
+    pass
+
+
+class Jurisdiction162(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance153 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure154(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction162] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem153(VerificationItem):
+    pass
+
+
+class Provenance154(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy153 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure154 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem153] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets247(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance154 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy154(DeclaredBy):
+    pass
+
+
+class RenderGuidance154(RenderGuidance):
+    pass
+
+
+class Jurisdiction163(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance154 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure155(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction163] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem154(VerificationItem):
+    pass
+
+
+class Provenance155(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy154 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure155 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem154] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets248(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance155 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy155(DeclaredBy):
+    pass
+
+
+class RenderGuidance155(RenderGuidance):
+    pass
+
+
+class Jurisdiction164(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance155 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure156(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction164] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem155(VerificationItem):
+    pass
+
+
+class Provenance156(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy155 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure156 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem155] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets249(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance156 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy156(DeclaredBy):
+    pass
+
+
+class RenderGuidance156(RenderGuidance):
+    pass
+
+
+class Jurisdiction165(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance156 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure157(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction165] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem156(VerificationItem):
+    pass
+
+
+class Provenance157(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy156 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure157 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem156] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets250(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance157 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy157(DeclaredBy):
+    pass
+
+
+class RenderGuidance157(RenderGuidance):
+    pass
+
+
+class Jurisdiction166(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance157 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure158(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction166] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem157(VerificationItem):
+    pass
+
+
+class Provenance158(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy157 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure158 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem157] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets251(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance158 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy158(DeclaredBy):
+    pass
+
+
+class RenderGuidance158(RenderGuidance):
+    pass
+
+
+class Jurisdiction167(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance158 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure159(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction167] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem158(VerificationItem):
+    pass
+
+
+class Provenance159(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy158 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure159 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem158] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets252(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance159 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy159(DeclaredBy):
+    pass
+
+
+class RenderGuidance159(RenderGuidance):
+    pass
+
+
+class Jurisdiction168(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance159 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure160(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction168] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem159(VerificationItem):
+    pass
+
+
+class Provenance160(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy159 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure160 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem159] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets253(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance160 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method26(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method26, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy160(DeclaredBy):
+    pass
+
+
+class RenderGuidance160(RenderGuidance):
+    pass
+
+
+class Jurisdiction169(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance160 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure161(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction169] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem160(VerificationItem):
+    pass
+
+
+class Provenance161(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy160 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure161 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem160] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets254(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance161 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy161(DeclaredBy):
+    pass
+
+
+class RenderGuidance161(RenderGuidance):
+    pass
+
+
+class Jurisdiction170(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance161 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure162(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction170] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem161(VerificationItem):
+    pass
+
+
+class Provenance162(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy161 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure162 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem161] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets255(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance162 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent34(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy162(DeclaredBy):
+    pass
+
+
+class RenderGuidance162(RenderGuidance):
+    pass
+
+
+class Jurisdiction171(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance162 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure163(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction171] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem162(VerificationItem):
+    pass
+
+
+class Provenance163(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy162 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure163 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem162] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets256(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent34] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance163 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy163(DeclaredBy):
+    pass
+
+
+class RenderGuidance163(RenderGuidance):
+    pass
+
+
+class Jurisdiction172(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance163 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure164(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction172] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem163(VerificationItem):
+    pass
+
+
+class Provenance164(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy163 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure164 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem163] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets257(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent34] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance164 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets258(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role195(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role195,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction173(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction173] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets259(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets260(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class RightsAgent(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+    id: Annotated[str, Field(description='Agent identifier')]
+
+
+class Use(Enum):
+    likeness = 'likeness'
+    voice = 'voice'
+    name = 'name'
+    endorsement = 'endorsement'
+    motion_capture = 'motion_capture'
+    signature = 'signature'
+    catchphrase = 'catchphrase'
+    sync = 'sync'
+    background_music = 'background_music'
+    editorial = 'editorial'
+    commercial = 'commercial'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ExcludedCountry(Country):
+    pass
+
+
+class RightType(Enum):
+    talent = 'talent'
+    character = 'character'
+    brand_ip = 'brand_ip'
+    music = 'music'
+    stock_media = 'stock_media'
+
+
+class ApprovalStatus(Enum):
+    pending = 'pending'
+    approved = 'approved'
+    rejected = 'rejected'
+
+
+class Right(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from the acquire_rights response')
+    ]
+    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
+    valid_from: Annotated[
+        AwareDatetime | None, Field(description='Start of the rights validity period')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='End of the rights validity period. Creative should not be served after this time.'
+        ),
+    ] = None
+    uses: Annotated[
+        list[Use], Field(description='Rights uses covered by this constraint', min_length=1)
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.'
+        ),
+    ] = None
+    excluded_countries: Annotated[
+        list[ExcludedCountry] | None,
+        Field(
+            description='Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.'
+        ),
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(
+            description='Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.',
+            ge=1,
+        ),
+    ] = None
+    right_type: Annotated[
+        RightType | None,
+        Field(
+            description='Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.',
+            title='Right Type',
+        ),
+    ] = None
+    approval_status: Annotated[
+        ApprovalStatus | None,
+        Field(
+            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
+        ),
+    ] = None
+    verification_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Type65(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type65,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy164(DeclaredBy):
+    pass
+
+
+class RenderGuidance164(RenderGuidance):
+    pass
+
+
+class Jurisdiction174(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance164 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure165(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction174] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem164(VerificationItem):
+    pass
+
+
+class Provenance165(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy164 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure165 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem164] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class CreativeManifest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets246
+            | Assets247
+            | Assets248
+            | Assets249
+            | Assets250
+            | Assets251
+            | Assets252
+            | Assets253
+            | Assets254
+            | Assets255
+            | Assets256
+            | Assets257
+            | Assets258
+            | Assets259
+            | Assets260,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance165 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Input(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad', 'Desktop dark mode')"
+        ),
+    ]
+    macros: Annotated[
+        dict[str, str] | None,
+        Field(
+            description="Macro values to use for this preview. Supports all universal macros from the format's supported_macros list."
+        ),
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(
+            description="Natural language description of the context for AI-generated content (e.g., 'User just searched for running shoes', 'Podcast discussing weather patterns')"
+        ),
+    ] = None
+
+
+class Quality(Enum):
+    draft = 'draft'
+    production = 'production'
+
+
+class OutputFormat(Enum):
+    url = 'url'
+    html = 'html'
+
+
+class DeclaredBy165(DeclaredBy):
+    pass
+
+
+class RenderGuidance165(RenderGuidance):
+    pass
+
+
+class Jurisdiction175(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance165 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure166(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction175] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem165(VerificationItem):
+    pass
+
+
+class Provenance166(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy165 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure166 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem165] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets261(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance166 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy166(DeclaredBy):
+    pass
+
+
+class RenderGuidance166(RenderGuidance):
+    pass
+
+
+class Jurisdiction176(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance166 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure167(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction176] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem166(VerificationItem):
+    pass
+
+
+class Provenance167(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy166 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure167 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem166] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets262(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance167 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy167(DeclaredBy):
+    pass
+
+
+class RenderGuidance167(RenderGuidance):
+    pass
+
+
+class Jurisdiction177(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance167 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure168(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction177] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem167(VerificationItem):
+    pass
+
+
+class Provenance168(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy167 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure168 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem167] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets263(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance168 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy168(DeclaredBy):
+    pass
+
+
+class RenderGuidance168(RenderGuidance):
+    pass
+
+
+class Jurisdiction178(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance168 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure169(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction178] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem168(VerificationItem):
+    pass
+
+
+class Provenance169(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy168 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure169 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem168] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets264(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance169 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy169(DeclaredBy):
+    pass
+
+
+class RenderGuidance169(RenderGuidance):
+    pass
+
+
+class Jurisdiction179(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance169 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure170(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction179] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem169(VerificationItem):
+    pass
+
+
+class Provenance170(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy169 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure170 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem169] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets265(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance170 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy170(DeclaredBy):
+    pass
+
+
+class RenderGuidance170(RenderGuidance):
+    pass
+
+
+class Jurisdiction180(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance170 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure171(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction180] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem170(VerificationItem):
+    pass
+
+
+class Provenance171(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy170 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure171 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem170] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets266(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance171 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy171(DeclaredBy):
+    pass
+
+
+class RenderGuidance171(RenderGuidance):
+    pass
+
+
+class Jurisdiction181(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance171 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure172(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction181] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem171(VerificationItem):
+    pass
+
+
+class Provenance172(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy171 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure172 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem171] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets267(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance172 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy172(DeclaredBy):
+    pass
+
+
+class RenderGuidance172(RenderGuidance):
+    pass
+
+
+class Jurisdiction182(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance172 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure173(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction182] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem172(VerificationItem):
+    pass
+
+
+class Provenance173(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy172 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure173 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem172] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets268(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance173 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy173(DeclaredBy):
+    pass
+
+
+class RenderGuidance173(RenderGuidance):
+    pass
+
+
+class Jurisdiction183(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance173 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure174(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction183] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem173(VerificationItem):
+    pass
+
+
+class Provenance174(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy173 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure174 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem173] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets269(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance174 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Security9(Security):
+    pass
+
+
+class DeclaredBy174(DeclaredBy):
+    pass
+
+
+class RenderGuidance174(RenderGuidance):
+    pass
+
+
+class Jurisdiction184(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance174 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure175(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction184] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem174(VerificationItem):
+    pass
+
+
+class Provenance175(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy174 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure175 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem174] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets270(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security9, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance175 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy175(DeclaredBy):
+    pass
+
+
+class RenderGuidance175(RenderGuidance):
+    pass
+
+
+class Jurisdiction185(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance175 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure176(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction185] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem175(VerificationItem):
+    pass
+
+
+class Provenance176(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy175 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure176 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem175] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets271(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance176 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy176(DeclaredBy):
+    pass
+
+
+class RenderGuidance176(RenderGuidance):
+    pass
+
+
+class Jurisdiction186(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance176 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure177(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction186] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem176(VerificationItem):
+    pass
+
+
+class Provenance177(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy176 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure177 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem176] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets272(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent34] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance177 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy177(DeclaredBy):
+    pass
+
+
+class RenderGuidance177(RenderGuidance):
+    pass
+
+
+class Jurisdiction187(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance177 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure178(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction187] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem177(VerificationItem):
+    pass
+
+
+class Provenance178(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy177 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure178 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem177] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets273(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent34] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance178 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets274(Assets258):
+    pass
+
+
+class ReferenceAsset9(ReferenceAsset):
+    pass
+
+
+class Jurisdiction188(Jurisdiction173):
+    pass
+
+
+class RequiredDisclosure10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction188] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure10] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets275(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset9] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance10 | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class FeedFieldMapping13(FeedFieldMapping):
+    pass
+
+
+class Assets276(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping13] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Right7(Right):
+    pass
+
+
+class IndustryIdentifier8(IndustryIdentifier):
+    pass
+
+
+class DeclaredBy178(DeclaredBy):
+    pass
+
+
+class RenderGuidance178(RenderGuidance):
+    pass
+
+
+class Jurisdiction189(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance178 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure179(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction189] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem178(VerificationItem):
+    pass
+
+
+class Provenance179(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy178 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure179 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem178] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class CreativeManifest6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets261
+            | Assets262
+            | Assets263
+            | Assets264
+            | Assets265
+            | Assets266
+            | Assets267
+            | Assets268
+            | Assets269
+            | Assets270
+            | Assets271
+            | Assets272
+            | Assets273
+            | Assets274
+            | Assets275
+            | Assets276,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right7] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier8] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance179 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Input10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this input set')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to use for this preview')
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(description='Natural language description of the context for AI-generated content'),
+    ] = None
+
+
+class Request(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Format identifier for rendering the preview. Defaults to creative_manifest.format_id if omitted.',
+            title='Format ID',
+        ),
+    ] = None
+    creative_manifest: Annotated[
+        CreativeManifest6,
+        Field(
+            description='Complete creative manifest with all required assets.',
+            title='Creative Manifest',
+        ),
+    ]
+    inputs: Annotated[
+        list[Input10] | None,
+        Field(
+            description='Array of input sets for generating multiple preview variants', min_length=1
+        ),
+    ] = None
+    template_id: Annotated[
+        str | None, Field(description='Specific template ID for custom format rendering')
+    ] = None
+    quality: Annotated[
+        Quality | None,
+        Field(
+            description='Render quality for this preview. Overrides batch-level default.',
+            title='Creative Quality',
+        ),
+    ] = None
+    output_format: Annotated[
+        OutputFormat | None,
+        Field(
+            description='Output format for this preview. Overrides batch-level default.',
+            title='Preview Output Format',
+        ),
+    ] = OutputFormat.url
+    item_limit: Annotated[
+        int | None,
+        Field(description='Maximum number of catalog items to render in this preview.', ge=1),
+    ] = None
+
+
+class PreviewCreativeRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    request_type: Annotated[
+        RequestType,
+        Field(
+            description="Preview mode. 'single' previews one creative manifest. 'batch' previews multiple creatives in one call. 'variant' replays a post-flight variant by ID."
+        ),
+    ]
+    creative_manifest: Annotated[
+        CreativeManifest | None,
+        Field(
+            description="Complete creative manifest with all required assets for the format. Required when request_type is 'single'. Also accepted per item in batch mode.",
+            title='Creative Manifest',
+        ),
+    ] = None
+    format_id: Annotated[
+        FormatId | None,
+        Field(
+            description='Format identifier for rendering the preview. Defaults to creative_manifest.format_id if omitted. Used in single mode.',
+            title='Format ID',
+        ),
+    ] = None
+    inputs: Annotated[
+        list[Input] | None,
+        Field(
+            description='Array of input sets for generating multiple preview variants. Each input set defines macros and context values for one preview rendering. Used in single mode.',
+            min_length=1,
+        ),
+    ] = None
+    template_id: Annotated[
+        str | None,
+        Field(description='Specific template ID for custom format rendering. Used in single mode.'),
+    ] = None
+    quality: Annotated[
+        Quality | None,
+        Field(
+            description="Render quality. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. In batch mode, sets the default for all requests (individual items can override).",
+            title='Creative Quality',
+        ),
+    ] = None
+    output_format: Annotated[
+        OutputFormat | None,
+        Field(
+            description="Output format. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). In batch mode, sets the default for all requests (individual items can override). Default: 'url'.",
+            title='Preview Output Format',
+        ),
+    ] = OutputFormat.url
+    item_limit: Annotated[
+        int | None,
+        Field(
+            description='Maximum number of catalog items to render per preview variant. Used in single mode. Creative agents SHOULD default to a reasonable sample when omitted and the catalog is large.',
+            ge=1,
+        ),
+    ] = None
+    requests: Annotated[
+        list[Request] | None,
+        Field(
+            description="Array of preview requests (1-50 items). Required when request_type is 'batch'. Each item follows the single request structure.",
+            max_length=50,
+            min_length=1,
+        ),
+    ] = None
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Platform-assigned variant identifier from get_creative_delivery response. Required when request_type is 'variant'."
+        ),
+    ] = None
+    creative_id: Annotated[
+        str | None, Field(description='Creative identifier for context. Used in variant mode.')
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/preview_creative_response.py b/src/adcp/types/generated_poc/bundled/creative/preview_creative_response.py
new file mode 100644
index 000000000..83ca4fe23
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/preview_creative_response.py
@@ -0,0 +1,3706 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/preview_creative_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class Dimensions(AdCPBaseModel):
+    width: Annotated[float, Field(ge=0.0)]
+    height: Annotated[float, Field(ge=0.0)]
+
+
+class Embedding(AdCPBaseModel):
+    recommended_sandbox: Annotated[
+        str | None,
+        Field(
+            description="Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+        ),
+    ] = None
+    requires_https: Annotated[
+        bool | None, Field(description='Whether this output requires HTTPS for secure embedding')
+    ] = None
+    supports_fullscreen: Annotated[
+        bool | None, Field(description='Whether this output supports fullscreen mode')
+    ] = None
+    csp_policy: Annotated[
+        str | None, Field(description='Content Security Policy requirements for embedding')
+    ] = None
+
+
+class Renders(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
+    output_format: Annotated[
+        Literal['url'], Field(description='Discriminator indicating preview_url is provided')
+    ]
+    preview_url: Annotated[
+        AnyUrl,
+        Field(
+            description='URL to an HTML page that renders this piece. Can be embedded in an iframe.'
+        ),
+    ]
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None,
+        Field(description='Optional security and embedding metadata for safe iframe integration'),
+    ] = None
+
+
+class Renders13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
+    output_format: Annotated[
+        Literal['html'], Field(description='Discriminator indicating preview_html is provided')
+    ]
+    preview_html: Annotated[
+        str,
+        Field(
+            description='Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.'
+        ),
+    ]
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None, Field(description='Optional security and embedding metadata')
+    ] = None
+
+
+class Renders14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
+    output_format: Annotated[
+        Literal['both'],
+        Field(
+            description='Discriminator indicating both preview_url and preview_html are provided'
+        ),
+    ]
+    preview_url: Annotated[
+        AnyUrl,
+        Field(
+            description='URL to an HTML page that renders this piece. Can be embedded in an iframe.'
+        ),
+    ]
+    preview_html: Annotated[
+        str,
+        Field(
+            description='Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.'
+        ),
+    ]
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None,
+        Field(description='Optional security and embedding metadata for safe iframe integration'),
+    ] = None
+
+
+class Input(AdCPBaseModel):
+    name: Annotated[str, Field(description='Human-readable name for this variant')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values applied to this variant')
+    ] = None
+    context_description: Annotated[
+        str | None, Field(description='Context description applied to this variant')
+    ] = None
+
+
+class Preview(AdCPBaseModel):
+    preview_id: Annotated[str, Field(description='Unique identifier for this preview variant')]
+    renders: Annotated[
+        list[Renders | Renders13 | Renders14],
+        Field(
+            description='Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats (video + banner), multi-placement formats, and adaptive formats render as multiple pieces.',
+            min_length=1,
+        ),
+    ]
+    input: Annotated[
+        Input,
+        Field(
+            description='The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.'
+        ),
+    ]
+
+
+class PreviewCreativeResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    response_type: Annotated[
+        Literal['single'],
+        Field(description='Discriminator indicating this is a single preview response'),
+    ]
+    previews: Annotated[
+        list[Preview],
+        Field(
+            description='Array of preview variants. Each preview corresponds to an input set from the request. If no inputs were provided, returns a single default preview.',
+            min_length=1,
+        ),
+    ]
+    interactive_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL to an interactive testing page that shows all preview variants with controls to switch between them, modify macro values, and test different scenarios.'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when preview links expire')
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Renders15(Renders):
+    pass
+
+
+class Renders16(Renders13):
+    pass
+
+
+class Renders17(Renders14):
+    pass
+
+
+class Input15(AdCPBaseModel):
+    name: str
+    macros: dict[str, str] | None = None
+    context_description: str | None = None
+
+
+class Preview13(AdCPBaseModel):
+    preview_id: str
+    renders: Annotated[list[Renders15 | Renders16 | Renders17], Field(min_length=1)]
+    input: Input15
+
+
+class Response(AdCPBaseModel):
+    previews: Annotated[
+        list[Preview13],
+        Field(description='Array of preview variants for this creative', min_length=1),
+    ]
+    interactive_url: AnyUrl | None = None
+    expires_at: Annotated[AwareDatetime, Field(description='When the preview URLs expire')]
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Results(AdCPBaseModel):
+    success: Annotated[Literal[True], Field(description='Indicates this preview request succeeded')]
+    creative_id: Annotated[
+        str,
+        Field(
+            description='ID of the creative this result corresponds to. Enables correlation when processing batch results.'
+        ),
+    ]
+    response: Annotated[Response, Field(description='Preview data for successful requests')]
+    errors: Annotated[
+        list[Error] | None, Field(description='Errors for failed requests', min_length=1)
+    ] = None
+
+
+class Renders18(Renders):
+    pass
+
+
+class Renders19(Renders13):
+    pass
+
+
+class Renders20(Renders14):
+    pass
+
+
+class Preview14(AdCPBaseModel):
+    preview_id: str
+    renders: Annotated[list[Renders18 | Renders19 | Renders20], Field(min_length=1)]
+    input: Input15
+
+
+class Response3(AdCPBaseModel):
+    previews: Annotated[
+        list[Preview14],
+        Field(description='Array of preview variants for this creative', min_length=1),
+    ]
+    interactive_url: AnyUrl | None = None
+    expires_at: Annotated[AwareDatetime, Field(description='When the preview URLs expire')]
+
+
+class Error22(Error):
+    pass
+
+
+class Results3(AdCPBaseModel):
+    success: Annotated[Literal[False], Field(description='Indicates this preview request failed')]
+    creative_id: Annotated[
+        str,
+        Field(
+            description='ID of the creative this result corresponds to. Enables correlation when processing batch results.'
+        ),
+    ]
+    response: Annotated[
+        Response3 | None, Field(description='Preview data for successful requests')
+    ] = None
+    errors: Annotated[list[Error22], Field(description='Errors for failed requests', min_length=1)]
+
+
+class PreviewCreativeResponse5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    response_type: Annotated[
+        Literal['batch'],
+        Field(description='Discriminator indicating this is a batch preview response'),
+    ]
+    results: Annotated[
+        list[Results | Results3],
+        Field(
+            description='Array of preview results corresponding to each request in the same order. results[0] is the result for requests[0], results[1] for requests[1], etc. Order is guaranteed even when some requests fail. Each result contains either a successful preview response or an error.',
+            min_length=1,
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Renders21(Renders):
+    pass
+
+
+class Renders22(Renders13):
+    pass
+
+
+class Renders23(Renders14):
+    pass
+
+
+class Preview15(AdCPBaseModel):
+    preview_id: Annotated[str, Field(description='Unique identifier for this preview')]
+    renders: Annotated[
+        list[Renders21 | Renders22 | Renders23],
+        Field(description='Rendered pieces for this variant', min_length=1),
+    ]
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy180(DeclaredBy):
+    pass
+
+
+class RenderGuidance180(RenderGuidance):
+    pass
+
+
+class Jurisdiction191(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance180 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure181(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction191] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem180(VerificationItem):
+    pass
+
+
+class Provenance181(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy180 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure181 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem180] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets278(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance181 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy181(DeclaredBy):
+    pass
+
+
+class RenderGuidance181(RenderGuidance):
+    pass
+
+
+class Jurisdiction192(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance181 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure182(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction192] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem181(VerificationItem):
+    pass
+
+
+class Provenance182(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy181 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure182 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem181] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets279(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance182 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy182(DeclaredBy):
+    pass
+
+
+class RenderGuidance182(RenderGuidance):
+    pass
+
+
+class Jurisdiction193(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance182 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure183(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction193] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem182(VerificationItem):
+    pass
+
+
+class Provenance183(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy182 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure183 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem182] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets280(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance183 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy183(DeclaredBy):
+    pass
+
+
+class RenderGuidance183(RenderGuidance):
+    pass
+
+
+class Jurisdiction194(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance183 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure184(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction194] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem183(VerificationItem):
+    pass
+
+
+class Provenance184(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy183 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure184 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem183] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets281(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance184 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy184(DeclaredBy):
+    pass
+
+
+class RenderGuidance184(RenderGuidance):
+    pass
+
+
+class Jurisdiction195(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance184 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure185(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction195] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem184(VerificationItem):
+    pass
+
+
+class Provenance185(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy184 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure185 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem184] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets282(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance185 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy185(DeclaredBy):
+    pass
+
+
+class RenderGuidance185(RenderGuidance):
+    pass
+
+
+class Jurisdiction196(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance185 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure186(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction196] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem185(VerificationItem):
+    pass
+
+
+class Provenance186(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy185 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure186 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem185] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets283(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance186 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy186(DeclaredBy):
+    pass
+
+
+class RenderGuidance186(RenderGuidance):
+    pass
+
+
+class Jurisdiction197(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance186 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure187(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction197] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem186(VerificationItem):
+    pass
+
+
+class Provenance187(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy186 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure187 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem186] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets284(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance187 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy187(DeclaredBy):
+    pass
+
+
+class RenderGuidance187(RenderGuidance):
+    pass
+
+
+class Jurisdiction198(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance187 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure188(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction198] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem187(VerificationItem):
+    pass
+
+
+class Provenance188(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy187 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure188 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem187] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets285(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance188 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method30(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method30, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy188(DeclaredBy):
+    pass
+
+
+class RenderGuidance188(RenderGuidance):
+    pass
+
+
+class Jurisdiction199(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance188 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure189(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction199] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem188(VerificationItem):
+    pass
+
+
+class Provenance189(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy188 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure189 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem188] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets286(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance189 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy189(DeclaredBy):
+    pass
+
+
+class RenderGuidance189(RenderGuidance):
+    pass
+
+
+class Jurisdiction200(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance189 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure190(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction200] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem189(VerificationItem):
+    pass
+
+
+class Provenance190(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy189 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure190 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem189] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets287(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance190 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent42(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy190(DeclaredBy):
+    pass
+
+
+class RenderGuidance190(RenderGuidance):
+    pass
+
+
+class Jurisdiction201(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance190 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure191(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction201] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem190(VerificationItem):
+    pass
+
+
+class Provenance191(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy190 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure191 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem190] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets288(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent42] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance191 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy191(DeclaredBy):
+    pass
+
+
+class RenderGuidance191(RenderGuidance):
+    pass
+
+
+class Jurisdiction202(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance191 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure192(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction202] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem191(VerificationItem):
+    pass
+
+
+class Provenance192(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy191 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure192 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem191] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets289(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent42] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance192 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets290(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role225(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role225,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction203(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction203] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets291(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets292(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class RightsAgent(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+    id: Annotated[str, Field(description='Agent identifier')]
+
+
+class Use(Enum):
+    likeness = 'likeness'
+    voice = 'voice'
+    name = 'name'
+    endorsement = 'endorsement'
+    motion_capture = 'motion_capture'
+    signature = 'signature'
+    catchphrase = 'catchphrase'
+    sync = 'sync'
+    background_music = 'background_music'
+    editorial = 'editorial'
+    commercial = 'commercial'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ExcludedCountry(Country):
+    pass
+
+
+class RightType(Enum):
+    talent = 'talent'
+    character = 'character'
+    brand_ip = 'brand_ip'
+    music = 'music'
+    stock_media = 'stock_media'
+
+
+class ApprovalStatus(Enum):
+    pending = 'pending'
+    approved = 'approved'
+    rejected = 'rejected'
+
+
+class Right(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from the acquire_rights response')
+    ]
+    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
+    valid_from: Annotated[
+        AwareDatetime | None, Field(description='Start of the rights validity period')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='End of the rights validity period. Creative should not be served after this time.'
+        ),
+    ] = None
+    uses: Annotated[
+        list[Use], Field(description='Rights uses covered by this constraint', min_length=1)
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.'
+        ),
+    ] = None
+    excluded_countries: Annotated[
+        list[ExcludedCountry] | None,
+        Field(
+            description='Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.'
+        ),
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(
+            description='Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.',
+            ge=1,
+        ),
+    ] = None
+    right_type: Annotated[
+        RightType | None,
+        Field(
+            description='Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.',
+            title='Right Type',
+        ),
+    ] = None
+    approval_status: Annotated[
+        ApprovalStatus | None,
+        Field(
+            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
+        ),
+    ] = None
+    verification_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Type69(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type69,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy192(DeclaredBy):
+    pass
+
+
+class RenderGuidance192(RenderGuidance):
+    pass
+
+
+class Jurisdiction204(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance192 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure193(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction204] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem192(VerificationItem):
+    pass
+
+
+class Provenance193(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy192 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure193 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem192] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Manifest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets278
+            | Assets279
+            | Assets280
+            | Assets281
+            | Assets282
+            | Assets283
+            | Assets284
+            | Assets285
+            | Assets286
+            | Assets287
+            | Assets288
+            | Assets289
+            | Assets290
+            | Assets291
+            | Assets292,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance193 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PreviewCreativeResponse6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    response_type: Annotated[
+        Literal['variant'],
+        Field(description='Discriminator indicating this is a variant preview response'),
+    ]
+    variant_id: Annotated[str, Field(description='Platform-assigned variant identifier')]
+    creative_id: Annotated[
+        str | None, Field(description='Creative identifier this variant belongs to')
+    ] = None
+    previews: Annotated[
+        list[Preview15],
+        Field(
+            description='Array of rendered pieces for this variant. Most formats render as a single piece.',
+            min_length=1,
+        ),
+    ]
+    manifest: Annotated[
+        Manifest | None,
+        Field(
+            description='The rendered creative manifest for this variant — the actual output that was served, not the input assets',
+            title='Creative Manifest',
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 timestamp when preview links expire')
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+PreviewCreativeResponse = PreviewCreativeResponse4 | PreviewCreativeResponse5 | PreviewCreativeResponse6
diff --git a/src/adcp/types/generated_poc/bundled/creative/sync_creatives_request.py b/src/adcp/types/generated_poc/bundled/creative/sync_creatives_request.py
new file mode 100644
index 000000000..25d317996
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/sync_creatives_request.py
@@ -0,0 +1,3453 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/sync_creatives_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account37(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy195(DeclaredBy):
+    pass
+
+
+class RenderGuidance195(RenderGuidance):
+    pass
+
+
+class Jurisdiction207(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance195 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure196(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction207] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem195(VerificationItem):
+    pass
+
+
+class Provenance195(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy195 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure196 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem195] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets294(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance195 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy196(DeclaredBy):
+    pass
+
+
+class RenderGuidance196(RenderGuidance):
+    pass
+
+
+class Jurisdiction208(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance196 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure197(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction208] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem196(VerificationItem):
+    pass
+
+
+class Provenance196(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy196 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure197 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem196] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets295(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance196 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy197(DeclaredBy):
+    pass
+
+
+class RenderGuidance197(RenderGuidance):
+    pass
+
+
+class Jurisdiction209(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance197 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure198(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction209] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem197(VerificationItem):
+    pass
+
+
+class Provenance197(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy197 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure198 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem197] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets296(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance197 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy198(DeclaredBy):
+    pass
+
+
+class RenderGuidance198(RenderGuidance):
+    pass
+
+
+class Jurisdiction210(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance198 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure199(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction210] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem198(VerificationItem):
+    pass
+
+
+class Provenance198(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy198 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure199 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem198] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets297(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance198 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy199(DeclaredBy):
+    pass
+
+
+class RenderGuidance199(RenderGuidance):
+    pass
+
+
+class Jurisdiction211(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance199 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure200(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction211] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem199(VerificationItem):
+    pass
+
+
+class Provenance199(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy199 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure200 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem199] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets298(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance199 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy200(DeclaredBy):
+    pass
+
+
+class RenderGuidance200(RenderGuidance):
+    pass
+
+
+class Jurisdiction212(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance200 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure201(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction212] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem200(VerificationItem):
+    pass
+
+
+class Provenance200(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy200 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure201 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem200] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets299(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance200 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy201(DeclaredBy):
+    pass
+
+
+class RenderGuidance201(RenderGuidance):
+    pass
+
+
+class Jurisdiction213(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance201 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure202(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction213] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem201(VerificationItem):
+    pass
+
+
+class Provenance201(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy201 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure202 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem201] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets300(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance201 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy202(DeclaredBy):
+    pass
+
+
+class RenderGuidance202(RenderGuidance):
+    pass
+
+
+class Jurisdiction214(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance202 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure203(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction214] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem202(VerificationItem):
+    pass
+
+
+class Provenance202(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy202 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure203 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem202] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets301(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance202 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method32(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method32, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy203(DeclaredBy):
+    pass
+
+
+class RenderGuidance203(RenderGuidance):
+    pass
+
+
+class Jurisdiction215(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance203 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure204(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction215] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem203(VerificationItem):
+    pass
+
+
+class Provenance203(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy203 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure204 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem203] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets302(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance203 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy204(DeclaredBy):
+    pass
+
+
+class RenderGuidance204(RenderGuidance):
+    pass
+
+
+class Jurisdiction216(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance204 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure205(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction216] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem204(VerificationItem):
+    pass
+
+
+class Provenance204(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy204 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure205 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem204] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets303(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance204 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent46(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy205(DeclaredBy):
+    pass
+
+
+class RenderGuidance205(RenderGuidance):
+    pass
+
+
+class Jurisdiction217(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance205 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure206(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction217] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem205(VerificationItem):
+    pass
+
+
+class Provenance205(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy205 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure206 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem205] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets304(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent46] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance205 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy206(DeclaredBy):
+    pass
+
+
+class RenderGuidance206(RenderGuidance):
+    pass
+
+
+class Jurisdiction218(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance206 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure207(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction218] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem206(VerificationItem):
+    pass
+
+
+class Provenance206(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy206 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure207 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem206] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets305(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent46] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance206 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets306(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role242(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role242,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction219(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction219] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets307(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets308(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Input(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this preview variant')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to apply for this preview')
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(description='Natural language description of the context for AI-generated content'),
+    ] = None
+
+
+class Status(Enum):
+    processing = 'processing'
+    pending_review = 'pending_review'
+    approved = 'approved'
+    rejected = 'rejected'
+    archived = 'archived'
+
+
+class Type88(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type88,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy207(DeclaredBy):
+    pass
+
+
+class RenderGuidance207(RenderGuidance):
+    pass
+
+
+class Jurisdiction220(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance207 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure208(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction220] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem207(VerificationItem):
+    pass
+
+
+class Provenance207(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy207 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure208 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem207] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.',
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets294
+            | Assets295
+            | Assets296
+            | Assets297
+            | Assets298
+            | Assets299
+            | Assets300
+            | Assets301
+            | Assets302
+            | Assets303
+            | Assets304
+            | Assets305
+            | Assets306
+            | Assets307
+            | Assets308,
+        ],
+        Field(description='Assets required by the format, keyed by asset_id'),
+    ]
+    inputs: Annotated[
+        list[Input] | None,
+        Field(
+            description='Preview contexts for generative formats - defines what scenarios to generate previews for'
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
+    ] = None
+    status: Annotated[
+        Status | None,
+        Field(
+            description="For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+            title='Creative Status',
+        ),
+    ] = None
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            min_length=1,
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance207 | None,
+        Field(
+            description='Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assignment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    creative_id: Annotated[str, Field(description='ID of the creative to assign')]
+    package_id: Annotated[str, Field(description='ID of the package to assign the creative to')]
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Relative delivery weight (0-100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict this creative to specific placements within the package. When omitted, the creative is eligible for all placements.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class ValidationMode(Enum):
+    strict = 'strict'
+    lenient = 'lenient'
+
+
+class Scheme(Enum):
+    Bearer = 'Bearer'
+    HMAC_SHA256 = 'HMAC-SHA256'
+
+
+class Authentication(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    schemes: Annotated[
+        list[Scheme],
+        Field(
+            description="Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+            max_length=1,
+            min_length=1,
+        ),
+    ]
+    credentials: Annotated[
+        str,
+        Field(
+            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
+            min_length=32,
+        ),
+    ]
+
+
+class PushNotificationConfig(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for task status notifications')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
+    authentication: Annotated[
+        Authentication,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
+
+
+class SyncCreativesRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account37,
+        Field(
+            description='Account that owns these creatives.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ]
+    creatives: Annotated[
+        list[Creative],
+        Field(
+            description='Array of creative assets to sync (create or update)',
+            max_length=100,
+            min_length=1,
+        ),
+    ]
+    creative_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Optional filter to limit sync scope to specific creative IDs. When provided, only these creatives will be created/updated. Other creatives in the library are unaffected. Useful for partial updates and error recovery.',
+            max_length=100,
+            min_length=1,
+        ),
+    ] = None
+    assignments: Annotated[
+        list[Assignment] | None,
+        Field(
+            description='Optional bulk assignment of creatives to packages. Each entry maps one creative to one package with optional weight and placement targeting. Standalone creative agents that do not manage media buys ignore this field.',
+            min_length=1,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated idempotency key for safe retries. If a sync fails without a response, resending with the same idempotency_key guarantees at-most-once execution. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    delete_missing: Annotated[
+        bool | None,
+        Field(
+            description='When true, creatives not included in this sync will be archived. Use with caution for full library replacement. Invalid when creative_ids is provided — delete_missing applies to the entire library scope, not a filtered subset.'
+        ),
+    ] = False
+    dry_run: Annotated[
+        bool | None,
+        Field(
+            description='When true, preview changes without applying them. Returns what would be created/updated/deleted.'
+        ),
+    ] = False
+    validation_mode: Annotated[
+        ValidationMode | None,
+        Field(
+            description="Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid creatives and reports errors.",
+            title='Validation Mode',
+        ),
+    ] = ValidationMode.strict
+    push_notification_config: Annotated[
+        PushNotificationConfig | None,
+        Field(
+            description='Optional webhook configuration for async sync notifications. The agent will send a webhook when sync completes if the operation takes longer than immediate response time (typically for large bulk operations or manual approval/HITL).',
+            title='Push Notification Config',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/creative/sync_creatives_response.py b/src/adcp/types/generated_poc/bundled/creative/sync_creatives_response.py
new file mode 100644
index 000000000..d8446bbf5
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/creative/sync_creatives_response.py
@@ -0,0 +1,745 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/creative/sync_creatives_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel, StringConstraints
+
+
+class Status(Enum):
+    active = 'active'
+    pending_approval = 'pending_approval'
+    rejected = 'rejected'
+    payment_required = 'payment_required'
+    suspended = 'suspended'
+    closed = 'closed'
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Billing(Enum):
+    operator = 'operator'
+    agent = 'agent'
+    advertiser = 'advertiser'
+
+
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
+    ]
+    city: Annotated[str, Field(max_length=100)]
+    postal_code: Annotated[str, Field(max_length=20)]
+    region: Annotated[
+        str | None, Field(description='State, province, or region', max_length=100)
+    ] = None
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    ]
+
+
+class Role(Enum):
+    billing = 'billing'
+    legal = 'legal'
+    creative = 'creative'
+    general = 'general'
+
+
+class Contact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    role: Annotated[
+        Role, Field(description="Contact's functional role in the business relationship")
+    ]
+    name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
+        None
+    )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    phone: Annotated[str | None, Field(max_length=30)] = None
+
+
+class Bank(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
+    ] = None
+    bic: Annotated[
+        str | None,
+        Field(
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+        ),
+    ] = None
+    routing_number: Annotated[
+        str | None,
+        Field(
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
+        ),
+    ] = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class BillingEntity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PaymentTerms(Enum):
+    net_15 = 'net_15'
+    net_30 = 'net_30'
+    net_45 = 'net_45'
+    net_60 = 'net_60'
+    net_90 = 'net_90'
+    prepay = 'prepay'
+
+
+class CreditLimit(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
+
+
+class Setup(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where the human can complete the required action (credit application, legal agreement, add funds).'
+        ),
+    ] = None
+    message: Annotated[str, Field(description="Human-readable description of what's needed.")]
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='When this setup link expires.')
+    ] = None
+
+
+class AccountScope(Enum):
+    operator = 'operator'
+    brand = 'brand'
+    operator_brand = 'operator_brand'
+    agent = 'agent'
+
+
+class Category(RootModel[str]):
+    root: Annotated[str, Field(max_length=64, pattern='^[a-z][a-z0-9_]*$')]
+
+
+class GovernanceAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL. Must use HTTPS.')]
+    categories: Annotated[
+        list[Category] | None,
+        Field(
+            description="Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+            max_length=20,
+        ),
+    ] = None
+
+
+class Protocol(Enum):
+    s3 = 's3'
+    gcs = 'gcs'
+    azure_blob = 'azure_blob'
+
+
+class Format(Enum):
+    jsonl = 'jsonl'
+    csv = 'csv'
+    parquet = 'parquet'
+    avro = 'avro'
+    orc = 'orc'
+
+
+class Compression(Enum):
+    gzip = 'gzip'
+    none = 'none'
+
+
+class ReportingBucket(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    protocol: Annotated[
+        Protocol, Field(description='Cloud storage protocol', title='Cloud Storage Protocol')
+    ]
+    bucket: Annotated[
+        str,
+        Field(
+            description='Bucket or container name',
+            max_length=63,
+            min_length=3,
+            pattern='^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$',
+        ),
+    ]
+    prefix: Annotated[
+        str | None,
+        Field(
+            description='Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.',
+            examples=['accounts/pinnacle/adcp', 'reporting/2024'],
+            max_length=512,
+            pattern='^[a-zA-Z0-9/_.-]+$',
+        ),
+    ] = None
+    region: Annotated[
+        str | None,
+        Field(
+            description='Cloud region for the bucket',
+            examples=['us-east-1', 'europe-west1'],
+            max_length=64,
+            pattern='^[a-z0-9-]+$',
+        ),
+    ] = None
+    format: Annotated[
+        Format | None,
+        Field(
+            description='File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).'
+        ),
+    ] = Format.jsonl
+    compression: Annotated[
+        Compression | None, Field(description='Compression applied to delivered files')
+    ] = Compression.gzip
+    file_retention_days: Annotated[
+        int,
+        Field(
+            description='How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.',
+            examples=[14, 30, 90],
+            ge=1,
+        ),
+    ]
+    setup_instructions: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation — buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery.'
+        ),
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    account_id: Annotated[str, Field(description='Unique identifier for this account')]
+    name: Annotated[
+        str, Field(description="Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')")
+    ]
+    advertiser: Annotated[
+        str | None, Field(description='The advertiser whose rates apply to this account')
+    ] = None
+    billing_proxy: Annotated[
+        str | None,
+        Field(
+            description='Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)'
+        ),
+    ] = None
+    status: Annotated[
+        Status,
+        Field(
+            description='Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.',
+            title='Account Status',
+        ),
+    ]
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    operator: Annotated[
+        str | None,
+        Field(
+            description="Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ] = None
+    billing: Annotated[
+        Billing | None,
+        Field(
+            description="Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+        ),
+    ] = None
+    billing_entity: Annotated[
+        BillingEntity | None,
+        Field(
+            description='Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).',
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    rate_card: Annotated[
+        str | None, Field(description='Identifier for the rate card applied to this account')
+    ] = None
+    payment_terms: Annotated[
+        PaymentTerms | None,
+        Field(
+            description='Payment terms agreed for this account. Binding for all invoices when the account is active.'
+        ),
+    ] = None
+    credit_limit: Annotated[
+        CreditLimit | None, Field(description='Maximum outstanding balance allowed')
+    ] = None
+    setup: Annotated[
+        Setup | None,
+        Field(
+            description="Present when status is 'pending_approval'. Contains next steps for completing account activation."
+        ),
+    ] = None
+    account_scope: Annotated[
+        AccountScope | None,
+        Field(
+            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+        ),
+    ] = None
+    governance_agents: Annotated[
+        list[GovernanceAgent] | None,
+        Field(
+            description='Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses — use sync_governance to set or update credentials.',
+            max_length=10,
+        ),
+    ] = None
+    reporting_bucket: Annotated[
+        ReportingBucket | None,
+        Field(
+            description="Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix — bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities)."
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, this is a sandbox account — no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Action(Enum):
+    created = 'created'
+    updated = 'updated'
+    unchanged = 'unchanged'
+    failed = 'failed'
+    deleted = 'deleted'
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Creative ID from the request')]
+    account: Annotated[
+        Account | None,
+        Field(
+            description='Account that owns this creative',
+            examples=[
+                {
+                    'description': 'Direct advertiser account',
+                    'data': {
+                        'account_id': 'acc_acme_direct',
+                        'name': 'Acme',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'acme-corp.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Advertiser account with agency billing proxy',
+                    'data': {
+                        'account_id': 'acc_acme_pinnacle',
+                        'name': 'Acme c/o Pinnacle',
+                        'advertiser': 'Acme Corp',
+                        'billing_proxy': 'Pinnacle Media',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator_brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_60',
+                    },
+                },
+                {
+                    'description': 'Agency as direct buyer',
+                    'data': {
+                        'account_id': 'acc_pinnacle',
+                        'name': 'Pinnacle',
+                        'advertiser': 'Pinnacle Media',
+                        'brand': {'domain': 'pinnacle-media.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator',
+                        'rate_card': 'agency_standard',
+                        'payment_terms': 'net_45',
+                    },
+                },
+                {
+                    'description': 'Account with brand identity and operator (via sync_accounts)',
+                    'data': {
+                        'account_id': 'acc_spark_001',
+                        'name': 'Spark (via Pinnacle)',
+                        'advertiser': 'Nova Brands',
+                        'status': 'active',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'agent',
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Pending account awaiting seller approval',
+                    'data': {
+                        'account_id': 'acc_glow_pending',
+                        'name': 'Glow',
+                        'advertiser': 'Nova Brands',
+                        'status': 'pending_approval',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                    },
+                },
+                {
+                    'description': 'Agency operates but advertiser is billed directly with structured billing entity',
+                    'data': {
+                        'account_id': 'acc_acme_direct_bill',
+                        'name': 'Acme (billed direct)',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'advertiser',
+                        'billing_entity': {
+                            'legal_name': 'Acme Corporation GmbH',
+                            'vat_id': 'DE987654321',
+                            'address': {
+                                'street': 'Hauptstrasse 42',
+                                'city': 'Munich',
+                                'postal_code': '80331',
+                                'country': 'DE',
+                            },
+                            'contacts': [
+                                {
+                                    'role': 'billing',
+                                    'name': 'AP Department',
+                                    'email': 'billing@acme-corp.com',
+                                }
+                            ],
+                        },
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+            ],
+            title='Account',
+        ),
+    ] = None
+    action: Annotated[
+        Action, Field(description='Action taken for this creative', title='Creative Action')
+    ]
+    platform_id: Annotated[
+        str | None, Field(description='Platform-specific ID assigned to the creative')
+    ] = None
+    changes: Annotated[
+        list[str] | None,
+        Field(description="Field names that were modified (only present when action='updated')"),
+    ] = None
+    errors: Annotated[
+        list[Error] | None,
+        Field(description="Validation or processing errors (only present when action='failed')"),
+    ] = None
+    warnings: Annotated[
+        list[str] | None, Field(description='Non-fatal warnings about this creative')
+    ] = None
+    preview_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Preview URL for generative creatives (only present for generative formats)'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when preview link expires (only present when preview_url exists)'
+        ),
+    ] = None
+    assigned_to: Annotated[
+        list[str] | None,
+        Field(
+            description='Package IDs this creative was successfully assigned to (only present when assignments were requested)'
+        ),
+    ] = None
+    assignment_errors: Annotated[
+        dict[Annotated[str, StringConstraints(pattern=r'^[a-zA-Z0-9_-]+$')], str] | None,
+        Field(
+            description='Assignment errors by package ID (only present when assignment failures occurred)'
+        ),
+    ] = None
+
+
+class SyncCreativesResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    dry_run: Annotated[
+        bool | None, Field(description='Whether this was a dry run (no actual changes made)')
+    ] = None
+    creatives: Annotated[
+        list[Creative],
+        Field(
+            description="Results for each creative processed. Items with action='failed' indicate per-item validation/processing failures, not operation-level failures."
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Error34(Error):
+    pass
+
+
+class SyncCreativesResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error34],
+        Field(
+            description='Operation-level errors that prevented processing any creatives (e.g., authentication failure, service unavailable, invalid request format)',
+            min_length=1,
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+SyncCreativesResponse = SyncCreativesResponse3 | SyncCreativesResponse4
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/__init__.py b/src/adcp/types/generated_poc/bundled/media_buy/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/build_creative_request.py b/src/adcp/types/generated_poc/bundled/media_buy/build_creative_request.py
new file mode 100644
index 000000000..4f007208c
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/build_creative_request.py
@@ -0,0 +1,3546 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/build_creative_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy1(DeclaredBy):
+    pass
+
+
+class RenderGuidance1(RenderGuidance):
+    pass
+
+
+class Jurisdiction1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance1 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction1] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem1(VerificationItem):
+    pass
+
+
+class Provenance2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy1 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure2 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem1] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance2 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy2(DeclaredBy):
+    pass
+
+
+class RenderGuidance2(RenderGuidance):
+    pass
+
+
+class Jurisdiction2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance2 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction2] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem2(VerificationItem):
+    pass
+
+
+class Provenance3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy2 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure3 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem2] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance3 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy3(DeclaredBy):
+    pass
+
+
+class RenderGuidance3(RenderGuidance):
+    pass
+
+
+class Jurisdiction3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance3 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction3] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem3(VerificationItem):
+    pass
+
+
+class Provenance4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy3 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure4 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem3] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance4 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy4(DeclaredBy):
+    pass
+
+
+class RenderGuidance4(RenderGuidance):
+    pass
+
+
+class Jurisdiction4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance4 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction4] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem4(VerificationItem):
+    pass
+
+
+class Provenance5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy4 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure5 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem4] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance5 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy5(DeclaredBy):
+    pass
+
+
+class RenderGuidance5(RenderGuidance):
+    pass
+
+
+class Jurisdiction5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance5 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction5] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem5(VerificationItem):
+    pass
+
+
+class Provenance6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy5 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure6 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem5] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance6 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy6(DeclaredBy):
+    pass
+
+
+class RenderGuidance6(RenderGuidance):
+    pass
+
+
+class Jurisdiction6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance6 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction6] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem6(VerificationItem):
+    pass
+
+
+class Provenance7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy6 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure7 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem6] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance7 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy7(DeclaredBy):
+    pass
+
+
+class RenderGuidance7(RenderGuidance):
+    pass
+
+
+class Jurisdiction7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance7 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction7] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem7(VerificationItem):
+    pass
+
+
+class Provenance8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy7 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure8 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem7] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance8 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy8(DeclaredBy):
+    pass
+
+
+class RenderGuidance8(RenderGuidance):
+    pass
+
+
+class Jurisdiction8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance8 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction8] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem8(VerificationItem):
+    pass
+
+
+class Provenance9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy8 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure9 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem8] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance9 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method1(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method1, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy9(DeclaredBy):
+    pass
+
+
+class RenderGuidance9(RenderGuidance):
+    pass
+
+
+class Jurisdiction9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance9 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction9] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem9(VerificationItem):
+    pass
+
+
+class Provenance10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy9 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure10 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem9] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance10 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy10(DeclaredBy):
+    pass
+
+
+class RenderGuidance10(RenderGuidance):
+    pass
+
+
+class Jurisdiction10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance10 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction10] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem10(VerificationItem):
+    pass
+
+
+class Provenance11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy10 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure11 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem10] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance11 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent2(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy11(DeclaredBy):
+    pass
+
+
+class RenderGuidance11(RenderGuidance):
+    pass
+
+
+class Jurisdiction11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance11 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction11] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem11(VerificationItem):
+    pass
+
+
+class Provenance12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy11 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure12 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem11] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets15(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent2] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance12 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy12(DeclaredBy):
+    pass
+
+
+class RenderGuidance12(RenderGuidance):
+    pass
+
+
+class Jurisdiction12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance12 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction12] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem12(VerificationItem):
+    pass
+
+
+class Provenance13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy12 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure13 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem12] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets16(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent2] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance13 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets17(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role14(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role14,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction13(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction13] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets18(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets19(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class RightsAgent(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+    id: Annotated[str, Field(description='Agent identifier')]
+
+
+class Use(Enum):
+    likeness = 'likeness'
+    voice = 'voice'
+    name = 'name'
+    endorsement = 'endorsement'
+    motion_capture = 'motion_capture'
+    signature = 'signature'
+    catchphrase = 'catchphrase'
+    sync = 'sync'
+    background_music = 'background_music'
+    editorial = 'editorial'
+    commercial = 'commercial'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ExcludedCountry(Country):
+    pass
+
+
+class RightType(Enum):
+    talent = 'talent'
+    character = 'character'
+    brand_ip = 'brand_ip'
+    music = 'music'
+    stock_media = 'stock_media'
+
+
+class ApprovalStatus(Enum):
+    pending = 'pending'
+    approved = 'approved'
+    rejected = 'rejected'
+
+
+class Right(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from the acquire_rights response')
+    ]
+    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
+    valid_from: Annotated[
+        AwareDatetime | None, Field(description='Start of the rights validity period')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='End of the rights validity period. Creative should not be served after this time.'
+        ),
+    ] = None
+    uses: Annotated[
+        list[Use], Field(description='Rights uses covered by this constraint', min_length=1)
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.'
+        ),
+    ] = None
+    excluded_countries: Annotated[
+        list[ExcludedCountry] | None,
+        Field(
+            description='Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.'
+        ),
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(
+            description='Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.',
+            ge=1,
+        ),
+    ] = None
+    right_type: Annotated[
+        RightType | None,
+        Field(
+            description='Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.',
+            title='Right Type',
+        ),
+    ] = None
+    approval_status: Annotated[
+        ApprovalStatus | None,
+        Field(
+            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
+        ),
+    ] = None
+    verification_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Type4(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type4,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy13(DeclaredBy):
+    pass
+
+
+class RenderGuidance13(RenderGuidance):
+    pass
+
+
+class Jurisdiction14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance13 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction14] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem13(VerificationItem):
+    pass
+
+
+class Provenance14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy13 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure14 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem13] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class CreativeManifest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets5
+            | Assets6
+            | Assets7
+            | Assets8
+            | Assets9
+            | Assets10
+            | Assets11
+            | Assets12
+            | Assets13
+            | Assets14
+            | Assets15
+            | Assets16
+            | Assets17
+            | Assets18
+            | Assets19,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance14 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TargetFormatId(FormatId):
+    pass
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class Quality(Enum):
+    draft = 'draft'
+    production = 'production'
+
+
+class PreviewInput(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad')"
+        ),
+    ]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to use for this preview variant')
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(description='Natural language description of the context for AI-generated content'),
+    ] = None
+
+
+class PreviewOutputFormat(Enum):
+    url = 'url'
+    html = 'html'
+
+
+class BuildCreativeRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    message: Annotated[
+        str | None,
+        Field(
+            description='Natural language instructions for the transformation or generation. For pure generation, this is the creative brief. For transformation, this provides guidance on how to adapt the creative. For refinement, this describes the desired changes.'
+        ),
+    ] = None
+    creative_manifest: Annotated[
+        CreativeManifest | None,
+        Field(
+            description='Creative manifest to transform or generate from. For pure generation, this should include the target format_id and any required input assets. For transformation (e.g., resizing, reformatting), this is the complete creative to adapt. When creative_id is provided, the agent resolves the creative from its library and this field is ignored.',
+            title='Creative Manifest',
+        ),
+    ] = None
+    creative_id: Annotated[
+        str | None,
+        Field(
+            description="Reference to a creative in the agent's library. The creative agent resolves this to a manifest from its library. Use this instead of creative_manifest when retrieving an existing creative for tag generation or format adaptation."
+        ),
+    ] = None
+    concept_id: Annotated[
+        str | None,
+        Field(
+            description='Creative concept containing the creative. Creative agents SHOULD assign globally unique creative_id values; when they cannot guarantee uniqueness, concept_id is REQUIRED to disambiguate.'
+        ),
+    ] = None
+    media_buy_id: Annotated[
+        str | None,
+        Field(
+            description='Media buy identifier for tag generation context. When the creative agent is also the ad server, this provides the trafficking context needed to generate placement-specific tags (e.g., CM360 placement ID). Not needed when tags are generated at the creative level (most creative platforms).'
+        ),
+    ] = None
+    package_id: Annotated[
+        str | None,
+        Field(
+            description='Package identifier within the media buy. Used with media_buy_id when the creative agent needs line-item-level context for tag generation. Omit to get a tag not scoped to a specific package.'
+        ),
+    ] = None
+    target_format_id: Annotated[
+        TargetFormatId | None,
+        Field(
+            description='Single format ID to generate. Mutually exclusive with target_format_ids. The format definition specifies required input assets and output structure.',
+            title='Format ID',
+        ),
+    ] = None
+    target_format_ids: Annotated[
+        list[TargetFormatId] | None,
+        Field(
+            description='Array of format IDs to generate in a single call. Mutually exclusive with target_format_id. The creative agent produces one manifest per format. Each format definition specifies its own required input assets and output structure.',
+            min_length=1,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account4 | None,
+        Field(
+            description='Account reference for pricing and billing. When present, the creative agent applies account-specific pricing from the rate card, records the build against the account for billing, and can enforce account-level quotas or entitlements. Required by creative agents that charge for their services.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference for creative generation. Resolved to full brand identity (colors, logos, tone) at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    quality: Annotated[
+        Quality | None,
+        Field(
+            description="Quality tier for generation. 'draft' produces fast, lower-fidelity output for iteration and review. 'production' produces full-quality output for final delivery. If omitted, the creative agent uses its own default. For non-generative transforms (e.g., format resizing), creative agents MAY ignore this field.",
+            title='Creative Quality',
+        ),
+    ] = None
+    item_limit: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of catalog items to use when generating. When a catalog asset contains more items than this limit, the creative agent selects the top items based on relevance or catalog ordering. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets.",
+            ge=1,
+        ),
+    ] = None
+    include_preview: Annotated[
+        bool | None,
+        Field(
+            description="When true, requests the creative agent to include preview renders in the response alongside the manifest. Agents that support this return a 'preview' object in the response using the same structure as preview_creative. Agents that do not support inline preview simply omit the field. This avoids a separate preview_creative round trip for platforms that generate previews as a byproduct of building."
+        ),
+    ] = None
+    preview_inputs: Annotated[
+        list[PreviewInput] | None,
+        Field(
+            description='Input sets for preview generation when include_preview is true. Each input set defines macros and context values for one preview variant. If include_preview is true but this is omitted, the agent generates a single default preview. Only supported with target_format_id (single-format requests). Ignored when using target_format_ids — multi-format requests generate one default preview per format. Ignored when include_preview is false or omitted.',
+            min_length=1,
+        ),
+    ] = None
+    preview_quality: Annotated[
+        Quality | None,
+        Field(
+            description="Render quality for inline preview when include_preview is true. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Independent of the build quality parameter — you can build at draft quality and preview at production quality, or vice versa. If omitted, the creative agent uses its own default. Ignored when include_preview is false or omitted.",
+            title='Creative Quality',
+        ),
+    ] = None
+    preview_output_format: Annotated[
+        PreviewOutputFormat | None,
+        Field(
+            description="Output format for preview renders when include_preview is true. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). Ignored when include_preview is false or omitted.",
+            title='Preview Output Format',
+        ),
+    ] = PreviewOutputFormat.url
+    macro_values: Annotated[
+        dict[str, str] | None,
+        Field(
+            description="Macro values to pre-substitute into the output manifest's assets. Keys are universal macro names (e.g., CLICK_URL, CACHEBUSTER); values are the substitution strings. The creative agent translates universal macros to its platform's native syntax. Substitution is literal — all occurrences of each macro in output assets are replaced with the provided value. The caller is responsible for URL-encoding values if the output context requires it. Macros not provided here remain as {MACRO} placeholders for the sales agent to resolve at serve time. Creative agents MUST ignore keys they do not recognize — unknown macro names are not an error."
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate creative generation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/build_creative_response.py b/src/adcp/types/generated_poc/bundled/media_buy/build_creative_response.py
new file mode 100644
index 000000000..f7ca35e77
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/build_creative_response.py
@@ -0,0 +1,6244 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/build_creative_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy15(DeclaredBy):
+    pass
+
+
+class RenderGuidance15(RenderGuidance):
+    pass
+
+
+class Jurisdiction16(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance15 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure16(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction16] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem15(VerificationItem):
+    pass
+
+
+class Provenance16(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy15 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure16 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem15] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets21(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance16 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy16(DeclaredBy):
+    pass
+
+
+class RenderGuidance16(RenderGuidance):
+    pass
+
+
+class Jurisdiction17(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance16 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure17(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction17] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem16(VerificationItem):
+    pass
+
+
+class Provenance17(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy16 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure17 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem16] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance17 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy17(DeclaredBy):
+    pass
+
+
+class RenderGuidance17(RenderGuidance):
+    pass
+
+
+class Jurisdiction18(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance17 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure18(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction18] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem17(VerificationItem):
+    pass
+
+
+class Provenance18(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy17 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure18 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem17] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance18 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy18(DeclaredBy):
+    pass
+
+
+class RenderGuidance18(RenderGuidance):
+    pass
+
+
+class Jurisdiction19(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance18 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure19(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction19] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem18(VerificationItem):
+    pass
+
+
+class Provenance19(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy18 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure19 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem18] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets24(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance19 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy19(DeclaredBy):
+    pass
+
+
+class RenderGuidance19(RenderGuidance):
+    pass
+
+
+class Jurisdiction20(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance19 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure20(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction20] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem19(VerificationItem):
+    pass
+
+
+class Provenance20(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy19 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure20 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem19] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets25(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance20 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy20(DeclaredBy):
+    pass
+
+
+class RenderGuidance20(RenderGuidance):
+    pass
+
+
+class Jurisdiction21(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance20 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure21(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction21] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem20(VerificationItem):
+    pass
+
+
+class Provenance21(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy20 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure21 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem20] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets26(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance21 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy21(DeclaredBy):
+    pass
+
+
+class RenderGuidance21(RenderGuidance):
+    pass
+
+
+class Jurisdiction22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance21 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction22] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem21(VerificationItem):
+    pass
+
+
+class Provenance22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy21 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure22 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem21] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets27(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance22 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy22(DeclaredBy):
+    pass
+
+
+class RenderGuidance22(RenderGuidance):
+    pass
+
+
+class Jurisdiction23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance22 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction23] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem22(VerificationItem):
+    pass
+
+
+class Provenance23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy22 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure23 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem22] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets28(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance23 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method3(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method3, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy23(DeclaredBy):
+    pass
+
+
+class RenderGuidance23(RenderGuidance):
+    pass
+
+
+class Jurisdiction24(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance23 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure24(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction24] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem23(VerificationItem):
+    pass
+
+
+class Provenance24(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy23 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure24 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem23] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets29(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance24 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy24(DeclaredBy):
+    pass
+
+
+class RenderGuidance24(RenderGuidance):
+    pass
+
+
+class Jurisdiction25(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance24 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure25(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction25] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem24(VerificationItem):
+    pass
+
+
+class Provenance25(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy24 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure25 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem24] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets30(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance25 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent6(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy25(DeclaredBy):
+    pass
+
+
+class RenderGuidance25(RenderGuidance):
+    pass
+
+
+class Jurisdiction26(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance25 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure26(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction26] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem25(VerificationItem):
+    pass
+
+
+class Provenance26(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy25 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure26 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem25] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets31(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent6] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance26 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy26(DeclaredBy):
+    pass
+
+
+class RenderGuidance26(RenderGuidance):
+    pass
+
+
+class Jurisdiction27(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance26 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure27(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction27] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem26(VerificationItem):
+    pass
+
+
+class Provenance27(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy26 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure27 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem26] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets32(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent6] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance27 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets33(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role29(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role29,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction28(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction28] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets34(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets35(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class RightsAgent(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+    id: Annotated[str, Field(description='Agent identifier')]
+
+
+class Use(Enum):
+    likeness = 'likeness'
+    voice = 'voice'
+    name = 'name'
+    endorsement = 'endorsement'
+    motion_capture = 'motion_capture'
+    signature = 'signature'
+    catchphrase = 'catchphrase'
+    sync = 'sync'
+    background_music = 'background_music'
+    editorial = 'editorial'
+    commercial = 'commercial'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ExcludedCountry(Country):
+    pass
+
+
+class RightType(Enum):
+    talent = 'talent'
+    character = 'character'
+    brand_ip = 'brand_ip'
+    music = 'music'
+    stock_media = 'stock_media'
+
+
+class ApprovalStatus(Enum):
+    pending = 'pending'
+    approved = 'approved'
+    rejected = 'rejected'
+
+
+class Right(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from the acquire_rights response')
+    ]
+    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
+    valid_from: Annotated[
+        AwareDatetime | None, Field(description='Start of the rights validity period')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='End of the rights validity period. Creative should not be served after this time.'
+        ),
+    ] = None
+    uses: Annotated[
+        list[Use], Field(description='Rights uses covered by this constraint', min_length=1)
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='Countries where this creative may be served under these rights (ISO 3166-1 alpha-2). If omitted, no country restriction. When both countries and excluded_countries are present, the effective set is countries minus excluded_countries.'
+        ),
+    ] = None
+    excluded_countries: Annotated[
+        list[ExcludedCountry] | None,
+        Field(
+            description='Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.'
+        ),
+    ] = None
+    impression_cap: Annotated[
+        int | None,
+        Field(
+            description='Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.',
+            ge=1,
+        ),
+    ] = None
+    right_type: Annotated[
+        RightType | None,
+        Field(
+            description='Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.',
+            title='Right Type',
+        ),
+    ] = None
+    approval_status: Annotated[
+        ApprovalStatus | None,
+        Field(
+            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
+        ),
+    ] = None
+    verification_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Type6(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type6,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy27(DeclaredBy):
+    pass
+
+
+class RenderGuidance27(RenderGuidance):
+    pass
+
+
+class Jurisdiction29(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance27 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure28(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction29] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem27(VerificationItem):
+    pass
+
+
+class Provenance28(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy27 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure28 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem27] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class CreativeManifest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets21
+            | Assets22
+            | Assets23
+            | Assets24
+            | Assets25
+            | Assets26
+            | Assets27
+            | Assets28
+            | Assets29
+            | Assets30
+            | Assets31
+            | Assets32
+            | Assets33
+            | Assets34
+            | Assets35,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance28 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Dimensions(AdCPBaseModel):
+    width: Annotated[float, Field(ge=0.0)]
+    height: Annotated[float, Field(ge=0.0)]
+
+
+class Embedding(AdCPBaseModel):
+    recommended_sandbox: Annotated[
+        str | None,
+        Field(
+            description="Recommended iframe sandbox attribute value (e.g., 'allow-scripts allow-same-origin')"
+        ),
+    ] = None
+    requires_https: Annotated[
+        bool | None, Field(description='Whether this output requires HTTPS for secure embedding')
+    ] = None
+    supports_fullscreen: Annotated[
+        bool | None, Field(description='Whether this output supports fullscreen mode')
+    ] = None
+    csp_policy: Annotated[
+        str | None, Field(description='Content Security Policy requirements for embedding')
+    ] = None
+
+
+class Renders(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
+    output_format: Annotated[
+        Literal['url'], Field(description='Discriminator indicating preview_url is provided')
+    ]
+    preview_url: Annotated[
+        AnyUrl,
+        Field(
+            description='URL to an HTML page that renders this piece. Can be embedded in an iframe.'
+        ),
+    ]
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None,
+        Field(description='Optional security and embedding metadata for safe iframe integration'),
+    ] = None
+
+
+class Renders1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
+    output_format: Annotated[
+        Literal['html'], Field(description='Discriminator indicating preview_html is provided')
+    ]
+    preview_html: Annotated[
+        str,
+        Field(
+            description='Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.'
+        ),
+    ]
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None, Field(description='Optional security and embedding metadata')
+    ] = None
+
+
+class Renders2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
+    output_format: Annotated[
+        Literal['both'],
+        Field(
+            description='Discriminator indicating both preview_url and preview_html are provided'
+        ),
+    ]
+    preview_url: Annotated[
+        AnyUrl,
+        Field(
+            description='URL to an HTML page that renders this piece. Can be embedded in an iframe.'
+        ),
+    ]
+    preview_html: Annotated[
+        str,
+        Field(
+            description='Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.'
+        ),
+    ]
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None,
+        Field(description='Optional security and embedding metadata for safe iframe integration'),
+    ] = None
+
+
+class Input(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this variant')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values applied to this variant')
+    ] = None
+    context_description: Annotated[
+        str | None, Field(description='Context description applied to this variant')
+    ] = None
+
+
+class Preview(AdCPBaseModel):
+    preview_id: Annotated[str, Field(description='Unique identifier for this preview variant')]
+    renders: Annotated[
+        list[Renders | Renders1 | Renders2],
+        Field(
+            description='Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats render as multiple pieces.',
+            min_length=1,
+        ),
+    ]
+    input: Annotated[
+        Input,
+        Field(
+            description='The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.'
+        ),
+    ]
+
+
+class Preview4(AdCPBaseModel):
+    previews: Annotated[
+        list[Preview],
+        Field(
+            description='Array of preview variants. Each preview corresponds to an input set from preview_inputs, or a single default preview if no inputs were provided.',
+            min_length=1,
+        ),
+    ]
+    interactive_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL to an interactive testing page that shows all preview variants with controls to switch between them.'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime,
+        Field(
+            description="ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
+        ),
+    ]
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class PreviewError(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Consumption(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    tokens: Annotated[
+        int | None,
+        Field(description='LLM or generation tokens consumed during creative generation.', ge=0),
+    ] = None
+    images_generated: Annotated[
+        int | None, Field(description='Number of images produced during generation.', ge=0)
+    ] = None
+    renders: Annotated[
+        int | None, Field(description='Number of render passes performed (video, animation).', ge=0)
+    ] = None
+    duration_seconds: Annotated[
+        float | None,
+        Field(
+            description='Processing time billed, in seconds. For compute-time pricing models.',
+            ge=0.0,
+        ),
+    ] = None
+
+
+class BuildCreativeResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_manifest: Annotated[
+        CreativeManifest,
+        Field(
+            description='The generated or transformed creative manifest', title='Creative Manifest'
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when generated asset URLs in the manifest expire. Set to the earliest expiration across all generated assets. Re-build the creative after this time to get fresh URLs.'
+        ),
+    ] = None
+    preview: Annotated[
+        Preview4 | None,
+        Field(
+            description='Preview renders included when the request set include_preview to true and the agent supports it. Contains the same content fields as a preview_creative single response (previews, interactive_url, expires_at) minus the response_type discriminator, so clients can reuse the same preview rendering logic.'
+        ),
+    ] = None
+    preview_error: Annotated[
+        PreviewError | None,
+        Field(
+            description="When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Distinguishes 'agent does not support inline preview' (preview and preview_error both absent) from 'preview generation failed' (preview absent, preview_error present). Omitted when preview succeeded or was not requested.",
+            title='Error',
+        ),
+    ] = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description='Which rate card pricing option was applied for this build. Present when the creative agent charges for its services. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ] = None
+    vendor_cost: Annotated[
+        float | None,
+        Field(
+            description='Cost incurred for this build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time rather than build time.',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str | None,
+        Field(description='ISO 4217 currency code for vendor_cost.', pattern='^[A-Z]{3}$'),
+    ] = None
+    consumption: Annotated[
+        Consumption | None,
+        Field(
+            description='Structured consumption details for this build. Informational — lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth.',
+            title='Creative Consumption',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class DeclaredBy28(DeclaredBy):
+    pass
+
+
+class RenderGuidance28(RenderGuidance):
+    pass
+
+
+class Jurisdiction30(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance28 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure29(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction30] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem28(VerificationItem):
+    pass
+
+
+class Provenance29(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy28 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure29 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem28] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets36(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance29 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy29(DeclaredBy):
+    pass
+
+
+class RenderGuidance29(RenderGuidance):
+    pass
+
+
+class Jurisdiction31(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance29 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure30(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction31] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem29(VerificationItem):
+    pass
+
+
+class Provenance30(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy29 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure30 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem29] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets37(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance30 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy30(DeclaredBy):
+    pass
+
+
+class RenderGuidance30(RenderGuidance):
+    pass
+
+
+class Jurisdiction32(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance30 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure31(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction32] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem30(VerificationItem):
+    pass
+
+
+class Provenance31(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy30 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure31 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem30] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets38(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance31 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy31(DeclaredBy):
+    pass
+
+
+class RenderGuidance31(RenderGuidance):
+    pass
+
+
+class Jurisdiction33(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance31 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure32(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction33] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem31(VerificationItem):
+    pass
+
+
+class Provenance32(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy31 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure32 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem31] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets39(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance32 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy32(DeclaredBy):
+    pass
+
+
+class RenderGuidance32(RenderGuidance):
+    pass
+
+
+class Jurisdiction34(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance32 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure33(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction34] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem32(VerificationItem):
+    pass
+
+
+class Provenance33(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy32 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure33 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem32] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets40(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance33 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy33(DeclaredBy):
+    pass
+
+
+class RenderGuidance33(RenderGuidance):
+    pass
+
+
+class Jurisdiction35(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance33 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure34(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction35] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem33(VerificationItem):
+    pass
+
+
+class Provenance34(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy33 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure34 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem33] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets41(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance34 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy34(DeclaredBy):
+    pass
+
+
+class RenderGuidance34(RenderGuidance):
+    pass
+
+
+class Jurisdiction36(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance34 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure35(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction36] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem34(VerificationItem):
+    pass
+
+
+class Provenance35(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy34 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure35 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem34] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets42(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance35 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy35(DeclaredBy):
+    pass
+
+
+class RenderGuidance35(RenderGuidance):
+    pass
+
+
+class Jurisdiction37(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance35 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure36(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction37] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem35(VerificationItem):
+    pass
+
+
+class Provenance36(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy35 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure36 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem35] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets43(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance36 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy36(DeclaredBy):
+    pass
+
+
+class RenderGuidance36(RenderGuidance):
+    pass
+
+
+class Jurisdiction38(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance36 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure37(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction38] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem36(VerificationItem):
+    pass
+
+
+class Provenance37(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy36 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure37 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem36] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets44(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance37 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Security2(Security):
+    pass
+
+
+class DeclaredBy37(DeclaredBy):
+    pass
+
+
+class RenderGuidance37(RenderGuidance):
+    pass
+
+
+class Jurisdiction39(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance37 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure38(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction39] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem37(VerificationItem):
+    pass
+
+
+class Provenance38(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy37 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure38 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem37] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets45(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security2, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance38 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy38(DeclaredBy):
+    pass
+
+
+class RenderGuidance38(RenderGuidance):
+    pass
+
+
+class Jurisdiction40(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance38 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure39(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction40] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem38(VerificationItem):
+    pass
+
+
+class Provenance39(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy38 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure39 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem38] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets46(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance39 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy39(DeclaredBy):
+    pass
+
+
+class RenderGuidance39(RenderGuidance):
+    pass
+
+
+class Jurisdiction41(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance39 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure40(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction41] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem39(VerificationItem):
+    pass
+
+
+class Provenance40(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy39 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure40 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem39] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets47(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent6] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance40 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy40(DeclaredBy):
+    pass
+
+
+class RenderGuidance40(RenderGuidance):
+    pass
+
+
+class Jurisdiction42(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance40 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure41(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction42] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem40(VerificationItem):
+    pass
+
+
+class Provenance41(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy40 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure41 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem40] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets48(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent6] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance41 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets49(Assets33):
+    pass
+
+
+class ReferenceAsset2(ReferenceAsset):
+    pass
+
+
+class Jurisdiction43(Jurisdiction28):
+    pass
+
+
+class RequiredDisclosure2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction43] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure2] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets50(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset2] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance2 | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class FeedFieldMapping2(FeedFieldMapping):
+    pass
+
+
+class Assets51(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping2] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Right2(Right):
+    pass
+
+
+class IndustryIdentifier2(IndustryIdentifier):
+    pass
+
+
+class DeclaredBy41(DeclaredBy):
+    pass
+
+
+class RenderGuidance41(RenderGuidance):
+    pass
+
+
+class Jurisdiction44(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance41 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure42(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction44] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem41(VerificationItem):
+    pass
+
+
+class Provenance42(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy41 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure42 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem41] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class CreativeManifest3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'}).",
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets36
+            | Assets37
+            | Assets38
+            | Assets39
+            | Assets40
+            | Assets41
+            | Assets42
+            | Assets43
+            | Assets44
+            | Assets45
+            | Assets46
+            | Assets47
+            | Assets48
+            | Assets49
+            | Assets50
+            | Assets51,
+        ],
+        Field(
+            description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
+        ),
+    ]
+    rights: Annotated[
+        list[Right2] | None,
+        Field(
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier2] | None,
+        Field(
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance42 | None,
+        Field(
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Renders3(Renders):
+    pass
+
+
+class Renders4(Renders1):
+    pass
+
+
+class Renders5(Renders2):
+    pass
+
+
+class Input3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this preview')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values applied to this preview')
+    ] = None
+    context_description: Annotated[
+        str | None, Field(description='Context description applied to this preview')
+    ] = None
+
+
+class Preview7(AdCPBaseModel):
+    preview_id: Annotated[str, Field(description='Unique identifier for this preview')]
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='The format this preview was generated for. Matches one of the requested target_format_ids.',
+            title='Format ID',
+        ),
+    ]
+    renders: Annotated[
+        list[Renders3 | Renders4 | Renders5],
+        Field(
+            description="Array of rendered pieces for this format's preview. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
+            min_length=1,
+        ),
+    ]
+    input: Annotated[
+        Input3,
+        Field(
+            description='The input parameters that generated this preview. For multi-format responses, this is always a default input.'
+        ),
+    ]
+
+
+class Preview6(AdCPBaseModel):
+    previews: Annotated[
+        list[Preview7],
+        Field(
+            description='Array of preview entries, one per requested format. Array order matches creative_manifests. Each entry includes a format_id for explicit correlation.',
+            min_length=1,
+        ),
+    ]
+    interactive_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL to an interactive testing page that shows all format previews with controls to switch between them.'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime,
+        Field(
+            description="ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
+        ),
+    ]
+
+
+class PreviewError1(PreviewError):
+    pass
+
+
+class BuildCreativeResponse5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_manifests: Annotated[
+        list[CreativeManifest3],
+        Field(
+            description='Array of generated creative manifests, one per requested format. Each manifest contains its own format_id identifying which format it was generated for.',
+            min_length=1,
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when the earliest generated asset URL expires across all manifests. Re-build after this time to get fresh URLs.'
+        ),
+    ] = None
+    preview: Annotated[
+        Preview6 | None,
+        Field(
+            description='Preview renders included when the request set include_preview to true and the agent supports it. Contains one default preview per requested format. preview_inputs is ignored for multi-format requests.'
+        ),
+    ] = None
+    preview_error: Annotated[
+        PreviewError1 | None,
+        Field(
+            description='When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Omitted when preview succeeded or was not requested.',
+            title='Error',
+        ),
+    ] = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description='Which rate card pricing option was applied for this build. Represents the total cost of the entire multi-format build call. Present when the creative agent charges for its services.'
+        ),
+    ] = None
+    vendor_cost: Annotated[
+        float | None,
+        Field(
+            description='Total cost incurred for this multi-format build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time.',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str | None,
+        Field(description='ISO 4217 currency code for vendor_cost.', pattern='^[A-Z]{3}$'),
+    ] = None
+    consumption: Annotated[
+        Consumption | None,
+        Field(
+            description='Structured consumption details for this build. Informational — lets the buyer verify that vendor_cost is consistent with the rate card.',
+            title='Creative Consumption',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Error(PreviewError):
+    pass
+
+
+class BuildCreativeResponse6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error],
+        Field(
+            description='Array of errors explaining why creative generation failed', min_length=1
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+BuildCreativeResponse = BuildCreativeResponse4 | BuildCreativeResponse5 | BuildCreativeResponse6
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/create_media_buy_request.py b/src/adcp/types/generated_poc/bundled/media_buy/create_media_buy_request.py
new file mode 100644
index 000000000..c872b34f2
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/create_media_buy_request.py
@@ -0,0 +1,5470 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/create_media_buy_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel, StringConstraints
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class TotalBudget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    amount: Annotated[float, Field(description='Total budget amount', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code')]
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Pacing(Enum):
+    even = 'even'
+    asap = 'asap'
+    front_loaded = 'front_loaded'
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Metric(Enum):
+    clicks = 'clicks'
+    views = 'views'
+    completed_views = 'completed_views'
+    viewed_seconds = 'viewed_seconds'
+    attention_seconds = 'attention_seconds'
+    attention_score = 'attention_score'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    reach = 'reach'
+
+
+class ReachUnit(AdCPBaseModel):
+    pass
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class Window(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class TargetFrequency(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ]
+    max: Annotated[
+        int | None,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ] = None
+    window: Annotated[
+        Window,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Window1(Window):
+    pass
+
+
+class TargetFrequency1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int | None,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ] = None
+    max: Annotated[
+        int,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ]
+    window: Annotated[
+        Window1,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Target(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[
+        float, Field(description='Target cost per metric unit in the buy currency', gt=0.0)
+    ]
+
+
+class Target1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['threshold_rate']
+    value: Annotated[
+        float,
+        Field(
+            description='Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).',
+            gt=0.0,
+        ),
+    ]
+
+
+class OptimizationGoals(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['metric']
+    metric: Annotated[
+        Metric,
+        Field(
+            description="Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions — see view_duration_seconds), reach (unique audience reach — see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing — social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins — signals of intent to return), profile_visits (visits to the brand's in-platform page — profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+        ),
+    ]
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description="Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+        ),
+    ] = None
+    target_frequency: Annotated[
+        TargetFrequency | TargetFrequency1 | None,
+        Field(
+            description="Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed."
+        ),
+    ] = None
+    view_duration_seconds: Annotated[
+        float | None,
+        Field(
+            description="Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2–15 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values — silent rounding would create measurement discrepancies.",
+            gt=0.0,
+        ),
+    ] = None
+    target: Annotated[
+        Target | Target1 | None,
+        Field(
+            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class EventSource(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_source_id: Annotated[
+        str,
+        Field(
+            description='Event source to include (must be configured on this account via sync_event_sources)',
+            min_length=1,
+        ),
+    ]
+    event_type: Annotated[
+        ConversionEvent,
+        Field(
+            description='Event type to include from this source (e.g., purchase, lead, app_install, refund)',
+            title='Event Type',
+        ),
+    ]
+    custom_event_name: Annotated[
+        str | None,
+        Field(
+            description="Required when event_type is 'custom'. Platform-specific name for the custom event."
+        ),
+    ] = None
+    value_field: Annotated[
+        str | None,
+        Field(
+            description="Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' — sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs — the seller maps it to their platform's value ingestion mechanism."
+        ),
+    ] = None
+    value_factor: Annotated[
+        float | None,
+        Field(
+            description="Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs — the seller applies it when computing aggregated value metrics."
+        ),
+    ] = 1
+
+
+class Target2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[float, Field(description='Target cost per event in the buy currency', gt=0.0)]
+
+
+class Target3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['per_ad_spend']
+    value: Annotated[
+        float,
+        Field(description='Target return ratio (e.g., 4.0 means $4 of value per $1 spent)', gt=0.0),
+    ]
+
+
+class Target4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['maximize_value']
+
+
+class PostClick(Window):
+    pass
+
+
+class PostView(Window):
+    pass
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick,
+        Field(
+            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
+        ),
+    ]
+    post_view: Annotated[
+        PostView | None,
+        Field(
+            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
+        ),
+    ] = None
+
+
+class OptimizationGoals1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['event']
+    event_sources: Annotated[
+        list[EventSource],
+        Field(
+            description='Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries — the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.',
+            min_length=1,
+        ),
+    ]
+    target: Annotated[
+        Target2 | Target3 | Target4 | None,
+        Field(
+            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget — regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.'
+        ),
+    ] = None
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class GeoCountry(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class GeoCountriesExcludeItem(GeoCountry):
+    pass
+
+
+class GeoRegion(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+
+
+class GeoRegionsExcludeItem(GeoRegion):
+    pass
+
+
+class System(Enum):
+    nielsen_dma = 'nielsen_dma'
+    uk_itl1 = 'uk_itl1'
+    uk_itl2 = 'uk_itl2'
+    eurostat_nuts2 = 'eurostat_nuts2'
+    custom = 'custom'
+
+
+class GeoMetro(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoMetrosExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class System2(Enum):
+    us_zip = 'us_zip'
+    us_zip_plus_four = 'us_zip_plus_four'
+    gb_outward = 'gb_outward'
+    gb_full = 'gb_full'
+    ca_fsa = 'ca_fsa'
+    ca_full = 'ca_full'
+    de_plz = 'de_plz'
+    fr_code_postal = 'fr_code_postal'
+    au_postcode = 'au_postcode'
+    ch_plz = 'ch_plz'
+    at_plz = 'at_plz'
+
+
+class GeoPostalArea(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System2,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoPostalAreasExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System2,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class Day(Enum):
+    monday = 'monday'
+    tuesday = 'tuesday'
+    wednesday = 'wednesday'
+    thursday = 'thursday'
+    friday = 'friday'
+    saturday = 'saturday'
+    sunday = 'sunday'
+
+
+class DaypartTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    days: Annotated[
+        list[Day],
+        Field(
+            description='Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).',
+            min_length=1,
+        ),
+    ]
+    start_hour: Annotated[
+        int,
+        Field(
+            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
+            ge=0,
+            le=23,
+        ),
+    ]
+    end_hour: Annotated[
+        int,
+        Field(
+            description='End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.',
+            ge=1,
+            le=24,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+        ),
+    ] = None
+
+
+class Suppress(Window):
+    pass
+
+
+class Per(ReachUnit):
+    pass
+
+
+class Window2(Window):
+    pass
+
+
+class FrequencyCap(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ]
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window2 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress1(Window):
+    pass
+
+
+class Window3(Window):
+    pass
+
+
+class FrequencyCap1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress1 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ]
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window3 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress2(Window):
+    pass
+
+
+class Window4(Window):
+    pass
+
+
+class FrequencyCap2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress2 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ]
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window4 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class PropertyList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the property list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the property list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the collection list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the collection list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionListExclude(CollectionList):
+    pass
+
+
+class AcceptedMethod(Enum):
+    facial_age_estimation = 'facial_age_estimation'
+    id_document = 'id_document'
+    digital_id = 'digital_id'
+    credit_card = 'credit_card'
+    world_id = 'world_id'
+
+
+class AgeRestriction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[int, Field(description='Minimum age required', ge=13, le=99)]
+    verification_required: Annotated[
+        bool | None,
+        Field(description='Whether verified age (not inferred) is required for compliance'),
+    ] = False
+    accepted_methods: Annotated[
+        list[AcceptedMethod] | None,
+        Field(
+            description='Accepted verification methods. If omitted, any method the platform supports is acceptable.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class DevicePlatformEnum(Enum):
+    ios = 'ios'
+    android = 'android'
+    windows = 'windows'
+    macos = 'macos'
+    linux = 'linux'
+    chromeos = 'chromeos'
+    tvos = 'tvos'
+    tizen = 'tizen'
+    webos = 'webos'
+    fire_os = 'fire_os'
+    roku_os = 'roku_os'
+    unknown = 'unknown'
+
+
+class DeviceTypeEnum(Enum):
+    desktop = 'desktop'
+    mobile = 'mobile'
+    tablet = 'tablet'
+    ctv = 'ctv'
+    dooh = 'dooh'
+    unknown = 'unknown'
+
+
+class StoreCatchment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str, Field(description='Synced store-type catalog ID from sync_catalogs.')
+    ]
+    store_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific stores within the catalog. Omit to target all stores.',
+            min_length=1,
+        ),
+    ] = None
+    catchment_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Unit11(Enum):
+    min = 'min'
+    hr = 'hr'
+
+
+class TravelTime(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
+    unit: Annotated[Unit11, Field(description='Time unit.')]
+
+
+class TransportMode(Enum):
+    walking = 'walking'
+    cycling = 'cycling'
+    driving = 'driving'
+    public_transport = 'public_transport'
+
+
+class Unit12(Enum):
+    km = 'km'
+    mi = 'mi'
+    m = 'm'
+
+
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    unit: Annotated[Unit12, Field(description='Distance unit.', title='Distance Unit')]
+
+
+class Type13(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
+
+
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type13, Field(description='GeoJSON geometry type.')]
+    coordinates: Annotated[
+        list[Any],
+        Field(
+            description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
+        ),
+    ]
+
+
+class GeoProximity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ]
+    transport_mode: Annotated[
+        TransportMode,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ]
+    radius: Annotated[
+        Radius | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime2(TravelTime):
+    pass
+
+
+class Radius2(Radius):
+    pass
+
+
+class Geometry2(Geometry):
+    pass
+
+
+class GeoProximity1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime2 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius2,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ]
+    geometry: Annotated[
+        Geometry2 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime3(TravelTime):
+    pass
+
+
+class Radius3(Radius):
+    pass
+
+
+class Geometry3(Geometry):
+    pass
+
+
+class GeoProximity2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float | None,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ] = None
+    lng: Annotated[
+        float | None,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime3 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius3 | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry3,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class LanguageItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z]{2}$')]
+
+
+class MatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class KeywordTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[
+        MatchType,
+        Field(
+            description='Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly'
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class NegativeKeyword(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to exclude', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type for exclusion')]
+
+
+class TargetingOverlay(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo_countries: Annotated[
+        list[GeoCountry] | None,
+        Field(
+            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_countries_exclude: Annotated[
+        list[GeoCountriesExcludeItem] | None,
+        Field(
+            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions: Annotated[
+        list[GeoRegion] | None,
+        Field(
+            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions_exclude: Annotated[
+        list[GeoRegionsExcludeItem] | None,
+        Field(
+            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_metros: Annotated[
+        list[GeoMetro] | None,
+        Field(
+            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_metros_exclude: Annotated[
+        list[GeoMetrosExcludeItem] | None,
+        Field(
+            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas: Annotated[
+        list[GeoPostalArea] | None,
+        Field(
+            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas_exclude: Annotated[
+        list[GeoPostalAreasExcludeItem] | None,
+        Field(
+            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    daypart_targets: Annotated[
+        list[DaypartTarget] | None,
+        Field(
+            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
+            min_length=1,
+        ),
+    ] = None
+    axe_include_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
+        ),
+    ] = None
+    axe_exclude_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
+        ),
+    ] = None
+    audience_include: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    audience_exclude: Annotated[
+        list[str] | None,
+        Field(
+            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    frequency_cap: Annotated[
+        FrequencyCap | FrequencyCap1 | FrequencyCap2 | None,
+        Field(
+            description='Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.',
+            title='Frequency Cap',
+        ),
+    ] = None
+    property_list: Annotated[
+        PropertyList | None,
+        Field(
+            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+            title='Property List Reference',
+        ),
+    ] = None
+    collection_list: Annotated[
+        CollectionList | None,
+        Field(
+            description='Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.',
+            title='Collection List Reference',
+        ),
+    ] = None
+    collection_list_exclude: Annotated[
+        CollectionListExclude | None,
+        Field(
+            description="Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+            title='Collection List Reference',
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(
+            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        list[DevicePlatformEnum] | None,
+        Field(
+            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
+            min_length=1,
+        ),
+    ] = None
+    device_type: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    device_type_exclude: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    store_catchments: Annotated[
+        list[StoreCatchment] | None,
+        Field(
+            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
+            min_length=1,
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity1 | GeoProximity2] | None,
+        Field(
+            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    language: Annotated[
+        list[LanguageItem] | None,
+        Field(
+            description="Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+            min_length=1,
+        ),
+    ] = None
+    keyword_targets: Annotated[
+        list[KeywordTarget] | None,
+        Field(
+            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords: Annotated[
+        list[NegativeKeyword] | None,
+        Field(
+            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Vendor(Brand):
+    pass
+
+
+class BillingMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    max_variance_percent: Annotated[
+        float | None,
+        Field(
+            description="Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review).",
+            ge=0.0,
+            lt=100.0,
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=[
+                'live',
+                'c3',
+                'c7',
+                'tentative',
+                'final',
+                'post_ivt',
+                'post_sivt',
+                'downloads_30d',
+            ],
+        ),
+    ] = None
+
+
+class AvailableRemedy(Enum):
+    additional_delivery = 'additional_delivery'
+    credit = 'credit'
+    invoice_adjustment = 'invoice_adjustment'
+
+
+class MakegoodPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_remedies: Annotated[
+        list[AvailableRemedy],
+        Field(
+            description='Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.',
+            min_length=1,
+        ),
+    ]
+
+
+class MeasurementTerms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    billing_measurement: Annotated[
+        BillingMeasurement | None,
+        Field(
+            description="Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV)."
+        ),
+    ] = None
+    makegood_policy: Annotated[
+        MakegoodPolicy | None,
+        Field(
+            description='Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.'
+        ),
+    ] = None
+
+
+class Metric1(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class PerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        Metric1,
+        Field(
+            description='The performance metric this standard applies to.',
+            title='Performance Standard Metric',
+        ),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            title='Viewability Standard',
+        ),
+    ] = None
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+
+
+class CreativeAssignment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Relative delivery weight for this creative (0–100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally — a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy58(DeclaredBy):
+    pass
+
+
+class RenderGuidance58(RenderGuidance):
+    pass
+
+
+class Jurisdiction61(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance58 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure59(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction61] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem58(VerificationItem):
+    pass
+
+
+class Provenance59(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy58 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure59 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem58] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets65(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance59 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy59(DeclaredBy):
+    pass
+
+
+class RenderGuidance59(RenderGuidance):
+    pass
+
+
+class Jurisdiction62(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance59 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure60(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction62] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem59(VerificationItem):
+    pass
+
+
+class Provenance60(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy59 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure60 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem59] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets66(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance60 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy60(DeclaredBy):
+    pass
+
+
+class RenderGuidance60(RenderGuidance):
+    pass
+
+
+class Jurisdiction63(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance60 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure61(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction63] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem60(VerificationItem):
+    pass
+
+
+class Provenance61(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy60 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure61 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem60] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets67(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance61 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy61(DeclaredBy):
+    pass
+
+
+class RenderGuidance61(RenderGuidance):
+    pass
+
+
+class Jurisdiction64(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance61 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure62(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction64] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem61(VerificationItem):
+    pass
+
+
+class Provenance62(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy61 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure62 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem61] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets68(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance62 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy62(DeclaredBy):
+    pass
+
+
+class RenderGuidance62(RenderGuidance):
+    pass
+
+
+class Jurisdiction65(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance62 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure63(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction65] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem62(VerificationItem):
+    pass
+
+
+class Provenance63(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy62 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure63 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem62] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets69(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance63 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy63(DeclaredBy):
+    pass
+
+
+class RenderGuidance63(RenderGuidance):
+    pass
+
+
+class Jurisdiction66(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance63 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure64(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction66] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem63(VerificationItem):
+    pass
+
+
+class Provenance64(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy63 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure64 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem63] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets70(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance64 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy64(DeclaredBy):
+    pass
+
+
+class RenderGuidance64(RenderGuidance):
+    pass
+
+
+class Jurisdiction67(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance64 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure65(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction67] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem64(VerificationItem):
+    pass
+
+
+class Provenance65(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy64 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure65 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem64] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets71(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance65 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy65(DeclaredBy):
+    pass
+
+
+class RenderGuidance65(RenderGuidance):
+    pass
+
+
+class Jurisdiction68(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance65 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure66(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction68] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem65(VerificationItem):
+    pass
+
+
+class Provenance66(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy65 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure66 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem65] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets72(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance66 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method7(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method7, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy66(DeclaredBy):
+    pass
+
+
+class RenderGuidance66(RenderGuidance):
+    pass
+
+
+class Jurisdiction69(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance66 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure67(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction69] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem66(VerificationItem):
+    pass
+
+
+class Provenance67(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy66 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure67 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem66] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets73(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance67 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy67(DeclaredBy):
+    pass
+
+
+class RenderGuidance67(RenderGuidance):
+    pass
+
+
+class Jurisdiction70(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance67 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure68(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction70] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem67(VerificationItem):
+    pass
+
+
+class Provenance68(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy67 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure68 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem67] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets74(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance68 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent14(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy68(DeclaredBy):
+    pass
+
+
+class RenderGuidance68(RenderGuidance):
+    pass
+
+
+class Jurisdiction71(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance68 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure69(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction71] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem68(VerificationItem):
+    pass
+
+
+class Provenance69(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy68 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure69 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem68] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets75(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent14] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance69 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy69(DeclaredBy):
+    pass
+
+
+class RenderGuidance69(RenderGuidance):
+    pass
+
+
+class Jurisdiction72(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance69 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure70(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction72] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem69(VerificationItem):
+    pass
+
+
+class Provenance70(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy69 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure70 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem69] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets76(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent14] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance70 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets77(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role78(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role78,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction73(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction73] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets78(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class FeedFieldMapping4(FeedFieldMapping):
+    pass
+
+
+class Assets79(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping4] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Input(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this preview variant')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to apply for this preview')
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(description='Natural language description of the context for AI-generated content'),
+    ] = None
+
+
+class Status(Enum):
+    processing = 'processing'
+    pending_review = 'pending_review'
+    approved = 'approved'
+    rejected = 'rejected'
+    archived = 'archived'
+
+
+class Type17(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type17,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy70(DeclaredBy):
+    pass
+
+
+class RenderGuidance70(RenderGuidance):
+    pass
+
+
+class Jurisdiction74(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance70 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure71(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction74] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem70(VerificationItem):
+    pass
+
+
+class Provenance71(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy70 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure71 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem70] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.',
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets65
+            | Assets66
+            | Assets67
+            | Assets68
+            | Assets69
+            | Assets70
+            | Assets71
+            | Assets72
+            | Assets73
+            | Assets74
+            | Assets75
+            | Assets76
+            | Assets77
+            | Assets78
+            | Assets79,
+        ],
+        Field(description='Assets required by the format, keyed by asset_id'),
+    ]
+    inputs: Annotated[
+        list[Input] | None,
+        Field(
+            description='Preview contexts for generative formats - defines what scenarios to generate previews for'
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
+    ] = None
+    status: Annotated[
+        Status | None,
+        Field(
+            description="For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+            title='Creative Status',
+        ),
+    ] = None
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            min_length=1,
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance71 | None,
+        Field(
+            description='Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Package(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    product_id: Annotated[str, Field(description='Product ID for this package')]
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.',
+            min_length=1,
+        ),
+    ] = None
+    budget: Annotated[
+        float,
+        Field(description="Budget allocation for this package in the media buy's currency", ge=0.0),
+    ]
+    pacing: Annotated[
+        Pacing | None, Field(description='Budget pacing strategy', title='Pacing')
+    ] = None
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description="ID of the selected pricing option from the product's pricing_options array"
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            ge=0.0,
+        ),
+    ] = None
+    impressions: Annotated[
+        float | None, Field(description='Impression goal for this package', ge=0.0)
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.'
+        ),
+    ] = False
+    catalogs: Annotated[
+        list[Catalog] | None,
+        Field(
+            description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.'
+        ),
+    ] = None
+    optimization_goals: Annotated[
+        list[OptimizationGoals | OptimizationGoals1] | None,
+        Field(
+            description='Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.',
+            min_length=1,
+        ),
+    ] = None
+    targeting_overlay: Annotated[
+        TargetingOverlay | None,
+        Field(
+            description='Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).',
+            title='Targeting Overlay',
+        ),
+    ] = None
+    measurement_terms: Annotated[
+        MeasurementTerms | None,
+        Field(
+            description="Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply.",
+            title='Measurement Terms',
+        ),
+    ] = None
+    performance_standards: Annotated[
+        list[PerformanceStandard] | None,
+        Field(
+            description="Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+            min_length=1,
+        ),
+    ] = None
+    creative_assignments: Annotated[
+        list[CreativeAssignment] | None,
+        Field(
+            description='Assign existing library creatives to this package with optional weights and placement targeting',
+            min_length=1,
+        ),
+    ] = None
+    creatives: Annotated[
+        list[Creative] | None,
+        Field(
+            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
+            max_length=100,
+            min_length=1,
+        ),
+    ] = None
+    agency_estimate_number: Annotated[
+        str | None,
+        Field(
+            description='Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy).',
+            max_length=100,
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class AdvertiserIndustry(Enum):
+    automotive = 'automotive'
+    automotive_electric_vehicles = 'automotive.electric_vehicles'
+    automotive_parts_accessories = 'automotive.parts_accessories'
+    automotive_luxury = 'automotive.luxury'
+    beauty_cosmetics = 'beauty_cosmetics'
+    beauty_cosmetics_skincare = 'beauty_cosmetics.skincare'
+    beauty_cosmetics_fragrance = 'beauty_cosmetics.fragrance'
+    beauty_cosmetics_haircare = 'beauty_cosmetics.haircare'
+    cannabis = 'cannabis'
+    cpg = 'cpg'
+    cpg_personal_care = 'cpg.personal_care'
+    cpg_household = 'cpg.household'
+    dating = 'dating'
+    education = 'education'
+    education_higher_education = 'education.higher_education'
+    education_online_learning = 'education.online_learning'
+    education_k12 = 'education.k12'
+    energy_utilities = 'energy_utilities'
+    energy_utilities_renewable = 'energy_utilities.renewable'
+    fashion_apparel = 'fashion_apparel'
+    fashion_apparel_luxury = 'fashion_apparel.luxury'
+    fashion_apparel_sportswear = 'fashion_apparel.sportswear'
+    finance = 'finance'
+    finance_banking = 'finance.banking'
+    finance_insurance = 'finance.insurance'
+    finance_investment = 'finance.investment'
+    finance_cryptocurrency = 'finance.cryptocurrency'
+    food_beverage = 'food_beverage'
+    food_beverage_alcohol = 'food_beverage.alcohol'
+    food_beverage_restaurants = 'food_beverage.restaurants'
+    food_beverage_packaged_goods = 'food_beverage.packaged_goods'
+    gambling_betting = 'gambling_betting'
+    gambling_betting_sports_betting = 'gambling_betting.sports_betting'
+    gambling_betting_casino = 'gambling_betting.casino'
+    gaming = 'gaming'
+    gaming_mobile = 'gaming.mobile'
+    gaming_console_pc = 'gaming.console_pc'
+    gaming_esports = 'gaming.esports'
+    government_nonprofit = 'government_nonprofit'
+    government_nonprofit_political = 'government_nonprofit.political'
+    government_nonprofit_charity = 'government_nonprofit.charity'
+    healthcare = 'healthcare'
+    healthcare_pharmaceutical = 'healthcare.pharmaceutical'
+    healthcare_medical_devices = 'healthcare.medical_devices'
+    healthcare_wellness = 'healthcare.wellness'
+    home_garden = 'home_garden'
+    home_garden_furniture = 'home_garden.furniture'
+    home_garden_home_improvement = 'home_garden.home_improvement'
+    media_entertainment = 'media_entertainment'
+    media_entertainment_podcasts = 'media_entertainment.podcasts'
+    media_entertainment_music = 'media_entertainment.music'
+    media_entertainment_film_tv = 'media_entertainment.film_tv'
+    media_entertainment_publishing = 'media_entertainment.publishing'
+    media_entertainment_live_events = 'media_entertainment.live_events'
+    pets = 'pets'
+    professional_services = 'professional_services'
+    professional_services_legal = 'professional_services.legal'
+    professional_services_consulting = 'professional_services.consulting'
+    real_estate = 'real_estate'
+    real_estate_residential = 'real_estate.residential'
+    real_estate_commercial = 'real_estate.commercial'
+    recruitment_hr = 'recruitment_hr'
+    retail = 'retail'
+    retail_ecommerce = 'retail.ecommerce'
+    retail_department_stores = 'retail.department_stores'
+    sports_fitness = 'sports_fitness'
+    sports_fitness_equipment = 'sports_fitness.equipment'
+    sports_fitness_teams_leagues = 'sports_fitness.teams_leagues'
+    technology = 'technology'
+    technology_software = 'technology.software'
+    technology_hardware = 'technology.hardware'
+    technology_ai_ml = 'technology.ai_ml'
+    telecom = 'telecom'
+    telecom_mobile_carriers = 'telecom.mobile_carriers'
+    telecom_internet_providers = 'telecom.internet_providers'
+    transportation_logistics = 'transportation_logistics'
+    travel_hospitality = 'travel_hospitality'
+    travel_hospitality_airlines = 'travel_hospitality.airlines'
+    travel_hospitality_hotels = 'travel_hospitality.hotels'
+    travel_hospitality_cruise = 'travel_hospitality.cruise'
+    travel_hospitality_tourism = 'travel_hospitality.tourism'
+
+
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
+    ]
+    city: Annotated[str, Field(max_length=100)]
+    postal_code: Annotated[str, Field(max_length=20)]
+    region: Annotated[
+        str | None, Field(description='State, province, or region', max_length=100)
+    ] = None
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    ]
+
+
+class Role80(Enum):
+    billing = 'billing'
+    legal = 'legal'
+    creative = 'creative'
+    general = 'general'
+
+
+class Contact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    role: Annotated[
+        Role80, Field(description="Contact's functional role in the business relationship")
+    ]
+    name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
+        None
+    )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    phone: Annotated[str | None, Field(max_length=30)] = None
+
+
+class Bank(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
+    ] = None
+    bic: Annotated[
+        str | None,
+        Field(
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+        ),
+    ] = None
+    routing_number: Annotated[
+        str | None,
+        Field(
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
+        ),
+    ] = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class InvoiceRecipient(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class IoAcceptance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    io_id: Annotated[
+        str, Field(description="The io_id from the proposal's insertion_order being accepted")
+    ]
+    accepted_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when the IO was accepted')
+    ]
+    signatory: Annotated[
+        str,
+        Field(
+            description='Who accepted the IO — agent identifier or human name',
+            max_length=250,
+            min_length=1,
+        ),
+    ]
+    signature_id: Annotated[
+        str | None,
+        Field(
+            description='Reference to the electronic signature from the signing service, when signing_url was used'
+        ),
+    ] = None
+
+
+class Scheme(Enum):
+    Bearer = 'Bearer'
+    HMAC_SHA256 = 'HMAC-SHA256'
+
+
+class Authentication(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    schemes: Annotated[
+        list[Scheme],
+        Field(
+            description="Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+            max_length=1,
+            min_length=1,
+        ),
+    ]
+    credentials: Annotated[
+        str,
+        Field(
+            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
+            min_length=32,
+        ),
+    ]
+
+
+class PushNotificationConfig(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for task status notifications')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
+    authentication: Annotated[
+        Authentication,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
+
+
+class Authentication2(Authentication):
+    pass
+
+
+class ReportingFrequency(Enum):
+    hourly = 'hourly'
+    daily = 'daily'
+    monthly = 'monthly'
+
+
+class RequestedMetric(Enum):
+    impressions = 'impressions'
+    spend = 'spend'
+    clicks = 'clicks'
+    ctr = 'ctr'
+    video_completions = 'video_completions'
+    completion_rate = 'completion_rate'
+    conversions = 'conversions'
+    conversion_value = 'conversion_value'
+    roas = 'roas'
+    cost_per_acquisition = 'cost_per_acquisition'
+    new_to_brand_rate = 'new_to_brand_rate'
+    viewability = 'viewability'
+    engagement_rate = 'engagement_rate'
+    views = 'views'
+    completed_views = 'completed_views'
+    leads = 'leads'
+    reach = 'reach'
+    frequency = 'frequency'
+    grps = 'grps'
+    quartile_data = 'quartile_data'
+    dooh_metrics = 'dooh_metrics'
+    cost_per_click = 'cost_per_click'
+
+
+class ReportingWebhook(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for reporting notifications')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
+    authentication: Annotated[
+        Authentication2,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
+    reporting_frequency: Annotated[
+        ReportingFrequency,
+        Field(
+            description='Frequency for automated reporting delivery. Must be supported by all products in the media buy.'
+        ),
+    ]
+    requested_metrics: Annotated[
+        list[RequestedMetric] | None,
+        Field(
+            description="Optional list of metrics to include in webhook notifications. If omitted, all available metrics are included. Must be subset of product's available_metrics."
+        ),
+    ] = None
+
+
+class Authentication3(Authentication):
+    pass
+
+
+class DeliveryMode(Enum):
+    realtime = 'realtime'
+    batched = 'batched'
+
+
+class BatchFrequency(Enum):
+    hourly = 'hourly'
+    daily = 'daily'
+
+
+class ArtifactWebhook(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for artifact delivery')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
+    authentication: Annotated[
+        Authentication3,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
+    delivery_mode: Annotated[
+        DeliveryMode,
+        Field(
+            description="How artifacts are delivered. 'realtime' pushes artifacts as impressions occur. 'batched' aggregates artifacts and pushes periodically (see batch_frequency)."
+        ),
+    ]
+    batch_frequency: Annotated[
+        BatchFrequency | None,
+        Field(
+            description="For batched delivery, how often to push artifacts. Required when delivery_mode is 'batched'."
+        ),
+    ] = None
+    sampling_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of impressions to include (0-1). 1.0 = all impressions, 0.1 = 10% sample. Default: 1.0',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+
+
+class CreateMediaBuyRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. If a request with the same idempotency_key and account has already been processed, the seller returns the existing media buy rather than creating a duplicate. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    plan_id: Annotated[
+        str | None,
+        Field(
+            description='Campaign governance plan identifier. Required when the account has governance_agents. The seller includes this in the committed check_governance request so the governance agent can validate against the correct plan.'
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account6,
+        Field(
+            description='Account to bill for this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ]
+    proposal_id: Annotated[
+        str | None,
+        Field(
+            description="ID of a proposal from get_products to execute. When provided with total_budget, the publisher converts the proposal's allocation percentages into packages automatically. Alternative to providing packages array."
+        ),
+    ] = None
+    total_budget: Annotated[
+        TotalBudget | None,
+        Field(
+            description="Total budget for the media buy when executing a proposal. The publisher applies the proposal's allocation percentages to this amount to derive package budgets."
+        ),
+    ] = None
+    packages: Annotated[
+        list[Package] | None,
+        Field(
+            description="Array of package configurations. Required when not using proposal_id. When executing a proposal, this can be omitted and packages will be derived from the proposal's allocations.",
+            min_length=1,
+        ),
+    ] = None
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference for this media buy. Resolved to full brand identity at execution time from brand.json or the registry.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    advertiser_industry: Annotated[
+        AdvertiserIndustry | None,
+        Field(
+            description="Industry classification for this specific campaign. A brand may operate across multiple industries (brand.json industries field), but each media buy targets one. For example, a consumer health company running a wellness campaign sends 'healthcare.wellness', not 'cpg'. Sellers map this to platform-native codes (e.g., Spotify ADV categories, LinkedIn industry IDs). When omitted, sellers may infer from the brand manifest's industries field.",
+            title='Advertiser Industry',
+        ),
+    ] = None
+    invoice_recipient: Annotated[
+        InvoiceRecipient | None,
+        Field(
+            description="Override the account's default billing entity for this specific buy. When provided, the seller invoices this entity instead. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request.",
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    io_acceptance: Annotated[
+        IoAcceptance | None,
+        Field(
+            description="Acceptance of an insertion order from a committed proposal. Required when the proposal's insertion_order has requires_signature: true. References the io_id from the proposal's insertion_order."
+        ),
+    ] = None
+    po_number: Annotated[str | None, Field(description='Purchase order number for tracking')] = None
+    agency_estimate_number: Annotated[
+        str | None,
+        Field(
+            description="Agency estimate or authorization number. Primary financial reference for broadcast buys — links the order to the agency's media plan and billing system. Travels with the order and Ad-IDs through the transaction lifecycle.",
+            max_length=100,
+        ),
+    ] = None
+    start_time: Annotated[
+        Literal['asap'] | AwareDatetime,
+        Field(
+            description="Campaign start timing: 'asap' or ISO 8601 date-time", title='Start Timing'
+        ),
+    ]
+    end_time: Annotated[
+        AwareDatetime, Field(description='Campaign end date/time in ISO 8601 format')
+    ]
+    push_notification_config: Annotated[
+        PushNotificationConfig | None,
+        Field(
+            description='Optional webhook configuration for async task status notifications. Publisher will send webhooks when status changes (working, input-required, completed, failed). The client generates an operation_id and embeds it in the URL before sending — the publisher echoes it back in webhook payloads for correlation.',
+            title='Push Notification Config',
+        ),
+    ] = None
+    reporting_webhook: Annotated[
+        ReportingWebhook | None,
+        Field(
+            description='Optional webhook configuration for automated reporting delivery',
+            title='Reporting Webhook',
+        ),
+    ] = None
+    artifact_webhook: Annotated[
+        ArtifactWebhook | None,
+        Field(
+            description='Optional webhook configuration for content artifact delivery. Used by governance agents to validate content adjacency. Seller pushes artifacts to this endpoint; orchestrator forwards to governance agent for validation.'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/create_media_buy_response.py b/src/adcp/types/generated_poc/bundled/media_buy/create_media_buy_response.py
new file mode 100644
index 000000000..6ed7289bf
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/create_media_buy_response.py
@@ -0,0 +1,3209 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/create_media_buy_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel
+
+
+class Status(Enum):
+    active = 'active'
+    pending_approval = 'pending_approval'
+    rejected = 'rejected'
+    payment_required = 'payment_required'
+    suspended = 'suspended'
+    closed = 'closed'
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Billing(Enum):
+    operator = 'operator'
+    agent = 'agent'
+    advertiser = 'advertiser'
+
+
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
+    ]
+    city: Annotated[str, Field(max_length=100)]
+    postal_code: Annotated[str, Field(max_length=20)]
+    region: Annotated[
+        str | None, Field(description='State, province, or region', max_length=100)
+    ] = None
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    ]
+
+
+class Role(Enum):
+    billing = 'billing'
+    legal = 'legal'
+    creative = 'creative'
+    general = 'general'
+
+
+class Contact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    role: Annotated[
+        Role, Field(description="Contact's functional role in the business relationship")
+    ]
+    name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
+        None
+    )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    phone: Annotated[str | None, Field(max_length=30)] = None
+
+
+class Bank(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
+    ] = None
+    bic: Annotated[
+        str | None,
+        Field(
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+        ),
+    ] = None
+    routing_number: Annotated[
+        str | None,
+        Field(
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
+        ),
+    ] = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class BillingEntity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PaymentTerms(Enum):
+    net_15 = 'net_15'
+    net_30 = 'net_30'
+    net_45 = 'net_45'
+    net_60 = 'net_60'
+    net_90 = 'net_90'
+    prepay = 'prepay'
+
+
+class CreditLimit(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
+
+
+class Setup(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where the human can complete the required action (credit application, legal agreement, add funds).'
+        ),
+    ] = None
+    message: Annotated[str, Field(description="Human-readable description of what's needed.")]
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='When this setup link expires.')
+    ] = None
+
+
+class AccountScope(Enum):
+    operator = 'operator'
+    brand = 'brand'
+    operator_brand = 'operator_brand'
+    agent = 'agent'
+
+
+class Category(RootModel[str]):
+    root: Annotated[str, Field(max_length=64, pattern='^[a-z][a-z0-9_]*$')]
+
+
+class GovernanceAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL. Must use HTTPS.')]
+    categories: Annotated[
+        list[Category] | None,
+        Field(
+            description="Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+            max_length=20,
+        ),
+    ] = None
+
+
+class Protocol(Enum):
+    s3 = 's3'
+    gcs = 'gcs'
+    azure_blob = 'azure_blob'
+
+
+class Format(Enum):
+    jsonl = 'jsonl'
+    csv = 'csv'
+    parquet = 'parquet'
+    avro = 'avro'
+    orc = 'orc'
+
+
+class Compression(Enum):
+    gzip = 'gzip'
+    none = 'none'
+
+
+class ReportingBucket(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    protocol: Annotated[
+        Protocol, Field(description='Cloud storage protocol', title='Cloud Storage Protocol')
+    ]
+    bucket: Annotated[
+        str,
+        Field(
+            description='Bucket or container name',
+            max_length=63,
+            min_length=3,
+            pattern='^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$',
+        ),
+    ]
+    prefix: Annotated[
+        str | None,
+        Field(
+            description='Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.',
+            examples=['accounts/pinnacle/adcp', 'reporting/2024'],
+            max_length=512,
+            pattern='^[a-zA-Z0-9/_.-]+$',
+        ),
+    ] = None
+    region: Annotated[
+        str | None,
+        Field(
+            description='Cloud region for the bucket',
+            examples=['us-east-1', 'europe-west1'],
+            max_length=64,
+            pattern='^[a-z0-9-]+$',
+        ),
+    ] = None
+    format: Annotated[
+        Format | None,
+        Field(
+            description='File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).'
+        ),
+    ] = Format.jsonl
+    compression: Annotated[
+        Compression | None, Field(description='Compression applied to delivered files')
+    ] = Compression.gzip
+    file_retention_days: Annotated[
+        int,
+        Field(
+            description='How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.',
+            examples=[14, 30, 90],
+            ge=1,
+        ),
+    ]
+    setup_instructions: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation — buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery.'
+        ),
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    account_id: Annotated[str, Field(description='Unique identifier for this account')]
+    name: Annotated[
+        str, Field(description="Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')")
+    ]
+    advertiser: Annotated[
+        str | None, Field(description='The advertiser whose rates apply to this account')
+    ] = None
+    billing_proxy: Annotated[
+        str | None,
+        Field(
+            description='Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)'
+        ),
+    ] = None
+    status: Annotated[
+        Status,
+        Field(
+            description='Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.',
+            title='Account Status',
+        ),
+    ]
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    operator: Annotated[
+        str | None,
+        Field(
+            description="Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ] = None
+    billing: Annotated[
+        Billing | None,
+        Field(
+            description="Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+        ),
+    ] = None
+    billing_entity: Annotated[
+        BillingEntity | None,
+        Field(
+            description='Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).',
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    rate_card: Annotated[
+        str | None, Field(description='Identifier for the rate card applied to this account')
+    ] = None
+    payment_terms: Annotated[
+        PaymentTerms | None,
+        Field(
+            description='Payment terms agreed for this account. Binding for all invoices when the account is active.'
+        ),
+    ] = None
+    credit_limit: Annotated[
+        CreditLimit | None, Field(description='Maximum outstanding balance allowed')
+    ] = None
+    setup: Annotated[
+        Setup | None,
+        Field(
+            description="Present when status is 'pending_approval'. Contains next steps for completing account activation."
+        ),
+    ] = None
+    account_scope: Annotated[
+        AccountScope | None,
+        Field(
+            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+        ),
+    ] = None
+    governance_agents: Annotated[
+        list[GovernanceAgent] | None,
+        Field(
+            description='Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses — use sync_governance to set or update credentials.',
+            max_length=10,
+        ),
+    ] = None
+    reporting_bucket: Annotated[
+        ReportingBucket | None,
+        Field(
+            description="Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix — bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities)."
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, this is a sandbox account — no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Contact5(Contact):
+    pass
+
+
+class InvoiceRecipient(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact5] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Status6(Enum):
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
+    active = 'active'
+    paused = 'paused'
+    completed = 'completed'
+    rejected = 'rejected'
+    canceled = 'canceled'
+
+
+class ValidAction(Enum):
+    pause = 'pause'
+    resume = 'resume'
+    cancel = 'cancel'
+    update_budget = 'update_budget'
+    update_dates = 'update_dates'
+    update_packages = 'update_packages'
+    add_packages = 'add_packages'
+    sync_creatives = 'sync_creatives'
+
+
+class Pacing(Enum):
+    even = 'even'
+    asap = 'asap'
+    front_loaded = 'front_loaded'
+
+
+class Kind(Enum):
+    fee = 'fee'
+    discount = 'discount'
+    commission = 'commission'
+    settlement = 'settlement'
+
+
+class Adjustments(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Annotated[
+        Kind,
+        Field(
+            description='Categorizes how a price adjustment affects the transaction',
+            title='Price Adjustment Kind',
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description='Specific adjustment name. Use well-known values where applicable for interoperability.',
+            examples=[
+                'ad_serving',
+                'data_targeting',
+                'brand_safety',
+                'volume',
+                'negotiated',
+                'early_booking',
+                'agency',
+                'intermediary',
+                'cash_discount',
+                'early_payment',
+            ],
+            max_length=64,
+        ),
+    ]
+    rate: Annotated[
+        float,
+        Field(
+            description='Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive — kind determines the economic effect. Mutually exclusive with amount.',
+            gt=0.0,
+            lt=1.0,
+        ),
+    ]
+    amount: Annotated[
+        float | None,
+        Field(
+            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
+            gt=0.0,
+        ),
+    ] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            max_length=256,
+        ),
+    ] = None
+    beneficiary: Annotated[
+        str | None,
+        Field(
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            max_length=256,
+        ),
+    ] = None
+
+
+class Adjustments1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Annotated[
+        Kind,
+        Field(
+            description='Categorizes how a price adjustment affects the transaction',
+            title='Price Adjustment Kind',
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description='Specific adjustment name. Use well-known values where applicable for interoperability.',
+            examples=[
+                'ad_serving',
+                'data_targeting',
+                'brand_safety',
+                'volume',
+                'negotiated',
+                'early_booking',
+                'agency',
+                'intermediary',
+                'cash_discount',
+                'early_payment',
+            ],
+            max_length=64,
+        ),
+    ]
+    rate: Annotated[
+        float | None,
+        Field(
+            description='Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive — kind determines the economic effect. Mutually exclusive with amount.',
+            gt=0.0,
+            lt=1.0,
+        ),
+    ] = None
+    amount: Annotated[
+        float,
+        Field(
+            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
+            gt=0.0,
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            max_length=256,
+        ),
+    ] = None
+    beneficiary: Annotated[
+        str | None,
+        Field(
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            max_length=256,
+        ),
+    ] = None
+
+
+class PriceBreakdown(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments | Adjustments1],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class GeoCountry(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class GeoCountriesExcludeItem(GeoCountry):
+    pass
+
+
+class GeoRegion(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+
+
+class GeoRegionsExcludeItem(GeoRegion):
+    pass
+
+
+class System(Enum):
+    nielsen_dma = 'nielsen_dma'
+    uk_itl1 = 'uk_itl1'
+    uk_itl2 = 'uk_itl2'
+    eurostat_nuts2 = 'eurostat_nuts2'
+    custom = 'custom'
+
+
+class GeoMetro(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoMetrosExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class System6(Enum):
+    us_zip = 'us_zip'
+    us_zip_plus_four = 'us_zip_plus_four'
+    gb_outward = 'gb_outward'
+    gb_full = 'gb_full'
+    ca_fsa = 'ca_fsa'
+    ca_full = 'ca_full'
+    de_plz = 'de_plz'
+    fr_code_postal = 'fr_code_postal'
+    au_postcode = 'au_postcode'
+    ch_plz = 'ch_plz'
+    at_plz = 'at_plz'
+
+
+class GeoPostalArea(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System6,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoPostalAreasExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System6,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class Day(Enum):
+    monday = 'monday'
+    tuesday = 'tuesday'
+    wednesday = 'wednesday'
+    thursday = 'thursday'
+    friday = 'friday'
+    saturday = 'saturday'
+    sunday = 'sunday'
+
+
+class DaypartTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    days: Annotated[
+        list[Day],
+        Field(
+            description='Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).',
+            min_length=1,
+        ),
+    ]
+    start_hour: Annotated[
+        int,
+        Field(
+            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
+            ge=0,
+            le=23,
+        ),
+    ]
+    end_hour: Annotated[
+        int,
+        Field(
+            description='End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.',
+            ge=1,
+            le=24,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+        ),
+    ] = None
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class Suppress(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class Per(AdCPBaseModel):
+    pass
+
+
+class Window(Suppress):
+    pass
+
+
+class FrequencyCap(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ]
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress4(Suppress):
+    pass
+
+
+class Window6(Suppress):
+    pass
+
+
+class FrequencyCap4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress4 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ]
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window6 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress5(Suppress):
+    pass
+
+
+class Window7(Suppress):
+    pass
+
+
+class FrequencyCap5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress5 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ]
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window7 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class PropertyList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the property list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the property list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the collection list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the collection list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionListExclude(CollectionList):
+    pass
+
+
+class AcceptedMethod(Enum):
+    facial_age_estimation = 'facial_age_estimation'
+    id_document = 'id_document'
+    digital_id = 'digital_id'
+    credit_card = 'credit_card'
+    world_id = 'world_id'
+
+
+class AgeRestriction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[int, Field(description='Minimum age required', ge=13, le=99)]
+    verification_required: Annotated[
+        bool | None,
+        Field(description='Whether verified age (not inferred) is required for compliance'),
+    ] = False
+    accepted_methods: Annotated[
+        list[AcceptedMethod] | None,
+        Field(
+            description='Accepted verification methods. If omitted, any method the platform supports is acceptable.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class DevicePlatformEnum(Enum):
+    ios = 'ios'
+    android = 'android'
+    windows = 'windows'
+    macos = 'macos'
+    linux = 'linux'
+    chromeos = 'chromeos'
+    tvos = 'tvos'
+    tizen = 'tizen'
+    webos = 'webos'
+    fire_os = 'fire_os'
+    roku_os = 'roku_os'
+    unknown = 'unknown'
+
+
+class DeviceTypeEnum(Enum):
+    desktop = 'desktop'
+    mobile = 'mobile'
+    tablet = 'tablet'
+    ctv = 'ctv'
+    dooh = 'dooh'
+    unknown = 'unknown'
+
+
+class StoreCatchment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str, Field(description='Synced store-type catalog ID from sync_catalogs.')
+    ]
+    store_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific stores within the catalog. Omit to target all stores.',
+            min_length=1,
+        ),
+    ] = None
+    catchment_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Unit23(Enum):
+    min = 'min'
+    hr = 'hr'
+
+
+class TravelTime(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
+    unit: Annotated[Unit23, Field(description='Time unit.')]
+
+
+class TransportMode(Enum):
+    walking = 'walking'
+    cycling = 'cycling'
+    driving = 'driving'
+    public_transport = 'public_transport'
+
+
+class Unit24(Enum):
+    km = 'km'
+    mi = 'mi'
+    m = 'm'
+
+
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    unit: Annotated[Unit24, Field(description='Distance unit.', title='Distance Unit')]
+
+
+class Type19(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
+
+
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type19, Field(description='GeoJSON geometry type.')]
+    coordinates: Annotated[
+        list[Any],
+        Field(
+            description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
+        ),
+    ]
+
+
+class GeoProximity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ]
+    transport_mode: Annotated[
+        TransportMode,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ]
+    radius: Annotated[
+        Radius | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime5(TravelTime):
+    pass
+
+
+class Radius5(Radius):
+    pass
+
+
+class Geometry5(Geometry):
+    pass
+
+
+class GeoProximity4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime5 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius5,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ]
+    geometry: Annotated[
+        Geometry5 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime6(TravelTime):
+    pass
+
+
+class Radius6(Radius):
+    pass
+
+
+class Geometry6(Geometry):
+    pass
+
+
+class GeoProximity5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float | None,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ] = None
+    lng: Annotated[
+        float | None,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime6 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius6 | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry6,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class LanguageItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z]{2}$')]
+
+
+class MatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class KeywordTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[
+        MatchType,
+        Field(
+            description='Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly'
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class NegativeKeyword(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to exclude', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type for exclusion')]
+
+
+class TargetingOverlay(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo_countries: Annotated[
+        list[GeoCountry] | None,
+        Field(
+            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_countries_exclude: Annotated[
+        list[GeoCountriesExcludeItem] | None,
+        Field(
+            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions: Annotated[
+        list[GeoRegion] | None,
+        Field(
+            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions_exclude: Annotated[
+        list[GeoRegionsExcludeItem] | None,
+        Field(
+            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_metros: Annotated[
+        list[GeoMetro] | None,
+        Field(
+            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_metros_exclude: Annotated[
+        list[GeoMetrosExcludeItem] | None,
+        Field(
+            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas: Annotated[
+        list[GeoPostalArea] | None,
+        Field(
+            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas_exclude: Annotated[
+        list[GeoPostalAreasExcludeItem] | None,
+        Field(
+            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    daypart_targets: Annotated[
+        list[DaypartTarget] | None,
+        Field(
+            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
+            min_length=1,
+        ),
+    ] = None
+    axe_include_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
+        ),
+    ] = None
+    axe_exclude_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
+        ),
+    ] = None
+    audience_include: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    audience_exclude: Annotated[
+        list[str] | None,
+        Field(
+            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    frequency_cap: Annotated[
+        FrequencyCap | FrequencyCap4 | FrequencyCap5 | None,
+        Field(
+            description='Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.',
+            title='Frequency Cap',
+        ),
+    ] = None
+    property_list: Annotated[
+        PropertyList | None,
+        Field(
+            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+            title='Property List Reference',
+        ),
+    ] = None
+    collection_list: Annotated[
+        CollectionList | None,
+        Field(
+            description='Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.',
+            title='Collection List Reference',
+        ),
+    ] = None
+    collection_list_exclude: Annotated[
+        CollectionListExclude | None,
+        Field(
+            description="Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+            title='Collection List Reference',
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(
+            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        list[DevicePlatformEnum] | None,
+        Field(
+            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
+            min_length=1,
+        ),
+    ] = None
+    device_type: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    device_type_exclude: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    store_catchments: Annotated[
+        list[StoreCatchment] | None,
+        Field(
+            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
+            min_length=1,
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity4 | GeoProximity5] | None,
+        Field(
+            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    language: Annotated[
+        list[LanguageItem] | None,
+        Field(
+            description="Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+            min_length=1,
+        ),
+    ] = None
+    keyword_targets: Annotated[
+        list[KeywordTarget] | None,
+        Field(
+            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords: Annotated[
+        list[NegativeKeyword] | None,
+        Field(
+            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Vendor(Brand):
+    pass
+
+
+class BillingMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    max_variance_percent: Annotated[
+        float | None,
+        Field(
+            description="Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review).",
+            ge=0.0,
+            lt=100.0,
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=[
+                'live',
+                'c3',
+                'c7',
+                'tentative',
+                'final',
+                'post_ivt',
+                'post_sivt',
+                'downloads_30d',
+            ],
+        ),
+    ] = None
+
+
+class AvailableRemedy(Enum):
+    additional_delivery = 'additional_delivery'
+    credit = 'credit'
+    invoice_adjustment = 'invoice_adjustment'
+
+
+class MakegoodPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_remedies: Annotated[
+        list[AvailableRemedy],
+        Field(
+            description='Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.',
+            min_length=1,
+        ),
+    ]
+
+
+class MeasurementTerms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    billing_measurement: Annotated[
+        BillingMeasurement | None,
+        Field(
+            description="Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV)."
+        ),
+    ] = None
+    makegood_policy: Annotated[
+        MakegoodPolicy | None,
+        Field(
+            description='Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.'
+        ),
+    ] = None
+
+
+class Metric(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class PerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        Metric,
+        Field(
+            description='The performance metric this standard applies to.',
+            title='Performance Standard Metric',
+        ),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            title='Viewability Standard',
+        ),
+    ] = None
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+
+
+class CreativeAssignment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Relative delivery weight for this creative (0–100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally — a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class FormatIdsToProvideItem(FormatId):
+    pass
+
+
+class Metric3(Enum):
+    clicks = 'clicks'
+    views = 'views'
+    completed_views = 'completed_views'
+    viewed_seconds = 'viewed_seconds'
+    attention_seconds = 'attention_seconds'
+    attention_score = 'attention_score'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    reach = 'reach'
+
+
+class ReachUnit(Per):
+    pass
+
+
+class Window8(Suppress):
+    pass
+
+
+class TargetFrequency(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ]
+    max: Annotated[
+        int | None,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ] = None
+    window: Annotated[
+        Window8,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Window9(Suppress):
+    pass
+
+
+class TargetFrequency3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int | None,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ] = None
+    max: Annotated[
+        int,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ]
+    window: Annotated[
+        Window9,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Target(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[
+        float, Field(description='Target cost per metric unit in the buy currency', gt=0.0)
+    ]
+
+
+class Target6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['threshold_rate']
+    value: Annotated[
+        float,
+        Field(
+            description='Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).',
+            gt=0.0,
+        ),
+    ]
+
+
+class OptimizationGoals(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['metric']
+    metric: Annotated[
+        Metric3,
+        Field(
+            description="Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions — see view_duration_seconds), reach (unique audience reach — see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing — social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins — signals of intent to return), profile_visits (visits to the brand's in-platform page — profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+        ),
+    ]
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description="Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+        ),
+    ] = None
+    target_frequency: Annotated[
+        TargetFrequency | TargetFrequency3 | None,
+        Field(
+            description="Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed."
+        ),
+    ] = None
+    view_duration_seconds: Annotated[
+        float | None,
+        Field(
+            description="Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2–15 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values — silent rounding would create measurement discrepancies.",
+            gt=0.0,
+        ),
+    ] = None
+    target: Annotated[
+        Target | Target6 | None,
+        Field(
+            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class EventSource(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_source_id: Annotated[
+        str,
+        Field(
+            description='Event source to include (must be configured on this account via sync_event_sources)',
+            min_length=1,
+        ),
+    ]
+    event_type: Annotated[
+        ConversionEvent,
+        Field(
+            description='Event type to include from this source (e.g., purchase, lead, app_install, refund)',
+            title='Event Type',
+        ),
+    ]
+    custom_event_name: Annotated[
+        str | None,
+        Field(
+            description="Required when event_type is 'custom'. Platform-specific name for the custom event."
+        ),
+    ] = None
+    value_field: Annotated[
+        str | None,
+        Field(
+            description="Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' — sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs — the seller maps it to their platform's value ingestion mechanism."
+        ),
+    ] = None
+    value_factor: Annotated[
+        float | None,
+        Field(
+            description="Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs — the seller applies it when computing aggregated value metrics."
+        ),
+    ] = 1
+
+
+class Target7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[float, Field(description='Target cost per event in the buy currency', gt=0.0)]
+
+
+class Target8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['per_ad_spend']
+    value: Annotated[
+        float,
+        Field(description='Target return ratio (e.g., 4.0 means $4 of value per $1 spent)', gt=0.0),
+    ]
+
+
+class Target9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['maximize_value']
+
+
+class PostClick(Suppress):
+    pass
+
+
+class PostView(Suppress):
+    pass
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick,
+        Field(
+            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
+        ),
+    ]
+    post_view: Annotated[
+        PostView | None,
+        Field(
+            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
+        ),
+    ] = None
+
+
+class OptimizationGoals3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['event']
+    event_sources: Annotated[
+        list[EventSource],
+        Field(
+            description='Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries — the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.',
+            min_length=1,
+        ),
+    ]
+    target: Annotated[
+        Target7 | Target8 | Target9 | None,
+        Field(
+            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget — regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.'
+        ),
+    ] = None
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class CanceledBy(Enum):
+    buyer = 'buyer'
+    seller = 'seller'
+
+
+class Cancellation(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    canceled_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when this package was canceled.')
+    ]
+    canceled_by: Annotated[
+        CanceledBy,
+        Field(description='Which party initiated the package cancellation.', title='Canceled By'),
+    ]
+    reason: Annotated[
+        str | None, Field(description='Reason the package was canceled.', max_length=500)
+    ] = None
+    acknowledged_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation.'
+        ),
+    ] = None
+
+
+class Package(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    package_id: Annotated[str, Field(description="Seller's unique identifier for the package")]
+    product_id: Annotated[
+        str | None, Field(description='ID of the product this package is based on')
+    ] = None
+    budget: Annotated[
+        float | None,
+        Field(
+            description='Budget allocation for this package in the currency specified by the pricing option',
+            ge=0.0,
+        ),
+    ] = None
+    pacing: Annotated[
+        Pacing | None, Field(description='Budget pacing strategy', title='Pacing')
+    ] = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description="ID of the selected pricing option from the product's pricing_options array"
+        ),
+    ] = None
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    impressions: Annotated[
+        float | None, Field(description='Impression goal for this package', ge=0.0)
+    ] = None
+    catalogs: Annotated[
+        list[Catalog] | None,
+        Field(
+            description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Echoed from the create_media_buy request.'
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.'
+        ),
+    ] = None
+    targeting_overlay: Annotated[
+        TargetingOverlay | None,
+        Field(
+            description='Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).',
+            title='Targeting Overlay',
+        ),
+    ] = None
+    measurement_terms: Annotated[
+        MeasurementTerms | None,
+        Field(
+            description="Agreed billing measurement and makegood terms for this package. Reflects what was negotiated — may differ from the buyer's proposal or the product's defaults. When present, these terms are binding for the package's duration.",
+            title='Measurement Terms',
+        ),
+    ] = None
+    performance_standards: Annotated[
+        list[PerformanceStandard] | None,
+        Field(
+            description='Agreed performance standards for this package. When any entry specifies a vendor, creatives assigned to this package MUST include corresponding tracker_script or tracker_pixel assets from that vendor.',
+            min_length=1,
+        ),
+    ] = None
+    creative_assignments: Annotated[
+        list[CreativeAssignment] | None,
+        Field(description='Creative assets assigned to this package'),
+    ] = None
+    format_ids_to_provide: Annotated[
+        list[FormatIdsToProvideItem] | None,
+        Field(description='Format IDs that creative assets will be provided for this package'),
+    ] = None
+    optimization_goals: Annotated[
+        list[OptimizationGoals | OptimizationGoals3] | None,
+        Field(
+            description='Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.',
+            min_length=1,
+        ),
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package is paused by the buyer. Paused packages do not deliver impressions. Defaults to false.'
+        ),
+    ] = False
+    canceled: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.'
+        ),
+    ] = False
+    cancellation: Annotated[
+        Cancellation | None,
+        Field(description='Cancellation metadata. Present only when canceled is true.'),
+    ] = None
+    agency_estimate_number: Annotated[
+        str | None,
+        Field(
+            description="Agency estimate or authorization number for this package. Echoed from the buyer's request. When present on the package, takes precedence over the media buy-level estimate number.",
+            max_length=100,
+        ),
+    ] = None
+    creative_deadline: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Geo(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    countries: Annotated[
+        list[str] | None,
+        Field(description='ISO 3166-1 alpha-2 country codes where ads will deliver.'),
+    ] = None
+    regions: Annotated[
+        list[str] | None, Field(description='ISO 3166-2 subdivision codes where ads will deliver.')
+    ] = None
+
+
+class Channel(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class Suppress6(Suppress):
+    pass
+
+
+class Window10(Suppress):
+    pass
+
+
+class FrequencyCap6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress6,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ]
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window10 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress7(Suppress):
+    pass
+
+
+class Window11(Suppress):
+    pass
+
+
+class FrequencyCap7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress7 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ]
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window11 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress8(Suppress):
+    pass
+
+
+class Window12(Suppress):
+    pass
+
+
+class FrequencyCap8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress8 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ]
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window12 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class SignalId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['catalog'],
+        Field(
+            description="Discriminator indicating this signal is from a data provider's published catalog"
+        ),
+    ]
+    data_provider_domain: Annotated[
+        str,
+        Field(
+            description="Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class SignalId2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['agent'],
+        Field(
+            description='Discriminator indicating this signal is native to the agent (not from a data provider catalog)'
+        ),
+    ]
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class AudienceTargeting(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['signal'], Field(description='Discriminator for signal-based selectors')
+    ]
+    signal_id: Annotated[
+        SignalId | SignalId2,
+        Field(description='The signal to target', discriminator='source', title='Signal ID'),
+    ]
+    value_type: Annotated[Literal['binary'], Field(description='Discriminator for binary signals')]
+    value: Annotated[
+        bool,
+        Field(
+            description='Whether to include (true) or exclude (false) users matching this signal'
+        ),
+    ]
+
+
+
+class AudienceTargeting1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['signal'], Field(description='Discriminator for signal-based selectors')
+    ]
+    signal_id: Annotated[
+        SignalId | SignalId2,
+        Field(description='The signal to target', discriminator='source', title='Signal ID'),
+    ]
+    value_type: Annotated[
+        Literal['categorical'], Field(description='Discriminator for categorical signals')
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description='Values to target. Users with any of these values will be included.',
+            min_length=1,
+        ),
+    ]
+
+
+
+class AudienceTargeting2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['signal'], Field(description='Discriminator for signal-based selectors')
+    ]
+    signal_id: Annotated[
+        SignalId | SignalId2,
+        Field(description='The signal to target', discriminator='source', title='Signal ID'),
+    ]
+    value_type: Annotated[
+        Literal['numeric'], Field(description='Discriminator for numeric signals')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(
+            description='Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided.'
+        ),
+    ] = None
+    max_value: Annotated[
+        float | None,
+        Field(
+            description='Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided.'
+        ),
+    ] = None
+
+
+class AudienceTargeting3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['description'], Field(description='Discriminator for description-based selectors')
+    ]
+    description: Annotated[
+        str,
+        Field(
+            description="Natural language description of the audience (e.g., 'likely EV buyers', 'high net worth individuals', 'vulnerable communities')",
+            max_length=2000,
+            min_length=1,
+        ),
+    ]
+    category: Annotated[
+        str | None,
+        Field(
+            description="Optional grouping hint for the governance agent (e.g., 'demographic', 'behavioral', 'contextual', 'financial')"
+        ),
+    ] = None
+
+
+class PlannedDelivery(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo: Annotated[Geo | None, Field(description='Geographic targeting the seller will apply.')] = (
+        None
+    )
+    channels: Annotated[
+        list[Channel] | None, Field(description='Channels the seller will deliver on.')
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None, Field(description='Actual flight start the seller will use.')
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None, Field(description='Actual flight end the seller will use.')
+    ] = None
+    frequency_cap: Annotated[
+        FrequencyCap6 | FrequencyCap7 | FrequencyCap8 | None,
+        Field(description='Frequency cap the seller will apply.', title='Frequency Cap'),
+    ] = None
+    audience_summary: Annotated[
+        str | None,
+        Field(description='Human-readable summary of the audience the seller will target.'),
+    ] = None
+    audience_targeting: Annotated[
+        list[AudienceTargeting | AudienceTargeting1 | AudienceTargeting2 | AudienceTargeting3]
+        | None,
+        Field(
+            description='Structured audience targeting the seller will activate. Each entry is either a signal reference or a descriptive criterion. When present, governance agents MUST use this for bias/fairness validation and SHOULD ignore audience_summary for validation purposes. The audience_summary field is a human-readable rendering of this array, not an independent declaration.',
+            min_length=1,
+        ),
+    ] = None
+    total_budget: Annotated[
+        float | None, Field(description='Total budget the seller will deliver against.', ge=0.0)
+    ] = None
+    currency: Annotated[
+        str | None,
+        Field(description='ISO 4217 currency code for the budget.', pattern='^[A-Z]{3}$'),
+    ] = None
+    enforced_policies: Annotated[
+        list[str] | None,
+        Field(description='Registry policy IDs the seller will enforce for this delivery.'),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class CreateMediaBuyResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    media_buy_id: Annotated[
+        str, Field(description="Seller's unique identifier for the created media buy")
+    ]
+    account: Annotated[
+        Account | None,
+        Field(
+            description='Account billed for this media buy. Includes advertiser, billing proxy (if any), and rate card applied.',
+            examples=[
+                {
+                    'description': 'Direct advertiser account',
+                    'data': {
+                        'account_id': 'acc_acme_direct',
+                        'name': 'Acme',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'acme-corp.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Advertiser account with agency billing proxy',
+                    'data': {
+                        'account_id': 'acc_acme_pinnacle',
+                        'name': 'Acme c/o Pinnacle',
+                        'advertiser': 'Acme Corp',
+                        'billing_proxy': 'Pinnacle Media',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator_brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_60',
+                    },
+                },
+                {
+                    'description': 'Agency as direct buyer',
+                    'data': {
+                        'account_id': 'acc_pinnacle',
+                        'name': 'Pinnacle',
+                        'advertiser': 'Pinnacle Media',
+                        'brand': {'domain': 'pinnacle-media.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator',
+                        'rate_card': 'agency_standard',
+                        'payment_terms': 'net_45',
+                    },
+                },
+                {
+                    'description': 'Account with brand identity and operator (via sync_accounts)',
+                    'data': {
+                        'account_id': 'acc_spark_001',
+                        'name': 'Spark (via Pinnacle)',
+                        'advertiser': 'Nova Brands',
+                        'status': 'active',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'agent',
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Pending account awaiting seller approval',
+                    'data': {
+                        'account_id': 'acc_glow_pending',
+                        'name': 'Glow',
+                        'advertiser': 'Nova Brands',
+                        'status': 'pending_approval',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                    },
+                },
+                {
+                    'description': 'Agency operates but advertiser is billed directly with structured billing entity',
+                    'data': {
+                        'account_id': 'acc_acme_direct_bill',
+                        'name': 'Acme (billed direct)',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'advertiser',
+                        'billing_entity': {
+                            'legal_name': 'Acme Corporation GmbH',
+                            'vat_id': 'DE987654321',
+                            'address': {
+                                'street': 'Hauptstrasse 42',
+                                'city': 'Munich',
+                                'postal_code': '80331',
+                                'country': 'DE',
+                            },
+                            'contacts': [
+                                {
+                                    'role': 'billing',
+                                    'name': 'AP Department',
+                                    'email': 'billing@acme-corp.com',
+                                }
+                            ],
+                        },
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+            ],
+            title='Account',
+        ),
+    ] = None
+    invoice_recipient: Annotated[
+        InvoiceRecipient | None,
+        Field(
+            description='Per-buy invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).',
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    status: Annotated[
+        Status6 | None,
+        Field(
+            description="Initial media buy status. Either 'pending_creatives' (awaiting creative assets), 'pending_start' (ready to serve, waiting for flight date), or 'active' (immediate activation).",
+            title='Media Buy Status',
+        ),
+    ] = None
+    confirmed_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when this media buy was confirmed by the seller. A successful create_media_buy response constitutes order confirmation.'
+        ),
+    ] = None
+    creative_deadline: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 timestamp for creative upload deadline')
+    ] = None
+    revision: Annotated[
+        int | None,
+        Field(
+            description='Initial revision number for this media buy. Use in subsequent update_media_buy requests for optimistic concurrency.',
+            ge=1,
+        ),
+    ] = None
+    valid_actions: Annotated[
+        list[ValidAction] | None,
+        Field(
+            description='Actions the buyer can perform on this media buy after creation. Saves a round-trip to get_media_buys.'
+        ),
+    ] = None
+    packages: Annotated[
+        list[Package],
+        Field(description='Array of created packages with complete state information'),
+    ]
+    planned_delivery: Annotated[
+        PlannedDelivery | None,
+        Field(
+            description="The seller's interpreted delivery parameters. Describes what the seller will actually run -- geo, channels, flight dates, frequency caps, and budget. Present when the account has governance_agents or when the seller chooses to provide delivery transparency.",
+            title='Planned Delivery',
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class CreateMediaBuyResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error],
+        Field(description='Array of errors explaining why the operation failed', min_length=1),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+CreateMediaBuyResponse = CreateMediaBuyResponse3 | CreateMediaBuyResponse4
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/get_media_buy_delivery_request.py b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buy_delivery_request.py
new file mode 100644
index 000000000..560e1ca17
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buy_delivery_request.py
@@ -0,0 +1,388 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/get_media_buy_delivery_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field, RootModel
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account17(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class StatusFilter(Enum):
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
+    active = 'active'
+    paused = 'paused'
+    completed = 'completed'
+    rejected = 'rejected'
+    canceled = 'canceled'
+
+
+class StatusFilter2(RootModel[list[StatusFilter]]):
+    root: Annotated[
+        list[StatusFilter],
+        Field(
+            description='Filter by status. Can be a single status or array of statuses',
+            min_length=1,
+        ),
+    ]
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class PostClick(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class PostView(PostClick):
+    pass
+
+
+class Model(Enum):
+    last_touch = 'last_touch'
+    first_touch = 'first_touch'
+    linear = 'linear'
+    time_decay = 'time_decay'
+    data_driven = 'data_driven'
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick | None, Field(description='Post-click attribution window to apply.')
+    ] = None
+    post_view: Annotated[
+        PostView | None, Field(description='Post-view attribution window to apply.')
+    ] = None
+    model: Annotated[
+        Model | None,
+        Field(
+            description='Attribution model to use. When omitted, the seller applies their default model.',
+            title='Attribution Model',
+        ),
+    ] = None
+
+
+class GeoLevel(Enum):
+    country = 'country'
+    region = 'region'
+    metro = 'metro'
+    postal_area = 'postal_area'
+
+
+class System(Enum):
+    nielsen_dma = 'nielsen_dma'
+    uk_itl1 = 'uk_itl1'
+    uk_itl2 = 'uk_itl2'
+    eurostat_nuts2 = 'eurostat_nuts2'
+    custom = 'custom'
+
+
+class System9(Enum):
+    us_zip = 'us_zip'
+    us_zip_plus_four = 'us_zip_plus_four'
+    gb_outward = 'gb_outward'
+    gb_full = 'gb_full'
+    ca_fsa = 'ca_fsa'
+    ca_full = 'ca_full'
+    de_plz = 'de_plz'
+    fr_code_postal = 'fr_code_postal'
+    au_postcode = 'au_postcode'
+    ch_plz = 'ch_plz'
+    at_plz = 'at_plz'
+
+
+class SortBy(Enum):
+    impressions = 'impressions'
+    spend = 'spend'
+    clicks = 'clicks'
+    ctr = 'ctr'
+    views = 'views'
+    completed_views = 'completed_views'
+    completion_rate = 'completion_rate'
+    conversions = 'conversions'
+    conversion_value = 'conversion_value'
+    roas = 'roas'
+    cost_per_acquisition = 'cost_per_acquisition'
+    new_to_brand_rate = 'new_to_brand_rate'
+    leads = 'leads'
+    grps = 'grps'
+    reach = 'reach'
+    frequency = 'frequency'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    engagement_rate = 'engagement_rate'
+    cost_per_click = 'cost_per_click'
+
+
+class Geo(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo_level: Annotated[
+        GeoLevel,
+        Field(
+            description='Geographic granularity level for the breakdown',
+            title='Geographic Targeting Level',
+        ),
+    ]
+    system: Annotated[
+        System | System9 | None,
+        Field(
+            description="Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Required when geo_level is 'metro' or 'postal_area'."
+        ),
+    ] = None
+    limit: Annotated[
+        int | None,
+        Field(
+            description='Maximum number of geo entries to return. Defaults to 25. When truncated, by_geo_truncated is true in the response.',
+            ge=1,
+        ),
+    ] = 25
+    sort_by: Annotated[
+        SortBy | None,
+        Field(
+            description="Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+            title='Sort Metric',
+        ),
+    ] = SortBy.spend
+
+
+class DeviceType(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    limit: Annotated[
+        int | None,
+        Field(
+            description='Maximum number of entries to return. When omitted, all entries are returned (the enum is small and bounded).',
+            ge=1,
+        ),
+    ] = None
+    sort_by: Annotated[
+        SortBy | None,
+        Field(
+            description="Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+            title='Sort Metric',
+        ),
+    ] = SortBy.spend
+
+
+class DevicePlatform(DeviceType):
+    pass
+
+
+class Audience(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    limit: Annotated[
+        int | None, Field(description='Maximum number of entries to return. Defaults to 25.', ge=1)
+    ] = 25
+    sort_by: Annotated[
+        SortBy | None,
+        Field(
+            description="Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric.",
+            title='Sort Metric',
+        ),
+    ] = SortBy.spend
+
+
+class Placement(Audience):
+    pass
+
+
+class ReportingDimensions(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo: Annotated[
+        Geo | None,
+        Field(
+            description='Request geographic breakdown. Check reporting_capabilities.supports_geo_breakdown for available levels and systems.'
+        ),
+    ] = None
+    device_type: Annotated[
+        DeviceType | None, Field(description='Request device type breakdown.')
+    ] = None
+    device_platform: Annotated[
+        DevicePlatform | None, Field(description='Request device platform breakdown.')
+    ] = None
+    audience: Annotated[
+        Audience | None, Field(description='Request audience segment breakdown.')
+    ] = None
+    placement: Annotated[Placement | None, Field(description='Request placement breakdown.')] = None
+
+
+class GetMediaBuyDeliveryRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account17 | None,
+        Field(
+            description='Filter delivery data to a specific account. When omitted, returns data across all accessible accounts.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    media_buy_ids: Annotated[
+        list[str] | None,
+        Field(description='Array of media buy IDs to get delivery data for', min_length=1),
+    ] = None
+    status_filter: Annotated[
+        StatusFilter | StatusFilter2 | None,
+        Field(description='Filter by status. Can be a single status or array of statuses'),
+    ] = None
+    start_date: Annotated[
+        str | None,
+        Field(
+            description="Start date for reporting period (YYYY-MM-DD). When omitted along with end_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'.",
+            pattern='^\\d{4}-\\d{2}-\\d{2}$',
+        ),
+    ] = None
+    end_date: Annotated[
+        str | None,
+        Field(
+            description="End date for reporting period (YYYY-MM-DD). When omitted along with start_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'.",
+            pattern='^\\d{4}-\\d{2}-\\d{2}$',
+        ),
+    ] = None
+    include_package_daily_breakdown: Annotated[
+        bool | None,
+        Field(
+            description='When true, include daily_breakdown arrays within each package in by_package. Useful for per-package pacing analysis and line-item monitoring. Omit or set false to reduce response size — package daily data can be large for multi-package buys over long flights.'
+        ),
+    ] = False
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description='Attribution window to apply for conversion metrics. When provided, the seller returns conversion data using the requested lookback windows instead of their platform default. The seller echoes the applied window in the response. Sellers that do not support configurable windows ignore this field and return their default. Check get_adcp_capabilities conversion_tracking.attribution_windows for available options.'
+        ),
+    ] = None
+    reporting_dimensions: Annotated[
+        ReportingDimensions | None,
+        Field(
+            description='Request dimensional breakdowns in delivery reporting. Each key enables a specific breakdown dimension within by_package — include as an empty object (e.g., "device_type": {}) to activate with defaults. Omit entirely for no breakdowns (backward compatible). Unsupported dimensions are silently omitted from the response. Note: keyword, catalog_item, and creative breakdowns are returned automatically when the seller supports them and are not controlled by this object.'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/get_media_buy_delivery_response.py b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buy_delivery_response.py
new file mode 100644
index 000000000..a917421fe
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buy_delivery_response.py
@@ -0,0 +1,2506 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/get_media_buy_delivery_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class NotificationType(Enum):
+    scheduled = 'scheduled'
+    final = 'final'
+    delayed = 'delayed'
+    adjusted = 'adjusted'
+    window_update = 'window_update'
+
+
+class ReportingPeriod(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    start: Annotated[
+        AwareDatetime,
+        Field(description='ISO 8601 start timestamp in UTC (e.g., 2024-02-05T00:00:00Z)'),
+    ]
+    end: Annotated[
+        AwareDatetime,
+        Field(description='ISO 8601 end timestamp in UTC (e.g., 2024-02-05T23:59:59Z)'),
+    ]
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class PostClick(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class PostView(PostClick):
+    pass
+
+
+class Model(Enum):
+    last_touch = 'last_touch'
+    first_touch = 'first_touch'
+    linear = 'linear'
+    time_decay = 'time_decay'
+    data_driven = 'data_driven'
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick | None,
+        Field(
+            description='Post-click attribution window. Conversions occurring within this duration after a click are attributed to the ad.'
+        ),
+    ] = None
+    post_view: Annotated[
+        PostView | None,
+        Field(
+            description='Post-view attribution window. Conversions occurring within this duration after an ad impression (without click) are attributed to the ad.'
+        ),
+    ] = None
+    model: Annotated[
+        Model,
+        Field(
+            description='Attribution model used to assign credit when multiple touchpoints exist',
+            title='Attribution Model',
+        ),
+    ]
+
+
+class ReachUnit(AdCPBaseModel):
+    pass
+
+
+class AggregatedTotals(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    impressions: Annotated[
+        float, Field(description='Total impressions delivered across all media buys', ge=0.0)
+    ]
+    spend: Annotated[float, Field(description='Total amount spent across all media buys', ge=0.0)]
+    clicks: Annotated[
+        float | None,
+        Field(description='Total clicks across all media buys (if applicable)', ge=0.0),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Total audio/video completions across all media buys (if applicable)',
+            ge=0.0,
+        ),
+    ] = None
+    views: Annotated[
+        float | None, Field(description='Total views across all media buys (if applicable)', ge=0.0)
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(description='Total conversions across all media buys (if applicable)', ge=0.0),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(description='Total conversion value across all media buys (if applicable)', ge=0.0),
+    ] = None
+    roas: Annotated[
+        float | None,
+        Field(
+            description='Aggregate return on ad spend across all media buys (total conversion_value / total spend)',
+            ge=0.0,
+        ),
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of total conversions across all media buys from first-time brand buyers (weighted by conversion volume, not a simple average of per-buy rates)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None,
+        Field(
+            description='Aggregate cost per conversion across all media buys (total spend / total conversions)',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(
+            description='Aggregate completion rate across all media buys (weighted by impressions, not a simple average of per-buy rates)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Deduplicated reach across all media buys (if the seller can deduplicate across buys; otherwise sum of per-buy reach). Only present when all media buys share the same reach_unit. Omitted when reach units are heterogeneous — use per-buy reach values instead.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for reach. Only present when all aggregated media buys use the same reach_unit.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description='Average frequency per reach unit across all media buys (impressions / reach when cross-buy deduplication is available). Only present when reach is present.',
+            ge=0.0,
+        ),
+    ] = None
+    media_buy_count: Annotated[
+        int, Field(description='Number of media buys included in the response', ge=0)
+    ]
+
+
+class Status(Enum):
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
+    pending = 'pending'
+    active = 'active'
+    paused = 'paused'
+    completed = 'completed'
+    rejected = 'rejected'
+    canceled = 'canceled'
+    failed = 'failed'
+    reporting_delayed = 'reporting_delayed'
+
+
+class PricingModel(Enum):
+    cpm = 'cpm'
+    vcpm = 'vcpm'
+    cpc = 'cpc'
+    cpcv = 'cpcv'
+    cpv = 'cpv'
+    cpp = 'cpp'
+    cpa = 'cpa'
+    flat_rate = 'flat_rate'
+    time = 'time'
+
+
+class EventType(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ByEventTypeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_type: Annotated[EventType, Field(description='The event type', title='Event Type')]
+    event_source_id: Annotated[
+        str | None,
+        Field(
+            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
+        ),
+    ] = None
+    count: Annotated[float, Field(description='Number of events of this type', ge=0.0)]
+    value: Annotated[
+        float | None, Field(description='Total monetary value of events of this type', ge=0.0)
+    ] = None
+
+
+class QuartileData(AdCPBaseModel):
+    q1_views: Annotated[float | None, Field(description='25% completion views', ge=0.0)] = None
+    q2_views: Annotated[float | None, Field(description='50% completion views', ge=0.0)] = None
+    q3_views: Annotated[float | None, Field(description='75% completion views', ge=0.0)] = None
+    q4_views: Annotated[float | None, Field(description='100% completion views', ge=0.0)] = None
+
+
+class VenueBreakdownItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    venue_id: Annotated[str, Field(description='Venue identifier')]
+    venue_name: Annotated[str | None, Field(description='Human-readable venue name')] = None
+    venue_type: Annotated[
+        str | None,
+        Field(description="Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"),
+    ] = None
+    impressions: Annotated[int, Field(description='Impressions delivered at this venue', ge=0)]
+    loop_plays: Annotated[int | None, Field(description='Loop plays at this venue', ge=0)] = None
+    screens_used: Annotated[
+        int | None, Field(description='Number of screens used at this venue', ge=0)
+    ] = None
+
+
+class DoohMetrics(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    loop_plays: Annotated[
+        int | None, Field(description='Number of times ad played in rotation', ge=0)
+    ] = None
+    screens_used: Annotated[
+        int | None, Field(description='Number of unique screens displaying the ad', ge=0)
+    ] = None
+    screen_time_seconds: Annotated[
+        int | None, Field(description='Total display time in seconds', ge=0)
+    ] = None
+    sov_achieved: Annotated[
+        float | None,
+        Field(description='Actual share of voice delivered (0.0 to 1.0)', ge=0.0, le=1.0),
+    ] = None
+    calculation_notes: Annotated[
+        str | None, Field(description='Explanation of how DOOH impressions were calculated')
+    ] = None
+    venue_breakdown: Annotated[
+        list[VenueBreakdownItem] | None, Field(description='Per-venue performance breakdown')
+    ] = None
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class Viewability(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    measurable_impressions: Annotated[
+        float | None,
+        Field(
+            description='Impressions where viewability could be measured. Excludes environments without measurement capability (e.g., non-Intersection Observer browsers, certain app environments).',
+            ge=0.0,
+        ),
+    ] = None
+    viewable_impressions: Annotated[
+        float | None,
+        Field(
+            description='Impressions that met the viewability threshold defined by the measurement standard.',
+            ge=0.0,
+        ),
+    ] = None
+    viewable_rate: Annotated[
+        float | None,
+        Field(
+            description='Viewable impression rate (viewable_impressions / measurable_impressions). Range 0.0 to 1.0.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description='Viewability measurement standard applied to these metrics.',
+            title='Viewability Standard',
+        ),
+    ] = None
+
+
+class ActionSource(Enum):
+    website = 'website'
+    app = 'app'
+    offline = 'offline'
+    phone_call = 'phone_call'
+    chat = 'chat'
+    email = 'email'
+    in_store = 'in_store'
+    system_generated = 'system_generated'
+    other = 'other'
+
+
+class ByActionSourceItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action_source: Annotated[
+        ActionSource, Field(description='Where the conversion occurred', title='Action Source')
+    ]
+    event_source_id: Annotated[
+        str | None,
+        Field(
+            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
+        ),
+    ] = None
+    count: Annotated[
+        float, Field(description='Number of conversions from this action source', ge=0.0)
+    ]
+    value: Annotated[
+        float | None,
+        Field(description='Total monetary value of conversions from this action source', ge=0.0),
+    ] = None
+
+
+class Totals(AdCPBaseModel):
+    impressions: Annotated[float | None, Field(description='Impressions delivered', ge=0.0)] = None
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    effective_rate: Annotated[
+        float | None,
+        Field(
+            description="Effective rate paid per unit based on pricing_model (e.g., actual CPM for 'cpm', actual cost per completed view for 'cpcv', actual cost per point for 'cpp')",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class ByEventTypeItem4(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics4(DoohMetrics):
+    pass
+
+
+class Viewability4(Viewability):
+    pass
+
+
+class ByActionSourceItem4(ByActionSourceItem):
+    pass
+
+
+class DeliveryStatus(Enum):
+    delivering = 'delivering'
+    completed = 'completed'
+    budget_exhausted = 'budget_exhausted'
+    flight_ended = 'flight_ended'
+    goal_met = 'goal_met'
+
+
+class ByEventTypeItem5(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics5(DoohMetrics):
+    pass
+
+
+class Viewability5(Viewability):
+    pass
+
+
+class ByActionSourceItem5(ByActionSourceItem):
+    pass
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class ByCatalogItemItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem5] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics5 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability5 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem5] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    content_id: Annotated[
+        str, Field(description='Catalog item identifier (e.g., SKU, GTIN, job_id, offering_id)')
+    ]
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(description='Identifier type for this content_id', title='Content ID Type'),
+    ] = None
+
+
+class ByEventTypeItem6(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics6(DoohMetrics):
+    pass
+
+
+class Viewability6(Viewability):
+    pass
+
+
+class ByActionSourceItem6(ByActionSourceItem):
+    pass
+
+
+class ByCreativeItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem6] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics6 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability6 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem6] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    creative_id: Annotated[
+        str, Field(description='Creative identifier matching the creative assignment')
+    ]
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Observed delivery share for this creative within the package during the reporting period, expressed as a percentage (0-100). Reflects actual delivery distribution, not a configured setting.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+
+
+class ByEventTypeItem7(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics7(DoohMetrics):
+    pass
+
+
+class Viewability7(Viewability):
+    pass
+
+
+class ByActionSourceItem7(ByActionSourceItem):
+    pass
+
+
+class MatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class ByKeywordItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem7] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics7 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability7 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem7] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    keyword: Annotated[str, Field(description='The targeted keyword')]
+    match_type: Annotated[MatchType, Field(description='Match type for this keyword')]
+
+
+class ByEventTypeItem8(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics8(DoohMetrics):
+    pass
+
+
+class Viewability8(Viewability):
+    pass
+
+
+class ByActionSourceItem8(ByActionSourceItem):
+    pass
+
+
+class GeoLevel(Enum):
+    country = 'country'
+    region = 'region'
+    metro = 'metro'
+    postal_area = 'postal_area'
+
+
+class ByGeoItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem8] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics8 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability8 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem8] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    geo_level: Annotated[
+        GeoLevel,
+        Field(
+            description='Geographic level of this entry (country, region, metro, postal_area)',
+            title='Geographic Targeting Level',
+        ),
+    ]
+    system: Annotated[
+        str | None,
+        Field(
+            description="Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Present when geo_level is 'metro' or 'postal_area'."
+        ),
+    ] = None
+    geo_code: Annotated[
+        str,
+        Field(
+            description="Geographic code within the level and system. Country: ISO 3166-1 alpha-2 ('US'). Region: ISO 3166-2 with country prefix ('US-CA'). Metro/postal: system-specific code ('501', '10001')."
+        ),
+    ]
+    geo_name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable geographic name (e.g., 'United States', 'California', 'New York DMA')"
+        ),
+    ] = None
+
+
+class ByEventTypeItem9(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics9(DoohMetrics):
+    pass
+
+
+class Viewability9(Viewability):
+    pass
+
+
+class ByActionSourceItem9(ByActionSourceItem):
+    pass
+
+
+class DeviceType(Enum):
+    desktop = 'desktop'
+    mobile = 'mobile'
+    tablet = 'tablet'
+    ctv = 'ctv'
+    dooh = 'dooh'
+    unknown = 'unknown'
+
+
+class ByDeviceTypeItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem9] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics9 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability9 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem9] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    device_type: Annotated[
+        DeviceType,
+        Field(
+            description='Device form factor (desktop, mobile, tablet, ctv, dooh, unknown)',
+            title='Device Type',
+        ),
+    ]
+
+
+class ByEventTypeItem10(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics10(DoohMetrics):
+    pass
+
+
+class Viewability10(Viewability):
+    pass
+
+
+class ByActionSourceItem10(ByActionSourceItem):
+    pass
+
+
+class DevicePlatform(Enum):
+    ios = 'ios'
+    android = 'android'
+    windows = 'windows'
+    macos = 'macos'
+    linux = 'linux'
+    chromeos = 'chromeos'
+    tvos = 'tvos'
+    tizen = 'tizen'
+    webos = 'webos'
+    fire_os = 'fire_os'
+    roku_os = 'roku_os'
+    unknown = 'unknown'
+
+
+class ByDevicePlatformItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem10] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics10 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability10 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem10] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        DevicePlatform, Field(description='Operating system platform', title='Device Platform')
+    ]
+
+
+class ByEventTypeItem11(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics11(DoohMetrics):
+    pass
+
+
+class Viewability11(Viewability):
+    pass
+
+
+class ByActionSourceItem11(ByActionSourceItem):
+    pass
+
+
+class AudienceSource(Enum):
+    synced = 'synced'
+    platform = 'platform'
+    third_party = 'third_party'
+    lookalike = 'lookalike'
+    retargeting = 'retargeting'
+    unknown = 'unknown'
+
+
+class ByAudienceItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem11] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics11 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability11 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem11] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    audience_id: Annotated[
+        str,
+        Field(
+            description="Audience segment identifier. For 'synced' source, matches audience_id from sync_audiences. For other sources, seller-defined."
+        ),
+    ]
+    audience_source: Annotated[
+        AudienceSource,
+        Field(
+            description='Origin of the audience segment (synced, platform, third_party, lookalike, retargeting, unknown)',
+            title='Audience Source',
+        ),
+    ]
+    audience_name: Annotated[
+        str | None, Field(description='Human-readable audience segment name')
+    ] = None
+
+
+class ByEventTypeItem12(ByEventTypeItem):
+    pass
+
+
+class DoohMetrics12(DoohMetrics):
+    pass
+
+
+class Viewability12(Viewability):
+    pass
+
+
+class ByActionSourceItem12(ByActionSourceItem):
+    pass
+
+
+class ByPlacementItem(AdCPBaseModel):
+    impressions: Annotated[float, Field(description='Impressions delivered', ge=0.0)]
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem12] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics12 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability12 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem12] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    placement_id: Annotated[
+        str, Field(description="Placement identifier from the product's placements array")
+    ]
+    placement_name: Annotated[str | None, Field(description='Human-readable placement name')] = None
+
+
+class DailyBreakdownItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    date: Annotated[str, Field(description='Date (YYYY-MM-DD)', pattern='^\\d{4}-\\d{2}-\\d{2}$')]
+    impressions: Annotated[float, Field(description='Daily impressions for this package', ge=0.0)]
+    spend: Annotated[float, Field(description='Daily spend for this package', ge=0.0)]
+    conversions: Annotated[
+        float | None, Field(description='Daily conversions for this package', ge=0.0)
+    ] = None
+    conversion_value: Annotated[
+        float | None, Field(description='Daily conversion value for this package', ge=0.0)
+    ] = None
+    roas: Annotated[
+        float | None,
+        Field(description='Daily return on ad spend (conversion_value / spend)', ge=0.0),
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+
+
+class ByPackageItem(AdCPBaseModel):
+    impressions: Annotated[float | None, Field(description='Impressions delivered', ge=0.0)] = None
+    spend: Annotated[float, Field(description='Amount spent', ge=0.0)]
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
+    ] = None
+    views: Annotated[
+        float | None,
+        Field(
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
+        ),
+    ] = None
+    completed_views: Annotated[
+        float | None,
+        Field(
+            description='Video/audio completions. When the package has a completed_views optimization goal with view_duration_seconds, completions are counted at that threshold rather than 100% completion.',
+            ge=0.0,
+        ),
+    ] = None
+    completion_rate: Annotated[
+        float | None,
+        Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
+    ] = None
+    conversions: Annotated[
+        float | None,
+        Field(
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            ge=0.0,
+        ),
+    ] = None
+    conversion_value: Annotated[
+        float | None,
+        Field(
+            description='Total monetary value of attributed conversions (in the reporting currency)',
+            ge=0.0,
+        ),
+    ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
+    cost_per_acquisition: Annotated[
+        float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    leads: Annotated[
+        float | None,
+        Field(
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            ge=0.0,
+        ),
+    ] = None
+    by_event_type: Annotated[
+        list[ByEventTypeItem4] | None,
+        Field(
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+        ),
+    ] = None
+    grps: Annotated[
+        float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
+    ] = None
+    reach: Annotated[
+        float | None,
+        Field(
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            ge=0.0,
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+        ),
+    ] = None
+    frequency: Annotated[
+        float | None,
+        Field(
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
+            ge=0.0,
+        ),
+    ] = None
+    quartile_data: Annotated[
+        QuartileData | None, Field(description='Audio/video quartile completion data')
+    ] = None
+    dooh_metrics: Annotated[
+        DoohMetrics4 | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability4 | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
+        float | None,
+        Field(
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
+            ge=0.0,
+        ),
+    ] = None
+    follows: Annotated[
+        float | None,
+        Field(
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
+        ),
+    ] = None
+    saves: Annotated[
+        float | None,
+        Field(
+            description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
+        ),
+    ] = None
+    profile_visits: Annotated[
+        float | None,
+        Field(
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
+        ),
+    ] = None
+    engagement_rate: Annotated[
+        float | None,
+        Field(
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem4] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
+        ),
+    ] = None
+    package_id: Annotated[str, Field(description="Seller's package identifier")]
+    pacing_index: Annotated[
+        float | None,
+        Field(description='Delivery pace (1.0 = on track, <1.0 = behind, >1.0 = ahead)', ge=0.0),
+    ] = None
+    pricing_model: Annotated[
+        PricingModel,
+        Field(
+            description='The pricing model used for this package (e.g., cpm, cpcv, cpp). Indicates how the package is billed and which metrics are most relevant for optimization.',
+            title='Pricing Model',
+        ),
+    ]
+    rate: Annotated[
+        float,
+        Field(
+            description='The pricing rate for this package in the specified currency. For fixed-rate pricing, this is the agreed rate (e.g., CPM rate of 12.50 means $12.50 per 1,000 impressions). For auction-based pricing, this represents the effective rate based on actual delivery.',
+            ge=0.0,
+        ),
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description="ISO 4217 currency code (e.g., USD, EUR, GBP) for this package's pricing. Indicates the currency in which the rate and spend values are denominated. Different packages can use different currencies when supported by the publisher.",
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    delivery_status: Annotated[
+        DeliveryStatus | None,
+        Field(
+            description='System-reported operational state of this package. Reflects actual delivery state independent of buyer pause control.'
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None, Field(description='Whether this package is currently paused by the buyer')
+    ] = None
+    is_final: Annotated[
+        bool | None,
+        Field(
+            description='Whether this delivery data is final for the reporting period. When false, the data may be updated as measurement matures (e.g., broadcast C7 window accumulating DVR playback) or as processing completes (e.g., IVT filtering, deduplication). When true, the seller considers this data closed — no further updates for this period. Absent means the seller does not distinguish provisional from final data.'
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement window this data represents, referencing a window_id from the product's reporting_capabilities.measurement_windows. For broadcast: 'live', 'c3', 'c7'. When absent, the data is not windowed (standard digital reporting). When present with is_final: false, a later report for the same period will provide a wider window or more complete data.",
+            examples=['live', 'c3', 'c7'],
+            max_length=50,
+        ),
+    ] = None
+    supersedes_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement window this data replaces. Present on window_update notifications to indicate progression (e.g., 'live' when reporting C3 data that supersedes live-only numbers). Absent on the first report for a period. Buyers should replace stored data for the superseded window with this report's data.",
+            examples=['live', 'c3'],
+            max_length=50,
+        ),
+    ] = None
+    by_catalog_item: Annotated[
+        list[ByCatalogItemItem] | None,
+        Field(
+            description='Delivery by catalog item within this package. Available for catalog-driven packages when the seller supports item-level reporting.'
+        ),
+    ] = None
+    by_creative: Annotated[
+        list[ByCreativeItem] | None,
+        Field(
+            description='Metrics broken down by creative within this package. Available when the seller supports creative-level reporting.'
+        ),
+    ] = None
+    by_keyword: Annotated[
+        list[ByKeywordItem] | None,
+        Field(
+            description='Metrics broken down by keyword within this package. One row per (keyword, match_type) pair — the same keyword with different match types appears as separate rows. Keyword-grain only: rows reflect aggregate performance of each targeted keyword, not individual search queries. Rows may not sum to package totals when a single impression is attributed to the triggering keyword only. Available for search and retail media packages when the seller supports keyword-level reporting.'
+        ),
+    ] = None
+    by_geo: Annotated[
+        list[ByGeoItem] | None,
+        Field(
+            description="Delivery by geographic area within this package. Available when the buyer requests geo breakdown via reporting_dimensions and the seller supports it. Each dimension's rows are independent slices that should sum to the package total."
+        ),
+    ] = None
+    by_geo_truncated: Annotated[
+        bool | None,
+        Field(
+            description='Whether by_geo was truncated due to the requested limit or a seller-imposed maximum. Sellers MUST return this flag whenever by_geo is present (false means the list is complete).'
+        ),
+    ] = None
+    by_device_type: Annotated[
+        list[ByDeviceTypeItem] | None,
+        Field(
+            description='Delivery by device form factor within this package. Available when the buyer requests device_type breakdown via reporting_dimensions and the seller supports it.'
+        ),
+    ] = None
+    by_device_type_truncated: Annotated[
+        bool | None,
+        Field(
+            description='Whether by_device_type was truncated. Sellers MUST return this flag whenever by_device_type is present (false means the list is complete).'
+        ),
+    ] = None
+    by_device_platform: Annotated[
+        list[ByDevicePlatformItem] | None,
+        Field(
+            description='Delivery by operating system within this package. Available when the buyer requests device_platform breakdown via reporting_dimensions and the seller supports it. Useful for CTV campaigns where tvOS vs Roku OS vs Fire OS matters.'
+        ),
+    ] = None
+    by_device_platform_truncated: Annotated[
+        bool | None,
+        Field(
+            description='Whether by_device_platform was truncated. Sellers MUST return this flag whenever by_device_platform is present (false means the list is complete).'
+        ),
+    ] = None
+    by_audience: Annotated[
+        list[ByAudienceItem] | None,
+        Field(
+            description="Delivery by audience segment within this package. Available when the buyer requests audience breakdown via reporting_dimensions and the seller supports it. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational."
+        ),
+    ] = None
+    by_audience_truncated: Annotated[
+        bool | None,
+        Field(
+            description='Whether by_audience was truncated. Sellers MUST return this flag whenever by_audience is present (false means the list is complete).'
+        ),
+    ] = None
+    by_placement: Annotated[
+        list[ByPlacementItem] | None,
+        Field(
+            description="Delivery by placement within this package. Available when the buyer requests placement breakdown via reporting_dimensions and the seller supports it. Placement IDs reference the product's placements array."
+        ),
+    ] = None
+    by_placement_truncated: Annotated[
+        bool | None,
+        Field(
+            description='Whether by_placement was truncated. Sellers MUST return this flag whenever by_placement is present (false means the list is complete).'
+        ),
+    ] = None
+    daily_breakdown: Annotated[
+        list[DailyBreakdownItem] | None,
+        Field(
+            description='Day-by-day delivery for this package. Only present when include_package_daily_breakdown is true in the request. Enables per-package pacing analysis and line-item monitoring.'
+        ),
+    ] = None
+
+
+class DailyBreakdownItem3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    date: Annotated[str, Field(description='Date (YYYY-MM-DD)', pattern='^\\d{4}-\\d{2}-\\d{2}$')]
+    impressions: Annotated[float, Field(description='Daily impressions', ge=0.0)]
+    spend: Annotated[float, Field(description='Daily spend', ge=0.0)]
+    conversions: Annotated[float | None, Field(description='Daily conversions', ge=0.0)] = None
+    conversion_value: Annotated[
+        float | None, Field(description='Daily conversion value', ge=0.0)
+    ] = None
+    roas: Annotated[
+        float | None,
+        Field(description='Daily return on ad spend (conversion_value / spend)', ge=0.0),
+    ] = None
+    new_to_brand_rate: Annotated[
+        float | None,
+        Field(
+            description='Daily fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+
+
+class MediaBuyDelivery(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    media_buy_id: Annotated[str, Field(description="Seller's media buy identifier")]
+    status: Annotated[
+        Status,
+        Field(
+            description='Current media buy status. Lifecycle states use the same taxonomy as media-buy-status (`pending_creatives`, `pending_start`, `active`, `paused`, `completed`, `rejected`, `canceled`). In webhook context, reporting_delayed indicates data temporarily unavailable. `pending` is accepted as a legacy alias for pending_start.'
+        ),
+    ]
+    expected_availability: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When delayed data is expected to be available (only present when status is reporting_delayed)'
+        ),
+    ] = None
+    is_adjusted: Annotated[
+        bool | None,
+        Field(
+            description='Indicates this delivery contains updated data for a previously reported period. Buyer should replace previous period data with these totals.'
+        ),
+    ] = None
+    pricing_model: Annotated[
+        PricingModel | None,
+        Field(description='Pricing model used for this media buy', title='Pricing Model'),
+    ] = None
+    totals: Totals
+    by_package: Annotated[list[ByPackageItem], Field(description='Metrics broken down by package')]
+    daily_breakdown: Annotated[
+        list[DailyBreakdownItem3] | None, Field(description='Day-by-day delivery')
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class GetMediaBuyDeliveryResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    notification_type: Annotated[
+        NotificationType | None,
+        Field(
+            description='Type of webhook notification (only present in webhook deliveries): scheduled = regular periodic update, final = campaign completed, delayed = data not yet available, adjusted = resending period with corrected data (same window), window_update = resending period with a wider measurement window (e.g., C3 superseding live, C7 superseding C3)'
+        ),
+    ] = None
+    partial_data: Annotated[
+        bool | None,
+        Field(
+            description='Indicates if any media buys in this webhook have missing/delayed data (only present in webhook deliveries)'
+        ),
+    ] = None
+    unavailable_count: Annotated[
+        int | None,
+        Field(
+            description='Number of media buys with reporting_delayed or failed status (only present in webhook deliveries when partial_data is true)',
+            ge=0,
+        ),
+    ] = None
+    sequence_number: Annotated[
+        int | None,
+        Field(
+            description='Sequential notification number (only present in webhook deliveries, starts at 1)',
+            ge=1,
+        ),
+    ] = None
+    next_expected_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="ISO 8601 timestamp for next expected notification (only present in webhook deliveries when notification_type is not 'final')"
+        ),
+    ] = None
+    reporting_period: Annotated[
+        ReportingPeriod,
+        Field(description='Date range for the report. All periods use UTC timezone.'),
+    ]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description='Attribution methodology and lookback windows used for conversion metrics in this response. All media buys from a single seller share the same attribution methodology. Enables cross-platform comparison (e.g., Amazon 14-day click vs. Criteo 30-day click).',
+            title='Attribution Window',
+        ),
+    ] = None
+    aggregated_totals: Annotated[
+        AggregatedTotals | None,
+        Field(
+            description='Combined metrics across all returned media buys. Only included in API responses (get_media_buy_delivery), not in webhook notifications.'
+        ),
+    ] = None
+    media_buy_deliveries: Annotated[
+        list[MediaBuyDelivery],
+        Field(
+            description='Array of delivery data for media buys. When used in webhook notifications, may contain multiple media buys aggregated by publisher. When used in get_media_buy_delivery API responses, typically contains requested media buys.'
+        ),
+    ]
+    errors: Annotated[
+        list[Error] | None,
+        Field(
+            description='Task-specific errors and warnings (e.g., missing delivery data, reporting platform issues)'
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/get_media_buys_request.py b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buys_request.py
new file mode 100644
index 000000000..e1701ae46
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buys_request.py
@@ -0,0 +1,191 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/get_media_buys_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field, RootModel
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account19(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class StatusFilter(Enum):
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
+    active = 'active'
+    paused = 'paused'
+    completed = 'completed'
+    rejected = 'rejected'
+    canceled = 'canceled'
+
+
+class StatusFilter5(RootModel[list[StatusFilter]]):
+    root: Annotated[
+        list[StatusFilter],
+        Field(
+            description='Filter by status. Can be a single status or array of statuses. Defaults to ["active"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied.',
+            min_length=1,
+        ),
+    ]
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class GetMediaBuysRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account19 | None,
+        Field(
+            description='Account to retrieve media buys for. When omitted, returns data across all accessible accounts.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    media_buy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Array of media buy IDs to retrieve. When omitted, returns a paginated set of accessible media buys matching status_filter.',
+            min_length=1,
+        ),
+    ] = None
+    status_filter: Annotated[
+        StatusFilter | StatusFilter5 | None,
+        Field(
+            description='Filter by status. Can be a single status or array of statuses. Defaults to ["active"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied.'
+        ),
+    ] = None
+    include_snapshot: Annotated[
+        bool | None,
+        Field(
+            description='When true, include a near-real-time delivery snapshot for each package. Snapshots reflect the latest available entity-level stats from the platform (e.g., updated every ~15 minutes on GAM, ~1 hour on batch-only platforms). The staleness_seconds field on each snapshot indicates data freshness. If a snapshot cannot be returned, package.snapshot_unavailable_reason explains why. Defaults to false.'
+        ),
+    ] = False
+    include_history: Annotated[
+        int | None,
+        Field(
+            description='When present, include the last N revision history entries for each media buy (returns min(N, available entries)). Each entry contains revision number, timestamp, actor, and a summary of what changed. Omit or set to 0 to exclude history (default). Recommended: 5-10 for monitoring, 50+ for audit.',
+            ge=0,
+            le=1000,
+        ),
+    ] = 0
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Cursor-based pagination controls. Strongly recommended when querying broad scopes (for example, all active media buys in an account).',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/get_media_buys_response.py b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buys_response.py
new file mode 100644
index 000000000..8695b11be
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/get_media_buys_response.py
@@ -0,0 +1,1215 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/get_media_buys_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel
+
+
+class Status(Enum):
+    active = 'active'
+    pending_approval = 'pending_approval'
+    rejected = 'rejected'
+    payment_required = 'payment_required'
+    suspended = 'suspended'
+    closed = 'closed'
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Billing(Enum):
+    operator = 'operator'
+    agent = 'agent'
+    advertiser = 'advertiser'
+
+
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
+    ]
+    city: Annotated[str, Field(max_length=100)]
+    postal_code: Annotated[str, Field(max_length=20)]
+    region: Annotated[
+        str | None, Field(description='State, province, or region', max_length=100)
+    ] = None
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    ]
+
+
+class Role(Enum):
+    billing = 'billing'
+    legal = 'legal'
+    creative = 'creative'
+    general = 'general'
+
+
+class Contact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    role: Annotated[
+        Role, Field(description="Contact's functional role in the business relationship")
+    ]
+    name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
+        None
+    )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    phone: Annotated[str | None, Field(max_length=30)] = None
+
+
+class Bank(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
+    ] = None
+    bic: Annotated[
+        str | None,
+        Field(
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+        ),
+    ] = None
+    routing_number: Annotated[
+        str | None,
+        Field(
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
+        ),
+    ] = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class BillingEntity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PaymentTerms(Enum):
+    net_15 = 'net_15'
+    net_30 = 'net_30'
+    net_45 = 'net_45'
+    net_60 = 'net_60'
+    net_90 = 'net_90'
+    prepay = 'prepay'
+
+
+class CreditLimit(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
+
+
+class Setup(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where the human can complete the required action (credit application, legal agreement, add funds).'
+        ),
+    ] = None
+    message: Annotated[str, Field(description="Human-readable description of what's needed.")]
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='When this setup link expires.')
+    ] = None
+
+
+class AccountScope(Enum):
+    operator = 'operator'
+    brand = 'brand'
+    operator_brand = 'operator_brand'
+    agent = 'agent'
+
+
+class Category(RootModel[str]):
+    root: Annotated[str, Field(max_length=64, pattern='^[a-z][a-z0-9_]*$')]
+
+
+class GovernanceAgent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL. Must use HTTPS.')]
+    categories: Annotated[
+        list[Category] | None,
+        Field(
+            description="Governance categories this agent handles (e.g., ['budget_authority', 'strategic_alignment']). When omitted, the agent handles all categories.",
+            max_length=20,
+        ),
+    ] = None
+
+
+class Protocol(Enum):
+    s3 = 's3'
+    gcs = 'gcs'
+    azure_blob = 'azure_blob'
+
+
+class Format(Enum):
+    jsonl = 'jsonl'
+    csv = 'csv'
+    parquet = 'parquet'
+    avro = 'avro'
+    orc = 'orc'
+
+
+class Compression(Enum):
+    gzip = 'gzip'
+    none = 'none'
+
+
+class ReportingBucket(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    protocol: Annotated[
+        Protocol, Field(description='Cloud storage protocol', title='Cloud Storage Protocol')
+    ]
+    bucket: Annotated[
+        str,
+        Field(
+            description='Bucket or container name',
+            max_length=63,
+            min_length=3,
+            pattern='^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$',
+        ),
+    ]
+    prefix: Annotated[
+        str | None,
+        Field(
+            description='Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.',
+            examples=['accounts/pinnacle/adcp', 'reporting/2024'],
+            max_length=512,
+            pattern='^[a-zA-Z0-9/_.-]+$',
+        ),
+    ] = None
+    region: Annotated[
+        str | None,
+        Field(
+            description='Cloud region for the bucket',
+            examples=['us-east-1', 'europe-west1'],
+            max_length=64,
+            pattern='^[a-z0-9-]+$',
+        ),
+    ] = None
+    format: Annotated[
+        Format | None,
+        Field(
+            description='File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).'
+        ),
+    ] = Format.jsonl
+    compression: Annotated[
+        Compression | None, Field(description='Compression applied to delivered files')
+    ] = Compression.gzip
+    file_retention_days: Annotated[
+        int,
+        Field(
+            description='How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.',
+            examples=[14, 30, 90],
+            ge=1,
+        ),
+    ]
+    setup_instructions: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation — buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery.'
+        ),
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    account_id: Annotated[str, Field(description='Unique identifier for this account')]
+    name: Annotated[
+        str, Field(description="Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')")
+    ]
+    advertiser: Annotated[
+        str | None, Field(description='The advertiser whose rates apply to this account')
+    ] = None
+    billing_proxy: Annotated[
+        str | None,
+        Field(
+            description='Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)'
+        ),
+    ] = None
+    status: Annotated[
+        Status,
+        Field(
+            description='Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.',
+            title='Account Status',
+        ),
+    ]
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    operator: Annotated[
+        str | None,
+        Field(
+            description="Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ] = None
+    billing: Annotated[
+        Billing | None,
+        Field(
+            description="Who is invoiced on this account. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. See billing_entity for the invoiced party's business details."
+        ),
+    ] = None
+    billing_entity: Annotated[
+        BillingEntity | None,
+        Field(
+            description='Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).',
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    rate_card: Annotated[
+        str | None, Field(description='Identifier for the rate card applied to this account')
+    ] = None
+    payment_terms: Annotated[
+        PaymentTerms | None,
+        Field(
+            description='Payment terms agreed for this account. Binding for all invoices when the account is active.'
+        ),
+    ] = None
+    credit_limit: Annotated[
+        CreditLimit | None, Field(description='Maximum outstanding balance allowed')
+    ] = None
+    setup: Annotated[
+        Setup | None,
+        Field(
+            description="Present when status is 'pending_approval'. Contains next steps for completing account activation."
+        ),
+    ] = None
+    account_scope: Annotated[
+        AccountScope | None,
+        Field(
+            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+        ),
+    ] = None
+    governance_agents: Annotated[
+        list[GovernanceAgent] | None,
+        Field(
+            description='Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses — use sync_governance to set or update credentials.',
+            max_length=10,
+        ),
+    ] = None
+    reporting_bucket: Annotated[
+        ReportingBucket | None,
+        Field(
+            description="Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix — bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities)."
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, this is a sandbox account — no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Contact7(Contact):
+    pass
+
+
+class InvoiceRecipient(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact7] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Status11(Enum):
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
+    active = 'active'
+    paused = 'paused'
+    completed = 'completed'
+    rejected = 'rejected'
+    canceled = 'canceled'
+
+
+class CanceledBy(Enum):
+    buyer = 'buyer'
+    seller = 'seller'
+
+
+class Cancellation(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    canceled_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when this media buy was canceled.')
+    ]
+    canceled_by: Annotated[
+        CanceledBy,
+        Field(description='Which party initiated the cancellation.', title='Canceled By'),
+    ]
+    reason: Annotated[
+        str | None, Field(description='Reason the media buy was canceled.', max_length=500)
+    ] = None
+
+
+class ValidAction(Enum):
+    pause = 'pause'
+    resume = 'resume'
+    cancel = 'cancel'
+    update_budget = 'update_budget'
+    update_dates = 'update_dates'
+    update_packages = 'update_packages'
+    add_packages = 'add_packages'
+    sync_creatives = 'sync_creatives'
+
+
+class HistoryItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    revision: Annotated[
+        int, Field(description='Revision number after this change was applied.', ge=1)
+    ]
+    timestamp: Annotated[AwareDatetime, Field(description='When this change occurred.')]
+    actor: Annotated[
+        str | None,
+        Field(
+            description='Identity of who made the change — derived from authentication context, not caller-provided. Format is seller-defined (e.g., agent URL, user email, API key label).'
+        ),
+    ] = None
+    action: Annotated[
+        str,
+        Field(
+            description='What happened. Standard actions: created, activated, paused, resumed, canceled, rejected, completed, updated_budget, updated_dates, updated_packages, package_canceled, package_paused, package_resumed. Sellers MAY use additional platform-specific actions (e.g., creative_approved, targeting_updated) — use ext on the history entry for structured metadata about custom actions.'
+        ),
+    ]
+    summary: Annotated[
+        str | None,
+        Field(
+            description="Human-readable summary of the change (e.g., 'Budget increased from $5,000 to $7,500 on pkg_abc').",
+            max_length=500,
+        ),
+    ] = None
+    package_id: Annotated[
+        str | None,
+        Field(description='Package affected, when the change targeted a specific package.'),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Cancellation4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    canceled_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when this package was canceled.')
+    ]
+    canceled_by: Annotated[
+        CanceledBy,
+        Field(description='Which party initiated the package cancellation.', title='Canceled By'),
+    ]
+    reason: Annotated[
+        str | None, Field(description='Reason the package was canceled.', max_length=500)
+    ] = None
+
+
+class ApprovalStatus(Enum):
+    pending_review = 'pending_review'
+    approved = 'approved'
+    rejected = 'rejected'
+
+
+class CreativeApproval(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Creative identifier')]
+    approval_status: Annotated[
+        ApprovalStatus,
+        Field(
+            description='Approval state of a creative on a specific package',
+            title='Creative Approval Status',
+        ),
+    ]
+    rejection_reason: Annotated[
+        str | None,
+        Field(
+            description="Human-readable explanation of why the creative was rejected. Present only when approval_status is 'rejected'."
+        ),
+    ] = None
+
+
+class FormatIdsPendingItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class SnapshotUnavailableReason(Enum):
+    SNAPSHOT_UNSUPPORTED = 'SNAPSHOT_UNSUPPORTED'
+    SNAPSHOT_TEMPORARILY_UNAVAILABLE = 'SNAPSHOT_TEMPORARILY_UNAVAILABLE'
+    SNAPSHOT_PERMISSION_DENIED = 'SNAPSHOT_PERMISSION_DENIED'
+
+
+class DeliveryStatus(Enum):
+    delivering = 'delivering'
+    not_delivering = 'not_delivering'
+    completed = 'completed'
+    budget_exhausted = 'budget_exhausted'
+    flight_ended = 'flight_ended'
+    goal_met = 'goal_met'
+
+
+class Snapshot(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    as_of: Annotated[
+        AwareDatetime,
+        Field(description='ISO 8601 timestamp when this snapshot was captured by the platform'),
+    ]
+    staleness_seconds: Annotated[
+        int,
+        Field(
+            description='Maximum age of this data in seconds. For example, 900 means the data may be up to 15 minutes old. Use this to interpret zero delivery: a value of 900 means zero impressions is likely real; a value of 14400 means reporting may still be catching up.',
+            ge=0,
+        ),
+    ]
+    impressions: Annotated[
+        float, Field(description='Total impressions delivered since package start', ge=0.0)
+    ]
+    spend: Annotated[
+        float,
+        Field(
+            description='Total spend since package start, denominated in snapshot.currency when present, otherwise package.currency or media_buy.currency',
+            ge=0.0,
+        ),
+    ]
+    currency: Annotated[
+        str | None,
+        Field(
+            description='ISO 4217 currency code for spend in this snapshot. Optional when unchanged from package.currency or media_buy.currency.',
+            pattern='^[A-Z]{3}$',
+        ),
+    ] = None
+    clicks: Annotated[
+        float | None, Field(description='Total clicks since package start (when available)', ge=0.0)
+    ] = None
+    pacing_index: Annotated[
+        float | None,
+        Field(
+            description='Current delivery pace relative to expected (1.0 = on track, <1.0 = behind, >1.0 = ahead). Absent when pacing cannot be determined.',
+            ge=0.0,
+        ),
+    ] = None
+    delivery_status: Annotated[
+        DeliveryStatus | None,
+        Field(
+            description="Operational delivery state of this package. 'not_delivering' means the package is within its scheduled flight but has delivered zero impressions for at least one full staleness cycle — the signal for automated price adjustments or buyer alerts. Implementers must not return 'not_delivering' until at least staleness_seconds have elapsed since package activation."
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Optional extension object for seller-specific snapshot fields.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Package(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    package_id: Annotated[str, Field(description="Seller's package identifier")]
+    product_id: Annotated[
+        str | None, Field(description='Product identifier this package is purchased from')
+    ] = None
+    budget: Annotated[
+        float | None,
+        Field(
+            description='Package budget amount, denominated in package.currency when present, otherwise media_buy.currency',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str | None,
+        Field(
+            description='ISO 4217 currency code for monetary values at this package level (budget, bid_price, snapshot.spend). When absent, inherit media_buy.currency.',
+            pattern='^[A-Z]{3}$',
+        ),
+    ] = None
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description='Current bid price for auction-based packages. Denominated in package.currency when present, otherwise media_buy.currency. Relevant for automated price optimization loops.',
+            ge=0.0,
+        ),
+    ] = None
+    impressions: Annotated[
+        float | None,
+        Field(description='Goal impression count for impression-based packages', ge=0.0),
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 flight start time for this package. Use to determine whether the package is within its scheduled flight before interpreting delivery status.'
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 flight end time for this package')
+    ] = None
+    paused: Annotated[
+        bool | None, Field(description='Whether this package is currently paused by the buyer')
+    ] = None
+    canceled: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated.'
+        ),
+    ] = None
+    cancellation: Annotated[
+        Cancellation4 | None,
+        Field(description='Cancellation metadata. Present only when canceled is true.'),
+    ] = None
+    creative_deadline: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
+        ),
+    ] = None
+    creative_approvals: Annotated[
+        list[CreativeApproval] | None,
+        Field(
+            description='Approval status for each creative assigned to this package. Absent when no creatives have been assigned.'
+        ),
+    ] = None
+    format_ids_pending: Annotated[
+        list[FormatIdsPendingItem] | None,
+        Field(
+            description='Format IDs from the original create_media_buy format_ids_to_provide that have not yet been uploaded via sync_creatives. When empty or absent, all required formats have been provided.'
+        ),
+    ] = None
+    snapshot_unavailable_reason: Annotated[
+        SnapshotUnavailableReason | None,
+        Field(
+            description='Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot is unavailable for this package.'
+        ),
+    ] = None
+    snapshot: Annotated[
+        Snapshot | None,
+        Field(
+            description='Near-real-time delivery snapshot for this package. Only present when include_snapshot was true in the request. Represents the latest available entity-level stats from the platform — not billing-grade data.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class MediaBuy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    media_buy_id: Annotated[str, Field(description="Seller's unique identifier for the media buy")]
+    account: Annotated[
+        Account | None,
+        Field(
+            description='Account billed for this media buy',
+            examples=[
+                {
+                    'description': 'Direct advertiser account',
+                    'data': {
+                        'account_id': 'acc_acme_direct',
+                        'name': 'Acme',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'acme-corp.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Advertiser account with agency billing proxy',
+                    'data': {
+                        'account_id': 'acc_acme_pinnacle',
+                        'name': 'Acme c/o Pinnacle',
+                        'advertiser': 'Acme Corp',
+                        'billing_proxy': 'Pinnacle Media',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator_brand',
+                        'rate_card': 'acme_vip_2024',
+                        'payment_terms': 'net_60',
+                    },
+                },
+                {
+                    'description': 'Agency as direct buyer',
+                    'data': {
+                        'account_id': 'acc_pinnacle',
+                        'name': 'Pinnacle',
+                        'advertiser': 'Pinnacle Media',
+                        'brand': {'domain': 'pinnacle-media.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'operator',
+                        'account_scope': 'operator',
+                        'rate_card': 'agency_standard',
+                        'payment_terms': 'net_45',
+                    },
+                },
+                {
+                    'description': 'Account with brand identity and operator (via sync_accounts)',
+                    'data': {
+                        'account_id': 'acc_spark_001',
+                        'name': 'Spark (via Pinnacle)',
+                        'advertiser': 'Nova Brands',
+                        'status': 'active',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'agent',
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+                {
+                    'description': 'Pending account awaiting seller approval',
+                    'data': {
+                        'account_id': 'acc_glow_pending',
+                        'name': 'Glow',
+                        'advertiser': 'Nova Brands',
+                        'status': 'pending_approval',
+                        'brand': {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                        'operator': 'pinnacle-media.com',
+                        'billing': 'operator',
+                        'account_scope': 'brand',
+                    },
+                },
+                {
+                    'description': 'Agency operates but advertiser is billed directly with structured billing entity',
+                    'data': {
+                        'account_id': 'acc_acme_direct_bill',
+                        'name': 'Acme (billed direct)',
+                        'advertiser': 'Acme Corp',
+                        'brand': {'domain': 'acme-corp.com'},
+                        'operator': 'pinnacle-media.com',
+                        'status': 'active',
+                        'billing': 'advertiser',
+                        'billing_entity': {
+                            'legal_name': 'Acme Corporation GmbH',
+                            'vat_id': 'DE987654321',
+                            'address': {
+                                'street': 'Hauptstrasse 42',
+                                'city': 'Munich',
+                                'postal_code': '80331',
+                                'country': 'DE',
+                            },
+                            'contacts': [
+                                {
+                                    'role': 'billing',
+                                    'name': 'AP Department',
+                                    'email': 'billing@acme-corp.com',
+                                }
+                            ],
+                        },
+                        'account_scope': 'operator_brand',
+                        'payment_terms': 'net_30',
+                    },
+                },
+            ],
+            title='Account',
+        ),
+    ] = None
+    invoice_recipient: Annotated[
+        InvoiceRecipient | None,
+        Field(
+            description='Per-buy invoice recipient when provided at creation. Confirms the seller accepted the billing override. Bank details are omitted (write-only).',
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    status: Annotated[
+        Status11, Field(description='Status of a media buy.', title='Media Buy Status')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code (e.g., USD, EUR, GBP) for monetary values at this media buy level. total_budget is always denominated in this currency. Package-level fields may override with package.currency.',
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    total_budget: Annotated[
+        float,
+        Field(
+            description='Total budget amount across all packages, denominated in media_buy.currency',
+            ge=0.0,
+        ),
+    ]
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 flight start time for this media buy (earliest package start_time). Avoids requiring buyers to compute min(packages[].start_time).'
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 flight end time for this media buy (latest package end_time). Avoids requiring buyers to compute max(packages[].end_time).'
+        ),
+    ] = None
+    creative_deadline: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 timestamp for creative upload deadline')
+    ] = None
+    confirmed_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation.'
+        ),
+    ] = None
+    cancellation: Annotated[
+        Cancellation | None,
+        Field(description="Cancellation metadata. Present only when status is 'canceled'."),
+    ] = None
+    revision: Annotated[
+        int | None,
+        Field(
+            description='Current revision number. Pass this in update_media_buy for optimistic concurrency.',
+            ge=1,
+        ),
+    ] = None
+    created_at: Annotated[AwareDatetime | None, Field(description='Creation timestamp')] = None
+    updated_at: Annotated[AwareDatetime | None, Field(description='Last update timestamp')] = None
+    valid_actions: Annotated[
+        list[ValidAction] | None,
+        Field(
+            description='Actions the buyer can perform on this media buy in its current state. Eliminates the need for agents to internalize the state machine — the seller declares what is permitted right now.'
+        ),
+    ] = None
+    history: Annotated[
+        list[HistoryItem] | None,
+        Field(
+            description='Revision history entries, most recent first. Only present when include_history > 0 in the request. Each entry represents a state change or update to the media buy. Entries are append-only: sellers MUST NOT modify or delete previously emitted history entries. Callers MAY cache entries by revision number. Returns min(N, available entries) when include_history exceeds the total.'
+        ),
+    ] = None
+    packages: Annotated[
+        list[Package],
+        Field(
+            description='Packages within this media buy, augmented with creative approval status and optional delivery snapshots'
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class GetMediaBuysResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    media_buys: Annotated[
+        list[MediaBuy],
+        Field(
+            description='Array of media buys with status, creative approval state, and optional delivery snapshots'
+        ),
+    ]
+    errors: Annotated[
+        list[Error] | None, Field(description='Task-specific errors (e.g., media buy not found)')
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Pagination metadata for the media_buys array.', title='Pagination Response'
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/get_products_request.py b/src/adcp/types/generated_poc/bundled/media_buy/get_products_request.py
new file mode 100644
index 000000000..e130fa9db
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/get_products_request.py
@@ -0,0 +1,1507 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/get_products_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from datetime import date as date_aliased
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+
+class BuyingMode(Enum):
+    brief = 'brief'
+    wholesale = 'wholesale'
+    refine = 'refine'
+
+
+class Refine(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    scope: Annotated[
+        Literal['request'],
+        Field(
+            description='Change scoped to the overall request — direction for the selection as a whole.'
+        ),
+    ]
+    ask: Annotated[
+        str,
+        Field(
+            description="What the buyer is asking for at the request level (e.g., 'more video options and less display', 'suggest how to combine these products').",
+            min_length=1,
+        ),
+    ]
+
+
+class Action(Enum):
+    include = 'include'
+    omit = 'omit'
+    more_like_this = 'more_like_this'
+
+
+class Refine4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    scope: Annotated[Literal['product'], Field(description='Change scoped to a specific product.')]
+    id: Annotated[
+        str, Field(description='Product ID from a previous get_products response.', min_length=1)
+    ]
+    action: Annotated[
+        Action,
+        Field(
+            description="'include': return this product with updated pricing and data. 'omit': exclude this product from the response. 'more_like_this': find additional products similar to this one (the original is also returned)."
+        ),
+    ]
+    ask: Annotated[
+        str | None,
+        Field(
+            description="What the buyer is asking for on this product. For 'include': specific changes to request (e.g., 'add 16:9 format'). For 'more_like_this': what 'similar' means (e.g., 'same audience but video format'). Ignored when action is 'omit'.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Action5(Enum):
+    include = 'include'
+    omit = 'omit'
+    finalize = 'finalize'
+
+
+class Refine5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    scope: Annotated[
+        Literal['proposal'], Field(description='Change scoped to a specific proposal.')
+    ]
+    id: Annotated[
+        str, Field(description='Proposal ID from a previous get_products response.', min_length=1)
+    ]
+    action: Annotated[
+        Action5,
+        Field(
+            description="'include': return this proposal with updated allocations and pricing. 'omit': exclude this proposal from the response. 'finalize': request firm pricing and inventory hold — transitions a draft proposal to committed with an expires_at hold window. May trigger seller-side approval (HITL). The buyer should not set a time_budget for finalize requests — they represent a commitment to wait for the result."
+        ),
+    ]
+    ask: Annotated[
+        str | None,
+        Field(
+            description="What the buyer is asking for on this proposal (e.g., 'shift more budget toward video', 'reduce total by 10%'). Ignored when action is 'omit'.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Account22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class PreferredDeliveryType(Enum):
+    guaranteed = 'guaranteed'
+    non_guaranteed = 'non_guaranteed'
+
+
+class Exclusivity(Enum):
+    none = 'none'
+    category = 'category'
+    exclusive = 'exclusive'
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class BudgetRange(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[float, Field(description='Minimum budget amount', ge=0.0)]
+    max: Annotated[float | None, Field(description='Maximum budget amount', ge=0.0)] = None
+    currency: Annotated[
+        str,
+        Field(
+            description="ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')", pattern='^[A-Z]{3}$'
+        ),
+    ]
+
+
+class BudgetRange1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[float | None, Field(description='Minimum budget amount', ge=0.0)] = None
+    max: Annotated[float, Field(description='Maximum budget amount', ge=0.0)]
+    currency: Annotated[
+        str,
+        Field(
+            description="ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')", pattern='^[A-Z]{3}$'
+        ),
+    ]
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class Region(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]+$')]
+
+
+class System(Enum):
+    nielsen_dma = 'nielsen_dma'
+    uk_itl1 = 'uk_itl1'
+    uk_itl2 = 'uk_itl2'
+    eurostat_nuts2 = 'eurostat_nuts2'
+    custom = 'custom'
+
+
+class Metro(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System, Field(description='Metro classification system', title='Metro Area System')
+    ]
+    code: Annotated[
+        str, Field(description="Metro code within the system (e.g., '501' for NYC DMA)")
+    ]
+
+
+class Channel(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class Provider(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[AnyUrl, Field(description="Provider's agent URL from the registry.")]
+    context_match: Annotated[
+        bool | None, Field(description='When true, require this provider to support context match.')
+    ] = None
+    identity_match: Annotated[
+        bool | None,
+        Field(description='When true, require this provider to support identity match.'),
+    ] = None
+
+
+class ResponseType(Enum):
+    activation = 'activation'
+    catalog_items = 'catalog_items'
+    creative = 'creative'
+    deal = 'deal'
+
+
+class TrustedMatch(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    providers: Annotated[
+        list[Provider] | None,
+        Field(
+            description='Filter to products with specific TMP providers and match types. Each entry identifies a provider by agent_url and optionally requires specific match capabilities. Products must match at least one entry.',
+            min_length=1,
+        ),
+    ] = None
+    response_types: Annotated[
+        list[ResponseType] | None,
+        Field(
+            description="Filter to products supporting specific TMP response types (e.g., 'activation', 'creative', 'catalog_items'). Products must support at least one of the listed types.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class RequiredFeatures(AdCPBaseModel):
+    inline_creative_management: Annotated[
+        bool | None,
+        Field(description='Supports creatives provided inline in create_media_buy requests'),
+    ] = None
+    property_list_filtering: Annotated[
+        bool | None,
+        Field(
+            description='Honors property_list parameter in get_products to filter results to buyer-approved properties'
+        ),
+    ] = None
+    catalog_management: Annotated[
+        bool | None,
+        Field(
+            description='Supports sync_catalogs task for catalog feed management with platform review and approval'
+        ),
+    ] = None
+
+
+class Level(Enum):
+    country = 'country'
+    region = 'region'
+    metro = 'metro'
+    postal_area = 'postal_area'
+
+
+class RequiredGeoTargetingItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    level: Annotated[
+        Level,
+        Field(
+            description='Geographic targeting level (country, region, metro, postal_area)',
+            title='Geographic Targeting Level',
+        ),
+    ]
+    system: Annotated[
+        str | None,
+        Field(
+            description="Classification system within the level. Required for metro (e.g., 'nielsen_dma') and postal_area (e.g., 'us_zip'). Not applicable for country/region which use ISO standards."
+        ),
+    ] = None
+
+
+class SignalId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['catalog'],
+        Field(
+            description="Discriminator indicating this signal is from a data provider's published catalog"
+        ),
+    ]
+    data_provider_domain: Annotated[
+        str,
+        Field(
+            description="Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class SignalId9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['agent'],
+        Field(
+            description='Discriminator indicating this signal is native to the agent (not from a data provider catalog)'
+        ),
+    ]
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class SignalTargeting1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    signal_id: Annotated[
+        SignalId | SignalId9,
+        Field(description='The signal to target', discriminator='source', title='Signal ID'),
+    ]
+    value_type: Annotated[Literal['binary'], Field(description='Discriminator for binary signals')]
+    value: Annotated[
+        bool,
+        Field(
+            description='Whether to include (true) or exclude (false) users matching this signal'
+        ),
+    ]
+
+
+
+class SignalTargeting2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    signal_id: Annotated[
+        SignalId | SignalId9,
+        Field(description='The signal to target', discriminator='source', title='Signal ID'),
+    ]
+    value_type: Annotated[
+        Literal['categorical'], Field(description='Discriminator for categorical signals')
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description='Values to target. Users with any of these values will be included.',
+            min_length=1,
+        ),
+    ]
+
+
+
+class SignalTargeting3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    signal_id: Annotated[
+        SignalId | SignalId9,
+        Field(description='The signal to target', discriminator='source', title='Signal ID'),
+    ]
+    value_type: Annotated[
+        Literal['numeric'], Field(description='Discriminator for numeric signals')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(
+            description="Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided. Should be >= signal's range.min if defined."
+        ),
+    ] = None
+    max_value: Annotated[
+        float | None,
+        Field(
+            description="Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided. Should be <= signal's range.max if defined."
+        ),
+    ] = None
+
+
+class SignalTargeting(RootModel[SignalTargeting1 | SignalTargeting2 | SignalTargeting3]):
+    root: Annotated[
+        SignalTargeting1 | SignalTargeting2 | SignalTargeting3,
+        Field(
+            description='Targeting constraint for a specific signal. Uses value_type as discriminator to determine the targeting expression format.',
+            discriminator='value_type',
+            title='Signal Targeting',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class System11(Enum):
+    us_zip = 'us_zip'
+    us_zip_plus_four = 'us_zip_plus_four'
+    gb_outward = 'gb_outward'
+    gb_full = 'gb_full'
+    ca_fsa = 'ca_fsa'
+    ca_full = 'ca_full'
+    de_plz = 'de_plz'
+    fr_code_postal = 'fr_code_postal'
+    au_postcode = 'au_postcode'
+    ch_plz = 'ch_plz'
+    at_plz = 'at_plz'
+
+
+class PostalArea(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System11,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward')",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class Unit(Enum):
+    min = 'min'
+    hr = 'hr'
+
+
+class TravelTime(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Travel time limit', ge=1.0)]
+    unit: Annotated[Unit, Field(description='Time unit')]
+
+
+class TransportMode(Enum):
+    walking = 'walking'
+    cycling = 'cycling'
+    driving = 'driving'
+    public_transport = 'public_transport'
+
+
+class Unit47(Enum):
+    km = 'km'
+    mi = 'mi'
+    m = 'm'
+
+
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance', gt=0.0)]
+    unit: Annotated[Unit47, Field(description='Distance unit', title='Distance Unit')]
+
+
+class Type39(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
+
+
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type39, Field(description='GeoJSON geometry type')]
+    coordinates: Annotated[list[Any], Field(description='GeoJSON coordinates array')]
+
+
+class GeoProximity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float, Field(description='Latitude in decimal degrees (WGS 84)', ge=-90.0, le=90.0)
+    ]
+    lng: Annotated[
+        float, Field(description='Longitude in decimal degrees (WGS 84)', ge=-180.0, le=180.0)
+    ]
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
+    ] = None
+    travel_time: Annotated[
+        TravelTime, Field(description='Travel time limit for isochrone calculation')
+    ]
+    transport_mode: Annotated[
+        TransportMode,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ]
+    radius: Annotated[Radius | None, Field(description='Simple radius from the point')] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
+    ] = None
+
+
+class TravelTime8(TravelTime):
+    pass
+
+
+class Radius8(Radius):
+    pass
+
+
+class Geometry8(Geometry):
+    pass
+
+
+class GeoProximity9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float, Field(description='Latitude in decimal degrees (WGS 84)', ge=-90.0, le=90.0)
+    ]
+    lng: Annotated[
+        float, Field(description='Longitude in decimal degrees (WGS 84)', ge=-180.0, le=180.0)
+    ]
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
+    ] = None
+    travel_time: Annotated[
+        TravelTime8 | None, Field(description='Travel time limit for isochrone calculation')
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[Radius8, Field(description='Simple radius from the point')]
+    geometry: Annotated[
+        Geometry8 | None,
+        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
+    ] = None
+
+
+class TravelTime9(TravelTime):
+    pass
+
+
+class Radius9(Radius):
+    pass
+
+
+class Geometry9(Geometry):
+    pass
+
+
+class GeoProximity10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float | None, Field(description='Latitude in decimal degrees (WGS 84)', ge=-90.0, le=90.0)
+    ] = None
+    lng: Annotated[
+        float | None,
+        Field(description='Longitude in decimal degrees (WGS 84)', ge=-180.0, le=180.0),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
+    ] = None
+    travel_time: Annotated[
+        TravelTime9 | None, Field(description='Travel time limit for isochrone calculation')
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[Radius9 | None, Field(description='Simple radius from the point')] = None
+    geometry: Annotated[
+        Geometry9,
+        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
+    ]
+
+
+class Metric(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class Vendor(Brand):
+    pass
+
+
+class RequiredPerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        Metric,
+        Field(
+            description='The performance metric this standard applies to.',
+            title='Performance Standard Metric',
+        ),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            title='Viewability Standard',
+        ),
+    ] = None
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+
+
+class MatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class Keyword(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[
+        MatchType | None,
+        Field(
+            description='Desired match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly. Defaults to broad.'
+        ),
+    ] = MatchType.broad
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        PreferredDeliveryType | None,
+        Field(description='Type of inventory delivery', title='Delivery Type'),
+    ] = None
+    exclusivity: Annotated[
+        Exclusivity | None,
+        Field(
+            description="Filter by exclusivity level. Returns products matching the specified exclusivity (e.g., 'exclusive' returns only sole-sponsorship products).",
+            title='Exclusivity',
+        ),
+    ] = None
+    is_fixed_price: Annotated[
+        bool | None,
+        Field(
+            description='Filter by pricing availability: true = products offering fixed pricing (at least one option with fixed_price), false = products offering auction pricing (at least one option without fixed_price). Products with both fixed and auction options match both true and false.'
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId] | None, Field(description='Filter by specific format IDs', min_length=1)
+    ] = None
+    standard_formats_only: Annotated[
+        bool | None, Field(description='Only return products accepting IAB standard formats')
+    ] = None
+    min_exposures: Annotated[
+        int | None,
+        Field(description='Minimum exposures/impressions needed for measurement validity', ge=1),
+    ] = None
+    start_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='Campaign start date (ISO 8601 date format: YYYY-MM-DD) for availability checks'
+        ),
+    ] = None
+    end_date: Annotated[
+        date_aliased | None,
+        Field(
+            description='Campaign end date (ISO 8601 date format: YYYY-MM-DD) for availability checks'
+        ),
+    ] = None
+    budget_range: Annotated[
+        BudgetRange | BudgetRange1 | None,
+        Field(description='Budget range to filter appropriate products'),
+    ] = None
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description="Filter by country coverage using ISO 3166-1 alpha-2 codes (e.g., ['US', 'CA', 'GB']). Works for all inventory types.",
+            min_length=1,
+        ),
+    ] = None
+    regions: Annotated[
+        list[Region] | None,
+        Field(
+            description="Filter by region coverage using ISO 3166-2 codes (e.g., ['US-NY', 'US-CA', 'GB-SCT']). Use for locally-bound inventory (regional OOH, local TV) where products have region-specific coverage.",
+            min_length=1,
+        ),
+    ] = None
+    metros: Annotated[
+        list[Metro] | None,
+        Field(
+            description='Filter by metro coverage for locally-bound inventory (radio, DOOH, local TV). Use when products have DMA/metro-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.',
+            min_length=1,
+        ),
+    ] = None
+    channels: Annotated[
+        list[Channel] | None,
+        Field(
+            description="Filter by advertising channels (e.g., ['display', 'ctv', 'dooh'])",
+            min_length=1,
+        ),
+    ] = None
+    required_axe_integrations: Annotated[
+        list[AnyUrl] | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.',
+        ),
+    ] = None
+    trusted_match: Annotated[
+        TrustedMatch | None,
+        Field(
+            description='Filter products by Trusted Match Protocol capabilities. Only products with matching TMP support are returned.'
+        ),
+    ] = None
+    required_features: Annotated[
+        RequiredFeatures | None,
+        Field(
+            description='Filter to products from sellers supporting specific protocol features. Only features set to true are used for filtering.',
+            title='Media Buy Features',
+        ),
+    ] = None
+    required_geo_targeting: Annotated[
+        list[RequiredGeoTargetingItem] | None,
+        Field(
+            description='Filter to products from sellers supporting specific geo targeting capabilities. Each entry specifies a targeting level (country, region, metro, postal_area) and optionally a system for levels that have multiple classification systems.',
+            min_length=1,
+        ),
+    ] = None
+    signal_targeting: Annotated[
+        list[SignalTargeting] | None,
+        Field(
+            description='Filter to products supporting specific signals from data provider catalogs. Products must have the requested signals in their data_provider_signals and signal_targeting_allowed must be true (or all signals requested).',
+            min_length=1,
+        ),
+    ] = None
+    postal_areas: Annotated[
+        list[PostalArea] | None,
+        Field(
+            description='Filter by postal area coverage for locally-bound inventory (direct mail, DOOH, local campaigns). Use when products have postal-area-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.',
+            min_length=1,
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity9 | GeoProximity10] | None,
+        Field(
+            description='Filter by proximity to geographic points. Returns products with inventory coverage near these locations. Follows the same format as the targeting overlay — each entry uses exactly one method: travel_time + transport_mode, radius, or geometry. For locally-bound inventory (DOOH, radio), filters to products with coverage in the area. For digital inventory, filters to products from sellers supporting geo_proximity targeting.',
+            min_length=1,
+        ),
+    ] = None
+    required_performance_standards: Annotated[
+        list[RequiredPerformanceStandard] | None,
+        Field(
+            description="Filter to products that can meet the buyer's performance standard requirements. Each entry specifies a metric, minimum threshold, and optionally a required vendor and standard. Products that cannot meet these thresholds or do not support the specified vendors are excluded. Use this to tell the seller upfront: 'I need DoubleVerify for viewability at 70% MRC.'",
+            min_length=1,
+        ),
+    ] = None
+    keywords: Annotated[
+        list[Keyword] | None,
+        Field(
+            description='Filter by keyword relevance for search and retail media platforms. Returns products that support keyword targeting for these terms. Allows the sell-side agent to assess keyword availability and recommend appropriate products. Use match_type to indicate the desired precision.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class PropertyList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the property list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the property list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class Field1(Enum):
+    product_id = 'product_id'
+    name = 'name'
+    description = 'description'
+    publisher_properties = 'publisher_properties'
+    channels = 'channels'
+    format_ids = 'format_ids'
+    placements = 'placements'
+    delivery_type = 'delivery_type'
+    exclusivity = 'exclusivity'
+    pricing_options = 'pricing_options'
+    forecast = 'forecast'
+    outcome_measurement = 'outcome_measurement'
+    delivery_measurement = 'delivery_measurement'
+    reporting_capabilities = 'reporting_capabilities'
+    creative_policy = 'creative_policy'
+    catalog_types = 'catalog_types'
+    metric_optimization = 'metric_optimization'
+    conversion_tracking = 'conversion_tracking'
+    data_provider_signals = 'data_provider_signals'
+    max_optimization_goals = 'max_optimization_goals'
+    catalog_match = 'catalog_match'
+    collections = 'collections'
+    collection_targeting_allowed = 'collection_targeting_allowed'
+    installments = 'installments'
+    brief_relevance = 'brief_relevance'
+    expires_at = 'expires_at'
+    product_card = 'product_card'
+    product_card_detailed = 'product_card_detailed'
+    enforced_policies = 'enforced_policies'
+    trusted_match = 'trusted_match'
+
+
+class Unit52(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class TimeBudget(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit52,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class GetProductsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    buying_mode: Annotated[
+        BuyingMode,
+        Field(
+            description="Declares buyer intent for this request. 'brief': publisher curates product recommendations from the provided brief. 'wholesale': buyer requests raw inventory to apply their own audiences — brief must not be provided, and proposals are omitted. 'refine': iterate on products and proposals from a previous get_products response using the refine array of change requests. v3 clients MUST include buying_mode. Sellers receiving requests from pre-v3 clients without buying_mode SHOULD default to 'brief'."
+        ),
+    ]
+    brief: Annotated[
+        str | None,
+        Field(
+            description="Natural language description of campaign requirements. Required when buying_mode is 'brief'. Must not be provided when buying_mode is 'wholesale' or 'refine'."
+        ),
+    ] = None
+    refine: Annotated[
+        list[Refine | Refine4 | Refine5] | None,
+        Field(
+            description="Array of change requests for iterating on products and proposals from a previous get_products response. Each entry declares a scope (request, product, or proposal) and what the buyer is asking for. Only valid when buying_mode is 'refine'. The seller responds to each entry via refinement_applied in the response, matched by position.",
+            min_length=1,
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference for product discovery context. Resolved to full brand identity at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    catalog: Annotated[
+        Catalog | None,
+        Field(
+            description='Catalog of items the buyer wants to promote. The seller matches catalog items against its inventory and returns products where matches exist. Supports all catalog types: a job catalog finds job ad products, a product catalog finds sponsored product slots. Reference a synced catalog by catalog_id, or provide inline items.',
+            examples=[
+                {
+                    'description': 'Synced product catalog from Google Merchant Center',
+                    'data': {
+                        'catalog_id': 'gmc-primary',
+                        'name': 'Primary Product Feed',
+                        'type': 'product',
+                        'url': 'https://feeds.acmecorp.com/products.xml',
+                        'feed_format': 'google_merchant_center',
+                        'update_frequency': 'daily',
+                    },
+                },
+                {
+                    'description': 'Inventory feed for store-level stock data',
+                    'data': {
+                        'catalog_id': 'store-inventory',
+                        'name': 'Store Inventory',
+                        'type': 'inventory',
+                        'url': 'https://feeds.acmecorp.com/inventory.json',
+                        'feed_format': 'custom',
+                        'update_frequency': 'hourly',
+                    },
+                },
+                {
+                    'description': 'Store locator feed',
+                    'data': {
+                        'catalog_id': 'retail-locations',
+                        'name': 'Retail Locations',
+                        'type': 'store',
+                        'url': 'https://feeds.acmecorp.com/stores.json',
+                        'feed_format': 'custom',
+                        'update_frequency': 'weekly',
+                    },
+                },
+                {
+                    'description': 'Promotional pricing feed',
+                    'data': {
+                        'catalog_id': 'summer-sale',
+                        'name': 'Summer Sale Promotions',
+                        'type': 'promotion',
+                        'url': 'https://feeds.acmecorp.com/promotions.json',
+                        'feed_format': 'google_merchant_center',
+                        'update_frequency': 'daily',
+                    },
+                },
+                {
+                    'description': 'Inline offering catalog (no sync needed)',
+                    'data': {
+                        'type': 'offering',
+                        'items': [
+                            {
+                                'offering_id': 'summer-sale',
+                                'name': 'Summer Sale',
+                                'landing_url': 'https://acme.com/summer',
+                            }
+                        ],
+                    },
+                },
+                {
+                    'description': 'Reference to a previously synced catalog by ID',
+                    'data': {
+                        'catalog_id': 'gmc-primary',
+                        'type': 'product',
+                        'ids': ['SKU-12345', 'SKU-67890'],
+                    },
+                },
+                {
+                    'description': 'Product catalog with GTIN cross-retailer matching and attribution',
+                    'data': {
+                        'type': 'product',
+                        'gtins': ['00013000006040', '00013000006057'],
+                        'content_id_type': 'gtin',
+                        'conversion_events': ['purchase', 'add_to_cart'],
+                    },
+                },
+                {
+                    'description': 'Inline store catalog with catchment areas',
+                    'data': {
+                        'catalog_id': 'retail-locations',
+                        'name': 'Retail Locations',
+                        'type': 'store',
+                        'items': [
+                            {
+                                'store_id': 'amsterdam-flagship',
+                                'name': 'Amsterdam Flagship',
+                                'location': {'lat': 52.3676, 'lng': 4.9041},
+                                'catchments': [
+                                    {
+                                        'catchment_id': 'walk',
+                                        'travel_time': {'value': 10, 'unit': 'min'},
+                                        'transport_mode': 'walking',
+                                    },
+                                    {
+                                        'catchment_id': 'drive',
+                                        'travel_time': {'value': 15, 'unit': 'min'},
+                                        'transport_mode': 'driving',
+                                    },
+                                ],
+                            }
+                        ],
+                    },
+                },
+            ],
+            title='Catalog',
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account22 | None,
+        Field(
+            description="Account for product lookup. Returns products with pricing specific to this account's rate card.",
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    preferred_delivery_types: Annotated[
+        list[PreferredDeliveryType] | None,
+        Field(
+            description='Delivery types the buyer prefers, in priority order. Unlike filters.delivery_type which excludes non-matching products, this signals preference for curation — the publisher may still include other delivery types when they match the brief well.',
+            min_length=1,
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(description='Structured filters for product discovery', title='Product Filters'),
+    ] = None
+    property_list: Annotated[
+        PropertyList | None,
+        Field(
+            description='[AdCP 3.0] Reference to an externally managed property list. When provided, the sales agent should filter products to only those available on properties in the list.',
+            title='Property List Reference',
+        ),
+    ] = None
+    fields: Annotated[
+        list[Field1] | None,
+        Field(
+            description='Specific product fields to include in the response. When omitted, all fields are returned. Use for lightweight discovery calls where only a subset of product data is needed (e.g., just IDs and pricing for comparison). Required fields (product_id, name) are always included regardless of selection.',
+            min_length=1,
+        ),
+    ] = None
+    time_budget: Annotated[
+        TimeBudget | None,
+        Field(
+            description='Maximum time the buyer will commit to this request. The seller returns the best results achievable within this budget and does not start processes (human approvals, expensive external queries) that cannot complete in time. When omitted, the seller decides timing.'
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    required_policies: Annotated[
+        list[str] | None,
+        Field(
+            description='Registry policy IDs that the buyer requires to be enforced for products in this response. Sellers filter products to only those that comply with or already enforce the requested policies.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/get_products_response.py b/src/adcp/types/generated_poc/bundled/media_buy/get_products_response.py
new file mode 100644
index 000000000..5fe24f347
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/get_products_response.py
@@ -0,0 +1,4510 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/get_products_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel
+
+
+class PublisherProperties1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    selection_type: Annotated[
+        Literal['all'],
+        Field(
+            description='Discriminator indicating all properties from this publisher are included'
+        ),
+    ]
+
+
+class PropertyId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.',
+            examples=['cnn_ctv_app', 'homepage', 'mobile_ios', 'instagram'],
+            pattern='^[a-z0-9_]+$',
+            title='Property ID',
+        ),
+    ]
+
+
+class PublisherProperties2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    selection_type: Annotated[
+        Literal['by_id'],
+        Field(description='Discriminator indicating selection by specific property IDs'),
+    ]
+    property_ids: Annotated[
+        list[PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
+
+
+class PropertyTag(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.',
+            examples=['ctv', 'premium', 'news', 'sports', 'meta_network', 'social_media'],
+            pattern='^[a-z0-9_]+$',
+            title='Property Tag',
+        ),
+    ]
+
+
+class PublisherProperties3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'cnn.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    selection_type: Annotated[
+        Literal['by_tag'], Field(description='Discriminator indicating selection by property tags')
+    ]
+    property_tags: Annotated[
+        list[PropertyTag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selector covers all properties with these tags",
+            min_length=1,
+        ),
+    ]
+
+
+class PublisherProperties(
+    RootModel[PublisherProperties1 | PublisherProperties2 | PublisherProperties3]
+):
+    root: Annotated[
+        PublisherProperties1 | PublisherProperties2 | PublisherProperties3,
+        Field(
+            description="Selects properties from a publisher's adagents.json. Used for both product definitions and agent authorization. Supports three selection patterns: all properties, specific IDs, or by tags.",
+            discriminator='selection_type',
+            title='Publisher Property Selector',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Channel(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Placement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    placement_id: Annotated[
+        str, Field(description='Unique identifier for the placement within the product')
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description="Human-readable name for the placement (e.g., 'Homepage Banner', 'Article Sidebar')"
+        ),
+    ]
+    description: Annotated[
+        str | None, Field(description='Detailed description of where and how the placement appears')
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional tags for grouping placements within a product (e.g., 'homepage', 'native', 'premium'). When the placement_id comes from the publisher registry, these should align with the registry tags unless the product is narrowing scope."
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Format IDs supported by this specific placement. Can include: (1) concrete format_ids (fixed dimensions), (2) template format_ids without parameters (accepts any dimensions/duration), or (3) parameterized format_ids (specific dimension/duration constraints).',
+            min_length=1,
+        ),
+    ] = None
+
+
+class DeliveryType(Enum):
+    guaranteed = 'guaranteed'
+    non_guaranteed = 'non_guaranteed'
+
+
+class Exclusivity(Enum):
+    none = 'none'
+    category = 'category'
+    exclusive = 'exclusive'
+
+
+class PriceGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    p25: Annotated[
+        float | None, Field(description='25th percentile of recent winning bids', ge=0.0)
+    ] = None
+    p50: Annotated[float | None, Field(description='Median of recent winning bids', ge=0.0)] = None
+    p75: Annotated[
+        float | None, Field(description='75th percentile of recent winning bids', ge=0.0)
+    ] = None
+    p90: Annotated[
+        float | None, Field(description='90th percentile of recent winning bids', ge=0.0)
+    ] = None
+
+
+class Kind(Enum):
+    fee = 'fee'
+    discount = 'discount'
+    commission = 'commission'
+    settlement = 'settlement'
+
+
+class Adjustments(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Annotated[
+        Kind,
+        Field(
+            description='Categorizes how a price adjustment affects the transaction',
+            title='Price Adjustment Kind',
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description='Specific adjustment name. Use well-known values where applicable for interoperability.',
+            examples=[
+                'ad_serving',
+                'data_targeting',
+                'brand_safety',
+                'volume',
+                'negotiated',
+                'early_booking',
+                'agency',
+                'intermediary',
+                'cash_discount',
+                'early_payment',
+            ],
+            max_length=64,
+        ),
+    ]
+    rate: Annotated[
+        float,
+        Field(
+            description='Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive — kind determines the economic effect. Mutually exclusive with amount.',
+            gt=0.0,
+            lt=1.0,
+        ),
+    ]
+    amount: Annotated[
+        float | None,
+        Field(
+            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
+            gt=0.0,
+        ),
+    ] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            max_length=256,
+        ),
+    ] = None
+    beneficiary: Annotated[
+        str | None,
+        Field(
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            max_length=256,
+        ),
+    ] = None
+
+
+class Adjustments3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Annotated[
+        Kind,
+        Field(
+            description='Categorizes how a price adjustment affects the transaction',
+            title='Price Adjustment Kind',
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description='Specific adjustment name. Use well-known values where applicable for interoperability.',
+            examples=[
+                'ad_serving',
+                'data_targeting',
+                'brand_safety',
+                'volume',
+                'negotiated',
+                'early_booking',
+                'agency',
+                'intermediary',
+                'cash_discount',
+                'early_payment',
+            ],
+            max_length=64,
+        ),
+    ]
+    rate: Annotated[
+        float | None,
+        Field(
+            description='Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive — kind determines the economic effect. Mutually exclusive with amount.',
+            gt=0.0,
+            lt=1.0,
+        ),
+    ] = None
+    amount: Annotated[
+        float,
+        Field(
+            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
+            gt=0.0,
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            max_length=256,
+        ),
+    ] = None
+    beneficiary: Annotated[
+        str | None,
+        Field(
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            max_length=256,
+        ),
+    ] = None
+
+
+class PriceBreakdown(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments | Adjustments3],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpm'], Field(description='Cost per 1,000 impressions')]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Fixed price per unit. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    max_bid: Annotated[
+        bool | None,
+        Field(
+            description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
+        ),
+    ] = False
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class Adjustments4(Adjustments):
+    pass
+
+
+class Adjustments5(Adjustments3):
+    pass
+
+
+class PriceBreakdown3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments4 | Adjustments5],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['vcpm'], Field(description='Cost per 1,000 viewable impressions (MRC standard)')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Fixed price per unit. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    max_bid: Annotated[
+        bool | None,
+        Field(
+            description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
+        ),
+    ] = False
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown3 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class Adjustments6(Adjustments):
+    pass
+
+
+class Adjustments7(Adjustments3):
+    pass
+
+
+class PriceBreakdown4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments6 | Adjustments7],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpc'], Field(description='Cost per click')]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Fixed price per click. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    max_bid: Annotated[
+        bool | None,
+        Field(
+            description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
+        ),
+    ] = False
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown4 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class Adjustments8(Adjustments):
+    pass
+
+
+class Adjustments9(Adjustments3):
+    pass
+
+
+class PriceBreakdown5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments8 | Adjustments9],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['cpcv'], Field(description='Cost per completed view (100% completion)')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Fixed price per completed view. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    max_bid: Annotated[
+        bool | None,
+        Field(
+            description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
+        ),
+    ] = False
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown5 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class ViewThreshold(RootModel[float]):
+    root: Annotated[
+        float,
+        Field(
+            description='Percentage completion threshold (0.0 to 1.0, e.g., 0.5 = 50%)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+
+
+class ViewThreshold3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    duration_seconds: Annotated[int, Field(description='Seconds of viewing required', ge=1)]
+
+
+class Parameters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    view_threshold: ViewThreshold | ViewThreshold3
+
+
+class Adjustments10(Adjustments):
+    pass
+
+
+class Adjustments11(Adjustments3):
+    pass
+
+
+class PriceBreakdown6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments10 | Adjustments11],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpv'], Field(description='Cost per view at threshold')]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Fixed price per view. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    max_bid: Annotated[
+        bool | None,
+        Field(
+            description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
+        ),
+    ] = False
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    parameters: Annotated[
+        Parameters, Field(description='CPV-specific parameters defining the view threshold')
+    ]
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown6 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class DemographicSystem(Enum):
+    nielsen = 'nielsen'
+    barb = 'barb'
+    agf = 'agf'
+    oztam = 'oztam'
+    mediametrie = 'mediametrie'
+    custom = 'custom'
+
+
+class Parameters4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    demographic_system: Annotated[
+        DemographicSystem | None,
+        Field(
+            description='Measurement system for the demographic field. Defaults to nielsen when omitted.',
+            title='Demographic System',
+        ),
+    ] = None
+    demographic: Annotated[
+        str,
+        Field(
+            description='Target demographic code within the specified demographic_system (e.g., P18-49 for Nielsen, ABC1 Adults for BARB)'
+        ),
+    ]
+    min_points: Annotated[float | None, Field(description='Minimum GRPs/TRPs required', ge=0.0)] = (
+        None
+    )
+
+
+class Adjustments12(Adjustments):
+    pass
+
+
+class Adjustments13(Adjustments3):
+    pass
+
+
+class PriceBreakdown7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments12 | Adjustments13],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpp'], Field(description='Cost per Gross Rating Point')]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Fixed price per rating point. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    parameters: Annotated[
+        Parameters4, Field(description='CPP-specific parameters for demographic targeting')
+    ]
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown7 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class EventType(AdCPBaseModel):
+    pass
+
+
+class Adjustments14(Adjustments):
+    pass
+
+
+class Adjustments15(Adjustments3):
+    pass
+
+
+class PriceBreakdown8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments14 | Adjustments15],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['cpa'], Field(description='Cost per acquisition (conversion event)')
+    ]
+    event_type: Annotated[
+        EventType,
+        Field(
+            description='The conversion event type that triggers billing (e.g., purchase, lead, app_install)'
+        ),
+    ]
+    custom_event_name: Annotated[
+        str | None,
+        Field(
+            description="Name of the custom event when event_type is 'custom'. Required when event_type is 'custom', ignored otherwise."
+        ),
+    ] = None
+    event_source_id: Annotated[
+        str | None,
+        Field(
+            description='When present, only events from this specific event source count toward billing. Allows different CPA rates for different sources (e.g., online vs in-store purchases). Must match an event source configured via sync_event_sources.'
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float, Field(description='Fixed price per acquisition in the specified currency', gt=0.0)
+    ]
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown8 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class Parameters5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['dooh'], Field(description='Discriminator identifying this as DOOH parameters')
+    ]
+    sov_percentage: Annotated[
+        float | None,
+        Field(description='Guaranteed share of voice as a percentage (0-100)', ge=0.0, le=100.0),
+    ] = None
+    loop_duration_seconds: Annotated[
+        int | None, Field(description='Duration of the ad loop rotation in seconds', ge=1)
+    ] = None
+    min_plays_per_hour: Annotated[
+        int | None, Field(description='Minimum number of plays per hour guaranteed', ge=1)
+    ] = None
+    venue_package: Annotated[
+        str | None, Field(description='Named collection of screens included in this buy')
+    ] = None
+    duration_hours: Annotated[
+        float | None,
+        Field(
+            description='Duration of the DOOH slot in hours (e.g., 24 for a full-day takeover)',
+            ge=0.0,
+        ),
+    ] = None
+    daypart: Annotated[
+        str | None,
+        Field(description='Named daypart for this slot (e.g., morning_commute, evening_rush)'),
+    ] = None
+    estimated_impressions: Annotated[
+        int | None,
+        Field(
+            description='Estimated audience impressions for this slot (informational, not a delivery guarantee)',
+            ge=0,
+        ),
+    ] = None
+
+
+class Adjustments16(Adjustments):
+    pass
+
+
+class Adjustments17(Adjustments3):
+    pass
+
+
+class PriceBreakdown9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments16 | Adjustments17],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['flat_rate'], Field(description='Fixed cost regardless of delivery volume')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Flat rate cost. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    parameters: Annotated[
+        Parameters5 | None,
+        Field(
+            description='DOOH inventory allocation parameters. Sponsorship and takeover flat_rate options omit this field entirely — only include for digital out-of-home inventory.',
+            title='DoohParameters',
+        ),
+    ] = None
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown9 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class TimeUnit(Enum):
+    hour = 'hour'
+    day = 'day'
+    week = 'week'
+    month = 'month'
+
+
+class Parameters6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    time_unit: Annotated[
+        TimeUnit,
+        Field(
+            description='The time unit for pricing. Total cost = fixed_price × number of time_units in the campaign flight.'
+        ),
+    ]
+    min_duration: Annotated[
+        int | None, Field(description='Minimum booking duration in time_units', ge=1)
+    ] = None
+    max_duration: Annotated[
+        int | None,
+        Field(
+            description='Maximum booking duration in time_units. Must be >= min_duration when both are present.',
+            ge=1,
+        ),
+    ] = None
+
+
+class Adjustments18(Adjustments):
+    pass
+
+
+class Adjustments19(Adjustments3):
+    pass
+
+
+class PriceBreakdown10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments18 | Adjustments19],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class PricingOptions8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['time'],
+        Field(description='Cost per time unit - rate scales with campaign duration'),
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    fixed_price: Annotated[
+        float | None,
+        Field(
+            description='Cost per time unit. If present, this is fixed pricing. If absent, auction-based.',
+            ge=0.0,
+        ),
+    ] = None
+    floor_price: Annotated[
+        float | None,
+        Field(
+            description='Minimum acceptable bid per time unit for auction pricing (mutually exclusive with fixed_price). Bids below this value will be rejected.',
+            ge=0.0,
+        ),
+    ] = None
+    price_guidance: Annotated[
+        PriceGuidance | None,
+        Field(
+            description='Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.',
+            title='Price Guidance',
+        ),
+    ] = None
+    parameters: Annotated[Parameters6, Field(description='Time-based pricing parameters')]
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown10 | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    eligible_adjustments: Annotated[
+        list[Kind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
+
+
+class AudienceSize(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    low: Annotated[
+        float | None, Field(description='Conservative (low-end) forecast value', ge=0.0)
+    ] = None
+    mid: Annotated[float, Field(description='Expected (most likely) forecast value', ge=0.0)]
+    high: Annotated[
+        float | None, Field(description='Optimistic (high-end) forecast value', ge=0.0)
+    ] = None
+
+
+class AudienceSize1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    low: Annotated[float, Field(description='Conservative (low-end) forecast value', ge=0.0)]
+    mid: Annotated[
+        float | None, Field(description='Expected (most likely) forecast value', ge=0.0)
+    ] = None
+    high: Annotated[float, Field(description='Optimistic (high-end) forecast value', ge=0.0)]
+
+
+class Reach(AudienceSize):
+    pass
+
+
+class Reach1(AudienceSize1):
+    pass
+
+
+class Frequency(AudienceSize):
+    pass
+
+
+class Frequency1(AudienceSize1):
+    pass
+
+
+class Impressions(AudienceSize):
+    pass
+
+
+class Impressions1(AudienceSize1):
+    pass
+
+
+class Clicks(AudienceSize):
+    pass
+
+
+class Clicks1(AudienceSize1):
+    pass
+
+
+class Spend(AudienceSize):
+    pass
+
+
+class Spend2(AudienceSize1):
+    pass
+
+
+class Views(AudienceSize):
+    pass
+
+
+class Views1(AudienceSize1):
+    pass
+
+
+class CompletedViews(AudienceSize):
+    pass
+
+
+class CompletedViews1(AudienceSize1):
+    pass
+
+
+class Grps(AudienceSize):
+    pass
+
+
+class Grps1(AudienceSize1):
+    pass
+
+
+class Engagements(AudienceSize):
+    pass
+
+
+class Engagements1(AudienceSize1):
+    pass
+
+
+class Follows(AudienceSize):
+    pass
+
+
+class Follows1(AudienceSize1):
+    pass
+
+
+class Saves(AudienceSize):
+    pass
+
+
+class Saves1(AudienceSize1):
+    pass
+
+
+class ProfileVisits(AudienceSize):
+    pass
+
+
+class ProfileVisits1(AudienceSize1):
+    pass
+
+
+class MeasuredImpressions(AudienceSize):
+    pass
+
+
+class MeasuredImpressions1(AudienceSize1):
+    pass
+
+
+class Downloads(AudienceSize):
+    pass
+
+
+class Downloads1(AudienceSize1):
+    pass
+
+
+class Plays(AudienceSize):
+    pass
+
+
+class Plays1(AudienceSize1):
+    pass
+
+
+class Metrics(AdCPBaseModel):
+    audience_size: Annotated[
+        AudienceSize | AudienceSize1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    reach: Annotated[
+        Reach | Reach1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    frequency: Annotated[
+        Frequency | Frequency1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    impressions: Annotated[
+        Impressions | Impressions1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    clicks: Annotated[
+        Clicks | Clicks1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    spend: Annotated[
+        Spend | Spend2 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    views: Annotated[
+        Views | Views1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    completed_views: Annotated[
+        CompletedViews | CompletedViews1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    grps: Annotated[
+        Grps | Grps1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    engagements: Annotated[
+        Engagements | Engagements1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    follows: Annotated[
+        Follows | Follows1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    saves: Annotated[
+        Saves | Saves1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    profile_visits: Annotated[
+        ProfileVisits | ProfileVisits1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    measured_impressions: Annotated[
+        MeasuredImpressions | MeasuredImpressions1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    downloads: Annotated[
+        Downloads | Downloads1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    plays: Annotated[
+        Plays | Plays1 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+
+
+class Point(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+            examples=['Primetime', 'Morning Drive', 'Large Format Transit'],
+            max_length=128,
+        ),
+    ] = None
+    budget: Annotated[
+        float | None,
+        Field(
+            description='Budget amount for this forecast point. Required for spend curves; omit for availability forecasts where the metrics represent total available inventory. For allocation-level forecasts, this is the absolute budget for that allocation (not the percentage). For proposal-level forecasts, this is the total proposal budget. When omitted, use metrics.spend to express the estimated cost of the available inventory.',
+            ge=0.0,
+        ),
+    ] = None
+    metrics: Annotated[
+        Metrics,
+        Field(
+            description='Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { "mid": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory — use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).'
+        ),
+    ]
+
+
+class ForecastRangeUnit(Enum):
+    spend = 'spend'
+    availability = 'availability'
+    reach_freq = 'reach_freq'
+    weekly = 'weekly'
+    daily = 'daily'
+    clicks = 'clicks'
+    conversions = 'conversions'
+    package = 'package'
+
+
+class Method(Enum):
+    estimate = 'estimate'
+    modeled = 'modeled'
+    guaranteed = 'guaranteed'
+
+
+class ReachUnit(Enum):
+    individuals = 'individuals'
+    households = 'households'
+    devices = 'devices'
+    accounts = 'accounts'
+    cookies = 'cookies'
+    custom = 'custom'
+
+
+class Forecast(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    points: Annotated[
+        list[Point],
+        Field(
+            description='Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.',
+            min_length=1,
+        ),
+    ]
+    forecast_range_unit: Annotated[
+        ForecastRangeUnit | None,
+        Field(
+            description="How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package.",
+            title='Forecast Range Unit',
+        ),
+    ] = None
+    method: Annotated[
+        Method, Field(description='Method used to produce this forecast', title='Forecast Method')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code for monetary values in this forecast (spend, budget)'
+        ),
+    ]
+    demographic_system: Annotated[
+        DemographicSystem | None,
+        Field(
+            description='Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation.',
+            title='Demographic System',
+        ),
+    ] = None
+    demographic: Annotated[
+        str | None,
+        Field(
+            description='Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.',
+            examples=['P18-49', 'A25-54', 'W35+', 'M18-34'],
+        ),
+    ] = None
+    measurement_source: Annotated[
+        str | None,
+        Field(
+            description='Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation — measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.',
+            examples=[
+                'nielsen',
+                'videoamp',
+                'comscore',
+                'geopath',
+                'barb',
+                'agf',
+                'oztam',
+                'kantar',
+                'barc',
+                'route',
+                'rajar',
+                'triton',
+            ],
+            max_length=64,
+            pattern='^[a-z0-9_]+$',
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison.',
+            title='Reach Unit',
+        ),
+    ] = None
+    generated_at: Annotated[
+        AwareDatetime | None, Field(description='When this forecast was computed')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class Window(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class OutcomeMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        str,
+        Field(
+            description='Type of measurement',
+            examples=['incremental_sales_lift', 'brand_lift', 'foot_traffic'],
+        ),
+    ]
+    attribution: Annotated[
+        str,
+        Field(
+            description='Attribution methodology',
+            examples=['deterministic_purchase', 'probabilistic'],
+        ),
+    ]
+    window: Annotated[
+        Window | None,
+        Field(
+            description='Attribution window as a structured duration (e.g., {"interval": 30, "unit": "days"}).'
+        ),
+    ] = None
+    reporting: Annotated[
+        str,
+        Field(
+            description='Reporting frequency and format',
+            examples=['weekly_dashboard', 'real_time_api'],
+        ),
+    ]
+
+
+class DeliveryMeasurement(AdCPBaseModel):
+    provider: Annotated[
+        str,
+        Field(
+            description="Measurement provider(s) used for this product (e.g., 'Google Ad Manager with IAS viewability', 'Nielsen DAR', 'Geopath for DOOH impressions')"
+        ),
+    ]
+    notes: Annotated[
+        str | None,
+        Field(
+            description="Additional details about measurement methodology in plain language (e.g., 'MRC-accredited viewability. 50% in-view for 1s display / 2s video', 'Panel-based demographic measurement updated monthly')"
+        ),
+    ] = None
+
+
+class Vendor(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class BillingMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    max_variance_percent: Annotated[
+        float | None,
+        Field(
+            description="Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review).",
+            ge=0.0,
+            lt=100.0,
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=[
+                'live',
+                'c3',
+                'c7',
+                'tentative',
+                'final',
+                'post_ivt',
+                'post_sivt',
+                'downloads_30d',
+            ],
+        ),
+    ] = None
+
+
+class AvailableRemedy(Enum):
+    additional_delivery = 'additional_delivery'
+    credit = 'credit'
+    invoice_adjustment = 'invoice_adjustment'
+
+
+class MakegoodPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_remedies: Annotated[
+        list[AvailableRemedy],
+        Field(
+            description='Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.',
+            min_length=1,
+        ),
+    ]
+
+
+class MeasurementTerms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    billing_measurement: Annotated[
+        BillingMeasurement | None,
+        Field(
+            description="Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV)."
+        ),
+    ] = None
+    makegood_policy: Annotated[
+        MakegoodPolicy | None,
+        Field(
+            description='Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.'
+        ),
+    ] = None
+
+
+class Metric(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class PerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        Metric,
+        Field(
+            description='The performance metric this standard applies to.',
+            title='Performance Standard Metric',
+        ),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            title='Viewability Standard',
+        ),
+    ] = None
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+
+
+class NoticePeriod(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class Type(Enum):
+    percent_remaining = 'percent_remaining'
+    full_commitment = 'full_commitment'
+    fixed_fee = 'fixed_fee'
+    none = 'none'
+
+
+class CancellationFee(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description="Fee calculation method. 'percent_remaining': percentage of remaining uncommitted spend. 'full_commitment': buyer owes the full committed budget regardless of delivery. 'fixed_fee': flat monetary amount. 'none': no financial fee (cancellation with notice is free)."
+        ),
+    ]
+    rate: Annotated[
+        float | None,
+        Field(
+            description="Fee rate as a decimal proportion of remaining committed spend. Required when type is 'percent_remaining' (e.g., 0.5 means 50% of remaining spend).",
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    amount: Annotated[
+        float | None,
+        Field(
+            description="Fixed fee amount in the buy's currency. Required when type is 'fixed_fee'.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class CancellationPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    notice_period: Annotated[
+        NoticePeriod,
+        Field(
+            description="Minimum notice period before cancellation takes effect (e.g., { interval: 30, unit: 'days' }). A guaranteed buy canceled without sufficient notice incurs the declared cancellation fee.",
+            title='Duration',
+        ),
+    ]
+    cancellation_fee: Annotated[
+        CancellationFee, Field(description='Fee applied when the notice period is not met.')
+    ]
+
+
+class AvailableReportingFrequency(Enum):
+    hourly = 'hourly'
+    daily = 'daily'
+    monthly = 'monthly'
+
+
+class AvailableMetric(Enum):
+    impressions = 'impressions'
+    spend = 'spend'
+    clicks = 'clicks'
+    ctr = 'ctr'
+    video_completions = 'video_completions'
+    completion_rate = 'completion_rate'
+    conversions = 'conversions'
+    conversion_value = 'conversion_value'
+    roas = 'roas'
+    cost_per_acquisition = 'cost_per_acquisition'
+    new_to_brand_rate = 'new_to_brand_rate'
+    viewability = 'viewability'
+    engagement_rate = 'engagement_rate'
+    views = 'views'
+    completed_views = 'completed_views'
+    leads = 'leads'
+    reach = 'reach'
+    frequency = 'frequency'
+    grps = 'grps'
+    quartile_data = 'quartile_data'
+    dooh_metrics = 'dooh_metrics'
+    cost_per_click = 'cost_per_click'
+
+
+class SupportsGeoBreakdown(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    country: Annotated[
+        bool | None, Field(description='Supports country-level geo breakdown (ISO 3166-1 alpha-2)')
+    ] = None
+    region: Annotated[
+        bool | None, Field(description='Supports region/state-level geo breakdown (ISO 3166-2)')
+    ] = None
+    metro: Annotated[
+        dict[Literal['nielsen_dma', 'uk_itl1', 'uk_itl2', 'eurostat_nuts2', 'custom'], bool] | None,
+        Field(
+            description='Metro area breakdown support. Keys are metro-system enum values; true means supported.'
+        ),
+    ] = None
+    postal_area: Annotated[
+        dict[
+            Literal[
+                'us_zip',
+                'us_zip_plus_four',
+                'gb_outward',
+                'gb_full',
+                'ca_fsa',
+                'ca_full',
+                'de_plz',
+                'fr_code_postal',
+                'au_postcode',
+                'ch_plz',
+                'at_plz',
+            ],
+            bool,
+        ]
+        | None,
+        Field(
+            description='Postal area breakdown support. Keys are postal-system enum values; true means supported.'
+        ),
+    ] = None
+
+
+class DateRangeSupport(Enum):
+    date_range = 'date_range'
+    lifetime_only = 'lifetime_only'
+
+
+class MeasurementWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    window_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this maturation stage. Standard broadcast values: 'live' (real-time viewers only), 'c3' (live + 3 days time-shifted), 'c7' (live + 7 days time-shifted). Standard values for other channels include 'tentative' (provisional data available quickly), 'final' (post-processing certified data), 'post_ivt' (digital after invalid-traffic filtering), 'post_sivt' (digital after sophisticated-IVT filtering), 'downloads_7d' / 'downloads_30d' (podcast download maturation). Sellers may define custom IDs.",
+            examples=['live', 'c3', 'c7', 'tentative', 'final', 'post_ivt', 'downloads_30d'],
+            max_length=50,
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of what this window measures',
+            examples=[
+                'Live broadcast impressions only',
+                'Live plus 7 days of time-shifted viewing',
+                'Tentative plays before IVT and fraud-check processing',
+                'Final plays after IVT and fraud-check processing',
+                'Impressions after sophisticated invalid-traffic filtering',
+            ],
+            max_length=500,
+        ),
+    ] = None
+    duration_days: Annotated[
+        int,
+        Field(
+            description='Number of days of accumulation included in this window before processing begins. For broadcast, this is DVR accumulation (0 = live only, 3 = live + 3 days DVR, 7 = live + 7 days DVR). For channels without an accumulation period (DOOH tentative→final, digital IVT filtering), this is 0 — maturation is entirely vendor processing time captured in expected_availability_days.',
+            ge=0,
+        ),
+    ]
+    expected_availability_days: Annotated[
+        int | None,
+        Field(
+            description="Expected number of days after delivery before this window's data is available from the measurement vendor. Captures accumulation time plus vendor processing time. Examples: broadcast C7 from VideoAmp ~22 days (7-day accumulation + ~15-day processing); DOOH tentative plays same-day; DOOH final (post-IVT/fraud-check) ~1 day; digital post-SIVT ~2–3 days.",
+            ge=0,
+        ),
+    ] = None
+    is_guarantee_basis: Annotated[
+        bool | None,
+        Field(
+            description="Whether this window is the basis for delivery guarantees, reconciliation, and invoicing. A product typically has one guarantee basis window (e.g., C7 for most US broadcast, post-IVT final for DOOH). Buyers reconcile against the guarantee basis window's final numbers."
+        ),
+    ] = None
+
+
+class ReportingCapabilities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_reporting_frequencies: Annotated[
+        list[AvailableReportingFrequency],
+        Field(description='Supported reporting frequency options', min_length=1),
+    ]
+    expected_delay_minutes: Annotated[
+        int,
+        Field(
+            description='Expected delay in minutes before reporting data becomes available (e.g., 240 for 4-hour delay)',
+            examples=[240, 300, 1440],
+            ge=0,
+        ),
+    ]
+    timezone: Annotated[
+        str,
+        Field(
+            description="Timezone for reporting periods. Use 'UTC' or IANA timezone (e.g., 'America/New_York'). Critical for daily/monthly frequency alignment.",
+            examples=['UTC', 'America/New_York', 'Europe/London', 'America/Los_Angeles'],
+        ),
+    ]
+    supports_webhooks: Annotated[
+        bool,
+        Field(description='Whether this product supports webhook-based reporting notifications'),
+    ]
+    available_metrics: Annotated[
+        list[AvailableMetric],
+        Field(
+            description="Metrics available in reporting. Impressions and spend are always implicitly included. When a creative format declares reported_metrics, buyers receive the intersection of these product-level metrics and the format's reported_metrics.",
+            examples=[
+                ['impressions', 'spend', 'clicks', 'video_completions'],
+                ['impressions', 'spend', 'conversions'],
+            ],
+        ),
+    ]
+    supports_creative_breakdown: Annotated[
+        bool | None,
+        Field(
+            description='Whether this product supports creative-level metric breakdowns in delivery reporting (by_creative within by_package)'
+        ),
+    ] = None
+    supports_keyword_breakdown: Annotated[
+        bool | None,
+        Field(
+            description='Whether this product supports keyword-level metric breakdowns in delivery reporting (by_keyword within by_package)'
+        ),
+    ] = None
+    supports_geo_breakdown: Annotated[
+        SupportsGeoBreakdown | None,
+        Field(
+            description='Geographic breakdown support for this product. Declares which geo levels and systems are available for by_geo reporting within by_package.',
+            title='Geographic Breakdown Support',
+        ),
+    ] = None
+    supports_device_type_breakdown: Annotated[
+        bool | None,
+        Field(
+            description='Whether this product supports device type breakdowns in delivery reporting (by_device_type within by_package)'
+        ),
+    ] = None
+    supports_device_platform_breakdown: Annotated[
+        bool | None,
+        Field(
+            description='Whether this product supports device platform breakdowns in delivery reporting (by_device_platform within by_package)'
+        ),
+    ] = None
+    supports_audience_breakdown: Annotated[
+        bool | None,
+        Field(
+            description='Whether this product supports audience segment breakdowns in delivery reporting (by_audience within by_package)'
+        ),
+    ] = None
+    supports_placement_breakdown: Annotated[
+        bool | None,
+        Field(
+            description='Whether this product supports placement breakdowns in delivery reporting (by_placement within by_package)'
+        ),
+    ] = None
+    date_range_support: Annotated[
+        DateRangeSupport,
+        Field(
+            description="Whether delivery data can be filtered to arbitrary date ranges. 'date_range' means the platform supports start_date/end_date parameters. 'lifetime_only' means the platform returns campaign lifetime totals and date range parameters are not accepted."
+        ),
+    ]
+    measurement_windows: Annotated[
+        list[MeasurementWindow] | None,
+        Field(
+            description='Measurement maturation stages available for this product. Used by any channel where billing-grade data is produced in phases rather than arriving final on day one. Examples: broadcast/linear TV (Live → C3 → C7 DVR accumulation), DOOH (tentative plays → post-IVT/fraud-check final), digital with IVT filtering (raw → GIVT filtered → SIVT filtered), podcast (7-day downloads → 30-day downloads). Each window defines an accumulation period and expected data availability. When present, delivery reports reference a specific window_id. Sellers whose data is final on first delivery typically omit this.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class CoBranding(Enum):
+    required = 'required'
+    optional = 'optional'
+    none = 'none'
+
+
+class LandingPage(Enum):
+    any = 'any'
+    retailer_site_only = 'retailer_site_only'
+    must_include_retailer = 'must_include_retailer'
+
+
+class CreativePolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    co_branding: Annotated[
+        CoBranding, Field(description='Co-branding requirement', title='Co-Branding Requirement')
+    ]
+    landing_page: Annotated[
+        LandingPage,
+        Field(description='Landing page requirements', title='Landing Page Requirement'),
+    ]
+    templates_available: Annotated[
+        bool, Field(description='Whether creative templates are provided')
+    ]
+    provenance_required: Annotated[
+        bool | None,
+        Field(
+            description='Whether creatives must include provenance metadata. When true, the seller requires buyers to attach provenance declarations to creative submissions. The seller may independently verify claims via get_creative_features.'
+        ),
+    ] = None
+
+
+class DataProviderSignals1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    data_provider_domain: Annotated[
+        str,
+        Field(
+            description="Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    selection_type: Annotated[
+        Literal['all'],
+        Field(
+            description='Discriminator indicating all signals from this data provider are included'
+        ),
+    ]
+
+
+class SignalId(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-zA-Z0-9_-]+$')]
+
+
+class DataProviderSignals2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    data_provider_domain: Annotated[
+        str,
+        Field(
+            description="Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    selection_type: Annotated[
+        Literal['by_id'],
+        Field(description='Discriminator indicating selection by specific signal IDs'),
+    ]
+    signal_ids: Annotated[
+        list[SignalId],
+        Field(description="Specific signal IDs from the data provider's catalog", min_length=1),
+    ]
+
+
+class SignalTag(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z0-9_-]+$')]
+
+
+class DataProviderSignals3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    data_provider_domain: Annotated[
+        str,
+        Field(
+            description="Domain where data provider's adagents.json is hosted (e.g., 'polk.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    selection_type: Annotated[
+        Literal['by_tag'], Field(description='Discriminator indicating selection by signal tags')
+    ]
+    signal_tags: Annotated[
+        list[SignalTag],
+        Field(
+            description="Signal tags from the data provider's catalog. Selector covers all signals with these tags",
+            min_length=1,
+        ),
+    ]
+
+
+class DataProviderSignals(
+    RootModel[DataProviderSignals1 | DataProviderSignals2 | DataProviderSignals3]
+):
+    root: Annotated[
+        DataProviderSignals1 | DataProviderSignals2 | DataProviderSignals3,
+        Field(
+            description="Selects signals from a data provider's adagents.json catalog. Used for product definitions and agent authorization. Supports three selection patterns: all signals, specific IDs, or by tags.",
+            discriminator='selection_type',
+            title='Data Provider Signal Selector',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class CatalogType(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class SupportedMetric(Enum):
+    clicks = 'clicks'
+    views = 'views'
+    completed_views = 'completed_views'
+    viewed_seconds = 'viewed_seconds'
+    attention_seconds = 'attention_seconds'
+    attention_score = 'attention_score'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    reach = 'reach'
+
+
+class SupportedViewDuration(RootModel[float]):
+    root: Annotated[float, Field(gt=0.0)]
+
+
+class SupportedTarget(Enum):
+    cost_per = 'cost_per'
+    threshold_rate = 'threshold_rate'
+
+
+class MetricOptimization(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supported_metrics: Annotated[
+        list[SupportedMetric],
+        Field(
+            description='Metric kinds this product can optimize for. Buyers should only request metric goals for kinds listed here.',
+            min_length=1,
+        ),
+    ]
+    supported_reach_units: Annotated[
+        list[ReachUnit] | None,
+        Field(
+            description="Reach units this product can optimize for. Required when supported_metrics includes 'reach'. Buyers must set reach_unit to a value in this list on reach optimization goals — sellers reject unsupported values.",
+            min_length=1,
+        ),
+    ] = None
+    supported_view_durations: Annotated[
+        list[SupportedViewDuration] | None,
+        Field(
+            description="Video view duration thresholds (in seconds) this product supports for completed_views goals. Only relevant when supported_metrics includes 'completed_views'. When absent, the seller uses their platform default. Buyers must set view_duration_seconds to a value in this list — sellers reject unsupported values."
+        ),
+    ] = None
+    supported_targets: Annotated[
+        list[SupportedTarget] | None,
+        Field(
+            description='Target kinds available for metric goals on this product. Values match target.kind on the optimization goal. Only these target kinds are accepted — goals with unlisted target kinds will be rejected. When omitted, buyers can set target-less metric goals (maximize volume within budget) but cannot set specific targets.'
+        ),
+    ] = None
+
+
+class Status(Enum):
+    insufficient = 'insufficient'
+    minimum = 'minimum'
+    good = 'good'
+    excellent = 'excellent'
+
+
+class RequiredEventType(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class Severity(Enum):
+    error = 'error'
+    warning = 'warning'
+    info = 'info'
+
+
+class Issue(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    severity: Annotated[
+        Severity,
+        Field(
+            description="'error': blocks optimization until resolved. 'warning': optimization works but effectiveness is reduced. 'info': suggestion for improvement."
+        ),
+    ]
+    message: Annotated[
+        str,
+        Field(description='Human/agent-readable description of the issue and how to resolve it.'),
+    ]
+
+
+class MeasurementReadiness(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    status: Annotated[
+        Status,
+        Field(
+            description="Overall measurement readiness level for this product given the buyer's event setup. 'insufficient' means the product cannot optimize effectively with the current setup.",
+            title='Assessment Status',
+        ),
+    ]
+    required_event_types: Annotated[
+        list[RequiredEventType] | None,
+        Field(
+            description='Event types this product needs for effective optimization. Buyers should ensure their event sources cover these types.',
+            min_length=1,
+        ),
+    ] = None
+    missing_event_types: Annotated[
+        list[RequiredEventType] | None,
+        Field(
+            description='Event types this product requires that the buyer has not configured. Empty or absent when all required types are covered.'
+        ),
+    ] = None
+    issues: Annotated[
+        list[Issue] | None,
+        Field(
+            description='Actionable issues preventing full measurement readiness. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.'
+        ),
+    ] = None
+    notes: Annotated[
+        str | None,
+        Field(
+            description='Seller explanation of the readiness assessment, recommendations for improvement, or context about what the buyer needs to change.'
+        ),
+    ] = None
+
+
+class ActionSource(Enum):
+    website = 'website'
+    app = 'app'
+    offline = 'offline'
+    phone_call = 'phone_call'
+    chat = 'chat'
+    email = 'email'
+    in_store = 'in_store'
+    system_generated = 'system_generated'
+    other = 'other'
+
+
+class SupportedTarget1(Enum):
+    cost_per = 'cost_per'
+    per_ad_spend = 'per_ad_spend'
+    maximize_value = 'maximize_value'
+
+
+class ConversionTracking(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action_sources: Annotated[
+        list[ActionSource] | None,
+        Field(
+            description="Action sources relevant to this product (e.g. a retail media product might have 'in_store' and 'website', while a display product might only have 'website')",
+            min_length=1,
+        ),
+    ] = None
+    supported_targets: Annotated[
+        list[SupportedTarget1] | None,
+        Field(
+            description='Target kinds available for event goals on this product. Values match target.kind on the optimization goal. cost_per: target cost per conversion event. per_ad_spend: target return on ad spend (requires value_field on event sources). maximize_value: maximize total conversion value without a specific ratio target (requires value_field). Only these target kinds are accepted — goals with unlisted target kinds will be rejected. A goal without a target implicitly maximizes conversion count within budget — no declaration needed for that mode. When omitted, buyers can still set target-less event goals.',
+            min_length=1,
+        ),
+    ] = None
+    platform_managed: Annotated[
+        bool | None,
+        Field(
+            description="Whether the seller provides its own always-on measurement (e.g. Amazon sales attribution for Amazon advertisers). When true, sync_event_sources response will include seller-managed event sources with managed_by='seller'."
+        ),
+    ] = None
+
+
+class MatchedGtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class CatalogMatch(AdCPBaseModel):
+    matched_gtins: Annotated[
+        list[MatchedGtin] | None,
+        Field(
+            description="GTINs from the buyer's catalog that are eligible on this product's inventory. Standard GTIN formats (GTIN-8 through GTIN-14). Only present for product-type catalogs with GTIN matching."
+        ),
+    ] = None
+    matched_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Item IDs from the buyer's catalog that matched this product's inventory. The ID type depends on the catalog type and content_id_type (e.g., SKUs for product catalogs, job_ids for job catalogs, offering_ids for offering catalogs)."
+        ),
+    ] = None
+    matched_count: Annotated[
+        int | None,
+        Field(description="Number of catalog items that matched this product's inventory.", ge=0),
+    ] = None
+    submitted_count: Annotated[
+        int, Field(description="Total catalog items evaluated from the buyer's catalog.", ge=0)
+    ]
+
+
+class ProductCard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Creative format defining the card layout (typically product_card_standard)',
+            title='Format ID',
+        ),
+    ]
+    manifest: Annotated[
+        dict[str, Any],
+        Field(description='Asset manifest for rendering the card, structure defined by the format'),
+    ]
+
+
+class ProductCardDetailed(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Creative format defining the detailed card layout (typically product_card_detailed)',
+            title='Format ID',
+        ),
+    ]
+    manifest: Annotated[
+        dict[str, Any],
+        Field(
+            description='Asset manifest for rendering the detailed card, structure defined by the format'
+        ),
+    ]
+
+
+class Collection(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where the adagents.json declaring these collections is hosted (e.g., 'mrbeast.com'). The collections array in that file contains the authoritative collection definitions.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    collection_ids: Annotated[
+        list[str],
+        Field(
+            description='Collection IDs from the adagents.json collections array. Each ID must match a collection_id declared in that file.',
+            min_length=1,
+        ),
+    ]
+
+
+class Status17(Enum):
+    scheduled = 'scheduled'
+    tentative = 'tentative'
+    live = 'live'
+    postponed = 'postponed'
+    cancelled = 'cancelled'
+    aired = 'aired'
+    published = 'published'
+
+
+class System(Enum):
+    tv_parental = 'tv_parental'
+    mpaa = 'mpaa'
+    podcast = 'podcast'
+    esrb = 'esrb'
+    bbfc = 'bbfc'
+    fsk = 'fsk'
+    acb = 'acb'
+    chvrs = 'chvrs'
+    csa = 'csa'
+    pegi = 'pegi'
+    custom = 'custom'
+
+
+class ContentRating(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    system: Annotated[
+        System, Field(description='Rating system used', title='Content Rating System')
+    ]
+    rating: Annotated[
+        str, Field(description="Rating value within the system (e.g., 'TV-PG', 'R', 'explicit')")
+    ]
+
+
+class Category(Enum):
+    awards = 'awards'
+    championship = 'championship'
+    concert = 'concert'
+    conference = 'conference'
+    election = 'election'
+    festival = 'festival'
+    gala = 'gala'
+    holiday = 'holiday'
+    premiere = 'premiere'
+    product_launch = 'product_launch'
+    reunion = 'reunion'
+    tribute = 'tribute'
+
+
+class Special(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str, Field(description="Name of the event (e.g., 'Olympics 2028', 'Super Bowl LXI')")
+    ]
+    category: Annotated[
+        Category | None, Field(description='Category of the event', title='Special Category')
+    ] = None
+    starts: Annotated[
+        AwareDatetime | None, Field(description='When the event starts (ISO 8601)')
+    ] = None
+    ends: Annotated[
+        AwareDatetime | None,
+        Field(description='When the event ends (ISO 8601). Omit for single-day events.'),
+    ] = None
+
+
+class Role(Enum):
+    host = 'host'
+    guest = 'guest'
+    creator = 'creator'
+    cast = 'cast'
+    narrator = 'narrator'
+    producer = 'producer'
+    correspondent = 'correspondent'
+    commentator = 'commentator'
+    analyst = 'analyst'
+
+
+class GuestTalentItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    role: Annotated[
+        Role,
+        Field(
+            description='Role of this person on the collection or installment', title='Talent Role'
+        ),
+    ]
+    name: Annotated[str, Field(description="Person's name as credited on the collection")]
+    brand_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to this person's brand.json entry. Enables buyer agents to evaluate the talent's brand identity and associations."
+        ),
+    ] = None
+
+
+class AdInventory(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    expected_breaks: Annotated[
+        int, Field(description='Number of planned ad breaks in the installment', ge=0)
+    ]
+    total_ad_seconds: Annotated[
+        int | None, Field(description='Total seconds of ad time across all breaks', ge=0)
+    ] = None
+    max_ad_duration_seconds: Annotated[
+        int | None,
+        Field(
+            description='Maximum duration in seconds for a single ad within a break. Buyers need this to know whether their creative fits.',
+            ge=1,
+        ),
+    ] = None
+    unplanned_breaks: Annotated[
+        bool | None,
+        Field(
+            description='Whether ad breaks are dynamic and driven by live conditions (sports timeouts, election coverage). When false, all breaks are pre-defined.'
+        ),
+    ] = None
+    supported_formats: Annotated[
+        list[str] | None,
+        Field(
+            description="Ad format types supported in breaks (e.g., 'video', 'audio', 'display')"
+        ),
+    ] = None
+
+
+class MaterialDeadline(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    stage: Annotated[
+        str,
+        Field(
+            description="Submission stage identifier. Use 'draft' for materials that need seller processing and 'final' for production-ready assets. Sellers may define additional stages.",
+            examples=['draft', 'final'],
+        ),
+    ]
+    due_at: Annotated[
+        AwareDatetime, Field(description='When materials for this stage are due (ISO 8601)')
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="What the seller needs at this stage (e.g., 'Talking points and brand guidelines', 'Press-ready PDF with bleed')"
+        ),
+    ] = None
+
+
+class Deadlines(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    booking_deadline: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Last date/time to book a placement in this installment (ISO 8601). After this point, the seller will not accept new bookings.'
+        ),
+    ] = None
+    cancellation_deadline: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Last date/time to cancel without penalty (ISO 8601). Cancellations after this point may incur fees per the seller's terms."
+        ),
+    ] = None
+    material_deadlines: Annotated[
+        list[MaterialDeadline] | None,
+        Field(
+            description="Stages for creative material submission. Items MUST be in chronological order by due_at (earliest first). Typical pattern: 'draft' for raw materials the seller will process, 'final' for production-ready assets. Print example: draft artwork then press-ready PDF. Influencer example: talking points then approved script.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Type43(Enum):
+    clip = 'clip'
+    highlight = 'highlight'
+    recap = 'recap'
+    trailer = 'trailer'
+    bonus = 'bonus'
+
+
+class DerivativeOf(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    installment_id: Annotated[
+        str, Field(description='The source installment this content is derived from')
+    ]
+    type: Annotated[
+        Type43,
+        Field(description='What kind of derivative content this is', title='Derivative Type'),
+    ]
+
+
+class Installment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    installment_id: Annotated[
+        str, Field(description='Unique identifier for this installment within the collection')
+    ]
+    collection_id: Annotated[
+        str | None,
+        Field(
+            description="Parent collection reference. Required when the product spans multiple collections. Maps to a collection_id declared in one of the publishers' adagents.json files referenced by the product's collection selectors."
+        ),
+    ] = None
+    name: Annotated[str | None, Field(description='Installment title')] = None
+    season: Annotated[
+        str | None, Field(description="Season identifier (e.g., '1', '2024', 'spring_2026')")
+    ] = None
+    installment_number: Annotated[
+        str | None, Field(description="Installment number within the season (e.g., '3', '47')")
+    ] = None
+    scheduled_at: Annotated[
+        AwareDatetime | None, Field(description='When the installment airs or publishes (ISO 8601)')
+    ] = None
+    status: Annotated[
+        Status17 | None,
+        Field(description='Lifecycle status of the installment', title='Installment Status'),
+    ] = None
+    duration_seconds: Annotated[
+        int | None, Field(description='Expected duration of the installment in seconds', ge=0)
+    ] = None
+    flexible_end: Annotated[
+        bool | None, Field(description='Whether the end time is approximate (live events, sports)')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this installment data expires and should be re-queried. Agents should re-query before committing budget to products with tentative installments.'
+        ),
+    ] = None
+    content_rating: Annotated[
+        ContentRating | None,
+        Field(
+            description="Installment-specific content rating. Overrides the collection's baseline content_rating when present.",
+            title='Content Rating',
+        ),
+    ] = None
+    topics: Annotated[
+        list[str] | None,
+        Field(
+            description="Content topics for this installment. Uses the same taxonomy as the collection's genre_taxonomy when present. Enables installment-level brand safety evaluation beyond content_rating."
+        ),
+    ] = None
+    special: Annotated[
+        Special | None,
+        Field(
+            description='Installment-specific event context. When present, this installment is anchored to a real-world event. Overrides the collection-level special when present.',
+            title='Special',
+        ),
+    ] = None
+    guest_talent: Annotated[
+        list[GuestTalentItem] | None,
+        Field(
+            description="Installment-specific guests and talent. Additive to the collection's recurring talent."
+        ),
+    ] = None
+    ad_inventory: Annotated[
+        AdInventory | None,
+        Field(
+            description='Break-based ad inventory for this installment. For non-break formats (host reads, integrations), use product placements.',
+            title='Ad Inventory Configuration',
+        ),
+    ] = None
+    deadlines: Annotated[
+        Deadlines | None,
+        Field(
+            description='Booking, cancellation, and material submission deadlines for this installment. Present when the installment has time-sensitive inventory that requires advance commitment or material delivery.',
+            title='Installment Deadlines',
+        ),
+    ] = None
+    derivative_of: Annotated[
+        DerivativeOf | None,
+        Field(
+            description='When this installment is a clip, highlight, or recap derived from a full installment. The source installment_id must reference an installment within the same response.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ResponseType(Enum):
+    activation = 'activation'
+    catalog_items = 'catalog_items'
+    creative = 'creative'
+    deal = 'deal'
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class UidType(Enum):
+    rampid = 'rampid'
+    rampid_derived = 'rampid_derived'
+    id5 = 'id5'
+    uid2 = 'uid2'
+    euid = 'euid'
+    pairid = 'pairid'
+    maid = 'maid'
+    hashed_email = 'hashed_email'
+    publisher_first_party = 'publisher_first_party'
+    other = 'other'
+
+
+class Provider(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="Provider's agent URL from the registry. Canonical identifier for this TMP provider."
+        ),
+    ]
+    context_match: Annotated[
+        bool | None,
+        Field(description='Whether this provider handles context match for this product.'),
+    ] = False
+    identity_match: Annotated[
+        bool | None,
+        Field(description='Whether this provider handles identity match for this product.'),
+    ] = False
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description="ISO 3166-1 alpha-2 country codes this provider serves for identity match. The router uses this to select the correct regional provider based on the request's country field. Required when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+    uid_types: Annotated[
+        list[UidType] | None,
+        Field(
+            description="Identity types this regional provider can resolve. The router filters providers whose uid_types includes the request's uid_type. Required when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class TrustedMatch(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    context_match: Annotated[
+        bool,
+        Field(
+            description="Whether this product supports Context Match requests. When true, the publisher's TMP router will send context match requests to registered providers for this product's inventory."
+        ),
+    ]
+    identity_match: Annotated[
+        bool | None,
+        Field(
+            description="Whether this product supports Identity Match requests. When true, the publisher's TMP router will send identity match requests to evaluate user eligibility."
+        ),
+    ] = False
+    response_types: Annotated[
+        list[ResponseType] | None,
+        Field(description='What the publisher can accept back from context match.', min_length=1),
+    ] = [ResponseType.activation]
+    dynamic_brands: Annotated[
+        bool | None,
+        Field(
+            description="Whether the buyer can select a brand at match time. When false (default), the brand must be specified on the media buy/package. When true, the buyer's offer can include any brand — the publisher applies approval rules at match time. Enables multi-brand agreements where the holding company or buyer agent selects brand based on context."
+        ),
+    ] = False
+    providers: Annotated[
+        list[Provider] | None,
+        Field(
+            description="TMP providers integrated with this product's inventory. Each entry identifies a provider by agent_url (from the registry) and declares what match types it supports for this product. The product-level context_match and identity_match booleans declare what the product supports overall; the per-provider booleans declare which provider handles each match type. Enables buyer discovery: 'find products where a specific provider does context matching.'",
+            min_length=1,
+        ),
+    ] = None
+
+
+class MaterialSubmission(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(description='HTTPS URL for uploading or submitting physical creative materials'),
+    ] = None
+    email: Annotated[
+        EmailStr | None, Field(description='Email address for creative material submission')
+    ] = None
+    instructions: Annotated[
+        str | None,
+        Field(
+            description='Human-readable instructions for material submission (file naming conventions, shipping address, etc.)',
+            max_length=2000,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Product(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    product_id: Annotated[str, Field(description='Unique identifier for the product')]
+    name: Annotated[str, Field(description='Human-readable product name')]
+    description: Annotated[
+        str, Field(description='Detailed description of the product and its inventory')
+    ]
+    publisher_properties: Annotated[
+        list[PublisherProperties],
+        Field(
+            description="Publisher properties covered by this product. Buyers fetch actual property definitions from each publisher's adagents.json and validate agent authorization. Selection patterns mirror the authorization patterns in adagents.json for consistency.",
+            min_length=1,
+        ),
+    ]
+    channels: Annotated[
+        list[Channel] | None,
+        Field(
+            description="Advertising channels this product is sold as. Products inherit from their properties' supported_channels but may narrow the scope. For example, a product covering YouTube properties might be sold as ['ctv'] even though those properties support ['olv', 'social', 'ctv']."
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId],
+        Field(
+            description='Array of supported creative format IDs - structured format_id objects with agent_url and id'
+        ),
+    ]
+    placements: Annotated[
+        list[Placement] | None,
+        Field(
+            description='Optional array of specific placements within this product. When provided, buyers can target specific placements when assigning creatives.',
+            min_length=1,
+        ),
+    ] = None
+    delivery_type: Annotated[
+        DeliveryType, Field(description='Type of inventory delivery', title='Delivery Type')
+    ]
+    exclusivity: Annotated[
+        Exclusivity | None,
+        Field(
+            description="Whether this product offers exclusive access to its inventory. Defaults to 'none' when absent. Most relevant for guaranteed products tied to specific collections or placements.",
+            title='Exclusivity',
+        ),
+    ] = None
+    pricing_options: Annotated[
+        list[
+            PricingOptions
+            | PricingOptions1
+            | PricingOptions2
+            | PricingOptions3
+            | PricingOptions4
+            | PricingOptions5
+            | PricingOptions6
+            | PricingOptions7
+            | PricingOptions8
+        ],
+        Field(description='Available pricing models for this product', min_length=1),
+    ]
+    forecast: Annotated[
+        Forecast | None,
+        Field(
+            description='Forecasted delivery metrics for this product. Gives buyers an estimate of expected performance before requesting a proposal.',
+            title='Delivery Forecast',
+        ),
+    ] = None
+    outcome_measurement: Annotated[
+        OutcomeMeasurement | None,
+        Field(
+            description='Business outcome measurement capabilities included with a product (e.g., incremental sales lift, brand lift, foot traffic). Distinct from delivery_measurement, which declares who counts ad impressions.',
+            title='Outcome Measurement',
+        ),
+    ] = None
+    delivery_measurement: Annotated[
+        DeliveryMeasurement | None,
+        Field(
+            description='Measurement provider and methodology for delivery metrics. The buyer accepts the declared provider as the source of truth for the buy. When absent, buyers should apply their own measurement defaults.'
+        ),
+    ] = None
+    measurement_terms: Annotated[
+        MeasurementTerms | None,
+        Field(
+            description="Seller's default billing measurement and makegood terms. Declares who counts the billing metric and what remedies apply when thresholds are breached. Buyers may propose different terms at media buy creation — sellers accept, reject (TERMS_REJECTED), or adjust per their policy.",
+            title='Measurement Terms',
+        ),
+    ] = None
+    performance_standards: Annotated[
+        list[PerformanceStandard] | None,
+        Field(
+            description="Seller's default performance standards for this product: viewability, IVT, completion rate, brand safety, attention score. Buyers may propose different standards at media buy creation. When absent, no structured performance standards apply.",
+            min_length=1,
+        ),
+    ] = None
+    cancellation_policy: Annotated[
+        CancellationPolicy | None,
+        Field(
+            description='Cancellation terms for this product. Declares the minimum notice period required before cancellation takes effect and any penalties for insufficient notice. Relevant for guaranteed delivery products. Buyers accept these terms by creating a media buy against the product.',
+            title='Cancellation Policy',
+        ),
+    ] = None
+    reporting_capabilities: Annotated[
+        ReportingCapabilities,
+        Field(
+            description='Reporting capabilities available for a product',
+            title='Reporting Capabilities',
+        ),
+    ]
+    creative_policy: Annotated[
+        CreativePolicy | None,
+        Field(
+            description='Creative requirements and restrictions for a product',
+            title='Creative Policy',
+        ),
+    ] = None
+    is_custom: Annotated[bool | None, Field(description='Whether this is a custom product')] = None
+    property_targeting_allowed: Annotated[
+        bool | None,
+        Field(
+            description="Whether buyers can filter this product to a subset of its publisher_properties. When false (default), the product is 'all or nothing' - buyers must accept all properties or the product is excluded from property_list filtering results."
+        ),
+    ] = False
+    data_provider_signals: Annotated[
+        list[DataProviderSignals] | None,
+        Field(
+            description="Data provider signals available for this product. Buyers fetch signal definitions from each data provider's adagents.json and can verify agent authorization."
+        ),
+    ] = None
+    signal_targeting_allowed: Annotated[
+        bool | None,
+        Field(
+            description='Whether buyers can filter this product to a subset of its data_provider_signals. When false (default), the product includes all listed signals as a bundle. When true, buyers can target specific signals.'
+        ),
+    ] = False
+    catalog_types: Annotated[
+        list[CatalogType] | None,
+        Field(
+            description='Catalog types this product supports for catalog-driven campaigns. A sponsored product listing declares ["product"], a job board declares ["job", "offering"]. Buyers match synced catalogs to products via this field.',
+            min_length=1,
+        ),
+    ] = None
+    metric_optimization: Annotated[
+        MetricOptimization | None,
+        Field(
+            description="Metric optimization capabilities for this product. Presence indicates the product supports optimization_goals with kind: 'metric'. No event source or conversion tracking setup required — the seller tracks these metrics natively."
+        ),
+    ] = None
+    max_optimization_goals: Annotated[
+        int | None,
+        Field(
+            description='Maximum number of optimization_goals this product accepts on a package. When absent, no limit is declared. Most social platforms accept only 1 goal — buyers sending arrays longer than this value should expect the seller to use only the highest-priority (lowest priority number) goal.',
+            ge=1,
+        ),
+    ] = None
+    measurement_readiness: Annotated[
+        MeasurementReadiness | None,
+        Field(
+            description="Assessment of whether the buyer's event source setup is sufficient for this product to optimize effectively. Only present when the seller can evaluate the buyer's account context. Buyers should check this before creating media buys with event-based optimization goals.",
+            title='Measurement Readiness',
+        ),
+    ] = None
+    conversion_tracking: Annotated[
+        ConversionTracking | None,
+        Field(
+            description="Conversion event tracking for this product. Presence indicates the product supports optimization_goals with kind: 'event'. Seller-level capabilities (supported event types, UID types, attribution windows) are declared in get_adcp_capabilities."
+        ),
+    ] = None
+    catalog_match: Annotated[
+        CatalogMatch | None,
+        Field(
+            description='When the buyer provides a catalog on get_products, indicates which catalog items are eligible for this product. Only present for products where catalog matching is relevant (e.g., sponsored product listings, job boards, hotel ads).'
+        ),
+    ] = None
+    brief_relevance: Annotated[
+        str | None,
+        Field(
+            description='Explanation of why this product matches the brief (only included when brief is provided)'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Expiration timestamp. After this time, the product may no longer be available for purchase and create_media_buy may reject packages referencing it.'
+        ),
+    ] = None
+    product_card: Annotated[
+        ProductCard | None,
+        Field(
+            description='Optional standard visual card (300x400px) for displaying this product in user interfaces. Can be rendered via preview_creative or pre-generated.'
+        ),
+    ] = None
+    product_card_detailed: Annotated[
+        ProductCardDetailed | None,
+        Field(
+            description='Optional detailed card with carousel and full specifications. Provides rich product presentation similar to media kit pages.'
+        ),
+    ] = None
+    collections: Annotated[
+        list[Collection] | None,
+        Field(
+            description='Collections available in this product. Each entry references collections declared in an adagents.json by domain and collection ID. Buyers resolve full collection objects from the referenced adagents.json.',
+            min_length=1,
+        ),
+    ] = None
+    collection_targeting_allowed: Annotated[
+        bool | None,
+        Field(
+            description="Whether buyers can target a subset of this product's collections. When false (default), the product is a bundle — buyers get all listed collections. When true, buyers can select specific collections in the media buy."
+        ),
+    ] = False
+    installments: Annotated[
+        list[Installment] | None,
+        Field(
+            description='Specific installments included in this product. Each installment references its parent collection via collection_id when the product spans multiple collections. When absent with collections present, the product covers the collections broadly (run-of-collection).'
+        ),
+    ] = None
+    enforced_policies: Annotated[
+        list[str] | None,
+        Field(
+            description='Registry policy IDs the seller enforces for this product. Enforcement level comes from the policy registry. Buyers can filter products by required policies.'
+        ),
+    ] = None
+    trusted_match: Annotated[
+        TrustedMatch | None,
+        Field(
+            description='Trusted Match Protocol capabilities for this product. When present, the product supports real-time contextual and/or identity matching via TMP. Buyers use this to determine what response types the publisher can accept and whether brands can be selected dynamically at match time.'
+        ),
+    ] = None
+    material_submission: Annotated[
+        MaterialSubmission | None,
+        Field(
+            description="Instructions for submitting physical creative materials (print, static OOH, cinema). Present only for products requiring physical delivery outside the digital creative assignment flow. Buyer agents MUST validate url and email domains against the seller's known domains (from adagents.json) before submitting materials. Never auto-submit without human confirmation."
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Day(Enum):
+    monday = 'monday'
+    tuesday = 'tuesday'
+    wednesday = 'wednesday'
+    thursday = 'thursday'
+    friday = 'friday'
+    saturday = 'saturday'
+    sunday = 'sunday'
+
+
+class DaypartTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    days: Annotated[
+        list[Day],
+        Field(
+            description='Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).',
+            min_length=1,
+        ),
+    ]
+    start_hour: Annotated[
+        int,
+        Field(
+            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
+            ge=0,
+            le=23,
+        ),
+    ]
+    end_hour: Annotated[
+        int,
+        Field(
+            description='End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.',
+            ge=1,
+            le=24,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+        ),
+    ] = None
+
+
+class AudienceSize2(AudienceSize):
+    pass
+
+
+class AudienceSize3(AudienceSize1):
+    pass
+
+
+class Reach2(AudienceSize):
+    pass
+
+
+class Reach3(AudienceSize1):
+    pass
+
+
+class Frequency2(AudienceSize):
+    pass
+
+
+class Frequency3(AudienceSize1):
+    pass
+
+
+class Impressions2(AudienceSize):
+    pass
+
+
+class Impressions3(AudienceSize1):
+    pass
+
+
+class Clicks2(AudienceSize):
+    pass
+
+
+class Clicks3(AudienceSize1):
+    pass
+
+
+class Spend3(AudienceSize):
+    pass
+
+
+class Spend4(AudienceSize1):
+    pass
+
+
+class Views2(AudienceSize):
+    pass
+
+
+class Views3(AudienceSize1):
+    pass
+
+
+class CompletedViews2(AudienceSize):
+    pass
+
+
+class CompletedViews3(AudienceSize1):
+    pass
+
+
+class Grps2(AudienceSize):
+    pass
+
+
+class Grps3(AudienceSize1):
+    pass
+
+
+class Engagements2(AudienceSize):
+    pass
+
+
+class Engagements3(AudienceSize1):
+    pass
+
+
+class Follows2(AudienceSize):
+    pass
+
+
+class Follows3(AudienceSize1):
+    pass
+
+
+class Saves2(AudienceSize):
+    pass
+
+
+class Saves3(AudienceSize1):
+    pass
+
+
+class ProfileVisits2(AudienceSize):
+    pass
+
+
+class ProfileVisits3(AudienceSize1):
+    pass
+
+
+class MeasuredImpressions2(AudienceSize):
+    pass
+
+
+class MeasuredImpressions3(AudienceSize1):
+    pass
+
+
+class Downloads2(AudienceSize):
+    pass
+
+
+class Downloads3(AudienceSize1):
+    pass
+
+
+class Plays2(AudienceSize):
+    pass
+
+
+class Plays3(AudienceSize1):
+    pass
+
+
+class Metrics2(AdCPBaseModel):
+    audience_size: Annotated[
+        AudienceSize2 | AudienceSize3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    reach: Annotated[
+        Reach2 | Reach3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    frequency: Annotated[
+        Frequency2 | Frequency3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    impressions: Annotated[
+        Impressions2 | Impressions3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    clicks: Annotated[
+        Clicks2 | Clicks3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    spend: Annotated[
+        Spend3 | Spend4 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    views: Annotated[
+        Views2 | Views3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    completed_views: Annotated[
+        CompletedViews2 | CompletedViews3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    grps: Annotated[
+        Grps2 | Grps3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    engagements: Annotated[
+        Engagements2 | Engagements3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    follows: Annotated[
+        Follows2 | Follows3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    saves: Annotated[
+        Saves2 | Saves3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    profile_visits: Annotated[
+        ProfileVisits2 | ProfileVisits3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    measured_impressions: Annotated[
+        MeasuredImpressions2 | MeasuredImpressions3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    downloads: Annotated[
+        Downloads2 | Downloads3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    plays: Annotated[
+        Plays2 | Plays3 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+
+
+class Point1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+            examples=['Primetime', 'Morning Drive', 'Large Format Transit'],
+            max_length=128,
+        ),
+    ] = None
+    budget: Annotated[
+        float | None,
+        Field(
+            description='Budget amount for this forecast point. Required for spend curves; omit for availability forecasts where the metrics represent total available inventory. For allocation-level forecasts, this is the absolute budget for that allocation (not the percentage). For proposal-level forecasts, this is the total proposal budget. When omitted, use metrics.spend to express the estimated cost of the available inventory.',
+            ge=0.0,
+        ),
+    ] = None
+    metrics: Annotated[
+        Metrics2,
+        Field(
+            description='Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { "mid": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory — use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).'
+        ),
+    ]
+
+
+class Forecast1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    points: Annotated[
+        list[Point1],
+        Field(
+            description='Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.',
+            min_length=1,
+        ),
+    ]
+    forecast_range_unit: Annotated[
+        ForecastRangeUnit | None,
+        Field(
+            description="How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package.",
+            title='Forecast Range Unit',
+        ),
+    ] = None
+    method: Annotated[
+        Method, Field(description='Method used to produce this forecast', title='Forecast Method')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code for monetary values in this forecast (spend, budget)'
+        ),
+    ]
+    demographic_system: Annotated[
+        DemographicSystem | None,
+        Field(
+            description='Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation.',
+            title='Demographic System',
+        ),
+    ] = None
+    demographic: Annotated[
+        str | None,
+        Field(
+            description='Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.',
+            examples=['P18-49', 'A25-54', 'W35+', 'M18-34'],
+        ),
+    ] = None
+    measurement_source: Annotated[
+        str | None,
+        Field(
+            description='Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation — measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.',
+            examples=[
+                'nielsen',
+                'videoamp',
+                'comscore',
+                'geopath',
+                'barb',
+                'agf',
+                'oztam',
+                'kantar',
+                'barc',
+                'route',
+                'rajar',
+                'triton',
+            ],
+            max_length=64,
+            pattern='^[a-z0-9_]+$',
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison.',
+            title='Reach Unit',
+        ),
+    ] = None
+    generated_at: Annotated[
+        AwareDatetime | None, Field(description='When this forecast was computed')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Allocation(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    product_id: Annotated[
+        str, Field(description='ID of the product (must reference a product in the products array)')
+    ]
+    allocation_percentage: Annotated[
+        float,
+        Field(
+            description='Percentage of total budget allocated to this product (0-100)',
+            ge=0.0,
+            le=100.0,
+        ),
+    ]
+    pricing_option_id: Annotated[
+        str | None,
+        Field(description="Recommended pricing option ID from the product's pricing_options array"),
+    ] = None
+    rationale: Annotated[
+        str | None,
+        Field(description='Explanation of why this product and allocation are recommended'),
+    ] = None
+    sequence: Annotated[
+        int | None,
+        Field(description='Optional ordering hint for multi-line-item plans (1-based)', ge=1),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description="Categorical tags for this allocation (e.g., 'desktop', 'german', 'mobile') - useful for grouping/filtering allocations by dimension"
+        ),
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Recommended flight start date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range.'
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Recommended flight end date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range.'
+        ),
+    ] = None
+    daypart_targets: Annotated[
+        list[DaypartTarget] | None,
+        Field(
+            description='Recommended time windows for this allocation in spot-plan proposals.',
+            min_length=1,
+        ),
+    ] = None
+    forecast: Annotated[
+        Forecast1 | None,
+        Field(
+            description='Forecasted delivery metrics for this allocation', title='Delivery Forecast'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ProposalStatus(Enum):
+    draft = 'draft'
+    committed = 'committed'
+
+
+class TotalBudget(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[
+        str, Field(description='ISO 4217 currency code', max_length=3, min_length=3)
+    ]
+
+
+class PaymentTerms(Enum):
+    net_30 = 'net_30'
+    net_60 = 'net_60'
+    net_90 = 'net_90'
+    prepaid = 'prepaid'
+    due_on_receipt = 'due_on_receipt'
+
+
+class Terms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    advertiser: Annotated[
+        str | None, Field(description='Advertiser name or identifier', max_length=500)
+    ] = None
+    publisher: Annotated[
+        str | None, Field(description='Publisher name or identifier', max_length=500)
+    ] = None
+    total_budget: Annotated[TotalBudget | None, Field(description='Total committed budget')] = None
+    flight_start: Annotated[AwareDatetime | None, Field(description='Campaign start date')] = None
+    flight_end: Annotated[AwareDatetime | None, Field(description='Campaign end date')] = None
+    payment_terms: Annotated[PaymentTerms | None, Field(description='Payment terms')] = None
+
+
+class InsertionOrder(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    io_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this insertion order. Referenced by io_acceptance on create_media_buy.',
+            max_length=255,
+        ),
+    ]
+    terms: Annotated[
+        Terms | None,
+        Field(
+            description='Summary fields echoed from the committed proposal for agent verification. Buyer agents use these to confirm the IO matches what was negotiated before a human signs. These are read-only summaries, not negotiation surfaces — deal terms live on products and packages.'
+        ),
+    ] = None
+    terms_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to a human-readable document containing the full insertion order terms'
+        ),
+    ] = None
+    signing_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to an electronic signing service (e.g., DocuSign) for human signature workflows. When present, a human must sign before the buyer agent can proceed with create_media_buy.'
+        ),
+    ] = None
+    requires_signature: Annotated[
+        bool,
+        Field(
+            description='Whether the buyer must accept this IO before creating a media buy. When true, create_media_buy requires an io_acceptance referencing this io_id.'
+        ),
+    ]
+
+
+class TotalBudgetGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[float | None, Field(description='Minimum recommended budget', ge=0.0)] = None
+    recommended: Annotated[
+        float | None, Field(description='Recommended budget for optimal performance', ge=0.0)
+    ] = None
+    max: Annotated[
+        float | None, Field(description='Maximum budget before diminishing returns', ge=0.0)
+    ] = None
+    currency: Annotated[str | None, Field(description='ISO 4217 currency code')] = None
+
+
+class AudienceSize4(AudienceSize):
+    pass
+
+
+class AudienceSize5(AudienceSize1):
+    pass
+
+
+class Reach4(AudienceSize):
+    pass
+
+
+class Reach5(AudienceSize1):
+    pass
+
+
+class Frequency4(AudienceSize):
+    pass
+
+
+class Frequency5(AudienceSize1):
+    pass
+
+
+class Impressions4(AudienceSize):
+    pass
+
+
+class Impressions5(AudienceSize1):
+    pass
+
+
+class Clicks4(AudienceSize):
+    pass
+
+
+class Clicks5(AudienceSize1):
+    pass
+
+
+class Spend5(AudienceSize):
+    pass
+
+
+class Spend6(AudienceSize1):
+    pass
+
+
+class Views4(AudienceSize):
+    pass
+
+
+class Views5(AudienceSize1):
+    pass
+
+
+class CompletedViews4(AudienceSize):
+    pass
+
+
+class CompletedViews5(AudienceSize1):
+    pass
+
+
+class Grps4(AudienceSize):
+    pass
+
+
+class Grps5(AudienceSize1):
+    pass
+
+
+class Engagements4(AudienceSize):
+    pass
+
+
+class Engagements5(AudienceSize1):
+    pass
+
+
+class Follows4(AudienceSize):
+    pass
+
+
+class Follows5(AudienceSize1):
+    pass
+
+
+class Saves4(AudienceSize):
+    pass
+
+
+class Saves5(AudienceSize1):
+    pass
+
+
+class ProfileVisits4(AudienceSize):
+    pass
+
+
+class ProfileVisits5(AudienceSize1):
+    pass
+
+
+class MeasuredImpressions4(AudienceSize):
+    pass
+
+
+class MeasuredImpressions5(AudienceSize1):
+    pass
+
+
+class Downloads4(AudienceSize):
+    pass
+
+
+class Downloads5(AudienceSize1):
+    pass
+
+
+class Plays4(AudienceSize):
+    pass
+
+
+class Plays5(AudienceSize1):
+    pass
+
+
+class Metrics3(AdCPBaseModel):
+    audience_size: Annotated[
+        AudienceSize4 | AudienceSize5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    reach: Annotated[
+        Reach4 | Reach5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    frequency: Annotated[
+        Frequency4 | Frequency5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    impressions: Annotated[
+        Impressions4 | Impressions5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    clicks: Annotated[
+        Clicks4 | Clicks5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    spend: Annotated[
+        Spend5 | Spend6 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    views: Annotated[
+        Views4 | Views5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    completed_views: Annotated[
+        CompletedViews4 | CompletedViews5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    grps: Annotated[
+        Grps4 | Grps5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    engagements: Annotated[
+        Engagements4 | Engagements5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    follows: Annotated[
+        Follows4 | Follows5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    saves: Annotated[
+        Saves4 | Saves5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    profile_visits: Annotated[
+        ProfileVisits4 | ProfileVisits5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    measured_impressions: Annotated[
+        MeasuredImpressions4 | MeasuredImpressions5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    downloads: Annotated[
+        Downloads4 | Downloads5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+    plays: Annotated[
+        Plays4 | Plays5 | None,
+        Field(
+            description='A forecast value with optional confidence bounds. Either mid (point estimate) or both low and high (range) must be provided. mid represents the most likely outcome. low and high represent conservative and optimistic estimates. All three can be provided together.',
+            title='Forecast Range',
+        ),
+    ] = None
+
+
+class Point2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+            examples=['Primetime', 'Morning Drive', 'Large Format Transit'],
+            max_length=128,
+        ),
+    ] = None
+    budget: Annotated[
+        float | None,
+        Field(
+            description='Budget amount for this forecast point. Required for spend curves; omit for availability forecasts where the metrics represent total available inventory. For allocation-level forecasts, this is the absolute budget for that allocation (not the percentage). For proposal-level forecasts, this is the total proposal budget. When omitted, use metrics.spend to express the estimated cost of the available inventory.',
+            ge=0.0,
+        ),
+    ] = None
+    metrics: Annotated[
+        Metrics3,
+        Field(
+            description='Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { "mid": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory — use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).'
+        ),
+    ]
+
+
+class Forecast2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    points: Annotated[
+        list[Point2],
+        Field(
+            description='Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.',
+            min_length=1,
+        ),
+    ]
+    forecast_range_unit: Annotated[
+        ForecastRangeUnit | None,
+        Field(
+            description="How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package.",
+            title='Forecast Range Unit',
+        ),
+    ] = None
+    method: Annotated[
+        Method, Field(description='Method used to produce this forecast', title='Forecast Method')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code for monetary values in this forecast (spend, budget)'
+        ),
+    ]
+    demographic_system: Annotated[
+        DemographicSystem | None,
+        Field(
+            description='Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation.',
+            title='Demographic System',
+        ),
+    ] = None
+    demographic: Annotated[
+        str | None,
+        Field(
+            description='Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.',
+            examples=['P18-49', 'A25-54', 'W35+', 'M18-34'],
+        ),
+    ] = None
+    measurement_source: Annotated[
+        str | None,
+        Field(
+            description='Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation — measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.',
+            examples=[
+                'nielsen',
+                'videoamp',
+                'comscore',
+                'geopath',
+                'barb',
+                'agf',
+                'oztam',
+                'kantar',
+                'barc',
+                'route',
+                'rajar',
+                'triton',
+            ],
+            max_length=64,
+            pattern='^[a-z0-9_]+$',
+        ),
+    ] = None
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description='Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison.',
+            title='Reach Unit',
+        ),
+    ] = None
+    generated_at: Annotated[
+        AwareDatetime | None, Field(description='When this forecast was computed')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Proposal(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    proposal_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this proposal. Used to execute it via create_media_buy.',
+            max_length=255,
+        ),
+    ]
+    name: Annotated[
+        str, Field(description='Human-readable name for this media plan proposal', max_length=500)
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Explanation of the proposal strategy and what it achieves', max_length=2000
+        ),
+    ] = None
+    allocations: Annotated[
+        list[Allocation],
+        Field(
+            description='Budget allocations across products. Allocation percentages MUST sum to 100. Publishers are responsible for ensuring the sum equals 100; buyers SHOULD validate this before execution.',
+            min_length=1,
+        ),
+    ]
+    proposal_status: Annotated[
+        ProposalStatus | None,
+        Field(
+            description="Lifecycle status of this proposal. When absent, the proposal is ready to buy (backward compatible). 'draft' means indicative pricing — finalize via refine before purchasing. 'committed' means firm pricing with inventory reserved until expires_at.",
+            title='Proposal Status',
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this proposal expires and can no longer be executed. For draft proposals, indicates when indicative pricing becomes stale. For committed proposals, indicates when the inventory hold lapses — the buyer must call create_media_buy before this time.'
+        ),
+    ] = None
+    insertion_order: Annotated[
+        InsertionOrder | None,
+        Field(
+            description='Formal insertion order attached to a committed proposal. Present when the seller requires a signed agreement before the media buy can proceed. The buyer references the io_id in io_acceptance on create_media_buy.',
+            title='Insertion Order',
+        ),
+    ] = None
+    total_budget_guidance: Annotated[
+        TotalBudgetGuidance | None, Field(description='Optional budget guidance for this proposal')
+    ] = None
+    brief_alignment: Annotated[
+        str | None,
+        Field(
+            description='Explanation of how this proposal aligns with the campaign brief',
+            max_length=2000,
+        ),
+    ] = None
+    forecast: Annotated[
+        Forecast2 | None,
+        Field(
+            description='Aggregate forecasted delivery metrics for the entire proposal. When both proposal-level and allocation-level forecasts are present, the proposal-level forecast is authoritative for total delivery estimation.',
+            title='Delivery Forecast',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Scope(Enum):
+    request = 'request'
+    product = 'product'
+    proposal = 'proposal'
+
+
+class Status18(Enum):
+    applied = 'applied'
+    partial = 'partial'
+    unable = 'unable'
+
+
+class RefinementAppliedItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    scope: Annotated[
+        Scope | None,
+        Field(
+            description='Echoes the scope from the corresponding refine entry. Allows orchestrators to cross-validate alignment.'
+        ),
+    ] = None
+    id: Annotated[
+        str | None,
+        Field(
+            description='Echoes the id from the corresponding refine entry (for product and proposal scopes).'
+        ),
+    ] = None
+    status: Annotated[
+        Status18,
+        Field(
+            description="'applied': the ask was fulfilled. 'partial': the ask was partially fulfilled — see notes for details. 'unable': the seller could not fulfill the ask — see notes for why."
+        ),
+    ]
+    notes: Annotated[
+        str | None,
+        Field(
+            description="Seller explanation of what was done, what couldn't be done, or why. Recommended when status is 'partial' or 'unable'."
+        ),
+    ] = None
+
+
+class Scope5(Enum):
+    products = 'products'
+    pricing = 'pricing'
+    forecast = 'forecast'
+    proposals = 'proposals'
+
+
+class EstimatedWait(Window):
+    pass
+
+
+class IncompleteItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    scope: Annotated[
+        Scope5,
+        Field(
+            description="'products': not all inventory sources were searched. 'pricing': products returned but pricing is absent or unconfirmed. 'forecast': products returned but forecast data is absent. 'proposals': proposals were not generated or are incomplete."
+        ),
+    ]
+    description: Annotated[
+        str, Field(description='Human-readable explanation of what is missing and why.')
+    ]
+    estimated_wait: Annotated[
+        EstimatedWait | None,
+        Field(
+            description='How much additional time would resolve this scope. Allows the buyer to decide whether to retry with a larger time_budget.'
+        ),
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class GetProductsResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    products: Annotated[list[Product], Field(description='Array of matching products')]
+    proposals: Annotated[
+        list[Proposal] | None,
+        Field(
+            description='Optional array of proposed media plans with budget allocations across products. Publishers include proposals when they can provide strategic guidance based on the brief. Proposals are actionable - buyers can refine them via follow-up get_products calls within the same session, or execute them directly via create_media_buy.'
+        ),
+    ] = None
+    errors: Annotated[
+        list[Error] | None,
+        Field(description='Task-specific errors and warnings (e.g., product filtering issues)'),
+    ] = None
+    property_list_applied: Annotated[
+        bool | None,
+        Field(
+            description='[AdCP 3.0] Indicates whether property_list filtering was applied. True if the agent filtered products based on the provided property_list. Absent or false if property_list was not provided or not supported by this agent.'
+        ),
+    ] = None
+    catalog_applied: Annotated[
+        bool | None,
+        Field(
+            description='Whether the seller filtered results based on the provided catalog. True if the seller matched catalog items against its inventory. Absent or false if no catalog was provided or the seller does not support catalog matching.'
+        ),
+    ] = None
+    refinement_applied: Annotated[
+        list[RefinementAppliedItem] | None,
+        Field(
+            description="Seller's response to each change request in the refine array, matched by position. Each entry acknowledges whether the corresponding ask was applied, partially applied, or unable to be fulfilled. MUST contain the same number of entries in the same order as the request's refine array. Only present when the request used buying_mode: 'refine'."
+        ),
+    ] = None
+    incomplete: Annotated[
+        list[IncompleteItem] | None,
+        Field(
+            description="Declares what the seller could not finish within the buyer's time_budget or due to internal limits. Each entry identifies a scope that is missing or partial. Absent when the response is fully complete.",
+            min_length=1,
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/list_creative_formats_request.py b/src/adcp/types/generated_poc/bundled/media_buy/list_creative_formats_request.py
new file mode 100644
index 000000000..18c36d19b
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/list_creative_formats_request.py
@@ -0,0 +1,229 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/list_creative_formats_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class AssetType(Enum):
+    image = 'image'
+    video = 'video'
+    audio = 'audio'
+    text = 'text'
+    markdown = 'markdown'
+    html = 'html'
+    css = 'css'
+    javascript = 'javascript'
+    vast = 'vast'
+    daast = 'daast'
+    url = 'url'
+    webhook = 'webhook'
+    brief = 'brief'
+    catalog = 'catalog'
+
+
+class WcagLevel(Enum):
+    A = 'A'
+    AA = 'AA'
+    AAA = 'AAA'
+
+
+class DisclosurePosition(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class DisclosurePersistenceEnum(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class OutputFormatId(FormatId):
+    pass
+
+
+class InputFormatId(FormatId):
+    pass
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class ListCreativeFormatsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Return only these specific format IDs (e.g., from get_products response)',
+            min_length=1,
+        ),
+    ] = None
+    asset_types: Annotated[
+        list[AssetType] | None,
+        Field(
+            description="Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
+            min_length=1,
+        ),
+    ] = None
+    max_width: Annotated[
+        int | None,
+        Field(
+            description='Maximum width in pixels (inclusive). Returns formats where ANY render has width <= this value. For multi-render formats, matches if at least one render fits.'
+        ),
+    ] = None
+    max_height: Annotated[
+        int | None,
+        Field(
+            description='Maximum height in pixels (inclusive). Returns formats where ANY render has height <= this value. For multi-render formats, matches if at least one render fits.'
+        ),
+    ] = None
+    min_width: Annotated[
+        int | None,
+        Field(
+            description='Minimum width in pixels (inclusive). Returns formats where ANY render has width >= this value.'
+        ),
+    ] = None
+    min_height: Annotated[
+        int | None,
+        Field(
+            description='Minimum height in pixels (inclusive). Returns formats where ANY render has height >= this value.'
+        ),
+    ] = None
+    is_responsive: Annotated[
+        bool | None,
+        Field(
+            description='Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.'
+        ),
+    ] = None
+    name_search: Annotated[
+        str | None, Field(description='Search for formats by name (case-insensitive partial match)')
+    ] = None
+    wcag_level: Annotated[
+        WcagLevel | None,
+        Field(
+            description='Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)',
+            title='WCAG Level',
+        ),
+    ] = None
+    disclosure_positions: Annotated[
+        list[DisclosurePosition] | None,
+        Field(
+            description="Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
+            min_length=1,
+        ),
+    ] = None
+    disclosure_persistence: Annotated[
+        list[DisclosurePersistenceEnum] | None,
+        Field(
+            description='Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).',
+            min_length=1,
+        ),
+    ] = None
+    output_format_ids: Annotated[
+        list[OutputFormatId] | None,
+        Field(
+            description="Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs — inspect each result's input_format_ids to see what inputs they accept.",
+            min_length=1,
+        ),
+    ] = None
+    input_format_ids: Annotated[
+        list[InputFormatId] | None,
+        Field(
+            description="Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input — inspect each result's output_format_ids to see what they can produce.",
+            min_length=1,
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/list_creative_formats_response.py b/src/adcp/types/generated_poc/bundled/media_buy/list_creative_formats_response.py
new file mode 100644
index 000000000..55be90349
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/list_creative_formats_response.py
@@ -0,0 +1,2091 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/list_creative_formats_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class AcceptsParameter(Enum):
+    dimensions = 'dimensions'
+    duration = 'duration'
+
+
+class Unit(Enum):
+    px = 'px'
+    dp = 'dp'
+    inches = 'inches'
+    cm = 'cm'
+    mm = 'mm'
+    pt = 'pt'
+
+
+class Responsive(AdCPBaseModel):
+    width: bool
+    height: bool
+
+
+class Dimensions(AdCPBaseModel):
+    width: Annotated[
+        float | None,
+        Field(description='Fixed width. Interpretation depends on unit (default: pixels).', gt=0.0),
+    ] = None
+    height: Annotated[
+        float | None,
+        Field(
+            description='Fixed height. Interpretation depends on unit (default: pixels).', gt=0.0
+        ),
+    ] = None
+    min_width: Annotated[
+        float | None, Field(description='Minimum width for responsive renders', gt=0.0)
+    ] = None
+    min_height: Annotated[
+        float | None, Field(description='Minimum height for responsive renders', gt=0.0)
+    ] = None
+    max_width: Annotated[
+        float | None, Field(description='Maximum width for responsive renders', gt=0.0)
+    ] = None
+    max_height: Annotated[
+        float | None, Field(description='Maximum height for responsive renders', gt=0.0)
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    responsive: Annotated[
+        Responsive | None, Field(description='Indicates which dimensions are responsive/fluid')
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+
+
+class Renders(AdCPBaseModel):
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+        ),
+    ]
+    parameters_from_format_id: Annotated[
+        bool | None,
+        Field(
+            description='When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly.'
+        ),
+    ] = None
+    dimensions: Annotated[
+        Dimensions,
+        Field(
+            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
+        ),
+    ]
+
+
+class Dimensions9(Dimensions):
+    pass
+
+
+class Renders9(AdCPBaseModel):
+    role: Annotated[
+        str,
+        Field(
+            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+        ),
+    ]
+    parameters_from_format_id: Annotated[
+        Literal[True],
+        Field(
+            description='When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly.'
+        ),
+    ]
+    dimensions: Annotated[
+        Dimensions9 | None,
+        Field(
+            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
+        ),
+    ] = None
+
+
+class Format(Enum):
+    jpg = 'jpg'
+    jpeg = 'jpeg'
+    png = 'png'
+    gif = 'gif'
+    webp = 'webp'
+    svg = 'svg'
+    avif = 'avif'
+    tiff = 'tiff'
+    pdf = 'pdf'
+    eps = 'eps'
+
+
+class Bleed(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    uniform: Annotated[float, Field(description='Same bleed on all four sides', ge=0.0)]
+
+
+class Bleed3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    top: Annotated[float, Field(ge=0.0)]
+    right: Annotated[float, Field(ge=0.0)]
+    bottom: Annotated[float, Field(ge=0.0)]
+    left: Annotated[float, Field(ge=0.0)]
+
+
+class ColorSpace(Enum):
+    rgb = 'rgb'
+    cmyk = 'cmyk'
+    grayscale = 'grayscale'
+
+
+class Requirements(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[
+        float | None,
+        Field(
+            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    max_width: Annotated[
+        float | None,
+        Field(
+            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    min_height: Annotated[
+        float | None,
+        Field(
+            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    max_height: Annotated[
+        float | None,
+        Field(
+            description='Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
+    min_dpi: Annotated[
+        int | None,
+        Field(
+            description='Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI.',
+            ge=1,
+        ),
+    ] = None
+    bleed: Annotated[
+        Bleed | Bleed3 | None,
+        Field(
+            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
+        ),
+    ] = None
+    color_space: Annotated[
+        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
+    ] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    transparency_required: Annotated[
+        bool | None,
+        Field(
+            description='Whether the image must support transparency (requires PNG, WebP, or GIF)'
+        ),
+    ] = None
+    animation_allowed: Annotated[
+        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
+    ] = None
+    max_animation_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
+            ge=0,
+        ),
+    ] = None
+    max_weight_grams: Annotated[
+        int | None,
+        Field(
+            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
+            gt=0,
+        ),
+    ] = None
+
+
+class Container(Enum):
+    mp4 = 'mp4'
+    webm = 'webm'
+    mov = 'mov'
+    avi = 'avi'
+    mkv = 'mkv'
+
+
+class Codec(Enum):
+    h264 = 'h264'
+    h265 = 'h265'
+    vp8 = 'vp8'
+    vp9 = 'vp9'
+    av1 = 'av1'
+    prores = 'prores'
+
+
+class FrameRate(RootModel[float]):
+    root: Annotated[float, Field(ge=1.0)]
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioCodec(Enum):
+    aac = 'aac'
+    pcm = 'pcm'
+    ac3 = 'ac3'
+    eac3 = 'eac3'
+    mp3 = 'mp3'
+    opus = 'opus'
+    vorbis = 'vorbis'
+    flac = 'flac'
+
+
+class AudioSampleRate(RootModel[int]):
+    root: Annotated[int, Field(ge=1)]
+
+
+class AudioChannel(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class Requirements1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[int | None, Field(description='Minimum width in pixels', ge=1)] = None
+    max_width: Annotated[int | None, Field(description='Maximum width in pixels', ge=1)] = None
+    min_height: Annotated[int | None, Field(description='Minimum height in pixels', ge=1)] = None
+    max_height: Annotated[int | None, Field(description='Maximum height in pixels', ge=1)] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(description="Required aspect ratio (e.g., '16:9', '9:16')", pattern='^\\d+:\\d+$'),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None, Field(description='Minimum duration in milliseconds', ge=1)
+    ] = None
+    max_duration_ms: Annotated[
+        int | None, Field(description='Maximum duration in milliseconds', ge=1)
+    ] = None
+    containers: Annotated[
+        list[Container] | None, Field(description='Accepted video container formats')
+    ] = None
+    codecs: Annotated[list[Codec] | None, Field(description='Accepted video codecs')] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    min_bitrate_kbps: Annotated[
+        int | None, Field(description='Minimum video bitrate in kilobits per second', ge=1)
+    ] = None
+    max_bitrate_kbps: Annotated[
+        int | None, Field(description='Maximum video bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rates: Annotated[
+        list[FrameRate] | None,
+        Field(description='Accepted frame rates in frames per second (e.g., [24, 30, 60])'),
+    ] = None
+    audio_required: Annotated[
+        bool | None, Field(description='Whether the video must include an audio track')
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(
+            description='Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing.'
+        ),
+    ] = None
+    scan_type: Annotated[
+        ScanType | None,
+        Field(description='Required scan type. Modern delivery requires progressive scan.'),
+    ] = None
+    gop_type: Annotated[
+        GopType | None,
+        Field(
+            description='Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points.'
+        ),
+    ] = None
+    min_gop_interval_seconds: Annotated[
+        float | None, Field(description='Minimum keyframe interval in seconds', ge=0.0)
+    ] = None
+    max_gop_interval_seconds: Annotated[
+        float | None,
+        Field(
+            description='Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals.',
+            ge=0.0,
+        ),
+    ] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None,
+        Field(
+            description="Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+        ),
+    ] = None
+    audio_codecs: Annotated[
+        list[AudioCodec] | None,
+        Field(description="Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"),
+    ] = None
+    audio_sample_rates: Annotated[
+        list[AudioSampleRate] | None,
+        Field(description='Accepted audio sample rates in Hz (e.g., [44100, 48000])'),
+    ] = None
+    audio_channels: Annotated[
+        list[AudioChannel] | None, Field(description='Accepted audio channel configurations')
+    ] = None
+    loudness_lufs: Annotated[
+        float | None,
+        Field(
+            description='Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)'
+        ),
+    ] = None
+    loudness_tolerance_db: Annotated[
+        float | None,
+        Field(
+            description='Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)',
+            ge=0.0,
+        ),
+    ] = None
+    true_peak_dbfs: Annotated[
+        float | None, Field(description='Maximum true peak level in dBFS (e.g., -2 for broadcast)')
+    ] = None
+
+
+class Format7(Enum):
+    mp3 = 'mp3'
+    aac = 'aac'
+    wav = 'wav'
+    ogg = 'ogg'
+    flac = 'flac'
+
+
+class SampleRate(AudioSampleRate):
+    pass
+
+
+class Channel(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+
+
+class Requirements2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_duration_ms: Annotated[
+        int | None, Field(description='Minimum duration in milliseconds', ge=1)
+    ] = None
+    max_duration_ms: Annotated[
+        int | None, Field(description='Maximum duration in milliseconds', ge=1)
+    ] = None
+    formats: Annotated[list[Format7] | None, Field(description='Accepted audio file formats')] = (
+        None
+    )
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    sample_rates: Annotated[
+        list[SampleRate] | None,
+        Field(description='Accepted sample rates in Hz (e.g., [44100, 48000])'),
+    ] = None
+    channels: Annotated[
+        list[Channel] | None, Field(description='Accepted audio channel configurations')
+    ] = None
+    min_bitrate_kbps: Annotated[
+        int | None, Field(description='Minimum audio bitrate in kilobits per second', ge=1)
+    ] = None
+    max_bitrate_kbps: Annotated[
+        int | None, Field(description='Maximum audio bitrate in kilobits per second', ge=1)
+    ] = None
+
+
+class Requirements3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_length: Annotated[int | None, Field(description='Minimum character length', ge=0)] = None
+    max_length: Annotated[int | None, Field(description='Maximum character length', ge=1)] = None
+    min_lines: Annotated[int | None, Field(description='Minimum number of lines', ge=1)] = None
+    max_lines: Annotated[int | None, Field(description='Maximum number of lines', ge=1)] = None
+    character_pattern: Annotated[
+        str | None,
+        Field(
+            description="Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
+        ),
+    ] = None
+    prohibited_terms: Annotated[
+        list[str] | None, Field(description='List of prohibited words or phrases')
+    ] = None
+
+
+class Requirements4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_length: Annotated[int | None, Field(description='Maximum character length', ge=1)] = None
+
+
+class Sandbox(Enum):
+    none = 'none'
+    iframe = 'iframe'
+    safeframe = 'safeframe'
+    fencedframe = 'fencedframe'
+
+
+class Requirements5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes for the HTML asset', ge=1)
+    ] = None
+    sandbox: Annotated[
+        Sandbox | None,
+        Field(
+            description="Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+        ),
+    ] = Sandbox.none
+    external_resources_allowed: Annotated[
+        bool | None,
+        Field(
+            description='Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled.'
+        ),
+    ] = None
+    allowed_external_domains: Annotated[
+        list[str] | None,
+        Field(
+            description='List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true.'
+        ),
+    ] = None
+
+
+class Requirements6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+
+
+class ModuleType(Enum):
+    script = 'script'
+    module = 'module'
+    iife = 'iife'
+
+
+class Requirements7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    max_file_size_kb: Annotated[
+        int | None,
+        Field(description='Maximum file size in kilobytes for the JavaScript asset', ge=1),
+    ] = None
+    module_type: Annotated[
+        ModuleType | None,
+        Field(
+            description="Required JavaScript module format. 'script' = classic script, 'module' = ES modules, 'iife' = immediately invoked function expression"
+        ),
+    ] = None
+    strict_mode_required: Annotated[
+        bool | None, Field(description='Whether the JavaScript must use strict mode')
+    ] = None
+    external_resources_allowed: Annotated[
+        bool | None,
+        Field(description='Whether the JavaScript can load external resources dynamically'),
+    ] = None
+    allowed_external_domains: Annotated[
+        list[str] | None,
+        Field(
+            description='List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true.'
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class Requirements8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vast_version: Annotated[VastVersion | None, Field(description='Required VAST version')] = None
+
+
+class Requirements9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    daast_version: Annotated[
+        Literal['1.0'] | None,
+        Field(description='Required DAAST version. DAAST 1.0 is the current IAB standard.'),
+    ] = None
+
+
+class Role(Enum):
+    clickthrough = 'clickthrough'
+    landing_page = 'landing_page'
+    impression_tracker = 'impression_tracker'
+    click_tracker = 'click_tracker'
+    viewability_tracker = 'viewability_tracker'
+    third_party_tracker = 'third_party_tracker'
+
+
+class Protocol(Enum):
+    https = 'https'
+    http = 'http'
+
+
+class Requirements10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    role: Annotated[
+        Role | None,
+        Field(
+            description='Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum.'
+        ),
+    ] = None
+    protocols: Annotated[
+        list[Protocol] | None,
+        Field(description='Allowed URL protocols. HTTPS is recommended for all ad URLs.'),
+    ] = None
+    allowed_domains: Annotated[
+        list[str] | None, Field(description='List of allowed domains for the URL')
+    ] = None
+    max_length: Annotated[
+        int | None, Field(description='Maximum URL length in characters', ge=1)
+    ] = None
+    macro_support: Annotated[
+        bool | None,
+        Field(description='Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})'),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class Requirements11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    methods: Annotated[list[Method] | None, Field(description='Allowed HTTP methods')] = None
+
+
+class CatalogType(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class AssetType(Enum):
+    image = 'image'
+    video = 'video'
+    audio = 'audio'
+    text = 'text'
+    markdown = 'markdown'
+    html = 'html'
+    css = 'css'
+    javascript = 'javascript'
+    vast = 'vast'
+    daast = 'daast'
+    url = 'url'
+    webhook = 'webhook'
+    brief = 'brief'
+    catalog = 'catalog'
+
+
+class Bleed4(Bleed):
+    pass
+
+
+class Bleed5(Bleed3):
+    pass
+
+
+class AssetRequirements(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[
+        float | None,
+        Field(
+            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    max_width: Annotated[
+        float | None,
+        Field(
+            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    min_height: Annotated[
+        float | None,
+        Field(
+            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    max_height: Annotated[
+        float | None,
+        Field(
+            description='Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
+    min_dpi: Annotated[
+        int | None,
+        Field(
+            description='Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI.',
+            ge=1,
+        ),
+    ] = None
+    bleed: Annotated[
+        Bleed4 | Bleed5 | None,
+        Field(
+            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
+        ),
+    ] = None
+    color_space: Annotated[
+        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
+    ] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    transparency_required: Annotated[
+        bool | None,
+        Field(
+            description='Whether the image must support transparency (requires PNG, WebP, or GIF)'
+        ),
+    ] = None
+    animation_allowed: Annotated[
+        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
+    ] = None
+    max_animation_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
+            ge=0,
+        ),
+    ] = None
+    max_weight_grams: Annotated[
+        int | None,
+        Field(
+            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
+            gt=0,
+        ),
+    ] = None
+
+
+class AssetRequirements2(Requirements1):
+    pass
+
+
+class AssetRequirements3(Requirements2):
+    pass
+
+
+class AssetRequirements4(Requirements3):
+    pass
+
+
+class AssetRequirements5(Requirements4):
+    pass
+
+
+class AssetRequirements6(Requirements5):
+    pass
+
+
+class AssetRequirements7(Requirements6):
+    pass
+
+
+class AssetRequirements8(Requirements7):
+    pass
+
+
+class AssetRequirements9(Requirements8):
+    pass
+
+
+class AssetRequirements10(Requirements9):
+    pass
+
+
+class AssetRequirements11(Requirements10):
+    pass
+
+
+class AssetRequirements12(Requirements11):
+    pass
+
+
+class OfferingAssetConstraint(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    asset_group_id: Annotated[
+        str,
+        Field(
+            description="The asset group this constraint applies to. Values are format-defined vocabulary — each format chooses its own group IDs (e.g., 'headlines', 'images', 'videos'). Buyers discover them via list_creative_formats."
+        ),
+    ]
+    asset_type: Annotated[
+        AssetType,
+        Field(description='The expected content type for this group.', title='Asset Content Type'),
+    ]
+    required: Annotated[
+        bool | None,
+        Field(
+            description='Whether this asset group must be present in each offering. Defaults to true.'
+        ),
+    ] = True
+    min_count: Annotated[
+        int | None, Field(description='Minimum number of items required in this group.', ge=1)
+    ] = None
+    max_count: Annotated[
+        int | None, Field(description='Maximum number of items allowed in this group.', ge=1)
+    ] = None
+    asset_requirements: Annotated[
+        AssetRequirements
+        | AssetRequirements2
+        | AssetRequirements3
+        | AssetRequirements4
+        | AssetRequirements5
+        | AssetRequirements6
+        | AssetRequirements7
+        | AssetRequirements8
+        | AssetRequirements9
+        | AssetRequirements10
+        | AssetRequirements11
+        | AssetRequirements12
+        | None,
+        Field(
+            description='Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group.',
+            title='Asset Requirements',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class SelectionMode(Enum):
+    sequential = 'sequential'
+    optimize = 'optimize'
+
+
+class Bleed6(Bleed):
+    pass
+
+
+class Bleed7(Bleed3):
+    pass
+
+
+class Requirements13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min_width: Annotated[
+        float | None,
+        Field(
+            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    max_width: Annotated[
+        float | None,
+        Field(
+            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
+        ),
+    ] = None
+    min_height: Annotated[
+        float | None,
+        Field(
+            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    max_height: Annotated[
+        float | None,
+        Field(
+            description='Maximum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
+        ),
+    ] = None
+    unit: Annotated[
+        Unit | None,
+        Field(
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'.",
+            title='Dimension Unit',
+        ),
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
+    ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
+    min_dpi: Annotated[
+        int | None,
+        Field(
+            description='Minimum resolution in dots per inch. Always in DPI regardless of the dimension unit. Standard print requires 300 DPI, newspaper 150 DPI.',
+            ge=1,
+        ),
+    ] = None
+    bleed: Annotated[
+        Bleed6 | Bleed7 | None,
+        Field(
+            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
+        ),
+    ] = None
+    color_space: Annotated[
+        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
+    ] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    transparency_required: Annotated[
+        bool | None,
+        Field(
+            description='Whether the image must support transparency (requires PNG, WebP, or GIF)'
+        ),
+    ] = None
+    animation_allowed: Annotated[
+        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
+    ] = None
+    max_animation_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
+            ge=0,
+        ),
+    ] = None
+    max_weight_grams: Annotated[
+        int | None,
+        Field(
+            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
+            gt=0,
+        ),
+    ] = None
+
+
+class Requirements14(Requirements1):
+    pass
+
+
+class Requirements15(Requirements2):
+    pass
+
+
+class Requirements16(Requirements3):
+    pass
+
+
+class Requirements17(Requirements4):
+    pass
+
+
+class Requirements18(Requirements5):
+    pass
+
+
+class Requirements19(Requirements6):
+    pass
+
+
+class Requirements20(Requirements7):
+    pass
+
+
+class Requirements21(Requirements8):
+    pass
+
+
+class Requirements22(Requirements9):
+    pass
+
+
+class Requirements23(Requirements10):
+    pass
+
+
+class Requirements24(Requirements11):
+    pass
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class InputFormatId(FormatId):
+    pass
+
+
+class OutputFormatId(FormatId):
+    pass
+
+
+class FormatCard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Creative format defining the card layout (typically format_card_standard)',
+            title='Format ID',
+        ),
+    ]
+    manifest: Annotated[
+        dict[str, Any],
+        Field(description='Asset manifest for rendering the card, structure defined by the format'),
+    ]
+
+
+class WcagLevel(Enum):
+    A = 'A'
+    AA = 'AA'
+    AAA = 'AAA'
+
+
+class Accessibility(AdCPBaseModel):
+    wcag_level: Annotated[
+        WcagLevel,
+        Field(
+            description='WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level.',
+            title='WCAG Level',
+        ),
+    ]
+    requires_accessible_assets: Annotated[
+        bool | None,
+        Field(
+            description='When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties.'
+        ),
+    ] = None
+
+
+class SupportedDisclosurePosition(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class PersistenceEnum(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class DisclosureCapability(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    position: Annotated[
+        SupportedDisclosurePosition,
+        Field(description='The disclosure position', title='Disclosure Position'),
+    ]
+    persistence: Annotated[
+        list[PersistenceEnum],
+        Field(description='Persistence modes this position supports', min_length=1),
+    ]
+
+
+class FormatCardDetailed(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Creative format defining the detailed card layout (typically format_card_detailed)',
+            title='Format ID',
+        ),
+    ]
+    manifest: Annotated[
+        dict[str, Any],
+        Field(
+            description='Asset manifest for rendering the detailed card, structure defined by the format'
+        ),
+    ]
+
+
+class ReportedMetric(Enum):
+    impressions = 'impressions'
+    spend = 'spend'
+    clicks = 'clicks'
+    ctr = 'ctr'
+    video_completions = 'video_completions'
+    completion_rate = 'completion_rate'
+    conversions = 'conversions'
+    conversion_value = 'conversion_value'
+    roas = 'roas'
+    cost_per_acquisition = 'cost_per_acquisition'
+    new_to_brand_rate = 'new_to_brand_rate'
+    viewability = 'viewability'
+    engagement_rate = 'engagement_rate'
+    views = 'views'
+    completed_views = 'completed_views'
+    leads = 'leads'
+    reach = 'reach'
+    frequency = 'frequency'
+    grps = 'grps'
+    quartile_data = 'quartile_data'
+    dooh_metrics = 'dooh_metrics'
+    cost_per_click = 'cost_per_click'
+
+
+class PricingOption141(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption142(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption143(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption144(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption145(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption146(PricingOption141, PricingOption145):
+    pass
+
+
+class PricingOption147(PricingOption142, PricingOption145):
+    pass
+
+
+class PricingOption148(PricingOption143, PricingOption145):
+    pass
+
+
+class PricingOption149(PricingOption144, PricingOption145):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption146 | PricingOption147 | PricingOption148 | PricingOption149]
+):
+    root: Annotated[
+        PricingOption146 | PricingOption147 | PricingOption148 | PricingOption149,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Capability(Enum):
+    validation = 'validation'
+    assembly = 'assembly'
+    generation = 'generation'
+    preview = 'preview'
+    delivery = 'delivery'
+
+
+class CreativeAgent(AdCPBaseModel):
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
+        ),
+    ]
+    agent_name: Annotated[
+        str | None, Field(description='Human-readable name for the creative agent')
+    ] = None
+    capabilities: Annotated[
+        list[Capability] | None, Field(description='Capabilities this creative agent provides')
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class BaseGroupAsset(RootModel[Any]):
+    root: Any
+
+
+class BaseIndividualAsset(BaseGroupAsset):
+    pass
+
+
+class AssetPoolBinding(BaseGroupAsset):
+    pass
+
+
+class ScalarBinding(BaseGroupAsset):
+    pass
+
+
+class Assets(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['image'] = 'image'
+    requirements: Annotated[
+        Requirements | None,
+        Field(
+            description='Requirements for image creative assets. These define the technical constraints for image files.',
+            title='Image Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets160(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['video'] = 'video'
+    requirements: Annotated[
+        Requirements1 | None,
+        Field(
+            description='Requirements for video creative assets. These define the technical constraints for video files.',
+            title='Video Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets161(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['audio'] = 'audio'
+    requirements: Annotated[
+        Requirements2 | None,
+        Field(
+            description='Requirements for audio creative assets.', title='Audio Asset Requirements'
+        ),
+    ] = None
+
+
+class Assets162(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['text'] = 'text'
+    requirements: Annotated[
+        Requirements3 | None,
+        Field(
+            description='Requirements for text creative assets such as headlines, body copy, and CTAs.',
+            title='Text Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets163(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['markdown'] = 'markdown'
+    requirements: Annotated[
+        Requirements4 | None,
+        Field(
+            description='Requirements for markdown creative assets.',
+            title='Markdown Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets164(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['html'] = 'html'
+    requirements: Annotated[
+        Requirements5 | None,
+        Field(
+            description='Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.',
+            title='HTML Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets165(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['css'] = 'css'
+    requirements: Annotated[
+        Requirements6 | None,
+        Field(description='Requirements for CSS creative assets.', title='CSS Asset Requirements'),
+    ] = None
+
+
+class Assets166(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['javascript'] = 'javascript'
+    requirements: Annotated[
+        Requirements7 | None,
+        Field(
+            description='Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.',
+            title='JavaScript Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets167(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['vast'] = 'vast'
+    requirements: Annotated[
+        Requirements8 | None,
+        Field(
+            description='Requirements for VAST (Video Ad Serving Template) creative assets.',
+            title='VAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets168(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['daast'] = 'daast'
+    requirements: Annotated[
+        Requirements9 | None,
+        Field(
+            description='Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.',
+            title='DAAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets169(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['url'] = 'url'
+    requirements: Annotated[
+        Requirements10 | None,
+        Field(
+            description='Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.',
+            title='URL Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets170(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['webhook'] = 'webhook'
+    requirements: Annotated[
+        Requirements11 | None,
+        Field(
+            description='Requirements for webhook creative assets.',
+            title='Webhook Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets171(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['brief'] = 'brief'
+
+
+class FieldBindings(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['catalog_group']
+    format_group_id: Annotated[
+        str,
+        Field(description="The asset_group_id of a repeatable_group in the format's assets array."),
+    ]
+    catalog_item: Annotated[
+        Literal[True],
+        Field(
+            description="Each repetition of the format's repeatable_group maps to one item from the catalog."
+        ),
+    ]
+    per_item_bindings: Annotated[
+        list[ScalarBinding | AssetPoolBinding] | None,
+        Field(
+            description='Scalar and asset pool bindings that apply within each repetition of the group. Nested catalog_group bindings are not permitted.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Requirements12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_type: Annotated[
+        CatalogType,
+        Field(description='The catalog type this requirement applies to', title='Catalog Type'),
+    ]
+    required: Annotated[
+        bool | None,
+        Field(
+            description='Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.'
+        ),
+    ] = True
+    min_items: Annotated[
+        int | None,
+        Field(
+            description='Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)',
+            ge=1,
+        ),
+    ] = None
+    max_items: Annotated[
+        int | None,
+        Field(
+            description='Maximum number of items the format can render. Items beyond this limit are ignored. Useful for fixed-slot layouts (e.g., a 3-product card) or feed-size constraints.',
+            ge=1,
+        ),
+    ] = None
+    required_fields: Annotated[
+        list[str] | None,
+        Field(
+            description="Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
+            min_length=1,
+        ),
+    ] = None
+    feed_formats: Annotated[
+        list[FeedFormat] | None,
+        Field(
+            description='Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.',
+            min_length=1,
+        ),
+    ] = None
+    offering_asset_constraints: Annotated[
+        list[OfferingAssetConstraint] | None,
+        Field(
+            description="Per-item creative asset requirements. Declares what asset groups (headlines, images, videos) each catalog item must provide in its assets array, along with count bounds and per-asset technical constraints. Applicable to 'offering' and all vertical catalog types (hotel, flight, job, etc.) whose items carry typed assets.",
+            min_length=1,
+        ),
+    ] = None
+    field_bindings: Annotated[
+        list[ScalarBinding | AssetPoolBinding | FieldBindings] | None,
+        Field(
+            description='Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional — creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id → catalog_field), asset pools (asset_id → asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets172(AdCPBaseModel):
+    item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['catalog'] = 'catalog'
+    requirements: Annotated[
+        Requirements12 | None,
+        Field(
+            description='Format-level declaration of what catalog feeds a creative needs. Formats that render product listings, store locators, or promotional content declare which catalog types must be synced and what fields each catalog must provide. Buyers use this to ensure the right catalogs are synced before submitting creatives.',
+            title='Catalog Requirements',
+        ),
+    ] = None
+
+
+class Assets174(AdCPBaseModel):
+    asset_type: Literal['image'] = 'image'
+    requirements: Annotated[
+        Requirements13 | None,
+        Field(
+            description='Requirements for image creative assets. These define the technical constraints for image files.',
+            title='Image Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets175(AdCPBaseModel):
+    asset_type: Literal['video'] = 'video'
+    requirements: Annotated[
+        Requirements14 | None,
+        Field(
+            description='Requirements for video creative assets. These define the technical constraints for video files.',
+            title='Video Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets176(AdCPBaseModel):
+    asset_type: Literal['audio'] = 'audio'
+    requirements: Annotated[
+        Requirements15 | None,
+        Field(
+            description='Requirements for audio creative assets.', title='Audio Asset Requirements'
+        ),
+    ] = None
+
+
+class Assets177(AdCPBaseModel):
+    asset_type: Literal['text'] = 'text'
+    requirements: Annotated[
+        Requirements16 | None,
+        Field(
+            description='Requirements for text creative assets such as headlines, body copy, and CTAs.',
+            title='Text Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets178(AdCPBaseModel):
+    asset_type: Literal['markdown'] = 'markdown'
+    requirements: Annotated[
+        Requirements17 | None,
+        Field(
+            description='Requirements for markdown creative assets.',
+            title='Markdown Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets179(AdCPBaseModel):
+    asset_type: Literal['html'] = 'html'
+    requirements: Annotated[
+        Requirements18 | None,
+        Field(
+            description='Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.',
+            title='HTML Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets180(AdCPBaseModel):
+    asset_type: Literal['css'] = 'css'
+    requirements: Annotated[
+        Requirements19 | None,
+        Field(description='Requirements for CSS creative assets.', title='CSS Asset Requirements'),
+    ] = None
+
+
+class Assets181(AdCPBaseModel):
+    asset_type: Literal['javascript'] = 'javascript'
+    requirements: Annotated[
+        Requirements20 | None,
+        Field(
+            description='Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.',
+            title='JavaScript Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets182(AdCPBaseModel):
+    asset_type: Literal['vast'] = 'vast'
+    requirements: Annotated[
+        Requirements21 | None,
+        Field(
+            description='Requirements for VAST (Video Ad Serving Template) creative assets.',
+            title='VAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets183(AdCPBaseModel):
+    asset_type: Literal['daast'] = 'daast'
+    requirements: Annotated[
+        Requirements22 | None,
+        Field(
+            description='Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.',
+            title='DAAST Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets184(AdCPBaseModel):
+    asset_type: Literal['url'] = 'url'
+    requirements: Annotated[
+        Requirements23 | None,
+        Field(
+            description='Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.',
+            title='URL Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets185(AdCPBaseModel):
+    asset_type: Literal['webhook'] = 'webhook'
+    requirements: Annotated[
+        Requirements24 | None,
+        Field(
+            description='Requirements for webhook creative assets.',
+            title='Webhook Asset Requirements',
+        ),
+    ] = None
+
+
+class Assets173(AdCPBaseModel):
+    item_type: Annotated[
+        Literal['repeatable_group'],
+        Field(description='Discriminator indicating this is a repeatable asset group'),
+    ]
+    asset_group_id: Annotated[
+        str, Field(description="Identifier for this asset group (e.g., 'product', 'slide', 'card')")
+    ]
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether this asset group is required. If true, at least min_count repetitions must be provided.'
+        ),
+    ]
+    min_count: Annotated[
+        int,
+        Field(
+            description='Minimum number of repetitions required (if group is required) or allowed (if optional)',
+            ge=0,
+        ),
+    ]
+    max_count: Annotated[int, Field(description='Maximum number of repetitions allowed', ge=1)]
+    selection_mode: Annotated[
+        SelectionMode | None,
+        Field(
+            description="How the platform uses repetitions of this group. 'sequential' means all items display in order (carousels, playlists). 'optimize' means the platform selects the best-performing combination from alternatives (asset group optimization like Meta Advantage+ or Google Pmax)."
+        ),
+    ] = SelectionMode.sequential
+    assets: Annotated[
+        list[
+            Assets174
+            | Assets175
+            | Assets176
+            | Assets177
+            | Assets178
+            | Assets179
+            | Assets180
+            | Assets181
+            | Assets182
+            | Assets183
+            | Assets184
+            | Assets185
+        ],
+        Field(description='Assets within each repetition of this group'),
+    ]
+
+
+class Format5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Structured format identifier with agent URL and format name',
+            title='Format ID',
+        ),
+    ]
+    name: Annotated[str, Field(description='Human-readable format name')]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Plain text explanation of what this format does and what assets it requires'
+        ),
+    ] = None
+    example_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL to showcase page with examples and interactive demos of this format'
+        ),
+    ] = None
+    accepts_parameters: Annotated[
+        list[AcceptsParameter] | None,
+        Field(
+            description='List of parameters this format accepts in format_id. Template formats define which parameters (dimensions, duration, etc.) can be specified when instantiating the format. Empty or omitted means this is a concrete format with fixed parameters.'
+        ),
+    ] = None
+    renders: Annotated[
+        list[Renders | Renders9] | None,
+        Field(
+            description='Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.',
+            min_length=1,
+        ),
+    ] = None
+    assets: Annotated[
+        list[
+            Assets
+            | Assets160
+            | Assets161
+            | Assets162
+            | Assets163
+            | Assets164
+            | Assets165
+            | Assets166
+            | Assets167
+            | Assets168
+            | Assets169
+            | Assets170
+            | Assets171
+            | Assets172
+            | Assets173
+        ]
+        | None,
+        Field(
+            description="Array of all assets supported for this format. Each asset is identified by its asset_id, which must be used as the key in creative manifests. Use the 'required' boolean on each asset to indicate whether it's mandatory."
+        ),
+    ] = None
+    delivery: Annotated[
+        dict[str, Any] | None,
+        Field(description='Delivery method specifications (e.g., hosted, VAST, third-party tags)'),
+    ] = None
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.'
+        ),
+    ] = None
+    input_format_ids: Annotated[
+        list[InputFormatId] | None,
+        Field(
+            description='Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.'
+        ),
+    ] = None
+    output_format_ids: Annotated[
+        list[OutputFormatId] | None,
+        Field(
+            description='Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).'
+        ),
+    ] = None
+    format_card: Annotated[
+        FormatCard | None,
+        Field(
+            description='Optional standard visual card (300x400px) for displaying this format in user interfaces. Can be rendered via preview_creative or pre-generated.'
+        ),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(
+            description='Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.'
+        ),
+    ] = None
+    supported_disclosure_positions: Annotated[
+        list[SupportedDisclosurePosition] | None,
+        Field(
+            description='Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees — creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.',
+            min_length=1,
+        ),
+    ] = None
+    disclosure_capabilities: Annotated[
+        list[DisclosureCapability] | None,
+        Field(
+            description='Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.',
+            min_length=1,
+        ),
+    ] = None
+    format_card_detailed: Annotated[
+        FormatCardDetailed | None,
+        Field(
+            description='Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.'
+        ),
+    ] = None
+    reported_metrics: Annotated[
+        list[ReportedMetric] | None,
+        Field(
+            description='Metrics this format can produce in delivery reporting. Buyers receive the intersection of format reported_metrics and product available_metrics. If omitted, the format defers entirely to product-level metric declarations.',
+            min_length=1,
+        ),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this format. Used by transformation and generation agents that charge per format adapted, per image generated, or per unit of work. Present when the request included include_pricing=true and account. Ad servers and library-based agents expose pricing on list_creatives instead.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class ListCreativeFormatsResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    formats: Annotated[
+        list[Format5],
+        Field(
+            description="Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field."
+        ),
+    ]
+    creative_agents: Annotated[
+        list[CreativeAgent] | None,
+        Field(
+            description='Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.'
+        ),
+    ] = None
+    errors: Annotated[
+        list[Error] | None,
+        Field(description='Task-specific errors and warnings (e.g., format availability issues)'),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/log_event_request.py b/src/adcp/types/generated_poc/bundled/media_buy/log_event_request.py
new file mode 100644
index 000000000..bf6e5cb02
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/log_event_request.py
@@ -0,0 +1,461 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/log_event_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+
+class EventType(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class Type(Enum):
+    rampid = 'rampid'
+    rampid_derived = 'rampid_derived'
+    id5 = 'id5'
+    uid2 = 'uid2'
+    euid = 'euid'
+    pairid = 'pairid'
+    maid = 'maid'
+    hashed_email = 'hashed_email'
+    publisher_first_party = 'publisher_first_party'
+    other = 'other'
+
+
+class Uid(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Type, Field(description='Universal ID type', title='UID Type')]
+    value: Annotated[str, Field(description='Universal ID value')]
+
+
+class UserMatch(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    uids: Annotated[
+        list[Uid], Field(description='Universal ID values for user matching', min_length=1)
+    ]
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    click_id: Annotated[
+        str | None,
+        Field(description='Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)'),
+    ] = None
+    click_id_type: Annotated[
+        str | None,
+        Field(description='Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)'),
+    ] = None
+    client_ip: Annotated[
+        str | None, Field(description='Client IP address for probabilistic matching')
+    ] = None
+    client_user_agent: Annotated[
+        str | None, Field(description='Client user agent string for probabilistic matching')
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid2(Uid):
+    pass
+
+
+class UserMatch2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    uids: Annotated[
+        list[Uid2] | None, Field(description='Universal ID values for user matching', min_length=1)
+    ] = None
+    hashed_email: Annotated[
+        str,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ]
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    click_id: Annotated[
+        str | None,
+        Field(description='Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)'),
+    ] = None
+    click_id_type: Annotated[
+        str | None,
+        Field(description='Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)'),
+    ] = None
+    client_ip: Annotated[
+        str | None, Field(description='Client IP address for probabilistic matching')
+    ] = None
+    client_user_agent: Annotated[
+        str | None, Field(description='Client user agent string for probabilistic matching')
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid3(Uid):
+    pass
+
+
+class UserMatch3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    uids: Annotated[
+        list[Uid3] | None, Field(description='Universal ID values for user matching', min_length=1)
+    ] = None
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ]
+    click_id: Annotated[
+        str | None,
+        Field(description='Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)'),
+    ] = None
+    click_id_type: Annotated[
+        str | None,
+        Field(description='Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)'),
+    ] = None
+    client_ip: Annotated[
+        str | None, Field(description='Client IP address for probabilistic matching')
+    ] = None
+    client_user_agent: Annotated[
+        str | None, Field(description='Client user agent string for probabilistic matching')
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid4(Uid):
+    pass
+
+
+class UserMatch4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    uids: Annotated[
+        list[Uid4] | None, Field(description='Universal ID values for user matching', min_length=1)
+    ] = None
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    click_id: Annotated[
+        str, Field(description='Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)')
+    ]
+    click_id_type: Annotated[
+        str | None,
+        Field(description='Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)'),
+    ] = None
+    client_ip: Annotated[
+        str | None, Field(description='Client IP address for probabilistic matching')
+    ] = None
+    client_user_agent: Annotated[
+        str | None, Field(description='Client user agent string for probabilistic matching')
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid5(Uid):
+    pass
+
+
+class UserMatch5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    uids: Annotated[
+        list[Uid5] | None, Field(description='Universal ID values for user matching', min_length=1)
+    ] = None
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234). Buyer must normalize to E.164 before hashing.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    click_id: Annotated[
+        str | None,
+        Field(description='Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)'),
+    ] = None
+    click_id_type: Annotated[
+        str | None,
+        Field(description='Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)'),
+    ] = None
+    client_ip: Annotated[str, Field(description='Client IP address for probabilistic matching')]
+    client_user_agent: Annotated[
+        str, Field(description='Client user agent string for probabilistic matching')
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Content(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    id: Annotated[str, Field(description='Product or content identifier')]
+    quantity: Annotated[int | None, Field(description='Quantity of this item', ge=1)] = None
+    price: Annotated[float | None, Field(description='Price per unit of this item', ge=0.0)] = None
+    brand: Annotated[str | None, Field(description='Brand name of this item')] = None
+
+
+class CustomData(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    value: Annotated[
+        float | None,
+        Field(
+            description='Monetary value of the event (should be accompanied by currency)', ge=0.0
+        ),
+    ] = None
+    currency: Annotated[
+        str | None, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')
+    ] = None
+    order_id: Annotated[str | None, Field(description='Unique order or transaction identifier')] = (
+        None
+    )
+    content_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Item identifiers for catalog attribution. Values are matched against catalog items using the identifier type declared by the catalog's content_id_type field (e.g., SKUs, GTINs, or vertical-specific IDs like job_id)."
+        ),
+    ] = None
+    content_type: Annotated[
+        str | None,
+        Field(
+            description="Category of content associated with the event (e.g., 'product', 'job', 'hotel'). Corresponds to the catalog type when used for catalog attribution."
+        ),
+    ] = None
+    content_name: Annotated[str | None, Field(description='Name of the product or content')] = None
+    content_category: Annotated[
+        str | None, Field(description='Category of the product or content')
+    ] = None
+    num_items: Annotated[int | None, Field(description='Number of items in the event', ge=0)] = None
+    search_string: Annotated[str | None, Field(description='Search query for search events')] = None
+    contents: Annotated[
+        list[Content] | None, Field(description='Per-item details for e-commerce events')
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ActionSource(Enum):
+    website = 'website'
+    app = 'app'
+    offline = 'offline'
+    phone_call = 'phone_call'
+    chat = 'chat'
+    email = 'email'
+    in_store = 'in_store'
+    system_generated = 'system_generated'
+    other = 'other'
+
+
+class Event(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for deduplication (scoped to event_type + event_source_id)',
+            max_length=256,
+            min_length=1,
+        ),
+    ]
+    event_type: Annotated[EventType, Field(description='Standard event type', title='Event Type')]
+    event_time: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when the event occurred')
+    ]
+    user_match: Annotated[
+        UserMatch | UserMatch2 | UserMatch3 | UserMatch4 | UserMatch5 | None,
+        Field(description='User identifiers for attribution matching', title='User Match'),
+    ] = None
+    custom_data: Annotated[
+        CustomData | None,
+        Field(
+            description='Event-specific data (value, currency, items, etc.)',
+            title='Event Custom Data',
+        ),
+    ] = None
+    action_source: Annotated[
+        ActionSource | None, Field(description='Where the event originated', title='Action Source')
+    ] = None
+    event_source_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL where the event occurred (required when action_source is 'website')"
+        ),
+    ] = None
+    custom_event_name: Annotated[
+        str | None, Field(description="Name for custom events (used when event_type is 'custom')")
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class LogEventRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    event_source_id: Annotated[
+        str, Field(description='Event source configured on the account via sync_event_sources')
+    ]
+    test_event_code: Annotated[
+        str | None,
+        Field(
+            description="Test event code for validation without affecting production data. Events with this code appear in the platform's test events UI."
+        ),
+    ] = None
+    events: Annotated[
+        list[Event], Field(description='Events to log', max_length=10000, min_length=1)
+    ]
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate event logging on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/log_event_response.py b/src/adcp/types/generated_poc/bundled/media_buy/log_event_response.py
new file mode 100644
index 000000000..31a598d31
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/log_event_response.py
@@ -0,0 +1,132 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/log_event_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class PartialFailure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_id: Annotated[str, Field(description='ID of the failed event')]
+    code: Annotated[str, Field(description='Error code')]
+    message: Annotated[str, Field(description='Human-readable error message')]
+
+
+class LogEventResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    events_received: Annotated[int, Field(description='Number of events received', ge=0)]
+    events_processed: Annotated[
+        int, Field(description='Number of events successfully queued for processing', ge=0)
+    ]
+    partial_failures: Annotated[
+        list[PartialFailure] | None, Field(description='Events that failed validation')
+    ] = None
+    warnings: Annotated[
+        list[str] | None,
+        Field(
+            description='Non-fatal issues (low match quality, missing recommended fields, deprecation notices)'
+        ),
+    ] = None
+    match_quality: Annotated[
+        float | None,
+        Field(
+            description='Overall match quality score for the batch (0.0 = no matches, 1.0 = all matched)',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class LogEventResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[list[Error], Field(description='Operation-level errors', min_length=1)]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+LogEventResponse = LogEventResponse3 | LogEventResponse4
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/package_request.py b/src/adcp/types/generated_poc/bundled/media_buy/package_request.py
new file mode 100644
index 000000000..71ae4fa78
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/package_request.py
@@ -0,0 +1,4819 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/package_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel, StringConstraints
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class Pacing(Enum):
+    even = 'even'
+    asap = 'asap'
+    front_loaded = 'front_loaded'
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Metric(Enum):
+    clicks = 'clicks'
+    views = 'views'
+    completed_views = 'completed_views'
+    viewed_seconds = 'viewed_seconds'
+    attention_seconds = 'attention_seconds'
+    attention_score = 'attention_score'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    reach = 'reach'
+
+
+class ReachUnit(AdCPBaseModel):
+    pass
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class Window(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class TargetFrequency(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ]
+    max: Annotated[
+        int | None,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ] = None
+    window: Annotated[
+        Window,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Window15(Window):
+    pass
+
+
+class TargetFrequency7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int | None,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ] = None
+    max: Annotated[
+        int,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ]
+    window: Annotated[
+        Window15,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Target(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[
+        float, Field(description='Target cost per metric unit in the buy currency', gt=0.0)
+    ]
+
+
+class Target16(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['threshold_rate']
+    value: Annotated[
+        float,
+        Field(
+            description='Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).',
+            gt=0.0,
+        ),
+    ]
+
+
+class OptimizationGoals(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['metric']
+    metric: Annotated[
+        Metric,
+        Field(
+            description="Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions — see view_duration_seconds), reach (unique audience reach — see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing — social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins — signals of intent to return), profile_visits (visits to the brand's in-platform page — profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+        ),
+    ]
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description="Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+        ),
+    ] = None
+    target_frequency: Annotated[
+        TargetFrequency | TargetFrequency7 | None,
+        Field(
+            description="Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed."
+        ),
+    ] = None
+    view_duration_seconds: Annotated[
+        float | None,
+        Field(
+            description="Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2–15 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values — silent rounding would create measurement discrepancies.",
+            gt=0.0,
+        ),
+    ] = None
+    target: Annotated[
+        Target | Target16 | None,
+        Field(
+            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class EventSource(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_source_id: Annotated[
+        str,
+        Field(
+            description='Event source to include (must be configured on this account via sync_event_sources)',
+            min_length=1,
+        ),
+    ]
+    event_type: Annotated[
+        ConversionEvent,
+        Field(
+            description='Event type to include from this source (e.g., purchase, lead, app_install, refund)',
+            title='Event Type',
+        ),
+    ]
+    custom_event_name: Annotated[
+        str | None,
+        Field(
+            description="Required when event_type is 'custom'. Platform-specific name for the custom event."
+        ),
+    ] = None
+    value_field: Annotated[
+        str | None,
+        Field(
+            description="Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' — sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs — the seller maps it to their platform's value ingestion mechanism."
+        ),
+    ] = None
+    value_factor: Annotated[
+        float | None,
+        Field(
+            description="Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs — the seller applies it when computing aggregated value metrics."
+        ),
+    ] = 1
+
+
+class Target17(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[float, Field(description='Target cost per event in the buy currency', gt=0.0)]
+
+
+class Target18(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['per_ad_spend']
+    value: Annotated[
+        float,
+        Field(description='Target return ratio (e.g., 4.0 means $4 of value per $1 spent)', gt=0.0),
+    ]
+
+
+class Target19(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['maximize_value']
+
+
+class PostClick(Window):
+    pass
+
+
+class PostView(Window):
+    pass
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick,
+        Field(
+            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
+        ),
+    ]
+    post_view: Annotated[
+        PostView | None,
+        Field(
+            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
+        ),
+    ] = None
+
+
+class OptimizationGoals5(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['event']
+    event_sources: Annotated[
+        list[EventSource],
+        Field(
+            description='Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries — the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.',
+            min_length=1,
+        ),
+    ]
+    target: Annotated[
+        Target17 | Target18 | Target19 | None,
+        Field(
+            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget — regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.'
+        ),
+    ] = None
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class GeoCountry(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class GeoCountriesExcludeItem(GeoCountry):
+    pass
+
+
+class GeoRegion(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+
+
+class GeoRegionsExcludeItem(GeoRegion):
+    pass
+
+
+class System(Enum):
+    nielsen_dma = 'nielsen_dma'
+    uk_itl1 = 'uk_itl1'
+    uk_itl2 = 'uk_itl2'
+    eurostat_nuts2 = 'eurostat_nuts2'
+    custom = 'custom'
+
+
+class GeoMetro(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoMetrosExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class System15(Enum):
+    us_zip = 'us_zip'
+    us_zip_plus_four = 'us_zip_plus_four'
+    gb_outward = 'gb_outward'
+    gb_full = 'gb_full'
+    ca_fsa = 'ca_fsa'
+    ca_full = 'ca_full'
+    de_plz = 'de_plz'
+    fr_code_postal = 'fr_code_postal'
+    au_postcode = 'au_postcode'
+    ch_plz = 'ch_plz'
+    at_plz = 'at_plz'
+
+
+class GeoPostalArea(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System15,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoPostalAreasExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System15,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class Day(Enum):
+    monday = 'monday'
+    tuesday = 'tuesday'
+    wednesday = 'wednesday'
+    thursday = 'thursday'
+    friday = 'friday'
+    saturday = 'saturday'
+    sunday = 'sunday'
+
+
+class DaypartTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    days: Annotated[
+        list[Day],
+        Field(
+            description='Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).',
+            min_length=1,
+        ),
+    ]
+    start_hour: Annotated[
+        int,
+        Field(
+            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
+            ge=0,
+            le=23,
+        ),
+    ]
+    end_hour: Annotated[
+        int,
+        Field(
+            description='End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.',
+            ge=1,
+            le=24,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+        ),
+    ] = None
+
+
+class Suppress(Window):
+    pass
+
+
+class Per(ReachUnit):
+    pass
+
+
+class Window16(Window):
+    pass
+
+
+class FrequencyCap(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ]
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window16 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress10(Window):
+    pass
+
+
+class Window17(Window):
+    pass
+
+
+class FrequencyCap10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress10 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ]
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window17 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress11(Window):
+    pass
+
+
+class Window18(Window):
+    pass
+
+
+class FrequencyCap11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress11 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ]
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window18 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class PropertyList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the property list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the property list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the collection list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the collection list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionListExclude(CollectionList):
+    pass
+
+
+class AcceptedMethod(Enum):
+    facial_age_estimation = 'facial_age_estimation'
+    id_document = 'id_document'
+    digital_id = 'digital_id'
+    credit_card = 'credit_card'
+    world_id = 'world_id'
+
+
+class AgeRestriction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[int, Field(description='Minimum age required', ge=13, le=99)]
+    verification_required: Annotated[
+        bool | None,
+        Field(description='Whether verified age (not inferred) is required for compliance'),
+    ] = False
+    accepted_methods: Annotated[
+        list[AcceptedMethod] | None,
+        Field(
+            description='Accepted verification methods. If omitted, any method the platform supports is acceptable.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class DevicePlatformEnum(Enum):
+    ios = 'ios'
+    android = 'android'
+    windows = 'windows'
+    macos = 'macos'
+    linux = 'linux'
+    chromeos = 'chromeos'
+    tvos = 'tvos'
+    tizen = 'tizen'
+    webos = 'webos'
+    fire_os = 'fire_os'
+    roku_os = 'roku_os'
+    unknown = 'unknown'
+
+
+class DeviceTypeEnum(Enum):
+    desktop = 'desktop'
+    mobile = 'mobile'
+    tablet = 'tablet'
+    ctv = 'ctv'
+    dooh = 'dooh'
+    unknown = 'unknown'
+
+
+class StoreCatchment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str, Field(description='Synced store-type catalog ID from sync_catalogs.')
+    ]
+    store_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific stores within the catalog. Omit to target all stores.',
+            min_length=1,
+        ),
+    ] = None
+    catchment_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Unit77(Enum):
+    min = 'min'
+    hr = 'hr'
+
+
+class TravelTime(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
+    unit: Annotated[Unit77, Field(description='Time unit.')]
+
+
+class TransportMode(Enum):
+    walking = 'walking'
+    cycling = 'cycling'
+    driving = 'driving'
+    public_transport = 'public_transport'
+
+
+class Unit78(Enum):
+    km = 'km'
+    mi = 'mi'
+    m = 'm'
+
+
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    unit: Annotated[Unit78, Field(description='Distance unit.', title='Distance Unit')]
+
+
+class Type59(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
+
+
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type59, Field(description='GeoJSON geometry type.')]
+    coordinates: Annotated[
+        list[Any],
+        Field(
+            description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
+        ),
+    ]
+
+
+class GeoProximity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ]
+    transport_mode: Annotated[
+        TransportMode,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ]
+    radius: Annotated[
+        Radius | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime11(TravelTime):
+    pass
+
+
+class Radius11(Radius):
+    pass
+
+
+class Geometry11(Geometry):
+    pass
+
+
+class GeoProximity12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime11 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius11,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ]
+    geometry: Annotated[
+        Geometry11 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime12(TravelTime):
+    pass
+
+
+class Radius12(Radius):
+    pass
+
+
+class Geometry12(Geometry):
+    pass
+
+
+class GeoProximity13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float | None,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ] = None
+    lng: Annotated[
+        float | None,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime12 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius12 | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry12,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class LanguageItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z]{2}$')]
+
+
+class MatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class KeywordTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[
+        MatchType,
+        Field(
+            description='Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly'
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class NegativeKeyword(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to exclude', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type for exclusion')]
+
+
+class TargetingOverlay(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo_countries: Annotated[
+        list[GeoCountry] | None,
+        Field(
+            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_countries_exclude: Annotated[
+        list[GeoCountriesExcludeItem] | None,
+        Field(
+            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions: Annotated[
+        list[GeoRegion] | None,
+        Field(
+            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions_exclude: Annotated[
+        list[GeoRegionsExcludeItem] | None,
+        Field(
+            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_metros: Annotated[
+        list[GeoMetro] | None,
+        Field(
+            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_metros_exclude: Annotated[
+        list[GeoMetrosExcludeItem] | None,
+        Field(
+            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas: Annotated[
+        list[GeoPostalArea] | None,
+        Field(
+            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas_exclude: Annotated[
+        list[GeoPostalAreasExcludeItem] | None,
+        Field(
+            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    daypart_targets: Annotated[
+        list[DaypartTarget] | None,
+        Field(
+            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
+            min_length=1,
+        ),
+    ] = None
+    axe_include_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
+        ),
+    ] = None
+    axe_exclude_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
+        ),
+    ] = None
+    audience_include: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    audience_exclude: Annotated[
+        list[str] | None,
+        Field(
+            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    frequency_cap: Annotated[
+        FrequencyCap | FrequencyCap10 | FrequencyCap11 | None,
+        Field(
+            description='Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.',
+            title='Frequency Cap',
+        ),
+    ] = None
+    property_list: Annotated[
+        PropertyList | None,
+        Field(
+            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+            title='Property List Reference',
+        ),
+    ] = None
+    collection_list: Annotated[
+        CollectionList | None,
+        Field(
+            description='Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.',
+            title='Collection List Reference',
+        ),
+    ] = None
+    collection_list_exclude: Annotated[
+        CollectionListExclude | None,
+        Field(
+            description="Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+            title='Collection List Reference',
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(
+            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        list[DevicePlatformEnum] | None,
+        Field(
+            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
+            min_length=1,
+        ),
+    ] = None
+    device_type: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    device_type_exclude: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    store_catchments: Annotated[
+        list[StoreCatchment] | None,
+        Field(
+            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
+            min_length=1,
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity12 | GeoProximity13] | None,
+        Field(
+            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    language: Annotated[
+        list[LanguageItem] | None,
+        Field(
+            description="Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+            min_length=1,
+        ),
+    ] = None
+    keyword_targets: Annotated[
+        list[KeywordTarget] | None,
+        Field(
+            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords: Annotated[
+        list[NegativeKeyword] | None,
+        Field(
+            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Vendor(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class BillingMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    max_variance_percent: Annotated[
+        float | None,
+        Field(
+            description="Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review).",
+            ge=0.0,
+            lt=100.0,
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=[
+                'live',
+                'c3',
+                'c7',
+                'tentative',
+                'final',
+                'post_ivt',
+                'post_sivt',
+                'downloads_30d',
+            ],
+        ),
+    ] = None
+
+
+class AvailableRemedy(Enum):
+    additional_delivery = 'additional_delivery'
+    credit = 'credit'
+    invoice_adjustment = 'invoice_adjustment'
+
+
+class MakegoodPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_remedies: Annotated[
+        list[AvailableRemedy],
+        Field(
+            description='Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.',
+            min_length=1,
+        ),
+    ]
+
+
+class MeasurementTerms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    billing_measurement: Annotated[
+        BillingMeasurement | None,
+        Field(
+            description="Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV)."
+        ),
+    ] = None
+    makegood_policy: Annotated[
+        MakegoodPolicy | None,
+        Field(
+            description='Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.'
+        ),
+    ] = None
+
+
+class Metric8(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class PerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        Metric8,
+        Field(
+            description='The performance metric this standard applies to.',
+            title='Performance Standard Metric',
+        ),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            title='Viewability Standard',
+        ),
+    ] = None
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+
+
+class CreativeAssignment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Relative delivery weight for this creative (0–100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally — a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy138(DeclaredBy):
+    pass
+
+
+class RenderGuidance138(RenderGuidance):
+    pass
+
+
+class Jurisdiction146(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance138 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure139(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction146] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem138(VerificationItem):
+    pass
+
+
+class Provenance139(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy138 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure139 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem138] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets230(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance139 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy139(DeclaredBy):
+    pass
+
+
+class RenderGuidance139(RenderGuidance):
+    pass
+
+
+class Jurisdiction147(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance139 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure140(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction147] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem139(VerificationItem):
+    pass
+
+
+class Provenance140(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy139 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure140 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem139] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets231(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance140 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy140(DeclaredBy):
+    pass
+
+
+class RenderGuidance140(RenderGuidance):
+    pass
+
+
+class Jurisdiction148(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance140 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure141(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction148] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem140(VerificationItem):
+    pass
+
+
+class Provenance141(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy140 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure141 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem140] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets232(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance141 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy141(DeclaredBy):
+    pass
+
+
+class RenderGuidance141(RenderGuidance):
+    pass
+
+
+class Jurisdiction149(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance141 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure142(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction149] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem141(VerificationItem):
+    pass
+
+
+class Provenance142(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy141 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure142 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem141] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets233(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance142 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy142(DeclaredBy):
+    pass
+
+
+class RenderGuidance142(RenderGuidance):
+    pass
+
+
+class Jurisdiction150(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance142 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure143(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction150] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem142(VerificationItem):
+    pass
+
+
+class Provenance143(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy142 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure143 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem142] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets234(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance143 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy143(DeclaredBy):
+    pass
+
+
+class RenderGuidance143(RenderGuidance):
+    pass
+
+
+class Jurisdiction151(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance143 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure144(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction151] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem143(VerificationItem):
+    pass
+
+
+class Provenance144(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy143 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure144 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem143] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets235(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance144 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy144(DeclaredBy):
+    pass
+
+
+class RenderGuidance144(RenderGuidance):
+    pass
+
+
+class Jurisdiction152(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance144 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure145(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction152] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem144(VerificationItem):
+    pass
+
+
+class Provenance145(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy144 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure145 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem144] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets236(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance145 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy145(DeclaredBy):
+    pass
+
+
+class RenderGuidance145(RenderGuidance):
+    pass
+
+
+class Jurisdiction153(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance145 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure146(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction153] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem145(VerificationItem):
+    pass
+
+
+class Provenance146(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy145 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure146 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem145] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets237(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance146 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method24(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method24, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy146(DeclaredBy):
+    pass
+
+
+class RenderGuidance146(RenderGuidance):
+    pass
+
+
+class Jurisdiction154(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance146 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure147(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction154] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem146(VerificationItem):
+    pass
+
+
+class Provenance147(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy146 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure147 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem146] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets238(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance147 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy147(DeclaredBy):
+    pass
+
+
+class RenderGuidance147(RenderGuidance):
+    pass
+
+
+class Jurisdiction155(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance147 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure148(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction155] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem147(VerificationItem):
+    pass
+
+
+class Provenance148(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy147 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure148 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem147] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets239(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance148 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent30(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy148(DeclaredBy):
+    pass
+
+
+class RenderGuidance148(RenderGuidance):
+    pass
+
+
+class Jurisdiction156(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance148 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure149(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction156] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem148(VerificationItem):
+    pass
+
+
+class Provenance149(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy148 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure149 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem148] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets240(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent30] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance149 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy149(DeclaredBy):
+    pass
+
+
+class RenderGuidance149(RenderGuidance):
+    pass
+
+
+class Jurisdiction157(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance149 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure150(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction157] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem149(VerificationItem):
+    pass
+
+
+class Provenance150(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy149 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure150 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem149] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets241(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent30] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance150 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets242(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role180(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role180,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction158(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction158] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets243(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class FeedFieldMapping11(FeedFieldMapping):
+    pass
+
+
+class Assets244(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping11] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Input(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this preview variant')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to apply for this preview')
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(description='Natural language description of the context for AI-generated content'),
+    ] = None
+
+
+class Status(Enum):
+    processing = 'processing'
+    pending_review = 'pending_review'
+    approved = 'approved'
+    rejected = 'rejected'
+    archived = 'archived'
+
+
+class Type63(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type63,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy150(DeclaredBy):
+    pass
+
+
+class RenderGuidance150(RenderGuidance):
+    pass
+
+
+class Jurisdiction159(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance150 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure151(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction159] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem150(VerificationItem):
+    pass
+
+
+class Provenance151(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy150 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure151 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem150] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.',
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets230
+            | Assets231
+            | Assets232
+            | Assets233
+            | Assets234
+            | Assets235
+            | Assets236
+            | Assets237
+            | Assets238
+            | Assets239
+            | Assets240
+            | Assets241
+            | Assets242
+            | Assets243
+            | Assets244,
+        ],
+        Field(description='Assets required by the format, keyed by asset_id'),
+    ]
+    inputs: Annotated[
+        list[Input] | None,
+        Field(
+            description='Preview contexts for generative formats - defines what scenarios to generate previews for'
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
+    ] = None
+    status: Annotated[
+        Status | None,
+        Field(
+            description="For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+            title='Creative Status',
+        ),
+    ] = None
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            min_length=1,
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance151 | None,
+        Field(
+            description='Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class PackageRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    product_id: Annotated[str, Field(description='Product ID for this package')]
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.',
+            min_length=1,
+        ),
+    ] = None
+    budget: Annotated[
+        float,
+        Field(description="Budget allocation for this package in the media buy's currency", ge=0.0),
+    ]
+    pacing: Annotated[
+        Pacing | None, Field(description='Budget pacing strategy', title='Pacing')
+    ] = None
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description="ID of the selected pricing option from the product's pricing_options array"
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            ge=0.0,
+        ),
+    ] = None
+    impressions: Annotated[
+        float | None, Field(description='Impression goal for this package', ge=0.0)
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.'
+        ),
+    ] = False
+    catalogs: Annotated[
+        list[Catalog] | None,
+        Field(
+            description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.'
+        ),
+    ] = None
+    optimization_goals: Annotated[
+        list[OptimizationGoals | OptimizationGoals5] | None,
+        Field(
+            description='Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.',
+            min_length=1,
+        ),
+    ] = None
+    targeting_overlay: Annotated[
+        TargetingOverlay | None,
+        Field(
+            description='Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).',
+            title='Targeting Overlay',
+        ),
+    ] = None
+    measurement_terms: Annotated[
+        MeasurementTerms | None,
+        Field(
+            description="Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply.",
+            title='Measurement Terms',
+        ),
+    ] = None
+    performance_standards: Annotated[
+        list[PerformanceStandard] | None,
+        Field(
+            description="Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+            min_length=1,
+        ),
+    ] = None
+    creative_assignments: Annotated[
+        list[CreativeAssignment] | None,
+        Field(
+            description='Assign existing library creatives to this package with optional weights and placement targeting',
+            min_length=1,
+        ),
+    ] = None
+    creatives: Annotated[
+        list[Creative] | None,
+        Field(
+            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
+            max_length=100,
+            min_length=1,
+        ),
+    ] = None
+    agency_estimate_number: Annotated[
+        str | None,
+        Field(
+            description='Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy).',
+            max_length=100,
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/provide_performance_feedback_request.py b/src/adcp/types/generated_poc/bundled/media_buy/provide_performance_feedback_request.py
new file mode 100644
index 000000000..93f504614
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/provide_performance_feedback_request.py
@@ -0,0 +1,107 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/provide_performance_feedback_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class MeasurementPeriod(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    start: Annotated[AwareDatetime, Field(description='Start timestamp (inclusive), ISO 8601')]
+    end: Annotated[AwareDatetime, Field(description='End timestamp (inclusive), ISO 8601')]
+
+
+class MetricType(Enum):
+    overall_performance = 'overall_performance'
+    conversion_rate = 'conversion_rate'
+    brand_lift = 'brand_lift'
+    click_through_rate = 'click_through_rate'
+    completion_rate = 'completion_rate'
+    viewability = 'viewability'
+    brand_safety = 'brand_safety'
+    cost_efficiency = 'cost_efficiency'
+
+
+class FeedbackSource(Enum):
+    buyer_attribution = 'buyer_attribution'
+    third_party_measurement = 'third_party_measurement'
+    platform_analytics = 'platform_analytics'
+    verification_partner = 'verification_partner'
+
+
+class ProvidePerformanceFeedbackRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    media_buy_id: Annotated[str, Field(description="Seller's media buy identifier", min_length=1)]
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate feedback submissions on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    measurement_period: Annotated[
+        MeasurementPeriod,
+        Field(description='Time period for performance measurement', title='Datetime Range'),
+    ]
+    performance_index: Annotated[
+        float,
+        Field(
+            description='Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)',
+            ge=0.0,
+        ),
+    ]
+    package_id: Annotated[
+        str | None,
+        Field(
+            description='Specific package within the media buy (if feedback is package-specific)',
+            min_length=1,
+        ),
+    ] = None
+    creative_id: Annotated[
+        str | None,
+        Field(
+            description='Specific creative asset (if feedback is creative-specific)', min_length=1
+        ),
+    ] = None
+    metric_type: Annotated[
+        MetricType | None,
+        Field(description='The business metric being measured', title='Metric Type'),
+    ] = MetricType.overall_performance
+    feedback_source: Annotated[
+        FeedbackSource | None,
+        Field(description='Source of the performance data', title='Feedback Source'),
+    ] = FeedbackSource.buyer_attribution
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/provide_performance_feedback_response.py b/src/adcp/types/generated_poc/bundled/media_buy/provide_performance_feedback_response.py
new file mode 100644
index 000000000..4ea87d852
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/provide_performance_feedback_response.py
@@ -0,0 +1,112 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/provide_performance_feedback_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class ProvidePerformanceFeedbackResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    success: Annotated[
+        Literal[True],
+        Field(description='Whether the performance feedback was successfully received'),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class ProvidePerformanceFeedbackResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error],
+        Field(
+            description='Array of errors explaining why feedback was rejected (e.g., invalid measurement period, missing campaign data)',
+            min_length=1,
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+ProvidePerformanceFeedbackResponse = ProvidePerformanceFeedbackResponse3 | ProvidePerformanceFeedbackResponse4
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/sync_audiences_request.py b/src/adcp/types/generated_poc/bundled/media_buy/sync_audiences_request.py
new file mode 100644
index 000000000..dd5602813
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/sync_audiences_request.py
@@ -0,0 +1,502 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/sync_audiences_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field, RootModel
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account33(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class AudienceType(Enum):
+    crm = 'crm'
+    suppression = 'suppression'
+    lookalike_seed = 'lookalike_seed'
+
+
+class Tag(RootModel[str]):
+    root: Annotated[str, Field(min_length=1)]
+
+
+class Type(Enum):
+    rampid = 'rampid'
+    rampid_derived = 'rampid_derived'
+    id5 = 'id5'
+    uid2 = 'uid2'
+    euid = 'euid'
+    pairid = 'pairid'
+    maid = 'maid'
+    hashed_email = 'hashed_email'
+    publisher_first_party = 'publisher_first_party'
+    other = 'other'
+
+
+class Uid(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Type, Field(description='Universal ID type', title='UID Type')]
+    value: Annotated[str, Field(description='Universal ID value')]
+
+
+class Add(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    external_id: Annotated[
+        str,
+        Field(
+            description="Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+        ),
+    ]
+    hashed_email: Annotated[
+        str,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ]
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    uids: Annotated[
+        list[Uid] | None,
+        Field(
+            description='Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid7(Uid):
+    pass
+
+
+class Add1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    external_id: Annotated[
+        str,
+        Field(
+            description="Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+        ),
+    ]
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ]
+    uids: Annotated[
+        list[Uid7] | None,
+        Field(
+            description='Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid8(Uid):
+    pass
+
+
+class Add2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    external_id: Annotated[
+        str,
+        Field(
+            description="Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+        ),
+    ]
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    uids: Annotated[
+        list[Uid8],
+        Field(
+            description='Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.',
+            min_length=1,
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid9(Uid):
+    pass
+
+
+class Remove(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    external_id: Annotated[
+        str,
+        Field(
+            description="Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+        ),
+    ]
+    hashed_email: Annotated[
+        str,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ]
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    uids: Annotated[
+        list[Uid9] | None,
+        Field(
+            description='Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid10(Uid):
+    pass
+
+
+class Remove1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    external_id: Annotated[
+        str,
+        Field(
+            description="Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+        ),
+    ]
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ]
+    uids: Annotated[
+        list[Uid10] | None,
+        Field(
+            description='Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Uid11(Uid):
+    pass
+
+
+class Remove2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    external_id: Annotated[
+        str,
+        Field(
+            description="Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers)."
+        ),
+    ]
+    hashed_email: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of lowercase, trimmed email address.',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    hashed_phone: Annotated[
+        str | None,
+        Field(
+            description='SHA-256 hash of E.164-formatted phone number (e.g. +12065551234).',
+            pattern='^[a-f0-9]{64}$',
+        ),
+    ] = None
+    uids: Annotated[
+        list[Uid11],
+        Field(
+            description='Universal ID values (MAIDs, RampID, UID2, etc.) for user matching.',
+            min_length=1,
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ConsentBasis(Enum):
+    consent = 'consent'
+    legitimate_interest = 'legitimate_interest'
+    contract = 'contract'
+    legal_obligation = 'legal_obligation'
+
+
+class Audience(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    audience_id: Annotated[
+        str,
+        Field(
+            description="Buyer's identifier for this audience. Used to reference the audience in targeting overlays."
+        ),
+    ]
+    name: Annotated[str | None, Field(description='Human-readable name for this audience')] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this audience's composition or purpose (e.g., 'High-value customers who purchased in the last 90 days')."
+        ),
+    ] = None
+    audience_type: Annotated[
+        AudienceType | None,
+        Field(
+            description="Intended use for this audience. 'crm': target these users. 'suppression': exclude these users from delivery. 'lookalike_seed': use as a seed for the seller's lookalike modeling. Sellers may handle audiences differently based on type (e.g., suppression lists bypass minimum size requirements on some platforms)."
+        ),
+    ] = None
+    tags: Annotated[
+        list[Tag] | None,
+        Field(
+            description="Buyer-defined tags for organizing and filtering audiences (e.g., 'holiday_2026', 'high_ltv'). Tags are stored by the seller and returned in discovery-only calls."
+        ),
+    ] = None
+    add: Annotated[
+        list[Add | Add1 | Add2] | None,
+        Field(
+            description='Members to add to this audience. Hashed before sending — normalize emails to lowercase+trim, phones to E.164.',
+            min_length=1,
+        ),
+    ] = None
+    remove: Annotated[
+        list[Remove | Remove1 | Remove2] | None,
+        Field(
+            description='Members to remove from this audience. If the same identifier appears in both add and remove in a single request, remove takes precedence.',
+            min_length=1,
+        ),
+    ] = None
+    delete: Annotated[
+        bool | None,
+        Field(
+            description='When true, delete this audience from the account entirely. All other fields on this audience object are ignored. Use this to delete a specific audience without affecting others.'
+        ),
+    ] = None
+    consent_basis: Annotated[
+        ConsentBasis | None,
+        Field(
+            description='GDPR lawful basis for processing this audience list. Informational — not validated by the protocol, but required by some sellers operating in regulated markets (e.g. EU). When omitted, the buyer asserts they have a lawful basis appropriate to their jurisdiction.',
+            title='Consent Basis',
+        ),
+    ] = None
+
+
+class SyncAudiencesRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `audience_id` gives resource-level dedup per audience, but the sync envelope emits audit events and may trigger downstream refreshes — this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `audiences` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    account: Annotated[
+        Account | Account33,
+        Field(
+            description='Account to manage audiences for.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ]
+    audiences: Annotated[
+        list[Audience] | None,
+        Field(
+            description='Audiences to sync (create or update). When omitted, the call is discovery-only and returns all existing audiences on the account without modification.',
+            min_length=1,
+        ),
+    ] = None
+    delete_missing: Annotated[
+        bool | None,
+        Field(
+            description='When true, buyer-managed audiences on the account not included in this sync will be removed. Does not affect seller-managed audiences. Do not combine with an omitted audiences array or all buyer-managed audiences will be deleted.'
+        ),
+    ] = False
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/sync_audiences_response.py b/src/adcp/types/generated_poc/bundled/media_buy/sync_audiences_response.py
new file mode 100644
index 000000000..513b35bc3
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/sync_audiences_response.py
@@ -0,0 +1,252 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/sync_audiences_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class Action(Enum):
+    created = 'created'
+    updated = 'updated'
+    unchanged = 'unchanged'
+    deleted = 'deleted'
+    failed = 'failed'
+
+
+class Status(Enum):
+    processing = 'processing'
+    ready = 'ready'
+    too_small = 'too_small'
+
+
+class IdType(Enum):
+    hashed_email = 'hashed_email'
+    hashed_phone = 'hashed_phone'
+    rampid = 'rampid'
+    id5 = 'id5'
+    uid2 = 'uid2'
+    euid = 'euid'
+    pairid = 'pairid'
+    maid = 'maid'
+    other = 'other'
+
+
+class MatchBreakdownItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    id_type: Annotated[
+        IdType,
+        Field(
+            description='Identifier type. Combines hashed PII types (hashed_email, hashed_phone) with universal ID types (rampid, uid2, maid, etc.).',
+            title='Match ID Type',
+        ),
+    ]
+    submitted: Annotated[
+        int,
+        Field(
+            description='Cumulative number of members submitted with this identifier type across all syncs (matches total_uploaded_count semantics, not uploaded_count). Compare with matched to calculate per-type match rate.',
+            ge=0,
+        ),
+    ]
+    matched: Annotated[
+        int,
+        Field(
+            description='Cumulative number of members matched via this identifier type across all syncs.',
+            ge=0,
+        ),
+    ]
+    match_rate: Annotated[
+        float,
+        Field(
+            description='Match rate for this identifier type (matched / submitted). Server-authoritative — consumers should prefer this value over computing their own.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Audience(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    audience_id: Annotated[
+        str, Field(description="Audience ID from the request (buyer's identifier)")
+    ]
+    name: Annotated[str | None, Field(description='Name of the audience')] = None
+    seller_id: Annotated[
+        str | None,
+        Field(description='Seller-assigned identifier for this audience in their ad platform'),
+    ] = None
+    action: Annotated[
+        Action,
+        Field(
+            description="Action taken for this audience. 'status' is present when action is created, updated, or unchanged. 'status' is absent when action is deleted or failed."
+        ),
+    ]
+    status: Annotated[
+        Status | None,
+        Field(
+            description="Matching status. Present when action is created, updated, or unchanged; absent when action is deleted or failed. 'processing': platform is still matching members against its user base. 'ready': audience is available for targeting, matched_count is populated. 'too_small': matched audience is below the platform's minimum size — add more members and re-sync."
+        ),
+    ] = None
+    uploaded_count: Annotated[
+        int | None,
+        Field(
+            description='Number of members submitted in this sync operation (delta, not cumulative). In discovery-only calls (no audiences array), this is 0.',
+            ge=0,
+        ),
+    ] = None
+    total_uploaded_count: Annotated[
+        int | None,
+        Field(
+            description='Cumulative number of members uploaded across all syncs for this audience. Compare with matched_count to calculate match rate (matched_count / total_uploaded_count). Populated when the seller tracks cumulative upload counts.',
+            ge=0,
+        ),
+    ] = None
+    matched_count: Annotated[
+        int | None,
+        Field(
+            description="Total members matched to platform users across all syncs (cumulative, not just this call). Populated when status is 'ready'.",
+            ge=0,
+        ),
+    ] = None
+    effective_match_rate: Annotated[
+        float | None,
+        Field(
+            description="Deduplicated match rate across all identifier types (matched_count / total_uploaded_count after deduplication). A single number for reach estimation. Populated when status is 'ready'.",
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    match_breakdown: Annotated[
+        list[MatchBreakdownItem] | None,
+        Field(
+            description='Per-identifier-type match results. Shows which ID types are resolving and at what rate. Helps buyers decide which identifiers to prioritize. Populated when the seller can report per-type matching. Omitted when the seller only supports aggregate match counts.',
+            min_length=1,
+        ),
+    ] = None
+    last_synced_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp of when the most recent sync operation was accepted by the platform. Useful for agents reasoning about audience freshness. Omitted if the seller does not track this.'
+        ),
+    ] = None
+    minimum_size: Annotated[
+        int | None,
+        Field(
+            description="Minimum matched audience size required for targeting on this platform. Populated when status is 'too_small'. Helps agents know how many more members are needed.",
+            ge=1,
+        ),
+    ] = None
+    errors: Annotated[
+        list[Error] | None,
+        Field(description="Errors for this audience (only present when action='failed')"),
+    ] = None
+
+
+class SyncAudiencesResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    audiences: Annotated[
+        list[Audience], Field(description='Results for each audience on the account')
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Error30(Error):
+    pass
+
+
+class SyncAudiencesResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error30],
+        Field(description='Operation-level errors that prevented processing', min_length=1),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+SyncAudiencesResponse = SyncAudiencesResponse3 | SyncAudiencesResponse4
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/sync_catalogs_request.py b/src/adcp/types/generated_poc/bundled/media_buy/sync_catalogs_request.py
new file mode 100644
index 000000000..57abbcf8a
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/sync_catalogs_request.py
@@ -0,0 +1,489 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/sync_catalogs_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account35(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class ValidationMode(Enum):
+    strict = 'strict'
+    lenient = 'lenient'
+
+
+class Scheme(Enum):
+    Bearer = 'Bearer'
+    HMAC_SHA256 = 'HMAC-SHA256'
+
+
+class Authentication(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    schemes: Annotated[
+        list[Scheme],
+        Field(
+            description="Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+            max_length=1,
+            min_length=1,
+        ),
+    ]
+    credentials: Annotated[
+        str,
+        Field(
+            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
+            min_length=32,
+        ),
+    ]
+
+
+class PushNotificationConfig(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for task status notifications')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
+    authentication: Annotated[
+        Authentication,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
+
+
+class SyncCatalogsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `catalog_id` gives resource-level dedup per catalog, but the sync envelope emits audit events and triggers platform review for large feeds — this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `catalogs` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    account: Annotated[
+        Account | Account35,
+        Field(
+            description='Account that owns these catalogs.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ]
+    catalogs: Annotated[
+        list[Catalog] | None,
+        Field(
+            description='Array of catalog feeds to sync (create or update). When omitted, the call is discovery-only and returns all existing catalogs on the account without modification.',
+            max_length=50,
+            min_length=1,
+        ),
+    ] = None
+    catalog_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Optional filter to limit sync scope to specific catalog IDs. When provided, only these catalogs will be created/updated. Other catalogs on the account are unaffected.',
+            max_length=50,
+            min_length=1,
+        ),
+    ] = None
+    delete_missing: Annotated[
+        bool | None,
+        Field(
+            description='When true, buyer-managed catalogs on the account not included in this sync will be removed. Does not affect seller-managed catalogs. Do not combine with an omitted catalogs array or all buyer-managed catalogs will be deleted.'
+        ),
+    ] = False
+    dry_run: Annotated[
+        bool | None,
+        Field(
+            description='When true, preview changes without applying them. Returns what would be created/updated/deleted.'
+        ),
+    ] = False
+    validation_mode: Annotated[
+        ValidationMode | None,
+        Field(
+            description="Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid catalogs and reports errors.",
+            title='Validation Mode',
+        ),
+    ] = ValidationMode.strict
+    push_notification_config: Annotated[
+        PushNotificationConfig | None,
+        Field(
+            description='Optional webhook configuration for async sync notifications. Publisher will send webhook when sync completes if operation takes longer than immediate response time (common for large feeds requiring platform review).',
+            title='Push Notification Config',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/sync_catalogs_response.py b/src/adcp/types/generated_poc/bundled/media_buy/sync_catalogs_response.py
new file mode 100644
index 000000000..9ca74c64e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/sync_catalogs_response.py
@@ -0,0 +1,213 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/sync_catalogs_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class Action(Enum):
+    created = 'created'
+    updated = 'updated'
+    unchanged = 'unchanged'
+    failed = 'failed'
+    deleted = 'deleted'
+
+
+class Status(Enum):
+    approved = 'approved'
+    pending = 'pending'
+    rejected = 'rejected'
+    warning = 'warning'
+
+
+class ItemIssue(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    item_id: Annotated[str, Field(description='ID of the catalog item with an issue')]
+    status: Annotated[Status, Field(description='Item review status', title='Catalog Item Status')]
+    reasons: Annotated[list[str] | None, Field(description='Reasons for rejection or warning')] = (
+        None
+    )
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[str, Field(description='Catalog ID from the request')]
+    action: Annotated[
+        Action, Field(description='Action taken for this catalog', title='Catalog Action')
+    ]
+    platform_id: Annotated[
+        str | None, Field(description='Platform-specific ID assigned to the catalog')
+    ] = None
+    item_count: Annotated[
+        int | None, Field(description='Total number of items in the catalog after sync', ge=0)
+    ] = None
+    items_approved: Annotated[
+        int | None,
+        Field(
+            description='Number of items approved by the platform. Populated when the platform performs item-level review.',
+            ge=0,
+        ),
+    ] = None
+    items_pending: Annotated[
+        int | None,
+        Field(
+            description='Number of items pending platform review. Common for product catalogs where items must pass content policy checks.',
+            ge=0,
+        ),
+    ] = None
+    items_rejected: Annotated[
+        int | None,
+        Field(
+            description='Number of items rejected by the platform. Check item_issues for rejection reasons.',
+            ge=0,
+        ),
+    ] = None
+    item_issues: Annotated[
+        list[ItemIssue] | None,
+        Field(
+            description='Per-item issues reported by the platform (rejections, warnings). Only present when the platform performs item-level review.'
+        ),
+    ] = None
+    last_synced_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp of when the most recent sync was accepted by the platform'
+        ),
+    ] = None
+    next_fetch_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp of when the platform will next fetch the feed URL. Only present for URL-based catalogs with update_frequency.'
+        ),
+    ] = None
+    changes: Annotated[
+        list[str] | None,
+        Field(description="Field names that were modified (only present when action='updated')"),
+    ] = None
+    errors: Annotated[
+        list[Error] | None,
+        Field(description="Validation or processing errors (only present when action='failed')"),
+    ] = None
+    warnings: Annotated[
+        list[str] | None, Field(description='Non-fatal warnings about this catalog')
+    ] = None
+
+
+class SyncCatalogsResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    dry_run: Annotated[
+        bool | None, Field(description='Whether this was a dry run (no actual changes made)')
+    ] = None
+    catalogs: Annotated[
+        list[Catalog],
+        Field(
+            description="Results for each catalog processed. Items with action='failed' indicate per-catalog validation/processing failures, not operation-level failures."
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Error32(Error):
+    pass
+
+
+class SyncCatalogsResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error32],
+        Field(
+            description='Operation-level errors that prevented processing any catalogs (e.g., authentication failure, service unavailable, invalid request format)',
+            min_length=1,
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+SyncCatalogsResponse = SyncCatalogsResponse3 | SyncCatalogsResponse4
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/sync_event_sources_request.py b/src/adcp/types/generated_poc/bundled/media_buy/sync_event_sources_request.py
new file mode 100644
index 000000000..e95da9a86
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/sync_event_sources_request.py
@@ -0,0 +1,196 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/sync_event_sources_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account40(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class EventType(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class EventSource(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_source_id: Annotated[str, Field(description='Unique identifier for this event source')]
+    name: Annotated[str | None, Field(description='Human-readable name for this event source')] = (
+        None
+    )
+    event_types: Annotated[
+        list[EventType] | None,
+        Field(
+            description='Event types this source handles (e.g. purchase, lead). If omitted, accepts all event types.',
+            min_length=1,
+        ),
+    ] = None
+    allowed_domains: Annotated[
+        list[str] | None,
+        Field(description='Domains authorized to send events for this event source', min_length=1),
+    ] = None
+
+
+class SyncEventSourcesRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `event_source_id` gives resource-level dedup per source, but the sync envelope emits audit events and can trigger downstream pixel provisioning — this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `event_sources` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    account: Annotated[
+        Account | Account40,
+        Field(
+            description='Account to configure event sources for.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ]
+    event_sources: Annotated[
+        list[EventSource] | None,
+        Field(
+            description='Event sources to sync (create or update). When omitted, the call is discovery-only and returns all existing event sources on the account without modification.',
+            min_length=1,
+        ),
+    ] = None
+    delete_missing: Annotated[
+        bool | None,
+        Field(description='When true, event sources not included in this sync will be removed'),
+    ] = False
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/sync_event_sources_response.py b/src/adcp/types/generated_poc/bundled/media_buy/sync_event_sources_response.py
new file mode 100644
index 000000000..e35741778
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/sync_event_sources_response.py
@@ -0,0 +1,348 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/sync_event_sources_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+
+class EventType(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ActionSource(Enum):
+    website = 'website'
+    app = 'app'
+    offline = 'offline'
+    phone_call = 'phone_call'
+    chat = 'chat'
+    email = 'email'
+    in_store = 'in_store'
+    system_generated = 'system_generated'
+    other = 'other'
+
+
+class ManagedBy(Enum):
+    buyer = 'buyer'
+    seller = 'seller'
+
+
+class SnippetType(Enum):
+    javascript = 'javascript'
+    html = 'html'
+    pixel_url = 'pixel_url'
+    server_only = 'server_only'
+
+
+class Setup(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    snippet: Annotated[
+        str | None,
+        Field(description='Code snippet to place on the site (JavaScript, HTML pixel, etc.)'),
+    ] = None
+    snippet_type: Annotated[
+        SnippetType | None,
+        Field(
+            description="Type of implementation. 'server_only' means no client-side tag is needed."
+        ),
+    ] = None
+    instructions: Annotated[
+        str | None, Field(description='Human/agent-readable setup instructions')
+    ] = None
+
+
+class Action(Enum):
+    created = 'created'
+    updated = 'updated'
+    unchanged = 'unchanged'
+    deleted = 'deleted'
+    failed = 'failed'
+
+
+class Status(Enum):
+    insufficient = 'insufficient'
+    minimum = 'minimum'
+    good = 'good'
+    excellent = 'excellent'
+
+
+class Detail(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    score: Annotated[
+        float,
+        Field(
+            description='Seller-defined quality score. Scale varies by seller — only compare within the same seller.',
+            ge=0.0,
+        ),
+    ]
+    max_score: Annotated[
+        float, Field(description="Maximum possible score on this seller's scale.", ge=1.0)
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Seller's name for this score (e.g., 'Event Quality Score', 'Event Match Quality')."
+        ),
+    ] = None
+
+
+class Severity(Enum):
+    error = 'error'
+    warning = 'warning'
+    info = 'info'
+
+
+class Issue(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    severity: Annotated[
+        Severity,
+        Field(
+            description="'error': blocks optimization until resolved. 'warning': optimization works but effectiveness is reduced. 'info': suggestion for improvement."
+        ),
+    ]
+    message: Annotated[
+        str,
+        Field(description='Human/agent-readable description of the issue and how to resolve it.'),
+    ]
+
+
+class Health(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    status: Annotated[
+        Status,
+        Field(
+            description='Overall health status. Use this for cross-seller decisions — do not rely on detail.score for comparability.',
+            title='Assessment Status',
+        ),
+    ]
+    detail: Annotated[
+        Detail | None,
+        Field(
+            description='Seller-specific scoring detail. Only present when the seller has a native quality score to relay. Buyer agents should use status (not detail) for cross-seller decisions. Detail is supplementary context for human review or advanced diagnostics.'
+        ),
+    ] = None
+    match_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of events from this source that the seller successfully matched to ad interactions (0.0-1.0). Low match rates indicate weak user_match identifiers. Absent when the seller does not compute match rates.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    last_event_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp of the most recent event received from this source. Absent when no events have been received.'
+        ),
+    ] = None
+    evaluated_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp of when this health assessment was computed. When health is derived from reporting data, this may lag real-time. Buyer agents can use this to decide whether to trust stale assessments or re-request.'
+        ),
+    ] = None
+    events_received_24h: Annotated[
+        int | None,
+        Field(
+            description='Number of events received from this source in the last 24 hours. Zero indicates the source is configured but not firing.',
+            ge=0,
+        ),
+    ] = None
+    issues: Annotated[
+        list[Issue] | None,
+        Field(
+            description='Actionable issues detected with this event source. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.'
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class EventSource(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_source_id: Annotated[str, Field(description='Event source ID from the request')]
+    name: Annotated[str | None, Field(description='Name of the event source')] = None
+    seller_id: Annotated[
+        str | None,
+        Field(
+            description="Seller-assigned identifier for this event source (the ID in the seller's ad platform)"
+        ),
+    ] = None
+    event_types: Annotated[
+        list[EventType] | None, Field(description='Event types this source handles')
+    ] = None
+    action_source: Annotated[
+        ActionSource | None,
+        Field(
+            description='Type of event source (website pixel, app SDK, in-store, etc.)',
+            title='Action Source',
+        ),
+    ] = None
+    managed_by: Annotated[
+        ManagedBy | None,
+        Field(
+            description="Who manages this event source. 'buyer' = configured via this sync. 'seller' = always-on, managed by the seller (e.g. Amazon sales attribution for Amazon advertisers)."
+        ),
+    ] = None
+    setup: Annotated[
+        Setup | None,
+        Field(
+            description='Implementation details for activating this event source (e.g. JavaScript tag, pixel URL)'
+        ),
+    ] = None
+    action: Annotated[Action, Field(description='Action taken for this event source')]
+    health: Annotated[
+        Health | None,
+        Field(
+            description='Health assessment for this event source. Reflects event volume, data quality, and parameter completeness. Sellers that support health scoring include this on every source (buyer-managed and seller-managed). Absent when the seller does not evaluate event source health.',
+            title='Event Source Health',
+        ),
+    ] = None
+    errors: Annotated[
+        list[Error] | None,
+        Field(description="Errors for this event source (only present when action='failed')"),
+    ] = None
+
+
+class SyncEventSourcesResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_sources: Annotated[
+        list[EventSource],
+        Field(
+            description='Results for each event source, including both synced and seller-managed sources on the account'
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Error36(Error):
+    pass
+
+
+class SyncEventSourcesResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error36],
+        Field(description='Operation-level errors that prevented processing', min_length=1),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+SyncEventSourcesResponse = SyncEventSourcesResponse3 | SyncEventSourcesResponse4
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/update_media_buy_request.py b/src/adcp/types/generated_poc/bundled/media_buy/update_media_buy_request.py
new file mode 100644
index 000000000..1a55b3186
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/update_media_buy_request.py
@@ -0,0 +1,8787 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/update_media_buy_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum, IntEnum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel, StringConstraints
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account44(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class Pacing(Enum):
+    even = 'even'
+    asap = 'asap'
+    front_loaded = 'front_loaded'
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Metric(Enum):
+    clicks = 'clicks'
+    views = 'views'
+    completed_views = 'completed_views'
+    viewed_seconds = 'viewed_seconds'
+    attention_seconds = 'attention_seconds'
+    attention_score = 'attention_score'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    reach = 'reach'
+
+
+class ReachUnit(AdCPBaseModel):
+    pass
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class Window(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class TargetFrequency(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ]
+    max: Annotated[
+        int | None,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ] = None
+    window: Annotated[
+        Window,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Window20(Window):
+    pass
+
+
+class TargetFrequency9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int | None,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ] = None
+    max: Annotated[
+        int,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ]
+    window: Annotated[
+        Window20,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Target(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[
+        float, Field(description='Target cost per metric unit in the buy currency', gt=0.0)
+    ]
+
+
+class Target21(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['threshold_rate']
+    value: Annotated[
+        float,
+        Field(
+            description='Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).',
+            gt=0.0,
+        ),
+    ]
+
+
+class OptimizationGoals(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['metric']
+    metric: Annotated[
+        Metric,
+        Field(
+            description="Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions — see view_duration_seconds), reach (unique audience reach — see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing — social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins — signals of intent to return), profile_visits (visits to the brand's in-platform page — profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+        ),
+    ]
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description="Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+        ),
+    ] = None
+    target_frequency: Annotated[
+        TargetFrequency | TargetFrequency9 | None,
+        Field(
+            description="Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed."
+        ),
+    ] = None
+    view_duration_seconds: Annotated[
+        float | None,
+        Field(
+            description="Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2–15 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values — silent rounding would create measurement discrepancies.",
+            gt=0.0,
+        ),
+    ] = None
+    target: Annotated[
+        Target | Target21 | None,
+        Field(
+            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class EventSource(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_source_id: Annotated[
+        str,
+        Field(
+            description='Event source to include (must be configured on this account via sync_event_sources)',
+            min_length=1,
+        ),
+    ]
+    event_type: Annotated[
+        ConversionEvent,
+        Field(
+            description='Event type to include from this source (e.g., purchase, lead, app_install, refund)',
+            title='Event Type',
+        ),
+    ]
+    custom_event_name: Annotated[
+        str | None,
+        Field(
+            description="Required when event_type is 'custom'. Platform-specific name for the custom event."
+        ),
+    ] = None
+    value_field: Annotated[
+        str | None,
+        Field(
+            description="Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' — sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs — the seller maps it to their platform's value ingestion mechanism."
+        ),
+    ] = None
+    value_factor: Annotated[
+        float | None,
+        Field(
+            description="Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs — the seller applies it when computing aggregated value metrics."
+        ),
+    ] = 1
+
+
+class Target22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[float, Field(description='Target cost per event in the buy currency', gt=0.0)]
+
+
+class Target23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['per_ad_spend']
+    value: Annotated[
+        float,
+        Field(description='Target return ratio (e.g., 4.0 means $4 of value per $1 spent)', gt=0.0),
+    ]
+
+
+class Target24(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['maximize_value']
+
+
+class PostClick(Window):
+    pass
+
+
+class PostView(Window):
+    pass
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick,
+        Field(
+            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
+        ),
+    ]
+    post_view: Annotated[
+        PostView | None,
+        Field(
+            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
+        ),
+    ] = None
+
+
+class OptimizationGoals7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['event']
+    event_sources: Annotated[
+        list[EventSource],
+        Field(
+            description='Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries — the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.',
+            min_length=1,
+        ),
+    ]
+    target: Annotated[
+        Target22 | Target23 | Target24 | None,
+        Field(
+            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget — regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.'
+        ),
+    ] = None
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class GeoCountry(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class GeoCountriesExcludeItem(GeoCountry):
+    pass
+
+
+class GeoRegion(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+
+
+class GeoRegionsExcludeItem(GeoRegion):
+    pass
+
+
+class System(Enum):
+    nielsen_dma = 'nielsen_dma'
+    uk_itl1 = 'uk_itl1'
+    uk_itl2 = 'uk_itl2'
+    eurostat_nuts2 = 'eurostat_nuts2'
+    custom = 'custom'
+
+
+class GeoMetro(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoMetrosExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class System19(Enum):
+    us_zip = 'us_zip'
+    us_zip_plus_four = 'us_zip_plus_four'
+    gb_outward = 'gb_outward'
+    gb_full = 'gb_full'
+    ca_fsa = 'ca_fsa'
+    ca_full = 'ca_full'
+    de_plz = 'de_plz'
+    fr_code_postal = 'fr_code_postal'
+    au_postcode = 'au_postcode'
+    ch_plz = 'ch_plz'
+    at_plz = 'at_plz'
+
+
+class GeoPostalArea(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System19,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoPostalAreasExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System19,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class Day(Enum):
+    monday = 'monday'
+    tuesday = 'tuesday'
+    wednesday = 'wednesday'
+    thursday = 'thursday'
+    friday = 'friday'
+    saturday = 'saturday'
+    sunday = 'sunday'
+
+
+class DaypartTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    days: Annotated[
+        list[Day],
+        Field(
+            description='Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).',
+            min_length=1,
+        ),
+    ]
+    start_hour: Annotated[
+        int,
+        Field(
+            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
+            ge=0,
+            le=23,
+        ),
+    ]
+    end_hour: Annotated[
+        int,
+        Field(
+            description='End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.',
+            ge=1,
+            le=24,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+        ),
+    ] = None
+
+
+class Suppress(Window):
+    pass
+
+
+class Per(ReachUnit):
+    pass
+
+
+class Window21(Window):
+    pass
+
+
+class FrequencyCap(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ]
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window21 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress13(Window):
+    pass
+
+
+class Window22(Window):
+    pass
+
+
+class FrequencyCap13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress13 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ]
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window22 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress14(Window):
+    pass
+
+
+class Window23(Window):
+    pass
+
+
+class FrequencyCap14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress14 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ]
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window23 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class PropertyList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the property list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the property list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the collection list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the collection list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionListExclude(CollectionList):
+    pass
+
+
+class AcceptedMethod(Enum):
+    facial_age_estimation = 'facial_age_estimation'
+    id_document = 'id_document'
+    digital_id = 'digital_id'
+    credit_card = 'credit_card'
+    world_id = 'world_id'
+
+
+class AgeRestriction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[int, Field(description='Minimum age required', ge=13, le=99)]
+    verification_required: Annotated[
+        bool | None,
+        Field(description='Whether verified age (not inferred) is required for compliance'),
+    ] = False
+    accepted_methods: Annotated[
+        list[AcceptedMethod] | None,
+        Field(
+            description='Accepted verification methods. If omitted, any method the platform supports is acceptable.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class DevicePlatformEnum(Enum):
+    ios = 'ios'
+    android = 'android'
+    windows = 'windows'
+    macos = 'macos'
+    linux = 'linux'
+    chromeos = 'chromeos'
+    tvos = 'tvos'
+    tizen = 'tizen'
+    webos = 'webos'
+    fire_os = 'fire_os'
+    roku_os = 'roku_os'
+    unknown = 'unknown'
+
+
+class DeviceTypeEnum(Enum):
+    desktop = 'desktop'
+    mobile = 'mobile'
+    tablet = 'tablet'
+    ctv = 'ctv'
+    dooh = 'dooh'
+    unknown = 'unknown'
+
+
+class StoreCatchment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str, Field(description='Synced store-type catalog ID from sync_catalogs.')
+    ]
+    store_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific stores within the catalog. Omit to target all stores.',
+            min_length=1,
+        ),
+    ] = None
+    catchment_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Unit100(Enum):
+    min = 'min'
+    hr = 'hr'
+
+
+class TravelTime(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
+    unit: Annotated[Unit100, Field(description='Time unit.')]
+
+
+class TransportMode(Enum):
+    walking = 'walking'
+    cycling = 'cycling'
+    driving = 'driving'
+    public_transport = 'public_transport'
+
+
+class Unit101(Enum):
+    km = 'km'
+    mi = 'mi'
+    m = 'm'
+
+
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    unit: Annotated[Unit101, Field(description='Distance unit.', title='Distance Unit')]
+
+
+class Type95(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
+
+
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type95, Field(description='GeoJSON geometry type.')]
+    coordinates: Annotated[
+        list[Any],
+        Field(
+            description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
+        ),
+    ]
+
+
+class GeoProximity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ]
+    transport_mode: Annotated[
+        TransportMode,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ]
+    radius: Annotated[
+        Radius | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime20(TravelTime):
+    pass
+
+
+class Radius20(Radius):
+    pass
+
+
+class Geometry20(Geometry):
+    pass
+
+
+class GeoProximity21(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime20 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius20,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ]
+    geometry: Annotated[
+        Geometry20 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime21(TravelTime):
+    pass
+
+
+class Radius21(Radius):
+    pass
+
+
+class Geometry21(Geometry):
+    pass
+
+
+class GeoProximity22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float | None,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ] = None
+    lng: Annotated[
+        float | None,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime21 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius21 | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry21,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class LanguageItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z]{2}$')]
+
+
+class MatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class KeywordTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[
+        MatchType,
+        Field(
+            description='Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly'
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class NegativeKeyword(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to exclude', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type for exclusion')]
+
+
+class TargetingOverlay(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo_countries: Annotated[
+        list[GeoCountry] | None,
+        Field(
+            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_countries_exclude: Annotated[
+        list[GeoCountriesExcludeItem] | None,
+        Field(
+            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions: Annotated[
+        list[GeoRegion] | None,
+        Field(
+            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions_exclude: Annotated[
+        list[GeoRegionsExcludeItem] | None,
+        Field(
+            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_metros: Annotated[
+        list[GeoMetro] | None,
+        Field(
+            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_metros_exclude: Annotated[
+        list[GeoMetrosExcludeItem] | None,
+        Field(
+            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas: Annotated[
+        list[GeoPostalArea] | None,
+        Field(
+            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas_exclude: Annotated[
+        list[GeoPostalAreasExcludeItem] | None,
+        Field(
+            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    daypart_targets: Annotated[
+        list[DaypartTarget] | None,
+        Field(
+            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
+            min_length=1,
+        ),
+    ] = None
+    axe_include_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
+        ),
+    ] = None
+    axe_exclude_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
+        ),
+    ] = None
+    audience_include: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    audience_exclude: Annotated[
+        list[str] | None,
+        Field(
+            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    frequency_cap: Annotated[
+        FrequencyCap | FrequencyCap13 | FrequencyCap14 | None,
+        Field(
+            description='Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.',
+            title='Frequency Cap',
+        ),
+    ] = None
+    property_list: Annotated[
+        PropertyList | None,
+        Field(
+            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+            title='Property List Reference',
+        ),
+    ] = None
+    collection_list: Annotated[
+        CollectionList | None,
+        Field(
+            description='Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.',
+            title='Collection List Reference',
+        ),
+    ] = None
+    collection_list_exclude: Annotated[
+        CollectionListExclude | None,
+        Field(
+            description="Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+            title='Collection List Reference',
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(
+            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        list[DevicePlatformEnum] | None,
+        Field(
+            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
+            min_length=1,
+        ),
+    ] = None
+    device_type: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    device_type_exclude: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    store_catchments: Annotated[
+        list[StoreCatchment] | None,
+        Field(
+            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
+            min_length=1,
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity21 | GeoProximity22] | None,
+        Field(
+            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    language: Annotated[
+        list[LanguageItem] | None,
+        Field(
+            description="Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+            min_length=1,
+        ),
+    ] = None
+    keyword_targets: Annotated[
+        list[KeywordTarget] | None,
+        Field(
+            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords: Annotated[
+        list[NegativeKeyword] | None,
+        Field(
+            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class KeywordTargetsAddItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type for this keyword')]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Per-keyword bid price. Inherits currency and max_bid interpretation from the package's pricing option.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class KeywordTargetsRemoveItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to stop targeting', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type to remove')]
+
+
+class NegativeKeywordsAddItem(NegativeKeyword):
+    pass
+
+
+class NegativeKeywordsRemoveItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to stop excluding', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type to remove')]
+
+
+class CreativeAssignment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Relative delivery weight for this creative (0–100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally — a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class DigitalSourceType(Enum):
+    digital_capture = 'digital_capture'
+    digital_creation = 'digital_creation'
+    trained_algorithmic_media = 'trained_algorithmic_media'
+    composite_with_trained_algorithmic_media = 'composite_with_trained_algorithmic_media'
+    algorithmic_media = 'algorithmic_media'
+    composite_capture = 'composite_capture'
+    composite_synthetic = 'composite_synthetic'
+    human_edits = 'human_edits'
+    data_driven_media = 'data_driven_media'
+
+
+class AiTool(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[
+        str,
+        Field(
+            description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
+        ),
+    ]
+    version: Annotated[
+        str | None,
+        Field(
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+        ),
+    ] = None
+    provider: Annotated[
+        str | None,
+        Field(
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+        ),
+    ] = None
+
+
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
+
+
+class Role(Enum):
+    creator = 'creator'
+    advertiser = 'advertiser'
+    agency = 'agency'
+    platform = 'platform'
+    tool = 'tool'
+
+
+class DeclaredBy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL of the agent or service that declared this provenance'),
+    ] = None
+    role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
+
+
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
+class Persistence(Enum):
+    continuous = 'continuous'
+    initial = 'initial'
+    flexible = 'flexible'
+
+
+class Position(Enum):
+    prominent = 'prominent'
+    footer = 'footer'
+    audio = 'audio'
+    subtitle = 'subtitle'
+    overlay = 'overlay'
+    end_card = 'end_card'
+    pre_roll = 'pre_roll'
+    companion = 'companion'
+
+
+class RenderGuidance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description="Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial — without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
+            ge=1,
+        ),
+    ] = None
+    positions: Annotated[
+        list[Position] | None,
+        Field(
+            description='Preferred disclosure positions in priority order. The first position a format supports should be used.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Jurisdiction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class Result(Enum):
+    authentic = 'authentic'
+    ai_generated = 'ai_generated'
+    ai_modified = 'ai_modified'
+    inconclusive = 'inconclusive'
+
+
+class VerificationItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    verified_by: Annotated[
+        str,
+        Field(
+            description="Name of the verification service (e.g., 'DoubleVerify', 'Hive Moderation', 'Reality Defender')"
+        ),
+    ]
+    verified_time: Annotated[
+        AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
+    ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
+
+
+class Provenance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class ColorSpace(Enum):
+    rec709 = 'rec709'
+    rec2020 = 'rec2020'
+    rec2100 = 'rec2100'
+    srgb = 'srgb'
+    dci_p3 = 'dci_p3'
+
+
+class HdrFormat(Enum):
+    sdr = 'sdr'
+    hdr10 = 'hdr10'
+    hdr10_plus = 'hdr10_plus'
+    hlg = 'hlg'
+    dolby_vision = 'dolby_vision'
+
+
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
+class DeclaredBy219(DeclaredBy):
+    pass
+
+
+class RenderGuidance219(RenderGuidance):
+    pass
+
+
+class Jurisdiction232(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance219 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure220(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction232] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem219(VerificationItem):
+    pass
+
+
+class Provenance219(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy219 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure220 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem219] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets318(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance219 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy220(DeclaredBy):
+    pass
+
+
+class RenderGuidance220(RenderGuidance):
+    pass
+
+
+class Jurisdiction233(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance220 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure221(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction233] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem220(VerificationItem):
+    pass
+
+
+class Provenance220(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy220 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure221 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem220] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets319(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance220 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class VastVersion(Enum):
+    field_2_0 = '2.0'
+    field_3_0 = '3.0'
+    field_4_0 = '4.0'
+    field_4_1 = '4.1'
+    field_4_2 = '4.2'
+
+
+class TrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    rewind = 'rewind'
+    skip = 'skip'
+    playerExpand = 'playerExpand'
+    playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy221(DeclaredBy):
+    pass
+
+
+class RenderGuidance221(RenderGuidance):
+    pass
+
+
+class Jurisdiction234(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance221 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure222(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction234] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem221(VerificationItem):
+    pass
+
+
+class Provenance221(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy221 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure222 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem221] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets320(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance221 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy222(DeclaredBy):
+    pass
+
+
+class RenderGuidance222(RenderGuidance):
+    pass
+
+
+class Jurisdiction235(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance222 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure223(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction235] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem222(VerificationItem):
+    pass
+
+
+class Provenance222(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy222 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure223 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem222] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets321(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance222 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy223(DeclaredBy):
+    pass
+
+
+class RenderGuidance223(RenderGuidance):
+    pass
+
+
+class Jurisdiction236(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance223 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure224(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction236] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem223(VerificationItem):
+    pass
+
+
+class Provenance223(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy223 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure224 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem223] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets322(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance223 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class UrlType(Enum):
+    clickthrough = 'clickthrough'
+    tracker_pixel = 'tracker_pixel'
+    tracker_script = 'tracker_script'
+
+
+class DeclaredBy224(DeclaredBy):
+    pass
+
+
+class RenderGuidance224(RenderGuidance):
+    pass
+
+
+class Jurisdiction237(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance224 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure225(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction237] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem224(VerificationItem):
+    pass
+
+
+class Provenance224(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy224 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure225 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem224] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets323(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance224 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Accessibility(AdCPBaseModel):
+    alt_text: Annotated[
+        str | None, Field(description='Text alternative describing the creative content')
+    ] = None
+    keyboard_navigable: Annotated[
+        bool | None, Field(description='Whether the creative can be fully operated via keyboard')
+    ] = None
+    motion_control: Annotated[
+        bool | None,
+        Field(
+            description='Whether the creative respects prefers-reduced-motion or provides pause/stop controls'
+        ),
+    ] = None
+    screen_reader_tested: Annotated[
+        bool | None, Field(description='Whether the creative has been tested with screen readers')
+    ] = None
+
+
+class DeclaredBy225(DeclaredBy):
+    pass
+
+
+class RenderGuidance225(RenderGuidance):
+    pass
+
+
+class Jurisdiction238(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance225 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure226(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction238] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem225(VerificationItem):
+    pass
+
+
+class Provenance225(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy225 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure226 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem225] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets324(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance225 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class ModuleType(Enum):
+    esm = 'esm'
+    commonjs = 'commonjs'
+    script = 'script'
+
+
+class DeclaredBy226(DeclaredBy):
+    pass
+
+
+class RenderGuidance226(RenderGuidance):
+    pass
+
+
+class Jurisdiction239(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance226 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure227(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction239] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem226(VerificationItem):
+    pass
+
+
+class Provenance226(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy226 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure227 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem226] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets325(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance226 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Method(Enum):
+    GET = 'GET'
+    POST = 'POST'
+
+
+class SupportedMacros(Enum):
+    MEDIA_BUY_ID = 'MEDIA_BUY_ID'
+    PACKAGE_ID = 'PACKAGE_ID'
+    CREATIVE_ID = 'CREATIVE_ID'
+    CACHEBUSTER = 'CACHEBUSTER'
+    TIMESTAMP = 'TIMESTAMP'
+    CLICK_URL = 'CLICK_URL'
+    GDPR = 'GDPR'
+    GDPR_CONSENT = 'GDPR_CONSENT'
+    US_PRIVACY = 'US_PRIVACY'
+    GPP_STRING = 'GPP_STRING'
+    GPP_SID = 'GPP_SID'
+    IP_ADDRESS = 'IP_ADDRESS'
+    LIMIT_AD_TRACKING = 'LIMIT_AD_TRACKING'
+    DEVICE_TYPE = 'DEVICE_TYPE'
+    OS = 'OS'
+    OS_VERSION = 'OS_VERSION'
+    DEVICE_MAKE = 'DEVICE_MAKE'
+    DEVICE_MODEL = 'DEVICE_MODEL'
+    USER_AGENT = 'USER_AGENT'
+    APP_BUNDLE = 'APP_BUNDLE'
+    APP_NAME = 'APP_NAME'
+    COUNTRY = 'COUNTRY'
+    REGION = 'REGION'
+    CITY = 'CITY'
+    ZIP = 'ZIP'
+    DMA = 'DMA'
+    LAT = 'LAT'
+    LONG = 'LONG'
+    DEVICE_ID = 'DEVICE_ID'
+    DEVICE_ID_TYPE = 'DEVICE_ID_TYPE'
+    DOMAIN = 'DOMAIN'
+    PAGE_URL = 'PAGE_URL'
+    REFERRER = 'REFERRER'
+    KEYWORDS = 'KEYWORDS'
+    PLACEMENT_ID = 'PLACEMENT_ID'
+    FOLD_POSITION = 'FOLD_POSITION'
+    AD_WIDTH = 'AD_WIDTH'
+    AD_HEIGHT = 'AD_HEIGHT'
+    VIDEO_ID = 'VIDEO_ID'
+    VIDEO_TITLE = 'VIDEO_TITLE'
+    VIDEO_DURATION = 'VIDEO_DURATION'
+    VIDEO_CATEGORY = 'VIDEO_CATEGORY'
+    CONTENT_GENRE = 'CONTENT_GENRE'
+    CONTENT_RATING = 'CONTENT_RATING'
+    PLAYER_WIDTH = 'PLAYER_WIDTH'
+    PLAYER_HEIGHT = 'PLAYER_HEIGHT'
+    POD_POSITION = 'POD_POSITION'
+    POD_SIZE = 'POD_SIZE'
+    AD_BREAK_ID = 'AD_BREAK_ID'
+    STATION_ID = 'STATION_ID'
+    COLLECTION_NAME = 'COLLECTION_NAME'
+    INSTALLMENT_ID = 'INSTALLMENT_ID'
+    AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
+    AXEM = 'AXEM'
+    CATALOG_ID = 'CATALOG_ID'
+    SKU = 'SKU'
+    GTIN = 'GTIN'
+    OFFERING_ID = 'OFFERING_ID'
+    JOB_ID = 'JOB_ID'
+    HOTEL_ID = 'HOTEL_ID'
+    FLIGHT_ID = 'FLIGHT_ID'
+    VEHICLE_ID = 'VEHICLE_ID'
+    LISTING_ID = 'LISTING_ID'
+    STORE_ID = 'STORE_ID'
+    PROGRAM_ID = 'PROGRAM_ID'
+    DESTINATION_ID = 'DESTINATION_ID'
+    CREATIVE_VARIANT_ID = 'CREATIVE_VARIANT_ID'
+    APP_ITEM_ID = 'APP_ITEM_ID'
+
+
+class ResponseType(Enum):
+    html = 'html'
+    json = 'json'
+    xml = 'xml'
+    javascript = 'javascript'
+
+
+class Method34(Enum):
+    hmac_sha256 = 'hmac_sha256'
+    api_key = 'api_key'
+    none = 'none'
+
+
+class Security(AdCPBaseModel):
+    method: Annotated[
+        Method34, Field(description='Authentication method', title='Webhook Security Method')
+    ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
+
+
+class DeclaredBy227(DeclaredBy):
+    pass
+
+
+class RenderGuidance227(RenderGuidance):
+    pass
+
+
+class Jurisdiction240(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance227 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure228(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction240] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem227(VerificationItem):
+    pass
+
+
+class Provenance227(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy227 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure228 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem227] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets326(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance227 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy228(DeclaredBy):
+    pass
+
+
+class RenderGuidance228(RenderGuidance):
+    pass
+
+
+class Jurisdiction241(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance228 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure229(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction241] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem228(VerificationItem):
+    pass
+
+
+class Provenance228(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy228 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure229 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem228] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets327(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance228 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DaastVersion(Enum):
+    field_1_0 = '1.0'
+    field_1_1 = '1.1'
+
+
+class TrackingEvent50(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
+    start = 'start'
+    firstQuartile = 'firstQuartile'
+    midpoint = 'midpoint'
+    thirdQuartile = 'thirdQuartile'
+    complete = 'complete'
+    mute = 'mute'
+    unmute = 'unmute'
+    pause = 'pause'
+    resume = 'resume'
+    skip = 'skip'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
+
+
+class DeclaredBy229(DeclaredBy):
+    pass
+
+
+class RenderGuidance229(RenderGuidance):
+    pass
+
+
+class Jurisdiction242(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance229 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure230(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction242] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem229(VerificationItem):
+    pass
+
+
+class Provenance229(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy229 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure230 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem229] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets328(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent50] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance229 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy230(DeclaredBy):
+    pass
+
+
+class RenderGuidance230(RenderGuidance):
+    pass
+
+
+class Jurisdiction243(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance230 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure231(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction243] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem230(VerificationItem):
+    pass
+
+
+class Provenance230(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy230 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure231 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem230] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets329(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent50] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance230 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class MarkdownFlavor(Enum):
+    commonmark = 'commonmark'
+    gfm = 'gfm'
+
+
+class Assets330(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[
+        str,
+        Field(
+            description='Markdown content following CommonMark spec with optional GitHub Flavored Markdown extensions'
+        ),
+    ]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    markdown_flavor: Annotated[
+        MarkdownFlavor | None,
+        Field(
+            description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.',
+            title='Markdown Flavor',
+        ),
+    ] = MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
+
+
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
+
+
+class Messaging(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
+    key_messages: Annotated[
+        list[str] | None, Field(description='Key messages to communicate in priority order')
+    ] = None
+
+
+class Role270(Enum):
+    style_reference = 'style_reference'
+    product_shot = 'product_shot'
+    mood_board = 'mood_board'
+    example_creative = 'example_creative'
+    logo = 'logo'
+    strategy_doc = 'strategy_doc'
+    storyboard = 'storyboard'
+
+
+class ReferenceAsset(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
+    role: Annotated[
+        Role270,
+        Field(
+            description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
+
+
+class Jurisdiction244(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+
+
+class RequiredDisclosure(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction244] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets331(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class FeedFieldMapping18(FeedFieldMapping):
+    pass
+
+
+class Assets332(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping18] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Input(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    name: Annotated[str, Field(description='Human-readable name for this preview variant')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to apply for this preview')
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(description='Natural language description of the context for AI-generated content'),
+    ] = None
+
+
+class Status(Enum):
+    processing = 'processing'
+    pending_review = 'pending_review'
+    approved = 'approved'
+    rejected = 'rejected'
+    archived = 'archived'
+
+
+class Type99(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type99,
+        Field(
+            description='Industry-standard identifier types for advertising creatives. These identifiers are managed by external registries and used across the supply chain to track and reference specific creative assets.',
+            examples=['ad_id', 'isci', 'clearcast_clock'],
+            title='Creative Identifier Type',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
+
+
+class DeclaredBy231(DeclaredBy):
+    pass
+
+
+class RenderGuidance231(RenderGuidance):
+    pass
+
+
+class Jurisdiction245(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance231 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure232(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction245] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem231(VerificationItem):
+    pass
+
+
+class Provenance231(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy231 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure232 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem231] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.',
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets
+            | Assets318
+            | Assets319
+            | Assets320
+            | Assets321
+            | Assets322
+            | Assets323
+            | Assets324
+            | Assets325
+            | Assets326
+            | Assets327
+            | Assets328
+            | Assets329
+            | Assets330
+            | Assets331
+            | Assets332,
+        ],
+        Field(description='Assets required by the format, keyed by asset_id'),
+    ]
+    inputs: Annotated[
+        list[Input] | None,
+        Field(
+            description='Preview contexts for generative formats - defines what scenarios to generate previews for'
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
+    ] = None
+    status: Annotated[
+        Status | None,
+        Field(
+            description="For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+            title='Creative Status',
+        ),
+    ] = None
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            min_length=1,
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance231 | None,
+        Field(
+            description='Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Package(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    package_id: Annotated[str, Field(description="Seller's ID of package to update")]
+    budget: Annotated[
+        float | None,
+        Field(
+            description='Updated budget allocation for this package in the currency specified by the pricing option',
+            ge=0.0,
+        ),
+    ] = None
+    pacing: Annotated[
+        Pacing | None, Field(description='Budget pacing strategy', title='Pacing')
+    ] = None
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Updated bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            ge=0.0,
+        ),
+    ] = None
+    impressions: Annotated[
+        float | None, Field(description='Updated impression goal for this package', ge=0.0)
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Updated flight start date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Updated flight end date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(description='Pause/resume specific package (true = paused, false = active)'),
+    ] = None
+    canceled: Annotated[
+        Literal[True],
+        Field(
+            description='Cancel this specific package. Cancellation is irreversible — canceled packages stop delivery and cannot be reactivated. Sellers MAY reject with NOT_CANCELLABLE.'
+        ),
+    ] = True
+    cancellation_reason: Annotated[
+        str | None, Field(description='Reason for canceling this package.', max_length=500)
+    ] = None
+    catalogs: Annotated[
+        list[Catalog] | None,
+        Field(
+            description='Replace the catalogs this package promotes. Uses replacement semantics — the provided array replaces the current list. Omit to leave catalogs unchanged.',
+            min_length=1,
+        ),
+    ] = None
+    optimization_goals: Annotated[
+        list[OptimizationGoals | OptimizationGoals7] | None,
+        Field(
+            description='Replace all optimization goals for this package. Uses replacement semantics — omit to leave goals unchanged.',
+            min_length=1,
+        ),
+    ] = None
+    targeting_overlay: Annotated[
+        TargetingOverlay | None,
+        Field(
+            description='Targeting overlay to apply to this package. Uses replacement semantics — the full overlay replaces the previous one. Omit to leave targeting unchanged. For keyword and negative keyword updates, prefer the incremental operations (keyword_targets_add, keyword_targets_remove, negative_keywords_add, negative_keywords_remove) which avoid replacing the full overlay. Sellers SHOULD return a validation error if targeting_overlay.keyword_targets is present in the same request as keyword_targets_add or keyword_targets_remove, and likewise for negative_keywords.',
+            title='Targeting Overlay',
+        ),
+    ] = None
+    keyword_targets_add: Annotated[
+        list[KeywordTargetsAddItem] | None,
+        Field(
+            description='Keyword targets to add or update on this package. Upserts by (keyword, match_type) identity: if the pair already exists, its bid_price is updated; if not, a new keyword target is added. Use targeting_overlay.keyword_targets in create_media_buy to set the initial list.',
+            min_length=1,
+        ),
+    ] = None
+    keyword_targets_remove: Annotated[
+        list[KeywordTargetsRemoveItem] | None,
+        Field(
+            description='Keyword targets to remove from this package. Removes matching (keyword, match_type) pairs. If a specified pair is not present, sellers SHOULD treat it as a no-op for that entry.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords_add: Annotated[
+        list[NegativeKeywordsAddItem] | None,
+        Field(
+            description='Negative keywords to add to this package. Appends to the existing negative keyword list — does not replace it. If a keyword+match_type pair already exists, sellers SHOULD treat it as a no-op for that entry. Use targeting_overlay.negative_keywords in create_media_buy to set the initial list.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords_remove: Annotated[
+        list[NegativeKeywordsRemoveItem] | None,
+        Field(
+            description='Negative keywords to remove from this package. Removes matching keyword+match_type pairs from the existing list. If a specified pair is not present, sellers SHOULD treat it as a no-op for that entry.',
+            min_length=1,
+        ),
+    ] = None
+    creative_assignments: Annotated[
+        list[CreativeAssignment] | None,
+        Field(
+            description='Replace creative assignments for this package with optional weights and placement targeting. Uses replacement semantics - omit to leave assignments unchanged.'
+        ),
+    ] = None
+    creatives: Annotated[
+        list[Creative] | None,
+        Field(
+            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
+            max_length=100,
+            min_length=1,
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
+    ]
+    city: Annotated[str, Field(max_length=100)]
+    postal_code: Annotated[str, Field(max_length=20)]
+    region: Annotated[
+        str | None, Field(description='State, province, or region', max_length=100)
+    ] = None
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    ]
+
+
+class Role272(Enum):
+    billing = 'billing'
+    legal = 'legal'
+    creative = 'creative'
+    general = 'general'
+
+
+class Contact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    role: Annotated[
+        Role272, Field(description="Contact's functional role in the business relationship")
+    ]
+    name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
+        None
+    )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    phone: Annotated[str | None, Field(max_length=30)] = None
+
+
+class Bank(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
+    ] = None
+    bic: Annotated[
+        str | None,
+        Field(
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+        ),
+    ] = None
+    routing_number: Annotated[
+        str | None,
+        Field(
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
+        ),
+    ] = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class InvoiceRecipient(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class FeedFieldMapping19(FeedFieldMapping):
+    pass
+
+
+class Catalog9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping19] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Window24(Window):
+    pass
+
+
+class TargetFrequency10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ]
+    max: Annotated[
+        int | None,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ] = None
+    window: Annotated[
+        Window24,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Window25(Window):
+    pass
+
+
+class TargetFrequency11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int | None,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ] = None
+    max: Annotated[
+        int,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ]
+    window: Annotated[
+        Window25,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Target25(Target):
+    pass
+
+
+class Target26(Target21):
+    pass
+
+
+class OptimizationGoals8(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['metric']
+    metric: Annotated[
+        Metric,
+        Field(
+            description="Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions — see view_duration_seconds), reach (unique audience reach — see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing — social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins — signals of intent to return), profile_visits (visits to the brand's in-platform page — profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+        ),
+    ]
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description="Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+        ),
+    ] = None
+    target_frequency: Annotated[
+        TargetFrequency10 | TargetFrequency11 | None,
+        Field(
+            description="Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed."
+        ),
+    ] = None
+    view_duration_seconds: Annotated[
+        float | None,
+        Field(
+            description="Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2–15 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values — silent rounding would create measurement discrepancies.",
+            gt=0.0,
+        ),
+    ] = None
+    target: Annotated[
+        Target25 | Target26 | None,
+        Field(
+            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class EventSource9(EventSource):
+    pass
+
+
+class Target27(Target22):
+    pass
+
+
+class Target28(Target23):
+    pass
+
+
+class Target29(Target24):
+    pass
+
+
+class PostClick6(Window):
+    pass
+
+
+class PostView6(Window):
+    pass
+
+
+class AttributionWindow11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick6,
+        Field(
+            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
+        ),
+    ]
+    post_view: Annotated[
+        PostView6 | None,
+        Field(
+            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
+        ),
+    ] = None
+
+
+class OptimizationGoals9(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['event']
+    event_sources: Annotated[
+        list[EventSource9],
+        Field(
+            description='Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries — the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.',
+            min_length=1,
+        ),
+    ]
+    target: Annotated[
+        Target27 | Target28 | Target29 | None,
+        Field(
+            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget — regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.'
+        ),
+    ] = None
+    attribution_window: Annotated[
+        AttributionWindow11 | None,
+        Field(
+            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class GeoMetro5(GeoMetro):
+    pass
+
+
+class GeoMetrosExcludeItem5(GeoMetrosExcludeItem):
+    pass
+
+
+class GeoPostalArea5(GeoPostalArea):
+    pass
+
+
+class GeoPostalAreasExcludeItem5(GeoPostalAreasExcludeItem):
+    pass
+
+
+class DaypartTarget5(DaypartTarget):
+    pass
+
+
+class Suppress15(Window):
+    pass
+
+
+class Window26(Window):
+    pass
+
+
+class FrequencyCap15(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress15,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ]
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window26 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress16(Window):
+    pass
+
+
+class Window27(Window):
+    pass
+
+
+class FrequencyCap16(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress16 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ]
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window27 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress17(Window):
+    pass
+
+
+class Window28(Window):
+    pass
+
+
+class FrequencyCap17(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress17 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ]
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window28 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class AgeRestriction7(AgeRestriction):
+    pass
+
+
+class TravelTime22(TravelTime):
+    pass
+
+
+class Radius22(Radius):
+    pass
+
+
+class Geometry22(Geometry):
+    pass
+
+
+class GeoProximity23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime22,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ]
+    transport_mode: Annotated[
+        TransportMode,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ]
+    radius: Annotated[
+        Radius22 | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry22 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime23(TravelTime):
+    pass
+
+
+class Radius23(Radius):
+    pass
+
+
+class Geometry23(Geometry):
+    pass
+
+
+class GeoProximity24(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime23 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius23,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ]
+    geometry: Annotated[
+        Geometry23 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime24(TravelTime):
+    pass
+
+
+class Radius24(Radius):
+    pass
+
+
+class Geometry24(Geometry):
+    pass
+
+
+class GeoProximity25(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float | None,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ] = None
+    lng: Annotated[
+        float | None,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime24 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius24 | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry24,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class KeywordTarget5(KeywordTarget):
+    pass
+
+
+class NegativeKeyword5(NegativeKeyword):
+    pass
+
+
+class TargetingOverlay4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo_countries: Annotated[
+        list[GeoCountry] | None,
+        Field(
+            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_countries_exclude: Annotated[
+        list[GeoCountriesExcludeItem] | None,
+        Field(
+            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions: Annotated[
+        list[GeoRegion] | None,
+        Field(
+            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions_exclude: Annotated[
+        list[GeoRegionsExcludeItem] | None,
+        Field(
+            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_metros: Annotated[
+        list[GeoMetro5] | None,
+        Field(
+            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_metros_exclude: Annotated[
+        list[GeoMetrosExcludeItem5] | None,
+        Field(
+            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas: Annotated[
+        list[GeoPostalArea5] | None,
+        Field(
+            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas_exclude: Annotated[
+        list[GeoPostalAreasExcludeItem5] | None,
+        Field(
+            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    daypart_targets: Annotated[
+        list[DaypartTarget5] | None,
+        Field(
+            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
+            min_length=1,
+        ),
+    ] = None
+    axe_include_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
+        ),
+    ] = None
+    axe_exclude_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
+        ),
+    ] = None
+    audience_include: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    audience_exclude: Annotated[
+        list[str] | None,
+        Field(
+            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    frequency_cap: Annotated[
+        FrequencyCap15 | FrequencyCap16 | FrequencyCap17 | None,
+        Field(
+            description='Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.',
+            title='Frequency Cap',
+        ),
+    ] = None
+    property_list: Annotated[
+        PropertyList | None,
+        Field(
+            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+            title='Property List Reference',
+        ),
+    ] = None
+    collection_list: Annotated[
+        CollectionList | None,
+        Field(
+            description='Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.',
+            title='Collection List Reference',
+        ),
+    ] = None
+    collection_list_exclude: Annotated[
+        CollectionListExclude | None,
+        Field(
+            description="Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+            title='Collection List Reference',
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction7 | None,
+        Field(
+            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        list[DevicePlatformEnum] | None,
+        Field(
+            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
+            min_length=1,
+        ),
+    ] = None
+    device_type: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    device_type_exclude: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    store_catchments: Annotated[
+        list[StoreCatchment] | None,
+        Field(
+            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
+            min_length=1,
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        list[GeoProximity23 | GeoProximity24 | GeoProximity25] | None,
+        Field(
+            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    language: Annotated[
+        list[LanguageItem] | None,
+        Field(
+            description="Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+            min_length=1,
+        ),
+    ] = None
+    keyword_targets: Annotated[
+        list[KeywordTarget5] | None,
+        Field(
+            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords: Annotated[
+        list[NegativeKeyword5] | None,
+        Field(
+            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Vendor(Brand):
+    pass
+
+
+class BillingMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    max_variance_percent: Annotated[
+        float | None,
+        Field(
+            description="Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review).",
+            ge=0.0,
+            lt=100.0,
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=[
+                'live',
+                'c3',
+                'c7',
+                'tentative',
+                'final',
+                'post_ivt',
+                'post_sivt',
+                'downloads_30d',
+            ],
+        ),
+    ] = None
+
+
+class AvailableRemedy(Enum):
+    additional_delivery = 'additional_delivery'
+    credit = 'credit'
+    invoice_adjustment = 'invoice_adjustment'
+
+
+class MakegoodPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_remedies: Annotated[
+        list[AvailableRemedy],
+        Field(
+            description='Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.',
+            min_length=1,
+        ),
+    ]
+
+
+class MeasurementTerms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    billing_measurement: Annotated[
+        BillingMeasurement | None,
+        Field(
+            description="Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV)."
+        ),
+    ] = None
+    makegood_policy: Annotated[
+        MakegoodPolicy | None,
+        Field(
+            description='Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.'
+        ),
+    ] = None
+
+
+class Metric11(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class PerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        Metric11,
+        Field(
+            description='The performance metric this standard applies to.',
+            title='Performance Standard Metric',
+        ),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            title='Viewability Standard',
+        ),
+    ] = None
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+
+
+class DeclaredBy232(DeclaredBy):
+    pass
+
+
+class RenderGuidance232(RenderGuidance):
+    pass
+
+
+class Jurisdiction246(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance232 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure233(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction246] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem232(VerificationItem):
+    pass
+
+
+class Provenance232(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy232 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure233 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem232] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets333(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    format: Annotated[
+        str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
+    ] = None
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    provenance: Annotated[
+        Provenance232 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy233(DeclaredBy):
+    pass
+
+
+class RenderGuidance233(RenderGuidance):
+    pass
+
+
+class Jurisdiction247(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance233 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure234(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction247] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem233(VerificationItem):
+    pass
+
+
+class Provenance233(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy233 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure234 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem233] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets334(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
+    ] = None
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    ] = None
+    frame_rate: Annotated[
+        str | None,
+        Field(
+            description="Frame rate as string to preserve precision (e.g., '23.976', '29.97', '30')"
+        ),
+    ] = None
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
+    ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
+    gop_interval_seconds: Annotated[
+        float | None, Field(description='GOP/keyframe interval in seconds')
+    ] = None
+    gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
+    has_audio: Annotated[
+        bool | None, Field(description='Whether the video contains an audio track')
+    ] = None
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
+    ] = None
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
+    ] = None
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the video content')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance233 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy234(DeclaredBy):
+    pass
+
+
+class RenderGuidance234(RenderGuidance):
+    pass
+
+
+class Jurisdiction248(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance234 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure235(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction248] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem234(VerificationItem):
+    pass
+
+
+class Provenance234(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy234 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure235 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem234] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets335(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    ] = None
+    codec: Annotated[
+        str | None,
+        Field(
+            description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
+        ),
+    ] = None
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
+    ] = None
+    channels: Annotated[AudioChannels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[AudioBitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    ] = None
+    loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance234 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy235(DeclaredBy):
+    pass
+
+
+class RenderGuidance235(RenderGuidance):
+    pass
+
+
+class Jurisdiction249(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance235 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure236(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction249] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem235(VerificationItem):
+    pass
+
+
+class Provenance235(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy235 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure236 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem235] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets336(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance235 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy236(DeclaredBy):
+    pass
+
+
+class RenderGuidance236(RenderGuidance):
+    pass
+
+
+class Jurisdiction250(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance236 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure237(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction250] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem236(VerificationItem):
+    pass
+
+
+class Provenance236(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy236 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure237 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem236] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets337(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating VAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        VastVersion | None, Field(description='VAST specification version', title='VAST Version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent] | None, Field(description='Tracking events supported by this VAST tag')
+    ] = None
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
+    ] = None
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        Provenance236 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy237(DeclaredBy):
+    pass
+
+
+class RenderGuidance237(RenderGuidance):
+    pass
+
+
+class Jurisdiction251(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance237 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure238(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction251] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem237(VerificationItem):
+    pass
+
+
+class Provenance237(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy237 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure238 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem237] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets338(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='Text content')]
+    language: Annotated[str | None, Field(description="Language code (e.g., 'en', 'es', 'fr')")] = (
+        None
+    )
+    provenance: Annotated[
+        Provenance237 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy238(DeclaredBy):
+    pass
+
+
+class RenderGuidance238(RenderGuidance):
+    pass
+
+
+class Jurisdiction252(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance238 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure239(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction252] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem238(VerificationItem):
+    pass
+
+
+class Provenance238(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy238 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure239 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem238] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets339(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        UrlType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)",
+            title='URL Asset Type',
+        ),
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Description of what this URL points to')
+    ] = None
+    provenance: Annotated[
+        Provenance238 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy239(DeclaredBy):
+    pass
+
+
+class RenderGuidance239(RenderGuidance):
+    pass
+
+
+class Jurisdiction253(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance239 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure240(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction253] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem239(VerificationItem):
+    pass
+
+
+class Provenance239(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy239 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure240 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem239] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets340(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance239 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy240(DeclaredBy):
+    pass
+
+
+class RenderGuidance240(RenderGuidance):
+    pass
+
+
+class Jurisdiction254(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance240 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure241(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction254] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem240(VerificationItem):
+    pass
+
+
+class Provenance240(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy240 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure241 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem240] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets341(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='JavaScript content')]
+    module_type: Annotated[
+        ModuleType | None,
+        Field(description='JavaScript module type', title='JavaScript Module Type'),
+    ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
+    provenance: Annotated[
+        Provenance240 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Security13(Security):
+    pass
+
+
+class DeclaredBy241(DeclaredBy):
+    pass
+
+
+class RenderGuidance241(RenderGuidance):
+    pass
+
+
+class Jurisdiction255(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance241 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure242(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction255] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem241(VerificationItem):
+    pass
+
+
+class Provenance241(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy241 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure242 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem241] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets342(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
+    method: Annotated[Method | None, Field(description='HTTP method', title='HTTP Method')] = (
+        Method.POST
+    )
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+        ),
+    ] = None
+    required_macros: Annotated[
+        list[SupportedMacros | str] | None,
+        Field(description='Universal macros that must be provided for webhook to function'),
+    ] = None
+    response_type: Annotated[
+        ResponseType,
+        Field(
+            description='Expected content type of webhook response', title='Webhook Response Type'
+        ),
+    ]
+    security: Annotated[Security13, Field(description='Security configuration for webhook calls')]
+    provenance: Annotated[
+        Provenance241 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy242(DeclaredBy):
+    pass
+
+
+class RenderGuidance242(RenderGuidance):
+    pass
+
+
+class Jurisdiction256(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance242 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure243(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction256] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem242(VerificationItem):
+    pass
+
+
+class Provenance242(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy242 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure243 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem242] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets343(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    content: Annotated[str, Field(description='CSS content')]
+    media: Annotated[
+        str | None, Field(description="CSS media query context (e.g., 'screen', 'print')")
+    ] = None
+    provenance: Annotated[
+        Provenance242 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy243(DeclaredBy):
+    pass
+
+
+class RenderGuidance243(RenderGuidance):
+    pass
+
+
+class Jurisdiction257(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance243 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure244(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction257] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem243(VerificationItem):
+    pass
+
+
+class Provenance243(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy243 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure244 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem243] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets344(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['url'],
+        Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
+    ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent50] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance243 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class DeclaredBy244(DeclaredBy):
+    pass
+
+
+class RenderGuidance244(RenderGuidance):
+    pass
+
+
+class Jurisdiction258(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance244 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure245(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction258] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem244(VerificationItem):
+    pass
+
+
+class Provenance244(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy244 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure245 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem244] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Assets345(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    delivery_type: Annotated[
+        Literal['inline'],
+        Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
+    ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        DaastVersion | None, Field(description='DAAST specification version', title='DAAST Version')
+    ] = None
+    duration_ms: Annotated[
+        int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
+    ] = None
+    tracking_events: Annotated[
+        list[TrackingEvent50] | None,
+        Field(description='Tracking events supported by this DAAST tag'),
+    ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
+    provenance: Annotated[
+        Provenance244 | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class Assets346(Assets330):
+    pass
+
+
+class ReferenceAsset13(ReferenceAsset):
+    pass
+
+
+class Jurisdiction259(Jurisdiction244):
+    pass
+
+
+class RequiredDisclosure14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        Position | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative',
+            title='Disclosure Position',
+        ),
+    ] = None
+    jurisdictions: Annotated[
+        list[Jurisdiction259] | None,
+        Field(
+            description="Jurisdictions where this disclosure is required. ISO 3166-1 alpha-2 country codes or ISO 3166-2 subdivision codes (e.g., 'US', 'GB', 'US-NJ', 'CA-QC'). If omitted, the disclosure applies to all jurisdictions in the campaign.",
+            min_length=1,
+        ),
+    ] = None
+    regulation: Annotated[
+        str | None,
+        Field(
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+        ),
+    ] = None
+    min_duration_ms: Annotated[
+        int | None,
+        Field(
+            description='Minimum display duration in milliseconds. For video/audio disclosures, how long the disclosure must be visible or audible. For static formats, how long the disclosure must remain on screen before any auto-advance.',
+            ge=1,
+        ),
+    ] = None
+    language: Annotated[
+        str | None,
+        Field(
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+        ),
+    ] = None
+    persistence: Annotated[
+        Persistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.',
+            title='Disclosure Persistence',
+        ),
+    ] = None
+
+
+class Compliance14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required_disclosures: Annotated[
+        list[RequiredDisclosure14] | None,
+        Field(
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            min_length=1,
+        ),
+    ] = None
+    prohibited_claims: Annotated[
+        list[str] | None,
+        Field(
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Assets347(AdCPBaseModel):
+    name: Annotated[str, Field(description='Campaign or flight name for identification')]
+    objective: Annotated[
+        Objective | None,
+        Field(
+            description='Campaign objective that guides creative tone and call-to-action strategy'
+        ),
+    ] = None
+    tone: Annotated[
+        str | None,
+        Field(
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+        ),
+    ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
+    territory: Annotated[
+        str | None,
+        Field(description='Creative territory or positioning the campaign should occupy'),
+    ] = None
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[ReferenceAsset13] | None,
+        Field(
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance14 | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
+        ),
+    ] = None
+
+
+class FeedFieldMapping20(FeedFieldMapping):
+    pass
+
+
+class Assets348(AdCPBaseModel):
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping20] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class IndustryIdentifier12(IndustryIdentifier):
+    pass
+
+
+class DeclaredBy245(DeclaredBy):
+    pass
+
+
+class RenderGuidance245(RenderGuidance):
+    pass
+
+
+class Jurisdiction260(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    country: Annotated[
+        str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
+    ]
+    region: Annotated[
+        str | None,
+        Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
+    ] = None
+    regulation: Annotated[
+        str,
+        Field(
+            description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
+        ),
+    ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
+    render_guidance: Annotated[
+        RenderGuidance245 | None,
+        Field(
+            description="How the disclosure should be rendered for this jurisdiction. Expresses the declaring party's intent for persistence and position based on regulatory requirements. Publishers control actual rendering but governance agents can audit whether guidance was followed."
+        ),
+    ] = None
+
+
+class Disclosure246(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether AI disclosure is required for this content based on applicable regulations'
+        ),
+    ]
+    jurisdictions: Annotated[
+        list[Jurisdiction260] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
+
+
+class VerificationItem245(VerificationItem):
+    pass
+
+
+class Provenance245(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    digital_source_type: Annotated[
+        DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content',
+            title='Digital Source Type',
+        ),
+    ] = None
+    ai_tool: Annotated[
+        AiTool | None,
+        Field(
+            description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
+        ),
+    ] = None
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy245 | None,
+        Field(
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
+        ),
+    ] = None
+    declared_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
+        ),
+    ] = None
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
+    ] = None
+    c2pa: Annotated[
+        C2pa | None,
+        Field(
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+        ),
+    ] = None
+    disclosure: Annotated[
+        Disclosure246 | None,
+        Field(
+            description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
+        ),
+    ] = None
+    verification: Annotated[
+        list[VerificationItem245] | None,
+        Field(
+            description='Third-party verification or detection results for this content. Multiple services may independently evaluate the same content. Provenance is a claim — verification results attached by the declaring party are supplementary. The enforcing party (e.g., seller/publisher) should run its own verification via get_creative_features or calibrate_content.',
+            min_length=1,
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Creative12(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        FormatId,
+        Field(
+            description='Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.',
+            title='Format ID',
+        ),
+    ]
+    assets: Annotated[
+        dict[
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            Assets333
+            | Assets334
+            | Assets335
+            | Assets336
+            | Assets337
+            | Assets338
+            | Assets339
+            | Assets340
+            | Assets341
+            | Assets342
+            | Assets343
+            | Assets344
+            | Assets345
+            | Assets346
+            | Assets347
+            | Assets348,
+        ],
+        Field(description='Assets required by the format, keyed by asset_id'),
+    ]
+    inputs: Annotated[
+        list[Input] | None,
+        Field(
+            description='Preview contexts for generative formats - defines what scenarios to generate previews for'
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
+    ] = None
+    status: Annotated[
+        Status | None,
+        Field(
+            description="For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state).",
+            title='Creative Status',
+        ),
+    ] = None
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Optional delivery weight for creative rotation when uploading via create_media_buy or update_media_buy (0-100). If omitted, platform determines rotation. Only used during upload to media buy - not stored in creative library.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            min_length=1,
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[IndustryIdentifier12] | None,
+        Field(
+            description='Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.'
+        ),
+    ] = None
+    provenance: Annotated[
+        Provenance245 | None,
+        Field(
+            description='Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).',
+            title='Provenance',
+        ),
+    ] = None
+
+
+class NewPackage(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    product_id: Annotated[str, Field(description='Product ID for this package')]
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.',
+            min_length=1,
+        ),
+    ] = None
+    budget: Annotated[
+        float,
+        Field(description="Budget allocation for this package in the media buy's currency", ge=0.0),
+    ]
+    pacing: Annotated[
+        Pacing | None, Field(description='Budget pacing strategy', title='Pacing')
+    ] = None
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description="ID of the selected pricing option from the product's pricing_options array"
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            ge=0.0,
+        ),
+    ] = None
+    impressions: Annotated[
+        float | None, Field(description='Impression goal for this package', ge=0.0)
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.'
+        ),
+    ] = False
+    catalogs: Annotated[
+        list[Catalog9] | None,
+        Field(
+            description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.'
+        ),
+    ] = None
+    optimization_goals: Annotated[
+        list[OptimizationGoals8 | OptimizationGoals9] | None,
+        Field(
+            description='Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.',
+            min_length=1,
+        ),
+    ] = None
+    targeting_overlay: Annotated[
+        TargetingOverlay4 | None,
+        Field(
+            description='Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).',
+            title='Targeting Overlay',
+        ),
+    ] = None
+    measurement_terms: Annotated[
+        MeasurementTerms | None,
+        Field(
+            description="Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply.",
+            title='Measurement Terms',
+        ),
+    ] = None
+    performance_standards: Annotated[
+        list[PerformanceStandard] | None,
+        Field(
+            description="Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+            min_length=1,
+        ),
+    ] = None
+    creative_assignments: Annotated[
+        list[CreativeAssignment] | None,
+        Field(
+            description='Assign existing library creatives to this package with optional weights and placement targeting',
+            min_length=1,
+        ),
+    ] = None
+    creatives: Annotated[
+        list[Creative12] | None,
+        Field(
+            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
+            max_length=100,
+            min_length=1,
+        ),
+    ] = None
+    agency_estimate_number: Annotated[
+        str | None,
+        Field(
+            description='Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy).',
+            max_length=100,
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Scheme(Enum):
+    Bearer = 'Bearer'
+    HMAC_SHA256 = 'HMAC-SHA256'
+
+
+class Authentication(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    schemes: Annotated[
+        list[Scheme],
+        Field(
+            description="Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
+            max_length=1,
+            min_length=1,
+        ),
+    ]
+    credentials: Annotated[
+        str,
+        Field(
+            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
+            min_length=32,
+        ),
+    ]
+
+
+class ReportingFrequency(Enum):
+    hourly = 'hourly'
+    daily = 'daily'
+    monthly = 'monthly'
+
+
+class RequestedMetric(Enum):
+    impressions = 'impressions'
+    spend = 'spend'
+    clicks = 'clicks'
+    ctr = 'ctr'
+    video_completions = 'video_completions'
+    completion_rate = 'completion_rate'
+    conversions = 'conversions'
+    conversion_value = 'conversion_value'
+    roas = 'roas'
+    cost_per_acquisition = 'cost_per_acquisition'
+    new_to_brand_rate = 'new_to_brand_rate'
+    viewability = 'viewability'
+    engagement_rate = 'engagement_rate'
+    views = 'views'
+    completed_views = 'completed_views'
+    leads = 'leads'
+    reach = 'reach'
+    frequency = 'frequency'
+    grps = 'grps'
+    quartile_data = 'quartile_data'
+    dooh_metrics = 'dooh_metrics'
+    cost_per_click = 'cost_per_click'
+
+
+class ReportingWebhook(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for reporting notifications')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
+    authentication: Annotated[
+        Authentication,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
+    reporting_frequency: Annotated[
+        ReportingFrequency,
+        Field(
+            description='Frequency for automated reporting delivery. Must be supported by all products in the media buy.'
+        ),
+    ]
+    requested_metrics: Annotated[
+        list[RequestedMetric] | None,
+        Field(
+            description="Optional list of metrics to include in webhook notifications. If omitted, all available metrics are included. Must be subset of product's available_metrics."
+        ),
+    ] = None
+
+
+class Authentication10(Authentication):
+    pass
+
+
+class PushNotificationConfig(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for task status notifications')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
+    authentication: Annotated[
+        Authentication10,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
+
+
+class UpdateMediaBuyRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account44,
+        Field(
+            description='Account that owns this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts. Required for governance checks and account resolution.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ]
+    media_buy_id: Annotated[str, Field(description="Seller's ID of the media buy to update")]
+    revision: Annotated[
+        int | None,
+        Field(
+            description="Expected current revision for optimistic concurrency. When provided, sellers MUST reject the update with CONFLICT if the media buy's current revision does not match. Obtain from get_media_buys or the most recent update response.",
+            ge=1,
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(description='Pause/resume the entire media buy (true = paused, false = active)'),
+    ] = None
+    canceled: Annotated[
+        Literal[True],
+        Field(
+            description='Cancel the entire media buy. Cancellation is irreversible — canceled media buys cannot be reactivated. Sellers MAY reject with NOT_CANCELLABLE if the media buy cannot be canceled in its current state.'
+        ),
+    ] = True
+    cancellation_reason: Annotated[
+        str | None,
+        Field(
+            description='Reason for cancellation. Sellers SHOULD store this and return it in subsequent get_media_buys responses.',
+            max_length=500,
+        ),
+    ] = None
+    start_time: Annotated[
+        Literal['asap'] | AwareDatetime | None,
+        Field(
+            description="Campaign start timing: 'asap' or ISO 8601 date-time", title='Start Timing'
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None, Field(description='New end date/time in ISO 8601 format')
+    ] = None
+    packages: Annotated[
+        list[Package] | None,
+        Field(description='Package-specific updates for existing packages', min_length=1),
+    ] = None
+    invoice_recipient: Annotated[
+        InvoiceRecipient | None,
+        Field(
+            description="Update who receives the invoice for this buy. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request.",
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    new_packages: Annotated[
+        list[NewPackage] | None,
+        Field(
+            description='New packages to add to this media buy. Uses the same schema as create_media_buy packages. Sellers that support mid-flight package additions advertise add_packages in valid_actions. Sellers that do not support this MUST reject with UNSUPPORTED_FEATURE.',
+            min_length=1,
+        ),
+    ] = None
+    reporting_webhook: Annotated[
+        ReportingWebhook | None,
+        Field(
+            description='Optional webhook configuration for automated reporting delivery. Updates the reporting configuration for this media buy.',
+            title='Reporting Webhook',
+        ),
+    ] = None
+    push_notification_config: Annotated[
+        PushNotificationConfig | None,
+        Field(
+            description='Optional webhook configuration for async update notifications. Publisher will send webhook when update completes if operation takes longer than immediate response time. This is separate from reporting_webhook which configures ongoing campaign reporting.',
+            title='Push Notification Config',
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated idempotency key for safe retries. If an update fails without a response, resending with the same idempotency_key guarantees the update is applied at most once. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/media_buy/update_media_buy_response.py b/src/adcp/types/generated_poc/bundled/media_buy/update_media_buy_response.py
new file mode 100644
index 000000000..68c081596
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/media_buy/update_media_buy_response.py
@@ -0,0 +1,2337 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/media_buy/update_media_buy_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field, RootModel
+
+
+class Status(Enum):
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
+    active = 'active'
+    paused = 'paused'
+    completed = 'completed'
+    rejected = 'rejected'
+    canceled = 'canceled'
+
+
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
+    ]
+    city: Annotated[str, Field(max_length=100)]
+    postal_code: Annotated[str, Field(max_length=20)]
+    region: Annotated[
+        str | None, Field(description='State, province, or region', max_length=100)
+    ] = None
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    ]
+
+
+class Role(Enum):
+    billing = 'billing'
+    legal = 'legal'
+    creative = 'creative'
+    general = 'general'
+
+
+class Contact(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    role: Annotated[
+        Role, Field(description="Contact's functional role in the business relationship")
+    ]
+    name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
+        None
+    )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    phone: Annotated[str | None, Field(max_length=30)] = None
+
+
+class Bank(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
+    ] = None
+    bic: Annotated[
+        str | None,
+        Field(
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+        ),
+    ] = None
+    routing_number: Annotated[
+        str | None,
+        Field(
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
+        ),
+    ] = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class InvoiceRecipient(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    legal_name: Annotated[
+        str, Field(description='Registered legal name of the business entity', max_length=200)
+    ]
+    vat_id: Annotated[
+        str | None,
+        Field(
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+        ),
+    ] = None
+    tax_id: Annotated[
+        str | None,
+        Field(
+            description='Tax identification number for jurisdictions that do not use VAT (e.g., US EIN)',
+            max_length=30,
+        ),
+    ] = None
+    registration_number: Annotated[
+        str | None,
+        Field(
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
+        ),
+    ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Pacing(Enum):
+    even = 'even'
+    asap = 'asap'
+    front_loaded = 'front_loaded'
+
+
+class Kind(Enum):
+    fee = 'fee'
+    discount = 'discount'
+    commission = 'commission'
+    settlement = 'settlement'
+
+
+class Adjustments(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Annotated[
+        Kind,
+        Field(
+            description='Categorizes how a price adjustment affects the transaction',
+            title='Price Adjustment Kind',
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description='Specific adjustment name. Use well-known values where applicable for interoperability.',
+            examples=[
+                'ad_serving',
+                'data_targeting',
+                'brand_safety',
+                'volume',
+                'negotiated',
+                'early_booking',
+                'agency',
+                'intermediary',
+                'cash_discount',
+                'early_payment',
+            ],
+            max_length=64,
+        ),
+    ]
+    rate: Annotated[
+        float,
+        Field(
+            description='Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive — kind determines the economic effect. Mutually exclusive with amount.',
+            gt=0.0,
+            lt=1.0,
+        ),
+    ]
+    amount: Annotated[
+        float | None,
+        Field(
+            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
+            gt=0.0,
+        ),
+    ] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            max_length=256,
+        ),
+    ] = None
+    beneficiary: Annotated[
+        str | None,
+        Field(
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            max_length=256,
+        ),
+    ] = None
+
+
+class Adjustments23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Annotated[
+        Kind,
+        Field(
+            description='Categorizes how a price adjustment affects the transaction',
+            title='Price Adjustment Kind',
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description='Specific adjustment name. Use well-known values where applicable for interoperability.',
+            examples=[
+                'ad_serving',
+                'data_targeting',
+                'brand_safety',
+                'volume',
+                'negotiated',
+                'early_booking',
+                'agency',
+                'intermediary',
+                'cash_discount',
+                'early_payment',
+            ],
+            max_length=64,
+        ),
+    ]
+    rate: Annotated[
+        float | None,
+        Field(
+            description='Adjustment as a decimal proportion (e.g., 0.15 for 15%). Always positive — kind determines the economic effect. Mutually exclusive with amount.',
+            gt=0.0,
+            lt=1.0,
+        ),
+    ] = None
+    amount: Annotated[
+        float,
+        Field(
+            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
+            gt=0.0,
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            max_length=256,
+        ),
+    ] = None
+    beneficiary: Annotated[
+        str | None,
+        Field(
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            max_length=256,
+        ),
+    ] = None
+
+
+class PriceBreakdown(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    list_price: Annotated[
+        float,
+        Field(
+            description='Rate card or base price before any adjustments. The starting point from which fixed_price is derived by applying fee and discount adjustments sequentially.',
+            gt=0.0,
+        ),
+    ]
+    adjustments: Annotated[
+        list[Adjustments | Adjustments23],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
+
+
+class Type(Enum):
+    offering = 'offering'
+    product = 'product'
+    inventory = 'inventory'
+    store = 'store'
+    promotion = 'promotion'
+    hotel = 'hotel'
+    flight = 'flight'
+    job = 'job'
+    vehicle = 'vehicle'
+    real_estate = 'real_estate'
+    education = 'education'
+    destination = 'destination'
+    app = 'app'
+
+
+class FeedFormat(Enum):
+    google_merchant_center = 'google_merchant_center'
+    facebook_catalog = 'facebook_catalog'
+    shopify = 'shopify'
+    linkedin_jobs = 'linkedin_jobs'
+    custom = 'custom'
+
+
+class UpdateFrequency(Enum):
+    realtime = 'realtime'
+    hourly = 'hourly'
+    daily = 'daily'
+    weekly = 'weekly'
+
+
+class Gtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class ConversionEvent(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class ContentIdType(Enum):
+    sku = 'sku'
+    gtin = 'gtin'
+    offering_id = 'offering_id'
+    job_id = 'job_id'
+    hotel_id = 'hotel_id'
+    flight_id = 'flight_id'
+    vehicle_id = 'vehicle_id'
+    listing_id = 'listing_id'
+    store_id = 'store_id'
+    program_id = 'program_id'
+    destination_id = 'destination_id'
+    app_id = 'app_id'
+
+
+class Transform(Enum):
+    date = 'date'
+    divide = 'divide'
+    boolean = 'boolean'
+    split = 'split'
+
+
+class FeedFieldMapping(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    feed_field: Annotated[
+        str | None,
+        Field(
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+        ),
+    ] = None
+    catalog_field: Annotated[
+        str | None,
+        Field(
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+        ),
+    ] = None
+    asset_group_id: Annotated[
+        str | None,
+        Field(
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+        ),
+    ] = None
+    value: Annotated[
+        Any | None,
+        Field(
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+        ),
+    ] = None
+    transform: Annotated[
+        Transform | None,
+        Field(
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+        ),
+    ] = None
+    format: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
+        ),
+    ] = None
+    timezone: Annotated[
+        str | None,
+        Field(
+            description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
+        ),
+    ] = None
+    by: Annotated[
+        float | None,
+        Field(
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
+        ),
+    ] = None
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
+        Any | None,
+        Field(
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Catalog(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str | None,
+        Field(
+            description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+        ),
+    ] = None
+    type: Annotated[
+        Type,
+        Field(
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema.",
+            title='Catalog Type',
+        ),
+    ]
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+        ),
+    ] = None
+    feed_format: Annotated[
+        FeedFormat | None,
+        Field(
+            description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.',
+            title='Feed Format',
+        ),
+    ] = None
+    update_frequency: Annotated[
+        UpdateFrequency | None,
+        Field(
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.',
+            title='Update Frequency',
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            min_length=1,
+        ),
+    ] = None
+    ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to specific item IDs. For offering-type catalogs, these are offering_id values. For product-type catalogs, these are SKU identifiers.',
+            min_length=1,
+        ),
+    ] = None
+    gtins: Annotated[
+        list[Gtin] | None,
+        Field(
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            min_length=1,
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
+        ),
+    ] = None
+    query: Annotated[
+        str | None,
+        Field(
+            description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
+        ),
+    ] = None
+    conversion_events: Annotated[
+        list[ConversionEvent] | None,
+        Field(
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
+            min_length=1,
+        ),
+    ] = None
+    content_id_type: Annotated[
+        ContentIdType | None,
+        Field(
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum.",
+            title='Content ID Type',
+        ),
+    ] = None
+    feed_field_mappings: Annotated[
+        list[FeedFieldMapping] | None,
+        Field(
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class FormatId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Format identifier within the agent's namespace (e.g., 'display_static', 'video_hosted', 'audio_standard'). When used alone, references a template format. When combined with dimension/duration fields, creates a parameterized format ID for a specific variant.",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+    width: Annotated[
+        int | None,
+        Field(
+            description='Width in pixels for visual formats. When specified, height must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
+
+
+class GeoCountry(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class GeoCountriesExcludeItem(GeoCountry):
+    pass
+
+
+class GeoRegion(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+
+
+class GeoRegionsExcludeItem(GeoRegion):
+    pass
+
+
+class System(Enum):
+    nielsen_dma = 'nielsen_dma'
+    uk_itl1 = 'uk_itl1'
+    uk_itl2 = 'uk_itl2'
+    eurostat_nuts2 = 'eurostat_nuts2'
+    custom = 'custom'
+
+
+class GeoMetro(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoMetrosExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System,
+        Field(
+            description="Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')",
+            title='Metro Area System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Metro codes to exclude within the system (e.g., ['501', '602'] for Nielsen DMAs)",
+            min_length=1,
+        ),
+    ]
+
+
+class System27(Enum):
+    us_zip = 'us_zip'
+    us_zip_plus_four = 'us_zip_plus_four'
+    gb_outward = 'gb_outward'
+    gb_full = 'gb_full'
+    ca_fsa = 'ca_fsa'
+    ca_full = 'ca_full'
+    de_plz = 'de_plz'
+    fr_code_postal = 'fr_code_postal'
+    au_postcode = 'au_postcode'
+    ch_plz = 'ch_plz'
+    at_plz = 'at_plz'
+
+
+class GeoPostalArea(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System27,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class GeoPostalAreasExcludeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        System27,
+        Field(
+            description="Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision.",
+            title='Postal Code System',
+        ),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes to exclude within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
+
+
+class Day(Enum):
+    monday = 'monday'
+    tuesday = 'tuesday'
+    wednesday = 'wednesday'
+    thursday = 'thursday'
+    friday = 'friday'
+    saturday = 'saturday'
+    sunday = 'sunday'
+
+
+class DaypartTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    days: Annotated[
+        list[Day],
+        Field(
+            description='Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).',
+            min_length=1,
+        ),
+    ]
+    start_hour: Annotated[
+        int,
+        Field(
+            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
+            ge=0,
+            le=23,
+        ),
+    ]
+    end_hour: Annotated[
+        int,
+        Field(
+            description='End hour (exclusive), 1-24 in 24-hour format. 10 = 10:00am, 24 = midnight. Must be greater than start_hour.',
+            ge=1,
+            le=24,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
+        ),
+    ] = None
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class Suppress(AdCPBaseModel):
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class Per(AdCPBaseModel):
+    pass
+
+
+class Window(Suppress):
+    pass
+
+
+class FrequencyCap(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ]
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress19(Suppress):
+    pass
+
+
+class Window30(Suppress):
+    pass
+
+
+class FrequencyCap19(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress19 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ]
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window30 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class Suppress20(Suppress):
+    pass
+
+
+class Window31(Suppress):
+    pass
+
+
+class FrequencyCap20(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    suppress: Annotated[
+        Suppress20 | None,
+        Field(
+            description='Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {"interval": 60, "unit": "minutes"} for a 1-hour cooldown). Preferred over suppress_minutes.'
+        ),
+    ] = None
+    suppress_minutes: Annotated[
+        float | None,
+        Field(
+            description='Deprecated — use suppress instead. Cooldown period in minutes between consecutive exposures to the same entity (e.g. 60 for a 1-hour cooldown).',
+            ge=0.0,
+        ),
+    ] = None
+    max_impressions: Annotated[
+        int,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ]
+    per: Annotated[
+        Per | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
+    window: Annotated[
+        Window31 | None,
+        Field(
+            description='Time window for the max_impressions cap (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Required when max_impressions is set.'
+        ),
+    ] = None
+
+
+class PropertyList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the property list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the property list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the collection list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the collection list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
+
+
+class CollectionListExclude(CollectionList):
+    pass
+
+
+class AcceptedMethod(Enum):
+    facial_age_estimation = 'facial_age_estimation'
+    id_document = 'id_document'
+    digital_id = 'digital_id'
+    credit_card = 'credit_card'
+    world_id = 'world_id'
+
+
+class AgeRestriction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[int, Field(description='Minimum age required', ge=13, le=99)]
+    verification_required: Annotated[
+        bool | None,
+        Field(description='Whether verified age (not inferred) is required for compliance'),
+    ] = False
+    accepted_methods: Annotated[
+        list[AcceptedMethod] | None,
+        Field(
+            description='Accepted verification methods. If omitted, any method the platform supports is acceptable.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class DevicePlatformEnum(Enum):
+    ios = 'ios'
+    android = 'android'
+    windows = 'windows'
+    macos = 'macos'
+    linux = 'linux'
+    chromeos = 'chromeos'
+    tvos = 'tvos'
+    tizen = 'tizen'
+    webos = 'webos'
+    fire_os = 'fire_os'
+    roku_os = 'roku_os'
+    unknown = 'unknown'
+
+
+class DeviceTypeEnum(Enum):
+    desktop = 'desktop'
+    mobile = 'mobile'
+    tablet = 'tablet'
+    ctv = 'ctv'
+    dooh = 'dooh'
+    unknown = 'unknown'
+
+
+class StoreCatchment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_id: Annotated[
+        str, Field(description='Synced store-type catalog ID from sync_catalogs.')
+    ]
+    store_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific stores within the catalog. Omit to target all stores.',
+            min_length=1,
+        ),
+    ] = None
+    catchment_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class Unit128(Enum):
+    min = 'min'
+    hr = 'hr'
+
+
+class TravelTime(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
+    unit: Annotated[Unit128, Field(description='Time unit.')]
+
+
+class TransportMode(Enum):
+    walking = 'walking'
+    cycling = 'cycling'
+    driving = 'driving'
+    public_transport = 'public_transport'
+
+
+class Unit129(Enum):
+    km = 'km'
+    mi = 'mi'
+    m = 'm'
+
+
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    unit: Annotated[Unit129, Field(description='Distance unit.', title='Distance Unit')]
+
+
+class Type107(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
+
+
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type107, Field(description='GeoJSON geometry type.')]
+    coordinates: Annotated[
+        list[Any],
+        Field(
+            description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
+        ),
+    ]
+
+
+class GeoProximity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ]
+    transport_mode: Annotated[
+        TransportMode,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ]
+    radius: Annotated[
+        Radius | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime26(TravelTime):
+    pass
+
+
+class Radius26(Radius):
+    pass
+
+
+class Geometry26(Geometry):
+    pass
+
+
+class GeoProximity27(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ]
+    lng: Annotated[
+        float,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime26 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius26,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ]
+    geometry: Annotated[
+        Geometry26 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class TravelTime27(TravelTime):
+    pass
+
+
+class Radius27(Radius):
+    pass
+
+
+class Geometry27(Geometry):
+    pass
+
+
+class GeoProximity28(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    lat: Annotated[
+        float | None,
+        Field(
+            description='Latitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-90.0,
+            le=90.0,
+        ),
+    ] = None
+    lng: Annotated[
+        float | None,
+        Field(
+            description='Longitude in decimal degrees (WGS 84). Required for travel_time and radius methods.',
+            ge=-180.0,
+            le=180.0,
+        ),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime27 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
+    transport_mode: Annotated[
+        TransportMode | None,
+        Field(
+            description='Transportation mode for isochrone calculation. Required when travel_time is provided.',
+            title='Transport Mode',
+        ),
+    ] = None
+    radius: Annotated[
+        Radius27 | None,
+        Field(
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ] = None
+    geometry: Annotated[
+        Geometry27,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class LanguageItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z]{2}$')]
+
+
+class MatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class KeywordTarget(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[
+        MatchType,
+        Field(
+            description='Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly'
+        ),
+    ]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class NegativeKeyword(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    keyword: Annotated[str, Field(description='The keyword to exclude', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type for exclusion')]
+
+
+class TargetingOverlay(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    geo_countries: Annotated[
+        list[GeoCountry] | None,
+        Field(
+            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_countries_exclude: Annotated[
+        list[GeoCountriesExcludeItem] | None,
+        Field(
+            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions: Annotated[
+        list[GeoRegion] | None,
+        Field(
+            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_regions_exclude: Annotated[
+        list[GeoRegionsExcludeItem] | None,
+        Field(
+            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
+        ),
+    ] = None
+    geo_metros: Annotated[
+        list[GeoMetro] | None,
+        Field(
+            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_metros_exclude: Annotated[
+        list[GeoMetrosExcludeItem] | None,
+        Field(
+            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas: Annotated[
+        list[GeoPostalArea] | None,
+        Field(
+            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    geo_postal_areas_exclude: Annotated[
+        list[GeoPostalAreasExcludeItem] | None,
+        Field(
+            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    daypart_targets: Annotated[
+        list[DaypartTarget] | None,
+        Field(
+            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
+            min_length=1,
+        ),
+    ] = None
+    axe_include_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
+        ),
+    ] = None
+    axe_exclude_segment: Annotated[
+        str | None,
+        Field(
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
+        ),
+    ] = None
+    audience_include: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    audience_exclude: Annotated[
+        list[str] | None,
+        Field(
+            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    frequency_cap: Annotated[
+        FrequencyCap | FrequencyCap19 | FrequencyCap20 | None,
+        Field(
+            description='Frequency capping settings for package-level application. Two types of frequency control can be used independently or together: suppress enforces a cooldown between consecutive exposures; max_impressions + per + window caps total exposures per entity in a time window. When both suppress and max_impressions are set, an impression is delivered only if both constraints permit it (AND semantics). At least one of suppress, suppress_minutes, or max_impressions must be set.',
+            title='Frequency Cap',
+        ),
+    ] = None
+    property_list: Annotated[
+        PropertyList | None,
+        Field(
+            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false.",
+            title='Property List Reference',
+        ),
+    ] = None
+    collection_list: Annotated[
+        CollectionList | None,
+        Field(
+            description='Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.',
+            title='Collection List Reference',
+        ),
+    ] = None
+    collection_list_exclude: Annotated[
+        CollectionListExclude | None,
+        Field(
+            description="Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities.",
+            title='Collection List Reference',
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(
+            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        list[DevicePlatformEnum] | None,
+        Field(
+            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
+            min_length=1,
+        ),
+    ] = None
+    device_type: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    device_type_exclude: Annotated[
+        list[DeviceTypeEnum] | None,
+        Field(
+            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
+            min_length=1,
+        ),
+    ] = None
+    store_catchments: Annotated[
+        list[StoreCatchment] | None,
+        Field(
+            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
+            min_length=1,
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity27 | GeoProximity28] | None,
+        Field(
+            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    language: Annotated[
+        list[LanguageItem] | None,
+        Field(
+            description="Restrict to users with specific language preferences. ISO 639-1 codes (e.g., 'en', 'es', 'fr').",
+            min_length=1,
+        ),
+    ] = None
+    keyword_targets: Annotated[
+        list[KeywordTarget] | None,
+        Field(
+            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+    negative_keywords: Annotated[
+        list[NegativeKeyword] | None,
+        Field(
+            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Vendor(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class BillingMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM).",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    max_variance_percent: Annotated[
+        float | None,
+        Field(
+            description="Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review).",
+            ge=0.0,
+            lt=100.0,
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=[
+                'live',
+                'c3',
+                'c7',
+                'tentative',
+                'final',
+                'post_ivt',
+                'post_sivt',
+                'downloads_30d',
+            ],
+        ),
+    ] = None
+
+
+class AvailableRemedy(Enum):
+    additional_delivery = 'additional_delivery'
+    credit = 'credit'
+    invoice_adjustment = 'invoice_adjustment'
+
+
+class MakegoodPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_remedies: Annotated[
+        list[AvailableRemedy],
+        Field(
+            description='Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.',
+            min_length=1,
+        ),
+    ]
+
+
+class MeasurementTerms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    billing_measurement: Annotated[
+        BillingMeasurement | None,
+        Field(
+            description="Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV)."
+        ),
+    ] = None
+    makegood_policy: Annotated[
+        MakegoodPolicy | None,
+        Field(
+            description='Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.'
+        ),
+    ] = None
+
+
+class Metric(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
+
+
+class Standard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
+
+
+class PerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        Metric,
+        Field(
+            description='The performance metric this standard applies to.',
+            title='Performance Standard Metric',
+        ),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        Standard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics.",
+            title='Viewability Standard',
+        ),
+    ] = None
+    vendor: Annotated[
+        Vendor,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor.",
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+
+
+class CreativeAssignment(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    weight: Annotated[
+        float | None,
+        Field(
+            description='Relative delivery weight for this creative (0–100). When multiple creatives are assigned to the same package, weights determine impression distribution proportionally — a creative with weight 2 gets twice the delivery of weight 1. When omitted, the creative receives equal rotation with other unweighted creatives. A weight of 0 means the creative is assigned but paused (receives no delivery).',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+            min_length=1,
+        ),
+    ] = None
+
+
+class FormatIdsToProvideItem(FormatId):
+    pass
+
+
+class Metric13(Enum):
+    clicks = 'clicks'
+    views = 'views'
+    completed_views = 'completed_views'
+    viewed_seconds = 'viewed_seconds'
+    attention_seconds = 'attention_seconds'
+    attention_score = 'attention_score'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    reach = 'reach'
+
+
+class ReachUnit(Per):
+    pass
+
+
+class Window32(Suppress):
+    pass
+
+
+class TargetFrequency(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ]
+    max: Annotated[
+        int | None,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ] = None
+    window: Annotated[
+        Window32,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Window33(Suppress):
+    pass
+
+
+class TargetFrequency13(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    min: Annotated[
+        int | None,
+        Field(
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
+        ),
+    ] = None
+    max: Annotated[
+        int,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ]
+    window: Annotated[
+        Window33,
+        Field(
+            description='Time window over which frequency is measured (e.g. {"interval": 7, "unit": "days"} or {"interval": 1, "unit": "campaign"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response.'
+        ),
+    ]
+
+
+class Target(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[
+        float, Field(description='Target cost per metric unit in the buy currency', gt=0.0)
+    ]
+
+
+class Target31(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['threshold_rate']
+    value: Annotated[
+        float,
+        Field(
+            description='Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).',
+            gt=0.0,
+        ),
+    ]
+
+
+class OptimizationGoals(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['metric']
+    metric: Annotated[
+        Metric13,
+        Field(
+            description="Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions — see view_duration_seconds), reach (unique audience reach — see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing — social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins — signals of intent to return), profile_visits (visits to the brand's in-platform page — profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
+        ),
+    ]
+    reach_unit: Annotated[
+        ReachUnit | None,
+        Field(
+            description="Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
+        ),
+    ] = None
+    target_frequency: Annotated[
+        TargetFrequency | TargetFrequency13 | None,
+        Field(
+            description="Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed."
+        ),
+    ] = None
+    view_duration_seconds: Annotated[
+        float | None,
+        Field(
+            description="Minimum video view duration in seconds that qualifies as a completed_view for this goal. Only applicable when metric is 'completed_views'. When omitted, the seller uses their platform default (typically 2–15 seconds). Common values: 2 (Snap/LinkedIn default), 6 (TikTok), 15 (Snap 15-second views, Meta ThruPlay). Sellers declare which durations they support in metric_optimization.supported_view_durations. Sellers must reject goals with unsupported values — silent rounding would create measurement discrepancies.",
+            gt=0.0,
+        ),
+    ] = None
+    target: Annotated[
+        Target | Target31 | None,
+        Field(
+            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class EventSource(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_source_id: Annotated[
+        str,
+        Field(
+            description='Event source to include (must be configured on this account via sync_event_sources)',
+            min_length=1,
+        ),
+    ]
+    event_type: Annotated[
+        ConversionEvent,
+        Field(
+            description='Event type to include from this source (e.g., purchase, lead, app_install, refund)',
+            title='Event Type',
+        ),
+    ]
+    custom_event_name: Annotated[
+        str | None,
+        Field(
+            description="Required when event_type is 'custom'. Platform-specific name for the custom event."
+        ),
+    ] = None
+    value_field: Annotated[
+        str | None,
+        Field(
+            description="Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' — sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs — the seller maps it to their platform's value ingestion mechanism."
+        ),
+    ] = None
+    value_factor: Annotated[
+        float | None,
+        Field(
+            description="Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs — the seller applies it when computing aggregated value metrics."
+        ),
+    ] = 1
+
+
+class Target32(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['cost_per']
+    value: Annotated[float, Field(description='Target cost per event in the buy currency', gt=0.0)]
+
+
+class Target33(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['per_ad_spend']
+    value: Annotated[
+        float,
+        Field(description='Target return ratio (e.g., 4.0 means $4 of value per $1 spent)', gt=0.0),
+    ]
+
+
+class Target34(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['maximize_value']
+
+
+class PostClick(Suppress):
+    pass
+
+
+class PostView(Suppress):
+    pass
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    post_click: Annotated[
+        PostClick,
+        Field(
+            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
+        ),
+    ]
+    post_view: Annotated[
+        PostView | None,
+        Field(
+            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
+        ),
+    ] = None
+
+
+class OptimizationGoals11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['event']
+    event_sources: Annotated[
+        list[EventSource],
+        Field(
+            description='Event source and type pairs that feed this goal. Each entry identifies a source and event type to include. When the seller supports multi_source_event_dedup (declared in get_adcp_capabilities), they deduplicate by event_id across all entries — the same business event from multiple sources counts once, using value_field and value_factor from the first matching entry. When multi_source_event_dedup is false or absent, buyers should use a single entry per goal; the seller will use only the first entry. All event sources must be configured via sync_event_sources.',
+            min_length=1,
+        ),
+    ]
+    target: Annotated[
+        Target32 | Target33 | Target34 | None,
+        Field(
+            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget — regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.'
+        ),
+    ] = None
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
+
+
+class CanceledBy(Enum):
+    buyer = 'buyer'
+    seller = 'seller'
+
+
+class Cancellation(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    canceled_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when this package was canceled.')
+    ]
+    canceled_by: Annotated[
+        CanceledBy,
+        Field(description='Which party initiated the package cancellation.', title='Canceled By'),
+    ]
+    reason: Annotated[
+        str | None, Field(description='Reason the package was canceled.', max_length=500)
+    ] = None
+    acknowledged_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation.'
+        ),
+    ] = None
+
+
+class AffectedPackage(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    package_id: Annotated[str, Field(description="Seller's unique identifier for the package")]
+    product_id: Annotated[
+        str | None, Field(description='ID of the product this package is based on')
+    ] = None
+    budget: Annotated[
+        float | None,
+        Field(
+            description='Budget allocation for this package in the currency specified by the pricing option',
+            ge=0.0,
+        ),
+    ] = None
+    pacing: Annotated[
+        Pacing | None, Field(description='Budget pacing strategy', title='Pacing')
+    ] = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description="ID of the selected pricing option from the product's pricing_options array"
+        ),
+    ] = None
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            ge=0.0,
+        ),
+    ] = None
+    price_breakdown: Annotated[
+        PriceBreakdown | None,
+        Field(
+            description="Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
+            title='Price Breakdown',
+        ),
+    ] = None
+    impressions: Annotated[
+        float | None, Field(description='Impression goal for this package', ge=0.0)
+    ] = None
+    catalogs: Annotated[
+        list[Catalog] | None,
+        Field(
+            description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Echoed from the create_media_buy request.'
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[FormatId] | None,
+        Field(
+            description='Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.'
+        ),
+    ] = None
+    targeting_overlay: Annotated[
+        TargetingOverlay | None,
+        Field(
+            description='Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).',
+            title='Targeting Overlay',
+        ),
+    ] = None
+    measurement_terms: Annotated[
+        MeasurementTerms | None,
+        Field(
+            description="Agreed billing measurement and makegood terms for this package. Reflects what was negotiated — may differ from the buyer's proposal or the product's defaults. When present, these terms are binding for the package's duration.",
+            title='Measurement Terms',
+        ),
+    ] = None
+    performance_standards: Annotated[
+        list[PerformanceStandard] | None,
+        Field(
+            description='Agreed performance standards for this package. When any entry specifies a vendor, creatives assigned to this package MUST include corresponding tracker_script or tracker_pixel assets from that vendor.',
+            min_length=1,
+        ),
+    ] = None
+    creative_assignments: Annotated[
+        list[CreativeAssignment] | None,
+        Field(description='Creative assets assigned to this package'),
+    ] = None
+    format_ids_to_provide: Annotated[
+        list[FormatIdsToProvideItem] | None,
+        Field(description='Format IDs that creative assets will be provided for this package'),
+    ] = None
+    optimization_goals: Annotated[
+        list[OptimizationGoals | OptimizationGoals11] | None,
+        Field(
+            description='Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.',
+            min_length=1,
+        ),
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package is paused by the buyer. Paused packages do not deliver impressions. Defaults to false.'
+        ),
+    ] = False
+    canceled: Annotated[
+        bool | None,
+        Field(
+            description='Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.'
+        ),
+    ] = False
+    cancellation: Annotated[
+        Cancellation | None,
+        Field(description='Cancellation metadata. Present only when canceled is true.'),
+    ] = None
+    agency_estimate_number: Annotated[
+        str | None,
+        Field(
+            description="Agency estimate or authorization number for this package. Echoed from the buyer's request. When present on the package, takes precedence over the media buy-level estimate number.",
+            max_length=100,
+        ),
+    ] = None
+    creative_deadline: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ValidAction(Enum):
+    pause = 'pause'
+    resume = 'resume'
+    cancel = 'cancel'
+    update_budget = 'update_budget'
+    update_dates = 'update_dates'
+    update_packages = 'update_packages'
+    add_packages = 'add_packages'
+    sync_creatives = 'sync_creatives'
+
+
+class UpdateMediaBuyResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    media_buy_id: Annotated[str, Field(description="Seller's identifier for the media buy")]
+    status: Annotated[
+        Status | None,
+        Field(
+            description="Media buy status after the update. Present when the update changes the media buy's status (e.g., cancellation transitions to 'canceled', pause transitions to 'paused').",
+            title='Media Buy Status',
+        ),
+    ] = None
+    revision: Annotated[
+        int | None,
+        Field(
+            description='Revision number after this update. Use this value in subsequent update_media_buy requests for optimistic concurrency.',
+            ge=1,
+        ),
+    ] = None
+    implementation_date: Annotated[
+        AwareDatetime | None,
+        Field(description='ISO 8601 timestamp when changes take effect (null if pending approval)'),
+    ] = None
+    invoice_recipient: Annotated[
+        InvoiceRecipient | None,
+        Field(
+            description='Updated invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).',
+            examples=[
+                {
+                    'description': 'German agency with full B2B details',
+                    'data': {
+                        'legal_name': 'Pinnacle Media GmbH',
+                        'vat_id': 'DE123456789',
+                        'registration_number': 'HRB 12345',
+                        'address': {
+                            'street': 'Friedrichstrasse 100',
+                            'city': 'Berlin',
+                            'postal_code': '10117',
+                            'country': 'DE',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'Sam Adeyemi',
+                                'email': 'billing@pinnacle-media.com',
+                                'phone': '+49 30 12345678',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Pinnacle Media GmbH',
+                            'iban': 'DE89370400440532013000',
+                            'bic': 'COBADEFFXXX',
+                        },
+                    },
+                },
+                {
+                    'description': 'US advertiser with EIN and domestic bank details',
+                    'data': {
+                        'legal_name': 'Acme Corporation',
+                        'tax_id': '12-3456789',
+                        'address': {
+                            'street': '123 Main St',
+                            'city': 'New York',
+                            'postal_code': '10001',
+                            'region': 'NY',
+                            'country': 'US',
+                        },
+                        'contacts': [
+                            {
+                                'role': 'billing',
+                                'name': 'AP Department',
+                                'email': 'ap@acme-corp.com',
+                            }
+                        ],
+                        'bank': {
+                            'account_holder': 'Acme Corporation',
+                            'routing_number': '021000021',
+                            'account_number': '123456789',
+                        },
+                    },
+                },
+            ],
+            title='Business Entity',
+        ),
+    ] = None
+    affected_packages: Annotated[
+        list[AffectedPackage] | None,
+        Field(description='Array of packages that were modified with complete state information'),
+    ] = None
+    valid_actions: Annotated[
+        list[ValidAction] | None,
+        Field(
+            description='Actions the buyer can perform after this update. Saves a round-trip to get_media_buys.'
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class UpdateMediaBuyResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error],
+        Field(description='Array of errors explaining why the operation failed', min_length=1),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+UpdateMediaBuyResponse = UpdateMediaBuyResponse3 | UpdateMediaBuyResponse4
diff --git a/src/adcp/types/generated_poc/bundled/property/__init__.py b/src/adcp/types/generated_poc/bundled/property/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/property/create_property_list_request.py b/src/adcp/types/generated_poc/bundled/property/create_property_list_request.py
new file mode 100644
index 000000000..35304734f
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/create_property_list_request.py
@@ -0,0 +1,371 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/create_property_list_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field, RootModel
+
+
+class Tag(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.',
+            examples=['ctv', 'premium', 'news', 'sports', 'meta_network', 'social_media'],
+            pattern='^[a-z0-9_]+$',
+            title='Property Tag',
+        ),
+    ]
+
+
+class BaseProperties1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_tags'],
+        Field(description='Discriminator indicating selection by property tags within a publisher'),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    tags: Annotated[
+        list[Tag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+            min_length=1,
+        ),
+    ]
+
+
+class PropertyId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.',
+            examples=['cnn_ctv_app', 'homepage', 'mobile_ios', 'instagram'],
+            pattern='^[a-z0-9_]+$',
+            title='Property ID',
+        ),
+    ]
+
+
+class BaseProperties2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_ids'],
+        Field(
+            description='Discriminator indicating selection by specific property IDs within a publisher'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    property_ids: Annotated[
+        list[PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class BaseProperties3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['identifiers'],
+        Field(description='Discriminator indicating selection by direct identifiers'),
+    ]
+    identifiers: Annotated[
+        list[Identifier],
+        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
+    ]
+
+
+class BaseProperties(RootModel[BaseProperties1 | BaseProperties2 | BaseProperties3]):
+    root: Annotated[
+        BaseProperties1 | BaseProperties2 | BaseProperties3,
+        Field(
+            description='A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.',
+            discriminator='selection_type',
+            title='Base Property Source',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class CountriesAllItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class PropertyType(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    linear_tv = 'linear_tv'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
+
+
+class IfNotCovered(Enum):
+    exclude = 'exclude'
+    include = 'include'
+
+
+class FeatureRequirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(description='Minimum numeric value required (for quantitative features)'),
+    ] = None
+    max_value: Annotated[
+        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
+    ] = None
+    allowed_values: Annotated[
+        list[Any] | None,
+        Field(
+            description='Values that pass the requirement (for binary/categorical features)',
+            min_length=1,
+        ),
+    ] = None
+    if_not_covered: Annotated[
+        IfNotCovered | None,
+        Field(
+            description="How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+        ),
+    ] = IfNotCovered.exclude
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
+    ] = None
+
+
+class ExcludeIdentifier(Identifier):
+    pass
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    countries_all: Annotated[
+        list[CountriesAllItem] | None,
+        Field(
+            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    property_types: Annotated[
+        list[PropertyType] | None, Field(description='Filter to these property types', min_length=1)
+    ] = None
+    feature_requirements: Annotated[
+        list[FeatureRequirement] | None,
+        Field(
+            description='Feature-based requirements. Property must pass ALL requirements (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    exclude_identifiers: Annotated[
+        list[ExcludeIdentifier] | None,
+        Field(description='Identifiers to always exclude from results', min_length=1),
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class CreatePropertyListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    base_properties: Annotated[
+        list[BaseProperties] | None,
+        Field(
+            description="Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
+            min_length=1,
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(
+            description='Dynamic filters to apply when resolving the list',
+            title='Property List Filters',
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference. When provided, the agent automatically applies appropriate rules based on brand characteristics (industry, target_audience, etc.). Resolved at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate property list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/create_property_list_response.py b/src/adcp/types/generated_poc/bundled/property/create_property_list_response.py
new file mode 100644
index 000000000..9a1b01380
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/create_property_list_response.py
@@ -0,0 +1,529 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/create_property_list_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class Tag(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.',
+            examples=['ctv', 'premium', 'news', 'sports', 'meta_network', 'social_media'],
+            pattern='^[a-z0-9_]+$',
+            title='Property Tag',
+        ),
+    ]
+
+
+class BaseProperties(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_tags'],
+        Field(description='Discriminator indicating selection by property tags within a publisher'),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    tags: Annotated[
+        list[Tag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+            min_length=1,
+        ),
+    ]
+
+
+class PropertyId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.',
+            examples=['cnn_ctv_app', 'homepage', 'mobile_ios', 'instagram'],
+            pattern='^[a-z0-9_]+$',
+            title='Property ID',
+        ),
+    ]
+
+
+class BaseProperties6(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_ids'],
+        Field(
+            description='Discriminator indicating selection by specific property IDs within a publisher'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    property_ids: Annotated[
+        list[PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class BaseProperties7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['identifiers'],
+        Field(description='Discriminator indicating selection by direct identifiers'),
+    ]
+    identifiers: Annotated[
+        list[Identifier],
+        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
+    ]
+
+
+class BaseProperties4(RootModel[BaseProperties | BaseProperties6 | BaseProperties7]):
+    root: Annotated[
+        BaseProperties | BaseProperties6 | BaseProperties7,
+        Field(
+            description='A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.',
+            discriminator='selection_type',
+            title='Base Property Source',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class CountriesAllItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class PropertyType(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    linear_tv = 'linear_tv'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
+
+
+class IfNotCovered(Enum):
+    exclude = 'exclude'
+    include = 'include'
+
+
+class FeatureRequirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(description='Minimum numeric value required (for quantitative features)'),
+    ] = None
+    max_value: Annotated[
+        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
+    ] = None
+    allowed_values: Annotated[
+        list[Any] | None,
+        Field(
+            description='Values that pass the requirement (for binary/categorical features)',
+            min_length=1,
+        ),
+    ] = None
+    if_not_covered: Annotated[
+        IfNotCovered | None,
+        Field(
+            description="How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+        ),
+    ] = IfNotCovered.exclude
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
+    ] = None
+
+
+class ExcludeIdentifier(Identifier):
+    pass
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    countries_all: Annotated[
+        list[CountriesAllItem] | None,
+        Field(
+            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    property_types: Annotated[
+        list[PropertyType] | None, Field(description='Filter to these property types', min_length=1)
+    ] = None
+    feature_requirements: Annotated[
+        list[FeatureRequirement] | None,
+        Field(
+            description='Feature-based requirements. Property must pass ALL requirements (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    exclude_identifiers: Annotated[
+        list[ExcludeIdentifier] | None,
+        Field(description='Identifiers to always exclude from results', min_length=1),
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class PricingOption1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption5(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption6(PricingOption1, PricingOption5):
+    pass
+
+
+class PricingOption7(PricingOption2, PricingOption5):
+    pass
+
+
+class PricingOption8(PricingOption3, PricingOption5):
+    pass
+
+
+class PricingOption9(PricingOption4, PricingOption5):
+    pass
+
+
+class PricingOption(RootModel[PricingOption6 | PricingOption7 | PricingOption8 | PricingOption9]):
+    root: Annotated[
+        PricingOption6 | PricingOption7 | PricingOption8 | PricingOption9,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class List(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list_id: Annotated[str, Field(description='Unique identifier for this property list')]
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    principal: Annotated[
+        str | None, Field(description='Principal identity that owns this list')
+    ] = None
+    base_properties: Annotated[
+        list[BaseProperties4] | None,
+        Field(
+            description="Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database."
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(
+            description='Dynamic filters applied when resolving the list',
+            title='Property List Filters',
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to receive notifications when the resolved list changes'),
+    ] = None
+    cache_duration_hours: Annotated[
+        int | None,
+        Field(
+            description='Recommended cache duration for resolved list. Consumers should re-fetch after this period.',
+            ge=1,
+        ),
+    ] = 24
+    created_at: Annotated[AwareDatetime | None, Field(description='When the list was created')] = (
+        None
+    )
+    updated_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was last modified')
+    ] = None
+    property_count: Annotated[
+        int | None,
+        Field(description='Number of properties in the resolved list (at time of last resolution)'),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class CreatePropertyListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list: Annotated[List, Field(description='The created property list', title='Property List')]
+    auth_token: Annotated[
+        str,
+        Field(
+            description='Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time.'
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/delete_property_list_request.py b/src/adcp/types/generated_poc/bundled/property/delete_property_list_request.py
new file mode 100644
index 000000000..9983a7d36
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/delete_property_list_request.py
@@ -0,0 +1,48 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/delete_property_list_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class DeletePropertyListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to delete')]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/bundled/property/delete_property_list_response.py b/src/adcp/types/generated_poc/bundled/property/delete_property_list_response.py
new file mode 100644
index 000000000..b8f25bde2
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/delete_property_list_response.py
@@ -0,0 +1,32 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/delete_property_list_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class DeletePropertyListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    deleted: Annotated[bool, Field(description='Whether the list was successfully deleted')]
+    list_id: Annotated[str, Field(description='ID of the deleted list')]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/get_property_list_request.py b/src/adcp/types/generated_poc/bundled/property/get_property_list_request.py
new file mode 100644
index 000000000..d235cd7a7
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/get_property_list_request.py
@@ -0,0 +1,65 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/get_property_list_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None,
+        Field(description='Maximum number of identifiers to return per page', ge=1, le=10000),
+    ] = 1000
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class GetPropertyListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to retrieve')]
+    resolve: Annotated[
+        bool | None,
+        Field(
+            description='Whether to apply filters and return resolved identifiers (default: true)'
+        ),
+    ] = True
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Pagination parameters. Uses higher limits than standard pagination because property lists can contain tens of thousands of identifiers.'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/get_property_list_response.py b/src/adcp/types/generated_poc/bundled/property/get_property_list_response.py
new file mode 100644
index 000000000..883a18dd2
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/get_property_list_response.py
@@ -0,0 +1,586 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/get_property_list_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class Tag(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.',
+            examples=['ctv', 'premium', 'news', 'sports', 'meta_network', 'social_media'],
+            pattern='^[a-z0-9_]+$',
+            title='Property Tag',
+        ),
+    ]
+
+
+class BaseProperties(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_tags'],
+        Field(description='Discriminator indicating selection by property tags within a publisher'),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    tags: Annotated[
+        list[Tag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+            min_length=1,
+        ),
+    ]
+
+
+class PropertyId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.',
+            examples=['cnn_ctv_app', 'homepage', 'mobile_ios', 'instagram'],
+            pattern='^[a-z0-9_]+$',
+            title='Property ID',
+        ),
+    ]
+
+
+class BaseProperties10(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_ids'],
+        Field(
+            description='Discriminator indicating selection by specific property IDs within a publisher'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    property_ids: Annotated[
+        list[PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class BaseProperties11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['identifiers'],
+        Field(description='Discriminator indicating selection by direct identifiers'),
+    ]
+    identifiers: Annotated[
+        list[Identifier],
+        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
+    ]
+
+
+class BaseProperties8(RootModel[BaseProperties | BaseProperties10 | BaseProperties11]):
+    root: Annotated[
+        BaseProperties | BaseProperties10 | BaseProperties11,
+        Field(
+            description='A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.',
+            discriminator='selection_type',
+            title='Base Property Source',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class CountriesAllItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class PropertyType(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    linear_tv = 'linear_tv'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
+
+
+class IfNotCovered(Enum):
+    exclude = 'exclude'
+    include = 'include'
+
+
+class FeatureRequirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(description='Minimum numeric value required (for quantitative features)'),
+    ] = None
+    max_value: Annotated[
+        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
+    ] = None
+    allowed_values: Annotated[
+        list[Any] | None,
+        Field(
+            description='Values that pass the requirement (for binary/categorical features)',
+            min_length=1,
+        ),
+    ] = None
+    if_not_covered: Annotated[
+        IfNotCovered | None,
+        Field(
+            description="How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+        ),
+    ] = IfNotCovered.exclude
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
+    ] = None
+
+
+class ExcludeIdentifier(Identifier):
+    pass
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    countries_all: Annotated[
+        list[CountriesAllItem] | None,
+        Field(
+            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    property_types: Annotated[
+        list[PropertyType] | None, Field(description='Filter to these property types', min_length=1)
+    ] = None
+    feature_requirements: Annotated[
+        list[FeatureRequirement] | None,
+        Field(
+            description='Feature-based requirements. Property must pass ALL requirements (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    exclude_identifiers: Annotated[
+        list[ExcludeIdentifier] | None,
+        Field(description='Identifiers to always exclude from results', min_length=1),
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class PricingOption111(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption112(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption113(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption114(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption115(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption116(PricingOption111, PricingOption115):
+    pass
+
+
+class PricingOption117(PricingOption112, PricingOption115):
+    pass
+
+
+class PricingOption118(PricingOption113, PricingOption115):
+    pass
+
+
+class PricingOption119(PricingOption114, PricingOption115):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption116 | PricingOption117 | PricingOption118 | PricingOption119]
+):
+    root: Annotated[
+        PricingOption116 | PricingOption117 | PricingOption118 | PricingOption119,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class List(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list_id: Annotated[str, Field(description='Unique identifier for this property list')]
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    principal: Annotated[
+        str | None, Field(description='Principal identity that owns this list')
+    ] = None
+    base_properties: Annotated[
+        list[BaseProperties8] | None,
+        Field(
+            description="Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database."
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(
+            description='Dynamic filters applied when resolving the list',
+            title='Property List Filters',
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to receive notifications when the resolved list changes'),
+    ] = None
+    cache_duration_hours: Annotated[
+        int | None,
+        Field(
+            description='Recommended cache duration for resolved list. Consumers should re-fetch after this period.',
+            ge=1,
+        ),
+    ] = 24
+    created_at: Annotated[AwareDatetime | None, Field(description='When the list was created')] = (
+        None
+    )
+    updated_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was last modified')
+    ] = None
+    property_count: Annotated[
+        int | None,
+        Field(description='Number of properties in the resolved list (at time of last resolution)'),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Identifier5(Identifier):
+    pass
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class CoverageGap(Identifier):
+    pass
+
+
+class GetPropertyListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list: Annotated[
+        List,
+        Field(description='The property list metadata (always returned)', title='Property List'),
+    ]
+    identifiers: Annotated[
+        list[Identifier5] | None,
+        Field(
+            description='Resolved identifiers that passed filters (if resolve=true). Cache these locally for real-time use.'
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    resolved_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was resolved')
+    ] = None
+    cache_valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Cache expiration timestamp. Re-fetch the list after this time to get updated identifiers.'
+        ),
+    ] = None
+    coverage_gaps: Annotated[
+        dict[str, list[CoverageGap]] | None,
+        Field(
+            description="Properties included in the list despite missing feature data. Only present when a feature_requirement has if_not_covered='include'. Maps feature_id to list of identifiers not covered for that feature."
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/list_property_lists_request.py b/src/adcp/types/generated_poc/bundled/property/list_property_lists_request.py
new file mode 100644
index 000000000..dcc45419d
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/list_property_lists_request.py
@@ -0,0 +1,64 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/list_property_lists_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class ListPropertyListsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    principal: Annotated[
+        str | None, Field(description='Filter to lists owned by this principal')
+    ] = None
+    name_contains: Annotated[
+        str | None, Field(description='Filter to lists whose name contains this string')
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/list_property_lists_response.py b/src/adcp/types/generated_poc/bundled/property/list_property_lists_response.py
new file mode 100644
index 000000000..ccec66b0b
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/list_property_lists_response.py
@@ -0,0 +1,557 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/list_property_lists_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class Tag(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.',
+            examples=['ctv', 'premium', 'news', 'sports', 'meta_network', 'social_media'],
+            pattern='^[a-z0-9_]+$',
+            title='Property Tag',
+        ),
+    ]
+
+
+class BaseProperties(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_tags'],
+        Field(description='Discriminator indicating selection by property tags within a publisher'),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    tags: Annotated[
+        list[Tag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+            min_length=1,
+        ),
+    ]
+
+
+class PropertyId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.',
+            examples=['cnn_ctv_app', 'homepage', 'mobile_ios', 'instagram'],
+            pattern='^[a-z0-9_]+$',
+            title='Property ID',
+        ),
+    ]
+
+
+class BaseProperties14(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_ids'],
+        Field(
+            description='Discriminator indicating selection by specific property IDs within a publisher'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    property_ids: Annotated[
+        list[PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class BaseProperties15(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['identifiers'],
+        Field(description='Discriminator indicating selection by direct identifiers'),
+    ]
+    identifiers: Annotated[
+        list[Identifier],
+        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
+    ]
+
+
+class BaseProperties12(RootModel[BaseProperties | BaseProperties14 | BaseProperties15]):
+    root: Annotated[
+        BaseProperties | BaseProperties14 | BaseProperties15,
+        Field(
+            description='A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.',
+            discriminator='selection_type',
+            title='Base Property Source',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class CountriesAllItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class PropertyType(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    linear_tv = 'linear_tv'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
+
+
+class IfNotCovered(Enum):
+    exclude = 'exclude'
+    include = 'include'
+
+
+class FeatureRequirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(description='Minimum numeric value required (for quantitative features)'),
+    ] = None
+    max_value: Annotated[
+        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
+    ] = None
+    allowed_values: Annotated[
+        list[Any] | None,
+        Field(
+            description='Values that pass the requirement (for binary/categorical features)',
+            min_length=1,
+        ),
+    ] = None
+    if_not_covered: Annotated[
+        IfNotCovered | None,
+        Field(
+            description="How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+        ),
+    ] = IfNotCovered.exclude
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
+    ] = None
+
+
+class ExcludeIdentifier(Identifier):
+    pass
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    countries_all: Annotated[
+        list[CountriesAllItem] | None,
+        Field(
+            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    property_types: Annotated[
+        list[PropertyType] | None, Field(description='Filter to these property types', min_length=1)
+    ] = None
+    feature_requirements: Annotated[
+        list[FeatureRequirement] | None,
+        Field(
+            description='Feature-based requirements. Property must pass ALL requirements (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    exclude_identifiers: Annotated[
+        list[ExcludeIdentifier] | None,
+        Field(description='Identifiers to always exclude from results', min_length=1),
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class PricingOption171(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption172(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption173(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption174(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption175(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption176(PricingOption171, PricingOption175):
+    pass
+
+
+class PricingOption177(PricingOption172, PricingOption175):
+    pass
+
+
+class PricingOption178(PricingOption173, PricingOption175):
+    pass
+
+
+class PricingOption179(PricingOption174, PricingOption175):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption176 | PricingOption177 | PricingOption178 | PricingOption179]
+):
+    root: Annotated[
+        PricingOption176 | PricingOption177 | PricingOption178 | PricingOption179,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class List(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list_id: Annotated[str, Field(description='Unique identifier for this property list')]
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    principal: Annotated[
+        str | None, Field(description='Principal identity that owns this list')
+    ] = None
+    base_properties: Annotated[
+        list[BaseProperties12] | None,
+        Field(
+            description="Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database."
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(
+            description='Dynamic filters applied when resolving the list',
+            title='Property List Filters',
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to receive notifications when the resolved list changes'),
+    ] = None
+    cache_duration_hours: Annotated[
+        int | None,
+        Field(
+            description='Recommended cache duration for resolved list. Consumers should re-fetch after this period.',
+            ge=1,
+        ),
+    ] = 24
+    created_at: Annotated[AwareDatetime | None, Field(description='When the list was created')] = (
+        None
+    )
+    updated_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was last modified')
+    ] = None
+    property_count: Annotated[
+        int | None,
+        Field(description='Number of properties in the resolved list (at time of last resolution)'),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class ListPropertyListsResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    lists: Annotated[
+        list[List],
+        Field(description='Array of property lists (metadata only, not resolved properties)'),
+    ]
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/update_property_list_request.py b/src/adcp/types/generated_poc/bundled/property/update_property_list_request.py
new file mode 100644
index 000000000..d119ac68e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/update_property_list_request.py
@@ -0,0 +1,375 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/update_property_list_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+
+class Tag(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.',
+            examples=['ctv', 'premium', 'news', 'sports', 'meta_network', 'social_media'],
+            pattern='^[a-z0-9_]+$',
+            title='Property Tag',
+        ),
+    ]
+
+
+class BaseProperties(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_tags'],
+        Field(description='Discriminator indicating selection by property tags within a publisher'),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    tags: Annotated[
+        list[Tag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+            min_length=1,
+        ),
+    ]
+
+
+class PropertyId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.',
+            examples=['cnn_ctv_app', 'homepage', 'mobile_ios', 'instagram'],
+            pattern='^[a-z0-9_]+$',
+            title='Property ID',
+        ),
+    ]
+
+
+class BaseProperties18(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_ids'],
+        Field(
+            description='Discriminator indicating selection by specific property IDs within a publisher'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    property_ids: Annotated[
+        list[PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class BaseProperties19(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['identifiers'],
+        Field(description='Discriminator indicating selection by direct identifiers'),
+    ]
+    identifiers: Annotated[
+        list[Identifier],
+        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
+    ]
+
+
+class BaseProperties16(RootModel[BaseProperties | BaseProperties18 | BaseProperties19]):
+    root: Annotated[
+        BaseProperties | BaseProperties18 | BaseProperties19,
+        Field(
+            description='A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.',
+            discriminator='selection_type',
+            title='Base Property Source',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class CountriesAllItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class PropertyType(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    linear_tv = 'linear_tv'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
+
+
+class IfNotCovered(Enum):
+    exclude = 'exclude'
+    include = 'include'
+
+
+class FeatureRequirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(description='Minimum numeric value required (for quantitative features)'),
+    ] = None
+    max_value: Annotated[
+        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
+    ] = None
+    allowed_values: Annotated[
+        list[Any] | None,
+        Field(
+            description='Values that pass the requirement (for binary/categorical features)',
+            min_length=1,
+        ),
+    ] = None
+    if_not_covered: Annotated[
+        IfNotCovered | None,
+        Field(
+            description="How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+        ),
+    ] = IfNotCovered.exclude
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
+    ] = None
+
+
+class ExcludeIdentifier(Identifier):
+    pass
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    countries_all: Annotated[
+        list[CountriesAllItem] | None,
+        Field(
+            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    property_types: Annotated[
+        list[PropertyType] | None, Field(description='Filter to these property types', min_length=1)
+    ] = None
+    feature_requirements: Annotated[
+        list[FeatureRequirement] | None,
+        Field(
+            description='Feature-based requirements. Property must pass ALL requirements (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    exclude_identifiers: Annotated[
+        list[ExcludeIdentifier] | None,
+        Field(description='Identifiers to always exclude from results', min_length=1),
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class UpdatePropertyListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to update')]
+    name: Annotated[str | None, Field(description='New name for the list')] = None
+    description: Annotated[str | None, Field(description='New description')] = None
+    base_properties: Annotated[
+        list[BaseProperties16] | None,
+        Field(
+            description='Complete replacement for the base properties list (not a patch). Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers).'
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(
+            description='Complete replacement for the filters (not a patch)',
+            title='Property List Filters',
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Update brand reference. Resolved to full brand identity at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Update the webhook URL for list change notifications (set to empty string to remove)'
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/bundled/property/update_property_list_response.py b/src/adcp/types/generated_poc/bundled/property/update_property_list_response.py
new file mode 100644
index 000000000..86996dd23
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/update_property_list_response.py
@@ -0,0 +1,525 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/update_property_list_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class Tag(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.',
+            examples=['ctv', 'premium', 'news', 'sports', 'meta_network', 'social_media'],
+            pattern='^[a-z0-9_]+$',
+            title='Property Tag',
+        ),
+    ]
+
+
+class BaseProperties(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_tags'],
+        Field(description='Discriminator indicating selection by property tags within a publisher'),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    tags: Annotated[
+        list[Tag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selects all properties with these tags.",
+            min_length=1,
+        ),
+    ]
+
+
+class PropertyId(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description='Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.',
+            examples=['cnn_ctv_app', 'homepage', 'mobile_ios', 'instagram'],
+            pattern='^[a-z0-9_]+$',
+            title='Property ID',
+        ),
+    ]
+
+
+class BaseProperties22(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_ids'],
+        Field(
+            description='Discriminator indicating selection by specific property IDs within a publisher'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted (e.g., 'raptive.com')",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    property_ids: Annotated[
+        list[PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class BaseProperties23(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['identifiers'],
+        Field(description='Discriminator indicating selection by direct identifiers'),
+    ]
+    identifiers: Annotated[
+        list[Identifier],
+        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
+    ]
+
+
+class BaseProperties20(RootModel[BaseProperties | BaseProperties22 | BaseProperties23]):
+    root: Annotated[
+        BaseProperties | BaseProperties22 | BaseProperties23,
+        Field(
+            description='A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.',
+            discriminator='selection_type',
+            title='Base Property Source',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class CountriesAllItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class ChannelsAnyEnum(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class PropertyType(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    linear_tv = 'linear_tv'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
+
+
+class IfNotCovered(Enum):
+    exclude = 'exclude'
+    include = 'include'
+
+
+class FeatureRequirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(description='Minimum numeric value required (for quantitative features)'),
+    ] = None
+    max_value: Annotated[
+        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
+    ] = None
+    allowed_values: Annotated[
+        list[Any] | None,
+        Field(
+            description='Values that pass the requirement (for binary/categorical features)',
+            min_length=1,
+        ),
+    ] = None
+    if_not_covered: Annotated[
+        IfNotCovered | None,
+        Field(
+            description="How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
+        ),
+    ] = IfNotCovered.exclude
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
+    ] = None
+
+
+class ExcludeIdentifier(Identifier):
+    pass
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    countries_all: Annotated[
+        list[CountriesAllItem] | None,
+        Field(
+            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    channels_any: Annotated[
+        list[ChannelsAnyEnum] | None,
+        Field(
+            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
+            min_length=1,
+        ),
+    ] = None
+    property_types: Annotated[
+        list[PropertyType] | None, Field(description='Filter to these property types', min_length=1)
+    ] = None
+    feature_requirements: Annotated[
+        list[FeatureRequirement] | None,
+        Field(
+            description='Feature-based requirements. Property must pass ALL requirements (AND logic).',
+            min_length=1,
+        ),
+    ] = None
+    exclude_identifiers: Annotated[
+        list[ExcludeIdentifier] | None,
+        Field(description='Identifiers to always exclude from results', min_length=1),
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class PricingOption181(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption182(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption183(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption184(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption185(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption186(PricingOption181, PricingOption185):
+    pass
+
+
+class PricingOption187(PricingOption182, PricingOption185):
+    pass
+
+
+class PricingOption188(PricingOption183, PricingOption185):
+    pass
+
+
+class PricingOption189(PricingOption184, PricingOption185):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption186 | PricingOption187 | PricingOption188 | PricingOption189]
+):
+    root: Annotated[
+        PricingOption186 | PricingOption187 | PricingOption188 | PricingOption189,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class List(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list_id: Annotated[str, Field(description='Unique identifier for this property list')]
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    principal: Annotated[
+        str | None, Field(description='Principal identity that owns this list')
+    ] = None
+    base_properties: Annotated[
+        list[BaseProperties20] | None,
+        Field(
+            description="Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database."
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(
+            description='Dynamic filters applied when resolving the list',
+            title='Property List Filters',
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to receive notifications when the resolved list changes'),
+    ] = None
+    cache_duration_hours: Annotated[
+        int | None,
+        Field(
+            description='Recommended cache duration for resolved list. Consumers should re-fetch after this period.',
+            ge=1,
+        ),
+    ] = 24
+    created_at: Annotated[AwareDatetime | None, Field(description='When the list was created')] = (
+        None
+    )
+    updated_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was last modified')
+    ] = None
+    property_count: Annotated[
+        int | None,
+        Field(description='Number of properties in the resolved list (at time of last resolution)'),
+    ] = None
+    pricing_options: Annotated[
+        list[PricingOption] | None,
+        Field(
+            description='Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class UpdatePropertyListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list: Annotated[List, Field(description='The updated property list', title='Property List')]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/validate_property_delivery_request.py b/src/adcp/types/generated_poc/bundled/property/validate_property_delivery_request.py
new file mode 100644
index 000000000..f1675c652
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/validate_property_delivery_request.py
@@ -0,0 +1,140 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/validate_property_delivery_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class Record(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    identifier: Annotated[
+        Identifier,
+        Field(
+            description='The property identifier where impressions were delivered',
+            title='Identifier',
+        ),
+    ]
+    impressions: Annotated[
+        int, Field(description='Number of impressions delivered to this identifier', ge=0)
+    ]
+    record_id: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided ID for correlating results back to source data'
+        ),
+    ] = None
+    sales_agent_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL of the sales agent that sold this inventory. If provided, authorization is validated against the property's adagents.json."
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ValidatePropertyDeliveryRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to validate against')]
+    records: Annotated[
+        list[Record],
+        Field(
+            description='Delivery records to validate. Each record represents impressions delivered to a property identifier.',
+            max_length=10000,
+            min_length=1,
+        ),
+    ]
+    include_compliant: Annotated[
+        bool | None,
+        Field(
+            description='Include compliant records in results (default: only return non_compliant, unmodeled, and unidentified)'
+        ),
+    ] = False
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/property/validate_property_delivery_response.py b/src/adcp/types/generated_poc/bundled/property/validate_property_delivery_response.py
new file mode 100644
index 000000000..66782527e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/property/validate_property_delivery_response.py
@@ -0,0 +1,330 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/property/validate_property_delivery_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+
+class Summary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    total_records: Annotated[int, Field(description='Total number of records validated')]
+    total_impressions: Annotated[int, Field(description='Total impressions across all records')]
+    compliant_records: Annotated[int, Field(description='Number of records with compliant status')]
+    compliant_impressions: Annotated[int, Field(description='Impressions from compliant records')]
+    non_compliant_records: Annotated[
+        int, Field(description='Number of records with non_compliant status')
+    ]
+    non_compliant_impressions: Annotated[
+        int, Field(description='Impressions from non_compliant records')
+    ]
+    not_covered_records: Annotated[
+        int,
+        Field(
+            description='Number of records where identifier was recognized but no data available'
+        ),
+    ]
+    not_covered_impressions: Annotated[
+        int, Field(description='Impressions from not_covered records')
+    ]
+    unidentified_records: Annotated[
+        int, Field(description='Number of records where identifier type was not resolvable')
+    ]
+    unidentified_impressions: Annotated[
+        int, Field(description='Impressions from unidentified records')
+    ]
+
+
+class Aggregate(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    score: Annotated[
+        float | None, Field(description='Numeric score (0-100 scale typical, but agent-defined)')
+    ] = None
+    grade: Annotated[
+        str | None,
+        Field(description="Letter grade or category (e.g., 'A+', 'B-', 'Gold', 'Compliant')"),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable summary (e.g., '85% compliant', 'High quality')"),
+    ] = None
+    methodology_url: Annotated[
+        AnyUrl | None, Field(description='URL explaining how this aggregate was calculated')
+    ] = None
+
+
+class AuthorizationSummary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    records_checked: Annotated[
+        int, Field(description='Number of records with sales_agent_url provided')
+    ]
+    impressions_checked: Annotated[
+        int, Field(description='Total impressions from records with sales_agent_url')
+    ]
+    authorized_records: Annotated[
+        int, Field(description='Number of records where sales agent was authorized')
+    ]
+    authorized_impressions: Annotated[int, Field(description='Impressions from authorized records')]
+    unauthorized_records: Annotated[
+        int, Field(description='Number of records where sales agent was NOT authorized')
+    ]
+    unauthorized_impressions: Annotated[
+        int, Field(description='Impressions from unauthorized records')
+    ]
+    unknown_records: Annotated[
+        int,
+        Field(
+            description='Number of records where authorization could not be determined (adagents.json unavailable)'
+        ),
+    ]
+    unknown_impressions: Annotated[
+        int,
+        Field(description='Impressions from records where authorization could not be determined'),
+    ]
+
+
+class Type(Enum):
+    domain = 'domain'
+    subdomain = 'subdomain'
+    network_id = 'network_id'
+    ios_bundle = 'ios_bundle'
+    android_package = 'android_package'
+    apple_app_store_id = 'apple_app_store_id'
+    google_play_id = 'google_play_id'
+    roku_store_id = 'roku_store_id'
+    fire_tv_asin = 'fire_tv_asin'
+    samsung_app_id = 'samsung_app_id'
+    apple_tv_bundle = 'apple_tv_bundle'
+    bundle_id = 'bundle_id'
+    venue_id = 'venue_id'
+    screen_id = 'screen_id'
+    openooh_venue_type = 'openooh_venue_type'
+    rss_url = 'rss_url'
+    apple_podcast_id = 'apple_podcast_id'
+    spotify_collection_id = 'spotify_collection_id'
+    podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description='Type of identifier',
+            examples=[
+                'domain',
+                'ios_bundle',
+                'venue_id',
+                'apple_podcast_id',
+                'station_id',
+                'facility_id',
+            ],
+            title='Property Identifier Types',
+        ),
+    ]
+    value: Annotated[
+        str,
+        Field(
+            description="The identifier value. For domain type: 'example.com' matches base domain plus www and m subdomains; 'edition.example.com' matches that specific subdomain; '*.example.com' matches ALL subdomains but NOT base domain"
+        ),
+    ]
+
+
+class Status(Enum):
+    compliant = 'compliant'
+    non_compliant = 'non_compliant'
+    not_covered = 'not_covered'
+    unidentified = 'unidentified'
+
+
+class Status48(Enum):
+    passed = 'passed'
+    failed = 'failed'
+    warning = 'warning'
+    unevaluated = 'unevaluated'
+
+
+class Requirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min_value: Annotated[float | None, Field(description='Minimum value that was required')] = None
+    max_value: Annotated[float | None, Field(description='Maximum value that was allowed')] = None
+    allowed_values: Annotated[
+        list[Any] | None, Field(description='Values that would have been acceptable')
+    ] = None
+
+
+class Feature(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str,
+        Field(
+            description="Which feature was evaluated. Data features come from the governance agent's feature catalog (e.g., 'mfa_score', 'carbon_score'). Record-level structural checks use reserved namespaces: 'record:list_membership', 'record:excluded', 'delivery:seller_authorization', 'delivery:click_url_presence'. Reserved prefixes: 'record:', 'delivery:'."
+        ),
+    ]
+    status: Status48
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Registry policy ID that triggered this result. Enables programmatic routing by looking up the policy in the registry.'
+        ),
+    ] = None
+    explanation: Annotated[
+        str | None, Field(description='Directional human-readable explanation of the result.')
+    ] = None
+    requirement: Annotated[
+        Requirement | None,
+        Field(
+            description='The feature requirement that was not met. MAY be present on failed features when the caller authored the requirement (e.g., feature_requirements on a property list). The buyer set these thresholds — echoing them back enables fix-and-retry loops without looking up the list definition.'
+        ),
+    ] = None
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+
+
+class Status49(Enum):
+    authorized = 'authorized'
+    unauthorized = 'unauthorized'
+    unknown = 'unknown'
+
+
+class Violation(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    code: Annotated[str, Field(description='Machine-readable violation code')]
+    message: Annotated[str, Field(description='Human-readable violation description')]
+
+
+class Authorization(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    status: Annotated[
+        Status49,
+        Field(
+            description='Authorization status: authorized (agent in adagents.json), unauthorized (agent not in adagents.json), unknown (could not fetch or parse adagents.json)'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str | None, Field(description='The publisher domain where adagents.json was checked')
+    ] = None
+    sales_agent_url: Annotated[
+        AnyUrl | None, Field(description='The sales agent URL that was validated')
+    ] = None
+    violation: Annotated[
+        Violation | None,
+        Field(
+            description='Details about the authorization failure (only present for unauthorized status)'
+        ),
+    ] = None
+
+
+class Result(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    identifier: Annotated[
+        Identifier, Field(description='The identifier that was validated', title='Identifier')
+    ]
+    record_id: Annotated[
+        str | None, Field(description='Client-provided ID from the delivery record (if provided)')
+    ] = None
+    status: Annotated[
+        Status,
+        Field(
+            description='Validation status: compliant (in list), non_compliant (not in list), not_covered (identifier recognized but no data available), unidentified (identifier type not resolvable by this governance agent)'
+        ),
+    ]
+    impressions: Annotated[int, Field(description='Number of impressions from this record', ge=0)]
+    features: Annotated[
+        list[Feature] | None,
+        Field(
+            description='Per-feature breakdown for this record. SHOULD include all failed and warning features. MAY include passed features. For property validation the buyer authored the requirement, so the `requirement` that was not met MAY be echoed back on failures — this is contract data, not evaluator IP.'
+        ),
+    ] = None
+    authorization: Annotated[
+        Authorization | None,
+        Field(
+            description='Authorization validation result (only present if sales_agent_url was provided in the delivery record)',
+            title='Authorization Result',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class ValidatePropertyDeliveryResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list_id: Annotated[str, Field(description='ID of the property list validated against')]
+    summary: Annotated[Summary, Field(description='Aggregate validation statistics')]
+    aggregate: Annotated[
+        Aggregate | None,
+        Field(
+            description='Optional aggregate measurements computed by the governance agent. Format and meaning are agent-specific.'
+        ),
+    ] = None
+    authorization_summary: Annotated[
+        AuthorizationSummary | None,
+        Field(
+            description='Aggregate authorization statistics. Only present if any records included sales_agent_url.'
+        ),
+    ] = None
+    results: Annotated[
+        list[Result],
+        Field(
+            description='Per-record validation results. By default only includes non_compliant and unknown records. Set include_compliant=true to include all records.'
+        ),
+    ]
+    validated_at: Annotated[
+        AwareDatetime, Field(description='Timestamp when validation was performed')
+    ]
+    list_resolved_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp of the property list resolution used for validation'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/protocol/__init__.py b/src/adcp/types/generated_poc/bundled/protocol/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/protocol/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/protocol/get_adcp_capabilities_request.py b/src/adcp/types/generated_poc/bundled/protocol/get_adcp_capabilities_request.py
new file mode 100644
index 000000000..d4cbd3513
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/protocol/get_adcp_capabilities_request.py
@@ -0,0 +1,54 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/protocol/get_adcp_capabilities_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Protocol(Enum):
+    media_buy = 'media_buy'
+    signals = 'signals'
+    governance = 'governance'
+    sponsored_intelligence = 'sponsored_intelligence'
+    creative = 'creative'
+
+
+class GetAdcpCapabilitiesRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. When provided, the seller validates this against its supported major_versions and returns VERSION_UNSUPPORTED if the version is not in range. When omitted, the seller assumes the highest major version it supports.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    protocols: Annotated[
+        list[Protocol] | None,
+        Field(
+            description='Specific protocols to query capabilities for. If omitted, returns capabilities for all supported protocols.',
+            min_length=1,
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/protocol/get_adcp_capabilities_response.py b/src/adcp/types/generated_poc/bundled/protocol/get_adcp_capabilities_response.py
new file mode 100644
index 000000000..6bc5dd63e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/protocol/get_adcp_capabilities_response.py
@@ -0,0 +1,1287 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/protocol/get_adcp_capabilities_response.json
+#   timestamp: 2026-04-18T21:01:10+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class MajorVersion(RootModel[int]):
+    root: Annotated[int, Field(ge=1)]
+
+
+class Idempotency(AdCPBaseModel):
+    replay_ttl_seconds: Annotated[
+        int,
+        Field(
+            description="How long the seller retains a canonical response for an idempotency_key. Within this window, a replay with the same key + equivalent canonical payload returns the cached response; a replay with a different canonical payload returns IDEMPOTENCY_CONFLICT; a replay past the window returns IDEMPOTENCY_EXPIRED when the seller can still distinguish 'seen and evicted' from 'never seen'. Minimum 3600 (1h); recommended 86400 (24h). Maximum 604800 (7 days) — longer windows force buyers to retain secret keys at rest for extended periods and grow the seller's cache table without bounded benefit.",
+            ge=3600,
+            le=604800,
+        ),
+    ]
+
+
+class Adcp(AdCPBaseModel):
+    major_versions: Annotated[
+        list[MajorVersion],
+        Field(
+            description='AdCP major versions supported by this seller. Major versions indicate breaking changes. When multiple versions are listed, the buyer declares its version via the adcp_major_version field on requests.',
+            min_length=1,
+        ),
+    ]
+    idempotency: Annotated[
+        Idempotency,
+        Field(
+            description='Idempotency semantics for mutating requests. Sellers MUST declare their replay window so buyers can reason about safe retry behavior. Clients MUST NOT assume a default — a seller without this declaration is non-compliant and should be treated as unsafe for retry-sensitive operations.'
+        ),
+    ]
+
+
+class SupportedProtocol(Enum):
+    media_buy = 'media_buy'
+    signals = 'signals'
+    governance = 'governance'
+    sponsored_intelligence = 'sponsored_intelligence'
+    creative = 'creative'
+    brand = 'brand'
+
+
+class SupportedBillingEnum(Enum):
+    operator = 'operator'
+    agent = 'agent'
+    advertiser = 'advertiser'
+
+
+class Account(AdCPBaseModel):
+    require_operator_auth: Annotated[
+        bool | None,
+        Field(
+            description="Whether the seller requires operator-level credentials. When true (explicit accounts), operators authenticate independently with the seller and the buyer discovers accounts via list_accounts. When false (default, implicit accounts), the seller trusts the agent's identity claims — the agent authenticates once and declares brands/operators via sync_accounts."
+        ),
+    ] = False
+    authorization_endpoint: Annotated[
+        AnyUrl | None,
+        Field(
+            description='OAuth authorization endpoint for obtaining operator-level credentials. Present when the seller supports OAuth for operator authentication. The agent directs the operator to this URL to authenticate and obtain a bearer token. If absent and require_operator_auth is true, operators obtain credentials out-of-band (e.g., seller portal, API key).'
+        ),
+    ] = None
+    supported_billing: Annotated[
+        list[SupportedBillingEnum],
+        Field(
+            description='Billing models this seller supports. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The buyer must pass one of these values in sync_accounts.',
+            min_length=1,
+        ),
+    ]
+    required_for_products: Annotated[
+        bool | None,
+        Field(
+            description='Whether an account reference is required for get_products. When true, the buyer must establish an account before browsing products. When false (default), the buyer can browse products without an account — useful for price comparison and discovery before committing to a seller.'
+        ),
+    ] = False
+    account_financials: Annotated[
+        bool | None,
+        Field(
+            description='Whether this seller supports the get_account_financials task for querying account-level financial status (spend, credit, invoices). Only applicable to operator-billed accounts.'
+        ),
+    ] = False
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='Whether this seller supports sandbox accounts for testing. Buyers can provision a sandbox account via sync_accounts with sandbox: true, and all requests using that account_id will be treated as sandbox — no real platform calls or spend.'
+        ),
+    ] = False
+
+
+class SupportedPricingModel(Enum):
+    cpm = 'cpm'
+    vcpm = 'vcpm'
+    cpc = 'cpc'
+    cpcv = 'cpcv'
+    cpv = 'cpv'
+    cpp = 'cpp'
+    cpa = 'cpa'
+    flat_rate = 'flat_rate'
+    time = 'time'
+
+
+class ReportingDeliveryMethod(Enum):
+    webhook = 'webhook'
+    offline = 'offline'
+
+
+class OfflineDeliveryProtocol(Enum):
+    s3 = 's3'
+    gcs = 'gcs'
+    azure_blob = 'azure_blob'
+
+
+class Features(AdCPBaseModel):
+    inline_creative_management: Annotated[
+        bool | None,
+        Field(description='Supports creatives provided inline in create_media_buy requests'),
+    ] = None
+    property_list_filtering: Annotated[
+        bool | None,
+        Field(
+            description='Honors property_list parameter in get_products to filter results to buyer-approved properties'
+        ),
+    ] = None
+    catalog_management: Annotated[
+        bool | None,
+        Field(
+            description='Supports sync_catalogs task for catalog feed management with platform review and approval'
+        ),
+    ] = None
+
+
+class Surface(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
+
+
+class TrustedMatch(AdCPBaseModel):
+    surfaces: Annotated[
+        list[Surface] | None, Field(description='Surface types this seller supports via TMP.')
+    ] = None
+
+
+class VastVersion(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]+\\.[0-9]+$')]
+
+
+class MraidVersion(VastVersion):
+    pass
+
+
+class CreativeSpecs(AdCPBaseModel):
+    vast_versions: Annotated[
+        list[VastVersion] | None, Field(description='VAST versions supported for video creatives')
+    ] = None
+    mraid_versions: Annotated[
+        list[MraidVersion] | None,
+        Field(description='MRAID versions supported for rich media mobile creatives'),
+    ] = None
+    vpaid: Annotated[bool | None, Field(description='VPAID support for interactive video ads')] = (
+        None
+    )
+    simid: Annotated[bool | None, Field(description='SIMID support for interactive video ads')] = (
+        None
+    )
+
+
+class GeoMetros(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    nielsen_dma: bool | None = None
+    uk_itl1: bool | None = None
+    uk_itl2: bool | None = None
+    eurostat_nuts2: bool | None = None
+
+
+class GeoPostalAreas(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    us_zip: bool | None = None
+    us_zip_plus_four: bool | None = None
+    gb_outward: bool | None = None
+    gb_full: bool | None = None
+    ca_fsa: bool | None = None
+    ca_full: bool | None = None
+    de_plz: bool | None = None
+    fr_code_postal: bool | None = None
+    au_postcode: bool | None = None
+    ch_plz: bool | None = None
+    at_plz: bool | None = None
+
+
+class VerificationMethod(Enum):
+    facial_age_estimation = 'facial_age_estimation'
+    id_document = 'id_document'
+    digital_id = 'digital_id'
+    credit_card = 'credit_card'
+    world_id = 'world_id'
+
+
+class AgeRestriction(AdCPBaseModel):
+    supported: Annotated[
+        bool | None, Field(description='Whether seller supports age restrictions')
+    ] = None
+    verification_methods: Annotated[
+        list[VerificationMethod] | None,
+        Field(description='Age verification methods this seller supports'),
+    ] = None
+
+
+class SupportedMatchType(Enum):
+    broad = 'broad'
+    phrase = 'phrase'
+    exact = 'exact'
+
+
+class KeywordTargets(AdCPBaseModel):
+    supported_match_types: Annotated[
+        list[SupportedMatchType],
+        Field(
+            description='Match types this seller supports for keyword targets. Sellers must reject goals with unsupported match types.',
+            min_length=1,
+        ),
+    ]
+
+
+class NegativeKeywords(AdCPBaseModel):
+    supported_match_types: Annotated[
+        list[SupportedMatchType],
+        Field(
+            description='Match types this seller supports for negative keywords. Sellers must reject goals with unsupported match types.',
+            min_length=1,
+        ),
+    ]
+
+
+class TransportMode(Enum):
+    walking = 'walking'
+    cycling = 'cycling'
+    driving = 'driving'
+    public_transport = 'public_transport'
+
+
+class GeoProximity(AdCPBaseModel):
+    radius: Annotated[
+        bool | None,
+        Field(
+            description='Whether seller supports simple radius targeting (distance circle from a point)'
+        ),
+    ] = None
+    travel_time: Annotated[
+        bool | None,
+        Field(
+            description='Whether seller supports travel time isochrone targeting (requires a routing engine)'
+        ),
+    ] = None
+    geometry: Annotated[
+        bool | None,
+        Field(
+            description='Whether seller supports pre-computed GeoJSON geometry (buyer provides the polygon)'
+        ),
+    ] = None
+    transport_modes: Annotated[
+        list[TransportMode] | None,
+        Field(
+            description='Transport modes supported for travel_time isochrones. Only relevant when travel_time is true.',
+            min_length=1,
+        ),
+    ] = None
+
+
+class Targeting(AdCPBaseModel):
+    geo_countries: Annotated[
+        bool | None, Field(description='Country-level targeting using ISO 3166-1 alpha-2 codes')
+    ] = None
+    geo_regions: Annotated[
+        bool | None,
+        Field(
+            description='Region/state-level targeting using ISO 3166-2 codes (e.g., US-NY, GB-SCT)'
+        ),
+    ] = None
+    geo_metros: Annotated[
+        GeoMetros | None,
+        Field(
+            description='Metro area targeting. Properties indicate which classification systems are supported.'
+        ),
+    ] = None
+    geo_postal_areas: Annotated[
+        GeoPostalAreas | None,
+        Field(
+            description='Postal area targeting. Properties indicate which postal code systems are supported.'
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(description='Age restriction capabilities for compliance (alcohol, gambling)'),
+    ] = None
+    language: Annotated[
+        bool | None,
+        Field(description='Whether seller supports language targeting (ISO 639-1 codes)'),
+    ] = None
+    keyword_targets: Annotated[
+        KeywordTargets | None,
+        Field(
+            description='Keyword targeting capabilities. Presence indicates support for targeting_overlay.keyword_targets and keyword_targets_add/remove in update_media_buy.'
+        ),
+    ] = None
+    negative_keywords: Annotated[
+        NegativeKeywords | None,
+        Field(
+            description='Negative keyword capabilities. Presence indicates support for targeting_overlay.negative_keywords and negative_keywords_add/remove in update_media_buy.'
+        ),
+    ] = None
+    geo_proximity: Annotated[
+        GeoProximity | None,
+        Field(
+            description='Proximity targeting capabilities from arbitrary coordinates via targeting_overlay.geo_proximity.'
+        ),
+    ] = None
+
+
+class Execution(AdCPBaseModel):
+    trusted_match: Annotated[
+        TrustedMatch | None,
+        Field(
+            description='Trusted Match Protocol (TMP) support. Presence of this object indicates the seller has TMP infrastructure deployed. Check individual products via get_products for per-product TMP capabilities.'
+        ),
+    ] = None
+    axe_integrations: Annotated[
+        list[AnyUrl] | None,
+        Field(
+            description='Deprecated. Legacy AXE integrations. Use trusted_match for new integrations.'
+        ),
+    ] = None
+    creative_specs: Annotated[
+        CreativeSpecs | None, Field(description='Creative specification support')
+    ] = None
+    targeting: Annotated[
+        Targeting | None,
+        Field(
+            description='Targeting capabilities. If declared true/supported, buyer can use these targeting parameters and seller MUST honor them.'
+        ),
+    ] = None
+
+
+class SupportedIdentifierType(Enum):
+    hashed_email = 'hashed_email'
+    hashed_phone = 'hashed_phone'
+
+
+class SupportedUidType(Enum):
+    rampid = 'rampid'
+    rampid_derived = 'rampid_derived'
+    id5 = 'id5'
+    uid2 = 'uid2'
+    euid = 'euid'
+    pairid = 'pairid'
+    maid = 'maid'
+    hashed_email = 'hashed_email'
+    publisher_first_party = 'publisher_first_party'
+    other = 'other'
+
+
+class MatchingLatencyHours(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[int | None, Field(ge=0)] = None
+    max: Annotated[int | None, Field(ge=0)] = None
+
+
+class AudienceTargeting(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supported_identifier_types: Annotated[
+        list[SupportedIdentifierType],
+        Field(
+            description='PII-derived identifier types accepted for audience matching. Buyers should only send identifiers the seller supports.',
+            min_length=1,
+        ),
+    ]
+    supports_platform_customer_id: Annotated[
+        bool | None,
+        Field(
+            description="Whether the seller accepts the buyer's CRM/loyalty ID as a matchable identifier. Only applicable when the seller operates a closed ecosystem with a shared ID namespace (e.g., a retailer matching against their loyalty program). When true, buyers can include platform_customer_id values in AudienceMember.identifiers for matching against the seller's identity graph. Reporting on matched platform_customer_ids typically requires a clean room or the seller's own reporting surface."
+        ),
+    ] = None
+    supported_uid_types: Annotated[
+        list[SupportedUidType] | None,
+        Field(
+            description='Universal ID types accepted for audience matching (MAIDs, RampID, UID2, etc.). MAID support varies significantly by platform — check this field before sending uids with type: maid.',
+            min_length=1,
+        ),
+    ] = None
+    minimum_audience_size: Annotated[
+        int,
+        Field(
+            description='Minimum matched audience size required for targeting. Audiences below this threshold will have status: too_small. Varies by platform (100–1000 is typical).',
+            ge=1,
+        ),
+    ]
+    matching_latency_hours: Annotated[
+        MatchingLatencyHours | None,
+        Field(
+            description='Expected matching latency range in hours after upload. Use to calibrate polling cadence and set appropriate expectations before configuring push_notification_config.'
+        ),
+    ] = None
+
+
+class SupportedEventType(Enum):
+    page_view = 'page_view'
+    view_content = 'view_content'
+    select_content = 'select_content'
+    select_item = 'select_item'
+    search = 'search'
+    share = 'share'
+    add_to_cart = 'add_to_cart'
+    remove_from_cart = 'remove_from_cart'
+    viewed_cart = 'viewed_cart'
+    add_to_wishlist = 'add_to_wishlist'
+    initiate_checkout = 'initiate_checkout'
+    add_payment_info = 'add_payment_info'
+    purchase = 'purchase'
+    refund = 'refund'
+    lead = 'lead'
+    qualify_lead = 'qualify_lead'
+    close_convert_lead = 'close_convert_lead'
+    disqualify_lead = 'disqualify_lead'
+    complete_registration = 'complete_registration'
+    subscribe = 'subscribe'
+    start_trial = 'start_trial'
+    app_install = 'app_install'
+    app_launch = 'app_launch'
+    contact = 'contact'
+    schedule = 'schedule'
+    donate = 'donate'
+    submit_application = 'submit_application'
+    custom = 'custom'
+
+
+class SupportedActionSource(Enum):
+    website = 'website'
+    app = 'app'
+    offline = 'offline'
+    phone_call = 'phone_call'
+    chat = 'chat'
+    email = 'email'
+    in_store = 'in_store'
+    system_generated = 'system_generated'
+    other = 'other'
+
+
+class Unit(Enum):
+    seconds = 'seconds'
+    minutes = 'minutes'
+    hours = 'hours'
+    days = 'days'
+    campaign = 'campaign'
+
+
+class PostClickItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    interval: Annotated[
+        int, Field(description="Number of time units. Must be 1 when unit is 'campaign'.", ge=1)
+    ]
+    unit: Annotated[
+        Unit,
+        Field(
+            description="Time unit. 'seconds' for sub-minute precision. 'campaign' spans the full campaign flight."
+        ),
+    ]
+
+
+class PostViewItem(PostClickItem):
+    pass
+
+
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_type: Annotated[
+        SupportedEventType | None,
+        Field(
+            description='Event type this window applies to, or omit for default window',
+            title='Event Type',
+        ),
+    ] = None
+    post_click: Annotated[
+        list[PostClickItem],
+        Field(
+            description='Available post-click attribution windows (e.g. [{"interval": 7, "unit": "days"}])',
+            min_length=1,
+        ),
+    ]
+    post_view: Annotated[
+        list[PostViewItem] | None,
+        Field(
+            description='Available post-view attribution windows (e.g. [{"interval": 1, "unit": "days"}])',
+            min_length=1,
+        ),
+    ] = None
+
+
+class ConversionTracking(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    multi_source_event_dedup: Annotated[
+        bool | None,
+        Field(
+            description='Whether this seller can deduplicate conversion events across multiple event sources within a single goal. When true, the seller honors the deduplication semantics in optimization_goals event_sources arrays — the same event_id from multiple sources counts once. When false or absent, buyers should use a single event source per goal; multi-source arrays will be treated as first-source-wins. Most social platforms cannot deduplicate across independently-managed pixel and CAPI sources.'
+        ),
+    ] = None
+    supported_event_types: Annotated[
+        list[SupportedEventType] | None,
+        Field(
+            description='Event types this seller can track and attribute. If omitted, all standard event types are supported.',
+            min_length=1,
+        ),
+    ] = None
+    supported_uid_types: Annotated[
+        list[SupportedUidType] | None,
+        Field(description='Universal ID types accepted for user matching', min_length=1),
+    ] = None
+    supported_hashed_identifiers: Annotated[
+        list[SupportedIdentifierType] | None,
+        Field(
+            description='Hashed PII types accepted for user matching. Buyers must hash before sending (SHA-256, normalized).',
+            min_length=1,
+        ),
+    ] = None
+    supported_action_sources: Annotated[
+        list[SupportedActionSource] | None,
+        Field(description='Action sources this seller accepts events from', min_length=1),
+    ] = None
+    attribution_windows: Annotated[
+        list[AttributionWindow] | None,
+        Field(
+            description='Attribution windows available from this seller. Single-element arrays indicate fixed windows; multi-element arrays indicate configurable options the buyer can choose from via attribution_window on optimization goals.'
+        ),
+    ] = None
+
+
+class SupportedChannel(Enum):
+    display = 'display'
+    olv = 'olv'
+    social = 'social'
+    search = 'search'
+    ctv = 'ctv'
+    linear_tv = 'linear_tv'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    podcast = 'podcast'
+    dooh = 'dooh'
+    ooh = 'ooh'
+    print = 'print'
+    cinema = 'cinema'
+    email = 'email'
+    gaming = 'gaming'
+    retail_media = 'retail_media'
+    influencer = 'influencer'
+    affiliate = 'affiliate'
+    product_placement = 'product_placement'
+    sponsored_intelligence = 'sponsored_intelligence'
+
+
+class ContentStandards(AdCPBaseModel):
+    supports_local_evaluation: Annotated[
+        bool | None,
+        Field(
+            description="Whether the seller runs a local evaluation model. When false, all artifacts will have local_verdict: 'unevaluated' and the failures_only filter on get_media_buy_artifacts is not useful."
+        ),
+    ] = None
+    supported_channels: Annotated[
+        list[SupportedChannel] | None,
+        Field(
+            description='Channels for which the seller can provide content artifacts. Helps buyers understand which parts of a mixed-channel buy will have content standards coverage.',
+            min_length=1,
+        ),
+    ] = None
+    supports_webhook_delivery: Annotated[
+        bool | None,
+        Field(
+            description='Whether the seller supports push-based artifact delivery via artifact_webhook configured at buy creation time.'
+        ),
+    ] = None
+
+
+class PublisherDomain(RootModel[str]):
+    root: Annotated[
+        str, Field(pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$')
+    ]
+
+
+class PrimaryCountry(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class Portfolio(AdCPBaseModel):
+    publisher_domains: Annotated[
+        list[PublisherDomain],
+        Field(
+            description="Publisher domains this seller is authorized to represent. Buyers should fetch each publisher's adagents.json for property definitions.",
+            min_length=1,
+        ),
+    ]
+    primary_channels: Annotated[
+        list[SupportedChannel] | None,
+        Field(description='Primary advertising channels in this portfolio'),
+    ] = None
+    primary_countries: Annotated[
+        list[PrimaryCountry] | None,
+        Field(description='Primary countries (ISO 3166-1 alpha-2) where inventory is concentrated'),
+    ] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description='Markdown-formatted description of the inventory portfolio', max_length=5000
+        ),
+    ] = None
+    advertising_policies: Annotated[
+        str | None,
+        Field(
+            description='Advertising content policies, restrictions, and guidelines',
+            max_length=10000,
+        ),
+    ] = None
+
+
+class MediaBuy(AdCPBaseModel):
+    supported_pricing_models: Annotated[
+        list[SupportedPricingModel] | None,
+        Field(
+            description='Pricing models this seller supports across its product portfolio. Buyers can use this for pre-flight filtering before querying individual products. Individual products may support a subset of these models.',
+            min_length=1,
+        ),
+    ] = None
+    reporting_delivery_methods: Annotated[
+        list[ReportingDeliveryMethod] | None,
+        Field(
+            description="How this seller delivers reporting data to buyers. Polling via get_media_buy_delivery is always available as a baseline regardless of this field. This array declares additional push-based delivery methods the seller supports. 'webhook': seller pushes to buyer-provided URL (configured per buy via reporting_webhook). 'offline': seller pushes batch files to a cloud storage bucket (seller-provisioned per account via reporting_bucket on the account object). When absent, only polling is available.",
+            min_length=1,
+        ),
+    ] = None
+    offline_delivery_protocols: Annotated[
+        list[OfflineDeliveryProtocol] | None,
+        Field(
+            description="Cloud storage protocols this seller supports for offline file delivery. Only meaningful when reporting_delivery_methods includes 'offline'. Buyers express a protocol preference in sync_accounts; the seller provisions the account's reporting_bucket using a supported protocol.",
+            min_length=1,
+        ),
+    ] = None
+    features: Annotated[
+        Features | None,
+        Field(
+            description='Optional media-buy protocol features. Used in capability declarations (seller declares support) and product filters (buyer requires support). If a seller declares a feature as true, they MUST honor requests using that feature.',
+            title='Media Buy Features',
+        ),
+    ] = None
+    execution: Annotated[
+        Execution | None, Field(description='Technical execution capabilities for media buying')
+    ] = None
+    audience_targeting: Annotated[
+        AudienceTargeting | None,
+        Field(
+            description='Audience targeting capabilities. Presence of this object indicates the seller supports audience targeting, including sync_audiences and audience_include/audience_exclude in targeting overlays.'
+        ),
+    ] = None
+    conversion_tracking: Annotated[
+        ConversionTracking | None,
+        Field(
+            description='Seller-level conversion tracking capabilities. Presence of this object indicates the seller supports sync_event_sources and log_event for conversion event tracking.'
+        ),
+    ] = None
+    content_standards: Annotated[
+        ContentStandards | None,
+        Field(
+            description='Content standards implementation details. Presence of this object indicates the seller supports content_standards configuration including sampling rates and category filtering. Gives buyers pre-buy visibility into local evaluation and artifact delivery capabilities.'
+        ),
+    ] = None
+    portfolio: Annotated[
+        Portfolio | None,
+        Field(
+            description="Information about the seller's media inventory portfolio. Expected for media_buy sellers — buyers use this to understand inventory coverage and verify authorization via adagents.json."
+        ),
+    ] = None
+
+
+class DataProviderDomain(PublisherDomain):
+    pass
+
+
+class Features2(AdCPBaseModel):
+    catalog_signals: Annotated[
+        bool | None,
+        Field(
+            description='Supports signals from data provider catalogs with structured signal_id references'
+        ),
+    ] = None
+
+
+class Signals(AdCPBaseModel):
+    data_provider_domains: Annotated[
+        list[DataProviderDomain] | None,
+        Field(
+            description="Data provider domains this signals agent is authorized to resell. Buyers should fetch each data provider's adagents.json for signal catalog definitions and to verify authorization.",
+            min_length=1,
+        ),
+    ] = None
+    features: Annotated[
+        Features2 | None, Field(description='Optional signals features supported')
+    ] = None
+
+
+class Type(Enum):
+    binary = 'binary'
+    quantitative = 'quantitative'
+    categorical = 'categorical'
+
+
+class Range(AdCPBaseModel):
+    min: Annotated[float, Field(description='Minimum value')]
+    max: Annotated[float, Field(description='Maximum value')]
+
+
+class PropertyFeature(AdCPBaseModel):
+    feature_id: Annotated[
+        str,
+        Field(
+            description="Unique identifier for this feature (e.g., 'consent_quality', 'coppa_certified', 'carbon_score')"
+        ),
+    ]
+    type: Annotated[
+        Type,
+        Field(
+            description="Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+        ),
+    ]
+    range: Annotated[
+        Range | None, Field(description='For quantitative features, the valid range')
+    ] = None
+    categories: Annotated[
+        list[str] | None, Field(description='For categorical features, the valid values')
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Human-readable description of what this feature measures')
+    ] = None
+    methodology_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to documentation explaining how this feature is calculated or measured. Helps buyers understand and compare methodologies across vendors.'
+        ),
+    ] = None
+
+
+class CreativeFeature(AdCPBaseModel):
+    feature_id: Annotated[
+        str,
+        Field(
+            description="Unique identifier for this feature (e.g., 'auto_redirect', 'brand_consistency', 'iab_casinos_gambling')"
+        ),
+    ]
+    type: Annotated[
+        Type,
+        Field(
+            description="Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+        ),
+    ]
+    range: Annotated[
+        Range | None, Field(description='For quantitative features, the valid range')
+    ] = None
+    categories: Annotated[
+        list[str] | None, Field(description='For categorical features, the valid values')
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Human-readable description of what this feature measures')
+    ] = None
+    methodology_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to documentation explaining how this feature is calculated or measured.'
+        ),
+    ] = None
+
+
+class Governance(AdCPBaseModel):
+    property_features: Annotated[
+        list[PropertyFeature] | None,
+        Field(
+            description='Property features this governance agent can evaluate. Each feature describes a score, rating, or certification the agent can provide for properties.'
+        ),
+    ] = None
+    creative_features: Annotated[
+        list[CreativeFeature] | None,
+        Field(
+            description='Creative features this governance agent can evaluate. Each feature describes a score, rating, or assessment the agent can provide for creatives (e.g., security scanning, creative quality, content categorization).'
+        ),
+    ] = None
+
+
+class Type31(Enum):
+    mcp = 'mcp'
+    a2a = 'a2a'
+
+
+class Transport(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Type31, Field(description='Protocol transport type')]
+    url: Annotated[AnyUrl, Field(description='Agent endpoint URL for this transport')]
+
+
+class Endpoint(AdCPBaseModel):
+    transports: Annotated[
+        list[Transport],
+        Field(
+            description='Available protocol transports. Hosts select based on their capabilities.',
+            min_length=1,
+        ),
+    ]
+    preferred: Annotated[
+        Type31 | None, Field(description='Preferred transport when host supports multiple')
+    ] = None
+
+
+class Voice(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: Annotated[
+        str | None, Field(description='TTS provider (elevenlabs, openai, etc.)')
+    ] = None
+    voice_id: Annotated[str | None, Field(description='Brand voice identifier')] = None
+
+
+class Video(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    formats: Annotated[
+        list[str] | None, Field(description='Supported video formats (mp4, webm, etc.)')
+    ] = None
+    max_duration_seconds: Annotated[int | None, Field(description='Maximum video duration')] = None
+
+
+class Avatar(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: Annotated[
+        str | None, Field(description='Avatar provider (d-id, heygen, synthesia, etc.)')
+    ] = None
+    avatar_id: Annotated[str | None, Field(description='Brand avatar identifier')] = None
+
+
+class Modalities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    conversational: Annotated[
+        bool | None, Field(description='Pure text exchange - the baseline modality')
+    ] = True
+    voice: Annotated[
+        bool | Voice | None, Field(description='Audio-based interaction using brand voice')
+    ] = None
+    video: Annotated[bool | Video | None, Field(description='Brand video content playback')] = None
+    avatar: Annotated[
+        bool | Avatar | None, Field(description='Animated video presence with brand avatar')
+    ] = None
+
+
+class StandardEnum(Enum):
+    text = 'text'
+    link = 'link'
+    image = 'image'
+    product_card = 'product_card'
+    carousel = 'carousel'
+    action_button = 'action_button'
+
+
+class Components(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    standard: Annotated[
+        list[StandardEnum] | None,
+        Field(description='Standard components that all SI hosts must render'),
+    ] = None
+    extensions: Annotated[
+        dict[str, Any] | None,
+        Field(description='Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)'),
+    ] = None
+
+
+class Commerce(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    acp_checkout: Annotated[
+        bool | None, Field(description='Supports ACP (Agentic Commerce Protocol) checkout handoff')
+    ] = None
+
+
+class A2ui(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supported: Annotated[bool | None, Field(description='Supports A2UI surface rendering')] = False
+    catalogs: Annotated[
+        list[str] | None,
+        Field(description="Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"),
+    ] = None
+
+
+class Capabilities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    modalities: Annotated[
+        Modalities | None, Field(description='Interaction modalities supported')
+    ] = None
+    components: Annotated[Components | None, Field(description='Visual components supported')] = (
+        None
+    )
+    commerce: Annotated[Commerce | None, Field(description='Commerce capabilities')] = None
+    a2ui: Annotated[A2ui | None, Field(description='A2UI (Agent-to-UI) capabilities')] = None
+    mcp_apps: Annotated[
+        bool | None, Field(description='Supports MCP Apps for rendering A2UI surfaces in iframes')
+    ] = False
+
+
+class SponsoredIntelligence(AdCPBaseModel):
+    endpoint: Annotated[Endpoint, Field(description='SI agent endpoint configuration')]
+    capabilities: Annotated[
+        Capabilities,
+        Field(
+            description='Modalities, components, and commerce capabilities', title='SI Capabilities'
+        ),
+    ]
+    brand_url: Annotated[
+        AnyUrl | None, Field(description='URL to brand.json with colors, fonts, logos, tone')
+    ] = None
+
+
+class RightType(Enum):
+    talent = 'talent'
+    character = 'character'
+    brand_ip = 'brand_ip'
+    music = 'music'
+    stock_media = 'stock_media'
+
+
+class AvailableUs(Enum):
+    likeness = 'likeness'
+    voice = 'voice'
+    name = 'name'
+    endorsement = 'endorsement'
+    motion_capture = 'motion_capture'
+    signature = 'signature'
+    catchphrase = 'catchphrase'
+    sync = 'sync'
+    background_music = 'background_music'
+    editorial = 'editorial'
+    commercial = 'commercial'
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights: Annotated[
+        bool | None,
+        Field(
+            description='Supports get_rights and acquire_rights for rights discovery and clearance'
+        ),
+    ] = False
+    right_types: Annotated[
+        list[RightType] | None, Field(description='Types of rights available through this agent')
+    ] = None
+    available_uses: Annotated[
+        list[AvailableUs] | None,
+        Field(description="Rights uses available across this agent's roster"),
+    ] = None
+    generation_providers: Annotated[
+        list[str] | None,
+        Field(description='LLM/generation providers this agent can issue credentials for'),
+    ] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description="Description of the agent's brand protocol capabilities", max_length=5000
+        ),
+    ] = None
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supports_compliance: Annotated[
+        bool | None,
+        Field(
+            description='When true, this creative agent can process briefs with compliance requirements (required_disclosures, prohibited_claims) and will validate that disclosures can be satisfied by the target format.'
+        ),
+    ] = None
+    has_creative_library: Annotated[
+        bool | None,
+        Field(
+            description='When true, this agent hosts a creative library and supports list_creatives and creative_id references in build_creative. Creative agents with a library should also implement the accounts protocol (sync_accounts / list_accounts) so buyers can establish access.'
+        ),
+    ] = False
+    supports_generation: Annotated[
+        bool | None,
+        Field(
+            description='When true, this agent can generate creatives from natural language briefs via build_creative. The buyer provides a message with creative direction, and the agent produces a manifest with generated assets. When false, build_creative only supports transformation or library retrieval.'
+        ),
+    ] = False
+    supports_transformation: Annotated[
+        bool | None,
+        Field(
+            description='When true, this agent can transform or resize existing manifests via build_creative. The buyer provides a creative_manifest and a target_format_id, and the agent adapts the creative to the new format.'
+        ),
+    ] = False
+
+
+class CoversContentDigest(Enum):
+    required = 'required'
+    forbidden = 'forbidden'
+    either = 'either'
+
+
+class RequestSigning(AdCPBaseModel):
+    supported: Annotated[
+        bool,
+        Field(
+            description='Whether this agent verifies RFC 9421 signatures on incoming requests. When true, signatures present on requests are validated per the AdCP request-signing profile. When false or absent, signatures are ignored (requests are bearer-authenticated only).'
+        ),
+    ]
+    covers_content_digest: Annotated[
+        CoversContentDigest | None,
+        Field(
+            description="Policy for content-digest coverage in request signatures. 'required': signers MUST cover content-digest (body is bound to the signature); body-unbound signatures rejected with request_signature_components_incomplete. 'forbidden': signers MUST NOT cover content-digest; body-bound signatures rejected with request_signature_components_unexpected. This is an opt-out for the narrow case of legacy infrastructure that cannot preserve body bytes. 'either' (default): signer chooses per-request; verifier accepts both covered and uncovered forms. 'required' is recommended for spend-committing operations in production; 4.0 recommends 'required' for those operations."
+        ),
+    ] = CoversContentDigest.either
+    required_for: Annotated[
+        list[str] | None,
+        Field(
+            description="AdCP protocol operation names (e.g., 'create_media_buy') for which this agent rejects unsigned requests with request_signature_required. Not MCP tool names, A2A skill names, or any transport-specific rename — verifiers MUST NOT accept operation names that are not defined by the AdCP protocol spec. Empty in 3.0 by default; sellers populate selectively during per-counterparty pilots. In 4.0 this list MUST include all spend-committing operations the agent supports (create_media_buy, acquire_*, etc.). Counterparties MUST sign any listed operation."
+        ),
+    ] = []
+    warn_for: Annotated[
+        list[str] | None,
+        Field(
+            description='AdCP protocol operation names for which this agent verifies signatures when present and logs failures but does NOT reject the request. Used as a shadow-mode bridge between supported_for and required_for: the verifier surfaces failure rates in monitoring before flipping an operation to required. Precedence: required_for > warn_for > supported_for. An operation in required_for ignores warn_for. Counterparties SHOULD sign operations in warn_for; verifiers MUST NOT reject if the signature is missing or invalid.'
+        ),
+    ] = []
+    supported_for: Annotated[
+        list[str] | None,
+        Field(
+            description='AdCP protocol operation names for which this agent verifies signatures when present but does not require them. Counterparties SHOULD sign operations in this list. Typically a superset of required_for and warn_for.'
+        ),
+    ] = None
+
+
+class Scenario(Enum):
+    force_creative_status = 'force_creative_status'
+    force_account_status = 'force_account_status'
+    force_media_buy_status = 'force_media_buy_status'
+    force_session_status = 'force_session_status'
+    simulate_delivery = 'simulate_delivery'
+    simulate_budget_spend = 'simulate_budget_spend'
+
+
+class ComplianceTesting(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    scenarios: Annotated[
+        list[Scenario],
+        Field(
+            description="Compliance testing scenarios this agent supports. Must be non-empty — at least one scenario. Callers can also use comply_test_controller with scenario: 'list_scenarios' to discover supported scenarios at runtime.",
+            min_length=1,
+        ),
+    ]
+
+
+class Specialism(Enum):
+    audience_sync = 'audience-sync'
+    brand_rights = 'brand-rights'
+    content_standards = 'content-standards'
+    creative_ad_server = 'creative-ad-server'
+    creative_generative = 'creative-generative'
+    creative_template = 'creative-template'
+    governance_delivery_monitor = 'governance-delivery-monitor'
+    governance_spend_authority = 'governance-spend-authority'
+    measurement_verification = 'measurement-verification'
+    property_lists = 'property-lists'
+    sales_broadcast_tv = 'sales-broadcast-tv'
+    sales_catalog_driven = 'sales-catalog-driven'
+    sales_exchange = 'sales-exchange'
+    sales_guaranteed = 'sales-guaranteed'
+    sales_non_guaranteed = 'sales-non-guaranteed'
+    sales_proposal_mode = 'sales-proposal-mode'
+    sales_retail_media = 'sales-retail-media'
+    sales_social = 'sales-social'
+    sales_streaming_tv = 'sales-streaming-tv'
+    signal_marketplace = 'signal-marketplace'
+    signal_owned = 'signal-owned'
+    signed_requests = 'signed-requests'
+
+
+class ExtensionsSupportedItem(RootModel[str]):
+    root: Annotated[
+        str,
+        Field(
+            description="Extension namespace (lowercase alphanumeric with underscores, e.g., 'iab_tcf', 'iab_gpp')",
+            pattern='^[a-z][a-z0-9_]*$',
+        ),
+    ]
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class GetAdcpCapabilitiesResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp: Annotated[Adcp, Field(description='Core AdCP protocol information')]
+    supported_protocols: Annotated[
+        list[SupportedProtocol],
+        Field(
+            description='AdCP protocols this agent supports. Each value both (a) declares which tools the agent implements and (b) commits the agent to pass the baseline compliance storyboard at /compliance/{version}/protocols/{protocol}/ (with snake_case → kebab-case path mapping, e.g. media_buy → /compliance/.../protocols/media-buy/). Compliance testing support is declared separately via the `compliance_testing` capability block (below), not as a protocol claim.',
+            min_length=1,
+        ),
+    ]
+    account: Annotated[
+        Account | None,
+        Field(
+            description='Account management capabilities. Describes how accounts are established, what billing models are supported, and whether an account is required before browsing products.'
+        ),
+    ] = None
+    media_buy: Annotated[
+        MediaBuy | None,
+        Field(
+            description='Media-buy protocol capabilities. Expected when media_buy is in supported_protocols. Sellers declaring media_buy should also include account with supported_billing.'
+        ),
+    ] = None
+    signals: Annotated[
+        Signals | None,
+        Field(
+            description='Signals protocol capabilities. Only present if signals is in supported_protocols.'
+        ),
+    ] = None
+    governance: Annotated[
+        Governance | None,
+        Field(
+            description='Governance protocol capabilities. Only present if governance is in supported_protocols. Governance agents provide property and creative data like compliance scores, brand safety ratings, sustainability metrics, and creative quality assessments.'
+        ),
+    ] = None
+    sponsored_intelligence: Annotated[
+        SponsoredIntelligence | None,
+        Field(
+            description='Sponsored Intelligence protocol capabilities. Only present if sponsored_intelligence is in supported_protocols. SI agents handle conversational brand experiences.'
+        ),
+    ] = None
+    brand: Annotated[
+        Brand | None,
+        Field(
+            description='Brand protocol capabilities. Only present if brand is in supported_protocols. Brand agents provide identity data (logos, colors, tone, assets) and optionally rights clearance for licensable content (talent, music, stock media).'
+        ),
+    ] = None
+    creative: Annotated[
+        Creative | None,
+        Field(
+            description='Creative protocol capabilities. Only present if creative is in supported_protocols.'
+        ),
+    ] = None
+    request_signing: Annotated[
+        RequestSigning | None,
+        Field(
+            description='RFC 9421 HTTP Signatures support for incoming requests. Optional in 3.0 — capability-advertised so counterparties can opt into signing selectively. Required for spend-committing operations in 4.0 (the next breaking-changes accumulation window). The full profile is defined in docs/building/implementation/security.mdx (Signed Requests (Transport Layer)).'
+        ),
+    ] = None
+    compliance_testing: Annotated[
+        ComplianceTesting | None,
+        Field(
+            description='Compliance testing capabilities. The presence of this block declares that the agent supports deterministic testing via comply_test_controller for lifecycle state machine validation. Omit the block entirely if the agent does not support compliance testing.'
+        ),
+    ] = None
+    specialisms: Annotated[
+        list[Specialism] | None,
+        Field(
+            description='Optional — specialized compliance claims this agent supports. Omitting the field means the agent declares no specialism claims (it still passes the universal + domain-baseline storyboards implied by supported_protocols). Each specialism maps to a storyboard bundle at /compliance/{version}/specialisms/{id}/ that the AAO compliance runner executes to verify the claim. Each specialism rolls up to one of the protocols in supported_protocols — the runner rejects a specialism claim whose parent protocol is missing. Only list specialisms your agent actually implements — the AAO Verified badge enumerates which specialisms were demonstrably passed.'
+        ),
+    ] = None
+    extensions_supported: Annotated[
+        list[ExtensionsSupportedItem] | None,
+        Field(
+            description='Extension namespaces this agent supports. Buyers can expect meaningful data in ext.{namespace} fields on responses from this agent. Extension schemas are published in the AdCP extension registry.'
+        ),
+    ] = None
+    last_updated: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp of when capabilities were last updated. Buyers can use this for cache invalidation.'
+        ),
+    ] = None
+    errors: Annotated[
+        list[Error] | None, Field(description='Task-specific errors and warnings')
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/signals/__init__.py b/src/adcp/types/generated_poc/bundled/signals/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/signals/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/signals/activate_signal_request.py b/src/adcp/types/generated_poc/bundled/signals/activate_signal_request.py
new file mode 100644
index 000000000..82328160e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/signals/activate_signal_request.py
@@ -0,0 +1,193 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/signals/activate_signal_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class Action(Enum):
+    activate = 'activate'
+    deactivate = 'deactivate'
+
+
+class Destinations(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['platform'],
+        Field(description='Discriminator indicating this is a platform-based deployment'),
+    ]
+    platform: Annotated[
+        str,
+        Field(description="Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')"),
+    ]
+    account: Annotated[
+        str | None, Field(description='Optional account identifier on the platform')
+    ] = None
+
+
+class Destinations1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['agent'],
+        Field(description='Discriminator indicating this is an agent URL-based deployment'),
+    ]
+    agent_url: Annotated[
+        AnyUrl, Field(description='URL identifying the deployment agent (for sales agents, etc.)')
+    ]
+    account: Annotated[
+        str | None, Field(description='Optional account identifier on the agent')
+    ] = None
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class ActivateSignalRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    action: Annotated[
+        Action | None,
+        Field(
+            description="Whether to activate or deactivate the signal. Deactivating removes the segment from downstream platforms, required when campaigns end to comply with data governance policies (GDPR, CCPA). Defaults to 'activate' when omitted."
+        ),
+    ] = Action.activate
+    signal_agent_segment_id: Annotated[
+        str, Field(description='The universal identifier for the signal to activate')
+    ]
+    destinations: Annotated[
+        list[Destinations | Destinations1],
+        Field(
+            description='Target destination(s) for activation. If the authenticated caller matches one of these destinations, activation keys will be included in the response.',
+            min_length=1,
+        ),
+    ]
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description="The pricing option selected from the signal's pricing_options in the get_signals response. Required when the signal has pricing options. Records the buyer's pricing commitment at activation time; pass this same value in report_usage for billing verification."
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account2 | None,
+        Field(
+            description='Account for this activation. Associates with a commercial relationship established via sync_accounts.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate activations on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/signals/activate_signal_response.py b/src/adcp/types/generated_poc/bundled/signals/activate_signal_response.py
new file mode 100644
index 000000000..feca7e497
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/signals/activate_signal_response.py
@@ -0,0 +1,206 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/signals/activate_signal_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+
+class ActivationKey(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Literal['segment_id'], Field(description='Segment ID based targeting')]
+    segment_id: Annotated[
+        str,
+        Field(description='The platform-specific segment identifier to use in campaign targeting'),
+    ]
+
+
+class ActivationKey1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Literal['key_value'], Field(description='Key-value pair based targeting')]
+    key: Annotated[str, Field(description='The targeting parameter key')]
+    value: Annotated[str, Field(description='The targeting parameter value')]
+
+
+class Deployments(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['platform'],
+        Field(description='Discriminator indicating this is a platform-based deployment'),
+    ]
+    platform: Annotated[str, Field(description='Platform identifier for DSPs')]
+    account: Annotated[str | None, Field(description='Account identifier if applicable')] = None
+    is_live: Annotated[
+        bool, Field(description='Whether signal is currently active on this deployment')
+    ]
+    activation_key: Annotated[
+        ActivationKey | ActivationKey1 | None,
+        Field(
+            description='The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.',
+            title='Activation Key',
+        ),
+    ] = None
+    estimated_activation_duration_minutes: Annotated[
+        float | None,
+        Field(
+            description='Estimated time to activate if not live, or to complete activation if in progress',
+            ge=0.0,
+        ),
+    ] = None
+    deployed_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp when activation completed (if is_live=true)'),
+    ] = None
+
+
+class ActivationKey2(ActivationKey):
+    pass
+
+
+class ActivationKey3(ActivationKey1):
+    pass
+
+
+class Deployments1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['agent'],
+        Field(description='Discriminator indicating this is an agent URL-based deployment'),
+    ]
+    agent_url: Annotated[AnyUrl, Field(description='URL identifying the deployment agent')]
+    account: Annotated[str | None, Field(description='Account identifier if applicable')] = None
+    is_live: Annotated[
+        bool, Field(description='Whether signal is currently active on this deployment')
+    ]
+    activation_key: Annotated[
+        ActivationKey2 | ActivationKey3 | None,
+        Field(
+            description='The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.',
+            title='Activation Key',
+        ),
+    ] = None
+    estimated_activation_duration_minutes: Annotated[
+        float | None,
+        Field(
+            description='Estimated time to activate if not live, or to complete activation if in progress',
+            ge=0.0,
+        ),
+    ] = None
+    deployed_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp when activation completed (if is_live=true)'),
+    ] = None
+
+
+class ActivateSignalResponse3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    deployments: Annotated[
+        list[Deployments | Deployments1],
+        Field(description='Array of deployment results for each deployment target'),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class ActivateSignalResponse4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    errors: Annotated[
+        list[Error],
+        Field(
+            description='Array of errors explaining why activation failed (e.g., platform connectivity issues, signal definition problems, authentication failures)',
+            min_length=1,
+        ),
+    ]
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+ActivateSignalResponse = ActivateSignalResponse3 | ActivateSignalResponse4
diff --git a/src/adcp/types/generated_poc/bundled/signals/get_signals_request.py b/src/adcp/types/generated_poc/bundled/signals/get_signals_request.py
new file mode 100644
index 000000000..ebc8115f6
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/signals/get_signals_request.py
@@ -0,0 +1,316 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/signals/get_signals_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+
+class Account(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    account_id: Annotated[
+        str,
+        Field(
+            description='Seller-assigned account identifier (from sync_accounts or list_accounts)'
+        ),
+    ]
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    domain: Annotated[
+        str,
+        Field(
+            description="Domain where /.well-known/brand.json is hosted, or the brand's operating domain",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    brand_id: Annotated[
+        str | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.',
+            examples=['tide', 'cheerios', 'air_jordan', 'nike', 'pampers'],
+            pattern='^[a-z0-9_]+$',
+            title='Brand ID',
+        ),
+    ] = None
+
+
+class Account24(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    brand: Annotated[
+        Brand,
+        Field(
+            description='Brand reference identifying the advertiser',
+            examples=[
+                {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                {'domain': 'nova-brands.com', 'brand_id': 'glow'},
+                {'domain': 'acme-corp.com'},
+            ],
+            title='Brand Reference',
+        ),
+    ]
+    operator: Annotated[
+        str,
+        Field(
+            description="Domain of the entity operating on the brand's behalf. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    sandbox: Annotated[
+        bool | None,
+        Field(
+            description='When true, references the sandbox account for this brand/operator pair. Defaults to false (production account).'
+        ),
+    ] = False
+
+
+class SignalIds1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['catalog'],
+        Field(
+            description="Discriminator indicating this signal is from a data provider's published catalog"
+        ),
+    ]
+    data_provider_domain: Annotated[
+        str,
+        Field(
+            description="Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class SignalIds2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['agent'],
+        Field(
+            description='Discriminator indicating this signal is native to the agent (not from a data provider catalog)'
+        ),
+    ]
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class SignalIds(RootModel[SignalIds1 | SignalIds2]):
+    root: Annotated[
+        SignalIds1 | SignalIds2,
+        Field(
+            description="Universal signal identifier. Uses 'source' as discriminator: 'catalog' for signals from a data provider's published catalog (verifiable), 'agent' for agent-native signals (not externally verifiable).",
+            discriminator='source',
+            title='Signal ID',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Destinations(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['platform'],
+        Field(description='Discriminator indicating this is a platform-based deployment'),
+    ]
+    platform: Annotated[
+        str,
+        Field(description="Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')"),
+    ]
+    account: Annotated[
+        str | None, Field(description='Optional account identifier on the platform')
+    ] = None
+
+
+class Destinations3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['agent'],
+        Field(description='Discriminator indicating this is an agent URL-based deployment'),
+    ]
+    agent_url: Annotated[
+        AnyUrl, Field(description='URL identifying the deployment agent (for sales agents, etc.)')
+    ]
+    account: Annotated[
+        str | None, Field(description='Optional account identifier on the agent')
+    ] = None
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class CatalogType(Enum):
+    marketplace = 'marketplace'
+    custom = 'custom'
+    owned = 'owned'
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    catalog_types: Annotated[
+        list[CatalogType] | None, Field(description='Filter by catalog type', min_length=1)
+    ] = None
+    data_providers: Annotated[
+        list[str] | None, Field(description='Filter by specific data providers', min_length=1)
+    ] = None
+    max_cpm: Annotated[
+        float | None,
+        Field(description="Maximum CPM filter. Applies only to signals with model='cpm'.", ge=0.0),
+    ] = None
+    max_percent: Annotated[
+        float | None,
+        Field(
+            description='Maximum percent-of-media rate filter. Signals where all percent_of_media pricing options exceed this value are excluded. Does not account for max_cpm caps.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
+    min_coverage_percentage: Annotated[
+        float | None, Field(description='Minimum coverage requirement', ge=0.0, le=100.0)
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class GetSignalsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        Account | Account24 | None,
+        Field(
+            description='Account for this request. When provided, the signals agent returns per-account pricing options if configured.',
+            examples=[
+                {'account_id': 'acc_acme_001'},
+                {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
+                {
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
+                    'operator': 'pinnacle-media.com',
+                },
+                {
+                    'brand': {'domain': 'acme-corp.com'},
+                    'operator': 'acme-corp.com',
+                    'sandbox': True,
+                },
+            ],
+            title='Account Reference',
+        ),
+    ] = None
+    signal_spec: Annotated[
+        str | None,
+        Field(
+            description='Natural language description of the desired signals. When used alone, enables semantic discovery. When combined with signal_ids, provides context for the agent but signal_ids matches are returned first.'
+        ),
+    ] = None
+    signal_ids: Annotated[
+        list[SignalIds] | None,
+        Field(
+            description="Specific signals to look up by data provider and ID. Returns exact matches from the data provider's catalog. When combined with signal_spec, these signals anchor the starting set and signal_spec guides adjustments.",
+            min_length=1,
+        ),
+    ] = None
+    destinations: Annotated[
+        list[Destinations | Destinations3] | None,
+        Field(
+            description='Filter signals to those activatable on specific agents/platforms. When omitted, returns all signals available on the current agent. If the authenticated caller matches one of these destinations, activation keys will be included in the response.',
+            min_length=1,
+        ),
+    ] = None
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description='Countries where signals will be used (ISO 3166-1 alpha-2 codes). When omitted, no geographic filter is applied.',
+            min_length=1,
+        ),
+    ] = None
+    filters: Annotated[
+        Filters | None,
+        Field(description='Filters to refine signal discovery results', title='Signal Filters'),
+    ] = None
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of results to return', ge=1)
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination parameters for list operations',
+            title='Pagination Request',
+        ),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/signals/get_signals_response.py b/src/adcp/types/generated_poc/bundled/signals/get_signals_response.py
new file mode 100644
index 000000000..86f0d2f87
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/signals/get_signals_response.py
@@ -0,0 +1,472 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/signals/get_signals_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
+
+
+class SignalId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['catalog'],
+        Field(
+            description="Discriminator indicating this signal is from a data provider's published catalog"
+        ),
+    ]
+    data_provider_domain: Annotated[
+        str,
+        Field(
+            description="Domain of the data provider that owns this signal (e.g., 'polk.com', 'experian.com'). The signal definition is published at this domain's /.well-known/adagents.json",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the data provider's catalog (e.g., 'likely_tesla_buyers', 'income_100k_plus')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class SignalId16(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    source: Annotated[
+        Literal['agent'],
+        Field(
+            description='Discriminator indicating this signal is native to the agent (not from a data provider catalog)'
+        ),
+    ]
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="URL of the signals agent that provides this signal (e.g., 'https://liveramp.com/.well-known/adcp/signals')"
+        ),
+    ]
+    id: Annotated[
+        str,
+        Field(
+            description="Signal identifier within the agent's signal set (e.g., 'custom_auto_intenders')",
+            pattern='^[a-zA-Z0-9_-]+$',
+        ),
+    ]
+
+
+class ValueType(Enum):
+    binary = 'binary'
+    categorical = 'categorical'
+    numeric = 'numeric'
+
+
+class Range(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[float, Field(description='Minimum value (inclusive)')]
+    max: Annotated[float, Field(description='Maximum value (inclusive)')]
+
+
+class SignalType(Enum):
+    marketplace = 'marketplace'
+    custom = 'custom'
+    owned = 'owned'
+
+
+class ActivationKey(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Literal['segment_id'], Field(description='Segment ID based targeting')]
+    segment_id: Annotated[
+        str,
+        Field(description='The platform-specific segment identifier to use in campaign targeting'),
+    ]
+
+
+class ActivationKey7(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Literal['key_value'], Field(description='Key-value pair based targeting')]
+    key: Annotated[str, Field(description='The targeting parameter key')]
+    value: Annotated[str, Field(description='The targeting parameter value')]
+
+
+class Deployments(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['platform'],
+        Field(description='Discriminator indicating this is a platform-based deployment'),
+    ]
+    platform: Annotated[str, Field(description='Platform identifier for DSPs')]
+    account: Annotated[str | None, Field(description='Account identifier if applicable')] = None
+    is_live: Annotated[
+        bool, Field(description='Whether signal is currently active on this deployment')
+    ]
+    activation_key: Annotated[
+        ActivationKey | ActivationKey7 | None,
+        Field(
+            description='The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.',
+            title='Activation Key',
+        ),
+    ] = None
+    estimated_activation_duration_minutes: Annotated[
+        float | None,
+        Field(
+            description='Estimated time to activate if not live, or to complete activation if in progress',
+            ge=0.0,
+        ),
+    ] = None
+    deployed_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp when activation completed (if is_live=true)'),
+    ] = None
+
+
+class ActivationKey8(ActivationKey):
+    pass
+
+
+class ActivationKey9(ActivationKey7):
+    pass
+
+
+class Deployments3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Literal['agent'],
+        Field(description='Discriminator indicating this is an agent URL-based deployment'),
+    ]
+    agent_url: Annotated[AnyUrl, Field(description='URL identifying the deployment agent')]
+    account: Annotated[str | None, Field(description='Account identifier if applicable')] = None
+    is_live: Annotated[
+        bool, Field(description='Whether signal is currently active on this deployment')
+    ]
+    activation_key: Annotated[
+        ActivationKey8 | ActivationKey9 | None,
+        Field(
+            description='The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.',
+            title='Activation Key',
+        ),
+    ] = None
+    estimated_activation_duration_minutes: Annotated[
+        float | None,
+        Field(
+            description='Estimated time to activate if not live, or to complete activation if in progress',
+            ge=0.0,
+        ),
+    ] = None
+    deployed_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp when activation completed (if is_live=true)'),
+    ] = None
+
+
+class PricingOption121(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption122(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class PricingOption123(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption124(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
+
+
+class PricingOption125(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class PricingOption126(PricingOption121, PricingOption125):
+    pass
+
+
+class PricingOption127(PricingOption122, PricingOption125):
+    pass
+
+
+class PricingOption128(PricingOption123, PricingOption125):
+    pass
+
+
+class PricingOption129(PricingOption124, PricingOption125):
+    pass
+
+
+class PricingOption(
+    RootModel[PricingOption126 | PricingOption127 | PricingOption128 | PricingOption129]
+):
+    root: Annotated[
+        PricingOption126 | PricingOption127 | PricingOption128 | PricingOption129,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
+
+
+class Signal(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    signal_id: Annotated[
+        SignalId | SignalId16,
+        Field(
+            description="Universal signal identifier referencing the data provider's catalog. Use this to verify authorization and look up signal definitions.",
+            discriminator='source',
+            title='Signal ID',
+        ),
+    ]
+    signal_agent_segment_id: Annotated[
+        str,
+        Field(
+            description="Opaque identifier used for activation. This is the signals agent's internal segment ID."
+        ),
+    ]
+    name: Annotated[str, Field(description='Human-readable signal name')]
+    description: Annotated[str, Field(description='Detailed signal description')]
+    value_type: Annotated[
+        ValueType | None,
+        Field(
+            description="The data type of this signal's values (binary, categorical, numeric)",
+            title='Signal Value Type',
+        ),
+    ] = None
+    categories: Annotated[
+        list[str] | None,
+        Field(
+            description="Valid values for categorical signals. Present when value_type is 'categorical'. Buyers must use one of these values in SignalTargeting.values."
+        ),
+    ] = None
+    range: Annotated[
+        Range | None,
+        Field(description="Valid range for numeric signals. Present when value_type is 'numeric'."),
+    ] = None
+    signal_type: Annotated[
+        SignalType,
+        Field(
+            description='Catalog type of signal (marketplace, custom, owned)',
+            title='Signal Catalog Type',
+        ),
+    ]
+    data_provider: Annotated[str, Field(description='Human-readable name of the data provider')]
+    coverage_percentage: Annotated[
+        float, Field(description='Percentage of audience coverage', ge=0.0, le=100.0)
+    ]
+    deployments: Annotated[
+        list[Deployments | Deployments3], Field(description='Array of deployment targets')
+    ]
+    pricing_options: Annotated[
+        list[PricingOption],
+        Field(
+            description='Pricing options available for this signal. The buyer selects one and passes its pricing_option_id in report_usage for billing verification.',
+            min_length=1,
+        ),
+    ]
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
+    cursor: Annotated[
+        str | None,
+        Field(
+            description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
+        ),
+    ] = None
+    total_count: Annotated[
+        int | None,
+        Field(
+            description='Total number of items matching the query across all pages. Optional because not all backends can efficiently compute this.',
+            ge=0,
+        ),
+    ] = None
+
+
+class GetSignalsResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    signals: Annotated[list[Signal], Field(description='Array of matching signals')]
+    errors: Annotated[
+        list[Error] | None,
+        Field(
+            description='Task-specific errors and warnings (e.g., signal discovery or pricing issues)'
+        ),
+    ] = None
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Standard cursor-based pagination metadata for list responses',
+            title='Pagination Response',
+        ),
+    ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/__init__.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_get_offering_request.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_get_offering_request.py
new file mode 100644
index 000000000..4b3b3d32e
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_get_offering_request.py
@@ -0,0 +1,46 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_get_offering_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class SiGetOfferingRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    offering_id: Annotated[
+        str, Field(description='Offering identifier from the catalog to get details for')
+    ]
+    context: Annotated[
+        str | None,
+        Field(
+            description="Optional natural language context about user intent for personalized results (e.g., 'mens size 14 near Cincinnati'). Must be anonymous - no PII."
+        ),
+    ] = None
+    include_products: Annotated[
+        bool | None, Field(description='Whether to include matching products in the response')
+    ] = False
+    product_limit: Annotated[
+        int | None, Field(description='Maximum number of matching products to return', ge=1, le=50)
+    ] = 5
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_get_offering_response.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_get_offering_response.py
new file mode 100644
index 000000000..fef4aaa58
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_get_offering_response.py
@@ -0,0 +1,152 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_get_offering_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+
+class Offering(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    offering_id: Annotated[str | None, Field(description='Offering identifier')] = None
+    title: Annotated[str | None, Field(description='Offering title')] = None
+    summary: Annotated[str | None, Field(description='Brief summary of the offering')] = None
+    tagline: Annotated[str | None, Field(description='Short promotional tagline')] = None
+    expires_at: Annotated[AwareDatetime | None, Field(description='When this offering expires')] = (
+        None
+    )
+    price_hint: Annotated[
+        str | None, Field(description="Price indication (e.g., 'from $199', '50% off')")
+    ] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Hero image for the offering')] = None
+    landing_url: Annotated[AnyUrl | None, Field(description='Landing page URL')] = None
+
+
+class MatchingProduct(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    product_id: Annotated[str, Field(description='Product identifier')]
+    name: Annotated[str, Field(description='Product name')]
+    price: Annotated[str | None, Field(description="Display price (e.g., '$129', '$89.99')")] = None
+    original_price: Annotated[str | None, Field(description='Original price if on sale')] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Product image')] = None
+    availability_summary: Annotated[
+        str | None,
+        Field(
+            description="Brief availability info (e.g., 'In stock', 'Size 14 available', '3 left')"
+        ),
+    ] = None
+    url: Annotated[AnyUrl | None, Field(description='Product detail page URL')] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class SiGetOfferingResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available: Annotated[bool, Field(description='Whether the offering is currently available')]
+    offering_token: Annotated[
+        str | None,
+        Field(
+            description="Token to pass to si_initiate_session for session continuity. Brand stores the full query context server-side (products shown, order, context) so they can resolve references like 'the second one' when the session starts."
+        ),
+    ] = None
+    ttl_seconds: Annotated[
+        int | None,
+        Field(
+            description='How long this offering information is valid (seconds). Host should re-fetch after TTL expires.',
+            ge=0,
+        ),
+    ] = None
+    checked_at: Annotated[
+        AwareDatetime | None, Field(description='When this offering information was retrieved')
+    ] = None
+    offering: Annotated[Offering | None, Field(description='Offering details')] = None
+    matching_products: Annotated[
+        list[MatchingProduct] | None,
+        Field(
+            description='Products matching the request context. Only included if include_products was true.'
+        ),
+    ] = None
+    total_matching: Annotated[
+        int | None,
+        Field(
+            description='Total number of products matching the context (may be more than returned in matching_products)',
+            ge=0,
+        ),
+    ] = None
+    unavailable_reason: Annotated[
+        str | None,
+        Field(
+            description="If not available, why (e.g., 'expired', 'sold_out', 'region_restricted')"
+        ),
+    ] = None
+    alternative_offering_ids: Annotated[
+        list[str] | None,
+        Field(description='Alternative offerings to consider if this one is unavailable'),
+    ] = None
+    errors: Annotated[list[Error] | None, Field(description='Errors during offering lookup')] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_initiate_session_request.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_initiate_session_request.py
new file mode 100644
index 000000000..5a169f845
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_initiate_session_request.py
@@ -0,0 +1,246 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_initiate_session_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, EmailStr, Field
+
+
+class ConsentScopeEnum(Enum):
+    name = 'name'
+    email = 'email'
+    shipping_address = 'shipping_address'
+    phone = 'phone'
+    locale = 'locale'
+
+
+class PrivacyPolicyAcknowledged(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    brand_policy_url: Annotated[
+        AnyUrl | None, Field(description="URL to brand's privacy policy")
+    ] = None
+    brand_policy_version: Annotated[
+        str | None, Field(description='Version of policy acknowledged')
+    ] = None
+
+
+class ShippingAddress(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    street: str | None = None
+    city: str | None = None
+    state: str | None = None
+    postal_code: str | None = None
+    country: str | None = None
+
+
+class User(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    email: Annotated[EmailStr | None, Field(description="User's email address")] = None
+    name: Annotated[str | None, Field(description="User's display name")] = None
+    locale: Annotated[str | None, Field(description="User's locale (e.g., en-US)")] = None
+    phone: Annotated[str | None, Field(description="User's phone number")] = None
+    shipping_address: Annotated[
+        ShippingAddress | None, Field(description="User's shipping address for accurate pricing")
+    ] = None
+
+
+class Identity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    consent_granted: Annotated[bool, Field(description='Whether user consented to share identity')]
+    consent_timestamp: Annotated[
+        AwareDatetime | None, Field(description='When consent was granted (ISO 8601)')
+    ] = None
+    consent_scope: Annotated[
+        list[ConsentScopeEnum] | None, Field(description='What data was consented to share')
+    ] = None
+    privacy_policy_acknowledged: Annotated[
+        PrivacyPolicyAcknowledged | None, Field(description='Brand privacy policy acknowledgment')
+    ] = None
+    user: Annotated[
+        User | None, Field(description='User data (only present if consent_granted is true)')
+    ] = None
+    anonymous_session_id: Annotated[
+        str | None,
+        Field(description='Session ID for anonymous users (when consent_granted is false)'),
+    ] = None
+
+
+class Voice(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: Annotated[
+        str | None, Field(description='TTS provider (elevenlabs, openai, etc.)')
+    ] = None
+    voice_id: Annotated[str | None, Field(description='Brand voice identifier')] = None
+
+
+class Video(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    formats: Annotated[
+        list[str] | None, Field(description='Supported video formats (mp4, webm, etc.)')
+    ] = None
+    max_duration_seconds: Annotated[int | None, Field(description='Maximum video duration')] = None
+
+
+class Avatar(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: Annotated[
+        str | None, Field(description='Avatar provider (d-id, heygen, synthesia, etc.)')
+    ] = None
+    avatar_id: Annotated[str | None, Field(description='Brand avatar identifier')] = None
+
+
+class Modalities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    conversational: Annotated[
+        bool | None, Field(description='Pure text exchange - the baseline modality')
+    ] = True
+    voice: Annotated[
+        bool | Voice | None, Field(description='Audio-based interaction using brand voice')
+    ] = None
+    video: Annotated[bool | Video | None, Field(description='Brand video content playback')] = None
+    avatar: Annotated[
+        bool | Avatar | None, Field(description='Animated video presence with brand avatar')
+    ] = None
+
+
+class StandardEnum(Enum):
+    text = 'text'
+    link = 'link'
+    image = 'image'
+    product_card = 'product_card'
+    carousel = 'carousel'
+    action_button = 'action_button'
+
+
+class Components(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    standard: Annotated[
+        list[StandardEnum] | None,
+        Field(description='Standard components that all SI hosts must render'),
+    ] = None
+    extensions: Annotated[
+        dict[str, Any] | None,
+        Field(description='Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)'),
+    ] = None
+
+
+class Commerce(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    acp_checkout: Annotated[
+        bool | None, Field(description='Supports ACP (Agentic Commerce Protocol) checkout handoff')
+    ] = None
+
+
+class A2ui(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supported: Annotated[bool | None, Field(description='Supports A2UI surface rendering')] = False
+    catalogs: Annotated[
+        list[str] | None,
+        Field(description="Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"),
+    ] = None
+
+
+class SupportedCapabilities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    modalities: Annotated[
+        Modalities | None, Field(description='Interaction modalities supported')
+    ] = None
+    components: Annotated[Components | None, Field(description='Visual components supported')] = (
+        None
+    )
+    commerce: Annotated[Commerce | None, Field(description='Commerce capabilities')] = None
+    a2ui: Annotated[A2ui | None, Field(description='A2UI (Agent-to-UI) capabilities')] = None
+    mcp_apps: Annotated[
+        bool | None, Field(description='Supports MCP Apps for rendering A2UI surfaces in iframes')
+    ] = False
+
+
+class SiInitiateSessionRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    context: Annotated[
+        str, Field(description='Conversation handoff from the host describing what the user needs')
+    ]
+    identity: Annotated[
+        Identity,
+        Field(
+            description='User identity shared with brand agent (with explicit consent)',
+            title='SI Identity',
+        ),
+    ]
+    media_buy_id: Annotated[
+        str | None, Field(description='AdCP media buy ID if session was triggered by advertising')
+    ] = None
+    placement: Annotated[
+        str | None,
+        Field(
+            description="Where this session was triggered (e.g., 'chatgpt_search', 'claude_chat')"
+        ),
+    ] = None
+    offering_id: Annotated[
+        str | None, Field(description='Brand-specific offering identifier to apply')
+    ] = None
+    supported_capabilities: Annotated[
+        SupportedCapabilities | None,
+        Field(description='What capabilities the host supports', title='SI Capabilities'),
+    ] = None
+    offering_token: Annotated[
+        str | None,
+        Field(
+            description="Token from si_get_offering response for session continuity. Brand uses this to recall what products were shown to the user, enabling natural references like 'the second one' or 'that blue shoe'."
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate session creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_initiate_session_response.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_initiate_session_response.py
new file mode 100644
index 000000000..4475edb39
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_initiate_session_response.py
@@ -0,0 +1,246 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_initiate_session_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Type(Enum):
+    text = 'text'
+    link = 'link'
+    image = 'image'
+    product_card = 'product_card'
+    carousel = 'carousel'
+    action_button = 'action_button'
+    app_handoff = 'app_handoff'
+    integration_actions = 'integration_actions'
+
+
+class UiElement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Type, Field(description='Component type')]
+    data: Annotated[dict[str, Any] | None, Field(description='Component-specific data')] = None
+
+
+class Response(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    message: Annotated[str | None, Field(description='Conversational message from brand agent')] = (
+        None
+    )
+    ui_elements: Annotated[
+        list[UiElement] | None, Field(description='Visual components to render')
+    ] = None
+
+
+class Voice(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: Annotated[
+        str | None, Field(description='TTS provider (elevenlabs, openai, etc.)')
+    ] = None
+    voice_id: Annotated[str | None, Field(description='Brand voice identifier')] = None
+
+
+class Video(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    formats: Annotated[
+        list[str] | None, Field(description='Supported video formats (mp4, webm, etc.)')
+    ] = None
+    max_duration_seconds: Annotated[int | None, Field(description='Maximum video duration')] = None
+
+
+class Avatar(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: Annotated[
+        str | None, Field(description='Avatar provider (d-id, heygen, synthesia, etc.)')
+    ] = None
+    avatar_id: Annotated[str | None, Field(description='Brand avatar identifier')] = None
+
+
+class Modalities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    conversational: Annotated[
+        bool | None, Field(description='Pure text exchange - the baseline modality')
+    ] = True
+    voice: Annotated[
+        bool | Voice | None, Field(description='Audio-based interaction using brand voice')
+    ] = None
+    video: Annotated[bool | Video | None, Field(description='Brand video content playback')] = None
+    avatar: Annotated[
+        bool | Avatar | None, Field(description='Animated video presence with brand avatar')
+    ] = None
+
+
+class StandardEnum(Enum):
+    text = 'text'
+    link = 'link'
+    image = 'image'
+    product_card = 'product_card'
+    carousel = 'carousel'
+    action_button = 'action_button'
+
+
+class Components(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    standard: Annotated[
+        list[StandardEnum] | None,
+        Field(description='Standard components that all SI hosts must render'),
+    ] = None
+    extensions: Annotated[
+        dict[str, Any] | None,
+        Field(description='Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)'),
+    ] = None
+
+
+class Commerce(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    acp_checkout: Annotated[
+        bool | None, Field(description='Supports ACP (Agentic Commerce Protocol) checkout handoff')
+    ] = None
+
+
+class A2ui(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supported: Annotated[bool | None, Field(description='Supports A2UI surface rendering')] = False
+    catalogs: Annotated[
+        list[str] | None,
+        Field(description="Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"),
+    ] = None
+
+
+class NegotiatedCapabilities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    modalities: Annotated[
+        Modalities | None, Field(description='Interaction modalities supported')
+    ] = None
+    components: Annotated[Components | None, Field(description='Visual components supported')] = (
+        None
+    )
+    commerce: Annotated[Commerce | None, Field(description='Commerce capabilities')] = None
+    a2ui: Annotated[A2ui | None, Field(description='A2UI (Agent-to-UI) capabilities')] = None
+    mcp_apps: Annotated[
+        bool | None, Field(description='Supports MCP Apps for rendering A2UI surfaces in iframes')
+    ] = False
+
+
+class SessionStatus(Enum):
+    active = 'active'
+    pending_handoff = 'pending_handoff'
+    complete = 'complete'
+    terminated = 'terminated'
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class SiInitiateSessionResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    session_id: Annotated[
+        str, Field(description='Unique session identifier for subsequent messages')
+    ]
+    response: Annotated[Response | None, Field(description="Brand agent's initial response")] = None
+    negotiated_capabilities: Annotated[
+        NegotiatedCapabilities | None,
+        Field(
+            description='Intersection of brand and host capabilities for this session',
+            title='SI Capabilities',
+        ),
+    ] = None
+    session_status: Annotated[
+        SessionStatus,
+        Field(
+            description='Current session lifecycle state. Returned in initiation, message, and termination responses.',
+            title='SI Session Status',
+        ),
+    ]
+    session_ttl_seconds: Annotated[
+        int | None,
+        Field(
+            description='Session inactivity timeout in seconds. After this duration without a message, the brand agent may terminate the session. Hosts SHOULD warn users before timeout when possible.',
+            ge=1,
+        ),
+    ] = None
+    errors: Annotated[list[Error] | None, Field(description='Errors during session initiation')] = (
+        None
+    )
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_send_message_request.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_send_message_request.py
new file mode 100644
index 000000000..1ec671a11
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_send_message_request.py
@@ -0,0 +1,63 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_send_message_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class ActionResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action: Annotated[str | None, Field(description='The action that was triggered')] = None
+    payload: Annotated[
+        dict[str, Any] | None, Field(description='Action-specific response data')
+    ] = None
+
+
+class SiSendMessageRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. Each conversational turn is a distinct mutation of session transcript — without this key, a timeout-and-retry produces a duplicate turn and a duplicate model response. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each user turn.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    session_id: Annotated[str, Field(description='Active session identifier')]
+    message: Annotated[str | None, Field(description="User's message to the brand agent")] = None
+    action_response: Annotated[
+        ActionResponse | None,
+        Field(description='Response to a previous action_button (e.g., user clicked checkout)'),
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_send_message_response.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_send_message_response.py
new file mode 100644
index 000000000..35ec83b6c
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_send_message_response.py
@@ -0,0 +1,227 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_send_message_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Component(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    id: Annotated[str, Field(description='Unique identifier for this component within the surface')]
+    parentId: Annotated[
+        str | None, Field(description='ID of the parent component (null for root)')
+    ] = None
+    component: Annotated[
+        dict[str, dict[str, Any]],
+        Field(description='Component definition (keyed by component type)'),
+    ]
+
+
+class Surface(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    surfaceId: Annotated[str, Field(description='Unique identifier for this surface')]
+    catalogId: Annotated[
+        str | None, Field(description='Component catalog to use for rendering')
+    ] = 'standard'
+    components: Annotated[
+        list[Component], Field(description='Flat list of components (adjacency list structure)')
+    ]
+    rootId: Annotated[
+        str | None,
+        Field(description='ID of the root component (if not specified, first component is root)'),
+    ] = None
+    dataModel: Annotated[
+        dict[str, Any] | None, Field(description='Application data that components can bind to')
+    ] = None
+
+
+class Type(Enum):
+    text = 'text'
+    link = 'link'
+    image = 'image'
+    product_card = 'product_card'
+    carousel = 'carousel'
+    action_button = 'action_button'
+    app_handoff = 'app_handoff'
+    integration_actions = 'integration_actions'
+
+
+class UiElement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[Type, Field(description='Component type')]
+    data: Annotated[dict[str, Any] | None, Field(description='Component-specific data')] = None
+
+
+class Response(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    message: Annotated[str | None, Field(description='Conversational message from brand agent')] = (
+        None
+    )
+    surface: Annotated[
+        Surface | None,
+        Field(description='A2UI surface with interactive components', title='A2UI Surface'),
+    ] = None
+    ui_elements: Annotated[
+        list[UiElement] | None,
+        Field(
+            deprecated=True,
+            description='Visual components to render (DEPRECATED: use surface instead)',
+        ),
+    ] = None
+
+
+class SessionStatus(Enum):
+    active = 'active'
+    pending_handoff = 'pending_handoff'
+    complete = 'complete'
+    terminated = 'terminated'
+
+
+class Type78(Enum):
+    transaction = 'transaction'
+    complete = 'complete'
+
+
+class Price(AdCPBaseModel):
+    amount: float | None = None
+    currency: str | None = None
+
+
+class Intent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action: Annotated[str | None, Field(description="The commerce action (e.g., 'purchase')")] = (
+        None
+    )
+    product: Annotated[dict[str, Any] | None, Field(description='Product details for checkout')] = (
+        None
+    )
+    price: Annotated[Price | None, Field(description='Price information')] = None
+
+
+class ContextForCheckout(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    conversation_summary: Annotated[
+        str | None, Field(description='Summary of the conversation leading to purchase')
+    ] = None
+    applied_offers: Annotated[
+        list[str] | None, Field(description='Offer IDs that were applied during the conversation')
+    ] = None
+
+
+class Handoff(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type78 | None,
+        Field(
+            description='Type of handoff: transaction (ready for ACP checkout) or complete (conversation done)'
+        ),
+    ] = None
+    intent: Annotated[
+        Intent | None,
+        Field(description='For transaction handoffs: what the user wants to purchase'),
+    ] = None
+    context_for_checkout: Annotated[
+        ContextForCheckout | None, Field(description='Context to pass to ACP for seamless checkout')
+    ] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class SiSendMessageResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    session_id: Annotated[str, Field(description='Session identifier')]
+    response: Annotated[Response | None, Field(description="Brand agent's response")] = None
+    mcp_resource_uri: Annotated[
+        str | None,
+        Field(
+            description='MCP resource URI for hosts with MCP Apps support (e.g., ui://si/session-abc123)'
+        ),
+    ] = None
+    session_status: Annotated[
+        SessionStatus,
+        Field(
+            description='Current session status. On a successful response, one of: active, pending_handoff, or complete. Terminated sessions return error codes (SESSION_NOT_FOUND or SESSION_TERMINATED) instead of a success response.',
+            title='SI Session Status',
+        ),
+    ]
+    handoff: Annotated[
+        Handoff | None, Field(description='Handoff request when session_status is pending_handoff')
+    ] = None
+    errors: list[Error] | None = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_terminate_session_request.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_terminate_session_request.py
new file mode 100644
index 000000000..e554f452b
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_terminate_session_request.py
@@ -0,0 +1,79 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_terminate_session_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Reason(Enum):
+    handoff_transaction = 'handoff_transaction'
+    handoff_complete = 'handoff_complete'
+    user_exit = 'user_exit'
+    session_timeout = 'session_timeout'
+    host_terminated = 'host_terminated'
+
+
+class Action(Enum):
+    purchase = 'purchase'
+    subscribe = 'subscribe'
+
+
+class TransactionIntent(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action: Action | None = None
+    product: Annotated[dict[str, Any] | None, Field(description='Product/service details')] = None
+
+
+class TerminationContext(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    summary: Annotated[str | None, Field(description='Summary of the conversation')] = None
+    transaction_intent: Annotated[
+        TransactionIntent | None,
+        Field(description='For handoff_transaction - what user wants to buy'),
+    ] = None
+    cause: Annotated[
+        str | None, Field(description='For host_terminated - why host ended session')
+    ] = None
+
+
+class SiTerminateSessionRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    session_id: Annotated[str, Field(description='Session identifier to terminate')]
+    reason: Annotated[Reason, Field(description='Reason for termination')]
+    termination_context: Annotated[
+        TerminationContext | None, Field(description='Context for the termination')
+    ] = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_terminate_session_response.py b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_terminate_session_response.py
new file mode 100644
index 000000000..e89ff8946
--- /dev/null
+++ b/src/adcp/types/generated_poc/bundled/sponsored_intelligence/si_terminate_session_response.py
@@ -0,0 +1,141 @@
+# generated by datamodel-codegen:
+#   filename:  bundled/sponsored_intelligence/si_terminate_session_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+
+class SessionStatus(Enum):
+    active = 'active'
+    pending_handoff = 'pending_handoff'
+    complete = 'complete'
+    terminated = 'terminated'
+
+
+class AcpHandoff(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    checkout_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="Brand's ACP checkout endpoint. Hosts MUST validate this is HTTPS before opening."
+        ),
+    ] = None
+    checkout_token: Annotated[
+        str | None,
+        Field(
+            description='Opaque token for the checkout flow. The host passes this to the checkout endpoint to correlate the SI session with the transaction.'
+        ),
+    ] = None
+    payload: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Rich checkout context to pass to the ACP endpoint (product details, applied offers, pricing). Alternative to checkout_token for integrations that need structured data.'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this handoff data expires. Hosts should initiate checkout before this time.'
+        ),
+    ] = None
+
+
+class Action(Enum):
+    save_for_later = 'save_for_later'
+    set_reminder = 'set_reminder'
+    subscribe_updates = 'subscribe_updates'
+    none = 'none'
+
+
+class FollowUp(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action: Action | None = None
+    data: Annotated[dict[str, Any] | None, Field(description='Data for follow-up action')] = None
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[
+        str,
+        Field(
+            description='Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.',
+            max_length=64,
+            min_length=1,
+        ),
+    ]
+    message: Annotated[str, Field(description='Human-readable error message')]
+    field: Annotated[
+        str | None,
+        Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
+    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    retry_after: Annotated[
+        float | None,
+        Field(
+            description='Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.',
+            ge=1.0,
+            le=3600.0,
+        ),
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
+
+
+class SiTerminateSessionResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    session_id: Annotated[str, Field(description='Terminated session identifier')]
+    terminated: Annotated[bool, Field(description='Whether session was successfully terminated')]
+    session_status: Annotated[
+        SessionStatus | None,
+        Field(
+            description="Resulting session state. 'complete' for handoff_transaction/handoff_complete, 'terminated' for user_exit/session_timeout/host_terminated.",
+            title='SI Session Status',
+        ),
+    ] = None
+    acp_handoff: Annotated[
+        AcpHandoff | None,
+        Field(description='ACP checkout handoff data. Present when reason is handoff_transaction.'),
+    ] = None
+    follow_up: Annotated[FollowUp | None, Field(description='Suggested follow-up actions')] = None
+    errors: list[Error] | None = None
+    context: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+            title='Context Object',
+        ),
+    ] = None
+    ext: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description='Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.',
+            title='Extension Object',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/collection/collection_list_changed_webhook.py b/src/adcp/types/generated_poc/collection/collection_list_changed_webhook.py
index fb2295067..93ff472b1 100644
--- a/src/adcp/types/generated_poc/collection/collection_list_changed_webhook.py
+++ b/src/adcp/types/generated_poc/collection/collection_list_changed_webhook.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/collection_list_changed_webhook.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -45,7 +45,7 @@ class CollectionListChangedWebhook(AdCPBaseModel):
     signature: Annotated[
         str,
         Field(
-            description="Cryptographic signature of the webhook payload, signed with the agent's private key. Recipients MUST verify this signature."
+            description='HMAC-SHA256 webhook signature over {unix_timestamp}.{raw_http_body_bytes} using the secret exchanged out-of-band when the seller registered with the governance agent. Recipients MUST verify against the X-ADCP-Signature and X-ADCP-Timestamp headers using timing-safe comparison and MUST reject requests where |now - timestamp| > 300 seconds. The body copy of this field is a convenience only — the headers are authoritative. See docs/building/implementation/security#webhook-security.'
         ),
     ]
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/create_collection_list_request.py b/src/adcp/types/generated_poc/collection/create_collection_list_request.py
index 1f037cf68..79eebb0b1 100644
--- a/src/adcp/types/generated_poc/collection/create_collection_list_request.py
+++ b/src/adcp/types/generated_poc/collection/create_collection_list_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/create_collection_list_request.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -49,12 +49,13 @@ class CreateCollectionListRequest(AdCPBaseModel):
         ),
     ] = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for this request. Prevents duplicate collection list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
+    ]
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/create_collection_list_response.py b/src/adcp/types/generated_poc/collection/create_collection_list_response.py
index 0cdc8fb34..13297a33c 100644
--- a/src/adcp/types/generated_poc/collection/create_collection_list_response.py
+++ b/src/adcp/types/generated_poc/collection/create_collection_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/create_collection_list_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 from . import collection_list
 
@@ -23,7 +24,8 @@ class CreateCollectionListResponse(AdCPBaseModel):
     auth_token: Annotated[
         str,
         Field(
-            description='Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time.'
+            description='Token that authorizes sellers to fetch this list via get_collection_list. Only returned at creation time — buyers MUST store it in a secret manager. Scoped to this one list_id; MUST NOT be reused across lists. Governance agents MUST issue a distinct token per seller so per-relationship revocation is possible. Tokens MUST NOT be logged, appear in cache keys, or echo in error responses. delete_collection_list MUST revoke the token immediately; compromise-driven revocation MUST also signal cache invalidation to sellers (reduced cache_valid_until or a list-changed webhook). See Security considerations in docs/governance/collection/tasks/collection_lists.'
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/delete_collection_list_request.py b/src/adcp/types/generated_poc/collection/delete_collection_list_request.py
index 093cb3a2f..a3ffbb962 100644
--- a/src/adcp/types/generated_poc/collection/delete_collection_list_request.py
+++ b/src/adcp/types/generated_poc/collection/delete_collection_list_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/delete_collection_list_request.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -29,10 +29,11 @@ class DeleteCollectionListRequest(AdCPBaseModel):
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
+    ]
diff --git a/src/adcp/types/generated_poc/collection/delete_collection_list_response.py b/src/adcp/types/generated_poc/collection/delete_collection_list_response.py
index fe1a1128c..be3d84c9d 100644
--- a/src/adcp/types/generated_poc/collection/delete_collection_list_response.py
+++ b/src/adcp/types/generated_poc/collection/delete_collection_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/delete_collection_list_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 
 
@@ -18,4 +19,5 @@ class DeleteCollectionListResponse(AdCPBaseModel):
     )
     deleted: Annotated[bool, Field(description='Whether the list was successfully deleted')]
     list_id: Annotated[str, Field(description='ID of the deleted list')]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/get_collection_list_response.py b/src/adcp/types/generated_poc/collection/get_collection_list_response.py
index e4cd0d1e7..d992f4222 100644
--- a/src/adcp/types/generated_poc/collection/get_collection_list_response.py
+++ b/src/adcp/types/generated_poc/collection/get_collection_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/get_collection_list_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,6 +11,7 @@
 from pydantic import AwareDatetime, ConfigDict, Field
 
 from ..core import content_rating as content_rating_1
+from ..core import context as context_1
 from ..core import ext as ext_1
 from ..core import pagination_response
 from ..enums import distribution_identifier_type
@@ -36,7 +37,8 @@ class Kind(Enum):
     rotation = 'rotation'
 
 
-CoverageGap = DistributionId
+class CoverageGap(DistributionId):
+    pass
 
 
 class Collection(AdCPBaseModel):
@@ -95,4 +97,5 @@ class GetCollectionListResponse(AdCPBaseModel):
             description="Collections included in the list despite missing metadata for a filtered dimension. Maps dimension name (e.g., 'genre', 'content_rating') to arrays of distribution identifiers for collections not covered. Only present when filters are applied and some collections lack the filtered metadata."
         ),
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/list_collection_lists_response.py b/src/adcp/types/generated_poc/collection/list_collection_lists_response.py
index cefcbfa6a..ec0bacf26 100644
--- a/src/adcp/types/generated_poc/collection/list_collection_lists_response.py
+++ b/src/adcp/types/generated_poc/collection/list_collection_lists_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/list_collection_lists_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 from ..core import pagination_response
 from . import collection_list
@@ -23,4 +24,5 @@ class ListCollectionListsResponse(AdCPBaseModel):
         Field(description='Array of collection lists (metadata only, not resolved collections)'),
     ]
     pagination: pagination_response.PaginationResponse | None = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/update_collection_list_request.py b/src/adcp/types/generated_poc/collection/update_collection_list_request.py
index 63531d308..31ab517bf 100644
--- a/src/adcp/types/generated_poc/collection/update_collection_list_request.py
+++ b/src/adcp/types/generated_poc/collection/update_collection_list_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/update_collection_list_request.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -49,16 +49,17 @@ class UpdateCollectionListRequest(AdCPBaseModel):
     webhook_url: Annotated[
         AnyUrl | None,
         Field(
-            description='Update the webhook URL for list change notifications (set to empty string to remove)'
+            description='Update the webhook URL for list change notifications (set to empty string to remove). Governance agents MUST validate this URL against SSRF per docs/building/implementation/security#webhook-url-validation-ssrf.'
         ),
     ] = None
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
+    ]
diff --git a/src/adcp/types/generated_poc/collection/update_collection_list_response.py b/src/adcp/types/generated_poc/collection/update_collection_list_response.py
index 1edf6e959..1d3181611 100644
--- a/src/adcp/types/generated_poc/collection/update_collection_list_response.py
+++ b/src/adcp/types/generated_poc/collection/update_collection_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  collection/update_collection_list_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 from . import collection_list
 
@@ -20,4 +21,5 @@ class UpdateCollectionListResponse(AdCPBaseModel):
     list: Annotated[
         collection_list.CollectionList, Field(description='The updated collection list')
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/compliance/comply_test_controller_request.py b/src/adcp/types/generated_poc/compliance/comply_test_controller_request.py
index 0dec00bb3..292ef9c67 100644
--- a/src/adcp/types/generated_poc/compliance/comply_test_controller_request.py
+++ b/src/adcp/types/generated_poc/compliance/comply_test_controller_request.py
@@ -1,194 +1,114 @@
 # generated by datamodel-codegen:
 #   filename:  compliance/comply_test_controller_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from enum import Enum
-from typing import Annotated, Literal
+from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
 from ..core import context as context_1
 from ..core import ext as ext_1
-from ..enums import account_status, creative_status, media_buy_status
 
 
-class Params1(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    account_id: Annotated[str, Field(description='Account to transition')]
-    status: account_status.AccountStatus
+class Scenario(Enum):
+    list_scenarios = 'list_scenarios'
+    force_creative_status = 'force_creative_status'
+    force_account_status = 'force_account_status'
+    force_media_buy_status = 'force_media_buy_status'
+    force_session_status = 'force_session_status'
+    simulate_delivery = 'simulate_delivery'
+    simulate_budget_spend = 'simulate_budget_spend'
 
 
-class Status(Enum):
-    complete = 'complete'
-    terminated = 'terminated'
+class ReportedSpend(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
 
 
-class Params3(AdCPBaseModel):
+class Params(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    session_id: Annotated[str, Field(description='Session to transition')]
+    creative_id: Annotated[
+        str | None, Field(description='Creative to transition. Used by force_creative_status.')
+    ] = None
+    account_id: Annotated[
+        str | None,
+        Field(
+            description='Account to transition. Used by force_account_status and simulate_budget_spend.'
+        ),
+    ] = None
+    media_buy_id: Annotated[
+        str | None,
+        Field(
+            description='Media buy to transition. Used by force_media_buy_status, simulate_delivery, and simulate_budget_spend.'
+        ),
+    ] = None
+    session_id: Annotated[
+        str | None, Field(description='Session to transition. Used by force_session_status.')
+    ] = None
     status: Annotated[
-        Status,
+        str | None,
         Field(
-            description='Target terminal status. Only terminal statuses are valid — active and pending_handoff are session-internal transitions.'
+            description="Target status for the resource. Type depends on scenario: creative-status for force_creative_status, account-status for force_account_status, media-buy-status for force_media_buy_status. For force_session_status, must be 'complete' or 'terminated'."
         ),
-    ]
+    ] = None
+    rejection_reason: Annotated[
+        str | None,
+        Field(
+            description='Reason for rejection. Used by force_creative_status and force_media_buy_status when status = rejected.'
+        ),
+    ] = None
     termination_reason: Annotated[
         str | None,
         Field(
-            description='Reason for termination (e.g., session_timeout, host_terminated, policy_violation). Required when status = terminated.'
+            description='Reason for termination (e.g., session_timeout, host_terminated, policy_violation). Used by force_session_status when status = terminated.'
         ),
     ] = None
-
-
-class ReportedSpend(AdCPBaseModel):
-    amount: Annotated[float, Field(ge=0.0)]
-    currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
-
-
-class Params4(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    clicks: Annotated[int | None, Field(description='Clicks to simulate', ge=0)] = None
-    conversions: Annotated[int | None, Field(description='Conversions to simulate', ge=0)] = None
-    impressions: Annotated[int | None, Field(description='Impressions to simulate', ge=0)] = None
-    media_buy_id: Annotated[str, Field(description='Media buy to add delivery to')]
+    impressions: Annotated[
+        int | None, Field(description='Impressions to simulate. Used by simulate_delivery.', ge=0)
+    ] = None
+    clicks: Annotated[
+        int | None, Field(description='Clicks to simulate. Used by simulate_delivery.', ge=0)
+    ] = None
+    conversions: Annotated[
+        int | None, Field(description='Conversions to simulate. Used by simulate_delivery.', ge=0)
+    ] = None
     reported_spend: Annotated[
         ReportedSpend | None,
-        Field(description='Spend as reported in delivery data. Does not affect budget.'),
+        Field(
+            description='Spend as reported in delivery data. Does not affect budget. Used by simulate_delivery.'
+        ),
     ] = None
-
-
-class Params5(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    account_id: Annotated[str, Field(description='Account (for account-level budget)')]
-    media_buy_id: Annotated[str | None, Field(description='Media buy (for buy-level budget)')] = (
-        None
-    )
     spend_percentage: Annotated[
-        float, Field(description='Spend to this percentage of budget (0–100)', ge=0.0, le=100.0)
-    ]
-
-
-class Params6(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    account_id: Annotated[str | None, Field(description='Account (for account-level budget)')] = (
-        None
-    )
-    media_buy_id: Annotated[str, Field(description='Media buy (for buy-level budget)')]
-    spend_percentage: Annotated[
-        float, Field(description='Spend to this percentage of budget (0–100)', ge=0.0, le=100.0)
-    ]
-
-
-class ComplyTestControllerRequest1(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    scenario: Literal['list_scenarios']
-
-
-class Params(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    creative_id: Annotated[str, Field(description='Creative to transition')]
-    rejection_reason: Annotated[
-        str | None, Field(description='Reason for rejection. Required when status = rejected.')
+        float | None,
+        Field(
+            description='Spend to this percentage of budget (0–100). Used by simulate_budget_spend.',
+            ge=0.0,
+            le=100.0,
+        ),
     ] = None
-    status: creative_status.CreativeStatus
-
-
-class ComplyTestControllerRequest2(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    params: Params
-    scenario: Literal['force_creative_status']
 
 
-class ComplyTestControllerRequest3(AdCPBaseModel):
+class ComplyTestControllerRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    params: Params1
-    scenario: Literal['force_account_status']
-
-
-class Params2(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    media_buy_id: Annotated[str, Field(description='Media buy to transition')]
-    rejection_reason: Annotated[
-        str | None, Field(description='Reason for rejection. Required when status = rejected.')
+    scenario: Annotated[
+        Scenario,
+        Field(
+            description="Test scenario to execute. 'list_scenarios' discovers supported scenarios. Others trigger state transitions for the specified domain."
+        ),
+    ]
+    params: Annotated[
+        Params | None,
+        Field(
+            description='Scenario-specific parameters. Required for all scenarios except list_scenarios.'
+        ),
     ] = None
-    status: media_buy_status.MediaBuyStatus
-
-
-class ComplyTestControllerRequest4(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    params: Params2
-    scenario: Literal['force_media_buy_status']
-
-
-class ComplyTestControllerRequest5(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    params: Params3
-    scenario: Literal['force_session_status']
-
-
-class ComplyTestControllerRequest6(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    params: Params4
-    scenario: Literal['simulate_delivery']
-
-
-class ComplyTestControllerRequest7(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    params: Params5 | Params6
-    scenario: Literal['simulate_budget_spend']
-
-
-ComplyTestControllerRequest = (
-    ComplyTestControllerRequest1
-    | ComplyTestControllerRequest2
-    | ComplyTestControllerRequest3
-    | ComplyTestControllerRequest4
-    | ComplyTestControllerRequest5
-    | ComplyTestControllerRequest6
-    | ComplyTestControllerRequest7
-)
diff --git a/src/adcp/types/generated_poc/compliance/comply_test_controller_response.py b/src/adcp/types/generated_poc/compliance/comply_test_controller_response.py
index 102429578..ef0e5ce8d 100644
--- a/src/adcp/types/generated_poc/compliance/comply_test_controller_response.py
+++ b/src/adcp/types/generated_poc/compliance/comply_test_controller_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  compliance/comply_test_controller_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -37,58 +37,58 @@ class ComplyTestControllerResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    success: Literal[True]
+    scenarios: Annotated[list[Scenario], Field(description='Scenarios this seller has implemented')]
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    scenarios: Annotated[list[Scenario], Field(description='Scenarios this seller has implemented')]
-    success: Literal[True]
 
 
 class ComplyTestControllerResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    success: Literal[True]
+    previous_state: Annotated[str, Field(description='State before this transition')]
     current_state: Annotated[str, Field(description='State after this transition')]
-    ext: ext_1.ExtensionObject | None = None
     message: Annotated[
         str | None, Field(description='Human-readable description of the transition')
     ] = None
-    previous_state: Annotated[str, Field(description='State before this transition')]
-    success: Literal[True]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class ComplyTestControllerResponse3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    success: Literal[True]
+    simulated: Annotated[
+        dict[str, Any],
+        Field(description='Values injected or applied by this call. Shape depends on scenario.'),
+    ]
     cumulative: Annotated[
         dict[str, Any] | None,
         Field(description='Running totals across all simulation calls (simulate_delivery only)'),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     message: str | None = None
-    simulated: Annotated[
-        dict[str, Any],
-        Field(description='Values injected or applied by this call. Shape depends on scenario.'),
-    ]
-    success: Literal[True]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class ComplyTestControllerResponse4(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    current_state: Annotated[
-        str | None, Field(description='Current state of the entity, or null if not found')
-    ] = None
+    success: Literal[False]
     error: Annotated[Error, Field(description='Structured error code')]
     error_detail: Annotated[
         str | None, Field(description='Human-readable explanation of the failure')
     ] = None
+    current_state: Annotated[
+        str | None, Field(description='Current state of the entity, or null if not found')
+    ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    success: Literal[False]
 
 
 ComplyTestControllerResponse = (
diff --git a/src/adcp/types/generated_poc/content_standards/artifact.py b/src/adcp/types/generated_poc/content_standards/artifact.py
index 34053fc57..48283c9b5 100644
--- a/src/adcp/types/generated_poc/content_standards/artifact.py
+++ b/src/adcp/types/generated_poc/content_standards/artifact.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/artifact.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,13 +14,6 @@
 from ..core import provenance as provenance_1
 
 
-class ContentFormat(Enum):
-    text_plain = 'text/plain'
-    text_markdown = 'text/markdown'
-    text_html = 'text/html'
-    application_json = 'application/json'
-
-
 class Role(Enum):
     title = 'title'
     paragraph = 'paragraph'
@@ -31,6 +24,13 @@ class Role(Enum):
     description = 'description'
 
 
+class ContentFormat(Enum):
+    text_plain = 'text/plain'
+    text_markdown = 'text/markdown'
+    text_html = 'text/html'
+    application_json = 'application/json'
+
+
 class TranscriptFormat(Enum):
     text_plain = 'text/plain'
     text_markdown = 'text/markdown'
@@ -51,26 +51,12 @@ class TranscriptSource1(Enum):
     generated = 'generated'
 
 
-class Identifiers(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
-    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
-    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
-    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
-    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
-
-
 class Metadata(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    author: Annotated[str | None, Field(description='Artifact author name')] = None
     canonical: Annotated[AnyUrl | None, Field(description='Canonical URL')] = None
-    json_ld: Annotated[
-        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
-    ] = None
+    author: Annotated[str | None, Field(description='Artifact author name')] = None
     keywords: Annotated[str | None, Field(description='Artifact keywords')] = None
     open_graph: Annotated[
         dict[str, Any] | None, Field(description='Open Graph protocol metadata')
@@ -78,6 +64,20 @@ class Metadata(AdCPBaseModel):
     twitter_card: Annotated[dict[str, Any] | None, Field(description='Twitter Card metadata')] = (
         None
     )
+    json_ld: Annotated[
+        list[dict[str, Any]] | None, Field(description='JSON-LD structured data (schema.org)')
+    ] = None
+
+
+class Identifiers(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    apple_podcast_id: Annotated[str | None, Field(description='Apple Podcasts ID')] = None
+    spotify_collection_id: Annotated[str | None, Field(description='Spotify collection ID')] = None
+    podcast_guid: Annotated[str | None, Field(description='Podcast GUID (from RSS feed)')] = None
+    youtube_video_id: Annotated[str | None, Field(description='YouTube video ID')] = None
+    rss_url: Annotated[AnyUrl | None, Field(description='RSS feed URL')] = None
 
 
 class AssetAccess1(AdCPBaseModel):
@@ -91,11 +91,11 @@ class Provider(Enum):
 
 
 class AssetAccess2(AdCPBaseModel):
+    method: Literal['service_account']
+    provider: Annotated[Provider, Field(description='Cloud provider')]
     credentials: Annotated[
         dict[str, Any] | None, Field(description='Service account credentials')
     ] = None
-    method: Literal['service_account']
-    provider: Annotated[Provider, Field(description='Cloud provider')]
 
 
 class AssetAccess3(AdCPBaseModel):
@@ -116,6 +116,13 @@ def __getattr__(self, name: str) -> Any:
 
 
 class Assets(AdCPBaseModel):
+    type: Literal['text']
+    role: Annotated[
+        Role | None,
+        Field(
+            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
+        ),
+    ] = None
     content: Annotated[
         str,
         Field(
@@ -129,54 +136,44 @@ class Assets(AdCPBaseModel):
             description='MIME type indicating how to parse the content field. Default: text/plain.'
         ),
     ] = ContentFormat.text_plain
-    heading_level: Annotated[
-        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
-    ] = None
     language: Annotated[
         str | None,
         Field(
             description="BCP 47 language tag for this text (e.g., 'en', 'es-MX'). Useful when artifact contains mixed-language content."
         ),
     ] = None
+    heading_level: Annotated[
+        int | None, Field(description='Heading level (1-6), only for role=heading', ge=1, le=6)
+    ] = None
     provenance: Annotated[
         provenance_1.Provenance | None,
         Field(description='Provenance for this text block, overrides artifact-level provenance'),
     ] = None
-    role: Annotated[
-        Role | None,
-        Field(
-            description="Role of this text in the document. Use 'title' for the main artifact title, 'description' for summaries."
-        ),
-    ] = None
-    type: Literal['text']
 
 
 class Assets1(AdCPBaseModel):
+    type: Literal['image']
+    url: Annotated[AnyUrl, Field(description='Image URL')]
     access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
         None
     )
     alt_text: Annotated[str | None, Field(description='Alt text or image description')] = None
     caption: Annotated[str | None, Field(description='Image caption')] = None
+    width: Annotated[int | None, Field(description='Image width in pixels')] = None
     height: Annotated[int | None, Field(description='Image height in pixels')] = None
     provenance: Annotated[
         provenance_1.Provenance | None,
         Field(description='Provenance for this image, overrides artifact-level provenance'),
     ] = None
-    type: Literal['image']
-    url: Annotated[AnyUrl, Field(description='Image URL')]
-    width: Annotated[int | None, Field(description='Image width in pixels')] = None
 
 
 class Assets2(AdCPBaseModel):
+    type: Literal['video']
+    url: Annotated[AnyUrl, Field(description='Video URL')]
     access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
         None
     )
     duration_ms: Annotated[int | None, Field(description='Video duration in milliseconds')] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(description='Provenance for this video, overrides artifact-level provenance'),
-    ] = None
-    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
     transcript: Annotated[
         str | None,
         Field(
@@ -193,19 +190,20 @@ class Assets2(AdCPBaseModel):
     transcript_source: Annotated[
         TranscriptSource | None, Field(description='How the transcript was generated')
     ] = None
-    type: Literal['video']
-    url: Annotated[AnyUrl, Field(description='Video URL')]
+    thumbnail_url: Annotated[AnyUrl | None, Field(description='Video thumbnail URL')] = None
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(description='Provenance for this video, overrides artifact-level provenance'),
+    ] = None
 
 
 class Assets3(AdCPBaseModel):
+    type: Literal['audio']
+    url: Annotated[AnyUrl, Field(description='Audio URL')]
     access: Annotated[AssetAccess | None, Field(description='Authentication for secured URLs')] = (
         None
     )
     duration_ms: Annotated[int | None, Field(description='Audio duration in milliseconds')] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(description='Provenance for this audio, overrides artifact-level provenance'),
-    ] = None
     transcript: Annotated[
         str | None,
         Field(
@@ -222,67 +220,69 @@ class Assets3(AdCPBaseModel):
     transcript_source: Annotated[
         TranscriptSource1 | None, Field(description='How the transcript was generated')
     ] = None
-    type: Literal['audio']
-    url: Annotated[AnyUrl, Field(description='Audio URL')]
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(description='Provenance for this audio, overrides artifact-level provenance'),
+    ] = None
 
 
 class Artifact(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    property_rid: Annotated[
+        str,
+        Field(
+            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+        ),
+    ]
     artifact_id: Annotated[
         str,
         Field(
             description="Identifier for this artifact within the property. The property owner defines the scheme (e.g., 'article_12345', 'episode_42_segment_3', 'post_abc123')."
         ),
     ]
-    assets: Annotated[
-        list[Assets | Assets1 | Assets2 | Assets3],
+    variant_id: Annotated[
+        str | None,
         Field(
-            description='Artifact assets in document flow order - text blocks, images, video, audio',
-            max_length=200,
+            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
         ),
-    ]
+    ] = None
     format_id: Annotated[
         format_id_1.FormatId | None,
         Field(
             description='Optional reference to a format definition. Uses the same format registry as creative formats.'
         ),
     ] = None
-    identifiers: Annotated[
-        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
+        ),
+    ] = None
+    published_time: Annotated[
+        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
     ] = None
     last_update_time: Annotated[
         AwareDatetime | None,
         Field(description='When the artifact was last modified (ISO 8601 format)'),
     ] = None
-    metadata: Annotated[
-        Metadata | None, Field(description='Rich metadata extracted from the artifact')
-    ] = None
-    property_rid: Annotated[
-        str,
+    assets: Annotated[
+        list[Assets | Assets1 | Assets2 | Assets3],
         Field(
-            description='Stable property identifier from the property catalog. Globally unique across the ecosystem.'
+            description='Artifact assets in document flow order - text blocks, images, video, audio',
+            max_length=200,
         ),
     ]
+    metadata: Annotated[
+        Metadata | None, Field(description='Rich metadata extracted from the artifact')
+    ] = None
     provenance: Annotated[
         provenance_1.Provenance | None,
         Field(
             description='Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact — individual assets can override with their own provenance.'
         ),
     ] = None
-    published_time: Annotated[
-        AwareDatetime | None, Field(description='When the artifact was published (ISO 8601 format)')
-    ] = None
-    url: Annotated[
-        AnyUrl | None,
-        Field(
-            description='Optional URL for this artifact (web page, podcast feed, video page). Not all artifacts have URLs (e.g., Instagram content, podcast segments, TV scenes).'
-        ),
-    ] = None
-    variant_id: Annotated[
-        str | None,
-        Field(
-            description="Identifies a specific variant of this artifact. Use for A/B tests, translations, or temporal versions. Examples: 'en', 'es-MX', 'v2', 'headline_test_b'. The combination of artifact_id + variant_id must be unique."
-        ),
+    identifiers: Annotated[
+        Identifiers | None, Field(description='Platform-specific identifiers for this artifact')
     ] = None
diff --git a/src/adcp/types/generated_poc/content_standards/artifact_webhook_payload.py b/src/adcp/types/generated_poc/content_standards/artifact_webhook_payload.py
index f93461efc..fa44512d8 100644
--- a/src/adcp/types/generated_poc/content_standards/artifact_webhook_payload.py
+++ b/src/adcp/types/generated_poc/content_standards/artifact_webhook_payload.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/artifact_webhook_payload.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,12 +14,12 @@
 
 
 class Pagination(AdCPBaseModel):
-    batch_number: Annotated[int | None, Field(description='Current batch number (1-indexed)')] = (
-        None
-    )
     total_artifacts: Annotated[
         int | None, Field(description='Total artifacts in the delivery period')
     ] = None
+    batch_number: Annotated[int | None, Field(description='Current batch number (1-indexed)')] = (
+        None
+    )
     total_batches: Annotated[
         int | None, Field(description='Total batches for this delivery period')
     ] = None
@@ -43,8 +43,8 @@ class ArtifactWebhookPayload(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    artifacts: Annotated[
-        list[Artifact], Field(description='Content artifacts from delivered impressions')
+    media_buy_id: Annotated[
+        str, Field(description='Media buy identifier these artifacts belong to')
     ]
     batch_id: Annotated[
         str,
@@ -52,13 +52,13 @@ class ArtifactWebhookPayload(AdCPBaseModel):
             description='Unique identifier for this batch of artifacts. Use for deduplication and acknowledgment.'
         ),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    media_buy_id: Annotated[
-        str, Field(description='Media buy identifier these artifacts belong to')
+    timestamp: Annotated[
+        AwareDatetime, Field(description='When this batch was generated (ISO 8601)')
+    ]
+    artifacts: Annotated[
+        list[Artifact], Field(description='Content artifacts from delivered impressions')
     ]
     pagination: Annotated[
         Pagination | None, Field(description='Pagination info when batching large artifact sets')
     ] = None
-    timestamp: Annotated[
-        AwareDatetime, Field(description='When this batch was generated (ISO 8601)')
-    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/calibrate_content_request.py b/src/adcp/types/generated_poc/content_standards/calibrate_content_request.py
index 04377f818..fada58ba5 100644
--- a/src/adcp/types/generated_poc/content_standards/calibrate_content_request.py
+++ b/src/adcp/types/generated_poc/content_standards/calibrate_content_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/calibrate_content_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,17 +9,30 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import Field
 
+from ..core import context as context_1
+from ..core import ext as ext_1
 from . import artifact as artifact_1
 
 
 class CalibrateContentRequest(AdCPBaseModel):
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    standards_id: Annotated[str, Field(description='Standards configuration to calibrate against')]
     artifact: Annotated[artifact_1.Artifact, Field(description='Artifact to evaluate')]
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
-    standards_id: Annotated[str, Field(description='Standards configuration to calibrate against')]
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/calibrate_content_response.py b/src/adcp/types/generated_poc/content_standards/calibrate_content_response.py
index e6dfbcf88..d8d4aa95f 100644
--- a/src/adcp/types/generated_poc/content_standards/calibrate_content_response.py
+++ b/src/adcp/types/generated_poc/content_standards/calibrate_content_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/calibrate_content_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,6 +15,11 @@
 from ..core import ext as ext_1
 
 
+class Verdict(Enum):
+    pass_ = 'pass'
+    fail = 'fail'
+
+
 class Status(Enum):
     passed = 'passed'
     failed = 'failed'
@@ -23,44 +28,56 @@ class Status(Enum):
 
 
 class Feature(AdCPBaseModel):
-    explanation: Annotated[
-        str | None,
-        Field(description='Human-readable explanation of why this feature passed or failed'),
-    ] = None
     feature_id: Annotated[
         str,
         Field(
-            description='Which feature was evaluated (e.g., brand_safety, brand_suitability, competitor_adjacency)'
+            description="Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'competitor_adjacency'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact'. Reserved prefixes: 'record:', 'delivery:'."
         ),
     ]
     status: Annotated[Status, Field(description='Evaluation status for this feature')]
-
-
-class Verdict(Enum):
-    pass_ = 'pass'
-    fail = 'fail'
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Policy ID that triggered this result. Enables the calibration loop to iterate on specific policies by correlating sample outcomes to policy ids.'
+        ),
+    ] = None
+    explanation: Annotated[
+        str | None,
+        Field(description='Human-readable explanation of why this feature passed or failed'),
+    ] = None
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
 
 
 class CalibrateContentResponse1(AdCPBaseModel):
+    verdict: Annotated[
+        Verdict, Field(description='Overall pass/fail verdict for the content evaluation')
+    ]
     confidence: Annotated[
         float | None, Field(description='Model confidence in the verdict (0-1)', ge=0.0, le=1.0)
     ] = None
-    context: context_1.ContextObject | None = None
     explanation: Annotated[
         str | None, Field(description='Detailed natural language explanation of the decision')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     features: Annotated[
-        list[Feature] | None, Field(description='Per-feature breakdown with explanations')
+        list[Feature] | None,
+        Field(
+            description='Per-feature breakdown with explanations. Mirrors validate_content_delivery feature shape so calibration loops can correlate against production verdicts by policy_id.'
+        ),
     ] = None
-    verdict: Annotated[
-        Verdict, Field(description='Overall pass/fail verdict for the content evaluation')
-    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class CalibrateContentResponse2(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
     errors: list[error.Error]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/content_standards/content_standards.py b/src/adcp/types/generated_poc/content_standards/content_standards.py
index c7c46ffb3..0cac064e2 100644
--- a/src/adcp/types/generated_poc/content_standards/content_standards.py
+++ b/src/adcp/types/generated_poc/content_standards/content_standards.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/content_standards.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,27 +10,35 @@
 from pydantic import Field
 
 from ..core import ext as ext_1
-from ..core import pricing_option
+from ..core import vendor_pricing_option
 from ..enums import channels
+from ..governance import policy_entry
 from . import artifact
 
 
 class CalibrationExemplars(AdCPBaseModel):
-    fail: Annotated[
-        list[artifact.Artifact] | None,
-        Field(description='Artifacts that fail the content standards'),
-    ] = None
     pass_: Annotated[
         list[artifact.Artifact] | None,
         Field(alias='pass', description='Artifacts that pass the content standards'),
     ] = None
+    fail: Annotated[
+        list[artifact.Artifact] | None,
+        Field(description='Artifacts that fail the content standards'),
+    ] = None
 
 
 class ContentStandards(AdCPBaseModel):
-    calibration_exemplars: Annotated[
-        CalibrationExemplars | None,
+    standards_id: Annotated[
+        str, Field(description='Unique identifier for this standards configuration')
+    ]
+    name: Annotated[
+        str | None, Field(description='Human-readable name for this standards configuration')
+    ] = None
+    countries_all: Annotated[
+        list[str] | None,
         Field(
-            description='Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.'
+            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            min_length=1,
         ),
     ] = None
     channels_any: Annotated[
@@ -40,37 +48,31 @@ class ContentStandards(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    countries_all: Annotated[
+    languages_any: Annotated[
         list[str] | None,
         Field(
-            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
             min_length=1,
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    languages_any: Annotated[
-        list[str] | None,
+    policies: Annotated[
+        list[policy_entry.PolicyEntry] | None,
         Field(
-            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
+            description='Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id; governance findings reference the policy_id that triggered them.',
             min_length=1,
         ),
     ] = None
-    name: Annotated[
-        str | None, Field(description='Human-readable name for this standards configuration')
-    ] = None
-    policy: Annotated[
-        str | None,
+    calibration_exemplars: Annotated[
+        CalibrationExemplars | None,
         Field(
-            description='Natural language policy describing acceptable and unacceptable content contexts. Used by LLMs and human reviewers to make judgments.'
+            description='Training/test set to calibrate policy interpretation. Provides concrete examples of pass/fail decisions.'
         ),
     ] = None
     pricing_options: Annotated[
-        list[pricing_option.PricingOption] | None,
+        list[vendor_pricing_option.VendorPricingOption] | None,
         Field(
             description='Pricing options for this content standards service. The buyer passes the selected pricing_option_id in report_usage for billing verification.',
             min_length=1,
         ),
     ] = None
-    standards_id: Annotated[
-        str, Field(description='Unique identifier for this standards configuration')
-    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/create_content_standards_request.py b/src/adcp/types/generated_poc/content_standards/create_content_standards_request.py
index 8aa21f4b1..623276a17 100644
--- a/src/adcp/types/generated_poc/content_standards/create_content_standards_request.py
+++ b/src/adcp/types/generated_poc/content_standards/create_content_standards_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/create_content_standards_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -12,36 +12,18 @@
 from ..core import context as context_1
 from ..core import ext as ext_1
 from ..enums import channels
+from ..governance import policy_entry
 from . import artifact
 
 
-class Fail(AdCPBaseModel):
-    language: Annotated[
-        str | None, Field(description='BCP 47 language tag for content at this URL')
-    ] = None
-    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
-    value: Annotated[
-        AnyUrl,
+class Scope(AdCPBaseModel):
+    countries_all: Annotated[
+        list[str] | None,
         Field(
-            description="Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            min_length=1,
         ),
-    ]
-
-
-class Pass(AdCPBaseModel):
-    language: Annotated[
-        str | None, Field(description='BCP 47 language tag for content at this URL')
     ] = None
-    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
-    value: Annotated[
-        AnyUrl,
-        Field(
-            description="Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
-        ),
-    ]
-
-
-class Scope(AdCPBaseModel):
     channels_any: Annotated[
         list[channels.MediaChannel] | None,
         Field(
@@ -49,65 +31,94 @@ class Scope(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    countries_all: Annotated[
-        list[str] | None,
+    languages_any: Annotated[
+        list[str],
         Field(
-            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
             min_length=1,
         ),
-    ] = None
+    ]
     description: Annotated[
         str | None, Field(description='Human-readable description of this scope')
     ] = None
-    languages_any: Annotated[
-        list[str],
+
+
+class Pass(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
         Field(
-            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
-            min_length=1,
+            description="Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
+        ),
+    ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
+    ] = None
+
+
+class Fail(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
+        Field(
+            description="Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
         ),
     ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
+    ] = None
 
 
 class CalibrationExemplars(AdCPBaseModel):
-    fail: Annotated[
-        list[Fail | artifact.Artifact] | None, Field(description='Content that fails the standards')
-    ] = None
     pass_: Annotated[
         list[Pass | artifact.Artifact] | None,
         Field(alias='pass', description='Content that passes the standards'),
     ] = None
+    fail: Annotated[
+        list[Fail | artifact.Artifact] | None, Field(description='Content that fails the standards')
+    ] = None
 
 
 class CreateContentStandardsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    scope: Annotated[Scope, Field(description='Where this standards configuration applies')]
+    registry_policy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Registry policy IDs to use as the evaluation basis for this content standard. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria. The 'policy' field becomes optional when registry_policy_ids is provided."
+        ),
+    ] = None
+    policies: Annotated[
+        list[policy_entry.PolicyEntry] | None,
+        Field(
+            description='Bespoke policies for this content-standards configuration, using the same shape as registry entries. Each policy is addressable by policy_id and carries its own enforcement (must|should); governance findings reference the policy_id that triggered them. Inline bespoke policies can omit version/name/category (defaulted by the server). Combines with registry_policy_ids — registry policies and bespoke policies are both evaluated. Bespoke policy_ids MUST be flat (no colons/slashes) to avoid collision with namespaced registry ids.',
+            min_length=1,
+        ),
+    ] = None
     calibration_exemplars: Annotated[
         CalibrationExemplars | None,
         Field(
             description='Training/test set to calibrate policy interpretation. Use URL references for pages to be fetched and analyzed, or full artifacts for pre-extracted content.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for this request. Prevents duplicate content standards creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
-        ),
-    ] = None
-    policy: Annotated[
-        str,
-        Field(
-            description='Natural language policy describing acceptable and unacceptable content contexts. Used by LLMs and human reviewers to make judgments. Optional when registry_policy_ids is provided.'
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
     ]
-    registry_policy_ids: Annotated[
-        list[str] | None,
-        Field(
-            description="Registry policy IDs to use as the evaluation basis for this content standard. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria. The 'policy' field becomes optional when registry_policy_ids is provided."
-        ),
-    ] = None
-    scope: Annotated[Scope, Field(description='Where this standards configuration applies')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/create_content_standards_response.py b/src/adcp/types/generated_poc/content_standards/create_content_standards_response.py
index ddd7aa536..51a034d5a 100644
--- a/src/adcp/types/generated_poc/content_standards/create_content_standards_response.py
+++ b/src/adcp/types/generated_poc/content_standards/create_content_standards_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/create_content_standards_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,14 +15,15 @@
 
 
 class CreateContentStandardsResponse1(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     standards_id: Annotated[
         str, Field(description='Unique identifier for the created standards configuration')
     ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class CreateContentStandardsResponse2(AdCPBaseModel):
+    errors: list[error.Error]
     conflicting_standards_id: Annotated[
         str | None,
         Field(
@@ -30,7 +31,6 @@ class CreateContentStandardsResponse2(AdCPBaseModel):
         ),
     ] = None
     context: context_1.ContextObject | None = None
-    errors: list[error.Error]
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/content_standards/get_content_standards_request.py b/src/adcp/types/generated_poc/content_standards/get_content_standards_request.py
index 700636808..6d93abd8b 100644
--- a/src/adcp/types/generated_poc/content_standards/get_content_standards_request.py
+++ b/src/adcp/types/generated_poc/content_standards/get_content_standards_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/get_content_standards_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,8 +14,16 @@
 
 
 class GetContentStandardsRequest(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     standards_id: Annotated[
         str, Field(description='Identifier for the standards configuration to retrieve')
     ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/get_content_standards_response.py b/src/adcp/types/generated_poc/content_standards/get_content_standards_response.py
index 1ece26ed5..a092fe979 100644
--- a/src/adcp/types/generated_poc/content_standards/get_content_standards_response.py
+++ b/src/adcp/types/generated_poc/content_standards/get_content_standards_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/get_content_standards_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,13 +16,14 @@
 
 
 class GetContentStandardsResponse2(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
     errors: list[error.Error]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
 class GetContentStandardsResponse1(ContentStandards):
     context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 GetContentStandardsResponse = GetContentStandardsResponse1 | GetContentStandardsResponse2
diff --git a/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_request.py b/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_request.py
index be9aede96..e369b780e 100644
--- a/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_request.py
+++ b/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/get_media_buy_artifacts_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,53 +14,61 @@
 from ..core import ext as ext_1
 
 
+class TimeRange(AdCPBaseModel):
+    start: Annotated[AwareDatetime | None, Field(description='Start of time range (inclusive)')] = (
+        None
+    )
+    end: Annotated[AwareDatetime | None, Field(description='End of time range (exclusive)')] = None
+
+
 class Pagination(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    cursor: Annotated[
-        str | None,
-        Field(description='Opaque cursor from a previous response to fetch the next page'),
-    ] = None
     max_results: Annotated[
         int | None,
         Field(description='Maximum number of artifacts to return per page', ge=1, le=10000),
     ] = 1000
-
-
-class TimeRange(AdCPBaseModel):
-    end: Annotated[AwareDatetime | None, Field(description='End of time range (exclusive)')] = None
-    start: Annotated[AwareDatetime | None, Field(description='Start of time range (inclusive)')] = (
-        None
-    )
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
 
 
 class GetMediaBuyArtifactsRequest(AdCPBaseModel):
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     account: Annotated[
         account_ref.AccountReference | None,
         Field(
             description='Filter artifacts to a specific account. When omitted, returns artifacts across all accessible accounts.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
+    media_buy_id: Annotated[str, Field(description='Media buy to get artifacts from')]
+    package_ids: Annotated[
+        list[str] | None,
+        Field(description='Filter to specific packages within the media buy', min_length=1),
+    ] = None
     failures_only: Annotated[
         bool | None,
         Field(
             description="When true, only return artifacts where the seller's local model returned local_verdict: 'fail'. Useful for auditing false positives. Not useful when the seller does not run a local evaluation model (all verdicts are 'unevaluated')."
         ),
     ] = False
-    media_buy_id: Annotated[str, Field(description='Media buy to get artifacts from')]
-    package_ids: Annotated[
-        list[str] | None,
-        Field(description='Filter to specific packages within the media buy', min_length=1),
-    ] = None
+    time_range: Annotated[TimeRange | None, Field(description='Filter to specific time period')] = (
+        None
+    )
     pagination: Annotated[
         Pagination | None,
         Field(
             description='Pagination parameters. Uses higher limits than standard pagination because artifact result sets can be very large.'
         ),
     ] = None
-    time_range: Annotated[TimeRange | None, Field(description='Filter to specific time period')] = (
-        None
-    )
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_response.py b/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_response.py
index 7c9a67539..e211282a0 100644
--- a/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_response.py
+++ b/src/adcp/types/generated_poc/content_standards/get_media_buy_artifacts_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/get_media_buy_artifacts_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -29,9 +29,12 @@ class LocalVerdict(Enum):
 
 
 class CollectionInfo(AdCPBaseModel):
-    effective_rate: Annotated[
-        float | None,
-        Field(description='Actual collection rate achieved (total_collected / total_deliveries)'),
+    total_deliveries: Annotated[
+        int | None, Field(description='Total deliveries in the requested time range')
+    ] = None
+    total_collected: Annotated[
+        int | None,
+        Field(description="Total artifacts collected (per the buy's sampling configuration)"),
     ] = None
     returned_count: Annotated[
         int | None,
@@ -39,48 +42,46 @@ class CollectionInfo(AdCPBaseModel):
             description='Number of artifacts in this response (may be less than total_collected due to pagination or filters)'
         ),
     ] = None
-    total_collected: Annotated[
-        int | None,
-        Field(description="Total artifacts collected (per the buy's sampling configuration)"),
-    ] = None
-    total_deliveries: Annotated[
-        int | None, Field(description='Total deliveries in the requested time range')
+    effective_rate: Annotated[
+        float | None,
+        Field(description='Actual collection rate achieved (total_collected / total_deliveries)'),
     ] = None
 
 
 class GetMediaBuyArtifactsResponse2(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
     errors: list[error.Error]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
 class Artifact(AdCPBaseModel):
+    record_id: Annotated[str, Field(description='Unique identifier for this delivery record')]
+    timestamp: Annotated[AwareDatetime | None, Field(description='When the delivery occurred')] = (
+        None
+    )
+    package_id: Annotated[
+        str | None, Field(description='Which package this delivery belongs to')
+    ] = None
     artifact: Annotated[artifact_1.Artifact, Field(description='Full artifact with content assets')]
+    country: Annotated[
+        str | None, Field(description='ISO 3166-1 alpha-2 country code where delivery occurred')
+    ] = None
+    channel: Annotated[
+        str | None, Field(description='Channel type (e.g., display, video, audio, social)')
+    ] = None
     brand_context: Annotated[
         BrandContext | None,
         Field(
             description='Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.'
         ),
     ] = None
-    channel: Annotated[
-        str | None, Field(description='Channel type (e.g., display, video, audio, social)')
-    ] = None
-    country: Annotated[
-        str | None, Field(description='ISO 3166-1 alpha-2 country code where delivery occurred')
-    ] = None
     local_verdict: Annotated[
         LocalVerdict | None, Field(description="Seller's local model verdict for this artifact")
     ] = None
-    package_id: Annotated[
-        str | None, Field(description='Which package this delivery belongs to')
-    ] = None
-    record_id: Annotated[str, Field(description='Unique identifier for this delivery record')]
-    timestamp: Annotated[AwareDatetime | None, Field(description='When the delivery occurred')] = (
-        None
-    )
 
 
 class GetMediaBuyArtifactsResponse1(AdCPBaseModel):
+    media_buy_id: Annotated[str, Field(description='Media buy these artifacts belong to')]
     artifacts: Annotated[
         list[Artifact], Field(description='Delivery records with full artifact content')
     ]
@@ -90,10 +91,9 @@ class GetMediaBuyArtifactsResponse1(AdCPBaseModel):
             description='Information about artifact collection for this media buy. Sampling is configured at buy creation time — this reports what was actually collected.'
         ),
     ] = None
+    pagination: pagination_response.PaginationResponse | None = None
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    media_buy_id: Annotated[str, Field(description='Media buy these artifacts belong to')]
-    pagination: pagination_response.PaginationResponse | None = None
 
 
 GetMediaBuyArtifactsResponse = GetMediaBuyArtifactsResponse1 | GetMediaBuyArtifactsResponse2
diff --git a/src/adcp/types/generated_poc/content_standards/list_content_standards_request.py b/src/adcp/types/generated_poc/content_standards/list_content_standards_request.py
index 3bfe63777..ed9ced877 100644
--- a/src/adcp/types/generated_poc/content_standards/list_content_standards_request.py
+++ b/src/adcp/types/generated_poc/content_standards/list_content_standards_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/list_content_standards_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,16 +19,24 @@ class ListContentStandardsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     channels: Annotated[
         list[channels_1.MediaChannel] | None, Field(description='Filter by channel', min_length=1)
     ] = None
-    context: context_1.ContextObject | None = None
+    languages: Annotated[
+        list[str] | None, Field(description='Filter by BCP 47 language tags', min_length=1)
+    ] = None
     countries: Annotated[
         list[str] | None,
         Field(description='Filter by ISO 3166-1 alpha-2 country codes', min_length=1),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    languages: Annotated[
-        list[str] | None, Field(description='Filter by BCP 47 language tags', min_length=1)
-    ] = None
     pagination: pagination_request.PaginationRequest | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/list_content_standards_response.py b/src/adcp/types/generated_poc/content_standards/list_content_standards_response.py
index b7ab302cb..2492747e3 100644
--- a/src/adcp/types/generated_poc/content_standards/list_content_standards_response.py
+++ b/src/adcp/types/generated_poc/content_standards/list_content_standards_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/list_content_standards_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,19 +17,19 @@
 
 
 class ListContentStandardsResponse2(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
     errors: list[error.Error]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
 class ListContentStandardsResponse1(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    pagination: pagination_response.PaginationResponse | None = None
     standards: Annotated[
         list[content_standards.ContentStandards],
         Field(description='Array of content standards configurations matching the filter criteria'),
     ]
+    pagination: pagination_response.PaginationResponse | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 ListContentStandardsResponse = ListContentStandardsResponse1 | ListContentStandardsResponse2
diff --git a/src/adcp/types/generated_poc/content_standards/update_content_standards_request.py b/src/adcp/types/generated_poc/content_standards/update_content_standards_request.py
index 23f70de19..c54a0b877 100644
--- a/src/adcp/types/generated_poc/content_standards/update_content_standards_request.py
+++ b/src/adcp/types/generated_poc/content_standards/update_content_standards_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/update_content_standards_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -12,36 +12,18 @@
 from ..core import context as context_1
 from ..core import ext as ext_1
 from ..enums import channels
+from ..governance import policy_entry
 from . import artifact
 
 
-class Fail(AdCPBaseModel):
-    language: Annotated[
-        str | None, Field(description='BCP 47 language tag for content at this URL')
-    ] = None
-    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
-    value: Annotated[
-        AnyUrl,
+class Scope(AdCPBaseModel):
+    countries_all: Annotated[
+        list[str] | None,
         Field(
-            description="Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            min_length=1,
         ),
-    ]
-
-
-class Pass(AdCPBaseModel):
-    language: Annotated[
-        str | None, Field(description='BCP 47 language tag for content at this URL')
     ] = None
-    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
-    value: Annotated[
-        AnyUrl,
-        Field(
-            description="Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
-        ),
-    ]
-
-
-class Scope(AdCPBaseModel):
     channels_any: Annotated[
         list[channels.MediaChannel] | None,
         Field(
@@ -49,39 +31,84 @@ class Scope(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    countries_all: Annotated[
+    languages_any: Annotated[
         list[str] | None,
         Field(
-            description='ISO 3166-1 alpha-2 country codes. Standards apply in ALL listed countries (AND logic).',
+            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
             min_length=1,
         ),
     ] = None
     description: Annotated[
         str | None, Field(description='Human-readable description of this scope')
     ] = None
-    languages_any: Annotated[
-        list[str] | None,
+
+
+class Pass(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
         Field(
-            description="BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
-            min_length=1,
+            description="Full URL to a specific page (e.g., 'https://espn.com/nba/story/_/id/12345/lakers-win')"
         ),
+    ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
     ] = None
 
 
-class CalibrationExemplars(AdCPBaseModel):
-    fail: Annotated[
-        list[Fail | artifact.Artifact] | None, Field(description='Content that fails the standards')
+class Fail(AdCPBaseModel):
+    type: Annotated[Literal['url'], Field(description='Indicates this is a URL reference')]
+    value: Annotated[
+        AnyUrl,
+        Field(
+            description="Full URL to a specific page (e.g., 'https://news.example.com/controversial-article')"
+        ),
+    ]
+    language: Annotated[
+        str | None, Field(description='BCP 47 language tag for content at this URL')
     ] = None
+
+
+class CalibrationExemplars(AdCPBaseModel):
     pass_: Annotated[
         list[Pass | artifact.Artifact] | None,
         Field(alias='pass', description='Content that passes the standards'),
     ] = None
+    fail: Annotated[
+        list[Fail | artifact.Artifact] | None, Field(description='Content that fails the standards')
+    ] = None
 
 
 class UpdateContentStandardsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    standards_id: Annotated[str, Field(description='ID of the standards configuration to update')]
+    scope: Annotated[
+        Scope | None,
+        Field(description='Updated scope for where this standards configuration applies'),
+    ] = None
+    registry_policy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Registry policy IDs to use as the evaluation basis. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria.'
+        ),
+    ] = None
+    policies: Annotated[
+        list[policy_entry.PolicyEntry] | None,
+        Field(
+            description='Updated bespoke policies for this content-standards configuration, using the same shape as registry entries. Replaces the existing policies array; use stable policy_ids to track policies across versions. Combines with registry_policy_ids. Bespoke policy_ids MUST be flat (no colons/slashes).',
+            min_length=1,
+        ),
+    ] = None
     calibration_exemplars: Annotated[
         CalibrationExemplars | None,
         Field(
@@ -91,27 +118,11 @@ class UpdateContentStandardsRequest(AdCPBaseModel):
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
-    policy: Annotated[
-        str | None,
-        Field(
-            description='Updated natural language policy describing acceptable and unacceptable content contexts.'
-        ),
-    ] = None
-    registry_policy_ids: Annotated[
-        list[str] | None,
-        Field(
-            description='Registry policy IDs to use as the evaluation basis. When provided, the agent resolves policies from the registry and uses their policy text and exemplars as the evaluation criteria.'
-        ),
-    ] = None
-    scope: Annotated[
-        Scope | None,
-        Field(description='Updated scope for where this standards configuration applies'),
-    ] = None
-    standards_id: Annotated[str, Field(description='ID of the standards configuration to update')]
+    ]
diff --git a/src/adcp/types/generated_poc/content_standards/update_content_standards_response.py b/src/adcp/types/generated_poc/content_standards/update_content_standards_response.py
index 9df750b19..5facce4e5 100644
--- a/src/adcp/types/generated_poc/content_standards/update_content_standards_response.py
+++ b/src/adcp/types/generated_poc/content_standards/update_content_standards_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/update_content_standards_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,18 +18,22 @@ class UpdateContentStandardsResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    standards_id: Annotated[str, Field(description='ID of the updated standards configuration')]
     success: Annotated[
         Literal[True], Field(description='Indicates the update was applied successfully')
     ]
+    standards_id: Annotated[str, Field(description='ID of the updated standards configuration')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class UpdateContentStandardsResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    success: Annotated[Literal[False], Field(description='Indicates the update failed')]
+    errors: Annotated[
+        list[error.Error], Field(description='Errors that occurred during the update', min_length=1)
+    ]
     conflicting_standards_id: Annotated[
         str | None,
         Field(
@@ -37,11 +41,7 @@ class UpdateContentStandardsResponse2(AdCPBaseModel):
         ),
     ] = None
     context: context_1.ContextObject | None = None
-    errors: Annotated[
-        list[error.Error], Field(description='Errors that occurred during the update', min_length=1)
-    ]
     ext: ext_1.ExtensionObject | None = None
-    success: Annotated[Literal[False], Field(description='Indicates the update failed')]
 
 
 UpdateContentStandardsResponse = UpdateContentStandardsResponse1 | UpdateContentStandardsResponse2
diff --git a/src/adcp/types/generated_poc/content_standards/validate_content_delivery_request.py b/src/adcp/types/generated_poc/content_standards/validate_content_delivery_request.py
index f47626940..e635fb4d7 100644
--- a/src/adcp/types/generated_poc/content_standards/validate_content_delivery_request.py
+++ b/src/adcp/types/generated_poc/content_standards/validate_content_delivery_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/validate_content_delivery_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,43 +20,51 @@ class BrandContext(AdCPBaseModel):
 
 
 class Record(AdCPBaseModel):
-    artifact: Annotated[artifact_1.Artifact, Field(description='Artifact where ad was delivered')]
-    brand_context: Annotated[
-        BrandContext | None,
-        Field(
-            description='Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.'
-        ),
-    ] = None
-    channel: Annotated[
-        str | None, Field(description='Channel type (e.g., display, video, audio, social)')
-    ] = None
-    country: Annotated[
-        str | None, Field(description='ISO 3166-1 alpha-2 country code where delivery occurred')
-    ] = None
+    record_id: Annotated[str, Field(description='Unique identifier for this delivery record')]
     media_buy_id: Annotated[
         str | None,
         Field(description='Media buy this record belongs to (when batching across multiple buys)'),
     ] = None
-    record_id: Annotated[str, Field(description='Unique identifier for this delivery record')]
     timestamp: Annotated[AwareDatetime | None, Field(description='When the delivery occurred')] = (
         None
     )
+    artifact: Annotated[artifact_1.Artifact, Field(description='Artifact where ad was delivered')]
+    country: Annotated[
+        str | None, Field(description='ISO 3166-1 alpha-2 country code where delivery occurred')
+    ] = None
+    channel: Annotated[
+        str | None, Field(description='Channel type (e.g., display, video, audio, social)')
+    ] = None
+    brand_context: Annotated[
+        BrandContext | None,
+        Field(
+            description='Brand information for policy evaluation. Schema TBD - placeholder for brand identifiers.'
+        ),
+    ] = None
 
 
 class ValidateContentDeliveryRequest(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    feature_ids: Annotated[
-        list[str] | None,
-        Field(description='Specific features to evaluate (defaults to all)', min_length=1),
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
     ] = None
-    include_passed: Annotated[
-        bool | None, Field(description='Include passed records in results')
-    ] = True
+    standards_id: Annotated[str, Field(description='Standards configuration to validate against')]
     records: Annotated[
         list[Record],
         Field(
             description='Delivery records to validate (max 10,000)', max_length=10000, min_length=1
         ),
     ]
-    standards_id: Annotated[str, Field(description='Standards configuration to validate against')]
+    feature_ids: Annotated[
+        list[str] | None,
+        Field(description='Specific features to evaluate (defaults to all)', min_length=1),
+    ] = None
+    include_passed: Annotated[
+        bool | None, Field(description='Include passed records in results')
+    ] = True
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/content_standards/validate_content_delivery_response.py b/src/adcp/types/generated_poc/content_standards/validate_content_delivery_response.py
index 130219e09..0c59130bd 100644
--- a/src/adcp/types/generated_poc/content_standards/validate_content_delivery_response.py
+++ b/src/adcp/types/generated_poc/content_standards/validate_content_delivery_response.py
@@ -1,11 +1,11 @@
 # generated by datamodel-codegen:
 #   filename:  content_standards/validate_content_delivery_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from enum import Enum
-from typing import Annotated, Any
+from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
 from pydantic import Field
@@ -15,6 +15,17 @@
 from ..core import ext as ext_1
 
 
+class Summary(AdCPBaseModel):
+    total_records: int
+    passed_records: int
+    failed_records: int
+
+
+class Verdict(Enum):
+    pass_ = 'pass'
+    fail = 'fail'
+
+
 class Status(Enum):
     passed = 'passed'
     failed = 'failed'
@@ -23,47 +34,56 @@ class Status(Enum):
 
 
 class Feature(AdCPBaseModel):
-    feature_id: str
-    message: str | None = None
-    rule_id: Annotated[
+    feature_id: Annotated[
+        str,
+        Field(
+            description="Which feature was evaluated. Data features come from the content-standards feature catalog (e.g., 'brand_safety', 'brand_suitability', 'image_dpi'). Record-level structural checks use reserved namespaces: 'record:malformed_artifact', 'delivery:authorization'. Reserved prefixes: 'record:', 'delivery:'."
+        ),
+    ]
+    status: Status
+    policy_id: Annotated[
         str | None,
         Field(
-            description='Which rule triggered this result (e.g., GARM category, Scope3 standard)'
+            description='Registry policy ID that triggered this result. Present when the result originates from a specific registry policy (e.g., GARM category, CSBS standard). Enables programmatic routing by looking up the policy in the registry.'
+        ),
+    ] = None
+    explanation: Annotated[
+        str | None,
+        Field(
+            description="Directional human-readable explanation (e.g., 'Below minimum resolution for display placement'). Avoid quantitative thresholds — the evaluator is the oracle."
+        ),
+    ] = None
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones.',
+            ge=0.0,
+            le=1.0,
         ),
     ] = None
-    status: Status
-    value: Any | None = None
-
-
-class Verdict(Enum):
-    pass_ = 'pass'
-    fail = 'fail'
 
 
 class Result(AdCPBaseModel):
-    features: Annotated[
-        list[Feature] | None, Field(description='Optional feature-level breakdown')
-    ] = None
     record_id: Annotated[str, Field(description='Which delivery record was evaluated')]
     verdict: Annotated[Verdict, Field(description='Overall pass/fail verdict for this record')]
-
-
-class Summary(AdCPBaseModel):
-    failed_records: int
-    passed_records: int
-    total_records: int
+    features: Annotated[
+        list[Feature] | None,
+        Field(
+            description="Per-feature breakdown. When present, SHOULD include all failed and warning features. MAY include passed features. Oracle pattern: exposes verdict + rule pointer, never the seller's threshold or the caller's submitted value (the seller authored the content standards)."
+        ),
+    ] = None
 
 
 class ValidateContentDeliveryResponse1(AdCPBaseModel):
+    summary: Annotated[Summary, Field(description='Summary counts across all records')]
+    results: Annotated[list[Result], Field(description='Per-record evaluation results')]
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    results: Annotated[list[Result], Field(description='Per-record evaluation results')]
-    summary: Annotated[Summary, Field(description='Summary counts across all records')]
 
 
 class ValidateContentDeliveryResponse2(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
     errors: list[error.Error]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/core/account.py b/src/adcp/types/generated_poc/core/account.py
index a9a3abbea..962b88bab 100644
--- a/src/adcp/types/generated_poc/core/account.py
+++ b/src/adcp/types/generated_poc/core/account.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/account.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,29 +10,54 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, RootModel
 
-from ..enums import account_status
+from ..enums import account_status, cloud_storage_protocol
 from . import brand_ref, business_entity
 from . import ext as ext_1
 
 
-class AccountScope(Enum):
-    operator = 'operator'
-    brand = 'brand'
-    operator_brand = 'operator_brand'
-    agent = 'agent'
-
-
 class Billing(Enum):
     operator = 'operator'
     agent = 'agent'
     advertiser = 'advertiser'
 
 
+class PaymentTerms(Enum):
+    net_15 = 'net_15'
+    net_30 = 'net_30'
+    net_45 = 'net_45'
+    net_60 = 'net_60'
+    net_90 = 'net_90'
+    prepay = 'prepay'
+
+
 class CreditLimit(AdCPBaseModel):
     amount: Annotated[float, Field(ge=0.0)]
     currency: Annotated[str, Field(pattern='^[A-Z]{3}$')]
 
 
+class Setup(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL where the human can complete the required action (credit application, legal agreement, add funds).'
+        ),
+    ] = None
+    message: Annotated[str, Field(description="Human-readable description of what's needed.")]
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='When this setup link expires.')
+    ] = None
+
+
+class AccountScope(Enum):
+    operator = 'operator'
+    brand = 'brand'
+    operator_brand = 'operator_brand'
+    agent = 'agent'
+
+
 class Category(RootModel[str]):
     root: Annotated[str, Field(max_length=64, pattern='^[a-z][a-z0-9_]*$')]
 
@@ -41,6 +66,7 @@ class GovernanceAgent(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL. Must use HTTPS.')]
     categories: Annotated[
         list[Category] | None,
         Field(
@@ -48,30 +74,76 @@ class GovernanceAgent(AdCPBaseModel):
             max_length=20,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description='Governance agent endpoint URL. Must use HTTPS.')]
 
 
-class PaymentTerms(Enum):
-    net_15 = 'net_15'
-    net_30 = 'net_30'
-    net_45 = 'net_45'
-    net_60 = 'net_60'
-    net_90 = 'net_90'
-    prepay = 'prepay'
+class Format(Enum):
+    jsonl = 'jsonl'
+    csv = 'csv'
+    parquet = 'parquet'
+    avro = 'avro'
+    orc = 'orc'
 
 
-class Setup(AdCPBaseModel):
+class Compression(Enum):
+    gzip = 'gzip'
+    none = 'none'
+
+
+class ReportingBucket(AdCPBaseModel):
     model_config = ConfigDict(
-        extra='allow',
+        extra='forbid',
     )
-    expires_at: Annotated[
-        AwareDatetime | None, Field(description='When this setup link expires.')
+    protocol: Annotated[
+        cloud_storage_protocol.CloudStorageProtocol, Field(description='Cloud storage protocol')
+    ]
+    bucket: Annotated[
+        str,
+        Field(
+            description='Bucket or container name',
+            max_length=63,
+            min_length=3,
+            pattern='^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$',
+        ),
+    ]
+    prefix: Annotated[
+        str | None,
+        Field(
+            description='Path prefix within the bucket. Seller appends date-based partitioning beneath this prefix.',
+            examples=['accounts/pinnacle/adcp', 'reporting/2024'],
+            max_length=512,
+            pattern='^[a-zA-Z0-9/_.-]+$',
+        ),
     ] = None
-    message: Annotated[str, Field(description="Human-readable description of what's needed.")]
-    url: Annotated[
+    region: Annotated[
+        str | None,
+        Field(
+            description='Cloud region for the bucket',
+            examples=['us-east-1', 'europe-west1'],
+            max_length=64,
+            pattern='^[a-z0-9-]+$',
+        ),
+    ] = None
+    format: Annotated[
+        Format | None,
+        Field(
+            description='File format for delivered files. Parquet, Avro, and ORC use internal compression (the top-level compression field is ignored for these formats).'
+        ),
+    ] = Format.jsonl
+    compression: Annotated[
+        Compression | None, Field(description='Compression applied to delivered files')
+    ] = Compression.gzip
+    file_retention_days: Annotated[
+        int,
+        Field(
+            description='How long reporting files are retained in the bucket before deletion. Buyers must read files within this window. Minimum recommended: 14 days.',
+            examples=[14, 30, 90],
+            ge=1,
+        ),
+    ]
+    setup_instructions: Annotated[
         AnyUrl | None,
         Field(
-            description='URL where the human can complete the required action (credit application, legal agreement, add funds).'
+            description='URL to documentation for configuring buyer read access to this bucket (IAM role, service account, etc.). Operator-facing documentation — buyer agents MUST NOT auto-fetch this URL; surface it to a human operator. If an implementation fetches it (for preview), apply webhook URL SSRF validation and do not pass the fetched content into an LLM context without indirect-prompt-injection guarding. See docs/media-buy/media-buys/optimization-reporting#security-considerations-for-offline-delivery.'
         ),
     ] = None
 
@@ -81,14 +153,34 @@ class Account(AdCPBaseModel):
         extra='allow',
     )
     account_id: Annotated[str, Field(description='Unique identifier for this account')]
-    account_scope: Annotated[
-        AccountScope | None,
+    name: Annotated[
+        str, Field(description="Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')")
+    ]
+    advertiser: Annotated[
+        str | None, Field(description='The advertiser whose rates apply to this account')
+    ] = None
+    billing_proxy: Annotated[
+        str | None,
         Field(
-            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
+            description='Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)'
         ),
     ] = None
-    advertiser: Annotated[
-        str | None, Field(description='The advertiser whose rates apply to this account')
+    status: Annotated[
+        account_status.AccountStatus,
+        Field(
+            description='Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.'
+        ),
+    ]
+    brand: Annotated[
+        brand_ref.BrandReference | None,
+        Field(description='Brand reference identifying the advertiser'),
+    ] = None
+    operator: Annotated[
+        str | None,
+        Field(
+            description="Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
     ] = None
     billing: Annotated[
         Billing | None,
@@ -102,45 +194,42 @@ class Account(AdCPBaseModel):
             description='Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only).'
         ),
     ] = None
-    billing_proxy: Annotated[
-        str | None,
+    rate_card: Annotated[
+        str | None, Field(description='Identifier for the rate card applied to this account')
+    ] = None
+    payment_terms: Annotated[
+        PaymentTerms | None,
         Field(
-            description='Optional intermediary who receives invoices on behalf of the advertiser (e.g., agency)'
+            description='Payment terms agreed for this account. Binding for all invoices when the account is active.'
         ),
     ] = None
-    brand: Annotated[
-        brand_ref.BrandReference | None,
-        Field(description='Brand reference identifying the advertiser'),
-    ] = None
     credit_limit: Annotated[
         CreditLimit | None, Field(description='Maximum outstanding balance allowed')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    governance_agents: Annotated[
-        list[GovernanceAgent] | None,
+    setup: Annotated[
+        Setup | None,
         Field(
-            description='Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses — use sync_governance to set or update credentials.',
-            max_length=10,
+            description="Present when status is 'pending_approval'. Contains next steps for completing account activation."
         ),
     ] = None
-    name: Annotated[
-        str, Field(description="Human-readable account name (e.g., 'Acme', 'Acme c/o Pinnacle')")
-    ]
-    operator: Annotated[
-        str | None,
+    account_scope: Annotated[
+        AccountScope | None,
         Field(
-            description="Domain of the entity operating this account. When the brand operates directly, this is the brand's domain.",
-            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+            description="How the seller scoped this account. operator: shared across all brands for this operator. brand: shared across all operators for this brand. operator_brand: dedicated to a specific operator+brand combination. agent: the agent's default account with no brand or operator association."
         ),
     ] = None
-    payment_terms: Annotated[
-        PaymentTerms | None,
+    governance_agents: Annotated[
+        list[GovernanceAgent] | None,
         Field(
-            description='Payment terms agreed for this account. Binding for all invoices when the account is active.'
+            description='Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses — use sync_governance to set or update credentials.',
+            max_length=10,
         ),
     ] = None
-    rate_card: Annotated[
-        str | None, Field(description='Identifier for the rate card applied to this account')
+    reporting_bucket: Annotated[
+        ReportingBucket | None,
+        Field(
+            description="Cloud storage bucket where the seller delivers offline reporting files for this account. Seller provisions a dedicated bucket or a per-account prefix within a shared bucket, and grants the buyer read access out-of-band. Access MUST be scoped at the IAM layer so each account can only read its own prefix — bucket-wide grants are non-compliant even with per-account prefixes. Seller MUST revoke access when the account's status transitions to inactive, suspended, or closed. See security considerations for offline delivery in docs/media-buy/media-buys/optimization-reporting. Only present when the seller supports offline delivery (reporting_delivery_methods includes 'offline' in capabilities)."
+        ),
     ] = None
     sandbox: Annotated[
         bool | None,
@@ -148,15 +237,4 @@ class Account(AdCPBaseModel):
             description='When true, this is a sandbox account — no real platform calls, no real spend. For explicit accounts (require_operator_auth: true), sandbox accounts are pre-existing test accounts on the platform discovered via list_accounts. For implicit accounts, sandbox is part of the natural key: the same brand/operator pair can have both a production and sandbox account.'
         ),
     ] = None
-    setup: Annotated[
-        Setup | None,
-        Field(
-            description="Present when status is 'pending_approval'. Contains next steps for completing account activation."
-        ),
-    ] = None
-    status: Annotated[
-        account_status.AccountStatus,
-        Field(
-            description='Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state.'
-        ),
-    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/account_ref.py b/src/adcp/types/generated_poc/core/account_ref.py
index 877919fc3..a1eeb1ba3 100644
--- a/src/adcp/types/generated_poc/core/account_ref.py
+++ b/src/adcp/types/generated_poc/core/account_ref.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/account_ref.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -55,7 +55,7 @@ class AccountReference(RootModel[AccountReference1 | AccountReference2]):
                 {'account_id': 'acc_acme_001'},
                 {'brand': {'domain': 'acme-corp.com'}, 'operator': 'acme-corp.com'},
                 {
-                    'brand': {'brand_id': 'spark', 'domain': 'nova-brands.com'},
+                    'brand': {'domain': 'nova-brands.com', 'brand_id': 'spark'},
                     'operator': 'pinnacle-media.com',
                 },
                 {
diff --git a/src/adcp/types/generated_poc/core/activation_key.py b/src/adcp/types/generated_poc/core/activation_key.py
index c7e2fddca..c57763280 100644
--- a/src/adcp/types/generated_poc/core/activation_key.py
+++ b/src/adcp/types/generated_poc/core/activation_key.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/activation_key.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,29 +10,29 @@
 from pydantic import ConfigDict, Field, RootModel
 
 
-class ActivationKey1(AdCPBaseModel):
+class ActivationKey4(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    type: Annotated[Literal['segment_id'], Field(description='Segment ID based targeting')]
     segment_id: Annotated[
         str,
         Field(description='The platform-specific segment identifier to use in campaign targeting'),
     ]
-    type: Annotated[Literal['segment_id'], Field(description='Segment ID based targeting')]
 
 
-class ActivationKey2(AdCPBaseModel):
+class ActivationKey5(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    key: Annotated[str, Field(description='The targeting parameter key')]
     type: Annotated[Literal['key_value'], Field(description='Key-value pair based targeting')]
+    key: Annotated[str, Field(description='The targeting parameter key')]
     value: Annotated[str, Field(description='The targeting parameter value')]
 
 
-class ActivationKey(RootModel[ActivationKey1 | ActivationKey2]):
+class ActivationKey(RootModel[ActivationKey4 | ActivationKey5]):
     root: Annotated[
-        ActivationKey1 | ActivationKey2,
+        ActivationKey4 | ActivationKey5,
         Field(
             description="Universal identifier for using a signal on a destination platform. Can be either a segment ID or a key-value pair depending on the platform's targeting mechanism.",
             title='Activation Key',
diff --git a/src/adcp/types/generated_poc/core/agent_encryption_key.py b/src/adcp/types/generated_poc/core/agent_encryption_key.py
new file mode 100644
index 000000000..4420cb504
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/agent_encryption_key.py
@@ -0,0 +1,31 @@
+# generated by datamodel-codegen:
+#   filename:  core/agent_encryption_key.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class AgentEncryptionKey(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    kid: Annotated[
+        str,
+        Field(
+            description='Key identifier. Opaque — MUST NOT encode geographic or deployment information.',
+            max_length=8,
+        ),
+    ]
+    kty: Annotated[Literal['OKP'], Field(description='JWK key type. Must be OKP for X25519.')]
+    crv: Annotated[
+        Literal['X25519'], Field(description='Curve name. Must be X25519 for TMPX encryption.')
+    ]
+    use: Annotated[
+        Literal['enc'], Field(description='JWK use value. Must be enc for encryption keys.')
+    ]
+    x: Annotated[str, Field(description='Base64url-encoded X25519 public key (32 bytes).')]
diff --git a/src/adcp/types/generated_poc/core/agent_signing_key.py b/src/adcp/types/generated_poc/core/agent_signing_key.py
index e00dd3bc6..1bf967e0e 100644
--- a/src/adcp/types/generated_poc/core/agent_signing_key.py
+++ b/src/adcp/types/generated_poc/core/agent_signing_key.py
@@ -1,34 +1,32 @@
 # generated by datamodel-codegen:
 #   filename:  core/agent_signing_key.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field
+from pydantic import AwareDatetime, ConfigDict, Field
 
 
 class AgentSigningKey(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    kid: Annotated[str, Field(description='Key identifier for selecting the correct signing key.')]
+    kty: Annotated[str, Field(description="JWK key type, such as 'OKP', 'EC', or 'RSA'.")]
     alg: Annotated[
         str | None,
         Field(description="Expected signing algorithm for this key, such as 'EdDSA' or 'RS256'."),
     ] = None
+    use: Annotated[
+        str | None, Field(description="Optional JWK use value. Typically 'sig' for signing keys.")
+    ] = None
     crv: Annotated[
         str | None,
         Field(description="Curve name for OKP or EC keys, such as 'Ed25519' or 'P-256'."),
     ] = None
-    e: Annotated[str | None, Field(description='Base64url-encoded RSA public exponent.')] = None
-    kid: Annotated[str, Field(description='Key identifier for selecting the correct signing key.')]
-    kty: Annotated[str, Field(description="JWK key type, such as 'OKP', 'EC', or 'RSA'.")]
-    n: Annotated[str | None, Field(description='Base64url-encoded RSA modulus.')] = None
-    use: Annotated[
-        str | None, Field(description="Optional JWK use value. Typically 'sig' for signing keys.")
-    ] = None
     x: Annotated[
         str | None,
         Field(
@@ -38,3 +36,11 @@ class AgentSigningKey(AdCPBaseModel):
     y: Annotated[
         str | None, Field(description='Base64url-encoded public key y coordinate for EC keys.')
     ] = None
+    n: Annotated[str | None, Field(description='Base64url-encoded RSA modulus.')] = None
+    e: Annotated[str | None, Field(description='Base64url-encoded RSA public exponent.')] = None
+    revoked_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Optional revocation timestamp. When present, verifiers MUST reject any signature produced with this key whose signing epoch (or equivalent time reference) is at or after this timestamp. The key may continue to appear in the trust anchor during a grace period so caches that have not yet refreshed still find the key and can evaluate the revocation marker. Keys past their revocation can be removed once the cache TTL (recommended: 5 minutes) has elapsed across all verifiers.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/app_item.py b/src/adcp/types/generated_poc/core/app_item.py
new file mode 100644
index 000000000..366a08139
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/app_item.py
@@ -0,0 +1,136 @@
+# generated by datamodel-codegen:
+#   filename:  core/app_item.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+from . import ext as ext_1
+from . import offering_asset_group
+from . import price as price_1
+
+
+class Platform(Enum):
+    ios = 'ios'
+    android = 'android'
+
+
+class AppItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    app_id: Annotated[
+        str,
+        Field(
+            description='Buyer-assigned unique identifier for this app item. Used for catalog deduplication and content_ids matching on install and launch events.'
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description="App display name as shown in the store (e.g., 'Puzzle Quest: Match 3', 'Acme Banking')."
+        ),
+    ]
+    platform: Annotated[
+        Platform,
+        Field(
+            description='Target platform. iOS and Android are separate items because they have distinct store identifiers and attribution mechanisms.'
+        ),
+    ]
+    bundle_id: Annotated[
+        str | None,
+        Field(
+            description="Reverse-domain bundle identifier (e.g., 'com.acmegames.puzzlequest'). The universal store identifier: required for Android (Google Play), also used for iOS MMP attribution, SKAN matching, and app-ads.txt verification. Distinct from app_id, which is a buyer-assigned catalog key."
+        ),
+    ] = None
+    apple_id: Annotated[
+        str | None,
+        Field(
+            description="Numeric Apple App Store ID (e.g., '389801252'). Required for Apple Search Ads and iOS platforms that use the numeric ID rather than bundle_id.",
+            pattern='^[0-9]+$',
+        ),
+    ] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description='App description. Platforms typically pull this from the store listing automatically; supply here to override or for platforms that require it in the request.'
+        ),
+    ] = None
+    category: Annotated[
+        str | None,
+        Field(
+            description="Primary store category (e.g., 'games', 'productivity', 'finance', 'health_fitness', 'social_networking')."
+        ),
+    ] = None
+    genre: Annotated[
+        str | None,
+        Field(
+            description="Sub-genre within the category. Particularly relevant for games (e.g., 'puzzle', 'strategy', 'rpg', 'casual', 'simulation', 'action')."
+        ),
+    ] = None
+    icon_url: Annotated[
+        AnyUrl | None, Field(description='App icon image URL. Typically 1024×1024 px.')
+    ] = None
+    screenshots: Annotated[
+        list[AnyUrl] | None,
+        Field(
+            description='App store screenshot URLs. Used by platforms for creative generation when native store assets are not available.'
+        ),
+    ] = None
+    preview_video_url: Annotated[
+        AnyUrl | None,
+        Field(description='App preview or gameplay video URL for use in video ad creatives.'),
+    ] = None
+    store_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="Direct link to the app's store listing (Apple App Store or Google Play)."
+        ),
+    ] = None
+    deep_link_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="Deep link URI for re-engagement campaigns targeting existing users. Use Universal Links (iOS) or App Links (Android) where available (e.g., 'https://acmegames.com/app/level/5'). Falls back to URI scheme (e.g., 'acmegames://level/5') when universal links are not configured."
+        ),
+    ] = None
+    price: Annotated[
+        price_1.Price | None,
+        Field(description='App download price. Set amount to 0 for free apps.'),
+    ] = None
+    rating: Annotated[
+        float | None,
+        Field(
+            description='Average store rating (0–5). Use 0 to indicate no ratings yet.',
+            ge=0.0,
+            le=5.0,
+        ),
+    ] = None
+    rating_count: Annotated[
+        int | None, Field(description='Total number of store ratings.', ge=0)
+    ] = None
+    content_rating: Annotated[
+        str | None,
+        Field(
+            description="Age or content rating (e.g., '4+', '12+', 'Everyone', 'Teen', 'PEGI 12'). Format depends on store and region."
+        ),
+    ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description="Tags for filtering and targeting (e.g., 'multiplayer', 'offline', 'no-ads', 'subscription').",
+            min_length=1,
+        ),
+    ] = None
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this app. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (promotional hero), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1 for display), 'video' (gameplay or demo video). Supplements icon_url and screenshots for platform-specific format requirements.",
+            min_length=1,
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/assets/audio_asset.py b/src/adcp/types/generated_poc/core/assets/audio_asset.py
index d6810b653..ef7caf29c 100644
--- a/src/adcp/types/generated_poc/core/assets/audio_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/audio_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/audio_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -13,12 +13,6 @@
 from .. import provenance as provenance_1
 
 
-class BitDepth(IntEnum):
-    integer_16 = 16
-    integer_24 = 24
-    integer_32 = 32
-
-
 class Channels(Enum):
     mono = 'mono'
     stereo = 'stereo'
@@ -26,41 +20,47 @@ class Channels(Enum):
     field_7_1 = '7.1'
 
 
+class BitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
+
+
 class AudioAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    bit_depth: Annotated[BitDepth | None, Field(description='Bit depth')] = None
-    bitrate_kbps: Annotated[
-        int | None, Field(description='Bitrate in kilobits per second', ge=1)
+    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
+    duration_ms: Annotated[
+        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    ] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
+    container_format: Annotated[
+        str | None,
+        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
     ] = None
-    channels: Annotated[Channels | None, Field(description='Channel configuration')] = None
     codec: Annotated[
         str | None,
         Field(
             description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, vorbis, opus, flac, ac3, eac3, etc.)'
         ),
     ] = None
-    container_format: Annotated[
-        str | None,
-        Field(description='Audio container/file format (mp3, m4a, aac, wav, ogg, flac, etc.)'),
+    sampling_rate_hz: Annotated[
+        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
     ] = None
-    duration_ms: Annotated[
-        int | None, Field(description='Audio duration in milliseconds', ge=0)
+    channels: Annotated[Channels | None, Field(description='Channel configuration')] = None
+    bit_depth: Annotated[BitDepth | None, Field(description='Bit depth')] = None
+    bitrate_kbps: Annotated[
+        int | None, Field(description='Bitrate in kilobits per second', ge=1)
     ] = None
-    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
     loudness_lufs: Annotated[float | None, Field(description='Integrated loudness in LUFS')] = None
+    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
+    transcript_url: Annotated[
+        AnyUrl | None, Field(description='URL to text transcript of the audio content')
+    ] = None
     provenance: Annotated[
         provenance_1.Provenance | None,
         Field(
             description='Provenance metadata for this asset, overrides manifest-level provenance'
         ),
     ] = None
-    sampling_rate_hz: Annotated[
-        int | None, Field(description='Sampling rate in Hz (e.g., 44100, 48000, 96000)')
-    ] = None
-    transcript_url: Annotated[
-        AnyUrl | None, Field(description='URL to text transcript of the audio content')
-    ] = None
-    true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = None
-    url: Annotated[AnyUrl, Field(description='URL to the audio asset')]
diff --git a/src/adcp/types/generated_poc/core/assets/brief_asset.py b/src/adcp/types/generated_poc/core/assets/brief_asset.py
index 008a6ddc7..100139769 100644
--- a/src/adcp/types/generated_poc/core/assets/brief_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/brief_asset.py
@@ -1,9 +1,11 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/brief_asset.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from ..creative_brief import CreativeBrief
 
-BriefAsset = CreativeBrief
+
+class BriefAsset(CreativeBrief):
+    pass
diff --git a/src/adcp/types/generated_poc/core/assets/catalog_asset.py b/src/adcp/types/generated_poc/core/assets/catalog_asset.py
index b73409705..274aee8fb 100644
--- a/src/adcp/types/generated_poc/core/assets/catalog_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/catalog_asset.py
@@ -1,9 +1,11 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/catalog_asset.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from ..catalog import Catalog
 
-CatalogAsset = Catalog
+
+class CatalogAsset(Catalog):
+    pass
diff --git a/src/adcp/types/generated_poc/core/assets/daast_asset.py b/src/adcp/types/generated_poc/core/assets/daast_asset.py
index d03861241..33b76c5e3 100644
--- a/src/adcp/types/generated_poc/core/assets/daast_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/daast_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/daast_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,66 +18,66 @@ class DaastAsset1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    companion_ads: Annotated[
-        bool | None, Field(description='Whether companion display ads are included')
-    ] = None
-    daast_version: Annotated[
-        daast_version_1.DaastVersion | None, Field(description='DAAST specification version')
-    ] = None
     delivery_type: Annotated[
         Literal['url'],
         Field(description='Discriminator indicating DAAST is delivered via URL endpoint'),
     ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    daast_version: Annotated[
+        daast_version_1.DaastVersion | None, Field(description='DAAST specification version')
+    ] = None
     duration_ms: Annotated[
         int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
     ] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(
-            description='Provenance metadata for this asset, overrides manifest-level provenance'
-        ),
-    ] = None
     tracking_events: Annotated[
         list[daast_tracking_event.DaastTrackingEvent] | None,
         Field(description='Tracking events supported by this DAAST tag'),
     ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
     transcript_url: Annotated[
         AnyUrl | None, Field(description='URL to text transcript of the audio content')
     ] = None
-    url: Annotated[AnyUrl, Field(description='URL endpoint that returns DAAST XML')]
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance'
+        ),
+    ] = None
 
 
 class DaastAsset2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    companion_ads: Annotated[
-        bool | None, Field(description='Whether companion display ads are included')
-    ] = None
-    content: Annotated[str, Field(description='Inline DAAST XML content')]
-    daast_version: Annotated[
-        daast_version_1.DaastVersion | None, Field(description='DAAST specification version')
-    ] = None
     delivery_type: Annotated[
         Literal['inline'],
         Field(description='Discriminator indicating DAAST is delivered as inline XML content'),
     ]
+    content: Annotated[str, Field(description='Inline DAAST XML content')]
+    daast_version: Annotated[
+        daast_version_1.DaastVersion | None, Field(description='DAAST specification version')
+    ] = None
     duration_ms: Annotated[
         int | None, Field(description='Expected audio duration in milliseconds (if known)', ge=0)
     ] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(
-            description='Provenance metadata for this asset, overrides manifest-level provenance'
-        ),
-    ] = None
     tracking_events: Annotated[
         list[daast_tracking_event.DaastTrackingEvent] | None,
         Field(description='Tracking events supported by this DAAST tag'),
     ] = None
+    companion_ads: Annotated[
+        bool | None, Field(description='Whether companion display ads are included')
+    ] = None
     transcript_url: Annotated[
         AnyUrl | None, Field(description='URL to text transcript of the audio content')
     ] = None
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance'
+        ),
+    ] = None
 
 
 class DaastAsset(RootModel[DaastAsset1 | DaastAsset2]):
diff --git a/src/adcp/types/generated_poc/core/assets/html_asset.py b/src/adcp/types/generated_poc/core/assets/html_asset.py
index 154a2fdcb..87bf29053 100644
--- a/src/adcp/types/generated_poc/core/assets/html_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/html_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/html_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -34,15 +34,15 @@ class HtmlAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    content: Annotated[str, Field(description='HTML content')]
+    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
     accessibility: Annotated[
         Accessibility | None,
         Field(description='Self-declared accessibility properties for this opaque creative'),
     ] = None
-    content: Annotated[str, Field(description='HTML content')]
     provenance: Annotated[
         provenance_1.Provenance | None,
         Field(
             description='Provenance metadata for this asset, overrides manifest-level provenance'
         ),
     ] = None
-    version: Annotated[str | None, Field(description="HTML version (e.g., 'HTML5')")] = None
diff --git a/src/adcp/types/generated_poc/core/assets/image_asset.py b/src/adcp/types/generated_poc/core/assets/image_asset.py
index 097c1d80e..904976a2e 100644
--- a/src/adcp/types/generated_poc/core/assets/image_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/image_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/image_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,16 +16,16 @@ class ImageAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
+    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
     format: Annotated[
         str | None, Field(description='Image file format (jpg, png, gif, webp, etc.)')
     ] = None
-    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    alt_text: Annotated[str | None, Field(description='Alternative text for accessibility')] = None
     provenance: Annotated[
         provenance_1.Provenance | None,
         Field(
             description='Provenance metadata for this asset, overrides manifest-level provenance'
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description='URL to the image asset')]
-    width: Annotated[int, Field(description='Width in pixels', ge=1)]
diff --git a/src/adcp/types/generated_poc/core/assets/javascript_asset.py b/src/adcp/types/generated_poc/core/assets/javascript_asset.py
index 4f465bbe1..dfe57c121 100644
--- a/src/adcp/types/generated_poc/core/assets/javascript_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/javascript_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/javascript_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -35,15 +35,15 @@ class JavascriptAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    accessibility: Annotated[
-        Accessibility | None,
-        Field(description='Self-declared accessibility properties for this opaque creative'),
-    ] = None
     content: Annotated[str, Field(description='JavaScript content')]
     module_type: Annotated[
         javascript_module_type.JavascriptModuleType | None,
         Field(description='JavaScript module type'),
     ] = None
+    accessibility: Annotated[
+        Accessibility | None,
+        Field(description='Self-declared accessibility properties for this opaque creative'),
+    ] = None
     provenance: Annotated[
         provenance_1.Provenance | None,
         Field(
diff --git a/src/adcp/types/generated_poc/core/assets/markdown_asset.py b/src/adcp/types/generated_poc/core/assets/markdown_asset.py
index f619005b3..4f45484b5 100644
--- a/src/adcp/types/generated_poc/core/assets/markdown_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/markdown_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/markdown_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,12 +16,6 @@ class MarkdownAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    allow_raw_html: Annotated[
-        bool | None,
-        Field(
-            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
-        ),
-    ] = False
     content: Annotated[
         str,
         Field(
@@ -37,3 +31,9 @@ class MarkdownAsset(AdCPBaseModel):
             description='Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough.'
         ),
     ] = markdown_flavor_1.MarkdownFlavor.commonmark
+    allow_raw_html: Annotated[
+        bool | None,
+        Field(
+            description='Whether raw HTML blocks are allowed in the markdown. False recommended for security.'
+        ),
+    ] = False
diff --git a/src/adcp/types/generated_poc/core/assets/url_asset.py b/src/adcp/types/generated_poc/core/assets/url_asset.py
index e81ae3077..d65a74af3 100644
--- a/src/adcp/types/generated_poc/core/assets/url_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/url_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/url_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,6 +17,13 @@ class UrlAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    url: Annotated[AnyUrl, Field(description='URL reference')]
+    url_type: Annotated[
+        url_asset_type.UrlAssetType | None,
+        Field(
+            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)"
+        ),
+    ] = None
     description: Annotated[
         str | None, Field(description='Description of what this URL points to')
     ] = None
@@ -26,10 +33,3 @@ class UrlAsset(AdCPBaseModel):
             description='Provenance metadata for this asset, overrides manifest-level provenance'
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description='URL reference')]
-    url_type: Annotated[
-        url_asset_type.UrlAssetType | None,
-        Field(
-            description="Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)"
-        ),
-    ] = None
diff --git a/src/adcp/types/generated_poc/core/assets/vast_asset.py b/src/adcp/types/generated_poc/core/assets/vast_asset.py
index 18983dfc9..115d1b4f5 100644
--- a/src/adcp/types/generated_poc/core/assets/vast_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/vast_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/vast_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,37 +18,37 @@ class VastAsset1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    audio_description_url: Annotated[
-        AnyUrl | None,
-        Field(description='URL to audio description track for visually impaired users'),
-    ] = None
-    captions_url: Annotated[
-        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
-    ] = None
     delivery_type: Annotated[
         Literal['url'],
         Field(description='Discriminator indicating VAST is delivered via URL endpoint'),
     ]
+    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
+    vast_version: Annotated[
+        vast_version_1.VastVersion | None, Field(description='VAST specification version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
     duration_ms: Annotated[
         int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
     ] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(
-            description='Provenance metadata for this asset, overrides manifest-level provenance'
-        ),
-    ] = None
     tracking_events: Annotated[
         list[vast_tracking_event.VastTrackingEvent] | None,
         Field(description='Tracking events supported by this VAST tag'),
     ] = None
-    url: Annotated[AnyUrl, Field(description='URL endpoint that returns VAST XML')]
-    vast_version: Annotated[
-        vast_version_1.VastVersion | None, Field(description='VAST specification version')
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
     ] = None
-    vpaid_enabled: Annotated[
-        bool | None,
-        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance'
+        ),
     ] = None
 
 
@@ -56,37 +56,37 @@ class VastAsset2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    audio_description_url: Annotated[
-        AnyUrl | None,
-        Field(description='URL to audio description track for visually impaired users'),
-    ] = None
-    captions_url: Annotated[
-        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
-    ] = None
-    content: Annotated[str, Field(description='Inline VAST XML content')]
     delivery_type: Annotated[
         Literal['inline'],
         Field(description='Discriminator indicating VAST is delivered as inline XML content'),
     ]
+    content: Annotated[str, Field(description='Inline VAST XML content')]
+    vast_version: Annotated[
+        vast_version_1.VastVersion | None, Field(description='VAST specification version')
+    ] = None
+    vpaid_enabled: Annotated[
+        bool | None,
+        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    ] = None
     duration_ms: Annotated[
         int | None, Field(description='Expected video duration in milliseconds (if known)', ge=0)
     ] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(
-            description='Provenance metadata for this asset, overrides manifest-level provenance'
-        ),
-    ] = None
     tracking_events: Annotated[
         list[vast_tracking_event.VastTrackingEvent] | None,
         Field(description='Tracking events supported by this VAST tag'),
     ] = None
-    vast_version: Annotated[
-        vast_version_1.VastVersion | None, Field(description='VAST specification version')
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
     ] = None
-    vpaid_enabled: Annotated[
-        bool | None,
-        Field(description='Whether VPAID (Video Player-Ad Interface Definition) is supported'),
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
+    ] = None
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance'
+        ),
     ] = None
 
 
diff --git a/src/adcp/types/generated_poc/core/assets/video_asset.py b/src/adcp/types/generated_poc/core/assets/video_asset.py
index 0bedd554e..12fd53790 100644
--- a/src/adcp/types/generated_poc/core/assets/video_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/video_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/video_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -13,23 +13,14 @@
 from .. import provenance as provenance_1
 
 
-class AudioBitDepth(IntEnum):
-    integer_16 = 16
-    integer_24 = 24
-    integer_32 = 32
-
-
-class AudioChannels(Enum):
-    mono = 'mono'
-    stereo = 'stereo'
-    field_5_1 = '5.1'
-    field_7_1 = '7.1'
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
 
 
-class ChromaSubsampling(Enum):
-    field_4_2_0 = '4:2:0'
-    field_4_2_2 = '4:2:2'
-    field_4_4_4 = '4:4:4'
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
 
 
 class ColorSpace(Enum):
@@ -40,16 +31,6 @@ class ColorSpace(Enum):
     dci_p3 = 'dci_p3'
 
 
-class FrameRateType(Enum):
-    constant = 'constant'
-    variable = 'variable'
-
-
-class GopType(Enum):
-    closed = 'closed'
-    open = 'open'
-
-
 class HdrFormat(Enum):
     sdr = 'sdr'
     hdr10 = 'hdr10'
@@ -58,64 +39,61 @@ class HdrFormat(Enum):
     dolby_vision = 'dolby_vision'
 
 
+class ChromaSubsampling(Enum):
+    field_4_2_0 = '4:2:0'
+    field_4_2_2 = '4:2:2'
+    field_4_4_4 = '4:4:4'
+
+
+class VideoBitDepth(IntEnum):
+    integer_8 = 8
+    integer_10 = 10
+    integer_12 = 12
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
 class MoovAtomPosition(Enum):
     start = 'start'
     end = 'end'
 
 
-class ScanType(Enum):
-    progressive = 'progressive'
-    interlaced = 'interlaced'
+class AudioChannels(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
 
 
-class VideoBitDepth(IntEnum):
-    integer_8 = 8
-    integer_10 = 10
-    integer_12 = 12
+class AudioBitDepth(IntEnum):
+    integer_16 = 16
+    integer_24 = 24
+    integer_32 = 32
 
 
 class VideoAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
-    audio_bitrate_kbps: Annotated[
-        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
-    ] = None
-    audio_channels: Annotated[
-        AudioChannels | None, Field(description='Audio channel configuration')
-    ] = None
-    audio_codec: Annotated[
-        str | None,
-        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
-    ] = None
-    audio_description_url: Annotated[
-        AnyUrl | None,
-        Field(description='URL to audio description track for visually impaired users'),
-    ] = None
-    audio_loudness_lufs: Annotated[
-        float | None, Field(description='Integrated loudness in LUFS')
-    ] = None
-    audio_sampling_rate_hz: Annotated[
-        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
-    ] = None
-    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
-        None
-    )
-    captions_url: Annotated[
-        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
-    ] = None
-    chroma_subsampling: Annotated[
-        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
+    width: Annotated[int, Field(description='Width in pixels', ge=1)]
+    height: Annotated[int, Field(description='Height in pixels', ge=1)]
+    duration_ms: Annotated[
+        int | None, Field(description='Video duration in milliseconds', ge=1)
     ] = None
-    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
     container_format: Annotated[
         str | None, Field(description='Video container format (mp4, webm, mov, etc.)')
     ] = None
-    duration_ms: Annotated[
-        int | None, Field(description='Video duration in milliseconds', ge=1)
+    video_codec: Annotated[
+        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    ] = None
+    video_bitrate_kbps: Annotated[
+        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
     ] = None
-    file_size_bytes: Annotated[int | None, Field(description='File size in bytes', ge=1)] = None
     frame_rate: Annotated[
         str | None,
         Field(
@@ -126,37 +104,59 @@ class VideoAsset(AdCPBaseModel):
         FrameRateType | None,
         Field(description='Whether the video uses constant (CFR) or variable (VFR) frame rate'),
     ] = None
+    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
+    color_space: Annotated[ColorSpace | None, Field(description='Color space of the video')] = None
+    hdr_format: Annotated[
+        HdrFormat | None,
+        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    ] = None
+    chroma_subsampling: Annotated[
+        ChromaSubsampling | None, Field(description='Chroma subsampling format')
+    ] = None
+    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
     gop_interval_seconds: Annotated[
         float | None, Field(description='GOP/keyframe interval in seconds')
     ] = None
     gop_type: Annotated[GopType | None, Field(description='GOP structure type')] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    ] = None
     has_audio: Annotated[
         bool | None, Field(description='Whether the video contains an audio track')
     ] = None
-    hdr_format: Annotated[
-        HdrFormat | None,
-        Field(description="HDR format if applicable, or 'sdr' for standard dynamic range"),
+    audio_codec: Annotated[
+        str | None,
+        Field(description='Audio codec used (aac, aac_lc, he_aac, pcm, mp3, ac3, eac3, etc.)'),
     ] = None
-    height: Annotated[int, Field(description='Height in pixels', ge=1)]
-    moov_atom_position: Annotated[
-        MoovAtomPosition | None, Field(description='Position of moov atom in MP4 container')
+    audio_sampling_rate_hz: Annotated[
+        int | None, Field(description='Audio sampling rate in Hz (e.g., 44100, 48000)')
     ] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(
-            description='Provenance metadata for this asset, overrides manifest-level provenance'
-        ),
+    audio_channels: Annotated[
+        AudioChannels | None, Field(description='Audio channel configuration')
+    ] = None
+    audio_bit_depth: Annotated[AudioBitDepth | None, Field(description='Audio bit depth')] = None
+    audio_bitrate_kbps: Annotated[
+        int | None, Field(description='Audio bitrate in kilobits per second', ge=1)
+    ] = None
+    audio_loudness_lufs: Annotated[
+        float | None, Field(description='Integrated loudness in LUFS')
+    ] = None
+    audio_true_peak_dbfs: Annotated[float | None, Field(description='True peak level in dBFS')] = (
+        None
+    )
+    captions_url: Annotated[
+        AnyUrl | None, Field(description='URL to captions file (WebVTT, SRT, etc.)')
     ] = None
-    scan_type: Annotated[ScanType | None, Field(description='Scan type of the video')] = None
     transcript_url: Annotated[
         AnyUrl | None, Field(description='URL to text transcript of the video content')
     ] = None
-    url: Annotated[AnyUrl, Field(description='URL to the video asset')]
-    video_bit_depth: Annotated[VideoBitDepth | None, Field(description='Video bit depth')] = None
-    video_bitrate_kbps: Annotated[
-        int | None, Field(description='Video stream bitrate in kilobits per second', ge=1)
+    audio_description_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to audio description track for visually impaired users'),
     ] = None
-    video_codec: Annotated[
-        str | None, Field(description='Video codec used (h264, h265, vp9, av1, prores, etc.)')
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(
+            description='Provenance metadata for this asset, overrides manifest-level provenance'
+        ),
     ] = None
-    width: Annotated[int, Field(description='Width in pixels', ge=1)]
diff --git a/src/adcp/types/generated_poc/core/assets/webhook_asset.py b/src/adcp/types/generated_poc/core/assets/webhook_asset.py
index 6a439be58..efcf7f641 100644
--- a/src/adcp/types/generated_poc/core/assets/webhook_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/webhook_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/webhook_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,28 +14,33 @@
 
 
 class Security(AdCPBaseModel):
-    api_key_header: Annotated[
-        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
-    ] = None
-    hmac_header: Annotated[
-        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
-    ] = None
     method: Annotated[
         webhook_security_method.WebhookSecurityMethod, Field(description='Authentication method')
     ]
+    hmac_header: Annotated[
+        str | None, Field(description="Header name for HMAC signature (e.g., 'X-Signature')")
+    ] = None
+    api_key_header: Annotated[
+        str | None, Field(description="Header name for API key (e.g., 'X-API-Key')")
+    ] = None
 
 
 class WebhookAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
     method: Annotated[http_method.HttpMethod | None, Field(description='HTTP method')] = (
         http_method.HttpMethod.POST
     )
-    provenance: Annotated[
-        provenance_1.Provenance | None,
+    timeout_ms: Annotated[
+        int | None,
+        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
+    ] = 500
+    supported_macros: Annotated[
+        list[universal_macro.UniversalMacro | str] | None,
         Field(
-            description='Provenance metadata for this asset, overrides manifest-level provenance'
+            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
         ),
     ] = None
     required_macros: Annotated[
@@ -47,14 +52,9 @@ class WebhookAsset(AdCPBaseModel):
         Field(description='Expected content type of webhook response'),
     ]
     security: Annotated[Security, Field(description='Security configuration for webhook calls')]
-    supported_macros: Annotated[
-        list[universal_macro.UniversalMacro | str] | None,
+    provenance: Annotated[
+        provenance_1.Provenance | None,
         Field(
-            description='Universal macros that can be passed to webhook (e.g., DEVICE_TYPE, COUNTRY). See docs/creative/universal-macros.mdx for full list.'
+            description='Provenance metadata for this asset, overrides manifest-level provenance'
         ),
     ] = None
-    timeout_ms: Annotated[
-        int | None,
-        Field(description='Maximum time to wait for response in milliseconds', ge=10, le=5000),
-    ] = 500
-    url: Annotated[AnyUrl, Field(description='Webhook URL to call for dynamic content')]
diff --git a/src/adcp/types/generated_poc/core/attribution_window.py b/src/adcp/types/generated_poc/core/attribution_window.py
index 01d2e79ba..c7e044a80 100644
--- a/src/adcp/types/generated_poc/core/attribution_window.py
+++ b/src/adcp/types/generated_poc/core/attribution_window.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/attribution_window.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,12 +17,6 @@ class AttributionWindow(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    model: Annotated[
-        attribution_model.AttributionModel,
-        Field(
-            description='Attribution model used to assign credit when multiple touchpoints exist'
-        ),
-    ]
     post_click: Annotated[
         duration.Duration | None,
         Field(
@@ -35,3 +29,9 @@ class AttributionWindow(AdCPBaseModel):
             description='Post-view attribution window. Conversions occurring within this duration after an ad impression (without click) are attributed to the ad.'
         ),
     ] = None
+    model: Annotated[
+        attribution_model.AttributionModel,
+        Field(
+            description='Attribution model used to assign credit when multiple touchpoints exist'
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/core/audience_member.py b/src/adcp/types/generated_poc/core/audience_member.py
index 9cf7efc9f..e2ff667c8 100644
--- a/src/adcp/types/generated_poc/core/audience_member.py
+++ b/src/adcp/types/generated_poc/core/audience_member.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/audience_member.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -25,7 +25,6 @@ class AudienceMember(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    ext: ext_1.ExtensionObject | None = None
     external_id: Annotated[
         str,
         Field(
@@ -53,3 +52,4 @@ class AudienceMember(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/audience_selector.py b/src/adcp/types/generated_poc/core/audience_selector.py
index dfd2f1bfe..f6ad0424d 100644
--- a/src/adcp/types/generated_poc/core/audience_selector.py
+++ b/src/adcp/types/generated_poc/core/audience_selector.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/audience_selector.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,12 +16,9 @@ class AudienceSelector4(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    category: Annotated[
-        str | None,
-        Field(
-            description="Optional grouping hint for the governance agent (e.g., 'demographic', 'behavioral', 'contextual', 'financial')"
-        ),
-    ] = None
+    type: Annotated[
+        Literal['description'], Field(description='Discriminator for description-based selectors')
+    ]
     description: Annotated[
         str,
         Field(
@@ -30,36 +27,39 @@ class AudienceSelector4(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    type: Annotated[
-        Literal['description'], Field(description='Discriminator for description-based selectors')
-    ]
+    category: Annotated[
+        str | None,
+        Field(
+            description="Optional grouping hint for the governance agent (e.g., 'demographic', 'behavioral', 'contextual', 'financial')"
+        ),
+    ] = None
 
 
 class AudienceSelector1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
     type: Annotated[
         Literal['signal'], Field(description='Discriminator for signal-based selectors')
     ]
+    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
+    value_type: Annotated[Literal['binary'], Field(description='Discriminator for binary signals')]
     value: Annotated[
         bool,
         Field(
             description='Whether to include (true) or exclude (false) users matching this signal'
         ),
     ]
-    value_type: Annotated[Literal['binary'], Field(description='Discriminator for binary signals')]
 
 
 class AudienceSelector2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
     type: Annotated[
         Literal['signal'], Field(description='Discriminator for signal-based selectors')
     ]
+    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
     value_type: Annotated[
         Literal['categorical'], Field(description='Discriminator for categorical signals')
     ]
@@ -76,25 +76,25 @@ class AudienceSelector3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    max_value: Annotated[
+    type: Annotated[
+        Literal['signal'], Field(description='Discriminator for signal-based selectors')
+    ]
+    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
+    value_type: Annotated[
+        Literal['numeric'], Field(description='Discriminator for numeric signals')
+    ]
+    min_value: Annotated[
         float | None,
         Field(
-            description='Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided.'
+            description='Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided.'
         ),
     ] = None
-    min_value: Annotated[
+    max_value: Annotated[
         float | None,
         Field(
-            description='Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided.'
+            description='Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided.'
         ),
     ] = None
-    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
-    type: Annotated[
-        Literal['signal'], Field(description='Discriminator for signal-based selectors')
-    ]
-    value_type: Annotated[
-        Literal['numeric'], Field(description='Discriminator for numeric signals')
-    ]
 
 
 class AudienceSelector(
diff --git a/src/adcp/types/generated_poc/core/brand_ref.py b/src/adcp/types/generated_poc/core/brand_ref.py
index 0094b23a2..1dd3066dc 100644
--- a/src/adcp/types/generated_poc/core/brand_ref.py
+++ b/src/adcp/types/generated_poc/core/brand_ref.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/brand_ref.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,12 +16,6 @@ class BrandReference(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    brand_id: Annotated[
-        brand_id_1.BrandId | None,
-        Field(
-            description='Brand identifier within the house portfolio. Optional for single-brand domains.'
-        ),
-    ] = None
     domain: Annotated[
         str,
         Field(
@@ -29,3 +23,9 @@ class BrandReference(AdCPBaseModel):
             pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
         ),
     ]
+    brand_id: Annotated[
+        brand_id_1.BrandId | None,
+        Field(
+            description='Brand identifier within the house portfolio. Optional for single-brand domains.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/business_entity.py b/src/adcp/types/generated_poc/core/business_entity.py
index ea45d6155..109254898 100644
--- a/src/adcp/types/generated_poc/core/business_entity.py
+++ b/src/adcp/types/generated_poc/core/business_entity.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/business_entity.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,50 +17,19 @@ class Address(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    city: Annotated[str, Field(max_length=100)]
-    country: Annotated[
-        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
+    street: Annotated[
+        str, Field(description='Street address including building number', max_length=200)
     ]
+    city: Annotated[str, Field(max_length=100)]
     postal_code: Annotated[str, Field(max_length=20)]
     region: Annotated[
         str | None, Field(description='State, province, or region', max_length=100)
     ] = None
-    street: Annotated[
-        str, Field(description='Street address including building number', max_length=200)
+    country: Annotated[
+        str, Field(description='ISO 3166-1 alpha-2 country code', pattern='^[A-Z]{2}$')
     ]
 
 
-class Bank(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
-    account_number: Annotated[
-        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
-    ] = None
-    bic: Annotated[
-        str | None,
-        Field(
-            description='Bank Identifier Code / SWIFT code (SEPA markets)',
-            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
-        ),
-    ] = None
-    iban: Annotated[
-        str | None,
-        Field(
-            description='International Bank Account Number (SEPA markets)',
-            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
-        ),
-    ] = None
-    routing_number: Annotated[
-        str | None,
-        Field(
-            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
-            max_length=30,
-        ),
-    ] = None
-
-
 class Role(Enum):
     billing = 'billing'
     legal = 'legal'
@@ -72,45 +41,59 @@ class Contact(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    email: Annotated[EmailStr | None, Field(max_length=254)] = None
+    role: Annotated[
+        Role, Field(description="Contact's functional role in the business relationship")
+    ]
     name: Annotated[str | None, Field(description='Full name of the contact', max_length=200)] = (
         None
     )
+    email: Annotated[EmailStr | None, Field(max_length=254)] = None
     phone: Annotated[str | None, Field(max_length=30)] = None
-    role: Annotated[
-        Role, Field(description="Contact's functional role in the business relationship")
-    ]
 
 
-class BusinessEntity(AdCPBaseModel):
+class Bank(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    address: Annotated[
-        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    account_holder: Annotated[str, Field(description='Name on the bank account', max_length=200)]
+    iban: Annotated[
+        str | None,
+        Field(
+            description='International Bank Account Number (SEPA markets)',
+            pattern='^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$',
+        ),
     ] = None
-    bank: Annotated[
-        Bank | None,
+    bic: Annotated[
+        str | None,
         Field(
-            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+            description='Bank Identifier Code / SWIFT code (SEPA markets)',
+            pattern='^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
         ),
     ] = None
-    contacts: Annotated[
-        list[Contact] | None,
+    routing_number: Annotated[
+        str | None,
         Field(
-            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
-            max_length=10,
+            description='Bank routing number for non-SEPA markets (e.g., US ABA routing number, Canadian transit/institution number)',
+            max_length=30,
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
+    account_number: Annotated[
+        str | None, Field(description='Bank account number for non-SEPA markets', max_length=30)
+    ] = None
+
+
+class BusinessEntity(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
     legal_name: Annotated[
         str, Field(description='Registered legal name of the business entity', max_length=200)
     ]
-    registration_number: Annotated[
+    vat_id: Annotated[
         str | None,
         Field(
-            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
-            max_length=50,
+            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
+            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
         ),
     ] = None
     tax_id: Annotated[
@@ -120,10 +103,27 @@ class BusinessEntity(AdCPBaseModel):
             max_length=30,
         ),
     ] = None
-    vat_id: Annotated[
+    registration_number: Annotated[
         str | None,
         Field(
-            description='VAT identification number (e.g., DE123456789 for Germany, FR12345678901 for France). Required for B2B invoicing in the EU. Must be normalized: no spaces, dots, or dashes.',
-            pattern='^[A-Z]{2}[A-Z0-9]{2,13}$',
+            description='Company registration number (e.g., HRB 12345 for German Handelsregister)',
+            max_length=50,
+        ),
+    ] = None
+    address: Annotated[
+        Address | None, Field(description='Postal address for invoicing and legal correspondence')
+    ] = None
+    contacts: Annotated[
+        list[Contact] | None,
+        Field(
+            description='Contacts for billing, legal, and operational matters. Contains personal data subject to GDPR and equivalent regulations. Implementations MUST use this data only for invoicing and account management.',
+            max_length=10,
         ),
     ] = None
+    bank: Annotated[
+        Bank | None,
+        Field(
+            description='Bank account details for payment processing. Write-only: included in requests to provide payment coordinates, but MUST NOT be echoed in responses. Sellers store these details and confirm receipt without returning them.'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/catalog.py b/src/adcp/types/generated_poc/core/catalog.py
index 7fc3ae449..46801a85f 100644
--- a/src/adcp/types/generated_poc/core/catalog.py
+++ b/src/adcp/types/generated_poc/core/catalog.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/catalog.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -31,30 +31,22 @@ class Catalog(AdCPBaseModel):
             description="Buyer's identifier for this catalog. Required when syncing via sync_catalogs. When used in creatives, references a previously synced catalog on the account."
         ),
     ] = None
-    category: Annotated[
+    name: Annotated[
         str | None,
         Field(
-            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
-        ),
-    ] = None
-    content_id_type: Annotated[
-        content_id_type_1.ContentIdType | None,
-        Field(
-            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum."
+            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
         ),
     ] = None
-    conversion_events: Annotated[
-        list[event_type.EventType] | None,
+    type: Annotated[
+        catalog_type.CatalogType,
         Field(
-            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
-            min_length=1,
+            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema."
         ),
-    ] = None
-    feed_field_mappings: Annotated[
-        list[catalog_field_mapping.CatalogFieldMapping] | None,
+    ]
+    url: Annotated[
+        AnyUrl | None,
         Field(
-            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
-            min_length=1,
+            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
         ),
     ] = None
     feed_format: Annotated[
@@ -63,10 +55,16 @@ class Catalog(AdCPBaseModel):
             description='Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON.'
         ),
     ] = None
-    gtins: Annotated[
-        list[Gtin] | None,
+    update_frequency: Annotated[
+        update_frequency_1.UpdateFrequency | None,
         Field(
-            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
+            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.'
+        ),
+    ] = None
+    items: Annotated[
+        list[dict[str, Any]] | None,
+        Field(
+            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
             min_length=1,
         ),
     ] = None
@@ -77,17 +75,24 @@ class Catalog(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    items: Annotated[
-        list[dict[str, Any]] | None,
+    gtins: Annotated[
+        list[Gtin] | None,
         Field(
-            description="Inline catalog data. The item schema depends on the catalog type: Offering objects for 'offering', StoreItem for 'store', HotelItem for 'hotel', FlightItem for 'flight', JobItem for 'job', VehicleItem for 'vehicle', RealEstateItem for 'real_estate', EducationItem for 'education', DestinationItem for 'destination', AppItem for 'app', or freeform objects for 'product', 'inventory', and 'promotion'. Mutually exclusive with url — provide one or the other, not both. Implementations should validate items against the type-specific schema.",
+            description="Filter product-type catalogs by GTIN identifiers for cross-retailer catalog matching. Accepts standard GTIN formats (GTIN-8, UPC-A/GTIN-12, EAN-13/GTIN-13, GTIN-14). Only applicable when type is 'product'.",
             min_length=1,
         ),
     ] = None
-    name: Annotated[
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            min_length=1,
+        ),
+    ] = None
+    category: Annotated[
         str | None,
         Field(
-            description="Human-readable name for this catalog (e.g., 'Summer Products 2025', 'Amsterdam Store Locations')."
+            description="Filter catalog to items in this category (e.g., 'beverages/soft-drinks', 'chef-positions')."
         ),
     ] = None
     query: Annotated[
@@ -96,28 +101,23 @@ class Catalog(AdCPBaseModel):
             description="Natural language filter for catalog items (e.g., 'all pasta sauces under $5', 'amsterdam vacancies')."
         ),
     ] = None
-    tags: Annotated[
-        list[str] | None,
+    conversion_events: Annotated[
+        list[event_type.EventType] | None,
         Field(
-            description='Filter catalog to items with these tags. Tags are matched using OR logic — items matching any tag are included.',
+            description="Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items — e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
             min_length=1,
         ),
     ] = None
-    type: Annotated[
-        catalog_type.CatalogType,
-        Field(
-            description="Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' — each with an industry-specific item schema."
-        ),
-    ]
-    update_frequency: Annotated[
-        update_frequency_1.UpdateFrequency | None,
+    content_id_type: Annotated[
+        content_id_type_1.ContentIdType | None,
         Field(
-            description='How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules.'
+            description="Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum."
         ),
     ] = None
-    url: Annotated[
-        AnyUrl | None,
+    feed_field_mappings: Annotated[
+        list[catalog_field_mapping.CatalogFieldMapping] | None,
         Field(
-            description="URL to an external catalog feed. The platform fetches and resolves items from this URL. For offering-type catalogs, the feed contains an array of Offering objects. For other types, the feed format is determined by feed_format. When omitted with type 'product', the platform uses its synced copy of the brand's product catalog."
+            description='Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.',
+            min_length=1,
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/catalog_field_mapping.py b/src/adcp/types/generated_poc/core/catalog_field_mapping.py
index 90deb571d..e0ce4a2cb 100644
--- a/src/adcp/types/generated_poc/core/catalog_field_mapping.py
+++ b/src/adcp/types/generated_poc/core/catalog_field_mapping.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/catalog_field_mapping.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,36 +24,34 @@ class CatalogFieldMapping(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_group_id: Annotated[
+    feed_field: Annotated[
         str | None,
         Field(
-            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
+            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
         ),
     ] = None
-    by: Annotated[
-        float | None,
+    catalog_field: Annotated[
+        str | None,
         Field(
-            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
-            gt=0.0,
+            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
         ),
     ] = None
-    catalog_field: Annotated[
+    asset_group_id: Annotated[
         str | None,
         Field(
-            description="Target field on the catalog item schema, using dot notation for nested fields (e.g., 'name', 'price.amount', 'location.city'). Mutually exclusive with asset_group_id."
+            description="Places the feed field value (a URL) into a typed asset pool on the catalog item's assets array. The value is wrapped as an image or video asset in a group with this ID. Use standard group IDs: 'images_landscape', 'images_vertical', 'images_square', 'logo', 'video'. Mutually exclusive with catalog_field."
         ),
     ] = None
-    default: Annotated[
+    value: Annotated[
         Any | None,
         Field(
-            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
+            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    feed_field: Annotated[
-        str | None,
+    transform: Annotated[
+        Transform | None,
         Field(
-            description='Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).'
+            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
         ),
     ] = None
     format: Annotated[
@@ -62,27 +60,29 @@ class CatalogFieldMapping(AdCPBaseModel):
             description="For transform 'date': the input date format string (e.g., 'YYYYMMDD', 'MM/DD/YYYY', 'DD-MM-YYYY'). Output is always ISO 8601 (e.g., '2025-03-01'). Uses Unicode date pattern tokens."
         ),
     ] = None
-    separator: Annotated[
-        str | None,
-        Field(
-            description="For transform 'split': the separator character or string to split on. Defaults to ','."
-        ),
-    ] = ','
     timezone: Annotated[
         str | None,
         Field(
             description="For transform 'date': the timezone of the input value. IANA timezone identifier (e.g., 'UTC', 'America/New_York', 'Europe/Amsterdam'). Defaults to UTC when omitted."
         ),
     ] = None
-    transform: Annotated[
-        Transform | None,
+    by: Annotated[
+        float | None,
         Field(
-            description='Named transform to apply to the feed field value before writing to the catalog schema. See transform-specific parameters (format, timezone, by, separator).'
+            description="For transform 'divide': the divisor to apply (e.g., 100 to convert integer cents to decimal dollars).",
+            gt=0.0,
         ),
     ] = None
-    value: Annotated[
+    separator: Annotated[
+        str | None,
+        Field(
+            description="For transform 'split': the separator character or string to split on. Defaults to ','."
+        ),
+    ] = ','
+    default: Annotated[
         Any | None,
         Field(
-            description='Static literal value to inject into catalog_field for every item, regardless of what the feed contains. Mutually exclusive with feed_field. Useful for fields the feed omits (e.g., currency when price is always USD, or a constant category value).'
+            description='Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value.'
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/catchment.py b/src/adcp/types/generated_poc/core/catchment.py
index 87a1e4a30..ff8a58eff 100644
--- a/src/adcp/types/generated_poc/core/catchment.py
+++ b/src/adcp/types/generated_poc/core/catchment.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/catchment.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,6 +15,19 @@
 from . import ext as ext_1
 
 
+class Unit(Enum):
+    min = 'min'
+    hr = 'hr'
+
+
+class TravelTime(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
+    unit: Annotated[Unit, Field(description='Time unit.')]
+
+
 class Type(Enum):
     Polygon = 'Polygon'
     MultiPolygon = 'MultiPolygon'
@@ -24,34 +37,21 @@ class Geometry(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    type: Annotated[Type, Field(description='GeoJSON geometry type.')]
     coordinates: Annotated[
         list[Any],
         Field(
             description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
         ),
     ]
-    type: Annotated[Type, Field(description='GeoJSON geometry type.')]
-
-
-class Unit(Enum):
-    min = 'min'
-    hr = 'hr'
-
-
-class TravelTime(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    unit: Annotated[Unit, Field(description='Time unit.')]
-    value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
 
 
 class Radius(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    unit: Annotated[distance_unit.DistanceUnit, Field(description='Distance unit.')]
     value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    unit: Annotated[distance_unit.DistanceUnit, Field(description='Distance unit.')]
 
 
 class Catchment(AdCPBaseModel):
@@ -64,23 +64,16 @@ class Catchment(AdCPBaseModel):
             description="Identifier for this catchment, used to reference specific catchment areas in targeting (e.g., 'walk', 'drive', 'primary')."
         ),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    geometry: Annotated[
-        Geometry | None,
-        Field(
-            description='Pre-computed GeoJSON geometry defining the catchment boundary. Use this when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom trade area boundaries. Supports Polygon and MultiPolygon types.'
-        ),
-    ] = None
     label: Annotated[
         str | None,
         Field(
             description="Human-readable label for this catchment (e.g., '15-min drive', '1km walking radius')."
         ),
     ] = None
-    radius: Annotated[
-        Radius | None,
+    travel_time: Annotated[
+        TravelTime | None,
         Field(
-            description="Simple radius from the store location. The platform draws a circle of this distance around the store's coordinates."
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks, accounting for road connectivity, transit schedules, and terrain.'
         ),
     ] = None
     transport_mode: Annotated[
@@ -89,9 +82,16 @@ class Catchment(AdCPBaseModel):
             description='Transportation mode for isochrone calculation. Required when travel_time is provided.'
         ),
     ] = None
-    travel_time: Annotated[
-        TravelTime | None,
+    radius: Annotated[
+        Radius | None,
         Field(
-            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks, accounting for road connectivity, transit schedules, and terrain.'
+            description="Simple radius from the store location. The platform draws a circle of this distance around the store's coordinates."
         ),
     ] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the catchment boundary. Use this when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom trade area boundaries. Supports Polygon and MultiPolygon types.'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/collection.py b/src/adcp/types/generated_poc/core/collection.py
index 2a7c0b0f4..501bb9977 100644
--- a/src/adcp/types/generated_poc/core/collection.py
+++ b/src/adcp/types/generated_poc/core/collection.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/collection.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -46,36 +46,20 @@ class Collection(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    cadence: Annotated[
-        collection_cadence.CollectionCadence | None,
-        Field(description='How frequently the collection releases new installments'),
-    ] = None
     collection_id: Annotated[
         str,
         Field(
             description="Publisher-assigned identifier for this collection. Declared in the publisher's adagents.json collections array. Products reference collections via collection selectors with publisher_domain and collection_ids. Use distribution identifiers for cross-seller matching across publishers."
         ),
     ]
-    content_rating: Annotated[
-        content_rating_1.ContentRating | None,
-        Field(
-            description='Baseline content rating for the collection. Individual installments may override this.'
-        ),
-    ] = None
-    deadline_policy: Annotated[
-        deadline_policy_1.DeadlinePolicy | None,
+    name: Annotated[str, Field(description='Human-readable collection name')]
+    kind: Annotated[
+        Kind | None,
         Field(
-            description="Default deadline rules for installments of this collection. Agents compute absolute deadlines from each installment's scheduled_at and these lead times. Installments with explicit deadlines override this policy."
+            description="What kind of content program this is. Helps agents interpret installments correctly: 'series' installments are TV/podcast episodes, 'publication' installments are print issues, 'event_series' installments are live event airings, 'rotation' installments are DOOH scheduling periods. Defaults to 'series' when absent."
         ),
     ] = None
     description: Annotated[str | None, Field(description='What the collection is about')] = None
-    distribution: Annotated[
-        list[collection_distribution.CollectionDistribution] | None,
-        Field(
-            description='Where this collection is distributed. Each entry maps the collection to a publisher platform with platform-specific identifiers. Collections SHOULD include at least one platform-independent identifier (imdb_id, gracenote_id, eidr_id) when available.'
-        ),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     genre: Annotated[
         list[str] | None,
         Field(
@@ -88,38 +72,39 @@ class Collection(AdCPBaseModel):
             description="Taxonomy system for genre values (e.g., 'iab_content_3.0'). When present, genre values should be valid taxonomy IDs. Recommended for machine-readable brand safety evaluation."
         ),
     ] = None
-    kind: Annotated[
-        Kind | None,
+    language: Annotated[
+        str | None, Field(description="Primary language (BCP 47 tag, e.g., 'en', 'es-MX')")
+    ] = None
+    content_rating: Annotated[
+        content_rating_1.ContentRating | None,
         Field(
-            description="What kind of content program this is. Helps agents interpret installments correctly: 'series' installments are TV/podcast episodes, 'publication' installments are print issues, 'event_series' installments are live event airings, 'rotation' installments are DOOH scheduling periods. Defaults to 'series' when absent."
+            description='Baseline content rating for the collection. Individual installments may override this.'
         ),
     ] = None
-    language: Annotated[
-        str | None, Field(description="Primary language (BCP 47 tag, e.g., 'en', 'es-MX')")
+    cadence: Annotated[
+        collection_cadence.CollectionCadence | None,
+        Field(description='How frequently the collection releases new installments'),
     ] = None
-    limited_series: Annotated[
-        limited_series_1.LimitedSeries | None,
+    season: Annotated[
+        str | None,
         Field(
-            description='When present, this collection is a limited series — a bounded run with a defined arc, installment count, and end date.'
+            description="Current or most recent season identifier (e.g., '3', '2026', 'spring_2026'). A lightweight label — not a full season object."
         ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable collection name')]
+    status: Annotated[
+        collection_status.CollectionStatus | None,
+        Field(description='Lifecycle status of the collection'),
+    ] = None
     production_quality: Annotated[
         production_quality_1.ProductionQuality | None,
         Field(
             description='Production quality tier. Seller-declared. Maps to OpenRTB content.prodq (professional=1, prosumer=2, ugc=3).'
         ),
     ] = None
-    related_collections: Annotated[
-        list[RelatedCollection] | None,
-        Field(
-            description="Relationships to other collections (spin-offs, companion collections, etc.). Each entry references another collection by collection_id within the same publisher's adagents.json."
-        ),
-    ] = None
-    season: Annotated[
-        str | None,
+    talent: Annotated[
+        list[talent_1.Talent] | None,
         Field(
-            description="Current or most recent season identifier (e.g., '3', '2026', 'spring_2026'). A lightweight label — not a full season object."
+            description='Hosts, recurring cast, creators associated with the collection. Each talent entry may include a brand_url linking to their brand.json identity.'
         ),
     ] = None
     special: Annotated[
@@ -128,13 +113,28 @@ class Collection(AdCPBaseModel):
             description='When present, this collection is a special — content anchored to a real-world event or occasion. Individual installments may override with their own event context.'
         ),
     ] = None
-    status: Annotated[
-        collection_status.CollectionStatus | None,
-        Field(description='Lifecycle status of the collection'),
+    limited_series: Annotated[
+        limited_series_1.LimitedSeries | None,
+        Field(
+            description='When present, this collection is a limited series — a bounded run with a defined arc, installment count, and end date.'
+        ),
     ] = None
-    talent: Annotated[
-        list[talent_1.Talent] | None,
+    distribution: Annotated[
+        list[collection_distribution.CollectionDistribution] | None,
         Field(
-            description='Hosts, recurring cast, creators associated with the collection. Each talent entry may include a brand_url linking to their brand.json identity.'
+            description='Where this collection is distributed. Each entry maps the collection to a publisher platform with platform-specific identifiers. Collections SHOULD include at least one platform-independent identifier (imdb_id, gracenote_id, eidr_id) when available.'
+        ),
+    ] = None
+    deadline_policy: Annotated[
+        deadline_policy_1.DeadlinePolicy | None,
+        Field(
+            description="Default deadline rules for installments of this collection. Agents compute absolute deadlines from each installment's scheduled_at and these lead times. Installments with explicit deadlines override this policy."
         ),
     ] = None
+    related_collections: Annotated[
+        list[RelatedCollection] | None,
+        Field(
+            description="Relationships to other collections (spin-offs, companion collections, etc.). Each entry references another collection by collection_id within the same publisher's adagents.json."
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/collection_list_ref.py b/src/adcp/types/generated_poc/core/collection_list_ref.py
new file mode 100644
index 000000000..999e361e2
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/collection_list_ref.py
@@ -0,0 +1,26 @@
+# generated by datamodel-codegen:
+#   filename:  core/collection_list_ref.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class CollectionListReference(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the collection list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the collection list within the agent', min_length=1)
+    ]
+    auth_token: Annotated[
+        str | None,
+        Field(
+            description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/collection_selector.py b/src/adcp/types/generated_poc/core/collection_selector.py
index 52f46c00a..cf438d858 100644
--- a/src/adcp/types/generated_poc/core/collection_selector.py
+++ b/src/adcp/types/generated_poc/core/collection_selector.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/collection_selector.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,13 +14,6 @@ class CollectionSelector(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    collection_ids: Annotated[
-        list[str],
-        Field(
-            description='Collection IDs from the adagents.json collections array. Each ID must match a collection_id declared in that file.',
-            min_length=1,
-        ),
-    ]
     publisher_domain: Annotated[
         str,
         Field(
@@ -28,3 +21,10 @@ class CollectionSelector(AdCPBaseModel):
             pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
         ),
     ]
+    collection_ids: Annotated[
+        list[str],
+        Field(
+            description='Collection IDs from the adagents.json collections array. Each ID must match a collection_id declared in that file.',
+            min_length=1,
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/core/content_rating.py b/src/adcp/types/generated_poc/core/content_rating.py
index 1ddeafd13..49517ba43 100644
--- a/src/adcp/types/generated_poc/core/content_rating.py
+++ b/src/adcp/types/generated_poc/core/content_rating.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/content_rating.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,9 +16,9 @@ class ContentRating(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    rating: Annotated[
-        str, Field(description="Rating value within the system (e.g., 'TV-PG', 'R', 'explicit')")
-    ]
     system: Annotated[
         content_rating_system.ContentRatingSystem, Field(description='Rating system used')
     ]
+    rating: Annotated[
+        str, Field(description="Rating value within the system (e.g., 'TV-PG', 'R', 'explicit')")
+    ]
diff --git a/src/adcp/types/generated_poc/core/context.py b/src/adcp/types/generated_poc/core/context.py
index 62cd4a1dc..50bcb8bef 100644
--- a/src/adcp/types/generated_poc/core/context.py
+++ b/src/adcp/types/generated_poc/core/context.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/context.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,7 +9,6 @@
 
 
 class ContextObject(AdCPBaseModel):
-    pass
     model_config = ConfigDict(
         extra='allow',
     )
diff --git a/src/adcp/types/generated_poc/core/creative_asset.py b/src/adcp/types/generated_poc/core/creative_asset.py
index 0b3a1d9d5..3d983ac5a 100644
--- a/src/adcp/types/generated_poc/core/creative_asset.py
+++ b/src/adcp/types/generated_poc/core/creative_asset.py
@@ -1,16 +1,17 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_asset.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field
+from pydantic import ConfigDict, Field, StringConstraints
 
 from ..enums import creative_status
 from . import format_id as format_id_1
+from . import industry_identifier
 from . import provenance as provenance_1
 from .assets import (
     audio_asset,
@@ -34,23 +35,31 @@ class Input(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    name: Annotated[str, Field(description='Human-readable name for this preview variant')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to apply for this preview')
+    ] = None
     context_description: Annotated[
         str | None,
         Field(description='Natural language description of the context for AI-generated content'),
     ] = None
-    macros: Annotated[
-        dict[str, str] | None, Field(description='Macro values to apply for this preview')
-    ] = None
-    name: Annotated[str, Field(description='Human-readable name for this preview variant')]
 
 
 class CreativeAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        format_id_1.FormatId,
+        Field(
+            description='Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.'
+        ),
+    ]
     assets: Annotated[
         dict[
-            str,
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
             image_asset.ImageAsset
             | video_asset.VideoAsset
             | audio_asset.AudioAsset
@@ -68,32 +77,14 @@ class CreativeAsset(AdCPBaseModel):
         ],
         Field(description='Assets required by the format, keyed by asset_id'),
     ]
-    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
-    format_id: Annotated[
-        format_id_1.FormatId,
-        Field(
-            description='Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats.'
-        ),
-    ]
     inputs: Annotated[
         list[Input] | None,
         Field(
             description='Preview contexts for generative formats - defines what scenarios to generate previews for'
         ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable creative name')]
-    placement_ids: Annotated[
-        list[str] | None,
-        Field(
-            description="Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
-            min_length=1,
-        ),
-    ] = None
-    provenance: Annotated[
-        provenance_1.Provenance | None,
-        Field(
-            description='Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).'
-        ),
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
     ] = None
     status: Annotated[
         creative_status.CreativeStatus | None,
@@ -101,9 +92,6 @@ class CreativeAsset(AdCPBaseModel):
             description="For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state)."
         ),
     ] = None
-    tags: Annotated[
-        list[str] | None, Field(description='User-defined tags for organization and searchability')
-    ] = None
     weight: Annotated[
         float | None,
         Field(
@@ -112,3 +100,22 @@ class CreativeAsset(AdCPBaseModel):
             le=100.0,
         ),
     ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run when uploading via create_media_buy or update_media_buy. References placement_id values from the product's placements array. If omitted, creative runs on all placements. Only used during upload to media buy - not stored in creative library.",
+            min_length=1,
+        ),
+    ] = None
+    industry_identifiers: Annotated[
+        list[industry_identifier.IndustryIdentifier] | None,
+        Field(
+            description='Industry-standard identifiers for this creative (e.g., Ad-ID, ISCI, Clearcast clock number). In broadcast buying, these identifiers tie the creative to rotation instructions and traffic systems. A creative may have multiple identifiers when different systems reference the same asset.'
+        ),
+    ] = None
+    provenance: Annotated[
+        provenance_1.Provenance | None,
+        Field(
+            description='Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging).'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/creative_assignment.py b/src/adcp/types/generated_poc/core/creative_assignment.py
index fccbe8af8..d8ce03ed9 100644
--- a/src/adcp/types/generated_poc/core/creative_assignment.py
+++ b/src/adcp/types/generated_poc/core/creative_assignment.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_assignment.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,13 +15,6 @@ class CreativeAssignment(AdCPBaseModel):
         extra='allow',
     )
     creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
-    placement_ids: Annotated[
-        list[str] | None,
-        Field(
-            description="Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
-            min_length=1,
-        ),
-    ] = None
     weight: Annotated[
         float | None,
         Field(
@@ -30,3 +23,10 @@ class CreativeAssignment(AdCPBaseModel):
             le=100.0,
         ),
     ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Optional array of placement IDs where this creative should run. When omitted, the creative runs on all placements in the package. References placement_id values from the product's placements array.",
+            min_length=1,
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/creative_brief.py b/src/adcp/types/generated_poc/core/creative_brief.py
index a6b77a98b..3c4a4079a 100644
--- a/src/adcp/types/generated_poc/core/creative_brief.py
+++ b/src/adcp/types/generated_poc/core/creative_brief.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_brief.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,34 +14,41 @@
 from . import reference_asset
 
 
-class Jurisdiction(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
+class Objective(Enum):
+    awareness = 'awareness'
+    consideration = 'consideration'
+    conversion = 'conversion'
+    retention = 'retention'
+    engagement = 'engagement'
 
 
 class Messaging(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
     headline: Annotated[str | None, Field(description='Primary headline')] = None
+    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
+    cta: Annotated[str | None, Field(description='Call-to-action text')] = None
     key_messages: Annotated[
         list[str] | None, Field(description='Key messages to communicate in priority order')
     ] = None
-    tagline: Annotated[str | None, Field(description='Supporting tagline or sub-headline')] = None
 
 
-class Objective(Enum):
-    awareness = 'awareness'
-    consideration = 'consideration'
-    conversion = 'conversion'
-    retention = 'retention'
-    engagement = 'engagement'
+class Jurisdiction(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}(-[A-Z0-9]{1,3})?$')]
 
 
 class RequiredDisclosure(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
+    position: Annotated[
+        disclosure_position.DisclosurePosition | None,
+        Field(
+            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative'
+        ),
+    ] = None
     jurisdictions: Annotated[
         list[Jurisdiction] | None,
         Field(
@@ -49,10 +56,10 @@ class RequiredDisclosure(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    language: Annotated[
+    regulation: Annotated[
         str | None,
         Field(
-            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
+            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
         ),
     ] = None
     min_duration_ms: Annotated[
@@ -62,42 +69,35 @@ class RequiredDisclosure(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    persistence: Annotated[
-        disclosure_persistence.DisclosurePersistence | None,
-        Field(
-            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.'
-        ),
-    ] = None
-    position: Annotated[
-        disclosure_position.DisclosurePosition | None,
+    language: Annotated[
+        str | None,
         Field(
-            description='Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative'
+            description="Language of the disclosure text as a BCP 47 language tag (e.g., 'en', 'fr-CA', 'es'). When omitted, the disclosure is assumed to match the creative's language."
         ),
     ] = None
-    regulation: Annotated[
-        str | None,
+    persistence: Annotated[
+        disclosure_persistence.DisclosurePersistence | None,
         Field(
-            description="The regulation or legal authority requiring this disclosure (e.g., 'SEC Rule 156', 'FCA COBS 4.5', 'FDA 21 CFR 202')"
+            description='How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format.'
         ),
     ] = None
-    text: Annotated[str, Field(description='The disclosure text that must appear in the creative')]
 
 
 class Compliance(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    prohibited_claims: Annotated[
-        list[str] | None,
+    required_disclosures: Annotated[
+        list[RequiredDisclosure] | None,
         Field(
-            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
+            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
             min_length=1,
         ),
     ] = None
-    required_disclosures: Annotated[
-        list[RequiredDisclosure] | None,
+    prohibited_claims: Annotated[
+        list[str] | None,
         Field(
-            description='Disclosures that must appear in creatives for this campaign. Each disclosure specifies the text, where it should appear, and which jurisdictions require it.',
+            description='Claims that must not appear in creatives for this campaign. Creative agents should ensure generated content avoids these claims.',
             min_length=1,
         ),
     ] = None
@@ -107,18 +107,6 @@ class CreativeBrief(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    audience: Annotated[
-        str | None, Field(description='Target audience description for this campaign')
-    ] = None
-    compliance: Annotated[
-        Compliance | None,
-        Field(
-            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
-        ),
-    ] = None
-    messaging: Annotated[
-        Messaging | None, Field(description='Messaging framework for the campaign')
-    ] = None
     name: Annotated[str, Field(description='Campaign or flight name for identification')]
     objective: Annotated[
         Objective | None,
@@ -126,19 +114,31 @@ class CreativeBrief(AdCPBaseModel):
             description='Campaign objective that guides creative tone and call-to-action strategy'
         ),
     ] = None
-    reference_assets: Annotated[
-        list[reference_asset.ReferenceAsset] | None,
+    tone: Annotated[
+        str | None,
         Field(
-            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
         ),
     ] = None
+    audience: Annotated[
+        str | None, Field(description='Target audience description for this campaign')
+    ] = None
     territory: Annotated[
         str | None,
         Field(description='Creative territory or positioning the campaign should occupy'),
     ] = None
-    tone: Annotated[
-        str | None,
+    messaging: Annotated[
+        Messaging | None, Field(description='Messaging framework for the campaign')
+    ] = None
+    reference_assets: Annotated[
+        list[reference_asset.ReferenceAsset] | None,
         Field(
-            description="Desired tone for this campaign, modulating the brand's base tone (e.g., 'playful and festive', 'premium and aspirational')"
+            description='Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents'
+        ),
+    ] = None
+    compliance: Annotated[
+        Compliance | None,
+        Field(
+            description='Regulatory and legal compliance requirements for this campaign. Campaign-specific, regional, and product-based — distinct from brand-level disclaimers in brand.json.'
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/creative_consumption.py b/src/adcp/types/generated_poc/core/creative_consumption.py
new file mode 100644
index 000000000..bcb6e7362
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/creative_consumption.py
@@ -0,0 +1,33 @@
+# generated by datamodel-codegen:
+#   filename:  core/creative_consumption.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class CreativeConsumption(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    tokens: Annotated[
+        int | None,
+        Field(description='LLM or generation tokens consumed during creative generation.', ge=0),
+    ] = None
+    images_generated: Annotated[
+        int | None, Field(description='Number of images produced during generation.', ge=0)
+    ] = None
+    renders: Annotated[
+        int | None, Field(description='Number of render passes performed (video, animation).', ge=0)
+    ] = None
+    duration_seconds: Annotated[
+        float | None,
+        Field(
+            description='Processing time billed, in seconds. For compute-time pricing models.',
+            ge=0.0,
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/creative_filters.py b/src/adcp/types/generated_poc/core/creative_filters.py
index b17c0ad5a..a49c85bb5 100644
--- a/src/adcp/types/generated_poc/core/creative_filters.py
+++ b/src/adcp/types/generated_poc/core/creative_filters.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_filters.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,19 +24,25 @@ class CreativeFilters(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    assigned_to_packages: Annotated[
+    statuses: Annotated[
+        list[creative_status.CreativeStatus] | None,
+        Field(description='Filter by creative approval statuses', min_length=1),
+    ] = None
+    tags: Annotated[
         list[str] | None,
-        Field(
-            description='Filter creatives assigned to any of these packages. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.',
-            min_length=1,
-        ),
+        Field(description='Filter by creative tags (all tags must match)', min_length=1),
     ] = None
-    concept_ids: Annotated[
+    tags_any: Annotated[
         list[str] | None,
-        Field(
-            description='Filter by creative concept IDs. Concepts group related creatives across sizes and formats (e.g., Flashtalking concepts, Celtra campaign folders, CM360 creative groups).',
-            min_length=1,
-        ),
+        Field(description='Filter by creative tags (any tag must match)', min_length=1),
+    ] = None
+    name_contains: Annotated[
+        str | None,
+        Field(description='Filter by creative names containing this text (case-insensitive)'),
+    ] = None
+    creative_ids: Annotated[
+        list[str] | None,
+        Field(description='Filter by specific creative IDs', max_length=100, min_length=1),
     ] = None
     created_after: Annotated[
         AwareDatetime | None,
@@ -46,63 +52,57 @@ class CreativeFilters(AdCPBaseModel):
         AwareDatetime | None,
         Field(description='Filter creatives created before this date (ISO 8601)'),
     ] = None
-    creative_ids: Annotated[
+    updated_after: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter creatives last updated after this date (ISO 8601)'),
+    ] = None
+    updated_before: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter creatives last updated before this date (ISO 8601)'),
+    ] = None
+    assigned_to_packages: Annotated[
         list[str] | None,
-        Field(description='Filter by specific creative IDs', max_length=100, min_length=1),
+        Field(
+            description='Filter creatives assigned to any of these packages. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.',
+            min_length=1,
+        ),
     ] = None
-    format_ids: Annotated[
-        list[format_id.FormatId] | None,
+    media_buy_ids: Annotated[
+        list[str] | None,
         Field(
-            description='Filter by structured format IDs. Returns creatives that match any of these formats.',
+            description='Filter creatives assigned to any of these media buys. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.',
             min_length=1,
         ),
     ] = None
-    has_served: Annotated[
+    unassigned: Annotated[
         bool | None,
         Field(
-            description='When true, return only creatives that have served at least one impression. When false, return only creatives that have never served.'
+            description='Filter for unassigned creatives when true, assigned creatives when false. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.'
         ),
     ] = None
-    has_variables: Annotated[
+    has_served: Annotated[
         bool | None,
         Field(
-            description='When true, return only creatives with dynamic variables (DCO). When false, return only static creatives.'
+            description='When true, return only creatives that have served at least one impression. When false, return only creatives that have never served.'
         ),
     ] = None
-    media_buy_ids: Annotated[
+    concept_ids: Annotated[
         list[str] | None,
         Field(
-            description='Filter creatives assigned to any of these media buys. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.',
+            description='Filter by creative concept IDs. Concepts group related creatives across sizes and formats (e.g., Flashtalking concepts, Celtra campaign folders, CM360 creative groups).',
             min_length=1,
         ),
     ] = None
-    name_contains: Annotated[
-        str | None,
-        Field(description='Filter by creative names containing this text (case-insensitive)'),
-    ] = None
-    statuses: Annotated[
-        list[creative_status.CreativeStatus] | None,
-        Field(description='Filter by creative approval statuses', min_length=1),
-    ] = None
-    tags: Annotated[
-        list[str] | None,
-        Field(description='Filter by creative tags (all tags must match)', min_length=1),
-    ] = None
-    tags_any: Annotated[
-        list[str] | None,
-        Field(description='Filter by creative tags (any tag must match)', min_length=1),
+    format_ids: Annotated[
+        list[format_id.FormatId] | None,
+        Field(
+            description='Filter by structured format IDs. Returns creatives that match any of these formats.',
+            min_length=1,
+        ),
     ] = None
-    unassigned: Annotated[
+    has_variables: Annotated[
         bool | None,
         Field(
-            description='Filter for unassigned creatives when true, assigned creatives when false. Sales-agent-specific — standalone creative agents SHOULD ignore this filter.'
+            description='When true, return only creatives with dynamic variables (DCO). When false, return only static creatives.'
         ),
     ] = None
-    updated_after: Annotated[
-        AwareDatetime | None,
-        Field(description='Filter creatives last updated after this date (ISO 8601)'),
-    ] = None
-    updated_before: Annotated[
-        AwareDatetime | None,
-        Field(description='Filter creatives last updated before this date (ISO 8601)'),
-    ] = None
diff --git a/src/adcp/types/generated_poc/core/creative_item.py b/src/adcp/types/generated_poc/core/creative_item.py
index b7341025b..7051937b1 100644
--- a/src/adcp/types/generated_poc/core/creative_item.py
+++ b/src/adcp/types/generated_poc/core/creative_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,9 +14,6 @@ class CreativeItem1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_id: Annotated[
-        str, Field(description='Unique identifier for the asset within the creative')
-    ]
     asset_kind: Annotated[
         Literal['media'],
         Field(description='Discriminator indicating this is a media asset with content_uri'),
@@ -27,6 +24,9 @@ class CreativeItem1(AdCPBaseModel):
             description='Type of asset. Common types: thumbnail_image, product_image, featured_image, logo'
         ),
     ]
+    asset_id: Annotated[
+        str, Field(description='Unique identifier for the asset within the creative')
+    ]
     content_uri: Annotated[AnyUrl, Field(description='URL for media assets (images, videos, etc.)')]
 
 
@@ -34,9 +34,6 @@ class CreativeItem2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_id: Annotated[
-        str, Field(description='Unique identifier for the asset within the creative')
-    ]
     asset_kind: Annotated[
         Literal['text'],
         Field(description='Discriminator indicating this is a text asset with content'),
@@ -47,6 +44,9 @@ class CreativeItem2(AdCPBaseModel):
             description='Type of asset. Common types: headline, body_text, cta_text, price_text, sponsor_name, author_name, click_url'
         ),
     ]
+    asset_id: Annotated[
+        str, Field(description='Unique identifier for the asset within the creative')
+    ]
     content: Annotated[
         str | list[str],
         Field(
diff --git a/src/adcp/types/generated_poc/core/creative_manifest.py b/src/adcp/types/generated_poc/core/creative_manifest.py
index 1615872bd..b5db8fbd3 100644
--- a/src/adcp/types/generated_poc/core/creative_manifest.py
+++ b/src/adcp/types/generated_poc/core/creative_manifest.py
@@ -1,16 +1,17 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_manifest.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field
+from pydantic import ConfigDict, Field, StringConstraints
 
 from . import ext as ext_1
 from . import format_id as format_id_1
+from . import industry_identifier
 from . import provenance as provenance_1
 from . import rights_constraint
 from .assets import (
@@ -35,9 +36,15 @@ class CreativeManifest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    format_id: Annotated[
+        format_id_1.FormatId,
+        Field(
+            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'})."
+        ),
+    ]
     assets: Annotated[
         dict[
-            str,
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
             image_asset.ImageAsset
             | video_asset.VideoAsset
             | audio_asset.AudioAsset
@@ -57,22 +64,22 @@ class CreativeManifest(AdCPBaseModel):
             description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.\n\nIMPORTANT: Full validation requires format context. The format defines what type each asset_id should be. Standalone schema validation only checks structural conformance — each asset must match at least one valid asset type schema."
         ),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    format_id: Annotated[
-        format_id_1.FormatId,
+    rights: Annotated[
+        list[rights_constraint.RightsConstraint] | None,
         Field(
-            description="Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'})."
+            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
         ),
-    ]
-    provenance: Annotated[
-        provenance_1.Provenance | None,
+    ] = None
+    industry_identifiers: Annotated[
+        list[industry_identifier.IndustryIdentifier] | None,
         Field(
-            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).'
+            description='Industry-standard identifiers for this specific manifest (e.g., Ad-ID, ISCI, Clearcast clock number). When present, overrides creative-level identifiers. Use when different format versions of the same source creative have distinct Ad-IDs (e.g., the :15 and :30 cuts).'
         ),
     ] = None
-    rights: Annotated[
-        list[rights_constraint.RightsConstraint] | None,
+    provenance: Annotated[
+        provenance_1.Provenance | None,
         Field(
-            description='Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata — the buyer/orchestrator manages creative lifecycle against these terms.'
+            description='Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging).'
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/creative_policy.py b/src/adcp/types/generated_poc/core/creative_policy.py
index f68929be4..5f159849e 100644
--- a/src/adcp/types/generated_poc/core/creative_policy.py
+++ b/src/adcp/types/generated_poc/core/creative_policy.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_policy.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -23,12 +23,12 @@ class CreativePolicy(AdCPBaseModel):
         landing_page_requirement.LandingPageRequirement,
         Field(description='Landing page requirements'),
     ]
+    templates_available: Annotated[
+        bool, Field(description='Whether creative templates are provided')
+    ]
     provenance_required: Annotated[
         bool | None,
         Field(
             description='Whether creatives must include provenance metadata. When true, the seller requires buyers to attach provenance declarations to creative submissions. The seller may independently verify claims via get_creative_features.'
         ),
     ] = None
-    templates_available: Annotated[
-        bool, Field(description='Whether creative templates are provided')
-    ]
diff --git a/src/adcp/types/generated_poc/core/creative_variable.py b/src/adcp/types/generated_poc/core/creative_variable.py
index caa25e6c5..5737343b5 100644
--- a/src/adcp/types/generated_poc/core/creative_variable.py
+++ b/src/adcp/types/generated_poc/core/creative_variable.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_variable.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -27,21 +27,21 @@ class CreativeVariable(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    variable_id: Annotated[str, Field(description='Variable identifier on the creative platform')]
+    name: Annotated[str, Field(description='Human-readable variable name')]
+    variable_type: Annotated[
+        VariableType,
+        Field(
+            description='Data type of the variable. Each type represents a semantic content slot: text (headlines, body copy), image/video/audio (media URLs), url (clickthrough or tracking URLs), number (prices, counts), boolean (conditional flags like show_discount or is_raining), color (hex color values), date (ISO 8601 date-time for countdowns and offer expirations).'
+        ),
+    ]
     default_value: Annotated[
         str | None,
         Field(
             description='Default value used when no dynamic value is provided at serve time. All types are string-encoded: text/image/video/audio/url as literal strings, number as decimal (e.g., "42.99"), boolean as "true"/"false", color as "#RRGGBB", date as ISO 8601 (e.g., "2026-12-25T00:00:00Z").'
         ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable variable name')]
     required: Annotated[
         bool | None,
         Field(description='Whether this variable must have a value for the creative to serve'),
     ] = False
-    variable_id: Annotated[str, Field(description='Variable identifier on the creative platform')]
-    variable_type: Annotated[
-        VariableType,
-        Field(
-            description='Data type of the variable. Each type represents a semantic content slot: text (headlines, body copy), image/video/audio (media URLs), url (clickthrough or tracking URLs), number (prices, counts), boolean (conditional flags like show_discount or is_raining), color (hex color values), date (ISO 8601 date-time for countdowns and offer expirations).'
-        ),
-    ]
diff --git a/src/adcp/types/generated_poc/core/creative_variant.py b/src/adcp/types/generated_poc/core/creative_variant.py
index 859d5d5bf..552895068 100644
--- a/src/adcp/types/generated_poc/core/creative_variant.py
+++ b/src/adcp/types/generated_poc/core/creative_variant.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_variant.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,42 +19,42 @@ class Artifact(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    artifact_id: Annotated[str, Field(description='Artifact identifier within the property')]
     property_id: Annotated[
         identifier.Identifier, Field(description='Property where the artifact appears')
     ]
+    artifact_id: Annotated[str, Field(description='Artifact identifier within the property')]
 
 
 class GenerationContext(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    artifact: Annotated[
-        Artifact | None,
-        Field(
-            description='Reference to the content-standards artifact that provided the generation context. Links this variant to the specific piece of content (article, video, podcast segment, etc.) where the ad was placed.'
-        ),
-    ] = None
     context_type: Annotated[
         str | None,
         Field(
             description="Type of context that triggered generation (e.g., 'web_page', 'conversational', 'search', 'app', 'dooh')"
         ),
     ] = None
+    artifact: Annotated[
+        Artifact | None,
+        Field(
+            description='Reference to the content-standards artifact that provided the generation context. Links this variant to the specific piece of content (article, video, podcast segment, etc.) where the ad was placed.'
+        ),
+    ] = None
     ext: ext_1.ExtensionObject | None = None
 
 
 class CreativeVariant(DeliveryMetrics):
-    generation_context: Annotated[
-        GenerationContext | None,
-        Field(
-            description='Input signals that triggered generation of this variant (Tier 3). Describes why the platform created this specific variant. Platforms should provide summarized or anonymized signals rather than raw user input. For web contexts, may include page topic or URL. For conversational contexts, an anonymized content signal. For search, query category or intent. When the content context is managed through AdCP content standards, reference the artifact directly via the artifact field.'
-        ),
-    ] = None
+    variant_id: Annotated[str, Field(description='Platform-assigned identifier for this variant')]
     manifest: Annotated[
         creative_manifest.CreativeManifest | None,
         Field(
             description='The rendered creative manifest for this variant — the actual output that was served, not the input assets. Contains format_id and the resolved assets (specific headline, image, video, etc. the platform selected or generated). For Tier 2, shows which asset combination was picked. For Tier 3, contains the generated assets which may differ entirely from the input brand identity. Pass to preview_creative to re-render.'
         ),
     ] = None
-    variant_id: Annotated[str, Field(description='Platform-assigned identifier for this variant')]
+    generation_context: Annotated[
+        GenerationContext | None,
+        Field(
+            description='Input signals that triggered generation of this variant (Tier 3). Describes why the platform created this specific variant. Platforms should provide summarized or anonymized signals rather than raw user input. For web contexts, may include page topic or URL. For conversational contexts, an anonymized content signal. For search, query category or intent. When the content context is managed through AdCP content standards, reference the artifact directly via the artifact field.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/date_range.py b/src/adcp/types/generated_poc/core/date_range.py
index 00d1d7a9f..ae8ec7483 100644
--- a/src/adcp/types/generated_poc/core/date_range.py
+++ b/src/adcp/types/generated_poc/core/date_range.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/date_range.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,5 +15,5 @@ class DateRange(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    end: Annotated[date_aliased, Field(description='End date (inclusive), ISO 8601')]
     start: Annotated[date_aliased, Field(description='Start date (inclusive), ISO 8601')]
+    end: Annotated[date_aliased, Field(description='End date (inclusive), ISO 8601')]
diff --git a/src/adcp/types/generated_poc/core/datetime_range.py b/src/adcp/types/generated_poc/core/datetime_range.py
index ed2834174..7cfe89fe2 100644
--- a/src/adcp/types/generated_poc/core/datetime_range.py
+++ b/src/adcp/types/generated_poc/core/datetime_range.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/datetime_range.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,5 +14,5 @@ class DatetimeRange(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    end: Annotated[AwareDatetime, Field(description='End timestamp (inclusive), ISO 8601')]
     start: Annotated[AwareDatetime, Field(description='Start timestamp (inclusive), ISO 8601')]
+    end: Annotated[AwareDatetime, Field(description='End timestamp (inclusive), ISO 8601')]
diff --git a/src/adcp/types/generated_poc/core/daypart_target.py b/src/adcp/types/generated_poc/core/daypart_target.py
index ce8e3335f..f57ca0af0 100644
--- a/src/adcp/types/generated_poc/core/daypart_target.py
+++ b/src/adcp/types/generated_poc/core/daypart_target.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/daypart_target.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -23,6 +23,14 @@ class DaypartTarget(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    start_hour: Annotated[
+        int,
+        Field(
+            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
+            ge=0,
+            le=23,
+        ),
+    ]
     end_hour: Annotated[
         int,
         Field(
@@ -37,11 +45,3 @@ class DaypartTarget(AdCPBaseModel):
             description="Optional human-readable name for this time window (e.g., 'Morning Drive', 'Prime Time')"
         ),
     ] = None
-    start_hour: Annotated[
-        int,
-        Field(
-            description='Start hour (inclusive), 0-23 in 24-hour format. 0 = midnight, 6 = 6:00am, 18 = 6:00pm.',
-            ge=0,
-            le=23,
-        ),
-    ]
diff --git a/src/adcp/types/generated_poc/core/deadline_policy.py b/src/adcp/types/generated_poc/core/deadline_policy.py
index bd81649e2..1b6ca0ae5 100644
--- a/src/adcp/types/generated_poc/core/deadline_policy.py
+++ b/src/adcp/types/generated_poc/core/deadline_policy.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/deadline_policy.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,8 +14,6 @@ class MaterialStage(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    label: Annotated[str | None, Field(description='What the seller needs at this stage')] = None
-    lead_days: Annotated[int, Field(description='Days before scheduled_at this stage is due', ge=0)]
     stage: Annotated[
         str,
         Field(
@@ -23,6 +21,8 @@ class MaterialStage(AdCPBaseModel):
             examples=['draft', 'final'],
         ),
     ]
+    lead_days: Annotated[int, Field(description='Days before scheduled_at this stage is due', ge=0)]
+    label: Annotated[str | None, Field(description='What the seller needs at this stage')] = None
 
 
 class DeadlinePolicy(AdCPBaseModel):
@@ -33,12 +33,6 @@ class DeadlinePolicy(AdCPBaseModel):
         int | None,
         Field(description='Days before scheduled_at by which the placement must be booked', ge=0),
     ] = None
-    business_days_only: Annotated[
-        bool | None,
-        Field(
-            description='When true, lead_days counts business days (Mon-Fri) rather than calendar days. Defaults to false.'
-        ),
-    ] = False
     cancellation_lead_days: Annotated[
         int | None,
         Field(description='Days before scheduled_at by which cancellation is penalty-free', ge=0),
@@ -50,3 +44,9 @@ class DeadlinePolicy(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    business_days_only: Annotated[
+        bool | None,
+        Field(
+            description='When true, lead_days counts business days (Mon-Fri) rather than calendar days. Defaults to false.'
+        ),
+    ] = False
diff --git a/src/adcp/types/generated_poc/core/delivery_forecast.py b/src/adcp/types/generated_poc/core/delivery_forecast.py
index 4cd4594b4..693411e2a 100644
--- a/src/adcp/types/generated_poc/core/delivery_forecast.py
+++ b/src/adcp/types/generated_poc/core/delivery_forecast.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/delivery_forecast.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -21,54 +21,76 @@ class DeliveryForecast(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    currency: Annotated[
-        str,
+    points: Annotated[
+        list[forecast_point.ForecastPoint],
         Field(
-            description='ISO 4217 currency code for monetary values in this forecast (spend, budget)'
+            description='Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.',
+            min_length=1,
         ),
     ]
-    demographic: Annotated[
-        str | None,
+    forecast_range_unit: Annotated[
+        forecast_range_unit_1.ForecastRangeUnit | None,
         Field(
-            description='Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.',
-            examples=['P18-49', 'A25-54', 'W35+', 'M18-34'],
+            description="How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets. 'package': each point is a distinct inventory package."
         ),
     ] = None
+    method: Annotated[
+        forecast_method.ForecastMethod, Field(description='Method used to produce this forecast')
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description='ISO 4217 currency code for monetary values in this forecast (spend, budget)'
+        ),
+    ]
     demographic_system: Annotated[
         demographic_system_1.DemographicSystem | None,
         Field(
             description='Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    forecast_range_unit: Annotated[
-        forecast_range_unit_1.ForecastRangeUnit | None,
+    demographic: Annotated[
+        str | None,
         Field(
-            description="How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets."
+            description='Target demographic code within the specified demographic_system. For Nielsen: P18-49, M25-54, W35+. For BARB: ABC1 Adults, 16-34. For AGF: E 14-49.',
+            examples=['P18-49', 'A25-54', 'W35+', 'M18-34'],
         ),
     ] = None
-    generated_at: Annotated[
-        AwareDatetime | None, Field(description='When this forecast was computed')
-    ] = None
-    method: Annotated[
-        forecast_method.ForecastMethod, Field(description='Method used to produce this forecast')
-    ]
-    points: Annotated[
-        list[forecast_point.ForecastPoint],
+    measurement_source: Annotated[
+        str | None,
         Field(
-            description='Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.',
-            min_length=1,
+            description='Third-party measurement provider whose data was used to produce this forecast. Distinct from demographic_system, which specifies demographic notation — measurement_source identifies whose data produced the forecast numbers. Should be present when measured_impressions is used. Lowercase slug format.',
+            examples=[
+                'nielsen',
+                'videoamp',
+                'comscore',
+                'geopath',
+                'barb',
+                'agf',
+                'oztam',
+                'kantar',
+                'barc',
+                'route',
+                'rajar',
+                'triton',
+            ],
+            max_length=64,
+            pattern='^[a-z0-9_]+$',
         ),
-    ]
+    ] = None
     reach_unit: Annotated[
         reach_unit_1.ReachUnit | None,
         Field(
             description='Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison.'
         ),
     ] = None
+    generated_at: Annotated[
+        AwareDatetime | None, Field(description='When this forecast was computed')
+    ] = None
     valid_until: Annotated[
         AwareDatetime | None,
         Field(
             description='When this forecast expires. After this time, the forecast should be refreshed. Forecast expiry does not affect proposal executability.'
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/delivery_metrics.py b/src/adcp/types/generated_poc/core/delivery_metrics.py
index c584644ea..1181da950 100644
--- a/src/adcp/types/generated_poc/core/delivery_metrics.py
+++ b/src/adcp/types/generated_poc/core/delivery_metrics.py
@@ -1,10 +1,9 @@
 # generated by datamodel-codegen:
 #   filename:  core/delivery_metrics.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
-from enum import Enum
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
@@ -13,82 +12,95 @@
 from ..enums import action_source as action_source_1
 from ..enums import event_type as event_type_1
 from ..enums import reach_unit as reach_unit_1
+from ..enums import viewability_standard
 
 
-class ByActionSourceItem(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    action_source: Annotated[
-        action_source_1.ActionSource, Field(description='Where the conversion occurred')
-    ]
-    count: Annotated[
-        float, Field(description='Number of conversions from this action source', ge=0.0)
-    ]
-    event_source_id: Annotated[
-        str | None,
-        Field(
-            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
-        ),
-    ] = None
-    value: Annotated[
-        float | None,
-        Field(description='Total monetary value of conversions from this action source', ge=0.0),
-    ] = None
+class QuartileData(AdCPBaseModel):
+    q1_views: Annotated[float | None, Field(description='25% completion views', ge=0.0)] = None
+    q2_views: Annotated[float | None, Field(description='50% completion views', ge=0.0)] = None
+    q3_views: Annotated[float | None, Field(description='75% completion views', ge=0.0)] = None
+    q4_views: Annotated[float | None, Field(description='100% completion views', ge=0.0)] = None
 
 
 class VenueBreakdownItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    impressions: Annotated[int, Field(description='Impressions delivered at this venue', ge=0)]
-    loop_plays: Annotated[int | None, Field(description='Loop plays at this venue', ge=0)] = None
-    screens_used: Annotated[
-        int | None, Field(description='Number of screens used at this venue', ge=0)
-    ] = None
     venue_id: Annotated[str, Field(description='Venue identifier')]
     venue_name: Annotated[str | None, Field(description='Human-readable venue name')] = None
     venue_type: Annotated[
         str | None,
         Field(description="Venue type (e.g., 'airport', 'transit', 'retail', 'billboard')"),
     ] = None
+    impressions: Annotated[int, Field(description='Impressions delivered at this venue', ge=0)]
+    loop_plays: Annotated[int | None, Field(description='Loop plays at this venue', ge=0)] = None
+    screens_used: Annotated[
+        int | None, Field(description='Number of screens used at this venue', ge=0)
+    ] = None
 
 
 class DoohMetrics(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    calculation_notes: Annotated[
-        str | None, Field(description='Explanation of how DOOH impressions were calculated')
-    ] = None
     loop_plays: Annotated[
         int | None, Field(description='Number of times ad played in rotation', ge=0)
     ] = None
-    screen_time_seconds: Annotated[
-        int | None, Field(description='Total display time in seconds', ge=0)
-    ] = None
     screens_used: Annotated[
         int | None, Field(description='Number of unique screens displaying the ad', ge=0)
     ] = None
+    screen_time_seconds: Annotated[
+        int | None, Field(description='Total display time in seconds', ge=0)
+    ] = None
     sov_achieved: Annotated[
         float | None,
         Field(description='Actual share of voice delivered (0.0 to 1.0)', ge=0.0, le=1.0),
     ] = None
+    calculation_notes: Annotated[
+        str | None, Field(description='Explanation of how DOOH impressions were calculated')
+    ] = None
     venue_breakdown: Annotated[
         list[VenueBreakdownItem] | None, Field(description='Per-venue performance breakdown')
     ] = None
 
 
-class QuartileData(AdCPBaseModel):
-    q1_views: Annotated[float | None, Field(description='25% completion views', ge=0.0)] = None
-    q2_views: Annotated[float | None, Field(description='50% completion views', ge=0.0)] = None
-    q3_views: Annotated[float | None, Field(description='75% completion views', ge=0.0)] = None
-    q4_views: Annotated[float | None, Field(description='100% completion views', ge=0.0)] = None
+class ByActionSourceItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    action_source: Annotated[
+        action_source_1.ActionSource, Field(description='Where the conversion occurred')
+    ]
+    event_source_id: Annotated[
+        str | None,
+        Field(
+            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
+        ),
+    ] = None
+    count: Annotated[
+        float, Field(description='Number of conversions from this action source', ge=0.0)
+    ]
+    value: Annotated[
+        float | None,
+        Field(description='Total monetary value of conversions from this action source', ge=0.0),
+    ] = None
 
 
-class Standard(Enum):
-    mrc = 'mrc'
-    groupm = 'groupm'
+class ByEventTypeItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_type: Annotated[event_type_1.EventType, Field(description='The event type')]
+    event_source_id: Annotated[
+        str | None,
+        Field(
+            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
+        ),
+    ] = None
+    count: Annotated[float, Field(description='Number of events of this type', ge=0.0)]
+    value: Annotated[
+        float | None, Field(description='Total monetary value of events of this type', ge=0.0)
+    ] = None
 
 
 class Viewability(AdCPBaseModel):
@@ -102,12 +114,6 @@ class Viewability(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    standard: Annotated[
-        Standard | None,
-        Field(
-            description="Viewability measurement standard. 'mrc': 50% of pixels in view for 1 second (display) or 2 seconds (video), per MRC/IAB guidelines. 'groupm': 100% of pixels in view for the same durations. These are materially different thresholds and should not be compared across standards."
-        ),
-    ] = None
     viewable_impressions: Annotated[
         float | None,
         Field(
@@ -123,22 +129,9 @@ class Viewability(AdCPBaseModel):
             le=1.0,
         ),
     ] = None
-
-
-class ByEventTypeItem(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    count: Annotated[float, Field(description='Number of events of this type', ge=0.0)]
-    event_source_id: Annotated[
-        str | None,
-        Field(
-            description='Event source that produced these conversions (for disambiguation when multiple event sources are configured)'
-        ),
-    ] = None
-    event_type: Annotated[event_type_1.EventType, Field(description='The event type')]
-    value: Annotated[
-        float | None, Field(description='Total monetary value of events of this type', ge=0.0)
+    standard: Annotated[
+        viewability_standard.ViewabilityStandard | None,
+        Field(description='Viewability measurement standard applied to these metrics.'),
     ] = None
 
 
@@ -146,19 +139,19 @@ class DeliveryMetrics(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    by_action_source: Annotated[
-        list[ByActionSourceItem] | None,
-        Field(
-            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
-        ),
+    impressions: Annotated[float | None, Field(description='Impressions delivered', ge=0.0)] = None
+    spend: Annotated[float | None, Field(description='Amount spent', ge=0.0)] = None
+    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
+    ctr: Annotated[
+        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
     ] = None
-    by_event_type: Annotated[
-        list[ByEventTypeItem] | None,
+    views: Annotated[
+        float | None,
         Field(
-            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
+            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            ge=0.0,
         ),
     ] = None
-    clicks: Annotated[float | None, Field(description='Total clicks', ge=0.0)] = None
     completed_views: Annotated[
         float | None,
         Field(
@@ -170,124 +163,124 @@ class DeliveryMetrics(AdCPBaseModel):
         float | None,
         Field(description='Completion rate (completed_views/impressions)', ge=0.0, le=1.0),
     ] = None
-    conversion_value: Annotated[
+    conversions: Annotated[
         float | None,
         Field(
-            description='Total monetary value of attributed conversions (in the reporting currency)',
+            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
             ge=0.0,
         ),
     ] = None
-    conversions: Annotated[
+    conversion_value: Annotated[
         float | None,
         Field(
-            description='Total conversions attributed to this delivery. When by_event_type is present, this equals the sum of all by_event_type[].count entries.',
+            description='Total monetary value of attributed conversions (in the reporting currency)',
             ge=0.0,
         ),
     ] = None
+    roas: Annotated[
+        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
+    ] = None
     cost_per_acquisition: Annotated[
         float | None, Field(description='Cost per conversion (spend / conversions)', ge=0.0)
     ] = None
-    cost_per_click: Annotated[
-        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
-    ] = None
-    ctr: Annotated[
-        float | None, Field(description='Click-through rate (clicks/impressions)', ge=0.0, le=1.0)
-    ] = None
-    dooh_metrics: Annotated[
-        DoohMetrics | None,
-        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
-    ] = None
-    engagement_rate: Annotated[
+    new_to_brand_rate: Annotated[
         float | None,
         Field(
-            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
+            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
             ge=0.0,
             le=1.0,
         ),
     ] = None
-    engagements: Annotated[
-        float | None,
-        Field(
-            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
-            ge=0.0,
-        ),
-    ] = None
-    follows: Annotated[
+    leads: Annotated[
         float | None,
         Field(
-            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
             ge=0.0,
         ),
     ] = None
-    frequency: Annotated[
-        float | None,
+    by_event_type: Annotated[
+        list[ByEventTypeItem] | None,
         Field(
-            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
-            ge=0.0,
+            description='Conversion metrics broken down by event type. Spend-derived metrics (ROAS, CPA) are only available at the package/totals level since spend cannot be attributed to individual event types.'
         ),
     ] = None
     grps: Annotated[
         float | None, Field(description='Gross Rating Points delivered (for CPP)', ge=0.0)
     ] = None
-    impressions: Annotated[float | None, Field(description='Impressions delivered', ge=0.0)] = None
-    leads: Annotated[
+    reach: Annotated[
         float | None,
         Field(
-            description="Leads generated (convenience alias for by_event_type where event_type='lead')",
+            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
             ge=0.0,
         ),
     ] = None
-    new_to_brand_rate: Annotated[
-        float | None,
+    reach_unit: Annotated[
+        reach_unit_1.ReachUnit | None,
         Field(
-            description='Fraction of conversions from first-time brand buyers (0 = none, 1 = all)',
-            ge=0.0,
-            le=1.0,
+            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
         ),
     ] = None
-    profile_visits: Annotated[
+    frequency: Annotated[
         float | None,
         Field(
-            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            description="Average frequency per reach unit (typically measured over campaign duration, but can vary by measurement provider). When reach_unit is 'households', this is average exposures per household; when 'accounts', per logged-in account; etc.",
             ge=0.0,
         ),
     ] = None
     quartile_data: Annotated[
         QuartileData | None, Field(description='Audio/video quartile completion data')
     ] = None
-    reach: Annotated[
+    dooh_metrics: Annotated[
+        DoohMetrics | None,
+        Field(description='DOOH-specific metrics (only included for DOOH campaigns)'),
+    ] = None
+    viewability: Annotated[
+        Viewability | None,
+        Field(
+            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+        ),
+    ] = None
+    engagements: Annotated[
         float | None,
         Field(
-            description='Unique reach in the units specified by reach_unit. When reach_unit is omitted, units are unspecified — do not compare reach values across packages or media buys without a common reach_unit.',
+            description="Total engagements — direct interactions with the ad beyond viewing. Includes social reactions/comments/shares, story/unit opens, interactive overlay taps on CTV, companion banner interactions on audio. Platform-specific; corresponds to the 'engagements' optimization metric.",
             ge=0.0,
         ),
     ] = None
-    reach_unit: Annotated[
-        reach_unit_1.ReachUnit | None,
+    follows: Annotated[
+        float | None,
         Field(
-            description='Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison.'
+            description='New followers, page likes, artist/podcast/channel subscribes attributed to this delivery.',
+            ge=0.0,
         ),
     ] = None
-    roas: Annotated[
-        float | None, Field(description='Return on ad spend (conversion_value / spend)', ge=0.0)
-    ] = None
     saves: Annotated[
         float | None,
         Field(
             description='Saves, bookmarks, playlist adds, pins attributed to this delivery.', ge=0.0
         ),
     ] = None
-    spend: Annotated[float | None, Field(description='Amount spent', ge=0.0)] = None
-    viewability: Annotated[
-        Viewability | None,
+    profile_visits: Annotated[
+        float | None,
         Field(
-            description='Viewability metrics. Viewable rate should be calculated as viewable_impressions / measurable_impressions (not total impressions), since some environments cannot measure viewability.'
+            description="Visits to the brand's in-platform page (profile, artist page, channel, or storefront) attributed to this delivery. Does not include external website clicks.",
+            ge=0.0,
         ),
     ] = None
-    views: Annotated[
+    engagement_rate: Annotated[
         float | None,
         Field(
-            description="Content engagements counted toward the billable view threshold. For video this is a platform-defined view event (e.g., 30 seconds or video midpoint); for audio/podcast it is a stream start; for other formats it follows the pricing model's view definition. When the package uses CPV pricing, spend = views × rate.",
+            description='Platform-specific engagement rate (0.0 to 1.0). Typically engagements/impressions, but definition varies by platform.',
             ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    cost_per_click: Annotated[
+        float | None, Field(description='Cost per click (spend / clicks)', ge=0.0)
+    ] = None
+    by_action_source: Annotated[
+        list[ByActionSourceItem] | None,
+        Field(
+            description='Conversion metrics broken down by action source (website, app, in_store, etc.). Useful for omnichannel sellers where conversions occur across digital and physical channels.'
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/deployment.py b/src/adcp/types/generated_poc/core/deployment.py
index c7a919580..75ad39091 100644
--- a/src/adcp/types/generated_poc/core/deployment.py
+++ b/src/adcp/types/generated_poc/core/deployment.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/deployment.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,17 +16,21 @@ class Deployment1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    type: Annotated[
+        Literal['platform'],
+        Field(description='Discriminator indicating this is a platform-based deployment'),
+    ]
+    platform: Annotated[str, Field(description='Platform identifier for DSPs')]
     account: Annotated[str | None, Field(description='Account identifier if applicable')] = None
+    is_live: Annotated[
+        bool, Field(description='Whether signal is currently active on this deployment')
+    ]
     activation_key: Annotated[
         activation_key_1.ActivationKey | None,
         Field(
             description='The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.'
         ),
     ] = None
-    deployed_at: Annotated[
-        AwareDatetime | None,
-        Field(description='Timestamp when activation completed (if is_live=true)'),
-    ] = None
     estimated_activation_duration_minutes: Annotated[
         float | None,
         Field(
@@ -34,32 +38,31 @@ class Deployment1(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    is_live: Annotated[
-        bool, Field(description='Whether signal is currently active on this deployment')
-    ]
-    platform: Annotated[str, Field(description='Platform identifier for DSPs')]
-    type: Annotated[
-        Literal['platform'],
-        Field(description='Discriminator indicating this is a platform-based deployment'),
-    ]
+    deployed_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp when activation completed (if is_live=true)'),
+    ] = None
 
 
 class Deployment2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    type: Annotated[
+        Literal['agent'],
+        Field(description='Discriminator indicating this is an agent URL-based deployment'),
+    ]
+    agent_url: Annotated[AnyUrl, Field(description='URL identifying the deployment agent')]
     account: Annotated[str | None, Field(description='Account identifier if applicable')] = None
+    is_live: Annotated[
+        bool, Field(description='Whether signal is currently active on this deployment')
+    ]
     activation_key: Annotated[
         activation_key_1.ActivationKey | None,
         Field(
             description='The key to use for targeting. Only present if is_live=true AND requester has access to this deployment.'
         ),
     ] = None
-    agent_url: Annotated[AnyUrl, Field(description='URL identifying the deployment agent')]
-    deployed_at: Annotated[
-        AwareDatetime | None,
-        Field(description='Timestamp when activation completed (if is_live=true)'),
-    ] = None
     estimated_activation_duration_minutes: Annotated[
         float | None,
         Field(
@@ -67,13 +70,10 @@ class Deployment2(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    is_live: Annotated[
-        bool, Field(description='Whether signal is currently active on this deployment')
-    ]
-    type: Annotated[
-        Literal['agent'],
-        Field(description='Discriminator indicating this is an agent URL-based deployment'),
-    ]
+    deployed_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp when activation completed (if is_live=true)'),
+    ] = None
 
 
 class Deployment(RootModel[Deployment1 | Deployment2]):
diff --git a/src/adcp/types/generated_poc/core/destination.py b/src/adcp/types/generated_poc/core/destination.py
index ef466859d..d44343c4f 100644
--- a/src/adcp/types/generated_poc/core/destination.py
+++ b/src/adcp/types/generated_poc/core/destination.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/destination.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,33 +14,33 @@ class Destination1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    account: Annotated[
-        str | None, Field(description='Optional account identifier on the platform')
-    ] = None
-    platform: Annotated[
-        str,
-        Field(description="Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')"),
-    ]
     type: Annotated[
         Literal['platform'],
         Field(description='Discriminator indicating this is a platform-based deployment'),
     ]
+    platform: Annotated[
+        str,
+        Field(description="Platform identifier for DSPs (e.g., 'the-trade-desk', 'amazon-dsp')"),
+    ]
+    account: Annotated[
+        str | None, Field(description='Optional account identifier on the platform')
+    ] = None
 
 
 class Destination2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    account: Annotated[
-        str | None, Field(description='Optional account identifier on the agent')
-    ] = None
-    agent_url: Annotated[
-        AnyUrl, Field(description='URL identifying the deployment agent (for sales agents, etc.)')
-    ]
     type: Annotated[
         Literal['agent'],
         Field(description='Discriminator indicating this is an agent URL-based deployment'),
     ]
+    agent_url: Annotated[
+        AnyUrl, Field(description='URL identifying the deployment agent (for sales agents, etc.)')
+    ]
+    account: Annotated[
+        str | None, Field(description='Optional account identifier on the agent')
+    ] = None
 
 
 class Destination(RootModel[Destination1 | Destination2]):
diff --git a/src/adcp/types/generated_poc/core/destination_item.py b/src/adcp/types/generated_poc/core/destination_item.py
index bc2e86903..0c927bf7c 100644
--- a/src/adcp/types/generated_poc/core/destination_item.py
+++ b/src/adcp/types/generated_poc/core/destination_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/destination_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,16 +15,6 @@
 from . import price as price_1
 
 
-class DestinationType(Enum):
-    beach = 'beach'
-    mountain = 'mountain'
-    urban = 'urban'
-    cultural = 'cultural'
-    adventure = 'adventure'
-    wellness = 'wellness'
-    cruise = 'cruise'
-
-
 class Location(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
@@ -37,44 +27,49 @@ class Location(AdCPBaseModel):
     ]
 
 
+class DestinationType(Enum):
+    beach = 'beach'
+    mountain = 'mountain'
+    urban = 'urban'
+    cultural = 'cultural'
+    adventure = 'adventure'
+    wellness = 'wellness'
+    cruise = 'cruise'
+
+
 class DestinationItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
-        Field(
-            description="Typed creative asset pools for this destination. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-            min_length=1,
-        ),
+    destination_id: Annotated[str, Field(description='Unique identifier for this destination.')]
+    name: Annotated[
+        str, Field(description="Destination name (e.g., 'Barcelona', 'Bali', 'Swiss Alps').")
+    ]
+    description: Annotated[
+        str | None,
+        Field(description='Destination description highlighting attractions and appeal.'),
     ] = None
     city: Annotated[str | None, Field(description='City name, if applicable.')] = None
+    region: Annotated[str | None, Field(description='State, province, or region name.')] = None
     country: Annotated[
         str | None, Field(description='ISO 3166-1 alpha-2 country code.', pattern='^[A-Z]{2}$')
     ] = None
-    description: Annotated[
-        str | None,
-        Field(description='Destination description highlighting attractions and appeal.'),
+    location: Annotated[
+        Location | None, Field(description='Geographic coordinates of the destination.')
     ] = None
-    destination_id: Annotated[str, Field(description='Unique identifier for this destination.')]
     destination_type: Annotated[
         DestinationType | None, Field(description='Destination category.')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    image_url: Annotated[AnyUrl | None, Field(description='Destination hero image URL.')] = None
-    location: Annotated[
-        Location | None, Field(description='Geographic coordinates of the destination.')
-    ] = None
-    name: Annotated[
-        str, Field(description="Destination name (e.g., 'Barcelona', 'Bali', 'Swiss Alps').")
-    ]
     price: Annotated[
         price_1.Price | None, Field(description='Starting price for a trip to this destination.')
     ] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Destination hero image URL.')] = None
+    url: Annotated[AnyUrl | None, Field(description='Destination landing page or booking URL.')] = (
+        None
+    )
     rating: Annotated[
         float | None, Field(description='Destination rating (1–5).', ge=1.0, le=5.0)
     ] = None
-    region: Annotated[str | None, Field(description='State, province, or region name.')] = None
     tags: Annotated[
         list[str] | None,
         Field(
@@ -82,6 +77,11 @@ class DestinationItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl | None, Field(description='Destination landing page or booking URL.')] = (
-        None
-    )
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this destination. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+            min_length=1,
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/education_item.py b/src/adcp/types/generated_poc/core/education_item.py
index c2bc269da..6e61ad7c9 100644
--- a/src/adcp/types/generated_poc/core/education_item.py
+++ b/src/adcp/types/generated_poc/core/education_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/education_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -42,59 +42,54 @@ class EducationItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
+    program_id: Annotated[str, Field(description='Unique identifier for this program or course.')]
+    name: Annotated[
+        str,
         Field(
-            description="Typed creative asset pools for this program. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (campus/program hero), 'images_vertical' (9:16 for Stories), 'logo' (institution logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-            min_length=1,
+            description="Program or course name (e.g., 'MSc Computer Science', 'Digital Marketing Certificate')."
         ),
-    ] = None
-    degree_type: Annotated[DegreeType | None, Field(description='Type of credential awarded.')] = (
-        None
-    )
+    ]
+    school: Annotated[str, Field(description='Institution or provider name.')]
     description: Annotated[
         str | None,
         Field(description='Program description including curriculum highlights and outcomes.'),
     ] = None
-    duration: Annotated[
+    subject: Annotated[
         str | None,
         Field(
-            description="Program duration as a human-readable string (e.g., '4 weeks', '2 years', '6 months')."
+            description="Subject area or field of study (e.g., 'computer-science', 'business', 'healthcare')."
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    image_url: Annotated[AnyUrl | None, Field(description='Program or institution image URL.')] = (
+    degree_type: Annotated[DegreeType | None, Field(description='Type of credential awarded.')] = (
         None
     )
-    language: Annotated[
-        str | None, Field(description="Language of instruction (e.g., 'en', 'nl', 'es').")
-    ] = None
     level: Annotated[Level | None, Field(description='Difficulty or prerequisite level.')] = None
-    location: Annotated[
+    price: Annotated[price_1.Price | None, Field(description='Tuition or course fee.')] = None
+    duration: Annotated[
         str | None,
         Field(
-            description="Campus or instruction location (e.g., 'Amsterdam, NL'). Omit for fully online programs."
+            description="Program duration as a human-readable string (e.g., '4 weeks', '2 years', '6 months')."
         ),
     ] = None
-    modality: Annotated[Modality | None, Field(description='Delivery format.')] = None
-    name: Annotated[
-        str,
-        Field(
-            description="Program or course name (e.g., 'MSc Computer Science', 'Digital Marketing Certificate')."
-        ),
-    ]
-    price: Annotated[price_1.Price | None, Field(description='Tuition or course fee.')] = None
-    program_id: Annotated[str, Field(description='Unique identifier for this program or course.')]
-    school: Annotated[str, Field(description='Institution or provider name.')]
     start_date: Annotated[
         date_aliased | None, Field(description='Next available start date (ISO 8601 date).')
     ] = None
-    subject: Annotated[
+    language: Annotated[
+        str | None, Field(description="Language of instruction (e.g., 'en', 'nl', 'es').")
+    ] = None
+    modality: Annotated[Modality | None, Field(description='Delivery format.')] = None
+    location: Annotated[
         str | None,
         Field(
-            description="Subject area or field of study (e.g., 'computer-science', 'business', 'healthcare')."
+            description="Campus or instruction location (e.g., 'Amsterdam, NL'). Omit for fully online programs."
         ),
     ] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Program or institution image URL.')] = (
+        None
+    )
+    url: Annotated[AnyUrl | None, Field(description='Program landing page or enrollment URL.')] = (
+        None
+    )
     tags: Annotated[
         list[str] | None,
         Field(
@@ -102,6 +97,11 @@ class EducationItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl | None, Field(description='Program landing page or enrollment URL.')] = (
-        None
-    )
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this program. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (campus/program hero), 'images_vertical' (9:16 for Stories), 'logo' (institution logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+            min_length=1,
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/event.py b/src/adcp/types/generated_poc/core/event.py
index 70cd6a1a9..38c14b5b2 100644
--- a/src/adcp/types/generated_poc/core/event.py
+++ b/src/adcp/types/generated_poc/core/event.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/event.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,16 +20,6 @@ class Event(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    action_source: Annotated[
-        action_source_1.ActionSource | None, Field(description='Where the event originated')
-    ] = None
-    custom_data: Annotated[
-        event_custom_data.EventCustomData | None,
-        Field(description='Event-specific data (value, currency, items, etc.)'),
-    ] = None
-    custom_event_name: Annotated[
-        str | None, Field(description="Name for custom events (used when event_type is 'custom')")
-    ] = None
     event_id: Annotated[
         str,
         Field(
@@ -38,18 +28,28 @@ class Event(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    event_source_url: Annotated[
-        AnyUrl | None,
-        Field(
-            description="URL where the event occurred (required when action_source is 'website')"
-        ),
-    ] = None
+    event_type: Annotated[event_type_1.EventType, Field(description='Standard event type')]
     event_time: Annotated[
         AwareDatetime, Field(description='ISO 8601 timestamp when the event occurred')
     ]
-    event_type: Annotated[event_type_1.EventType, Field(description='Standard event type')]
-    ext: ext_1.ExtensionObject | None = None
     user_match: Annotated[
         user_match_1.UserMatch | None,
         Field(description='User identifiers for attribution matching'),
     ] = None
+    custom_data: Annotated[
+        event_custom_data.EventCustomData | None,
+        Field(description='Event-specific data (value, currency, items, etc.)'),
+    ] = None
+    action_source: Annotated[
+        action_source_1.ActionSource | None, Field(description='Where the event originated')
+    ] = None
+    event_source_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL where the event occurred (required when action_source is 'website')"
+        ),
+    ] = None
+    custom_event_name: Annotated[
+        str | None, Field(description="Name for custom events (used when event_type is 'custom')")
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/event_custom_data.py b/src/adcp/types/generated_poc/core/event_custom_data.py
index 2fb21b559..93ad472ae 100644
--- a/src/adcp/types/generated_poc/core/event_custom_data.py
+++ b/src/adcp/types/generated_poc/core/event_custom_data.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/event_custom_data.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,47 +16,47 @@ class Content(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    brand: Annotated[str | None, Field(description='Brand name of this item')] = None
     id: Annotated[str, Field(description='Product or content identifier')]
-    price: Annotated[float | None, Field(description='Price per unit of this item', ge=0.0)] = None
     quantity: Annotated[int | None, Field(description='Quantity of this item', ge=1)] = None
+    price: Annotated[float | None, Field(description='Price per unit of this item', ge=0.0)] = None
+    brand: Annotated[str | None, Field(description='Brand name of this item')] = None
 
 
 class EventCustomData(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    content_category: Annotated[
-        str | None, Field(description='Category of the product or content')
+    value: Annotated[
+        float | None,
+        Field(
+            description='Monetary value of the event (should be accompanied by currency)', ge=0.0
+        ),
     ] = None
+    currency: Annotated[
+        str | None, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')
+    ] = None
+    order_id: Annotated[str | None, Field(description='Unique order or transaction identifier')] = (
+        None
+    )
     content_ids: Annotated[
         list[str] | None,
         Field(
             description="Item identifiers for catalog attribution. Values are matched against catalog items using the identifier type declared by the catalog's content_id_type field (e.g., SKUs, GTINs, or vertical-specific IDs like job_id)."
         ),
     ] = None
-    content_name: Annotated[str | None, Field(description='Name of the product or content')] = None
     content_type: Annotated[
         str | None,
         Field(
             description="Category of content associated with the event (e.g., 'product', 'job', 'hotel'). Corresponds to the catalog type when used for catalog attribution."
         ),
     ] = None
-    contents: Annotated[
-        list[Content] | None, Field(description='Per-item details for e-commerce events')
-    ] = None
-    currency: Annotated[
-        str | None, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')
+    content_name: Annotated[str | None, Field(description='Name of the product or content')] = None
+    content_category: Annotated[
+        str | None, Field(description='Category of the product or content')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     num_items: Annotated[int | None, Field(description='Number of items in the event', ge=0)] = None
-    order_id: Annotated[str | None, Field(description='Unique order or transaction identifier')] = (
-        None
-    )
     search_string: Annotated[str | None, Field(description='Search query for search events')] = None
-    value: Annotated[
-        float | None,
-        Field(
-            description='Monetary value of the event (should be accompanied by currency)', ge=0.0
-        ),
+    contents: Annotated[
+        list[Content] | None, Field(description='Per-item details for e-commerce events')
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/event_source_health.py b/src/adcp/types/generated_poc/core/event_source_health.py
index 881d1e589..2c74c8abc 100644
--- a/src/adcp/types/generated_poc/core/event_source_health.py
+++ b/src/adcp/types/generated_poc/core/event_source_health.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/event_source_health.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,15 +17,6 @@ class Detail(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    label: Annotated[
-        str | None,
-        Field(
-            description="Seller's name for this score (e.g., 'Event Quality Score', 'Event Match Quality')."
-        ),
-    ] = None
-    max_score: Annotated[
-        float, Field(description="Maximum possible score on this seller's scale.", ge=1.0)
-    ]
     score: Annotated[
         float,
         Field(
@@ -33,18 +24,47 @@ class Detail(AdCPBaseModel):
             ge=0.0,
         ),
     ]
+    max_score: Annotated[
+        float, Field(description="Maximum possible score on this seller's scale.", ge=1.0)
+    ]
+    label: Annotated[
+        str | None,
+        Field(
+            description="Seller's name for this score (e.g., 'Event Quality Score', 'Event Match Quality')."
+        ),
+    ] = None
 
 
 class EventSourceHealth(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    status: Annotated[
+        assessment_status.AssessmentStatus,
+        Field(
+            description='Overall health status. Use this for cross-seller decisions — do not rely on detail.score for comparability.'
+        ),
+    ]
     detail: Annotated[
         Detail | None,
         Field(
             description='Seller-specific scoring detail. Only present when the seller has a native quality score to relay. Buyer agents should use status (not detail) for cross-seller decisions. Detail is supplementary context for human review or advanced diagnostics.'
         ),
     ] = None
+    match_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of events from this source that the seller successfully matched to ad interactions (0.0-1.0). Low match rates indicate weak user_match identifiers. Absent when the seller does not compute match rates.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    last_event_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp of the most recent event received from this source. Absent when no events have been received.'
+        ),
+    ] = None
     evaluated_at: Annotated[
         AwareDatetime | None,
         Field(
@@ -64,23 +84,3 @@ class EventSourceHealth(AdCPBaseModel):
             description='Actionable issues detected with this event source. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.'
         ),
     ] = None
-    last_event_at: Annotated[
-        AwareDatetime | None,
-        Field(
-            description='ISO 8601 timestamp of the most recent event received from this source. Absent when no events have been received.'
-        ),
-    ] = None
-    match_rate: Annotated[
-        float | None,
-        Field(
-            description='Fraction of events from this source that the seller successfully matched to ad interactions (0.0-1.0). Low match rates indicate weak user_match identifiers. Absent when the seller does not compute match rates.',
-            ge=0.0,
-            le=1.0,
-        ),
-    ] = None
-    status: Annotated[
-        assessment_status.AssessmentStatus,
-        Field(
-            description='Overall health status. Use this for cross-seller decisions — do not rely on detail.score for comparability.'
-        ),
-    ]
diff --git a/src/adcp/types/generated_poc/core/ext.py b/src/adcp/types/generated_poc/core/ext.py
index 976684fbb..1e965a353 100644
--- a/src/adcp/types/generated_poc/core/ext.py
+++ b/src/adcp/types/generated_poc/core/ext.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/ext.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,7 +9,6 @@
 
 
 class ExtensionObject(AdCPBaseModel):
-    pass
     model_config = ConfigDict(
         extra='allow',
     )
diff --git a/src/adcp/types/generated_poc/property/feature_requirement.py b/src/adcp/types/generated_poc/core/feature_requirement.py
similarity index 75%
rename from src/adcp/types/generated_poc/property/feature_requirement.py
rename to src/adcp/types/generated_poc/core/feature_requirement.py
index 15caf57eb..d0e065342 100644
--- a/src/adcp/types/generated_poc/property/feature_requirement.py
+++ b/src/adcp/types/generated_poc/core/feature_requirement.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
-#   filename:  property/feature_requirement.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   filename:  core/feature_requirement.json
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,6 +20,16 @@ class FeatureRequirement(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    feature_id: Annotated[
+        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
+    ]
+    min_value: Annotated[
+        float | None,
+        Field(description='Minimum numeric value required (for quantitative features)'),
+    ] = None
+    max_value: Annotated[
+        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
+    ] = None
     allowed_values: Annotated[
         list[Any] | None,
         Field(
@@ -27,19 +37,15 @@ class FeatureRequirement(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    feature_id: Annotated[
-        str, Field(description='Feature to evaluate (discovered via get_adcp_capabilities)')
-    ]
     if_not_covered: Annotated[
         IfNotCovered | None,
         Field(
             description="How to handle properties where this feature is not covered. 'exclude' (default): property is removed from the list. 'include': property passes this requirement (fail-open)."
         ),
     ] = IfNotCovered.exclude
-    max_value: Annotated[
-        float | None, Field(description='Maximum numeric value allowed (for quantitative features)')
-    ] = None
-    min_value: Annotated[
-        float | None,
-        Field(description='Minimum numeric value required (for quantitative features)'),
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Optional attribution — when this requirement exists to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
+        ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/flight_item.py b/src/adcp/types/generated_poc/core/flight_item.py
index fc2b64a81..4f7cffe0c 100644
--- a/src/adcp/types/generated_poc/core/flight_item.py
+++ b/src/adcp/types/generated_poc/core/flight_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/flight_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,14 +14,6 @@
 from . import price as price_1
 
 
-class Destination(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    airport_code: Annotated[str, Field(description='IATA airport code.', pattern='^[A-Z]{3}$')]
-    city: Annotated[str | None, Field(description='City name.')] = None
-
-
 class Origin(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
@@ -35,39 +27,40 @@ class Origin(AdCPBaseModel):
     )
 
 
+class Destination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    airport_code: Annotated[str, Field(description='IATA airport code.', pattern='^[A-Z]{3}$')]
+    city: Annotated[str | None, Field(description='City name.')] = None
+
+
 class FlightItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    flight_id: Annotated[
+        str, Field(description='Unique identifier for this flight route or offer.')
+    ]
+    origin: Annotated[Origin, Field(description='Departure airport or city.')]
+    destination: Annotated[Destination, Field(description='Arrival airport or city.')]
     airline: Annotated[str | None, Field(description='Airline name or IATA airline code.')] = None
-    arrival_time: Annotated[
-        AwareDatetime | None, Field(description='Arrival date and time (ISO 8601).')
-    ] = None
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
-        Field(
-            description="Typed creative asset pools for this flight. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-            min_length=1,
-        ),
+    price: Annotated[price_1.Price | None, Field(description='Ticket price or starting fare.')] = (
+        None
+    )
+    description: Annotated[
+        str | None, Field(description='Route description or promotional text.')
     ] = None
     departure_time: Annotated[
         AwareDatetime | None, Field(description='Departure date and time (ISO 8601).')
     ] = None
-    description: Annotated[
-        str | None, Field(description='Route description or promotional text.')
+    arrival_time: Annotated[
+        AwareDatetime | None, Field(description='Arrival date and time (ISO 8601).')
     ] = None
-    destination: Annotated[Destination, Field(description='Arrival airport or city.')]
-    ext: ext_1.ExtensionObject | None = None
-    flight_id: Annotated[
-        str, Field(description='Unique identifier for this flight route or offer.')
-    ]
     image_url: Annotated[
         AnyUrl | None, Field(description='Promotional image URL (typically a destination photo).')
     ] = None
-    origin: Annotated[Origin, Field(description='Departure airport or city.')]
-    price: Annotated[price_1.Price | None, Field(description='Ticket price or starting fare.')] = (
-        None
-    )
+    url: Annotated[AnyUrl | None, Field(description='Booking page URL for this route.')] = None
     tags: Annotated[
         list[str] | None,
         Field(
@@ -75,4 +68,11 @@ class FlightItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl | None, Field(description='Booking page URL for this route.')] = None
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this flight. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+            min_length=1,
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/forecast_point.py b/src/adcp/types/generated_poc/core/forecast_point.py
index 038b4dda8..9a37f3ea0 100644
--- a/src/adcp/types/generated_poc/core/forecast_point.py
+++ b/src/adcp/types/generated_poc/core/forecast_point.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/forecast_point.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,24 +14,35 @@
 
 class Metrics(AdCPBaseModel):
     audience_size: forecast_range.ForecastRange | None = None
+    reach: forecast_range.ForecastRange | None = None
+    frequency: forecast_range.ForecastRange | None = None
+    impressions: forecast_range.ForecastRange | None = None
     clicks: forecast_range.ForecastRange | None = None
+    spend: forecast_range.ForecastRange | None = None
+    views: forecast_range.ForecastRange | None = None
     completed_views: forecast_range.ForecastRange | None = None
+    grps: forecast_range.ForecastRange | None = None
     engagements: forecast_range.ForecastRange | None = None
     follows: forecast_range.ForecastRange | None = None
-    frequency: forecast_range.ForecastRange | None = None
-    grps: forecast_range.ForecastRange | None = None
-    impressions: forecast_range.ForecastRange | None = None
-    profile_visits: forecast_range.ForecastRange | None = None
-    reach: forecast_range.ForecastRange | None = None
     saves: forecast_range.ForecastRange | None = None
-    spend: forecast_range.ForecastRange | None = None
-    views: forecast_range.ForecastRange | None = None
+    profile_visits: forecast_range.ForecastRange | None = None
+    measured_impressions: forecast_range.ForecastRange | None = None
+    downloads: forecast_range.ForecastRange | None = None
+    plays: forecast_range.ForecastRange | None = None
 
 
 class ForecastPoint(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    label: Annotated[
+        str | None,
+        Field(
+            description="Human-readable name for this forecast point. Required when forecast_range_unit is 'package' so buyer agents can identify and reference individual packages. Optional for other forecast types.",
+            examples=['Primetime', 'Morning Drive', 'Large Format Transit'],
+            max_length=128,
+        ),
+    ] = None
     budget: Annotated[
         float | None,
         Field(
diff --git a/src/adcp/types/generated_poc/core/forecast_range.py b/src/adcp/types/generated_poc/core/forecast_range.py
index 4dc5fbe01..740c8eb42 100644
--- a/src/adcp/types/generated_poc/core/forecast_range.py
+++ b/src/adcp/types/generated_poc/core/forecast_range.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/forecast_range.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,10 +14,12 @@ class ForecastRange(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    high: Annotated[
-        float | None, Field(description='Optimistic (high-end) forecast value', ge=0.0)
-    ] = None
     low: Annotated[
         float | None, Field(description='Conservative (low-end) forecast value', ge=0.0)
     ] = None
-    mid: Annotated[float, Field(description='Expected (most likely) forecast value', ge=0.0)]
+    mid: Annotated[
+        float | None, Field(description='Expected (most likely) forecast value', ge=0.0)
+    ] = None
+    high: Annotated[
+        float | None, Field(description='Optimistic (high-end) forecast value', ge=0.0)
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/format.py b/src/adcp/types/generated_poc/core/format.py
index 5c005369d..471068051 100644
--- a/src/adcp/types/generated_poc/core/format.py
+++ b/src/adcp/types/generated_poc/core/format.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/format.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,7 +20,7 @@
 )
 from ..enums import wcag_level as wcag_level_1
 from . import format_id as format_id_1
-from . import overlay
+from . import overlay, vendor_pricing_option
 from .requirements import (
     audio_asset_requirements,
     catalog_requirements,
@@ -38,36 +38,15 @@
 )
 
 
-class SelectionMode(Enum):
-    sequential = 'sequential'
-    optimize = 'optimize'
-
-
-class DisclosureCapability(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    persistence: Annotated[
-        list[disclosure_persistence.DisclosurePersistence],
-        Field(description='Persistence modes this position supports', min_length=1),
-    ]
-    position: Annotated[
-        disclosure_position.DisclosurePosition, Field(description='The disclosure position')
-    ]
-
-
 class Responsive(AdCPBaseModel):
-    height: bool
     width: bool
+    height: bool
 
 
 class Dimensions(AdCPBaseModel):
-    aspect_ratio: Annotated[
-        str | None,
-        Field(
-            description="Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
-            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
-        ),
+    width: Annotated[
+        float | None,
+        Field(description='Fixed width. Interpretation depends on unit (default: pixels).', gt=0.0),
     ] = None
     height: Annotated[
         float | None,
@@ -75,20 +54,17 @@ class Dimensions(AdCPBaseModel):
             description='Fixed height. Interpretation depends on unit (default: pixels).', gt=0.0
         ),
     ] = None
-    max_height: Annotated[
-        float | None, Field(description='Maximum height for responsive renders', gt=0.0)
-    ] = None
-    max_width: Annotated[
-        float | None, Field(description='Maximum width for responsive renders', gt=0.0)
+    min_width: Annotated[
+        float | None, Field(description='Minimum width for responsive renders', gt=0.0)
     ] = None
     min_height: Annotated[
         float | None, Field(description='Minimum height for responsive renders', gt=0.0)
     ] = None
-    min_width: Annotated[
-        float | None, Field(description='Minimum width for responsive renders', gt=0.0)
+    max_width: Annotated[
+        float | None, Field(description='Maximum width for responsive renders', gt=0.0)
     ] = None
-    responsive: Annotated[
-        Responsive | None, Field(description='Indicates which dimensions are responsive/fluid')
+    max_height: Annotated[
+        float | None, Field(description='Maximum height for responsive renders', gt=0.0)
     ] = None
     unit: Annotated[
         dimension_unit.DimensionUnit | None,
@@ -96,17 +72,23 @@ class Dimensions(AdCPBaseModel):
             description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
         ),
     ] = None
-    width: Annotated[
-        float | None,
-        Field(description='Fixed width. Interpretation depends on unit (default: pixels).', gt=0.0),
+    responsive: Annotated[
+        Responsive | None, Field(description='Indicates which dimensions are responsive/fluid')
+    ] = None
+    aspect_ratio: Annotated[
+        str | None,
+        Field(
+            description="Fixed aspect ratio constraint (e.g., '16:9', '4:3', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+        ),
     ] = None
 
 
 class Renders(AdCPBaseModel):
-    dimensions: Annotated[
-        Dimensions,
+    role: Annotated[
+        str,
         Field(
-            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
+            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
         ),
     ]
     parameters_from_format_id: Annotated[
@@ -115,50 +97,54 @@ class Renders(AdCPBaseModel):
             description='When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly.'
         ),
     ] = None
-    role: Annotated[
-        str,
+    dimensions: Annotated[
+        Dimensions,
         Field(
-            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
         ),
     ]
 
 
-Dimensions1 = Dimensions
+class Dimensions7(Dimensions):
+    pass
 
 
-class Renders1(AdCPBaseModel):
-    dimensions: Annotated[
-        Dimensions1 | None,
+class Renders7(AdCPBaseModel):
+    role: Annotated[
+        str,
         Field(
-            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
+            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
         ),
-    ] = None
+    ]
     parameters_from_format_id: Annotated[
         Literal[True],
         Field(
             description='When true, parameters for this render (dimensions and/or duration) are specified in the format_id. Used for template formats that accept parameters. Mutually exclusive with specifying dimensions object explicitly.'
         ),
     ]
-    role: Annotated[
-        str,
+    dimensions: Annotated[
+        Dimensions7 | None,
         Field(
-            description="Semantic role of this rendered piece (e.g., 'primary', 'companion', 'mobile_variant')"
+            description='Dimensions for this rendered piece. Defaults to pixels when unit is absent.'
         ),
-    ]
+    ] = None
 
 
-class Accessibility(AdCPBaseModel):
-    requires_accessible_assets: Annotated[
-        bool | None,
-        Field(
-            description='When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties.'
-        ),
-    ] = None
-    wcag_level: Annotated[
-        wcag_level_1.WcagLevel,
-        Field(
-            description='WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level.'
-        ),
+class SelectionMode(Enum):
+    sequential = 'sequential'
+    optimize = 'optimize'
+
+
+class DisclosureCapability(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    position: Annotated[
+        disclosure_position.DisclosurePosition, Field(description='The disclosure position')
+    ]
+    persistence: Annotated[
+        list[disclosure_persistence.DisclosurePersistence],
+        Field(description='Persistence modes this position supports', min_length=1),
     ]
 
 
@@ -178,6 +164,21 @@ class FormatCard(AdCPBaseModel):
     ]
 
 
+class Accessibility(AdCPBaseModel):
+    wcag_level: Annotated[
+        wcag_level_1.WcagLevel,
+        Field(
+            description='WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level.'
+        ),
+    ]
+    requires_accessible_assets: Annotated[
+        bool | None,
+        Field(
+            description='When true, all assets with x-accessibility fields must include those fields. For inspectable assets (image, video, audio), this means providing accessibility metadata like alt_text or captions. For opaque assets (HTML, JavaScript), this means providing self-declared accessibility properties.'
+        ),
+    ] = None
+
+
 class FormatCardDetailed(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
@@ -196,27 +197,11 @@ class FormatCardDetailed(AdCPBaseModel):
     ]
 
 
-class BaseGroupAsset(AdCPBaseModel):
-    asset_id: Annotated[str, Field(description='Identifier for this asset within the group')]
-    asset_role: Annotated[
-        str | None,
-        Field(
-            description="Descriptive label for this asset's purpose. For documentation and UI display only — manifests key assets by asset_id, not asset_role."
-        ),
-    ] = None
-    overlays: Annotated[
-        list[overlay.Overlay] | None,
-        Field(
-            description="Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., carousel navigation arrows, slide indicators). Creative agents should avoid placing critical content within overlay bounds."
-        ),
-    ] = None
-    required: Annotated[
-        bool,
-        Field(description='Whether this asset is required within each repetition of the group'),
-    ]
-
-
 class BaseIndividualAsset(AdCPBaseModel):
+    item_type: Annotated[
+        Literal['individual'],
+        Field(description='Discriminator indicating this is an individual asset'),
+    ]
     asset_id: Annotated[
         str,
         Field(
@@ -229,9 +214,11 @@ class BaseIndividualAsset(AdCPBaseModel):
             description="Descriptive label for this asset's purpose (e.g., 'hero_image', 'logo', 'third_party_tracking'). For documentation and UI display only — manifests key assets by asset_id, not asset_role."
         ),
     ] = None
-    item_type: Annotated[
-        Literal['individual'],
-        Field(description='Discriminator indicating this is an individual asset'),
+    required: Annotated[
+        bool,
+        Field(
+            description='Whether this asset is required (true) or optional (false). Required assets must be provided for a valid creative. Optional assets enhance the creative but are not mandatory.'
+        ),
     ]
     overlays: Annotated[
         list[overlay.Overlay] | None,
@@ -239,189 +226,178 @@ class BaseIndividualAsset(AdCPBaseModel):
             description="Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., video player controls, publisher logos). Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds."
         ),
     ] = None
+
+
+class BaseGroupAsset(AdCPBaseModel):
+    asset_id: Annotated[str, Field(description='Identifier for this asset within the group')]
+    asset_role: Annotated[
+        str | None,
+        Field(
+            description="Descriptive label for this asset's purpose. For documentation and UI display only — manifests key assets by asset_id, not asset_role."
+        ),
+    ] = None
     required: Annotated[
         bool,
+        Field(description='Whether this asset is required within each repetition of the group'),
+    ]
+    overlays: Annotated[
+        list[overlay.Overlay] | None,
         Field(
-            description='Whether this asset is required (true) or optional (false). Required assets must be provided for a valid creative. Optional assets enhance the creative but are not mandatory.'
+            description="Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., carousel navigation arrows, slide indicators). Creative agents should avoid placing critical content within overlay bounds."
         ),
-    ]
+    ] = None
 
 
 class Assets(BaseIndividualAsset):
-    asset_type: Literal['image'] = 'image'
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['image'] = 'image'
     requirements: image_asset_requirements.ImageAssetRequirements | None = None
 
 
-class Assets5(BaseIndividualAsset):
-    asset_type: Literal['video'] = 'video'
+class Assets81(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['video'] = 'video'
     requirements: video_asset_requirements.VideoAssetRequirements | None = None
 
 
-class Assets6(BaseIndividualAsset):
-    asset_type: Literal['audio'] = 'audio'
+class Assets82(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['audio'] = 'audio'
     requirements: audio_asset_requirements.AudioAssetRequirements | None = None
 
 
-class Assets7(BaseIndividualAsset):
-    asset_type: Literal['text'] = 'text'
+class Assets83(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['text'] = 'text'
     requirements: text_asset_requirements.TextAssetRequirements | None = None
 
 
-class Assets8(BaseIndividualAsset):
-    asset_type: Literal['markdown'] = 'markdown'
+class Assets84(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['markdown'] = 'markdown'
     requirements: markdown_asset_requirements.MarkdownAssetRequirements | None = None
 
 
-class Assets9(BaseIndividualAsset):
-    asset_type: Literal['html'] = 'html'
+class Assets85(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['html'] = 'html'
     requirements: html_asset_requirements.HtmlAssetRequirements | None = None
 
 
-class Assets10(BaseIndividualAsset):
-    asset_type: Literal['css'] = 'css'
+class Assets86(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['css'] = 'css'
     requirements: css_asset_requirements.CssAssetRequirements | None = None
 
 
-class Assets11(BaseIndividualAsset):
-    asset_type: Literal['javascript'] = 'javascript'
+class Assets87(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['javascript'] = 'javascript'
     requirements: javascript_asset_requirements.JavascriptAssetRequirements | None = None
 
 
-class Assets12(BaseIndividualAsset):
-    asset_type: Literal['vast'] = 'vast'
+class Assets88(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['vast'] = 'vast'
     requirements: vast_asset_requirements.VastAssetRequirements | None = None
 
 
-class Assets13(BaseIndividualAsset):
-    asset_type: Literal['daast'] = 'daast'
+class Assets89(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['daast'] = 'daast'
     requirements: daast_asset_requirements.DaastAssetRequirements | None = None
 
 
-class Assets14(BaseIndividualAsset):
-    asset_type: Literal['url'] = 'url'
+class Assets90(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['url'] = 'url'
     requirements: url_asset_requirements.UrlAssetRequirements | None = None
 
 
-class Assets15(BaseIndividualAsset):
-    asset_type: Literal['webhook'] = 'webhook'
+class Assets91(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['webhook'] = 'webhook'
     requirements: webhook_asset_requirements.WebhookAssetRequirements | None = None
 
 
-class Assets16(BaseIndividualAsset):
-    asset_type: Literal['brief'] = 'brief'
+class Assets92(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['brief'] = 'brief'
 
 
-class Assets17(BaseIndividualAsset):
-    asset_type: Literal['catalog'] = 'catalog'
+class Assets93(BaseIndividualAsset):
     item_type: Literal['individual'] = 'individual'
+    asset_type: Literal['catalog'] = 'catalog'
     requirements: catalog_requirements.CatalogRequirements | None = None
 
 
-class Assets19(BaseGroupAsset):
+class Assets95(BaseGroupAsset):
     asset_type: Literal['image'] = 'image'
     requirements: image_asset_requirements.ImageAssetRequirements | None = None
 
 
-class Assets20(BaseGroupAsset):
+class Assets96(BaseGroupAsset):
     asset_type: Literal['video'] = 'video'
     requirements: video_asset_requirements.VideoAssetRequirements | None = None
 
 
-class Assets21(BaseGroupAsset):
+class Assets97(BaseGroupAsset):
     asset_type: Literal['audio'] = 'audio'
     requirements: audio_asset_requirements.AudioAssetRequirements | None = None
 
 
-class Assets22(BaseGroupAsset):
+class Assets98(BaseGroupAsset):
     asset_type: Literal['text'] = 'text'
     requirements: text_asset_requirements.TextAssetRequirements | None = None
 
 
-class Assets23(BaseGroupAsset):
+class Assets99(BaseGroupAsset):
     asset_type: Literal['markdown'] = 'markdown'
     requirements: markdown_asset_requirements.MarkdownAssetRequirements | None = None
 
 
-class Assets24(BaseGroupAsset):
+class Assets100(BaseGroupAsset):
     asset_type: Literal['html'] = 'html'
     requirements: html_asset_requirements.HtmlAssetRequirements | None = None
 
 
-class Assets25(BaseGroupAsset):
+class Assets101(BaseGroupAsset):
     asset_type: Literal['css'] = 'css'
     requirements: css_asset_requirements.CssAssetRequirements | None = None
 
 
-class Assets26(BaseGroupAsset):
+class Assets102(BaseGroupAsset):
     asset_type: Literal['javascript'] = 'javascript'
     requirements: javascript_asset_requirements.JavascriptAssetRequirements | None = None
 
 
-class Assets27(BaseGroupAsset):
+class Assets103(BaseGroupAsset):
     asset_type: Literal['vast'] = 'vast'
     requirements: vast_asset_requirements.VastAssetRequirements | None = None
 
 
-class Assets28(BaseGroupAsset):
+class Assets104(BaseGroupAsset):
     asset_type: Literal['daast'] = 'daast'
     requirements: daast_asset_requirements.DaastAssetRequirements | None = None
 
 
-class Assets29(BaseGroupAsset):
+class Assets105(BaseGroupAsset):
     asset_type: Literal['url'] = 'url'
     requirements: url_asset_requirements.UrlAssetRequirements | None = None
 
 
-class Assets30(BaseGroupAsset):
+class Assets106(BaseGroupAsset):
     asset_type: Literal['webhook'] = 'webhook'
     requirements: webhook_asset_requirements.WebhookAssetRequirements | None = None
 
 
-class Assets18(AdCPBaseModel):
-    asset_group_id: Annotated[
-        str, Field(description="Identifier for this asset group (e.g., 'product', 'slide', 'card')")
-    ]
-    assets: Annotated[
-        list[
-            Assets19
-            | Assets20
-            | Assets21
-            | Assets22
-            | Assets23
-            | Assets24
-            | Assets25
-            | Assets26
-            | Assets27
-            | Assets28
-            | Assets29
-            | Assets30
-        ],
-        Field(description='Assets within each repetition of this group'),
-    ]
+class Assets94(AdCPBaseModel):
     item_type: Annotated[
         Literal['repeatable_group'],
         Field(description='Discriminator indicating this is a repeatable asset group'),
     ]
-    max_count: Annotated[int, Field(description='Maximum number of repetitions allowed', ge=1)]
-    min_count: Annotated[
-        int,
-        Field(
-            description='Minimum number of repetitions required (if group is required) or allowed (if optional)',
-            ge=0,
-        ),
+    asset_group_id: Annotated[
+        str, Field(description="Identifier for this asset group (e.g., 'product', 'slide', 'card')")
     ]
     required: Annotated[
         bool,
@@ -429,47 +405,90 @@ class Assets18(AdCPBaseModel):
             description='Whether this asset group is required. If true, at least min_count repetitions must be provided.'
         ),
     ]
+    min_count: Annotated[
+        int,
+        Field(
+            description='Minimum number of repetitions required (if group is required) or allowed (if optional)',
+            ge=0,
+        ),
+    ]
+    max_count: Annotated[int, Field(description='Maximum number of repetitions allowed', ge=1)]
     selection_mode: Annotated[
         SelectionMode | None,
         Field(
             description="How the platform uses repetitions of this group. 'sequential' means all items display in order (carousels, playlists). 'optimize' means the platform selects the best-performing combination from alternatives (asset group optimization like Meta Advantage+ or Google Pmax)."
         ),
     ] = SelectionMode.sequential
+    assets: Annotated[
+        list[
+            Assets95
+            | Assets96
+            | Assets97
+            | Assets98
+            | Assets99
+            | Assets100
+            | Assets101
+            | Assets102
+            | Assets103
+            | Assets104
+            | Assets105
+            | Assets106
+        ],
+        Field(description='Assets within each repetition of this group'),
+    ]
 
 
 class Format(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    format_id: Annotated[
+        format_id_1.FormatId,
+        Field(description='Structured format identifier with agent URL and format name'),
+    ]
+    name: Annotated[str, Field(description='Human-readable format name')]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Plain text explanation of what this format does and what assets it requires'
+        ),
+    ] = None
+    example_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL to showcase page with examples and interactive demos of this format'
+        ),
+    ] = None
     accepts_parameters: Annotated[
         list[format_id_parameter.FormatIdParameter] | None,
         Field(
             description='List of parameters this format accepts in format_id. Template formats define which parameters (dimensions, duration, etc.) can be specified when instantiating the format. Empty or omitted means this is a concrete format with fixed parameters.'
         ),
     ] = None
-    accessibility: Annotated[
-        Accessibility | None,
+    renders: Annotated[
+        list[Renders | Renders7] | None,
         Field(
-            description='Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.'
+            description='Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.',
+            min_length=1,
         ),
     ] = None
     assets: Annotated[
         list[
             Assets
-            | Assets5
-            | Assets6
-            | Assets7
-            | Assets8
-            | Assets9
-            | Assets10
-            | Assets11
-            | Assets12
-            | Assets13
-            | Assets14
-            | Assets15
-            | Assets16
-            | Assets17
-            | Assets18
+            | Assets81
+            | Assets82
+            | Assets83
+            | Assets84
+            | Assets85
+            | Assets86
+            | Assets87
+            | Assets88
+            | Assets89
+            | Assets90
+            | Assets91
+            | Assets92
+            | Assets93
+            | Assets94
         ]
         | None,
         Field(
@@ -480,23 +499,22 @@ class Format(AdCPBaseModel):
         dict[str, Any] | None,
         Field(description='Delivery method specifications (e.g., hosted, VAST, third-party tags)'),
     ] = None
-    description: Annotated[
-        str | None,
+    supported_macros: Annotated[
+        list[universal_macro.UniversalMacro | str] | None,
         Field(
-            description='Plain text explanation of what this format does and what assets it requires'
+            description='List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.'
         ),
     ] = None
-    disclosure_capabilities: Annotated[
-        list[DisclosureCapability] | None,
+    input_format_ids: Annotated[
+        list[format_id_1.FormatId] | None,
         Field(
-            description='Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.',
-            min_length=1,
+            description='Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.'
         ),
     ] = None
-    example_url: Annotated[
-        AnyUrl | None,
+    output_format_ids: Annotated[
+        list[format_id_1.FormatId] | None,
         Field(
-            description='Optional URL to showcase page with examples and interactive demos of this format'
+            description='Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).'
         ),
     ] = None
     format_card: Annotated[
@@ -505,34 +523,30 @@ class Format(AdCPBaseModel):
             description='Optional standard visual card (300x400px) for displaying this format in user interfaces. Can be rendered via preview_creative or pre-generated.'
         ),
     ] = None
-    format_card_detailed: Annotated[
-        FormatCardDetailed | None,
+    accessibility: Annotated[
+        Accessibility | None,
         Field(
-            description='Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.'
+            description='Accessibility posture of this format. Declares the WCAG conformance level that creatives produced by this format will meet.'
         ),
     ] = None
-    format_id: Annotated[
-        format_id_1.FormatId,
-        Field(description='Structured format identifier with agent URL and format name'),
-    ]
-    input_format_ids: Annotated[
-        list[format_id_1.FormatId] | None,
+    supported_disclosure_positions: Annotated[
+        list[disclosure_position.DisclosurePosition] | None,
         Field(
-            description='Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.'
+            description='Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees — creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.',
+            min_length=1,
         ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable format name')]
-    output_format_ids: Annotated[
-        list[format_id_1.FormatId] | None,
+    disclosure_capabilities: Annotated[
+        list[DisclosureCapability] | None,
         Field(
-            description='Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).'
+            description='Structured disclosure capabilities per position with persistence modes. Declares which persistence behaviors each disclosure position supports, enabling persistence-aware matching against provenance render guidance and brief requirements. When present, supersedes supported_disclosure_positions for persistence-aware queries. The flat supported_disclosure_positions field is retained for backward compatibility. Each position MUST appear at most once; validators and agents SHOULD reject duplicates.',
+            min_length=1,
         ),
     ] = None
-    renders: Annotated[
-        list[Renders | Renders1] | None,
+    format_card_detailed: Annotated[
+        FormatCardDetailed | None,
         Field(
-            description='Specification of rendered pieces for this format. Most formats produce a single render. Companion ad formats (video + banner), adaptive formats, and multi-placement formats produce multiple renders. Each render specifies its role and dimensions.',
-            min_length=1,
+            description='Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.'
         ),
     ] = None
     reported_metrics: Annotated[
@@ -542,16 +556,10 @@ class Format(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    supported_disclosure_positions: Annotated[
-        list[disclosure_position.DisclosurePosition] | None,
+    pricing_options: Annotated[
+        list[vendor_pricing_option.VendorPricingOption] | None,
         Field(
-            description='Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees — creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.',
+            description='Pricing options for this format. Used by transformation and generation agents that charge per format adapted, per image generated, or per unit of work. Present when the request included include_pricing=true and account. Ad servers and library-based agents expose pricing on list_creatives instead.',
             min_length=1,
         ),
     ] = None
-    supported_macros: Annotated[
-        list[universal_macro.UniversalMacro | str] | None,
-        Field(
-            description='List of universal macros supported by this format (e.g., MEDIA_BUY_ID, CACHEBUSTER, DEVICE_ID). Used for validation and developer tooling. See docs/creative/universal-macros.mdx for full documentation.'
-        ),
-    ] = None
diff --git a/src/adcp/types/generated_poc/core/format_id.py b/src/adcp/types/generated_poc/core/format_id.py
index 2597c2cbb..d1a66704d 100644
--- a/src/adcp/types/generated_poc/core/format_id.py
+++ b/src/adcp/types/generated_poc/core/format_id.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/format_id.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,20 +20,6 @@ class FormatId(AdCPBaseModel):
             description="URL of the agent that defines this format (e.g., 'https://creatives.adcontextprotocol.org' for standard formats, or 'https://publisher.com/.well-known/adcp/sales' for custom formats)"
         ),
     ]
-    duration_ms: Annotated[
-        float | None,
-        Field(
-            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
-            ge=1.0,
-        ),
-    ] = None
-    height: Annotated[
-        int | None,
-        Field(
-            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
-            ge=1,
-        ),
-    ] = None
     id: Annotated[
         str,
         Field(
@@ -48,3 +34,17 @@ class FormatId(AdCPBaseModel):
             ge=1,
         ),
     ] = None
+    height: Annotated[
+        int | None,
+        Field(
+            description='Height in pixels for visual formats. When specified, width must also be specified. Both fields together create a parameterized format ID for dimension-specific variants.',
+            ge=1,
+        ),
+    ] = None
+    duration_ms: Annotated[
+        float | None,
+        Field(
+            description='Duration in milliseconds for time-based formats (video, audio). When specified, creates a parameterized format ID. Omit to reference a template format without parameters.',
+            ge=1.0,
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/frequency_cap.py b/src/adcp/types/generated_poc/core/frequency_cap.py
index b9ef4cff5..9d5dc0984 100644
--- a/src/adcp/types/generated_poc/core/frequency_cap.py
+++ b/src/adcp/types/generated_poc/core/frequency_cap.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/frequency_cap.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,19 +17,6 @@ class FrequencyCap(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    max_impressions: Annotated[
-        int | None,
-        Field(
-            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
-            ge=1,
-        ),
-    ] = None
-    per: Annotated[
-        reach_unit.ReachUnit | None,
-        Field(
-            description='Entity granularity for impression counting. Required when max_impressions is set.'
-        ),
-    ] = None
     suppress: Annotated[
         duration.Duration | None,
         Field(
@@ -43,6 +30,19 @@ class FrequencyCap(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
+    max_impressions: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of impressions per entity per window. For duration windows, implementations typically use a rolling window; 'campaign' applies a fixed cap across the full flight.",
+            ge=1,
+        ),
+    ] = None
+    per: Annotated[
+        reach_unit.ReachUnit | None,
+        Field(
+            description='Entity granularity for impression counting. Required when max_impressions is set.'
+        ),
+    ] = None
     window: Annotated[
         duration.Duration | None,
         Field(
diff --git a/src/adcp/types/generated_poc/core/generation_credential.py b/src/adcp/types/generated_poc/core/generation_credential.py
index a9995fb0d..1c41a27b7 100644
--- a/src/adcp/types/generated_poc/core/generation_credential.py
+++ b/src/adcp/types/generated_poc/core/generation_credential.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/generation_credential.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T20:45:21+00:00
 
 from __future__ import annotations
 
@@ -17,19 +17,6 @@ class GenerationCredential(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    endpoint: Annotated[
-        AnyUrl | None,
-        Field(
-            description="Provider API endpoint to use with this credential, if different from the provider's default"
-        ),
-    ] = None
-    expires_at: Annotated[
-        AwareDatetime | None,
-        Field(
-            description='When this credential expires. Key lifetime is determined by the provider.'
-        ),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     provider: Annotated[
         str,
         Field(
@@ -46,3 +33,16 @@ class GenerationCredential(AdCPBaseModel):
         list[right_use.RightUse],
         Field(description='Which rights uses this credential covers', min_length=1),
     ]
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this credential expires. Key lifetime is determined by the provider.'
+        ),
+    ] = None
+    endpoint: Annotated[
+        AnyUrl | None,
+        Field(
+            description="Provider API endpoint to use with this credential, if different from the provider's default"
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/geo_breakdown_support.py b/src/adcp/types/generated_poc/core/geo_breakdown_support.py
index fb0341db8..6e68d53de 100644
--- a/src/adcp/types/generated_poc/core/geo_breakdown_support.py
+++ b/src/adcp/types/generated_poc/core/geo_breakdown_support.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/geo_breakdown_support.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,8 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..enums import metro_system, postal_system
+
 
 class GeographicBreakdownSupport(AdCPBaseModel):
     model_config = ConfigDict(
@@ -17,18 +19,18 @@ class GeographicBreakdownSupport(AdCPBaseModel):
     country: Annotated[
         bool | None, Field(description='Supports country-level geo breakdown (ISO 3166-1 alpha-2)')
     ] = None
+    region: Annotated[
+        bool | None, Field(description='Supports region/state-level geo breakdown (ISO 3166-2)')
+    ] = None
     metro: Annotated[
-        dict[str, bool] | None,
+        dict[metro_system.MetroAreaSystem, bool] | None,
         Field(
             description='Metro area breakdown support. Keys are metro-system enum values; true means supported.'
         ),
     ] = None
     postal_area: Annotated[
-        dict[str, bool] | None,
+        dict[postal_system.PostalCodeSystem, bool] | None,
         Field(
             description='Postal area breakdown support. Keys are postal-system enum values; true means supported.'
         ),
     ] = None
-    region: Annotated[
-        bool | None, Field(description='Supports region/state-level geo breakdown (ISO 3166-2)')
-    ] = None
diff --git a/src/adcp/types/generated_poc/core/hotel_item.py b/src/adcp/types/generated_poc/core/hotel_item.py
index d73ab1a17..c1c2fac34 100644
--- a/src/adcp/types/generated_poc/core/hotel_item.py
+++ b/src/adcp/types/generated_poc/core/hotel_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/hotel_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,19 +15,6 @@
 from . import price as price_1
 
 
-class Address(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    city: Annotated[str | None, Field(description='City name.')] = None
-    country: Annotated[
-        str | None, Field(description='ISO 3166-1 alpha-2 country code.', pattern='^[A-Z]{2}$')
-    ] = None
-    postal_code: Annotated[str | None, Field(description='Postal or ZIP code.')] = None
-    region: Annotated[str | None, Field(description='State, province, or region.')] = None
-    street: Annotated[str | None, Field(description='Street address.')] = None
-
-
 class Location(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
@@ -40,13 +27,50 @@ class Location(AdCPBaseModel):
     ]
 
 
+class Address(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    street: Annotated[str | None, Field(description='Street address.')] = None
+    city: Annotated[str | None, Field(description='City name.')] = None
+    region: Annotated[str | None, Field(description='State, province, or region.')] = None
+    postal_code: Annotated[str | None, Field(description='Postal or ZIP code.')] = None
+    country: Annotated[
+        str | None, Field(description='ISO 3166-1 alpha-2 country code.', pattern='^[A-Z]{2}$')
+    ] = None
+
+
 class HotelItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    hotel_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this property. Used to match remarketing events and inventory feeds to the correct hotel.'
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(description="Property name (e.g., 'Grand Hotel Amsterdam', 'Seaside Resort & Spa')."),
+    ]
+    description: Annotated[
+        str | None, Field(description='Property description highlighting features and location.')
+    ] = None
+    location: Annotated[Location, Field(description='Geographic coordinates of the property.')]
     address: Annotated[
         Address | None, Field(description='Structured address for display and geocoding.')
     ] = None
+    star_rating: Annotated[
+        int | None, Field(description='Official star rating (1–5).', ge=1, le=5)
+    ] = None
+    price: Annotated[
+        price_1.Price | None,
+        Field(description="Nightly rate or starting price. Use period 'night' for nightly rates."),
+    ] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Primary property image URL.')] = None
+    url: Annotated[AnyUrl | None, Field(description='Property landing page or booking URL.')] = None
+    phone: Annotated[str | None, Field(description='Property phone number in E.164 format.')] = None
     amenities: Annotated[
         list[str] | None,
         Field(
@@ -54,13 +78,6 @@ class HotelItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
-        Field(
-            description="Typed creative asset pools for this hotel. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (16:9 hero images), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1), 'logo'. Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-            min_length=1,
-        ),
-    ] = None
     check_in_time: Annotated[
         str | None,
         Field(
@@ -75,30 +92,6 @@ class HotelItem(AdCPBaseModel):
             pattern='^[0-2][0-9]:[0-5][0-9]$',
         ),
     ] = None
-    description: Annotated[
-        str | None, Field(description='Property description highlighting features and location.')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    hotel_id: Annotated[
-        str,
-        Field(
-            description='Unique identifier for this property. Used to match remarketing events and inventory feeds to the correct hotel.'
-        ),
-    ]
-    image_url: Annotated[AnyUrl | None, Field(description='Primary property image URL.')] = None
-    location: Annotated[Location, Field(description='Geographic coordinates of the property.')]
-    name: Annotated[
-        str,
-        Field(description="Property name (e.g., 'Grand Hotel Amsterdam', 'Seaside Resort & Spa')."),
-    ]
-    phone: Annotated[str | None, Field(description='Property phone number in E.164 format.')] = None
-    price: Annotated[
-        price_1.Price | None,
-        Field(description="Nightly rate or starting price. Use period 'night' for nightly rates."),
-    ] = None
-    star_rating: Annotated[
-        int | None, Field(description='Official star rating (1–5).', ge=1, le=5)
-    ] = None
     tags: Annotated[
         list[str] | None,
         Field(
@@ -106,7 +99,6 @@ class HotelItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[AnyUrl | None, Field(description='Property landing page or booking URL.')] = None
     valid_from: Annotated[
         date_aliased | None,
         Field(
@@ -119,3 +111,11 @@ class HotelItem(AdCPBaseModel):
             description="Date until which this item is available or this rate applies (ISO 8601, e.g., '2025-09-30'). Used for seasonal availability windows in feed imports."
         ),
     ] = None
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this hotel. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (16:9 hero images), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1), 'logo'. Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+            min_length=1,
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/industry_identifier.py b/src/adcp/types/generated_poc/core/industry_identifier.py
new file mode 100644
index 000000000..82ffd7058
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/industry_identifier.py
@@ -0,0 +1,23 @@
+# generated by datamodel-codegen:
+#   filename:  core/industry_identifier.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..enums import creative_identifier_type
+
+
+class IndustryIdentifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: creative_identifier_type.CreativeIdentifierType
+    value: Annotated[
+        str,
+        Field(description="The identifier value (e.g., 'ABCD1234000H' for Ad-ID)", max_length=64),
+    ]
diff --git a/src/adcp/types/generated_poc/core/insertion_order.py b/src/adcp/types/generated_poc/core/insertion_order.py
index 1a3a00abc..855c98e84 100644
--- a/src/adcp/types/generated_poc/core/insertion_order.py
+++ b/src/adcp/types/generated_poc/core/insertion_order.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/insertion_order.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,6 +11,13 @@
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
 
+class TotalBudget(AdCPBaseModel):
+    amount: Annotated[float, Field(ge=0.0)]
+    currency: Annotated[
+        str, Field(description='ISO 4217 currency code', max_length=3, min_length=3)
+    ]
+
+
 class PaymentTerms(Enum):
     net_30 = 'net_30'
     net_60 = 'net_60'
@@ -19,13 +26,6 @@ class PaymentTerms(Enum):
     due_on_receipt = 'due_on_receipt'
 
 
-class TotalBudget(AdCPBaseModel):
-    amount: Annotated[float, Field(ge=0.0)]
-    currency: Annotated[
-        str, Field(description='ISO 4217 currency code', max_length=3, min_length=3)
-    ]
-
-
 class Terms(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
@@ -33,13 +33,13 @@ class Terms(AdCPBaseModel):
     advertiser: Annotated[
         str | None, Field(description='Advertiser name or identifier', max_length=500)
     ] = None
-    flight_end: Annotated[AwareDatetime | None, Field(description='Campaign end date')] = None
-    flight_start: Annotated[AwareDatetime | None, Field(description='Campaign start date')] = None
-    payment_terms: Annotated[PaymentTerms | None, Field(description='Payment terms')] = None
     publisher: Annotated[
         str | None, Field(description='Publisher name or identifier', max_length=500)
     ] = None
     total_budget: Annotated[TotalBudget | None, Field(description='Total committed budget')] = None
+    flight_start: Annotated[AwareDatetime | None, Field(description='Campaign start date')] = None
+    flight_end: Annotated[AwareDatetime | None, Field(description='Campaign end date')] = None
+    payment_terms: Annotated[PaymentTerms | None, Field(description='Payment terms')] = None
 
 
 class InsertionOrder(AdCPBaseModel):
@@ -53,22 +53,10 @@ class InsertionOrder(AdCPBaseModel):
             max_length=255,
         ),
     ]
-    requires_signature: Annotated[
-        bool,
-        Field(
-            description='Whether the buyer must accept this IO before creating a media buy. When true, create_media_buy requires an io_acceptance referencing this io_id.'
-        ),
-    ]
-    signing_url: Annotated[
-        AnyUrl | None,
-        Field(
-            description='URL to an electronic signing service (e.g., DocuSign) for human signature workflows. When present, a human must sign before the buyer agent can proceed with create_media_buy.'
-        ),
-    ] = None
     terms: Annotated[
         Terms | None,
         Field(
-            description='Structured terms for agent validation. Agents can programmatically verify these match the proposal and campaign requirements.'
+            description='Summary fields echoed from the committed proposal for agent verification. Buyer agents use these to confirm the IO matches what was negotiated before a human signs. These are read-only summaries, not negotiation surfaces — deal terms live on products and packages.'
         ),
     ] = None
     terms_url: Annotated[
@@ -77,3 +65,15 @@ class InsertionOrder(AdCPBaseModel):
             description='URL to a human-readable document containing the full insertion order terms'
         ),
     ] = None
+    signing_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to an electronic signing service (e.g., DocuSign) for human signature workflows. When present, a human must sign before the buyer agent can proceed with create_media_buy.'
+        ),
+    ] = None
+    requires_signature: Annotated[
+        bool,
+        Field(
+            description='Whether the buyer must accept this IO before creating a media buy. When true, create_media_buy requires an io_acceptance referencing this io_id.'
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/core/installment.py b/src/adcp/types/generated_poc/core/installment.py
index 75d2b0dc5..d4d8edf99 100644
--- a/src/adcp/types/generated_poc/core/installment.py
+++ b/src/adcp/types/generated_poc/core/installment.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/installment.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -34,61 +34,52 @@ class Installment(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    ad_inventory: Annotated[
-        ad_inventory_config.AdInventoryConfiguration | None,
-        Field(
-            description='Break-based ad inventory for this installment. For non-break formats (host reads, integrations), use product placements.'
-        ),
-    ] = None
+    installment_id: Annotated[
+        str, Field(description='Unique identifier for this installment within the collection')
+    ]
     collection_id: Annotated[
         str | None,
         Field(
             description="Parent collection reference. Required when the product spans multiple collections. Maps to a collection_id declared in one of the publishers' adagents.json files referenced by the product's collection selectors."
         ),
     ] = None
-    content_rating: Annotated[
-        content_rating_1.ContentRating | None,
-        Field(
-            description="Installment-specific content rating. Overrides the collection's baseline content_rating when present."
-        ),
+    name: Annotated[str | None, Field(description='Installment title')] = None
+    season: Annotated[
+        str | None, Field(description="Season identifier (e.g., '1', '2024', 'spring_2026')")
     ] = None
-    deadlines: Annotated[
-        installment_deadlines.InstallmentDeadlines | None,
-        Field(
-            description='Booking, cancellation, and material submission deadlines for this installment. Present when the installment has time-sensitive inventory that requires advance commitment or material delivery.'
-        ),
+    installment_number: Annotated[
+        str | None, Field(description="Installment number within the season (e.g., '3', '47')")
     ] = None
-    derivative_of: Annotated[
-        DerivativeOf | None,
-        Field(
-            description='When this installment is a clip, highlight, or recap derived from a full installment. The source installment_id must reference an installment within the same response.'
-        ),
+    scheduled_at: Annotated[
+        AwareDatetime | None, Field(description='When the installment airs or publishes (ISO 8601)')
+    ] = None
+    status: Annotated[
+        installment_status.InstallmentStatus | None,
+        Field(description='Lifecycle status of the installment'),
     ] = None
     duration_seconds: Annotated[
         int | None, Field(description='Expected duration of the installment in seconds', ge=0)
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     flexible_end: Annotated[
         bool | None, Field(description='Whether the end time is approximate (live events, sports)')
     ] = None
-    guest_talent: Annotated[
-        list[talent.Talent] | None,
+    valid_until: Annotated[
+        AwareDatetime | None,
         Field(
-            description="Installment-specific guests and talent. Additive to the collection's recurring talent."
+            description='When this installment data expires and should be re-queried. Agents should re-query before committing budget to products with tentative installments.'
         ),
     ] = None
-    installment_id: Annotated[
-        str, Field(description='Unique identifier for this installment within the collection')
-    ]
-    installment_number: Annotated[
-        str | None, Field(description="Installment number within the season (e.g., '3', '47')")
-    ] = None
-    name: Annotated[str | None, Field(description='Installment title')] = None
-    scheduled_at: Annotated[
-        AwareDatetime | None, Field(description='When the installment airs or publishes (ISO 8601)')
+    content_rating: Annotated[
+        content_rating_1.ContentRating | None,
+        Field(
+            description="Installment-specific content rating. Overrides the collection's baseline content_rating when present."
+        ),
     ] = None
-    season: Annotated[
-        str | None, Field(description="Season identifier (e.g., '1', '2024', 'spring_2026')")
+    topics: Annotated[
+        list[str] | None,
+        Field(
+            description="Content topics for this installment. Uses the same taxonomy as the collection's genre_taxonomy when present. Enables installment-level brand safety evaluation beyond content_rating."
+        ),
     ] = None
     special: Annotated[
         special_1.Special | None,
@@ -96,19 +87,28 @@ class Installment(AdCPBaseModel):
             description='Installment-specific event context. When present, this installment is anchored to a real-world event. Overrides the collection-level special when present.'
         ),
     ] = None
-    status: Annotated[
-        installment_status.InstallmentStatus | None,
-        Field(description='Lifecycle status of the installment'),
+    guest_talent: Annotated[
+        list[talent.Talent] | None,
+        Field(
+            description="Installment-specific guests and talent. Additive to the collection's recurring talent."
+        ),
     ] = None
-    topics: Annotated[
-        list[str] | None,
+    ad_inventory: Annotated[
+        ad_inventory_config.AdInventoryConfiguration | None,
         Field(
-            description="Content topics for this installment. Uses the same taxonomy as the collection's genre_taxonomy when present. Enables installment-level brand safety evaluation beyond content_rating."
+            description='Break-based ad inventory for this installment. For non-break formats (host reads, integrations), use product placements.'
         ),
     ] = None
-    valid_until: Annotated[
-        AwareDatetime | None,
+    deadlines: Annotated[
+        installment_deadlines.InstallmentDeadlines | None,
         Field(
-            description='When this installment data expires and should be re-queried. Agents should re-query before committing budget to products with tentative installments.'
+            description='Booking, cancellation, and material submission deadlines for this installment. Present when the installment has time-sensitive inventory that requires advance commitment or material delivery.'
         ),
     ] = None
+    derivative_of: Annotated[
+        DerivativeOf | None,
+        Field(
+            description='When this installment is a clip, highlight, or recap derived from a full installment. The source installment_id must reference an installment within the same response.'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/job_item.py b/src/adcp/types/generated_poc/core/job_item.py
index 1a7d510de..7abe44233 100644
--- a/src/adcp/types/generated_poc/core/job_item.py
+++ b/src/adcp/types/generated_poc/core/job_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/job_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -42,9 +42,9 @@ class Salary(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    currency: Annotated[str, Field(description='ISO 4217 currency code.', pattern='^[A-Z]{3}$')]
-    max: Annotated[float | None, Field(description='Maximum salary.', ge=0.0)] = None
     min: Annotated[float | None, Field(description='Minimum salary.', ge=0.0)] = None
+    max: Annotated[float | None, Field(description='Maximum salary.', ge=0.0)] = None
+    currency: Annotated[str, Field(description='ISO 4217 currency code.', pattern='^[A-Z]{3}$')]
     period: Annotated[Period, Field(description='Pay period.')]
 
 
@@ -52,36 +52,38 @@ class JobItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    apply_url: Annotated[AnyUrl | None, Field(description='Direct application URL.')] = None
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
-        Field(
-            description="Typed creative asset pools for this job. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (company/role hero), 'images_vertical' (9:16 for Stories), 'logo' (company logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-            min_length=1,
-        ),
-    ] = None
+    job_id: Annotated[str, Field(description='Unique identifier for this job posting.')]
+    title: Annotated[
+        str, Field(description="Job title (e.g., 'Senior Software Engineer', 'Marketing Manager').")
+    ]
     company_name: Annotated[str, Field(description='Hiring company or organization name.')]
-    date_posted: Annotated[
-        date_aliased | None, Field(description='Date the job was posted (ISO 8601 date).')
-    ] = None
     description: Annotated[
         str,
         Field(description='Full job description including responsibilities and qualifications.'),
     ]
+    location: Annotated[
+        str | None,
+        Field(
+            description="Job location as a display string (e.g., 'Amsterdam, NL', 'Remote', 'New York, NY'). Use 'Remote' for fully remote positions."
+        ),
+    ] = None
     employment_type: Annotated[EmploymentType | None, Field(description='Type of employment.')] = (
         None
     )
     experience_level: Annotated[
         ExperienceLevel | None, Field(description='Required experience level.')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    industries: Annotated[
-        list[str] | None,
-        Field(
-            description="Industry classifications (e.g., 'technology', 'healthcare', 'retail').",
-            min_length=1,
-        ),
+    salary: Annotated[
+        Salary | None,
+        Field(description='Salary range. Specify min and/or max with currency and period.'),
+    ] = None
+    date_posted: Annotated[
+        date_aliased | None, Field(description='Date the job was posted (ISO 8601 date).')
     ] = None
+    valid_through: Annotated[
+        date_aliased | None, Field(description='Application deadline (ISO 8601 date).')
+    ] = None
+    apply_url: Annotated[AnyUrl | None, Field(description='Direct application URL.')] = None
     job_functions: Annotated[
         list[str] | None,
         Field(
@@ -89,17 +91,13 @@ class JobItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    job_id: Annotated[str, Field(description='Unique identifier for this job posting.')]
-    location: Annotated[
-        str | None,
+    industries: Annotated[
+        list[str] | None,
         Field(
-            description="Job location as a display string (e.g., 'Amsterdam, NL', 'Remote', 'New York, NY'). Use 'Remote' for fully remote positions."
+            description="Industry classifications (e.g., 'technology', 'healthcare', 'retail').",
+            min_length=1,
         ),
     ] = None
-    salary: Annotated[
-        Salary | None,
-        Field(description='Salary range. Specify min and/or max with currency and period.'),
-    ] = None
     tags: Annotated[
         list[str] | None,
         Field(
@@ -107,9 +105,11 @@ class JobItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    title: Annotated[
-        str, Field(description="Job title (e.g., 'Senior Software Engineer', 'Marketing Manager').")
-    ]
-    valid_through: Annotated[
-        date_aliased | None, Field(description='Application deadline (ISO 8601 date).')
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this job. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (company/role hero), 'images_vertical' (9:16 for Stories), 'logo' (company logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+            min_length=1,
+        ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/material_deadline.py b/src/adcp/types/generated_poc/core/material_deadline.py
index 2aaa6101a..d5e11e6b3 100644
--- a/src/adcp/types/generated_poc/core/material_deadline.py
+++ b/src/adcp/types/generated_poc/core/material_deadline.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/material_deadline.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,6 +14,13 @@ class MaterialDeadline(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    stage: Annotated[
+        str,
+        Field(
+            description="Submission stage identifier. Use 'draft' for materials that need seller processing and 'final' for production-ready assets. Sellers may define additional stages.",
+            examples=['draft', 'final'],
+        ),
+    ]
     due_at: Annotated[
         AwareDatetime, Field(description='When materials for this stage are due (ISO 8601)')
     ]
@@ -23,10 +30,3 @@ class MaterialDeadline(AdCPBaseModel):
             description="What the seller needs at this stage (e.g., 'Talking points and brand guidelines', 'Press-ready PDF with bleed')"
         ),
     ] = None
-    stage: Annotated[
-        str,
-        Field(
-            description="Submission stage identifier. Use 'draft' for materials that need seller processing and 'final' for production-ready assets. Sellers may define additional stages.",
-            examples=['draft', 'final'],
-        ),
-    ]
diff --git a/src/adcp/types/generated_poc/core/mcp_webhook_payload.py b/src/adcp/types/generated_poc/core/mcp_webhook_payload.py
index 3fea854d2..bafb9a034 100644
--- a/src/adcp/types/generated_poc/core/mcp_webhook_payload.py
+++ b/src/adcp/types/generated_poc/core/mcp_webhook_payload.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/mcp_webhook_payload.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,7 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AwareDatetime, ConfigDict, Field
 
-from ..enums import adcp_domain, task_status
+from ..enums import adcp_protocol, task_status
 from ..enums import task_type as task_type_1
 from . import async_response_data
 
@@ -18,28 +18,49 @@ class McpWebhookPayload(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context_id: Annotated[
+    operation_id: Annotated[
         str | None,
         Field(
-            description='Session/conversation identifier. Use this to continue the conversation if input-required status needs clarification or additional parameters.'
+            description='Client-generated identifier that was embedded in the webhook URL by the buyer. Publishers echo this back in webhook payloads so clients can correlate notifications without parsing URL paths. Typically generated as a unique ID per task invocation.'
         ),
     ] = None
-    domain: Annotated[
-        adcp_domain.AdcpDomain | None,
+    task_id: Annotated[
+        str,
         Field(
-            description='AdCP domain this task belongs to. Helps classify the operation type at a high level.'
+            description='Unique identifier for this task. Use this to correlate webhook notifications with the original task submission.'
+        ),
+    ]
+    task_type: Annotated[
+        task_type_1.TaskType,
+        Field(
+            description='Type of AdCP operation that triggered this webhook. Enables webhook handlers to route to appropriate processing logic.'
+        ),
+    ]
+    protocol: Annotated[
+        adcp_protocol.AdcpProtocol | None,
+        Field(
+            description='AdCP protocol this task belongs to. Helps classify the operation type at a high level.'
         ),
     ] = None
+    status: Annotated[
+        task_status.TaskStatus,
+        Field(
+            description='Current task status. Webhooks are triggered for status changes after initial submission.'
+        ),
+    ]
+    timestamp: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when this webhook was generated.')
+    ]
     message: Annotated[
         str | None,
         Field(
             description='Human-readable summary of the current task state. Provides context about what happened and what action may be needed.'
         ),
     ] = None
-    operation_id: Annotated[
+    context_id: Annotated[
         str | None,
         Field(
-            description='Client-generated identifier that was embedded in the webhook URL by the buyer. Publishers echo this back in webhook payloads so clients can correlate notifications without parsing URL paths. Typically generated as a unique ID per task invocation.'
+            description='Session/conversation identifier. Use this to continue the conversation if input-required status needs clarification or additional parameters.'
         ),
     ] = None
     result: Annotated[
@@ -48,24 +69,3 @@ class McpWebhookPayload(AdCPBaseModel):
             description='Task-specific payload matching the status. For completed/failed, contains the full task response. For working/input-required/submitted, contains status-specific data. This is the data layer that AdCP specs - same structure used in A2A status.message.parts[].data.'
         ),
     ] = None
-    status: Annotated[
-        task_status.TaskStatus,
-        Field(
-            description='Current task status. Webhooks are triggered for status changes after initial submission.'
-        ),
-    ]
-    task_id: Annotated[
-        str,
-        Field(
-            description='Unique identifier for this task. Use this to correlate webhook notifications with the original task submission.'
-        ),
-    ]
-    task_type: Annotated[
-        task_type_1.TaskType,
-        Field(
-            description='Type of AdCP operation that triggered this webhook. Enables webhook handlers to route to appropriate processing logic.'
-        ),
-    ]
-    timestamp: Annotated[
-        AwareDatetime, Field(description='ISO 8601 timestamp when this webhook was generated.')
-    ]
diff --git a/src/adcp/types/generated_poc/core/measurement_readiness.py b/src/adcp/types/generated_poc/core/measurement_readiness.py
index 34a256ff2..21f755505 100644
--- a/src/adcp/types/generated_poc/core/measurement_readiness.py
+++ b/src/adcp/types/generated_poc/core/measurement_readiness.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/measurement_readiness.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,10 +17,17 @@ class MeasurementReadiness(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    issues: Annotated[
-        list[diagnostic_issue.DiagnosticIssue] | None,
+    status: Annotated[
+        assessment_status.AssessmentStatus,
         Field(
-            description='Actionable issues preventing full measurement readiness. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.'
+            description="Overall measurement readiness level for this product given the buyer's event setup. 'insufficient' means the product cannot optimize effectively with the current setup."
+        ),
+    ]
+    required_event_types: Annotated[
+        list[event_type.EventType] | None,
+        Field(
+            description='Event types this product needs for effective optimization. Buyers should ensure their event sources cover these types.',
+            min_length=1,
         ),
     ] = None
     missing_event_types: Annotated[
@@ -29,22 +36,15 @@ class MeasurementReadiness(AdCPBaseModel):
             description='Event types this product requires that the buyer has not configured. Empty or absent when all required types are covered.'
         ),
     ] = None
-    notes: Annotated[
-        str | None,
+    issues: Annotated[
+        list[diagnostic_issue.DiagnosticIssue] | None,
         Field(
-            description='Seller explanation of the readiness assessment, recommendations for improvement, or context about what the buyer needs to change.'
+            description='Actionable issues preventing full measurement readiness. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.'
         ),
     ] = None
-    required_event_types: Annotated[
-        list[event_type.EventType] | None,
+    notes: Annotated[
+        str | None,
         Field(
-            description='Event types this product needs for effective optimization. Buyers should ensure their event sources cover these types.',
-            min_length=1,
+            description='Seller explanation of the readiness assessment, recommendations for improvement, or context about what the buyer needs to change.'
         ),
     ] = None
-    status: Annotated[
-        assessment_status.AssessmentStatus,
-        Field(
-            description="Overall measurement readiness level for this product given the buyer's event setup. 'insufficient' means the product cannot optimize effectively with the current setup."
-        ),
-    ]
diff --git a/src/adcp/types/generated_poc/core/measurement_terms.py b/src/adcp/types/generated_poc/core/measurement_terms.py
index 15faad569..a868b1d44 100644
--- a/src/adcp/types/generated_poc/core/measurement_terms.py
+++ b/src/adcp/types/generated_poc/core/measurement_terms.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/measurement_terms.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -34,8 +34,17 @@ class BillingMeasurement(AdCPBaseModel):
     measurement_window: Annotated[
         str | None,
         Field(
-            description="Which measurement window the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. For broadcast TV, this is typically 'c7' (live + 7 days DVR). When absent, billing is based on the seller's standard reporting without windowed maturation.",
-            examples=['live', 'c3', 'c7'],
+            description="Which measurement maturation stage the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. Examples: 'c7' for broadcast TV guarantees (live + 7 days DVR), 'final' for DOOH after IVT/fraud-check processing, 'post_sivt' for digital after sophisticated invalid-traffic filtering, 'downloads_30d' for podcast. When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=[
+                'live',
+                'c3',
+                'c7',
+                'tentative',
+                'final',
+                'post_ivt',
+                'post_sivt',
+                'downloads_30d',
+            ],
         ),
     ] = None
 
diff --git a/src/adcp/types/generated_poc/core/measurement_window.py b/src/adcp/types/generated_poc/core/measurement_window.py
new file mode 100644
index 000000000..af2e81877
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/measurement_window.py
@@ -0,0 +1,58 @@
+# generated by datamodel-codegen:
+#   filename:  core/measurement_window.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class MeasurementWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    window_id: Annotated[
+        str,
+        Field(
+            description="Identifier for this maturation stage. Standard broadcast values: 'live' (real-time viewers only), 'c3' (live + 3 days time-shifted), 'c7' (live + 7 days time-shifted). Standard values for other channels include 'tentative' (provisional data available quickly), 'final' (post-processing certified data), 'post_ivt' (digital after invalid-traffic filtering), 'post_sivt' (digital after sophisticated-IVT filtering), 'downloads_7d' / 'downloads_30d' (podcast download maturation). Sellers may define custom IDs.",
+            examples=['live', 'c3', 'c7', 'tentative', 'final', 'post_ivt', 'downloads_30d'],
+            max_length=50,
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of what this window measures',
+            examples=[
+                'Live broadcast impressions only',
+                'Live plus 7 days of time-shifted viewing',
+                'Tentative plays before IVT and fraud-check processing',
+                'Final plays after IVT and fraud-check processing',
+                'Impressions after sophisticated invalid-traffic filtering',
+            ],
+            max_length=500,
+        ),
+    ] = None
+    duration_days: Annotated[
+        int,
+        Field(
+            description='Number of days of accumulation included in this window before processing begins. For broadcast, this is DVR accumulation (0 = live only, 3 = live + 3 days DVR, 7 = live + 7 days DVR). For channels without an accumulation period (DOOH tentative→final, digital IVT filtering), this is 0 — maturation is entirely vendor processing time captured in expected_availability_days.',
+            ge=0,
+        ),
+    ]
+    expected_availability_days: Annotated[
+        int | None,
+        Field(
+            description="Expected number of days after delivery before this window's data is available from the measurement vendor. Captures accumulation time plus vendor processing time. Examples: broadcast C7 from VideoAmp ~22 days (7-day accumulation + ~15-day processing); DOOH tentative plays same-day; DOOH final (post-IVT/fraud-check) ~1 day; digital post-SIVT ~2–3 days.",
+            ge=0,
+        ),
+    ] = None
+    is_guarantee_basis: Annotated[
+        bool | None,
+        Field(
+            description="Whether this window is the basis for delivery guarantees, reconciliation, and invoicing. A product typically has one guarantee basis window (e.g., C7 for most US broadcast, post-IVT final for DOOH). Buyers reconcile against the guarantee basis window's final numbers."
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/media_buy.py b/src/adcp/types/generated_poc/core/media_buy.py
index 66c7d2214..0a3ec6832 100644
--- a/src/adcp/types/generated_poc/core/media_buy.py
+++ b/src/adcp/types/generated_poc/core/media_buy.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/media_buy.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -40,12 +40,16 @@ class MediaBuy(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    media_buy_id: Annotated[str, Field(description="Seller's unique identifier for the media buy")]
     account: Annotated[
         account_1.Account | None, Field(description='Account billed for this media buy')
     ] = None
-    cancellation: Annotated[
-        Cancellation | None,
-        Field(description="Cancellation metadata. Present only when status is 'canceled'."),
+    status: media_buy_status.MediaBuyStatus
+    rejection_reason: Annotated[
+        str | None,
+        Field(
+            description="Reason provided by the seller when status is 'rejected'. Present only when status is 'rejected'."
+        ),
     ] = None
     confirmed_at: Annotated[
         AwareDatetime | None,
@@ -53,26 +57,22 @@ class MediaBuy(AdCPBaseModel):
             description='ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation.'
         ),
     ] = None
-    created_at: Annotated[AwareDatetime | None, Field(description='Creation timestamp')] = None
-    creative_deadline: Annotated[
-        AwareDatetime | None, Field(description='ISO 8601 timestamp for creative upload deadline')
+    cancellation: Annotated[
+        Cancellation | None,
+        Field(description="Cancellation metadata. Present only when status is 'canceled'."),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
+    total_budget: Annotated[float, Field(description='Total budget amount', ge=0.0)]
+    packages: Annotated[
+        list[package.Package], Field(description='Array of packages within this media buy')
+    ]
     invoice_recipient: Annotated[
         business_entity.BusinessEntity | None,
         Field(
             description="Per-buy override for who receives the invoice. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
         ),
     ] = None
-    media_buy_id: Annotated[str, Field(description="Seller's unique identifier for the media buy")]
-    packages: Annotated[
-        list[package.Package], Field(description='Array of packages within this media buy')
-    ]
-    rejection_reason: Annotated[
-        str | None,
-        Field(
-            description="Reason provided by the seller when status is 'rejected'. Present only when status is 'rejected'."
-        ),
+    creative_deadline: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 timestamp for creative upload deadline')
     ] = None
     revision: Annotated[
         int | None,
@@ -81,6 +81,6 @@ class MediaBuy(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    status: media_buy_status.MediaBuyStatus
-    total_budget: Annotated[float, Field(description='Total budget amount', ge=0.0)]
+    created_at: Annotated[AwareDatetime | None, Field(description='Creation timestamp')] = None
     updated_at: Annotated[AwareDatetime | None, Field(description='Last update timestamp')] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/media_buy_features.py b/src/adcp/types/generated_poc/core/media_buy_features.py
index 8694bd464..861c81c62 100644
--- a/src/adcp/types/generated_poc/core/media_buy_features.py
+++ b/src/adcp/types/generated_poc/core/media_buy_features.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/media_buy_features.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,30 +11,6 @@
 
 
 class MediaBuyFeatures(AdCPBaseModel):
-    audience_targeting: Annotated[
-        bool | None,
-        Field(
-            description='Supports sync_audiences task and audience_include/audience_exclude in targeting overlays for first-party CRM audience management'
-        ),
-    ] = None
-    catalog_management: Annotated[
-        bool | None,
-        Field(
-            description='Supports sync_catalogs task for catalog feed management with platform review and approval'
-        ),
-    ] = None
-    content_standards: Annotated[
-        bool | None,
-        Field(
-            description='Full support for content_standards configuration including sampling rates and category filtering'
-        ),
-    ] = None
-    conversion_tracking: Annotated[
-        bool | None,
-        Field(
-            description='Supports sync_event_sources and log_event tasks for conversion event tracking'
-        ),
-    ] = None
     inline_creative_management: Annotated[
         bool | None,
         Field(description='Supports creatives provided inline in create_media_buy requests'),
@@ -45,3 +21,9 @@ class MediaBuyFeatures(AdCPBaseModel):
             description='Honors property_list parameter in get_products to filter results to buyer-approved properties'
         ),
     ] = None
+    catalog_management: Annotated[
+        bool | None,
+        Field(
+            description='Supports sync_catalogs task for catalog feed management with platform review and approval'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/offering.py b/src/adcp/types/generated_poc/core/offering.py
index 4b4657233..e8ee29426 100644
--- a/src/adcp/types/generated_poc/core/offering.py
+++ b/src/adcp/types/generated_poc/core/offering.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/offering.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,6 +18,10 @@ class Country(RootModel[str]):
     root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
 
+class Region(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+
+
 class Metro(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
@@ -29,10 +33,6 @@ class Metro(AdCPBaseModel):
     values: Annotated[list[str], Field(description='Metro codes within the system', min_length=1)]
 
 
-class Region(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
-
-
 class PostalArea(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
@@ -55,6 +55,13 @@ class GeoTargets(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    regions: Annotated[
+        list[Region] | None,
+        Field(
+            description="Regions or states where this offering is relevant. ISO 3166-2 subdivision codes (e.g., 'NL-NH', 'US-CA').",
+            min_length=1,
+        ),
+    ] = None
     metros: Annotated[
         list[Metro] | None,
         Field(
@@ -69,51 +76,46 @@ class GeoTargets(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    regions: Annotated[
-        list[Region] | None,
-        Field(
-            description="Regions or states where this offering is relevant. ISO 3166-2 subdivision codes (e.g., 'NL-NH', 'US-CA').",
-            min_length=1,
-        ),
-    ] = None
 
 
 class Offering(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
+    offering_id: Annotated[
+        str,
         Field(
-            description='Structured asset groups for this offering. Each group carries a typed pool of creative assets (headlines, images, videos, etc.) identified by a group ID that matches format-level vocabulary.'
+            description='Unique identifier for this offering. Used by hosts to reference specific offerings in si_get_offering calls.'
         ),
-    ] = None
-    categories: Annotated[
-        list[str] | None,
+    ]
+    name: Annotated[
+        str,
         Field(
-            description="Categories this offering belongs to (e.g., 'measurement', 'identity', 'programmatic')"
+            description="Human-readable offering name (e.g., 'Winter Sale', 'Free Trial', 'Enterprise Platform')"
         ),
+    ]
+    description: Annotated[str | None, Field(description="Description of what's being offered")] = (
+        None
+    )
+    tagline: Annotated[
+        str | None, Field(description='Short promotional tagline for the offering')
     ] = None
-    checkout_url: Annotated[
-        AnyUrl | None,
+    valid_from: Annotated[
+        AwareDatetime | None,
         Field(
-            description="URL for checkout/purchase flow when the brand doesn't support agentic checkout."
+            description='When the offering becomes available. If not specified, offering is immediately available.'
         ),
     ] = None
-    description: Annotated[str | None, Field(description="Description of what's being offered")] = (
-        None
-    )
-    ext: ext_1.ExtensionObject | None = None
-    geo_targets: Annotated[
-        GeoTargets | None,
+    valid_to: Annotated[
+        AwareDatetime | None,
         Field(
-            description="Geographic scope of this offering. Declares where the offering is relevant — for location-specific offerings such as job vacancies, in-store promotions, or local events. Platforms use this to target geographically appropriate audiences and to filter out offerings irrelevant to a user's location. Uses the same geographic structures as targeting_overlay in create_media_buy."
+            description='When the offering expires. If not specified, offering has no expiration.'
         ),
     ] = None
-    keywords: Annotated[
-        list[str] | None,
+    checkout_url: Annotated[
+        AnyUrl | None,
         Field(
-            description='Keywords for matching this offering to user intent. Hosts use these for retrieval/relevance scoring.'
+            description="URL for checkout/purchase flow when the brand doesn't support agentic checkout."
         ),
     ] = None
     landing_url: Annotated[
@@ -122,30 +124,28 @@ class Offering(AdCPBaseModel):
             description="Landing page URL for this offering. For catalog-driven creatives, this is the per-item click-through destination that platforms map to the ad's link-out URL. Every offering in a catalog should have a landing_url unless the format provides its own destination logic."
         ),
     ] = None
-    name: Annotated[
-        str,
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
         Field(
-            description="Human-readable offering name (e.g., 'Winter Sale', 'Free Trial', 'Enterprise Platform')"
+            description='Structured asset groups for this offering. Each group carries a typed pool of creative assets (headlines, images, videos, etc.) identified by a group ID that matches format-level vocabulary.'
         ),
-    ]
-    offering_id: Annotated[
-        str,
+    ] = None
+    geo_targets: Annotated[
+        GeoTargets | None,
         Field(
-            description='Unique identifier for this offering. Used by hosts to reference specific offerings in si_get_offering calls.'
+            description="Geographic scope of this offering. Declares where the offering is relevant — for location-specific offerings such as job vacancies, in-store promotions, or local events. Platforms use this to target geographically appropriate audiences and to filter out offerings irrelevant to a user's location. Uses the same geographic structures as targeting_overlay in create_media_buy."
         ),
-    ]
-    tagline: Annotated[
-        str | None, Field(description='Short promotional tagline for the offering')
     ] = None
-    valid_from: Annotated[
-        AwareDatetime | None,
+    keywords: Annotated[
+        list[str] | None,
         Field(
-            description='When the offering becomes available. If not specified, offering is immediately available.'
+            description='Keywords for matching this offering to user intent. Hosts use these for retrieval/relevance scoring.'
         ),
     ] = None
-    valid_to: Annotated[
-        AwareDatetime | None,
+    categories: Annotated[
+        list[str] | None,
         Field(
-            description='When the offering expires. If not specified, offering has no expiration.'
+            description="Categories this offering belongs to (e.g., 'measurement', 'identity', 'programmatic')"
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/offering_asset_group.py b/src/adcp/types/generated_poc/core/offering_asset_group.py
index bc6c98209..7be268a2a 100644
--- a/src/adcp/types/generated_poc/core/offering_asset_group.py
+++ b/src/adcp/types/generated_poc/core/offering_asset_group.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/offering_asset_group.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -41,7 +41,6 @@ class OfferingAssetGroup(AdCPBaseModel):
         asset_content_type.AssetContentType,
         Field(description='The content type of all items in this group.'),
     ]
-    ext: ext_1.ExtensionObject | None = None
     items: Annotated[
         list[
             text_asset.TextAsset
@@ -62,3 +61,4 @@ class OfferingAssetGroup(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/optimization_goal.py b/src/adcp/types/generated_poc/core/optimization_goal.py
index 7a3b0eae2..aa6e6645c 100644
--- a/src/adcp/types/generated_poc/core/optimization_goal.py
+++ b/src/adcp/types/generated_poc/core/optimization_goal.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/optimization_goal.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -29,34 +29,17 @@ class Metric(Enum):
     reach = 'reach'
 
 
-class Target(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    kind: Literal['cost_per']
-    value: Annotated[
-        float, Field(description='Target cost per metric unit in the buy currency', gt=0.0)
-    ]
-
-
-class Target1(AdCPBaseModel):
+class TargetFrequency(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    kind: Literal['threshold_rate']
-    value: Annotated[
-        float,
+    min: Annotated[
+        int,
         Field(
-            description='Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).',
-            gt=0.0,
+            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
+            ge=1,
         ),
     ]
-
-
-class TargetFrequency(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
     max: Annotated[
         int | None,
         Field(
@@ -64,13 +47,6 @@ class TargetFrequency(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    min: Annotated[
-        int,
-        Field(
-            description='Minimum frequency for an entity to be considered meaningfully reached within the window. Impressions that would bring an entity below this threshold are treated as high-value (growing reach). When omitted, the seller uses their platform default (typically 1).',
-            ge=1,
-        ),
-    ]
     window: Annotated[
         duration.Duration,
         Field(
@@ -79,17 +55,10 @@ class TargetFrequency(AdCPBaseModel):
     ]
 
 
-class TargetFrequency1(AdCPBaseModel):
+class TargetFrequency5(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    max: Annotated[
-        int,
-        Field(
-            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
-            ge=1,
-        ),
-    ]
     min: Annotated[
         int | None,
         Field(
@@ -97,6 +66,13 @@ class TargetFrequency1(AdCPBaseModel):
             ge=1,
         ),
     ] = None
+    max: Annotated[
+        int,
+        Field(
+            description='Frequency at which an entity is considered saturated within the window. Impressions toward entities at or above this threshold are treated as lower-value. When both min and max are present, max must be greater than or equal to min. When omitted, the seller determines the saturation point.',
+            ge=1,
+        ),
+    ]
     window: Annotated[
         duration.Duration,
         Field(
@@ -105,34 +81,34 @@ class TargetFrequency1(AdCPBaseModel):
     ]
 
 
-class AttributionWindow(AdCPBaseModel):
+class Target(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    post_click: Annotated[
-        duration.Duration,
-        Field(
-            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
-        ),
+    kind: Literal['cost_per']
+    value: Annotated[
+        float, Field(description='Target cost per metric unit in the buy currency', gt=0.0)
     ]
-    post_view: Annotated[
-        duration.Duration | None,
+
+
+class Target11(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['threshold_rate']
+    value: Annotated[
+        float,
         Field(
-            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
+            description='Minimum per-impression value. Units depend on the metric: proportion (clicks, views, completed_views), seconds (viewed_seconds, attention_seconds), or score (attention_score).',
+            gt=0.0,
         ),
-    ] = None
+    ]
 
 
 class EventSource(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    custom_event_name: Annotated[
-        str | None,
-        Field(
-            description="Required when event_type is 'custom'. Platform-specific name for the custom event."
-        ),
-    ] = None
     event_source_id: Annotated[
         str,
         Field(
@@ -146,21 +122,27 @@ class EventSource(AdCPBaseModel):
             description='Event type to include from this source (e.g., purchase, lead, app_install, refund)'
         ),
     ]
-    value_factor: Annotated[
-        float | None,
+    custom_event_name: Annotated[
+        str | None,
         Field(
-            description="Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs — the seller applies it when computing aggregated value metrics."
+            description="Required when event_type is 'custom'. Platform-specific name for the custom event."
         ),
-    ] = 1
+    ] = None
     value_field: Annotated[
         str | None,
         Field(
-            description="Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value'. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs — the seller maps it to their platform's value ingestion mechanism."
+            description="Which field in the event's custom_data carries the monetary value. The seller must use this field for value extraction and aggregation when computing ROAS and conversion value metrics. Required on at least one entry when target.kind is 'per_ad_spend' or 'maximize_value' — sellers must reject these target kinds when no event source entry includes value_field. When present without a value-oriented target, the seller may use it for delivery reporting (conversion_value, roas) but must not change the optimization objective. Common values: 'value', 'order_total', 'profit_margin'. This is not passed as a parameter to underlying platform APIs — the seller maps it to their platform's value ingestion mechanism."
         ),
     ] = None
+    value_factor: Annotated[
+        float | None,
+        Field(
+            description="Multiplier the seller must apply to value_field before aggregation. Use -1 for refund events (negate the value), 0.01 for values in cents, -0.01 for refunds in cents. A value of 0 zeroes out this source's value contribution (the source still counts for event dedup). Defaults to 1. This is not passed as a parameter to underlying platform APIs — the seller applies it when computing aggregated value metrics."
+        ),
+    ] = 1
 
 
-class Target2(AdCPBaseModel):
+class Target12(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
@@ -168,7 +150,7 @@ class Target2(AdCPBaseModel):
     value: Annotated[float, Field(description='Target cost per event in the buy currency', gt=0.0)]
 
 
-class Target3(AdCPBaseModel):
+class Target13(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
@@ -179,23 +161,36 @@ class Target3(AdCPBaseModel):
     ]
 
 
-class Target4(AdCPBaseModel):
+class Target14(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
     kind: Literal['maximize_value']
 
 
-class OptimizationGoal2(AdCPBaseModel):
+class AttributionWindow(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    attribution_window: Annotated[
-        AttributionWindow | None,
+    post_click: Annotated[
+        duration.Duration,
         Field(
-            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+            description='Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {"interval": 7, "unit": "days"}).'
+        ),
+    ]
+    post_view: Annotated[
+        duration.Duration | None,
+        Field(
+            description='Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {"interval": 1, "unit": "days"}).'
         ),
     ] = None
+
+
+class OptimizationGoal2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    kind: Literal['event']
     event_sources: Annotated[
         list[EventSource],
         Field(
@@ -203,7 +198,18 @@ class OptimizationGoal2(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    kind: Literal['event']
+    target: Annotated[
+        Target12 | Target13 | Target14 | None,
+        Field(
+            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversion count within budget — regardless of whether value_field is present on event sources. The presence of value_field alone does not change the optimization objective; it only makes value available for reporting. An explicit target of maximize_value or per_ad_spend is required to steer toward value.'
+        ),
+    ] = None
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description="Attribution window for this optimization goal. Values must match an option declared in the seller's conversion_tracking.attribution_windows capability. Sellers must reject windows not in their declared capabilities. When omitted, the seller uses their default window."
+        ),
+    ] = None
     priority: Annotated[
         int | None,
         Field(
@@ -211,12 +217,6 @@ class OptimizationGoal2(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    target: Annotated[
-        Target2 | Target3 | Target4 | None,
-        Field(
-            description='Target cost or return for this event goal. When omitted, the seller optimizes for maximum conversions within budget.'
-        ),
-    ] = None
 
 
 class OptimizationGoal1(AdCPBaseModel):
@@ -230,27 +230,14 @@ class OptimizationGoal1(AdCPBaseModel):
             description="Seller-native metric to optimize for. Delivery metrics: clicks (link clicks, swipe-throughs, CTA taps that navigate away), views (viewable impressions), completed_views (video/audio completions — see view_duration_seconds), reach (unique audience reach — see reach_unit and target_frequency). Duration/score metrics: viewed_seconds (time in view per impression), attention_seconds (attention time per impression), attention_score (vendor-specific attention score). Audience action metrics: engagements (any direct interaction with the ad unit beyond viewing — social reactions/comments/shares, story/unit opens, interactive overlay taps, companion banner interactions on audio and CTV), follows (new followers, page likes, artist/podcast/channel subscribes), saves (saves, bookmarks, playlist adds, pins — signals of intent to return), profile_visits (visits to the brand's in-platform page — profile, artist page, channel, or storefront. Does not include external website clicks, which are covered by 'clicks')."
         ),
     ]
-    priority: Annotated[
-        int | None,
-        Field(
-            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
-            ge=1,
-        ),
-    ] = None
     reach_unit: Annotated[
         reach_unit_1.ReachUnit | None,
         Field(
             description="Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
         ),
     ] = None
-    target: Annotated[
-        Target | Target1 | None,
-        Field(
-            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
-        ),
-    ] = None
     target_frequency: Annotated[
-        TargetFrequency | TargetFrequency1 | None,
+        TargetFrequency | TargetFrequency5 | None,
         Field(
             description="Target frequency band for reach optimization. Only applicable when metric is 'reach'. Frames frequency as an optimization signal: the seller should treat impressions toward entities already within the [min, max] band as lower-value, and impressions toward unreached entities as higher-value. This shifts budget toward fresh reach rather than re-reaching known users. When omitted, the seller maximizes unique reach without a frequency constraint. A hard cap can still be layered via targeting_overlay.frequency_cap if a ceiling is needed."
         ),
@@ -262,6 +249,19 @@ class OptimizationGoal1(AdCPBaseModel):
             gt=0.0,
         ),
     ] = None
+    target: Annotated[
+        Target | Target11 | None,
+        Field(
+            description='Target for this metric. When omitted, the seller optimizes for maximum metric volume within budget.'
+        ),
+    ] = None
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Relative priority among all optimization goals on this package. 1 = highest priority (primary goal); higher numbers are lower priority (secondary signals). When omitted, sellers may use array position as priority.',
+            ge=1,
+        ),
+    ] = None
 
 
 class OptimizationGoal(RootModel[OptimizationGoal1 | OptimizationGoal2]):
diff --git a/src/adcp/types/generated_poc/core/outcome_measurement.py b/src/adcp/types/generated_poc/core/outcome_measurement.py
index b42bf4db0..11bcdf538 100644
--- a/src/adcp/types/generated_poc/core/outcome_measurement.py
+++ b/src/adcp/types/generated_poc/core/outcome_measurement.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/outcome_measurement.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,25 +16,18 @@ class OutcomeMeasurement(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    attribution: Annotated[
-        str,
-        Field(
-            description='Attribution methodology',
-            examples=['deterministic_purchase', 'probabilistic'],
-        ),
-    ]
-    reporting: Annotated[
+    type: Annotated[
         str,
         Field(
-            description='Reporting frequency and format',
-            examples=['weekly_dashboard', 'real_time_api'],
+            description='Type of measurement',
+            examples=['incremental_sales_lift', 'brand_lift', 'foot_traffic'],
         ),
     ]
-    type: Annotated[
+    attribution: Annotated[
         str,
         Field(
-            description='Type of measurement',
-            examples=['incremental_sales_lift', 'brand_lift', 'foot_traffic'],
+            description='Attribution methodology',
+            examples=['deterministic_purchase', 'probabilistic'],
         ),
     ]
     window: Annotated[
@@ -43,3 +36,10 @@ class OutcomeMeasurement(AdCPBaseModel):
             description='Attribution window as a structured duration (e.g., {"interval": 30, "unit": "days"}).'
         ),
     ] = None
+    reporting: Annotated[
+        str,
+        Field(
+            description='Reporting frequency and format',
+            examples=['weekly_dashboard', 'real_time_api'],
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/core/overlay.py b/src/adcp/types/generated_poc/core/overlay.py
index f98267396..cff655063 100644
--- a/src/adcp/types/generated_poc/core/overlay.py
+++ b/src/adcp/types/generated_poc/core/overlay.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/overlay.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,6 +11,28 @@
 from pydantic import AnyUrl, ConfigDict, Field
 
 
+class Visual(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor.'
+        ),
+    ] = None
+    light: Annotated[
+        AnyUrl | None,
+        Field(
+            description='URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)'
+        ),
+    ] = None
+    dark: Annotated[
+        AnyUrl | None,
+        Field(description='URL to the overlay graphic for use on dark backgrounds (SVG or PNG)'),
+    ] = None
+
+
 class Unit(Enum):
     px = 'px'
     fraction = 'fraction'
@@ -24,6 +46,9 @@ class Bounds(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    x: Annotated[float, Field(description="Horizontal offset from the asset's left edge")]
+    y: Annotated[float, Field(description="Vertical offset from the asset's top edge")]
+    width: Annotated[float, Field(description='Width of the overlay', ge=0.0)]
     height: Annotated[float, Field(description='Height of the overlay', ge=0.0)]
     unit: Annotated[
         Unit,
@@ -31,41 +56,16 @@ class Bounds(AdCPBaseModel):
             description="'px' = absolute pixels from asset top-left. 'fraction' = proportional to asset dimensions (0.0 = edge, 1.0 = opposite edge). 'inches', 'cm', 'mm', 'pt' (1/72 inch) = physical units for print overlays, measured from asset top-left."
         ),
     ]
-    width: Annotated[float, Field(description='Width of the overlay', ge=0.0)]
-    x: Annotated[float, Field(description="Horizontal offset from the asset's left edge")]
-    y: Annotated[float, Field(description="Vertical offset from the asset's top edge")]
-
-
-class Visual(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    dark: Annotated[
-        AnyUrl | None,
-        Field(description='URL to the overlay graphic for use on dark backgrounds (SVG or PNG)'),
-    ] = None
-    light: Annotated[
-        AnyUrl | None,
-        Field(
-            description='URL to the overlay graphic for use on light/bright backgrounds (SVG or PNG)'
-        ),
-    ] = None
-    url: Annotated[
-        AnyUrl | None,
-        Field(
-            description='URL to a theme-neutral overlay graphic (SVG or PNG). Use when a single file works for all backgrounds, e.g. an SVG using CSS custom properties or currentColor.'
-        ),
-    ] = None
 
 
 class Overlay(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    bounds: Annotated[
-        Bounds,
+    id: Annotated[
+        str,
         Field(
-            description="Position and size of the overlay relative to the asset's own top-left corner. See 'unit' for coordinate interpretation."
+            description="Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')"
         ),
     ]
     description: Annotated[
@@ -74,15 +74,15 @@ class Overlay(AdCPBaseModel):
             description='Human-readable explanation of what this overlay is and how buyers should account for it'
         ),
     ] = None
-    id: Annotated[
-        str,
-        Field(
-            description="Identifier for this overlay (e.g., 'play_pause', 'volume', 'publisher_logo', 'carousel_prev', 'carousel_next')"
-        ),
-    ]
     visual: Annotated[
         Visual | None,
         Field(
             description='Optional visual reference for this overlay element. Useful for creative agents compositing previews and for buyers understanding what will appear over their content. Must include at least one of: url, light, or dark.'
         ),
     ] = None
+    bounds: Annotated[
+        Bounds,
+        Field(
+            description="Position and size of the overlay relative to the asset's own top-left corner. See 'unit' for coordinate interpretation."
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/core/package.py b/src/adcp/types/generated_poc/core/package.py
index d39ac7e12..72177efa5 100644
--- a/src/adcp/types/generated_poc/core/package.py
+++ b/src/adcp/types/generated_poc/core/package.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/package.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,19 +16,15 @@
 from . import context as context_1
 from . import creative_assignment
 from . import ext as ext_1
-from . import format_id, optimization_goal, targeting
+from . import format_id
+from . import measurement_terms as measurement_terms_1
+from . import optimization_goal, performance_standard, targeting
 
 
 class Cancellation(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    acknowledged_at: Annotated[
-        AwareDatetime | None,
-        Field(
-            description='ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation.'
-        ),
-    ] = None
     canceled_at: Annotated[
         AwareDatetime, Field(description='ISO 8601 timestamp when this package was canceled.')
     ]
@@ -39,35 +35,51 @@ class Cancellation(AdCPBaseModel):
     reason: Annotated[
         str | None, Field(description='Reason the package was canceled.', max_length=500)
     ] = None
+    acknowledged_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when the seller acknowledged the cancellation. Confirms inventory has been released and billing stopped. Absent until the seller processes the cancellation.'
+        ),
+    ] = None
 
 
 class Package(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    bid_price: Annotated[
+    package_id: Annotated[str, Field(description="Seller's unique identifier for the package")]
+    product_id: Annotated[
+        str | None, Field(description='ID of the product this package is based on')
+    ] = None
+    budget: Annotated[
         float | None,
         Field(
-            description="Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            description='Budget allocation for this package in the currency specified by the pricing option',
             ge=0.0,
         ),
     ] = None
-    budget: Annotated[
+    pacing: pacing_1.Pacing | None = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description="ID of the selected pricing option from the product's pricing_options array"
+        ),
+    ] = None
+    bid_price: Annotated[
         float | None,
         Field(
-            description='Budget allocation for this package in the currency specified by the pricing option',
+            description="Bid price for auction-based pricing. This is the exact bid/price to honor unless the selected pricing option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
             ge=0.0,
         ),
     ] = None
-    canceled: Annotated[
-        bool | None,
+    price_breakdown: Annotated[
+        price_breakdown_1.PriceBreakdown | None,
         Field(
-            description='Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.'
+            description="Breakdown of the effective price for this package. On fixed-price packages, echoes the pricing option's breakdown. On auction packages, shows the clearing price breakdown including any commission or settlement terms."
         ),
-    ] = False
-    cancellation: Annotated[
-        Cancellation | None,
-        Field(description='Cancellation metadata. Present only when canceled is true.'),
+    ] = None
+    impressions: Annotated[
+        float | None, Field(description='Impression goal for this package', ge=0.0)
     ] = None
     catalogs: Annotated[
         list[catalog.Catalog] | None,
@@ -75,37 +87,34 @@ class Package(AdCPBaseModel):
             description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Echoed from the create_media_buy request.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    creative_assignments: Annotated[
-        list[creative_assignment.CreativeAssignment] | None,
-        Field(description='Creative assets assigned to this package'),
-    ] = None
-    creative_deadline: Annotated[
-        AwareDatetime | None,
+    format_ids: Annotated[
+        list[format_id.FormatId] | None,
         Field(
-            description="ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
+            description='Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.'
         ),
     ] = None
-    end_time: Annotated[
-        AwareDatetime | None,
+    targeting_overlay: targeting.TargetingOverlay | None = None
+    measurement_terms: Annotated[
+        measurement_terms_1.MeasurementTerms | None,
         Field(
-            description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+            description="Agreed billing measurement and makegood terms for this package. Reflects what was negotiated — may differ from the buyer's proposal or the product's defaults. When present, these terms are binding for the package's duration."
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    format_ids: Annotated[
-        list[format_id.FormatId] | None,
+    performance_standards: Annotated[
+        list[performance_standard.PerformanceStandard] | None,
         Field(
-            description='Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.'
+            description='Agreed performance standards for this package. When any entry specifies a vendor, creatives assigned to this package MUST include corresponding tracker_script or tracker_pixel assets from that vendor.',
+            min_length=1,
         ),
     ] = None
+    creative_assignments: Annotated[
+        list[creative_assignment.CreativeAssignment] | None,
+        Field(description='Creative assets assigned to this package'),
+    ] = None
     format_ids_to_provide: Annotated[
         list[format_id.FormatId] | None,
         Field(description='Format IDs that creative assets will be provided for this package'),
     ] = None
-    impressions: Annotated[
-        float | None, Field(description='Impression goal for this package', ge=0.0)
-    ] = None
     optimization_goals: Annotated[
         list[optimization_goal.OptimizationGoal] | None,
         Field(
@@ -113,33 +122,46 @@ class Package(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    pacing: pacing_1.Pacing | None = None
-    package_id: Annotated[str, Field(description="Seller's unique identifier for the package")]
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+        ),
+    ] = None
     paused: Annotated[
         bool | None,
         Field(
             description='Whether this package is paused by the buyer. Paused packages do not deliver impressions. Defaults to false.'
         ),
     ] = False
-    price_breakdown: Annotated[
-        price_breakdown_1.PriceBreakdown | None,
+    canceled: Annotated[
+        bool | None,
         Field(
-            description="Breakdown of the effective price for this package. On fixed-price packages, echoes the pricing option's breakdown. On auction packages, shows the clearing price breakdown including any commission or settlement terms."
+            description='Whether this package has been canceled. Canceled packages stop delivery and cannot be reactivated. Defaults to false.'
         ),
+    ] = False
+    cancellation: Annotated[
+        Cancellation | None,
+        Field(description='Cancellation metadata. Present only when canceled is true.'),
     ] = None
-    pricing_option_id: Annotated[
+    agency_estimate_number: Annotated[
         str | None,
         Field(
-            description="ID of the selected pricing option from the product's pricing_options array"
+            description="Agency estimate or authorization number for this package. Echoed from the buyer's request. When present on the package, takes precedence over the media buy-level estimate number.",
+            max_length=100,
         ),
     ] = None
-    product_id: Annotated[
-        str | None, Field(description='ID of the product this package is based on')
-    ] = None
-    start_time: Annotated[
+    creative_deadline: Annotated[
         AwareDatetime | None,
         Field(
-            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Sellers SHOULD always include the resolved value in responses, even when inherited."
+            description="ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
         ),
     ] = None
-    targeting_overlay: targeting.TargetingOverlay | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/pagination_request.py b/src/adcp/types/generated_poc/core/pagination_request.py
index 477af5511..2a6c0d6ae 100644
--- a/src/adcp/types/generated_poc/core/pagination_request.py
+++ b/src/adcp/types/generated_poc/core/pagination_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/pagination_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,10 +14,10 @@ class PaginationRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
+    ] = 50
     cursor: Annotated[
         str | None,
         Field(description='Opaque cursor from a previous response to fetch the next page'),
     ] = None
-    max_results: Annotated[
-        int | None, Field(description='Maximum number of items to return per page', ge=1, le=100)
-    ] = 50
diff --git a/src/adcp/types/generated_poc/core/pagination_response.py b/src/adcp/types/generated_poc/core/pagination_response.py
index e0b1ec9f4..43832abf3 100644
--- a/src/adcp/types/generated_poc/core/pagination_response.py
+++ b/src/adcp/types/generated_poc/core/pagination_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/pagination_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,15 +14,15 @@ class PaginationResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    has_more: Annotated[
+        bool, Field(description='Whether more results are available beyond this page')
+    ]
     cursor: Annotated[
         str | None,
         Field(
             description='Opaque cursor to pass in the next request to fetch the next page. Only present when has_more is true.'
         ),
     ] = None
-    has_more: Annotated[
-        bool, Field(description='Whether more results are available beyond this page')
-    ]
     total_count: Annotated[
         int | None,
         Field(
diff --git a/src/adcp/types/generated_poc/core/performance_feedback.py b/src/adcp/types/generated_poc/core/performance_feedback.py
index bd02671a2..07fe82eeb 100644
--- a/src/adcp/types/generated_poc/core/performance_feedback.py
+++ b/src/adcp/types/generated_poc/core/performance_feedback.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/performance_feedback.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,12 +18,12 @@ class MeasurementPeriod(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    end: Annotated[
-        AwareDatetime, Field(description='ISO 8601 end timestamp for measurement period')
-    ]
     start: Annotated[
         AwareDatetime, Field(description='ISO 8601 start timestamp for measurement period')
     ]
+    end: Annotated[
+        AwareDatetime, Field(description='ISO 8601 end timestamp for measurement period')
+    ]
 
 
 class Status(Enum):
@@ -37,34 +37,22 @@ class PerformanceFeedback(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    applied_at: Annotated[
-        AwareDatetime | None,
-        Field(
-            description='ISO 8601 timestamp when feedback was applied to optimization algorithms'
-        ),
-    ] = None
-    creative_id: Annotated[
-        str | None, Field(description='Specific creative asset (if feedback is creative-specific)')
-    ] = None
     feedback_id: Annotated[
         str, Field(description='Unique identifier for this performance feedback submission')
     ]
-    feedback_source: Annotated[
-        feedback_source_1.FeedbackSource, Field(description='Source of the performance data')
-    ]
-    measurement_period: Annotated[
-        MeasurementPeriod, Field(description='Time period for performance measurement')
-    ]
     media_buy_id: Annotated[str, Field(description="Publisher's media buy identifier")]
-    metric_type: Annotated[
-        metric_type_1.MetricType, Field(description='The business metric being measured')
-    ]
     package_id: Annotated[
         str | None,
         Field(
             description='Specific package within the media buy (if feedback is package-specific)'
         ),
     ] = None
+    creative_id: Annotated[
+        str | None, Field(description='Specific creative asset (if feedback is creative-specific)')
+    ] = None
+    measurement_period: Annotated[
+        MeasurementPeriod, Field(description='Time period for performance measurement')
+    ]
     performance_index: Annotated[
         float,
         Field(
@@ -72,7 +60,19 @@ class PerformanceFeedback(AdCPBaseModel):
             ge=0.0,
         ),
     ]
+    metric_type: Annotated[
+        metric_type_1.MetricType, Field(description='The business metric being measured')
+    ]
+    feedback_source: Annotated[
+        feedback_source_1.FeedbackSource, Field(description='Source of the performance data')
+    ]
     status: Annotated[Status, Field(description='Processing status of the performance feedback')]
     submitted_at: Annotated[
         AwareDatetime, Field(description='ISO 8601 timestamp when feedback was submitted')
     ]
+    applied_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='ISO 8601 timestamp when feedback was applied to optimization algorithms'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/placement.py b/src/adcp/types/generated_poc/core/placement.py
index 3f752c10d..713b9e953 100644
--- a/src/adcp/types/generated_poc/core/placement.py
+++ b/src/adcp/types/generated_poc/core/placement.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/placement.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,28 +16,28 @@ class Placement(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    description: Annotated[
-        str | None, Field(description='Detailed description of where and how the placement appears')
-    ] = None
-    format_ids: Annotated[
-        list[format_id.FormatId] | None,
-        Field(
-            description='Format IDs supported by this specific placement. Can include: (1) concrete format_ids (fixed dimensions), (2) template format_ids without parameters (accepts any dimensions/duration), or (3) parameterized format_ids (specific dimension/duration constraints).',
-            min_length=1,
-        ),
-    ] = None
+    placement_id: Annotated[
+        str, Field(description='Unique identifier for the placement within the product')
+    ]
     name: Annotated[
         str,
         Field(
             description="Human-readable name for the placement (e.g., 'Homepage Banner', 'Article Sidebar')"
         ),
     ]
-    placement_id: Annotated[
-        str, Field(description='Unique identifier for the placement within the product')
-    ]
+    description: Annotated[
+        str | None, Field(description='Detailed description of where and how the placement appears')
+    ] = None
     tags: Annotated[
         list[str] | None,
         Field(
             description="Optional tags for grouping placements within a product (e.g., 'homepage', 'native', 'premium'). When the placement_id comes from the publisher registry, these should align with the registry tags unless the product is narrowing scope."
         ),
     ] = None
+    format_ids: Annotated[
+        list[format_id.FormatId] | None,
+        Field(
+            description='Format IDs supported by this specific placement. Can include: (1) concrete format_ids (fixed dimensions), (2) template format_ids without parameters (accepts any dimensions/duration), or (3) parameterized format_ids (specific dimension/duration constraints).',
+            min_length=1,
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/placement_definition.py b/src/adcp/types/generated_poc/core/placement_definition.py
index 65e0e7c2f..a66ddc7e7 100644
--- a/src/adcp/types/generated_poc/core/placement_definition.py
+++ b/src/adcp/types/generated_poc/core/placement_definition.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/placement_definition.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,33 +17,24 @@ class PlacementDefinition(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    collection_ids: Annotated[
-        list[str] | None,
+    placement_id: Annotated[
+        str, Field(description='Stable placement identifier unique within this adagents.json file.')
+    ]
+    name: Annotated[
+        str,
         Field(
-            description='Optional collection IDs in this adagents.json where this placement is valid. Use to narrow a placement to specific content programs carried on the selected properties.',
-            min_length=1,
+            description="Human-readable placement name (e.g., 'Homepage Banner', 'Pre-roll', 'Sponsored Listing Slot 1')."
         ),
-    ] = None
+    ]
     description: Annotated[
         str | None, Field(description='Description of where and how this placement appears.')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    format_ids: Annotated[
-        list[format_id.FormatId] | None,
+    tags: Annotated[
+        list[str] | None,
         Field(
-            description='Optional format IDs supported by this placement across the scoped properties and collections. Lets buyers answer which formats are available on which placements without relying on product-local definitions alone.',
-            min_length=1,
+            description="Tags for grouping and querying placements across properties and products (e.g., 'homepage', 'native', 'premium', 'pre_roll')."
         ),
     ] = None
-    name: Annotated[
-        str,
-        Field(
-            description="Human-readable placement name (e.g., 'Homepage Banner', 'Pre-roll', 'Sponsored Listing Slot 1')."
-        ),
-    ]
-    placement_id: Annotated[
-        str, Field(description='Stable placement identifier unique within this adagents.json file.')
-    ]
     property_ids: Annotated[
         list[property_id.PropertyId] | None,
         Field(
@@ -58,9 +49,18 @@ class PlacementDefinition(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    tags: Annotated[
+    collection_ids: Annotated[
         list[str] | None,
         Field(
-            description="Tags for grouping and querying placements across properties and products (e.g., 'homepage', 'native', 'premium', 'pre_roll')."
+            description='Optional collection IDs in this adagents.json where this placement is valid. Use to narrow a placement to specific content programs carried on the selected properties.',
+            min_length=1,
+        ),
+    ] = None
+    format_ids: Annotated[
+        list[format_id.FormatId] | None,
+        Field(
+            description='Optional format IDs supported by this placement across the scoped properties and collections. Lets buyers answer which formats are available on which placements without relying on product-local definitions alone.',
+            min_length=1,
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/planned_delivery.py b/src/adcp/types/generated_poc/core/planned_delivery.py
index b19fafbbb..46039040f 100644
--- a/src/adcp/types/generated_poc/core/planned_delivery.py
+++ b/src/adcp/types/generated_poc/core/planned_delivery.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/planned_delivery.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -32,6 +32,23 @@ class PlannedDelivery(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    geo: Annotated[Geo | None, Field(description='Geographic targeting the seller will apply.')] = (
+        None
+    )
+    channels: Annotated[
+        list[channels_1.MediaChannel] | None,
+        Field(description='Channels the seller will deliver on.'),
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None, Field(description='Actual flight start the seller will use.')
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None, Field(description='Actual flight end the seller will use.')
+    ] = None
+    frequency_cap: Annotated[
+        frequency_cap_1.FrequencyCap | None,
+        Field(description='Frequency cap the seller will apply.'),
+    ] = None
     audience_summary: Annotated[
         str | None,
         Field(description='Human-readable summary of the audience the seller will target.'),
@@ -43,32 +60,15 @@ class PlannedDelivery(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    channels: Annotated[
-        list[channels_1.MediaChannel] | None,
-        Field(description='Channels the seller will deliver on.'),
+    total_budget: Annotated[
+        float | None, Field(description='Total budget the seller will deliver against.', ge=0.0)
     ] = None
     currency: Annotated[
         str | None,
         Field(description='ISO 4217 currency code for the budget.', pattern='^[A-Z]{3}$'),
     ] = None
-    end_time: Annotated[
-        AwareDatetime | None, Field(description='Actual flight end the seller will use.')
-    ] = None
     enforced_policies: Annotated[
         list[str] | None,
         Field(description='Registry policy IDs the seller will enforce for this delivery.'),
     ] = None
     ext: ext_1.ExtensionObject | None = None
-    frequency_cap: Annotated[
-        frequency_cap_1.FrequencyCap | None,
-        Field(description='Frequency cap the seller will apply.'),
-    ] = None
-    geo: Annotated[Geo | None, Field(description='Geographic targeting the seller will apply.')] = (
-        None
-    )
-    start_time: Annotated[
-        AwareDatetime | None, Field(description='Actual flight start the seller will use.')
-    ] = None
-    total_budget: Annotated[
-        float | None, Field(description='Total budget the seller will deliver against.', ge=0.0)
-    ] = None
diff --git a/src/adcp/types/generated_poc/core/product.py b/src/adcp/types/generated_poc/core/product.py
index aa7d523c2..049f057db 100644
--- a/src/adcp/types/generated_poc/core/product.py
+++ b/src/adcp/types/generated_poc/core/product.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/product.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,7 +14,7 @@
 from ..enums import channels as channels_1
 from ..enums import delivery_type as delivery_type_1
 from ..enums import exclusivity as exclusivity_1
-from ..enums import reach_unit, response_type
+from ..enums import reach_unit, response_type, uid_type
 from . import cancellation_policy as cancellation_policy_1
 from . import collection_selector
 from . import creative_policy as creative_policy_1
@@ -67,7 +67,7 @@ class SupportedTarget(Enum):
     threshold_rate = 'threshold_rate'
 
 
-class SupportedTarget1(Enum):
+class SupportedTarget3(Enum):
     cost_per = 'cost_per'
     per_ad_spend = 'per_ad_spend'
     maximize_value = 'maximize_value'
@@ -85,7 +85,7 @@ class ConversionTracking(AdCPBaseModel):
         ),
     ] = None
     supported_targets: Annotated[
-        list[SupportedTarget1] | None,
+        list[SupportedTarget3] | None,
         Field(
             description='Target kinds available for event goals on this product. Values match target.kind on the optimization goal. cost_per: target cost per conversion event. per_ad_spend: target return on ad spend (requires value_field on event sources). maximize_value: maximize total conversion value without a specific ratio target (requires value_field). Only these target kinds are accepted — goals with unlisted target kinds will be rejected. A goal without a target implicitly maximizes conversion count within budget — no declaration needed for that mode. When omitted, buyers can still set target-less event goals.',
             min_length=1,
@@ -159,24 +159,8 @@ class ProductCardDetailed(AdCPBaseModel):
     ]
 
 
-class Provider(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    agent_url: Annotated[
-        AnyUrl,
-        Field(
-            description="Provider's agent URL from the registry. Canonical identifier for this TMP provider."
-        ),
-    ]
-    context_match: Annotated[
-        bool | None,
-        Field(description='Whether this provider handles context match for this product.'),
-    ] = False
-    identity_match: Annotated[
-        bool | None,
-        Field(description='Whether this provider handles identity match for this product.'),
-    ] = False
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
 
 class MaterialSubmission(AdCPBaseModel):
@@ -232,6 +216,40 @@ class MetricOptimization(AdCPBaseModel):
     ] = None
 
 
+class Provider(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[
+        AnyUrl,
+        Field(
+            description="Provider's agent URL from the registry. Canonical identifier for this TMP provider."
+        ),
+    ]
+    context_match: Annotated[
+        bool | None,
+        Field(description='Whether this provider handles context match for this product.'),
+    ] = False
+    identity_match: Annotated[
+        bool | None,
+        Field(description='Whether this provider handles identity match for this product.'),
+    ] = False
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description="ISO 3166-1 alpha-2 country codes this provider serves for identity match. The router uses this to select the correct regional provider based on the request's country field. Required when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+    uid_types: Annotated[
+        list[uid_type.UidType] | None,
+        Field(
+            description="Identity types this regional provider can resolve. The router filters providers whose uid_types includes the request's uid_type. Required when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+
+
 class TrustedMatch(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
diff --git a/src/adcp/types/generated_poc/core/product_allocation.py b/src/adcp/types/generated_poc/core/product_allocation.py
index 331dc3a58..8c536bf72 100644
--- a/src/adcp/types/generated_poc/core/product_allocation.py
+++ b/src/adcp/types/generated_poc/core/product_allocation.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/product_allocation.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,6 +17,9 @@ class ProductAllocation(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    product_id: Annotated[
+        str, Field(description='ID of the product (must reference a product in the products array)')
+    ]
     allocation_percentage: Annotated[
         float,
         Field(
@@ -25,31 +28,10 @@ class ProductAllocation(AdCPBaseModel):
             le=100.0,
         ),
     ]
-    daypart_targets: Annotated[
-        list[daypart_target.DaypartTarget] | None,
-        Field(
-            description='Recommended time windows for this allocation in spot-plan proposals.',
-            min_length=1,
-        ),
-    ] = None
-    end_time: Annotated[
-        AwareDatetime | None,
-        Field(
-            description='Recommended flight end date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range.'
-        ),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    forecast: Annotated[
-        delivery_forecast.DeliveryForecast | None,
-        Field(description='Forecasted delivery metrics for this allocation'),
-    ] = None
     pricing_option_id: Annotated[
         str | None,
         Field(description="Recommended pricing option ID from the product's pricing_options array"),
     ] = None
-    product_id: Annotated[
-        str, Field(description='ID of the product (must reference a product in the products array)')
-    ]
     rationale: Annotated[
         str | None,
         Field(description='Explanation of why this product and allocation are recommended'),
@@ -58,15 +40,33 @@ class ProductAllocation(AdCPBaseModel):
         int | None,
         Field(description='Optional ordering hint for multi-line-item plans (1-based)', ge=1),
     ] = None
+    tags: Annotated[
+        list[str] | None,
+        Field(
+            description="Categorical tags for this allocation (e.g., 'desktop', 'german', 'mobile') - useful for grouping/filtering allocations by dimension"
+        ),
+    ] = None
     start_time: Annotated[
         AwareDatetime | None,
         Field(
             description='Recommended flight start date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range.'
         ),
     ] = None
-    tags: Annotated[
-        list[str] | None,
+    end_time: Annotated[
+        AwareDatetime | None,
         Field(
-            description="Categorical tags for this allocation (e.g., 'desktop', 'german', 'mobile') - useful for grouping/filtering allocations by dimension"
+            description='Recommended flight end date/time for this allocation in ISO 8601 format. Allows publishers to propose per-flight scheduling within a proposal. When omitted, the allocation applies to the full campaign date range.'
         ),
     ] = None
+    daypart_targets: Annotated[
+        list[daypart_target.DaypartTarget] | None,
+        Field(
+            description='Recommended time windows for this allocation in spot-plan proposals.',
+            min_length=1,
+        ),
+    ] = None
+    forecast: Annotated[
+        delivery_forecast.DeliveryForecast | None,
+        Field(description='Forecasted delivery metrics for this allocation'),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/product_filters.py b/src/adcp/types/generated_poc/core/product_filters.py
index c9edaf423..e454896c0 100644
--- a/src/adcp/types/generated_poc/core/product_filters.py
+++ b/src/adcp/types/generated_poc/core/product_filters.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/product_filters.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,7 +17,7 @@
 from ..enums import exclusivity as exclusivity_1
 from ..enums import geo_level, metro_system, postal_system, response_type
 from ..enums import transport_mode as transport_mode_1
-from . import format_id, media_buy_features
+from . import format_id, media_buy_features, performance_standard
 from . import signal_targeting as signal_targeting_1
 
 
@@ -25,53 +25,95 @@ class BudgetRange(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    min: Annotated[float, Field(description='Minimum budget amount', ge=0.0)]
+    max: Annotated[float | None, Field(description='Maximum budget amount', ge=0.0)] = None
     currency: Annotated[
         str,
         Field(
             description="ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')", pattern='^[A-Z]{3}$'
         ),
     ]
-    max: Annotated[float | None, Field(description='Maximum budget amount', ge=0.0)] = None
-    min: Annotated[float, Field(description='Minimum budget amount', ge=0.0)]
 
 
-class BudgetRange1(AdCPBaseModel):
+class BudgetRange3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    min: Annotated[float | None, Field(description='Minimum budget amount', ge=0.0)] = None
+    max: Annotated[float, Field(description='Maximum budget amount', ge=0.0)]
     currency: Annotated[
         str,
         Field(
             description="ISO 4217 currency code (e.g., 'USD', 'EUR', 'GBP')", pattern='^[A-Z]{3}$'
         ),
     ]
-    max: Annotated[float, Field(description='Maximum budget amount', ge=0.0)]
-    min: Annotated[float | None, Field(description='Minimum budget amount', ge=0.0)] = None
 
 
 class Country(RootModel[str]):
     root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
 
-class Type(Enum):
-    Polygon = 'Polygon'
-    MultiPolygon = 'MultiPolygon'
+class Region(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]+$')]
 
 
-class Geometry(AdCPBaseModel):
+class Metro(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    coordinates: Annotated[list[Any], Field(description='GeoJSON coordinates array')]
-    type: Annotated[Type, Field(description='GeoJSON geometry type')]
+    system: Annotated[
+        metro_system.MetroAreaSystem, Field(description='Metro classification system')
+    ]
+    code: Annotated[
+        str, Field(description="Metro code within the system (e.g., '501' for NYC DMA)")
+    ]
 
 
-class Radius(AdCPBaseModel):
+class Provider(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    agent_url: Annotated[AnyUrl, Field(description="Provider's agent URL from the registry.")]
+    context_match: Annotated[
+        bool | None, Field(description='When true, require this provider to support context match.')
+    ] = None
+    identity_match: Annotated[
+        bool | None,
+        Field(description='When true, require this provider to support identity match.'),
+    ] = None
+
+
+class RequiredGeoTargetingItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    unit: Annotated[distance_unit.DistanceUnit, Field(description='Distance unit')]
-    value: Annotated[float, Field(description='Radius distance', gt=0.0)]
+    level: Annotated[
+        geo_level.GeographicTargetingLevel,
+        Field(description='Geographic targeting level (country, region, metro, postal_area)'),
+    ]
+    system: Annotated[
+        str | None,
+        Field(
+            description="Classification system within the level. Required for metro (e.g., 'nielsen_dma') and postal_area (e.g., 'us_zip'). Not applicable for country/region which use ISO standards."
+        ),
+    ] = None
+
+
+class PostalArea(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    system: Annotated[
+        postal_system.PostalCodeSystem,
+        Field(description="Postal code system (e.g., 'us_zip', 'gb_outward')"),
+    ]
+    values: Annotated[
+        list[str],
+        Field(
+            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            min_length=1,
+        ),
+    ]
 
 
 class Unit(Enum):
@@ -83,20 +125,45 @@ class TravelTime(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    unit: Annotated[Unit, Field(description='Time unit')]
     value: Annotated[float, Field(description='Travel time limit', ge=1.0)]
+    unit: Annotated[Unit, Field(description='Time unit')]
+
+
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance', gt=0.0)]
+    unit: Annotated[distance_unit.DistanceUnit, Field(description='Distance unit')]
+
+
+class Type(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
+
+
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type, Field(description='GeoJSON geometry type')]
+    coordinates: Annotated[list[Any], Field(description='GeoJSON coordinates array')]
 
 
-Geometry2 = Geometry
+class TravelTime14(TravelTime):
+    pass
 
 
-TravelTime2 = TravelTime
+class Geometry14(Geometry):
+    pass
 
 
-Geometry3 = Geometry
+class TravelTime15(TravelTime):
+    pass
 
 
-TravelTime3 = TravelTime
+class Geometry15(Geometry):
+    pass
 
 
 class MatchType(Enum):
@@ -118,141 +185,90 @@ class Keyword(AdCPBaseModel):
     ] = MatchType.broad
 
 
-class Metro(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    code: Annotated[
-        str, Field(description="Metro code within the system (e.g., '501' for NYC DMA)")
-    ]
-    system: Annotated[
-        metro_system.MetroAreaSystem, Field(description='Metro classification system')
-    ]
-
-
-class PostalArea(AdCPBaseModel):
+class TrustedMatch(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    system: Annotated[
-        postal_system.PostalCodeSystem,
-        Field(description="Postal code system (e.g., 'us_zip', 'gb_outward')"),
-    ]
-    values: Annotated[
-        list[str],
+    providers: Annotated[
+        list[Provider] | None,
         Field(
-            description="Postal codes within the system (e.g., ['10001', '10002'] for us_zip)",
+            description='Filter to products with specific TMP providers and match types. Each entry identifies a provider by agent_url and optionally requires specific match capabilities. Products must match at least one entry.',
             min_length=1,
         ),
-    ]
-
-
-class Region(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]+$')]
-
-
-class RequiredGeoTargetingItem(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    level: Annotated[
-        geo_level.GeographicTargetingLevel,
-        Field(description='Geographic targeting level (country, region, metro, postal_area)'),
-    ]
-    system: Annotated[
-        str | None,
+    ] = None
+    response_types: Annotated[
+        list[response_type.TmpResponseType] | None,
         Field(
-            description="Classification system within the level. Required for metro (e.g., 'nielsen_dma') and postal_area (e.g., 'us_zip'). Not applicable for country/region which use ISO standards."
+            description="Filter to products supporting specific TMP response types (e.g., 'activation', 'creative', 'catalog_items'). Products must support at least one of the listed types.",
+            min_length=1,
         ),
     ] = None
 
 
-class Provider(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    agent_url: Annotated[AnyUrl, Field(description="Provider's agent URL from the registry.")]
-    context_match: Annotated[
-        bool | None, Field(description='When true, require this provider to support context match.')
-    ] = None
-    identity_match: Annotated[
-        bool | None,
-        Field(description='When true, require this provider to support identity match.'),
-    ] = None
-
-
 class GeoProximity(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    geometry: Annotated[
-        Geometry | None,
-        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
-    ] = None
-    label: Annotated[
-        str | None,
-        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
-    ] = None
     lat: Annotated[
         float, Field(description='Latitude in decimal degrees (WGS 84)', ge=-90.0, le=90.0)
     ]
     lng: Annotated[
         float, Field(description='Longitude in decimal degrees (WGS 84)', ge=-180.0, le=180.0)
     ]
-    radius: Annotated[Radius | None, Field(description='Simple radius from the point')] = None
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
+    ] = None
+    travel_time: Annotated[
+        TravelTime, Field(description='Travel time limit for isochrone calculation')
+    ]
     transport_mode: Annotated[
         transport_mode_1.TransportMode,
         Field(
             description='Transportation mode for isochrone calculation. Required when travel_time is provided.'
         ),
     ]
-    travel_time: Annotated[
-        TravelTime, Field(description='Travel time limit for isochrone calculation')
-    ]
+    radius: Annotated[Radius | None, Field(description='Simple radius from the point')] = None
+    geometry: Annotated[
+        Geometry | None,
+        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
+    ] = None
 
 
-class GeoProximity2(AdCPBaseModel):
+class GeoProximity15(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    geometry: Annotated[
-        Geometry2 | None,
-        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
-    ] = None
-    label: Annotated[
-        str | None,
-        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
-    ] = None
     lat: Annotated[
         float, Field(description='Latitude in decimal degrees (WGS 84)', ge=-90.0, le=90.0)
     ]
     lng: Annotated[
         float, Field(description='Longitude in decimal degrees (WGS 84)', ge=-180.0, le=180.0)
     ]
-    radius: Annotated[Radius, Field(description='Simple radius from the point')]
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
+    ] = None
+    travel_time: Annotated[
+        TravelTime14 | None, Field(description='Travel time limit for isochrone calculation')
+    ] = None
     transport_mode: Annotated[
         transport_mode_1.TransportMode | None,
         Field(
             description='Transportation mode for isochrone calculation. Required when travel_time is provided.'
         ),
     ] = None
-    travel_time: Annotated[
-        TravelTime2 | None, Field(description='Travel time limit for isochrone calculation')
+    radius: Annotated[Radius, Field(description='Simple radius from the point')]
+    geometry: Annotated[
+        Geometry14 | None,
+        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
     ] = None
 
 
-class GeoProximity3(AdCPBaseModel):
+class GeoProximity16(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    geometry: Annotated[
-        Geometry3,
-        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
-    ]
-    label: Annotated[
-        str | None,
-        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
-    ] = None
     lat: Annotated[
         float | None, Field(description='Latitude in decimal degrees (WGS 84)', ge=-90.0, le=90.0)
     ] = None
@@ -260,94 +276,81 @@ class GeoProximity3(AdCPBaseModel):
         float | None,
         Field(description='Longitude in decimal degrees (WGS 84)', ge=-180.0, le=180.0),
     ] = None
-    radius: Annotated[Radius | None, Field(description='Simple radius from the point')] = None
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable label (e.g., 'Düsseldorf', 'Heathrow Airport')"),
+    ] = None
+    travel_time: Annotated[
+        TravelTime15 | None, Field(description='Travel time limit for isochrone calculation')
+    ] = None
     transport_mode: Annotated[
         transport_mode_1.TransportMode | None,
         Field(
             description='Transportation mode for isochrone calculation. Required when travel_time is provided.'
         ),
     ] = None
-    travel_time: Annotated[
-        TravelTime3 | None, Field(description='Travel time limit for isochrone calculation')
-    ] = None
+    radius: Annotated[Radius | None, Field(description='Simple radius from the point')] = None
+    geometry: Annotated[
+        Geometry15,
+        Field(description='Pre-computed GeoJSON geometry defining the proximity boundary'),
+    ]
 
 
-class TrustedMatch(AdCPBaseModel):
+class ProductFilters(AdCPBaseModel):
     model_config = ConfigDict(
-        extra='forbid',
+        extra='allow',
     )
-    providers: Annotated[
-        list[Provider] | None,
+    delivery_type: delivery_type_1.DeliveryType | None = None
+    exclusivity: Annotated[
+        exclusivity_1.Exclusivity | None,
         Field(
-            description='Filter to products with specific TMP providers and match types. Each entry identifies a provider by agent_url and optionally requires specific match capabilities. Products must match at least one entry.',
-            min_length=1,
+            description="Filter by exclusivity level. Returns products matching the specified exclusivity (e.g., 'exclusive' returns only sole-sponsorship products)."
         ),
     ] = None
-    response_types: Annotated[
-        list[response_type.TmpResponseType] | None,
+    is_fixed_price: Annotated[
+        bool | None,
         Field(
-            description="Filter to products supporting specific TMP response types (e.g., 'activation', 'creative', 'catalog_items'). Products must support at least one of the listed types.",
-            min_length=1,
+            description='Filter by pricing availability: true = products offering fixed pricing (at least one option with fixed_price), false = products offering auction pricing (at least one option without fixed_price). Products with both fixed and auction options match both true and false.'
         ),
     ] = None
-
-
-class ProductFilters(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    budget_range: Annotated[
-        BudgetRange | BudgetRange1 | None,
-        Field(description='Budget range to filter appropriate products'),
+    format_ids: Annotated[
+        list[format_id.FormatId] | None,
+        Field(description='Filter by specific format IDs', min_length=1),
     ] = None
-    channels: Annotated[
-        list[channels_1.MediaChannel] | None,
-        Field(
-            description="Filter by advertising channels (e.g., ['display', 'ctv', 'dooh'])",
-            min_length=1,
-        ),
+    standard_formats_only: Annotated[
+        bool | None, Field(description='Only return products accepting IAB standard formats')
     ] = None
-    countries: Annotated[
-        list[Country] | None,
+    min_exposures: Annotated[
+        int | None,
+        Field(description='Minimum exposures/impressions needed for measurement validity', ge=1),
+    ] = None
+    start_date: Annotated[
+        date_aliased | None,
         Field(
-            description="Filter by country coverage using ISO 3166-1 alpha-2 codes (e.g., ['US', 'CA', 'GB']). Works for all inventory types.",
-            min_length=1,
+            description='Campaign start date (ISO 8601 date format: YYYY-MM-DD) for availability checks'
         ),
     ] = None
-    delivery_type: delivery_type_1.DeliveryType | None = None
     end_date: Annotated[
         date_aliased | None,
         Field(
             description='Campaign end date (ISO 8601 date format: YYYY-MM-DD) for availability checks'
         ),
     ] = None
-    exclusivity: Annotated[
-        exclusivity_1.Exclusivity | None,
-        Field(
-            description="Filter by exclusivity level. Returns products matching the specified exclusivity (e.g., 'exclusive' returns only sole-sponsorship products)."
-        ),
-    ] = None
-    format_ids: Annotated[
-        list[format_id.FormatId] | None,
-        Field(description='Filter by specific format IDs', min_length=1),
+    budget_range: Annotated[
+        BudgetRange | BudgetRange3 | None,
+        Field(description='Budget range to filter appropriate products'),
     ] = None
-    geo_proximity: Annotated[
-        list[GeoProximity | GeoProximity2 | GeoProximity3] | None,
+    countries: Annotated[
+        list[Country] | None,
         Field(
-            description='Filter by proximity to geographic points. Returns products with inventory coverage near these locations. Follows the same format as the targeting overlay — each entry uses exactly one method: travel_time + transport_mode, radius, or geometry. For locally-bound inventory (DOOH, radio), filters to products with coverage in the area. For digital inventory, filters to products from sellers supporting geo_proximity targeting.',
+            description="Filter by country coverage using ISO 3166-1 alpha-2 codes (e.g., ['US', 'CA', 'GB']). Works for all inventory types.",
             min_length=1,
         ),
     ] = None
-    is_fixed_price: Annotated[
-        bool | None,
-        Field(
-            description='Filter by pricing availability: true = products offering fixed pricing (at least one option with fixed_price), false = products offering auction pricing (at least one option without fixed_price). Products with both fixed and auction options match both true and false.'
-        ),
-    ] = None
-    keywords: Annotated[
-        list[Keyword] | None,
+    regions: Annotated[
+        list[Region] | None,
         Field(
-            description='Filter by keyword relevance for search and retail media platforms. Returns products that support keyword targeting for these terms. Allows the sell-side agent to assess keyword availability and recommend appropriate products. Use match_type to indicate the desired precision.',
+            description="Filter by region coverage using ISO 3166-2 codes (e.g., ['US-NY', 'US-CA', 'GB-SCT']). Use for locally-bound inventory (regional OOH, local TV) where products have region-specific coverage.",
             min_length=1,
         ),
     ] = None
@@ -358,21 +361,10 @@ class ProductFilters(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    min_exposures: Annotated[
-        int | None,
-        Field(description='Minimum exposures/impressions needed for measurement validity', ge=1),
-    ] = None
-    postal_areas: Annotated[
-        list[PostalArea] | None,
-        Field(
-            description='Filter by postal area coverage for locally-bound inventory (direct mail, DOOH, local campaigns). Use when products have postal-area-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.',
-            min_length=1,
-        ),
-    ] = None
-    regions: Annotated[
-        list[Region] | None,
+    channels: Annotated[
+        list[channels_1.MediaChannel] | None,
         Field(
-            description="Filter by region coverage using ISO 3166-2 codes (e.g., ['US-NY', 'US-CA', 'GB-SCT']). Use for locally-bound inventory (regional OOH, local TV) where products have region-specific coverage.",
+            description="Filter by advertising channels (e.g., ['display', 'ctv', 'dooh'])",
             min_length=1,
         ),
     ] = None
@@ -380,7 +372,13 @@ class ProductFilters(AdCPBaseModel):
         list[AnyUrl] | None,
         Field(
             deprecated=True,
-            description='Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.'
+            description='Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.',
+        ),
+    ] = None
+    trusted_match: Annotated[
+        TrustedMatch | None,
+        Field(
+            description='Filter products by Trusted Match Protocol capabilities. Only products with matching TMP support are returned.'
         ),
     ] = None
     required_features: Annotated[
@@ -403,18 +401,31 @@ class ProductFilters(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    standard_formats_only: Annotated[
-        bool | None, Field(description='Only return products accepting IAB standard formats')
+    postal_areas: Annotated[
+        list[PostalArea] | None,
+        Field(
+            description='Filter by postal area coverage for locally-bound inventory (direct mail, DOOH, local campaigns). Use when products have postal-area-specific coverage. For digital inventory where products have broad coverage, use required_geo_targeting instead to filter by seller capability.',
+            min_length=1,
+        ),
     ] = None
-    start_date: Annotated[
-        date_aliased | None,
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity15 | GeoProximity16] | None,
         Field(
-            description='Campaign start date (ISO 8601 date format: YYYY-MM-DD) for availability checks'
+            description='Filter by proximity to geographic points. Returns products with inventory coverage near these locations. Follows the same format as the targeting overlay — each entry uses exactly one method: travel_time + transport_mode, radius, or geometry. For locally-bound inventory (DOOH, radio), filters to products with coverage in the area. For digital inventory, filters to products from sellers supporting geo_proximity targeting.',
+            min_length=1,
         ),
     ] = None
-    trusted_match: Annotated[
-        TrustedMatch | None,
+    required_performance_standards: Annotated[
+        list[performance_standard.PerformanceStandard] | None,
         Field(
-            description='Filter products by Trusted Match Protocol capabilities. Only products with matching TMP support are returned.'
+            description="Filter to products that can meet the buyer's performance standard requirements. Each entry specifies a metric, minimum threshold, and optionally a required vendor and standard. Products that cannot meet these thresholds or do not support the specified vendors are excluded. Use this to tell the seller upfront: 'I need DoubleVerify for viewability at 70% MRC.'",
+            min_length=1,
+        ),
+    ] = None
+    keywords: Annotated[
+        list[Keyword] | None,
+        Field(
+            description='Filter by keyword relevance for search and retail media platforms. Returns products that support keyword targeting for these terms. Allows the sell-side agent to assess keyword availability and recommend appropriate products. Use match_type to indicate the desired precision.',
+            min_length=1,
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/property.py b/src/adcp/types/generated_poc/core/property.py
index 77e03a286..5dc8cd43d 100644
--- a/src/adcp/types/generated_poc/core/property.py
+++ b/src/adcp/types/generated_poc/core/property.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/property.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -35,10 +35,6 @@ class Property(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    identifiers: Annotated[
-        list[Identifier], Field(description='Array of identifiers for this property', min_length=1)
-    ]
-    name: Annotated[str, Field(description='Human-readable property name')]
     property_id: Annotated[
         property_id_1.PropertyId | None,
         Field(
@@ -48,10 +44,14 @@ class Property(AdCPBaseModel):
     property_type: Annotated[
         property_type_1.PropertyType, Field(description='Type of advertising property')
     ]
-    publisher_domain: Annotated[
-        str | None,
+    name: Annotated[str, Field(description='Human-readable property name')]
+    identifiers: Annotated[
+        list[Identifier], Field(description='Array of identifiers for this property', min_length=1)
+    ]
+    tags: Annotated[
+        list[property_tag.PropertyTag] | None,
         Field(
-            description='Domain where adagents.json should be checked for authorization validation. Optional in adagents.json (file location implies domain).'
+            description='Tags for categorization and grouping (e.g., network membership, content categories)'
         ),
     ] = None
     supported_channels: Annotated[
@@ -60,9 +60,9 @@ class Property(AdCPBaseModel):
             description="Advertising channels this property supports (e.g., ['display', 'olv', 'social']). Publishers declare which channels their inventory aligns with. Properties may support multiple channels. See the Media Channel Taxonomy for definitions."
         ),
     ] = None
-    tags: Annotated[
-        list[property_tag.PropertyTag] | None,
+    publisher_domain: Annotated[
+        str | None,
         Field(
-            description='Tags for categorization and grouping (e.g., network membership, content categories)'
+            description='Domain where adagents.json should be checked for authorization validation. Optional in adagents.json (file location implies domain).'
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/property_list_ref.py b/src/adcp/types/generated_poc/core/property_list_ref.py
index fdf6fe11f..f978bce47 100644
--- a/src/adcp/types/generated_poc/core/property_list_ref.py
+++ b/src/adcp/types/generated_poc/core/property_list_ref.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/property_list_ref.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,12 +15,12 @@ class PropertyListReference(AdCPBaseModel):
         extra='forbid',
     )
     agent_url: Annotated[AnyUrl, Field(description='URL of the agent managing the property list')]
+    list_id: Annotated[
+        str, Field(description='Identifier for the property list within the agent', min_length=1)
+    ]
     auth_token: Annotated[
         str | None,
         Field(
             description='JWT or other authorization token for accessing the list. Optional if the list is public or caller has implicit access.'
         ),
     ] = None
-    list_id: Annotated[
-        str, Field(description='Identifier for the property list within the agent', min_length=1)
-    ]
diff --git a/src/adcp/types/generated_poc/core/proposal.py b/src/adcp/types/generated_poc/core/proposal.py
index 2aeee67d2..74fde3fd6 100644
--- a/src/adcp/types/generated_poc/core/proposal.py
+++ b/src/adcp/types/generated_poc/core/proposal.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/proposal.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,38 +20,47 @@ class TotalBudgetGuidance(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    currency: Annotated[str | None, Field(description='ISO 4217 currency code')] = None
-    max: Annotated[
-        float | None, Field(description='Maximum budget before diminishing returns', ge=0.0)
-    ] = None
     min: Annotated[float | None, Field(description='Minimum recommended budget', ge=0.0)] = None
     recommended: Annotated[
         float | None, Field(description='Recommended budget for optimal performance', ge=0.0)
     ] = None
+    max: Annotated[
+        float | None, Field(description='Maximum budget before diminishing returns', ge=0.0)
+    ] = None
+    currency: Annotated[str | None, Field(description='ISO 4217 currency code')] = None
 
 
 class Proposal(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    allocations: Annotated[
-        list[product_allocation.ProductAllocation],
+    proposal_id: Annotated[
+        str,
         Field(
-            description='Budget allocations across products. Allocation percentages MUST sum to 100. Publishers are responsible for ensuring the sum equals 100; buyers SHOULD validate this before execution.',
-            min_length=1,
+            description='Unique identifier for this proposal. Used to execute it via create_media_buy.',
+            max_length=255,
         ),
     ]
-    brief_alignment: Annotated[
+    name: Annotated[
+        str, Field(description='Human-readable name for this media plan proposal', max_length=500)
+    ]
+    description: Annotated[
         str | None,
         Field(
-            description='Explanation of how this proposal aligns with the campaign brief',
-            max_length=2000,
+            description='Explanation of the proposal strategy and what it achieves', max_length=2000
         ),
     ] = None
-    description: Annotated[
-        str | None,
+    allocations: Annotated[
+        list[product_allocation.ProductAllocation],
         Field(
-            description='Explanation of the proposal strategy and what it achieves', max_length=2000
+            description='Budget allocations across products. Allocation percentages MUST sum to 100. Publishers are responsible for ensuring the sum equals 100; buyers SHOULD validate this before execution.',
+            min_length=1,
+        ),
+    ]
+    proposal_status: Annotated[
+        proposal_status_1.ProposalStatus | None,
+        Field(
+            description="Lifecycle status of this proposal. When absent, the proposal is ready to buy (backward compatible). 'draft' means indicative pricing — finalize via refine before purchasing. 'committed' means firm pricing with inventory reserved until expires_at."
         ),
     ] = None
     expires_at: Annotated[
@@ -60,35 +69,26 @@ class Proposal(AdCPBaseModel):
             description='When this proposal expires and can no longer be executed. For draft proposals, indicates when indicative pricing becomes stale. For committed proposals, indicates when the inventory hold lapses — the buyer must call create_media_buy before this time.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    forecast: Annotated[
-        delivery_forecast.DeliveryForecast | None,
-        Field(
-            description='Aggregate forecasted delivery metrics for the entire proposal. When both proposal-level and allocation-level forecasts are present, the proposal-level forecast is authoritative for total delivery estimation.'
-        ),
-    ] = None
     insertion_order: Annotated[
         insertion_order_1.InsertionOrder | None,
         Field(
             description='Formal insertion order attached to a committed proposal. Present when the seller requires a signed agreement before the media buy can proceed. The buyer references the io_id in io_acceptance on create_media_buy.'
         ),
     ] = None
-    name: Annotated[
-        str, Field(description='Human-readable name for this media plan proposal', max_length=500)
-    ]
-    proposal_id: Annotated[
-        str,
+    total_budget_guidance: Annotated[
+        TotalBudgetGuidance | None, Field(description='Optional budget guidance for this proposal')
+    ] = None
+    brief_alignment: Annotated[
+        str | None,
         Field(
-            description='Unique identifier for this proposal. Used to execute it via create_media_buy.',
-            max_length=255,
+            description='Explanation of how this proposal aligns with the campaign brief',
+            max_length=2000,
         ),
-    ]
-    proposal_status: Annotated[
-        proposal_status_1.ProposalStatus | None,
+    ] = None
+    forecast: Annotated[
+        delivery_forecast.DeliveryForecast | None,
         Field(
-            description="Lifecycle status of this proposal. When absent, the proposal is ready to buy (backward compatible). 'draft' means indicative pricing — finalize via refine before purchasing. 'committed' means firm pricing with inventory reserved until expires_at."
+            description='Aggregate forecasted delivery metrics for the entire proposal. When both proposal-level and allocation-level forecasts are present, the proposal-level forecast is authoritative for total delivery estimation.'
         ),
     ] = None
-    total_budget_guidance: Annotated[
-        TotalBudgetGuidance | None, Field(description='Optional budget guidance for this proposal')
-    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/protocol_envelope.py b/src/adcp/types/generated_poc/core/protocol_envelope.py
index e6b8d7e96..c04236c2e 100644
--- a/src/adcp/types/generated_poc/core/protocol_envelope.py
+++ b/src/adcp/types/generated_poc/core/protocol_envelope.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/protocol_envelope.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -23,48 +23,54 @@ class ProtocolEnvelope(AdCPBaseModel):
             description='Session/conversation identifier for tracking related operations across multiple task invocations. Managed by the protocol layer to maintain conversational context.'
         ),
     ] = None
-    governance_context: Annotated[
+    task_id: Annotated[
         str | None,
         Field(
-            description="Opaque governance context issued by a governance agent during check_governance. Buyers attach it to media buy requests; sellers persist it and include it on all subsequent governance calls for that media buy's lifecycle. Neither buyers nor sellers interpret this value — only the governance agent that issued it.",
-            max_length=4096,
-            min_length=1,
-            pattern='^[\\x20-\\x7E]+$',
+            description='Unique identifier for tracking asynchronous operations. Present when a task requires extended processing time. Used to query task status and retrieve results when complete.'
         ),
     ] = None
+    status: Annotated[
+        task_status.TaskStatus,
+        Field(
+            description='Current task execution state. Indicates whether the task is completed, in progress (working), submitted for async processing, failed, or requires user input. Managed by the protocol layer.'
+        ),
+    ]
     message: Annotated[
         str | None,
         Field(
             description='Human-readable summary of the task result. Provides natural language explanation of what happened, suitable for display to end users or for AI agent comprehension. Generated by the protocol layer based on the task response.'
         ),
     ] = None
-    payload: Annotated[
-        dict[str, Any],
+    timestamp: Annotated[
+        AwareDatetime | None,
         Field(
-            description='The actual task-specific response data. This is the content defined in individual task response schemas (e.g., get-products-response.json, create-media-buy-response.json). Contains only domain-specific data without protocol-level fields.'
+            description='ISO 8601 timestamp when the response was generated. Useful for debugging, logging, cache validation, and tracking async operation progress.'
         ),
-    ]
+    ] = None
+    replayed: Annotated[
+        bool | None,
+        Field(
+            description='Set to true when this response is a cached replay returned for an idempotency_key that was already processed. Set to false (or omitted) when the request was executed fresh. Buyers use this to distinguish cached replays from new executions — matters for billing reconciliation, audit logs, and any downstream system that assumes exactly-once event semantics. Only present on responses to mutating requests that carry idempotency_key.'
+        ),
+    ] = False
     push_notification_config: Annotated[
         push_notification_config_1.PushNotificationConfig | None,
         Field(
             description='Push notification configuration for async task updates (A2A and REST protocols). Echoed from the request to confirm webhook settings. Specifies URL, authentication scheme (Bearer or HMAC-SHA256), and credentials. MCP uses progress notifications instead of webhooks.'
         ),
     ] = None
-    status: Annotated[
-        task_status.TaskStatus,
-        Field(
-            description='Current task execution state. Indicates whether the task is completed, in progress (working), submitted for async processing, failed, or requires user input. Managed by the protocol layer.'
-        ),
-    ]
-    task_id: Annotated[
+    governance_context: Annotated[
         str | None,
         Field(
-            description='Unique identifier for tracking asynchronous operations. Present when a task requires extended processing time. Used to query task status and retrieve results when complete.'
+            description="Governance context token issued by a governance agent during check_governance. Buyers attach it to governed purchase requests (media buys, rights acquisitions, signal activations, creative services); sellers persist it and include it on all subsequent governance calls for that action's lifecycle.\n\nValue format: in 3.0 governance agents MUST emit a compact JWS per the AdCP JWS profile (see Security — Signed Governance Context). Sellers MAY verify; sellers that do not verify MUST persist and forward the token unchanged. In 3.1 all sellers MUST verify. Non-JWS values from pre-3.0 governance agents are deprecated.\n\nThis is the primary correlation key for audit and reporting across the governance lifecycle.",
+            max_length=4096,
+            min_length=1,
+            pattern='^[\\x20-\\x7E]+$',
         ),
     ] = None
-    timestamp: Annotated[
-        AwareDatetime | None,
+    payload: Annotated[
+        dict[str, Any],
         Field(
-            description='ISO 8601 timestamp when the response was generated. Useful for debugging, logging, cache validation, and tracking async operation progress.'
+            description='The actual task-specific response data. This is the content defined in individual task response schemas (e.g., get-products-response.json, create-media-buy-response.json). Contains only domain-specific data without protocol-level fields.'
         ),
-    ] = None
+    ]
diff --git a/src/adcp/types/generated_poc/core/provenance.py b/src/adcp/types/generated_poc/core/provenance.py
index 32299d2b9..429b8eae1 100644
--- a/src/adcp/types/generated_poc/core/provenance.py
+++ b/src/adcp/types/generated_poc/core/provenance.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/provenance.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -25,27 +25,26 @@ class AiTool(AdCPBaseModel):
             description="Name of the AI tool or model (e.g., 'DALL-E 3', 'Stable Diffusion XL', 'Gemini')"
         ),
     ]
-    provider: Annotated[
+    version: Annotated[
         str | None,
         Field(
-            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
+            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
         ),
     ] = None
-    version: Annotated[
+    provider: Annotated[
         str | None,
         Field(
-            description="Version identifier for the AI tool or model (e.g., '25.1', '0125', '2.1'). For generative models, use the model version rather than the API version."
+            description="Organization that provides the AI tool (e.g., 'OpenAI', 'Stability AI', 'Google')"
         ),
     ] = None
 
 
-class C2pa(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    manifest_url: Annotated[
-        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
-    ]
+class HumanOversight(Enum):
+    none = 'none'
+    prompt_only = 'prompt_only'
+    selected = 'selected'
+    edited = 'edited'
+    directed = 'directed'
 
 
 class Role(Enum):
@@ -67,11 +66,25 @@ class DeclaredBy(AdCPBaseModel):
     role: Annotated[Role, Field(description='Role of the declaring party in the supply chain')]
 
 
+class C2pa(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    manifest_url: Annotated[
+        AnyUrl, Field(description='URL to the C2PA manifest store for this content')
+    ]
+
+
 class RenderGuidance(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    ext: ext_1.ExtensionObject | None = None
+    persistence: Annotated[
+        disclosure_persistence.DisclosurePersistence | None,
+        Field(
+            description='How long the disclosure must persist during content playback or display'
+        ),
+    ] = None
     min_duration_ms: Annotated[
         int | None,
         Field(
@@ -79,12 +92,6 @@ class RenderGuidance(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    persistence: Annotated[
-        disclosure_persistence.DisclosurePersistence | None,
-        Field(
-            description='How long the disclosure must persist during content playback or display'
-        ),
-    ] = None
     positions: Annotated[
         list[disclosure_position.DisclosurePosition] | None,
         Field(
@@ -92,6 +99,7 @@ class RenderGuidance(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class Jurisdiction(AdCPBaseModel):
@@ -101,12 +109,6 @@ class Jurisdiction(AdCPBaseModel):
     country: Annotated[
         str, Field(description="ISO 3166-1 alpha-2 country code (e.g., 'US', 'DE', 'CN')")
     ]
-    label_text: Annotated[
-        str | None,
-        Field(
-            description='Required disclosure label text for this jurisdiction, in the local language'
-        ),
-    ] = None
     region: Annotated[
         str | None,
         Field(description="Sub-national region code (e.g., 'CA' for California, 'BY' for Bavaria)"),
@@ -117,6 +119,12 @@ class Jurisdiction(AdCPBaseModel):
             description="Regulation identifier (e.g., 'eu_ai_act_article_50', 'ca_sb_942', 'cn_deep_synthesis')"
         ),
     ]
+    label_text: Annotated[
+        str | None,
+        Field(
+            description='Required disclosure label text for this jurisdiction, in the local language'
+        ),
+    ] = None
     render_guidance: Annotated[
         RenderGuidance | None,
         Field(
@@ -129,24 +137,16 @@ class Disclosure(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    jurisdictions: Annotated[
-        list[Jurisdiction] | None,
-        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
-    ] = None
     required: Annotated[
         bool,
         Field(
             description='Whether AI disclosure is required for this content based on applicable regulations'
         ),
     ]
-
-
-class HumanOversight(Enum):
-    none = 'none'
-    prompt_only = 'prompt_only'
-    selected = 'selected'
-    edited = 'edited'
-    directed = 'directed'
+    jurisdictions: Annotated[
+        list[Jurisdiction] | None,
+        Field(description='Jurisdictions where disclosure obligations apply', min_length=1),
+    ] = None
 
 
 class Result(Enum):
@@ -160,16 +160,6 @@ class VerificationItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    confidence: Annotated[
-        float | None,
-        Field(
-            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
-        ),
-    ] = None
-    details_url: Annotated[
-        AnyUrl | None, Field(description='URL to the full verification report')
-    ] = None
-    result: Annotated[Result, Field(description='Verification outcome')]
     verified_by: Annotated[
         str,
         Field(
@@ -179,44 +169,58 @@ class VerificationItem(AdCPBaseModel):
     verified_time: Annotated[
         AwareDatetime | None, Field(description='When the verification was performed (ISO 8601)')
     ] = None
+    result: Annotated[Result, Field(description='Verification outcome')]
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Confidence score of the verification result (0.0 to 1.0)', ge=0.0, le=1.0
+        ),
+    ] = None
+    details_url: Annotated[
+        AnyUrl | None, Field(description='URL to the full verification report')
+    ] = None
 
 
 class Provenance(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    digital_source_type: Annotated[
+        digital_source_type_1.DigitalSourceType | None,
+        Field(
+            description='IPTC-aligned classification of AI involvement in producing this content'
+        ),
+    ] = None
     ai_tool: Annotated[
         AiTool | None,
         Field(
             description='AI system used to generate or modify this content. Aligns with IPTC 2025.1 AI metadata fields and C2PA claim_generator.'
         ),
     ] = None
-    c2pa: Annotated[
-        C2pa | None,
+    human_oversight: Annotated[
+        HumanOversight | None,
+        Field(description='Level of human involvement in the AI-assisted creation process'),
+    ] = None
+    declared_by: Annotated[
+        DeclaredBy | None,
         Field(
-            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
+            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
         ),
     ] = None
-    created_time: Annotated[
-        AwareDatetime | None,
-        Field(description='When this content was created or generated (ISO 8601)'),
-    ] = None
     declared_at: Annotated[
         AwareDatetime | None,
         Field(
             description='When this provenance claim was made (ISO 8601). Distinct from created_time, which records when the content itself was produced. A provenance claim may be attached well after content creation, for example when retroactively declaring AI involvement for regulatory compliance.'
         ),
     ] = None
-    declared_by: Annotated[
-        DeclaredBy | None,
-        Field(
-            description='Party declaring this provenance. Identifies who attached the provenance claim, enabling receiving parties to assess trust.'
-        ),
+    created_time: Annotated[
+        AwareDatetime | None,
+        Field(description='When this content was created or generated (ISO 8601)'),
     ] = None
-    digital_source_type: Annotated[
-        digital_source_type_1.DigitalSourceType | None,
+    c2pa: Annotated[
+        C2pa | None,
         Field(
-            description='IPTC-aligned classification of AI involvement in producing this content'
+            description='C2PA Content Credentials reference. Links to the cryptographic provenance manifest for this content. Because file-level C2PA bindings break during ad-tech transcoding, this URL reference preserves the chain of provenance through the supply chain.'
         ),
     ] = None
     disclosure: Annotated[
@@ -225,11 +229,6 @@ class Provenance(AdCPBaseModel):
             description='Regulatory disclosure requirements for this content. Indicates whether AI disclosure is required and under which jurisdictions.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    human_oversight: Annotated[
-        HumanOversight | None,
-        Field(description='Level of human involvement in the AI-assisted creation process'),
-    ] = None
     verification: Annotated[
         list[VerificationItem] | None,
         Field(
@@ -237,3 +236,4 @@ class Provenance(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/publisher_property_selector.py b/src/adcp/types/generated_poc/core/publisher_property_selector.py
index 6018e54d5..13059eaeb 100644
--- a/src/adcp/types/generated_poc/core/publisher_property_selector.py
+++ b/src/adcp/types/generated_poc/core/publisher_property_selector.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/publisher_property_selector.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -35,10 +35,6 @@ class PublisherPropertySelector2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    property_ids: Annotated[
-        list[property_id.PropertyId],
-        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
-    ]
     publisher_domain: Annotated[
         str,
         Field(
@@ -50,19 +46,16 @@ class PublisherPropertySelector2(AdCPBaseModel):
         Literal['by_id'],
         Field(description='Discriminator indicating selection by specific property IDs'),
     ]
+    property_ids: Annotated[
+        list[property_id.PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    ]
 
 
 class PublisherPropertySelector3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    property_tags: Annotated[
-        list[property_tag.PropertyTag],
-        Field(
-            description="Property tags from the publisher's adagents.json. Selector covers all properties with these tags",
-            min_length=1,
-        ),
-    ]
     publisher_domain: Annotated[
         str,
         Field(
@@ -73,6 +66,13 @@ class PublisherPropertySelector3(AdCPBaseModel):
     selection_type: Annotated[
         Literal['by_tag'], Field(description='Discriminator indicating selection by property tags')
     ]
+    property_tags: Annotated[
+        list[property_tag.PropertyTag],
+        Field(
+            description="Property tags from the publisher's adagents.json. Selector covers all properties with these tags",
+            min_length=1,
+        ),
+    ]
 
 
 class PublisherPropertySelector(
diff --git a/src/adcp/types/generated_poc/core/push_notification_config.py b/src/adcp/types/generated_poc/core/push_notification_config.py
index 2fb532f67..fedb26a8a 100644
--- a/src/adcp/types/generated_poc/core/push_notification_config.py
+++ b/src/adcp/types/generated_poc/core/push_notification_config.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/push_notification_config.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,13 +16,6 @@ class Authentication(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    credentials: Annotated[
-        str,
-        Field(
-            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
-            min_length=32,
-        ),
-    ]
     schemes: Annotated[
         list[auth_scheme.AuthenticationScheme],
         Field(
@@ -31,13 +24,17 @@ class Authentication(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    credentials: Annotated[
+        str,
+        Field(
+            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
+            min_length=32,
+        ),
+    ]
 
 
 class PushNotificationConfig(AdCPBaseModel):
-    authentication: Annotated[
-        Authentication,
-        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
-    ]
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for task status notifications')]
     token: Annotated[
         str | None,
         Field(
@@ -45,4 +42,7 @@ class PushNotificationConfig(AdCPBaseModel):
             min_length=16,
         ),
     ] = None
-    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for task status notifications')]
+    authentication: Annotated[
+        Authentication,
+        Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
+    ]
diff --git a/src/adcp/types/generated_poc/core/real_estate_item.py b/src/adcp/types/generated_poc/core/real_estate_item.py
index be7717756..cec788cf7 100644
--- a/src/adcp/types/generated_poc/core/real_estate_item.py
+++ b/src/adcp/types/generated_poc/core/real_estate_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/real_estate_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,13 +19,27 @@ class Address(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    street: Annotated[str | None, Field(description='Street address.')] = None
     city: Annotated[str | None, Field(description='City name.')] = None
+    region: Annotated[str | None, Field(description='State, province, or region.')] = None
+    postal_code: Annotated[str | None, Field(description='Postal or ZIP code.')] = None
     country: Annotated[
         str | None, Field(description='ISO 3166-1 alpha-2 country code.', pattern='^[A-Z]{2}$')
     ] = None
-    postal_code: Annotated[str | None, Field(description='Postal or ZIP code.')] = None
-    region: Annotated[str | None, Field(description='State, province, or region.')] = None
-    street: Annotated[str | None, Field(description='Street address.')] = None
+
+
+class PropertyType(Enum):
+    house = 'house'
+    apartment = 'apartment'
+    condo = 'condo'
+    townhouse = 'townhouse'
+    land = 'land'
+    commercial = 'commercial'
+
+
+class ListingType(Enum):
+    for_sale = 'for_sale'
+    for_rent = 'for_rent'
 
 
 class Unit(Enum):
@@ -37,13 +51,8 @@ class Area(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    unit: Annotated[Unit, Field(description='Area unit.')]
     value: Annotated[float, Field(description='Area value.', ge=0.0)]
-
-
-class ListingType(Enum):
-    for_sale = 'for_sale'
-    for_rent = 'for_rent'
+    unit: Annotated[Unit, Field(description='Area unit.')]
 
 
 class Location(AdCPBaseModel):
@@ -58,51 +67,39 @@ class Location(AdCPBaseModel):
     ]
 
 
-class PropertyType(Enum):
-    house = 'house'
-    apartment = 'apartment'
-    condo = 'condo'
-    townhouse = 'townhouse'
-    land = 'land'
-    commercial = 'commercial'
-
-
 class RealEstateItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    listing_id: Annotated[str, Field(description='Unique identifier for this property listing.')]
+    title: Annotated[
+        str, Field(description="Listing title (e.g., 'Spacious 3BR Apartment in Jordaan').")
+    ]
     address: Annotated[Address, Field(description='Property address.')]
-    area: Annotated[Area | None, Field(description='Property size.')] = None
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
-        Field(
-            description="Typed creative asset pools for this property listing. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior/interior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-            min_length=1,
-        ),
+    price: Annotated[
+        price_1.Price | None,
+        Field(description="Property price or rental rate. Use period 'month' for rentals."),
     ] = None
+    property_type: Annotated[PropertyType | None, Field(description='Type of property.')] = None
+    listing_type: Annotated[
+        ListingType | None, Field(description='Whether the property is for sale or rent.')
+    ] = None
+    bedrooms: Annotated[int | None, Field(description='Number of bedrooms.', ge=0)] = None
     bathrooms: Annotated[
         float | None,
         Field(
             description='Number of bathrooms (e.g., 2.5 for two full and one half bath).', ge=0.0
         ),
     ] = None
-    bedrooms: Annotated[int | None, Field(description='Number of bedrooms.', ge=0)] = None
+    area: Annotated[Area | None, Field(description='Property size.')] = None
     description: Annotated[str | None, Field(description='Property description.')] = None
-    ext: ext_1.ExtensionObject | None = None
-    image_url: Annotated[AnyUrl | None, Field(description='Primary property image URL.')] = None
-    listing_id: Annotated[str, Field(description='Unique identifier for this property listing.')]
-    listing_type: Annotated[
-        ListingType | None, Field(description='Whether the property is for sale or rent.')
-    ] = None
     location: Annotated[
         Location | None, Field(description='Geographic coordinates of the property.')
     ] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Primary property image URL.')] = None
+    url: Annotated[AnyUrl | None, Field(description='Listing page URL.')] = None
     neighborhood: Annotated[str | None, Field(description='Neighborhood or area name.')] = None
-    price: Annotated[
-        price_1.Price | None,
-        Field(description="Property price or rental rate. Use period 'month' for rentals."),
-    ] = None
-    property_type: Annotated[PropertyType | None, Field(description='Type of property.')] = None
+    year_built: Annotated[int | None, Field(description='Year the property was built.')] = None
     tags: Annotated[
         list[str] | None,
         Field(
@@ -110,8 +107,11 @@ class RealEstateItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    title: Annotated[
-        str, Field(description="Listing title (e.g., 'Spacious 3BR Apartment in Jordaan').")
-    ]
-    url: Annotated[AnyUrl | None, Field(description='Listing page URL.')] = None
-    year_built: Annotated[int | None, Field(description='Year the property was built.')] = None
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this property listing. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior/interior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+            min_length=1,
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/reference_asset.py b/src/adcp/types/generated_poc/core/reference_asset.py
index 148f45586..6789aeb54 100644
--- a/src/adcp/types/generated_poc/core/reference_asset.py
+++ b/src/adcp/types/generated_poc/core/reference_asset.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/reference_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -25,18 +25,18 @@ class ReferenceAsset(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    description: Annotated[
-        str | None,
-        Field(
-            description='Human-readable description of the asset and how it should inform creative generation'
-        ),
-    ] = None
+    url: Annotated[
+        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
+    ]
     role: Annotated[
         Role,
         Field(
             description='How the creative agent should use this asset. style_reference: match the visual style; product_shot: include this product; mood_board: overall look and feel; example_creative: example of a similar execution; logo: logo to use; strategy_doc: strategy or planning document for context; storyboard: sequential visual direction for video or multi-scene creative'
         ),
     ]
-    url: Annotated[
-        AnyUrl, Field(description='URL to the reference asset (image, video, or document)')
-    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description='Human-readable description of the asset and how it should inform creative generation'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/reporting_capabilities.py b/src/adcp/types/generated_poc/core/reporting_capabilities.py
index d86b03dbc..33f776282 100644
--- a/src/adcp/types/generated_poc/core/reporting_capabilities.py
+++ b/src/adcp/types/generated_poc/core/reporting_capabilities.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/reporting_capabilities.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,7 +11,7 @@
 from pydantic import ConfigDict, Field
 
 from ..enums import available_metric, reporting_frequency
-from . import geo_breakdown_support
+from . import geo_breakdown_support, measurement_window
 
 
 class DateRangeSupport(Enum):
@@ -23,26 +23,10 @@ class ReportingCapabilities(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    available_metrics: Annotated[
-        list[available_metric.AvailableMetric],
-        Field(
-            description="Metrics available in reporting. Impressions and spend are always implicitly included. When a creative format declares reported_metrics, buyers receive the intersection of these product-level metrics and the format's reported_metrics.",
-            examples=[
-                ['impressions', 'spend', 'clicks', 'video_completions'],
-                ['impressions', 'spend', 'conversions'],
-            ],
-        ),
-    ]
     available_reporting_frequencies: Annotated[
         list[reporting_frequency.ReportingFrequency],
         Field(description='Supported reporting frequency options', min_length=1),
     ]
-    date_range_support: Annotated[
-        DateRangeSupport,
-        Field(
-            description="Whether delivery data can be filtered to arbitrary date ranges. 'date_range' means the platform supports start_date/end_date parameters. 'lifetime_only' means the platform returns campaign lifetime totals and date range parameters are not accepted."
-        ),
-    ]
     expected_delay_minutes: Annotated[
         int,
         Field(
@@ -51,22 +35,43 @@ class ReportingCapabilities(AdCPBaseModel):
             ge=0,
         ),
     ]
-    supports_audience_breakdown: Annotated[
-        bool | None,
+    timezone: Annotated[
+        str,
         Field(
-            description='Whether this product supports audience segment breakdowns in delivery reporting (by_audience within by_package)'
+            description="Timezone for reporting periods. Use 'UTC' or IANA timezone (e.g., 'America/New_York'). Critical for daily/monthly frequency alignment.",
+            examples=['UTC', 'America/New_York', 'Europe/London', 'America/Los_Angeles'],
         ),
-    ] = None
+    ]
+    supports_webhooks: Annotated[
+        bool,
+        Field(description='Whether this product supports webhook-based reporting notifications'),
+    ]
+    available_metrics: Annotated[
+        list[available_metric.AvailableMetric],
+        Field(
+            description="Metrics available in reporting. Impressions and spend are always implicitly included. When a creative format declares reported_metrics, buyers receive the intersection of these product-level metrics and the format's reported_metrics.",
+            examples=[
+                ['impressions', 'spend', 'clicks', 'video_completions'],
+                ['impressions', 'spend', 'conversions'],
+            ],
+        ),
+    ]
     supports_creative_breakdown: Annotated[
         bool | None,
         Field(
             description='Whether this product supports creative-level metric breakdowns in delivery reporting (by_creative within by_package)'
         ),
     ] = None
-    supports_device_platform_breakdown: Annotated[
+    supports_keyword_breakdown: Annotated[
         bool | None,
         Field(
-            description='Whether this product supports device platform breakdowns in delivery reporting (by_device_platform within by_package)'
+            description='Whether this product supports keyword-level metric breakdowns in delivery reporting (by_keyword within by_package)'
+        ),
+    ] = None
+    supports_geo_breakdown: Annotated[
+        geo_breakdown_support.GeographicBreakdownSupport | None,
+        Field(
+            description='Geographic breakdown support for this product. Declares which geo levels and systems are available for by_geo reporting within by_package.'
         ),
     ] = None
     supports_device_type_breakdown: Annotated[
@@ -75,16 +80,16 @@ class ReportingCapabilities(AdCPBaseModel):
             description='Whether this product supports device type breakdowns in delivery reporting (by_device_type within by_package)'
         ),
     ] = None
-    supports_geo_breakdown: Annotated[
-        geo_breakdown_support.GeographicBreakdownSupport | None,
+    supports_device_platform_breakdown: Annotated[
+        bool | None,
         Field(
-            description='Geographic breakdown support for this product. Declares which geo levels and systems are available for by_geo reporting within by_package.'
+            description='Whether this product supports device platform breakdowns in delivery reporting (by_device_platform within by_package)'
         ),
     ] = None
-    supports_keyword_breakdown: Annotated[
+    supports_audience_breakdown: Annotated[
         bool | None,
         Field(
-            description='Whether this product supports keyword-level metric breakdowns in delivery reporting (by_keyword within by_package)'
+            description='Whether this product supports audience segment breakdowns in delivery reporting (by_audience within by_package)'
         ),
     ] = None
     supports_placement_breakdown: Annotated[
@@ -93,14 +98,16 @@ class ReportingCapabilities(AdCPBaseModel):
             description='Whether this product supports placement breakdowns in delivery reporting (by_placement within by_package)'
         ),
     ] = None
-    supports_webhooks: Annotated[
-        bool,
-        Field(description='Whether this product supports webhook-based reporting notifications'),
-    ]
-    timezone: Annotated[
-        str,
+    date_range_support: Annotated[
+        DateRangeSupport,
         Field(
-            description="Timezone for reporting periods. Use 'UTC' or IANA timezone (e.g., 'America/New_York'). Critical for daily/monthly frequency alignment.",
-            examples=['UTC', 'America/New_York', 'Europe/London', 'America/Los_Angeles'],
+            description="Whether delivery data can be filtered to arbitrary date ranges. 'date_range' means the platform supports start_date/end_date parameters. 'lifetime_only' means the platform returns campaign lifetime totals and date range parameters are not accepted."
         ),
     ]
+    measurement_windows: Annotated[
+        list[measurement_window.MeasurementWindow] | None,
+        Field(
+            description='Measurement maturation stages available for this product. Used by any channel where billing-grade data is produced in phases rather than arriving final on day one. Examples: broadcast/linear TV (Live → C3 → C7 DVR accumulation), DOOH (tentative plays → post-IVT/fraud-check final), digital with IVT filtering (raw → GIVT filtered → SIVT filtered), podcast (7-day downloads → 30-day downloads). Each window defines an accumulation period and expected data availability. When present, delivery reports reference a specific window_id. Sellers whose data is final on first delivery typically omit this.',
+            min_length=1,
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/reporting_webhook.py b/src/adcp/types/generated_poc/core/reporting_webhook.py
index a2e5eab36..e13c9b48a 100644
--- a/src/adcp/types/generated_poc/core/reporting_webhook.py
+++ b/src/adcp/types/generated_poc/core/reporting_webhook.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/reporting_webhook.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,13 +17,6 @@ class Authentication(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    credentials: Annotated[
-        str,
-        Field(
-            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
-            min_length=32,
-        ),
-    ]
     schemes: Annotated[
         list[auth_scheme.AuthenticationScheme],
         Field(
@@ -32,6 +25,13 @@ class Authentication(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    credentials: Annotated[
+        str,
+        Field(
+            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
+            min_length=32,
+        ),
+    ]
 
 
 class ReportingFrequency(Enum):
@@ -44,6 +44,14 @@ class ReportingWebhook(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for reporting notifications')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
     authentication: Annotated[
         Authentication,
         Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
@@ -60,11 +68,3 @@ class ReportingWebhook(AdCPBaseModel):
             description="Optional list of metrics to include in webhook notifications. If omitted, all available metrics are included. Must be subset of product's available_metrics."
         ),
     ] = None
-    token: Annotated[
-        str | None,
-        Field(
-            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
-            min_length=16,
-        ),
-    ] = None
-    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for reporting notifications')]
diff --git a/src/adcp/types/generated_poc/core/requirements/audio_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/audio_asset_requirements.py
index e2efddd35..72cc26563 100644
--- a/src/adcp/types/generated_poc/core/requirements/audio_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/audio_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/audio_asset_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,11 +11,6 @@
 from pydantic import ConfigDict, Field, RootModel
 
 
-class Channel(Enum):
-    mono = 'mono'
-    stereo = 'stereo'
-
-
 class Format(Enum):
     mp3 = 'mp3'
     aac = 'aac'
@@ -28,30 +23,35 @@ class SampleRate(RootModel[int]):
     root: Annotated[int, Field(ge=1)]
 
 
+class Channel(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+
+
 class AudioAssetRequirements(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    channels: Annotated[
-        list[Channel] | None, Field(description='Accepted audio channel configurations')
-    ] = None
-    formats: Annotated[list[Format] | None, Field(description='Accepted audio file formats')] = None
-    max_bitrate_kbps: Annotated[
-        int | None, Field(description='Maximum audio bitrate in kilobits per second', ge=1)
+    min_duration_ms: Annotated[
+        int | None, Field(description='Minimum duration in milliseconds', ge=1)
     ] = None
     max_duration_ms: Annotated[
         int | None, Field(description='Maximum duration in milliseconds', ge=1)
     ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted audio file formats')] = None
     max_file_size_kb: Annotated[
         int | None, Field(description='Maximum file size in kilobytes', ge=1)
     ] = None
-    min_bitrate_kbps: Annotated[
-        int | None, Field(description='Minimum audio bitrate in kilobits per second', ge=1)
-    ] = None
-    min_duration_ms: Annotated[
-        int | None, Field(description='Minimum duration in milliseconds', ge=1)
-    ] = None
     sample_rates: Annotated[
         list[SampleRate] | None,
         Field(description='Accepted sample rates in Hz (e.g., [44100, 48000])'),
     ] = None
+    channels: Annotated[
+        list[Channel] | None, Field(description='Accepted audio channel configurations')
+    ] = None
+    min_bitrate_kbps: Annotated[
+        int | None, Field(description='Minimum audio bitrate in kilobits per second', ge=1)
+    ] = None
+    max_bitrate_kbps: Annotated[
+        int | None, Field(description='Maximum audio bitrate in kilobits per second', ge=1)
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/requirements/catalog_field_binding.py b/src/adcp/types/generated_poc/core/requirements/catalog_field_binding.py
index 0790c07c9..8e327d6cc 100644
--- a/src/adcp/types/generated_poc/core/requirements/catalog_field_binding.py
+++ b/src/adcp/types/generated_poc/core/requirements/catalog_field_binding.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/catalog_field_binding.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -12,62 +12,61 @@
 from .. import ext as ext_1
 
 
-class AssetPoolBinding(AdCPBaseModel):
+class ScalarBinding(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_group_id: Annotated[
+    kind: Literal['scalar']
+    asset_id: Annotated[
         str,
         Field(
-            description="The asset_group_id on the catalog item's assets array to pull from (e.g., 'images_landscape', 'images_vertical', 'logo')."
+            description="The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
         ),
     ]
-    asset_id: Annotated[
+    catalog_field: Annotated[
         str,
         Field(
-            description="The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
+            description="Dot-notation path to the field on the catalog item (e.g., 'name', 'price.amount', 'location.city')."
         ),
     ]
     ext: ext_1.ExtensionObject | None = None
-    kind: Literal['asset_pool']
 
 
-class ScalarBinding(AdCPBaseModel):
+class AssetPoolBinding(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    kind: Literal['asset_pool']
     asset_id: Annotated[
         str,
         Field(
             description="The asset_id from the format's assets array. Identifies which individual template slot this binding applies to."
         ),
     ]
-    catalog_field: Annotated[
+    asset_group_id: Annotated[
         str,
         Field(
-            description="Dot-notation path to the field on the catalog item (e.g., 'name', 'price.amount', 'location.city')."
+            description="The asset_group_id on the catalog item's assets array to pull from (e.g., 'images_landscape', 'images_vertical', 'logo')."
         ),
     ]
     ext: ext_1.ExtensionObject | None = None
-    kind: Literal['scalar']
 
 
 class CatalogFieldBinding1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    kind: Literal['catalog_group']
+    format_group_id: Annotated[
+        str,
+        Field(description="The asset_group_id of a repeatable_group in the format's assets array."),
+    ]
     catalog_item: Annotated[
         Literal[True],
         Field(
             description="Each repetition of the format's repeatable_group maps to one item from the catalog."
         ),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    format_group_id: Annotated[
-        str,
-        Field(description="The asset_group_id of a repeatable_group in the format's assets array."),
-    ]
-    kind: Literal['catalog_group']
     per_item_bindings: Annotated[
         list[ScalarBinding | AssetPoolBinding] | None,
         Field(
@@ -75,6 +74,7 @@ class CatalogFieldBinding1(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class CatalogFieldBinding(RootModel[ScalarBinding | AssetPoolBinding | CatalogFieldBinding1]):
@@ -84,53 +84,53 @@ class CatalogFieldBinding(RootModel[ScalarBinding | AssetPoolBinding | CatalogFi
             description="Maps a format template slot to a catalog item field or typed asset pool. The 'kind' field identifies the binding variant. All bindings are optional — agents can still infer mappings without them.",
             examples=[
                 {
-                    'data': {'asset_id': 'headline', 'catalog_field': 'name', 'kind': 'scalar'},
                     'description': 'Scalar binding — hotel name to headline slot',
+                    'data': {'kind': 'scalar', 'asset_id': 'headline', 'catalog_field': 'name'},
                 },
                 {
+                    'description': 'Scalar binding — nested field (nightly rate)',
                     'data': {
+                        'kind': 'scalar',
                         'asset_id': 'price_badge',
                         'catalog_field': 'price.amount',
-                        'kind': 'scalar',
                     },
-                    'description': 'Scalar binding — nested field (nightly rate)',
                 },
                 {
+                    'description': 'Asset pool binding — hero image from landscape pool',
                     'data': {
-                        'asset_group_id': 'images_landscape',
-                        'asset_id': 'hero_image',
                         'kind': 'asset_pool',
+                        'asset_id': 'hero_image',
+                        'asset_group_id': 'images_landscape',
                     },
-                    'description': 'Asset pool binding — hero image from landscape pool',
                 },
                 {
+                    'description': 'Asset pool binding — Snap vertical background from vertical pool',
                     'data': {
-                        'asset_group_id': 'images_vertical',
-                        'asset_id': 'snap_background',
                         'kind': 'asset_pool',
+                        'asset_id': 'snap_background',
+                        'asset_group_id': 'images_vertical',
                     },
-                    'description': 'Asset pool binding — Snap vertical background from vertical pool',
                 },
                 {
+                    'description': 'Catalog group binding — carousel where each slide is one hotel',
                     'data': {
-                        'catalog_item': True,
-                        'format_group_id': 'slide',
                         'kind': 'catalog_group',
+                        'format_group_id': 'slide',
+                        'catalog_item': True,
                         'per_item_bindings': [
-                            {'asset_id': 'title', 'catalog_field': 'name', 'kind': 'scalar'},
+                            {'kind': 'scalar', 'asset_id': 'title', 'catalog_field': 'name'},
                             {
+                                'kind': 'scalar',
                                 'asset_id': 'price',
                                 'catalog_field': 'price.amount',
-                                'kind': 'scalar',
                             },
                             {
-                                'asset_group_id': 'images_landscape',
-                                'asset_id': 'image',
                                 'kind': 'asset_pool',
+                                'asset_id': 'image',
+                                'asset_group_id': 'images_landscape',
                             },
                         ],
                     },
-                    'description': 'Catalog group binding — carousel where each slide is one hotel',
                 },
             ],
             title='Catalog Field Binding',
diff --git a/src/adcp/types/generated_poc/core/requirements/catalog_requirements.py b/src/adcp/types/generated_poc/core/requirements/catalog_requirements.py
index a1d231c54..1ed4a9395 100644
--- a/src/adcp/types/generated_poc/core/requirements/catalog_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/catalog_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/catalog_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -22,18 +22,17 @@ class CatalogRequirements(AdCPBaseModel):
         catalog_type_1.CatalogType,
         Field(description='The catalog type this requirement applies to'),
     ]
-    feed_formats: Annotated[
-        list[feed_format.FeedFormat] | None,
+    required: Annotated[
+        bool | None,
         Field(
-            description='Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.',
-            min_length=1,
+            description='Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.'
         ),
-    ] = None
-    field_bindings: Annotated[
-        list[catalog_field_binding.CatalogFieldBinding] | None,
+    ] = True
+    min_items: Annotated[
+        int | None,
         Field(
-            description='Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional — creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id → catalog_field), asset pools (asset_id → asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.',
-            min_length=1,
+            description='Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)',
+            ge=1,
         ),
     ] = None
     max_items: Annotated[
@@ -43,11 +42,18 @@ class CatalogRequirements(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    min_items: Annotated[
-        int | None,
+    required_fields: Annotated[
+        list[str] | None,
         Field(
-            description='Minimum number of items the catalog must contain for this format to render properly (e.g., a carousel might require at least 3 products)',
-            ge=1,
+            description="Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
+            min_length=1,
+        ),
+    ] = None
+    feed_formats: Annotated[
+        list[feed_format.FeedFormat] | None,
+        Field(
+            description='Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.',
+            min_length=1,
         ),
     ] = None
     offering_asset_constraints: Annotated[
@@ -57,16 +63,10 @@ class CatalogRequirements(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    required: Annotated[
-        bool | None,
-        Field(
-            description='Whether this catalog type must be present. When true, creatives using this format must reference a synced catalog of this type.'
-        ),
-    ] = True
-    required_fields: Annotated[
-        list[str] | None,
+    field_bindings: Annotated[
+        list[catalog_field_binding.CatalogFieldBinding] | None,
         Field(
-            description="Fields that must be present and non-empty on every item in the catalog. Field names are catalog-type-specific (e.g., 'title', 'price', 'image_url' for product catalogs; 'store_id', 'quantity' for inventory feeds).",
+            description='Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional — creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id → catalog_field), asset pools (asset_id → asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.',
             min_length=1,
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py
index 43562f738..740a486c3 100644
--- a/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/html_asset_requirements.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,7 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field, constr
+from pydantic import ConfigDict, Field
 
 
 class Sandbox(Enum):
@@ -22,29 +22,24 @@ class HtmlAssetRequirements(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    allowed_external_domains: Annotated[
-        list[
-            constr(
-                pattern=r'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]{0,61}[A-Za-z0-9])$'
-            )
-        ]
-        | None,
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes for the HTML asset', ge=1)
+    ] = None
+    sandbox: Annotated[
+        Sandbox | None,
         Field(
-            description='List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true.'
+            description="Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
         ),
-    ] = None
+    ] = Sandbox.none
     external_resources_allowed: Annotated[
         bool | None,
         Field(
             description='Whether the HTML creative can load external resources (scripts, images, fonts, etc.). When false, all resources must be inlined or bundled.'
         ),
     ] = None
-    max_file_size_kb: Annotated[
-        int | None, Field(description='Maximum file size in kilobytes for the HTML asset', ge=1)
-    ] = None
-    sandbox: Annotated[
-        Sandbox | None,
+    allowed_external_domains: Annotated[
+        list[str] | None,
         Field(
-            description="Sandbox environment the HTML must be compatible with. 'none' = direct DOM access, 'iframe' = standard iframe isolation, 'safeframe' = IAB SafeFrame container, 'fencedframe' = Privacy Sandbox fenced frame"
+            description='List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true.'
         ),
-    ] = Sandbox.none
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py
index eb2538d3d..2659ff5e5 100644
--- a/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/image_asset_requirements.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -13,6 +13,19 @@
 from ...enums import dimension_unit
 
 
+class Format(Enum):
+    jpg = 'jpg'
+    jpeg = 'jpeg'
+    png = 'png'
+    gif = 'gif'
+    webp = 'webp'
+    svg = 'svg'
+    avif = 'avif'
+    tiff = 'tiff'
+    pdf = 'pdf'
+    eps = 'eps'
+
+
 class Bleed(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
@@ -24,10 +37,10 @@ class Bleed1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    top: Annotated[float, Field(ge=0.0)]
+    right: Annotated[float, Field(ge=0.0)]
     bottom: Annotated[float, Field(ge=0.0)]
     left: Annotated[float, Field(ge=0.0)]
-    right: Annotated[float, Field(ge=0.0)]
-    top: Annotated[float, Field(ge=0.0)]
 
 
 class ColorSpace(Enum):
@@ -36,53 +49,31 @@ class ColorSpace(Enum):
     grayscale = 'grayscale'
 
 
-class Format(Enum):
-    jpg = 'jpg'
-    jpeg = 'jpeg'
-    png = 'png'
-    gif = 'gif'
-    webp = 'webp'
-    svg = 'svg'
-    avif = 'avif'
-    tiff = 'tiff'
-    pdf = 'pdf'
-    eps = 'eps'
-
-
 class ImageAssetRequirements(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    animation_allowed: Annotated[
-        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
-    ] = None
-    aspect_ratio: Annotated[
-        str | None,
+    min_width: Annotated[
+        float | None,
         Field(
-            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
-            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
+            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
         ),
     ] = None
-    bleed: Annotated[
-        Bleed | Bleed1 | None,
+    max_width: Annotated[
+        float | None,
         Field(
-            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
+            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
+            gt=0.0,
         ),
     ] = None
-    color_space: Annotated[
-        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
-    ] = None
-    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
-    max_animation_duration_ms: Annotated[
-        int | None,
+    min_height: Annotated[
+        float | None,
         Field(
-            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
-            ge=0,
+            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
+            gt=0.0,
         ),
     ] = None
-    max_file_size_kb: Annotated[
-        int | None, Field(description='Maximum file size in kilobytes', ge=1)
-    ] = None
     max_height: Annotated[
         float | None,
         Field(
@@ -90,20 +81,20 @@ class ImageAssetRequirements(AdCPBaseModel):
             gt=0.0,
         ),
     ] = None
-    max_weight_grams: Annotated[
-        int | None,
+    unit: Annotated[
+        dimension_unit.DimensionUnit | None,
         Field(
-            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
-            gt=0,
+            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
         ),
     ] = None
-    max_width: Annotated[
-        float | None,
+    aspect_ratio: Annotated[
+        str | None,
         Field(
-            description='Maximum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
-            gt=0.0,
+            description="Required aspect ratio (e.g., '16:9', '1:1', '1.91:1')",
+            pattern='^\\d+(\\.\\d+)?:\\d+(\\.\\d+)?$',
         ),
     ] = None
+    formats: Annotated[list[Format] | None, Field(description='Accepted image file formats')] = None
     min_dpi: Annotated[
         int | None,
         Field(
@@ -111,19 +102,17 @@ class ImageAssetRequirements(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    min_height: Annotated[
-        float | None,
+    bleed: Annotated[
+        Bleed | Bleed1 | None,
         Field(
-            description='Minimum height. Interpretation depends on unit (default: pixels). For exact dimensions, set min_height = max_height.',
-            gt=0.0,
+            description='Required bleed area beyond the trim size. The submitted image must be larger than the declared dimensions: total width = trim width + left bleed + right bleed, total height = trim height + top bleed + bottom bleed. For uniform bleed: total = trim + (2 * uniform). Uses the same unit as the parent dimensions.'
         ),
     ] = None
-    min_width: Annotated[
-        float | None,
-        Field(
-            description='Minimum width. Interpretation depends on unit (default: pixels). For exact dimensions, set min_width = max_width.',
-            gt=0.0,
-        ),
+    color_space: Annotated[
+        ColorSpace | None, Field(description='Required color space. Print typically requires CMYK.')
+    ] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
     ] = None
     transparency_required: Annotated[
         bool | None,
@@ -131,9 +120,20 @@ class ImageAssetRequirements(AdCPBaseModel):
             description='Whether the image must support transparency (requires PNG, WebP, or GIF)'
         ),
     ] = None
-    unit: Annotated[
-        dimension_unit.DimensionUnit | None,
+    animation_allowed: Annotated[
+        bool | None, Field(description='Whether animated images (GIF, animated WebP) are accepted')
+    ] = None
+    max_animation_duration_ms: Annotated[
+        int | None,
         Field(
-            description="Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
+            description='Maximum animation duration in milliseconds (if animation_allowed is true)',
+            ge=0,
+        ),
+    ] = None
+    max_weight_grams: Annotated[
+        int | None,
+        Field(
+            description='Maximum weight in grams for the finished physical piece (print inserts, flyers). Affects postage calculations and production constraints. Only applicable to print channels.',
+            gt=0,
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py
index a77c79478..19fa3e6b1 100644
--- a/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/javascript_asset_requirements.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,7 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field, constr
+from pydantic import ConfigDict, Field
 
 
 class ModuleType(Enum):
@@ -21,21 +21,6 @@ class JavascriptAssetRequirements(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    allowed_external_domains: Annotated[
-        list[
-            constr(
-                pattern=r'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]{0,61}[A-Za-z0-9])$'
-            )
-        ]
-        | None,
-        Field(
-            description='List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true.'
-        ),
-    ] = None
-    external_resources_allowed: Annotated[
-        bool | None,
-        Field(description='Whether the JavaScript can load external resources dynamically'),
-    ] = None
     max_file_size_kb: Annotated[
         int | None,
         Field(description='Maximum file size in kilobytes for the JavaScript asset', ge=1),
@@ -49,3 +34,13 @@ class JavascriptAssetRequirements(AdCPBaseModel):
     strict_mode_required: Annotated[
         bool | None, Field(description='Whether the JavaScript must use strict mode')
     ] = None
+    external_resources_allowed: Annotated[
+        bool | None,
+        Field(description='Whether the JavaScript can load external resources dynamically'),
+    ] = None
+    allowed_external_domains: Annotated[
+        list[str] | None,
+        Field(
+            description='List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/requirements/offering_asset_constraint.py b/src/adcp/types/generated_poc/core/requirements/offering_asset_constraint.py
index daf6fa54e..ce5875554 100644
--- a/src/adcp/types/generated_poc/core/requirements/offering_asset_constraint.py
+++ b/src/adcp/types/generated_poc/core/requirements/offering_asset_constraint.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/offering_asset_constraint.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,26 +24,26 @@ class OfferingAssetConstraint(AdCPBaseModel):
             description="The asset group this constraint applies to. Values are format-defined vocabulary — each format chooses its own group IDs (e.g., 'headlines', 'images', 'videos'). Buyers discover them via list_creative_formats."
         ),
     ]
-    asset_requirements: Annotated[
-        asset_requirements_1.AssetRequirements | None,
-        Field(
-            description='Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group.'
-        ),
-    ] = None
     asset_type: Annotated[
         asset_content_type.AssetContentType,
         Field(description='The expected content type for this group.'),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    max_count: Annotated[
-        int | None, Field(description='Maximum number of items allowed in this group.', ge=1)
-    ] = None
-    min_count: Annotated[
-        int | None, Field(description='Minimum number of items required in this group.', ge=1)
-    ] = None
     required: Annotated[
         bool | None,
         Field(
             description='Whether this asset group must be present in each offering. Defaults to true.'
         ),
     ] = True
+    min_count: Annotated[
+        int | None, Field(description='Minimum number of items required in this group.', ge=1)
+    ] = None
+    max_count: Annotated[
+        int | None, Field(description='Maximum number of items allowed in this group.', ge=1)
+    ] = None
+    asset_requirements: Annotated[
+        asset_requirements_1.AssetRequirements | None,
+        Field(
+            description='Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group.'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/requirements/text_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/text_asset_requirements.py
index e21e44dde..58fc40fe0 100644
--- a/src/adcp/types/generated_poc/core/requirements/text_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/text_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/text_asset_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,16 +14,16 @@ class TextAssetRequirements(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    min_length: Annotated[int | None, Field(description='Minimum character length', ge=0)] = None
+    max_length: Annotated[int | None, Field(description='Maximum character length', ge=1)] = None
+    min_lines: Annotated[int | None, Field(description='Minimum number of lines', ge=1)] = None
+    max_lines: Annotated[int | None, Field(description='Maximum number of lines', ge=1)] = None
     character_pattern: Annotated[
         str | None,
         Field(
             description="Regex pattern defining allowed characters (e.g., '^[a-zA-Z0-9 .,!?-]+$')"
         ),
     ] = None
-    max_length: Annotated[int | None, Field(description='Maximum character length', ge=1)] = None
-    max_lines: Annotated[int | None, Field(description='Maximum number of lines', ge=1)] = None
-    min_length: Annotated[int | None, Field(description='Minimum character length', ge=0)] = None
-    min_lines: Annotated[int | None, Field(description='Minimum number of lines', ge=1)] = None
     prohibited_terms: Annotated[
         list[str] | None, Field(description='List of prohibited words or phrases')
     ] = None
diff --git a/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py
index 651f09c6c..9ccf63300 100644
--- a/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/url_asset_requirements.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,12 +8,7 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field, constr
-
-
-class Protocol(Enum):
-    https = 'https'
-    http = 'http'
+from pydantic import ConfigDict, Field
 
 
 class Role(Enum):
@@ -25,33 +20,32 @@ class Role(Enum):
     third_party_tracker = 'third_party_tracker'
 
 
+class Protocol(Enum):
+    https = 'https'
+    http = 'http'
+
+
 class UrlAssetRequirements(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    allowed_domains: Annotated[
-        list[
-            constr(
-                pattern=r'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]{0,61}[A-Za-z0-9])$'
-            )
-        ]
-        | None,
-        Field(description='List of allowed domains for the URL'),
-    ] = None
-    macro_support: Annotated[
-        bool | None,
-        Field(description='Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})'),
-    ] = None
-    max_length: Annotated[
-        int | None, Field(description='Maximum URL length in characters', ge=1)
-    ] = None
-    protocols: Annotated[
-        list[Protocol] | None,
-        Field(description='Allowed URL protocols. HTTPS is recommended for all ad URLs.'),
-    ] = None
     role: Annotated[
         Role | None,
         Field(
             description='Standard role for this URL asset. Use this to constrain which purposes are valid for this URL slot. Complements asset_role (which is a human-readable label) by providing a machine-readable enum.'
         ),
     ] = None
+    protocols: Annotated[
+        list[Protocol] | None,
+        Field(description='Allowed URL protocols. HTTPS is recommended for all ad URLs.'),
+    ] = None
+    allowed_domains: Annotated[
+        list[str] | None, Field(description='List of allowed domains for the URL')
+    ] = None
+    max_length: Annotated[
+        int | None, Field(description='Maximum URL length in characters', ge=1)
+    ] = None
+    macro_support: Annotated[
+        bool | None,
+        Field(description='Whether the URL supports macro substitution (e.g., ${CACHEBUSTER})'),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/requirements/video_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/video_asset_requirements.py
index 36741a469..f91f387b3 100644
--- a/src/adcp/types/generated_poc/core/requirements/video_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/video_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/video_asset_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,14 +11,6 @@
 from pydantic import ConfigDict, Field, RootModel
 
 
-class Codec(Enum):
-    h264 = 'h264'
-    h265 = 'h265'
-    vp8 = 'vp8'
-    vp9 = 'vp9'
-    av1 = 'av1'
-
-
 class Container(Enum):
     mp4 = 'mp4'
     webm = 'webm'
@@ -27,45 +19,155 @@ class Container(Enum):
     mkv = 'mkv'
 
 
+class Codec(Enum):
+    h264 = 'h264'
+    h265 = 'h265'
+    vp8 = 'vp8'
+    vp9 = 'vp9'
+    av1 = 'av1'
+    prores = 'prores'
+
+
 class FrameRate(RootModel[float]):
     root: Annotated[float, Field(ge=1.0)]
 
 
+class FrameRateType(Enum):
+    constant = 'constant'
+    variable = 'variable'
+
+
+class ScanType(Enum):
+    progressive = 'progressive'
+    interlaced = 'interlaced'
+
+
+class GopType(Enum):
+    closed = 'closed'
+    open = 'open'
+
+
+class MoovAtomPosition(Enum):
+    start = 'start'
+    end = 'end'
+
+
+class AudioCodec(Enum):
+    aac = 'aac'
+    pcm = 'pcm'
+    ac3 = 'ac3'
+    eac3 = 'eac3'
+    mp3 = 'mp3'
+    opus = 'opus'
+    vorbis = 'vorbis'
+    flac = 'flac'
+
+
+class AudioSampleRate(RootModel[int]):
+    root: Annotated[int, Field(ge=1)]
+
+
+class AudioChannel(Enum):
+    mono = 'mono'
+    stereo = 'stereo'
+    field_5_1 = '5.1'
+    field_7_1 = '7.1'
+
+
 class VideoAssetRequirements(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    min_width: Annotated[int | None, Field(description='Minimum width in pixels', ge=1)] = None
+    max_width: Annotated[int | None, Field(description='Maximum width in pixels', ge=1)] = None
+    min_height: Annotated[int | None, Field(description='Minimum height in pixels', ge=1)] = None
+    max_height: Annotated[int | None, Field(description='Maximum height in pixels', ge=1)] = None
     aspect_ratio: Annotated[
         str | None,
         Field(description="Required aspect ratio (e.g., '16:9', '9:16')", pattern='^\\d+:\\d+$'),
     ] = None
-    audio_required: Annotated[
-        bool | None, Field(description='Whether the video must include an audio track')
+    min_duration_ms: Annotated[
+        int | None, Field(description='Minimum duration in milliseconds', ge=1)
+    ] = None
+    max_duration_ms: Annotated[
+        int | None, Field(description='Maximum duration in milliseconds', ge=1)
     ] = None
-    codecs: Annotated[list[Codec] | None, Field(description='Accepted video codecs')] = None
     containers: Annotated[
         list[Container] | None, Field(description='Accepted video container formats')
     ] = None
+    codecs: Annotated[list[Codec] | None, Field(description='Accepted video codecs')] = None
+    max_file_size_kb: Annotated[
+        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    ] = None
+    min_bitrate_kbps: Annotated[
+        int | None, Field(description='Minimum video bitrate in kilobits per second', ge=1)
+    ] = None
+    max_bitrate_kbps: Annotated[
+        int | None, Field(description='Maximum video bitrate in kilobits per second', ge=1)
+    ] = None
     frame_rates: Annotated[
         list[FrameRate] | None,
         Field(description='Accepted frame rates in frames per second (e.g., [24, 30, 60])'),
     ] = None
-    max_bitrate_kbps: Annotated[
-        int | None, Field(description='Maximum video bitrate in kilobits per second', ge=1)
+    audio_required: Annotated[
+        bool | None, Field(description='Whether the video must include an audio track')
     ] = None
-    max_duration_ms: Annotated[
-        int | None, Field(description='Maximum duration in milliseconds', ge=1)
+    frame_rate_type: Annotated[
+        FrameRateType | None,
+        Field(
+            description='Required frame rate type. Broadcast and SSAI require constant frame rate for seamless splicing.'
+        ),
     ] = None
-    max_file_size_kb: Annotated[
-        int | None, Field(description='Maximum file size in kilobytes', ge=1)
+    scan_type: Annotated[
+        ScanType | None,
+        Field(description='Required scan type. Modern delivery requires progressive scan.'),
     ] = None
-    max_height: Annotated[int | None, Field(description='Maximum height in pixels', ge=1)] = None
-    max_width: Annotated[int | None, Field(description='Maximum width in pixels', ge=1)] = None
-    min_bitrate_kbps: Annotated[
-        int | None, Field(description='Minimum video bitrate in kilobits per second', ge=1)
+    gop_type: Annotated[
+        GopType | None,
+        Field(
+            description='Required GOP structure. SSAI and broadcast require closed GOPs for clean splice points.'
+        ),
     ] = None
-    min_duration_ms: Annotated[
-        int | None, Field(description='Minimum duration in milliseconds', ge=1)
+    min_gop_interval_seconds: Annotated[
+        float | None, Field(description='Minimum keyframe interval in seconds', ge=0.0)
+    ] = None
+    max_gop_interval_seconds: Annotated[
+        float | None,
+        Field(
+            description='Maximum keyframe interval in seconds. SSAI typically requires 1-2 second intervals.',
+            ge=0.0,
+        ),
+    ] = None
+    moov_atom_position: Annotated[
+        MoovAtomPosition | None,
+        Field(
+            description="Required moov atom position in MP4 container. 'start' enables progressive download without buffering the entire file."
+        ),
+    ] = None
+    audio_codecs: Annotated[
+        list[AudioCodec] | None,
+        Field(description="Accepted audio codecs (e.g., ['aac', 'pcm', 'ac3'])"),
+    ] = None
+    audio_sample_rates: Annotated[
+        list[AudioSampleRate] | None,
+        Field(description='Accepted audio sample rates in Hz (e.g., [44100, 48000])'),
+    ] = None
+    audio_channels: Annotated[
+        list[AudioChannel] | None, Field(description='Accepted audio channel configurations')
+    ] = None
+    loudness_lufs: Annotated[
+        float | None,
+        Field(
+            description='Target integrated loudness in LUFS (e.g., -24 for broadcast, -16 for streaming)'
+        ),
+    ] = None
+    loudness_tolerance_db: Annotated[
+        float | None,
+        Field(
+            description='Acceptable deviation from loudness_lufs target in dB (e.g., 2 means -22 to -26 LUFS for a -24 target)',
+            ge=0.0,
+        ),
+    ] = None
+    true_peak_dbfs: Annotated[
+        float | None, Field(description='Maximum true peak level in dBFS (e.g., -2 for broadcast)')
     ] = None
-    min_height: Annotated[int | None, Field(description='Minimum height in pixels', ge=1)] = None
-    min_width: Annotated[int | None, Field(description='Minimum width in pixels', ge=1)] = None
diff --git a/src/adcp/types/generated_poc/core/response.py b/src/adcp/types/generated_poc/core/response.py
index edee5f42f..68913ca93 100644
--- a/src/adcp/types/generated_poc/core/response.py
+++ b/src/adcp/types/generated_poc/core/response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,6 +14,7 @@ class ProtocolResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    message: Annotated[str, Field(description='Human-readable summary')]
     context_id: Annotated[str | None, Field(description='Session continuity identifier')] = None
     data: Annotated[
         Any | None,
@@ -21,4 +22,3 @@ class ProtocolResponse(AdCPBaseModel):
             description='AdCP task-specific response data (see individual task response schemas)'
         ),
     ] = None
-    message: Annotated[str, Field(description='Human-readable summary')]
diff --git a/src/adcp/types/generated_poc/core/rights_constraint.py b/src/adcp/types/generated_poc/core/rights_constraint.py
index 74fdff0b2..6d8d55506 100644
--- a/src/adcp/types/generated_poc/core/rights_constraint.py
+++ b/src/adcp/types/generated_poc/core/rights_constraint.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/rights_constraint.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,10 +15,9 @@
 from . import ext as ext_1
 
 
-class ApprovalStatus(Enum):
-    pending = 'pending'
-    approved = 'approved'
-    rejected = 'rejected'
+class RightsAgent(AdCPBaseModel):
+    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+    id: Annotated[str, Field(description='Agent identifier')]
 
 
 class Country(RootModel[str]):
@@ -29,21 +28,33 @@ class ExcludedCountry(Country):
     pass
 
 
-class RightsAgent(AdCPBaseModel):
-    id: Annotated[str, Field(description='Agent identifier')]
-    url: Annotated[AnyUrl, Field(description='MCP endpoint URL of the rights agent')]
+class ApprovalStatus(Enum):
+    pending = 'pending'
+    approved = 'approved'
+    rejected = 'rejected'
 
 
 class RightsConstraint(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    approval_status: Annotated[
-        ApprovalStatus | None,
+    rights_id: Annotated[
+        str, Field(description='Rights grant identifier from the acquire_rights response')
+    ]
+    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
+    valid_from: Annotated[
+        AwareDatetime | None, Field(description='Start of the rights validity period')
+    ] = None
+    valid_until: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
+            description='End of the rights validity period. Creative should not be served after this time.'
         ),
     ] = None
+    uses: Annotated[
+        list[right_use.RightUse],
+        Field(description='Rights uses covered by this constraint', min_length=1),
+    ]
     countries: Annotated[
         list[Country] | None,
         Field(
@@ -56,7 +67,6 @@ class RightsConstraint(AdCPBaseModel):
             description='Countries excluded from rights availability (ISO 3166-1 alpha-2). Use when the grant is worldwide except specific markets.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     impression_cap: Annotated[
         int | None,
         Field(
@@ -70,21 +80,10 @@ class RightsConstraint(AdCPBaseModel):
             description='Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types.'
         ),
     ] = None
-    rights_agent: Annotated[RightsAgent, Field(description='The agent that granted these rights')]
-    rights_id: Annotated[
-        str, Field(description='Rights grant identifier from the acquire_rights response')
-    ]
-    uses: Annotated[
-        list[right_use.RightUse],
-        Field(description='Rights uses covered by this constraint', min_length=1),
-    ]
-    valid_from: Annotated[
-        AwareDatetime | None, Field(description='Start of the rights validity period')
-    ] = None
-    valid_until: Annotated[
-        AwareDatetime | None,
+    approval_status: Annotated[
+        ApprovalStatus | None,
         Field(
-            description='End of the rights validity period. Creative should not be served after this time.'
+            description='Approval status from the rights holder at manifest creation time (snapshot, not a live value)'
         ),
     ] = None
     verification_url: Annotated[
@@ -93,3 +92,4 @@ class RightsConstraint(AdCPBaseModel):
             description='URL where downstream supply chain participants can verify this rights grant is active. Returns HTTP 200 with the current grant status, or 404 if revoked. Enables SSPs and verification vendors to confirm rights before serving.'
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/signal_definition.py b/src/adcp/types/generated_poc/core/signal_definition.py
index 84ba44407..fb0d267fe 100644
--- a/src/adcp/types/generated_poc/core/signal_definition.py
+++ b/src/adcp/types/generated_poc/core/signal_definition.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/signal_definition.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -12,36 +12,22 @@
 from ..enums import restricted_attribute, signal_value_type
 
 
+class Tag(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z0-9_-]+$')]
+
+
 class Range(AdCPBaseModel):
-    max: Annotated[float, Field(description='Maximum value')]
     min: Annotated[float, Field(description='Minimum value')]
+    max: Annotated[float, Field(description='Maximum value')]
     unit: Annotated[
         str | None, Field(description="Unit of measurement (e.g., 'score', 'dollars', 'years')")
     ] = None
 
 
-class Tag(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[a-z0-9_-]+$')]
-
-
 class SignalDefinition(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    allowed_values: Annotated[
-        list[str] | None,
-        Field(
-            description='For categorical signals, the valid values users can be assigned',
-            min_length=1,
-        ),
-    ] = None
-    description: Annotated[
-        str | None,
-        Field(
-            description="Detailed description of what this signal represents and how it's derived",
-            max_length=2000,
-        ),
-    ] = None
     id: Annotated[
         str,
         Field(
@@ -52,16 +38,28 @@ class SignalDefinition(AdCPBaseModel):
     name: Annotated[
         str, Field(description='Human-readable signal name', max_length=255, min_length=1)
     ]
-    policy_categories: Annotated[
+    description: Annotated[
+        str | None,
+        Field(
+            description="Detailed description of what this signal represents and how it's derived",
+            max_length=2000,
+        ),
+    ] = None
+    value_type: Annotated[
+        signal_value_type.SignalValueType,
+        Field(description="The data type of this signal's values"),
+    ]
+    tags: Annotated[
+        list[Tag] | None,
+        Field(description='Tags for grouping and filtering signals within the catalog'),
+    ] = None
+    allowed_values: Annotated[
         list[str] | None,
         Field(
-            description="Policy categories this signal is sensitive for (e.g., a children's interest signal declares ['children_directed']). Governance agents match these against a plan's policy_categories to flag sensitive data usage.",
+            description='For categorical signals, the valid values users can be assigned',
             min_length=1,
         ),
     ] = None
-    range: Annotated[
-        Range | None, Field(description='For numeric signals, the valid value range')
-    ] = None
     restricted_attributes: Annotated[
         list[restricted_attribute.RestrictedAttribute] | None,
         Field(
@@ -69,11 +67,13 @@ class SignalDefinition(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    tags: Annotated[
-        list[Tag] | None,
-        Field(description='Tags for grouping and filtering signals within the catalog'),
+    policy_categories: Annotated[
+        list[str] | None,
+        Field(
+            description="Policy categories this signal is sensitive for (e.g., a children's interest signal declares ['children_directed']). Governance agents match these against a plan's policy_categories to flag sensitive data usage.",
+            min_length=1,
+        ),
+    ] = None
+    range: Annotated[
+        Range | None, Field(description='For numeric signals, the valid value range')
     ] = None
-    value_type: Annotated[
-        signal_value_type.SignalValueType,
-        Field(description="The data type of this signal's values"),
-    ]
diff --git a/src/adcp/types/generated_poc/core/signal_id.py b/src/adcp/types/generated_poc/core/signal_id.py
index bce61af31..ba285fdc0 100644
--- a/src/adcp/types/generated_poc/core/signal_id.py
+++ b/src/adcp/types/generated_poc/core/signal_id.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/signal_id.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,10 +10,16 @@
 from pydantic import AnyUrl, ConfigDict, Field, RootModel
 
 
-class SignalId2(AdCPBaseModel):
+class SignalId17(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    source: Annotated[
+        Literal['catalog'],
+        Field(
+            description="Discriminator indicating this signal is from a data provider's published catalog"
+        ),
+    ]
     data_provider_domain: Annotated[
         str,
         Field(
@@ -28,18 +34,18 @@ class SignalId2(AdCPBaseModel):
             pattern='^[a-zA-Z0-9_-]+$',
         ),
     ]
-    source: Annotated[
-        Literal['catalog'],
-        Field(
-            description="Discriminator indicating this signal is from a data provider's published catalog"
-        ),
-    ]
 
 
-class SignalId3(AdCPBaseModel):
+class SignalId18(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    source: Annotated[
+        Literal['agent'],
+        Field(
+            description='Discriminator indicating this signal is native to the agent (not from a data provider catalog)'
+        ),
+    ]
     agent_url: Annotated[
         AnyUrl,
         Field(
@@ -53,17 +59,11 @@ class SignalId3(AdCPBaseModel):
             pattern='^[a-zA-Z0-9_-]+$',
         ),
     ]
-    source: Annotated[
-        Literal['agent'],
-        Field(
-            description='Discriminator indicating this signal is native to the agent (not from a data provider catalog)'
-        ),
-    ]
 
 
-class SignalId(RootModel[SignalId2 | SignalId3]):
+class SignalId(RootModel[SignalId17 | SignalId18]):
     root: Annotated[
-        SignalId2 | SignalId3,
+        SignalId17 | SignalId18,
         Field(
             description="Universal signal identifier. Uses 'source' as discriminator: 'catalog' for signals from a data provider's published catalog (verifiable), 'agent' for agent-native signals (not externally verifiable).",
             discriminator='source',
diff --git a/src/adcp/types/generated_poc/core/signal_pricing.py b/src/adcp/types/generated_poc/core/signal_pricing.py
index 6c5755e06..6777ed4a4 100644
--- a/src/adcp/types/generated_poc/core/signal_pricing.py
+++ b/src/adcp/types/generated_poc/core/signal_pricing.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/signal_pricing.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -13,25 +13,24 @@
 from . import ext as ext_1
 
 
-class SignalPricing1(AdCPBaseModel):
+class VendorPricing1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    model: Literal['cpm']
     cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
     currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
     ext: ext_1.ExtensionObject | None = None
-    model: Literal['cpm']
 
 
-class SignalPricing2(AdCPBaseModel):
+class VendorPricing2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    currency: Annotated[
-        str,
-        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
     ]
-    ext: ext_1.ExtensionObject | None = None
     max_cpm: Annotated[
         float | None,
         Field(
@@ -39,10 +38,11 @@ class SignalPricing2(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    model: Literal['percent_of_media']
-    percent: Annotated[
-        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
     ]
+    ext: ext_1.ExtensionObject | None = None
 
 
 class Period(Enum):
@@ -52,23 +52,39 @@ class Period(Enum):
     campaign = 'campaign'
 
 
-class SignalPricing3(AdCPBaseModel):
+class VendorPricing3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    model: Literal['flat_fee']
     amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: ext_1.ExtensionObject | None = None
+
+
+class VendorPricing4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
     currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
     ext: ext_1.ExtensionObject | None = None
-    model: Literal['flat_fee']
-    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
 
 
-class SignalPricing(RootModel[SignalPricing1 | SignalPricing2 | SignalPricing3]):
+class VendorPricing(RootModel[VendorPricing1 | VendorPricing2 | VendorPricing3 | VendorPricing4]):
     root: Annotated[
-        SignalPricing1 | SignalPricing2 | SignalPricing3,
+        VendorPricing1 | VendorPricing2 | VendorPricing3 | VendorPricing4,
         Field(
-            description="Pricing model for a signal. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), or 'flat_fee' (fixed charge per reporting period, e.g. monthly licensed segments).",
-            title='Signal Pricing',
+            description="Pricing model for a vendor service. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), 'flat_fee' (fixed charge per reporting period), or 'per_unit' (fixed price per unit of work).",
+            title='Vendor Pricing',
         ),
     ]
 
diff --git a/src/adcp/types/generated_poc/core/signal_pricing_option.py b/src/adcp/types/generated_poc/core/signal_pricing_option.py
index 854472ca1..e2d98ae7f 100644
--- a/src/adcp/types/generated_poc/core/signal_pricing_option.py
+++ b/src/adcp/types/generated_poc/core/signal_pricing_option.py
@@ -1,102 +1,21 @@
 # generated by datamodel-codegen:
 #   filename:  core/signal_pricing_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
-from enum import Enum
-from typing import Any, Annotated, Literal
+from typing import Annotated
 
-from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field, RootModel
+from pydantic import Field, RootModel
 
-from . import ext as ext_1
+from . import vendor_pricing_option
 
 
-class SignalPricingOption1(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
-    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
-    ext: ext_1.ExtensionObject | None = None
-    model: Literal['cpm']
-
-
-class SignalPricingOption2(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    currency: Annotated[
-        str,
-        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
-    ]
-    ext: ext_1.ExtensionObject | None = None
-    max_cpm: Annotated[
-        float | None,
-        Field(
-            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
-            ge=0.0,
-        ),
-    ] = None
-    model: Literal['percent_of_media']
-    percent: Annotated[
-        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
-    ]
-
-
-class Period(Enum):
-    monthly = 'monthly'
-    quarterly = 'quarterly'
-    annual = 'annual'
-    campaign = 'campaign'
-
-
-class SignalPricingOption3(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
-    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
-    ext: ext_1.ExtensionObject | None = None
-    model: Literal['flat_fee']
-    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
-
-
-class SignalPricingOption4(AdCPBaseModel):
-    pricing_option_id: Annotated[
-        str,
-        Field(
-            description='Opaque identifier for this pricing option, unique within the signals agent. Pass this in report_usage to identify which pricing option was applied.'
-        ),
-    ]
-
-
-class SignalPricingOption5(SignalPricingOption1, SignalPricingOption4):
-    pass
-
-
-class SignalPricingOption6(SignalPricingOption2, SignalPricingOption4):
-    pass
-
-
-class SignalPricingOption7(SignalPricingOption3, SignalPricingOption4):
-    pass
-
-
-class SignalPricingOption(
-    RootModel[SignalPricingOption5 | SignalPricingOption6 | SignalPricingOption7]
-):
+class SignalPricingOption(RootModel[vendor_pricing_option.VendorPricingOption]):
     root: Annotated[
-        SignalPricingOption5 | SignalPricingOption6 | SignalPricingOption7,
+        vendor_pricing_option.VendorPricingOption,
         Field(
-            description='A pricing option offered by a signals agent. Combines pricing_option_id with the signal pricing model fields at the same level — pass pricing_option_id in report_usage for billing verification.',
+            description='Deprecated — use vendor-pricing-option.json for new implementations. This alias is retained for backward compatibility.',
             title='Signal Pricing Option',
         ),
     ]
-
-    def __getattr__(self, name: str) -> Any:
-        """Proxy attribute access to the wrapped type."""
-        if name.startswith('_'):
-            raise AttributeError(name)
-        return getattr(self.root, name)
diff --git a/src/adcp/types/generated_poc/core/signal_targeting.py b/src/adcp/types/generated_poc/core/signal_targeting.py
index ac472a6ca..b8df99b12 100644
--- a/src/adcp/types/generated_poc/core/signal_targeting.py
+++ b/src/adcp/types/generated_poc/core/signal_targeting.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/signal_targeting.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -12,21 +12,21 @@
 from . import signal_id as signal_id_1
 
 
-class SignalTargeting1(AdCPBaseModel):
+class SignalTargeting4(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
     signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
+    value_type: Annotated[Literal['binary'], Field(description='Discriminator for binary signals')]
     value: Annotated[
         bool,
         Field(
             description='Whether to include (true) or exclude (false) users matching this signal'
         ),
     ]
-    value_type: Annotated[Literal['binary'], Field(description='Discriminator for binary signals')]
 
 
-class SignalTargeting2(AdCPBaseModel):
+class SignalTargeting5(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
@@ -43,31 +43,31 @@ class SignalTargeting2(AdCPBaseModel):
     ]
 
 
-class SignalTargeting3(AdCPBaseModel):
+class SignalTargeting6(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    max_value: Annotated[
+    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
+    value_type: Annotated[
+        Literal['numeric'], Field(description='Discriminator for numeric signals')
+    ]
+    min_value: Annotated[
         float | None,
         Field(
-            description="Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided. Should be <= signal's range.max if defined."
+            description="Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided. Should be >= signal's range.min if defined."
         ),
     ] = None
-    min_value: Annotated[
+    max_value: Annotated[
         float | None,
         Field(
-            description="Minimum value (inclusive). Omit for no minimum. Must be <= max_value when both are provided. Should be >= signal's range.min if defined."
+            description="Maximum value (inclusive). Omit for no maximum. Must be >= min_value when both are provided. Should be <= signal's range.max if defined."
         ),
     ] = None
-    signal_id: Annotated[signal_id_1.SignalId, Field(description='The signal to target')]
-    value_type: Annotated[
-        Literal['numeric'], Field(description='Discriminator for numeric signals')
-    ]
 
 
-class SignalTargeting(RootModel[SignalTargeting1 | SignalTargeting2 | SignalTargeting3]):
+class SignalTargeting(RootModel[SignalTargeting4 | SignalTargeting5 | SignalTargeting6]):
     root: Annotated[
-        SignalTargeting1 | SignalTargeting2 | SignalTargeting3,
+        SignalTargeting4 | SignalTargeting5 | SignalTargeting6,
         Field(
             description='Targeting constraint for a specific signal. Uses value_type as discriminator to determine the targeting expression format.',
             discriminator='value_type',
diff --git a/src/adcp/types/generated_poc/core/start_timing.py b/src/adcp/types/generated_poc/core/start_timing.py
index 74ed3b8b3..089caa322 100644
--- a/src/adcp/types/generated_poc/core/start_timing.py
+++ b/src/adcp/types/generated_poc/core/start_timing.py
@@ -1,17 +1,17 @@
 # generated by datamodel-codegen:
 #   filename:  core/start_timing.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
-from typing import Any, Annotated
+from typing import Any, Annotated, Literal
 
 from pydantic import AwareDatetime, Field, RootModel
 
 
-class StartTiming(RootModel[str | AwareDatetime]):
+class StartTiming(RootModel[Literal['asap'] | AwareDatetime]):
     root: Annotated[
-        str | AwareDatetime,
+        Literal['asap'] | AwareDatetime,
         Field(
             description="Campaign start timing: 'asap' or ISO 8601 date-time", title='Start Timing'
         ),
diff --git a/src/adcp/types/generated_poc/core/store_item.py b/src/adcp/types/generated_poc/core/store_item.py
index f7746bf27..e7f21662d 100644
--- a/src/adcp/types/generated_poc/core/store_item.py
+++ b/src/adcp/types/generated_poc/core/store_item.py
@@ -1,10 +1,10 @@
 # generated by datamodel-codegen:
 #   filename:  core/store_item.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
-from typing import Annotated
+from typing import Annotated, Literal
 
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, ConfigDict, Field
@@ -13,40 +13,53 @@
 from . import ext as ext_1
 
 
+class Location(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    lat: Annotated[
+        float, Field(description='Latitude in decimal degrees (WGS 84).', ge=-90.0, le=90.0)
+    ]
+    lng: Annotated[
+        float, Field(description='Longitude in decimal degrees (WGS 84).', ge=-180.0, le=180.0)
+    ]
+
+
 class Address(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    street: Annotated[str | None, Field(description="Street address (e.g., '123 Main St').")] = None
     city: Annotated[str | None, Field(description='City name.')] = None
-    country: Annotated[
-        str | None, Field(description='ISO 3166-1 alpha-2 country code.', pattern='^[A-Z]{2}$')
-    ] = None
-    postal_code: Annotated[str | None, Field(description='Postal or ZIP code.')] = None
     region: Annotated[
         str | None,
         Field(
             description="State, province, or region. ISO 3166-2 subdivision code preferred (e.g., 'NL-NH', 'US-CA')."
         ),
     ] = None
-    street: Annotated[str | None, Field(description="Street address (e.g., '123 Main St').")] = None
-
-
-class Location(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    lat: Annotated[
-        float, Field(description='Latitude in decimal degrees (WGS 84).', ge=-90.0, le=90.0)
-    ]
-    lng: Annotated[
-        float, Field(description='Longitude in decimal degrees (WGS 84).', ge=-180.0, le=180.0)
-    ]
+    postal_code: Annotated[str | None, Field(description='Postal or ZIP code.')] = None
+    country: Annotated[
+        str | None, Field(description='ISO 3166-1 alpha-2 country code.', pattern='^[A-Z]{2}$')
+    ] = None
 
 
 class StoreItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    store_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this store. Used to reference specific stores in targeting, inventory feeds, and creative templates.'
+        ),
+    ]
+    name: Annotated[
+        str,
+        Field(
+            description="Human-readable store name (e.g., 'Amsterdam Flagship', 'Brooklyn Heights')."
+        ),
+    ]
+    location: Annotated[Location, Field(description='Geographic coordinates of the store.')]
     address: Annotated[
         Address | None, Field(description='Structured address for display and geocoding fallback.')
     ] = None
@@ -57,29 +70,23 @@ class StoreItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    hours: Annotated[
-        dict[str, str] | None,
-        Field(
-            description='Operating hours. Keys are ISO day names (monday–sunday), values are time ranges.'
-        ),
-    ] = None
-    location: Annotated[Location, Field(description='Geographic coordinates of the store.')]
-    name: Annotated[
-        str,
-        Field(
-            description="Human-readable store name (e.g., 'Amsterdam Flagship', 'Brooklyn Heights')."
-        ),
-    ]
     phone: Annotated[
         str | None, Field(description="Store phone number in E.164 format (e.g., '+31201234567').")
     ] = None
-    store_id: Annotated[
-        str,
+    url: Annotated[
+        AnyUrl | None,
+        Field(description='Store-specific page URL (e.g., store locator detail page).'),
+    ] = None
+    hours: Annotated[
+        dict[
+            Literal['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'],
+            str,
+        ]
+        | None,
         Field(
-            description='Unique identifier for this store. Used to reference specific stores in targeting, inventory feeds, and creative templates.'
+            description='Operating hours. Keys are ISO day names (monday–sunday), values are time ranges.'
         ),
-    ]
+    ] = None
     tags: Annotated[
         list[str] | None,
         Field(
@@ -87,7 +94,4 @@ class StoreItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    url: Annotated[
-        AnyUrl | None,
-        Field(description='Store-specific page URL (e.g., store locator detail page).'),
-    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/targeting.py b/src/adcp/types/generated_poc/core/targeting.py
index b651411da..6d708fda2 100644
--- a/src/adcp/types/generated_poc/core/targeting.py
+++ b/src/adcp/types/generated_poc/core/targeting.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/targeting.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,30 +15,12 @@
 from ..enums import device_type as device_type_1
 from ..enums import distance_unit, metro_system, postal_system
 from ..enums import transport_mode as transport_mode_1
-from . import daypart_target
+from . import collection_list_ref, daypart_target
 from . import ext as ext_1
 from . import frequency_cap as frequency_cap_1
 from . import property_list_ref
 
 
-class AgeRestriction(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    accepted_methods: Annotated[
-        list[age_verification_method.AgeVerificationMethod] | None,
-        Field(
-            description='Accepted verification methods. If omitted, any method the platform supports is acceptable.',
-            min_length=1,
-        ),
-    ] = None
-    min: Annotated[int, Field(description='Minimum age required', ge=13, le=99)]
-    verification_required: Annotated[
-        bool | None,
-        Field(description='Whether verified age (not inferred) is required for compliance'),
-    ] = False
-
-
 class GeoCountry(RootModel[str]):
     root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
@@ -47,6 +29,14 @@ class GeoCountriesExcludeItem(GeoCountry):
     pass
 
 
+class GeoRegion(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+
+
+class GeoRegionsExcludeItem(GeoRegion):
+    pass
+
+
 class GeoMetro(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
@@ -119,30 +109,45 @@ class GeoPostalAreasExcludeItem(AdCPBaseModel):
     ]
 
 
-class Type(Enum):
-    Polygon = 'Polygon'
-    MultiPolygon = 'MultiPolygon'
-
-
-class Geometry(AdCPBaseModel):
+class AgeRestriction(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    coordinates: Annotated[
-        list[Any],
+    min: Annotated[int, Field(description='Minimum age required', ge=13, le=99)]
+    verification_required: Annotated[
+        bool | None,
+        Field(description='Whether verified age (not inferred) is required for compliance'),
+    ] = False
+    accepted_methods: Annotated[
+        list[age_verification_method.AgeVerificationMethod] | None,
         Field(
-            description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
+            description='Accepted verification methods. If omitted, any method the platform supports is acceptable.',
+            min_length=1,
         ),
-    ]
-    type: Annotated[Type, Field(description='GeoJSON geometry type.')]
+    ] = None
 
 
-class Radius(AdCPBaseModel):
+class StoreCatchment(AdCPBaseModel):
     model_config = ConfigDict(
-        extra='forbid',
+        extra='allow',
     )
-    unit: Annotated[distance_unit.DistanceUnit, Field(description='Distance unit.')]
-    value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    catalog_id: Annotated[
+        str, Field(description='Synced store-type catalog ID from sync_catalogs.')
+    ]
+    store_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific stores within the catalog. Omit to target all stores.',
+            min_length=1,
+        ),
+    ] = None
+    catchment_ids: Annotated[
+        list[str] | None,
+        Field(
+            description="Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
+            min_length=1,
+        ),
+    ] = None
 
 
 class Unit(Enum):
@@ -154,30 +159,56 @@ class TravelTime(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    unit: Annotated[Unit, Field(description='Time unit.')]
     value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
+    unit: Annotated[Unit, Field(description='Time unit.')]
 
 
-Geometry5 = Geometry
+class Radius(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Radius distance.', gt=0.0)]
+    unit: Annotated[distance_unit.DistanceUnit, Field(description='Distance unit.')]
 
 
-TravelTime5 = TravelTime
+class Type(Enum):
+    Polygon = 'Polygon'
+    MultiPolygon = 'MultiPolygon'
 
 
-Geometry6 = Geometry
+class Geometry(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[Type, Field(description='GeoJSON geometry type.')]
+    coordinates: Annotated[
+        list[Any],
+        Field(
+            description='GeoJSON coordinates array. For Polygon: array of linear rings. For MultiPolygon: array of polygons.'
+        ),
+    ]
 
 
-TravelTime6 = TravelTime
+class TravelTime17(TravelTime):
+    pass
 
 
-class GeoRegion(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$')]
+class Geometry17(Geometry):
+    pass
 
 
-class GeoRegionsExcludeItem(GeoRegion):
+class TravelTime18(TravelTime):
+    pass
+
+
+class Geometry18(Geometry):
     pass
 
 
+class LanguageItem(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[a-z]{2}$')]
+
+
 class MatchType(Enum):
     broad = 'broad'
     phrase = 'phrase'
@@ -188,13 +219,6 @@ class KeywordTarget(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    bid_price: Annotated[
-        float | None,
-        Field(
-            description="Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
-            ge=0.0,
-        ),
-    ] = None
     keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
     match_type: Annotated[
         MatchType,
@@ -202,10 +226,13 @@ class KeywordTarget(AdCPBaseModel):
             description='Match type: broad matches related queries, phrase matches queries containing the keyword phrase, exact matches the query exactly'
         ),
     ]
-
-
-class LanguageItem(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[a-z]{2}$')]
+    bid_price: Annotated[
+        float | None,
+        Field(
+            description="Per-keyword bid price, denominated in the same currency as the package's pricing option. Overrides the package-level bid_price for this keyword. Inherits the max_bid interpretation from the pricing option: when max_bid is true, this is the keyword's bid ceiling; when false, this is the exact bid. If omitted, the package bid_price applies.",
+            ge=0.0,
+        ),
+    ] = None
 
 
 class NegativeKeyword(AdCPBaseModel):
@@ -216,46 +243,10 @@ class NegativeKeyword(AdCPBaseModel):
     match_type: Annotated[MatchType, Field(description='Match type for exclusion')]
 
 
-class StoreCatchment(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    catalog_id: Annotated[
-        str, Field(description='Synced store-type catalog ID from sync_catalogs.')
-    ]
-    catchment_ids: Annotated[
-        list[str] | None,
-        Field(
-            description="Catchment zone IDs to target (e.g., 'walk', 'drive'). Omit to target all catchment zones.",
-            min_length=1,
-        ),
-    ] = None
-    store_ids: Annotated[
-        list[str] | None,
-        Field(
-            description='Filter to specific stores within the catalog. Omit to target all stores.',
-            min_length=1,
-        ),
-    ] = None
-
-
 class GeoProximity(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    ext: ext_1.ExtensionObject | None = None
-    geometry: Annotated[
-        Geometry | None,
-        Field(
-            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
-        ),
-    ] = None
-    label: Annotated[
-        str | None,
-        Field(
-            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
-        ),
-    ] = None
     lat: Annotated[
         float,
         Field(
@@ -272,43 +263,43 @@ class GeoProximity(AdCPBaseModel):
             le=180.0,
         ),
     ]
-    radius: Annotated[
-        Radius | None,
+    label: Annotated[
+        str | None,
         Field(
-            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
         ),
     ] = None
+    travel_time: Annotated[
+        TravelTime,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ]
     transport_mode: Annotated[
         transport_mode_1.TransportMode,
         Field(
             description='Transportation mode for isochrone calculation. Required when travel_time is provided.'
         ),
     ]
-    travel_time: Annotated[
-        TravelTime,
+    radius: Annotated[
+        Radius | None,
         Field(
-            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
         ),
-    ]
-
-
-class GeoProximity5(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    ext: ext_1.ExtensionObject | None = None
+    ] = None
     geometry: Annotated[
-        Geometry5 | None,
+        Geometry | None,
         Field(
             description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
         ),
     ] = None
-    label: Annotated[
-        str | None,
-        Field(
-            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
-        ),
-    ] = None
+    ext: ext_1.ExtensionObject | None = None
+
+
+class GeoProximity18(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
     lat: Annotated[
         float,
         Field(
@@ -325,43 +316,43 @@ class GeoProximity5(AdCPBaseModel):
             le=180.0,
         ),
     ]
-    radius: Annotated[
-        Radius,
+    label: Annotated[
+        str | None,
         Field(
-            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
         ),
-    ]
+    ] = None
+    travel_time: Annotated[
+        TravelTime17 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+        ),
+    ] = None
     transport_mode: Annotated[
         transport_mode_1.TransportMode | None,
         Field(
             description='Transportation mode for isochrone calculation. Required when travel_time is provided.'
         ),
     ] = None
-    travel_time: Annotated[
-        TravelTime5 | None,
+    radius: Annotated[
+        Radius,
         Field(
-            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+        ),
+    ]
+    geometry: Annotated[
+        Geometry17 | None,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
         ),
     ] = None
+    ext: ext_1.ExtensionObject | None = None
 
 
-class GeoProximity6(AdCPBaseModel):
+class GeoProximity19(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    ext: ext_1.ExtensionObject | None = None
-    geometry: Annotated[
-        Geometry6,
-        Field(
-            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
-        ),
-    ]
-    label: Annotated[
-        str | None,
-        Field(
-            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
-        ),
-    ] = None
     lat: Annotated[
         float | None,
         Field(
@@ -378,10 +369,16 @@ class GeoProximity6(AdCPBaseModel):
             le=180.0,
         ),
     ] = None
-    radius: Annotated[
-        Radius | None,
+    label: Annotated[
+        str | None,
         Field(
-            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
+            description="Human-readable label for this entry (e.g., 'Düsseldorf', 'Heathrow Airport', 'Primary trade area')."
+        ),
+    ] = None
+    travel_time: Annotated[
+        TravelTime18 | None,
+        Field(
+            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
         ),
     ] = None
     transport_mode: Annotated[
@@ -390,148 +387,173 @@ class GeoProximity6(AdCPBaseModel):
             description='Transportation mode for isochrone calculation. Required when travel_time is provided.'
         ),
     ] = None
-    travel_time: Annotated[
-        TravelTime6 | None,
+    radius: Annotated[
+        Radius | None,
         Field(
-            description='Travel time limit for isochrone calculation. The platform resolves this to a geographic boundary based on actual transportation networks.'
+            description='Simple radius from the point. The platform draws a circle of this distance around the coordinates.'
         ),
     ] = None
+    geometry: Annotated[
+        Geometry18,
+        Field(
+            description='Pre-computed GeoJSON geometry defining the proximity boundary. Use when the buyer has already calculated isochrones (via TravelTime, Mapbox, etc.) or has custom boundaries. When geometry is provided, lat/lng are not required.'
+        ),
+    ]
+    ext: ext_1.ExtensionObject | None = None
 
 
 class TargetingOverlay(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    age_restriction: Annotated[
-        AgeRestriction | None,
+    geo_countries: Annotated[
+        list[GeoCountry] | None,
         Field(
-            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
+            min_length=1,
         ),
     ] = None
-    audience_exclude: Annotated[
-        list[str] | None,
+    geo_countries_exclude: Annotated[
+        list[GeoCountriesExcludeItem] | None,
         Field(
-            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
+            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
             min_length=1,
         ),
     ] = None
-    audience_include: Annotated[
-        list[str] | None,
+    geo_regions: Annotated[
+        list[GeoRegion] | None,
         Field(
-            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
+            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
             min_length=1,
         ),
     ] = None
-    axe_exclude_segment: Annotated[
-        str | None,
+    geo_regions_exclude: Annotated[
+        list[GeoRegionsExcludeItem] | None,
         Field(
-            deprecated=True,
-            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.'
+            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            min_length=1,
         ),
     ] = None
-    axe_include_segment: Annotated[
-        str | None,
+    geo_metros: Annotated[
+        list[GeoMetro] | None,
         Field(
-            deprecated=True,
-            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.'
+            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            min_length=1,
         ),
     ] = None
-    daypart_targets: Annotated[
-        list[daypart_target.DaypartTarget] | None,
+    geo_metros_exclude: Annotated[
+        list[GeoMetrosExcludeItem] | None,
         Field(
-            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
+            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
-    device_platform: Annotated[
-        list[device_platform_1.DevicePlatform] | None,
+    geo_postal_areas: Annotated[
+        list[GeoPostalArea] | None,
         Field(
-            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
+            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
-    device_type: Annotated[
-        list[device_type_1.DeviceType] | None,
+    geo_postal_areas_exclude: Annotated[
+        list[GeoPostalAreasExcludeItem] | None,
         Field(
-            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
+            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
-    device_type_exclude: Annotated[
-        list[device_type_1.DeviceType] | None,
+    daypart_targets: Annotated[
+        list[daypart_target.DaypartTarget] | None,
         Field(
-            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
+            description='Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.',
             min_length=1,
         ),
     ] = None
-    frequency_cap: frequency_cap_1.FrequencyCap | None = None
-    geo_countries: Annotated[
-        list[GeoCountry] | None,
+    axe_include_segment: Annotated[
+        str | None,
         Field(
-            description="Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
-            min_length=1,
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
         ),
     ] = None
-    geo_countries_exclude: Annotated[
-        list[GeoCountriesExcludeItem] | None,
+    axe_exclude_segment: Annotated[
+        str | None,
         Field(
-            description="Exclude specific countries from delivery. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
-            min_length=1,
+            deprecated=True,
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
         ),
     ] = None
-    geo_metros: Annotated[
-        list[GeoMetro] | None,
+    audience_include: Annotated[
+        list[str] | None,
         Field(
-            description='Restrict delivery to specific metro areas. Each entry specifies the classification system and target values. Seller must declare supported systems in get_adcp_capabilities.',
+            description='Restrict delivery to members of these first-party CRM audiences. Only users present in the uploaded lists are eligible. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Not for lookalike expansion — express that intent in the campaign brief. Seller must declare support in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
-    geo_metros_exclude: Annotated[
-        list[GeoMetrosExcludeItem] | None,
+    audience_exclude: Annotated[
+        list[str] | None,
         Field(
-            description='Exclude specific metro areas from delivery. Each entry specifies the classification system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            description='Suppress delivery to members of these first-party CRM audiences. Matched users are excluded regardless of other targeting. References audience_id values from sync_audiences on the same seller account — audience IDs are not portable across sellers. Seller must declare support in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
-    geo_postal_areas: Annotated[
-        list[GeoPostalArea] | None,
+    frequency_cap: frequency_cap_1.FrequencyCap | None = None
+    property_list: Annotated[
+        property_list_ref.PropertyListReference | None,
         Field(
-            description='Restrict delivery to specific postal areas. Each entry specifies the postal system and target values. Seller must declare supported systems in get_adcp_capabilities.',
-            min_length=1,
+            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false."
         ),
     ] = None
-    geo_postal_areas_exclude: Annotated[
-        list[GeoPostalAreasExcludeItem] | None,
+    collection_list: Annotated[
+        collection_list_ref.CollectionListReference | None,
         Field(
-            description='Exclude specific postal areas from delivery. Each entry specifies the postal system and excluded values. Seller must declare supported systems in get_adcp_capabilities.',
+            description='Reference to a collection list for including specific collections (programs, shows) within this product. The package runs on the intersection of matched collections and this list. Use for inclusion-based collection targeting. Seller must declare support in get_adcp_capabilities.'
+        ),
+    ] = None
+    collection_list_exclude: Annotated[
+        collection_list_ref.CollectionListReference | None,
+        Field(
+            description="Reference to a collection list for excluding specific collections (programs, shows) from this product. Matched collections must not carry the buyer's ads. Use for brand safety do-not-air lists. Seller must declare support in get_adcp_capabilities."
+        ),
+    ] = None
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(
+            description='Age restriction for compliance. Use for legal requirements (alcohol, gambling), not audience targeting.'
+        ),
+    ] = None
+    device_platform: Annotated[
+        list[device_platform_1.DevicePlatform] | None,
+        Field(
+            description='Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.',
             min_length=1,
         ),
     ] = None
-    geo_proximity: Annotated[
-        list[GeoProximity | GeoProximity5 | GeoProximity6] | None,
+    device_type: Annotated[
+        list[device_type_1.DeviceType] | None,
         Field(
-            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
+            description='Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).',
             min_length=1,
         ),
     ] = None
-    geo_regions: Annotated[
-        list[GeoRegion] | None,
+    device_type_exclude: Annotated[
+        list[device_type_1.DeviceType] | None,
         Field(
-            description="Restrict delivery to specific regions/states. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            description='Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).',
             min_length=1,
         ),
     ] = None
-    geo_regions_exclude: Annotated[
-        list[GeoRegionsExcludeItem] | None,
+    store_catchments: Annotated[
+        list[StoreCatchment] | None,
         Field(
-            description="Exclude specific regions/states from delivery. ISO 3166-2 subdivision codes (e.g., 'US-CA', 'GB-SCT').",
+            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
             min_length=1,
         ),
     ] = None
-    keyword_targets: Annotated[
-        list[KeywordTarget] | None,
+    geo_proximity: Annotated[
+        list[GeoProximity | GeoProximity18 | GeoProximity19] | None,
         Field(
-            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
+            description='Target users within travel time, distance, or a custom boundary around arbitrary geographic points. Multiple entries use OR semantics — a user within range of any listed point is eligible. For campaigns targeting 10+ locations, consider using store_catchments with a location catalog instead. Seller must declare support in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
@@ -542,23 +564,17 @@ class TargetingOverlay(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    negative_keywords: Annotated[
-        list[NegativeKeyword] | None,
+    keyword_targets: Annotated[
+        list[KeywordTarget] | None,
         Field(
-            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
+            description='Keyword targeting for search and retail media platforms. Restricts delivery to queries matching the specified keywords. Each keyword is identified by the tuple (keyword, match_type) — the same keyword string with different match types are distinct targets. Sellers SHOULD reject duplicate (keyword, match_type) pairs within a single request. Seller must declare support in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
-    property_list: Annotated[
-        property_list_ref.PropertyListReference | None,
-        Field(
-            description="Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false."
-        ),
-    ] = None
-    store_catchments: Annotated[
-        list[StoreCatchment] | None,
+    negative_keywords: Annotated[
+        list[NegativeKeyword] | None,
         Field(
-            description='Target users within store catchment areas from a synced store catalog. Each entry references a store-type catalog and optionally narrows to specific stores or catchment zones.',
+            description='Keywords to exclude from delivery. Queries matching these keywords will not trigger the ad. Each negative keyword is identified by the tuple (keyword, match_type). Seller must declare support in get_adcp_capabilities.',
             min_length=1,
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/core/tasks_get_request.py b/src/adcp/types/generated_poc/core/tasks_get_request.py
new file mode 100644
index 000000000..7cda787ff
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/tasks_get_request.py
@@ -0,0 +1,36 @@
+# generated by datamodel-codegen:
+#   filename:  core/tasks_get_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from . import context as context_1
+from . import ext as ext_1
+
+
+class TasksGetRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    task_id: Annotated[str, Field(description='Unique identifier of the task to retrieve')]
+    include_history: Annotated[
+        bool | None,
+        Field(
+            description='Include full conversation history for this task (may increase response size)'
+        ),
+    ] = False
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/tasks_get_response.py b/src/adcp/types/generated_poc/core/tasks_get_response.py
new file mode 100644
index 000000000..25d6214cf
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/tasks_get_response.py
@@ -0,0 +1,109 @@
+# generated by datamodel-codegen:
+#   filename:  core/tasks_get_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..enums import adcp_protocol, task_status
+from ..enums import task_type as task_type_1
+from . import context as context_1
+from . import ext as ext_1
+
+
+class Progress(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    percentage: Annotated[
+        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
+    ] = None
+    current_step: Annotated[
+        str | None, Field(description='Current step or phase of the operation')
+    ] = None
+    total_steps: Annotated[
+        int | None, Field(description='Total number of steps in the operation', ge=1)
+    ] = None
+    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+
+
+class Details(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    protocol: Annotated[
+        adcp_protocol.AdcpProtocol | None, Field(description='AdCP protocol where error occurred')
+    ] = None
+    operation: Annotated[str | None, Field(description='Specific operation that failed')] = None
+    specific_context: Annotated[
+        dict[str, Any] | None, Field(description='Domain-specific error context')
+    ] = None
+
+
+class Error(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    code: Annotated[str, Field(description='Error code for programmatic handling')]
+    message: Annotated[str, Field(description='Detailed error message')]
+    details: Annotated[Details | None, Field(description='Additional error context')] = None
+
+
+class Type(Enum):
+    request = 'request'
+    response = 'response'
+
+
+class HistoryItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    timestamp: Annotated[AwareDatetime, Field(description='When this exchange occurred (ISO 8601)')]
+    type: Annotated[
+        Type, Field(description='Whether this was a request from client or response from server')
+    ]
+    data: Annotated[dict[str, Any], Field(description='The full request or response payload')]
+
+
+class TasksGetResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    task_id: Annotated[str, Field(description='Unique identifier for this task')]
+    task_type: Annotated[task_type_1.TaskType, Field(description='Type of AdCP operation')]
+    protocol: Annotated[
+        adcp_protocol.AdcpProtocol, Field(description='AdCP protocol this task belongs to')
+    ]
+    status: Annotated[task_status.TaskStatus, Field(description='Current task status')]
+    created_at: Annotated[
+        AwareDatetime, Field(description='When the task was initially created (ISO 8601)')
+    ]
+    updated_at: Annotated[
+        AwareDatetime, Field(description='When the task was last updated (ISO 8601)')
+    ]
+    completed_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When the task completed (ISO 8601, only for completed/failed/canceled tasks)'
+        ),
+    ] = None
+    has_webhook: Annotated[
+        bool | None, Field(description='Whether this task has webhook configuration')
+    ] = None
+    progress: Annotated[
+        Progress | None, Field(description='Progress information for long-running tasks')
+    ] = None
+    error: Annotated[Error | None, Field(description='Error details for failed tasks')] = None
+    history: Annotated[
+        list[HistoryItem] | None,
+        Field(
+            description='Complete conversation history for this task (only included if include_history was true in request)'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/tasks_list_request.py b/src/adcp/types/generated_poc/core/tasks_list_request.py
new file mode 100644
index 000000000..d8f13360c
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/tasks_list_request.py
@@ -0,0 +1,116 @@
+# generated by datamodel-codegen:
+#   filename:  core/tasks_list_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..enums import adcp_protocol, sort_direction, task_status
+from ..enums import task_type as task_type_1
+from . import context as context_1
+from . import ext as ext_1
+from . import pagination_request
+
+
+class Filters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    protocol: Annotated[
+        adcp_protocol.AdcpProtocol | None, Field(description='Filter by single AdCP protocol')
+    ] = None
+    protocols: Annotated[
+        list[adcp_protocol.AdcpProtocol] | None,
+        Field(description='Filter by multiple AdCP protocols', min_length=1),
+    ] = None
+    status: Annotated[
+        task_status.TaskStatus | None, Field(description='Filter by single task status')
+    ] = None
+    statuses: Annotated[
+        list[task_status.TaskStatus] | None,
+        Field(description='Filter by multiple task statuses', min_length=1),
+    ] = None
+    task_type: Annotated[
+        task_type_1.TaskType | None, Field(description='Filter by single task type')
+    ] = None
+    task_types: Annotated[
+        list[task_type_1.TaskType] | None,
+        Field(description='Filter by multiple task types', min_length=1),
+    ] = None
+    created_after: Annotated[
+        AwareDatetime | None, Field(description='Filter tasks created after this date (ISO 8601)')
+    ] = None
+    created_before: Annotated[
+        AwareDatetime | None, Field(description='Filter tasks created before this date (ISO 8601)')
+    ] = None
+    updated_after: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter tasks last updated after this date (ISO 8601)'),
+    ] = None
+    updated_before: Annotated[
+        AwareDatetime | None,
+        Field(description='Filter tasks last updated before this date (ISO 8601)'),
+    ] = None
+    task_ids: Annotated[
+        list[str] | None,
+        Field(description='Filter by specific task IDs', max_length=100, min_length=1),
+    ] = None
+    context_contains: Annotated[
+        str | None,
+        Field(
+            description='Filter tasks where context contains this text (searches media_buy_id, signal_id, etc.)'
+        ),
+    ] = None
+    has_webhook: Annotated[
+        bool | None, Field(description='Filter tasks that have webhook configuration when true')
+    ] = None
+
+
+class Field1(Enum):
+    created_at = 'created_at'
+    updated_at = 'updated_at'
+    status = 'status'
+    task_type = 'task_type'
+    protocol = 'protocol'
+
+
+class Sort(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    field: Annotated[Field1 | None, Field(description='Field to sort by')] = Field1.created_at
+    direction: Annotated[
+        sort_direction.SortDirection | None, Field(description='Sort direction')
+    ] = sort_direction.SortDirection.desc
+
+
+class TasksListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    filters: Annotated[Filters | None, Field(description='Filter criteria for querying tasks')] = (
+        None
+    )
+    sort: Annotated[Sort | None, Field(description='Sorting parameters')] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    include_history: Annotated[
+        bool | None,
+        Field(
+            description='Include full conversation history for each task (may significantly increase response size)'
+        ),
+    ] = False
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/tasks_list_response.py b/src/adcp/types/generated_poc/core/tasks_list_response.py
new file mode 100644
index 000000000..5fa0c5d37
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/tasks_list_response.py
@@ -0,0 +1,111 @@
+# generated by datamodel-codegen:
+#   filename:  core/tasks_list_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..enums import task_status
+from ..enums import task_type as task_type_1
+from . import context as context_1
+from . import ext as ext_1
+from . import pagination_response
+
+
+class DomainBreakdown(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    media_buy: Annotated[
+        int | None,
+        Field(alias='media-buy', description='Number of media-buy tasks in results', ge=0),
+    ] = None
+    signals: Annotated[
+        int | None, Field(description='Number of signals tasks in results', ge=0)
+    ] = None
+
+
+class Direction(Enum):
+    asc = 'asc'
+    desc = 'desc'
+
+
+class SortApplied(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    field: str
+    direction: Direction
+
+
+class QuerySummary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    total_matching: Annotated[
+        int | None,
+        Field(description='Total number of tasks matching filters (across all pages)', ge=0),
+    ] = None
+    returned: Annotated[
+        int | None, Field(description='Number of tasks returned in this response', ge=0)
+    ] = None
+    domain_breakdown: Annotated[
+        DomainBreakdown | None, Field(description='Count of tasks by domain')
+    ] = None
+    status_breakdown: Annotated[
+        dict[str, int] | None, Field(description='Count of tasks by status')
+    ] = None
+    filters_applied: Annotated[
+        list[str] | None, Field(description='List of filters that were applied to the query')
+    ] = None
+    sort_applied: Annotated[
+        SortApplied | None, Field(description='Sort order that was applied')
+    ] = None
+
+
+class Domain(Enum):
+    media_buy = 'media-buy'
+    signals = 'signals'
+
+
+class Task(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    task_id: Annotated[str, Field(description='Unique identifier for this task')]
+    task_type: Annotated[task_type_1.TaskType, Field(description='Type of AdCP operation')]
+    domain: Annotated[Domain, Field(description='AdCP domain this task belongs to')]
+    status: Annotated[task_status.TaskStatus, Field(description='Current task status')]
+    created_at: Annotated[
+        AwareDatetime, Field(description='When the task was initially created (ISO 8601)')
+    ]
+    updated_at: Annotated[
+        AwareDatetime, Field(description='When the task was last updated (ISO 8601)')
+    ]
+    completed_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When the task completed (ISO 8601, only for completed/failed/canceled tasks)'
+        ),
+    ] = None
+    has_webhook: Annotated[
+        bool | None, Field(description='Whether this task has webhook configuration')
+    ] = None
+
+
+class TasksListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    query_summary: Annotated[
+        QuerySummary, Field(description='Summary of the query that was executed')
+    ]
+    tasks: Annotated[list[Task], Field(description='Array of tasks matching the query criteria')]
+    pagination: pagination_response.PaginationResponse
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/user_match.py b/src/adcp/types/generated_poc/core/user_match.py
index 1395d203c..ddb13067e 100644
--- a/src/adcp/types/generated_poc/core/user_match.py
+++ b/src/adcp/types/generated_poc/core/user_match.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/user_match.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -25,21 +25,9 @@ class UserMatch(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    click_id: Annotated[
-        str | None,
-        Field(description='Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)'),
-    ] = None
-    click_id_type: Annotated[
-        str | None,
-        Field(description='Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)'),
-    ] = None
-    client_ip: Annotated[
-        str | None, Field(description='Client IP address for probabilistic matching')
-    ] = None
-    client_user_agent: Annotated[
-        str | None, Field(description='Client user agent string for probabilistic matching')
+    uids: Annotated[
+        list[Uid] | None, Field(description='Universal ID values for user matching', min_length=1)
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     hashed_email: Annotated[
         str | None,
         Field(
@@ -54,6 +42,18 @@ class UserMatch(AdCPBaseModel):
             pattern='^[a-f0-9]{64}$',
         ),
     ] = None
-    uids: Annotated[
-        list[Uid] | None, Field(description='Universal ID values for user matching', min_length=1)
+    click_id: Annotated[
+        str | None,
+        Field(description='Platform click identifier (fbclid, gclid, ttclid, ScCid, etc.)'),
+    ] = None
+    click_id_type: Annotated[
+        str | None,
+        Field(description='Type of click identifier (e.g. fbclid, gclid, ttclid, msclkid, ScCid)'),
+    ] = None
+    client_ip: Annotated[
+        str | None, Field(description='Client IP address for probabilistic matching')
     ] = None
+    client_user_agent: Annotated[
+        str | None, Field(description='Client user agent string for probabilistic matching')
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/vehicle_item.py b/src/adcp/types/generated_poc/core/vehicle_item.py
index 183361137..96afe6dd1 100644
--- a/src/adcp/types/generated_poc/core/vehicle_item.py
+++ b/src/adcp/types/generated_poc/core/vehicle_item.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/vehicle_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,6 +15,25 @@
 from . import price as price_1
 
 
+class Condition(Enum):
+    new = 'new'
+    used = 'used'
+    certified_pre_owned = 'certified_pre_owned'
+
+
+class Unit(Enum):
+    km = 'km'
+    mi = 'mi'
+
+
+class Mileage(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[float, Field(description='Mileage value.', ge=0.0)]
+    unit: Annotated[Unit, Field(description='Distance unit.')]
+
+
 class BodyStyle(Enum):
     sedan = 'sedan'
     suv = 'suv'
@@ -26,10 +45,10 @@ class BodyStyle(Enum):
     hatchback = 'hatchback'
 
 
-class Condition(Enum):
-    new = 'new'
-    used = 'used'
-    certified_pre_owned = 'certified_pre_owned'
+class Transmission(Enum):
+    automatic = 'automatic'
+    manual = 'manual'
+    cvt = 'cvt'
 
 
 class FuelType(Enum):
@@ -52,48 +71,32 @@ class Location(AdCPBaseModel):
     ]
 
 
-class Unit(Enum):
-    km = 'km'
-    mi = 'mi'
-
-
-class Mileage(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    unit: Annotated[Unit, Field(description='Distance unit.')]
-    value: Annotated[float, Field(description='Mileage value.', ge=0.0)]
-
-
-class Transmission(Enum):
-    automatic = 'automatic'
-    manual = 'manual'
-    cvt = 'cvt'
-
-
 class VehicleItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    assets: Annotated[
-        list[offering_asset_group.OfferingAssetGroup] | None,
-        Field(
-            description="Typed creative asset pools for this vehicle. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
-            min_length=1,
-        ),
+    vehicle_id: Annotated[str, Field(description='Unique identifier for this vehicle listing.')]
+    title: Annotated[str, Field(description="Listing title (e.g., '2024 Honda Civic EX Sedan').")]
+    make: Annotated[str, Field(description="Vehicle manufacturer (e.g., 'Honda', 'Ford', 'BMW').")]
+    model: Annotated[str, Field(description="Vehicle model (e.g., 'Civic', 'F-150', 'X5').")]
+    year: Annotated[int, Field(description='Model year.', ge=1900)]
+    price: Annotated[price_1.Price | None, Field(description='Vehicle price.')] = None
+    condition: Annotated[Condition | None, Field(description='Vehicle condition.')] = None
+    vin: Annotated[
+        str | None, Field(description='Vehicle Identification Number (17-character VIN).')
+    ] = None
+    trim: Annotated[
+        str | None, Field(description="Trim level (e.g., 'EX', 'Limited', 'Sport').")
     ] = None
+    mileage: Annotated[Mileage | None, Field(description='Odometer reading.')] = None
     body_style: Annotated[BodyStyle | None, Field(description='Vehicle body style.')] = None
-    condition: Annotated[Condition | None, Field(description='Vehicle condition.')] = None
-    ext: ext_1.ExtensionObject | None = None
-    exterior_color: Annotated[str | None, Field(description='Exterior color.')] = None
+    transmission: Annotated[Transmission | None, Field(description='Transmission type.')] = None
     fuel_type: Annotated[FuelType | None, Field(description='Fuel or powertrain type.')] = None
-    image_url: Annotated[AnyUrl | None, Field(description='Primary vehicle image URL.')] = None
+    exterior_color: Annotated[str | None, Field(description='Exterior color.')] = None
     interior_color: Annotated[str | None, Field(description='Interior color.')] = None
     location: Annotated[Location | None, Field(description='Dealer or vehicle location.')] = None
-    make: Annotated[str, Field(description="Vehicle manufacturer (e.g., 'Honda', 'Ford', 'BMW').")]
-    mileage: Annotated[Mileage | None, Field(description='Odometer reading.')] = None
-    model: Annotated[str, Field(description="Vehicle model (e.g., 'Civic', 'F-150', 'X5').")]
-    price: Annotated[price_1.Price | None, Field(description='Vehicle price.')] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Primary vehicle image URL.')] = None
+    url: Annotated[AnyUrl | None, Field(description='Vehicle listing page URL.')] = None
     tags: Annotated[
         list[str] | None,
         Field(
@@ -101,14 +104,11 @@ class VehicleItem(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    title: Annotated[str, Field(description="Listing title (e.g., '2024 Honda Civic EX Sedan').")]
-    transmission: Annotated[Transmission | None, Field(description='Transmission type.')] = None
-    trim: Annotated[
-        str | None, Field(description="Trim level (e.g., 'EX', 'Limited', 'Sport').")
-    ] = None
-    url: Annotated[AnyUrl | None, Field(description='Vehicle listing page URL.')] = None
-    vehicle_id: Annotated[str, Field(description='Unique identifier for this vehicle listing.')]
-    vin: Annotated[
-        str | None, Field(description='Vehicle Identification Number (17-character VIN).')
+    assets: Annotated[
+        list[offering_asset_group.OfferingAssetGroup] | None,
+        Field(
+            description="Typed creative asset pools for this vehicle. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
+            min_length=1,
+        ),
     ] = None
-    year: Annotated[int, Field(description='Model year.', ge=1900)]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/vendor_pricing_option.py b/src/adcp/types/generated_poc/core/vendor_pricing_option.py
new file mode 100644
index 000000000..8d613fa16
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/vendor_pricing_option.py
@@ -0,0 +1,124 @@
+# generated by datamodel-codegen:
+#   filename:  core/vendor_pricing_option.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Any, Annotated, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field, RootModel
+
+from . import ext as ext_1
+
+
+class VendorPricingOption1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['cpm']
+    cpm: Annotated[float, Field(description='Cost per thousand impressions', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: ext_1.ExtensionObject | None = None
+
+
+class VendorPricingOption2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['percent_of_media']
+    percent: Annotated[
+        float, Field(description='Percentage of media spend, e.g. 15 = 15%', ge=0.0, le=100.0)
+    ]
+    max_cpm: Annotated[
+        float | None,
+        Field(
+            description='Optional CPM cap. When set, the effective charge is min(percent × media_spend_per_mille, max_cpm).',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str,
+        Field(description='ISO 4217 currency code for the resulting charge', pattern='^[A-Z]{3}$'),
+    ]
+    ext: ext_1.ExtensionObject | None = None
+
+
+class Period(Enum):
+    monthly = 'monthly'
+    quarterly = 'quarterly'
+    annual = 'annual'
+    campaign = 'campaign'
+
+
+class VendorPricingOption3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['flat_fee']
+    amount: Annotated[float, Field(description='Fixed charge for the billing period', ge=0.0)]
+    period: Annotated[Period, Field(description='Billing period for the flat fee.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: ext_1.ExtensionObject | None = None
+
+
+class VendorPricingOption4(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    model: Literal['per_unit']
+    unit: Annotated[
+        str,
+        Field(
+            description="What is counted — e.g. 'format', 'image', 'token', 'variant', 'render', 'evaluation'."
+        ),
+    ]
+    unit_price: Annotated[float, Field(description='Cost per one unit', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    ext: ext_1.ExtensionObject | None = None
+
+
+class VendorPricingOption5(AdCPBaseModel):
+    pricing_option_id: Annotated[
+        str,
+        Field(
+            description='Opaque identifier for this pricing option, unique within the vendor agent. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ]
+
+
+class VendorPricingOption6(VendorPricingOption1, VendorPricingOption5):
+    pass
+
+
+class VendorPricingOption7(VendorPricingOption2, VendorPricingOption5):
+    pass
+
+
+class VendorPricingOption8(VendorPricingOption3, VendorPricingOption5):
+    pass
+
+
+class VendorPricingOption9(VendorPricingOption4, VendorPricingOption5):
+    pass
+
+
+class VendorPricingOption(
+    RootModel[
+        VendorPricingOption6 | VendorPricingOption7 | VendorPricingOption8 | VendorPricingOption9
+    ]
+):
+    root: Annotated[
+        VendorPricingOption6 | VendorPricingOption7 | VendorPricingOption8 | VendorPricingOption9,
+        Field(
+            description='A pricing option offered by a vendor agent (signals, creative, governance). Combines pricing_option_id with the pricing model fields. Pass pricing_option_id in report_usage for billing verification. All vendor discovery responses return pricing_options as an array — vendors may offer multiple options (volume tiers, context-specific rates, different models per product line).',
+            title='Vendor Pricing Option',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
diff --git a/src/adcp/types/generated_poc/creative/creative_feature_result.py b/src/adcp/types/generated_poc/creative/creative_feature_result.py
index af213ca09..7c6f9aef6 100644
--- a/src/adcp/types/generated_poc/creative/creative_feature_result.py
+++ b/src/adcp/types/generated_poc/creative/creative_feature_result.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/creative_feature_result.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,39 +16,45 @@ class CreativeFeatureResult(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    confidence: Annotated[
-        float | None, Field(description='Confidence score for this value (0-1)', ge=0.0, le=1.0)
-    ] = None
-    details: Annotated[
-        dict[str, Any] | None,
-        Field(description='Additional vendor-specific details about this evaluation'),
-    ] = None
-    expires_at: Annotated[
-        AwareDatetime | None,
-        Field(description='When this evaluation expires and should be refreshed'),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     feature_id: Annotated[
         str,
         Field(
             description="The feature that was evaluated (e.g., 'auto_redirect', 'brand_consistency'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:eu_ai_act_article_50'). Unprefixed feature IDs are agent-defined."
         ),
     ]
+    value: Annotated[
+        bool | float | str,
+        Field(
+            description='The feature value. Type depends on feature definition: boolean for binary, number for quantitative, string for categorical.'
+        ),
+    ]
+    unit: Annotated[
+        str | None,
+        Field(
+            description="Unit of measurement for quantitative values (e.g., 'percentage', 'score')"
+        ),
+    ] = None
+    confidence: Annotated[
+        float | None, Field(description='Confidence score for this value (0-1)', ge=0.0, le=1.0)
+    ] = None
     measured_at: Annotated[
         AwareDatetime | None, Field(description='When this feature was evaluated')
     ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(description='When this evaluation expires and should be refreshed'),
+    ] = None
     methodology_version: Annotated[
         str | None, Field(description='Version of the methodology used to evaluate this feature')
     ] = None
-    unit: Annotated[
+    details: Annotated[
+        dict[str, Any] | None,
+        Field(description='Additional vendor-specific details about this evaluation'),
+    ] = None
+    policy_id: Annotated[
         str | None,
         Field(
-            description="Unit of measurement for quantitative values (e.g., 'percentage', 'score')"
+            description='Optional attribution — when this feature was evaluated to satisfy a specific policy, policy_id references the authorizing PolicyEntry. Reserved field; populated by producers in 3.1 and later (see issue #2303). Governance agents MAY ignore in 3.0.'
         ),
     ] = None
-    value: Annotated[
-        bool | float | str,
-        Field(
-            description='The feature value. Type depends on feature definition: boolean for binary, number for quantitative, string for categorical.'
-        ),
-    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/get_creative_delivery_request.py b/src/adcp/types/generated_poc/creative/get_creative_delivery_request.py
index 851424a72..7e83b853f 100644
--- a/src/adcp/types/generated_poc/creative/get_creative_delivery_request.py
+++ b/src/adcp/types/generated_poc/creative/get_creative_delivery_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/get_creative_delivery_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,13 +19,27 @@ class GetCreativeDeliveryRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     account: Annotated[
         account_ref.AccountReference | None,
         Field(
             description='Account for routing and scoping. Limits results to creatives within this account.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
+    media_buy_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter to specific media buys by publisher ID. If omitted, returns creative delivery across all matching media buys.',
+            min_length=1,
+        ),
+    ] = None
     creative_ids: Annotated[
         list[str] | None,
         Field(
@@ -33,6 +47,13 @@ class GetCreativeDeliveryRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    start_date: Annotated[
+        str | None,
+        Field(
+            description="Start date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone.",
+            pattern='^\\d{4}-\\d{2}-\\d{2}$',
+        ),
+    ] = None
     end_date: Annotated[
         str | None,
         Field(
@@ -40,7 +61,6 @@ class GetCreativeDeliveryRequest(AdCPBaseModel):
             pattern='^\\d{4}-\\d{2}-\\d{2}$',
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     max_variants: Annotated[
         int | None,
         Field(
@@ -48,23 +68,11 @@ class GetCreativeDeliveryRequest(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    media_buy_ids: Annotated[
-        list[str] | None,
-        Field(
-            description='Filter to specific media buys by publisher ID. If omitted, returns creative delivery across all matching media buys.',
-            min_length=1,
-        ),
-    ] = None
     pagination: Annotated[
         pagination_request.PaginationRequest | None,
         Field(
             description='Pagination parameters for the creatives array in the response. Uses cursor-based pagination consistent with other list operations.'
         ),
     ] = None
-    start_date: Annotated[
-        str | None,
-        Field(
-            description="Start date for delivery period (YYYY-MM-DD). Interpreted in the platform's reporting timezone.",
-            pattern='^\\d{4}-\\d{2}-\\d{2}$',
-        ),
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/get_creative_delivery_response.py b/src/adcp/types/generated_poc/creative/get_creative_delivery_response.py
index 169bea230..96517a1a8 100644
--- a/src/adcp/types/generated_poc/creative/get_creative_delivery_response.py
+++ b/src/adcp/types/generated_poc/creative/get_creative_delivery_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/get_creative_delivery_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,27 +15,12 @@
 from ..core import format_id as format_id_1
 
 
-class Pagination(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    has_more: Annotated[
-        bool, Field(description='Whether more creatives are available beyond this page')
-    ]
-    limit: Annotated[int, Field(description='Maximum number of creatives requested', ge=1)]
-    offset: Annotated[int, Field(description='Number of creatives skipped', ge=0)]
-    total: Annotated[
-        int | None,
-        Field(description='Total number of creatives matching the request filters', ge=0),
-    ] = None
-
-
 class ReportingPeriod(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    end: Annotated[AwareDatetime, Field(description='ISO 8601 end timestamp')]
     start: Annotated[AwareDatetime, Field(description='ISO 8601 start timestamp')]
+    end: Annotated[AwareDatetime, Field(description='ISO 8601 end timestamp')]
     timezone: Annotated[
         str | None,
         Field(
@@ -44,20 +29,35 @@ class ReportingPeriod(AdCPBaseModel):
     ] = None
 
 
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    limit: Annotated[int, Field(description='Maximum number of creatives requested', ge=1)]
+    offset: Annotated[int, Field(description='Number of creatives skipped', ge=0)]
+    has_more: Annotated[
+        bool, Field(description='Whether more creatives are available beyond this page')
+    ]
+    total: Annotated[
+        int | None,
+        Field(description='Total number of creatives matching the request filters', ge=0),
+    ] = None
+
+
 class Creative(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
     creative_id: Annotated[str, Field(description='Creative identifier')]
-    format_id: Annotated[
-        format_id_1.FormatId | None, Field(description='Format of this creative')
-    ] = None
     media_buy_id: Annotated[
         str | None,
         Field(
             description="Publisher's media buy identifier for this creative. Present when the request spanned multiple media buys, so the buyer can correlate each creative to its media buy."
         ),
     ] = None
+    format_id: Annotated[
+        format_id_1.FormatId | None, Field(description='Format of this creative')
+    ] = None
     totals: Annotated[
         delivery_metrics.DeliveryMetrics | None,
         Field(description='Aggregate delivery metrics across all variants of this creative'),
@@ -87,10 +87,12 @@ class GetCreativeDeliveryResponse(AdCPBaseModel):
             description='Account identifier. Present when the response spans or is scoped to a specific account.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    creatives: Annotated[
-        list[Creative], Field(description='Creative delivery data with variant breakdowns')
-    ]
+    media_buy_id: Annotated[
+        str | None,
+        Field(
+            description="Publisher's media buy identifier. Present when the request was scoped to a single media buy."
+        ),
+    ] = None
     currency: Annotated[
         str,
         Field(
@@ -98,20 +100,18 @@ class GetCreativeDeliveryResponse(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    errors: Annotated[
-        list[error.Error] | None, Field(description='Task-specific errors and warnings')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    media_buy_id: Annotated[
-        str | None,
-        Field(
-            description="Publisher's media buy identifier. Present when the request was scoped to a single media buy."
-        ),
-    ] = None
+    reporting_period: Annotated[ReportingPeriod, Field(description='Date range for the report.')]
+    creatives: Annotated[
+        list[Creative], Field(description='Creative delivery data with variant breakdowns')
+    ]
     pagination: Annotated[
         Pagination | None,
         Field(
             description='Pagination information. Present when the request included pagination parameters.'
         ),
     ] = None
-    reporting_period: Annotated[ReportingPeriod, Field(description='Date range for the report.')]
+    errors: Annotated[
+        list[error.Error] | None, Field(description='Task-specific errors and warnings')
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/get_creative_features_request.py b/src/adcp/types/generated_poc/creative/get_creative_features_request.py
index fe7542e1d..b653a9b4a 100644
--- a/src/adcp/types/generated_poc/creative/get_creative_features_request.py
+++ b/src/adcp/types/generated_poc/creative/get_creative_features_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/get_creative_features_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,18 +19,18 @@ class GetCreativeFeaturesRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    account: Annotated[
-        account_ref.AccountReference | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Account for billing this evaluation. Required when the governance agent charges per evaluation.'
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     creative_manifest: Annotated[
         creative_manifest_1.CreativeManifest,
         Field(description='The creative manifest to evaluate. Contains format_id and assets.'),
     ]
-    ext: ext_1.ExtensionObject | None = None
     feature_ids: Annotated[
         list[str] | None,
         Field(
@@ -38,3 +38,11 @@ class GetCreativeFeaturesRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    account: Annotated[
+        account_ref.AccountReference | None,
+        Field(
+            description='Account for billing this evaluation. Required when the governance agent charges per evaluation.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/get_creative_features_response.py b/src/adcp/types/generated_poc/creative/get_creative_features_response.py
index 25d384c2b..13d06272a 100644
--- a/src/adcp/types/generated_poc/creative/get_creative_features_response.py
+++ b/src/adcp/types/generated_poc/creative/get_creative_features_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/get_creative_features_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,30 +10,50 @@
 from pydantic import AnyUrl, Field
 
 from ..core import context as context_1
-from ..core import error
+from ..core import creative_consumption, error
 from ..core import ext as ext_1
 from . import creative_feature_result
 
 
 class GetCreativeFeaturesResponse2(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
     errors: list[error.Error]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
 class GetCreativeFeaturesResponse1(AdCPBaseModel):
-    context: context_1.ContextObject | None = None
+    results: Annotated[
+        list[creative_feature_result.CreativeFeatureResult],
+        Field(description='Feature values for the evaluated creative'),
+    ]
     detail_url: Annotated[
         AnyUrl | None,
         Field(
             description="URL to the vendor's full assessment report. The vendor controls what information is disclosed and access control."
         ),
     ] = None
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description='Which rate card pricing option was applied for this evaluation. Present when the governance agent charges for evaluations and account was provided in the request.'
+        ),
+    ] = None
+    vendor_cost: Annotated[
+        float | None,
+        Field(description='Cost incurred for this evaluation, denominated in currency.', ge=0.0),
+    ] = None
+    currency: Annotated[
+        str | None,
+        Field(description='ISO 4217 currency code for vendor_cost.', pattern='^[A-Z]{3}$'),
+    ] = None
+    consumption: Annotated[
+        creative_consumption.CreativeConsumption | None,
+        Field(
+            description='Structured consumption details for this evaluation. Informational — lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    results: Annotated[
-        list[creative_feature_result.CreativeFeatureResult],
-        Field(description='Feature values for the evaluated creative'),
-    ]
 
 
 GetCreativeFeaturesResponse = GetCreativeFeaturesResponse1 | GetCreativeFeaturesResponse2
diff --git a/src/adcp/types/generated_poc/creative/list_creative_formats_request.py b/src/adcp/types/generated_poc/creative/list_creative_formats_request.py
index 55c51d5d8..a960fcca6 100644
--- a/src/adcp/types/generated_poc/creative/list_creative_formats_request.py
+++ b/src/adcp/types/generated_poc/creative/list_creative_formats_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/list_creative_formats_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,6 +10,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import account_ref
 from ..core import context as context_1
 from ..core import ext as ext_1
 from ..core import format_id, pagination_request
@@ -18,6 +19,13 @@
 from ..enums import wcag_level as wcag_level_1
 
 
+class Type(Enum):
+    audio = 'audio'
+    video = 'video'
+    display = 'display'
+    dooh = 'dooh'
+
+
 class AssetType(Enum):
     image = 'image'
     video = 'video'
@@ -28,55 +36,39 @@ class AssetType(Enum):
     url = 'url'
 
 
-class Type(Enum):
-    audio = 'audio'
-    video = 'video'
-    display = 'display'
-    dooh = 'dooh'
-
-
 class ListCreativeFormatsRequestCreativeAgent(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_types: Annotated[
-        list[AssetType] | None,
-        Field(
-            description="Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
-            min_length=1,
-        ),
-    ] = None
-    context: context_1.ContextObject | None = None
-    disclosure_persistence: Annotated[
-        list[disclosure_persistence_1.DisclosurePersistence] | None,
-        Field(
-            description='Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).',
-            min_length=1,
-        ),
-    ] = None
-    disclosure_positions: Annotated[
-        list[disclosure_position.DisclosurePosition] | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description="Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
-            min_length=1,
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     format_ids: Annotated[
         list[format_id.FormatId] | None,
         Field(description='Return only these specific format IDs', min_length=1),
     ] = None
-    input_format_ids: Annotated[
-        list[format_id.FormatId] | None,
+    type: Annotated[
+        Type | None,
         Field(
-            description="Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input — inspect each result's output_format_ids to see what they can produce.",
+            description='Filter by format type (technical categories with distinct requirements)'
+        ),
+    ] = None
+    asset_types: Annotated[
+        list[AssetType] | None,
+        Field(
+            description="Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
             min_length=1,
         ),
     ] = None
-    is_responsive: Annotated[
-        bool | None,
+    max_width: Annotated[
+        int | None,
         Field(
-            description='Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.'
+            description='Maximum width in pixels (inclusive). Returns formats with width <= this value. Omit for responsive/fluid formats.'
         ),
     ] = None
     max_height: Annotated[
@@ -85,10 +77,10 @@ class ListCreativeFormatsRequestCreativeAgent(AdCPBaseModel):
             description='Maximum height in pixels (inclusive). Returns formats with height <= this value. Omit for responsive/fluid formats.'
         ),
     ] = None
-    max_width: Annotated[
+    min_width: Annotated[
         int | None,
         Field(
-            description='Maximum width in pixels (inclusive). Returns formats with width <= this value. Omit for responsive/fluid formats.'
+            description='Minimum width in pixels (inclusive). Returns formats with width >= this value.'
         ),
     ] = None
     min_height: Annotated[
@@ -97,15 +89,35 @@ class ListCreativeFormatsRequestCreativeAgent(AdCPBaseModel):
             description='Minimum height in pixels (inclusive). Returns formats with height >= this value.'
         ),
     ] = None
-    min_width: Annotated[
-        int | None,
+    is_responsive: Annotated[
+        bool | None,
         Field(
-            description='Minimum width in pixels (inclusive). Returns formats with width >= this value.'
+            description='Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.'
         ),
     ] = None
     name_search: Annotated[
         str | None, Field(description='Search for formats by name (case-insensitive partial match)')
     ] = None
+    wcag_level: Annotated[
+        wcag_level_1.WcagLevel | None,
+        Field(
+            description='Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)'
+        ),
+    ] = None
+    disclosure_positions: Annotated[
+        list[disclosure_position.DisclosurePosition] | None,
+        Field(
+            description="Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
+            min_length=1,
+        ),
+    ] = None
+    disclosure_persistence: Annotated[
+        list[disclosure_persistence_1.DisclosurePersistence] | None,
+        Field(
+            description='Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).',
+            min_length=1,
+        ),
+    ] = None
     output_format_ids: Annotated[
         list[format_id.FormatId] | None,
         Field(
@@ -113,16 +125,25 @@ class ListCreativeFormatsRequestCreativeAgent(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    pagination: pagination_request.PaginationRequest | None = None
-    type: Annotated[
-        Type | None,
+    input_format_ids: Annotated[
+        list[format_id.FormatId] | None,
         Field(
-            description='Filter by format type (technical categories with distinct requirements)'
+            description="Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input — inspect each result's output_format_ids to see what they can produce.",
+            min_length=1,
         ),
     ] = None
-    wcag_level: Annotated[
-        wcag_level_1.WcagLevel | None,
+    include_pricing: Annotated[
+        bool | None,
         Field(
-            description='Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)'
+            description='Include pricing_options on each format. Used by transformation and generation agents that charge per format or per unit of work. Requires account. When false or omitted, pricing is not computed.'
+        ),
+    ] = False
+    account: Annotated[
+        account_ref.AccountReference | None,
+        Field(
+            description="Account reference for pricing. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each format."
         ),
     ] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/list_creative_formats_response.py b/src/adcp/types/generated_poc/creative/list_creative_formats_response.py
index 8d3001634..53b0d25ce 100644
--- a/src/adcp/types/generated_poc/creative/list_creative_formats_response.py
+++ b/src/adcp/types/generated_poc/creative/list_creative_formats_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/list_creative_formats_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,15 +17,15 @@
 
 
 class CreativeAgent(AdCPBaseModel):
-    agent_name: Annotated[
-        str | None, Field(description='Human-readable name for the creative agent')
-    ] = None
     agent_url: Annotated[
         AnyUrl,
         Field(
             description="Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
         ),
     ]
+    agent_name: Annotated[
+        str | None, Field(description='Human-readable name for the creative agent')
+    ] = None
     capabilities: Annotated[
         list[creative_agent_capability.CreativeAgentCapability] | None,
         Field(description='Capabilities this creative agent provides'),
@@ -36,7 +36,12 @@ class ListCreativeFormatsResponseCreativeAgent(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    formats: Annotated[
+        list[format.Format],
+        Field(
+            description="Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field."
+        ),
+    ]
     creative_agents: Annotated[
         list[CreativeAgent] | None,
         Field(
@@ -46,11 +51,6 @@ class ListCreativeFormatsResponseCreativeAgent(AdCPBaseModel):
     errors: Annotated[
         list[error.Error] | None, Field(description='Task-specific errors and warnings')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    formats: Annotated[
-        list[format.Format],
-        Field(
-            description="Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field."
-        ),
-    ]
     pagination: pagination_response.PaginationResponse | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/list_creatives_request.py b/src/adcp/types/generated_poc/creative/list_creatives_request.py
index ff21f413e..1265f3486 100644
--- a/src/adcp/types/generated_poc/creative/list_creatives_request.py
+++ b/src/adcp/types/generated_poc/creative/list_creatives_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/list_creatives_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,6 +10,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import account_ref
 from ..core import context as context_1
 from ..core import creative_filters
 from ..core import ext as ext_1
@@ -30,52 +31,73 @@ class Field1(Enum):
     items = 'items'
     variables = 'variables'
     concept = 'concept'
+    pricing_options = 'pricing_options'
 
 
 class Sort(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    direction: Annotated[
-        sort_direction.SortDirection | None, Field(description='Sort direction')
-    ] = sort_direction.SortDirection.desc
     field: Annotated[
         creative_sort_field.CreativeSortField | None, Field(description='Field to sort by')
     ] = creative_sort_field.CreativeSortField.created_date
+    direction: Annotated[
+        sort_direction.SortDirection | None, Field(description='Sort direction')
+    ] = sort_direction.SortDirection.desc
 
 
 class ListCreativesRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    fields: Annotated[
-        list[Field1] | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description="Specific fields to include in response (omit for all fields). The 'concept' value returns both concept_id and concept_name.",
-            min_length=1,
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
     filters: creative_filters.CreativeFilters | None = None
+    sort: Annotated[Sort | None, Field(description='Sorting parameters')] = None
+    pagination: pagination_request.PaginationRequest | None = None
     include_assignments: Annotated[
         bool | None, Field(description='Include package assignment information in response')
     ] = True
-    include_items: Annotated[
-        bool | None,
-        Field(description='Include items for multi-asset formats like carousels and native ads'),
-    ] = False
     include_snapshot: Annotated[
         bool | None,
         Field(
             description='Include a lightweight delivery snapshot per creative (lifetime impressions and last-served date). For detailed performance analytics, use get_creative_delivery.'
         ),
     ] = False
+    include_items: Annotated[
+        bool | None,
+        Field(description='Include items for multi-asset formats like carousels and native ads'),
+    ] = False
     include_variables: Annotated[
         bool | None,
         Field(
             description='Include dynamic content variable definitions (DCO slots) for each creative'
         ),
     ] = False
-    pagination: pagination_request.PaginationRequest | None = None
-    sort: Annotated[Sort | None, Field(description='Sorting parameters')] = None
+    include_pricing: Annotated[
+        bool | None,
+        Field(
+            description='Include pricing_options on each creative. Requires account to be provided. When false or omitted, pricing is not computed.'
+        ),
+    ] = False
+    account: Annotated[
+        account_ref.AccountReference | None,
+        Field(
+            description="Account reference for pricing and access. When provided with include_pricing, the agent returns pricing_options from this account's rate card on each creative."
+        ),
+    ] = None
+    fields: Annotated[
+        list[Field1] | None,
+        Field(
+            description="Specific fields to include in response (omit for all fields). The 'concept' value returns both concept_id and concept_name.",
+            min_length=1,
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/list_creatives_response.py b/src/adcp/types/generated_poc/creative/list_creatives_response.py
index e32aa116f..d4570d5a6 100644
--- a/src/adcp/types/generated_poc/creative/list_creatives_response.py
+++ b/src/adcp/types/generated_poc/creative/list_creatives_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/list_creatives_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,14 +8,14 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import AwareDatetime, ConfigDict, Field
+from pydantic import AwareDatetime, ConfigDict, Field, StringConstraints
 
 from ..core import account as account_1
 from ..core import context as context_1
 from ..core import creative_item, creative_variable, error
 from ..core import ext as ext_1
 from ..core import format_id as format_id_1
-from ..core import pagination_response
+from ..core import pagination_response, vendor_pricing_option
 from ..core.assets import (
     audio_asset,
     brief_asset,
@@ -39,21 +39,21 @@ class AssignedPackage(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    assigned_date: Annotated[AwareDatetime, Field(description='When this assignment was created')]
     package_id: Annotated[str, Field(description='Package identifier')]
+    assigned_date: Annotated[AwareDatetime, Field(description='When this assignment was created')]
 
 
 class Assignments(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    assignment_count: Annotated[
+        int, Field(description='Total number of active package assignments', ge=0)
+    ]
     assigned_packages: Annotated[
         list[AssignedPackage] | None,
         Field(description='List of packages this creative is assigned to'),
     ] = None
-    assignment_count: Annotated[
-        int, Field(description='Total number of active package assignments', ge=0)
-    ]
 
 
 class Snapshot(AdCPBaseModel):
@@ -63,6 +63,13 @@ class Snapshot(AdCPBaseModel):
     as_of: Annotated[
         AwareDatetime, Field(description='When this snapshot was captured by the platform')
     ]
+    staleness_seconds: Annotated[
+        int,
+        Field(
+            description='Maximum age of this data in seconds. For example, 3600 means the data may be up to 1 hour old.',
+            ge=0,
+        ),
+    ]
     impressions: Annotated[
         int,
         Field(
@@ -76,13 +83,6 @@ class Snapshot(AdCPBaseModel):
             description='Last time this creative served an impression. Absent when the creative has never served.'
         ),
     ] = None
-    staleness_seconds: Annotated[
-        int,
-        Field(
-            description='Maximum age of this data in seconds. For example, 3600 means the data may be up to 1 hour old.',
-            ge=0,
-        ),
-    ]
 
 
 class SnapshotUnavailableReason(Enum):
@@ -95,51 +95,62 @@ class StatusSummary(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    processing: Annotated[
+        int | None, Field(description='Number of creatives being processed', ge=0)
+    ] = None
     approved: Annotated[int | None, Field(description='Number of approved creatives', ge=0)] = None
-    archived: Annotated[int | None, Field(description='Number of archived creatives', ge=0)] = None
     pending_review: Annotated[
         int | None, Field(description='Number of creatives pending review', ge=0)
     ] = None
-    processing: Annotated[
-        int | None, Field(description='Number of creatives being processed', ge=0)
-    ] = None
     rejected: Annotated[int | None, Field(description='Number of rejected creatives', ge=0)] = None
+    archived: Annotated[int | None, Field(description='Number of archived creatives', ge=0)] = None
 
 
 class SortApplied(AdCPBaseModel):
-    direction: sort_direction.SortDirection | None = None
     field: str | None = None
+    direction: sort_direction.SortDirection | None = None
 
 
 class QuerySummary(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    filters_applied: Annotated[
-        list[str] | None, Field(description='List of filters that were applied to the query')
-    ] = None
+    total_matching: Annotated[
+        int,
+        Field(description='Total number of creatives matching filters (across all pages)', ge=0),
+    ]
     returned: Annotated[
         int, Field(description='Number of creatives returned in this response', ge=0)
     ]
+    filters_applied: Annotated[
+        list[str] | None, Field(description='List of filters that were applied to the query')
+    ] = None
     sort_applied: Annotated[
         SortApplied | None, Field(description='Sort order that was applied')
     ] = None
-    total_matching: Annotated[
-        int,
-        Field(description='Total number of creatives matching filters (across all pages)', ge=0),
-    ]
 
 
 class Creative(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
     account: Annotated[
         account_1.Account | None, Field(description='Account that owns this creative')
     ] = None
+    name: Annotated[str, Field(description='Human-readable creative name')]
+    format_id: Annotated[
+        format_id_1.FormatId,
+        Field(description='Format identifier specifying which format this creative conforms to'),
+    ]
+    status: Annotated[
+        creative_status.CreativeStatus, Field(description='Current approval status of the creative')
+    ]
+    created_date: Annotated[AwareDatetime, Field(description='When the creative was created')]
+    updated_date: Annotated[AwareDatetime, Field(description='When the creative was last modified')]
     assets: Annotated[
         dict[
-            str,
+            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
             image_asset.ImageAsset
             | video_asset.VideoAsset
             | audio_asset.AudioAsset
@@ -158,9 +169,8 @@ class Creative(AdCPBaseModel):
         | None,
         Field(description='Assets for this creative, keyed by asset_id'),
     ] = None
-    assignments: Annotated[
-        Assignments | None,
-        Field(description='Current package assignments (included when include_assignments=true)'),
+    tags: Annotated[
+        list[str] | None, Field(description='User-defined tags for organization and searchability')
     ] = None
     concept_id: Annotated[
         str | None,
@@ -169,19 +179,16 @@ class Creative(AdCPBaseModel):
         ),
     ] = None
     concept_name: Annotated[str | None, Field(description='Human-readable concept name')] = None
-    created_date: Annotated[AwareDatetime, Field(description='When the creative was created')]
-    creative_id: Annotated[str, Field(description='Unique identifier for the creative')]
-    format_id: Annotated[
-        format_id_1.FormatId,
-        Field(description='Format identifier specifying which format this creative conforms to'),
-    ]
-    items: Annotated[
-        list[creative_item.CreativeItem] | None,
+    variables: Annotated[
+        list[creative_variable.CreativeVariable] | None,
         Field(
-            description='Items for multi-asset formats like carousels and native ads (included when include_items=true)'
+            description='Dynamic content variables (DCO slots) for this creative. Included when include_variables=true.'
         ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable creative name')]
+    assignments: Annotated[
+        Assignments | None,
+        Field(description='Current package assignments (included when include_assignments=true)'),
+    ] = None
     snapshot: Annotated[
         Snapshot | None,
         Field(
@@ -194,17 +201,17 @@ class Creative(AdCPBaseModel):
             description='Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot data is unavailable for this creative.'
         ),
     ] = None
-    status: Annotated[
-        creative_status.CreativeStatus, Field(description='Current approval status of the creative')
-    ]
-    tags: Annotated[
-        list[str] | None, Field(description='User-defined tags for organization and searchability')
+    items: Annotated[
+        list[creative_item.CreativeItem] | None,
+        Field(
+            description='Items for multi-asset formats like carousels and native ads (included when include_items=true)'
+        ),
     ] = None
-    updated_date: Annotated[AwareDatetime, Field(description='When the creative was last modified')]
-    variables: Annotated[
-        list[creative_variable.CreativeVariable] | None,
+    pricing_options: Annotated[
+        list[vendor_pricing_option.VendorPricingOption] | None,
         Field(
-            description='Dynamic content variables (DCO slots) for this creative. Included when include_variables=true.'
+            description='Pricing options for using this creative (serving, delivery). Used by ad servers and library agents. Transformation agents expose format-level pricing on list_creative_formats instead. Present when include_pricing=true and account provided. The buyer passes the applied pricing_option_id in report_usage.',
+            min_length=1,
         ),
     ] = None
 
@@ -213,29 +220,29 @@ class ListCreativesResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    query_summary: Annotated[
+        QuerySummary, Field(description='Summary of the query that was executed')
+    ]
+    pagination: pagination_response.PaginationResponse
     creatives: Annotated[
         list[Creative], Field(description='Array of creative assets matching the query')
     ]
-    errors: Annotated[
-        list[error.Error] | None,
-        Field(description='Task-specific errors (e.g., invalid filters, account not found)'),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     format_summary: Annotated[
-        dict[str, int] | None,
+        dict[Annotated[str, StringConstraints(pattern=r'^[a-zA-Z0-9_-]+$')], int] | None,
         Field(
             description="Breakdown of creatives by format. Keys are agent-defined format identifiers, optionally including dimensions (e.g., 'display_static_300x250', 'video_30s_vast'). Key construction is platform-specific — there is no required format."
         ),
     ] = None
-    pagination: pagination_response.PaginationResponse
-    query_summary: Annotated[
-        QuerySummary, Field(description='Summary of the query that was executed')
-    ]
+    status_summary: Annotated[
+        StatusSummary | None, Field(description='Breakdown of creatives by status')
+    ] = None
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(description='Task-specific errors (e.g., invalid filters, account not found)'),
+    ] = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
-    status_summary: Annotated[
-        StatusSummary | None, Field(description='Breakdown of creatives by status')
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/preview_creative_request.py b/src/adcp/types/generated_poc/creative/preview_creative_request.py
index 4965865f3..e98d10332 100644
--- a/src/adcp/types/generated_poc/creative/preview_creative_request.py
+++ b/src/adcp/types/generated_poc/creative/preview_creative_request.py
@@ -1,10 +1,11 @@
 # generated by datamodel-codegen:
 #   filename:  creative/preview_creative_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
-from typing import Annotated, Literal
+from enum import Enum
+from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
@@ -16,191 +17,163 @@
 from ..enums import creative_quality, preview_output_format
 
 
+class RequestType(Enum):
+    single = 'single'
+    batch = 'batch'
+    variant = 'variant'
+
+
 class Input(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context_description: Annotated[
-        str | None,
+    name: Annotated[
+        str,
         Field(
-            description="Natural language description of the context for AI-generated content (e.g., 'User just searched for running shoes', 'Podcast discussing weather patterns', 'Article about electric vehicles')"
+            description="Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad', 'Desktop dark mode')"
         ),
-    ] = None
+    ]
     macros: Annotated[
         dict[str, str] | None,
         Field(
-            description="Macro values to use for this preview. Supports all universal macros from the format's supported_macros list. See docs/creative/universal-macros.md for available macros."
+            description="Macro values to use for this preview. Supports all universal macros from the format's supported_macros list."
         ),
     ] = None
-    name: Annotated[
-        str,
+    context_description: Annotated[
+        str | None,
         Field(
-            description="Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad', 'Desktop dark mode')"
+            description="Natural language description of the context for AI-generated content (e.g., 'User just searched for running shoes', 'Podcast discussing weather patterns')"
         ),
-    ]
+    ] = None
 
 
-class Input4(AdCPBaseModel):
+class Input8(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    name: Annotated[str, Field(description='Human-readable name for this input set')]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to use for this preview')
+    ] = None
     context_description: Annotated[
         str | None,
         Field(description='Natural language description of the context for AI-generated content'),
     ] = None
-    macros: Annotated[
-        dict[str, str] | None, Field(description='Macro values to use for this preview')
-    ] = None
-    name: Annotated[str, Field(description='Human-readable name for this input set')]
 
 
-class PreviewCreativeRequest3(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    context: context_1.ContextObject | None = None
-    creative_id: Annotated[str | None, Field(description='Creative identifier for context')] = None
-    ext: ext_1.ExtensionObject | None = None
-    output_format: Annotated[
-        preview_output_format.PreviewOutputFormat | None,
-        Field(
-            description="Output format for the preview. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding)."
-        ),
-    ] = preview_output_format.PreviewOutputFormat.url
-    request_type: Annotated[
-        Literal['variant'],
-        Field(description='Discriminator indicating this is a variant preview request'),
-    ]
-    variant_id: Annotated[
-        str,
-        Field(
-            description='Platform-assigned variant identifier from get_creative_delivery response'
-        ),
-    ]
-
-
-class PreviewCreativeRequest1(AdCPBaseModel):
+class Request(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    creative_manifest: Annotated[
-        creative_manifest_1.CreativeManifest,
-        Field(description='Complete creative manifest with all required assets for the format.'),
-    ]
-    ext: ext_1.ExtensionObject | None = None
     format_id: Annotated[
         format_id_1.FormatId | None,
         Field(
-            description='Format identifier for rendering the preview. Optional — defaults to creative_manifest_1.format_id if omitted.'
+            description='Format identifier for rendering the preview. Defaults to creative_manifest_1.format_id if omitted.'
         ),
     ] = None
+    creative_manifest: Annotated[
+        creative_manifest_1.CreativeManifest,
+        Field(description='Complete creative manifest with all required assets.'),
+    ]
     inputs: Annotated[
-        list[Input] | None,
+        list[Input8] | None,
         Field(
-            description='Array of input sets for generating multiple preview variants. Each input set defines macros and context values for one preview rendering. If not provided, creative agent will generate default previews.',
-            min_length=1,
+            description='Array of input sets for generating multiple preview variants', min_length=1
         ),
     ] = None
-    item_limit: Annotated[
-        int | None,
-        Field(
-            description="Maximum number of catalog items to render in the preview. For catalog-driven generative formats, caps how many items are rendered per preview variant. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets. Creative agents SHOULD default to a reasonable sample when omitted and the catalog is large.",
-            ge=1,
-        ),
+    template_id: Annotated[
+        str | None, Field(description='Specific template ID for custom format rendering')
     ] = None
-    output_format: Annotated[
-        preview_output_format.PreviewOutputFormat | None,
-        Field(
-            description="Output format for previews. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding). Default: 'url' for backward compatibility."
-        ),
-    ] = preview_output_format.PreviewOutputFormat.url
     quality: Annotated[
         creative_quality.CreativeQuality | None,
-        Field(
-            description="Render quality for the preview. 'draft' produces fast, lower-fidelity renderings for rapid iteration. 'production' produces full-quality renderings for final review. If omitted, the creative agent uses its own default."
-        ),
+        Field(description='Render quality for this preview. Overrides batch-level default.'),
     ] = None
-    request_type: Annotated[
-        Literal['single'],
-        Field(description='Discriminator indicating this is a single preview request'),
-    ]
-    template_id: Annotated[
-        str | None, Field(description='Specific template ID for custom format rendering')
+    output_format: Annotated[
+        preview_output_format.PreviewOutputFormat | None,
+        Field(description='Output format for this preview. Overrides batch-level default.'),
+    ] = preview_output_format.PreviewOutputFormat.url
+    item_limit: Annotated[
+        int | None,
+        Field(description='Maximum number of catalog items to render in this preview.', ge=1),
     ] = None
 
 
-class Request(AdCPBaseModel):
+class PreviewCreativeRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    creative_manifest: Annotated[
-        creative_manifest_1.CreativeManifest,
-        Field(description='Complete creative manifest with all required assets.'),
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    request_type: Annotated[
+        RequestType,
+        Field(
+            description="Preview mode. 'single' previews one creative manifest. 'batch' previews multiple creatives in one call. 'variant' replays a post-flight variant by ID."
+        ),
     ]
+    creative_manifest: Annotated[
+        creative_manifest_1.CreativeManifest | None,
+        Field(
+            description="Complete creative manifest with all required assets for the format. Required when request_type is 'single'. Also accepted per item in batch mode."
+        ),
+    ] = None
     format_id: Annotated[
         format_id_1.FormatId | None,
         Field(
-            description='Format identifier for rendering the preview. Optional — defaults to creative_manifest_1.format_id if omitted.'
+            description='Format identifier for rendering the preview. Defaults to creative_manifest_1.format_id if omitted. Used in single mode.'
         ),
     ] = None
     inputs: Annotated[
-        list[Input4] | None,
+        list[Input] | None,
         Field(
-            description='Array of input sets for generating multiple preview variants', min_length=1
+            description='Array of input sets for generating multiple preview variants. Each input set defines macros and context values for one preview rendering. Used in single mode.',
+            min_length=1,
         ),
     ] = None
-    item_limit: Annotated[
-        int | None,
-        Field(description='Maximum number of catalog items to render in this preview.', ge=1),
+    template_id: Annotated[
+        str | None,
+        Field(description='Specific template ID for custom format rendering. Used in single mode.'),
     ] = None
-    output_format: Annotated[
-        preview_output_format.PreviewOutputFormat | None,
-        Field(
-            description="Output format for this preview. 'url' returns preview_url, 'html' returns preview_html."
-        ),
-    ] = preview_output_format.PreviewOutputFormat.url
     quality: Annotated[
         creative_quality.CreativeQuality | None,
         Field(
-            description="Render quality for this preview. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Overrides any batch-level default."
+            description="Render quality. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. In batch mode, sets the default for all requests (individual items can override)."
         ),
     ] = None
-    template_id: Annotated[
-        str | None, Field(description='Specific template ID for custom format rendering')
-    ] = None
-
-
-class PreviewCreativeRequest2(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     output_format: Annotated[
         preview_output_format.PreviewOutputFormat | None,
         Field(
-            description="Default output format for all requests in this batch. Individual requests can override this. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding)."
+            description="Output format. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). In batch mode, sets the default for all requests (individual items can override). Default: 'url'."
         ),
     ] = preview_output_format.PreviewOutputFormat.url
-    quality: Annotated[
-        creative_quality.CreativeQuality | None,
+    item_limit: Annotated[
+        int | None,
         Field(
-            description="Default render quality for all requests in this batch. Individual requests can override this. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings."
+            description='Maximum number of catalog items to render per preview variant. Used in single mode. Creative agents SHOULD default to a reasonable sample when omitted and the catalog is large.',
+            ge=1,
         ),
     ] = None
-    request_type: Annotated[
-        Literal['batch'],
-        Field(description='Discriminator indicating this is a batch preview request'),
-    ]
     requests: Annotated[
-        list[Request],
+        list[Request] | None,
         Field(
-            description='Array of preview requests (1-50 items). Each follows the single request structure.',
+            description="Array of preview requests (1-50 items). Required when request_type is 'batch'. Each item follows the single request structure.",
             max_length=50,
             min_length=1,
         ),
-    ]
-
-
-PreviewCreativeRequest = PreviewCreativeRequest1 | PreviewCreativeRequest2 | PreviewCreativeRequest3
+    ] = None
+    variant_id: Annotated[
+        str | None,
+        Field(
+            description="Platform-assigned variant identifier from get_creative_delivery response. Required when request_type is 'variant'."
+        ),
+    ] = None
+    creative_id: Annotated[
+        str | None, Field(description='Creative identifier for context. Used in variant mode.')
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/preview_creative_response.py b/src/adcp/types/generated_poc/creative/preview_creative_response.py
index db0168c13..4454178a9 100644
--- a/src/adcp/types/generated_poc/creative/preview_creative_response.py
+++ b/src/adcp/types/generated_poc/creative/preview_creative_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/preview_creative_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,28 +16,22 @@
 
 
 class Input(AdCPBaseModel):
-    context_description: Annotated[
-        str | None, Field(description='Context description applied to this variant')
-    ] = None
+    name: Annotated[str, Field(description='Human-readable name for this variant')]
     macros: Annotated[
         dict[str, str] | None, Field(description='Macro values applied to this variant')
     ] = None
-    name: Annotated[str, Field(description='Human-readable name for this variant')]
+    context_description: Annotated[
+        str | None, Field(description='Context description applied to this variant')
+    ] = None
 
 
-class Input6(AdCPBaseModel):
-    context_description: str | None = None
-    macros: dict[str, str] | None = None
+class Input12(AdCPBaseModel):
     name: str
+    macros: dict[str, str] | None = None
+    context_description: str | None = None
 
 
 class Preview(AdCPBaseModel):
-    input: Annotated[
-        Input,
-        Field(
-            description='The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.'
-        ),
-    ]
     preview_id: Annotated[str, Field(description='Unique identifier for this preview variant')]
     renders: Annotated[
         list[preview_render.PreviewRender],
@@ -46,23 +40,22 @@ class Preview(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    input: Annotated[
+        Input,
+        Field(
+            description='The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.'
+        ),
+    ]
 
 
 class PreviewCreativeResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    expires_at: Annotated[
-        AwareDatetime, Field(description='ISO 8601 timestamp when preview links expire')
+    response_type: Annotated[
+        Literal['single'],
+        Field(description='Discriminator indicating this is a single preview response'),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    interactive_url: Annotated[
-        AnyUrl | None,
-        Field(
-            description='Optional URL to an interactive testing page that shows all preview variants with controls to switch between them, modify macro values, and test different scenarios.'
-        ),
-    ] = None
     previews: Annotated[
         list[Preview],
         Field(
@@ -70,75 +63,81 @@ class PreviewCreativeResponse1(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    response_type: Annotated[
-        Literal['single'],
-        Field(description='Discriminator indicating this is a single preview response'),
+    interactive_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Optional URL to an interactive testing page that shows all preview variants with controls to switch between them, modify macro values, and test different scenarios.'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when preview links expire')
     ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
-class Preview5(AdCPBaseModel):
-    input: Input6
+class Preview9(AdCPBaseModel):
     preview_id: str
     renders: Annotated[list[preview_render.PreviewRender], Field(min_length=1)]
+    input: Input12
 
 
 class Response(AdCPBaseModel):
-    expires_at: Annotated[AwareDatetime, Field(description='When the preview URLs expire')]
-    interactive_url: AnyUrl | None = None
     previews: Annotated[
-        list[Preview5],
+        list[Preview9],
         Field(description='Array of preview variants for this creative', min_length=1),
     ]
+    interactive_url: AnyUrl | None = None
+    expires_at: Annotated[AwareDatetime, Field(description='When the preview URLs expire')]
 
 
 class Results(AdCPBaseModel):
+    success: Annotated[Literal[True], Field(description='Indicates this preview request succeeded')]
     creative_id: Annotated[
         str,
         Field(
             description='ID of the creative this result corresponds to. Enables correlation when processing batch results.'
         ),
     ]
+    response: Annotated[Response, Field(description='Preview data for successful requests')]
     errors: Annotated[
         list[error.Error] | None, Field(description='Errors for failed requests', min_length=1)
     ] = None
-    response: Annotated[Response, Field(description='Preview data for successful requests')]
-    success: Annotated[Literal[True], Field(description='Indicates this preview request succeeded')]
 
 
-Preview6 = Preview5
+class Preview10(Preview9):
+    pass
 
 
 class Response1(AdCPBaseModel):
-    expires_at: Annotated[AwareDatetime, Field(description='When the preview URLs expire')]
-    interactive_url: AnyUrl | None = None
     previews: Annotated[
-        list[Preview6],
+        list[Preview10],
         Field(description='Array of preview variants for this creative', min_length=1),
     ]
+    interactive_url: AnyUrl | None = None
+    expires_at: Annotated[AwareDatetime, Field(description='When the preview URLs expire')]
 
 
 class Results1(AdCPBaseModel):
+    success: Annotated[Literal[False], Field(description='Indicates this preview request failed')]
     creative_id: Annotated[
         str,
         Field(
             description='ID of the creative this result corresponds to. Enables correlation when processing batch results.'
         ),
     ]
-    errors: Annotated[
-        list[error.Error], Field(description='Errors for failed requests', min_length=1)
-    ]
     response: Annotated[
         Response1 | None, Field(description='Preview data for successful requests')
     ] = None
-    success: Annotated[Literal[False], Field(description='Indicates this preview request failed')]
+    errors: Annotated[
+        list[error.Error], Field(description='Errors for failed requests', min_length=1)
+    ]
 
 
 class PreviewCreativeResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     response_type: Annotated[
         Literal['batch'],
         Field(description='Discriminator indicating this is a batch preview response'),
@@ -150,9 +149,11 @@ class PreviewCreativeResponse2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
-class Preview7(AdCPBaseModel):
+class Preview11(AdCPBaseModel):
     preview_id: Annotated[str, Field(description='Unique identifier for this preview')]
     renders: Annotated[
         list[preview_render.PreviewRender],
@@ -164,32 +165,32 @@ class PreviewCreativeResponse3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    response_type: Annotated[
+        Literal['variant'],
+        Field(description='Discriminator indicating this is a variant preview response'),
+    ]
+    variant_id: Annotated[str, Field(description='Platform-assigned variant identifier')]
     creative_id: Annotated[
         str | None, Field(description='Creative identifier this variant belongs to')
     ] = None
-    expires_at: Annotated[
-        AwareDatetime | None, Field(description='ISO 8601 timestamp when preview links expire')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    manifest: Annotated[
-        creative_manifest.CreativeManifest | None,
-        Field(
-            description='The rendered creative manifest for this variant — the actual output that was served, not the input assets'
-        ),
-    ] = None
     previews: Annotated[
-        list[Preview7],
+        list[Preview11],
         Field(
             description='Array of rendered pieces for this variant. Most formats render as a single piece.',
             min_length=1,
         ),
     ]
-    response_type: Annotated[
-        Literal['variant'],
-        Field(description='Discriminator indicating this is a variant preview response'),
-    ]
-    variant_id: Annotated[str, Field(description='Platform-assigned variant identifier')]
+    manifest: Annotated[
+        creative_manifest.CreativeManifest | None,
+        Field(
+            description='The rendered creative manifest for this variant — the actual output that was served, not the input assets'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 timestamp when preview links expire')
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 PreviewCreativeResponse = PreviewCreativeResponse1 | PreviewCreativeResponse2 | PreviewCreativeResponse3
diff --git a/src/adcp/types/generated_poc/creative/preview_render.py b/src/adcp/types/generated_poc/creative/preview_render.py
index b931990fe..9d77febf3 100644
--- a/src/adcp/types/generated_poc/creative/preview_render.py
+++ b/src/adcp/types/generated_poc/creative/preview_render.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/preview_render.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,14 +11,11 @@
 
 
 class Dimensions(AdCPBaseModel):
-    height: Annotated[float, Field(ge=0.0)]
     width: Annotated[float, Field(ge=0.0)]
+    height: Annotated[float, Field(ge=0.0)]
 
 
 class Embedding(AdCPBaseModel):
-    csp_policy: Annotated[
-        str | None, Field(description='Content Security Policy requirements for embedding')
-    ] = None
     recommended_sandbox: Annotated[
         str | None,
         Field(
@@ -31,19 +28,18 @@ class Embedding(AdCPBaseModel):
     supports_fullscreen: Annotated[
         bool | None, Field(description='Whether this output supports fullscreen mode')
     ] = None
+    csp_policy: Annotated[
+        str | None, Field(description='Content Security Policy requirements for embedding')
+    ] = None
 
 
 class PreviewRender1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    dimensions: Annotated[
-        Dimensions | None, Field(description='Dimensions for this rendered piece')
-    ] = None
-    embedding: Annotated[
-        Embedding | None,
-        Field(description='Optional security and embedding metadata for safe iframe integration'),
-    ] = None
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
     output_format: Annotated[
         Literal['url'], Field(description='Discriminator indicating preview_url is provided')
     ]
@@ -53,27 +49,28 @@ class PreviewRender1(AdCPBaseModel):
             description='URL to an HTML page that renders this piece. Can be embedded in an iframe.'
         ),
     ]
-    render_id: Annotated[
-        str, Field(description='Unique identifier for this rendered piece within the variant')
-    ]
     role: Annotated[
         str,
         Field(
             description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
         ),
     ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None,
+        Field(description='Optional security and embedding metadata for safe iframe integration'),
+    ] = None
 
 
 class PreviewRender2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    dimensions: Annotated[
-        Dimensions | None, Field(description='Dimensions for this rendered piece')
-    ] = None
-    embedding: Annotated[
-        Embedding | None, Field(description='Optional security and embedding metadata')
-    ] = None
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
     output_format: Annotated[
         Literal['html'], Field(description='Discriminator indicating preview_html is provided')
     ]
@@ -83,48 +80,44 @@ class PreviewRender2(AdCPBaseModel):
             description='Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.'
         ),
     ]
-    render_id: Annotated[
-        str, Field(description='Unique identifier for this rendered piece within the variant')
-    ]
     role: Annotated[
         str,
         Field(
             description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
         ),
     ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None, Field(description='Optional security and embedding metadata')
+    ] = None
 
 
 class PreviewRender3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    dimensions: Annotated[
-        Dimensions | None, Field(description='Dimensions for this rendered piece')
-    ] = None
-    embedding: Annotated[
-        Embedding | None,
-        Field(description='Optional security and embedding metadata for safe iframe integration'),
-    ] = None
+    render_id: Annotated[
+        str, Field(description='Unique identifier for this rendered piece within the variant')
+    ]
     output_format: Annotated[
         Literal['both'],
         Field(
             description='Discriminator indicating both preview_url and preview_html are provided'
         ),
     ]
-    preview_html: Annotated[
-        str,
-        Field(
-            description='Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.'
-        ),
-    ]
     preview_url: Annotated[
         AnyUrl,
         Field(
             description='URL to an HTML page that renders this piece. Can be embedded in an iframe.'
         ),
     ]
-    render_id: Annotated[
-        str, Field(description='Unique identifier for this rendered piece within the variant')
+    preview_html: Annotated[
+        str,
+        Field(
+            description='Raw HTML for this rendered piece. Can be embedded directly in the page without iframe. Security warning: Only use with trusted creative agents as this bypasses iframe sandboxing.'
+        ),
     ]
     role: Annotated[
         str,
@@ -132,6 +125,13 @@ class PreviewRender3(AdCPBaseModel):
             description="Semantic role of this rendered piece. Use 'primary' for main content, 'companion' for associated banners, descriptive strings for device variants or custom roles."
         ),
     ]
+    dimensions: Annotated[
+        Dimensions | None, Field(description='Dimensions for this rendered piece')
+    ] = None
+    embedding: Annotated[
+        Embedding | None,
+        Field(description='Optional security and embedding metadata for safe iframe integration'),
+    ] = None
 
 
 class PreviewRender(RootModel[PreviewRender1 | PreviewRender2 | PreviewRender3]):
diff --git a/src/adcp/types/generated_poc/creative/sync_creatives_request.py b/src/adcp/types/generated_poc/creative/sync_creatives_request.py
index e5aac9cb3..e33bfaff8 100644
--- a/src/adcp/types/generated_poc/creative/sync_creatives_request.py
+++ b/src/adcp/types/generated_poc/creative/sync_creatives_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/sync_creatives_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -23,13 +23,6 @@ class Assignment(AdCPBaseModel):
     )
     creative_id: Annotated[str, Field(description='ID of the creative to assign')]
     package_id: Annotated[str, Field(description='ID of the package to assign the creative to')]
-    placement_ids: Annotated[
-        list[str] | None,
-        Field(
-            description='Restrict this creative to specific placements within the package. When omitted, the creative is eligible for all placements.',
-            min_length=1,
-        ),
-    ] = None
     weight: Annotated[
         float | None,
         Field(
@@ -38,23 +31,38 @@ class Assignment(AdCPBaseModel):
             le=100.0,
         ),
     ] = None
+    placement_ids: Annotated[
+        list[str] | None,
+        Field(
+            description='Restrict this creative to specific placements within the package. When omitted, the creative is eligible for all placements.',
+            min_length=1,
+        ),
+    ] = None
 
 
 class SyncCreativesRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     account: Annotated[
         account_ref.AccountReference, Field(description='Account that owns these creatives.')
     ]
-    assignments: Annotated[
-        list[Assignment] | None,
+    creatives: Annotated[
+        list[creative_asset.CreativeAsset],
         Field(
-            description='Optional bulk assignment of creatives to packages. Each entry maps one creative to one package with optional weight and placement targeting. Standalone creative agents that do not manage media buys ignore this field.',
+            description='Array of creative assets to sync (create or update)',
+            max_length=100,
             min_length=1,
         ),
-    ] = None
-    context: context_1.ContextObject | None = None
+    ]
     creative_ids: Annotated[
         list[str] | None,
         Field(
@@ -63,13 +71,21 @@ class SyncCreativesRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    creatives: Annotated[
-        list[creative_asset.CreativeAsset],
+    assignments: Annotated[
+        list[Assignment] | None,
         Field(
-            description='Array of creative assets to sync (create or update)',
-            max_length=100,
+            description='Optional bulk assignment of creatives to packages. Each entry maps one creative to one package with optional weight and placement targeting. Standalone creative agents that do not manage media buys ignore this field.',
             min_length=1,
         ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated idempotency key for safe retries. If a sync fails without a response, resending with the same idempotency_key guarantees at-most-once execution. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
     ]
     delete_missing: Annotated[
         bool | None,
@@ -83,24 +99,17 @@ class SyncCreativesRequest(AdCPBaseModel):
             description='When true, preview changes without applying them. Returns what would be created/updated/deleted.'
         ),
     ] = False
-    ext: ext_1.ExtensionObject | None = None
-    idempotency_key: Annotated[
-        str | None,
+    validation_mode: Annotated[
+        validation_mode_1.ValidationMode | None,
         Field(
-            description='Client-generated idempotency key for safe retries. If a sync fails without a response, resending with the same idempotency_key guarantees at-most-once execution. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
+            description="Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid creatives and reports errors."
         ),
-    ] = None
+    ] = validation_mode_1.ValidationMode.strict
     push_notification_config: Annotated[
         push_notification_config_1.PushNotificationConfig | None,
         Field(
             description='Optional webhook configuration for async sync notifications. The agent will send a webhook when sync completes if the operation takes longer than immediate response time (typically for large bulk operations or manual approval/HITL).'
         ),
     ] = None
-    validation_mode: Annotated[
-        validation_mode_1.ValidationMode | None,
-        Field(
-            description="Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid creatives and reports errors."
-        ),
-    ] = validation_mode_1.ValidationMode.strict
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/sync_creatives_response.py b/src/adcp/types/generated_poc/creative/sync_creatives_response.py
index 632abd1d4..5ebc13943 100644
--- a/src/adcp/types/generated_poc/creative/sync_creatives_response.py
+++ b/src/adcp/types/generated_poc/creative/sync_creatives_response.py
@@ -1,13 +1,13 @@
 # generated by datamodel-codegen:
 #   filename:  creative/sync_creatives_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, StringConstraints
 
 from ..core import account as account_1
 from ..core import context as context_1
@@ -20,7 +20,6 @@ class SyncCreativesResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(
@@ -28,6 +27,7 @@ class SyncCreativesResponse2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -35,50 +35,50 @@ class Creative(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    creative_id: Annotated[str, Field(description='Creative ID from the request')]
     account: Annotated[
         account_1.Account | None, Field(description='Account that owns this creative')
     ] = None
     action: Annotated[
         creative_action.CreativeAction, Field(description='Action taken for this creative')
     ]
-    assigned_to: Annotated[
-        list[str] | None,
-        Field(
-            description='Package IDs this creative was successfully assigned to (only present when assignments were requested)'
-        ),
-    ] = None
-    assignment_errors: Annotated[
-        dict[str, str] | None,
-        Field(
-            description='Assignment errors by package ID (only present when assignment failures occurred)'
-        ),
+    platform_id: Annotated[
+        str | None, Field(description='Platform-specific ID assigned to the creative')
     ] = None
     changes: Annotated[
         list[str] | None,
         Field(description="Field names that were modified (only present when action='updated')"),
     ] = None
-    creative_id: Annotated[str, Field(description='Creative ID from the request')]
     errors: Annotated[
-        list[str] | None,
+        list[error.Error] | None,
         Field(description="Validation or processing errors (only present when action='failed')"),
     ] = None
+    warnings: Annotated[
+        list[str] | None, Field(description='Non-fatal warnings about this creative')
+    ] = None
+    preview_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Preview URL for generative creatives (only present for generative formats)'
+        ),
+    ] = None
     expires_at: Annotated[
         AwareDatetime | None,
         Field(
             description='ISO 8601 timestamp when preview link expires (only present when preview_url exists)'
         ),
     ] = None
-    platform_id: Annotated[
-        str | None, Field(description='Platform-specific ID assigned to the creative')
-    ] = None
-    preview_url: Annotated[
-        AnyUrl | None,
+    assigned_to: Annotated[
+        list[str] | None,
         Field(
-            description='Preview URL for generative creatives (only present for generative formats)'
+            description='Package IDs this creative was successfully assigned to (only present when assignments were requested)'
         ),
     ] = None
-    warnings: Annotated[
-        list[str] | None, Field(description='Non-fatal warnings about this creative')
+    assignment_errors: Annotated[
+        dict[Annotated[str, StringConstraints(pattern=r'^[a-zA-Z0-9_-]+$')], str] | None,
+        Field(
+            description='Assignment errors by package ID (only present when assignment failures occurred)'
+        ),
     ] = None
 
 
@@ -86,21 +86,21 @@ class SyncCreativesResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    dry_run: Annotated[
+        bool | None, Field(description='Whether this was a dry run (no actual changes made)')
+    ] = None
     creatives: Annotated[
         list[Creative],
         Field(
             description="Results for each creative processed. Items with action='failed' indicate per-item validation/processing failures, not operation-level failures."
         ),
     ]
-    dry_run: Annotated[
-        bool | None, Field(description='Whether this was a dry run (no actual changes made)')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 SyncCreativesResponse = SyncCreativesResponse1 | SyncCreativesResponse2
diff --git a/src/adcp/types/generated_poc/enums/adcp_domain.py b/src/adcp/types/generated_poc/enums/adcp_protocol.py
similarity index 58%
rename from src/adcp/types/generated_poc/enums/adcp_domain.py
rename to src/adcp/types/generated_poc/enums/adcp_protocol.py
index 23ded02e0..730ec49d6 100644
--- a/src/adcp/types/generated_poc/enums/adcp_domain.py
+++ b/src/adcp/types/generated_poc/enums/adcp_protocol.py
@@ -1,15 +1,16 @@
 # generated by datamodel-codegen:
-#   filename:  enums/adcp_domain.json
-#   timestamp: 2026-03-16T00:33:16+00:00
+#   filename:  enums/adcp_protocol.json
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from enum import Enum
 
 
-class AdcpDomain(Enum):
+class AdcpProtocol(Enum):
     media_buy = 'media-buy'
     signals = 'signals'
     governance = 'governance'
     creative = 'creative'
     brand = 'brand'
+    sponsored_intelligence = 'sponsored-intelligence'
diff --git a/src/adcp/types/generated_poc/enums/brand_agent_type.py b/src/adcp/types/generated_poc/enums/brand_agent_type.py
new file mode 100644
index 000000000..6748831af
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/brand_agent_type.py
@@ -0,0 +1,18 @@
+# generated by datamodel-codegen:
+#   filename:  enums/brand_agent_type.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class BrandAgentType(Enum):
+    brand = 'brand'
+    rights = 'rights'
+    measurement = 'measurement'
+    governance = 'governance'
+    creative = 'creative'
+    sales = 'sales'
+    buying = 'buying'
+    signals = 'signals'
diff --git a/src/adcp/types/generated_poc/enums/cloud_storage_protocol.py b/src/adcp/types/generated_poc/enums/cloud_storage_protocol.py
new file mode 100644
index 000000000..6e5ee9651
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/cloud_storage_protocol.py
@@ -0,0 +1,13 @@
+# generated by datamodel-codegen:
+#   filename:  enums/cloud_storage_protocol.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class CloudStorageProtocol(Enum):
+    s3 = 's3'
+    gcs = 'gcs'
+    azure_blob = 'azure_blob'
diff --git a/src/adcp/types/generated_poc/enums/creative_identifier_type.py b/src/adcp/types/generated_poc/enums/creative_identifier_type.py
new file mode 100644
index 000000000..1effd6f9e
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/creative_identifier_type.py
@@ -0,0 +1,13 @@
+# generated by datamodel-codegen:
+#   filename:  enums/creative_identifier_type.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class CreativeIdentifierType(Enum):
+    ad_id = 'ad_id'
+    isci = 'isci'
+    clearcast_clock = 'clearcast_clock'
diff --git a/src/adcp/types/generated_poc/enums/daast_tracking_event.py b/src/adcp/types/generated_poc/enums/daast_tracking_event.py
index bed0c2f4d..a8b857441 100644
--- a/src/adcp/types/generated_poc/enums/daast_tracking_event.py
+++ b/src/adcp/types/generated_poc/enums/daast_tracking_event.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/daast_tracking_event.json
-#   timestamp: 2026-02-23T01:56:40+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,14 +8,26 @@
 
 
 class DaastTrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
     start = 'start'
     firstQuartile = 'firstQuartile'
     midpoint = 'midpoint'
     thirdQuartile = 'thirdQuartile'
     complete = 'complete'
-    impression = 'impression'
+    mute = 'mute'
+    unmute = 'unmute'
     pause = 'pause'
     resume = 'resume'
     skip = 'skip'
-    mute = 'mute'
-    unmute = 'unmute'
+    progress = 'progress'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
diff --git a/src/adcp/types/generated_poc/enums/error_code.py b/src/adcp/types/generated_poc/enums/error_code.py
index 455041f3d..ca0c1f90a 100644
--- a/src/adcp/types/generated_poc/enums/error_code.py
+++ b/src/adcp/types/generated_poc/enums/error_code.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/error_code.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -26,9 +26,12 @@ class ErrorCode(Enum):
     ACCOUNT_PAYMENT_REQUIRED = 'ACCOUNT_PAYMENT_REQUIRED'
     ACCOUNT_SUSPENDED = 'ACCOUNT_SUSPENDED'
     COMPLIANCE_UNSATISFIED = 'COMPLIANCE_UNSATISFIED'
+    GOVERNANCE_DENIED = 'GOVERNANCE_DENIED'
     BUDGET_EXHAUSTED = 'BUDGET_EXHAUSTED'
     BUDGET_EXCEEDED = 'BUDGET_EXCEEDED'
     CONFLICT = 'CONFLICT'
+    IDEMPOTENCY_CONFLICT = 'IDEMPOTENCY_CONFLICT'
+    IDEMPOTENCY_EXPIRED = 'IDEMPOTENCY_EXPIRED'
     CREATIVE_DEADLINE_EXCEEDED = 'CREATIVE_DEADLINE_EXCEEDED'
     INVALID_STATE = 'INVALID_STATE'
     MEDIA_BUY_NOT_FOUND = 'MEDIA_BUY_NOT_FOUND'
@@ -40,3 +43,5 @@ class ErrorCode(Enum):
     PRODUCT_EXPIRED = 'PRODUCT_EXPIRED'
     PROPOSAL_NOT_COMMITTED = 'PROPOSAL_NOT_COMMITTED'
     IO_REQUIRED = 'IO_REQUIRED'
+    TERMS_REJECTED = 'TERMS_REJECTED'
+    VERSION_UNSUPPORTED = 'VERSION_UNSUPPORTED'
diff --git a/src/adcp/types/generated_poc/enums/forecast_range_unit.py b/src/adcp/types/generated_poc/enums/forecast_range_unit.py
index 80a8062fb..a63b70c00 100644
--- a/src/adcp/types/generated_poc/enums/forecast_range_unit.py
+++ b/src/adcp/types/generated_poc/enums/forecast_range_unit.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/forecast_range_unit.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,3 +15,4 @@ class ForecastRangeUnit(Enum):
     daily = 'daily'
     clicks = 'clicks'
     conversions = 'conversions'
+    package = 'package'
diff --git a/src/adcp/types/generated_poc/enums/forecastable_metric.py b/src/adcp/types/generated_poc/enums/forecastable_metric.py
index 5676638dc..74b040bc4 100644
--- a/src/adcp/types/generated_poc/enums/forecastable_metric.py
+++ b/src/adcp/types/generated_poc/enums/forecastable_metric.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/forecastable_metric.json
-#   timestamp: 2026-02-27T02:10:10+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -21,3 +21,6 @@ class ForecastableMetric(Enum):
     follows = 'follows'
     saves = 'saves'
     profile_visits = 'profile_visits'
+    measured_impressions = 'measured_impressions'
+    downloads = 'downloads'
+    plays = 'plays'
diff --git a/src/adcp/types/generated_poc/enums/identifier_types.py b/src/adcp/types/generated_poc/enums/identifier_types.py
index 6c85f9c09..f35e53461 100644
--- a/src/adcp/types/generated_poc/enums/identifier_types.py
+++ b/src/adcp/types/generated_poc/enums/identifier_types.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/identifier_types.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -27,3 +27,5 @@ class PropertyIdentifierTypes(Enum):
     apple_podcast_id = 'apple_podcast_id'
     spotify_collection_id = 'spotify_collection_id'
     podcast_guid = 'podcast_guid'
+    station_id = 'station_id'
+    facility_id = 'facility_id'
diff --git a/src/adcp/types/generated_poc/enums/media_buy_status.py b/src/adcp/types/generated_poc/enums/media_buy_status.py
index 1ebfd03ab..8987e7539 100644
--- a/src/adcp/types/generated_poc/enums/media_buy_status.py
+++ b/src/adcp/types/generated_poc/enums/media_buy_status.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/media_buy_status.json
-#   timestamp: 2026-02-28T17:39:50+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,8 @@
 
 
 class MediaBuyStatus(Enum):
-    pending_activation = 'pending_activation'
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
     active = 'active'
     paused = 'paused'
     completed = 'completed'
diff --git a/src/adcp/types/generated_poc/enums/property_type.py b/src/adcp/types/generated_poc/enums/property_type.py
index f118cb5ac..2e6c05a37 100644
--- a/src/adcp/types/generated_poc/enums/property_type.py
+++ b/src/adcp/types/generated_poc/enums/property_type.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/property_type.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,5 +15,6 @@ class PropertyType(Enum):
     dooh = 'dooh'
     podcast = 'podcast'
     radio = 'radio'
+    linear_tv = 'linear_tv'
     streaming_audio = 'streaming_audio'
     ai_assistant = 'ai_assistant'
diff --git a/src/adcp/types/generated_poc/enums/purchase_type.py b/src/adcp/types/generated_poc/enums/purchase_type.py
new file mode 100644
index 000000000..34bb42be8
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/purchase_type.py
@@ -0,0 +1,14 @@
+# generated by datamodel-codegen:
+#   filename:  enums/purchase_type.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class PurchaseType(Enum):
+    media_buy = 'media_buy'
+    rights_license = 'rights_license'
+    signal_activation = 'signal_activation'
+    creative_services = 'creative_services'
diff --git a/src/adcp/types/generated_poc/enums/specialism.py b/src/adcp/types/generated_poc/enums/specialism.py
new file mode 100644
index 000000000..cd5dc81b6
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/specialism.py
@@ -0,0 +1,32 @@
+# generated by datamodel-codegen:
+#   filename:  enums/specialism.json
+#   timestamp: 2026-04-18T21:01:10+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class AdcpSpecialism(Enum):
+    audience_sync = 'audience-sync'
+    brand_rights = 'brand-rights'
+    content_standards = 'content-standards'
+    creative_ad_server = 'creative-ad-server'
+    creative_generative = 'creative-generative'
+    creative_template = 'creative-template'
+    governance_delivery_monitor = 'governance-delivery-monitor'
+    governance_spend_authority = 'governance-spend-authority'
+    measurement_verification = 'measurement-verification'
+    property_lists = 'property-lists'
+    sales_broadcast_tv = 'sales-broadcast-tv'
+    sales_catalog_driven = 'sales-catalog-driven'
+    sales_exchange = 'sales-exchange'
+    sales_guaranteed = 'sales-guaranteed'
+    sales_non_guaranteed = 'sales-non-guaranteed'
+    sales_proposal_mode = 'sales-proposal-mode'
+    sales_retail_media = 'sales-retail-media'
+    sales_social = 'sales-social'
+    sales_streaming_tv = 'sales-streaming-tv'
+    signal_marketplace = 'signal-marketplace'
+    signal_owned = 'signal-owned'
+    signed_requests = 'signed-requests'
diff --git a/src/adcp/types/generated_poc/enums/uid_type.py b/src/adcp/types/generated_poc/enums/uid_type.py
index f32fbf18c..89834b72e 100644
--- a/src/adcp/types/generated_poc/enums/uid_type.py
+++ b/src/adcp/types/generated_poc/enums/uid_type.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/uid_type.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 
 class UidType(Enum):
     rampid = 'rampid'
+    rampid_derived = 'rampid_derived'
     id5 = 'id5'
     uid2 = 'uid2'
     euid = 'euid'
diff --git a/src/adcp/types/generated_poc/enums/universal_macro.py b/src/adcp/types/generated_poc/enums/universal_macro.py
index 56cf1ad09..428d60b7d 100644
--- a/src/adcp/types/generated_poc/enums/universal_macro.py
+++ b/src/adcp/types/generated_poc/enums/universal_macro.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/universal_macro.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -61,6 +61,7 @@ class UniversalMacro(Enum):
     COLLECTION_NAME = 'COLLECTION_NAME'
     INSTALLMENT_ID = 'INSTALLMENT_ID'
     AUDIO_DURATION = 'AUDIO_DURATION'
+    TMPX = 'TMPX'
     AXEM = 'AXEM'
     CATALOG_ID = 'CATALOG_ID'
     SKU = 'SKU'
diff --git a/src/adcp/types/generated_poc/enums/vast_tracking_event.py b/src/adcp/types/generated_poc/enums/vast_tracking_event.py
index bfad06ae6..64b4b7377 100644
--- a/src/adcp/types/generated_poc/enums/vast_tracking_event.py
+++ b/src/adcp/types/generated_poc/enums/vast_tracking_event.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/vast_tracking_event.json
-#   timestamp: 2026-02-23T01:56:40+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,19 +8,35 @@
 
 
 class VastTrackingEvent(Enum):
+    impression = 'impression'
+    creativeView = 'creativeView'
+    loaded = 'loaded'
     start = 'start'
     firstQuartile = 'firstQuartile'
     midpoint = 'midpoint'
     thirdQuartile = 'thirdQuartile'
     complete = 'complete'
-    impression = 'impression'
-    click = 'click'
+    mute = 'mute'
+    unmute = 'unmute'
     pause = 'pause'
     resume = 'resume'
+    rewind = 'rewind'
     skip = 'skip'
-    mute = 'mute'
-    unmute = 'unmute'
-    fullscreen = 'fullscreen'
-    exitFullscreen = 'exitFullscreen'
     playerExpand = 'playerExpand'
     playerCollapse = 'playerCollapse'
+    fullscreen = 'fullscreen'
+    exitFullscreen = 'exitFullscreen'
+    progress = 'progress'
+    notUsed = 'notUsed'
+    otherAdInteraction = 'otherAdInteraction'
+    interactiveStart = 'interactiveStart'
+    clickTracking = 'clickTracking'
+    customClick = 'customClick'
+    close = 'close'
+    closeLinear = 'closeLinear'
+    error = 'error'
+    viewable = 'viewable'
+    notViewable = 'notViewable'
+    viewUndetermined = 'viewUndetermined'
+    measurableImpression = 'measurableImpression'
+    viewableImpression = 'viewableImpression'
diff --git a/src/adcp/types/generated_poc/error_details/__init__.py b/src/adcp/types/generated_poc/error_details/__init__.py
new file mode 100644
index 000000000..bcbe04734
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-18T19:31:26+00:00
diff --git a/src/adcp/types/generated_poc/error_details/account_setup_required.py b/src/adcp/types/generated_poc/error_details/account_setup_required.py
new file mode 100644
index 000000000..ca359656a
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/account_setup_required.py
@@ -0,0 +1,22 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/account_setup_required.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class AccountSetupRequiredDetails(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    setup_url: Annotated[
+        AnyUrl | None, Field(description='URL where account setup can be completed')
+    ] = None
+    setup_steps: Annotated[
+        list[str] | None, Field(description='Steps remaining before the account is ready')
+    ] = None
diff --git a/src/adcp/types/generated_poc/error_details/audience_too_small.py b/src/adcp/types/generated_poc/error_details/audience_too_small.py
new file mode 100644
index 000000000..b79b95fc5
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/audience_too_small.py
@@ -0,0 +1,20 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/audience_too_small.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class AudienceTooSmallDetails(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    minimum_size: Annotated[float | None, Field(description='Minimum audience size required')] = (
+        None
+    )
+    current_size: Annotated[float | None, Field(description='Current audience size')] = None
diff --git a/src/adcp/types/generated_poc/error_details/budget_too_low.py b/src/adcp/types/generated_poc/error_details/budget_too_low.py
new file mode 100644
index 000000000..3d12e7369
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/budget_too_low.py
@@ -0,0 +1,20 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/budget_too_low.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class BudgetTooLowDetails(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    minimum_budget: Annotated[
+        float | None, Field(description="Seller's minimum budget for this product")
+    ] = None
+    currency: Annotated[str | None, Field(description='ISO 4217 currency code')] = None
diff --git a/src/adcp/types/generated_poc/error_details/conflict.py b/src/adcp/types/generated_poc/error_details/conflict.py
new file mode 100644
index 000000000..840a00891
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/conflict.py
@@ -0,0 +1,25 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/conflict.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class ConflictDetails(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    resource_id: Annotated[
+        str | None, Field(description='Identifier of the conflicting resource')
+    ] = None
+    expected_version: Annotated[
+        float | str | None, Field(description='Version or ETag the client was operating against')
+    ] = None
+    current_version: Annotated[
+        float | str | None, Field(description='Current version or ETag on the server')
+    ] = None
diff --git a/src/adcp/types/generated_poc/error_details/creative_rejected.py b/src/adcp/types/generated_poc/error_details/creative_rejected.py
new file mode 100644
index 000000000..2d9ba021b
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/creative_rejected.py
@@ -0,0 +1,23 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/creative_rejected.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class CreativeRejectedDetails(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    policy_id: Annotated[str | None, Field(description='Identifier for the violated policy')] = None
+    policy_url: Annotated[
+        AnyUrl | None, Field(description='URL where the full policy can be reviewed')
+    ] = None
+    reasons: Annotated[
+        list[str] | None, Field(description='Specific reasons the creative was rejected')
+    ] = None
diff --git a/src/adcp/types/generated_poc/error_details/policy_violation.py b/src/adcp/types/generated_poc/error_details/policy_violation.py
new file mode 100644
index 000000000..14e5e1071
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/policy_violation.py
@@ -0,0 +1,23 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/policy_violation.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class PolicyViolationDetails(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    policy_id: Annotated[str | None, Field(description='Identifier for the violated policy')] = None
+    policy_url: Annotated[
+        AnyUrl | None, Field(description='URL where the full policy can be reviewed')
+    ] = None
+    violated_rules: Annotated[
+        list[str] | None, Field(description='Specific rules that were violated')
+    ] = None
diff --git a/src/adcp/types/generated_poc/error_details/rate_limited.py b/src/adcp/types/generated_poc/error_details/rate_limited.py
new file mode 100644
index 000000000..8f6fcc886
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/rate_limited.py
@@ -0,0 +1,33 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/rate_limited.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class Scope(Enum):
+    account = 'account'
+    tool = 'tool'
+    global_ = 'global'
+
+
+class RateLimitedDetails(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    limit: Annotated[float | None, Field(description='Maximum requests allowed in the window')] = (
+        None
+    )
+    remaining: Annotated[
+        float | None, Field(description='Requests remaining in the current window')
+    ] = None
+    window_seconds: Annotated[
+        float | None, Field(description='Duration of the rate-limit window in seconds')
+    ] = None
+    scope: Annotated[Scope | None, Field(description='What the limit applies to')] = None
diff --git a/src/adcp/types/generated_poc/error_details/vendor_error_codes.py b/src/adcp/types/generated_poc/error_details/vendor_error_codes.py
new file mode 100644
index 000000000..56f23fe8a
--- /dev/null
+++ b/src/adcp/types/generated_poc/error_details/vendor_error_codes.py
@@ -0,0 +1,38 @@
+# generated by datamodel-codegen:
+#   filename:  error_details/vendor_error_codes.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, Field
+
+
+class Recovery(Enum):
+    transient = 'transient'
+    correctable = 'correctable'
+    terminal = 'terminal'
+
+
+class Codes(AdCPBaseModel):
+    description: str
+    recovery: Recovery
+
+
+class Vendors(AdCPBaseModel):
+    name: Annotated[str, Field(description='Full vendor name')]
+    url: Annotated[AnyUrl | None, Field(description='Vendor website or documentation URL')] = None
+    codes: Annotated[
+        dict[str, Codes],
+        Field(description='Map of code suffix to description and recovery classification'),
+    ]
+
+
+class VendorErrorCodeRegistry(AdCPBaseModel):
+    vendors: Annotated[
+        dict[str, Vendors] | None,
+        Field(description='Map of vendor prefix to vendor metadata and codes'),
+    ] = None
diff --git a/src/adcp/types/generated_poc/extensions/extension_meta.py b/src/adcp/types/generated_poc/extensions/extension_meta.py
index 47a2185df..d5fc83b8c 100644
--- a/src/adcp/types/generated_poc/extensions/extension_meta.py
+++ b/src/adcp/types/generated_poc/extensions/extension_meta.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  extensions/extension_meta.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,26 +14,8 @@ class AdcpExtensionFileSchema(AdCPBaseModel):
     field_schema: Annotated[
         Literal['http://json-schema.org/draft-07/schema#'], Field(alias='$schema')
     ]
-    additionalProperties: Annotated[
-        Any | None,
-        Field(description='Whether additional properties are allowed in the extension data'),
-    ] = None
-    description: Annotated[str, Field(description='Description of what this extension provides')]
-    docs_url: Annotated[
-        AnyUrl | None, Field(description='URL to documentation for implementors of this extension')
-    ] = None
-    properties: Annotated[
-        dict[str, Any],
-        Field(description='Schema properties defining the structure of ext.{namespace} data'),
-    ]
-    required: Annotated[
-        list[str] | None, Field(description='Required properties within the extension data')
-    ] = None
     title: Annotated[str, Field(description='Human-readable title for the extension')]
-    type: Annotated[
-        Literal['object'],
-        Field(description='Extensions must be objects (data within ext.{namespace})'),
-    ]
+    description: Annotated[str, Field(description='Description of what this extension provides')]
     valid_from: Annotated[
         str,
         Field(
@@ -48,3 +30,21 @@ class AdcpExtensionFileSchema(AdCPBaseModel):
             pattern='^\\d+\\.\\d+$',
         ),
     ] = None
+    docs_url: Annotated[
+        AnyUrl | None, Field(description='URL to documentation for implementors of this extension')
+    ] = None
+    type: Annotated[
+        Literal['object'],
+        Field(description='Extensions must be objects (data within ext.{namespace})'),
+    ]
+    properties: Annotated[
+        dict[str, Any],
+        Field(description='Schema properties defining the structure of ext.{namespace} data'),
+    ]
+    required: Annotated[
+        list[str] | None, Field(description='Required properties within the extension data')
+    ] = None
+    additionalProperties: Annotated[
+        Any | None,
+        Field(description='Whether additional properties are allowed in the extension data'),
+    ] = None
diff --git a/src/adcp/types/generated_poc/governance/attribute_definition.py b/src/adcp/types/generated_poc/governance/attribute_definition.py
new file mode 100644
index 000000000..91b709da4
--- /dev/null
+++ b/src/adcp/types/generated_poc/governance/attribute_definition.py
@@ -0,0 +1,72 @@
+# generated by datamodel-codegen:
+#   filename:  governance/attribute_definition.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+
+class RegulatoryBasi(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    name: Annotated[str, Field(description="Name of the regulation (e.g., 'GDPR Article 9(1)').")]
+    jurisdictions: Annotated[
+        list[str] | None,
+        Field(description='ISO 3166-1 alpha-2 codes where this regulation applies.'),
+    ] = None
+    summary: Annotated[
+        str, Field(description='How this regulation defines or restricts the attribute.')
+    ]
+
+
+class AttributeDefinition(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    attribute_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this attribute. Used in plan.restricted_attributes, signal-definition.restricted_attributes, and data marketplace catalog entries.',
+            pattern='^[a-z][a-z0-9_]*$',
+        ),
+    ]
+    name: Annotated[str, Field(description="Human-readable name (e.g., 'Health Data').")]
+    description: Annotated[
+        str,
+        Field(
+            description='What this attribute category covers. Defines the boundary — what is and is not included.'
+        ),
+    ]
+    regulatory_basis: Annotated[
+        list[RegulatoryBasi] | None,
+        Field(description='Regulations that define or restrict this attribute category.'),
+    ] = None
+    includes: Annotated[
+        list[str] | None,
+        Field(
+            description="Specific data types that fall within this category (e.g., for health_data: 'medical conditions', 'disability status', 'prescription history', 'inferred health from behavioral signals')."
+        ),
+    ] = None
+    excludes: Annotated[
+        list[str] | None,
+        Field(
+            description='Data types that might seem related but are explicitly outside this category. Helps with boundary cases.'
+        ),
+    ] = None
+    signal_patterns: Annotated[
+        list[str] | None,
+        Field(
+            description="Common signal naming or tagging patterns that indicate this attribute (e.g., 'health:', 'condition_', 'diagnosis_'). Data providers and governance agents use these as hints when signals lack explicit restricted_attributes declarations."
+        ),
+    ] = None
+    guidance: Annotated[
+        str | None,
+        Field(
+            description='Implementation notes. Covers edge cases, inferred vs. declared data, and common pitfalls.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/governance/audience_constraints.py b/src/adcp/types/generated_poc/governance/audience_constraints.py
index c35a13207..f3a8ecdf7 100644
--- a/src/adcp/types/generated_poc/governance/audience_constraints.py
+++ b/src/adcp/types/generated_poc/governance/audience_constraints.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/audience_constraints.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,17 +16,17 @@ class AudienceConstraints(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    exclude: Annotated[
+    include: Annotated[
         list[audience_selector.AudienceSelector] | None,
         Field(
-            description="Excluded audience criteria. The seller's targeting must not overlap with these. Exclusions take precedence over inclusions. Used for protected groups, vulnerable communities, regulatory restrictions, or brand safety.",
+            description="Desired audience criteria. The seller's targeting should align with these. Each criterion is evaluated independently — the combined targeting should satisfy at least one inclusion criterion.",
             min_length=1,
         ),
     ] = None
-    include: Annotated[
+    exclude: Annotated[
         list[audience_selector.AudienceSelector] | None,
         Field(
-            description="Desired audience criteria. The seller's targeting should align with these. Each criterion is evaluated independently — the combined targeting should satisfy at least one inclusion criterion.",
+            description="Excluded audience criteria. The seller's targeting must not overlap with these. Exclusions take precedence over inclusions. Used for protected groups, vulnerable communities, regulatory restrictions, or brand safety.",
             min_length=1,
         ),
     ] = None
diff --git a/src/adcp/types/generated_poc/governance/check_governance_request.py b/src/adcp/types/generated_poc/governance/check_governance_request.py
index f34094364..93a8688b0 100644
--- a/src/adcp/types/generated_poc/governance/check_governance_request.py
+++ b/src/adcp/types/generated_poc/governance/check_governance_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/check_governance_request.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -8,11 +8,28 @@
 from typing import Annotated, Any
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, StringConstraints
 
 from ..core import business_entity
+from ..core import context as context_1
+from ..core import ext as ext_1
 from ..core import planned_delivery as planned_delivery_1
 from ..enums import governance_phase
+from ..enums import purchase_type as purchase_type_1
+
+
+class ReportingPeriod(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    start: AwareDatetime
+    end: AwareDatetime
+
+
+class Pacing(Enum):
+    ahead = 'ahead'
+    on_track = 'on_track'
+    behind = 'behind'
 
 
 class Baseline(Enum):
@@ -37,55 +54,38 @@ class AudienceDistribution(AdCPBaseModel):
             description="Description of the baseline when baseline is 'custom' (e.g., 'US adults 18+ with broadband access')."
         ),
     ] = None
-    cumulative_indices: Annotated[
-        dict[str, float] | None,
-        Field(
-            description='Cumulative audience index values since the media buy started. Same key format as indices (dimension:value). Use for detecting sustained bias drift that may not appear in a single reporting period.'
-        ),
-    ] = None
     indices: Annotated[
-        dict[str, float],
+        dict[Annotated[str, StringConstraints(pattern=r'^[a-z_]+:.+$')], float],
         Field(
             description="Audience index values for the current reporting period. Keys are seller-defined dimension:value strings (e.g., 'age:25-34', 'gender:female', 'income:high'). The protocol does not mandate a taxonomy — dimensions and value labels vary by seller. Values are index relative to the declared baseline (1.0 = at parity, >1.0 = over-indexed, <1.0 = under-indexed)."
         ),
     ]
-
-
-class Pacing(Enum):
-    ahead = 'ahead'
-    on_track = 'on_track'
-    behind = 'behind'
-
-
-class ReportingPeriod(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    end: AwareDatetime
-    start: AwareDatetime
+    cumulative_indices: Annotated[
+        dict[Annotated[str, StringConstraints(pattern=r'^[a-z_]+:.+$')], float] | None,
+        Field(
+            description='Cumulative audience index values since the governed action started. Same key format as indices (dimension:value). Use for detecting sustained bias drift that may not appear in a single reporting period.'
+        ),
+    ] = None
 
 
 class DeliveryMetrics(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    audience_distribution: Annotated[
-        AudienceDistribution | None,
-        Field(
-            description='Actual audience composition during the reporting period. Enables mid-flight drift detection when actual delivery skews from planned audience targeting.'
-        ),
+    reporting_period: Annotated[
+        ReportingPeriod, Field(description='Start and end timestamps for the reporting window.')
+    ]
+    spend: Annotated[
+        float | None, Field(description='Total spend during the reporting period.', ge=0.0)
     ] = None
-    channel_distribution: Annotated[
-        dict[str, float] | None,
-        Field(
-            description='Actual channel distribution. Keys are channel enum values, values are percentages.'
-        ),
+    cumulative_spend: Annotated[
+        float | None, Field(description='Total spend since the governed action started.', ge=0.0)
     ] = None
-    cumulative_impressions: Annotated[
-        int | None, Field(description='Total impressions since the media buy started.', ge=0)
+    impressions: Annotated[
+        int | None, Field(description='Impressions delivered during the reporting period.', ge=0)
     ] = None
-    cumulative_spend: Annotated[
-        float | None, Field(description='Total spend since the media buy started.', ge=0.0)
+    cumulative_impressions: Annotated[
+        int | None, Field(description='Total impressions since the governed action started.', ge=0)
     ] = None
     geo_distribution: Annotated[
         dict[str, float] | None,
@@ -93,8 +93,11 @@ class DeliveryMetrics(AdCPBaseModel):
             description='Actual geographic distribution. Keys are ISO 3166-1 alpha-2 codes, values are percentages.'
         ),
     ] = None
-    impressions: Annotated[
-        int | None, Field(description='Impressions delivered during the reporting period.', ge=0)
+    channel_distribution: Annotated[
+        dict[str, float] | None,
+        Field(
+            description='Actual channel distribution. Keys are channel enum values, values are percentages.'
+        ),
     ] = None
     pacing: Annotated[
         Pacing | None,
@@ -102,11 +105,11 @@ class DeliveryMetrics(AdCPBaseModel):
             description='Whether delivery is ahead of, on track with, or behind the planned pace.'
         ),
     ] = None
-    reporting_period: Annotated[
-        ReportingPeriod, Field(description='Start and end timestamps for the reporting window.')
-    ]
-    spend: Annotated[
-        float | None, Field(description='Total spend during the reporting period.', ge=0.0)
+    audience_distribution: Annotated[
+        AudienceDistribution | None,
+        Field(
+            description='Actual audience composition during the reporting period. Enables mid-flight drift detection when actual delivery skews from planned audience targeting.'
+        ),
     ] = None
 
 
@@ -114,39 +117,26 @@ class CheckGovernanceRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    caller: Annotated[AnyUrl, Field(description='URL of the agent making the request.')]
-    delivery_metrics: Annotated[
-        DeliveryMetrics | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description="Actual delivery performance data. MUST be present for 'delivery' phase. The governance agent compares these metrics against the planned delivery to detect drift."
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    governance_context: Annotated[
-        str | None,
-        Field(
-            description='Opaque governance context from a prior check_governance response. Pass this on subsequent checks for the same media buy so the governance agent can maintain continuity across the lifecycle. Issued by the governance agent, never interpreted by callers.',
-            max_length=4096,
-            min_length=1,
-            pattern='^[\\x20-\\x7E]+$',
-        ),
-    ] = None
-    invoice_recipient: Annotated[
-        business_entity.BusinessEntity | None,
-        Field(
-            description='Per-buy invoice recipient from create_media_buy or update_media_buy. MUST be present when the tool payload includes invoice_recipient, so the governance agent can validate billing changes.'
-        ),
-    ] = None
-    media_buy_id: Annotated[
-        str | None,
+    plan_id: Annotated[str, Field(description='Campaign governance plan identifier.')]
+    caller: Annotated[AnyUrl, Field(description='URL of the agent making the request.')]
+    purchase_type: Annotated[
+        purchase_type_1.PurchaseType | None,
         Field(
-            description="The seller's identifier for the media buy. Present on execution checks (seller). The governance agent uses the presence of media_buy_id+planned_delivery to identify an execution check."
+            description="The type of financial commitment being checked. Determines which budget allocation (if any) to validate against. Defaults to 'media_buy' when omitted."
         ),
-    ] = None
-    modification_summary: Annotated[
+    ] = purchase_type_1.PurchaseType.media_buy
+    tool: Annotated[
         str | None,
         Field(
-            description="Human-readable summary of what changed. SHOULD be present for 'modification' phase.",
-            max_length=1000,
+            description="The AdCP tool being checked (e.g., 'create_media_buy', 'acquire_rights', 'activate_signal'). Present on intent checks (orchestrator). The governance agent uses the presence of tool+payload to identify an intent check."
         ),
     ] = None
     payload: Annotated[
@@ -155,20 +145,43 @@ class CheckGovernanceRequest(AdCPBaseModel):
             description='The full tool arguments as they would be sent to the seller. Present on intent checks. The governance agent can inspect any field to validate against the plan.'
         ),
     ] = None
+    governance_context: Annotated[
+        str | None,
+        Field(
+            description='Governance context token from a prior check_governance response. Pass this on subsequent checks for the same governed action so the governance agent can maintain continuity across the lifecycle. In 3.0 governance agents MUST emit a compact JWS per the AdCP JWS profile (see Security — Signed Governance Context); callers persist and forward the value verbatim.',
+            max_length=4096,
+            min_length=1,
+            pattern='^[\\x20-\\x7E]+$',
+        ),
+    ] = None
     phase: Annotated[
         governance_phase.GovernancePhase | None,
         Field(
-            description="The phase of the media buy lifecycle. 'purchase': initial create_media_buy. 'modification': update_media_buy. 'delivery': periodic delivery reporting. Defaults to 'purchase' if omitted."
+            description="The phase of the governed action's lifecycle. 'purchase': initial commitment (create_media_buy, acquire_rights, activate_signal). 'modification': update to existing commitment. 'delivery': periodic delivery or usage reporting. Defaults to 'purchase' if omitted."
         ),
     ] = governance_phase.GovernancePhase.purchase
-    plan_id: Annotated[str, Field(description='Campaign governance plan identifier.')]
     planned_delivery: Annotated[
         planned_delivery_1.PlannedDelivery | None,
         Field(description='What the seller will actually deliver. Present on execution checks.'),
     ] = None
-    tool: Annotated[
+    delivery_metrics: Annotated[
+        DeliveryMetrics | None,
+        Field(
+            description="Actual delivery performance data. MUST be present for 'delivery' phase. The governance agent compares these metrics against the planned delivery to detect drift."
+        ),
+    ] = None
+    modification_summary: Annotated[
         str | None,
         Field(
-            description="The AdCP tool being checked (e.g., 'create_media_buy', 'get_products'). Present on intent checks (orchestrator). The governance agent uses the presence of tool+payload to identify an intent check."
+            description="Human-readable summary of what changed. SHOULD be present for 'modification' phase.",
+            max_length=1000,
+        ),
+    ] = None
+    invoice_recipient: Annotated[
+        business_entity.BusinessEntity | None,
+        Field(
+            description='Invoice recipient from the purchase request. MUST be present when the tool payload includes invoice_recipient, so the governance agent can validate billing changes.'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/check_governance_response.py b/src/adcp/types/generated_poc/governance/check_governance_response.py
index bcbc5cb09..331a4c9ac 100644
--- a/src/adcp/types/generated_poc/governance/check_governance_response.py
+++ b/src/adcp/types/generated_poc/governance/check_governance_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/check_governance_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,9 +10,17 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AwareDatetime, ConfigDict, Field
 
+from ..core import context as context_1
+from ..core import ext as ext_1
 from ..enums import escalation_severity
 
 
+class Status(Enum):
+    approved = 'approved'
+    denied = 'denied'
+    conditions = 'conditions'
+
+
 class Condition(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
@@ -23,19 +31,13 @@ class Condition(AdCPBaseModel):
             description='Dot-path to the field that needs adjustment (in payload for proposed, in planned_delivery for committed).'
         ),
     ]
-    reason: Annotated[str, Field(description='Why this condition is required.')]
     required_value: Annotated[
         Any | None,
         Field(
             description='The value the field must have for approval. When present, the condition is machine-actionable. When absent, the condition is advisory.'
         ),
     ] = None
-
-
-class Status(Enum):
-    approved = 'approved'
-    denied = 'denied'
-    conditions = 'conditions'
+    reason: Annotated[str, Field(description='Why this condition is required.')]
 
 
 class Finding(AdCPBaseModel):
@@ -48,25 +50,31 @@ class Finding(AdCPBaseModel):
             description="Validation category that flagged the issue (e.g., 'budget_compliance', 'regulatory_compliance', 'brand_safety')."
         ),
     ]
-    confidence: Annotated[
-        float | None,
+    policy_id: Annotated[
+        str | None,
         Field(
-            description="Confidence score (0-1) in this finding. Distinguishes 'this definitely violates the policy' (0.95) from 'this might violate depending on how audience segments resolve' (0.6). When absent, the finding is presented without a confidence qualifier.",
-            ge=0.0,
-            le=1.0,
+            description='ID of the policy that triggered this finding. May reference a registry policy (with source: registry) or a bespoke inline policy (with source: inline). Bespoke policy_ids are unique within their authoring container; use source_plan_id when findings aggregate across multiple plans (e.g., portfolio evaluations).'
         ),
     ] = None
+    source_plan_id: Annotated[
+        str | None,
+        Field(
+            description="For portfolio or aggregated evaluations where findings draw on bespoke policies from multiple member plans: identifies the plan whose policy triggered this finding. Omit when the finding's policy_id is unambiguous within the response context (e.g., single-plan check_governance)."
+        ),
+    ] = None
+    severity: escalation_severity.EscalationSeverity
+    explanation: Annotated[str, Field(description='Human-readable description of the issue.')]
     details: Annotated[
         dict[str, Any] | None, Field(description='Structured details for programmatic consumption.')
     ] = None
-    explanation: Annotated[str, Field(description='Human-readable description of the issue.')]
-    policy_id: Annotated[
-        str | None,
+    confidence: Annotated[
+        float | None,
         Field(
-            description='Registry policy ID that triggered this finding. Present when the finding originates from a specific registry policy. Enables programmatic routing of compliance failures.'
+            description="Confidence score (0-1) in this finding. Distinguishes 'this definitely violates the policy' (0.95) from 'this might violate depending on how audience segments resolve' (0.6). When absent, the finding is presented without a confidence qualifier.",
+            ge=0.0,
+            le=1.0,
         ),
     ] = None
-    severity: escalation_severity.EscalationSeverity
     uncertainty_reason: Annotated[
         str | None,
         Field(
@@ -79,27 +87,19 @@ class CheckGovernanceResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    categories_evaluated: Annotated[
-        list[str] | None, Field(description='Governance categories evaluated during this check.')
-    ] = None
     check_id: Annotated[
         str,
         Field(
             description='Unique identifier for this governance check record. Use in report_plan_outcome to link outcomes to the check that authorized them.'
         ),
     ]
-    conditions: Annotated[
-        list[Condition] | None,
-        Field(
-            description="Present when status is 'conditions'. Specific adjustments the caller must make. After applying conditions, the caller MUST re-call check_governance with the adjusted parameters before proceeding."
-        ),
-    ] = None
-    expires_at: Annotated[
-        AwareDatetime | None,
+    status: Annotated[
+        Status,
         Field(
-            description="When this approval expires. Present when status is 'approved' or 'conditions'. The caller must act before this time or re-call check_governance. A lapsed approval is no approval."
+            description="Governance decision. 'approved': proceed as planned. 'denied': do not proceed. 'conditions': approved if the caller accepts the listed conditions, then re-calls check_governance with the adjusted parameters."
         ),
-    ] = None
+    ]
+    plan_id: Annotated[str, Field(description='Echoed from request.')]
     explanation: Annotated[
         str, Field(description='Human-readable explanation of the governance decision.')
     ]
@@ -109,13 +109,16 @@ class CheckGovernanceResponse(AdCPBaseModel):
             description="Specific issues found during the governance check. Present when status is 'denied' or 'conditions'. MAY also be present on 'approved' for informational findings (e.g., budget approaching limit)."
         ),
     ] = None
-    governance_context: Annotated[
-        str | None,
+    conditions: Annotated[
+        list[Condition] | None,
         Field(
-            description="Opaque governance context for this media buy. The buyer MUST attach this to the protocol envelope when sending the media buy to the seller. The seller MUST persist it and include it on all subsequent check_governance calls for this media buy's lifecycle. Only the issuing governance agent interprets this value.",
-            max_length=4096,
-            min_length=1,
-            pattern='^[\\x20-\\x7E]+$',
+            description="Present when status is 'conditions'. Specific adjustments the caller must make. After applying conditions, the caller MUST re-call check_governance with the adjusted parameters before proceeding."
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="When this approval expires. Present when status is 'approved' or 'conditions'. The caller must act before this time or re-call check_governance. A lapsed approval is no approval."
         ),
     ] = None
     next_check: Annotated[
@@ -124,13 +127,20 @@ class CheckGovernanceResponse(AdCPBaseModel):
             description='When the seller should next call check_governance with delivery metrics. Present when the governance agent expects ongoing delivery reporting.'
         ),
     ] = None
-    plan_id: Annotated[str, Field(description='Echoed from request.')]
+    categories_evaluated: Annotated[
+        list[str] | None, Field(description='Governance categories evaluated during this check.')
+    ] = None
     policies_evaluated: Annotated[
         list[str] | None, Field(description='Registry policy IDs evaluated during this check.')
     ] = None
-    status: Annotated[
-        Status,
+    governance_context: Annotated[
+        str | None,
         Field(
-            description="Governance decision. 'approved': proceed as planned. 'denied': do not proceed. 'conditions': approved if the caller accepts the listed conditions, then re-calls check_governance with the adjusted parameters."
+            description="Governance context token for this governed action. The buyer MUST attach this to the protocol envelope when sending the purchase request (media buy, rights acquisition, signal activation) to the seller. The seller MUST persist it and include it on all subsequent check_governance calls for this action's lifecycle.\n\nValue format: in 3.0 governance agents MUST emit a compact JWS per the AdCP JWS profile (see Security — Signed Governance Context). Sellers MAY verify; sellers that do not verify MUST persist and forward the token unchanged so auditors can verify downstream. In 3.1 all sellers MUST verify per the checklist. Non-JWS values from pre-3.0 governance agents are deprecated and will be rejected in 3.1.\n\nSellers that implement verification MUST verify signature, `aud`, `exp`, `jti` replay, and revocation per the profile before treating the request as governance-approved. This is the primary correlation key for audit and reporting across the governance lifecycle — the governance agent decodes its own signed token to look up internal plan state (buyer correlation IDs, policy decision log, etc.).",
+            max_length=4096,
+            min_length=1,
+            pattern='^[\\x20-\\x7E]+$',
         ),
-    ]
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/get_plan_audit_logs_request.py b/src/adcp/types/generated_poc/governance/get_plan_audit_logs_request.py
index acbc009b3..cf04d37b9 100644
--- a/src/adcp/types/generated_poc/governance/get_plan_audit_logs_request.py
+++ b/src/adcp/types/generated_poc/governance/get_plan_audit_logs_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/get_plan_audit_logs_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,14 +9,23 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
+from ..core import ext as ext_1
+from ..enums import purchase_type
+
 
 class GetPlanAuditLogsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    include_entries: Annotated[
-        bool | None, Field(description='Include the full audit trail. Default: false.')
-    ] = False
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     plan_ids: Annotated[
         list[str] | None,
         Field(
@@ -31,3 +40,22 @@ class GetPlanAuditLogsRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    governance_contexts: Annotated[
+        list[str] | None,
+        Field(
+            description='Filter audit entries by governance context. Returns only checks and outcomes that share these governance contexts, enabling lifecycle tracing across purchase types.',
+            min_length=1,
+        ),
+    ] = None
+    purchase_types: Annotated[
+        list[purchase_type.PurchaseType] | None,
+        Field(
+            description="Filter audit entries by purchase type. Returns only checks and outcomes matching these purchase types (e.g., ['rights_license'] to see all rights activity).",
+            min_length=1,
+        ),
+    ] = None
+    include_entries: Annotated[
+        bool | None, Field(description='Include the full audit trail. Default: false.')
+    ] = False
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/get_plan_audit_logs_response.py b/src/adcp/types/generated_poc/governance/get_plan_audit_logs_response.py
index 0cf9097ca..8358863ee 100644
--- a/src/adcp/types/generated_poc/governance/get_plan_audit_logs_response.py
+++ b/src/adcp/types/generated_poc/governance/get_plan_audit_logs_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/get_plan_audit_logs_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,7 +10,16 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
+from ..core import context as context_1
+from ..core import ext as ext_1
 from ..enums import escalation_severity, outcome_type
+from ..enums import purchase_type as purchase_type_1
+
+
+class Status(Enum):
+    active = 'active'
+    suspended = 'suspended'
+    completed = 'completed'
 
 
 class Budget(AdCPBaseModel):
@@ -41,49 +50,34 @@ class ChannelAllocation(AdCPBaseModel):
     ] = None
 
 
-class CheckType(Enum):
-    intent = 'intent'
-    execution = 'execution'
-
-
-class Finding(AdCPBaseModel):
+class Statuses(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    category_id: str
-    confidence: Annotated[float | None, Field(ge=0.0, le=1.0)] = None
-    explanation: str
-    policy_id: str | None = None
-    severity: escalation_severity.EscalationSeverity
-
-
-class Status(Enum):
-    approved = 'approved'
-    denied = 'denied'
-    conditions = 'conditions'
-
-
-class Type(Enum):
-    check = 'check'
-    outcome = 'outcome'
-
-
-class Status6(Enum):
-    active = 'active'
-    suspended = 'suspended'
-    completed = 'completed'
+    approved: int | None = None
+    denied: int | None = None
+    conditions: int | None = None
+    human_reviewed: Annotated[
+        int | None,
+        Field(
+            description='Supplementary count of checks that went through internal human review. These checks are also counted in approved or denied.'
+        ),
+    ] = None
 
 
-class MediaBuy(AdCPBaseModel):
+class Escalation(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    check_count: Annotated[
-        int | None, Field(description='Number of governance checks performed for this media buy.')
+    check_id: Annotated[str, Field(description='The escalated governance check.')]
+    reason: Annotated[str, Field(description='Why it was escalated.')]
+    resolution: Annotated[
+        str | None,
+        Field(description="How it was resolved (e.g., 'approved_by_human', 'rejected_by_human')."),
+    ] = None
+    resolved_at: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 resolution timestamp.')
     ] = None
-    committed: Annotated[float, Field(description='Budget committed for this media buy.')]
-    media_buy_id: Annotated[str, Field(description='Seller-assigned media buy identifier.')]
-    status: Annotated[Status6, Field(description='Media buy status.')]
 
 
 class EscalationRateTrend(Enum):
@@ -96,9 +90,6 @@ class Thresholds(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    auto_approval_rate_max: Annotated[
-        float | None, Field(description='Maximum acceptable auto-approval rate.', ge=0.0, le=1.0)
-    ] = None
     escalation_rate_max: Annotated[
         float | None,
         Field(
@@ -115,6 +106,9 @@ class Thresholds(AdCPBaseModel):
             le=1.0,
         ),
     ] = None
+    auto_approval_rate_max: Annotated[
+        float | None, Field(description='Maximum acceptable auto-approval rate.', ge=0.0, le=1.0)
+    ] = None
     human_override_rate_max: Annotated[
         float | None,
         Field(
@@ -129,12 +123,6 @@ class DriftMetrics(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    auto_approval_rate: Annotated[
-        float | None,
-        Field(
-            description='Fraction of checks approved without human intervention.', ge=0.0, le=1.0
-        ),
-    ] = None
     escalation_rate: Annotated[
         float | None,
         Field(description='Fraction of checks that resulted in escalation.', ge=0.0, le=1.0),
@@ -143,6 +131,12 @@ class DriftMetrics(AdCPBaseModel):
         EscalationRateTrend | None,
         Field(description="Direction of escalation rate over the plan's lifetime."),
     ] = None
+    auto_approval_rate: Annotated[
+        float | None,
+        Field(
+            description='Fraction of checks approved without human intervention.', ge=0.0, le=1.0
+        ),
+    ] = None
     human_override_rate: Annotated[
         float | None,
         Field(
@@ -167,36 +161,6 @@ class DriftMetrics(AdCPBaseModel):
     ] = None
 
 
-class Escalation(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    check_id: Annotated[str, Field(description='The escalated governance check.')]
-    reason: Annotated[str, Field(description='Why it was escalated.')]
-    resolution: Annotated[
-        str | None,
-        Field(description="How it was resolved (e.g., 'approved_by_human', 'rejected_by_human')."),
-    ] = None
-    resolved_at: Annotated[
-        AwareDatetime | None, Field(description='ISO 8601 resolution timestamp.')
-    ] = None
-
-
-class Statuses(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    approved: int | None = None
-    conditions: int | None = None
-    denied: int | None = None
-    human_reviewed: Annotated[
-        int | None,
-        Field(
-            description='Supplementary count of checks that went through internal human review. These checks are also counted in approved or denied.'
-        ),
-    ] = None
-
-
 class Summary(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
@@ -204,39 +168,75 @@ class Summary(AdCPBaseModel):
     checks_performed: Annotated[
         int | None, Field(description='Total governance checks performed.')
     ] = None
+    outcomes_reported: Annotated[int | None, Field(description='Total outcomes reported.')] = None
+    statuses: Annotated[
+        Statuses | None, Field(description='Count of each governance check status.')
+    ] = None
+    findings_count: Annotated[
+        int | None, Field(description='Total findings across all checks and outcomes.')
+    ] = None
+    escalations: Annotated[
+        list[Escalation] | None, Field(description='All escalations and their resolutions.')
+    ] = None
     drift_metrics: Annotated[
         DriftMetrics | None,
         Field(
             description='Aggregate governance metrics for detecting oversight drift. A declining escalation rate may indicate well-calibrated governance or eroding human oversight -- surfacing the trend lets the organization make that judgment.'
         ),
     ] = None
-    escalations: Annotated[
-        list[Escalation] | None, Field(description='All escalations and their resolutions.')
-    ] = None
-    findings_count: Annotated[
-        int | None, Field(description='Total findings across all checks and outcomes.')
-    ] = None
-    outcomes_reported: Annotated[int | None, Field(description='Total outcomes reported.')] = None
-    statuses: Annotated[
-        Statuses | None, Field(description='Count of each governance check status.')
-    ] = None
+
+
+class Type(Enum):
+    check = 'check'
+    outcome = 'outcome'
+
+
+class Status13(Enum):
+    approved = 'approved'
+    denied = 'denied'
+    conditions = 'conditions'
+
+
+class CheckType(Enum):
+    intent = 'intent'
+    execution = 'execution'
+
+
+class Finding(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    category_id: str
+    policy_id: str | None = None
+    severity: escalation_severity.EscalationSeverity
+    explanation: str
+    confidence: Annotated[float | None, Field(ge=0.0, le=1.0)] = None
 
 
 class Entry(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    id: Annotated[str, Field(description='Entry identifier.')]
+    type: Annotated[Type, Field(description='Entry type.')]
+    timestamp: Annotated[AwareDatetime, Field(description='ISO 8601 timestamp.')]
+    plan_id: Annotated[
+        str | None,
+        Field(
+            description='Plan this entry belongs to. Present when querying multiple plans or a portfolio.'
+        ),
+    ] = None
     caller: Annotated[
         AnyUrl | None,
         Field(
             description='URL of the agent that made the request. Resolved from the credentials used on the governance callback.'
         ),
     ] = None
-    categories_evaluated: Annotated[
-        list[str] | None,
-        Field(
-            description="Governance categories evaluated (e.g., 'budget_authority', 'regulatory_compliance'). Present for check entries."
-        ),
+    tool: Annotated[str | None, Field(description='The AdCP tool (present for check entries).')] = (
+        None
+    )
+    status: Annotated[
+        Status13 | None, Field(description='Governance check status (present for check entries).')
     ] = None
     check_type: Annotated[
         CheckType | None,
@@ -244,72 +244,95 @@ class Entry(AdCPBaseModel):
             description='Whether the check was an intent check (orchestrator) or execution check (seller). Inferred from the fields present on the original check request. Present for check entries.'
         ),
     ] = None
-    committed_budget: Annotated[
-        float | None, Field(description='Budget committed (present for completed outcome entries).')
-    ] = None
     explanation: Annotated[
         str | None,
         Field(
             description='Human-readable explanation of the governance decision (present for check entries).'
         ),
     ] = None
+    policies_evaluated: Annotated[
+        list[str] | None,
+        Field(
+            description='Registry policy IDs evaluated during this check (present for check entries).'
+        ),
+    ] = None
+    categories_evaluated: Annotated[
+        list[str] | None,
+        Field(
+            description="Governance categories evaluated (e.g., 'budget_authority', 'regulatory_compliance'). Present for check entries."
+        ),
+    ] = None
     findings: Annotated[
         list[Finding] | None,
         Field(
             description='Findings from this check or outcome. Same structure as check_governance response findings.'
         ),
     ] = None
-    id: Annotated[str, Field(description='Entry identifier.')]
-    media_buy_id: Annotated[
-        str | None, Field(description='Media buy ID (present for delivery outcome entries).')
-    ] = None
     outcome: Annotated[
         outcome_type.OutcomeType | None,
         Field(description='Outcome type (present for outcome entries).'),
     ] = None
-    outcome_status: Annotated[
-        str | None, Field(description='Outcome status (present for outcome entries).')
+    committed_budget: Annotated[
+        float | None, Field(description='Budget committed (present for completed outcome entries).')
     ] = None
-    plan_id: Annotated[
+    governance_context: Annotated[
         str | None,
         Field(
-            description='Plan this entry belongs to. Present when querying multiple plans or a portfolio.'
+            description='Governance context for this entry (present for check and outcome entries).'
         ),
     ] = None
-    policies_evaluated: Annotated[
-        list[str] | None,
-        Field(
-            description='Registry policy IDs evaluated during this check (present for check entries).'
-        ),
+    purchase_type: Annotated[
+        purchase_type_1.PurchaseType | None, Field(description='Purchase type for this entry.')
     ] = None
-    status: Annotated[
-        Status | None, Field(description='Governance check status (present for check entries).')
+    outcome_status: Annotated[
+        str | None, Field(description='Outcome status (present for outcome entries).')
     ] = None
-    timestamp: Annotated[AwareDatetime, Field(description='ISO 8601 timestamp.')]
-    tool: Annotated[str | None, Field(description='The AdCP tool (present for check entries).')] = (
-        None
+
+
+class GovernedAction(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
     )
-    type: Annotated[Type, Field(description='Entry type.')]
+    governance_context: Annotated[
+        str, Field(description="Governance context correlating this action's lifecycle.")
+    ]
+    purchase_type: Annotated[
+        purchase_type_1.PurchaseType, Field(description='Type of financial commitment.')
+    ]
+    status: Annotated[Status, Field(description='Action status.')]
+    committed: Annotated[float, Field(description='Budget committed for this action.')]
+    check_count: Annotated[
+        int, Field(description='Number of governance checks performed for this action.')
+    ]
+    seller_reference: Annotated[
+        str | None,
+        Field(
+            description="The seller's identifier for the resource (e.g., media_buy_id, rights_grant_id). Present when reported via report_plan_outcome."
+        ),
+    ] = None
 
 
 class Plan(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    plan_id: Annotated[str, Field(description='Plan identifier.')]
+    plan_version: Annotated[int, Field(description='Current plan version.')]
+    status: Annotated[Status, Field(description='Plan lifecycle status.')]
     budget: Annotated[Budget, Field(description='Budget state.')]
     channel_allocation: Annotated[
         dict[str, ChannelAllocation] | None,
         Field(description='Current channel mix. Keyed by channel ID.'),
     ] = None
+    summary: Annotated[Summary, Field(description='Aggregate validation and outcome statistics.')]
     entries: Annotated[
         list[Entry] | None,
         Field(description='Ordered audit trail. Only present when include_entries is true.'),
     ] = None
-    media_buys: Annotated[list[MediaBuy], Field(description='Per-media-buy breakdown.')]
-    plan_id: Annotated[str, Field(description='Plan identifier.')]
-    plan_version: Annotated[int, Field(description='Current plan version.')]
-    status: Annotated[Status6, Field(description='Plan lifecycle status.')]
-    summary: Annotated[Summary, Field(description='Aggregate validation and outcome statistics.')]
+    governed_actions: Annotated[
+        list[GovernedAction],
+        Field(description='Per-action breakdown grouped by governance context.'),
+    ]
 
 
 class GetPlanAuditLogsResponse(AdCPBaseModel):
@@ -317,3 +340,5 @@ class GetPlanAuditLogsResponse(AdCPBaseModel):
         extra='forbid',
     )
     plans: Annotated[list[Plan], Field(description='Audit data for each requested plan.')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/policy_category_definition.py b/src/adcp/types/generated_poc/governance/policy_category_definition.py
new file mode 100644
index 000000000..7f9e7bfea
--- /dev/null
+++ b/src/adcp/types/generated_poc/governance/policy_category_definition.py
@@ -0,0 +1,83 @@
+# generated by datamodel-codegen:
+#   filename:  governance/policy_category_definition.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..enums import restricted_attribute
+
+
+class RegulatoryFramework(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    name: Annotated[
+        str, Field(description="Name of the regulation or standard (e.g., 'US COPPA').")
+    ]
+    jurisdictions: Annotated[
+        list[str] | None,
+        Field(description='ISO 3166-1 alpha-2 codes where this framework applies.'),
+    ] = None
+    summary: Annotated[
+        str, Field(description='Brief summary of what the framework requires or prohibits.')
+    ]
+    policy_ids: Annotated[
+        list[str] | None, Field(description='Registry policy IDs that implement this framework.')
+    ] = None
+
+
+class PolicyCategoryDefinition(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    category_id: Annotated[
+        str,
+        Field(
+            description='Unique identifier for this category. Used in plan.policy_categories, signal-definition.policy_categories, and policy-entry.policy_categories.',
+            pattern='^[a-z][a-z0-9_]*$',
+        ),
+    ]
+    name: Annotated[
+        str, Field(description="Human-readable name (e.g., 'Children-Directed Content').")
+    ]
+    description: Annotated[
+        str,
+        Field(
+            description='What this category covers. Defines the boundary — what campaigns or data fall under this category.'
+        ),
+    ]
+    regulatory_frameworks: Annotated[
+        list[RegulatoryFramework] | None,
+        Field(
+            description='Key regulations and standards grouped under this category. Governance agents use this to resolve specific policies from the registry.'
+        ),
+    ] = None
+    restricted_attributes: Annotated[
+        list[restricted_attribute.RestrictedAttribute] | None,
+        Field(
+            description="Restricted attribute categories that regulations in this category prohibit for targeting. Governance agents enforce these when the category is active on a plan — if a plan declares policy_categories: ['fair_housing'], the governance agent restricts targeting on these attributes."
+        ),
+    ] = None
+    industries: Annotated[
+        list[str] | None,
+        Field(
+            description="Industries where this category commonly applies (e.g., 'pharmaceutical' for age_restricted). Governance agents MAY suggest relevant categories when a plan's brand industry matches but no policy_categories are declared."
+        ),
+    ] = None
+    guidance: Annotated[
+        str | None,
+        Field(
+            description='Implementation notes for governance agents. Edge cases, disambiguation, and common pitfalls.'
+        ),
+    ] = None
+    related_categories: Annotated[
+        list[str] | None,
+        Field(
+            description="Categories that frequently co-occur (e.g., 'children_directed' often appears with 'age_restricted')."
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/governance/policy_entry.py b/src/adcp/types/generated_poc/governance/policy_entry.py
index 9c1dc63a5..9ded3894f 100644
--- a/src/adcp/types/generated_poc/governance/policy_entry.py
+++ b/src/adcp/types/generated_poc/governance/policy_entry.py
@@ -1,10 +1,11 @@
 # generated by datamodel-codegen:
 #   filename:  governance/policy_entry.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
 from datetime import date as date_aliased
+from enum import Enum
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
@@ -15,53 +16,70 @@
 from ..enums import governance_domain, policy_category, policy_enforcement
 
 
+class Source(Enum):
+    registry = 'registry'
+    inline = 'inline'
+
+
 class Exemplar(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    explanation: Annotated[str, Field(description='Why this scenario passes or fails the policy.')]
     scenario: Annotated[
         str,
         Field(description='A concrete scenario describing an advertising action or configuration.'),
     ]
+    explanation: Annotated[str, Field(description='Why this scenario passes or fails the policy.')]
 
 
 class Exemplars(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    fail: Annotated[
-        list[Exemplar] | None, Field(description='Scenarios that violate this policy.')
-    ] = None
     pass_: Annotated[
         list[Exemplar] | None,
         Field(alias='pass', description='Scenarios that comply with this policy.'),
     ] = None
+    fail: Annotated[
+        list[Exemplar] | None, Field(description='Scenarios that violate this policy.')
+    ] = None
 
 
 class PolicyEntry(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    category: Annotated[
-        policy_category.PolicyCategory,
+    policy_id: Annotated[
+        str,
         Field(
-            description='The nature of the obligation: regulation (legal requirement) or standard (best practice).'
+            description='Unique identifier for this policy. Registry-published ids are canonical (e.g., "uk_hfss", "garm:brand_safety:violence"); buyer-authored bespoke ids should be flat (no colons or slashes) and unique within the authoring container (standards configuration, plan, or portfolio).'
         ),
     ]
-    channels: Annotated[
-        list[channels_1.MediaChannel] | None,
+    source: Annotated[
+        Source | None,
         Field(
-            description='Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.'
+            description="Origin of this policy. 'registry' = published to the shared AdCP policy registry with full regulatory metadata. 'inline' = authored bespoke for a specific standards configuration, plan, or portfolio. Defaults to 'inline'. Governance agents MUST set 'registry' when publishing to the registry."
+        ),
+    ] = Source.inline
+    version: Annotated[
+        str | None,
+        Field(
+            description='Semver version string (e.g., "1.0.0"). Incremented when policy content changes. Optional for inline bespoke policies — defaults to "1.0.0". SHOULD be provided for registry-published policies.'
+        ),
+    ] = None
+    name: Annotated[
+        str | None,
+        Field(
+            description='Human-readable name (e.g., "UK HFSS Restrictions"). Optional for inline bespoke policies — servers MAY default to policy_id.'
         ),
     ] = None
     description: Annotated[
         str | None, Field(description='Brief summary of what this policy covers.')
     ] = None
-    effective_date: Annotated[
-        date_aliased | None,
+    category: Annotated[
+        policy_category.PolicyCategory | None,
         Field(
-            description='ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level.'
+            description='The nature of the obligation: regulation (legal requirement) or standard (best practice). Optional for inline bespoke policies — defaults to "standard".'
         ),
     ] = None
     enforcement: Annotated[
@@ -70,74 +88,73 @@ class PolicyEntry(AdCPBaseModel):
             description='How governance agents treat violations. Regulations are typically "must"; standards are typically "should".'
         ),
     ]
-    exemplars: Annotated[
-        Exemplars | None,
-        Field(
-            description='Calibration examples for governance agents, following the Content Standards pattern.'
-        ),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    governance_domains: Annotated[
-        list[governance_domain.GovernanceDomain] | None,
-        Field(
-            description='Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains ["creative", "property"] can be declared as a feature by both creative and property governance agents.'
-        ),
-    ] = None
-    guidance: Annotated[
-        str | None,
-        Field(
-            description='Implementation notes for governance agent developers. Not used in evaluation prompts.'
-        ),
-    ] = None
     jurisdictions: Annotated[
         list[str] | None,
         Field(
             description='ISO 3166-1 alpha-2 country codes where this policy applies. Empty array means the policy is not jurisdiction-specific.'
         ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable name (e.g., "UK HFSS Restrictions").')]
-    policy: Annotated[
-        str,
+    region_aliases: Annotated[
+        dict[str, list[str]] | None,
         Field(
-            description='Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy.'
+            description='Named groups of jurisdictions for convenience (e.g., {"EU": ["AT","BE","BG",...]}). Governance agents expand aliases when matching against a plan\'s target jurisdictions.'
         ),
-    ]
+    ] = None
     policy_categories: Annotated[
         list[str] | None,
         Field(
             description='Regulatory categories this policy belongs to (e.g., ["children_directed", "age_restricted"]). Used for automatic matching against a campaign plan\'s declared policy_categories. A single policy can belong to multiple categories.'
         ),
     ] = None
-    policy_id: Annotated[
-        str,
+    channels: Annotated[
+        list[channels_1.MediaChannel] | None,
         Field(
-            description='Unique identifier for this policy (e.g., "uk_hfss", "us_coppa", "alcohol_advertising").'
+            description='Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.'
         ),
-    ]
-    region_aliases: Annotated[
-        dict[str, list[str]] | None,
+    ] = None
+    governance_domains: Annotated[
+        list[governance_domain.GovernanceDomain] | None,
         Field(
-            description='Named groups of jurisdictions for convenience (e.g., {"EU": ["AT","BE","BG",...]}). Governance agents expand aliases when matching against a plan\'s target jurisdictions.'
+            description='Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains ["creative", "property"] can be declared as a feature by both creative and property governance agents.'
         ),
     ] = None
-    source_name: Annotated[
-        str | None,
+    effective_date: Annotated[
+        date_aliased | None,
         Field(
-            description='Name of the issuing body (e.g., "UK Food Standards Agency", "US Federal Trade Commission").'
+            description='ISO 8601 date when the regulation or standard takes effect. Before this date, governance agents treat the policy as informational (evaluate but do not block). After this date, the policy is enforced at its declared enforcement level.'
         ),
     ] = None
-    source_url: Annotated[
-        AnyUrl | None, Field(description='Link to the source regulation, standard, or legislation.')
-    ] = None
     sunset_date: Annotated[
         date_aliased | None,
         Field(
             description='ISO 8601 date when the regulation or standard is no longer enforced. After this date, governance agents stop evaluating this policy. Omit if the policy has no expiration.'
         ),
     ] = None
-    version: Annotated[
+    source_url: Annotated[
+        AnyUrl | None, Field(description='Link to the source regulation, standard, or legislation.')
+    ] = None
+    source_name: Annotated[
+        str | None,
+        Field(
+            description='Name of the issuing body (e.g., "UK Food Standards Agency", "US Federal Trade Commission").'
+        ),
+    ] = None
+    policy: Annotated[
         str,
         Field(
-            description='Semver version string (e.g., "1.0.0"). Incremented when policy content changes.'
+            description='Natural language policy text describing what is required, prohibited, or recommended. Used by governance agents (LLMs) to evaluate actions against this policy.'
         ),
     ]
+    guidance: Annotated[
+        str | None,
+        Field(
+            description='Implementation notes for governance agent developers. Not used in evaluation prompts.'
+        ),
+    ] = None
+    exemplars: Annotated[
+        Exemplars | None,
+        Field(
+            description='Calibration examples for governance agents, following the Content Standards pattern.'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/policy_ref.py b/src/adcp/types/generated_poc/governance/policy_ref.py
index 9a26ee581..9f09ab040 100644
--- a/src/adcp/types/generated_poc/governance/policy_ref.py
+++ b/src/adcp/types/generated_poc/governance/policy_ref.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/policy_ref.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,12 +14,6 @@ class PolicyReference(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    config: Annotated[
-        dict[str, Any] | None,
-        Field(
-            description="Brand-specific parameter overrides for configurable policies. The accepted shape depends on the policy's config_schema."
-        ),
-    ] = None
     policy_id: Annotated[
         str,
         Field(
@@ -32,3 +26,9 @@ class PolicyReference(AdCPBaseModel):
             description='Pin a specific policy version (semver). If omitted, the current version is used.'
         ),
     ] = None
+    config: Annotated[
+        dict[str, Any] | None,
+        Field(
+            description="Brand-specific parameter overrides for configurable policies. The accepted shape depends on the policy's config_schema."
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/governance/report_plan_outcome_request.py b/src/adcp/types/generated_poc/governance/report_plan_outcome_request.py
index 50cee6fbd..13b2bfc3e 100644
--- a/src/adcp/types/generated_poc/governance/report_plan_outcome_request.py
+++ b/src/adcp/types/generated_poc/governance/report_plan_outcome_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/report_plan_outcome_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,38 +9,45 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AwareDatetime, ConfigDict, Field
 
+from ..core import context as context_1
+from ..core import ext as ext_1
 from ..core import planned_delivery as planned_delivery_1
 from ..enums import outcome_type
+from ..enums import purchase_type as purchase_type_1
+
+
+class Package(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    budget: Annotated[float | None, Field(ge=0.0)] = None
 
 
 class ReportingPeriod(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    end: AwareDatetime
     start: AwareDatetime
+    end: AwareDatetime
 
 
 class Delivery(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    completion_rate: Annotated[float | None, Field(description='Video completion rate (0-1).')] = (
-        None
-    )
-    cpm: Annotated[float | None, Field(description='Effective CPM for the period.')] = None
-    impressions: Annotated[
-        int | None, Field(description='Impressions delivered in the period.', ge=0)
-    ] = None
-    media_buy_id: Annotated[str | None, Field(description='The media buy being reported on.')] = (
-        None
-    )
     reporting_period: Annotated[
         ReportingPeriod | None,
         Field(description='Start and end timestamps for the reporting window.'),
     ] = None
+    impressions: Annotated[
+        int | None, Field(description='Impressions delivered in the period.', ge=0)
+    ] = None
     spend: Annotated[float | None, Field(description='Spend in the period.')] = None
+    cpm: Annotated[float | None, Field(description='Effective CPM for the period.')] = None
     viewability_rate: Annotated[float | None, Field(description='Viewability rate (0-1).')] = None
+    completion_rate: Annotated[float | None, Field(description='Video completion rate (0-1).')] = (
+        None
+    )
 
 
 class Error(AdCPBaseModel):
@@ -51,17 +58,17 @@ class Error(AdCPBaseModel):
     message: Annotated[str | None, Field(description='Human-readable error description.')] = None
 
 
-class Package(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    budget: Annotated[float | None, Field(ge=0.0)] = None
-
-
 class SellerResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    seller_reference: Annotated[
+        str | None,
+        Field(
+            description="The seller's identifier for the created resource (e.g., media_buy_id, rights_grant_id, deployment_id). Not interpreted by the governance agent — included in audit logs for human-readable traceability alongside the opaque governance_context.",
+            max_length=255,
+        ),
+    ] = None
     committed_budget: Annotated[
         float | None,
         Field(
@@ -69,10 +76,6 @@ class SellerResponse(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    creative_deadline: Annotated[
-        AwareDatetime | None, Field(description='ISO 8601 deadline for creative submission.')
-    ] = None
-    media_buy_id: Annotated[str | None, Field(description="Seller's media buy identifier.")] = None
     packages: Annotated[
         list[Package] | None,
         Field(description='Confirmed packages with actual budget and targeting.'),
@@ -83,18 +86,50 @@ class SellerResponse(AdCPBaseModel):
             description="What the seller said it will deliver. When seller-side governance is not configured, this is the governance agent's only view of the seller's delivery parameters."
         ),
     ] = None
+    creative_deadline: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 deadline for creative submission.')
+    ] = None
 
 
 class ReportPlanOutcomeRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    plan_id: Annotated[str, Field(description='The plan this outcome is for.')]
     check_id: Annotated[
         str | None,
         Field(
             description="The check_id from check_governance. Links the outcome to the governance check that authorized it. Required for 'completed' and 'failed' outcomes."
         ),
     ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate outcome reports on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    purchase_type: Annotated[
+        purchase_type_1.PurchaseType | None,
+        Field(
+            description="The type of financial commitment this outcome is for. Determines which budget allocation (if any) to charge against. Defaults to 'media_buy' when omitted."
+        ),
+    ] = purchase_type_1.PurchaseType.media_buy
+    outcome: Annotated[outcome_type.OutcomeType, Field(description='Outcome type.')]
+    seller_response: Annotated[
+        SellerResponse | None,
+        Field(description="The seller's full response. Required when outcome is 'completed'."),
+    ] = None
     delivery: Annotated[
         Delivery | None, Field(description="Delivery metrics. Required when outcome is 'delivery'.")
     ] = None
@@ -110,17 +145,5 @@ class ReportPlanOutcomeRequest(AdCPBaseModel):
             pattern='^[\\x20-\\x7E]+$',
         ),
     ]
-    idempotency_key: Annotated[
-        str | None,
-        Field(
-            description='Client-generated unique key for this request. Prevents duplicate outcome reports on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
-        ),
-    ] = None
-    outcome: Annotated[outcome_type.OutcomeType, Field(description='Outcome type.')]
-    plan_id: Annotated[str, Field(description='The plan this outcome is for.')]
-    seller_response: Annotated[
-        SellerResponse | None,
-        Field(description="The seller's full response. Required when outcome is 'completed'."),
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/report_plan_outcome_response.py b/src/adcp/types/generated_poc/governance/report_plan_outcome_response.py
index bc487b9be..e28ec9f2f 100644
--- a/src/adcp/types/generated_poc/governance/report_plan_outcome_response.py
+++ b/src/adcp/types/generated_poc/governance/report_plan_outcome_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/report_plan_outcome_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,44 +10,53 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
+from ..core import ext as ext_1
 from ..enums import escalation_severity
 
 
+class Status(Enum):
+    accepted = 'accepted'
+    findings = 'findings'
+
+
 class Finding(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
     category_id: Annotated[str, Field(description='Which validation category flagged the issue.')]
-    details: Annotated[
-        dict[str, Any] | None, Field(description='Structured details for programmatic consumption.')
-    ] = None
-    explanation: Annotated[str, Field(description='Human-readable description of the issue.')]
     severity: Annotated[
         escalation_severity.EscalationSeverity, Field(description='Finding severity.')
     ]
+    explanation: Annotated[str, Field(description='Human-readable description of the issue.')]
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Structured details for programmatic consumption.')
+    ] = None
 
 
 class PlanSummary(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    budget_remaining: Annotated[
-        float | None, Field(description='Authorized budget minus total committed.')
-    ] = None
     total_committed: Annotated[
         float | None, Field(description='Total budget committed across all campaigns in the plan.')
     ] = None
-
-
-class Status(Enum):
-    accepted = 'accepted'
-    findings = 'findings'
+    budget_remaining: Annotated[
+        float | None, Field(description='Authorized budget minus total committed.')
+    ] = None
 
 
 class ReportPlanOutcomeResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    outcome_id: Annotated[str, Field(description='Unique identifier for this outcome record.')]
+    status: Annotated[
+        Status,
+        Field(
+            description="'accepted' means state updated with no issues. 'findings' means issues were detected."
+        ),
+    ]
     committed_budget: Annotated[
         float | None,
         Field(
@@ -58,16 +67,11 @@ class ReportPlanOutcomeResponse(AdCPBaseModel):
         list[Finding] | None,
         Field(description="Issues detected. Present only when status is 'findings'."),
     ] = None
-    outcome_id: Annotated[str, Field(description='Unique identifier for this outcome record.')]
     plan_summary: Annotated[
         PlanSummary | None,
         Field(
             description="Updated plan budget state. Present for 'completed' and 'failed' outcomes."
         ),
     ] = None
-    status: Annotated[
-        Status,
-        Field(
-            description="'accepted' means state updated with no issues. 'findings' means issues were detected."
-        ),
-    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/sync_plans_request.py b/src/adcp/types/generated_poc/governance/sync_plans_request.py
index 8753b9e84..416b2b034 100644
--- a/src/adcp/types/generated_poc/governance/sync_plans_request.py
+++ b/src/adcp/types/generated_poc/governance/sync_plans_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/sync_plans_request.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,22 +10,41 @@
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
 from ..core import brand_ref
+from ..core import context as context_1
 from ..core import ext as ext_1
 from ..enums import budget_authority_level
 from ..enums import channels as channels_1
-from ..enums import delegation_authority, restricted_attribute
-from . import audience_constraints
+from ..enums import delegation_authority, purchase_type, restricted_attribute
+from . import audience_constraints, policy_entry
+
+
+class Allocations(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    amount: Annotated[
+        float | None, Field(description='Maximum budget for this purchase type.', ge=0.0)
+    ] = None
+    max_pct: Annotated[
+        float | None,
+        Field(
+            description='Maximum percentage of total budget for this purchase type.',
+            ge=0.0,
+            le=100.0,
+        ),
+    ] = None
 
 
 class Budget(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    total: Annotated[float, Field(description='Total authorized budget.')]
+    currency: Annotated[str, Field(description='ISO 4217 currency code.')]
     authority_level: Annotated[
         budget_authority_level.BudgetAuthorityLevel,
         Field(description='Budget authority level for the orchestrator agent.'),
     ]
-    currency: Annotated[str, Field(description='ISO 4217 currency code.')]
     per_seller_max_pct: Annotated[
         float | None,
         Field(description='Maximum percentage of budget that can go to a single seller.'),
@@ -36,21 +55,30 @@ class Budget(AdCPBaseModel):
             description='Amount above which reallocations require escalation (for agent_limited).'
         ),
     ] = None
-    total: Annotated[float, Field(description='Total authorized budget.')]
+    allocations: Annotated[
+        dict[purchase_type.PurchaseType, Allocations] | None,
+        Field(
+            description='Optional budget partition across purchase types. Keys are purchase-type enum values (media_buy, rights_license, signal_activation, creative_services). When present, the governance agent validates spend against both the total and the per-type allocation. When absent, all spend counts against the single total regardless of purchase type.'
+        ),
+    ] = None
 
 
 class MixTargets(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    max_pct: float | None = None
     min_pct: float | None = None
+    max_pct: float | None = None
 
 
 class Channels(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    required: Annotated[
+        list[channels_1.MediaChannel] | None,
+        Field(description='Channels that must be included in the media mix.'),
+    ] = None
     allowed: Annotated[
         list[channels_1.MediaChannel] | None,
         Field(description='Channels the orchestrator may use.'),
@@ -59,10 +87,14 @@ class Channels(AdCPBaseModel):
         dict[str, MixTargets] | None,
         Field(description='Target allocation ranges per channel, keyed by channel ID.'),
     ] = None
-    required: Annotated[
-        list[channels_1.MediaChannel] | None,
-        Field(description='Channels that must be included in the media mix.'),
-    ] = None
+
+
+class Flight(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    start: Annotated[AwareDatetime, Field(description='Flight start (ISO 8601).')]
+    end: Annotated[AwareDatetime, Field(description='Flight end (ISO 8601).')]
 
 
 class BudgetLimit(AdCPBaseModel):
@@ -88,29 +120,22 @@ class Delegation(AdCPBaseModel):
             description="Maximum budget this agent can commit. When omitted, the agent can commit up to the plan's total budget."
         ),
     ] = None
-    expires_at: Annotated[
-        AwareDatetime | None,
-        Field(
-            description='When this delegation expires. After expiration, the governance agent denies actions from this agent.'
-        ),
-    ] = None
     markets: Annotated[
         list[str] | None,
         Field(
             description='ISO 3166-1/3166-2 codes this agent is authorized for. When omitted, the agent can operate in all plan markets.'
         ),
     ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this delegation expires. After expiration, the governance agent denies actions from this agent.'
+        ),
+    ] = None
 
 
-class Flight(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    end: Annotated[AwareDatetime, Field(description='Flight end (ISO 8601).')]
-    start: Annotated[AwareDatetime, Field(description='Flight start (ISO 8601).')]
-
-
-TotalBudgetCap = BudgetLimit
+class TotalBudgetCap(BudgetLimit):
+    pass
 
 
 class Portfolio(AdCPBaseModel):
@@ -123,11 +148,9 @@ class Portfolio(AdCPBaseModel):
             description='Plan IDs governed by this portfolio plan. The governance agent validates member plan actions against portfolio constraints.'
         ),
     ]
-    shared_exclusions: Annotated[
-        list[str] | None,
-        Field(
-            description="Natural language exclusion rules applied across all member plans (e.g., 'No advertising on properties owned by competitor holding companies')."
-        ),
+    total_budget_cap: Annotated[
+        TotalBudgetCap | None,
+        Field(description='Maximum aggregate budget across all member plans.'),
     ] = None
     shared_policy_ids: Annotated[
         list[str] | None,
@@ -135,9 +158,11 @@ class Portfolio(AdCPBaseModel):
             description='Registry policy IDs enforced across all member plans, regardless of individual brand configuration.'
         ),
     ] = None
-    total_budget_cap: Annotated[
-        TotalBudgetCap | None,
-        Field(description='Maximum aggregate budget across all member plans.'),
+    shared_exclusions: Annotated[
+        list[policy_entry.PolicyEntry] | None,
+        Field(
+            description="Bespoke exclusion policies applied across all member plans, using the same shape as registry entries. Authored typically as enforcement: must policies with exclusion language in the policy text (e.g., 'No advertising on properties owned by competitor holding companies')."
+        ),
     ] = None
 
 
@@ -145,71 +170,41 @@ class Plan(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    approved_sellers: Annotated[
-        list[AnyUrl] | None,
-        Field(description='List of approved seller agent URLs. null means any seller.'),
-    ] = None
-    audience: Annotated[
-        audience_constraints.AudienceConstraints | None,
-        Field(
-            description='Audience targeting constraints. Defines who the campaign should reach (include) and must not reach (exclude). The governance agent evaluates seller targeting against these constraints.'
-        ),
-    ] = None
+    plan_id: Annotated[str, Field(description='Unique identifier for this plan.')]
     brand: Annotated[
         brand_ref.BrandReference,
         Field(
             description="Brand or organization being governed. For campaign plans, the governance agent resolves the brand's compliance configuration. For portfolio plans, this is the holding company or parent organization."
         ),
     ]
+    objectives: Annotated[
+        str,
+        Field(
+            description='Natural language campaign objectives. Used for strategic alignment validation.'
+        ),
+    ]
     budget: Annotated[Budget, Field(description='Budget authorization parameters.')]
     channels: Annotated[
         Channels | None,
         Field(description='Channel constraints. If omitted, all channels are allowed.'),
     ] = None
-    countries: Annotated[
-        list[str] | None,
-        Field(
-            description="ISO 3166-1 alpha-2 country codes for authorized markets (e.g., ['US', 'GB']). The governance agent rejects media buys targeting outside these countries and resolves applicable policies by matching against policy jurisdictions.",
-            min_length=1,
-        ),
-    ] = None
-    custom_policies: Annotated[
-        list[str] | None,
-        Field(
-            description="Natural language policy statements specific to this campaign (e.g., 'No advertising adjacent to competitor content'). Applied regardless of geography."
-        ),
-    ] = None
-    delegations: Annotated[
-        list[Delegation] | None,
-        Field(
-            description="Agents authorized to execute against this plan. Each delegation scopes an agent's authority by budget, markets, and expiration. The governance agent validates that the requesting agent matches a delegation before approving actions."
-        ),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     flight: Annotated[
         Flight,
         Field(
-            description='Authorized flight dates. Media buys with dates outside this window are rejected.'
+            description='Authorized flight dates. Governed actions with dates outside this window are rejected.'
         ),
     ]
-    min_audience_size: Annotated[
-        int | None,
+    countries: Annotated[
+        list[str] | None,
         Field(
-            description='Minimum audience segment size. Prevents micro-targeting by ensuring segments meet a k-anonymity threshold. Applies to the estimated combined (intersection) audience when multiple criteria are used, not just individual criterion sizes. The governance agent validates this by querying signal catalog metadata or seller-reported segment sizes. When segment size data is unavailable, the governance agent SHOULD produce a finding with reduced confidence rather than silently passing.',
-            ge=1,
+            description="ISO 3166-1 alpha-2 country codes for authorized markets (e.g., ['US', 'GB']). The governance agent rejects governed actions targeting outside these countries and resolves applicable policies by matching against policy jurisdictions.",
+            min_length=1,
         ),
     ] = None
-    objectives: Annotated[
-        str,
-        Field(
-            description='Natural language campaign objectives. Used for strategic alignment validation.'
-        ),
-    ]
-    plan_id: Annotated[str, Field(description='Unique identifier for this plan.')]
-    policy_categories: Annotated[
+    regions: Annotated[
         list[str] | None,
         Field(
-            description="Regulatory categories that apply to this campaign. Determines which policy regimes the governance agent enforces (e.g., 'children_directed' activates COPPA/AADC, 'political_advertising' activates disclosure requirements). The governance agent resolves categories to specific policies based on the plan's jurisdictions. When omitted, governance agents MAY infer categories from the brand's industries and the plan's objectives. Values are registry-defined category IDs (intentionally freeform strings, not an enum — new categories are added as regulations evolve).",
+            description="ISO 3166-2 subdivision codes for authorized sub-national markets (e.g., ['US-MA', 'US-CA']). When present, the governance agent restricts governed actions to these specific regions rather than the full country. Use for plans limited to specific states or provinces (e.g., cannabis in legal states). Policy resolution matches against both the subdivision and its parent country.",
             min_length=1,
         ),
     ] = None
@@ -219,17 +214,17 @@ class Plan(AdCPBaseModel):
             description="Registry policy IDs to enforce for this plan. The governance agent resolves full policy definitions from the registry and evaluates actions against them. Intersected with the plan's countries/regions to activate only geographically relevant policies."
         ),
     ] = None
-    portfolio: Annotated[
-        Portfolio | None,
+    policy_categories: Annotated[
+        list[str] | None,
         Field(
-            description='Portfolio-level governance constraints. When present, this plan acts as a portfolio plan that governs member plans. Portfolio plans define cross-brand constraints that no individual brand plan can override.'
+            description="Regulatory categories that apply to this campaign. Determines which policy regimes the governance agent enforces (e.g., 'children_directed' activates COPPA/AADC, 'political_advertising' activates disclosure requirements). The governance agent resolves categories to specific policies based on the plan's jurisdictions. When omitted, governance agents MAY infer categories from the brand's industries and the plan's objectives. Values are registry-defined category IDs (intentionally freeform strings, not an enum — new categories are added as regulations evolve).",
+            min_length=1,
         ),
     ] = None
-    regions: Annotated[
-        list[str] | None,
+    audience: Annotated[
+        audience_constraints.AudienceConstraints | None,
         Field(
-            description="ISO 3166-2 subdivision codes for authorized sub-national markets (e.g., ['US-MA', 'US-CA']). When present, the governance agent restricts buys to these specific regions rather than the full country. Use for campaigns limited to specific states or provinces (e.g., cannabis in legal states). Policy resolution matches against both the subdivision and its parent country.",
-            min_length=1,
+            description='Audience targeting constraints. Defines who the campaign should reach (include) and must not reach (exclude). The governance agent evaluates seller targeting against these constraints.'
         ),
     ] = None
     restricted_attributes: Annotated[
@@ -246,10 +241,59 @@ class Plan(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    min_audience_size: Annotated[
+        int | None,
+        Field(
+            description='Minimum audience segment size. Prevents micro-targeting by ensuring segments meet a k-anonymity threshold. Applies to the estimated combined (intersection) audience when multiple criteria are used, not just individual criterion sizes. The governance agent validates this by querying signal catalog metadata or seller-reported segment sizes. When segment size data is unavailable, the governance agent SHOULD produce a finding with reduced confidence rather than silently passing.',
+            ge=1,
+        ),
+    ] = None
+    custom_policies: Annotated[
+        list[policy_entry.PolicyEntry] | None,
+        Field(
+            description='Bespoke policies specific to this campaign, using the same shape as registry entries. Each policy has a policy_id, enforcement (must|should), and natural-language policy text. Governance findings reference policy_id to identify which policy triggered. For quick authoring, omit version/name/category — servers default them.'
+        ),
+    ] = None
+    approved_sellers: Annotated[
+        list[AnyUrl] | None,
+        Field(description='List of approved seller agent URLs. null means any seller.'),
+    ] = None
+    delegations: Annotated[
+        list[Delegation] | None,
+        Field(
+            description="Agents authorized to execute against this plan. Each delegation scopes an agent's authority by budget, markets, and expiration. The governance agent validates that the requesting agent matches a delegation before approving actions."
+        ),
+    ] = None
+    portfolio: Annotated[
+        Portfolio | None,
+        Field(
+            description='Portfolio-level governance constraints. When present, this plan acts as a portfolio plan that governs member plans. Portfolio plans define cross-brand constraints that no individual brand plan can override.'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class SyncPlansRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `plan_id` gives resource-level dedup per plan, but the sync envelope emits audit events and can trigger governance reapproval — this key prevents those side effects from firing twice on retry. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
     plans: Annotated[list[Plan], Field(description='One or more campaign plans to sync.')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/governance/sync_plans_response.py b/src/adcp/types/generated_poc/governance/sync_plans_response.py
index b4ad6d12b..9d743a226 100644
--- a/src/adcp/types/generated_poc/governance/sync_plans_response.py
+++ b/src/adcp/types/generated_poc/governance/sync_plans_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/sync_plans_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,10 +10,17 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
+from ..core import ext as ext_1
 from ..enums import policy_enforcement
 
 
 class Status(Enum):
+    active = 'active'
+    error = 'error'
+
+
+class Status37(Enum):
     active = 'active'
     inactive = 'inactive'
 
@@ -23,7 +30,7 @@ class Category(AdCPBaseModel):
         extra='forbid',
     )
     category_id: Annotated[str, Field(description='Validation category identifier.')]
-    status: Annotated[Status, Field(description='Whether this category is active for this plan.')]
+    status: Annotated[Status37, Field(description='Whether this category is active for this plan.')]
 
 
 class Source(Enum):
@@ -35,51 +42,46 @@ class ResolvedPolicy(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    policy_id: Annotated[str, Field(description='Registry policy ID.')]
+    source: Annotated[
+        Source,
+        Field(
+            description="How this policy was included. 'explicit': referenced in the brand compliance configuration. 'auto_applied': matched automatically by jurisdiction or policy category."
+        ),
+    ]
     enforcement: Annotated[
         policy_enforcement.PolicyEnforcementLevel,
         Field(description='Enforcement level for this policy.'),
     ]
-    policy_id: Annotated[str, Field(description='Registry policy ID.')]
     reason: Annotated[
         str | None,
         Field(
             description="Why this policy was included (e.g., 'Matched jurisdiction US and policy category pharmaceutical_advertising')."
         ),
     ] = None
-    source: Annotated[
-        Source,
-        Field(
-            description="How this policy was included. 'explicit': referenced in the brand compliance configuration. 'auto_applied': matched automatically by jurisdiction or policy category."
-        ),
-    ]
-
-
-class Status15(Enum):
-    active = 'active'
-    error = 'error'
 
 
 class Plan(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    plan_id: Annotated[str, Field(description='Plan identifier.')]
+    status: Annotated[
+        Status,
+        Field(
+            description="Sync result status. 'active' means sync succeeded; 'error' means sync failed."
+        ),
+    ]
+    version: Annotated[int, Field(description='Plan version (increments on each sync).')]
     categories: Annotated[
         list[Category] | None, Field(description='Validation categories active for this plan.')
     ] = None
-    plan_id: Annotated[str, Field(description='Plan identifier.')]
     resolved_policies: Annotated[
         list[ResolvedPolicy] | None,
         Field(
             description='Policies the governance agent will enforce for this plan. Includes explicitly referenced policies from the brand compliance configuration and auto-applied policies matched by jurisdiction or policy category. Present when the governance agent supports policy resolution.'
         ),
     ] = None
-    status: Annotated[
-        Status15,
-        Field(
-            description="Sync result status. 'active' means sync succeeded; 'error' means sync failed."
-        ),
-    ]
-    version: Annotated[int, Field(description='Plan version (increments on each sync).')]
 
 
 class SyncPlansResponse(AdCPBaseModel):
@@ -87,3 +89,5 @@ class SyncPlansResponse(AdCPBaseModel):
         extra='forbid',
     )
     plans: Annotated[list[Plan], Field(description='Status for each synced plan.')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/build_creative_request.py b/src/adcp/types/generated_poc/media_buy/build_creative_request.py
index 55af623d4..619cbe149 100644
--- a/src/adcp/types/generated_poc/media_buy/build_creative_request.py
+++ b/src/adcp/types/generated_poc/media_buy/build_creative_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/build_creative_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,7 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
-from ..core import brand_ref
+from ..core import account_ref, brand_ref
 from ..core import context as context_1
 from ..core import creative_manifest as creative_manifest_1
 from ..core import ext as ext_1
@@ -22,94 +22,111 @@ class PreviewInput(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context_description: Annotated[
-        str | None,
-        Field(description='Natural language description of the context for AI-generated content'),
-    ] = None
-    macros: Annotated[
-        dict[str, str] | None, Field(description='Macro values to use for this preview variant')
-    ] = None
     name: Annotated[
         str,
         Field(
             description="Human-readable name for this input set (e.g., 'Sunny morning on mobile', 'Evening podcast ad')"
         ),
     ]
+    macros: Annotated[
+        dict[str, str] | None, Field(description='Macro values to use for this preview variant')
+    ] = None
+    context_description: Annotated[
+        str | None,
+        Field(description='Natural language description of the context for AI-generated content'),
+    ] = None
 
 
 class BuildCreativeRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    brand: Annotated[
-        brand_ref.BrandReference | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Brand reference for creative generation. Resolved to full brand identity (colors, logos, tone) at execution time.'
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    concept_id: Annotated[
+    message: Annotated[
         str | None,
         Field(
-            description='Creative concept containing the creative. Creative agents SHOULD assign globally unique creative_id values; when they cannot guarantee uniqueness, concept_id is REQUIRED to disambiguate.'
+            description='Natural language instructions for the transformation or generation. For pure generation, this is the creative brief. For transformation, this provides guidance on how to adapt the creative. For refinement, this describes the desired changes.'
+        ),
+    ] = None
+    creative_manifest: Annotated[
+        creative_manifest_1.CreativeManifest | None,
+        Field(
+            description='Creative manifest to transform or generate from. For pure generation, this should include the target format_id and any required input assets. For transformation (e.g., resizing, reformatting), this is the complete creative to adapt. When creative_id is provided, the agent resolves the creative from its library and this field is ignored.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     creative_id: Annotated[
         str | None,
         Field(
             description="Reference to a creative in the agent's library. The creative agent resolves this to a manifest from its library. Use this instead of creative_manifest when retrieving an existing creative for tag generation or format adaptation."
         ),
     ] = None
-    creative_manifest: Annotated[
-        creative_manifest_1.CreativeManifest | None,
+    concept_id: Annotated[
+        str | None,
         Field(
-            description='Creative manifest to transform or generate from. For pure generation, this should include the target format_id and any required input assets. For transformation (e.g., resizing, reformatting), this is the complete creative to adapt. When creative_id is provided, the agent resolves the creative from its library and this field is ignored.'
+            description='Creative concept containing the creative. Creative agents SHOULD assign globally unique creative_id values; when they cannot guarantee uniqueness, concept_id is REQUIRED to disambiguate.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    idempotency_key: Annotated[
+    media_buy_id: Annotated[
         str | None,
         Field(
-            description='Client-generated unique key for this request. Prevents duplicate creative generation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
+            description='Media buy identifier for tag generation context. When the creative agent is also the ad server, this provides the trafficking context needed to generate placement-specific tags (e.g., CM360 placement ID). Not needed when tags are generated at the creative level (most creative platforms).'
         ),
     ] = None
-    include_preview: Annotated[
-        bool | None,
+    package_id: Annotated[
+        str | None,
         Field(
-            description="When true, requests the creative agent to include preview renders in the response alongside the manifest. Agents that support this return a 'preview' object in the response using the same structure as preview_creative. Agents that do not support inline preview simply omit the field. This avoids a separate preview_creative round trip for platforms that generate previews as a byproduct of building."
+            description='Package identifier within the media buy. Used with media_buy_id when the creative agent needs line-item-level context for tag generation. Omit to get a tag not scoped to a specific package.'
         ),
     ] = None
-    item_limit: Annotated[
-        int | None,
+    target_format_id: Annotated[
+        format_id.FormatId | None,
         Field(
-            description="Maximum number of catalog items to use when generating. When a catalog asset contains more items than this limit, the creative agent selects the top items based on relevance or catalog ordering. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets.",
-            ge=1,
+            description='Single format ID to generate. Mutually exclusive with target_format_ids. The format definition specifies required input assets and output structure.'
         ),
     ] = None
-    macro_values: Annotated[
-        dict[str, str] | None,
+    target_format_ids: Annotated[
+        list[format_id.FormatId] | None,
         Field(
-            description="Macro values to pre-substitute into the output manifest's assets. Keys are universal macro names (e.g., CLICK_URL, CACHEBUSTER); values are the substitution strings. The creative agent translates universal macros to its platform's native syntax. Substitution is literal — all occurrences of each macro in output assets are replaced with the provided value. The caller is responsible for URL-encoding values if the output context requires it. Macros not provided here remain as {MACRO} placeholders for the sales agent to resolve at serve time. Creative agents MUST ignore keys they do not recognize — unknown macro names are not an error."
+            description='Array of format IDs to generate in a single call. Mutually exclusive with target_format_id. The creative agent produces one manifest per format. Each format definition specifies its own required input assets and output structure.',
+            min_length=1,
         ),
     ] = None
-    media_buy_id: Annotated[
-        str | None,
+    account: Annotated[
+        account_ref.AccountReference | None,
         Field(
-            description='Media buy identifier for tag generation context. When the creative agent is also the ad server, this provides the trafficking context needed to generate placement-specific tags (e.g., CM360 placement ID). Not needed when tags are generated at the creative level (most creative platforms).'
+            description='Account reference for pricing and billing. When present, the creative agent applies account-specific pricing from the rate card, records the build against the account for billing, and can enforce account-level quotas or entitlements. Required by creative agents that charge for their services.'
         ),
     ] = None
-    message: Annotated[
-        str | None,
+    brand: Annotated[
+        brand_ref.BrandReference | None,
         Field(
-            description='Natural language instructions for the transformation or generation. For pure generation, this is the creative brief. For transformation, this provides guidance on how to adapt the creative. For refinement, this describes the desired changes.'
+            description='Brand reference for creative generation. Resolved to full brand identity (colors, logos, tone) at execution time.'
         ),
     ] = None
-    package_id: Annotated[
-        str | None,
+    quality: Annotated[
+        creative_quality.CreativeQuality | None,
         Field(
-            description='Package identifier within the media buy. Used with media_buy_id when the creative agent needs line-item-level context for tag generation. Omit to get a tag not scoped to a specific package.'
+            description="Quality tier for generation. 'draft' produces fast, lower-fidelity output for iteration and review. 'production' produces full-quality output for final delivery. If omitted, the creative agent uses its own default. For non-generative transforms (e.g., format resizing), creative agents MAY ignore this field."
+        ),
+    ] = None
+    item_limit: Annotated[
+        int | None,
+        Field(
+            description="Maximum number of catalog items to use when generating. When a catalog asset contains more items than this limit, the creative agent selects the top items based on relevance or catalog ordering. When item_limit exceeds the format's max_items, the creative agent SHOULD use the lesser of the two. Ignored when the manifest contains no catalog assets.",
+            ge=1,
+        ),
+    ] = None
+    include_preview: Annotated[
+        bool | None,
+        Field(
+            description="When true, requests the creative agent to include preview renders in the response alongside the manifest. Agents that support this return a 'preview' object in the response using the same structure as preview_creative. Agents that do not support inline preview simply omit the field. This avoids a separate preview_creative round trip for platforms that generate previews as a byproduct of building."
         ),
     ] = None
     preview_inputs: Annotated[
@@ -119,34 +136,32 @@ class BuildCreativeRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    preview_output_format: Annotated[
-        preview_output_format_1.PreviewOutputFormat | None,
-        Field(
-            description="Output format for preview renders when include_preview is true. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). Ignored when include_preview is false or omitted."
-        ),
-    ] = preview_output_format_1.PreviewOutputFormat.url
     preview_quality: Annotated[
         creative_quality.CreativeQuality | None,
         Field(
             description="Render quality for inline preview when include_preview is true. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Independent of the build quality parameter — you can build at draft quality and preview at production quality, or vice versa. If omitted, the creative agent uses its own default. Ignored when include_preview is false or omitted."
         ),
     ] = None
-    quality: Annotated[
-        creative_quality.CreativeQuality | None,
+    preview_output_format: Annotated[
+        preview_output_format_1.PreviewOutputFormat | None,
         Field(
-            description="Quality tier for generation. 'draft' produces fast, lower-fidelity output for iteration and review. 'production' produces full-quality output for final delivery. If omitted, the creative agent uses its own default. For non-generative transforms (e.g., format resizing), creative agents MAY ignore this field."
+            description="Output format for preview renders when include_preview is true. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). Ignored when include_preview is false or omitted."
         ),
-    ] = None
-    target_format_id: Annotated[
-        format_id.FormatId | None,
+    ] = preview_output_format_1.PreviewOutputFormat.url
+    macro_values: Annotated[
+        dict[str, str] | None,
         Field(
-            description='Single format ID to generate. Mutually exclusive with target_format_ids. The format definition specifies required input assets and output structure.'
+            description="Macro values to pre-substitute into the output manifest's assets. Keys are universal macro names (e.g., CLICK_URL, CACHEBUSTER); values are the substitution strings. The creative agent translates universal macros to its platform's native syntax. Substitution is literal — all occurrences of each macro in output assets are replaced with the provided value. The caller is responsible for URL-encoding values if the output context requires it. Macros not provided here remain as {MACRO} placeholders for the sales agent to resolve at serve time. Creative agents MUST ignore keys they do not recognize — unknown macro names are not an error."
         ),
     ] = None
-    target_format_ids: Annotated[
-        list[format_id.FormatId] | None,
+    idempotency_key: Annotated[
+        str,
         Field(
-            description='Array of format IDs to generate in a single call. Mutually exclusive with target_format_id. The creative agent produces one manifest per format. Each format definition specifies its own required input assets and output structure.',
-            min_length=1,
+            description='Client-generated unique key for this request. Prevents duplicate creative generation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/build_creative_response.py b/src/adcp/types/generated_poc/media_buy/build_creative_response.py
index 5c528237b..3096262f1 100644
--- a/src/adcp/types/generated_poc/media_buy/build_creative_response.py
+++ b/src/adcp/types/generated_poc/media_buy/build_creative_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/build_creative_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,6 +10,7 @@
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
 from ..core import context as context_1
+from ..core import creative_consumption
 from ..core import creative_manifest as creative_manifest_1
 from ..core import error
 from ..core import ext as ext_1
@@ -21,35 +22,29 @@ class Input(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context_description: Annotated[
-        str | None, Field(description='Context description applied to this variant')
-    ] = None
+    name: Annotated[str, Field(description='Human-readable name for this variant')]
     macros: Annotated[
         dict[str, str] | None, Field(description='Macro values applied to this variant')
     ] = None
-    name: Annotated[str, Field(description='Human-readable name for this variant')]
+    context_description: Annotated[
+        str | None, Field(description='Context description applied to this variant')
+    ] = None
 
 
 class Input1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context_description: Annotated[
-        str | None, Field(description='Context description applied to this preview')
-    ] = None
+    name: Annotated[str, Field(description='Human-readable name for this preview')]
     macros: Annotated[
         dict[str, str] | None, Field(description='Macro values applied to this preview')
     ] = None
-    name: Annotated[str, Field(description='Human-readable name for this preview')]
+    context_description: Annotated[
+        str | None, Field(description='Context description applied to this preview')
+    ] = None
 
 
 class Preview1(AdCPBaseModel):
-    input: Annotated[
-        Input,
-        Field(
-            description='The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.'
-        ),
-    ]
     preview_id: Annotated[str, Field(description='Unique identifier for this preview variant')]
     renders: Annotated[
         list[preview_render.PreviewRender],
@@ -58,13 +53,20 @@ class Preview1(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    input: Annotated[
+        Input,
+        Field(
+            description='The input parameters that generated this preview variant. Echoes back the request input or shows defaults used.'
+        ),
+    ]
 
 
 class Preview(AdCPBaseModel):
-    expires_at: Annotated[
-        AwareDatetime,
+    previews: Annotated[
+        list[Preview1],
         Field(
-            description="ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
+            description='Array of preview variants. Each preview corresponds to an input set from preview_inputs, or a single default preview if no inputs were provided.',
+            min_length=1,
         ),
     ]
     interactive_url: Annotated[
@@ -73,29 +75,22 @@ class Preview(AdCPBaseModel):
             description='Optional URL to an interactive testing page that shows all preview variants with controls to switch between them.'
         ),
     ] = None
-    previews: Annotated[
-        list[Preview1],
+    expires_at: Annotated[
+        AwareDatetime,
         Field(
-            description='Array of preview variants. Each preview corresponds to an input set from preview_inputs, or a single default preview if no inputs were provided.',
-            min_length=1,
+            description="ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
         ),
     ]
 
 
 class Preview3(AdCPBaseModel):
+    preview_id: Annotated[str, Field(description='Unique identifier for this preview')]
     format_id: Annotated[
         format_id_1.FormatId,
         Field(
             description='The format this preview was generated for. Matches one of the requested target_format_ids.'
         ),
     ]
-    input: Annotated[
-        Input1,
-        Field(
-            description='The input parameters that generated this preview. For multi-format responses, this is always a default input.'
-        ),
-    ]
-    preview_id: Annotated[str, Field(description='Unique identifier for this preview')]
     renders: Annotated[
         list[preview_render.PreviewRender],
         Field(
@@ -103,13 +98,20 @@ class Preview3(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    input: Annotated[
+        Input1,
+        Field(
+            description='The input parameters that generated this preview. For multi-format responses, this is always a default input.'
+        ),
+    ]
 
 
 class Preview2(AdCPBaseModel):
-    expires_at: Annotated[
-        AwareDatetime,
+    previews: Annotated[
+        list[Preview3],
         Field(
-            description="ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
+            description='Array of preview entries, one per requested format. Array order matches creative_manifests. Each entry includes a format_id for explicit correlation.',
+            min_length=1,
         ),
     ]
     interactive_url: Annotated[
@@ -118,11 +120,10 @@ class Preview2(AdCPBaseModel):
             description='Optional URL to an interactive testing page that shows all format previews with controls to switch between them.'
         ),
     ] = None
-    previews: Annotated[
-        list[Preview3],
+    expires_at: Annotated[
+        AwareDatetime,
         Field(
-            description='Array of preview entries, one per requested format. Array order matches creative_manifests. Each entry includes a format_id for explicit correlation.',
-            min_length=1,
+            description="ISO 8601 timestamp when preview URLs expire. May differ from the manifest's expires_at."
         ),
     ]
 
@@ -131,13 +132,13 @@ class BuildCreativeResponse3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(
             description='Array of errors explaining why creative generation failed', min_length=1
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -145,18 +146,20 @@ class BuildCreativeResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     creative_manifest: Annotated[
         creative_manifest_1.CreativeManifest,
         Field(description='The generated or transformed creative manifest'),
     ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
     expires_at: Annotated[
         AwareDatetime | None,
         Field(
             description='ISO 8601 timestamp when generated asset URLs in the manifest expire. Set to the earliest expiration across all generated assets. Re-build the creative after this time to get fresh URLs.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     preview: Annotated[
         Preview | None,
         Field(
@@ -169,17 +172,37 @@ class BuildCreativeResponse1(AdCPBaseModel):
             description="When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Distinguishes 'agent does not support inline preview' (preview and preview_error both absent) from 'preview generation failed' (preview absent, preview_error present). Omitted when preview succeeded or was not requested."
         ),
     ] = None
-    sandbox: Annotated[
-        bool | None,
-        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description='Which rate card pricing option was applied for this build. Present when the creative agent charges for its services. Pass this in report_usage to identify which pricing option was applied.'
+        ),
+    ] = None
+    vendor_cost: Annotated[
+        float | None,
+        Field(
+            description='Cost incurred for this build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time rather than build time.',
+            ge=0.0,
+        ),
     ] = None
+    currency: Annotated[
+        str | None,
+        Field(description='ISO 4217 currency code for vendor_cost.', pattern='^[A-Z]{3}$'),
+    ] = None
+    consumption: Annotated[
+        creative_consumption.CreativeConsumption | None,
+        Field(
+            description='Structured consumption details for this build. Informational — lets the buyer verify that vendor_cost is consistent with the rate card. vendor_cost is the billing source of truth.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class BuildCreativeResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     creative_manifests: Annotated[
         list[creative_manifest_1.CreativeManifest],
         Field(
@@ -187,13 +210,16 @@ class BuildCreativeResponse2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
     expires_at: Annotated[
         AwareDatetime | None,
         Field(
             description='ISO 8601 timestamp when the earliest generated asset URL expires across all manifests. Re-build after this time to get fresh URLs.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     preview: Annotated[
         Preview2 | None,
         Field(
@@ -206,10 +232,31 @@ class BuildCreativeResponse2(AdCPBaseModel):
             description='When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Omitted when preview succeeded or was not requested.'
         ),
     ] = None
-    sandbox: Annotated[
-        bool | None,
-        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    pricing_option_id: Annotated[
+        str | None,
+        Field(
+            description='Which rate card pricing option was applied for this build. Represents the total cost of the entire multi-format build call. Present when the creative agent charges for its services.'
+        ),
+    ] = None
+    vendor_cost: Annotated[
+        float | None,
+        Field(
+            description='Total cost incurred for this multi-format build, denominated in currency. May be 0 for CPM-priced creatives where cost accrues at serve time.',
+            ge=0.0,
+        ),
+    ] = None
+    currency: Annotated[
+        str | None,
+        Field(description='ISO 4217 currency code for vendor_cost.', pattern='^[A-Z]{3}$'),
     ] = None
+    consumption: Annotated[
+        creative_consumption.CreativeConsumption | None,
+        Field(
+            description='Structured consumption details for this build. Informational — lets the buyer verify that vendor_cost is consistent with the rate card.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 BuildCreativeResponse = BuildCreativeResponse1 | BuildCreativeResponse2 | BuildCreativeResponse3
diff --git a/src/adcp/types/generated_poc/media_buy/create_media_buy_request.py b/src/adcp/types/generated_poc/media_buy/create_media_buy_request.py
index 292f47e07..781ebbdbb 100644
--- a/src/adcp/types/generated_poc/media_buy/create_media_buy_request.py
+++ b/src/adcp/types/generated_poc/media_buy/create_media_buy_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/create_media_buy_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -21,17 +21,44 @@
 from . import package_request
 
 
-class Authentication(AdCPBaseModel):
+class TotalBudget(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    credentials: Annotated[
+    amount: Annotated[float, Field(description='Total budget amount', ge=0.0)]
+    currency: Annotated[str, Field(description='ISO 4217 currency code')]
+
+
+class IoAcceptance(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    io_id: Annotated[
+        str, Field(description="The io_id from the proposal's insertion_order being accepted")
+    ]
+    accepted_at: Annotated[
+        AwareDatetime, Field(description='ISO 8601 timestamp when the IO was accepted')
+    ]
+    signatory: Annotated[
         str,
         Field(
-            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
-            min_length=32,
+            description='Who accepted the IO — agent identifier or human name',
+            max_length=250,
+            min_length=1,
         ),
     ]
+    signature_id: Annotated[
+        str | None,
+        Field(
+            description='Reference to the electronic signature from the signing service, when signing_url was used'
+        ),
+    ] = None
+
+
+class Authentication(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
     schemes: Annotated[
         list[auth_scheme.AuthenticationScheme],
         Field(
@@ -40,11 +67,13 @@ class Authentication(AdCPBaseModel):
             min_length=1,
         ),
     ]
-
-
-class BatchFrequency(Enum):
-    hourly = 'hourly'
-    daily = 'daily'
+    credentials: Annotated[
+        str,
+        Field(
+            description='Credentials for authentication. For Bearer: token sent in Authorization header. For HMAC-SHA256: shared secret used to generate signature. Minimum 32 characters. Exchanged out-of-band during onboarding.',
+            min_length=32,
+        ),
+    ]
 
 
 class DeliveryMode(Enum):
@@ -52,26 +81,39 @@ class DeliveryMode(Enum):
     batched = 'batched'
 
 
+class BatchFrequency(Enum):
+    hourly = 'hourly'
+    daily = 'daily'
+
+
 class ArtifactWebhook(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for artifact delivery')]
+    token: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
+            min_length=16,
+        ),
+    ] = None
     authentication: Annotated[
         Authentication,
         Field(description='Authentication configuration for webhook delivery (A2A-compatible)'),
     ]
-    batch_frequency: Annotated[
-        BatchFrequency | None,
-        Field(
-            description="For batched delivery, how often to push artifacts. Required when delivery_mode is 'batched'."
-        ),
-    ] = None
     delivery_mode: Annotated[
         DeliveryMode,
         Field(
             description="How artifacts are delivered. 'realtime' pushes artifacts as impressions occur. 'batched' aggregates artifacts and pushes periodically (see batch_frequency)."
         ),
     ]
+    batch_frequency: Annotated[
+        BatchFrequency | None,
+        Field(
+            description="For batched delivery, how often to push artifacts. Required when delivery_mode is 'batched'."
+        ),
+    ] = None
     sampling_rate: Annotated[
         float | None,
         Field(
@@ -80,70 +122,58 @@ class ArtifactWebhook(AdCPBaseModel):
             le=1.0,
         ),
     ] = None
-    token: Annotated[
-        str | None,
-        Field(
-            description='Optional client-provided token for webhook validation. Echoed back in webhook payload to validate request authenticity.',
-            min_length=16,
-        ),
-    ] = None
-    url: Annotated[AnyUrl, Field(description='Webhook endpoint URL for artifact delivery')]
 
 
-class IoAcceptance(AdCPBaseModel):
+class CreateMediaBuyRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    accepted_at: Annotated[
-        AwareDatetime, Field(description='ISO 8601 timestamp when the IO was accepted')
-    ]
-    io_id: Annotated[
-        str, Field(description="The io_id from the proposal's insertion_order being accepted")
-    ]
-    signatory: Annotated[
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
         str,
         Field(
-            description='Who accepted the IO — agent identifier or human name',
-            max_length=250,
-            min_length=1,
+            description='Client-generated unique key for this request. If a request with the same idempotency_key and account has already been processed, the seller returns the existing media buy rather than creating a duplicate. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
     ]
-    signature_id: Annotated[
+    plan_id: Annotated[
         str | None,
         Field(
-            description='Reference to the electronic signature from the signing service, when signing_url was used'
+            description='Campaign governance plan identifier. Required when the account has governance_agents. The seller includes this in the committed check_governance request so the governance agent can validate against the correct plan.'
         ),
     ] = None
-
-
-class TotalBudget(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    amount: Annotated[float, Field(description='Total budget amount', ge=0.0)]
-    currency: Annotated[str, Field(description='ISO 4217 currency code')]
-
-
-class CreateMediaBuyRequest(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
     account: Annotated[
         account_ref.AccountReference,
         Field(
             description='Account to bill for this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts.'
         ),
     ]
-    advertiser_industry: Annotated[
-        advertiser_industry_1.AdvertiserIndustry | None,
+    proposal_id: Annotated[
+        str | None,
         Field(
-            description="Industry classification for this specific campaign. A brand may operate across multiple industries (brand.json industries field), but each media buy targets one. For example, a consumer health company running a wellness campaign sends 'healthcare.wellness', not 'cpg'. Sellers map this to platform-native codes (e.g., Spotify ADV categories, LinkedIn industry IDs). When omitted, sellers may infer from the brand manifest's industries field."
+            description="ID of a proposal from get_products to execute. When provided with total_budget, the publisher converts the proposal's allocation percentages into packages automatically. Alternative to providing packages array."
         ),
     ] = None
-    artifact_webhook: Annotated[
-        ArtifactWebhook | None,
+    total_budget: Annotated[
+        TotalBudget | None,
         Field(
-            description='Optional webhook configuration for content artifact delivery. Used by governance agents to validate content adjacency. Seller pushes artifacts to this endpoint; orchestrator forwards to governance agent for validation.'
+            description="Total budget for the media buy when executing a proposal. The publisher applies the proposal's allocation percentages to this amount to derive package budgets."
+        ),
+    ] = None
+    packages: Annotated[
+        list[package_request.PackageRequest] | None,
+        Field(
+            description="Array of package configurations. Required when not using proposal_id. When executing a proposal, this can be omitted and packages will be derived from the proposal's allocations.",
+            min_length=1,
         ),
     ] = None
     brand: Annotated[
@@ -152,17 +182,10 @@ class CreateMediaBuyRequest(AdCPBaseModel):
             description='Brand reference for this media buy. Resolved to full brand identity at execution time from brand.json or the registry.'
         ),
     ]
-    context: context_1.ContextObject | None = None
-    end_time: Annotated[
-        AwareDatetime, Field(description='Campaign end date/time in ISO 8601 format')
-    ]
-    ext: ext_1.ExtensionObject | None = None
-    idempotency_key: Annotated[
-        str | None,
+    advertiser_industry: Annotated[
+        advertiser_industry_1.AdvertiserIndustry | None,
         Field(
-            description='Client-generated unique key for this request. If a request with the same idempotency_key and account has already been processed, the seller returns the existing media buy rather than creating a duplicate. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
+            description="Industry classification for this specific campaign. A brand may operate across multiple industries (brand.json industries field), but each media buy targets one. For example, a consumer health company running a wellness campaign sends 'healthcare.wellness', not 'cpg'. Sellers map this to platform-native codes (e.g., Spotify ADV categories, LinkedIn industry IDs). When omitted, sellers may infer from the brand manifest's industries field."
         ),
     ] = None
     invoice_recipient: Annotated[
@@ -177,26 +200,18 @@ class CreateMediaBuyRequest(AdCPBaseModel):
             description="Acceptance of an insertion order from a committed proposal. Required when the proposal's insertion_order has requires_signature: true. References the io_id from the proposal's insertion_order."
         ),
     ] = None
-    packages: Annotated[
-        list[package_request.PackageRequest] | None,
-        Field(
-            description="Array of package configurations. Required when not using proposal_id. When executing a proposal, this can be omitted and packages will be derived from the proposal's allocations.",
-            min_length=1,
-        ),
-    ] = None
-    plan_id: Annotated[
-        str | None,
-        Field(
-            description='Campaign governance plan identifier. Required when the account has governance_agents. The seller includes this in the committed check_governance request so the governance agent can validate against the correct plan.'
-        ),
-    ] = None
     po_number: Annotated[str | None, Field(description='Purchase order number for tracking')] = None
-    proposal_id: Annotated[
+    agency_estimate_number: Annotated[
         str | None,
         Field(
-            description="ID of a proposal from get_products to execute. When provided with total_budget, the publisher converts the proposal's allocation percentages into packages automatically. Alternative to providing packages array."
+            description="Agency estimate or authorization number. Primary financial reference for broadcast buys — links the order to the agency's media plan and billing system. Travels with the order and Ad-IDs through the transaction lifecycle.",
+            max_length=100,
         ),
     ] = None
+    start_time: start_timing.StartTiming
+    end_time: Annotated[
+        AwareDatetime, Field(description='Campaign end date/time in ISO 8601 format')
+    ]
     push_notification_config: Annotated[
         push_notification_config_1.PushNotificationConfig | None,
         Field(
@@ -207,10 +222,11 @@ class CreateMediaBuyRequest(AdCPBaseModel):
         reporting_webhook_1.ReportingWebhook | None,
         Field(description='Optional webhook configuration for automated reporting delivery'),
     ] = None
-    start_time: start_timing.StartTiming
-    total_budget: Annotated[
-        TotalBudget | None,
+    artifact_webhook: Annotated[
+        ArtifactWebhook | None,
         Field(
-            description="Total budget for the media buy when executing a proposal. The publisher applies the proposal's allocation percentages to this amount to derive package budgets."
+            description='Optional webhook configuration for content artifact delivery. Used by governance agents to validate content adjacency. Seller pushes artifacts to this endpoint; orchestrator forwards to governance agent for validation.'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/create_media_buy_response.py b/src/adcp/types/generated_poc/media_buy/create_media_buy_response.py
index 242a6ec31..9142cba31 100644
--- a/src/adcp/types/generated_poc/media_buy/create_media_buy_response.py
+++ b/src/adcp/types/generated_poc/media_buy/create_media_buy_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/create_media_buy_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -35,11 +35,11 @@ class CreateMediaBuyResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(description='Array of errors explaining why the operation failed', min_length=1),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -47,32 +47,49 @@ class CreateMediaBuyResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    media_buy_id: Annotated[
+        str, Field(description="Seller's unique identifier for the created media buy")
+    ]
     account: Annotated[
         account_1.Account | None,
         Field(
             description='Account billed for this media buy. Includes advertiser, billing proxy (if any), and rate card applied.'
         ),
     ] = None
+    invoice_recipient: Annotated[
+        business_entity.BusinessEntity | None,
+        Field(
+            description='Per-buy invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).'
+        ),
+    ] = None
+    status: Annotated[
+        media_buy_status.MediaBuyStatus | None,
+        Field(
+            description="Initial media buy status. Either 'pending_creatives' (awaiting creative assets), 'pending_start' (ready to serve, waiting for flight date), or 'active' (immediate activation)."
+        ),
+    ] = None
     confirmed_at: Annotated[
         AwareDatetime | None,
         Field(
             description='ISO 8601 timestamp when this media buy was confirmed by the seller. A successful create_media_buy response constitutes order confirmation.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     creative_deadline: Annotated[
         AwareDatetime | None, Field(description='ISO 8601 timestamp for creative upload deadline')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    invoice_recipient: Annotated[
-        business_entity.BusinessEntity | None,
+    revision: Annotated[
+        int | None,
         Field(
-            description='Per-buy invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).'
+            description='Initial revision number for this media buy. Use in subsequent update_media_buy requests for optimistic concurrency.',
+            ge=1,
+        ),
+    ] = None
+    valid_actions: Annotated[
+        list[ValidAction] | None,
+        Field(
+            description='Actions the buyer can perform on this media buy after creation. Saves a round-trip to get_media_buys.'
         ),
     ] = None
-    media_buy_id: Annotated[
-        str, Field(description="Seller's unique identifier for the created media buy")
-    ]
     packages: Annotated[
         list[package.Package],
         Field(description='Array of created packages with complete state information'),
@@ -83,29 +100,12 @@ class CreateMediaBuyResponse1(AdCPBaseModel):
             description="The seller's interpreted delivery parameters. Describes what the seller will actually run -- geo, channels, flight dates, frequency caps, and budget. Present when the account has governance_agents or when the seller chooses to provide delivery transparency."
         ),
     ] = None
-    revision: Annotated[
-        int | None,
-        Field(
-            description='Initial revision number for this media buy. Use in subsequent update_media_buy requests for optimistic concurrency.',
-            ge=1,
-        ),
-    ] = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
-    status: Annotated[
-        media_buy_status.MediaBuyStatus | None,
-        Field(
-            description="Initial media buy status. Either 'active' (immediate activation) or 'pending_activation' (awaiting platform setup)."
-        ),
-    ] = None
-    valid_actions: Annotated[
-        list[ValidAction] | None,
-        Field(
-            description='Actions the buyer can perform on this media buy after creation. Saves a round-trip to get_media_buys.'
-        ),
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 CreateMediaBuyResponse = CreateMediaBuyResponse1 | CreateMediaBuyResponse2
diff --git a/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py b/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py
index c083a0d7f..4c2c87d1a 100644
--- a/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py
+++ b/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_media_buy_delivery_request.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -22,26 +22,50 @@ class AttributionWindow(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    model: Annotated[
-        attribution_model.AttributionModel | None,
-        Field(
-            description='Attribution model to use. When omitted, the seller applies their default model.'
-        ),
-    ] = None
     post_click: Annotated[
         duration.Duration | None, Field(description='Post-click attribution window to apply.')
     ] = None
     post_view: Annotated[
         duration.Duration | None, Field(description='Post-view attribution window to apply.')
     ] = None
+    model: Annotated[
+        attribution_model.AttributionModel | None,
+        Field(
+            description='Attribution model to use. When omitted, the seller applies their default model.'
+        ),
+    ] = None
 
 
-class Audience(AdCPBaseModel):
+class StatusFilter(RootModel[list[media_buy_status.MediaBuyStatus]]):
+    root: Annotated[
+        list[media_buy_status.MediaBuyStatus],
+        Field(
+            description='Filter by status. Can be a single status or array of statuses',
+            min_length=1,
+        ),
+    ]
+
+
+class Geo(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    geo_level: Annotated[
+        geo_level_1.GeographicTargetingLevel,
+        Field(description='Geographic granularity level for the breakdown'),
+    ]
+    system: Annotated[
+        metro_system.MetroAreaSystem | postal_system.PostalCodeSystem | None,
+        Field(
+            description="Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Required when geo_level is 'metro' or 'postal_area'."
+        ),
+    ] = None
     limit: Annotated[
-        int | None, Field(description='Maximum number of entries to return. Defaults to 25.', ge=1)
+        int | None,
+        Field(
+            description='Maximum number of geo entries to return. Defaults to 25. When truncated, by_geo_truncated is true in the response.',
+            ge=1,
+        ),
     ] = 25
     sort_by: Annotated[
         sort_metric.SortMetric | None,
@@ -51,7 +75,7 @@ class Audience(AdCPBaseModel):
     ] = sort_metric.SortMetric.spend
 
 
-class DevicePlatform(AdCPBaseModel):
+class DeviceType(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
@@ -70,23 +94,16 @@ class DevicePlatform(AdCPBaseModel):
     ] = sort_metric.SortMetric.spend
 
 
-DeviceType = DevicePlatform
+class DevicePlatform(DeviceType):
+    pass
 
 
-class Geo(AdCPBaseModel):
+class Audience(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    geo_level: Annotated[
-        geo_level_1.GeographicTargetingLevel,
-        Field(description='Geographic granularity level for the breakdown'),
-    ]
     limit: Annotated[
-        int | None,
-        Field(
-            description='Maximum number of geo entries to return. Defaults to 25. When truncated, by_geo_truncated is true in the response.',
-            ge=1,
-        ),
+        int | None, Field(description='Maximum number of entries to return. Defaults to 25.', ge=1)
     ] = 25
     sort_by: Annotated[
         sort_metric.SortMetric | None,
@@ -94,66 +111,67 @@ class Geo(AdCPBaseModel):
             description="Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
         ),
     ] = sort_metric.SortMetric.spend
-    system: Annotated[
-        metro_system.MetroAreaSystem | postal_system.PostalCodeSystem | None,
-        Field(
-            description="Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Required when geo_level is 'metro' or 'postal_area'."
-        ),
-    ] = None
 
 
-Placement = Audience
+class Placement(Audience):
+    pass
 
 
 class ReportingDimensions(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    audience: Annotated[
-        Audience | None, Field(description='Request audience segment breakdown.')
-    ] = None
-    device_platform: Annotated[
-        DevicePlatform | None, Field(description='Request device platform breakdown.')
-    ] = None
-    device_type: Annotated[
-        DeviceType | None, Field(description='Request device type breakdown.')
-    ] = None
     geo: Annotated[
         Geo | None,
         Field(
             description='Request geographic breakdown. Check reporting_capabilities.supports_geo_breakdown for available levels and systems.'
         ),
     ] = None
+    device_type: Annotated[
+        DeviceType | None, Field(description='Request device type breakdown.')
+    ] = None
+    device_platform: Annotated[
+        DevicePlatform | None, Field(description='Request device platform breakdown.')
+    ] = None
+    audience: Annotated[
+        Audience | None, Field(description='Request audience segment breakdown.')
+    ] = None
     placement: Annotated[Placement | None, Field(description='Request placement breakdown.')] = None
 
 
-class StatusFilter(RootModel[list[media_buy_status.MediaBuyStatus]]):
-    root: Annotated[
-        list[media_buy_status.MediaBuyStatus],
-        Field(
-            description='Filter by status. Can be a single status or array of statuses',
-            min_length=1,
-        ),
-    ]
-
-
 class GetMediaBuyDeliveryRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     account: Annotated[
         account_ref.AccountReference | None,
         Field(
             description='Filter delivery data to a specific account. When omitted, returns data across all accessible accounts.'
         ),
     ] = None
-    attribution_window: Annotated[
-        AttributionWindow | None,
+    media_buy_ids: Annotated[
+        list[str] | None,
+        Field(description='Array of media buy IDs to get delivery data for', min_length=1),
+    ] = None
+    status_filter: Annotated[
+        media_buy_status.MediaBuyStatus | StatusFilter | None,
+        Field(description='Filter by status. Can be a single status or array of statuses'),
+    ] = None
+    start_date: Annotated[
+        str | None,
         Field(
-            description='Attribution window to apply for conversion metrics. When provided, the seller returns conversion data using the requested lookback windows instead of their platform default. The seller echoes the applied window in the response. Sellers that do not support configurable windows ignore this field and return their default. Check get_adcp_capabilities conversion_tracking.attribution_windows for available options.'
+            description="Start date for reporting period (YYYY-MM-DD). When omitted along with end_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'.",
+            pattern='^\\d{4}-\\d{2}-\\d{2}$',
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     end_date: Annotated[
         str | None,
         Field(
@@ -161,16 +179,17 @@ class GetMediaBuyDeliveryRequest(AdCPBaseModel):
             pattern='^\\d{4}-\\d{2}-\\d{2}$',
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     include_package_daily_breakdown: Annotated[
         bool | None,
         Field(
             description='When true, include daily_breakdown arrays within each package in by_package. Useful for per-package pacing analysis and line-item monitoring. Omit or set false to reduce response size — package daily data can be large for multi-package buys over long flights.'
         ),
     ] = False
-    media_buy_ids: Annotated[
-        list[str] | None,
-        Field(description='Array of media buy IDs to get delivery data for', min_length=1),
+    attribution_window: Annotated[
+        AttributionWindow | None,
+        Field(
+            description='Attribution window to apply for conversion metrics. When provided, the seller returns conversion data using the requested lookback windows instead of their platform default. The seller echoes the applied window in the response. Sellers that do not support configurable windows ignore this field and return their default. Check get_adcp_capabilities conversion_tracking.attribution_windows for available options.'
+        ),
     ] = None
     reporting_dimensions: Annotated[
         ReportingDimensions | None,
@@ -178,14 +197,5 @@ class GetMediaBuyDeliveryRequest(AdCPBaseModel):
             description='Request dimensional breakdowns in delivery reporting. Each key enables a specific breakdown dimension within by_package — include as an empty object (e.g., "device_type": {}) to activate with defaults. Omit entirely for no breakdowns (backward compatible). Unsupported dimensions are silently omitted from the response. Note: keyword, catalog_item, and creative breakdowns are returned automatically when the seller supports them and are not controlled by this object.'
         ),
     ] = None
-    start_date: Annotated[
-        str | None,
-        Field(
-            description="Start date for reporting period (YYYY-MM-DD). When omitted along with end_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'.",
-            pattern='^\\d{4}-\\d{2}-\\d{2}$',
-        ),
-    ] = None
-    status_filter: Annotated[
-        media_buy_status.MediaBuyStatus | StatusFilter | None,
-        Field(description='Filter by status. Can be a single status or array of statuses'),
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_response.py b/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_response.py
index bca5f6b86..f8fc9be58 100644
--- a/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_response.py
+++ b/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_media_buy_delivery_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,6 +24,49 @@
 from ..enums import reach_unit as reach_unit_1
 
 
+class NotificationType(Enum):
+    scheduled = 'scheduled'
+    final = 'final'
+    delayed = 'delayed'
+    adjusted = 'adjusted'
+    window_update = 'window_update'
+
+
+class ReportingPeriod(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    start: Annotated[
+        AwareDatetime,
+        Field(description='ISO 8601 start timestamp in UTC (e.g., 2024-02-05T00:00:00Z)'),
+    ]
+    end: Annotated[
+        AwareDatetime,
+        Field(description='ISO 8601 end timestamp in UTC (e.g., 2024-02-05T23:59:59Z)'),
+    ]
+
+
+class Status(Enum):
+    pending_creatives = 'pending_creatives'
+    pending_start = 'pending_start'
+    pending = 'pending'
+    active = 'active'
+    paused = 'paused'
+    completed = 'completed'
+    rejected = 'rejected'
+    canceled = 'canceled'
+    failed = 'failed'
+    reporting_delayed = 'reporting_delayed'
+
+
+class DeliveryStatus(Enum):
+    delivering = 'delivering'
+    completed = 'completed'
+    budget_exhausted = 'budget_exhausted'
+    flight_ended = 'flight_ended'
+    goal_met = 'goal_met'
+
+
 class MatchType(Enum):
     broad = 'broad'
     phrase = 'phrase'
@@ -34,14 +77,19 @@ class DailyBreakdownItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    date: Annotated[str, Field(description='Date (YYYY-MM-DD)', pattern='^\\d{4}-\\d{2}-\\d{2}$')]
+    impressions: Annotated[float, Field(description='Daily impressions for this package', ge=0.0)]
+    spend: Annotated[float, Field(description='Daily spend for this package', ge=0.0)]
+    conversions: Annotated[
+        float | None, Field(description='Daily conversions for this package', ge=0.0)
+    ] = None
     conversion_value: Annotated[
         float | None, Field(description='Daily conversion value for this package', ge=0.0)
     ] = None
-    conversions: Annotated[
-        float | None, Field(description='Daily conversions for this package', ge=0.0)
+    roas: Annotated[
+        float | None,
+        Field(description='Daily return on ad spend (conversion_value / spend)', ge=0.0),
     ] = None
-    date: Annotated[str, Field(description='Date (YYYY-MM-DD)', pattern='^\\d{4}-\\d{2}-\\d{2}$')]
-    impressions: Annotated[float, Field(description='Daily impressions for this package', ge=0.0)]
     new_to_brand_rate: Annotated[
         float | None,
         Field(
@@ -50,31 +98,23 @@ class DailyBreakdownItem(AdCPBaseModel):
             le=1.0,
         ),
     ] = None
-    roas: Annotated[
-        float | None,
-        Field(description='Daily return on ad spend (conversion_value / spend)', ge=0.0),
-    ] = None
-    spend: Annotated[float, Field(description='Daily spend for this package', ge=0.0)]
-
-
-class DeliveryStatus(Enum):
-    delivering = 'delivering'
-    completed = 'completed'
-    budget_exhausted = 'budget_exhausted'
-    flight_ended = 'flight_ended'
-    goal_met = 'goal_met'
 
 
 class DailyBreakdownItem1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    date: Annotated[str, Field(description='Date (YYYY-MM-DD)', pattern='^\\d{4}-\\d{2}-\\d{2}$')]
+    impressions: Annotated[float, Field(description='Daily impressions', ge=0.0)]
+    spend: Annotated[float, Field(description='Daily spend', ge=0.0)]
+    conversions: Annotated[float | None, Field(description='Daily conversions', ge=0.0)] = None
     conversion_value: Annotated[
         float | None, Field(description='Daily conversion value', ge=0.0)
     ] = None
-    conversions: Annotated[float | None, Field(description='Daily conversions', ge=0.0)] = None
-    date: Annotated[str, Field(description='Date (YYYY-MM-DD)', pattern='^\\d{4}-\\d{2}-\\d{2}$')]
-    impressions: Annotated[float, Field(description='Daily impressions', ge=0.0)]
+    roas: Annotated[
+        float | None,
+        Field(description='Daily return on ad spend (conversion_value / spend)', ge=0.0),
+    ] = None
     new_to_brand_rate: Annotated[
         float | None,
         Field(
@@ -83,50 +123,16 @@ class DailyBreakdownItem1(AdCPBaseModel):
             le=1.0,
         ),
     ] = None
-    roas: Annotated[
-        float | None,
-        Field(description='Daily return on ad spend (conversion_value / spend)', ge=0.0),
-    ] = None
-    spend: Annotated[float, Field(description='Daily spend', ge=0.0)]
-
-
-class Status(Enum):
-    pending_activation = 'pending_activation'
-    pending = 'pending'
-    active = 'active'
-    paused = 'paused'
-    completed = 'completed'
-    rejected = 'rejected'
-    canceled = 'canceled'
-    failed = 'failed'
-    reporting_delayed = 'reporting_delayed'
-
-
-class NotificationType(Enum):
-    scheduled = 'scheduled'
-    final = 'final'
-    delayed = 'delayed'
-    adjusted = 'adjusted'
-
-
-class ReportingPeriod(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    end: Annotated[
-        AwareDatetime,
-        Field(description='ISO 8601 end timestamp in UTC (e.g., 2024-02-05T23:59:59Z)'),
-    ]
-    start: Annotated[
-        AwareDatetime,
-        Field(description='ISO 8601 start timestamp in UTC (e.g., 2024-02-05T00:00:00Z)'),
-    ]
 
 
 class AggregatedTotals(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    impressions: Annotated[
+        float, Field(description='Total impressions delivered across all media buys', ge=0.0)
+    ]
+    spend: Annotated[float, Field(description='Total amount spent across all media buys', ge=0.0)]
     clicks: Annotated[
         float | None,
         Field(description='Total clicks across all media buys (if applicable)', ge=0.0),
@@ -138,46 +144,43 @@ class AggregatedTotals(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    completion_rate: Annotated[
+    views: Annotated[
+        float | None, Field(description='Total views across all media buys (if applicable)', ge=0.0)
+    ] = None
+    conversions: Annotated[
         float | None,
-        Field(
-            description='Aggregate completion rate across all media buys (weighted by impressions, not a simple average of per-buy rates)',
-            ge=0.0,
-            le=1.0,
-        ),
+        Field(description='Total conversions across all media buys (if applicable)', ge=0.0),
     ] = None
     conversion_value: Annotated[
         float | None,
         Field(description='Total conversion value across all media buys (if applicable)', ge=0.0),
     ] = None
-    conversions: Annotated[
+    roas: Annotated[
         float | None,
-        Field(description='Total conversions across all media buys (if applicable)', ge=0.0),
+        Field(
+            description='Aggregate return on ad spend across all media buys (total conversion_value / total spend)',
+            ge=0.0,
+        ),
     ] = None
-    cost_per_acquisition: Annotated[
+    new_to_brand_rate: Annotated[
         float | None,
         Field(
-            description='Aggregate cost per conversion across all media buys (total spend / total conversions)',
+            description='Fraction of total conversions across all media buys from first-time brand buyers (weighted by conversion volume, not a simple average of per-buy rates)',
             ge=0.0,
+            le=1.0,
         ),
     ] = None
-    frequency: Annotated[
+    cost_per_acquisition: Annotated[
         float | None,
         Field(
-            description='Average frequency per reach unit across all media buys (impressions / reach when cross-buy deduplication is available). Only present when reach is present.',
+            description='Aggregate cost per conversion across all media buys (total spend / total conversions)',
             ge=0.0,
         ),
     ] = None
-    impressions: Annotated[
-        float, Field(description='Total impressions delivered across all media buys', ge=0.0)
-    ]
-    media_buy_count: Annotated[
-        int, Field(description='Number of media buys included in the response', ge=0)
-    ]
-    new_to_brand_rate: Annotated[
+    completion_rate: Annotated[
         float | None,
         Field(
-            description='Fraction of total conversions across all media buys from first-time brand buyers (weighted by conversion volume, not a simple average of per-buy rates)',
+            description='Aggregate completion rate across all media buys (weighted by impressions, not a simple average of per-buy rates)',
             ge=0.0,
             le=1.0,
         ),
@@ -195,36 +198,26 @@ class AggregatedTotals(AdCPBaseModel):
             description='Unit of measurement for reach. Only present when all aggregated media buys use the same reach_unit.'
         ),
     ] = None
-    roas: Annotated[
+    frequency: Annotated[
         float | None,
         Field(
-            description='Aggregate return on ad spend across all media buys (total conversion_value / total spend)',
+            description='Average frequency per reach unit across all media buys (impressions / reach when cross-buy deduplication is available). Only present when reach is present.',
             ge=0.0,
         ),
     ] = None
-    spend: Annotated[float, Field(description='Total amount spent across all media buys', ge=0.0)]
-    views: Annotated[
-        float | None, Field(description='Total views across all media buys (if applicable)', ge=0.0)
-    ] = None
+    media_buy_count: Annotated[
+        int, Field(description='Number of media buys included in the response', ge=0)
+    ]
 
 
-class ByAudienceItem(DeliveryMetrics):
-    audience_id: Annotated[
-        str,
+class Totals(DeliveryMetrics):
+    effective_rate: Annotated[
+        float | None,
         Field(
-            description="Audience segment identifier. For 'synced' source, matches audience_id from sync_audiences. For other sources, seller-defined."
+            description="Effective rate paid per unit based on pricing_model (e.g., actual CPM for 'cpm', actual cost per completed view for 'cpcv', actual cost per point for 'cpp')",
+            ge=0.0,
         ),
-    ]
-    audience_name: Annotated[
-        str | None, Field(description='Human-readable audience segment name')
     ] = None
-    audience_source: Annotated[
-        audience_source_1.AudienceSource,
-        Field(
-            description='Origin of the audience segment (synced, platform, third_party, lookalike, retargeting, unknown)'
-        ),
-    ]
-    impressions: Any
     spend: Any
 
 
@@ -256,53 +249,73 @@ class ByCreativeItem(DeliveryMetrics):
     spend: Any
 
 
-class ByDevicePlatformItem(DeliveryMetrics):
-    device_platform: Annotated[
-        device_platform_1.DevicePlatform, Field(description='Operating system platform')
-    ]
-    impressions: Any
-    spend: Any
-
-
-class ByDeviceTypeItem(DeliveryMetrics):
-    device_type: Annotated[
-        device_type_1.DeviceType,
-        Field(description='Device form factor (desktop, mobile, tablet, ctv, dooh, unknown)'),
-    ]
+class ByKeywordItem(DeliveryMetrics):
+    keyword: Annotated[str, Field(description='The targeted keyword')]
+    match_type: Annotated[MatchType, Field(description='Match type for this keyword')]
     impressions: Any
     spend: Any
 
 
 class ByGeoItem(DeliveryMetrics):
-    geo_code: Annotated[
-        str,
-        Field(
-            description="Geographic code within the level and system. Country: ISO 3166-1 alpha-2 ('US'). Region: ISO 3166-2 with country prefix ('US-CA'). Metro/postal: system-specific code ('501', '10001')."
-        ),
-    ]
     geo_level: Annotated[
         geo_level_1.GeographicTargetingLevel,
         Field(description='Geographic level of this entry (country, region, metro, postal_area)'),
     ]
-    geo_name: Annotated[
+    system: Annotated[
         str | None,
         Field(
-            description="Human-readable geographic name (e.g., 'United States', 'California', 'New York DMA')"
+            description="Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Present when geo_level is 'metro' or 'postal_area'."
         ),
     ] = None
-    system: Annotated[
+    geo_code: Annotated[
+        str,
+        Field(
+            description="Geographic code within the level and system. Country: ISO 3166-1 alpha-2 ('US'). Region: ISO 3166-2 with country prefix ('US-CA'). Metro/postal: system-specific code ('501', '10001')."
+        ),
+    ]
+    geo_name: Annotated[
         str | None,
         Field(
-            description="Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Present when geo_level is 'metro' or 'postal_area'."
+            description="Human-readable geographic name (e.g., 'United States', 'California', 'New York DMA')"
         ),
     ] = None
     impressions: Any
     spend: Any
 
 
-class ByKeywordItem(DeliveryMetrics):
-    keyword: Annotated[str, Field(description='The targeted keyword')]
-    match_type: Annotated[MatchType, Field(description='Match type for this keyword')]
+class ByDeviceTypeItem(DeliveryMetrics):
+    device_type: Annotated[
+        device_type_1.DeviceType,
+        Field(description='Device form factor (desktop, mobile, tablet, ctv, dooh, unknown)'),
+    ]
+    impressions: Any
+    spend: Any
+
+
+class ByDevicePlatformItem(DeliveryMetrics):
+    device_platform: Annotated[
+        device_platform_1.DevicePlatform, Field(description='Operating system platform')
+    ]
+    impressions: Any
+    spend: Any
+
+
+class ByAudienceItem(DeliveryMetrics):
+    audience_id: Annotated[
+        str,
+        Field(
+            description="Audience segment identifier. For 'synced' source, matches audience_id from sync_audiences. For other sources, seller-defined."
+        ),
+    ]
+    audience_source: Annotated[
+        audience_source_1.AudienceSource,
+        Field(
+            description='Origin of the audience segment (synced, platform, third_party, lookalike, retargeting, unknown)'
+        ),
+    ]
+    audience_name: Annotated[
+        str | None, Field(description='Human-readable audience segment name')
+    ] = None
     impressions: Any
     spend: Any
 
@@ -317,16 +330,60 @@ class ByPlacementItem(DeliveryMetrics):
 
 
 class ByPackageItem(DeliveryMetrics):
-    by_audience: Annotated[
-        list[ByAudienceItem] | None,
+    package_id: Annotated[str, Field(description="Seller's package identifier")]
+    pacing_index: Annotated[
+        float | None,
+        Field(description='Delivery pace (1.0 = on track, <1.0 = behind, >1.0 = ahead)', ge=0.0),
+    ] = None
+    pricing_model: Annotated[
+        pricing_model_1.PricingModel,
         Field(
-            description="Delivery by audience segment within this package. Available when the buyer requests audience breakdown via reporting_dimensions and the seller supports it. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational."
+            description='The pricing model used for this package (e.g., cpm, cpcv, cpp). Indicates how the package is billed and which metrics are most relevant for optimization.'
+        ),
+    ]
+    rate: Annotated[
+        float,
+        Field(
+            description='The pricing rate for this package in the specified currency. For fixed-rate pricing, this is the agreed rate (e.g., CPM rate of 12.50 means $12.50 per 1,000 impressions). For auction-based pricing, this represents the effective rate based on actual delivery.',
+            ge=0.0,
+        ),
+    ]
+    currency: Annotated[
+        str,
+        Field(
+            description="ISO 4217 currency code (e.g., USD, EUR, GBP) for this package's pricing. Indicates the currency in which the rate and spend values are denominated. Different packages can use different currencies when supported by the publisher.",
+            pattern='^[A-Z]{3}$',
+        ),
+    ]
+    delivery_status: Annotated[
+        DeliveryStatus | None,
+        Field(
+            description='System-reported operational state of this package. Reflects actual delivery state independent of buyer pause control.'
         ),
     ] = None
-    by_audience_truncated: Annotated[
+    paused: Annotated[
+        bool | None, Field(description='Whether this package is currently paused by the buyer')
+    ] = None
+    is_final: Annotated[
         bool | None,
         Field(
-            description='Whether by_audience was truncated. Sellers MUST return this flag whenever by_audience is present (false means the list is complete).'
+            description='Whether this delivery data is final for the reporting period. When false, the data may be updated as measurement matures (e.g., broadcast C7 window accumulating DVR playback) or as processing completes (e.g., IVT filtering, deduplication). When true, the seller considers this data closed — no further updates for this period. Absent means the seller does not distinguish provisional from final data.'
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement window this data represents, referencing a window_id from the product's reporting_capabilities.measurement_windows. For broadcast: 'live', 'c3', 'c7'. When absent, the data is not windowed (standard digital reporting). When present with is_final: false, a later report for the same period will provide a wider window or more complete data.",
+            examples=['live', 'c3', 'c7'],
+            max_length=50,
+        ),
+    ] = None
+    supersedes_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement window this data replaces. Present on window_update notifications to indicate progression (e.g., 'live' when reporting C3 data that supersedes live-only numbers). Absent on the first report for a period. Buyers should replace stored data for the superseded window with this report's data.",
+            examples=['live', 'c3'],
+            max_length=50,
         ),
     ] = None
     by_catalog_item: Annotated[
@@ -341,16 +398,22 @@ class ByPackageItem(DeliveryMetrics):
             description='Metrics broken down by creative within this package. Available when the seller supports creative-level reporting.'
         ),
     ] = None
-    by_device_platform: Annotated[
-        list[ByDevicePlatformItem] | None,
+    by_keyword: Annotated[
+        list[ByKeywordItem] | None,
         Field(
-            description='Delivery by operating system within this package. Available when the buyer requests device_platform breakdown via reporting_dimensions and the seller supports it. Useful for CTV campaigns where tvOS vs Roku OS vs Fire OS matters.'
+            description='Metrics broken down by keyword within this package. One row per (keyword, match_type) pair — the same keyword with different match types appears as separate rows. Keyword-grain only: rows reflect aggregate performance of each targeted keyword, not individual search queries. Rows may not sum to package totals when a single impression is attributed to the triggering keyword only. Available for search and retail media packages when the seller supports keyword-level reporting.'
         ),
     ] = None
-    by_device_platform_truncated: Annotated[
+    by_geo: Annotated[
+        list[ByGeoItem] | None,
+        Field(
+            description="Delivery by geographic area within this package. Available when the buyer requests geo breakdown via reporting_dimensions and the seller supports it. Each dimension's rows are independent slices that should sum to the package total."
+        ),
+    ] = None
+    by_geo_truncated: Annotated[
         bool | None,
         Field(
-            description='Whether by_device_platform was truncated. Sellers MUST return this flag whenever by_device_platform is present (false means the list is complete).'
+            description='Whether by_geo was truncated due to the requested limit or a seller-imposed maximum. Sellers MUST return this flag whenever by_geo is present (false means the list is complete).'
         ),
     ] = None
     by_device_type: Annotated[
@@ -365,22 +428,28 @@ class ByPackageItem(DeliveryMetrics):
             description='Whether by_device_type was truncated. Sellers MUST return this flag whenever by_device_type is present (false means the list is complete).'
         ),
     ] = None
-    by_geo: Annotated[
-        list[ByGeoItem] | None,
+    by_device_platform: Annotated[
+        list[ByDevicePlatformItem] | None,
         Field(
-            description="Delivery by geographic area within this package. Available when the buyer requests geo breakdown via reporting_dimensions and the seller supports it. Each dimension's rows are independent slices that should sum to the package total."
+            description='Delivery by operating system within this package. Available when the buyer requests device_platform breakdown via reporting_dimensions and the seller supports it. Useful for CTV campaigns where tvOS vs Roku OS vs Fire OS matters.'
         ),
     ] = None
-    by_geo_truncated: Annotated[
+    by_device_platform_truncated: Annotated[
         bool | None,
         Field(
-            description='Whether by_geo was truncated due to the requested limit or a seller-imposed maximum. Sellers MUST return this flag whenever by_geo is present (false means the list is complete).'
+            description='Whether by_device_platform was truncated. Sellers MUST return this flag whenever by_device_platform is present (false means the list is complete).'
         ),
     ] = None
-    by_keyword: Annotated[
-        list[ByKeywordItem] | None,
+    by_audience: Annotated[
+        list[ByAudienceItem] | None,
         Field(
-            description='Metrics broken down by keyword within this package. One row per (keyword, match_type) pair — the same keyword with different match types appears as separate rows. Keyword-grain only: rows reflect aggregate performance of each targeted keyword, not individual search queries. Rows may not sum to package totals when a single impression is attributed to the triggering keyword only. Available for search and retail media packages when the seller supports keyword-level reporting.'
+            description="Delivery by audience segment within this package. Available when the buyer requests audience breakdown via reporting_dimensions and the seller supports it. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational."
+        ),
+    ] = None
+    by_audience_truncated: Annotated[
+        bool | None,
+        Field(
+            description='Whether by_audience was truncated. Sellers MUST return this flag whenever by_audience is present (false means the list is complete).'
         ),
     ] = None
     by_placement: Annotated[
@@ -395,57 +464,12 @@ class ByPackageItem(DeliveryMetrics):
             description='Whether by_placement was truncated. Sellers MUST return this flag whenever by_placement is present (false means the list is complete).'
         ),
     ] = None
-    currency: Annotated[
-        str,
-        Field(
-            description="ISO 4217 currency code (e.g., USD, EUR, GBP) for this package's pricing. Indicates the currency in which the rate and spend values are denominated. Different packages can use different currencies when supported by the publisher.",
-            pattern='^[A-Z]{3}$',
-        ),
-    ]
     daily_breakdown: Annotated[
         list[DailyBreakdownItem] | None,
         Field(
             description='Day-by-day delivery for this package. Only present when include_package_daily_breakdown is true in the request. Enables per-package pacing analysis and line-item monitoring.'
         ),
     ] = None
-    delivery_status: Annotated[
-        DeliveryStatus | None,
-        Field(
-            description='System-reported operational state of this package. Reflects actual delivery state independent of buyer pause control.'
-        ),
-    ] = None
-    pacing_index: Annotated[
-        float | None,
-        Field(description='Delivery pace (1.0 = on track, <1.0 = behind, >1.0 = ahead)', ge=0.0),
-    ] = None
-    package_id: Annotated[str, Field(description="Seller's package identifier")]
-    paused: Annotated[
-        bool | None, Field(description='Whether this package is currently paused by the buyer')
-    ] = None
-    pricing_model: Annotated[
-        pricing_model_1.PricingModel,
-        Field(
-            description='The pricing model used for this package (e.g., cpm, cpcv, cpp). Indicates how the package is billed and which metrics are most relevant for optimization.'
-        ),
-    ]
-    rate: Annotated[
-        float,
-        Field(
-            description='The pricing rate for this package in the specified currency. For fixed-rate pricing, this is the agreed rate (e.g., CPM rate of 12.50 means $12.50 per 1,000 impressions). For auction-based pricing, this represents the effective rate based on actual delivery.',
-            ge=0.0,
-        ),
-    ]
-    spend: Any
-
-
-class Totals(DeliveryMetrics):
-    effective_rate: Annotated[
-        float | None,
-        Field(
-            description="Effective rate paid per unit based on pricing_model (e.g., actual CPM for 'cpm', actual cost per completed view for 'cpcv', actual cost per point for 'cpp')",
-            ge=0.0,
-        ),
-    ] = None
     spend: Any
 
 
@@ -453,10 +477,13 @@ class MediaBuyDelivery(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    by_package: Annotated[list[ByPackageItem], Field(description='Metrics broken down by package')]
-    daily_breakdown: Annotated[
-        list[DailyBreakdownItem1] | None, Field(description='Day-by-day delivery')
-    ] = None
+    media_buy_id: Annotated[str, Field(description="Seller's media buy identifier")]
+    status: Annotated[
+        Status,
+        Field(
+            description='Current media buy status. Lifecycle states use the same taxonomy as media-buy-status (`pending_creatives`, `pending_start`, `active`, `paused`, `completed`, `rejected`, `canceled`). In webhook context, reporting_delayed indicates data temporarily unavailable. `pending` is accepted as a legacy alias for pending_start.'
+        ),
+    ]
     expected_availability: Annotated[
         AwareDatetime | None,
         Field(
@@ -469,88 +496,85 @@ class MediaBuyDelivery(AdCPBaseModel):
             description='Indicates this delivery contains updated data for a previously reported period. Buyer should replace previous period data with these totals.'
         ),
     ] = None
-    media_buy_id: Annotated[str, Field(description="Seller's media buy identifier")]
     pricing_model: Annotated[
         pricing_model_1.PricingModel | None,
         Field(description='Pricing model used for this media buy'),
     ] = None
-    status: Annotated[
-        Status,
-        Field(
-            description='Current media buy status. Lifecycle states use the same taxonomy as media-buy-status (`pending_activation`, `active`, `paused`, `completed`, `rejected`, `canceled`). In webhook context, reporting_delayed indicates data temporarily unavailable. `pending` is accepted as a legacy alias for pending_activation.'
-        ),
-    ]
     totals: Totals
+    by_package: Annotated[list[ByPackageItem], Field(description='Metrics broken down by package')]
+    daily_breakdown: Annotated[
+        list[DailyBreakdownItem1] | None, Field(description='Day-by-day delivery')
+    ] = None
 
 
 class GetMediaBuyDeliveryResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    aggregated_totals: Annotated[
-        AggregatedTotals | None,
+    notification_type: Annotated[
+        NotificationType | None,
         Field(
-            description='Combined metrics across all returned media buys. Only included in API responses (get_media_buy_delivery), not in webhook notifications.'
+            description='Type of webhook notification (only present in webhook deliveries): scheduled = regular periodic update, final = campaign completed, delayed = data not yet available, adjusted = resending period with corrected data (same window), window_update = resending period with a wider measurement window (e.g., C3 superseding live, C7 superseding C3)'
         ),
     ] = None
-    attribution_window: Annotated[
-        attribution_window_1.AttributionWindow | None,
+    partial_data: Annotated[
+        bool | None,
         Field(
-            description='Attribution methodology and lookback windows used for conversion metrics in this response. All media buys from a single seller share the same attribution methodology. Enables cross-platform comparison (e.g., Amazon 14-day click vs. Criteo 30-day click).'
+            description='Indicates if any media buys in this webhook have missing/delayed data (only present in webhook deliveries)'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
-    errors: Annotated[
-        list[error.Error] | None,
+    unavailable_count: Annotated[
+        int | None,
         Field(
-            description='Task-specific errors and warnings (e.g., missing delivery data, reporting platform issues)'
+            description='Number of media buys with reporting_delayed or failed status (only present in webhook deliveries when partial_data is true)',
+            ge=0,
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    media_buy_deliveries: Annotated[
-        list[MediaBuyDelivery],
+    sequence_number: Annotated[
+        int | None,
         Field(
-            description='Array of delivery data for media buys. When used in webhook notifications, may contain multiple media buys aggregated by publisher. When used in get_media_buy_delivery API responses, typically contains requested media buys.'
+            description='Sequential notification number (only present in webhook deliveries, starts at 1)',
+            ge=1,
         ),
-    ]
+    ] = None
     next_expected_at: Annotated[
         AwareDatetime | None,
         Field(
             description="ISO 8601 timestamp for next expected notification (only present in webhook deliveries when notification_type is not 'final')"
         ),
     ] = None
-    notification_type: Annotated[
-        NotificationType | None,
-        Field(
-            description='Type of webhook notification (only present in webhook deliveries): scheduled = regular periodic update, final = campaign completed, delayed = data not yet available, adjusted = resending period with updated data'
-        ),
-    ] = None
-    partial_data: Annotated[
-        bool | None,
-        Field(
-            description='Indicates if any media buys in this webhook have missing/delayed data (only present in webhook deliveries)'
-        ),
-    ] = None
     reporting_period: Annotated[
         ReportingPeriod,
         Field(description='Date range for the report. All periods use UTC timezone.'),
     ]
-    sandbox: Annotated[
-        bool | None,
-        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    currency: Annotated[str, Field(description='ISO 4217 currency code', pattern='^[A-Z]{3}$')]
+    attribution_window: Annotated[
+        attribution_window_1.AttributionWindow | None,
+        Field(
+            description='Attribution methodology and lookback windows used for conversion metrics in this response. All media buys from a single seller share the same attribution methodology. Enables cross-platform comparison (e.g., Amazon 14-day click vs. Criteo 30-day click).'
+        ),
     ] = None
-    sequence_number: Annotated[
-        int | None,
+    aggregated_totals: Annotated[
+        AggregatedTotals | None,
         Field(
-            description='Sequential notification number (only present in webhook deliveries, starts at 1)',
-            ge=1,
+            description='Combined metrics across all returned media buys. Only included in API responses (get_media_buy_delivery), not in webhook notifications.'
         ),
     ] = None
-    unavailable_count: Annotated[
-        int | None,
+    media_buy_deliveries: Annotated[
+        list[MediaBuyDelivery],
         Field(
-            description='Number of media buys with reporting_delayed or failed status (only present in webhook deliveries when partial_data is true)',
-            ge=0,
+            description='Array of delivery data for media buys. When used in webhook notifications, may contain multiple media buys aggregated by publisher. When used in get_media_buy_delivery API responses, typically contains requested media buys.'
+        ),
+    ]
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(
+            description='Task-specific errors and warnings (e.g., missing delivery data, reporting platform issues)'
         ),
     ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_media_buys_request.py b/src/adcp/types/generated_poc/media_buy/get_media_buys_request.py
index 4c9b9f88c..e58364560 100644
--- a/src/adcp/types/generated_poc/media_buy/get_media_buys_request.py
+++ b/src/adcp/types/generated_poc/media_buy/get_media_buys_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_media_buys_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -30,44 +30,52 @@ class GetMediaBuysRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     account: Annotated[
         account_ref.AccountReference | None,
         Field(
             description='Account to retrieve media buys for. When omitted, returns data across all accessible accounts.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    include_history: Annotated[
-        int | None,
+    media_buy_ids: Annotated[
+        list[str] | None,
         Field(
-            description='When present, include the last N revision history entries for each media buy (returns min(N, available entries)). Each entry contains revision number, timestamp, actor, and a summary of what changed. Omit or set to 0 to exclude history (default). Recommended: 5-10 for monitoring, 50+ for audit.',
-            ge=0,
-            le=1000,
+            description='Array of media buy IDs to retrieve. When omitted, returns a paginated set of accessible media buys matching status_filter.',
+            min_length=1,
         ),
-    ] = 0
+    ] = None
+    status_filter: Annotated[
+        media_buy_status.MediaBuyStatus | StatusFilter | None,
+        Field(
+            description='Filter by status. Can be a single status or array of statuses. Defaults to ["active"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied.'
+        ),
+    ] = None
     include_snapshot: Annotated[
         bool | None,
         Field(
             description='When true, include a near-real-time delivery snapshot for each package. Snapshots reflect the latest available entity-level stats from the platform (e.g., updated every ~15 minutes on GAM, ~1 hour on batch-only platforms). The staleness_seconds field on each snapshot indicates data freshness. If a snapshot cannot be returned, package.snapshot_unavailable_reason explains why. Defaults to false.'
         ),
     ] = False
-    media_buy_ids: Annotated[
-        list[str] | None,
+    include_history: Annotated[
+        int | None,
         Field(
-            description='Array of media buy IDs to retrieve. When omitted, returns a paginated set of accessible media buys matching status_filter.',
-            min_length=1,
+            description='When present, include the last N revision history entries for each media buy (returns min(N, available entries)). Each entry contains revision number, timestamp, actor, and a summary of what changed. Omit or set to 0 to exclude history (default). Recommended: 5-10 for monitoring, 50+ for audit.',
+            ge=0,
+            le=1000,
         ),
-    ] = None
+    ] = 0
     pagination: Annotated[
         pagination_request.PaginationRequest | None,
         Field(
             description='Cursor-based pagination controls. Strongly recommended when querying broad scopes (for example, all active media buys in an account).'
         ),
     ] = None
-    status_filter: Annotated[
-        media_buy_status.MediaBuyStatus | StatusFilter | None,
-        Field(
-            description='Filter by status. Can be a single status or array of statuses. Defaults to ["active"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied.'
-        ),
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_media_buys_response.py b/src/adcp/types/generated_poc/media_buy/get_media_buys_response.py
index f278502f1..4d6d2baa9 100644
--- a/src/adcp/types/generated_poc/media_buy/get_media_buys_response.py
+++ b/src/adcp/types/generated_poc/media_buy/get_media_buys_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_media_buys_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -35,29 +35,36 @@ class Cancellation(AdCPBaseModel):
     ] = None
 
 
+class ValidAction(Enum):
+    pause = 'pause'
+    resume = 'resume'
+    cancel = 'cancel'
+    update_budget = 'update_budget'
+    update_dates = 'update_dates'
+    update_packages = 'update_packages'
+    add_packages = 'add_packages'
+    sync_creatives = 'sync_creatives'
+
+
 class HistoryItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    action: Annotated[
-        str,
-        Field(
-            description='What happened. Standard actions: created, activated, paused, resumed, canceled, rejected, completed, updated_budget, updated_dates, updated_packages, package_canceled, package_paused, package_resumed. Sellers MAY use additional platform-specific actions (e.g., creative_approved, targeting_updated) — use ext on the history entry for structured metadata about custom actions.'
-        ),
+    revision: Annotated[
+        int, Field(description='Revision number after this change was applied.', ge=1)
     ]
+    timestamp: Annotated[AwareDatetime, Field(description='When this change occurred.')]
     actor: Annotated[
         str | None,
         Field(
             description='Identity of who made the change — derived from authentication context, not caller-provided. Format is seller-defined (e.g., agent URL, user email, API key label).'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    package_id: Annotated[
-        str | None,
-        Field(description='Package affected, when the change targeted a specific package.'),
-    ] = None
-    revision: Annotated[
-        int, Field(description='Revision number after this change was applied.', ge=1)
+    action: Annotated[
+        str,
+        Field(
+            description='What happened. Standard actions: created, activated, paused, resumed, canceled, rejected, completed, updated_budget, updated_dates, updated_packages, package_canceled, package_paused, package_resumed. Sellers MAY use additional platform-specific actions (e.g., creative_approved, targeting_updated) — use ext on the history entry for structured metadata about custom actions.'
+        ),
     ]
     summary: Annotated[
         str | None,
@@ -66,10 +73,14 @@ class HistoryItem(AdCPBaseModel):
             max_length=500,
         ),
     ] = None
-    timestamp: Annotated[AwareDatetime, Field(description='When this change occurred.')]
+    package_id: Annotated[
+        str | None,
+        Field(description='Package affected, when the change targeted a specific package.'),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
 
 
-class Cancellation1(AdCPBaseModel):
+class Cancellation2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
@@ -89,8 +100,8 @@ class CreativeApproval(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    approval_status: creative_approval_status.CreativeApprovalStatus
     creative_id: Annotated[str, Field(description='Creative identifier')]
+    approval_status: creative_approval_status.CreativeApprovalStatus
     rejection_reason: Annotated[
         str | None,
         Field(
@@ -99,6 +110,12 @@ class CreativeApproval(AdCPBaseModel):
     ] = None
 
 
+class SnapshotUnavailableReason(Enum):
+    SNAPSHOT_UNSUPPORTED = 'SNAPSHOT_UNSUPPORTED'
+    SNAPSHOT_TEMPORARILY_UNAVAILABLE = 'SNAPSHOT_TEMPORARILY_UNAVAILABLE'
+    SNAPSHOT_PERMISSION_DENIED = 'SNAPSHOT_PERMISSION_DENIED'
+
+
 class DeliveryStatus(Enum):
     delivering = 'delivering'
     not_delivering = 'not_delivering'
@@ -116,9 +133,23 @@ class Snapshot(AdCPBaseModel):
         AwareDatetime,
         Field(description='ISO 8601 timestamp when this snapshot was captured by the platform'),
     ]
-    clicks: Annotated[
-        float | None, Field(description='Total clicks since package start (when available)', ge=0.0)
-    ] = None
+    staleness_seconds: Annotated[
+        int,
+        Field(
+            description='Maximum age of this data in seconds. For example, 900 means the data may be up to 15 minutes old. Use this to interpret zero delivery: a value of 900 means zero impressions is likely real; a value of 14400 means reporting may still be catching up.',
+            ge=0,
+        ),
+    ]
+    impressions: Annotated[
+        float, Field(description='Total impressions delivered since package start', ge=0.0)
+    ]
+    spend: Annotated[
+        float,
+        Field(
+            description='Total spend since package start, denominated in snapshot.currency when present, otherwise package.currency or media_buy.currency',
+            ge=0.0,
+        ),
+    ]
     currency: Annotated[
         str | None,
         Field(
@@ -126,6 +157,16 @@ class Snapshot(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ] = None
+    clicks: Annotated[
+        float | None, Field(description='Total clicks since package start (when available)', ge=0.0)
+    ] = None
+    pacing_index: Annotated[
+        float | None,
+        Field(
+            description='Current delivery pace relative to expected (1.0 = on track, <1.0 = behind, >1.0 = ahead). Absent when pacing cannot be determined.',
+            ge=0.0,
+        ),
+    ] = None
     delivery_status: Annotated[
         DeliveryStatus | None,
         Field(
@@ -136,42 +177,30 @@ class Snapshot(AdCPBaseModel):
         ext_1.ExtensionObject | None,
         Field(description='Optional extension object for seller-specific snapshot fields.'),
     ] = None
-    impressions: Annotated[
-        float, Field(description='Total impressions delivered since package start', ge=0.0)
-    ]
-    pacing_index: Annotated[
+
+
+class Package(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    package_id: Annotated[str, Field(description="Seller's package identifier")]
+    product_id: Annotated[
+        str | None, Field(description='Product identifier this package is purchased from')
+    ] = None
+    budget: Annotated[
         float | None,
         Field(
-            description='Current delivery pace relative to expected (1.0 = on track, <1.0 = behind, >1.0 = ahead). Absent when pacing cannot be determined.',
+            description='Package budget amount, denominated in package.currency when present, otherwise media_buy.currency',
             ge=0.0,
         ),
     ] = None
-    spend: Annotated[
-        float,
-        Field(
-            description='Total spend since package start, denominated in snapshot.currency when present, otherwise package.currency or media_buy.currency',
-            ge=0.0,
-        ),
-    ]
-    staleness_seconds: Annotated[
-        int,
+    currency: Annotated[
+        str | None,
         Field(
-            description='Maximum age of this data in seconds. For example, 900 means the data may be up to 15 minutes old. Use this to interpret zero delivery: a value of 900 means zero impressions is likely real; a value of 14400 means reporting may still be catching up.',
-            ge=0,
+            description='ISO 4217 currency code for monetary values at this package level (budget, bid_price, snapshot.spend). When absent, inherit media_buy.currency.',
+            pattern='^[A-Z]{3}$',
         ),
-    ]
-
-
-class SnapshotUnavailableReason(Enum):
-    SNAPSHOT_UNSUPPORTED = 'SNAPSHOT_UNSUPPORTED'
-    SNAPSHOT_TEMPORARILY_UNAVAILABLE = 'SNAPSHOT_TEMPORARILY_UNAVAILABLE'
-    SNAPSHOT_PERMISSION_DENIED = 'SNAPSHOT_PERMISSION_DENIED'
-
-
-class Package(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
+    ] = None
     bid_price: Annotated[
         float | None,
         Field(
@@ -179,13 +208,22 @@ class Package(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    budget: Annotated[
+    impressions: Annotated[
         float | None,
+        Field(description='Goal impression count for impression-based packages', ge=0.0),
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Package budget amount, denominated in package.currency when present, otherwise media_buy.currency',
-            ge=0.0,
+            description='ISO 8601 flight start time for this package. Use to determine whether the package is within its scheduled flight before interpreting delivery status.'
         ),
     ] = None
+    end_time: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 flight end time for this package')
+    ] = None
+    paused: Annotated[
+        bool | None, Field(description='Whether this package is currently paused by the buyer')
+    ] = None
     canceled: Annotated[
         bool | None,
         Field(
@@ -193,101 +231,57 @@ class Package(AdCPBaseModel):
         ),
     ] = None
     cancellation: Annotated[
-        Cancellation1 | None,
+        Cancellation2 | None,
         Field(description='Cancellation metadata. Present only when canceled is true.'),
     ] = None
-    creative_approvals: Annotated[
-        list[CreativeApproval] | None,
-        Field(
-            description='Approval status for each creative assigned to this package. Absent when no creatives have been assigned.'
-        ),
-    ] = None
     creative_deadline: Annotated[
         AwareDatetime | None,
         Field(
             description="ISO 8601 timestamp for creative upload or change deadline for this package. After this deadline, creative changes are rejected. When absent, the media buy's creative_deadline applies."
         ),
     ] = None
-    currency: Annotated[
-        str | None,
+    creative_approvals: Annotated[
+        list[CreativeApproval] | None,
         Field(
-            description='ISO 4217 currency code for monetary values at this package level (budget, bid_price, snapshot.spend). When absent, inherit media_buy.currency.',
-            pattern='^[A-Z]{3}$',
+            description='Approval status for each creative assigned to this package. Absent when no creatives have been assigned.'
         ),
     ] = None
-    end_time: Annotated[
-        AwareDatetime | None, Field(description='ISO 8601 flight end time for this package')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     format_ids_pending: Annotated[
         list[format_id.FormatId] | None,
         Field(
             description='Format IDs from the original create_media_buy format_ids_to_provide that have not yet been uploaded via sync_creatives. When empty or absent, all required formats have been provided.'
         ),
     ] = None
-    impressions: Annotated[
-        float | None,
-        Field(description='Goal impression count for impression-based packages', ge=0.0),
-    ] = None
-    package_id: Annotated[str, Field(description="Seller's package identifier")]
-    paused: Annotated[
-        bool | None, Field(description='Whether this package is currently paused by the buyer')
-    ] = None
-    product_id: Annotated[
-        str | None, Field(description='Product identifier this package is purchased from')
-    ] = None
-    snapshot: Annotated[
-        Snapshot | None,
-        Field(
-            description='Near-real-time delivery snapshot for this package. Only present when include_snapshot was true in the request. Represents the latest available entity-level stats from the platform — not billing-grade data.'
-        ),
-    ] = None
     snapshot_unavailable_reason: Annotated[
         SnapshotUnavailableReason | None,
         Field(
             description='Machine-readable reason the snapshot is omitted. Present only when include_snapshot was true and snapshot is unavailable for this package.'
         ),
     ] = None
-    start_time: Annotated[
-        AwareDatetime | None,
+    snapshot: Annotated[
+        Snapshot | None,
         Field(
-            description='ISO 8601 flight start time for this package. Use to determine whether the package is within its scheduled flight before interpreting delivery status.'
+            description='Near-real-time delivery snapshot for this package. Only present when include_snapshot was true in the request. Represents the latest available entity-level stats from the platform — not billing-grade data.'
         ),
     ] = None
-
-
-class ValidAction(Enum):
-    pause = 'pause'
-    resume = 'resume'
-    cancel = 'cancel'
-    update_budget = 'update_budget'
-    update_dates = 'update_dates'
-    update_packages = 'update_packages'
-    add_packages = 'add_packages'
-    sync_creatives = 'sync_creatives'
+    ext: ext_1.ExtensionObject | None = None
 
 
 class MediaBuy(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    media_buy_id: Annotated[str, Field(description="Seller's unique identifier for the media buy")]
     account: Annotated[
         account_1.Account | None, Field(description='Account billed for this media buy')
     ] = None
-    cancellation: Annotated[
-        Cancellation | None,
-        Field(description="Cancellation metadata. Present only when status is 'canceled'."),
-    ] = None
-    confirmed_at: Annotated[
-        AwareDatetime | None,
+    invoice_recipient: Annotated[
+        business_entity.BusinessEntity | None,
         Field(
-            description='ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation.'
+            description='Per-buy invoice recipient when provided at creation. Confirms the seller accepted the billing override. Bank details are omitted (write-only).'
         ),
     ] = None
-    created_at: Annotated[AwareDatetime | None, Field(description='Creation timestamp')] = None
-    creative_deadline: Annotated[
-        AwareDatetime | None, Field(description='ISO 8601 timestamp for creative upload deadline')
-    ] = None
+    status: media_buy_status.MediaBuyStatus
     currency: Annotated[
         str,
         Field(
@@ -295,32 +289,38 @@ class MediaBuy(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    end_time: Annotated[
-        AwareDatetime | None,
+    total_budget: Annotated[
+        float,
         Field(
-            description='ISO 8601 flight end time for this media buy (latest package end_time). Avoids requiring buyers to compute max(packages[].end_time).'
+            description='Total budget amount across all packages, denominated in media_buy.currency',
+            ge=0.0,
         ),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    history: Annotated[
-        list[HistoryItem] | None,
+    ]
+    start_time: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Revision history entries, most recent first. Only present when include_history > 0 in the request. Each entry represents a state change or update to the media buy. Entries are append-only: sellers MUST NOT modify or delete previously emitted history entries. Callers MAY cache entries by revision number. Returns min(N, available entries) when include_history exceeds the total.'
+            description='ISO 8601 flight start time for this media buy (earliest package start_time). Avoids requiring buyers to compute min(packages[].start_time).'
         ),
     ] = None
-    invoice_recipient: Annotated[
-        business_entity.BusinessEntity | None,
+    end_time: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Per-buy invoice recipient when provided at creation. Confirms the seller accepted the billing override. Bank details are omitted (write-only).'
+            description='ISO 8601 flight end time for this media buy (latest package end_time). Avoids requiring buyers to compute max(packages[].end_time).'
         ),
     ] = None
-    media_buy_id: Annotated[str, Field(description="Seller's unique identifier for the media buy")]
-    packages: Annotated[
-        list[Package],
+    creative_deadline: Annotated[
+        AwareDatetime | None, Field(description='ISO 8601 timestamp for creative upload deadline')
+    ] = None
+    confirmed_at: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Packages within this media buy, augmented with creative approval status and optional delivery snapshots'
+            description='ISO 8601 timestamp when the seller confirmed this media buy. A successful create_media_buy response constitutes order confirmation.'
         ),
-    ]
+    ] = None
+    cancellation: Annotated[
+        Cancellation | None,
+        Field(description="Cancellation metadata. Present only when status is 'canceled'."),
+    ] = None
     revision: Annotated[
         int | None,
         Field(
@@ -328,20 +328,7 @@ class MediaBuy(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    start_time: Annotated[
-        AwareDatetime | None,
-        Field(
-            description='ISO 8601 flight start time for this media buy (earliest package start_time). Avoids requiring buyers to compute min(packages[].start_time).'
-        ),
-    ] = None
-    status: media_buy_status.MediaBuyStatus
-    total_budget: Annotated[
-        float,
-        Field(
-            description='Total budget amount across all packages, denominated in media_buy.currency',
-            ge=0.0,
-        ),
-    ]
+    created_at: Annotated[AwareDatetime | None, Field(description='Creation timestamp')] = None
     updated_at: Annotated[AwareDatetime | None, Field(description='Last update timestamp')] = None
     valid_actions: Annotated[
         list[ValidAction] | None,
@@ -349,24 +336,35 @@ class MediaBuy(AdCPBaseModel):
             description='Actions the buyer can perform on this media buy in its current state. Eliminates the need for agents to internalize the state machine — the seller declares what is permitted right now.'
         ),
     ] = None
+    history: Annotated[
+        list[HistoryItem] | None,
+        Field(
+            description='Revision history entries, most recent first. Only present when include_history > 0 in the request. Each entry represents a state change or update to the media buy. Entries are append-only: sellers MUST NOT modify or delete previously emitted history entries. Callers MAY cache entries by revision number. Returns min(N, available entries) when include_history exceeds the total.'
+        ),
+    ] = None
+    packages: Annotated[
+        list[Package],
+        Field(
+            description='Packages within this media buy, augmented with creative approval status and optional delivery snapshots'
+        ),
+    ]
+    ext: ext_1.ExtensionObject | None = None
 
 
 class GetMediaBuysResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    errors: Annotated[
-        list[error.Error] | None,
-        Field(description='Task-specific errors (e.g., media buy not found)'),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     media_buys: Annotated[
         list[MediaBuy],
         Field(
             description='Array of media buys with status, creative approval state, and optional delivery snapshots'
         ),
     ]
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(description='Task-specific errors (e.g., media buy not found)'),
+    ] = None
     pagination: Annotated[
         pagination_response.PaginationResponse | None,
         Field(description='Pagination metadata for the media_buys array.'),
@@ -375,3 +373,5 @@ class GetMediaBuysResponse(AdCPBaseModel):
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_products_request.py b/src/adcp/types/generated_poc/media_buy/get_products_request.py
index 4fb08dcbf..92d01169f 100644
--- a/src/adcp/types/generated_poc/media_buy/get_products_request.py
+++ b/src/adcp/types/generated_poc/media_buy/get_products_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_products_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -25,43 +25,16 @@ class BuyingMode(Enum):
     refine = 'refine'
 
 
-class Field1(Enum):
-    product_id = 'product_id'
-    name = 'name'
-    description = 'description'
-    publisher_properties = 'publisher_properties'
-    channels = 'channels'
-    format_ids = 'format_ids'
-    placements = 'placements'
-    delivery_type = 'delivery_type'
-    exclusivity = 'exclusivity'
-    pricing_options = 'pricing_options'
-    forecast = 'forecast'
-    outcome_measurement = 'outcome_measurement'
-    delivery_measurement = 'delivery_measurement'
-    reporting_capabilities = 'reporting_capabilities'
-    creative_policy = 'creative_policy'
-    catalog_types = 'catalog_types'
-    metric_optimization = 'metric_optimization'
-    conversion_tracking = 'conversion_tracking'
-    data_provider_signals = 'data_provider_signals'
-    max_optimization_goals = 'max_optimization_goals'
-    catalog_match = 'catalog_match'
-    collections = 'collections'
-    collection_targeting_allowed = 'collection_targeting_allowed'
-    installments = 'installments'
-    brief_relevance = 'brief_relevance'
-    expires_at = 'expires_at'
-    product_card = 'product_card'
-    product_card_detailed = 'product_card_detailed'
-    enforced_policies = 'enforced_policies'
-    trusted_match = 'trusted_match'
-
-
 class Refine(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    scope: Annotated[
+        Literal['request'],
+        Field(
+            description='Change scoped to the overall request — direction for the selection as a whole.'
+        ),
+    ]
     ask: Annotated[
         str,
         Field(
@@ -69,12 +42,6 @@ class Refine(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    scope: Annotated[
-        Literal['request'],
-        Field(
-            description='Change scoped to the overall request — direction for the selection as a whole.'
-        ),
-    ]
 
 
 class Action(Enum):
@@ -87,6 +54,10 @@ class Refine1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    scope: Annotated[Literal['product'], Field(description='Change scoped to a specific product.')]
+    id: Annotated[
+        str, Field(description='Product ID from a previous get_products response.', min_length=1)
+    ]
     action: Annotated[
         Action,
         Field(
@@ -100,13 +71,9 @@ class Refine1(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    id: Annotated[
-        str, Field(description='Product ID from a previous get_products response.', min_length=1)
-    ]
-    scope: Annotated[Literal['product'], Field(description='Change scoped to a specific product.')]
 
 
-class Action2(Enum):
+class Action3(Enum):
     include = 'include'
     omit = 'omit'
     finalize = 'finalize'
@@ -116,8 +83,14 @@ class Refine2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    scope: Annotated[
+        Literal['proposal'], Field(description='Change scoped to a specific proposal.')
+    ]
+    id: Annotated[
+        str, Field(description='Proposal ID from a previous get_products response.', min_length=1)
+    ]
     action: Annotated[
-        Action2,
+        Action3,
         Field(
             description="'include': return this proposal with updated allocations and pricing. 'omit': exclude this proposal from the response. 'finalize': request firm pricing and inventory hold — transitions a draft proposal to committed with an expires_at hold window. May trigger seller-side approval (HITL). The buyer should not set a time_budget for finalize requests — they represent a commitment to wait for the result."
         ),
@@ -129,59 +102,90 @@ class Refine2(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    id: Annotated[
-        str, Field(description='Proposal ID from a previous get_products response.', min_length=1)
-    ]
-    scope: Annotated[
-        Literal['proposal'], Field(description='Change scoped to a specific proposal.')
-    ]
+
+
+class Field1(Enum):
+    product_id = 'product_id'
+    name = 'name'
+    description = 'description'
+    publisher_properties = 'publisher_properties'
+    channels = 'channels'
+    format_ids = 'format_ids'
+    placements = 'placements'
+    delivery_type = 'delivery_type'
+    exclusivity = 'exclusivity'
+    pricing_options = 'pricing_options'
+    forecast = 'forecast'
+    outcome_measurement = 'outcome_measurement'
+    delivery_measurement = 'delivery_measurement'
+    reporting_capabilities = 'reporting_capabilities'
+    creative_policy = 'creative_policy'
+    catalog_types = 'catalog_types'
+    metric_optimization = 'metric_optimization'
+    conversion_tracking = 'conversion_tracking'
+    data_provider_signals = 'data_provider_signals'
+    max_optimization_goals = 'max_optimization_goals'
+    catalog_match = 'catalog_match'
+    collections = 'collections'
+    collection_targeting_allowed = 'collection_targeting_allowed'
+    installments = 'installments'
+    brief_relevance = 'brief_relevance'
+    expires_at = 'expires_at'
+    product_card = 'product_card'
+    product_card_detailed = 'product_card_detailed'
+    enforced_policies = 'enforced_policies'
+    trusted_match = 'trusted_match'
 
 
 class GetProductsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    account: Annotated[
-        account_ref.AccountReference | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description="Account for product lookup. Returns products with pricing specific to this account's rate card."
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    brand: Annotated[
-        brand_ref.BrandReference | None,
+    buying_mode: Annotated[
+        BuyingMode,
         Field(
-            description='Brand reference for product discovery context. Resolved to full brand identity at execution time.'
+            description="Declares buyer intent for this request. 'brief': publisher curates product recommendations from the provided brief. 'wholesale': buyer requests raw inventory to apply their own audiences — brief must not be provided, and proposals are omitted. 'refine': iterate on products and proposals from a previous get_products response using the refine array of change requests. v3 clients MUST include buying_mode. Sellers receiving requests from pre-v3 clients without buying_mode SHOULD default to 'brief'."
         ),
-    ] = None
+    ]
     brief: Annotated[
         str | None,
         Field(
             description="Natural language description of campaign requirements. Required when buying_mode is 'brief'. Must not be provided when buying_mode is 'wholesale' or 'refine'."
         ),
     ] = None
-    buying_mode: Annotated[
-        BuyingMode,
+    refine: Annotated[
+        list[Refine | Refine1 | Refine2] | None,
         Field(
-            description="Declares buyer intent for this request. 'brief': publisher curates product recommendations from the provided brief. 'wholesale': buyer requests raw inventory to apply their own audiences — brief must not be provided, and proposals are omitted. 'refine': iterate on products and proposals from a previous get_products response using the refine array of change requests. v3 clients MUST include buying_mode. Sellers receiving requests from pre-v3 clients without buying_mode SHOULD default to 'brief'."
+            description="Array of change requests for iterating on products and proposals from a previous get_products response. Each entry declares a scope (request, product, or proposal) and what the buyer is asking for. Only valid when buying_mode is 'refine'. The seller responds to each entry via refinement_applied in the response, matched by position.",
+            min_length=1,
         ),
-    ]
+    ] = None
+    brand: Annotated[
+        brand_ref.BrandReference | None,
+        Field(
+            description='Brand reference for product discovery context. Resolved to full brand identity at execution time.'
+        ),
+    ] = None
     catalog: Annotated[
         catalog_1.Catalog | None,
         Field(
             description='Catalog of items the buyer wants to promote. The seller matches catalog items against its inventory and returns products where matches exist. Supports all catalog types: a job catalog finds job ad products, a product catalog finds sponsored product slots. Reference a synced catalog by catalog_id, or provide inline items.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    fields: Annotated[
-        list[Field1] | None,
+    account: Annotated[
+        account_ref.AccountReference | None,
         Field(
-            description='Specific product fields to include in the response. When omitted, all fields are returned. Use for lightweight discovery calls where only a subset of product data is needed (e.g., just IDs and pricing for comparison). Required fields (product_id, name) are always included regardless of selection.',
-            min_length=1,
+            description="Account for product lookup. Returns products with pricing specific to this account's rate card."
         ),
     ] = None
-    filters: product_filters.ProductFilters | None = None
-    pagination: pagination_request.PaginationRequest | None = None
     preferred_delivery_types: Annotated[
         list[delivery_type_1.DeliveryType] | None,
         Field(
@@ -189,28 +193,32 @@ class GetProductsRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    filters: product_filters.ProductFilters | None = None
     property_list: Annotated[
         property_list_ref.PropertyListReference | None,
         Field(
             description='[AdCP 3.0] Reference to an externally managed property list. When provided, the sales agent should filter products to only those available on properties in the list.'
         ),
     ] = None
-    refine: Annotated[
-        list[Refine | Refine1 | Refine2] | None,
+    fields: Annotated[
+        list[Field1] | None,
         Field(
-            description="Array of change requests for iterating on products and proposals from a previous get_products response. Each entry declares a scope (request, product, or proposal) and what the buyer is asking for. Only valid when buying_mode is 'refine'. The seller responds to each entry via refinement_applied in the response, matched by position.",
+            description='Specific product fields to include in the response. When omitted, all fields are returned. Use for lightweight discovery calls where only a subset of product data is needed (e.g., just IDs and pricing for comparison). Required fields (product_id, name) are always included regardless of selection.',
             min_length=1,
         ),
     ] = None
-    required_policies: Annotated[
-        list[str] | None,
-        Field(
-            description='Registry policy IDs that the buyer requires to be enforced for products in this response. Sellers filter products to only those that comply with or already enforce the requested policies.'
-        ),
-    ] = None
     time_budget: Annotated[
         duration.Duration | None,
         Field(
             description='Maximum time the buyer will commit to this request. The seller returns the best results achievable within this budget and does not start processes (human approvals, expensive external queries) that cannot complete in time. When omitted, the seller decides timing.'
         ),
     ] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    context: context_1.ContextObject | None = None
+    required_policies: Annotated[
+        list[str] | None,
+        Field(
+            description='Registry policy IDs that the buyer requires to be enforced for products in this response. Sellers filter products to only those that comply with or already enforce the requested policies.'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_products_response.py b/src/adcp/types/generated_poc/media_buy/get_products_response.py
index 06a9a0572..c976f1ae5 100644
--- a/src/adcp/types/generated_poc/media_buy/get_products_response.py
+++ b/src/adcp/types/generated_poc/media_buy/get_products_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_products_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,34 +19,6 @@
 
 
 class Scope(Enum):
-    products = 'products'
-    pricing = 'pricing'
-    forecast = 'forecast'
-    proposals = 'proposals'
-
-
-class IncompleteItem(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    description: Annotated[
-        str, Field(description='Human-readable explanation of what is missing and why.')
-    ]
-    estimated_wait: Annotated[
-        duration.Duration | None,
-        Field(
-            description='How much additional time would resolve this scope. Allows the buyer to decide whether to retry with a larger time_budget.'
-        ),
-    ] = None
-    scope: Annotated[
-        Scope,
-        Field(
-            description="'products': not all inventory sources were searched. 'pricing': products returned but pricing is absent or unconfirmed. 'forecast': products returned but forecast data is absent. 'proposals': proposals were not generated or are incomplete."
-        ),
-    ]
-
-
-class Scope2(Enum):
     request = 'request'
     product = 'product'
     proposal = 'proposal'
@@ -62,67 +34,85 @@ class RefinementAppliedItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    scope: Annotated[
+        Scope | None,
+        Field(
+            description='Echoes the scope from the corresponding refine entry. Allows orchestrators to cross-validate alignment.'
+        ),
+    ] = None
     id: Annotated[
         str | None,
         Field(
             description='Echoes the id from the corresponding refine entry (for product and proposal scopes).'
         ),
     ] = None
+    status: Annotated[
+        Status,
+        Field(
+            description="'applied': the ask was fulfilled. 'partial': the ask was partially fulfilled — see notes for details. 'unable': the seller could not fulfill the ask — see notes for why."
+        ),
+    ]
     notes: Annotated[
         str | None,
         Field(
             description="Seller explanation of what was done, what couldn't be done, or why. Recommended when status is 'partial' or 'unable'."
         ),
     ] = None
+
+
+class Scope3(Enum):
+    products = 'products'
+    pricing = 'pricing'
+    forecast = 'forecast'
+    proposals = 'proposals'
+
+
+class IncompleteItem(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
     scope: Annotated[
-        Scope2 | None,
+        Scope3,
         Field(
-            description='Echoes the scope from the corresponding refine entry. Allows orchestrators to cross-validate alignment.'
+            description="'products': not all inventory sources were searched. 'pricing': products returned but pricing is absent or unconfirmed. 'forecast': products returned but forecast data is absent. 'proposals': proposals were not generated or are incomplete."
         ),
-    ] = None
-    status: Annotated[
-        Status,
+    ]
+    description: Annotated[
+        str, Field(description='Human-readable explanation of what is missing and why.')
+    ]
+    estimated_wait: Annotated[
+        duration.Duration | None,
         Field(
-            description="'applied': the ask was fulfilled. 'partial': the ask was partially fulfilled — see notes for details. 'unable': the seller could not fulfill the ask — see notes for why."
+            description='How much additional time would resolve this scope. Allows the buyer to decide whether to retry with a larger time_budget.'
         ),
-    ]
+    ] = None
 
 
 class GetProductsResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    catalog_applied: Annotated[
-        bool | None,
+    products: Annotated[list[product_1.Product], Field(description='Array of matching products')]
+    proposals: Annotated[
+        list[proposal_1.Proposal] | None,
         Field(
-            description='Whether the seller filtered results based on the provided catalog. True if the seller matched catalog items against its inventory. Absent or false if no catalog was provided or the seller does not support catalog matching.'
+            description='Optional array of proposed media plans with budget allocations across products. Publishers include proposals when they can provide strategic guidance based on the brief. Proposals are actionable - buyers can refine them via follow-up get_products calls within the same session, or execute them directly via create_media_buy.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error] | None,
         Field(description='Task-specific errors and warnings (e.g., product filtering issues)'),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    incomplete: Annotated[
-        list[IncompleteItem] | None,
-        Field(
-            description="Declares what the seller could not finish within the buyer's time_budget or due to internal limits. Each entry identifies a scope that is missing or partial. Absent when the response is fully complete.",
-            min_length=1,
-        ),
-    ] = None
-    pagination: pagination_response.PaginationResponse | None = None
-    products: Annotated[list[product_1.Product], Field(description='Array of matching products')]
     property_list_applied: Annotated[
         bool | None,
         Field(
             description='[AdCP 3.0] Indicates whether property_list filtering was applied. True if the agent filtered products based on the provided property_list. Absent or false if property_list was not provided or not supported by this agent.'
         ),
     ] = None
-    proposals: Annotated[
-        list[proposal_1.Proposal] | None,
+    catalog_applied: Annotated[
+        bool | None,
         Field(
-            description='Optional array of proposed media plans with budget allocations across products. Publishers include proposals when they can provide strategic guidance based on the brief. Proposals are actionable - buyers can refine them via follow-up get_products calls within the same session, or execute them directly via create_media_buy.'
+            description='Whether the seller filtered results based on the provided catalog. True if the seller matched catalog items against its inventory. Absent or false if no catalog was provided or the seller does not support catalog matching.'
         ),
     ] = None
     refinement_applied: Annotated[
@@ -131,7 +121,17 @@ class GetProductsResponse(AdCPBaseModel):
             description="Seller's response to each change request in the refine array, matched by position. Each entry acknowledges whether the corresponding ask was applied, partially applied, or unable to be fulfilled. MUST contain the same number of entries in the same order as the request's refine array. Only present when the request used buying_mode: 'refine'."
         ),
     ] = None
+    incomplete: Annotated[
+        list[IncompleteItem] | None,
+        Field(
+            description="Declares what the seller could not finish within the buyer's time_budget or due to internal limits. Each entry identifies a scope that is missing or partial. Absent when the response is fully complete.",
+            min_length=1,
+        ),
+    ] = None
+    pagination: pagination_response.PaginationResponse | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/list_creative_formats_request.py b/src/adcp/types/generated_poc/media_buy/list_creative_formats_request.py
index 6b07e1f06..94c3b6b0b 100644
--- a/src/adcp/types/generated_poc/media_buy/list_creative_formats_request.py
+++ b/src/adcp/types/generated_poc/media_buy/list_creative_formats_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/list_creative_formats_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -22,29 +22,14 @@ class ListCreativeFormatsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    asset_types: Annotated[
-        list[asset_content_type.AssetContentType] | None,
-        Field(
-            description="Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
-            min_length=1,
-        ),
-    ] = None
-    context: context_1.ContextObject | None = None
-    disclosure_persistence: Annotated[
-        list[disclosure_persistence_1.DisclosurePersistence] | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).',
-            min_length=1,
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    disclosure_positions: Annotated[
-        list[disclosure_position.DisclosurePosition] | None,
-        Field(
-            description="Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
-            min_length=1,
-        ),
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     format_ids: Annotated[
         list[format_id.FormatId] | None,
         Field(
@@ -52,17 +37,17 @@ class ListCreativeFormatsRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    input_format_ids: Annotated[
-        list[format_id.FormatId] | None,
+    asset_types: Annotated[
+        list[asset_content_type.AssetContentType] | None,
         Field(
-            description="Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input — inspect each result's output_format_ids to see what they can produce.",
+            description="Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
             min_length=1,
         ),
     ] = None
-    is_responsive: Annotated[
-        bool | None,
+    max_width: Annotated[
+        int | None,
         Field(
-            description='Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.'
+            description='Maximum width in pixels (inclusive). Returns formats where ANY render has width <= this value. For multi-render formats, matches if at least one render fits.'
         ),
     ] = None
     max_height: Annotated[
@@ -71,10 +56,10 @@ class ListCreativeFormatsRequest(AdCPBaseModel):
             description='Maximum height in pixels (inclusive). Returns formats where ANY render has height <= this value. For multi-render formats, matches if at least one render fits.'
         ),
     ] = None
-    max_width: Annotated[
+    min_width: Annotated[
         int | None,
         Field(
-            description='Maximum width in pixels (inclusive). Returns formats where ANY render has width <= this value. For multi-render formats, matches if at least one render fits.'
+            description='Minimum width in pixels (inclusive). Returns formats where ANY render has width >= this value.'
         ),
     ] = None
     min_height: Annotated[
@@ -83,15 +68,35 @@ class ListCreativeFormatsRequest(AdCPBaseModel):
             description='Minimum height in pixels (inclusive). Returns formats where ANY render has height >= this value.'
         ),
     ] = None
-    min_width: Annotated[
-        int | None,
+    is_responsive: Annotated[
+        bool | None,
         Field(
-            description='Minimum width in pixels (inclusive). Returns formats where ANY render has width >= this value.'
+            description='Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.'
         ),
     ] = None
     name_search: Annotated[
         str | None, Field(description='Search for formats by name (case-insensitive partial match)')
     ] = None
+    wcag_level: Annotated[
+        wcag_level_1.WcagLevel | None,
+        Field(
+            description='Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)'
+        ),
+    ] = None
+    disclosure_positions: Annotated[
+        list[disclosure_position.DisclosurePosition] | None,
+        Field(
+            description="Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
+            min_length=1,
+        ),
+    ] = None
+    disclosure_persistence: Annotated[
+        list[disclosure_persistence_1.DisclosurePersistence] | None,
+        Field(
+            description='Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).',
+            min_length=1,
+        ),
+    ] = None
     output_format_ids: Annotated[
         list[format_id.FormatId] | None,
         Field(
@@ -99,10 +104,13 @@ class ListCreativeFormatsRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    pagination: pagination_request.PaginationRequest | None = None
-    wcag_level: Annotated[
-        wcag_level_1.WcagLevel | None,
+    input_format_ids: Annotated[
+        list[format_id.FormatId] | None,
         Field(
-            description='Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)'
+            description="Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input — inspect each result's output_format_ids to see what they can produce.",
+            min_length=1,
         ),
     ] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/list_creative_formats_response.py b/src/adcp/types/generated_poc/media_buy/list_creative_formats_response.py
index db8adebb7..7e2bbf1e8 100644
--- a/src/adcp/types/generated_poc/media_buy/list_creative_formats_response.py
+++ b/src/adcp/types/generated_poc/media_buy/list_creative_formats_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/list_creative_formats_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,15 +17,15 @@
 
 
 class CreativeAgent(AdCPBaseModel):
-    agent_name: Annotated[
-        str | None, Field(description='Human-readable name for the creative agent')
-    ] = None
     agent_url: Annotated[
         AnyUrl,
         Field(
             description="Base URL for the creative agent (e.g., 'https://reference.adcp.org', 'https://dco.example.com'). Call list_creative_formats on this URL to get its formats."
         ),
     ]
+    agent_name: Annotated[
+        str | None, Field(description='Human-readable name for the creative agent')
+    ] = None
     capabilities: Annotated[
         list[creative_agent_capability.CreativeAgentCapability] | None,
         Field(description='Capabilities this creative agent provides'),
@@ -36,7 +36,12 @@ class ListCreativeFormatsResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    formats: Annotated[
+        list[format.Format],
+        Field(
+            description="Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field."
+        ),
+    ]
     creative_agents: Annotated[
         list[CreativeAgent] | None,
         Field(
@@ -47,15 +52,10 @@ class ListCreativeFormatsResponse(AdCPBaseModel):
         list[error.Error] | None,
         Field(description='Task-specific errors and warnings (e.g., format availability issues)'),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    formats: Annotated[
-        list[format.Format],
-        Field(
-            description="Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field."
-        ),
-    ]
     pagination: pagination_response.PaginationResponse | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/log_event_request.py b/src/adcp/types/generated_poc/media_buy/log_event_request.py
index 53d1eff7b..86ec01d90 100644
--- a/src/adcp/types/generated_poc/media_buy/log_event_request.py
+++ b/src/adcp/types/generated_poc/media_buy/log_event_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/log_event_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,25 +18,34 @@ class LogEventRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     event_source_id: Annotated[
         str, Field(description='Event source configured on the account via sync_event_sources')
     ]
+    test_event_code: Annotated[
+        str | None,
+        Field(
+            description="Test event code for validation without affecting production data. Events with this code appear in the platform's test events UI."
+        ),
+    ] = None
     events: Annotated[
         list[event.Event], Field(description='Events to log', max_length=10000, min_length=1)
     ]
-    ext: ext_1.ExtensionObject | None = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for this request. Prevents duplicate event logging on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
-    test_event_code: Annotated[
-        str | None,
-        Field(
-            description="Test event code for validation without affecting production data. Events with this code appear in the platform's test events UI."
-        ),
-    ] = None
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/log_event_response.py b/src/adcp/types/generated_poc/media_buy/log_event_response.py
index bfd5ef6aa..aa4dc0cfb 100644
--- a/src/adcp/types/generated_poc/media_buy/log_event_response.py
+++ b/src/adcp/types/generated_poc/media_buy/log_event_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/log_event_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,8 +18,8 @@ class PartialFailure(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    code: Annotated[str, Field(description='Error code')]
     event_id: Annotated[str, Field(description='ID of the failed event')]
+    code: Annotated[str, Field(description='Error code')]
     message: Annotated[str, Field(description='Human-readable error message')]
 
 
@@ -27,12 +27,19 @@ class LogEventResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    events_received: Annotated[int, Field(description='Number of events received', ge=0)]
     events_processed: Annotated[
         int, Field(description='Number of events successfully queued for processing', ge=0)
     ]
-    events_received: Annotated[int, Field(description='Number of events received', ge=0)]
-    ext: ext_1.ExtensionObject | None = None
+    partial_failures: Annotated[
+        list[PartialFailure] | None, Field(description='Events that failed validation')
+    ] = None
+    warnings: Annotated[
+        list[str] | None,
+        Field(
+            description='Non-fatal issues (low match quality, missing recommended fields, deprecation notices)'
+        ),
+    ] = None
     match_quality: Annotated[
         float | None,
         Field(
@@ -41,27 +48,20 @@ class LogEventResponse1(AdCPBaseModel):
             le=1.0,
         ),
     ] = None
-    partial_failures: Annotated[
-        list[PartialFailure] | None, Field(description='Events that failed validation')
-    ] = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
-    warnings: Annotated[
-        list[str] | None,
-        Field(
-            description='Non-fatal issues (low match quality, missing recommended fields, deprecation notices)'
-        ),
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class LogEventResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[list[error.Error], Field(description='Operation-level errors', min_length=1)]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/media_buy/package_request.py b/src/adcp/types/generated_poc/media_buy/package_request.py
index 298580079..d12f905a5 100644
--- a/src/adcp/types/generated_poc/media_buy/package_request.py
+++ b/src/adcp/types/generated_poc/media_buy/package_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/package_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -13,7 +13,9 @@
 from ..core import context as context_1
 from ..core import creative_asset, creative_assignment
 from ..core import ext as ext_1
-from ..core import format_id, optimization_goal, targeting
+from ..core import format_id
+from ..core import measurement_terms as measurement_terms_1
+from ..core import optimization_goal, performance_standard, targeting
 from ..enums import pacing as pacing_1
 
 
@@ -21,37 +23,47 @@ class PackageRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    bid_price: Annotated[
-        float | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description="Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
-            ge=0.0,
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    product_id: Annotated[str, Field(description='Product ID for this package')]
+    format_ids: Annotated[
+        list[format_id.FormatId] | None,
+        Field(
+            description='Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.',
+            min_length=1,
         ),
     ] = None
     budget: Annotated[
         float,
         Field(description="Budget allocation for this package in the media buy's currency", ge=0.0),
     ]
-    catalogs: Annotated[
-        list[catalog.Catalog] | None,
+    pacing: pacing_1.Pacing | None = None
+    pricing_option_id: Annotated[
+        str,
         Field(
-            description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.'
+            description="ID of the selected pricing option from the product's pricing_options array"
         ),
-    ] = None
-    context: context_1.ContextObject | None = None
-    creative_assignments: Annotated[
-        list[creative_assignment.CreativeAssignment] | None,
+    ]
+    bid_price: Annotated[
+        float | None,
         Field(
-            description='Assign existing library creatives to this package with optional weights and placement targeting',
-            min_length=1,
+            description="Bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            ge=0.0,
         ),
     ] = None
-    creatives: Annotated[
-        list[creative_asset.CreativeAsset] | None,
+    impressions: Annotated[
+        float | None, Field(description='Impression goal for this package', ge=0.0)
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
-            max_length=100,
-            min_length=1,
+            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
         ),
     ] = None
     end_time: Annotated[
@@ -60,16 +72,17 @@ class PackageRequest(AdCPBaseModel):
             description="Flight end date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's end_time. Must fall within the media buy's date range."
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    format_ids: Annotated[
-        list[format_id.FormatId] | None,
+    paused: Annotated[
+        bool | None,
         Field(
-            description='Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.',
-            min_length=1,
+            description='Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.'
+        ),
+    ] = False
+    catalogs: Annotated[
+        list[catalog.Catalog] | None,
+        Field(
+            description='Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level — sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.'
         ),
-    ] = None
-    impressions: Annotated[
-        float | None, Field(description='Impression goal for this package', ge=0.0)
     ] = None
     optimization_goals: Annotated[
         list[optimization_goal.OptimizationGoal] | None,
@@ -78,24 +91,41 @@ class PackageRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    pacing: pacing_1.Pacing | None = None
-    paused: Annotated[
-        bool | None,
+    targeting_overlay: targeting.TargetingOverlay | None = None
+    measurement_terms: Annotated[
+        measurement_terms_1.MeasurementTerms | None,
         Field(
-            description='Whether this package should be created in a paused state. Paused packages do not deliver impressions. Defaults to false.'
+            description="Buyer's proposed billing measurement and makegood terms. Overrides product defaults. Seller accepts (echoed on confirmed package), rejects with TERMS_REJECTED, or adjusts. When absent, product's measurement_terms apply."
         ),
-    ] = False
-    pricing_option_id: Annotated[
-        str,
+    ] = None
+    performance_standards: Annotated[
+        list[performance_standard.PerformanceStandard] | None,
         Field(
-            description="ID of the selected pricing option from the product's pricing_options array"
+            description="Buyer's proposed performance standards for this package. Overrides product defaults. Seller accepts, rejects with TERMS_REJECTED, or adjusts. When absent, product's performance_standards apply.",
+            min_length=1,
         ),
-    ]
-    product_id: Annotated[str, Field(description='Product ID for this package')]
-    start_time: Annotated[
-        AwareDatetime | None,
+    ] = None
+    creative_assignments: Annotated[
+        list[creative_assignment.CreativeAssignment] | None,
         Field(
-            description="Flight start date/time for this package in ISO 8601 format. When omitted, the package inherits the media buy's start_time. Must fall within the media buy's date range."
+            description='Assign existing library creatives to this package with optional weights and placement targeting',
+            min_length=1,
         ),
     ] = None
-    targeting_overlay: targeting.TargetingOverlay | None = None
+    creatives: Annotated[
+        list[creative_asset.CreativeAsset] | None,
+        Field(
+            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
+            max_length=100,
+            min_length=1,
+        ),
+    ] = None
+    agency_estimate_number: Annotated[
+        str | None,
+        Field(
+            description='Agency estimate or authorization number for this package. Overrides the media buy-level estimate number when different packages correspond to different agency estimates (e.g., different stations or flights within the same buy).',
+            max_length=100,
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/package_update.py b/src/adcp/types/generated_poc/media_buy/package_update.py
index bb78e01b9..4d46bb65d 100644
--- a/src/adcp/types/generated_poc/media_buy/package_update.py
+++ b/src/adcp/types/generated_poc/media_buy/package_update.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/package_update.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -28,6 +28,8 @@ class KeywordTargetsAddItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
+    match_type: Annotated[MatchType, Field(description='Match type for this keyword')]
     bid_price: Annotated[
         float | None,
         Field(
@@ -35,8 +37,6 @@ class KeywordTargetsAddItem(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    keyword: Annotated[str, Field(description='The keyword to target', min_length=1)]
-    match_type: Annotated[MatchType, Field(description='Match type for this keyword')]
 
 
 class KeywordTargetsRemoveItem(AdCPBaseModel):
@@ -67,20 +67,41 @@ class PackageUpdate(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    bid_price: Annotated[
+    package_id: Annotated[str, Field(description="Seller's ID of package to update")]
+    budget: Annotated[
         float | None,
         Field(
-            description="Updated bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
+            description='Updated budget allocation for this package in the currency specified by the pricing option',
             ge=0.0,
         ),
     ] = None
-    budget: Annotated[
+    pacing: pacing_1.Pacing | None = None
+    bid_price: Annotated[
         float | None,
         Field(
-            description='Updated budget allocation for this package in the currency specified by the pricing option',
+            description="Updated bid price for auction-based pricing options. This is the exact bid/price to honor unless selected pricing_option has max_bid=true, in which case bid_price is the buyer's maximum willingness to pay (ceiling).",
             ge=0.0,
         ),
     ] = None
+    impressions: Annotated[
+        float | None, Field(description='Updated impression goal for this package', ge=0.0)
+    ] = None
+    start_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Updated flight start date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+        ),
+    ] = None
+    end_time: Annotated[
+        AwareDatetime | None,
+        Field(
+            description="Updated flight end date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(description='Pause/resume specific package (true = paused, false = active)'),
+    ] = None
     canceled: Annotated[
         Literal[True],
         Field(
@@ -97,31 +118,19 @@ class PackageUpdate(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    creative_assignments: Annotated[
-        list[creative_assignment.CreativeAssignment] | None,
-        Field(
-            description='Replace creative assignments for this package with optional weights and placement targeting. Uses replacement semantics - omit to leave assignments unchanged.'
-        ),
-    ] = None
-    creatives: Annotated[
-        list[creative_asset.CreativeAsset] | None,
+    optimization_goals: Annotated[
+        list[optimization_goal.OptimizationGoal] | None,
         Field(
-            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
-            max_length=100,
+            description='Replace all optimization goals for this package. Uses replacement semantics — omit to leave goals unchanged.',
             min_length=1,
         ),
     ] = None
-    end_time: Annotated[
-        AwareDatetime | None,
+    targeting_overlay: Annotated[
+        targeting.TargetingOverlay | None,
         Field(
-            description="Updated flight end date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+            description='Targeting overlay to apply to this package. Uses replacement semantics — the full overlay replaces the previous one. Omit to leave targeting unchanged. For keyword and negative keyword updates, prefer the incremental operations (keyword_targets_add, keyword_targets_remove, negative_keywords_add, negative_keywords_remove) which avoid replacing the full overlay. Sellers SHOULD return a validation error if targeting_overlay.keyword_targets is present in the same request as keyword_targets_add or keyword_targets_remove, and likewise for negative_keywords.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    impressions: Annotated[
-        float | None, Field(description='Updated impression goal for this package', ge=0.0)
-    ] = None
     keyword_targets_add: Annotated[
         list[KeywordTargetsAddItem] | None,
         Field(
@@ -150,28 +159,19 @@ class PackageUpdate(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    optimization_goals: Annotated[
-        list[optimization_goal.OptimizationGoal] | None,
-        Field(
-            description='Replace all optimization goals for this package. Uses replacement semantics — omit to leave goals unchanged.',
-            min_length=1,
-        ),
-    ] = None
-    pacing: pacing_1.Pacing | None = None
-    package_id: Annotated[str, Field(description="Seller's ID of package to update")]
-    paused: Annotated[
-        bool | None,
-        Field(description='Pause/resume specific package (true = paused, false = active)'),
-    ] = None
-    start_time: Annotated[
-        AwareDatetime | None,
+    creative_assignments: Annotated[
+        list[creative_assignment.CreativeAssignment] | None,
         Field(
-            description="Updated flight start date/time for this package in ISO 8601 format. Must fall within the media buy's date range."
+            description='Replace creative assignments for this package with optional weights and placement targeting. Uses replacement semantics - omit to leave assignments unchanged.'
         ),
     ] = None
-    targeting_overlay: Annotated[
-        targeting.TargetingOverlay | None,
+    creatives: Annotated[
+        list[creative_asset.CreativeAsset] | None,
         Field(
-            description='Targeting overlay to apply to this package. Uses replacement semantics — the full overlay replaces the previous one. Omit to leave targeting unchanged. For keyword and negative keyword updates, prefer the incremental operations (keyword_targets_add, keyword_targets_remove, negative_keywords_add, negative_keywords_remove) which avoid replacing the full overlay. Sellers SHOULD return a validation error if targeting_overlay.keyword_targets is present in the same request as keyword_targets_add or keyword_targets_remove, and likewise for negative_keywords.'
+            description='Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.',
+            max_length=100,
+            min_length=1,
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_request.py b/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_request.py
index 5484b1985..1bc7874a0 100644
--- a/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_request.py
+++ b/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/provide_performance_feedback_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,32 +20,34 @@ class ProvidePerformanceFeedbackRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    creative_id: Annotated[
-        str | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Specific creative asset (if feedback is creative-specific)', min_length=1
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    feedback_source: Annotated[
-        feedback_source_1.FeedbackSource | None, Field(description='Source of the performance data')
-    ] = feedback_source_1.FeedbackSource.buyer_attribution
+    media_buy_id: Annotated[str, Field(description="Seller's media buy identifier", min_length=1)]
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for this request. Prevents duplicate feedback submissions on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
+    ]
     measurement_period: Annotated[
         datetime_range.DatetimeRange, Field(description='Time period for performance measurement')
     ]
-    media_buy_id: Annotated[str, Field(description="Seller's media buy identifier", min_length=1)]
-    metric_type: Annotated[
-        metric_type_1.MetricType | None, Field(description='The business metric being measured')
-    ] = metric_type_1.MetricType.overall_performance
+    performance_index: Annotated[
+        float,
+        Field(
+            description='Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)',
+            ge=0.0,
+        ),
+    ]
     package_id: Annotated[
         str | None,
         Field(
@@ -53,10 +55,17 @@ class ProvidePerformanceFeedbackRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    performance_index: Annotated[
-        float,
+    creative_id: Annotated[
+        str | None,
         Field(
-            description='Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)',
-            ge=0.0,
+            description='Specific creative asset (if feedback is creative-specific)', min_length=1
         ),
-    ]
+    ] = None
+    metric_type: Annotated[
+        metric_type_1.MetricType | None, Field(description='The business metric being measured')
+    ] = metric_type_1.MetricType.overall_performance
+    feedback_source: Annotated[
+        feedback_source_1.FeedbackSource | None, Field(description='Source of the performance data')
+    ] = feedback_source_1.FeedbackSource.buyer_attribution
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_response.py b/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_response.py
index 08f42e5e5..0924343db 100644
--- a/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_response.py
+++ b/src/adcp/types/generated_poc/media_buy/provide_performance_feedback_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/provide_performance_feedback_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,23 +18,22 @@ class ProvidePerformanceFeedbackResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    sandbox: Annotated[
-        bool | None,
-        Field(description='When true, this response contains simulated data from sandbox mode.'),
-    ] = None
     success: Annotated[
         Literal[True],
         Field(description='Whether the performance feedback was successfully received'),
     ]
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class ProvidePerformanceFeedbackResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(
@@ -42,6 +41,7 @@ class ProvidePerformanceFeedbackResponse2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/media_buy/sync_audiences_request.py b/src/adcp/types/generated_poc/media_buy/sync_audiences_request.py
index 9e221b116..32bdeabc2 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_audiences_request.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_audiences_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_audiences_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -30,44 +30,38 @@ class Audience(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    add: Annotated[
-        list[audience_member.AudienceMember] | None,
-        Field(
-            description='Members to add to this audience. Hashed before sending — normalize emails to lowercase+trim, phones to E.164.',
-            min_length=1,
-        ),
-    ] = None
     audience_id: Annotated[
         str,
         Field(
             description="Buyer's identifier for this audience. Used to reference the audience in targeting overlays."
         ),
     ]
-    audience_type: Annotated[
-        AudienceType | None,
+    name: Annotated[str | None, Field(description='Human-readable name for this audience')] = None
+    description: Annotated[
+        str | None,
         Field(
-            description="Intended use for this audience. 'crm': target these users. 'suppression': exclude these users from delivery. 'lookalike_seed': use as a seed for the seller's lookalike modeling. Sellers may handle audiences differently based on type (e.g., suppression lists bypass minimum size requirements on some platforms)."
+            description="Human-readable description of this audience's composition or purpose (e.g., 'High-value customers who purchased in the last 90 days')."
         ),
     ] = None
-    consent_basis: Annotated[
-        consent_basis_1.ConsentBasis | None,
+    audience_type: Annotated[
+        AudienceType | None,
         Field(
-            description='GDPR lawful basis for processing this audience list. Informational — not validated by the protocol, but required by some sellers operating in regulated markets (e.g. EU). When omitted, the buyer asserts they have a lawful basis appropriate to their jurisdiction.'
+            description="Intended use for this audience. 'crm': target these users. 'suppression': exclude these users from delivery. 'lookalike_seed': use as a seed for the seller's lookalike modeling. Sellers may handle audiences differently based on type (e.g., suppression lists bypass minimum size requirements on some platforms)."
         ),
     ] = None
-    delete: Annotated[
-        bool | None,
+    tags: Annotated[
+        list[Tag] | None,
         Field(
-            description='When true, delete this audience from the account entirely. All other fields on this audience object are ignored. Use this to delete a specific audience without affecting others.'
+            description="Buyer-defined tags for organizing and filtering audiences (e.g., 'holiday_2026', 'high_ltv'). Tags are stored by the seller and returned in discovery-only calls."
         ),
     ] = None
-    description: Annotated[
-        str | None,
+    add: Annotated[
+        list[audience_member.AudienceMember] | None,
         Field(
-            description="Human-readable description of this audience's composition or purpose (e.g., 'High-value customers who purchased in the last 90 days')."
+            description='Members to add to this audience. Hashed before sending — normalize emails to lowercase+trim, phones to E.164.',
+            min_length=1,
         ),
     ] = None
-    name: Annotated[str | None, Field(description='Human-readable name for this audience')] = None
     remove: Annotated[
         list[audience_member.AudienceMember] | None,
         Field(
@@ -75,10 +69,16 @@ class Audience(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    tags: Annotated[
-        list[Tag] | None,
+    delete: Annotated[
+        bool | None,
         Field(
-            description="Buyer-defined tags for organizing and filtering audiences (e.g., 'holiday_2026', 'high_ltv'). Tags are stored by the seller and returned in discovery-only calls."
+            description='When true, delete this audience from the account entirely. All other fields on this audience object are ignored. Use this to delete a specific audience without affecting others.'
+        ),
+    ] = None
+    consent_basis: Annotated[
+        consent_basis_1.ConsentBasis | None,
+        Field(
+            description='GDPR lawful basis for processing this audience list. Informational — not validated by the protocol, but required by some sellers operating in regulated markets (e.g. EU). When omitted, the buyer asserts they have a lawful basis appropriate to their jurisdiction.'
         ),
     ] = None
 
@@ -87,6 +87,23 @@ class SyncAudiencesRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `audience_id` gives resource-level dedup per audience, but the sync envelope emits audit events and may trigger downstream refreshes — this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `audiences` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
     account: Annotated[
         account_ref.AccountReference, Field(description='Account to manage audiences for.')
     ]
@@ -97,11 +114,11 @@ class SyncAudiencesRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     delete_missing: Annotated[
         bool | None,
         Field(
             description='When true, buyer-managed audiences on the account not included in this sync will be removed. Does not affect seller-managed audiences. Do not combine with an omitted audiences array or all buyer-managed audiences will be deleted.'
         ),
     ] = False
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/sync_audiences_response.py b/src/adcp/types/generated_poc/media_buy/sync_audiences_response.py
index 3dd571152..20a5a5486 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_audiences_response.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_audiences_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_audiences_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,6 +24,12 @@ class Action(Enum):
     failed = 'failed'
 
 
+class Status(Enum):
+    processing = 'processing'
+    ready = 'ready'
+    too_small = 'too_small'
+
+
 class MatchBreakdownItem(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
@@ -34,12 +40,11 @@ class MatchBreakdownItem(AdCPBaseModel):
             description='Identifier type. Combines hashed PII types (hashed_email, hashed_phone) with universal ID types (rampid, uid2, maid, etc.).'
         ),
     ]
-    match_rate: Annotated[
-        float,
+    submitted: Annotated[
+        int,
         Field(
-            description='Match rate for this identifier type (matched / submitted). Server-authoritative — consumers should prefer this value over computing their own.',
-            ge=0.0,
-            le=1.0,
+            description='Cumulative number of members submitted with this identifier type across all syncs (matches total_uploaded_count semantics, not uploaded_count). Compare with matched to calculate per-type match rate.',
+            ge=0,
         ),
     ]
     matched: Annotated[
@@ -49,57 +54,52 @@ class MatchBreakdownItem(AdCPBaseModel):
             ge=0,
         ),
     ]
-    submitted: Annotated[
-        int,
+    match_rate: Annotated[
+        float,
         Field(
-            description='Cumulative number of members submitted with this identifier type across all syncs (matches total_uploaded_count semantics, not uploaded_count). Compare with matched to calculate per-type match rate.',
-            ge=0,
+            description='Match rate for this identifier type (matched / submitted). Server-authoritative — consumers should prefer this value over computing their own.',
+            ge=0.0,
+            le=1.0,
         ),
     ]
 
 
-class Status(Enum):
-    processing = 'processing'
-    ready = 'ready'
-    too_small = 'too_small'
-
-
 class Audience(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    audience_id: Annotated[
+        str, Field(description="Audience ID from the request (buyer's identifier)")
+    ]
+    name: Annotated[str | None, Field(description='Name of the audience')] = None
+    seller_id: Annotated[
+        str | None,
+        Field(description='Seller-assigned identifier for this audience in their ad platform'),
+    ] = None
     action: Annotated[
         Action,
         Field(
             description="Action taken for this audience. 'status' is present when action is created, updated, or unchanged. 'status' is absent when action is deleted or failed."
         ),
     ]
-    audience_id: Annotated[
-        str, Field(description="Audience ID from the request (buyer's identifier)")
-    ]
-    effective_match_rate: Annotated[
-        float | None,
+    status: Annotated[
+        Status | None,
         Field(
-            description="Deduplicated match rate across all identifier types (matched_count / total_uploaded_count after deduplication). A single number for reach estimation. Populated when status is 'ready'.",
-            ge=0.0,
-            le=1.0,
+            description="Matching status. Present when action is created, updated, or unchanged; absent when action is deleted or failed. 'processing': platform is still matching members against its user base. 'ready': audience is available for targeting, matched_count is populated. 'too_small': matched audience is below the platform's minimum size — add more members and re-sync."
         ),
     ] = None
-    errors: Annotated[
-        list[error.Error] | None,
-        Field(description="Errors for this audience (only present when action='failed')"),
-    ] = None
-    last_synced_at: Annotated[
-        AwareDatetime | None,
+    uploaded_count: Annotated[
+        int | None,
         Field(
-            description='ISO 8601 timestamp of when the most recent sync operation was accepted by the platform. Useful for agents reasoning about audience freshness. Omitted if the seller does not track this.'
+            description='Number of members submitted in this sync operation (delta, not cumulative). In discovery-only calls (no audiences array), this is 0.',
+            ge=0,
         ),
     ] = None
-    match_breakdown: Annotated[
-        list[MatchBreakdownItem] | None,
+    total_uploaded_count: Annotated[
+        int | None,
         Field(
-            description='Per-identifier-type match results. Shows which ID types are resolving and at what rate. Helps buyers decide which identifiers to prioritize. Populated when the seller can report per-type matching. Omitted when the seller only supports aggregate match counts.',
-            min_length=1,
+            description='Cumulative number of members uploaded across all syncs for this audience. Compare with matched_count to calculate match rate (matched_count / total_uploaded_count). Populated when the seller tracks cumulative upload counts.',
+            ge=0,
         ),
     ] = None
     matched_count: Annotated[
@@ -109,38 +109,38 @@ class Audience(AdCPBaseModel):
             ge=0,
         ),
     ] = None
-    minimum_size: Annotated[
-        int | None,
+    effective_match_rate: Annotated[
+        float | None,
         Field(
-            description="Minimum matched audience size required for targeting on this platform. Populated when status is 'too_small'. Helps agents know how many more members are needed.",
-            ge=1,
+            description="Deduplicated match rate across all identifier types (matched_count / total_uploaded_count after deduplication). A single number for reach estimation. Populated when status is 'ready'.",
+            ge=0.0,
+            le=1.0,
         ),
     ] = None
-    name: Annotated[str | None, Field(description='Name of the audience')] = None
-    seller_id: Annotated[
-        str | None,
-        Field(description='Seller-assigned identifier for this audience in their ad platform'),
-    ] = None
-    status: Annotated[
-        Status | None,
+    match_breakdown: Annotated[
+        list[MatchBreakdownItem] | None,
         Field(
-            description="Matching status. Present when action is created, updated, or unchanged; absent when action is deleted or failed. 'processing': platform is still matching members against its user base. 'ready': audience is available for targeting, matched_count is populated. 'too_small': matched audience is below the platform's minimum size — add more members and re-sync."
+            description='Per-identifier-type match results. Shows which ID types are resolving and at what rate. Helps buyers decide which identifiers to prioritize. Populated when the seller can report per-type matching. Omitted when the seller only supports aggregate match counts.',
+            min_length=1,
         ),
     ] = None
-    total_uploaded_count: Annotated[
-        int | None,
+    last_synced_at: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Cumulative number of members uploaded across all syncs for this audience. Compare with matched_count to calculate match rate (matched_count / total_uploaded_count). Populated when the seller tracks cumulative upload counts.',
-            ge=0,
+            description='ISO 8601 timestamp of when the most recent sync operation was accepted by the platform. Useful for agents reasoning about audience freshness. Omitted if the seller does not track this.'
         ),
     ] = None
-    uploaded_count: Annotated[
+    minimum_size: Annotated[
         int | None,
         Field(
-            description='Number of members submitted in this sync operation (delta, not cumulative). In discovery-only calls (no audiences array), this is 0.',
-            ge=0,
+            description="Minimum matched audience size required for targeting on this platform. Populated when status is 'too_small'. Helps agents know how many more members are needed.",
+            ge=1,
         ),
     ] = None
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(description="Errors for this audience (only present when action='failed')"),
+    ] = None
 
 
 class SyncAudiencesResponse1(AdCPBaseModel):
@@ -150,23 +150,23 @@ class SyncAudiencesResponse1(AdCPBaseModel):
     audiences: Annotated[
         list[Audience], Field(description='Results for each audience on the account')
     ]
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class SyncAudiencesResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(description='Operation-level errors that prevented processing', min_length=1),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/media_buy/sync_catalogs_request.py b/src/adcp/types/generated_poc/media_buy/sync_catalogs_request.py
index 20439bc44..a6a944adc 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_catalogs_request.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_catalogs_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_catalogs_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,26 +20,42 @@ class SyncCatalogsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `catalog_id` gives resource-level dedup per catalog, but the sync envelope emits audit events and triggers platform review for large feeds — this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `catalogs` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
     account: Annotated[
         account_ref.AccountReference, Field(description='Account that owns these catalogs.')
     ]
-    catalog_ids: Annotated[
-        list[str] | None,
+    catalogs: Annotated[
+        list[catalog.Catalog] | None,
         Field(
-            description='Optional filter to limit sync scope to specific catalog IDs. When provided, only these catalogs will be created/updated. Other catalogs on the account are unaffected.',
+            description='Array of catalog feeds to sync (create or update). When omitted, the call is discovery-only and returns all existing catalogs on the account without modification.',
             max_length=50,
             min_length=1,
         ),
     ] = None
-    catalogs: Annotated[
-        list[catalog.Catalog] | None,
+    catalog_ids: Annotated[
+        list[str] | None,
         Field(
-            description='Array of catalog feeds to sync (create or update). When omitted, the call is discovery-only and returns all existing catalogs on the account without modification.',
+            description='Optional filter to limit sync scope to specific catalog IDs. When provided, only these catalogs will be created/updated. Other catalogs on the account are unaffected.',
             max_length=50,
             min_length=1,
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     delete_missing: Annotated[
         bool | None,
         Field(
@@ -52,16 +68,17 @@ class SyncCatalogsRequest(AdCPBaseModel):
             description='When true, preview changes without applying them. Returns what would be created/updated/deleted.'
         ),
     ] = False
-    ext: ext_1.ExtensionObject | None = None
-    push_notification_config: Annotated[
-        push_notification_config_1.PushNotificationConfig | None,
-        Field(
-            description='Optional webhook configuration for async sync notifications. Publisher will send webhook when sync completes if operation takes longer than immediate response time (common for large feeds requiring platform review).'
-        ),
-    ] = None
     validation_mode: Annotated[
         validation_mode_1.ValidationMode | None,
         Field(
             description="Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid catalogs and reports errors."
         ),
     ] = validation_mode_1.ValidationMode.strict
+    push_notification_config: Annotated[
+        push_notification_config_1.PushNotificationConfig | None,
+        Field(
+            description='Optional webhook configuration for async sync notifications. Publisher will send webhook when sync completes if operation takes longer than immediate response time (common for large feeds requiring platform review).'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/sync_catalogs_response.py b/src/adcp/types/generated_poc/media_buy/sync_catalogs_response.py
index 8232ea0d0..38a9c32f1 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_catalogs_response.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_catalogs_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_catalogs_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -20,39 +20,28 @@ class ItemIssue(AdCPBaseModel):
         extra='allow',
     )
     item_id: Annotated[str, Field(description='ID of the catalog item with an issue')]
-    reasons: Annotated[list[str] | None, Field(description='Reasons for rejection or warning')] = (
-        None
-    )
     status: Annotated[
         catalog_item_status.CatalogItemStatus, Field(description='Item review status')
     ]
+    reasons: Annotated[list[str] | None, Field(description='Reasons for rejection or warning')] = (
+        None
+    )
 
 
 class Catalog(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    catalog_id: Annotated[str, Field(description='Catalog ID from the request')]
     action: Annotated[
         catalog_action.CatalogAction, Field(description='Action taken for this catalog')
     ]
-    catalog_id: Annotated[str, Field(description='Catalog ID from the request')]
-    changes: Annotated[
-        list[str] | None,
-        Field(description="Field names that were modified (only present when action='updated')"),
-    ] = None
-    errors: Annotated[
-        list[str] | None,
-        Field(description="Validation or processing errors (only present when action='failed')"),
+    platform_id: Annotated[
+        str | None, Field(description='Platform-specific ID assigned to the catalog')
     ] = None
     item_count: Annotated[
         int | None, Field(description='Total number of items in the catalog after sync', ge=0)
     ] = None
-    item_issues: Annotated[
-        list[ItemIssue] | None,
-        Field(
-            description='Per-item issues reported by the platform (rejections, warnings). Only present when the platform performs item-level review.'
-        ),
-    ] = None
     items_approved: Annotated[
         int | None,
         Field(
@@ -74,6 +63,12 @@ class Catalog(AdCPBaseModel):
             ge=0,
         ),
     ] = None
+    item_issues: Annotated[
+        list[ItemIssue] | None,
+        Field(
+            description='Per-item issues reported by the platform (rejections, warnings). Only present when the platform performs item-level review.'
+        ),
+    ] = None
     last_synced_at: Annotated[
         AwareDatetime | None,
         Field(
@@ -86,8 +81,13 @@ class Catalog(AdCPBaseModel):
             description='ISO 8601 timestamp of when the platform will next fetch the feed URL. Only present for URL-based catalogs with update_frequency.'
         ),
     ] = None
-    platform_id: Annotated[
-        str | None, Field(description='Platform-specific ID assigned to the catalog')
+    changes: Annotated[
+        list[str] | None,
+        Field(description="Field names that were modified (only present when action='updated')"),
+    ] = None
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(description="Validation or processing errors (only present when action='failed')"),
     ] = None
     warnings: Annotated[
         list[str] | None, Field(description='Non-fatal warnings about this catalog')
@@ -98,28 +98,27 @@ class SyncCatalogsResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    dry_run: Annotated[
+        bool | None, Field(description='Whether this was a dry run (no actual changes made)')
+    ] = None
     catalogs: Annotated[
         list[Catalog],
         Field(
             description="Results for each catalog processed. Items with action='failed' indicate per-catalog validation/processing failures, not operation-level failures."
         ),
     ]
-    context: context_1.ContextObject | None = None
-    dry_run: Annotated[
-        bool | None, Field(description='Whether this was a dry run (no actual changes made)')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class SyncCatalogsResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(
@@ -127,6 +126,7 @@ class SyncCatalogsResponse2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/media_buy/sync_event_sources_request.py b/src/adcp/types/generated_poc/media_buy/sync_event_sources_request.py
index 49b1cd9b8..483a760b0 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_event_sources_request.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_event_sources_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_event_sources_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,11 +19,10 @@ class EventSource(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    allowed_domains: Annotated[
-        list[str] | None,
-        Field(description='Domains authorized to send events for this event source', min_length=1),
-    ] = None
     event_source_id: Annotated[str, Field(description='Unique identifier for this event source')]
+    name: Annotated[str | None, Field(description='Human-readable name for this event source')] = (
+        None
+    )
     event_types: Annotated[
         list[event_type.EventType] | None,
         Field(
@@ -31,23 +30,36 @@ class EventSource(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    name: Annotated[str | None, Field(description='Human-readable name for this event source')] = (
-        None
-    )
+    allowed_domains: Annotated[
+        list[str] | None,
+        Field(description='Domains authorized to send events for this event source', min_length=1),
+    ] = None
 
 
 class SyncEventSourcesRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. `event_source_id` gives resource-level dedup per source, but the sync envelope emits audit events and can trigger downstream pixel provisioning — this key prevents those side effects from firing twice on retry. Also serves as a request ID on discovery-only calls (when `event_sources` is omitted). MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
     account: Annotated[
         account_ref.AccountReference, Field(description='Account to configure event sources for.')
     ]
-    context: context_1.ContextObject | None = None
-    delete_missing: Annotated[
-        bool | None,
-        Field(description='When true, event sources not included in this sync will be removed'),
-    ] = False
     event_sources: Annotated[
         list[EventSource] | None,
         Field(
@@ -55,4 +67,9 @@ class SyncEventSourcesRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    delete_missing: Annotated[
+        bool | None,
+        Field(description='When true, event sources not included in this sync will be removed'),
+    ] = False
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/sync_event_sources_response.py b/src/adcp/types/generated_poc/media_buy/sync_event_sources_response.py
index 080efc823..b9da3a4d9 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_event_sources_response.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_event_sources_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_event_sources_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,14 +17,6 @@
 from ..enums import event_type
 
 
-class Action(Enum):
-    created = 'created'
-    updated = 'updated'
-    unchanged = 'unchanged'
-    deleted = 'deleted'
-    failed = 'failed'
-
-
 class ManagedBy(Enum):
     buyer = 'buyer'
     seller = 'seller'
@@ -41,9 +33,6 @@ class Setup(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    instructions: Annotated[
-        str | None, Field(description='Human/agent-readable setup instructions')
-    ] = None
     snippet: Annotated[
         str | None,
         Field(description='Code snippet to place on the site (JavaScript, HTML pixel, etc.)'),
@@ -54,30 +43,37 @@ class Setup(AdCPBaseModel):
             description="Type of implementation. 'server_only' means no client-side tag is needed."
         ),
     ] = None
+    instructions: Annotated[
+        str | None, Field(description='Human/agent-readable setup instructions')
+    ] = None
+
+
+class Action(Enum):
+    created = 'created'
+    updated = 'updated'
+    unchanged = 'unchanged'
+    deleted = 'deleted'
+    failed = 'failed'
 
 
 class EventSource(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    action: Annotated[Action, Field(description='Action taken for this event source')]
-    action_source: Annotated[
-        action_source_1.ActionSource | None,
-        Field(description='Type of event source (website pixel, app SDK, in-store, etc.)'),
-    ] = None
-    errors: Annotated[
-        list[str] | None,
-        Field(description="Errors for this event source (only present when action='failed')"),
-    ] = None
     event_source_id: Annotated[str, Field(description='Event source ID from the request')]
+    name: Annotated[str | None, Field(description='Name of the event source')] = None
+    seller_id: Annotated[
+        str | None,
+        Field(
+            description="Seller-assigned identifier for this event source (the ID in the seller's ad platform)"
+        ),
+    ] = None
     event_types: Annotated[
         list[event_type.EventType] | None, Field(description='Event types this source handles')
     ] = None
-    health: Annotated[
-        event_source_health.EventSourceHealth | None,
-        Field(
-            description='Health assessment for this event source. Reflects event volume, data quality, and parameter completeness. Sellers that support health scoring include this on every source (buyer-managed and seller-managed). Absent when the seller does not evaluate event source health.'
-        ),
+    action_source: Annotated[
+        action_source_1.ActionSource | None,
+        Field(description='Type of event source (website pixel, app SDK, in-store, etc.)'),
     ] = None
     managed_by: Annotated[
         ManagedBy | None,
@@ -85,48 +81,52 @@ class EventSource(AdCPBaseModel):
             description="Who manages this event source. 'buyer' = configured via this sync. 'seller' = always-on, managed by the seller (e.g. Amazon sales attribution for Amazon advertisers)."
         ),
     ] = None
-    name: Annotated[str | None, Field(description='Name of the event source')] = None
-    seller_id: Annotated[
-        str | None,
-        Field(
-            description="Seller-assigned identifier for this event source (the ID in the seller's ad platform)"
-        ),
-    ] = None
     setup: Annotated[
         Setup | None,
         Field(
             description='Implementation details for activating this event source (e.g. JavaScript tag, pixel URL)'
         ),
     ] = None
+    action: Annotated[Action, Field(description='Action taken for this event source')]
+    health: Annotated[
+        event_source_health.EventSourceHealth | None,
+        Field(
+            description='Health assessment for this event source. Reflects event volume, data quality, and parameter completeness. Sellers that support health scoring include this on every source (buyer-managed and seller-managed). Absent when the seller does not evaluate event source health.'
+        ),
+    ] = None
+    errors: Annotated[
+        list[error.Error] | None,
+        Field(description="Errors for this event source (only present when action='failed')"),
+    ] = None
 
 
 class SyncEventSourcesResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     event_sources: Annotated[
         list[EventSource],
         Field(
             description='Results for each event source, including both synced and seller-managed sources on the account'
         ),
     ]
-    ext: ext_1.ExtensionObject | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class SyncEventSourcesResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(description='Operation-level errors that prevented processing', min_length=1),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/media_buy/update_media_buy_request.py b/src/adcp/types/generated_poc/media_buy/update_media_buy_request.py
index 9732cdfff..76dda059f 100644
--- a/src/adcp/types/generated_poc/media_buy/update_media_buy_request.py
+++ b/src/adcp/types/generated_poc/media_buy/update_media_buy_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/update_media_buy_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,7 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AwareDatetime, ConfigDict, Field
 
-from ..core import business_entity
+from ..core import account_ref, business_entity
 from ..core import context as context_1
 from ..core import ext as ext_1
 from ..core import push_notification_config as push_notification_config_1
@@ -22,6 +22,32 @@ class UpdateMediaBuyRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    account: Annotated[
+        account_ref.AccountReference,
+        Field(
+            description='Account that owns this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts. Required for governance checks and account resolution.'
+        ),
+    ]
+    media_buy_id: Annotated[str, Field(description="Seller's ID of the media buy to update")]
+    revision: Annotated[
+        int | None,
+        Field(
+            description="Expected current revision for optimistic concurrency. When provided, sellers MUST reject the update with CONFLICT if the media buy's current revision does not match. Obtain from get_media_buys or the most recent update response.",
+            ge=1,
+        ),
+    ] = None
+    paused: Annotated[
+        bool | None,
+        Field(description='Pause/resume the entire media buy (true = paused, false = active)'),
+    ] = None
     canceled: Annotated[
         Literal[True],
         Field(
@@ -35,18 +61,13 @@ class UpdateMediaBuyRequest(AdCPBaseModel):
             max_length=500,
         ),
     ] = None
-    context: context_1.ContextObject | None = None
+    start_time: start_timing.StartTiming | None = None
     end_time: Annotated[
         AwareDatetime | None, Field(description='New end date/time in ISO 8601 format')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    idempotency_key: Annotated[
-        str | None,
-        Field(
-            description='Client-generated idempotency key for safe retries. If an update fails without a response, resending with the same idempotency_key guarantees the update is applied at most once. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
-        ),
+    packages: Annotated[
+        list[package_update.PackageUpdate] | None,
+        Field(description='Package-specific updates for existing packages', min_length=1),
     ] = None
     invoice_recipient: Annotated[
         business_entity.BusinessEntity | None,
@@ -54,7 +75,6 @@ class UpdateMediaBuyRequest(AdCPBaseModel):
             description="Update who receives the invoice for this buy. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
         ),
     ] = None
-    media_buy_id: Annotated[str, Field(description="Seller's ID of the media buy to update")]
     new_packages: Annotated[
         list[package_request.PackageRequest] | None,
         Field(
@@ -62,31 +82,26 @@ class UpdateMediaBuyRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    packages: Annotated[
-        list[package_update.PackageUpdate] | None,
-        Field(description='Package-specific updates for existing packages', min_length=1),
-    ] = None
-    paused: Annotated[
-        bool | None,
-        Field(description='Pause/resume the entire media buy (true = paused, false = active)'),
-    ] = None
-    push_notification_config: Annotated[
-        push_notification_config_1.PushNotificationConfig | None,
-        Field(
-            description='Optional webhook configuration for async update notifications. Publisher will send webhook when update completes if operation takes longer than immediate response time. This is separate from reporting_webhook which configures ongoing campaign reporting.'
-        ),
-    ] = None
     reporting_webhook: Annotated[
         reporting_webhook_1.ReportingWebhook | None,
         Field(
             description='Optional webhook configuration for automated reporting delivery. Updates the reporting configuration for this media buy.'
         ),
     ] = None
-    revision: Annotated[
-        int | None,
+    push_notification_config: Annotated[
+        push_notification_config_1.PushNotificationConfig | None,
         Field(
-            description="Expected current revision for optimistic concurrency. When provided, sellers MUST reject the update with CONFLICT if the media buy's current revision does not match. Obtain from get_media_buys or the most recent update response.",
-            ge=1,
+            description='Optional webhook configuration for async update notifications. Publisher will send webhook when update completes if operation takes longer than immediate response time. This is separate from reporting_webhook which configures ongoing campaign reporting.'
         ),
     ] = None
-    start_time: start_timing.StartTiming | None = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated idempotency key for safe retries. If an update fails without a response, resending with the same idempotency_key guarantees the update is applied at most once. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/update_media_buy_response.py b/src/adcp/types/generated_poc/media_buy/update_media_buy_response.py
index 5f7eb93de..18149c60b 100644
--- a/src/adcp/types/generated_poc/media_buy/update_media_buy_response.py
+++ b/src/adcp/types/generated_poc/media_buy/update_media_buy_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/update_media_buy_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -33,11 +33,11 @@ class UpdateMediaBuyResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(description='Array of errors explaining why the operation failed', min_length=1),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
@@ -45,23 +45,13 @@ class UpdateMediaBuyResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    affected_packages: Annotated[
-        list[package.Package] | None,
-        Field(description='Array of packages that were modified with complete state information'),
-    ] = None
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    implementation_date: Annotated[
-        AwareDatetime | None,
-        Field(description='ISO 8601 timestamp when changes take effect (null if pending approval)'),
-    ] = None
-    invoice_recipient: Annotated[
-        business_entity.BusinessEntity | None,
+    media_buy_id: Annotated[str, Field(description="Seller's identifier for the media buy")]
+    status: Annotated[
+        media_buy_status.MediaBuyStatus | None,
         Field(
-            description='Updated invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).'
+            description="Media buy status after the update. Present when the update changes the media buy's status (e.g., cancellation transitions to 'canceled', pause transitions to 'paused')."
         ),
     ] = None
-    media_buy_id: Annotated[str, Field(description="Seller's identifier for the media buy")]
     revision: Annotated[
         int | None,
         Field(
@@ -69,22 +59,32 @@ class UpdateMediaBuyResponse1(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    sandbox: Annotated[
-        bool | None,
-        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    implementation_date: Annotated[
+        AwareDatetime | None,
+        Field(description='ISO 8601 timestamp when changes take effect (null if pending approval)'),
     ] = None
-    status: Annotated[
-        media_buy_status.MediaBuyStatus | None,
+    invoice_recipient: Annotated[
+        business_entity.BusinessEntity | None,
         Field(
-            description="Media buy status after the update. Present when the update changes the media buy's status (e.g., cancellation transitions to 'canceled', pause transitions to 'paused')."
+            description='Updated invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only).'
         ),
     ] = None
+    affected_packages: Annotated[
+        list[package.Package] | None,
+        Field(description='Array of packages that were modified with complete state information'),
+    ] = None
     valid_actions: Annotated[
         list[ValidAction] | None,
         Field(
             description='Actions the buyer can perform after this update. Saves a round-trip to get_media_buys.'
         ),
     ] = None
+    sandbox: Annotated[
+        bool | None,
+        Field(description='When true, this response contains simulated data from sandbox mode.'),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 UpdateMediaBuyResponse = UpdateMediaBuyResponse1 | UpdateMediaBuyResponse2
diff --git a/src/adcp/types/generated_poc/pricing_options/cpa_option.py b/src/adcp/types/generated_poc/pricing_options/cpa_option.py
index 7fa86c434..76bab92e3 100644
--- a/src/adcp/types/generated_poc/pricing_options/cpa_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/cpa_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/cpa_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,12 +18,16 @@ class CpaPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    currency: Annotated[
-        str,
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['cpa'], Field(description='Cost per acquisition (conversion event)')
+    ]
+    event_type: Annotated[
+        event_type_1.EventType,
         Field(
-            description='ISO 4217 currency code',
-            examples=['USD', 'EUR', 'GBP', 'JPY'],
-            pattern='^[A-Z]{3}$',
+            description='The conversion event type that triggers billing (e.g., purchase, lead, app_install)'
         ),
     ]
     custom_event_name: Annotated[
@@ -32,22 +36,18 @@ class CpaPricingOption(AdCPBaseModel):
             description="Name of the custom event when event_type is 'custom'. Required when event_type is 'custom', ignored otherwise."
         ),
     ] = None
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     event_source_id: Annotated[
         str | None,
         Field(
             description='When present, only events from this specific event source count toward billing. Allows different CPA rates for different sources (e.g., online vs in-store purchases). Must match an event source configured via sync_event_sources.'
         ),
     ] = None
-    event_type: Annotated[
-        event_type_1.EventType,
+    currency: Annotated[
+        str,
         Field(
-            description='The conversion event type that triggers billing (e.g., purchase, lead, app_install)'
+            description='ISO 4217 currency code',
+            examples=['USD', 'EUR', 'GBP', 'JPY'],
+            pattern='^[A-Z]{3}$',
         ),
     ]
     fixed_price: Annotated[
@@ -66,9 +66,9 @@ class CpaPricingOption(AdCPBaseModel):
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    pricing_model: Annotated[
-        Literal['cpa'], Field(description='Cost per acquisition (conversion event)')
-    ]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/pricing_options/cpc_option.py b/src/adcp/types/generated_poc/pricing_options/cpc_option.py
index 23c210996..ddde4ee1d 100644
--- a/src/adcp/types/generated_poc/pricing_options/cpc_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/cpc_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/cpc_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,6 +18,10 @@ class CpcPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpc'], Field(description='Cost per click')]
     currency: Annotated[
         str,
         Field(
@@ -26,12 +30,6 @@ class CpcPricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -52,6 +50,10 @@ class CpcPricingOption(AdCPBaseModel):
             description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
         ),
     ] = False
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
+    ] = None
     min_spend_per_package: Annotated[
         float | None,
         Field(
@@ -65,11 +67,9 @@ class CpcPricingOption(AdCPBaseModel):
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[Literal['cpc'], Field(description='Cost per click')]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/cpcv_option.py b/src/adcp/types/generated_poc/pricing_options/cpcv_option.py
index ba4ce943b..a3a2c1b6c 100644
--- a/src/adcp/types/generated_poc/pricing_options/cpcv_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/cpcv_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/cpcv_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,6 +18,12 @@ class CpcvPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['cpcv'], Field(description='Cost per completed view (100% completion)')
+    ]
     currency: Annotated[
         str,
         Field(
@@ -26,12 +32,6 @@ class CpcvPricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -52,6 +52,10 @@ class CpcvPricingOption(AdCPBaseModel):
             description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
         ),
     ] = False
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
+    ] = None
     min_spend_per_package: Annotated[
         float | None,
         Field(
@@ -65,13 +69,9 @@ class CpcvPricingOption(AdCPBaseModel):
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[
-        Literal['cpcv'], Field(description='Cost per completed view (100% completion)')
-    ]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/cpm_option.py b/src/adcp/types/generated_poc/pricing_options/cpm_option.py
index 1546fad6d..3c442903e 100644
--- a/src/adcp/types/generated_poc/pricing_options/cpm_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/cpm_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/cpm_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,6 +18,10 @@ class CpmPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpm'], Field(description='Cost per 1,000 impressions')]
     currency: Annotated[
         str,
         Field(
@@ -26,12 +30,6 @@ class CpmPricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -52,6 +50,10 @@ class CpmPricingOption(AdCPBaseModel):
             description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
         ),
     ] = False
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
+    ] = None
     min_spend_per_package: Annotated[
         float | None,
         Field(
@@ -65,11 +67,9 @@ class CpmPricingOption(AdCPBaseModel):
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[Literal['cpm'], Field(description='Cost per 1,000 impressions')]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/cpp_option.py b/src/adcp/types/generated_poc/pricing_options/cpp_option.py
index f6da98049..13857fd83 100644
--- a/src/adcp/types/generated_poc/pricing_options/cpp_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/cpp_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/cpp_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,18 +19,18 @@ class Parameters(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    demographic: Annotated[
-        str,
-        Field(
-            description='Target demographic code within the specified demographic_system (e.g., P18-49 for Nielsen, ABC1 Adults for BARB)'
-        ),
-    ]
     demographic_system: Annotated[
         demographic_system_1.DemographicSystem | None,
         Field(
             description='Measurement system for the demographic field. Defaults to nielsen when omitted.'
         ),
     ] = None
+    demographic: Annotated[
+        str,
+        Field(
+            description='Target demographic code within the specified demographic_system (e.g., P18-49 for Nielsen, ABC1 Adults for BARB)'
+        ),
+    ]
     min_points: Annotated[float | None, Field(description='Minimum GRPs/TRPs required', ge=0.0)] = (
         None
     )
@@ -40,6 +40,10 @@ class CppPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpp'], Field(description='Cost per Gross Rating Point')]
     currency: Annotated[
         str,
         Field(
@@ -48,12 +52,6 @@ class CppPricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -68,6 +66,13 @@ class CppPricingOption(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
+    ] = None
+    parameters: Annotated[
+        Parameters, Field(description='CPP-specific parameters for demographic targeting')
+    ]
     min_spend_per_package: Annotated[
         float | None,
         Field(
@@ -75,20 +80,15 @@ class CppPricingOption(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    parameters: Annotated[
-        Parameters, Field(description='CPP-specific parameters for demographic targeting')
-    ]
     price_breakdown: Annotated[
         price_breakdown_1.PriceBreakdown | None,
         Field(
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[Literal['cpp'], Field(description='Cost per Gross Rating Point')]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/cpv_option.py b/src/adcp/types/generated_poc/pricing_options/cpv_option.py
index c5531c042..b2430bb15 100644
--- a/src/adcp/types/generated_poc/pricing_options/cpv_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/cpv_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/cpv_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -43,6 +43,10 @@ class CpvPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[Literal['cpv'], Field(description='Cost per view at threshold')]
     currency: Annotated[
         str,
         Field(
@@ -51,12 +55,6 @@ class CpvPricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -77,6 +75,13 @@ class CpvPricingOption(AdCPBaseModel):
             description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
         ),
     ] = False
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
+    ] = None
+    parameters: Annotated[
+        Parameters, Field(description='CPV-specific parameters defining the view threshold')
+    ]
     min_spend_per_package: Annotated[
         float | None,
         Field(
@@ -84,20 +89,15 @@ class CpvPricingOption(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    parameters: Annotated[
-        Parameters, Field(description='CPV-specific parameters defining the view threshold')
-    ]
     price_breakdown: Annotated[
         price_breakdown_1.PriceBreakdown | None,
         Field(
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[Literal['cpv'], Field(description='Cost per view at threshold')]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/flat_rate_option.py b/src/adcp/types/generated_poc/pricing_options/flat_rate_option.py
index de5350907..b8089c23a 100644
--- a/src/adcp/types/generated_poc/pricing_options/flat_rate_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/flat_rate_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/flat_rate_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,9 +18,21 @@ class Parameters(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    daypart: Annotated[
-        str | None,
-        Field(description='Named daypart for this slot (e.g., morning_commute, evening_rush)'),
+    type: Annotated[
+        Literal['dooh'], Field(description='Discriminator identifying this as DOOH parameters')
+    ]
+    sov_percentage: Annotated[
+        float | None,
+        Field(description='Guaranteed share of voice as a percentage (0-100)', ge=0.0, le=100.0),
+    ] = None
+    loop_duration_seconds: Annotated[
+        int | None, Field(description='Duration of the ad loop rotation in seconds', ge=1)
+    ] = None
+    min_plays_per_hour: Annotated[
+        int | None, Field(description='Minimum number of plays per hour guaranteed', ge=1)
+    ] = None
+    venue_package: Annotated[
+        str | None, Field(description='Named collection of screens included in this buy')
     ] = None
     duration_hours: Annotated[
         float | None,
@@ -29,6 +41,10 @@ class Parameters(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
+    daypart: Annotated[
+        str | None,
+        Field(description='Named daypart for this slot (e.g., morning_commute, evening_rush)'),
+    ] = None
     estimated_impressions: Annotated[
         int | None,
         Field(
@@ -36,28 +52,18 @@ class Parameters(AdCPBaseModel):
             ge=0,
         ),
     ] = None
-    loop_duration_seconds: Annotated[
-        int | None, Field(description='Duration of the ad loop rotation in seconds', ge=1)
-    ] = None
-    min_plays_per_hour: Annotated[
-        int | None, Field(description='Minimum number of plays per hour guaranteed', ge=1)
-    ] = None
-    sov_percentage: Annotated[
-        float | None,
-        Field(description='Guaranteed share of voice as a percentage (0-100)', ge=0.0, le=100.0),
-    ] = None
-    type: Annotated[
-        Literal['dooh'], Field(description='Discriminator identifying this as DOOH parameters')
-    ]
-    venue_package: Annotated[
-        str | None, Field(description='Named collection of screens included in this buy')
-    ] = None
 
 
 class FlatRatePricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['flat_rate'], Field(description='Fixed cost regardless of delivery volume')
+    ]
     currency: Annotated[
         str,
         Field(
@@ -66,12 +72,6 @@ class FlatRatePricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -86,12 +86,9 @@ class FlatRatePricingOption(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    min_spend_per_package: Annotated[
-        float | None,
-        Field(
-            description='Minimum spend requirement per package using this pricing option, in the specified currency',
-            ge=0.0,
-        ),
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
     ] = None
     parameters: Annotated[
         Parameters | None,
@@ -100,19 +97,22 @@ class FlatRatePricingOption(AdCPBaseModel):
             title='DoohParameters',
         ),
     ] = None
+    min_spend_per_package: Annotated[
+        float | None,
+        Field(
+            description='Minimum spend requirement per package using this pricing option, in the specified currency',
+            ge=0.0,
+        ),
+    ] = None
     price_breakdown: Annotated[
         price_breakdown_1.PriceBreakdown | None,
         Field(
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[
-        Literal['flat_rate'], Field(description='Fixed cost regardless of delivery volume')
-    ]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/price_breakdown.py b/src/adcp/types/generated_poc/pricing_options/price_breakdown.py
index 2c754f772..5c16e21fc 100644
--- a/src/adcp/types/generated_poc/pricing_options/price_breakdown.py
+++ b/src/adcp/types/generated_poc/pricing_options/price_breakdown.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/price_breakdown.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,27 +16,6 @@ class Adjustments(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    amount: Annotated[
-        float | None,
-        Field(
-            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
-            gt=0.0,
-        ),
-    ] = None
-    beneficiary: Annotated[
-        str | None,
-        Field(
-            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
-            max_length=256,
-        ),
-    ] = None
-    description: Annotated[
-        str | None,
-        Field(
-            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
-            max_length=256,
-        ),
-    ] = None
     kind: adjustment_kind.PriceAdjustmentKind
     name: Annotated[
         str,
@@ -65,33 +44,33 @@ class Adjustments(AdCPBaseModel):
             lt=1.0,
         ),
     ]
-
-
-class Adjustments1(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
     amount: Annotated[
-        float,
+        float | None,
         Field(
             description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
             gt=0.0,
         ),
-    ]
-    beneficiary: Annotated[
+    ] = None
+    description: Annotated[
         str | None,
         Field(
-            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
             max_length=256,
         ),
     ] = None
-    description: Annotated[
+    beneficiary: Annotated[
         str | None,
         Field(
-            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
             max_length=256,
         ),
     ] = None
+
+
+class Adjustments21(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
     kind: adjustment_kind.PriceAdjustmentKind
     name: Annotated[
         str,
@@ -120,20 +99,33 @@ class Adjustments1(AdCPBaseModel):
             lt=1.0,
         ),
     ] = None
+    amount: Annotated[
+        float,
+        Field(
+            description="Adjustment as a fixed monetary amount in the pricing option's currency. Always positive — kind determines the economic effect. Mutually exclusive with rate.",
+            gt=0.0,
+        ),
+    ]
+    description: Annotated[
+        str | None,
+        Field(
+            description="Human-readable description of this adjustment (e.g., 'Malstaffel 12x', '2% Skonto 10 Tage')",
+            max_length=256,
+        ),
+    ] = None
+    beneficiary: Annotated[
+        str | None,
+        Field(
+            description="Identifies who receives this adjustment's value. For commissions, the intermediary (e.g., a sellers.json domain, an AdCP account ID, or a human-readable party name). Optional but recommended for multi-intermediary transparency.",
+            max_length=256,
+        ),
+    ] = None
 
 
 class PriceBreakdown(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    adjustments: Annotated[
-        list[Adjustments | Adjustments1],
-        Field(
-            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
-            max_length=20,
-            min_length=1,
-        ),
-    ]
     list_price: Annotated[
         float,
         Field(
@@ -141,3 +133,11 @@ class PriceBreakdown(AdCPBaseModel):
             gt=0.0,
         ),
     ]
+    adjustments: Annotated[
+        list[Adjustments | Adjustments21],
+        Field(
+            description="Ordered list of price adjustments. Fee and discount adjustments walk list_price to fixed_price — fees increase the running price, discounts reduce it. Commission and settlement adjustments are disclosed for transparency but do not affect the buyer's committed price.",
+            max_length=20,
+            min_length=1,
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/time_option.py b/src/adcp/types/generated_poc/pricing_options/time_option.py
index 758b56fd2..7dc853726 100644
--- a/src/adcp/types/generated_poc/pricing_options/time_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/time_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/time_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -26,28 +26,35 @@ class Parameters(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    max_duration: Annotated[
-        int | None,
+    time_unit: Annotated[
+        TimeUnit,
         Field(
-            description='Maximum booking duration in time_units. Must be >= min_duration when both are present.',
-            ge=1,
+            description='The time unit for pricing. Total cost = fixed_price × number of time_units in the campaign flight.'
         ),
-    ] = None
+    ]
     min_duration: Annotated[
         int | None, Field(description='Minimum booking duration in time_units', ge=1)
     ] = None
-    time_unit: Annotated[
-        TimeUnit,
+    max_duration: Annotated[
+        int | None,
         Field(
-            description='The time unit for pricing. Total cost = fixed_price × number of time_units in the campaign flight.'
+            description='Maximum booking duration in time_units. Must be >= min_duration when both are present.',
+            ge=1,
         ),
-    ]
+    ] = None
 
 
 class TimeBasedPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['time'],
+        Field(description='Cost per time unit - rate scales with campaign duration'),
+    ]
     currency: Annotated[
         str,
         Field(
@@ -56,12 +63,6 @@ class TimeBasedPricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -76,6 +77,11 @@ class TimeBasedPricingOption(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
+    ] = None
+    parameters: Annotated[Parameters, Field(description='Time-based pricing parameters')]
     min_spend_per_package: Annotated[
         float | None,
         Field(
@@ -83,21 +89,15 @@ class TimeBasedPricingOption(AdCPBaseModel):
             ge=0.0,
         ),
     ] = None
-    parameters: Annotated[Parameters, Field(description='Time-based pricing parameters')]
     price_breakdown: Annotated[
         price_breakdown_1.PriceBreakdown | None,
         Field(
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[
-        Literal['time'],
-        Field(description='Cost per time unit - rate scales with campaign duration'),
-    ]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/pricing_options/vcpm_option.py b/src/adcp/types/generated_poc/pricing_options/vcpm_option.py
index 64cfbbba0..8dd5a86ea 100644
--- a/src/adcp/types/generated_poc/pricing_options/vcpm_option.py
+++ b/src/adcp/types/generated_poc/pricing_options/vcpm_option.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  pricing_options/vcpm_option.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,6 +18,12 @@ class VcpmPricingOption(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    pricing_option_id: Annotated[
+        str, Field(description='Unique identifier for this pricing option within the product')
+    ]
+    pricing_model: Annotated[
+        Literal['vcpm'], Field(description='Cost per 1,000 viewable impressions (MRC standard)')
+    ]
     currency: Annotated[
         str,
         Field(
@@ -26,12 +32,6 @@ class VcpmPricingOption(AdCPBaseModel):
             pattern='^[A-Z]{3}$',
         ),
     ]
-    eligible_adjustments: Annotated[
-        list[adjustment_kind.PriceAdjustmentKind] | None,
-        Field(
-            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
-        ),
-    ] = None
     fixed_price: Annotated[
         float | None,
         Field(
@@ -52,6 +52,10 @@ class VcpmPricingOption(AdCPBaseModel):
             description="When true, bid_price is interpreted as the buyer's maximum willingness to pay (ceiling) rather than an exact price. Sellers may optimize actual clearing prices between floor_price and bid_price based on delivery pacing. When false or absent, bid_price (if provided) is the exact bid/price to honor."
         ),
     ] = False
+    price_guidance: Annotated[
+        price_guidance_1.PriceGuidance | None,
+        Field(description='Optional pricing guidance for auction-based bidding'),
+    ] = None
     min_spend_per_package: Annotated[
         float | None,
         Field(
@@ -65,13 +69,9 @@ class VcpmPricingOption(AdCPBaseModel):
             description='Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present.'
         ),
     ] = None
-    price_guidance: Annotated[
-        price_guidance_1.PriceGuidance | None,
-        Field(description='Optional pricing guidance for auction-based bidding'),
+    eligible_adjustments: Annotated[
+        list[adjustment_kind.PriceAdjustmentKind] | None,
+        Field(
+            description='Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared — the buyer should check price_breakdown if present.'
+        ),
     ] = None
-    pricing_model: Annotated[
-        Literal['vcpm'], Field(description='Cost per 1,000 viewable impressions (MRC standard)')
-    ]
-    pricing_option_id: Annotated[
-        str, Field(description='Unique identifier for this pricing option within the product')
-    ]
diff --git a/src/adcp/types/generated_poc/property/authorization_result.py b/src/adcp/types/generated_poc/property/authorization_result.py
new file mode 100644
index 000000000..6861374a5
--- /dev/null
+++ b/src/adcp/types/generated_poc/property/authorization_result.py
@@ -0,0 +1,49 @@
+# generated by datamodel-codegen:
+#   filename:  property/authorization_result.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+
+class Status(Enum):
+    authorized = 'authorized'
+    unauthorized = 'unauthorized'
+    unknown = 'unknown'
+
+
+class Violation(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    code: Annotated[str, Field(description='Machine-readable violation code')]
+    message: Annotated[str, Field(description='Human-readable violation description')]
+
+
+class AuthorizationResult(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    status: Annotated[
+        Status,
+        Field(
+            description='Authorization status: authorized (agent in adagents.json), unauthorized (agent not in adagents.json), unknown (could not fetch or parse adagents.json)'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str | None, Field(description='The publisher domain where adagents.json was checked')
+    ] = None
+    sales_agent_url: Annotated[
+        AnyUrl | None, Field(description='The sales agent URL that was validated')
+    ] = None
+    violation: Annotated[
+        Violation | None,
+        Field(
+            description='Details about the authorization failure (only present for unauthorized status)'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/property/base_property_source.py b/src/adcp/types/generated_poc/property/base_property_source.py
index abb268900..07d7dfb16 100644
--- a/src/adcp/types/generated_poc/property/base_property_source.py
+++ b/src/adcp/types/generated_poc/property/base_property_source.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/base_property_source.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,6 +16,10 @@ class BasePropertySource1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    selection_type: Annotated[
+        Literal['publisher_tags'],
+        Field(description='Discriminator indicating selection by property tags within a publisher'),
+    ]
     publisher_domain: Annotated[
         str,
         Field(
@@ -23,10 +27,6 @@ class BasePropertySource1(AdCPBaseModel):
             pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
         ),
     ]
-    selection_type: Annotated[
-        Literal['publisher_tags'],
-        Field(description='Discriminator indicating selection by property tags within a publisher'),
-    ]
     tags: Annotated[
         list[property_tag.PropertyTag],
         Field(
@@ -40,9 +40,11 @@ class BasePropertySource2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    property_ids: Annotated[
-        list[property_id.PropertyId],
-        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
+    selection_type: Annotated[
+        Literal['publisher_ids'],
+        Field(
+            description='Discriminator indicating selection by specific property IDs within a publisher'
+        ),
     ]
     publisher_domain: Annotated[
         str,
@@ -51,11 +53,9 @@ class BasePropertySource2(AdCPBaseModel):
             pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
         ),
     ]
-    selection_type: Annotated[
-        Literal['publisher_ids'],
-        Field(
-            description='Discriminator indicating selection by specific property IDs within a publisher'
-        ),
+    property_ids: Annotated[
+        list[property_id.PropertyId],
+        Field(description="Specific property IDs from the publisher's adagents.json", min_length=1),
     ]
 
 
@@ -63,14 +63,14 @@ class BasePropertySource3(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    identifiers: Annotated[
-        list[identifier.Identifier],
-        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
-    ]
     selection_type: Annotated[
         Literal['identifiers'],
         Field(description='Discriminator indicating selection by direct identifiers'),
     ]
+    identifiers: Annotated[
+        list[identifier.Identifier],
+        Field(description='Direct property identifiers (domains, app IDs, etc.)', min_length=1),
+    ]
 
 
 class BasePropertySource(
diff --git a/src/adcp/types/generated_poc/property/create_property_list_request.py b/src/adcp/types/generated_poc/property/create_property_list_request.py
index 07478b2ab..a1797862c 100644
--- a/src/adcp/types/generated_poc/property/create_property_list_request.py
+++ b/src/adcp/types/generated_poc/property/create_property_list_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/create_property_list_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,6 +19,18 @@ class CreatePropertyListRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
     base_properties: Annotated[
         list[base_property_source.BasePropertySource] | None,
         Field(
@@ -26,27 +38,24 @@ class CreatePropertyListRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    filters: Annotated[
+        property_list_filters.PropertyListFilters | None,
+        Field(description='Dynamic filters to apply when resolving the list'),
+    ] = None
     brand: Annotated[
         brand_ref.BrandReference | None,
         Field(
             description='Brand reference. When provided, the agent automatically applies appropriate rules based on brand characteristics (industry, target_audience, etc.). Resolved at execution time.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
-        None
-    )
-    ext: ext_1.ExtensionObject | None = None
-    filters: Annotated[
-        property_list_filters.PropertyListFilters | None,
-        Field(description='Dynamic filters to apply when resolving the list'),
-    ] = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for this request. Prevents duplicate property list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
-    name: Annotated[str, Field(description='Human-readable name for the list')]
+    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/create_property_list_response.py b/src/adcp/types/generated_poc/property/create_property_list_response.py
index f8bb98e30..302ef8d88 100644
--- a/src/adcp/types/generated_poc/property/create_property_list_response.py
+++ b/src/adcp/types/generated_poc/property/create_property_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/create_property_list_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 from . import property_list
 
@@ -17,11 +18,12 @@ class CreatePropertyListResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    list: Annotated[property_list.PropertyList, Field(description='The created property list')]
     auth_token: Annotated[
         str,
         Field(
             description='Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time.'
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    list: Annotated[property_list.PropertyList, Field(description='The created property list')]
diff --git a/src/adcp/types/generated_poc/property/delete_property_list_request.py b/src/adcp/types/generated_poc/property/delete_property_list_request.py
index ec8630ef1..ef62f80bf 100644
--- a/src/adcp/types/generated_poc/property/delete_property_list_request.py
+++ b/src/adcp/types/generated_poc/property/delete_property_list_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/delete_property_list_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,14 +17,23 @@ class DeletePropertyListRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to delete')]
     context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
-    list_id: Annotated[str, Field(description='ID of the property list to delete')]
+    ]
diff --git a/src/adcp/types/generated_poc/property/delete_property_list_response.py b/src/adcp/types/generated_poc/property/delete_property_list_response.py
index 66378dad0..b4e15b552 100644
--- a/src/adcp/types/generated_poc/property/delete_property_list_response.py
+++ b/src/adcp/types/generated_poc/property/delete_property_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/delete_property_list_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 
 
@@ -17,5 +18,6 @@ class DeletePropertyListResponse(AdCPBaseModel):
         extra='forbid',
     )
     deleted: Annotated[bool, Field(description='Whether the list was successfully deleted')]
-    ext: ext_1.ExtensionObject | None = None
     list_id: Annotated[str, Field(description='ID of the deleted list')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/delivery_record.py b/src/adcp/types/generated_poc/property/delivery_record.py
new file mode 100644
index 000000000..c0947c486
--- /dev/null
+++ b/src/adcp/types/generated_poc/property/delivery_record.py
@@ -0,0 +1,39 @@
+# generated by datamodel-codegen:
+#   filename:  property/delivery_record.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+from ..core import ext as ext_1
+from ..core import identifier as identifier_1
+
+
+class DeliveryRecord(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    identifier: Annotated[
+        identifier_1.Identifier,
+        Field(description='The property identifier where impressions were delivered'),
+    ]
+    impressions: Annotated[
+        int, Field(description='Number of impressions delivered to this identifier', ge=0)
+    ]
+    record_id: Annotated[
+        str | None,
+        Field(
+            description='Optional client-provided ID for correlating results back to source data'
+        ),
+    ] = None
+    sales_agent_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description="URL of the sales agent that sold this inventory. If provided, authorization is validated against the property's adagents.json."
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/get_property_list_request.py b/src/adcp/types/generated_poc/property/get_property_list_request.py
index 2fccfa7e8..a08fea109 100644
--- a/src/adcp/types/generated_poc/property/get_property_list_request.py
+++ b/src/adcp/types/generated_poc/property/get_property_list_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/get_property_list_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,32 +17,40 @@ class Pagination(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    cursor: Annotated[
-        str | None,
-        Field(description='Opaque cursor from a previous response to fetch the next page'),
-    ] = None
     max_results: Annotated[
         int | None,
         Field(description='Maximum number of identifiers to return per page', ge=1, le=10000),
     ] = 1000
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
 
 
 class GetPropertyListRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    list_id: Annotated[str, Field(description='ID of the property list to retrieve')]
-    pagination: Annotated[
-        Pagination | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Pagination parameters. Uses higher limits than standard pagination because property lists can contain tens of thousands of identifiers.'
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to retrieve')]
     resolve: Annotated[
         bool | None,
         Field(
             description='Whether to apply filters and return resolved identifiers (default: true)'
         ),
     ] = True
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Pagination parameters. Uses higher limits than standard pagination because property lists can contain tens of thousands of identifiers.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/get_property_list_response.py b/src/adcp/types/generated_poc/property/get_property_list_response.py
index 8013e5e1a..722361f95 100644
--- a/src/adcp/types/generated_poc/property/get_property_list_response.py
+++ b/src/adcp/types/generated_poc/property/get_property_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/get_property_list_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AwareDatetime, ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 from ..core import identifier, pagination_response
 from . import property_list
@@ -21,6 +22,20 @@ class GetPropertyListResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    list: Annotated[
+        property_list.PropertyList,
+        Field(description='The property list metadata (always returned)'),
+    ]
+    identifiers: Annotated[
+        _list[identifier.Identifier] | None,
+        Field(
+            description='Resolved identifiers that passed filters (if resolve=true). Cache these locally for real-time use.'
+        ),
+    ] = None
+    pagination: pagination_response.PaginationResponse | None = None
+    resolved_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was resolved')
+    ] = None
     cache_valid_until: Annotated[
         AwareDatetime | None,
         Field(
@@ -33,18 +48,5 @@ class GetPropertyListResponse(AdCPBaseModel):
             description="Properties included in the list despite missing feature data. Only present when a feature_requirement has if_not_covered='include'. Maps feature_id to list of identifiers not covered for that feature."
         ),
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    identifiers: Annotated[
-        _list[identifier.Identifier] | None,
-        Field(
-            description='Resolved identifiers that passed filters (if resolve=true). Cache these locally for real-time use.'
-        ),
-    ] = None
-    list: Annotated[
-        property_list.PropertyList,
-        Field(description='The property list metadata (always returned)'),
-    ]
-    pagination: pagination_response.PaginationResponse | None = None
-    resolved_at: Annotated[
-        AwareDatetime | None, Field(description='When the list was resolved')
-    ] = None
diff --git a/src/adcp/types/generated_poc/property/list_property_lists_request.py b/src/adcp/types/generated_poc/property/list_property_lists_request.py
index a21ff0b4b..1254d58ea 100644
--- a/src/adcp/types/generated_poc/property/list_property_lists_request.py
+++ b/src/adcp/types/generated_poc/property/list_property_lists_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/list_property_lists_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,12 +18,20 @@ class ListPropertyListsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
-    name_contains: Annotated[
-        str | None, Field(description='Filter to lists whose name contains this string')
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
     ] = None
-    pagination: pagination_request.PaginationRequest | None = None
     principal: Annotated[
         str | None, Field(description='Filter to lists owned by this principal')
     ] = None
+    name_contains: Annotated[
+        str | None, Field(description='Filter to lists whose name contains this string')
+    ] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/list_property_lists_response.py b/src/adcp/types/generated_poc/property/list_property_lists_response.py
index 3f32dc4b2..bedc70d4a 100644
--- a/src/adcp/types/generated_poc/property/list_property_lists_response.py
+++ b/src/adcp/types/generated_poc/property/list_property_lists_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/list_property_lists_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 from ..core import pagination_response
 from . import property_list
@@ -18,9 +19,10 @@ class ListPropertyListsResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    ext: ext_1.ExtensionObject | None = None
     lists: Annotated[
         list[property_list.PropertyList],
         Field(description='Array of property lists (metadata only, not resolved properties)'),
     ]
     pagination: pagination_response.PaginationResponse | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/property_error.py b/src/adcp/types/generated_poc/property/property_error.py
index 61796cedc..7b384b658 100644
--- a/src/adcp/types/generated_poc/property/property_error.py
+++ b/src/adcp/types/generated_poc/property/property_error.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/property_error.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -27,7 +27,7 @@ class PropertyError(AdCPBaseModel):
         extra='forbid',
     )
     code: Annotated[Code, Field(description='Error code')]
-    message: Annotated[str, Field(description='Human-readable error message')]
     property: Annotated[
         property_1.Property | None, Field(description='The property that caused the error')
     ] = None
+    message: Annotated[str, Field(description='Human-readable error message')]
diff --git a/src/adcp/types/generated_poc/property/property_feature.py b/src/adcp/types/generated_poc/property/property_feature.py
index 9ec54ff1c..f4b00f1be 100644
--- a/src/adcp/types/generated_poc/property/property_feature.py
+++ b/src/adcp/types/generated_poc/property/property_feature.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/property_feature.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -15,8 +15,8 @@ class PropertyFeature(AdCPBaseModel):
         extra='forbid',
     )
     feature_id: Annotated[str, Field(description='Identifier for the feature being assessed')]
+    value: Annotated[str, Field(description='The feature value')]
     source: Annotated[
         str | None,
         Field(description='Source of the feature data (e.g., app_store_privacy_label, tcf_string)'),
     ] = None
-    value: Annotated[str, Field(description='The feature value')]
diff --git a/src/adcp/types/generated_poc/property/property_feature_definition.py b/src/adcp/types/generated_poc/property/property_feature_definition.py
index 3fb34fa21..3364e0b86 100644
--- a/src/adcp/types/generated_poc/property/property_feature_definition.py
+++ b/src/adcp/types/generated_poc/property/property_feature_definition.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/property_feature_definition.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -13,68 +13,68 @@
 from ..core import ext as ext_1
 
 
-class Coverage(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    countries: Annotated[
-        list[str] | None, Field(description='Countries where this feature is available')
-    ] = None
-    property_types: Annotated[
-        list[str] | None, Field(description='Property types this feature applies to')
-    ] = None
+class Type(Enum):
+    binary = 'binary'
+    quantitative = 'quantitative'
+    categorical = 'categorical'
 
 
 class Range(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    max: Annotated[float, Field(description='Maximum value')]
     min: Annotated[float, Field(description='Minimum value')]
+    max: Annotated[float, Field(description='Maximum value')]
 
 
-class Type(Enum):
-    binary = 'binary'
-    quantitative = 'quantitative'
-    categorical = 'categorical'
+class Coverage(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    property_types: Annotated[
+        list[str] | None, Field(description='Property types this feature applies to')
+    ] = None
+    countries: Annotated[
+        list[str] | None, Field(description='Countries where this feature is available')
+    ] = None
 
 
 class PropertyFeatureDefinition(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    allowed_values: Annotated[
-        list[str] | None, Field(description='For categorical features, the set of valid values')
-    ] = None
-    coverage: Annotated[
-        Coverage | None, Field(description='What this feature covers (empty arrays = all)')
-    ] = None
-    description: Annotated[
-        str | None, Field(description='Description of what this feature measures or represents')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     feature_id: Annotated[
         str,
         Field(
             description="Unique identifier for this feature (e.g., 'consent_quality', 'carbon_score'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:us_coppa', 'registry:uk_hfss'). Unprefixed feature IDs are agent-defined."
         ),
     ]
-    methodology_url: Annotated[
-        AnyUrl,
+    name: Annotated[str, Field(description='Human-readable name for the feature')]
+    description: Annotated[
+        str | None, Field(description='Description of what this feature measures or represents')
+    ] = None
+    type: Annotated[
+        Type,
         Field(
-            description='URL to documentation explaining how this feature is calculated/measured'
+            description='The type of values this feature produces: binary (true/false), quantitative (numeric range), categorical (enumerated values)'
         ),
     ]
-    methodology_version: Annotated[
-        str | None, Field(description='Version identifier for the methodology (for audit trails)')
-    ] = None
-    name: Annotated[str, Field(description='Human-readable name for the feature')]
     range: Annotated[
         Range | None, Field(description='For quantitative features, the valid range of values')
     ] = None
-    type: Annotated[
-        Type,
+    allowed_values: Annotated[
+        list[str] | None, Field(description='For categorical features, the set of valid values')
+    ] = None
+    coverage: Annotated[
+        Coverage | None, Field(description='What this feature covers (empty arrays = all)')
+    ] = None
+    methodology_url: Annotated[
+        AnyUrl,
         Field(
-            description='The type of values this feature produces: binary (true/false), quantitative (numeric range), categorical (enumerated values)'
+            description='URL to documentation explaining how this feature is calculated/measured'
         ),
     ]
+    methodology_version: Annotated[
+        str | None, Field(description='Version identifier for the methodology (for audit trails)')
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/property_feature_result.py b/src/adcp/types/generated_poc/property/property_feature_result.py
new file mode 100644
index 000000000..fc87998c4
--- /dev/null
+++ b/src/adcp/types/generated_poc/property/property_feature_result.py
@@ -0,0 +1,45 @@
+# generated by datamodel-codegen:
+#   filename:  property/property_feature_result.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..core import ext as ext_1
+from ..core import property_id
+from . import property_feature_value
+
+
+class CoverageStatus(Enum):
+    covered = 'covered'
+    not_covered = 'not_covered'
+    pending = 'pending'
+
+
+class PropertyFeatureResult(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    property: Annotated[
+        str | property_id.PropertyId, Field(description='The property these features apply to')
+    ]
+    features: Annotated[
+        dict[str, property_feature_value.PropertyFeatureValue] | None,
+        Field(description='Map of feature_id to feature value'),
+    ] = None
+    coverage_status: Annotated[
+        CoverageStatus,
+        Field(
+            description='Whether this property is covered by this governance agent: covered (has data), not_covered (not measured), pending (measurement in progress)'
+        ),
+    ]
+    last_evaluated: Annotated[
+        AwareDatetime | None,
+        Field(description='When features were last evaluated for this property'),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/property_feature_value.py b/src/adcp/types/generated_poc/property/property_feature_value.py
new file mode 100644
index 000000000..55aa63479
--- /dev/null
+++ b/src/adcp/types/generated_poc/property/property_feature_value.py
@@ -0,0 +1,50 @@
+# generated by datamodel-codegen:
+#   filename:  property/property_feature_value.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..core import ext as ext_1
+
+
+class PropertyFeatureValue(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    value: Annotated[
+        bool | float | str,
+        Field(
+            description='The feature value. Type depends on feature definition: boolean for binary, number for quantitative, string for categorical.'
+        ),
+    ]
+    unit: Annotated[
+        str | None,
+        Field(
+            description="Unit of measurement for quantitative values (e.g., 'gCO2e/1000_impressions', 'percentage')"
+        ),
+    ] = None
+    confidence: Annotated[
+        float | None, Field(description='Confidence score for this value (0-1)', ge=0.0, le=1.0)
+    ] = None
+    measured_at: Annotated[
+        AwareDatetime | None, Field(description='When this specific value was measured')
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this certification/value expires (for time-limited certifications)'
+        ),
+    ] = None
+    methodology_version: Annotated[
+        str | None, Field(description='Version of the methodology used to calculate this value')
+    ] = None
+    details: Annotated[
+        dict[str, Any] | None,
+        Field(description='Additional vendor-specific details about this measurement'),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/property_list.py b/src/adcp/types/generated_poc/property/property_list.py
index bab34084e..a0fd7747b 100644
--- a/src/adcp/types/generated_poc/property/property_list.py
+++ b/src/adcp/types/generated_poc/property/property_list.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/property_list.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,7 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
-from ..core import brand_ref
+from ..core import brand_ref, vendor_pricing_option
 from . import base_property_source, property_list_filters
 
 
@@ -17,18 +17,34 @@ class PropertyList(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    list_id: Annotated[str, Field(description='Unique identifier for this property list')]
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    principal: Annotated[
+        str | None, Field(description='Principal identity that owns this list')
+    ] = None
     base_properties: Annotated[
         list[base_property_source.BasePropertySource] | None,
         Field(
             description="Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database."
         ),
     ] = None
+    filters: Annotated[
+        property_list_filters.PropertyListFilters | None,
+        Field(description='Dynamic filters applied when resolving the list'),
+    ] = None
     brand: Annotated[
         brand_ref.BrandReference | None,
         Field(
             description='Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.'
         ),
     ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to receive notifications when the resolved list changes'),
+    ] = None
     cache_duration_hours: Annotated[
         int | None,
         Field(
@@ -39,26 +55,17 @@ class PropertyList(AdCPBaseModel):
     created_at: Annotated[AwareDatetime | None, Field(description='When the list was created')] = (
         None
     )
-    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
-        None
-    )
-    filters: Annotated[
-        property_list_filters.PropertyListFilters | None,
-        Field(description='Dynamic filters applied when resolving the list'),
-    ] = None
-    list_id: Annotated[str, Field(description='Unique identifier for this property list')]
-    name: Annotated[str, Field(description='Human-readable name for the list')]
-    principal: Annotated[
-        str | None, Field(description='Principal identity that owns this list')
+    updated_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was last modified')
     ] = None
     property_count: Annotated[
         int | None,
         Field(description='Number of properties in the resolved list (at time of last resolution)'),
     ] = None
-    updated_at: Annotated[
-        AwareDatetime | None, Field(description='When the list was last modified')
-    ] = None
-    webhook_url: Annotated[
-        AnyUrl | None,
-        Field(description='URL to receive notifications when the resolved list changes'),
+    pricing_options: Annotated[
+        list[vendor_pricing_option.VendorPricingOption] | None,
+        Field(
+            description='Pricing options for this property list. Present when the requesting account has a billing relationship with the list provider. The buyer passes the selected pricing_option_id in report_usage.',
+            min_length=1,
+        ),
     ] = None
diff --git a/src/adcp/types/generated_poc/property/property_list_changed_webhook.py b/src/adcp/types/generated_poc/property/property_list_changed_webhook.py
index 44ca5d368..204162848 100644
--- a/src/adcp/types/generated_poc/property/property_list_changed_webhook.py
+++ b/src/adcp/types/generated_poc/property/property_list_changed_webhook.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/property_list_changed_webhook.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -31,21 +31,21 @@ class PropertyListChangedWebhook(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    cache_valid_until: Annotated[
-        AwareDatetime | None,
-        Field(description='When the consumer should refresh from the governance agent'),
-    ] = None
-    change_summary: Annotated[
-        ChangeSummary | None, Field(description='Summary of changes to the resolved list')
-    ] = None
     event: Annotated[Literal['property_list_changed'], Field(description='The event type')]
-    ext: ext_1.ExtensionObject | None = None
     list_id: Annotated[str, Field(description='ID of the property list that changed')]
     list_name: Annotated[str | None, Field(description='Name of the property list')] = None
+    change_summary: Annotated[
+        ChangeSummary | None, Field(description='Summary of changes to the resolved list')
+    ] = None
     resolved_at: Annotated[AwareDatetime, Field(description='When the list was re-resolved')]
+    cache_valid_until: Annotated[
+        AwareDatetime | None,
+        Field(description='When the consumer should refresh from the governance agent'),
+    ] = None
     signature: Annotated[
         str,
         Field(
             description="Cryptographic signature of the webhook payload, signed with the agent's private key. Recipients MUST verify this signature."
         ),
     ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/property_list_filters.py b/src/adcp/types/generated_poc/property/property_list_filters.py
index 65c385938..c58a38ec1 100644
--- a/src/adcp/types/generated_poc/property/property_list_filters.py
+++ b/src/adcp/types/generated_poc/property/property_list_filters.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/property_list_filters.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,9 +9,8 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field, RootModel
 
-from ..core import identifier
+from ..core import feature_requirement, identifier
 from ..enums import channels, property_type
-from . import feature_requirement
 
 
 class CountriesAllItem(RootModel[str]):
@@ -22,23 +21,23 @@ class PropertyListFilters(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    channels_any: Annotated[
-        list[channels.MediaChannel] | None,
+    countries_all: Annotated[
+        list[CountriesAllItem] | None,
         Field(
-            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
+            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
             min_length=1,
         ),
     ] = None
-    countries_all: Annotated[
-        list[CountriesAllItem] | None,
+    channels_any: Annotated[
+        list[channels.MediaChannel] | None,
         Field(
-            description='Property must have feature data for ALL listed countries (ISO codes). When omitted, no country restriction is applied.',
+            description='Property must support ANY of the listed channels. When omitted, no channel restriction is applied.',
             min_length=1,
         ),
     ] = None
-    exclude_identifiers: Annotated[
-        list[identifier.Identifier] | None,
-        Field(description='Identifiers to always exclude from results', min_length=1),
+    property_types: Annotated[
+        list[property_type.PropertyType] | None,
+        Field(description='Filter to these property types', min_length=1),
     ] = None
     feature_requirements: Annotated[
         list[feature_requirement.FeatureRequirement] | None,
@@ -47,7 +46,7 @@ class PropertyListFilters(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    property_types: Annotated[
-        list[property_type.PropertyType] | None,
-        Field(description='Filter to these property types', min_length=1),
+    exclude_identifiers: Annotated[
+        list[identifier.Identifier] | None,
+        Field(description='Identifiers to always exclude from results', min_length=1),
     ] = None
diff --git a/src/adcp/types/generated_poc/property/update_property_list_request.py b/src/adcp/types/generated_poc/property/update_property_list_request.py
index 7edf83b36..05425a2f9 100644
--- a/src/adcp/types/generated_poc/property/update_property_list_request.py
+++ b/src/adcp/types/generated_poc/property/update_property_list_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/update_property_list_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -19,38 +19,47 @@ class UpdatePropertyListRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to update')]
+    name: Annotated[str | None, Field(description='New name for the list')] = None
+    description: Annotated[str | None, Field(description='New description')] = None
     base_properties: Annotated[
         list[base_property_source.BasePropertySource] | None,
         Field(
             description='Complete replacement for the base properties list (not a patch). Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers).'
         ),
     ] = None
+    filters: Annotated[
+        property_list_filters.PropertyListFilters | None,
+        Field(description='Complete replacement for the filters (not a patch)'),
+    ] = None
     brand: Annotated[
         brand_ref.BrandReference | None,
         Field(
             description='Update brand reference. Resolved to full brand identity at execution time.'
         ),
     ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Update the webhook URL for list change notifications (set to empty string to remove)'
+        ),
+    ] = None
     context: context_1.ContextObject | None = None
-    description: Annotated[str | None, Field(description='New description')] = None
     ext: ext_1.ExtensionObject | None = None
-    filters: Annotated[
-        property_list_filters.PropertyListFilters | None,
-        Field(description='Complete replacement for the filters (not a patch)'),
-    ] = None
     idempotency_key: Annotated[
-        str | None,
+        str,
         Field(
             description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
             max_length=255,
             min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
-    list_id: Annotated[str, Field(description='ID of the property list to update')]
-    name: Annotated[str | None, Field(description='New name for the list')] = None
-    webhook_url: Annotated[
-        AnyUrl | None,
-        Field(
-            description='Update the webhook URL for list change notifications (set to empty string to remove)'
-        ),
-    ] = None
+    ]
diff --git a/src/adcp/types/generated_poc/property/update_property_list_response.py b/src/adcp/types/generated_poc/property/update_property_list_response.py
index e8374ee74..21f1eaeef 100644
--- a/src/adcp/types/generated_poc/property/update_property_list_response.py
+++ b/src/adcp/types/generated_poc/property/update_property_list_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  property/update_property_list_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 from . import property_list
 
@@ -17,5 +18,6 @@ class UpdatePropertyListResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    ext: ext_1.ExtensionObject | None = None
     list: Annotated[property_list.PropertyList, Field(description='The updated property list')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/validate_property_delivery_request.py b/src/adcp/types/generated_poc/property/validate_property_delivery_request.py
new file mode 100644
index 000000000..22c10a6a2
--- /dev/null
+++ b/src/adcp/types/generated_poc/property/validate_property_delivery_request.py
@@ -0,0 +1,45 @@
+# generated by datamodel-codegen:
+#   filename:  property/validate_property_delivery_request.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+from . import delivery_record
+
+
+class ValidatePropertyDeliveryRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the property list to validate against')]
+    records: Annotated[
+        list[delivery_record.DeliveryRecord],
+        Field(
+            description='Delivery records to validate. Each record represents impressions delivered to a property identifier.',
+            max_length=10000,
+            min_length=1,
+        ),
+    ]
+    include_compliant: Annotated[
+        bool | None,
+        Field(
+            description='Include compliant records in results (default: only return non_compliant, unmodeled, and unidentified)'
+        ),
+    ] = False
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/validate_property_delivery_response.py b/src/adcp/types/generated_poc/property/validate_property_delivery_response.py
new file mode 100644
index 000000000..3e92b2b99
--- /dev/null
+++ b/src/adcp/types/generated_poc/property/validate_property_delivery_response.py
@@ -0,0 +1,132 @@
+# generated by datamodel-codegen:
+#   filename:  property/validate_property_delivery_response.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+from . import validation_result
+
+
+class Summary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    total_records: Annotated[int, Field(description='Total number of records validated')]
+    total_impressions: Annotated[int, Field(description='Total impressions across all records')]
+    compliant_records: Annotated[int, Field(description='Number of records with compliant status')]
+    compliant_impressions: Annotated[int, Field(description='Impressions from compliant records')]
+    non_compliant_records: Annotated[
+        int, Field(description='Number of records with non_compliant status')
+    ]
+    non_compliant_impressions: Annotated[
+        int, Field(description='Impressions from non_compliant records')
+    ]
+    not_covered_records: Annotated[
+        int,
+        Field(
+            description='Number of records where identifier was recognized but no data available'
+        ),
+    ]
+    not_covered_impressions: Annotated[
+        int, Field(description='Impressions from not_covered records')
+    ]
+    unidentified_records: Annotated[
+        int, Field(description='Number of records where identifier type was not resolvable')
+    ]
+    unidentified_impressions: Annotated[
+        int, Field(description='Impressions from unidentified records')
+    ]
+
+
+class Aggregate(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    score: Annotated[
+        float | None, Field(description='Numeric score (0-100 scale typical, but agent-defined)')
+    ] = None
+    grade: Annotated[
+        str | None,
+        Field(description="Letter grade or category (e.g., 'A+', 'B-', 'Gold', 'Compliant')"),
+    ] = None
+    label: Annotated[
+        str | None,
+        Field(description="Human-readable summary (e.g., '85% compliant', 'High quality')"),
+    ] = None
+    methodology_url: Annotated[
+        AnyUrl | None, Field(description='URL explaining how this aggregate was calculated')
+    ] = None
+
+
+class AuthorizationSummary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    records_checked: Annotated[
+        int, Field(description='Number of records with sales_agent_url provided')
+    ]
+    impressions_checked: Annotated[
+        int, Field(description='Total impressions from records with sales_agent_url')
+    ]
+    authorized_records: Annotated[
+        int, Field(description='Number of records where sales agent was authorized')
+    ]
+    authorized_impressions: Annotated[int, Field(description='Impressions from authorized records')]
+    unauthorized_records: Annotated[
+        int, Field(description='Number of records where sales agent was NOT authorized')
+    ]
+    unauthorized_impressions: Annotated[
+        int, Field(description='Impressions from unauthorized records')
+    ]
+    unknown_records: Annotated[
+        int,
+        Field(
+            description='Number of records where authorization could not be determined (adagents.json unavailable)'
+        ),
+    ]
+    unknown_impressions: Annotated[
+        int,
+        Field(description='Impressions from records where authorization could not be determined'),
+    ]
+
+
+class ValidatePropertyDeliveryResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list_id: Annotated[str, Field(description='ID of the property list validated against')]
+    summary: Annotated[Summary, Field(description='Aggregate validation statistics')]
+    aggregate: Annotated[
+        Aggregate | None,
+        Field(
+            description='Optional aggregate measurements computed by the governance agent. Format and meaning are agent-specific.'
+        ),
+    ] = None
+    authorization_summary: Annotated[
+        AuthorizationSummary | None,
+        Field(
+            description='Aggregate authorization statistics. Only present if any records included sales_agent_url.'
+        ),
+    ] = None
+    results: Annotated[
+        list[validation_result.ValidationResult],
+        Field(
+            description='Per-record validation results. By default only includes non_compliant and unknown records. Set include_compliant=true to include all records.'
+        ),
+    ]
+    validated_at: Annotated[
+        AwareDatetime, Field(description='Timestamp when validation was performed')
+    ]
+    list_resolved_at: Annotated[
+        AwareDatetime | None,
+        Field(description='Timestamp of the property list resolution used for validation'),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/property/validation_result.py b/src/adcp/types/generated_poc/property/validation_result.py
new file mode 100644
index 000000000..71afe86eb
--- /dev/null
+++ b/src/adcp/types/generated_poc/property/validation_result.py
@@ -0,0 +1,108 @@
+# generated by datamodel-codegen:
+#   filename:  property/validation_result.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated, Any
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import ext as ext_1
+from ..core import identifier as identifier_1
+from . import authorization_result
+
+
+class Status(Enum):
+    compliant = 'compliant'
+    non_compliant = 'non_compliant'
+    not_covered = 'not_covered'
+    unidentified = 'unidentified'
+
+
+class Status51(Enum):
+    passed = 'passed'
+    failed = 'failed'
+    warning = 'warning'
+    unevaluated = 'unevaluated'
+
+
+class Requirement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min_value: Annotated[float | None, Field(description='Minimum value that was required')] = None
+    max_value: Annotated[float | None, Field(description='Maximum value that was allowed')] = None
+    allowed_values: Annotated[
+        list[Any] | None, Field(description='Values that would have been acceptable')
+    ] = None
+
+
+class Feature(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    feature_id: Annotated[
+        str,
+        Field(
+            description="Which feature was evaluated. Data features come from the governance agent's feature catalog (e.g., 'mfa_score', 'carbon_score'). Record-level structural checks use reserved namespaces: 'record:list_membership', 'record:excluded', 'delivery:seller_authorization', 'delivery:click_url_presence'. Reserved prefixes: 'record:', 'delivery:'."
+        ),
+    ]
+    status: Status51
+    policy_id: Annotated[
+        str | None,
+        Field(
+            description='Registry policy ID that triggered this result. Enables programmatic routing by looking up the policy in the registry.'
+        ),
+    ] = None
+    explanation: Annotated[
+        str | None, Field(description='Directional human-readable explanation of the result.')
+    ] = None
+    requirement: Annotated[
+        Requirement | None,
+        Field(
+            description='The feature requirement that was not met. MAY be present on failed features when the caller authored the requirement (e.g., feature_requirements on a property list). The buyer set these thresholds — echoing them back enables fix-and-retry loops without looking up the list definition.'
+        ),
+    ] = None
+    confidence: Annotated[
+        float | None,
+        Field(
+            description='Optional evaluator confidence in this result (0-1). Distinguishes certain verdicts from ambiguous ones.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+
+
+class ValidationResult(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    identifier: Annotated[
+        identifier_1.Identifier, Field(description='The identifier that was validated')
+    ]
+    record_id: Annotated[
+        str | None, Field(description='Client-provided ID from the delivery record (if provided)')
+    ] = None
+    status: Annotated[
+        Status,
+        Field(
+            description='Validation status: compliant (in list), non_compliant (not in list), not_covered (identifier recognized but no data available), unidentified (identifier type not resolvable by this governance agent)'
+        ),
+    ]
+    impressions: Annotated[int, Field(description='Number of impressions from this record', ge=0)]
+    features: Annotated[
+        list[Feature] | None,
+        Field(
+            description='Per-feature breakdown for this record. SHOULD include all failed and warning features. MAY include passed features. For property validation the buyer authored the requirement, so the `requirement` that was not met MAY be echoed back on failures — this is contract data, not evaluator IP.'
+        ),
+    ] = None
+    authorization: Annotated[
+        authorization_result.AuthorizationResult | None,
+        Field(
+            description='Authorization validation result (only present if sales_agent_url was provided in the delivery record)'
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_request.py b/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_request.py
index 3582733d8..74126477d 100644
--- a/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_request.py
+++ b/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  protocol/get_adcp_capabilities_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -26,8 +26,14 @@ class GetAdcpCapabilitiesRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. When provided, the seller validates this against its supported major_versions and returns VERSION_UNSUPPORTED if the version is not in range. When omitted, the seller assumes the highest major version it supports.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     protocols: Annotated[
         list[Protocol] | None,
         Field(
@@ -35,3 +41,5 @@ class GetAdcpCapabilitiesRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_response.py b/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_response.py
index d7171524f..81d73f127 100644
--- a/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_response.py
+++ b/src/adcp/types/generated_poc/protocol/get_adcp_capabilities_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  protocol/get_adcp_capabilities_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T21:01:10+00:00
 
 from __future__ import annotations
 
@@ -14,281 +14,172 @@
 from ..core import duration, error
 from ..core import ext as ext_1
 from ..core import media_buy_features
-from ..enums import action_source, age_verification_method, channels
+from ..enums import action_source, age_verification_method, channels, cloud_storage_protocol
 from ..enums import event_type as event_type_1
-from ..enums import pricing_model, right_type, right_use, transport_mode, uid_type
+from ..enums import pricing_model, right_type, right_use, specialism, transport_mode, uid_type
 from ..sponsored_intelligence import si_capabilities
 
 
-class SupportedBillingEnum(Enum):
-    operator = 'operator'
-    agent = 'agent'
-    advertiser = 'advertiser'
+class MajorVersion(RootModel[int]):
+    root: Annotated[int, Field(ge=1)]
 
 
-class Account(AdCPBaseModel):
-    account_financials: Annotated[
-        bool | None,
-        Field(
-            description='Whether this seller supports the get_account_financials task for querying account-level financial status (spend, credit, invoices). Only applicable to operator-billed accounts.'
-        ),
-    ] = False
-    authorization_endpoint: Annotated[
-        AnyUrl | None,
-        Field(
-            description='OAuth authorization endpoint for obtaining operator-level credentials. Present when the seller supports OAuth for operator authentication. The agent directs the operator to this URL to authenticate and obtain a bearer token. If absent and require_operator_auth is true, operators obtain credentials out-of-band (e.g., seller portal, API key).'
-        ),
-    ] = None
-    require_operator_auth: Annotated[
-        bool | None,
-        Field(
-            description="Whether the seller requires operator-level credentials. When true (explicit accounts), operators authenticate independently with the seller and the buyer discovers accounts via list_accounts. When false (default, implicit accounts), the seller trusts the agent's identity claims — the agent authenticates once and declares brands/operators via sync_accounts."
-        ),
-    ] = False
-    required_for_products: Annotated[
-        bool | None,
-        Field(
-            description='Whether an account reference is required for get_products. When true, the buyer must establish an account before browsing products. When false (default), the buyer can browse products without an account — useful for price comparison and discovery before committing to a seller.'
-        ),
-    ] = False
-    sandbox: Annotated[
-        bool | None,
-        Field(
-            description='Whether this seller supports sandbox accounts for testing. Buyers can provision a sandbox account via sync_accounts with sandbox: true, and all requests using that account_id will be treated as sandbox — no real platform calls or spend.'
-        ),
-    ] = False
-    supported_billing: Annotated[
-        list[SupportedBillingEnum],
+class Idempotency(AdCPBaseModel):
+    replay_ttl_seconds: Annotated[
+        int,
         Field(
-            description='Billing models this seller supports. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The buyer must pass one of these values in sync_accounts.',
-            min_length=1,
+            description="How long the seller retains a canonical response for an idempotency_key. Within this window, a replay with the same key + equivalent canonical payload returns the cached response; a replay with a different canonical payload returns IDEMPOTENCY_CONFLICT; a replay past the window returns IDEMPOTENCY_EXPIRED when the seller can still distinguish 'seen and evicted' from 'never seen'. Minimum 3600 (1h); recommended 86400 (24h). Maximum 604800 (7 days) — longer windows force buyers to retain secret keys at rest for extended periods and grow the seller's cache table without bounded benefit.",
+            ge=3600,
+            le=604800,
         ),
     ]
 
 
-class MajorVersion(RootModel[int]):
-    root: Annotated[int, Field(ge=1)]
-
-
 class Adcp(AdCPBaseModel):
     major_versions: Annotated[
         list[MajorVersion],
         Field(
-            description='AdCP major versions supported by this seller. Major versions indicate breaking changes. When multiple versions are listed, the buyer declares its version during the capabilities handshake or via the adcp_version field on requests.',
+            description='AdCP major versions supported by this seller. Major versions indicate breaking changes. When multiple versions are listed, the buyer declares its version via the adcp_major_version field on requests.',
             min_length=1,
         ),
     ]
-
-
-class Creative(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    has_creative_library: Annotated[
-        bool | None,
-        Field(
-            description='When true, this agent hosts a creative library and supports list_creatives and creative_id references in build_creative. Creative agents with a library should also implement the accounts protocol (sync_accounts / list_accounts) so buyers can establish access.'
-        ),
-    ] = False
-    supports_compliance: Annotated[
-        bool | None,
-        Field(
-            description='When true, this creative agent can process briefs with compliance requirements (required_disclosures, prohibited_claims) and will validate that disclosures can be satisfied by the target format.'
-        ),
-    ] = None
-    supports_generation: Annotated[
-        bool | None,
-        Field(
-            description='When true, this agent can generate creatives from natural language briefs via build_creative. The buyer provides a message with creative direction, and the agent produces a manifest with generated assets. When false, build_creative only supports transformation or library retrieval.'
-        ),
-    ] = False
-    supports_transformation: Annotated[
-        bool | None,
+    idempotency: Annotated[
+        Idempotency,
         Field(
-            description='When true, this agent can transform or resize existing manifests via build_creative. The buyer provides a creative_manifest and a target_format_id, and the agent adapts the creative to the new format.'
-        ),
-    ] = False
-
-
-class ExtensionsSupportedItem(RootModel[str]):
-    root: Annotated[
-        str,
-        Field(
-            description="Extension namespace (lowercase alphanumeric with underscores, e.g., 'scope3', 'garm', 'iab_tcf')",
-            pattern='^[a-z][a-z0-9_]*$',
+            description='Idempotency semantics for mutating requests. Sellers MUST declare their replay window so buyers can reason about safe retry behavior. Clients MUST NOT assume a default — a seller without this declaration is non-compliant and should be treated as unsafe for retry-sensitive operations.'
         ),
     ]
 
 
-class Range(AdCPBaseModel):
-    max: Annotated[float, Field(description='Maximum value')]
-    min: Annotated[float, Field(description='Minimum value')]
+class SupportedProtocol(Enum):
+    media_buy = 'media_buy'
+    signals = 'signals'
+    governance = 'governance'
+    sponsored_intelligence = 'sponsored_intelligence'
+    creative = 'creative'
+    brand = 'brand'
 
 
-class Type(Enum):
-    binary = 'binary'
-    quantitative = 'quantitative'
-    categorical = 'categorical'
+class SupportedBillingEnum(Enum):
+    operator = 'operator'
+    agent = 'agent'
+    advertiser = 'advertiser'
 
 
-class CreativeFeature(AdCPBaseModel):
-    categories: Annotated[
-        list[str] | None, Field(description='For categorical features, the valid values')
-    ] = None
-    description: Annotated[
-        str | None, Field(description='Human-readable description of what this feature measures')
-    ] = None
-    feature_id: Annotated[
-        str,
+class Account(AdCPBaseModel):
+    require_operator_auth: Annotated[
+        bool | None,
         Field(
-            description="Unique identifier for this feature (e.g., 'auto_redirect', 'brand_consistency', 'iab_casinos_gambling')"
+            description="Whether the seller requires operator-level credentials. When true (explicit accounts), operators authenticate independently with the seller and the buyer discovers accounts via list_accounts. When false (default, implicit accounts), the seller trusts the agent's identity claims — the agent authenticates once and declares brands/operators via sync_accounts."
         ),
-    ]
-    methodology_url: Annotated[
+    ] = False
+    authorization_endpoint: Annotated[
         AnyUrl | None,
         Field(
-            description='URL to documentation explaining how this feature is calculated or measured.'
-        ),
-    ] = None
-    range: Annotated[
-        Range | None, Field(description='For quantitative features, the valid range')
-    ] = None
-    type: Annotated[
-        Type,
-        Field(
-            description="Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+            description='OAuth authorization endpoint for obtaining operator-level credentials. Present when the seller supports OAuth for operator authentication. The agent directs the operator to this URL to authenticate and obtain a bearer token. If absent and require_operator_auth is true, operators obtain credentials out-of-band (e.g., seller portal, API key).'
         ),
-    ]
-
-
-class PropertyFeature(AdCPBaseModel):
-    categories: Annotated[
-        list[str] | None, Field(description='For categorical features, the valid values')
-    ] = None
-    description: Annotated[
-        str | None, Field(description='Human-readable description of what this feature measures')
     ] = None
-    feature_id: Annotated[
-        str,
+    supported_billing: Annotated[
+        list[SupportedBillingEnum],
         Field(
-            description="Unique identifier for this feature (e.g., 'consent_quality', 'coppa_certified', 'carbon_score')"
+            description='Billing models this seller supports. operator: seller invoices the operator (agency or brand buying direct). agent: agent consolidates billing. advertiser: seller invoices the advertiser directly, even when a different operator places orders on their behalf. The buyer must pass one of these values in sync_accounts.',
+            min_length=1,
         ),
     ]
-    methodology_url: Annotated[
-        AnyUrl | None,
-        Field(
-            description='URL to documentation explaining how this feature is calculated or measured. Helps buyers understand and compare methodologies across vendors.'
-        ),
-    ] = None
-    range: Annotated[
-        Range | None, Field(description='For quantitative features, the valid range')
-    ] = None
-    type: Annotated[
-        Type,
+    required_for_products: Annotated[
+        bool | None,
         Field(
-            description="Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
+            description='Whether an account reference is required for get_products. When true, the buyer must establish an account before browsing products. When false (default), the buyer can browse products without an account — useful for price comparison and discovery before committing to a seller.'
         ),
-    ]
-
-
-class Governance(AdCPBaseModel):
-    creative_features: Annotated[
-        list[CreativeFeature] | None,
+    ] = False
+    account_financials: Annotated[
+        bool | None,
         Field(
-            description='Creative features this governance agent can evaluate. Each feature describes a score, rating, or assessment the agent can provide for creatives (e.g., security scanning, creative quality, content categorization).'
+            description='Whether this seller supports the get_account_financials task for querying account-level financial status (spend, credit, invoices). Only applicable to operator-billed accounts.'
         ),
-    ] = None
-    property_features: Annotated[
-        list[PropertyFeature] | None,
+    ] = False
+    sandbox: Annotated[
+        bool | None,
         Field(
-            description='Property features this governance agent can evaluate. Each feature describes a score, rating, or certification the agent can provide for properties.'
+            description='Whether this seller supports sandbox accounts for testing. Buyers can provision a sandbox account via sync_accounts with sandbox: true, and all requests using that account_id will be treated as sandbox — no real platform calls or spend.'
         ),
-    ] = None
-
-
-class MatchingLatencyHours(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='forbid',
-    )
-    max: Annotated[int | None, Field(ge=0)] = None
-    min: Annotated[int | None, Field(ge=0)] = None
+    ] = False
 
 
-class SupportedIdentifierType(Enum):
-    hashed_email = 'hashed_email'
-    hashed_phone = 'hashed_phone'
+class ReportingDeliveryMethod(Enum):
+    webhook = 'webhook'
+    offline = 'offline'
 
 
-class ContentStandardsDetail(AdCPBaseModel):
-    supported_channels: Annotated[
-        list[channels.MediaChannel] | None,
-        Field(
-            description='Channels for which the seller can provide content artifacts. Helps buyers understand which parts of a mixed-channel buy will have content standards coverage.',
-            min_length=1,
-        ),
-    ] = None
-    supports_local_evaluation: Annotated[
-        bool | None,
-        Field(
-            description="Whether the seller runs a local evaluation model. When false, all artifacts will have local_verdict: 'unevaluated' and the failures_only filter on get_media_buy_artifacts is not useful."
-        ),
-    ] = None
-    supports_webhook_delivery: Annotated[
-        bool | None,
-        Field(
-            description='Whether the seller supports push-based artifact delivery via artifact_webhook configured at buy creation time.'
-        ),
-    ] = None
+class Surface(Enum):
+    website = 'website'
+    mobile_app = 'mobile_app'
+    ctv_app = 'ctv_app'
+    desktop_app = 'desktop_app'
+    dooh = 'dooh'
+    podcast = 'podcast'
+    radio = 'radio'
+    streaming_audio = 'streaming_audio'
+    ai_assistant = 'ai_assistant'
 
 
-class AttributionWindow(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    event_type: Annotated[
-        event_type_1.EventType | None,
-        Field(description='Event type this window applies to, or omit for default window'),
-    ] = None
-    post_click: Annotated[
-        list[duration.Duration],
-        Field(
-            description='Available post-click attribution windows (e.g. [{"interval": 7, "unit": "days"}])',
-            min_length=1,
-        ),
-    ]
-    post_view: Annotated[
-        list[duration.Duration] | None,
-        Field(
-            description='Available post-view attribution windows (e.g. [{"interval": 1, "unit": "days"}])',
-            min_length=1,
-        ),
+class TrustedMatch(AdCPBaseModel):
+    surfaces: Annotated[
+        list[Surface] | None, Field(description='Surface types this seller supports via TMP.')
     ] = None
 
 
-class MraidVersion(RootModel[str]):
+class VastVersion(RootModel[str]):
     root: Annotated[str, Field(pattern='^[0-9]+\\.[0-9]+$')]
 
 
-class VastVersion(MraidVersion):
+class MraidVersion(VastVersion):
     pass
 
 
 class CreativeSpecs(AdCPBaseModel):
+    vast_versions: Annotated[
+        list[VastVersion] | None, Field(description='VAST versions supported for video creatives')
+    ] = None
     mraid_versions: Annotated[
         list[MraidVersion] | None,
         Field(description='MRAID versions supported for rich media mobile creatives'),
     ] = None
-    simid: Annotated[bool | None, Field(description='SIMID support for interactive video ads')] = (
+    vpaid: Annotated[bool | None, Field(description='VPAID support for interactive video ads')] = (
         None
     )
-    vast_versions: Annotated[
-        list[VastVersion] | None, Field(description='VAST versions supported for video creatives')
-    ] = None
-    vpaid: Annotated[bool | None, Field(description='VPAID support for interactive video ads')] = (
+    simid: Annotated[bool | None, Field(description='SIMID support for interactive video ads')] = (
         None
     )
 
 
+class GeoMetros(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    nielsen_dma: bool | None = None
+    uk_itl1: bool | None = None
+    uk_itl2: bool | None = None
+    eurostat_nuts2: bool | None = None
+
+
+class GeoPostalAreas(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    us_zip: bool | None = None
+    us_zip_plus_four: bool | None = None
+    gb_outward: bool | None = None
+    gb_full: bool | None = None
+    ca_fsa: bool | None = None
+    ca_full: bool | None = None
+    de_plz: bool | None = None
+    fr_code_postal: bool | None = None
+    au_postcode: bool | None = None
+    ch_plz: bool | None = None
+    at_plz: bool | None = None
+
+
 class AgeRestriction(AdCPBaseModel):
     supported: Annotated[
         bool | None, Field(description='Whether seller supports age restrictions')
@@ -299,50 +190,6 @@ class AgeRestriction(AdCPBaseModel):
     ] = None
 
 
-class GeoMetros(AdCPBaseModel):
-    eurostat_nuts2: Annotated[
-        bool | None, Field(description='Supports Eurostat NUTS Level 2 regions (EU)')
-    ] = None
-    nielsen_dma: Annotated[
-        bool | None,
-        Field(description="Supports Nielsen DMA codes (US market, e.g., '501' for NYC)"),
-    ] = None
-    uk_itl1: Annotated[bool | None, Field(description='Supports UK ITL Level 1 regions')] = None
-    uk_itl2: Annotated[bool | None, Field(description='Supports UK ITL Level 2 regions')] = None
-
-
-class GeoPostalAreas(AdCPBaseModel):
-    at_plz: Annotated[
-        bool | None, Field(description="Austrian Postleitzahl, 4 digits (e.g., '1010')")
-    ] = None
-    au_postcode: Annotated[
-        bool | None, Field(description="Australian postcode, 4 digits (e.g., '2000')")
-    ] = None
-    ca_fsa: Annotated[
-        bool | None, Field(description="Canadian Forward Sortation Area (e.g., 'K1A')")
-    ] = None
-    ca_full: Annotated[
-        bool | None, Field(description="Canadian full postal code (e.g., 'K1A 0B1')")
-    ] = None
-    ch_plz: Annotated[
-        bool | None, Field(description="Swiss Postleitzahl, 4 digits (e.g., '8000')")
-    ] = None
-    de_plz: Annotated[
-        bool | None, Field(description="German Postleitzahl, 5 digits (e.g., '10115')")
-    ] = None
-    fr_code_postal: Annotated[
-        bool | None, Field(description="French code postal, 5 digits (e.g., '75001')")
-    ] = None
-    gb_full: Annotated[bool | None, Field(description="UK full postcode (e.g., 'SW1A 1AA')")] = None
-    gb_outward: Annotated[
-        bool | None, Field(description="UK postcode district / outward code (e.g., 'SW1', 'EC1')")
-    ] = None
-    us_zip: Annotated[bool | None, Field(description="US 5-digit ZIP codes (e.g., '10001')")] = None
-    us_zip_plus_four: Annotated[
-        bool | None, Field(description="US 9-digit ZIP+4 codes (e.g., '10001-1234')")
-    ] = None
-
-
 class SupportedMatchType(Enum):
     broad = 'broad'
     phrase = 'phrase'
@@ -369,102 +216,104 @@ class NegativeKeywords(AdCPBaseModel):
     ]
 
 
-class Surface(Enum):
-    website = 'website'
-    mobile_app = 'mobile_app'
-    ctv_app = 'ctv_app'
-    desktop_app = 'desktop_app'
-    dooh = 'dooh'
-    podcast = 'podcast'
-    radio = 'radio'
-    streaming_audio = 'streaming_audio'
-    ai_assistant = 'ai_assistant'
-
-
-class TrustedMatch(AdCPBaseModel):
-    supported: Annotated[
-        bool | None, Field(description='Whether this seller has TMP infrastructure deployed.')
-    ] = False
-    surfaces: Annotated[
-        list[Surface] | None, Field(description='Surface types this seller supports via TMP.')
-    ] = None
+class SupportedIdentifierType(Enum):
+    hashed_email = 'hashed_email'
+    hashed_phone = 'hashed_phone'
 
 
-class PrimaryCountry(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+class MatchingLatencyHours(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    min: Annotated[int | None, Field(ge=0)] = None
+    max: Annotated[int | None, Field(ge=0)] = None
 
 
-class PublisherDomain(RootModel[str]):
-    root: Annotated[
-        str, Field(pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$')
+class AttributionWindow(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    event_type: Annotated[
+        event_type_1.EventType | None,
+        Field(description='Event type this window applies to, or omit for default window'),
+    ] = None
+    post_click: Annotated[
+        list[duration.Duration],
+        Field(
+            description='Available post-click attribution windows (e.g. [{"interval": 7, "unit": "days"}])',
+            min_length=1,
+        ),
     ]
-
-
-class Portfolio(AdCPBaseModel):
-    advertising_policies: Annotated[
-        str | None,
+    post_view: Annotated[
+        list[duration.Duration] | None,
         Field(
-            description='Advertising content policies, restrictions, and guidelines',
-            max_length=10000,
+            description='Available post-view attribution windows (e.g. [{"interval": 1, "unit": "days"}])',
+            min_length=1,
         ),
     ] = None
-    description: Annotated[
-        str | None,
+
+
+class ContentStandards(AdCPBaseModel):
+    supports_local_evaluation: Annotated[
+        bool | None,
         Field(
-            description='Markdown-formatted description of the inventory portfolio', max_length=5000
+            description="Whether the seller runs a local evaluation model. When false, all artifacts will have local_verdict: 'unevaluated' and the failures_only filter on get_media_buy_artifacts is not useful."
         ),
     ] = None
-    primary_channels: Annotated[
+    supported_channels: Annotated[
         list[channels.MediaChannel] | None,
-        Field(description='Primary advertising channels in this portfolio'),
-    ] = None
-    primary_countries: Annotated[
-        list[PrimaryCountry] | None,
-        Field(description='Primary countries (ISO 3166-1 alpha-2) where inventory is concentrated'),
-    ] = None
-    publisher_domains: Annotated[
-        list[PublisherDomain],
         Field(
-            description="Publisher domains this seller is authorized to represent. Buyers should fetch each publisher's adagents.json for property definitions.",
+            description='Channels for which the seller can provide content artifacts. Helps buyers understand which parts of a mixed-channel buy will have content standards coverage.',
             min_length=1,
         ),
+    ] = None
+    supports_webhook_delivery: Annotated[
+        bool | None,
+        Field(
+            description='Whether the seller supports push-based artifact delivery via artifact_webhook configured at buy creation time.'
+        ),
+    ] = None
+
+
+class PublisherDomain(RootModel[str]):
+    root: Annotated[
+        str, Field(pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$')
     ]
 
 
-class AvailableDimension(Enum):
-    geo = 'geo'
-    device_type = 'device_type'
-    device_platform = 'device_platform'
-    audience = 'audience'
-    placement = 'placement'
-    creative = 'creative'
-    keyword = 'keyword'
-    catalog_item = 'catalog_item'
+class PrimaryCountry(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
 
 
-class Reporting(AdCPBaseModel):
-    available_dimensions: Annotated[
-        list[AvailableDimension] | None,
+class Portfolio(AdCPBaseModel):
+    publisher_domains: Annotated[
+        list[PublisherDomain],
         Field(
-            description="Reporting dimensions available across the seller's portfolio. Individual products may support a subset. Dimensions geo, device_type, device_platform, audience, and placement are opt-in via reporting_dimensions on the delivery request. Dimensions creative, keyword, and catalog_item are included automatically when the seller supports them (not controlled by reporting_dimensions)."
+            description="Publisher domains this seller is authorized to represent. Buyers should fetch each publisher's adagents.json for property definitions.",
+            min_length=1,
         ),
+    ]
+    primary_channels: Annotated[
+        list[channels.MediaChannel] | None,
+        Field(description='Primary advertising channels in this portfolio'),
     ] = None
-    supports_daily_breakdown: Annotated[
-        bool | None,
+    primary_countries: Annotated[
+        list[PrimaryCountry] | None,
+        Field(description='Primary countries (ISO 3166-1 alpha-2) where inventory is concentrated'),
+    ] = None
+    description: Annotated[
+        str | None,
         Field(
-            description='Whether delivery reporting includes daily_breakdown at the media buy and/or package level.'
+            description='Markdown-formatted description of the inventory portfolio', max_length=5000
         ),
     ] = None
-    supports_date_range: Annotated[
-        bool | None,
+    advertising_policies: Annotated[
+        str | None,
         Field(
-            description="Whether any products support date range filtering (date_range_support: 'date_range'). When false, all products return lifetime-only data."
+            description='Advertising content policies, restrictions, and guidelines',
+            max_length=10000,
         ),
     ] = None
-    supports_webhooks: Annotated[
-        bool | None,
-        Field(description='Whether any products support webhook-based reporting notifications.'),
-    ] = None
 
 
 class DataProviderDomain(PublisherDomain):
@@ -493,240 +342,276 @@ class Signals(AdCPBaseModel):
     ] = None
 
 
-class Preferred(Enum):
-    mcp = 'mcp'
-    a2a = 'a2a'
+class Type(Enum):
+    binary = 'binary'
+    quantitative = 'quantitative'
+    categorical = 'categorical'
 
 
-class Transport(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    type: Annotated[Preferred, Field(description='Protocol transport type')]
-    url: Annotated[AnyUrl, Field(description='Agent endpoint URL for this transport')]
+class Range(AdCPBaseModel):
+    min: Annotated[float, Field(description='Minimum value')]
+    max: Annotated[float, Field(description='Maximum value')]
 
 
-class Endpoint(AdCPBaseModel):
-    preferred: Annotated[
-        Preferred | None, Field(description='Preferred transport when host supports multiple')
-    ] = None
-    transports: Annotated[
-        list[Transport],
+class PropertyFeature(AdCPBaseModel):
+    feature_id: Annotated[
+        str,
         Field(
-            description='Available protocol transports. Hosts select based on their capabilities.',
-            min_length=1,
+            description="Unique identifier for this feature (e.g., 'consent_quality', 'coppa_certified', 'carbon_score')"
         ),
     ]
-
-
-class SupportedProtocol(Enum):
-    media_buy = 'media_buy'
-    signals = 'signals'
-    governance = 'governance'
-    sponsored_intelligence = 'sponsored_intelligence'
-    creative = 'creative'
-    brand = 'brand'
-
-
-class Brand(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    available_uses: Annotated[
-        list[right_use.RightUse] | None,
-        Field(description="Rights uses available across this agent's roster"),
-    ] = None
-    description: Annotated[
-        str | None,
+    type: Annotated[
+        Type,
         Field(
-            description="Description of the agent's brand protocol capabilities", max_length=5000
+            description="Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
         ),
+    ]
+    range: Annotated[
+        Range | None, Field(description='For quantitative features, the valid range')
     ] = None
-    generation_providers: Annotated[
-        list[str] | None,
-        Field(description='LLM/generation providers this agent can issue credentials for'),
+    categories: Annotated[
+        list[str] | None, Field(description='For categorical features, the valid values')
     ] = None
-    identity: Annotated[
-        bool | None,
-        Field(description='Supports get_brand_identity for retrieving brand identity data'),
-    ] = True
-    right_types: Annotated[
-        list[right_type.RightType] | None,
-        Field(description='Types of rights available through this agent'),
+    description: Annotated[
+        str | None, Field(description='Human-readable description of what this feature measures')
     ] = None
-    rights: Annotated[
-        bool | None,
+    methodology_url: Annotated[
+        AnyUrl | None,
         Field(
-            description='Supports get_rights and acquire_rights for rights discovery and clearance'
+            description='URL to documentation explaining how this feature is calculated or measured. Helps buyers understand and compare methodologies across vendors.'
         ),
-    ] = False
+    ] = None
 
 
-class AudienceTargeting(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    matching_latency_hours: Annotated[
-        MatchingLatencyHours | None,
+class CreativeFeature(AdCPBaseModel):
+    feature_id: Annotated[
+        str,
         Field(
-            description='Expected matching latency range in hours after upload. Use to calibrate polling cadence and set appropriate expectations before configuring push_notification_config.'
+            description="Unique identifier for this feature (e.g., 'auto_redirect', 'brand_consistency', 'iab_casinos_gambling')"
         ),
-    ] = None
-    minimum_audience_size: Annotated[
-        int,
+    ]
+    type: Annotated[
+        Type,
         Field(
-            description='Minimum matched audience size required for targeting. Audiences below this threshold will have status: too_small. Varies by platform (100–1000 is typical).',
-            ge=1,
+            description="Data type: 'binary' for yes/no, 'quantitative' for numeric scores, 'categorical' for enum values"
         ),
     ]
-    supported_identifier_types: Annotated[
-        list[SupportedIdentifierType],
+    range: Annotated[
+        Range | None, Field(description='For quantitative features, the valid range')
+    ] = None
+    categories: Annotated[
+        list[str] | None, Field(description='For categorical features, the valid values')
+    ] = None
+    description: Annotated[
+        str | None, Field(description='Human-readable description of what this feature measures')
+    ] = None
+    methodology_url: Annotated[
+        AnyUrl | None,
         Field(
-            description='PII-derived identifier types accepted for audience matching. Buyers should only send identifiers the seller supports.',
-            min_length=1,
+            description='URL to documentation explaining how this feature is calculated or measured.'
         ),
-    ]
-    supported_uid_types: Annotated[
-        list[uid_type.UidType] | None,
+    ] = None
+
+
+class Governance(AdCPBaseModel):
+    property_features: Annotated[
+        list[PropertyFeature] | None,
         Field(
-            description='Universal ID types accepted for audience matching (MAIDs, RampID, UID2, etc.). MAID support varies significantly by platform — check this field before sending uids with type: maid.',
-            min_length=1,
+            description='Property features this governance agent can evaluate. Each feature describes a score, rating, or certification the agent can provide for properties.'
         ),
     ] = None
-    supports_platform_customer_id: Annotated[
-        bool | None,
+    creative_features: Annotated[
+        list[CreativeFeature] | None,
         Field(
-            description="Whether the seller accepts the buyer's CRM/loyalty ID as a matchable identifier. Only applicable when the seller operates a closed ecosystem with a shared ID namespace (e.g., a retailer matching against their loyalty program). When true, buyers can include platform_customer_id values in AudienceMember.identifiers for matching against the seller's identity graph. Reporting on matched platform_customer_ids typically requires a clean room or the seller's own reporting surface."
+            description='Creative features this governance agent can evaluate. Each feature describes a score, rating, or assessment the agent can provide for creatives (e.g., security scanning, creative quality, content categorization).'
         ),
     ] = None
 
 
-class ConversionTracking(AdCPBaseModel):
+class Type28(Enum):
+    mcp = 'mcp'
+    a2a = 'a2a'
+
+
+class Transport(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    attribution_windows: Annotated[
-        list[AttributionWindow] | None,
+    type: Annotated[Type28, Field(description='Protocol transport type')]
+    url: Annotated[AnyUrl, Field(description='Agent endpoint URL for this transport')]
+
+
+class Endpoint(AdCPBaseModel):
+    transports: Annotated[
+        list[Transport],
         Field(
-            description='Attribution windows available from this seller. Single-element arrays indicate fixed windows; multi-element arrays indicate configurable options the buyer can choose from via attribution_window on optimization goals.'
+            description='Available protocol transports. Hosts select based on their capabilities.',
+            min_length=1,
         ),
+    ]
+    preferred: Annotated[
+        Type28 | None, Field(description='Preferred transport when host supports multiple')
     ] = None
-    multi_source_event_dedup: Annotated[
+
+
+class Creative(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supports_compliance: Annotated[
         bool | None,
         Field(
-            description='Whether this seller can deduplicate conversion events across multiple event sources within a single goal. When true, the seller honors the deduplication semantics in optimization_goals event_sources arrays — the same event_id from multiple sources counts once. When false or absent, buyers should use a single event source per goal; multi-source arrays will be treated as first-source-wins. Most social platforms cannot deduplicate across independently-managed pixel and CAPI sources.'
+            description='When true, this creative agent can process briefs with compliance requirements (required_disclosures, prohibited_claims) and will validate that disclosures can be satisfied by the target format.'
         ),
     ] = None
-    supported_action_sources: Annotated[
-        list[action_source.ActionSource] | None,
-        Field(description='Action sources this seller accepts events from', min_length=1),
-    ] = None
-    supported_event_types: Annotated[
-        list[event_type_1.EventType] | None,
+    has_creative_library: Annotated[
+        bool | None,
         Field(
-            description='Event types this seller can track and attribute. If omitted, all standard event types are supported.',
-            min_length=1,
+            description='When true, this agent hosts a creative library and supports list_creatives and creative_id references in build_creative. Creative agents with a library should also implement the accounts protocol (sync_accounts / list_accounts) so buyers can establish access.'
         ),
-    ] = None
-    supported_hashed_identifiers: Annotated[
-        list[SupportedIdentifierType] | None,
+    ] = False
+    supports_generation: Annotated[
+        bool | None,
         Field(
-            description='Hashed PII types accepted for user matching. Buyers must hash before sending (SHA-256, normalized).',
-            min_length=1,
+            description='When true, this agent can generate creatives from natural language briefs via build_creative. The buyer provides a message with creative direction, and the agent produces a manifest with generated assets. When false, build_creative only supports transformation or library retrieval.'
         ),
-    ] = None
-    supported_uid_types: Annotated[
-        list[uid_type.UidType] | None,
-        Field(description='Universal ID types accepted for user matching', min_length=1),
-    ] = None
+    ] = False
+    supports_transformation: Annotated[
+        bool | None,
+        Field(
+            description='When true, this agent can transform or resize existing manifests via build_creative. The buyer provides a creative_manifest and a target_format_id, and the agent adapts the creative to the new format.'
+        ),
+    ] = False
 
 
-class GeoProximity(AdCPBaseModel):
-    geometry: Annotated[
-        bool | None,
+class CoversContentDigest(Enum):
+    required = 'required'
+    forbidden = 'forbidden'
+    either = 'either'
+
+
+class RequestSigning(AdCPBaseModel):
+    supported: Annotated[
+        bool,
         Field(
-            description='Whether seller supports pre-computed GeoJSON geometry (buyer provides the polygon)'
+            description='Whether this agent verifies RFC 9421 signatures on incoming requests. When true, signatures present on requests are validated per the AdCP request-signing profile. When false or absent, signatures are ignored (requests are bearer-authenticated only).'
         ),
-    ] = None
-    radius: Annotated[
-        bool | None,
+    ]
+    covers_content_digest: Annotated[
+        CoversContentDigest | None,
         Field(
-            description='Whether seller supports simple radius targeting (distance circle from a point)'
+            description="Policy for content-digest coverage in request signatures. 'required': signers MUST cover content-digest (body is bound to the signature); body-unbound signatures rejected with request_signature_components_incomplete. 'forbidden': signers MUST NOT cover content-digest; body-bound signatures rejected with request_signature_components_unexpected. This is an opt-out for the narrow case of legacy infrastructure that cannot preserve body bytes. 'either' (default): signer chooses per-request; verifier accepts both covered and uncovered forms. 'required' is recommended for spend-committing operations in production; 4.0 recommends 'required' for those operations."
+        ),
+    ] = CoversContentDigest.either
+    required_for: Annotated[
+        list[str] | None,
+        Field(
+            description="AdCP protocol operation names (e.g., 'create_media_buy') for which this agent rejects unsigned requests with request_signature_required. Not MCP tool names, A2A skill names, or any transport-specific rename — verifiers MUST NOT accept operation names that are not defined by the AdCP protocol spec. Empty in 3.0 by default; sellers populate selectively during per-counterparty pilots. In 4.0 this list MUST include all spend-committing operations the agent supports (create_media_buy, acquire_*, etc.). Counterparties MUST sign any listed operation."
+        ),
+    ] = []
+    warn_for: Annotated[
+        list[str] | None,
+        Field(
+            description='AdCP protocol operation names for which this agent verifies signatures when present and logs failures but does NOT reject the request. Used as a shadow-mode bridge between supported_for and required_for: the verifier surfaces failure rates in monitoring before flipping an operation to required. Precedence: required_for > warn_for > supported_for. An operation in required_for ignores warn_for. Counterparties SHOULD sign operations in warn_for; verifiers MUST NOT reject if the signature is missing or invalid.'
+        ),
+    ] = []
+    supported_for: Annotated[
+        list[str] | None,
+        Field(
+            description='AdCP protocol operation names for which this agent verifies signatures when present but does not require them. Counterparties SHOULD sign operations in this list. Typically a superset of required_for and warn_for.'
         ),
     ] = None
-    transport_modes: Annotated[
-        list[transport_mode.TransportMode] | None,
+
+
+class Scenario(Enum):
+    force_creative_status = 'force_creative_status'
+    force_account_status = 'force_account_status'
+    force_media_buy_status = 'force_media_buy_status'
+    force_session_status = 'force_session_status'
+    simulate_delivery = 'simulate_delivery'
+    simulate_budget_spend = 'simulate_budget_spend'
+
+
+class ComplianceTesting(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    scenarios: Annotated[
+        list[Scenario],
         Field(
-            description='Transport modes supported for travel_time isochrones. Only relevant when travel_time is true.',
+            description="Compliance testing scenarios this agent supports. Must be non-empty — at least one scenario. Callers can also use comply_test_controller with scenario: 'list_scenarios' to discover supported scenarios at runtime.",
             min_length=1,
         ),
-    ] = None
-    travel_time: Annotated[
-        bool | None,
+    ]
+
+
+class ExtensionsSupportedItem(RootModel[str]):
+    root: Annotated[
+        str,
         Field(
-            description='Whether seller supports travel time isochrone targeting (requires a routing engine)'
+            description="Extension namespace (lowercase alphanumeric with underscores, e.g., 'iab_tcf', 'iab_gpp')",
+            pattern='^[a-z][a-z0-9_]*$',
         ),
-    ] = None
+    ]
 
 
-class Targeting(AdCPBaseModel):
-    age_restriction: Annotated[
-        AgeRestriction | None,
-        Field(description='Age restriction capabilities for compliance (alcohol, gambling)'),
-    ] = None
-    audience_exclude: Annotated[
+class GeoProximity(AdCPBaseModel):
+    radius: Annotated[
         bool | None,
         Field(
-            description='Whether seller supports audience_exclude in targeting overlays (requires features.audience_targeting)'
+            description='Whether seller supports simple radius targeting (distance circle from a point)'
         ),
     ] = None
-    audience_include: Annotated[
+    travel_time: Annotated[
         bool | None,
         Field(
-            description='Whether seller supports audience_include in targeting overlays (requires features.audience_targeting)'
+            description='Whether seller supports travel time isochrone targeting (requires a routing engine)'
         ),
     ] = None
-    device_platform: Annotated[
+    geometry: Annotated[
         bool | None,
         Field(
-            description='Whether seller supports device platform targeting (Sec-CH-UA-Platform values)'
+            description='Whether seller supports pre-computed GeoJSON geometry (buyer provides the polygon)'
         ),
     ] = None
-    device_type: Annotated[
-        bool | None,
+    transport_modes: Annotated[
+        list[transport_mode.TransportMode] | None,
         Field(
-            description='Whether seller supports device type targeting (form factor: desktop, mobile, tablet, ctv, dooh, unknown). When true, seller supports both device_type (include) and device_type_exclude (exclude) in targeting overlays.'
+            description='Transport modes supported for travel_time isochrones. Only relevant when travel_time is true.',
+            min_length=1,
         ),
     ] = None
+
+
+class Targeting(AdCPBaseModel):
     geo_countries: Annotated[
+        bool | None, Field(description='Country-level targeting using ISO 3166-1 alpha-2 codes')
+    ] = None
+    geo_regions: Annotated[
         bool | None,
         Field(
-            description="Supports country-level geo targeting using ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE')"
+            description='Region/state-level targeting using ISO 3166-2 codes (e.g., US-NY, GB-SCT)'
         ),
     ] = None
     geo_metros: Annotated[
         GeoMetros | None,
         Field(
-            description='Metro area targeting support. Specifies which classification systems are supported.'
+            description='Metro area targeting. Properties indicate which classification systems are supported.'
         ),
     ] = None
     geo_postal_areas: Annotated[
         GeoPostalAreas | None,
         Field(
-            description='Postal area targeting support. Specifies which postal code systems are supported. System names encode country and precision.'
+            description='Postal area targeting. Properties indicate which postal code systems are supported.'
         ),
     ] = None
-    geo_proximity: Annotated[
-        GeoProximity | None,
-        Field(
-            description='Proximity targeting capabilities from arbitrary coordinates via targeting_overlay.geo_proximity.'
-        ),
+    age_restriction: Annotated[
+        AgeRestriction | None,
+        Field(description='Age restriction capabilities for compliance (alcohol, gambling)'),
     ] = None
-    geo_regions: Annotated[
+    language: Annotated[
         bool | None,
-        Field(
-            description="Supports region/state-level geo targeting using ISO 3166-2 subdivision codes (e.g., 'US-NY', 'GB-SCT', 'DE-BY')"
-        ),
+        Field(description='Whether seller supports language targeting (ISO 639-1 codes)'),
     ] = None
     keyword_targets: Annotated[
         KeywordTargets | None,
@@ -734,19 +619,27 @@ class Targeting(AdCPBaseModel):
             description='Keyword targeting capabilities. Presence indicates support for targeting_overlay.keyword_targets and keyword_targets_add/remove in update_media_buy.'
         ),
     ] = None
-    language: Annotated[
-        bool | None,
-        Field(description='Whether seller supports language targeting (ISO 639-1 codes)'),
-    ] = None
     negative_keywords: Annotated[
         NegativeKeywords | None,
         Field(
             description='Negative keyword capabilities. Presence indicates support for targeting_overlay.negative_keywords and negative_keywords_add/remove in update_media_buy.'
         ),
     ] = None
+    geo_proximity: Annotated[
+        GeoProximity | None,
+        Field(
+            description='Proximity targeting capabilities from arbitrary coordinates via targeting_overlay.geo_proximity.'
+        ),
+    ] = None
 
 
 class Execution(AdCPBaseModel):
+    trusted_match: Annotated[
+        TrustedMatch | None,
+        Field(
+            description='Trusted Match Protocol (TMP) support. Presence of this object indicates the seller has TMP infrastructure deployed. Check individual products via get_products for per-product TMP capabilities.'
+        ),
+    ] = None
     axe_integrations: Annotated[
         list[AnyUrl] | None,
         Field(
@@ -762,47 +655,88 @@ class Execution(AdCPBaseModel):
             description='Targeting capabilities. If declared true/supported, buyer can use these targeting parameters and seller MUST honor them.'
         ),
     ] = None
-    trusted_match: Annotated[
-        TrustedMatch | None,
+
+
+class AudienceTargeting(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    supported_identifier_types: Annotated[
+        list[SupportedIdentifierType],
+        Field(
+            description='PII-derived identifier types accepted for audience matching. Buyers should only send identifiers the seller supports.',
+            min_length=1,
+        ),
+    ]
+    supports_platform_customer_id: Annotated[
+        bool | None,
+        Field(
+            description="Whether the seller accepts the buyer's CRM/loyalty ID as a matchable identifier. Only applicable when the seller operates a closed ecosystem with a shared ID namespace (e.g., a retailer matching against their loyalty program). When true, buyers can include platform_customer_id values in AudienceMember.identifiers for matching against the seller's identity graph. Reporting on matched platform_customer_ids typically requires a clean room or the seller's own reporting surface."
+        ),
+    ] = None
+    supported_uid_types: Annotated[
+        list[uid_type.UidType] | None,
+        Field(
+            description='Universal ID types accepted for audience matching (MAIDs, RampID, UID2, etc.). MAID support varies significantly by platform — check this field before sending uids with type: maid.',
+            min_length=1,
+        ),
+    ] = None
+    minimum_audience_size: Annotated[
+        int,
+        Field(
+            description='Minimum matched audience size required for targeting. Audiences below this threshold will have status: too_small. Varies by platform (100–1000 is typical).',
+            ge=1,
+        ),
+    ]
+    matching_latency_hours: Annotated[
+        MatchingLatencyHours | None,
         Field(
-            description='Trusted Match Protocol (TMP) support. When present, this seller supports real-time contextual and/or identity matching. Check individual products via get_products for per-product TMP capabilities.'
+            description='Expected matching latency range in hours after upload. Use to calibrate polling cadence and set appropriate expectations before configuring push_notification_config.'
         ),
     ] = None
 
 
-class MediaBuy(AdCPBaseModel):
-    audience_targeting: Annotated[
-        AudienceTargeting | None,
+class ConversionTracking(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    multi_source_event_dedup: Annotated[
+        bool | None,
         Field(
-            description='Audience targeting capabilities. Only present when features.audience_targeting is true.'
+            description='Whether this seller can deduplicate conversion events across multiple event sources within a single goal. When true, the seller honors the deduplication semantics in optimization_goals event_sources arrays — the same event_id from multiple sources counts once. When false or absent, buyers should use a single event source per goal; multi-source arrays will be treated as first-source-wins. Most social platforms cannot deduplicate across independently-managed pixel and CAPI sources.'
         ),
     ] = None
-    content_standards_detail: Annotated[
-        ContentStandardsDetail | None,
+    supported_event_types: Annotated[
+        list[event_type_1.EventType] | None,
         Field(
-            description='Content standards implementation details. Only meaningful when features.content_standards is true. Gives buyers pre-buy visibility into local evaluation and artifact delivery capabilities.'
+            description='Event types this seller can track and attribute. If omitted, all standard event types are supported.',
+            min_length=1,
         ),
     ] = None
-    conversion_tracking: Annotated[
-        ConversionTracking | None,
+    supported_uid_types: Annotated[
+        list[uid_type.UidType] | None,
+        Field(description='Universal ID types accepted for user matching', min_length=1),
+    ] = None
+    supported_hashed_identifiers: Annotated[
+        list[SupportedIdentifierType] | None,
         Field(
-            description='Seller-level conversion tracking capabilities. Only present when features.conversion_tracking is true.'
+            description='Hashed PII types accepted for user matching. Buyers must hash before sending (SHA-256, normalized).',
+            min_length=1,
         ),
     ] = None
-    execution: Annotated[
-        Execution | None, Field(description='Technical execution capabilities for media buying')
-    ] = None
-    features: media_buy_features.MediaBuyFeatures | None = None
-    portfolio: Annotated[
-        Portfolio | None,
-        Field(description="Information about the seller's media inventory portfolio"),
+    supported_action_sources: Annotated[
+        list[action_source.ActionSource] | None,
+        Field(description='Action sources this seller accepts events from', min_length=1),
     ] = None
-    reporting: Annotated[
-        Reporting | None,
+    attribution_windows: Annotated[
+        list[AttributionWindow] | None,
         Field(
-            description="Seller-level reporting capabilities. Summarizes what reporting features are available across the seller's product portfolio. Individual products may vary — check product-level reporting_capabilities for specifics."
+            description='Attribution windows available from this seller. Single-element arrays indicate fixed windows; multi-element arrays indicate configurable options the buyer can choose from via attribution_window on optimization goals.'
         ),
     ] = None
+
+
+class MediaBuy(AdCPBaseModel):
     supported_pricing_models: Annotated[
         list[pricing_model.PricingModel] | None,
         Field(
@@ -810,84 +744,177 @@ class MediaBuy(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
+    reporting_delivery_methods: Annotated[
+        list[ReportingDeliveryMethod] | None,
+        Field(
+            description="How this seller delivers reporting data to buyers. Polling via get_media_buy_delivery is always available as a baseline regardless of this field. This array declares additional push-based delivery methods the seller supports. 'webhook': seller pushes to buyer-provided URL (configured per buy via reporting_webhook). 'offline': seller pushes batch files to a cloud storage bucket (seller-provisioned per account via reporting_bucket on the account object). When absent, only polling is available.",
+            min_length=1,
+        ),
+    ] = None
+    offline_delivery_protocols: Annotated[
+        list[cloud_storage_protocol.CloudStorageProtocol] | None,
+        Field(
+            description="Cloud storage protocols this seller supports for offline file delivery. Only meaningful when reporting_delivery_methods includes 'offline'. Buyers express a protocol preference in sync_accounts; the seller provisions the account's reporting_bucket using a supported protocol.",
+            min_length=1,
+        ),
+    ] = None
+    features: media_buy_features.MediaBuyFeatures | None = None
+    execution: Annotated[
+        Execution | None, Field(description='Technical execution capabilities for media buying')
+    ] = None
+    audience_targeting: Annotated[
+        AudienceTargeting | None,
+        Field(
+            description='Audience targeting capabilities. Presence of this object indicates the seller supports audience targeting, including sync_audiences and audience_include/audience_exclude in targeting overlays.'
+        ),
+    ] = None
+    conversion_tracking: Annotated[
+        ConversionTracking | None,
+        Field(
+            description='Seller-level conversion tracking capabilities. Presence of this object indicates the seller supports sync_event_sources and log_event for conversion event tracking.'
+        ),
+    ] = None
+    content_standards: Annotated[
+        ContentStandards | None,
+        Field(
+            description='Content standards implementation details. Presence of this object indicates the seller supports content_standards configuration including sampling rates and category filtering. Gives buyers pre-buy visibility into local evaluation and artifact delivery capabilities.'
+        ),
+    ] = None
+    portfolio: Annotated[
+        Portfolio | None,
+        Field(
+            description="Information about the seller's media inventory portfolio. Expected for media_buy sellers — buyers use this to understand inventory coverage and verify authorization via adagents.json."
+        ),
+    ] = None
 
 
 class SponsoredIntelligence(AdCPBaseModel):
-    brand_url: Annotated[
-        AnyUrl | None, Field(description='URL to brand.json with colors, fonts, logos, tone')
-    ] = None
+    endpoint: Annotated[Endpoint, Field(description='SI agent endpoint configuration')]
     capabilities: Annotated[
         si_capabilities.SiCapabilities,
         Field(description='Modalities, components, and commerce capabilities'),
     ]
-    endpoint: Annotated[Endpoint, Field(description='SI agent endpoint configuration')]
+    brand_url: Annotated[
+        AnyUrl | None, Field(description='URL to brand.json with colors, fonts, logos, tone')
+    ] = None
+
+
+class Brand(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    rights: Annotated[
+        bool | None,
+        Field(
+            description='Supports get_rights and acquire_rights for rights discovery and clearance'
+        ),
+    ] = False
+    right_types: Annotated[
+        list[right_type.RightType] | None,
+        Field(description='Types of rights available through this agent'),
+    ] = None
+    available_uses: Annotated[
+        list[right_use.RightUse] | None,
+        Field(description="Rights uses available across this agent's roster"),
+    ] = None
+    generation_providers: Annotated[
+        list[str] | None,
+        Field(description='LLM/generation providers this agent can issue credentials for'),
+    ] = None
+    description: Annotated[
+        str | None,
+        Field(
+            description="Description of the agent's brand protocol capabilities", max_length=5000
+        ),
+    ] = None
 
 
 class GetAdcpCapabilitiesResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp: Annotated[Adcp, Field(description='Core AdCP protocol information')]
+    supported_protocols: Annotated[
+        list[SupportedProtocol],
+        Field(
+            description='AdCP protocols this agent supports. Each value both (a) declares which tools the agent implements and (b) commits the agent to pass the baseline compliance storyboard at /compliance/{version}/protocols/{protocol}/ (with snake_case → kebab-case path mapping, e.g. media_buy → /compliance/.../protocols/media-buy/). Compliance testing support is declared separately via the `compliance_testing` capability block (below), not as a protocol claim.',
+            min_length=1,
+        ),
+    ]
     account: Annotated[
         Account | None,
         Field(
             description='Account management capabilities. Describes how accounts are established, what billing models are supported, and whether an account is required before browsing products.'
         ),
     ] = None
-    adcp: Annotated[Adcp, Field(description='Core AdCP protocol information')]
+    media_buy: Annotated[
+        MediaBuy | None,
+        Field(
+            description='Media-buy protocol capabilities. Expected when media_buy is in supported_protocols. Sellers declaring media_buy should also include account with supported_billing.'
+        ),
+    ] = None
+    signals: Annotated[
+        Signals | None,
+        Field(
+            description='Signals protocol capabilities. Only present if signals is in supported_protocols.'
+        ),
+    ] = None
+    governance: Annotated[
+        Governance | None,
+        Field(
+            description='Governance protocol capabilities. Only present if governance is in supported_protocols. Governance agents provide property and creative data like compliance scores, brand safety ratings, sustainability metrics, and creative quality assessments.'
+        ),
+    ] = None
+    sponsored_intelligence: Annotated[
+        SponsoredIntelligence | None,
+        Field(
+            description='Sponsored Intelligence protocol capabilities. Only present if sponsored_intelligence is in supported_protocols. SI agents handle conversational brand experiences.'
+        ),
+    ] = None
     brand: Annotated[
         Brand | None,
         Field(
             description='Brand protocol capabilities. Only present if brand is in supported_protocols. Brand agents provide identity data (logos, colors, tone, assets) and optionally rights clearance for licensable content (talent, music, stock media).'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
     creative: Annotated[
         Creative | None,
         Field(
             description='Creative protocol capabilities. Only present if creative is in supported_protocols.'
         ),
     ] = None
-    errors: Annotated[
-        list[error.Error] | None, Field(description='Task-specific errors and warnings')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    extensions_supported: Annotated[
-        list[ExtensionsSupportedItem] | None,
+    request_signing: Annotated[
+        RequestSigning | None,
         Field(
-            description='Extension namespaces this agent supports. Buyers can expect meaningful data in ext.{namespace} fields on responses from this agent. Extension schemas are published in the AdCP extension registry.'
+            description='RFC 9421 HTTP Signatures support for incoming requests. Optional in 3.0 — capability-advertised so counterparties can opt into signing selectively. Required for spend-committing operations in 4.0 (the next breaking-changes accumulation window). The full profile is defined in docs/building/implementation/security.mdx (Signed Requests (Transport Layer)).'
         ),
     ] = None
-    governance: Annotated[
-        Governance | None,
+    compliance_testing: Annotated[
+        ComplianceTesting | None,
         Field(
-            description='Governance protocol capabilities. Only present if governance is in supported_protocols. Governance agents provide property and creative data like compliance scores, brand safety ratings, sustainability metrics, and creative quality assessments.'
+            description='Compliance testing capabilities. The presence of this block declares that the agent supports deterministic testing via comply_test_controller for lifecycle state machine validation. Omit the block entirely if the agent does not support compliance testing.'
         ),
     ] = None
-    last_updated: Annotated[
-        AwareDatetime | None,
+    specialisms: Annotated[
+        list[specialism.AdcpSpecialism] | None,
         Field(
-            description='ISO 8601 timestamp of when capabilities were last updated. Buyers can use this for cache invalidation.'
+            description='Optional — specialized compliance claims this agent supports. Omitting the field means the agent declares no specialism claims (it still passes the universal + domain-baseline storyboards implied by supported_protocols). Each specialism maps to a storyboard bundle at /compliance/{version}/specialisms/{id}/ that the AAO compliance runner executes to verify the claim. Each specialism rolls up to one of the protocols in supported_protocols — the runner rejects a specialism claim whose parent protocol is missing. Only list specialisms your agent actually implements — the AAO Verified badge enumerates which specialisms were demonstrably passed.'
         ),
     ] = None
-    media_buy: Annotated[
-        MediaBuy | None,
+    extensions_supported: Annotated[
+        list[ExtensionsSupportedItem] | None,
         Field(
-            description='Media-buy protocol capabilities. Only present if media_buy is in supported_protocols.'
+            description='Extension namespaces this agent supports. Buyers can expect meaningful data in ext.{namespace} fields on responses from this agent. Extension schemas are published in the AdCP extension registry.'
         ),
     ] = None
-    signals: Annotated[
-        Signals | None,
+    last_updated: Annotated[
+        AwareDatetime | None,
         Field(
-            description='Signals protocol capabilities. Only present if signals is in supported_protocols.'
+            description='ISO 8601 timestamp of when capabilities were last updated. Buyers can use this for cache invalidation.'
         ),
     ] = None
-    sponsored_intelligence: Annotated[
-        SponsoredIntelligence | None,
-        Field(
-            description='Sponsored Intelligence protocol capabilities. Only present if sponsored_intelligence is in supported_protocols. SI agents handle conversational brand experiences.'
-        ),
+    errors: Annotated[
+        list[error.Error] | None, Field(description='Task-specific errors and warnings')
     ] = None
-    supported_protocols: Annotated[
-        list[SupportedProtocol],
-        Field(description='Which AdCP domain protocols this seller supports', min_length=1),
-    ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/signals/activate_signal_request.py b/src/adcp/types/generated_poc/signals/activate_signal_request.py
index 5cfbb4e68..4d0a6997b 100644
--- a/src/adcp/types/generated_poc/signals/activate_signal_request.py
+++ b/src/adcp/types/generated_poc/signals/activate_signal_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  signals/activate_signal_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -25,10 +25,12 @@ class ActivateSignalRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    account: Annotated[
-        account_ref.AccountReference | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Account for this activation. Associates with a commercial relationship established via sync_accounts.'
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
     action: Annotated[
@@ -37,7 +39,9 @@ class ActivateSignalRequest(AdCPBaseModel):
             description="Whether to activate or deactivate the signal. Deactivating removes the segment from downstream platforms, required when campaigns end to comply with data governance policies (GDPR, CCPA). Defaults to 'activate' when omitted."
         ),
     ] = Action.activate
-    context: context_1.ContextObject | None = None
+    signal_agent_segment_id: Annotated[
+        str, Field(description='The universal identifier for the signal to activate')
+    ]
     destinations: Annotated[
         list[destination.Destination],
         Field(
@@ -45,21 +49,26 @@ class ActivateSignalRequest(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    ext: ext_1.ExtensionObject | None = None
-    idempotency_key: Annotated[
+    pricing_option_id: Annotated[
         str | None,
         Field(
-            description='Client-generated unique key for this request. Prevents duplicate activations on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
+            description="The pricing option selected from the signal's pricing_options in the get_signals response. Required when the signal has pricing options. Records the buyer's pricing commitment at activation time; pass this same value in report_usage for billing verification."
         ),
     ] = None
-    pricing_option_id: Annotated[
-        str | None,
+    account: Annotated[
+        account_ref.AccountReference | None,
         Field(
-            description="The pricing option selected from the signal's pricing_options in the get_signals response. Required when the signal has pricing options. Records the buyer's pricing commitment at activation time; pass this same value in report_usage for billing verification."
+            description='Account for this activation. Associates with a commercial relationship established via sync_accounts.'
         ),
     ] = None
-    signal_agent_segment_id: Annotated[
-        str, Field(description='The universal identifier for the signal to activate')
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate activations on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
     ]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/signals/activate_signal_response.py b/src/adcp/types/generated_poc/signals/activate_signal_response.py
index af6b12839..daf54c488 100644
--- a/src/adcp/types/generated_poc/signals/activate_signal_response.py
+++ b/src/adcp/types/generated_poc/signals/activate_signal_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  signals/activate_signal_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,23 +18,22 @@ class ActivateSignalResponse1(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     deployments: Annotated[
         list[deployment.Deployment],
         Field(description='Array of deployment results for each deployment target'),
     ]
-    ext: ext_1.ExtensionObject | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
 
 
 class ActivateSignalResponse2(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     errors: Annotated[
         list[error.Error],
         Field(
@@ -42,6 +41,7 @@ class ActivateSignalResponse2(AdCPBaseModel):
             min_length=1,
         ),
     ]
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
 
 
diff --git a/src/adcp/types/generated_poc/signals/get_signals_request.py b/src/adcp/types/generated_poc/signals/get_signals_request.py
index 044c9e332..314caa045 100644
--- a/src/adcp/types/generated_poc/signals/get_signals_request.py
+++ b/src/adcp/types/generated_poc/signals/get_signals_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  signals/get_signals_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,17 +24,30 @@ class GetSignalsRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     account: Annotated[
         account_ref.AccountReference | None,
         Field(
             description='Account for this request. When provided, the signals agent returns per-account pricing options if configured.'
         ),
     ] = None
-    context: context_1.ContextObject | None = None
-    countries: Annotated[
-        list[Country] | None,
+    signal_spec: Annotated[
+        str | None,
         Field(
-            description='Countries where signals will be used (ISO 3166-1 alpha-2 codes). When omitted, no geographic filter is applied.',
+            description='Natural language description of the desired signals. When used alone, enables semantic discovery. When combined with signal_ids, provides context for the agent but signal_ids matches are returned first.'
+        ),
+    ] = None
+    signal_ids: Annotated[
+        list[signal_id.SignalId] | None,
+        Field(
+            description="Specific signals to look up by data provider and ID. Returns exact matches from the data provider's catalog. When combined with signal_spec, these signals anchor the starting set and signal_spec guides adjustments.",
             min_length=1,
         ),
     ] = None
@@ -45,22 +58,17 @@ class GetSignalsRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    filters: signal_filters.SignalFilters | None = None
-    max_results: Annotated[
-        int | None, Field(description='Maximum number of results to return', ge=1)
-    ] = None
-    pagination: pagination_request.PaginationRequest | None = None
-    signal_ids: Annotated[
-        list[signal_id.SignalId] | None,
+    countries: Annotated[
+        list[Country] | None,
         Field(
-            description="Specific signals to look up by data provider and ID. Returns exact matches from the data provider's catalog. When combined with signal_spec, these signals anchor the starting set and signal_spec guides adjustments.",
+            description='Countries where signals will be used (ISO 3166-1 alpha-2 codes). When omitted, no geographic filter is applied.',
             min_length=1,
         ),
     ] = None
-    signal_spec: Annotated[
-        str | None,
-        Field(
-            description='Natural language description of the desired signals. When used alone, enables semantic discovery. When combined with signal_ids, provides context for the agent but signal_ids matches are returned first.'
-        ),
+    filters: signal_filters.SignalFilters | None = None
+    max_results: Annotated[
+        int | None, Field(description='Maximum number of results to return', ge=1)
     ] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/signals/get_signals_response.py b/src/adcp/types/generated_poc/signals/get_signals_response.py
index 1483c389e..f537ddaf5 100644
--- a/src/adcp/types/generated_poc/signals/get_signals_response.py
+++ b/src/adcp/types/generated_poc/signals/get_signals_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  signals/get_signals_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,7 +14,7 @@
 from ..core import ext as ext_1
 from ..core import pagination_response
 from ..core import signal_id as signal_id_1
-from ..core import signal_pricing_option
+from ..core import vendor_pricing_option
 from ..enums import signal_catalog_type, signal_value_type
 
 
@@ -22,77 +22,77 @@ class Range(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    max: Annotated[float, Field(description='Maximum value (inclusive)')]
     min: Annotated[float, Field(description='Minimum value (inclusive)')]
+    max: Annotated[float, Field(description='Maximum value (inclusive)')]
 
 
 class Signal(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    signal_id: Annotated[
+        signal_id_1.SignalId,
+        Field(
+            description="Universal signal identifier referencing the data provider's catalog. Use this to verify authorization and look up signal definitions."
+        ),
+    ]
+    signal_agent_segment_id: Annotated[
+        str,
+        Field(
+            description="Opaque identifier used for activation. This is the signals agent's internal segment ID."
+        ),
+    ]
+    name: Annotated[str, Field(description='Human-readable signal name')]
+    description: Annotated[str, Field(description='Detailed signal description')]
+    value_type: Annotated[
+        signal_value_type.SignalValueType | None,
+        Field(description="The data type of this signal's values (binary, categorical, numeric)"),
+    ] = None
     categories: Annotated[
         list[str] | None,
         Field(
             description="Valid values for categorical signals. Present when value_type is 'categorical'. Buyers must use one of these values in SignalTargeting.values."
         ),
     ] = None
+    range: Annotated[
+        Range | None,
+        Field(description="Valid range for numeric signals. Present when value_type is 'numeric'."),
+    ] = None
+    signal_type: Annotated[
+        signal_catalog_type.SignalCatalogType,
+        Field(description='Catalog type of signal (marketplace, custom, owned)'),
+    ]
+    data_provider: Annotated[str, Field(description='Human-readable name of the data provider')]
     coverage_percentage: Annotated[
         float, Field(description='Percentage of audience coverage', ge=0.0, le=100.0)
     ]
-    data_provider: Annotated[str, Field(description='Human-readable name of the data provider')]
     deployments: Annotated[
         list[deployment.Deployment], Field(description='Array of deployment targets')
     ]
-    description: Annotated[str, Field(description='Detailed signal description')]
-    name: Annotated[str, Field(description='Human-readable signal name')]
     pricing_options: Annotated[
-        list[signal_pricing_option.SignalPricingOption],
+        list[vendor_pricing_option.VendorPricingOption],
         Field(
             description='Pricing options available for this signal. The buyer selects one and passes its pricing_option_id in report_usage for billing verification.',
             min_length=1,
         ),
     ]
-    range: Annotated[
-        Range | None,
-        Field(description="Valid range for numeric signals. Present when value_type is 'numeric'."),
-    ] = None
-    signal_agent_segment_id: Annotated[
-        str,
-        Field(
-            description="Opaque identifier used for activation. This is the signals agent's internal segment ID."
-        ),
-    ]
-    signal_id: Annotated[
-        signal_id_1.SignalId | None,
-        Field(
-            description="Universal signal identifier referencing the data provider's catalog. Use this to verify authorization and look up signal definitions."
-        ),
-    ] = None
-    signal_type: Annotated[
-        signal_catalog_type.SignalCatalogType,
-        Field(description='Catalog type of signal (marketplace, custom, owned)'),
-    ]
-    value_type: Annotated[
-        signal_value_type.SignalValueType | None,
-        Field(description="The data type of this signal's values (binary, categorical, numeric)"),
-    ] = None
 
 
 class GetSignalsResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    signals: Annotated[list[Signal], Field(description='Array of matching signals')]
     errors: Annotated[
         list[error.Error] | None,
         Field(
             description='Task-specific errors and warnings (e.g., signal discovery or pricing issues)'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     pagination: pagination_response.PaginationResponse | None = None
     sandbox: Annotated[
         bool | None,
         Field(description='When true, this response contains simulated data from sandbox mode.'),
     ] = None
-    signals: Annotated[list[Signal], Field(description='Array of matching signals')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_capabilities.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_capabilities.py
index 0fa793296..345c01f0e 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_capabilities.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_capabilities.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_capabilities.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,23 +11,49 @@
 from pydantic import ConfigDict, Field
 
 
-class A2ui(AdCPBaseModel):
+class Voice(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    catalogs: Annotated[
-        list[str] | None,
-        Field(description="Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"),
+    provider: Annotated[
+        str | None, Field(description='TTS provider (elevenlabs, openai, etc.)')
     ] = None
-    supported: Annotated[bool | None, Field(description='Supports A2UI surface rendering')] = False
+    voice_id: Annotated[str | None, Field(description='Brand voice identifier')] = None
 
 
-class Commerce(AdCPBaseModel):
+class Video(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    acp_checkout: Annotated[
-        bool | None, Field(description='Supports ACP (Agentic Commerce Protocol) checkout handoff')
+    formats: Annotated[
+        list[str] | None, Field(description='Supported video formats (mp4, webm, etc.)')
+    ] = None
+    max_duration_seconds: Annotated[int | None, Field(description='Maximum video duration')] = None
+
+
+class Avatar(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    provider: Annotated[
+        str | None, Field(description='Avatar provider (d-id, heygen, synthesia, etc.)')
+    ] = None
+    avatar_id: Annotated[str | None, Field(description='Brand avatar identifier')] = None
+
+
+class Modalities(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    conversational: Annotated[
+        bool | None, Field(description='Pure text exchange - the baseline modality')
+    ] = True
+    voice: Annotated[
+        bool | Voice | None, Field(description='Audio-based interaction using brand voice')
+    ] = None
+    video: Annotated[bool | Video | None, Field(description='Brand video content playback')] = None
+    avatar: Annotated[
+        bool | Avatar | None, Field(description='Animated video presence with brand avatar')
     ] = None
 
 
@@ -44,59 +70,33 @@ class Components(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    extensions: Annotated[
-        dict[str, Any] | None,
-        Field(description='Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)'),
-    ] = None
     standard: Annotated[
         list[StandardEnum] | None,
         Field(description='Standard components that all SI hosts must render'),
     ] = None
-
-
-class Avatar(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    avatar_id: Annotated[str | None, Field(description='Brand avatar identifier')] = None
-    provider: Annotated[
-        str | None, Field(description='Avatar provider (d-id, heygen, synthesia, etc.)')
-    ] = None
-
-
-class Video(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    formats: Annotated[
-        list[str] | None, Field(description='Supported video formats (mp4, webm, etc.)')
+    extensions: Annotated[
+        dict[str, Any] | None,
+        Field(description='Platform-specific extensions (chatgpt_apps_sdk, maps, forms, etc.)'),
     ] = None
-    max_duration_seconds: Annotated[int | None, Field(description='Maximum video duration')] = None
 
 
-class Voice(AdCPBaseModel):
+class Commerce(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    provider: Annotated[
-        str | None, Field(description='TTS provider (elevenlabs, openai, etc.)')
+    acp_checkout: Annotated[
+        bool | None, Field(description='Supports ACP (Agentic Commerce Protocol) checkout handoff')
     ] = None
-    voice_id: Annotated[str | None, Field(description='Brand voice identifier')] = None
 
 
-class Modalities(AdCPBaseModel):
+class A2ui(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    avatar: Annotated[
-        bool | Avatar | None, Field(description='Animated video presence with brand avatar')
-    ] = None
-    conversational: Annotated[
-        bool | None, Field(description='Pure text exchange - the baseline modality')
-    ] = True
-    video: Annotated[bool | Video | None, Field(description='Brand video content playback')] = None
-    voice: Annotated[
-        bool | Voice | None, Field(description='Audio-based interaction using brand voice')
+    supported: Annotated[bool | None, Field(description='Supports A2UI surface rendering')] = False
+    catalogs: Annotated[
+        list[str] | None,
+        Field(description="Supported A2UI component catalogs (e.g., 'si-standard', 'standard')"),
     ] = None
 
 
@@ -104,14 +104,14 @@ class SiCapabilities(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    a2ui: Annotated[A2ui | None, Field(description='A2UI (Agent-to-UI) capabilities')] = None
-    commerce: Annotated[Commerce | None, Field(description='Commerce capabilities')] = None
+    modalities: Annotated[
+        Modalities | None, Field(description='Interaction modalities supported')
+    ] = None
     components: Annotated[Components | None, Field(description='Visual components supported')] = (
         None
     )
+    commerce: Annotated[Commerce | None, Field(description='Commerce capabilities')] = None
+    a2ui: Annotated[A2ui | None, Field(description='A2UI (Agent-to-UI) capabilities')] = None
     mcp_apps: Annotated[
         bool | None, Field(description='Supports MCP Apps for rendering A2UI surfaces in iframes')
     ] = False
-    modalities: Annotated[
-        Modalities | None, Field(description='Interaction modalities supported')
-    ] = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_request.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_request.py
index c93303b10..93c52222e 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_request.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_get_offering_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,19 +16,27 @@ class SiGetOfferingRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    offering_id: Annotated[
+        str, Field(description='Offering identifier from the catalog to get details for')
+    ]
     context: Annotated[
         str | None,
         Field(
             description="Optional natural language context about user intent for personalized results (e.g., 'mens size 14 near Cincinnati'). Must be anonymous - no PII."
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
     include_products: Annotated[
         bool | None, Field(description='Whether to include matching products in the response')
     ] = False
-    offering_id: Annotated[
-        str, Field(description='Offering identifier from the catalog to get details for')
-    ]
     product_limit: Annotated[
         int | None, Field(description='Maximum number of matching products to return', ge=1, le=50)
     ] = 5
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_response.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_response.py
index 2d9884220..bca8b5f63 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_response.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_get_offering_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_get_offering_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,86 +9,79 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import error
 from ..core import ext as ext_1
 
 
-class MatchingProduct(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    availability_summary: Annotated[
-        str | None,
-        Field(
-            description="Brief availability info (e.g., 'In stock', 'Size 14 available', '3 left')"
-        ),
-    ] = None
-    image_url: Annotated[AnyUrl | None, Field(description='Product image')] = None
-    name: Annotated[str, Field(description='Product name')]
-    original_price: Annotated[str | None, Field(description='Original price if on sale')] = None
-    price: Annotated[str | None, Field(description="Display price (e.g., '$129', '$89.99')")] = None
-    product_id: Annotated[str, Field(description='Product identifier')]
-    url: Annotated[AnyUrl | None, Field(description='Product detail page URL')] = None
-
-
 class Offering(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    offering_id: Annotated[str | None, Field(description='Offering identifier')] = None
+    title: Annotated[str | None, Field(description='Offering title')] = None
+    summary: Annotated[str | None, Field(description='Brief summary of the offering')] = None
+    tagline: Annotated[str | None, Field(description='Short promotional tagline')] = None
     expires_at: Annotated[AwareDatetime | None, Field(description='When this offering expires')] = (
         None
     )
-    image_url: Annotated[AnyUrl | None, Field(description='Hero image for the offering')] = None
-    landing_url: Annotated[AnyUrl | None, Field(description='Landing page URL')] = None
-    offering_id: Annotated[str | None, Field(description='Offering identifier')] = None
     price_hint: Annotated[
         str | None, Field(description="Price indication (e.g., 'from $199', '50% off')")
     ] = None
-    summary: Annotated[str | None, Field(description='Brief summary of the offering')] = None
-    tagline: Annotated[str | None, Field(description='Short promotional tagline')] = None
-    title: Annotated[str | None, Field(description='Offering title')] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Hero image for the offering')] = None
+    landing_url: Annotated[AnyUrl | None, Field(description='Landing page URL')] = None
 
 
-class SiGetOfferingResponse(AdCPBaseModel):
+class MatchingProduct(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    alternative_offering_ids: Annotated[
-        list[str] | None,
-        Field(description='Alternative offerings to consider if this one is unavailable'),
-    ] = None
-    available: Annotated[bool, Field(description='Whether the offering is currently available')]
-    checked_at: Annotated[
-        AwareDatetime | None, Field(description='When this offering information was retrieved')
-    ] = None
-    errors: Annotated[
-        list[error.Error] | None, Field(description='Errors during offering lookup')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
-    matching_products: Annotated[
-        list[MatchingProduct] | None,
+    product_id: Annotated[str, Field(description='Product identifier')]
+    name: Annotated[str, Field(description='Product name')]
+    price: Annotated[str | None, Field(description="Display price (e.g., '$129', '$89.99')")] = None
+    original_price: Annotated[str | None, Field(description='Original price if on sale')] = None
+    image_url: Annotated[AnyUrl | None, Field(description='Product image')] = None
+    availability_summary: Annotated[
+        str | None,
         Field(
-            description='Products matching the request context. Only included if include_products was true.'
+            description="Brief availability info (e.g., 'In stock', 'Size 14 available', '3 left')"
         ),
     ] = None
-    offering: Annotated[Offering | None, Field(description='Offering details')] = None
+    url: Annotated[AnyUrl | None, Field(description='Product detail page URL')] = None
+
+
+class SiGetOfferingResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available: Annotated[bool, Field(description='Whether the offering is currently available')]
     offering_token: Annotated[
         str | None,
         Field(
             description="Token to pass to si_initiate_session for session continuity. Brand stores the full query context server-side (products shown, order, context) so they can resolve references like 'the second one' when the session starts."
         ),
     ] = None
-    total_matching: Annotated[
+    ttl_seconds: Annotated[
         int | None,
         Field(
-            description='Total number of products matching the context (may be more than returned in matching_products)',
+            description='How long this offering information is valid (seconds). Host should re-fetch after TTL expires.',
             ge=0,
         ),
     ] = None
-    ttl_seconds: Annotated[
+    checked_at: Annotated[
+        AwareDatetime | None, Field(description='When this offering information was retrieved')
+    ] = None
+    offering: Annotated[Offering | None, Field(description='Offering details')] = None
+    matching_products: Annotated[
+        list[MatchingProduct] | None,
+        Field(
+            description='Products matching the request context. Only included if include_products was true.'
+        ),
+    ] = None
+    total_matching: Annotated[
         int | None,
         Field(
-            description='How long this offering information is valid (seconds). Host should re-fetch after TTL expires.',
+            description='Total number of products matching the context (may be more than returned in matching_products)',
             ge=0,
         ),
     ] = None
@@ -98,3 +91,12 @@ class SiGetOfferingResponse(AdCPBaseModel):
             description="If not available, why (e.g., 'expired', 'sold_out', 'region_restricted')"
         ),
     ] = None
+    alternative_offering_ids: Annotated[
+        list[str] | None,
+        Field(description='Alternative offerings to consider if this one is unavailable'),
+    ] = None
+    errors: Annotated[
+        list[error.Error] | None, Field(description='Errors during offering lookup')
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_identity.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_identity.py
index 4c758841c..8fe6cd320 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_identity.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_identity.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_identity.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -35,11 +35,11 @@ class ShippingAddress(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    street: str | None = None
     city: str | None = None
-    country: str | None = None
-    postal_code: str | None = None
     state: str | None = None
-    street: str | None = None
+    postal_code: str | None = None
+    country: str | None = None
 
 
 class User(AdCPBaseModel):
@@ -47,8 +47,8 @@ class User(AdCPBaseModel):
         extra='allow',
     )
     email: Annotated[EmailStr | None, Field(description="User's email address")] = None
-    locale: Annotated[str | None, Field(description="User's locale (e.g., en-US)")] = None
     name: Annotated[str | None, Field(description="User's display name")] = None
+    locale: Annotated[str | None, Field(description="User's locale (e.g., en-US)")] = None
     phone: Annotated[str | None, Field(description="User's phone number")] = None
     shipping_address: Annotated[
         ShippingAddress | None, Field(description="User's shipping address for accurate pricing")
@@ -59,20 +59,20 @@ class SiIdentity(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    anonymous_session_id: Annotated[
-        str | None,
-        Field(description='Session ID for anonymous users (when consent_granted is false)'),
-    ] = None
     consent_granted: Annotated[bool, Field(description='Whether user consented to share identity')]
-    consent_scope: Annotated[
-        list[ConsentScopeEnum] | None, Field(description='What data was consented to share')
-    ] = None
     consent_timestamp: Annotated[
         AwareDatetime | None, Field(description='When consent was granted (ISO 8601)')
     ] = None
+    consent_scope: Annotated[
+        list[ConsentScopeEnum] | None, Field(description='What data was consented to share')
+    ] = None
     privacy_policy_acknowledged: Annotated[
         PrivacyPolicyAcknowledged | None, Field(description='Brand privacy policy acknowledgment')
     ] = None
     user: Annotated[
         User | None, Field(description='User data (only present if consent_granted is true)')
     ] = None
+    anonymous_session_id: Annotated[
+        str | None,
+        Field(description='Session ID for anonymous users (when consent_granted is false)'),
+    ] = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_request.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_request.py
index 8566d7c0f..cd477ebdd 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_request.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_initiate_session_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,38 +17,47 @@ class SiInitiateSessionRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: Annotated[
-        str, Field(description='Conversation handoff from the host describing what the user needs')
-    ]
-    ext: ext_1.ExtensionObject | None = None
-    idempotency_key: Annotated[
-        str | None,
+    adcp_major_version: Annotated[
+        int | None,
         Field(
-            description='Client-generated unique key for this request. Prevents duplicate session creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
-            max_length=255,
-            min_length=16,
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
+    context: Annotated[
+        str, Field(description='Conversation handoff from the host describing what the user needs')
+    ]
     identity: si_identity.SiIdentity
     media_buy_id: Annotated[
         str | None, Field(description='AdCP media buy ID if session was triggered by advertising')
     ] = None
+    placement: Annotated[
+        str | None,
+        Field(
+            description="Where this session was triggered (e.g., 'chatgpt_search', 'claude_chat')"
+        ),
+    ] = None
     offering_id: Annotated[
         str | None, Field(description='Brand-specific offering identifier to apply')
     ] = None
+    supported_capabilities: Annotated[
+        si_capabilities.SiCapabilities | None,
+        Field(description='What capabilities the host supports'),
+    ] = None
     offering_token: Annotated[
         str | None,
         Field(
             description="Token from si_get_offering response for session continuity. Brand uses this to recall what products were shown to the user, enabling natural references like 'the second one' or 'that blue shoe'."
         ),
     ] = None
-    placement: Annotated[
-        str | None,
+    idempotency_key: Annotated[
+        str,
         Field(
-            description="Where this session was triggered (e.g., 'chatgpt_search', 'claude_chat')"
+            description='Client-generated unique key for this request. Prevents duplicate session creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
         ),
-    ] = None
-    supported_capabilities: Annotated[
-        si_capabilities.SiCapabilities | None,
-        Field(description='What capabilities the host supports'),
-    ] = None
+    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_response.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_response.py
index 9922690a0..522d8d5b8 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_response.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_initiate_session_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_initiate_session_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import error
 from ..core import ext as ext_1
 from ..enums import si_session_status
@@ -31,18 +32,14 @@ class SiInitiateSessionResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    errors: Annotated[
-        list[error.Error] | None, Field(description='Errors during session initiation')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
+    session_id: Annotated[
+        str, Field(description='Unique session identifier for subsequent messages')
+    ]
+    response: Annotated[Response | None, Field(description="Brand agent's initial response")] = None
     negotiated_capabilities: Annotated[
         si_capabilities.SiCapabilities | None,
         Field(description='Intersection of brand and host capabilities for this session'),
     ] = None
-    response: Annotated[Response | None, Field(description="Brand agent's initial response")] = None
-    session_id: Annotated[
-        str, Field(description='Unique session identifier for subsequent messages')
-    ]
     session_status: Annotated[
         si_session_status.SiSessionStatus,
         Field(
@@ -56,3 +53,8 @@ class SiInitiateSessionResponse(AdCPBaseModel):
             ge=1,
         ),
     ] = None
+    errors: Annotated[
+        list[error.Error] | None, Field(description='Errors during session initiation')
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_request.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_request.py
index a3949b7e1..608e437fa 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_request.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_send_message_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 
 
@@ -26,10 +27,28 @@ class SiSendMessageRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str,
+        Field(
+            description='Client-generated unique key for at-most-once execution. Each conversational turn is a distinct mutation of session transcript — without this key, a timeout-and-retry produces a duplicate turn and a duplicate model response. MUST be unique per (seller, request) pair. Use a fresh UUID v4 for each user turn.',
+            max_length=255,
+            min_length=16,
+            pattern='^[A-Za-z0-9_.:-]{16,255}$',
+        ),
+    ]
+    session_id: Annotated[str, Field(description='Active session identifier')]
+    message: Annotated[str | None, Field(description="User's message to the brand agent")] = None
     action_response: Annotated[
         ActionResponse | None,
         Field(description='Response to a previous action_button (e.g., user clicked checkout)'),
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    message: Annotated[str | None, Field(description="User's message to the brand agent")] = None
-    session_id: Annotated[str, Field(description='Active session identifier')]
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py
index 4da93c25d..dd19f21bf 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_send_message_response.json
-#   timestamp: 2026-04-16T02:55:59+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -11,22 +11,16 @@
 from pydantic import ConfigDict, Field
 
 from ..a2ui import surface as surface_1
+from ..core import context as context_1
 from ..core import error
 from ..core import ext as ext_1
 from ..enums import si_session_status
 from . import si_ui_element
 
 
-class ContextForCheckout(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    applied_offers: Annotated[
-        list[str] | None, Field(description='Offer IDs that were applied during the conversation')
-    ] = None
-    conversation_summary: Annotated[
-        str | None, Field(description='Summary of the conversation leading to purchase')
-    ] = None
+class Type(Enum):
+    transaction = 'transaction'
+    complete = 'complete'
 
 
 class Price(AdCPBaseModel):
@@ -41,34 +35,41 @@ class Intent(AdCPBaseModel):
     action: Annotated[str | None, Field(description="The commerce action (e.g., 'purchase')")] = (
         None
     )
-    price: Annotated[Price | None, Field(description='Price information')] = None
     product: Annotated[dict[str, Any] | None, Field(description='Product details for checkout')] = (
         None
     )
+    price: Annotated[Price | None, Field(description='Price information')] = None
 
 
-class Type(Enum):
-    transaction = 'transaction'
-    complete = 'complete'
+class ContextForCheckout(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    conversation_summary: Annotated[
+        str | None, Field(description='Summary of the conversation leading to purchase')
+    ] = None
+    applied_offers: Annotated[
+        list[str] | None, Field(description='Offer IDs that were applied during the conversation')
+    ] = None
 
 
 class Handoff(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context_for_checkout: Annotated[
-        ContextForCheckout | None, Field(description='Context to pass to ACP for seamless checkout')
-    ] = None
-    intent: Annotated[
-        Intent | None,
-        Field(description='For transaction handoffs: what the user wants to purchase'),
-    ] = None
     type: Annotated[
         Type | None,
         Field(
             description='Type of handoff: transaction (ready for ACP checkout) or complete (conversation done)'
         ),
     ] = None
+    intent: Annotated[
+        Intent | None,
+        Field(description='For transaction handoffs: what the user wants to purchase'),
+    ] = None
+    context_for_checkout: Annotated[
+        ContextForCheckout | None, Field(description='Context to pass to ACP for seamless checkout')
+    ] = None
 
 
 class Response(AdCPBaseModel):
@@ -83,7 +84,10 @@ class Response(AdCPBaseModel):
     ] = None
     ui_elements: Annotated[
         list[si_ui_element.SiUiElement] | None,
-        Field(description='Visual components to render (DEPRECATED: use surface instead)'),
+        Field(
+            deprecated=True,
+            description='Visual components to render (DEPRECATED: use surface instead)',
+        ),
     ] = None
 
 
@@ -91,22 +95,23 @@ class SiSendMessageResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    errors: list[error.Error] | None = None
-    ext: ext_1.ExtensionObject | None = None
-    handoff: Annotated[
-        Handoff | None, Field(description='Handoff request when session_status is pending_handoff')
-    ] = None
+    session_id: Annotated[str, Field(description='Session identifier')]
+    response: Annotated[Response | None, Field(description="Brand agent's response")] = None
     mcp_resource_uri: Annotated[
         str | None,
         Field(
             description='MCP resource URI for hosts with MCP Apps support (e.g., ui://si/session-abc123)'
         ),
     ] = None
-    response: Annotated[Response | None, Field(description="Brand agent's response")] = None
-    session_id: Annotated[str, Field(description='Session identifier')]
     session_status: Annotated[
         si_session_status.SiSessionStatus,
         Field(
             description='Current session status. On a successful response, one of: active, pending_handoff, or complete. Terminated sessions return error codes (SESSION_NOT_FOUND or SESSION_TERMINATED) instead of a success response.'
         ),
     ]
+    handoff: Annotated[
+        Handoff | None, Field(description='Handoff request when session_status is pending_handoff')
+    ] = None
+    errors: list[error.Error] | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_request.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_request.py
index 538708d36..638cc9961 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_request.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_terminate_session_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,6 +10,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import ext as ext_1
 
 
@@ -38,23 +39,32 @@ class TerminationContext(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    cause: Annotated[
-        str | None, Field(description='For host_terminated - why host ended session')
-    ] = None
     summary: Annotated[str | None, Field(description='Summary of the conversation')] = None
     transaction_intent: Annotated[
         TransactionIntent | None,
         Field(description='For handoff_transaction - what user wants to buy'),
     ] = None
+    cause: Annotated[
+        str | None, Field(description='For host_terminated - why host ended session')
+    ] = None
 
 
 class SiTerminateSessionRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    ext: ext_1.ExtensionObject | None = None
-    reason: Annotated[Reason, Field(description='Reason for termination')]
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     session_id: Annotated[str, Field(description='Session identifier to terminate')]
+    reason: Annotated[Reason, Field(description='Reason for termination')]
     termination_context: Annotated[
         TerminationContext | None, Field(description='Context for the termination')
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_response.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_response.py
index aeac39e51..73db3e69f 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_response.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_terminate_session_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_terminate_session_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -10,6 +10,7 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
+from ..core import context as context_1
 from ..core import error
 from ..core import ext as ext_1
 from ..enums import si_session_status
@@ -19,22 +20,16 @@ class AcpHandoff(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    checkout_token: Annotated[
-        str | None,
-        Field(
-            description='Opaque token for the checkout flow. The host passes this to the checkout endpoint to correlate the SI session with the transaction.'
-        ),
-    ] = None
     checkout_url: Annotated[
         AnyUrl | None,
         Field(
             description="Brand's ACP checkout endpoint. Hosts MUST validate this is HTTPS before opening."
         ),
     ] = None
-    expires_at: Annotated[
-        AwareDatetime | None,
+    checkout_token: Annotated[
+        str | None,
         Field(
-            description='When this handoff data expires. Hosts should initiate checkout before this time.'
+            description='Opaque token for the checkout flow. The host passes this to the checkout endpoint to correlate the SI session with the transaction.'
         ),
     ] = None
     payload: Annotated[
@@ -43,6 +38,12 @@ class AcpHandoff(AdCPBaseModel):
             description='Rich checkout context to pass to the ACP endpoint (product details, applied offers, pricing). Alternative to checkout_token for integrations that need structured data.'
         ),
     ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='When this handoff data expires. Hosts should initiate checkout before this time.'
+        ),
+    ] = None
 
 
 class Action(Enum):
@@ -64,18 +65,19 @@ class SiTerminateSessionResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    acp_handoff: Annotated[
-        AcpHandoff | None,
-        Field(description='ACP checkout handoff data. Present when reason is handoff_transaction.'),
-    ] = None
-    errors: list[error.Error] | None = None
-    ext: ext_1.ExtensionObject | None = None
-    follow_up: Annotated[FollowUp | None, Field(description='Suggested follow-up actions')] = None
     session_id: Annotated[str, Field(description='Terminated session identifier')]
+    terminated: Annotated[bool, Field(description='Whether session was successfully terminated')]
     session_status: Annotated[
         si_session_status.SiSessionStatus | None,
         Field(
             description="Resulting session state. 'complete' for handoff_transaction/handoff_complete, 'terminated' for user_exit/session_timeout/host_terminated."
         ),
     ] = None
-    terminated: Annotated[bool, Field(description='Whether session was successfully terminated')]
+    acp_handoff: Annotated[
+        AcpHandoff | None,
+        Field(description='ACP checkout handoff data. Present when reason is handoff_transaction.'),
+    ] = None
+    follow_up: Annotated[FollowUp | None, Field(description='Suggested follow-up actions')] = None
+    errors: list[error.Error] | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_ui_element.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_ui_element.py
index 6d29e27b0..3b43be7df 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_ui_element.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_ui_element.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_ui_element.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -26,5 +26,5 @@ class SiUiElement(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    data: Annotated[dict[str, Any] | None, Field(description='Component-specific data')] = None
     type: Annotated[Type, Field(description='Component type')]
+    data: Annotated[dict[str, Any] | None, Field(description='Component-specific data')] = None
diff --git a/src/adcp/types/generated_poc/tmp/available_package.py b/src/adcp/types/generated_poc/tmp/available_package.py
index b2fcb4e86..6ba441966 100644
--- a/src/adcp/types/generated_poc/tmp/available_package.py
+++ b/src/adcp/types/generated_poc/tmp/available_package.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  tmp/available_package.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -16,17 +16,17 @@ class AvailablePackage(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    catalogs: Annotated[
-        list[catalog.Catalog] | None,
-        Field(
-            description="The buyer's catalogs attached to this package, with selectors (ids, gtins, tags, category, query) scoping which items are in play. References synced catalogs by catalog_id. The provider resolves items from its cached copy."
-        ),
-    ] = None
+    package_id: Annotated[str, Field(description='Unique identifier for the package')]
+    media_buy_id: Annotated[str, Field(description='Media buy that this package belongs to')]
     format_ids: Annotated[
         list[format_id.FormatId] | None,
         Field(
             description='Creative format identifiers eligible for this package. Uses the standard AdCP format-id object with agent_url and id for unambiguous format resolution across namespaces.'
         ),
     ] = None
-    media_buy_id: Annotated[str, Field(description='Media buy that this package belongs to')]
-    package_id: Annotated[str, Field(description='Unique identifier for the package')]
+    catalogs: Annotated[
+        list[catalog.Catalog] | None,
+        Field(
+            description="The buyer's catalogs attached to this package, with selectors (ids, gtins, tags, category, query) scoping which items are in play. References synced catalogs by catalog_id. The provider resolves items from its cached copy."
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/tmp/context_match_request.py b/src/adcp/types/generated_poc/tmp/context_match_request.py
index 95ad6f129..913329eca 100644
--- a/src/adcp/types/generated_poc/tmp/context_match_request.py
+++ b/src/adcp/types/generated_poc/tmp/context_match_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  tmp/context_match_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -47,10 +47,6 @@ class ArtifactRef(AdCPBaseModel):
     ]
 
 
-class Keyword(RootModel[str]):
-    root: Annotated[str, Field(max_length=100)]
-
-
 class Sentiment(Enum):
     positive = 'positive'
     negative = 'negative'
@@ -58,36 +54,35 @@ class Sentiment(Enum):
     mixed = 'mixed'
 
 
+class Keyword(RootModel[str]):
+    root: Annotated[str, Field(max_length=100)]
+
+
 class ContextSignals(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    content_policies: Annotated[
+    topics: Annotated[
         list[str] | None,
         Field(
-            description="Policy IDs from the AdCP policy registry that this content satisfies (e.g., 'common_sense_brand_safety' for Common Sense Brand Standards baseline). Buyers filter on policies they require. An empty array means no policies have been evaluated.",
-            max_length=20,
+            description="Content topic identifiers. Use IAB Content Taxonomy 3.0 IDs (e.g., '632' for Food & Drink) when taxonomy_id is 7, or human-readable strings (e.g., 'cooking.pasta') for custom taxonomies.",
+            max_length=50,
         ),
     ] = None
-    embedding: Annotated[
+    taxonomy_source: Annotated[
         str | None,
         Field(
-            description='Content embedding as base64-encoded int8 vector. Captures semantic content beyond what topics and keywords express. Publishers declare the model used. For standardized matching, use the protocol-recommended model (nomic-embed-text-v1.5, 256 dims, int8 quantized = 256 bytes).'
+            description="Organization that defines the topic taxonomy. Use 'iab' for IAB Content Taxonomy. Publishers may use other values for custom taxonomies."
         ),
-    ] = None
-    embedding_dims: Annotated[
+    ] = 'iab'
+    taxonomy_id: Annotated[
         int | None,
         Field(
-            description='Number of dimensions in the embedding vector. Required when embedding is present.',
-            ge=64,
-            le=2048,
-        ),
-    ] = None
-    embedding_model: Annotated[
-        str | None,
-        Field(
-            description="Embedding model identifier (e.g., 'nomic-embed-text-v1.5'). Required when embedding is present."
+            description='Taxonomy version within the source. For IAB, follows the AdCOM cattax enum: 7 = Content Taxonomy 3.0. Default: 7.'
         ),
+    ] = 7
+    sentiment: Annotated[
+        Sentiment | None, Field(description='Content sentiment classification.')
     ] = None
     keywords: Annotated[
         list[Keyword] | None,
@@ -102,8 +97,12 @@ class ContextSignals(AdCPBaseModel):
             pattern='^[a-z]{2}$',
         ),
     ] = None
-    sentiment: Annotated[
-        Sentiment | None, Field(description='Content sentiment classification.')
+    content_policies: Annotated[
+        list[str] | None,
+        Field(
+            description="Policy IDs from the AdCP policy registry that this content satisfies (e.g., 'csbs' for Common Sense Brand Standards). Buyers filter on policies they require. An empty array means no policies have been evaluated.",
+            max_length=20,
+        ),
     ] = None
     summary: Annotated[
         str | None,
@@ -112,23 +111,24 @@ class ContextSignals(AdCPBaseModel):
             max_length=500,
         ),
     ] = None
-    taxonomy_id: Annotated[
-        int | None,
+    embedding: Annotated[
+        str | None,
         Field(
-            description='Taxonomy version within the source. For IAB, follows the AdCOM cattax enum: 7 = Content Taxonomy 3.0. Default: 7.'
+            description='Content embedding as base64-encoded int8 vector. Captures semantic content beyond what topics and keywords express. Publishers declare the model used. For standardized matching, use the protocol-recommended model (nomic-embed-text-v1.5, 256 dims, int8 quantized = 256 bytes).'
         ),
-    ] = 7
-    taxonomy_source: Annotated[
+    ] = None
+    embedding_model: Annotated[
         str | None,
         Field(
-            description="Organization that defines the topic taxonomy. Use 'iab' for IAB Content Taxonomy. Publishers may use other values for custom taxonomies."
+            description="Embedding model identifier (e.g., 'nomic-embed-text-v1.5'). Required when embedding is present."
         ),
-    ] = 'iab'
-    topics: Annotated[
-        list[str] | None,
+    ] = None
+    embedding_dims: Annotated[
+        int | None,
         Field(
-            description="Content topic identifiers. Use IAB Content Taxonomy 3.0 IDs (e.g., '632' for Food & Drink) when taxonomy_id is 7, or human-readable strings (e.g., 'cooking.pasta') for custom taxonomies.",
-            max_length=50,
+            description='Number of dimensions in the embedding vector. Required when embedding is present.',
+            ge=64,
+            le=2048,
         ),
     ] = None
 
@@ -157,10 +157,6 @@ class Geo(AdCPBaseModel):
             pattern='^[A-Z]{2}$',
         ),
     ] = None
-    metro: Annotated[
-        Metro | None,
-        Field(description='Metro area, using the same classification systems as AdCP targeting.'),
-    ] = None
     region: Annotated[
         str | None,
         Field(
@@ -168,18 +164,67 @@ class Geo(AdCPBaseModel):
             pattern='^[A-Z]{2}-[A-Z0-9]{1,3}$',
         ),
     ] = None
+    metro: Annotated[
+        Metro | None,
+        Field(description='Metro area, using the same classification systems as AdCP targeting.'),
+    ] = None
 
 
 class ContextMatchRequest(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
     field_schema: Annotated[
         AnyUrl | None,
         Field(
             alias='$schema', description='Optional schema URI for validation. Ignored at runtime.'
         ),
     ] = None
+    type: Annotated[
+        Literal['context_match_request'],
+        Field(description='Message type discriminator for deserialization.'),
+    ]
+    protocol_version: Annotated[
+        str | None,
+        Field(
+            description='TMP protocol version. Allows receivers to handle semantic differences across versions.'
+        ),
+    ] = '1.0'
+    request_id: Annotated[
+        str,
+        Field(
+            description='Unique request identifier. MUST NOT correlate with any identity match request_id.'
+        ),
+    ]
+    property_rid: Annotated[
+        UUID,
+        Field(
+            description='Property catalog UUID (UUID v7). Globally unique, stable identifier assigned by the property catalog. The primary key for TMP matching and property list targeting.'
+        ),
+    ]
+    property_id: Annotated[
+        property_id_1.PropertyId | None,
+        Field(
+            description="Publisher's human-readable property slug (e.g., 'cnn_homepage'). Optional when property_rid is present. Useful for logging and debugging."
+        ),
+    ] = None
+    property_type: Annotated[
+        property_type_1.PropertyType, Field(description='Type of the publisher property')
+    ]
+    placement_id: Annotated[
+        str,
+        Field(
+            description="Placement identifier from the publisher's placement registry in adagents.json. Identifies where on the property this ad opportunity exists. One placement per request."
+        ),
+    ]
     artifact: Annotated[
         artifact_1.Artifact | None,
         Field(
@@ -194,18 +239,18 @@ class ContextMatchRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    context_signals: Annotated[
-        ContextSignals | None,
-        Field(
-            description='Pre-computed classifier outputs for the content environment. Use when the publisher wants to provide classified context without sharing content or public references. Can supplement artifact_refs (e.g., URL + pre-classified topics) or replace them entirely (e.g., ephemeral conversation turns). Raw content MUST NOT be included — only classified outputs. The publisher is the classifier boundary.'
-        ),
-    ] = None
     geo: Annotated[
         Geo | None,
         Field(
             description='Coarse geographic location of the viewer. Publisher controls granularity — country is sufficient for regulatory compliance and volume filtering, region or metro helps with campaign targeting and valuation. Coarsened to prevent user identification: no postcode, no coordinates. All fields optional.'
         ),
     ] = None
+    context_signals: Annotated[
+        ContextSignals | None,
+        Field(
+            description='Pre-computed classifier outputs for the content environment. Use when the publisher wants to provide classified context without sharing content or public references. Can supplement artifact_refs (e.g., URL + pre-classified topics) or replace them entirely (e.g., ephemeral conversation turns). Raw content MUST NOT be included — only classified outputs. The publisher is the classifier boundary.'
+        ),
+    ] = None
     package_ids: Annotated[
         list[str] | None,
         Field(
@@ -214,40 +259,3 @@ class ContextMatchRequest(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    placement_id: Annotated[
-        str,
-        Field(
-            description="Placement identifier from the publisher's placement registry in adagents.json. Identifies where on the property this ad opportunity exists. One placement per request."
-        ),
-    ]
-    property_id: Annotated[
-        property_id_1.PropertyId | None,
-        Field(
-            description="Publisher's human-readable property slug (e.g., 'cnn_homepage'). Optional when property_rid is present. Useful for logging and debugging."
-        ),
-    ] = None
-    property_rid: Annotated[
-        UUID,
-        Field(
-            description='Property catalog UUID (UUID v7). Globally unique, stable identifier assigned by the property catalog. The primary key for TMP matching and property list targeting.'
-        ),
-    ]
-    property_type: Annotated[
-        property_type_1.PropertyType, Field(description='Type of the publisher property')
-    ]
-    protocol_version: Annotated[
-        str | None,
-        Field(
-            description='TMP protocol version. Allows receivers to handle semantic differences across versions.'
-        ),
-    ] = '1.0'
-    request_id: Annotated[
-        str,
-        Field(
-            description='Unique request identifier. MUST NOT correlate with any identity match request_id.'
-        ),
-    ]
-    type: Annotated[
-        Literal['context_match_request'],
-        Field(description='Message type discriminator for deserialization.'),
-    ]
diff --git a/src/adcp/types/generated_poc/tmp/context_match_response.py b/src/adcp/types/generated_poc/tmp/context_match_response.py
index 3312fd532..6a44302c7 100644
--- a/src/adcp/types/generated_poc/tmp/context_match_response.py
+++ b/src/adcp/types/generated_poc/tmp/context_match_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  tmp/context_match_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -36,6 +36,19 @@ class ContextMatchResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    type: Annotated[
+        Literal['context_match_response'],
+        Field(description='Message type discriminator for deserialization.'),
+    ]
+    request_id: Annotated[
+        str, Field(description='Echoed request identifier from the context match request')
+    ]
+    offers: Annotated[
+        list[offer.Offer],
+        Field(
+            description='Offers from the buyer, one per activated package. An empty array means no packages matched. For simple activation, each offer has just package_id. For richer responses, offers include brand, price, summary, and creative manifest.'
+        ),
+    ]
     cache_ttl: Annotated[
         int | None,
         Field(
@@ -44,22 +57,9 @@ class ContextMatchResponse(AdCPBaseModel):
             le=86400,
         ),
     ] = None
-    offers: Annotated[
-        list[offer.Offer],
-        Field(
-            description='Offers from the buyer, one per activated package. An empty array means no packages matched. For simple activation, each offer has just package_id. For richer responses, offers include brand, price, summary, and creative manifest.'
-        ),
-    ]
-    request_id: Annotated[
-        str, Field(description='Echoed request identifier from the context match request')
-    ]
     signals: Annotated[
         Signals | None,
         Field(
             description='Response-level targeting signals for ad server pass-through. In the GAM case, these carry the key-value pairs that trigger line items. Not per-offer — applies to the response as a whole.'
         ),
     ] = None
-    type: Annotated[
-        Literal['context_match_response'],
-        Field(description='Message type discriminator for deserialization.'),
-    ]
diff --git a/src/adcp/types/generated_poc/tmp/error.py b/src/adcp/types/generated_poc/tmp/error.py
index beca09285..f1e37a86e 100644
--- a/src/adcp/types/generated_poc/tmp/error.py
+++ b/src/adcp/types/generated_poc/tmp/error.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  tmp/error.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -24,13 +24,13 @@ class TmpError(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    type: Annotated[
+        Literal['error'], Field(description='Message type discriminator for deserialization.')
+    ]
+    request_id: Annotated[
+        str, Field(description='Echoed request identifier from the original request')
+    ]
     code: Annotated[Code, Field(description='Machine-readable error code')]
     message: Annotated[
         str | None, Field(description='Human-readable error description for debugging')
     ] = None
-    request_id: Annotated[
-        str, Field(description='Echoed request identifier from the original request')
-    ]
-    type: Annotated[
-        Literal['error'], Field(description='Message type discriminator for deserialization.')
-    ]
diff --git a/src/adcp/types/generated_poc/tmp/identity_match_request.py b/src/adcp/types/generated_poc/tmp/identity_match_request.py
index a403096db..334668d2d 100644
--- a/src/adcp/types/generated_poc/tmp/identity_match_request.py
+++ b/src/adcp/types/generated_poc/tmp/identity_match_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  tmp/identity_match_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -17,10 +17,10 @@ class Consent(AdCPBaseModel):
         extra='forbid',
     )
     gdpr: Annotated[bool | None, Field(description='Whether GDPR applies to this request.')] = None
-    gpp: Annotated[str | None, Field(description='IAB Global Privacy Platform string.')] = None
     tcf_consent: Annotated[
         str | None, Field(description='IAB TCF v2.2 consent string. Present when gdpr is true.')
     ] = None
+    gpp: Annotated[str | None, Field(description='IAB Global Privacy Platform string.')] = None
     us_privacy: Annotated[
         str | None,
         Field(
@@ -29,28 +29,45 @@ class Consent(AdCPBaseModel):
     ] = None
 
 
-class IdentityMatchRequest(AdCPBaseModel):
+class Identity(AdCPBaseModel):
     model_config = ConfigDict(
         extra='forbid',
     )
-    field_schema: Annotated[
-        AnyUrl | None,
+    user_token: Annotated[
+        str,
         Field(
-            alias='$schema', description='Optional schema URI for validation. Ignored at runtime.'
+            description='Opaque token from an identity provider (ID5, LiveRamp, UID2) or publisher-generated. Buyer may map to internal identity graph but cannot reverse to PII.'
         ),
-    ] = None
-    consent: Annotated[
-        Consent | None,
+    ]
+    uid_type: Annotated[
+        uid_type_1.UidType,
         Field(
-            description='Privacy consent signals. Buyers in regulated jurisdictions MUST NOT process the user token without consent information.'
+            description='Type of the user identifier. Tells the buyer which identity graph to resolve against, avoiding trial-and-error matching.'
+        ),
+    ]
+
+
+class IdentityMatchRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
         ),
     ] = None
-    package_ids: Annotated[
-        list[str],
+    field_schema: Annotated[
+        AnyUrl | None,
         Field(
-            description='ALL active package identifiers for this buyer at this publisher. MUST include every active package, not just those on the current page, to prevent correlation with Context Match requests.',
-            min_length=1,
+            alias='$schema', description='Optional schema URI for validation. Ignored at runtime.'
         ),
+    ] = None
+    type: Annotated[
+        Literal['identity_match_request'],
+        Field(description='Message type discriminator for deserialization.'),
     ]
     protocol_version: Annotated[
         str | None,
@@ -64,19 +81,31 @@ class IdentityMatchRequest(AdCPBaseModel):
             description='Unique request identifier. MUST NOT correlate with any context match request_id.'
         ),
     ]
-    type: Annotated[
-        Literal['identity_match_request'],
-        Field(description='Message type discriminator for deserialization.'),
-    ]
-    uid_type: Annotated[
-        uid_type_1.UidType,
+    identities: Annotated[
+        list[Identity],
         Field(
-            description='Type of the user identifier. Tells the buyer which identity graph to resolve against, avoiding trial-and-error matching.'
+            description='Identity tokens for the user, each tagged with its type. Publishers SHOULD include every token they have available — the buyer resolves on whichever graph matches. Entry order is not semantically significant; buyers use their own preference order when multiple entries resolve. Duplicate `(uid_type, user_token)` pairs MUST NOT appear; routers MAY reject or dedupe. `maxItems: 3` matches the TMPX plaintext budget (~120 bytes after HPKE overhead fits three 32-byte tokens); exceeding it forces buyer-side truncation.',
+            max_length=3,
+            min_length=1,
         ),
     ]
-    user_token: Annotated[
-        str,
+    consent: Annotated[
+        Consent | None,
         Field(
-            description='Opaque token from an identity provider (ID5, LiveRamp, UID2) or publisher-generated'
+            description='Privacy consent signals. Buyers in regulated jurisdictions MUST NOT process the user token without consent information.'
+        ),
+    ] = None
+    package_ids: Annotated[
+        list[str],
+        Field(
+            description='ALL active package identifiers for this buyer at this publisher. MUST include every active package, not just those on the current page, to prevent correlation with Context Match requests.',
+            min_length=1,
         ),
     ]
+    country: Annotated[
+        str | None,
+        Field(
+            description='ISO 3166-1 alpha-2 country code. Routing directive for the TMP Router — used to select the correct regional provider. The router MUST strip this field before forwarding the request to the buyer agent. Not an identity signal.',
+            pattern='^[A-Z]{2}$',
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/tmp/identity_match_response.py b/src/adcp/types/generated_poc/tmp/identity_match_response.py
index d7aaa47e5..aeaeb0649 100644
--- a/src/adcp/types/generated_poc/tmp/identity_match_response.py
+++ b/src/adcp/types/generated_poc/tmp/identity_match_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  tmp/identity_match_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -14,15 +14,19 @@ class IdentityMatchResponse(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    type: Annotated[
+        Literal['identity_match_response'],
+        Field(description='Message type discriminator for deserialization.'),
+    ]
+    request_id: Annotated[
+        str, Field(description='Echoed request identifier from the identity match request')
+    ]
     eligible_package_ids: Annotated[
         list[str],
         Field(
             description='Package IDs the user is eligible for. Packages not listed are ineligible.'
         ),
     ]
-    request_id: Annotated[
-        str, Field(description='Echoed request identifier from the identity match request')
-    ]
     ttl_sec: Annotated[
         int,
         Field(
@@ -31,7 +35,9 @@ class IdentityMatchResponse(AdCPBaseModel):
             le=86400,
         ),
     ]
-    type: Annotated[
-        Literal['identity_match_response'],
-        Field(description='Message type discriminator for deserialization.'),
-    ]
+    tmpx: Annotated[
+        str | None,
+        Field(
+            description="HPKE-encrypted exposure token containing the resolved user identity tokens. The publisher substitutes this into creative tracking URLs as {TMPX}. The buyer's impression pixel receives the token at serve time, enabling real-time per-user frequency state updates. Wire format: kid.base64url_nopad(ciphertext) — unpadded base64url per RFC 4648 section 5 (no = characters). Publishers MUST treat this value as opaque pass-through data."
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/tmp/offer.py b/src/adcp/types/generated_poc/tmp/offer.py
index 92f96986e..f6f51b6e8 100644
--- a/src/adcp/types/generated_poc/tmp/offer.py
+++ b/src/adcp/types/generated_poc/tmp/offer.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  tmp/offer.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-18T19:31:26+00:00
 
 from __future__ import annotations
 
@@ -18,25 +18,13 @@ class Offer(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    package_id: Annotated[str, Field(description='Package identifier from the media buy.')]
     brand: Annotated[
         brand_ref.BrandReference | None,
         Field(
             description='Brand for this offer. Required when the product allows dynamic brands (brand selected at match time rather than fixed on the package). For single-brand packages, the brand is already known from the media buy.'
         ),
     ] = None
-    creative_manifest: Annotated[
-        creative_manifest_1.CreativeManifest | None,
-        Field(
-            description='Full creative details, inline. When present, the publisher has everything needed to render. Inline for small creatives (markdown, product card). For large creatives (VAST, video), the manifest references external assets via URLs.'
-        ),
-    ] = None
-    macros: Annotated[
-        dict[str, str] | None,
-        Field(
-            description='Key-value pairs the buyer passes for dynamic creative rendering or attribution tracking. In the GAM case, these flow as macro values. Not tied to user identity — attribution reconciliation happens via delivery reporting or clean room.'
-        ),
-    ] = None
-    package_id: Annotated[str, Field(description='Package identifier from the media buy.')]
     price: Annotated[
         offer_price.OfferPrice | None,
         Field(
@@ -49,3 +37,15 @@ class Offer(AdCPBaseModel):
             description="Buyer-generated description of the offer, for the publisher to judge relevance. E.g., '50% off Goldenfield mayo — recipe integration'. The publisher (or their AI assistant) uses this to decide whether the offer fits the context."
         ),
     ] = None
+    creative_manifest: Annotated[
+        creative_manifest_1.CreativeManifest | None,
+        Field(
+            description='Full creative details, inline. When present, the publisher has everything needed to render. Inline for small creatives (markdown, product card). For large creatives (VAST, video), the manifest references external assets via URLs.'
+        ),
+    ] = None
+    macros: Annotated[
+        dict[str, str] | None,
+        Field(
+            description='Key-value pairs the buyer passes for dynamic creative rendering or attribution tracking. In the GAM case, these flow as macro values. Not tied to user identity — attribution reconciliation happens via delivery reporting or clean room.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/tmp/provider_registration.py b/src/adcp/types/generated_poc/tmp/provider_registration.py
new file mode 100644
index 000000000..f14667b75
--- /dev/null
+++ b/src/adcp/types/generated_poc/tmp/provider_registration.py
@@ -0,0 +1,173 @@
+# generated by datamodel-codegen:
+#   filename:  tmp/provider_registration.json
+#   timestamp: 2026-04-18T19:31:26+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Any, Annotated, Literal
+from uuid import UUID
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field, RootModel
+
+from ..enums import uid_type
+
+
+class Country(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[A-Z]{2}$')]
+
+
+class Status(Enum):
+    active = 'active'
+    inactive = 'inactive'
+    draining = 'draining'
+
+
+class TmpProviderRegistration1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    provider_id: Annotated[
+        str,
+        Field(
+            description="Stable identifier for this provider registration. Used in logs, metrics, and cache keys. Publishers assign this — it is not the provider's agent_url."
+        ),
+    ]
+    endpoint: Annotated[
+        AnyUrl,
+        Field(
+            description='Base URL the router calls. The router appends /context for Context Match and /identity for Identity Match. MUST be HTTPS in production, validated against the canonical reserved IPv4 and IPv6 ranges, with the TCP connection pinned to the validated IP (DNS re-resolution alone is insufficient against rebinding). See docs/trusted-match/specification#provider-registration-security and docs/building/implementation/security#webhook-url-validation-ssrf.'
+        ),
+    ]
+    context_match: Annotated[
+        Literal[True], Field(description='Provider handles Context Match requests (POST /context).')
+    ]
+    identity_match: Annotated[
+        bool | None, Field(description='Provider handles Identity Match requests (POST /identity).')
+    ] = None
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description="ISO 3166-1 alpha-2 country codes this provider serves. The router filters Identity Match providers by the request's country field. MUST be present and non-empty when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+    uid_types: Annotated[
+        list[uid_type.UidType] | None,
+        Field(
+            description="Identity types this provider can resolve. The router selects Identity Match providers whose uid_types overlaps with any uid_type in the request's identities array. MUST be present and non-empty when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+    properties: Annotated[
+        list[UUID] | None,
+        Field(
+            description='Property RIDs (UUID v7) this provider serves. When present, the router only sends requests from these properties to this provider. When absent, the provider serves all properties.',
+            min_length=1,
+        ),
+    ] = None
+    timeout_ms: Annotated[
+        int | None,
+        Field(
+            description="Per-provider timeout in milliseconds. The router skips this provider if it does not respond within this budget. Must be less than or equal to the router's overall latency_budget_ms. The router may further reduce this based on adaptive timeout allocation.",
+            ge=5,
+            le=5000,
+        ),
+    ] = 50
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Provider ordering for merge conflict resolution. Lower values have higher priority. When two providers return offers for the same package_id (a configuration error), the router keeps the offer from the higher-priority provider. Also used for adaptive timeout allocation — higher-priority providers receive a larger share of the latency budget.',
+            ge=0,
+        ),
+    ] = 0
+    status: Annotated[
+        Status | None,
+        Field(
+            description='Provider lifecycle status. Active providers receive requests. Inactive providers are skipped entirely. Draining providers stop receiving new requests but in-flight requests complete normally.'
+        ),
+    ] = Status.active
+
+
+class TmpProviderRegistration2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    provider_id: Annotated[
+        str,
+        Field(
+            description="Stable identifier for this provider registration. Used in logs, metrics, and cache keys. Publishers assign this — it is not the provider's agent_url."
+        ),
+    ]
+    endpoint: Annotated[
+        AnyUrl,
+        Field(
+            description='Base URL the router calls. The router appends /context for Context Match and /identity for Identity Match. MUST be HTTPS in production, validated against the canonical reserved IPv4 and IPv6 ranges, with the TCP connection pinned to the validated IP (DNS re-resolution alone is insufficient against rebinding). See docs/trusted-match/specification#provider-registration-security and docs/building/implementation/security#webhook-url-validation-ssrf.'
+        ),
+    ]
+    context_match: Annotated[
+        bool | None, Field(description='Provider handles Context Match requests (POST /context).')
+    ] = None
+    identity_match: Annotated[
+        Literal[True],
+        Field(description='Provider handles Identity Match requests (POST /identity).'),
+    ]
+    countries: Annotated[
+        list[Country] | None,
+        Field(
+            description="ISO 3166-1 alpha-2 country codes this provider serves. The router filters Identity Match providers by the request's country field. MUST be present and non-empty when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+    uid_types: Annotated[
+        list[uid_type.UidType] | None,
+        Field(
+            description="Identity types this provider can resolve. The router selects Identity Match providers whose uid_types overlaps with any uid_type in the request's identities array. MUST be present and non-empty when identity_match is true.",
+            min_length=1,
+        ),
+    ] = None
+    properties: Annotated[
+        list[UUID] | None,
+        Field(
+            description='Property RIDs (UUID v7) this provider serves. When present, the router only sends requests from these properties to this provider. When absent, the provider serves all properties.',
+            min_length=1,
+        ),
+    ] = None
+    timeout_ms: Annotated[
+        int | None,
+        Field(
+            description="Per-provider timeout in milliseconds. The router skips this provider if it does not respond within this budget. Must be less than or equal to the router's overall latency_budget_ms. The router may further reduce this based on adaptive timeout allocation.",
+            ge=5,
+            le=5000,
+        ),
+    ] = 50
+    priority: Annotated[
+        int | None,
+        Field(
+            description='Provider ordering for merge conflict resolution. Lower values have higher priority. When two providers return offers for the same package_id (a configuration error), the router keeps the offer from the higher-priority provider. Also used for adaptive timeout allocation — higher-priority providers receive a larger share of the latency budget.',
+            ge=0,
+        ),
+    ] = 0
+    status: Annotated[
+        Status | None,
+        Field(
+            description='Provider lifecycle status. Active providers receive requests. Inactive providers are skipped entirely. Draining providers stop receiving new requests but in-flight requests complete normally.'
+        ),
+    ] = Status.active
+
+
+class TmpProviderRegistration(RootModel[TmpProviderRegistration1 | TmpProviderRegistration2]):
+    root: Annotated[
+        TmpProviderRegistration1 | TmpProviderRegistration2,
+        Field(
+            description="Declares a TMP provider's endpoint, capabilities, and operational parameters. Used in router configuration (static YAML or dynamic API) and referenced by product-level provider entries. The publisher controls which providers participate in their ad decisioning. Endpoint URLs MUST be validated against SSRF, and dynamic registration endpoints MUST authenticate callers — see docs/trusted-match/specification#provider-registration-security.",
+            title='TMP Provider Registration',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
diff --git a/src/adcp/utils/preview_cache.py b/src/adcp/utils/preview_cache.py
index 66e97e3bf..7628682ff 100644
--- a/src/adcp/utils/preview_cache.py
+++ b/src/adcp/utils/preview_cache.py
@@ -67,7 +67,7 @@ async def get_preview_data_for_manifest(
         Returns:
             Preview data with preview_url and metadata, or None if generation fails
         """
-        from adcp.types.aliases import PreviewCreativeSingleRequest
+        from adcp.types._generated import PreviewCreativeRequest
 
         cache_key = _make_manifest_cache_key(format_id, manifest.model_dump(exclude_none=True))
 
@@ -75,7 +75,7 @@ async def get_preview_data_for_manifest(
             return self._preview_cache[cache_key]
 
         try:
-            request = PreviewCreativeSingleRequest(
+            request = PreviewCreativeRequest(
                 request_type="single",
                 format_id=format_id,
                 creative_manifest=manifest,
diff --git a/tests/test_backward_compat.py b/tests/test_backward_compat.py
index 93959ba33..f4d6ee2c1 100644
--- a/tests/test_backward_compat.py
+++ b/tests/test_backward_compat.py
@@ -67,17 +67,10 @@ def test_property_tag_imports_from_types(self):
 
 
 class TestPreviewAliasRenames:
-    """Upstream changed format/manifest → single/batch/variant discriminator."""
-
-    def test_preview_creative_format_request(self):
-        from adcp import PreviewCreativeFormatRequest, PreviewCreativeSingleRequest
-
-        assert PreviewCreativeFormatRequest is PreviewCreativeSingleRequest
-
-    def test_preview_creative_manifest_request(self):
-        from adcp import PreviewCreativeBatchRequest, PreviewCreativeManifestRequest
-
-        assert PreviewCreativeManifestRequest is PreviewCreativeBatchRequest
+    """PreviewCreativeRequest collapsed into a single class with a request_type
+    enum; the per-mode Request aliases (Format/Manifest/Static/Interactive, Single/
+    Batch/Variant) are no longer distinct types and their aliases were removed.
+    The per-mode Response aliases remain backward-compat."""
 
     def test_preview_creative_static_response(self):
         from adcp import PreviewCreativeSingleResponse, PreviewCreativeStaticResponse
@@ -89,16 +82,6 @@ def test_preview_creative_interactive_response(self):
 
         assert PreviewCreativeInteractiveResponse is PreviewCreativeBatchResponse
 
-    def test_format_request_from_types(self):
-        from adcp.types import PreviewCreativeFormatRequest, PreviewCreativeSingleRequest
-
-        assert PreviewCreativeFormatRequest is PreviewCreativeSingleRequest
-
-    def test_manifest_request_from_types(self):
-        from adcp.types import PreviewCreativeBatchRequest, PreviewCreativeManifestRequest
-
-        assert PreviewCreativeManifestRequest is PreviewCreativeBatchRequest
-
 
 class TestStatusTypeBackwardCompat:
     """Status must resolve to delivery status, not invoice status."""
@@ -152,8 +135,6 @@ def test_all_compat_aliases_in_types_all(self):
             "VcpmFixedRatePricingOption",
             "PropertyIdActivationKey",
             "PropertyTagActivationKey",
-            "PreviewCreativeFormatRequest",
-            "PreviewCreativeManifestRequest",
             "PreviewCreativeStaticResponse",
             "PreviewCreativeInteractiveResponse",
         ]
@@ -170,8 +151,6 @@ def test_all_compat_aliases_in_adcp_all(self):
             "VcpmFixedRatePricingOption",
             "PropertyIdActivationKey",
             "PropertyTagActivationKey",
-            "PreviewCreativeFormatRequest",
-            "PreviewCreativeManifestRequest",
             "PreviewCreativeStaticResponse",
             "PreviewCreativeInteractiveResponse",
         ]
diff --git a/tests/test_capabilities.py b/tests/test_capabilities.py
index a6292a749..ccdc0b75e 100644
--- a/tests/test_capabilities.py
+++ b/tests/test_capabilities.py
@@ -20,6 +20,7 @@
     Execution,
     ExtensionsSupportedItem,
     GetAdcpCapabilitiesResponse,
+    Idempotency,
     MajorVersion,
     MediaBuy,
     Signals,
@@ -72,7 +73,10 @@ def _make_capabilities(
         extensions_supported = [ExtensionsSupportedItem(root=e) for e in extensions]
 
     return GetAdcpCapabilitiesResponse(
-        adcp=AdcpInfo(major_versions=[MajorVersion(root=3)]),
+        adcp=AdcpInfo(
+            major_versions=[MajorVersion(root=3)],
+            idempotency=Idempotency(replay_ttl_seconds=86400),
+        ),
         supported_protocols=supported,
         media_buy=media_buy,
         signals=signals,
@@ -110,31 +114,31 @@ class TestSupports:
 
     def test_media_buy_feature_true(self):
         caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True, "conversion_tracking": True}
+            media_buy_features={"inline_creative_management": True, "property_list_filtering": True}
         )
         client = _client_with_caps(caps)
 
-        assert client.supports("audience_targeting") is True
-        assert client.supports("conversion_tracking") is True
+        assert client.supports("inline_creative_management") is True
+        assert client.supports("property_list_filtering") is True
 
     def test_media_buy_feature_false(self):
-        caps = _make_capabilities(media_buy_features={"audience_targeting": False})
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": False})
         client = _client_with_caps(caps)
 
-        assert client.supports("audience_targeting") is False
+        assert client.supports("inline_creative_management") is False
 
     def test_media_buy_feature_absent(self):
         caps = _make_capabilities(media_buy_features={})
         client = _client_with_caps(caps)
 
-        assert client.supports("audience_targeting") is False
+        assert client.supports("inline_creative_management") is False
 
     def test_media_buy_features_none(self):
         """When media_buy exists but features is None."""
         caps = _make_capabilities(protocols=["media_buy"])
         client = _client_with_caps(caps)
 
-        assert client.supports("audience_targeting") is False
+        assert client.supports("inline_creative_management") is False
 
     def test_signals_feature_true(self):
         caps = _make_capabilities(
@@ -178,14 +182,12 @@ def test_extension_no_extensions_declared(self):
         assert client.supports("ext:scope3") is False
 
     def test_targeting_support(self):
-        caps = _make_capabilities(
-            targeting={"geo_countries": True, "device_type": True}
-        )
+        caps = _make_capabilities(targeting={"geo_countries": True, "language": True})
         client = _client_with_caps(caps)
 
         assert client.supports("targeting.geo_countries") is True
-        assert client.supports("targeting.device_type") is True
-        assert client.supports("targeting.language") is False
+        assert client.supports("targeting.language") is True
+        assert client.supports("targeting.geo_regions") is False
 
     def test_targeting_no_execution(self):
         caps = _make_capabilities()
@@ -195,9 +197,7 @@ def test_targeting_no_execution(self):
 
     def test_targeting_nonexistent_field(self):
         """Targeting field not in model_fields returns False."""
-        caps = _make_capabilities(
-            targeting={"geo_countries": True}
-        )
+        caps = _make_capabilities(targeting={"geo_countries": True})
         client = _client_with_caps(caps)
 
         assert client.supports("targeting.nonexistent_field") is False
@@ -205,9 +205,7 @@ def test_targeting_nonexistent_field(self):
 
     def test_model_fields_guard_on_features(self):
         """Pydantic internals are not treated as features."""
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = _client_with_caps(caps)
 
         assert client.supports("model_dump") is False
@@ -215,9 +213,7 @@ def test_model_fields_guard_on_features(self):
         assert client.supports("__class__") is False
 
     def test_unknown_feature_returns_false(self):
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = _client_with_caps(caps)
 
         assert client.supports("completely_bogus_feature") is False
@@ -227,23 +223,19 @@ def test_no_capabilities_raises(self):
         client = ADCPClient(_make_config())
 
         with pytest.raises(ADCPError, match="capabilities have not been fetched"):
-            client.supports("audience_targeting")
+            client.supports("inline_creative_management")
 
     @pytest.mark.asyncio
     async def test_fetch_then_supports(self):
         """fetch_capabilities() then supports() works."""
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = ADCPClient(_make_config())
 
-        with patch.object(
-            client, "get_adcp_capabilities", new_callable=AsyncMock
-        ) as mock_get:
+        with patch.object(client, "get_adcp_capabilities", new_callable=AsyncMock) as mock_get:
             mock_get.return_value = _make_task_result(caps)
             await client.fetch_capabilities()
 
-        assert client.supports("audience_targeting") is True
+        assert client.supports("inline_creative_management") is True
         mock_get.assert_called_once()
 
 
@@ -263,77 +255,73 @@ def test_require_no_features_is_noop(self):
 
     def test_require_all_present(self):
         caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True, "conversion_tracking": True}
+            media_buy_features={"inline_creative_management": True, "property_list_filtering": True}
         )
         client = _client_with_caps(caps)
 
         # Should not raise
-        client.require("audience_targeting", "conversion_tracking")
+        client.require("inline_creative_management", "property_list_filtering")
 
     def test_require_missing_single(self):
-        caps = _make_capabilities(
-            media_buy_features={"conversion_tracking": True}
-        )
+        caps = _make_capabilities(media_buy_features={"property_list_filtering": True})
         client = _client_with_caps(caps)
 
         with pytest.raises(ADCPFeatureUnsupportedError) as exc_info:
-            client.require("audience_targeting")
+            client.require("inline_creative_management")
 
         error = exc_info.value
-        assert "audience_targeting" in error.message
-        assert error.unsupported_features == ["audience_targeting"]
+        assert "inline_creative_management" in error.message
+        assert error.unsupported_features == ["inline_creative_management"]
 
     def test_require_missing_multiple(self):
-        caps = _make_capabilities(
-            media_buy_features={"inline_creative_management": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = _client_with_caps(caps)
 
         with pytest.raises(ADCPFeatureUnsupportedError) as exc_info:
-            client.require("audience_targeting", "conversion_tracking")
+            client.require("property_list_filtering", "catalog_management")
 
         error = exc_info.value
-        assert "audience_targeting" in error.message
-        assert "conversion_tracking" in error.message
+        assert "property_list_filtering" in error.message
+        assert "catalog_management" in error.message
         assert set(error.unsupported_features) == {
-            "audience_targeting",
-            "conversion_tracking",
+            "property_list_filtering",
+            "catalog_management",
         }
 
     def test_require_mixed_namespaces(self):
         """require() works across protocols, extensions, and features."""
         caps = _make_capabilities(
             protocols=["media_buy", "signals"],
-            media_buy_features={"audience_targeting": True},
+            media_buy_features={"inline_creative_management": True},
             extensions=["scope3"],
         )
         client = _client_with_caps(caps)
 
         # Should not raise
-        client.require("media_buy", "audience_targeting", "ext:scope3")
+        client.require("media_buy", "inline_creative_management", "ext:scope3")
 
     def test_require_error_lists_declared_features(self):
         """Error message includes what the seller does support."""
         caps = _make_capabilities(
             media_buy_features={
                 "inline_creative_management": True,
-                "conversion_tracking": True,
+                "property_list_filtering": True,
             }
         )
         client = _client_with_caps(caps)
 
         with pytest.raises(ADCPFeatureUnsupportedError) as exc_info:
-            client.require("audience_targeting")
+            client.require("catalog_management")
 
         error_str = str(exc_info.value)
-        assert "inline_creative_management" in error_str and "conversion_tracking" in error_str
+        assert "inline_creative_management" in error_str and "property_list_filtering" in error_str
 
     def test_require_includes_agent_context(self):
         caps = _make_capabilities()
         client = _client_with_caps(caps)
 
         with pytest.raises(ADCPFeatureUnsupportedError) as exc_info:
-            client.require("audience_targeting")
+            client.require("inline_creative_management")
 
         error = exc_info.value
         assert error.agent_id == "test-seller"
@@ -350,14 +338,10 @@ class TestCapabilitiesCaching:
 
     @pytest.mark.asyncio
     async def test_fetch_capabilities_caches(self):
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = ADCPClient(_make_config())
 
-        with patch.object(
-            client, "get_adcp_capabilities", new_callable=AsyncMock
-        ) as mock_get:
+        with patch.object(client, "get_adcp_capabilities", new_callable=AsyncMock) as mock_get:
             mock_get.return_value = _make_task_result(caps)
 
             await client.fetch_capabilities()
@@ -368,14 +352,10 @@ async def test_fetch_capabilities_caches(self):
 
     @pytest.mark.asyncio
     async def test_refresh_capabilities_bypasses_cache(self):
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = ADCPClient(_make_config())
 
-        with patch.object(
-            client, "get_adcp_capabilities", new_callable=AsyncMock
-        ) as mock_get:
+        with patch.object(client, "get_adcp_capabilities", new_callable=AsyncMock) as mock_get:
             mock_get.return_value = _make_task_result(caps)
 
             await client.fetch_capabilities()
@@ -385,14 +365,10 @@ async def test_refresh_capabilities_bypasses_cache(self):
 
     @pytest.mark.asyncio
     async def test_cache_expires_after_ttl(self):
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = ADCPClient(_make_config(), capabilities_ttl=0.0)
 
-        with patch.object(
-            client, "get_adcp_capabilities", new_callable=AsyncMock
-        ) as mock_get:
+        with patch.object(client, "get_adcp_capabilities", new_callable=AsyncMock) as mock_get:
             mock_get.return_value = _make_task_result(caps)
 
             await client.fetch_capabilities()
@@ -421,9 +397,7 @@ async def test_refresh_capabilities_failure_raises(self):
             success=False,
             error="Connection refused",
         )
-        with patch.object(
-            client, "get_adcp_capabilities", new_callable=AsyncMock
-        ) as mock_get:
+        with patch.object(client, "get_adcp_capabilities", new_callable=AsyncMock) as mock_get:
             mock_get.return_value = failed_result
 
             with pytest.raises(ADCPError, match="Failed to fetch capabilities"):
@@ -439,9 +413,7 @@ async def test_fetch_capabilities_success_true_data_none(self):
             data=None,
             success=True,
         )
-        with patch.object(
-            client, "get_adcp_capabilities", new_callable=AsyncMock
-        ) as mock_get:
+        with patch.object(client, "get_adcp_capabilities", new_callable=AsyncMock) as mock_get:
             mock_get.return_value = result
 
             with pytest.raises(ADCPError, match="Failed to fetch capabilities"):
@@ -464,42 +436,35 @@ def test_validate_skips_unmapped_task(self):
         client._validate_task_features("get_products")
 
     @pytest.mark.asyncio
-    async def test_sync_event_sources_requires_conversion_tracking(self):
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+    async def test_sync_event_sources_requires_property_list_filtering(self):
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = _client_with_caps(caps, validate_features=True)
 
-
         request = SyncEventSourcesRequest(
+            idempotency_key="test-idempotency-key",
             account=AccountReference(account_id="acc1"),
         )
 
-        with pytest.raises(ADCPFeatureUnsupportedError, match="conversion_tracking"):
+        with pytest.raises(ADCPFeatureUnsupportedError, match="property_list_filtering"):
             await client.sync_event_sources(request)
 
     @pytest.mark.asyncio
-    async def test_log_event_requires_conversion_tracking(self):
+    async def test_log_event_requires_property_list_filtering(self):
         """validate_features raises before request validation."""
-        caps = _make_capabilities(
-            media_buy_features={"audience_targeting": True}
-        )
+        caps = _make_capabilities(media_buy_features={"inline_creative_management": True})
         client = _client_with_caps(caps, validate_features=True)
 
         # Use _validate_task_features directly since LogEventRequest
         # requires events with min_length=1
-        with pytest.raises(ADCPFeatureUnsupportedError, match="conversion_tracking"):
+        with pytest.raises(ADCPFeatureUnsupportedError, match="property_list_filtering"):
             client._validate_task_features("log_event")
 
     @pytest.mark.asyncio
     async def test_validation_passes_when_feature_supported(self):
         """When the feature is supported, the call proceeds normally."""
-        caps = _make_capabilities(
-            media_buy_features={"conversion_tracking": True}
-        )
+        caps = _make_capabilities(media_buy_features={"property_list_filtering": True})
         client = _client_with_caps(caps, validate_features=True)
 
-
         mock_result = TaskResult(
             status=TaskStatus.COMPLETED,
             data={"event_sources": []},
@@ -508,19 +473,19 @@ async def test_validation_passes_when_feature_supported(self):
         with patch.object(client.adapter, "sync_event_sources", new_callable=AsyncMock) as mock:
             mock.return_value = mock_result
             result = await client.sync_event_sources(
-                SyncEventSourcesRequest(account=AccountReference(account_id="acc1"))
+                SyncEventSourcesRequest(
+                    idempotency_key="test-idempotency-key",
+                    account=AccountReference(account_id="acc1"),
+                )
             )
         assert result is not None
 
     @pytest.mark.asyncio
     async def test_validation_skipped_when_not_opted_in(self):
         """When validate_features is False (default), no validation."""
-        caps = _make_capabilities(
-            media_buy_features={}  # No features declared
-        )
+        caps = _make_capabilities(media_buy_features={})  # No features declared
         client = _client_with_caps(caps, validate_features=False)
 
-
         mock_result = TaskResult(
             status=TaskStatus.COMPLETED,
             data={"event_sources": []},
@@ -528,9 +493,12 @@ async def test_validation_skipped_when_not_opted_in(self):
         )
         with patch.object(client.adapter, "sync_event_sources", new_callable=AsyncMock) as mock:
             mock.return_value = mock_result
-            # Should NOT raise even though conversion_tracking is not declared
+            # Should NOT raise even though property_list_filtering is not declared
             result = await client.sync_event_sources(
-                SyncEventSourcesRequest(account=AccountReference(account_id="acc1"))
+                SyncEventSourcesRequest(
+                    idempotency_key="test-idempotency-key",
+                    account=AccountReference(account_id="acc1"),
+                )
             )
         assert result is not None
 
@@ -539,7 +507,6 @@ async def test_validation_skipped_when_no_capabilities(self):
         """When capabilities haven't been fetched, skip validation."""
         client = ADCPClient(_make_config(), validate_features=True)
 
-
         mock_result = TaskResult(
             status=TaskStatus.COMPLETED,
             data={"event_sources": []},
@@ -549,7 +516,10 @@ async def test_validation_skipped_when_no_capabilities(self):
             mock.return_value = mock_result
             # Should NOT raise even though no capabilities cached
             result = await client.sync_event_sources(
-                SyncEventSourcesRequest(account=AccountReference(account_id="acc1"))
+                SyncEventSourcesRequest(
+                    idempotency_key="test-idempotency-key",
+                    account=AccountReference(account_id="acc1"),
+                )
             )
         assert result is not None
 
@@ -564,15 +534,15 @@ class TestADCPFeatureUnsupportedError:
 
     def test_exception_fields(self):
         error = ADCPFeatureUnsupportedError(
-            unsupported_features=["audience_targeting"],
-            declared_features=["conversion_tracking", "inline_creative_management"],
+            unsupported_features=["inline_creative_management"],
+            declared_features=["property_list_filtering", "inline_creative_management"],
             agent_id="test-seller",
             agent_uri="https://seller.example.com",
         )
 
-        assert error.unsupported_features == ["audience_targeting"]
+        assert error.unsupported_features == ["inline_creative_management"]
         assert error.declared_features == [
-            "conversion_tracking",
+            "property_list_filtering",
             "inline_creative_management",
         ]
         assert error.agent_id == "test-seller"
@@ -580,17 +550,17 @@ def test_exception_fields(self):
 
     def test_exception_message_format(self):
         error = ADCPFeatureUnsupportedError(
-            unsupported_features=["audience_targeting"],
-            declared_features=["conversion_tracking"],
+            unsupported_features=["inline_creative_management"],
+            declared_features=["property_list_filtering"],
             agent_id="test-seller",
             agent_uri="https://seller.example.com",
         )
 
         msg = str(error)
-        assert "audience_targeting" in msg
+        assert "inline_creative_management" in msg
         assert "test-seller" in msg
         assert "seller.example.com" in msg
-        assert "conversion_tracking" in msg
+        assert "property_list_filtering" in msg
 
     def test_exception_inherits_from_adcp_error(self):
         error = ADCPFeatureUnsupportedError(
@@ -610,31 +580,34 @@ class TestFeatureResolver:
     def test_resolver_supports(self):
         caps = _make_capabilities(
             protocols=["media_buy", "signals"],
-            media_buy_features={"audience_targeting": True},
+            media_buy_features={"inline_creative_management": True},
             extensions=["scope3"],
             targeting={"geo_countries": True},
         )
         resolver = FeatureResolver(caps)
 
         assert resolver.supports("media_buy") is True
-        assert resolver.supports("audience_targeting") is True
+        assert resolver.supports("inline_creative_management") is True
         assert resolver.supports("ext:scope3") is True
         assert resolver.supports("targeting.geo_countries") is True
-        assert resolver.supports("conversion_tracking") is False
+        assert resolver.supports("property_list_filtering") is False
 
     def test_resolver_require_raises(self):
         caps = _make_capabilities(media_buy_features={})
         resolver = FeatureResolver(caps)
 
         with pytest.raises(ADCPFeatureUnsupportedError) as exc_info:
-            resolver.require("audience_targeting", agent_id="test")
+            resolver.require("inline_creative_management", agent_id="test")
 
         assert exc_info.value.agent_id == "test"
 
     def test_resolver_get_declared_features(self):
         caps = _make_capabilities(
             protocols=["media_buy"],
-            media_buy_features={"audience_targeting": True, "conversion_tracking": True},
+            media_buy_features={
+                "inline_creative_management": True,
+                "property_list_filtering": True,
+            },
             extensions=["scope3"],
             targeting={"geo_countries": True},
         )
@@ -642,8 +615,8 @@ def test_resolver_get_declared_features(self):
 
         declared = resolver.get_declared_features()
         assert "media_buy" in declared
-        assert "audience_targeting" in declared
-        assert "conversion_tracking" in declared
+        assert "inline_creative_management" in declared
+        assert "property_list_filtering" in declared
         assert "ext:scope3" in declared
         assert "targeting.geo_countries" in declared
 
@@ -666,13 +639,11 @@ def test_warns_on_declared_but_unimplemented(self):
         class MyHandler(ADCPHandler):
             pass  # Doesn't override anything
 
-        caps = _make_capabilities(
-            media_buy_features={"conversion_tracking": True}
-        )
+        caps = _make_capabilities(media_buy_features={"property_list_filtering": True})
 
         warnings = validate_capabilities(MyHandler(), caps)
         assert len(warnings) > 0
-        assert any("conversion_tracking" in w for w in warnings)
+        assert any("property_list_filtering" in w for w in warnings)
         assert any("log_event" in w or "sync_event_sources" in w for w in warnings)
 
     def test_no_warnings_when_handler_overrides(self):
@@ -684,9 +655,7 @@ async def log_event(self, params, context=None):
             async def sync_event_sources(self, params, context=None):
                 return {"status": "ok"}
 
-        caps = _make_capabilities(
-            media_buy_features={"conversion_tracking": True}
-        )
+        caps = _make_capabilities(media_buy_features={"property_list_filtering": True})
 
         warnings = validate_capabilities(MyHandler(), caps)
         assert len(warnings) == 0
@@ -696,9 +665,7 @@ def test_no_warnings_when_feature_not_declared(self):
         class MyHandler(ADCPHandler):
             pass
 
-        caps = _make_capabilities(
-            media_buy_features={}  # No features declared
-        )
+        caps = _make_capabilities(media_buy_features={})  # No features declared
 
         warnings = validate_capabilities(MyHandler(), caps)
         assert len(warnings) == 0
@@ -712,9 +679,7 @@ async def log_event(self, params, context=None):
 
             # sync_event_sources NOT overridden
 
-        caps = _make_capabilities(
-            media_buy_features={"conversion_tracking": True}
-        )
+        caps = _make_capabilities(media_buy_features={"property_list_filtering": True})
 
         warnings = validate_capabilities(MyHandler(), caps)
         assert len(warnings) == 1
@@ -733,9 +698,7 @@ async def sync_event_sources(self, params, context=None):
         class MyHandler(ConversionMixin):
             pass  # Inherits overrides from mixin
 
-        caps = _make_capabilities(
-            media_buy_features={"conversion_tracking": True}
-        )
+        caps = _make_capabilities(media_buy_features={"property_list_filtering": True})
 
         warnings = validate_capabilities(MyHandler(), caps)
         assert len(warnings) == 0
@@ -746,9 +709,7 @@ def test_multiple_handler_methods_warned(self):
         class MyHandler(ADCPHandler):
             pass
 
-        caps = _make_capabilities(
-            media_buy_features={"conversion_tracking": True}
-        )
+        caps = _make_capabilities(media_buy_features={"property_list_filtering": True})
 
         warnings = validate_capabilities(MyHandler(), caps)
         method_names = {w.split("'")[3] for w in warnings}
@@ -764,8 +725,8 @@ def test_all_expected_domains_present(self) -> None:
 
         domains = set(TASK_FEATURE_MAP.values())
         expected = {
-            "conversion_tracking",
-            "audience_targeting",
+            "property_list_filtering",
+            "inline_creative_management",
             "catalog_management",
             "content_standards",
             "signals",
@@ -818,7 +779,9 @@ class TestSupportsV3:
 
     def test_v3_supported(self) -> None:
         caps = GetAdcpCapabilitiesResponse(
-            adcp=AdcpInfo(major_versions=[MajorVersion(3)]),
+            adcp=AdcpInfo(
+                major_versions=[MajorVersion(3)], idempotency=Idempotency(replay_ttl_seconds=86400)
+            ),
             supported_protocols=[SupportedProtocol("media_buy")],
         )
         resolver = FeatureResolver(caps)
@@ -826,7 +789,9 @@ def test_v3_supported(self) -> None:
 
     def test_v2_only(self) -> None:
         caps = GetAdcpCapabilitiesResponse(
-            adcp=AdcpInfo(major_versions=[MajorVersion(2)]),
+            adcp=AdcpInfo(
+                major_versions=[MajorVersion(2)], idempotency=Idempotency(replay_ttl_seconds=86400)
+            ),
             supported_protocols=[SupportedProtocol("media_buy")],
         )
         resolver = FeatureResolver(caps)
@@ -834,7 +799,10 @@ def test_v2_only(self) -> None:
 
     def test_both_v2_and_v3(self) -> None:
         caps = GetAdcpCapabilitiesResponse(
-            adcp=AdcpInfo(major_versions=[MajorVersion(2), MajorVersion(3)]),
+            adcp=AdcpInfo(
+                major_versions=[MajorVersion(2), MajorVersion(3)],
+                idempotency=Idempotency(replay_ttl_seconds=86400),
+            ),
             supported_protocols=[SupportedProtocol("media_buy")],
         )
         resolver = FeatureResolver(caps)
diff --git a/tests/test_catalog_types.py b/tests/test_catalog_types.py
index bc2b1763d..1765f034f 100644
--- a/tests/test_catalog_types.py
+++ b/tests/test_catalog_types.py
@@ -158,6 +158,7 @@ def test_sync_catalogs_request_basic():
 
     req = SyncCatalogsRequest.model_validate(
         {
+            "idempotency_key": "test-idempotency-key",
             "account": {"account_id": "acct_123"},
             "catalogs": [
                 {
@@ -179,7 +180,9 @@ def test_sync_catalogs_request_discovery_only():
     """SyncCatalogsRequest accepts discovery-only mode (no catalogs)."""
     from adcp import SyncCatalogsRequest
 
-    req = SyncCatalogsRequest.model_validate({"account": {"account_id": "acct_123"}})
+    req = SyncCatalogsRequest.model_validate(
+        {"idempotency_key": "test-idempotency-key", "account": {"account_id": "acct_123"}}
+    )
     assert req.account.root.account_id == "acct_123"
     assert req.catalogs is None
 
diff --git a/tests/test_client.py b/tests/test_client.py
index 5fd8a026a..f1a283d5e 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -412,8 +412,7 @@ async def test_all_client_methods():
             {
                 "request_id": "req-002",
                 "type": "identity_match_request",
-                "user_token": "opaque-token-123",
-                "uid_type": "uid2",
+                "identities": [{"user_token": "opaque-token-123", "uid_type": "uid2"}],
                 "package_ids": ["pkg-1"],
             },
         ),
@@ -448,7 +447,7 @@ async def test_all_client_methods():
         # V3 Compliance
         (
             "comply_test_controller",
-            "ComplyTestControllerRequest1",
+            "ComplyTestControllerRequest",
             {"scenario": "list_scenarios"},
         ),
         # Note: preview_creative, create_media_buy, update_media_buy, and build_creative
@@ -483,6 +482,8 @@ async def test_method_calls_correct_tool_name(method_name, request_class, reques
     if isinstance(request_cls, types.UnionType):
         request = validate_union(request_cls, request_data)
     else:
+        if "idempotency_key" in getattr(request_cls, "model_fields", {}):
+            request_data = {"idempotency_key": "test-idempotency-key", **request_data}
         request = request_cls(**request_data)
 
     mock_result = TaskResult(
@@ -903,7 +904,7 @@ async def test_get_media_buys_parses_snapshot_response():
 
         delivering = packages[0]
         assert delivering.snapshot is not None
-        assert delivering.snapshot.delivery_status == DeliveryStatus.delivering
+        assert delivering.snapshot.delivery_status.value == DeliveryStatus.delivering.value
         assert delivering.snapshot.impressions == 4500.0
         assert delivering.snapshot.spend == 225.50
         assert delivering.snapshot.staleness_seconds == 900
@@ -911,7 +912,7 @@ async def test_get_media_buys_parses_snapshot_response():
 
         not_delivering = packages[1]
         assert not_delivering.snapshot is not None
-        assert not_delivering.snapshot.delivery_status == DeliveryStatus.not_delivering
+        assert not_delivering.snapshot.delivery_status.value == DeliveryStatus.not_delivering.value
         assert not_delivering.snapshot.impressions == 0.0
 
         no_snapshot = packages[2]
diff --git a/tests/test_extra_policy.py b/tests/test_extra_policy.py
index e82ae5359..c1972c369 100644
--- a/tests/test_extra_policy.py
+++ b/tests/test_extra_policy.py
@@ -168,7 +168,7 @@ def _load_schemas() -> dict[str, Any]:
         """Load all schemas with underscore-normalized keys for lookup."""
         all_schemas: dict[str, Any] = {}
         for schema_file in SCHEMAS_DIR.rglob("*.json"):
-            if schema_file.name in (".hashes.json", "index.json"):
+            if schema_file.name == "index.json":
                 continue
             with open(schema_file) as f:
                 schema = json.load(f)
diff --git a/tests/test_preview_html.py b/tests/test_preview_html.py
index 5455ee9d7..b77485986 100644
--- a/tests/test_preview_html.py
+++ b/tests/test_preview_html.py
@@ -35,7 +35,7 @@ def make_format_id(id_str: str) -> FormatId:
 @pytest.mark.asyncio
 async def test_preview_creative():
     """Test preview_creative method."""
-    from adcp.types._generated import PreviewCreativeRequest1
+    from adcp.types._generated import PreviewCreativeRequest
 
     config = AgentConfig(
         id="creative_agent",
@@ -91,7 +91,7 @@ async def test_preview_creative():
         client.adapter, "preview_creative", return_value=mock_raw_result
     ) as mock_call:
         with patch.object(client.adapter, "_parse_response", return_value=mock_parsed_result):
-            request = PreviewCreativeRequest1(
+            request = PreviewCreativeRequest(
                 request_type="single",
                 format_id=format_id,
                 creative_manifest=manifest,
diff --git a/tests/test_server_framework.py b/tests/test_server_framework.py
index 2f089e95e..c9398b823 100644
--- a/tests/test_server_framework.py
+++ b/tests/test_server_framework.py
@@ -148,9 +148,7 @@ async def handle_update_content_standards(self, request, context=None):
                 )
 
             async def handle_calibrate_content(self, request, context=None):
-                return validate_union(
-                    CalibrateContentResponse, {"verdict": "pass"}
-                )
+                return validate_union(CalibrateContentResponse, {"verdict": "pass"})
 
             async def handle_validate_content_delivery(self, request, context=None):
                 return validate_union(
@@ -377,7 +375,7 @@ async def test_campaign_governance_methods_validate(self):
         """Test campaign governance methods are wired through the handler."""
         handler = self.create_concrete_handler()
 
-        result = await handler.sync_plans({"plans": []})
+        result = await handler.sync_plans({"idempotency_key": "test-idempotency-key", "plans": []})
         assert isinstance(result, SyncPlansResponse)
 
         result = await handler.check_governance(
@@ -390,6 +388,7 @@ async def test_campaign_governance_methods_validate(self):
 
         result = await handler.report_plan_outcome(
             {
+                "idempotency_key": "test-idempotency-key",
                 "plan_id": "plan_123",
                 "outcome": "completed",
                 "governance_context": "ctx-abc-123-governance",
@@ -430,7 +429,9 @@ async def test_property_list_delegation(self):
         """Test property list methods validate and delegate to handlers."""
         handler = self.create_concrete_handler()
 
-        result = await handler.create_property_list({"name": "test"})
+        result = await handler.create_property_list(
+            {"idempotency_key": "test-idempotency-key", "name": "test"}
+        )
         assert isinstance(result, CreatePropertyListResponse)
 
         result = await handler.get_property_list({"list_id": "pl-1"})
@@ -439,10 +440,14 @@ async def test_property_list_delegation(self):
         result = await handler.list_property_lists({})
         assert isinstance(result, ListPropertyListsResponse)
 
-        result = await handler.update_property_list({"list_id": "pl-1"})
+        result = await handler.update_property_list(
+            {"idempotency_key": "test-idempotency-key", "list_id": "pl-1"}
+        )
         assert isinstance(result, UpdatePropertyListResponse)
 
-        result = await handler.delete_property_list({"list_id": "pl-1"})
+        result = await handler.delete_property_list(
+            {"idempotency_key": "test-idempotency-key", "list_id": "pl-1"}
+        )
         assert isinstance(result, DeletePropertyListResponse)
 
     @pytest.mark.asyncio
diff --git a/tests/test_spec_coverage.py b/tests/test_spec_coverage.py
index cb128ae34..0292c20ef 100644
--- a/tests/test_spec_coverage.py
+++ b/tests/test_spec_coverage.py
@@ -9,7 +9,6 @@
 from pathlib import Path
 from typing import Any
 
-
 def _schema_task_names() -> set[str]:
     index_path = Path(__file__).resolve().parents[1] / "schemas" / "cache" / "index.json"
     index_data = json.loads(index_path.read_text())
@@ -322,6 +321,15 @@ def test_mcp_tool_input_schema_matches_pydantic_models():
             "webhook_url",
         },
         "delete_property_list": {"context", "ext", "idempotency_key"},
+        # Collection Lists + sync_governance: envelope fields
+        "create_collection_list": {"context", "ext", "idempotency_key"},
+        "get_collection_list": {"context", "ext"},
+        "list_collection_lists": {"context", "ext"},
+        "update_collection_list": {"context", "ext", "idempotency_key"},
+        "delete_collection_list": {"context", "ext", "idempotency_key"},
+        "sync_governance": {
+            "adcp_major_version", "context", "ext", "idempotency_key",
+        },
         # TMP: envelope fields optional for agents
         "context_match": {
             "$schema", "artifact", "property_id", "protocol_version",
diff --git a/tests/test_type_aliases.py b/tests/test_type_aliases.py
index d9c1c76f4..8bc6a2c79 100644
--- a/tests/test_type_aliases.py
+++ b/tests/test_type_aliases.py
@@ -140,11 +140,12 @@ def test_all_response_aliases_exported():
 
 
 def test_all_request_aliases_exported():
-    """Test that all expected request type aliases are exported."""
+    """Test that all expected request type aliases are exported.
+
+    PreviewCreativeRequest collapsed to a single class with a request_type
+    enum in ADCP 3.0 — the per-mode Request aliases were removed.
+    """
     expected_aliases = [
-        "PreviewCreativeSingleRequest",
-        "PreviewCreativeBatchRequest",
-        "PreviewCreativeVariantRequest",
         "UpdateMediaBuyPackagesRequest",
         "UpdateMediaBuyPropertiesRequest",
     ]
diff --git a/tests/test_type_coercion.py b/tests/test_type_coercion.py
index a682e9a61..8a53c51fb 100644
--- a/tests/test_type_coercion.py
+++ b/tests/test_type_coercion.py
@@ -90,8 +90,8 @@ def test_ext_accepts_dict(self):
 
     def test_get_products_request_context_accepts_dict(self):
         """GetProductsRequest.context accepts dict."""
-        req = validate_union(GetProductsRequest,
-            {"buying_mode": "wholesale", "context": {"key": "value"}}
+        req = validate_union(
+            GetProductsRequest, {"buying_mode": "wholesale", "context": {"key": "value"}}
         )
         assert isinstance(req.context, ContextObject)
         assert req.context.key == "value"
@@ -289,6 +289,7 @@ class ExtendedPackage(PackageRequest):
 
         # No cast() needed!
         request = CreateMediaBuyRequest(
+            idempotency_key="test-idempotency-key",
             account={"account_id": "acct-1"},
             brand={"domain": "example.com"},
             buyer_ref="buyer-ref",